Patent Description:
A clothing treatment apparatus refers to all apparatuses for managing or treating clothing, such as washing or drying cloth, or removing wrinkles of clothing at home or in a laundry. For example, the clothing treatment apparatus includes a washing machine for washing clothing, a dryer for drying clothing, a washing machine/dryer having both washing and drying functions, a refresher for refreshing clothing, a steamer to remove unnecessary wrinkles of clothing, or the like.

More specifically, the refresher is a apparatus for making clothing more pleasant and fresh, and performs functions such as drying clothing, supplying fragrance to clothing, preventing occurrence of static electricity in clothing, and removing wrinkles of clothing. In general, the steamer is an apparatus which removes wrinkles of clothing by supplying steam to clothing, and unlike a typical iron, in the steamer, clothing does not come into contact with a heating plate, and thus, it is possible to delicately removes wrinkles of the clothing. A clothing treatment apparatus is known, which has functions of the refresher and the steamer together and performs functions such as removing wrinkles and odors of clothing stored therein by using steam and hot air.

In addition, a clothing treatment apparatus is known, which exerts a function of unfolding wrinkles of clothes by vibrating (reciprocating) a clothing hanger rod in a predetermined direction.

<CIT> discloses a laundry treating apparatus including a hanger bar arranged in a treating chamber, a driving part provided on an outside of the treating chamber to generate a rotational force, a power transmitting part transmitting the rotational force of the driving part, and a power converting part converting the rotational force transmitted by the power transmitting part to reciprocate the hanger bar. When the motor rotates, the power converting portion also rotates with an identically rotational direction of the motor.

<CIT> relates to a clothes drying cabinet provided with a shaker assembly including a motor, a single eccentric drive weight and a hanger bar. The single eccentric drive weight coupled to the motor is connected to the hanger bar and causes the hanger bar to be vibrated. Therefore, the shaking direction of the hanger bar is random.

In the related art, when a hanger rod is vibrated, there is a problem that unnecessary vibrations occur even in a direction other than a vibrating direction. A first object of the present disclosure is to solve this problem and minimize unnecessary vibrations.

A second object of the present disclosure is to effectively increase an excitation force in the vibrating direction applied to the hanger rod while minimizing the unnecessary vibrations.

In the prior art, an amplitude is maintained even when a frequency of the hanger rod is changed, which causes a damage in a product. A third object of the present disclosure is to solve this problem and reduce the damage of the product even if the frequency is changed.

A fourth object of the present disclosure to cause the hanger rod to perform a vibration motion capable of adjusting various frequencies and amplitudes, when the hanger rod vibrates.

In order to achieve the above-described objects, according to the invention, there is provided a clothing treatment apparatus including: a frame; a hanger body which is disposed to be movable to the frame and is provided to hang clothing or a hanger; a vibrating body which is rotatably provided about a predetermined central axis having a fixed relative position to the frame; a first eccentric portion which is supported by the vibrating body and configured to rotate with eccentric weight about a predetermined first rotation axis spaced apart from the central axis; a second eccentric portion which is supported by the vibrating body and configured to rotate with eccentric weight about a predetermined second rotation axis which is spaced apart from the central axis and is the same as or parallel to the first rotation axis; and a hanger driving unit which is disposed in the vibrating body and is connected to the hanger body at a position spaced apart from the central axis. A centrifugal force of the first eccentric portion with respect to the first rotation axis and a centrifugal force of the second eccentric portion with respect to the second rotation axis are provided to be reinforced with each other when the vibrating body generates a rotational force about the central axis, and are provided in directions opposite to each other when the vibrating body does not generate the rotational force. The eccentric weight of the first eccentric portion and the eccentric weight of the second eccentric portion are arranged to cancel a force to the vibrating body by both centrifugal forces in directions perpendicular to the predetermined vibration directions.

In order to achieve the above-described objects, according to another aspect of the present disclosure, there is provided a clothing treatment apparatus including: a frame; a hanger module including a hanger body which is disposed to be movable to the frame and is provided to hang clothing or a hanger; and a vibration module which generates vibrations. The vibration module includes a vibrating body which is rotatably provided about a predetermined central axis having a fixed relative position to the frame, a first eccentric portion which is supported by the vibrating body and rotates with eccentric weight about a predetermined first rotation axis spaced apart from the central axis, a second eccentric portion which is supported by the vibrating body and rotates with eccentric weight about a predetermined second rotation axis which is spaced apart from the central axis and is the same as or parallel to the first rotation axis, and a hanger driving unit which is fixed to the vibrating body and is connected to the hanger body at a position spaced apart from the central axis. When weight of the first eccentric portion is eccentric to the first rotation axis in one direction (D1) of a clockwise direction (D11) and a counterclockwise direction (D12) based on the central axis, weight of the second eccentric portion is provided to be eccentric to the second rotation axis in the one direction (D1). When the weight of the first eccentric portion is eccentric to the first rotation axis in one direction (D2) of a centrifugal direction (Dr1) and a mesial direction (Dr2) based on the central axis, the weight of the second eccentric portion is provided to be eccentric to the second rotation axis in a direction opposite to the one direction (D2).

In order to achieve the above-described objects, according to still another aspect of the present disclosure, there is provided a clothing treatment apparatus including: a frame; a hanger module including a hanger body which is disposed to be movable to the frame and is provided to hang clothing or a hanger; and a vibration module which generates vibrations. The vibration module includes a vibrating body which is rotatably provided about a predetermined central axis having a fixed relative position to the frame, a first eccentric portion which is supported by the vibrating body and rotates with eccentric weight about a predetermined first rotation axis spaced apart from the central axis, a second eccentric portion which is supported by the vibrating body and rotates with eccentric weight about a predetermined second rotation axis which is spaced apart from the central axis and is the same as or parallel to the first rotation axis, and a hanger driving unit which is disposed in the vibrating body and is connected to the hanger body at a position spaced apart from the central axis. When weight of the first eccentric portion generates a centrifugal force with respect to the first rotation axis in one direction (D1) of a clockwise direction (D11) and a counterclockwise direction (D12) based on the central axis, the second eccentric portion is provided to generate a centrifugal force with respect to the second rotation axis in the one direction (D1). When the first eccentric portion generates a centrifugal force with respect to the first rotation axis in one direction (D2) of a centrifugal direction (Dr1) and a mesial direction (Dr2) based on the central axis, the second eccentric portion is provided to generate a centrifugal force with respect to the second rotation axis in a direction opposite to the one direction (D2).

In order to achieve the above-described objects, according to still another aspect of the present disclosure, there is provided a vibration module for a clothing treatment apparatus including: a vibrating body in which a predetermined central axis is preset; a first eccentric portion which is supported by the vibrating body and is preset to rotate with eccentric weight about a predetermined first rotation axis spaced apart from the central axis; a second eccentric portion which is supported by the vibrating body and is preset to rotate with eccentric weight about a predetermined second rotation axis which is spaced apart from the central axis and is the same as or parallel to the first rotation axis; and a hanger driving unit which is disposed in the vibrating body and is preset to be connected to an external hanger body at a position spaced apart from the central axis. A centrifugal force of the first eccentric portion with respect to the first rotation axis and a centrifugal force of the second eccentric portion with respect to the second rotation axis are provided to be reinforced with each other when the vibrating body generates a rotational force about the central axis, and are provided in directions opposite to each other when the vibrating body does not generate the rotational force.

The centrifugal force of the first eccentric portion with respect to the first rotation axis and the centrifugal force of the second eccentric portion with respect to the second rotation axis may be provided to cancel each other when the rotational force is not generated.

A distance between the first rotation axis and the central axis, and a distance between the second rotation axis and the central axis may be provided to be same as each other.

The first rotation axis and the second rotation axis may be spaced apart from the central axis in the same direction as each other or in directions opposite to each other.

The first rotation axis and the second rotation axis may be spaced apart from the central axis in the directions opposite to each other.

i An angular speed of the first eccentric portion about the first rotation axis and ii an angular speed of the second eccentric portion about the second rotation axis may be preset to be same as each other.

The clothing treatment apparatus may further include: a motor having a motor shaft which is provided in the vibrating body and disposed on the central axis; and a transmission unit which is disposed in the vibrating body and transmits a rotational force of the motor to each of the first eccentric portion and the second eccentric portion.

According to still another aspect of the present disclosure, there is provided a clothing treatment apparatus including: a frame which forms an exterior and forms a treatment space in which clothing is accommodated; a hanger module which is movable to the frame in an upper portion of the treatment space and is provided to hang the clothing or a hanger; a vibration module which is supported by the frame and generates vibrations in the hanger module, in which the vibration module includes a motor which rotates a central axis formed in an up-down direction, a first eccentric portion which is connected to the motor to be rotated and rotates with eccentric weight about a first rotation axis spaced apart to be parallel to the central axis, a second eccentric portion which is connected to the motor to be rotated and rotates with eccentric weight about a second rotation axis spaced apart to be parallel in a direction opposite to the first rotation axis from the central axis, a vibrating body which supports the motor, rotatably supports the first eccentric portion and the second eccentric portion, and is rotated by a centrifugal force of the first eccentric portion with respect to the first rotation axis and a centrifugal force of the second eccentric portion with respect to the second rotation axis in a clockwise direction and a counterclockwise direction within a predetermined angle range based on the central axis, and a hanger driving unit which transmits a rotational force of the vibrating body rotating within the predetermined angle range to the hanger module.

According to the above-described aspects, a centrifugal force F1 of the first eccentric portion and a second centrifugal force F2 of the second eccentric portion inducing a rotation of the vibrating body around the central axis are reinforced with each other to apply an exciting force Fo to the hanger body, and the centrifugal force F1 and the centrifugal force F2 which does not induce the rotation of the vibrating body cancel each other. Accordingly, it is possible to suppress occurrence of vibrations caused by a centrifugal force irrelevant to generation of the exciting force Fo. (refer to <FIG>).

The centrifugal force F1 and the centrifugal force F2 are provided to "completely cancel" each other, and thus, it is possible to further reduce occurrence of unnecessary vibrations in directions +Y and -Y perpendicular to predetermined vibration directions +X and -X.

A distance between the first rotation axis and the central axis, and a distance between the second rotation axis and the central axis are be provided to be same as each other. Accordingly, ratios of the centrifugal force F1 and the centrifugal force F2 contributing the generation of the exciting force Fo are the same as each other, and thus, it is possible to prevent a fatigue load from being concentrated on any one of a portion supporting the first eccentric portion and a portion supporting the second eccentric portion.

The first rotation axis and the second rotation axis are spaced apart from the central axis in the same direction as each other or in the directions opposite to each other. Accordingly, reinforcement and cancellation of the centrifugal force F1 and the centrifugal force F2 can be repeated regularly.

The first rotation axis and the second rotation axis are spaced apart from the central axis in the directions opposite to each other. Accordingly, it is possible to prevent the vibrating body from being eccentric to one side based on the central axis due to the weight of the first eccentric portion and the second eccentric portion.

The motor shaft disposed on the central axis is provided. Accordingly, it is possible to prevent eccentricity toward one side due to the weight of the motor about the central axis.

An angular speed of the first eccentric portion about the first rotation axis and an angular speed of the second eccentric portion about the second rotation axis are preset to be same as each other. Accordingly, it is possible to periodically reinforce and cancel the centrifugal force F1 and centrifugal force F2 according to the rotations of the first eccentric portion and the second eccentric portion.

In order to explain the present disclosure, the following description will be made based on a spatial orthogonal coordinate system by an X-axis, a Y-axis and a Z-axis orthogonal to each other. Each axial direction (X-axis direction, Y-axis direction, Z-axis direction) means both directions in which each axis extends. A "+" sign (+X-axis direction, +Y-axis direction, +Z-axis direction) in front of each axial direction means a positive direction, which is one of both directions in which each axis extends. A "-" sign (-X-axis direction, -Y-axis direction, -Z-axis direction) in front of each axial direction means a negative direction, which is the other of both directions in which each axis extends.

The expressions referring to directions such as "before (+Y) / after (-Y) / left (+X) / right (-X) / up (+Z) / down (-Z)" mentioned below are defined according to an XYZ coordinate axis. However, the expressions are only to explain the present disclosure to be clearly understood, and it is needless to say that each direction may be defined differently depending on where a reference is placed.

The use of terms such as "first, second, and third" in front of the components mentioned below is only to avoid confusion of referred components, and is irrelevant to an order, an importance, or a master/slave relationship between the components. For example, an invention including only a second component without a first component can be implemented.

As used herein, a singular expression includes a plural expression unless a context clearly indicates otherwise.

Referring to <FIG>, <FIG>, and <FIG>, a clothing treatment apparatus <NUM> according to an embodiment of the present disclosure includes a frame <NUM> which is placed on an external floor or fixed to an external wall. The frame <NUM> forms a treatment space <NUM> for receiving clothing. The clothing treatment apparatus <NUM> includes a supply unit <NUM> which supplies at least one of air, steam, fragrance, and an antistatic agent to the clothing. The clothing treatment apparatus <NUM> includes a hanger module <NUM> which is provided to hang the clothing or a hanger. The hanger module <NUM> is supported by the frame <NUM>. The clothing treatment apparatus <NUM> includes vibration modules <NUM>, <NUM>, <NUM>, and <NUM> which generate vibrations. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> vibrate the hanger module <NUM>. The clothing treatment apparatus <NUM> includes elastic members <NUM> and <NUM> which are provided to be elastically deformed or elastically restored when the hanger module <NUM> is operated. The elastic members <NUM> and <NUM> are provided to be elastically deformed or elastically restored when the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> are operated. The clothing treatment apparatus <NUM> includes support members <NUM> and <NUM> supporting one end of each of the elastic members <NUM> and <NUM>. The support members <NUM> and <NUM> may support the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> so that the vibration modules are operated. The support members <NUM> and <NUM> may be fixed to the frame <NUM>. The clothing treatment apparatus <NUM> may include a controller (not illustrated) which controls an operation of the supply unit <NUM>. The controller may control whether the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> are operated and operation patterns thereof. The clothing treatment apparatus <NUM> may further include a clothing recognition sensor (not illustrated) which detects clothing accommodated inside the treatment space <NUM>.

The frame <NUM> forms an exterior. The frame <NUM> forms the treatment space <NUM> in which clothing is accommodated. The frame <NUM> includes a top frame <NUM> forming an upper surface, side frames <NUM> forming right and left side surfaces, and a rear frame (not illustrated) forming a rear surface. The frame <NUM> includes a base frame (not illustrated) forming a bottom surface.

The frame <NUM> may include an inner frame 11a forming an inner surface and an outer frame 11b forming an outer surface. The inner surface of the inner frame 11a forms the treatment space <NUM>. A disposition space <NUM> is formed between the inner frame 11a and the outer frame 11b. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may be disposed in the disposition space <NUM>. The elastic members <NUM> and <NUM> and the support members <NUM> and <NUM> may be disposed in the disposition space <NUM>.

In the treatment space <NUM>, physical or chemical properties of the clothing by applying air (for example, hot air), steam, fragrance, and/or an antistatic agent to the clothing are changed. For example, the clothing is treated in various ways in the treatment space <NUM>. That is, the clothing is dried by applying hot air to the clothing, the wrinkles formed on the clothing are spread using steam, the fragrance is sprayed to the clothing so as treat fragrance, or the antistatic agent is sprayed to the clothing to prevent occurrence of static electricity in the clothing.

At least a portion of the hanger module <NUM> is disposed in the treatment space <NUM>. A hanger body <NUM> is disposed in the treatment space <NUM>. The treatment space <NUM> has one surface open to allow clothing to enter and exit, and the opened surface is opened and closed by a door <NUM>. When the door <NUM> is closed, the treatment space <NUM> is isolated from an outside, and when the door <NUM> is opened, the treatment space <NUM> is exposed to the outside.

The supply unit <NUM> may supply air into the treatment space <NUM>. The supply unit <NUM> may cause air in the treatment space <NUM> to circulate and supply air into the treatment space <NUM>. Specifically, the supply unit <NUM> may suck air in the treatment space <NUM> and discharge the air into the treatment space <NUM>. The supply unit <NUM> may supply external air into the treatment space <NUM>.

The supply unit <NUM> may supply air which is subjected to a predetermined treatment process into the treatment space <NUM>. For example, the supply unit <NUM> may supply heated air into the treatment space <NUM>. The supply unit <NUM> may supply cooled air into the treatment space <NUM>. In addition, the supply unit <NUM> may supply air that has not been separately processed into the treatment space <NUM>. Moreover, the supply unit <NUM> may add steam, fragrance or an antistatic agent to air and then, supply the air into the treatment space <NUM>.

The supply unit <NUM> may include an air intake port 20a through which air inside the treatment space <NUM> is sucked. The supply unit <NUM> may include an air discharge port 20b through which air is discharged into the treatment space <NUM>. The air sucked through the air intake port 20a may be subjected to a predetermined treatment and discharged through the air discharge port 20b. The supply unit <NUM> may include a steam injection port 20c through which steam is sprayed into the treatment space <NUM>. The supply unit <NUM> may include a heater (not illustrated) which heats the sucked air. The supply unit <NUM> may include a filter (not illustrated) which filters the sucked air. The supply unit <NUM> may include a fan (not illustrated) which pressurizes air.

The air and/or steam supplied by the supply unit <NUM> is applied to the clothing accommodated in the treatment space <NUM> to affect the physical or chemical properties of the clothing. For example, a tissue structure of clothing is relaxed and wrinkles are spread by hot air or steam, and unpleasant odor can be removed by reacting odor molecules bare in the clothing with steam. In addition, hot air and/or steam generated by the supply unit <NUM> can sterilize bacteria parasitized in the clothing.

Referring to <FIG>, <FIG>, <FIG> and <FIG>, the hanger module <NUM> may be disposed in an upper portion of the treatment space <NUM>. The hanger module <NUM> is provided to hang the clothing or the hanger. The hanger module <NUM> is supported by the frame <NUM>. The hanger module <NUM> is provided to be movable. The hanger module <NUM> is connected to the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>, and receives vibrations of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>.

The hanger module <NUM> includes a hanger body <NUM> which is provided to hang the clothing or the hanger. In the present embodiment, the hanger body <NUM> forms a locking groove 31a so that a hanger is hung. However, in other embodiments, the hanger body <NUM> may be provided with a hook (not illustrated) or the like to directly hang clothes.

The hanger body <NUM> is supported by the frame <NUM>. The hanger body <NUM> may be connected to the frame <NUM> through a hanger movable portion <NUM> and a hanger support portion <NUM>. The hanger body <NUM> is disposed movably relative to the frame <NUM>. The hanger body <NUM> is provided to vibrate in predetermined vibration directions +X and -X. The hanger body <NUM> may vibrate in the vibration directions +X and -X with respect to the frame <NUM>. The hanger body <NUM> reciprocates in the vibration directions +X and -X by the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>. The hanger module <NUM> reciprocates while hanging on the upper portion of the treatment space <NUM>.

The hanger body <NUM> may be formed to extend long in the vibration directions +X and -X. The plurality of locking grooves 31a may be disposed on an upper side of the hanger body <NUM> to be spaced apart from each other in the vibration directions +X and -X. The locking grooves 31a may be formed to extend in directions +Y and -Y across to the vibration directions +X and -X.

The vibration modules <NUM>, <NUM>, <NUM> and <NUM> include the hanger driving units <NUM> and <NUM> connected to the hanger module <NUM>. The hanger body <NUM> includes the hanger driven unit 31b connected to the hanger driving units <NUM> and <NUM>. One of the hanger driving units <NUM> and <NUM> and the hanger driven unit 31b forms a slit extending in the directions +Y and -Y across the vibration directions +X and -X and the other protrudes parallel to a central axis Oc, which will be described later, to form a protrusion inserted into the slit.

In the present embodiment, the hanger driven unit 31b forms a slit 31bh extending in the directions +Y and -Y, and the hanger driving units <NUM> and <NUM> include protrusions 58a and 358a which protrude downward and are inserted into the slit 31bh. Although not illustrated, in other embodiments, the hanger driven unit may form a slit extending in the directions +Y and -Y, and the hanger driven unit may include a protrusion which protrudes upward and is inserted into the slit of the hanger driving unit.

The protrusions 58a and 358a protrude to be parallel to the central axis Oc. The protrusions 58a and 358a extend along a predetermined connection axis Oh which will be described later. The protrusions 58a and 358a are disposed on the connection axis Oh.

The slit 31bh is formed long in the directions +Y and -Y orthogonal to the vibration directions +X and -X of the hanger module <NUM>. When the protrusions 58a and 358a rotate around the central axis Oc in a state of being inserted into the slits 31bh, while the protrusions 58a and 358a move relative to the slit 31bh in the orthogonal directions +Y and -Y, the hanger body <NUM> reciprocates in the vibration directions +X and -X. In partial cross-sectional views of <FIG> and <FIG>, the directions of an arc movement (rotational movement) within a predetermined range in the state where the protrusions 58a and 358a are inserted into the slits 31bh are illustrated by arrows. Accordingly, a movement range of the hanger driven unit 31b vibrating in right and left directions +X and -X is illustrated by dotted lines.

The hanger module <NUM> includes the hanger movable portion <NUM> which movably supports the hanger body <NUM>. The hanger movable portion <NUM> is formed to be movable in the vibration directions +X and -X. The hanger movable portion <NUM> may be formed of a flexible material so that the hanger body <NUM> can move. The hanger movable portion <NUM> may include an elastic member which is elastically deformable when the hanger body <NUM> moves. An upper end of the hanger movable portion <NUM> is fixed to the frame <NUM> and a lower end thereof is fixed to the hanger body <NUM>. The hanger movable portion <NUM> may extend vertically. The upper end of the hanger movable portion <NUM> is seated on the hanger support portion <NUM>. The hanger movable portion <NUM> connects the hanger support portion <NUM> and the hanger body <NUM> to each other. The hanger movable portion <NUM> is disposed to penetrate the hanger guide portion <NUM> vertically. A length of a horizontal cross section of the hanger movable portion <NUM> in the vibration directions +X and -X is shorter than a length thereof in the directions +Y and -Y perpendicular to the vibration directions +X and -X.

The hanger module <NUM> includes the hanger support portion <NUM> fixed to the frame <NUM>. The hanger support portion <NUM> fixes the hanger movable portion <NUM> to the frame <NUM>. The hanger support portion <NUM> may be fixed to the inner frame 11a. An upper end of the hanger movable portion <NUM> may engage with and may be suspended by the hanger support portion <NUM>. The hanger support portion <NUM> is formed in a horizontal plate shape, and the hanger movable portion <NUM> may be disposed to penetrate the hanger support portion <NUM>.

The hanger module <NUM> may further include a hanger guide part <NUM> which guides a position of the hanger movable portion <NUM>. The hanger guide portion <NUM> is fixed to the frame <NUM>. A portion between the upper surface of the hanger guide portion <NUM> and the hanger movable portion <NUM> may be sealed. A lower portion of the hanger guide portion <NUM> is recessed upward to form a groove, and the hanger movable portion <NUM> can move in the vibration directions +X and -X in the groove of the hanger guide portion <NUM> recessed upward.

Referring to <FIG>, <FIG>, and <FIG>, the elastic members <NUM> and <NUM> are provided to be elastically deformed or elastically restored when the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> rotates about the central axis Oc. The elastic members <NUM> and <NUM> are provided to be elastically deformed or elastically restored when the vibrating bodies <NUM> and <NUM> rotate about the central axis Oc. The elastic members <NUM> and <NUM> may limit the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> so that the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> vibrate within a predetermined angular range. Elastic forces of the elastic members <NUM>, <NUM> and centrifugal forces of the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM> are synthesized, and vibration patterns (amplitude and frequency) of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> can be determined.

One end of the elastic members <NUM> and <NUM> is fixed to the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> and the other end thereof is fixed to the support members <NUM> and <NUM>. The elastic members <NUM> and <NUM> may include a spring or a windup spring. The support members <NUM> and <NUM> may include a tension spring, a compression springs, or a torsion spring.

Referring to <FIG> and <FIG>, the support members <NUM> and <NUM> are fixed to the frame <NUM>. The support members <NUM> and <NUM> may be fixed to the inner frame 11a. The support members <NUM> and <NUM> may support the elastic members <NUM> and <NUM>. The support members <NUM> and <NUM> support the vibration modules <NUM>, <NUM>, <NUM> and <NUM>. The support members <NUM>, <NUM> are supported by the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>. The support members <NUM> and <NUM> rotatably support the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>. The support members <NUM>, <NUM> support the vibration module <NUM>, <NUM>, <NUM>, and <NUM> so that the vibration modules50, <NUM>, <NUM>, and <NUM> can rotate about the central axis Oc.

Referring to <FIG>, and <FIG>, the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> will be briefly described as follows. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> move (vibrate) the hanger body <NUM>. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> are connected to the hanger body <NUM>, and transmits the vibrations of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> to the hanger body <NUM>.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> can be supported by the inner frame 11a. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> can be fixed to the frame <NUM> by the support members <NUM> and <NUM>. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may be disposed between the inner frame 11a and the outer frame 11b. The upper inner frame 11a is recessed downward to form the disposition space <NUM>, and the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> can be disposed in the disposition space <NUM>.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may be located in an upper side of the treatment space <NUM>. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may be disposed above the hanger body <NUM>.

The vibration modules <NUM>, <NUM>, <NUM> and <NUM> include the vibrating bodies <NUM> and <NUM> supported by the frame <NUM>. The vibrating bodies <NUM> and <NUM> may be connected to the frame <NUM> by the support members <NUM> and <NUM>. The vibrating bodies <NUM> and <NUM> form outer shapes of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>.

The vibration bodies <NUM> and <NUM> have the predetermined central axis Oc. The vibrating bodies <NUM> and <NUM> are rotatably provided about the predetermined central axis Oc having a fixed position relative to the frame <NUM>. The support members <NUM> and <NUM> rotatably support the vibrating bodies <NUM> and <NUM>. The vibrating bodies <NUM> and <NUM> may be rotatably provided only within a predetermined angular range. For example, the frame <NUM> or the support members <NUM> and <NUM> may include a limit portion which can come into contact with the vibrating bodies <NUM> and <NUM> to limit the rotation ranges of the vibrating bodies <NUM> and <NUM>. For example, elastic forces of the elastic members <NUM> and <NUM> may increase as the vibrating bodies <NUM> and <NUM> rotate, and thus, the elastic members <NUM> and <NUM> can limit the rotation ranges of the vibrating bodies <NUM> and <NUM>.

The vibrating bodies <NUM> and <NUM> support the motors <NUM> and <NUM>. The vibrating bodies <NUM> and <NUM> and the hanger driving units <NUM> and <NUM> are fixed to each other. The vibrating bodies <NUM> and <NUM> support weight shafts 54a, 54b and <NUM>. The vibrating bodies <NUM> and <NUM> support the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM>. The vibrating bodies <NUM> and <NUM> may accommodate the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM> therein.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> include first eccentric portions <NUM> and <NUM> which rotate with eccentric weight about a predetermined first rotation axis Ow1 spaced apart from the central axis Oc. The first eccentric portions <NUM>, <NUM>, and <NUM> are preset to rotate with eccentric weight about the first rotation axis Ow1. The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> include second eccentric portions <NUM> and <NUM> which rotate with eccentric weight about a predetermined second rotation axis Ow2 spaced apart from the central axis Oc. The second eccentric portions <NUM>, <NUM>, and <NUM> are preset to rotate with eccentric weight about the second rotation axis Ow2. Here, the first eccentric portion <NUM> collectively refers to the first eccentric portions <NUM> and <NUM> according to the first and second embodiments, and the second eccentric portion <NUM> collectively refers to the second eccentric portions <NUM> and <NUM> according to the first and second embodiments.

The first rotation axis Ow1 and the second rotation axis Ow2 may be the same as each other or different from each other. The second rotation axis Ow2 may be the same as or parallel to the first rotation axis Ow1. In the first and second embodiments, the first rotation axis Ow1 and the second rotation axis Ow2 are parallel to each other. In the third embodiment, the first rotation axis Ow1 and the second rotation axis are the same as each other.

The first eccentric portions <NUM> and <NUM> are supported by the vibrating bodies <NUM> and <NUM>. The first eccentric portions <NUM> and <NUM> may be rotatably supported by the weight shafts 54a and <NUM> disposed in the vibrating bodies <NUM> and <NUM>. The second eccentric portions <NUM> and <NUM> are supported by vibrating bodies <NUM> and <NUM>. The second eccentric portions <NUM> and <NUM> may be rotatably supported by weight shafts 54b and <NUM> disposed in the vibrating bodies <NUM> and <NUM>.

The first eccentric portions <NUM> and <NUM> include first rotating portions 155b, 255b, and 355b which come into contact with the transmission units <NUM>, <NUM>, and <NUM> and rotate about the first rotation axis Ow1. The first rotating portions 155b, 255b, and 355b receive rotational forces of the transmission units <NUM>, <NUM>, and <NUM>. Each of the first rotating portions 155b, 255b, and 355b may be formed in a cylindrical shape about the first rotation axis Ow1 as a whole.

The first eccentric portions <NUM> and <NUM> include first weight members 55a and 355a fixed to the first rotating portions 155b, 255b, and 355b. The first weight members 55a and 355a rotate integrally with the first rotating portion 155b, 255b, and 355b. The first weight members 55a and 355a are formed of a material having specific gravity larger than the first rotating portions 155b, 255b, and 355b.

The first weight members 55a and 355a are disposed on one side about the first rotation axis Ow1 to induce eccentric weight of the first eccentric portions <NUM> and <NUM>. Each of the first weight members 55a and 355a may be formed in a column shape having a semi-circular bottom surface as a whole. The first weight members 55a and 355a may be disposed in an angle range within <NUM>° about the first rotation axis Ow1 at an arbitrary time point during the rotations of the first eccentric portions <NUM> and <NUM>. In the present embodiment, the first weight members 55a and 355a are disposed in a range of <NUM>° about the first rotation axis Ow1, at an arbitrary time point described above.

The second eccentric portions <NUM> and <NUM> include second rotating portions 155b, 255b, and 355b which come into contact with the transmission units <NUM>, <NUM>, and <NUM> and rotate about the second rotation axis Ow2. The second rotating portions 156b, 256b, and 356b receive the rotational forces of the transmission units <NUM>, <NUM>, and <NUM>. Each of the second rotating portions 156b, 256b, and 356b may be formed in a cylindrical shape about the second rotation axis Ow2 as a whole.

The second eccentric portions <NUM> and <NUM> include second weight members 56a and 356a fixed to the second rotating portions 156b, 256b, and 356b. The second weight members 56a and 356a rotate integrally with the second rotating portion 156b, 256b, and 356b. The second weight members 56a and 356a are formed of a material having specific gravity larger than the second rotating portions 156b, 256b, and 356b.

The second weight members 56a and 356a are disposed on one side about the second rotation axis Ow2 to induce eccentric weight of the second eccentric portions <NUM> and <NUM>. Each of the second weight members 56a and 356a may be formed in a column shape having a semi-circular bottom surface as a whole. The second weight members 56a and 356a may be disposed in an angle range within <NUM>° about the second rotation axis Ow2 at an arbitrary time point during the rotations of the second eccentric portions <NUM> and <NUM>. In the present embodiment, the second weight members 56a and 356a are disposed in a range of <NUM>° about the second rotation axis Ow2, at an arbitrary time point described above.

The first rotating portions 155b, 255b, and 355b and the second rotating portions 156b, 256b, and 356b may be formed to have the same weight. The first weight members 55a and 355a and the second weight members 56a and 356a may be formed to have the same weight.

The vibration modules <NUM>, <NUM>, <NUM> and <NUM> include the hanger driving units <NUM> and <NUM> connecting the vibrating bodies <NUM> and <NUM> and the hanger body <NUM> to each other. The hanger driving units <NUM> and <NUM> are disposed in the vibrating bodies <NUM> and <NUM>. The hanger driving units <NUM> and <NUM> are connected to the hanger body <NUM> at a position spaced apart from the central axis Oc. The hanger driving units <NUM> and <NUM> are preset to be connected to the external hanger body <NUM> at a position spaced apart from the central axis Oc. The hanger driving units <NUM> and <NUM> transmit vibrations of the vibrating bodies <NUM> and <NUM> to the hanger body <NUM>.

The hanger driving units <NUM> and <NUM> transmit the vibrations of the vibrating bodies <NUM> and <NUM> to the hanger body <NUM> on the connection axis Oh. The hanger driving units <NUM> and <NUM> may include the protrusions 58a and 358a protruding along the connection axis Oh. The protrusions 58a and 358a protrude downward from the hanger driving units <NUM> and <NUM>. The protrusions 58a and 358a protrude along the connection axis Oh. The hanger driving units <NUM> and <NUM> may include connecting rods 58a and 58b (358a and 358b) including the protrusions 58a and 358a. The connecting rods 58a and 58b (358a and 358b) may be configured as separate members. One end 58a and 358a of the connecting rods 58a and 58b (358a and 358b) may be inserted into the slit 31bh of the hanger driven unit 31b. The connecting rods 58a and 58b (358a and 358b) convert the rotational movements of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> to reciprocate the hanger body <NUM> right and left.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may include the motors <NUM> and <NUM> which generate the rotational forces of the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM>. The motors <NUM> and <NUM> are disposed in the vibrating bodies <NUM> and <NUM>. The motors <NUM> and <NUM> include rotating motor shafts 52a and 352a. For example, each of the motors <NUM> and <NUM> include a rotor and a stator, and the motor shafts 52a and 352a can rotate integrally with the rotor. The motor shafts 52a and 352a transmit the rotational force to the transmission units <NUM>, <NUM>, and <NUM>.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may include the transmit units <NUM>, <NUM>, and <NUM> which respectively transmit the rotational forces of the motors <NUM> and <NUM> to the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM>. Each of the transmission units <NUM>, <NUM>, and <NUM> may include a gear, a belt, and/or a pulley.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> may include the weight shafts 54a, 54b, and <NUM> which provide functions of the first rotation axis Ow1 and the second rotation axis Ow2. The weight shafts 54a, 54b, and <NUM> can be fixed to the vibrating bodies <NUM> and <NUM>. The weight shafts 54a, 54b, and <NUM> are disposed on the first rotation axis Ow1 and/or the second rotation axis Ow2. The weight shafts 54a, 54b, and <NUM> are disposed to penetrate the first eccentric portions <NUM> and <NUM> and/or the second eccentric portions <NUM> and <NUM>.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> include elastic member engaging portions <NUM> and <NUM> with which one end of the elastic members <NUM> and <NUM> engages. The elastic member engaging portions <NUM> and <NUM> may be disposed in the vibrating bodies <NUM> and <NUM>. The elastic member engaging portions <NUM> and <NUM> may press the elastic members <NUM> and <NUM> or receive elastic forces from the elastic members <NUM> and <NUM> during the movements of the vibration modules <NUM>, <NUM>, <NUM> and <NUM>.

Hereinafter, an operation mechanism of each of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> will be described with reference to <FIG>.

The vibration directions +X and -X mean a preset direction to allow the hanger body <NUM> to reciprocate, and in the present.

embodiment, the right and left directions are preset to the vibration directions +X and -X.

In the present specification, the "central axis Oc, the first rotation axis Ow1, the second rotation axis Ow2, and the connection axis Oh" refer to virtual axes for explaining the present disclosure and do not refer to actual parts of the apparatus.

The central axis Oc means a virtual straight line which becomes a center of rotation of each of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM>. The central axis Oc is a virtual straight line which maintains a fixed position relative to the frame <NUM>. The central axis Oc may extend in an up-down direction.

In order to provide the function of the central axis Oc, as in the present embodiment, central shaft portions <NUM> and <NUM> protruding along the central axis Oc from the support member <NUM> are formed, and a central groove <NUM> or a central hole with which the central shaft portions <NUM> and <NUM> rotatably engage may be formed in the vibrating bodies <NUM> and <NUM>. In order to provide the function of the central axis Oc, as another embodiment, a protrusion protruding along the central axis Oc is formed in the vibrating bodies <NUM> and <NUM>, and a groove with which the protrusion rotatably engages may be formed in the support member <NUM>.

The first rotation axis Ow1 means a virtual straight line which becomes a rotation center of each of the first eccentric portions <NUM> and <NUM>. The first rotation axis Ow1 maintains a fixed position with respect to the vibrating bodies <NUM> and <NUM>. That is, even if the vibrating bodies <NUM> and <NUM> move, the first rotation axis Ow1 moves integrally with the vibrating bodies <NUM> and <NUM> and maintains a relative position with respect to the vibrating bodies <NUM> and <NUM>. The first rotation axis Ow1 may extend in the up-down direction.

In order to provide the function of the first rotation axis Ow1, the weight shafts 54a and <NUM> disposed on the first rotation axis Ow1 may be provided as in this embodiment. In order to provide the function of the first rotation axis Ow1, as another embodiment, protrusions formed along the first rotation axis Ow1 may be formed in any one of the first eccentric portions <NUM> and <NUM> and the vibrating bodies <NUM> and <NUM>, and grooves with which the protrusions rotatably engage may be formed in the other thereof.

The second rotation axis Ow2 means a virtual straight line which becomes the rotation center of each of the second eccentric portions <NUM> and <NUM>. The second rotation axis Ow2 maintains a fixed position with respect to the vibrating bodies <NUM> and <NUM>. That is, even if the vibrating bodies <NUM> and <NUM> move, the second rotation axis Ow2 moves integrally with the vibrating bodies <NUM> and <NUM> and maintains a relative position with respect to the vibrating bodies <NUM> and <NUM>. The second rotation axis Ow2 may extend in the up-down direction.

In order to provide the function of the second rotation axis Ow2, as in the present embodiment, the weight shafts 54b and <NUM> disposed on the second rotation axis Ow2 may be provided. However, as another embodiment, a protrusion protruding along the second rotation axis Ow2 is provided in one of the second eccentric portions <NUM> and <NUM> and the vibrating bodies <NUM> and <NUM>, and a groove with which the protrusion rotatably engages may be formed in the other.

The connection axis Oh means a virtual straight line spaced apart from the central axis Oc. The connection axis Oh is disposed parallel to the central axis Oc. The connection axis Oh maintains a fixed position with respect to the vibrating bodies <NUM> and <NUM>. That is, even if the vibrating bodies <NUM> and <NUM> move, the connection axis Oh moves integrally with the vibrating bodies <NUM> and <NUM> and maintains a relative position with respect to the vibrating bodies <NUM> and <NUM>. The connection axis Oh may extend in the up-down direction. The portions 58a and 358a protruding along the connection axis Oh are formed at a connection point of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> and the hanger body <NUM> so that rotation reciprocations of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> are converted into a linear reciprocation of the hanger body <NUM>.

A circumferential direction DI means a circumferential direction about the central axis Oc, and includes a clockwise direction DI1 and a counterclockwise direction DI2. The clockwise direction DI1 and the counterclockwise direction DI2 are defined based on a state viewed from one +Z of the extension directions +Z and -Z of the central axis Oc.

When a direction of a centrifugal force F1 with respect to the first rotation axis Ow1 according to the rotations of the first eccentric portions <NUM> and <NUM> is the circumferential direction DI, the centrifugal force F1 induces rotations of the vibrating bodies <NUM> and <NUM> with respect to the central axis Oc. In addition, when a direction of a centrifugal force F2 with respect to the second rotation axis Ow2 according to rotations of the second eccentric portions <NUM> and <NUM> is the circumferential direction DI, the centrifugal force F2 induces the rotations of the vibrating bodies <NUM> and <NUM> with respect to the central axis Oc.

A radial direction Dr means a direction intersecting the central axis Oc and includes a centrifugal direction Dr1 and a mesial direction Dr2. The centrifugal direction Dr1 means a direction away from the central axis Oc, and the mesial direction Dr2 means a direction closer to the central axis Oc.

When the direction of the centrifugal force F1 with respect to the first rotation axis Ow1 according to the rotations of the first eccentric portions <NUM> and <NUM> is the radial direction Dr, the centrifugal force F1 does not induce the rotations of the vibrating bodies <NUM> and <NUM> with respect to the central axis Oc. In addition, when the direction of the centrifugal force F2 with respect to the second rotation axis Ow2 according to the rotations of the second eccentric portions <NUM> and <NUM> is the radial direction Dr, the centrifugal force F2 does not induce the rotations of the vibrating bodies <NUM> and <NUM> with respect to the central axis Oc.

<FIG> illustrate a center of gravity m1 of each of the first eccentric portions <NUM> and <NUM>, a center of gravity m2 of each of the second eccentric portions <NUM> and <NUM>, a rotation radius r1 of the center of gravity m1 with respect to the first rotation axis Ow1, a rotation radius r2 of the center of gravity m2 with respect to the second rotation axis Ow2, an angular speed w of each of the first eccentric portions <NUM> and <NUM> about the first rotation axis Ow1, an angular speed w of each of the second eccentric portions <NUM> and <NUM> about the second rotation axis Ow2, a distance A1 between the center axis Oc and the first rotation axis Ow1, a distance A2 between the central axis Oc and the second rotation axis Ow2, and a distance B between the central axis Oc and the connection axis Oh.

Moreover, <FIG> illustrate the direction of the centrifugal force F1 of the first eccentric portions <NUM> and <NUM> with respect to the first rotation axis Ow1 and the direction of the centrifugal force F2 of each of the second eccentric portions <NUM> and <NUM> with respect to the second rotation axis Ow2. A combined force of the centrifugal force F1 and the centrifugal force F2 is the rotational force of each of the vibrating bodies <NUM> and <NUM>. The exciting force Fo is the combined force of the centrifugal force F1 and the centrifugal force F2 expressed by an external force having an action point on the connection axis Oh in consideration of moment arm lengths A1, A2, and B.

A magnitude of the centrifugal force F1 is m1 · r1 · w<NUM>, and a magnitude of the centrifugal force F2 is m2 · r2 · w<NUM>. The centrifugal force F1 and the centrifugal force F2 are applied to the vibrating bodies <NUM> and <NUM>, and the action points of the centrifugal force F1 and centrifugal force F2 are located at the first rotation axis Ow1 and the second rotation axis Ow2, respectively.

Referring to <FIG>, <FIG>, <FIG>, and <FIG>, when the centrifugal force F1 and the centrifugal force F2 are provided to be reinforced with each other when the rotational forces of the vibrating bodies <NUM> and <NUM> about the central axis Oc are generated. When the weights of the first eccentric portions <NUM> and <NUM> are eccentric to the first rotation axis Ow1 in one direction D1 of the clockwise direction DI1 and the counterclockwise direction DI2 based on the central axis Oc, the weights of the second eccentric portions <NUM> and <NUM> are provided to be eccentric to the second rotation axis Ow2 in the one direction D1. When the first eccentric portions <NUM> and <NUM> generate the centrifugal force with respect to the first rotation axis Ow1 in the one direction D1 of the clockwise direction DI1 and the counterclockwise direction DI2 based on the central axis Oc, the second eccentric portions <NUM> and <NUM> are provided to generate the centrifugal force with respect to the second rotation axis Ow2 in the one direction D1. In this case, a moment (A1 · F1 + A2 · F2) by the centrifugal force F1 and the centrifugal force F2 is equivalent to a moment ( <MAT>) by the exciting force Fo, Fo is.

With reference to <FIG>, <FIG>, <FIG>, and <FIG>, the centrifugal force F1 and the centrifugal force F2 are provided to have directions opposite to each other when the vibrating bodies <NUM> and <NUM> do not generate the rotational force about the central axis Oc. When the weights of the first eccentric portions <NUM> and <NUM> are eccentric with respect to the first rotation axis Ow1 in one direction D2 of the centrifugal direction Dr1 and the mesial direction Dr2 based on the central axis Oc, the weights of the second eccentric portions <NUM> and <NUM> are provided to be eccentric with respect to the second rotation axis Ow2 in a direction opposite to the one direction D2. When the first eccentric portions <NUM> and <NUM> generate the centrifugal force with respect to the first rotation axis Ow1 in one direction D2 of the centrifugal direction Dr1 and the mesial direction Dr2 based on the central axis Oc, the second eccentric portions <NUM> and <NUM> are provided to generate the centrifugal force with respect to the second rotation axis Ow2 in the direction opposite to the one direction D2.

The centrifugal force F1 and the centrifugal force F2 are provided to cancel each other when the rotation forces of the vibrating bodies <NUM> and <NUM> are not generated. In this case, application directions of the centrifugal force F1 and the centrifugal force F2 are opposite to each other, a magnitude of the combined force of the centrifugal force F1 and the centrifugal force F2 is equal to a difference value between the magnitude of the centrifugal force F1 and the magnitude of the centrifugal force F2. Accordingly, at least one of the centrifugal force F1 and the centrifugal force F2 is canceled by the other.

The vibration modules <NUM>, <NUM>, <NUM>, and <NUM> are rotated to move the hanger body <NUM>, the centrifugal force F1 and the centrifugal force F2 which induce the rotations of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> in the circumferential direction D1 are reinforced with each other to generate vibrations in the predetermined vibration directions +X and -X, the centrifugal force F1 and the centrifugal force F2 which do not induce the rotations of the vibration modules <NUM>, <NUM>, <NUM>, and <NUM> in the radial direction Dr cancel each other and suppress the generation of the vibrations in the vertical directions +Y and -Y in the vibration directions +X and -X of the hanger body <NUM>.

Preferably, when the rotational forces of the vibrating bodies <NUM> and <NUM> are not generated, the centrifugal force F1 and the centrifugal force F2 may be provided to completely cancel each other. Here, the "complete cancellation" means that the combined force of the centrifugal force F1 and the centrifugal force F2 is <NUM>. Accordingly, it is possible to minimize occurrences of the unnecessary vibrations in the directions +Y and -Y perpendicular to the predetermined vibration directions +X and - X.

In order to completely cancel the centrifugal force F1 and the centrifugal force F2 in the radial direction D4 to each other, a scalar quantity m1 · r1 and a scalar quantity m2 · r2 may be provided to cancel each other.

The rotation radius r1 with respect to the first rotation axis Ow1 of the center of gravity of the first eccentric portions <NUM> and <NUM> and the rotation radius r1 with respect to the second rotation axis Ow2 of the center of gravity of the second eccentric portions <NUM> and <NUM> may provided to be same as each other (r1 = r2). The weight m1 of the first eccentric portions <NUM> and <NUM> and the weight m2 of the second eccentric portions <NUM> and <NUM> may be provided to be same as each other (m1 = m2). The centrifugal force F1 and the centrifugal force F2 in the radial direction Dr can be completely cancelled each other by the two settings (r1 = r2, m1 = m2). Of course, even if the rotation radius r1 and the rotation radius r2 are different from each other and the weight m1 and the weight m2 are different from each other, m1 · r1 and m2 · r2 may be provided to be same as each other so that the centrifugal force F1 and the centrifugal force F2 in the radial direction Dr can completely cancel each other.

The distance A1 between the first rotation axis Ow1 and the central axis Oc and the distance A2 between the second rotation axis Ow2 and the central axis Oc may be provided to be same as each other. Accordingly, ratios of the centrifugal force F1 and the centrifugal force contributing the generation of the exciting force Fo may be the same as each other so that a fatigue load is prevented be concentrated on one of a portion supporting the first eccentric portions <NUM> and <NUM> and a portion supporting the second eccentric portions <NUM> and <NUM>.

The first rotation axis Ow1 and the second rotation axis Ow2 may be spaced apart from the central axis Oc in the same direction or opposite directions. The central axis Oc, the first rotation axis Ow1, and the second rotation axis Ow2 are disposed to vertically intersect one virtual line. In the first and second embodiments, the first rotation axis Ow1 and the second rotation axis Ow2 are spaced apart from the central axis Oc in directions opposite to each other, and in the third embodiment, the first rotation axis Ow1 and the second rotation axis are spaced apart from the central axis Oc in the same direction as each other. Accordingly, it is possible to cancel the centrifugal force F1 and the centrifugal force F2 in the radial direction Dr each other.

An angular speed w about the first rotation axis Ow1 of the first eccentric portions <NUM> and <NUM> and an angular speed w about the second rotation axis Ow2 of the second eccentric portions <NUM> and <NUM> may be preset to be same as each other. Accordingly, it is possible to periodically reinforce and cancel the centrifugal forces F1 and F2 according to the rotation of the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM>.

Here, the angular speed refers to a scalar which does not have a direction of rotation and only have a size, and is different from an angular velocity which is a vector having a direction and a size of rotation. That is, the angular speed w of the first eccentric portions <NUM> and <NUM> and the angular speed w of the second eccentric portions <NUM> and <NUM> being the same as each other does not includes the rotation directions thereof being the same as each other. For example, although the angular speed w of the first eccentric portions <NUM> and <NUM> and the angular speed w of the second eccentric portions <NUM> and <NUM> are the same as each other, as in the first and second embodiments (refer to <FIG>), the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM> may be rotated in the same direction to each other, and as in the third embodiment (refer to <FIG>), the first eccentric portion <NUM> and the second eccentric portions <NUM> and,<NUM> may rotate in rotation directions opposite to each other.

Hereinafter, operation mechanisms of the vibration modules <NUM> and <NUM> according to the first and second embodiments will be described with reference to <FIG> as follows. Here, the first rotation axis Ow1 and the second rotation axis Ow2 are different from each other. A rotation direction around the first rotation axis Ow1 of the first eccentric portion <NUM> and a rotation direction around the second rotation axis Ow2 of the second eccentric portion <NUM> are the same as each other. The hanger driving unit <NUM> is fixed to the vibrating body <NUM> and rotates integrally with the vibrating body <NUM>.

In the first and second embodiments, the first rotation axis Ow1 and the second rotation axis Ow2 are spaced apart from the central axis Oc in directions opposite to each other. In addition, the first rotation axis Ow1 and the second rotation axis Ow2 may be disposed symmetrically to each other about the central axis Oc. Accordingly, it is possible to prevent the vibrating body <NUM> from being eccentric to one side based on the central axis (Oc) due to the weights m1 and m2 of the first and second eccentric portions <NUM> and <NUM>.

Referring to <FIG> and <FIG>, when the centrifugal force F1 of the first eccentric portion <NUM> and the centrifugal force F2 of the second eccentric portion <NUM> cancel each other, application directions of the centrifugal force F1 and the centrifugal force F2 are the centrifugal direction Dr1 or the mesial direction Dr2.

<FIG> illustrate a state of each moment when the first eccentric portion <NUM> and the second eccentric portion <NUM> rotating in the same angular speed w are rotated by <NUM>°.

Referring to <FIG>, when the first eccentric portion <NUM> generates the centrifugal force F1 with respect to the first rotation axis Ow1 in the clockwise direction DI1, the second eccentric portion <NUM> generates the centrifugal force F2 with respect to the second rotation axis Ow2 in the clockwise direction DI1. Accordingly, the centrifugal force F1 and the centrifugal force F2 are reinforced with each other to generate the rotation force in the clockwise direction of the vibrating body <NUM>. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh is applied in the clockwise direction DI1.

Referring to <FIG>, when the first eccentric portion <NUM> generates the centrifugal force F1 with respect to the first rotation axis Ow1 in the mesial direction Dr2, the second eccentric portion <NUM> generates a centrifugal force with respect to the second rotation axis Ow2 in the mesial direction Dr2. Accordingly, the centrifugal force F1 and the centrifugal force F2 do not generate the rotational force of the vibrating body <NUM>. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh becomes <NUM>. In addition, the centrifugal force F1 and the centrifugal force F2 are applied in the directions opposite to each other and are canceled each other.

Referring to <FIG>, when the first eccentric portion <NUM> generates the centrifugal force F1 with respect to the first rotation axis Ow1 in the counterclockwise direction DI2, the second eccentric portion <NUM> generates a centrifugal force F2 with respect to the second rotation axis Ow2 in the counterclockwise direction DI2. Accordingly, the centrifugal force F1 and the centrifugal force F2 are reinforced with each other to generate the rotational force of the vibrating body <NUM> in the counterclockwise direction DI2. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh is applied in the counterclockwise direction DI2.

Referring to <FIG>, when the first eccentric portion <NUM> generates a centrifugal force F1 with respect to the first rotation axis Ow1 in the centrifugal direction Dr1, the second eccentric portion <NUM> generates the centrifugal force with respect to the second rotation axis Ow2 in the centrifugal direction Dr1. Accordingly, the centrifugal force F1 and the centrifugal force F2 do not generate the rotational force of the vibrating body <NUM>. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh becomes zero. In addition, the centrifugal force F1 and the centrifugal force F2 are applied in the directions opposite to each other and are canceled each other.

Hereinafter, an operation mechanism of the vibration module <NUM> according to the third embodiment will be described with reference to <FIG>. Here, the first rotation axis Ow1 and the second rotation axis Ow2 are the same as each other. The rotation direction around the first rotation axis Ow1 of the first eccentric portion <NUM> and the rotation direction around the second rotation axis Ow2 of the second eccentric portion <NUM> are opposite to each other. The hanger driving unit <NUM> is fixed to the vibrating body <NUM>, and rotates integrally with the vibrating body <NUM>.

In the third embodiment, the first rotation axis Ow1 and the second rotation axis Ow2 are spaced apart from the central axis Oc in the same direction.

Referring <FIG> and <FIG>, when the centrifugal force F1 of the first eccentric portion <NUM> and the centrifugal force F2 of the second eccentric portion <NUM> cancel each other, one of the application directions of the centrifugal force F1 and the centrifugal force F2 is the centrifugal direction Dr1 and the other is the mesial direction Dr2.

Referring to <FIG>, when the first eccentric portion <NUM> generates the centrifugal force F1 with respect to the first rotation axis Ow1 in the centrifugal direction Dr1, the second eccentric portion <NUM> generates the centrifugal force with respect to the second rotation axis Ow2 in the mesial direction Dr2. Accordingly, the centrifugal force F1 and the centrifugal force F2 do not generate the rotational force of the vibrating body <NUM>. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh becomes <NUM>. In addition, the centrifugal force F1 and the centrifugal force F2 are applied in the directions opposite to each other and are canceled each other.

Referring to <FIG>, when the first eccentric portion <NUM> generates the centrifugal force F1 with respect to the first rotation axis Ow1 in the counterclockwise direction DI2, the second eccentric portion <NUM> generates the centrifugal force F2 with respect to the second rotation axis Ow2 in the counterclockwise direction DI2. Accordingly, the centrifugal force F1 and the centrifugal force F2 are reinforced with each other to generate the rotational force of the vibrating body <NUM> in the counterclockwise direction DI2. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh is applied in the counterclockwise direction DI2.

Referring to <FIG>, when the first eccentric portion <NUM> generates the centrifugal force F1 with respect to the first rotation axis Ow1 in the mesial direction Dr2, the second eccentric portion <NUM> generates the centrifugal force with respect to the second rotation axis Ow2 in the centrifugal direction Dr1. Accordingly, the centrifugal force F1 and the centrifugal force F2 do not generate the rotational force of the vibrating body <NUM>. The exciting force Fo transmitted to the hanger body <NUM> on the connection axis Oh becomes zero. In addition, the centrifugal force F1 and the centrifugal force F2 are applied in the directions opposite to each other and are canceled each other.

Hereinafter, configurations of the vibration modules <NUM>, <NUM>, <NUM>, the elastic member <NUM>, and the support member <NUM> according to the first and second embodiments will be described in more detail with reference to <FIG> as follows.

The vibrating body <NUM> may include a weight casing 51b accommodating the first eccentric portion <NUM> and the second eccentric portion <NUM> therein. The weight casing 51b may form an outer shape of an upper portion of the vibration module <NUM>. The upper ends of the weight shafts 54a and 54b are fixed to the weight casing 51b. The weight casing 51b includes a first part 51b1 covering the upper portions of the first eccentric portions <NUM> and <NUM>, and a second part 51b2 covering the upper portions of the second eccentric portions <NUM> and <NUM>. An upper end of the first weight shaft 54a is fixed to the first part 51b1. An upper end of the second weight shaft 54b is fixed to the second part 51b2.

The vibrating body <NUM> may include a base casing 51d forming an outer shape of the lower portion. Lower ends of the weight shafts 54a and 54b are fixed to the base casing 51d. The first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM> are disposed between the weight casing 51b and the base casing 51d. The first eccentric portions <NUM> and <NUM> are disposed between the first part 51b1 and the base casing 51d. The second eccentric portions <NUM> and <NUM> are disposed between the second part 51b2 and the base casing 51d.

The vibrating body <NUM> may include a motor support portion 51e which supports the motor <NUM>. The motor support portion 51e may support a lower end of the motor <NUM>. The motor support portion 51e is disposed between the first part 51b1 and the second part 51b2. The motor shaft 52a may be disposed through the motor support portion 51e. The motor support portion 51e may be fixed to the weight casing 51b, and may be integrally formed with the weight casing 51b.

The vibrating body <NUM> may include an elastic member mount 51c with which one end of at least one elastic member 60a engages. The elastic member mount 51c may be disposed on the upper portion of the vibrating body <NUM>. The elastic member mount 51c may be fixed to the upper ends of the first part 51b1 and the second part 51b2. The elastic member mount 51c may be disposed across the central axis Oc. The central shaft portion <NUM> may be disposed to penetrate the elastic member mount 51c.

The vibrating body <NUM> may form the central groove <NUM> or the central hole into which the central shaft portion <NUM> is inserted. The central groove <NUM> may be formed an upper side and/or a lower side of the vibrating body <NUM>. In the present embodiment, the central groove <NUM> is formed in the elastic member mount 51c. A bearing B1 is disposed in the central groove <NUM> so that the vibrating body <NUM> can be rotatably supported by the central shaft portion <NUM>.

The motor <NUM> may be disposed on the central axis Oc. The motor <NUM> is disposed between the first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM>. The motor <NUM> has a motor shaft 52a disposed on the central axis Oc. The motor shaft 52a protrudes downward and is connected to the transmission units <NUM> and <NUM>. Accordingly, it is possible to prevent eccentricity toward one side due to the weight of the motor <NUM> about the central axis Oc.

The transmission units <NUM> and <NUM> include center transmission units 153c and 253c which rotate integrally with the motor shaft 52a. The center transmission units 153c and 253c may be fixed to the motor shaft 52a. The transmission units <NUM> and <NUM> may include first transmission units 153a and 253a including gears or belts which transmit the rotational forces of the center transmission units 153c and 253c to the first eccentric portions <NUM> and <NUM>. The transmission units <NUM> and <NUM> may include second transmission units 153b and 253b including gears or belts which transmit the rotational forces of the center transmission units 153c and 253c to the second eccentric portions <NUM> and <NUM>.

The first weight shaft 54a and the second weight shaft 54b are formed as separate members. The first weight shaft 54a is disposed on the first rotation axis Ow1. The second weight shaft 54b is disposed on the second rotation axis Ow2. The first weight shaft 54a and the second weight shaft 54b are disposed in directions opposite to each other based on the central axis Oc. The first weight shaft 54a and the second weight shaft 54b are symmetrically disposed based on the central axis Oc. The first weight shaft 54a and the second weight shaft 54b are fixed to the vibrating body <NUM>. The first weight shaft 54a is disposed to penetrate the first rotating portions 155b and 255b. The second weight shaft 54b is disposed to penetrate the second rotating portions 156b and 256b.

The first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM> are disposed in the directions opposite to each other based on the central axis Oc. The first eccentric portions <NUM> and <NUM> and the second eccentric portions <NUM> and <NUM> may be disposed to face each other horizontally. The first eccentric portions <NUM> and <NUM> may be disposed on one side +X of the vibration directions +X and -X, and the second eccentric portions <NUM> and <NUM> may be disposed on the other side -X.

The first eccentric portions <NUM> and <NUM> may include the first weight member 55a and the first rotating portions 155b and 255b. The first rotating portions 155b and 255b may include a central portion 55b1 rotatably contacting the first weight shaft 54a. The first weight shaft 54a is disposed to penetrate the central portion 55b1. The central portion 55b1 extends along the first rotation axis Ow1. The central portion 55b1 forms a central hole along the first rotation axis Ow1. The central portion 55b1 may be formed in a pipe shape.

The first rotating portions 155b and 255b may include a peripheral portion 55b2 seated on the central portion 55b1. The central portion 55b1 is disposed to penetrate the peripheral portion 55b2. The peripheral portion 55b2 may be formed in a cylindrical shape extending along the first rotation axis Ow1 as a whole. A seating groove 55b3 on which the first weight member 55a is seated may be formed in the peripheral portion 55b2. The seating groove 55b3 may be formed such that an upper side thereof is open. A side surface in the centrifugal direction of the seating groove 55b3 based on the first rotation axis Ow1 may be formed to be blocked. The peripheral portion 55b2 and the first weight member 55a rotate integrally with each other.

The second eccentric portions <NUM> and <NUM> may include a second weight member 56a and second rotating portions 156b and 256b. The second rotating portions 156b and 256b may include a central portion 56b1 rotatably contacting the second weight shaft 54a. The second weight shaft 54a is disposed to penetrate the central portion 56b1. The central portion 56b1 extends along the second rotation axis Ow2. The central portion 56b1 forms a central hole along the second rotation axis Ow2. The central portion 56b1 may be formed in a pipe shape.

The second rotating portions 156b and 256b may include a peripheral portion 56b2 seated on the central portion 56b1. The central portion 56b1 is disposed to penetrate the peripheral portion 56b2. The peripheral portion 56b2 may be formed in a cylindrical shape extending along the second rotation axis Ow2 as a whole. The peripheral portion 56b2 may have a seating groove 56b3 on which the second weight member 56a is seated. The seating groove 56b3 may be formed such that an upper side thereof is open. A side surface of the seating groove 56b3 in the centrifugal direction based on the second rotation axis Ow2 may be formed to be blocked. The peripheral portion 56b2 and the second weight member 56a rotate integrally with each other.

The hanger driving unit <NUM> includes a rotating protrusion 58c fixed to the vibrating body <NUM>. An upper end of the rotating protrusion 58c may be fixed to a lower portion of the vibrating body <NUM>. The rotating protrusion 58c rotates integrally with the vibrating body <NUM>. The rotation protrusion 58c is disposed to penetrate a lower support portion <NUM> along the central axis Oc. A bearing B2 is interposed between the rotation protrusion 58c and the lower support portion <NUM>, and thus, the rotating protrusion 58c can be rotatably supported by the lower support portion <NUM>. The rotating protrusion 58c can transmit the rotational force of the vibrating body <NUM> to the connecting rods 58a and 58b.

The hanger driving unit <NUM> includes the connecting rods 58a and 58b which transmit the rotational force of the vibration module <NUM> to the hanger body <NUM>. The connecting rods 58a and 58b are fixed to the rotating protrusion 58c, and rotate integrally with the rotating protrusion 58c. The connecting rods 58a and 58b may be fixed to the lower end of the rotating projection 58c. The connecting rods 58a and 58b include a centrifugal extension portion 58b extending in the centrifugal direction Dr1 from the rotating projection 58c. A distal end of the centrifugal extension portion 58b in the mesial direction Dr2 is fixed to the rotational projection 58c. The connecting rods 58a and 58b include the protrusion 58a protruding along the connection axis Oh. The protrusion 58a may protrude downward from the distal end of the centrifugal extension portion 58b in the centrifugal direction Dr1.

The vibration module <NUM> includes an elastic member engaging portion <NUM> with which one end of the elastic member <NUM> engages. When the vibration module <NUM> rotates about the central axis Oc, the elastic member <NUM> is elastically deformed by the elastic member engaging portion <NUM>, or a resilient force of the elastic member <NUM> is transmitted to the elastic member engaging portion <NUM>. The elastic member engaging portion <NUM> may be disposed to be fixed to the vibrating body <NUM>.

The elastic member engaging portion <NUM> may include a first engaging portion 59a with which one end of the first elastic member 60a engages. The first engaging portion 59a may be formed on an upper side of the elastic member mount 51c. The elastic member engaging portion <NUM> may include a second engaging portion (not illustrated) with which one end of the second elastic member 60b engages. The second catching portion is formed on a lower side of the base casing 51d. The elastic member engaging portion <NUM> may include a third engaging portion (not illustrated) with which one end of the third elastic member 60c engages. The third catching portion may be formed on the connecting rods 58a and 58b.

The elastic member <NUM> may be disposed between the vibration module <NUM> and the support member <NUM>. One end of the elastic member <NUM> is engaged by the vibration module <NUM> and the other end thereof is engaged by the elastic member seating portion <NUM> of the support member <NUM>. The elastic member <NUM> may include a torsion spring.

A plurality of elastic members 60a, 60b, and 60c may be provided. Each of the elastic member 60a, 60b, and 60c is provided to be elastically deformed when the vibration module <NUM> rotates in one of the clockwise direction DI1 and the counterclockwise direction and elastically restored when the vibration module <NUM> rotates in the other direction.

The first elastic member 60a is disposed above the vibration module <NUM>. One end of the first elastic member 60a may be engaged by the first engaging portion 59a, and the other end thereof may be engaged by the first seating portion 77a of the support member <NUM>. The first elastic member 60a may include a torsion spring disposed around the central shaft portion <NUM>.

The second elastic member 60b is disposed below the vibration module <NUM>. One end of the second elastic member 60b may be engaged by the second engaging portion of the vibration module <NUM>, and the other end thereof may be engaged by the second seating portion 77b of the support member <NUM>. The second elastic member 60b may include a torsion spring disposed around the rotation protrusion 58c.

The third elastic member 60c is disposed on a lower side of the lower support portion <NUM>. The third elastic member 60c may be disposed between the lower support portion <NUM> and the connecting rods 58a and 58b. One end of the third elastic member 60c may be engaged by the third engaging portion of the vibration module <NUM>, and the other end thereof may be engaged by a third seating portion (not illustrated) of the support member <NUM>.

The support member <NUM> includes a lower support portion <NUM> disposed below the vibrating body <NUM>. The lower support portion <NUM> may be formed in a horizontal plate shape. The lower support portion <NUM> has a hole formed on the central axis Oc, through which the rotating projection 58c penetrates. A bearing B2 is disposed in the hole of the lower support portion <NUM> so that the rotation protrusion 58c is rotatably supported.

The support member <NUM> includes an upper support portion <NUM> disposed above the vibrating body <NUM>. The upper support portion <NUM> may be formed in a horizontal plate shape. The support member <NUM> includes a central shaft portion <NUM> protruding along the central axis Oc from the upper support portion <NUM>. The central shaft portion <NUM> may protrude downward from a lower surface of the upper support portion <NUM>. A lower end of the central shaft portion <NUM> is inserted into the central groove <NUM> of the vibrating body <NUM>. The central shaft portion <NUM> rotatably supports the vibrating body <NUM> through the bearing B1.

The support member <NUM> includes the lower support portion <NUM> and a vertical extension portion <NUM> which extend to be connected to the upper support portion <NUM>. The vertical extension portions <NUM> extend in the up-down direction. A pair of vertical extension portions <NUM> may be disposed on both ends of the upper support portion <NUM>. The upper support portion <NUM> may be fixed to the lower support portion <NUM> by the vertical extension portions <NUM>.

The support member <NUM> includes the elastic member seating portion <NUM> with which one end of the elastic member <NUM> engages. The first seating portion 77a is fixed to a lower surface of the upper supporting portion <NUM>. The second seating portion 77b is disposed to be fixed to an upper surface of the lower support portion <NUM>. The third seating portion is disposed to be fixed to the lower surface of the lower support portion <NUM>.

The vibration module <NUM> can be modularized to be manufactured. The vibration module <NUM> manufactured may be assembled together with the support member <NUM> and the elastic member <NUM>. The support member <NUM> may include the lower part <NUM> and the upper parts <NUM> and <NUM>.

Referring to <FIG>, an assembly process of the modularized vibration module <NUM> and other parts will be described as follows. First, the elastic member 60b is assembled to the seating portion 77b disposed on an upper surface of the lower part <NUM>, and the elastic member 60a is assembled to the elastic member engaging portion 59a disposed on the upper side of the vibration module <NUM>. Thereafter, the upper parts <NUM> and <NUM> and the lower parts <NUM> are disposed on the upper and lower sides of the vibration module <NUM>, and the upper parts <NUM> and <NUM> and the lower part <NUM> are fastened to each other. In this case, the elastic member 60a is assembled to the seating portion 77a disposed on the lower surfaces of the upper parts <NUM> and <NUM>, and the elastic member 60b is assembled to an elastic member engaging portion (not illustrated) disposed on the lower surface of the vibration module <NUM>.

Hereinafter, the vibration module <NUM> according to the first embodiment will be described in more detail with reference to <FIG>.

The transmission unit <NUM> according to the first embodiment includes the gear-type center transmission unit 153c. The central axis Oc may be provided across the center of the center transmission unit 153c. The center transmission unit 153c may include a spur gear. The transmission unit <NUM> may include the first transmission unit 153a which rotates in engagement with the center transmission unit 153c. The first transmission unit 153a may include a spur gear. The transmission unit <NUM> may include a second transmission unit 153b which rotates in engagement with the center transmission unit 153c. The second transmission unit 153b may include a spur gear.

The transmission unit <NUM> includes a first transmission shaft 153f which provides a function of a rotation shaft of the first transmission unit 153a. The first transmission shaft 153f may be fixed to the vibrating body <NUM>. Moreover, the transmission unit <NUM> includes a second transmission axis <NUM> which provides a function of a rotation shaft of the second transmission unit 153b. The second transmission shaft <NUM> may be fixed to the vibrating body <NUM>.

The first eccentric portion <NUM> according to the first embodiment includes a tooth portion 155b4 which engages with the first transmission unit 153a and receives a rotational force. The toothed portion 155b4 are formed along a circumference of the peripheral portion 55b2. The rotational force of the motor shaft 52a is sequentially transmitted to the toothed portion 155b4 through the center transmission unit 153c and the first transmission unit 153a.

The second eccentric portion <NUM> according to the first embodiment includes a toothed portion 156b4 which engages with the second transmission unit 153b and receives a rotational force. The toothed portion 156b4 are formed along a circumference of the peripheral portion 56b2. The rotational force of the motor shaft 52a is sequentially transmitted to the toothed portion 156b4 through the center transmission unit 153c and the second transmission unit 153b.

For example, in <FIG>, when the center transmission unit 153c rotates in the clockwise direction, the first transmission unit 153a and the second transmission unit 153b rotate in the counterclockwise direction, and the first eccentric portion <NUM> and the second eccentric portion <NUM> rotates in the clockwise direction. In <FIG>, positions of the central axis Oc, the first rotation axis Ow1, the second rotation axis Ow2, and the connection axis Oh are illustrated.

Hereinafter, referring to <FIG>, the vibration module <NUM> according to the second embodiment will be described with reference to differences from the first embodiment.

The transmission unit <NUM> according to the second embodiment includes a pulley-type center transmission unit 253c. The central axis Oc may be provided across the center of the center transmission unit 253c. The transmission unit <NUM> may include the first transmission unit 253a wound and rotated around the center transmission unit 253c. The first transmission unit 253a may include a belt. The transmission unit <NUM> may include a second transmission unit 253b wound and rotated around the center transmission unit 253c. The second transmission unit 253b may include a belt.

The center transmission unit 253c includes a first pulley portion 253c1 around which the first transmission unit 253a is wound, and a second pulley portion 253c2 around which the second transmission unit 253b is wound. The first pulley portion 253c1 and the second pulley portion 253c2 may be arranged vertically.

The first eccentric portion <NUM> according to the second embodiment includes a pulley portion 255b5 which is wound by the first transmission unit 253a and receives a rotational force. The pulley portion 255b5 is formed along a circumference of the peripheral portion 55b2. The rotational force of the motor shaft 52a is sequentially transmitted to the pulley portion 255b4 through the center transmission unit 253c and the first transmission unit 253a.

The second eccentric portion <NUM> according to the second embodiment includes a pulley portion 256b5 which is wound by the second transmission unit 253a and receives a rotational force. The pulley portion 256b5 is formed along a circumference of the peripheral portion 56b2. The rotational force of the motor shaft 52a is sequentially transmitted to the pulley portion 256b4 through the center transmission unit 253c and the second transmission unit 253a.

For example, in <FIG>, when the center transmission unit 253c rotates in the clockwise direction, the first transmission unit 253a and the second transmission unit 253b are wound around the center transmission unit 253c and rotate in the clockwise direction, and the 1eccentric portion <NUM> and the second eccentric portion <NUM> rotate in the clockwise direction. In <FIG>, the positions of the central axis Oc, the first rotation axis Ow1, the second rotation axis Ow2, and the connection axis Oh are illustrated.

Hereinafter, referring to <FIG>, the configurations of the vibration module <NUM>, the elastic member <NUM>, and the support member <NUM> according to the third embodiment will be described in detail.

The vibrating body <NUM> may include the weight casing 351b which accommodates the first eccentric portion <NUM> and the second eccentric portion <NUM> therein. The weight casing 351b is disposed at a position spaced apart from the central axis Oc in the centrifugal direction Dr1.

The weight casing 351b may include a first part 351b1 forming an upper portion and a second part 351b2 forming a lower portion. The second part 351b2 may form an inner space forming a lower surface and a circumferential surface, and the first part 351b1 may cover an upper portion of the inner space. The first eccentric portion <NUM> and the second eccentric portion <NUM> may be disposed vertically in the inner space of the weight casing 351b. The weight casing 351b may be coupled to motor <NUM>. A hole into which the motor shaft 352a is inserted may be formed on a side surface of the weight casing 351b.

The vibrating body <NUM> may include a base casing 351d rotatably supported on the central shaft portion <NUM>. The central shaft portion <NUM> is disposed to penetrate the base casing 351d. The bearing B is interposed between the central shaft portion <NUM> and the base casing 351d. The base casing 351d is disposed between the weight casing 351b and an elastic member mount 351c.

The vibrating body <NUM> may include a motor support portion 351e which supports the motor <NUM>. The motor support portion 351e may support a lower end of the motor. The motor support portion 351e may be disposed between the weight casing 351b and the base casing 351d.

The vibrating body <NUM> may include the elastic member mount 351c with which one end of the elastic member <NUM> engages. When the vibration module <NUM> performs rotational vibration motion, the elastic member mount 351c presses the elastic member <NUM> or receives a restoring force from the elastic member <NUM>.

The elastic member mount 351c may be disposed on one end of the centrifugal direction Dr1 of the vibrating body <NUM>. The elastic member mount 351c may be extended to connect a portion between the central axis Oc and the connection axis Oh. The elastic member mount 351c may extend in a centrifugal direction Dr1 to form a distal end. The elastic member mount 351c is disposed on a side opposite to the first and second rotation axes Ow1 and Ow2 based on the central axis Oc. The elastic member mount 351c may be fixed to the base casing 351d. The elastic member mount 351c, the base casing 351d, and the motor support 351e may be integrally formed with each other.

The motor <NUM> may be disposed at a position spaced apart from the central axis Oc. The motor <NUM> may be disposed between the central axis Oc and the first and second rotation axes Ow1 and Ow2. The motor <NUM> has the motor shaft 352a that is vertically disposed with the central axis Oc. The motor shaft 352a may protrude in a centrifugal direction Dr1 from the motor. The motor shaft 352a protrude to be inserted into a portion between the first eccentric portion <NUM> and the second eccentric portion <NUM>. The motor shaft 352a is connected to the transmission unit <NUM>.

The transmission unit <NUM> includes a bevel gear 353a which rotates integrally with the motor shaft 352a. The bevel gear 353a forms a plurality of gear teeth arranged along the circumferential direction of the motor shaft 352a. Assuming an imaginary straight line disposed along a rotation axis of the motor shaft 352a, the bevel gear 353a includes a plurality of gear teeth having an inclination closer to the imaginary straight line as the gear teeth go in a protruding direction of the motor shaft 352a. The bevel gear 353a is disposed between the first eccentric portion <NUM> and the second eccentric portion <NUM>.

The transmission unit <NUM> may include a transmission shaft <NUM> rotatably supporting the bevel gear 353a. One end of the transmission shaft <NUM> may be fixed to the weight shaft <NUM> and the other end thereof may be inserted into the center of the bevel gear 353a. The transmission shaft <NUM> may be fixed to the central portion of the weight shaft <NUM>. The transmission shaft <NUM> is disposed between the first eccentric portion <NUM> and the second eccentric portion <NUM>.

The weight shaft <NUM> provides the function of the first rotation axis Ow1 and the function of the second rotation axis Ow2. The weight shaft <NUM> is disposed on the rotation axes Ow1 and Ow2. The weight shaft <NUM> is disposed at a position spaced apart from the central axis Oc in the centrifugal direction Dr1. The weight shaft <NUM> is fixed to the vibrating body <NUM>. The upper and lower ends of the weight shaft <NUM> are fixed to the weight casing 351b. The weight shaft <NUM> is disposed through the first rotating portion 355b and the second rotating portion 356b.

The first eccentric portion <NUM> and the second eccentric portion <NUM> may be arranged to be spaced apart from each other along the central axis Oc. The first eccentric portion <NUM> and the second eccentric portion <NUM> may be disposed to face each other vertically. The first eccentric portion <NUM> may be disposed above the second eccentric portion <NUM>.

The first eccentric portion <NUM> may include the first weight member 355a and the first rotating portion 355b. The first rotating portion 355b may include a central portion 355b1 rotatably contacting the weight shaft <NUM>. The weight shaft <NUM> is disposed to penetrate the central portion 355b1. The central portion 355b1 extends along the rotation axes Ow1 and Ow2. The central portion 355b1 forms a central hole along the rotation axes Ow1 and Ow2. The central portion 355b1 may be formed in a pipe shape.

The first rotating portion 355b may include a peripheral portion 355b2 seated on the central portion 355b1. The central portion 355b1 is disposed to penetrate the peripheral portion 355b2. The peripheral portion 355b2 may be formed in a cylindrical shape extending along the rotation axes Ow1 and Ow2 as a whole. The peripheral portion 355b2 may have a seating groove 355b3 on which the first weight member 355a is seated. The seating groove 355b3 may be formed such that an upper side thereof is open. A side surface of the seating groove 355b about the rotation axes Ow1 and Ow2 in the centrifugal direction may be formed to be blocked. The peripheral portion 355b2 and the first weight member 355a rotate integrally with each other.

The first eccentric portion <NUM> includes a toothed portion 355b4 which engages with the bevel gear 353a and receives a rotational force. The toothed portion 355b4 is formed on a lower surface of the peripheral portion 355b2. The toothed portion 355b4 is disposed around the rotation axes Ow1 and Ow2 in the circumferential direction. The toothed portion 355b4 has an inclination closer to the upper side as the toothed portion 355b4 goes away from the rotation axes Ow1 and Ow2.

The second eccentric portion <NUM> may include a second weight member 356a and a second rotating portion 356b. The second rotating portion 356b may include a central portion 356b1 rotatably contacting the weight shaft <NUM>. The weight shaft <NUM> is disposed to penetrate the central portion 356b1. The central portion 356b1 extends along the rotation axes Ow1 and Ow2. The central portion 356b1 forms a central hole along the rotation axes Ow1 and Ow2. The central portion 356b1 may be formed in a pipe shape.

The second rotating portion 356b may include a peripheral portion 356b2 seated on the central portion 356b1. The central portion 356b1 is disposed to penetrate the peripheral portion 356b2. The peripheral portion 356b2 may be formed in a cylindrical shape extending along the rotation axes Ow1 and Ow2 as a whole. The peripheral portion 356b2 may have a seating groove 356b3 on which a second weight member 356a is seated. The seating groove 356b3 may be formed such that a lower side thereof is open. A side surface of the seating groove 356b3 about the rotation axes Ow1 and Ow2 in the centrifugal direction may be formed to be blocked. The peripheral portion 356b2 and the second weight member 356a rotate integrally with each other.

The second eccentric portion <NUM> includes a toothed portion 356b4 which engages with the bevel gear 353a and receives a rotational force. The toothed portion 356b4 is formed on an upper surface of the peripheral portion 356b2. The toothed portion 356b4 is disposed around the rotation axes Ow1 and Ow2 in the circumferential direction. The toothed portion 356b4 has an inclination closer to the lower side as the toothed portion 356b4 goes away from the rotation axes Ow1 and Ow2.

For example, in <FIG>, when the motor shaft 352a and the bevel gear <NUM> rotate in one direction, the first eccentric portion <NUM> rotates in the counterclockwise direction, and the second eccentric portion <NUM> rotates in the clockwise direction. The first eccentric portion <NUM> and the second eccentric portion <NUM> rotate in directions opposite to each other.

The hanger driving unit <NUM> includes the connecting rods 358a and 358b fixed to the vibrating body <NUM>. Upper ends of the connecting rods 358a and 358b may be fixed to the vibrating body <NUM>. The connecting rods 358a and 358b rotate integrally with the vibrating body <NUM>. The connecting rods 358a and 358b may be disposed on the connection axis Oh. The connecting rods 358a and 358b may transmit the rotational force of the vibrating body <NUM> to the hanger body <NUM>.

The connecting rods 358a and 358b may include the vertical extension portion 358b extending in an up-down direction. The vertical extension portion 358b may extend along the connection axis Oh. An upper end of the vertical extension portion 358b may be fixed to the elastic member mount 351c. The connecting rods 358a and 358b include the protrusions 358a formed on a distal end of the vertical extension portion 358b. The protrusion 358a is disposed on a lower end of the vertical extension 358b.

The vibration module <NUM> includes the elastic member engaging portion <NUM> with which one end of the elastic member <NUM> engages. When the vibration module <NUM> rotates about the central axis Oc, the elastic member <NUM> is elastically deformed by the elastic member engaging portion <NUM>, or the resilient force of the elastic member <NUM> is transmitted to the elastic member engaging portion <NUM>. The elastic member engaging portion <NUM> is disposed on the elastic member mount 351c.

The elastic member engaging portion <NUM> may include the first engaging portion 359a with which one end of the first elastic member 360a engages. The first engaging portion 359a may be formed on one side +X of the elastic member mount 351c. The elastic member engaging portion <NUM> may include the second engaging portion 359b with which one end of the second elastic member 360b engages. The second engaging portion 359b may be formed on the other side -X of the elastic member mount 351c.

The elastic member <NUM> may be disposed between the vibration module <NUM> and the support member <NUM>. One end of the elastic member <NUM> is engaged by the vibration module <NUM> and the other end thereof is engaged by the elastic member seating portion <NUM> of the support member <NUM>. The elastic member <NUM> may include a tension spring and/or a compression spring. A pair of elastic members 360a and 360b may be disposed on both sides of the connection axis Oh in the vibration directions +X and -X. The elastic member <NUM> may be disposed at a position spaced apart from the central axis Oc.

The plurality of elastic members 360a and 360b may be provided. Each of the elastic members 360a and 360b may be provided to be elastically deformed when the vibration module <NUM> rotates in one of the clockwise direction DI1 and the counterclockwise direction D12, and restored elastically when the vibration module <NUM> rotates in the other direction. Each of the elastic members 360a and 360b may be provided to be elastically deformed when the hanger body <NUM> moves in one of the vibration directions +X and -X and elastically restored when the hanger body <NUM> moves in the other direction.

The first elastic member 360a is disposed on one side +X of the vibrating body <NUM>. One end of the first elastic member 360a may engage with the first engaging portion 359a, and the other end thereof may engage with the first seating portion 377a of the support member <NUM>. The first elastic member 360a may include a spring which is elastically deformed and elastically restored in the vibration directions +X and -X.

The second elastic member 360b is disposed on the other side -X of the vibrating body <NUM>. The elastic member mount 351c is disposed between the first elastic member 360a and the second elastic member 360b. One end of the second elastic member 360b may engage with the second engaging portion 359b, and the other end thereof may engage with the second seating portion 377b of the support member <NUM>. The second elastic member 360b may include a spring which is elastically deformed and elastically restored in the vibration directions +X and -X.

The support member <NUM> includes the central shaft portion <NUM> protruding along the central axis Oc. The central shaft portion <NUM> may protrude upward from a central shaft support <NUM>. The central shaft portion <NUM> is inserted into a hole formed in the vibrating body <NUM>. The central shaft portion <NUM> rotatably supports the vibrating body <NUM> through the bearing B.

The support member <NUM> may include a central axis support <NUM> to which the central shaft portion <NUM> is fixed. The central shaft support <NUM> may be disposed to be spaced downward from the vibrating body <NUM>. The central shaft support <NUM> is fixed to the frame <NUM>.

Claim 1:
A clothing treatment apparatus (<NUM>) comprising:
a frame (<NUM>);
a hanger body (<NUM>) which is disposed to be movable to the frame and is provided to hang clothing or a hanger;
a vibrating body (<NUM>, <NUM>) which is rotatably provided about a predetermined central axis (Oc) having a fixed relative position to the frame;
a first eccentric portion (<NUM>, <NUM>, <NUM>, <NUM>) which is supported by the vibrating body and configured to rotate with eccentric weight about a predetermined first rotation axis (Ow1) spaced apart from the central axis;
a second eccentric portion (<NUM>, <NUM>, <NUM>, <NUM>) which is supported by the vibrating body and configured to rotate with eccentric weight about a predetermined second rotation axis (Ow2) which is spaced apart from the central axis and is the same as or parallel to the first rotation axis; and
a hanger driving unit (<NUM>, <NUM>) which is disposed in the vibrating body and is connected to the hanger body at a position spaced apart from the central axis,
characterized in that
a centrifugal force of the first eccentric portion with respect to the first rotation axis and a centrifugal force of the second eccentric portion with respect to the second rotation axis are provided to be reinforced with each other when the vibrating body generates a rotational force about the central axis, and are provided in directions opposite to each other when the vibrating body does not generate the rotational force, and
wherein the eccentric weight of the first eccentric portion and the eccentric weight of the second eccentric portion are arranged to cancel a force to the vibrating body by both centrifugal forces in directions (+Y, -Y) perpendicular to predetermined vibration directions (+X, -X).