Patent Description:
D1 (<CIT>) describes a skin massage device which includes an air generator for generating air and supplying and a skin contact device for contacting supplied air on the skin, the air generator in which a piston is installed at the inside of a cylinder, an operation rod thereof is projected to the outside of the cylinder to connect a pressure part to the crank protrusions of a transmission shaft and a hose is connected to the discharge hole of the cylinder to connect generated air to the skin contact device; and the skin contact device is of a cup shape and detachably attached to the skin.

D2 (<CIT>) provides a cupping device for a cupping therapy, which includes a cup and an inhaler <NUM>. When the cup is placed on the skin, the inhaler is operated to directed the air in the cup out, so that the cup can suck on the skin tightly. The cup can slide on the skin smoothly by the lotion, and the protrusion can massage the skin simultaneously. As the massaging and the pressure stimulation are performed simultaneously, pores are open through which the body wastes and toxins leak, so that the marks and bruises on the skin are relieved.

D3 (<CIT>) provides a scalp treatment device, which includes a hand-held housing with a treatment head having an air-filled hollow space with a volume which is periodically varied by reciprocation of part of its enclosing wall, under control of battery operated electric drive motor. The application side of the hollow space is fitted with a treatment tool with a number of projecting prongs, at least some of which communicate with the air-filled hollow space and have an opening facing the scalp.

D4 (<CIT>) provides a massage device for massage by means of pressure waves, which includes a housing with a handle section and a massage section, at least one chamber having an opening leading to the outside in the massage section. The chamber has an end wall portion, a first peripheral wall portion and a second peripheral wall portion, the first peripheral wall portion being disposed between the end wall portion and the second peripheral wall portion. and the second peripheral wall portion defines the opening, the end wall portion being at least partially movable, and the massage device includes drive means for imparting a predetermined vibration to the end wall portion, and wherein the first peripheral wall portion is substantially rigid and the second peripheral wall portion is substantially flexible.

With the accelerated pace of life, working pressures on people are increased. After daily working, a person may be tired, various portions of a body may ache. In order to relieve fatigue and soreness, people may take a variety of massagers to massage the body, such as a negative pressure massager. The negative pressure massager may adsorb and relax the skin to relieve the fatigue and soreness, so as to sooth the body and mind. However, the negative pressure massager in the related art may have a complicated structure, and may have a poor adsorption effect.

Therefore, the massager in the related art needs to be improved to avoid the above defects.

The present disclosure provides a pressure generator and a massager which can improve suctioning effect thereof.

One aspect of the present disclosure provides a massager, which includes a flexible sleeve defining an adsorption port, a support shell defining an opening, a pressure generator mounted in the support shell, the pressure generator includes a housing with an opening communicated to the opening of the support shell and a receiving space, and a movable member movably inserted into the receiving space. The pressure generator further includes a driving device including a motor, and a transmission assembly having an eccentric transmission structure including an eccentric member and a connecting rod. The eccentric member connected with the motor, and the connecting rod connected between the eccentric member and the movable member. The flexible sleeve is configured to sleeve around the housing, the adsorption port is arranged in front of the housing and directly communicated with the opening of the housing, and the motor is configured to drive the movable member to reciprocate inside the receiving space without deformation, so as to periodically generate a negative pressure and a positive pressure at the adsorption port.

In at least one embodiment, the movable member includes a free end arranged in the receiving space, and a sealing ring arranged between the housing and the free end, the sealing ring surrounds the free end and resisting against between the free end and the housing.

In at least one embodiment, the free end defines a sealing slot configured to receive the sealing ring.

In at least one embodiment, the sealing ring includes an arc-shaped part and two fixing parts extending from two opposite sides of the arc-shaped part respectively, the two fixing parts are arranged at interval along a moving direction of the free end and extended toward the sealing ring, the arc-shaped part, the two fixing parts and the free end cooperate to define a space, and the arc-shaped part is configured to be deformed into the space.

In at least one embodiment, the pressure generator further includes a massaging member, the massaging member includes a connecting part connected to a side of the free end facing the opening of the housing, and at least one massaging part arranged on the connecting part away from the free end and configured to partially extend out of the housing through the opening of the housing.

In at least one embodiment, the movable member is configured to separate the housing into a first chamber communicating with the opening of the housing and a second chamber, and the movable member further includes a unidirectional exhaust structure configured to communicate the first chamber with the second chamber unidirectionally.

In at least one embodiment, the unidirectional exhaust structure includes at least one exhaust hole running through the free end to communicate the first chamber with the second chamber, and a vent plug arranged on the free end and configured to cover the at least one exhaust hole away from the first chamber.

In at least one embodiment, the vent plug includes a main part arranged on a side of the free end away from the opening of the housing, and at least one covering part made of elastic material, the at least one covering part is capable of being deformed to cover or open the at least one exhaust hole; or the vent plug includes a main part arranged on a side of the free end away from the opening of the housing and defining at least one through hole communicating with the at least one exhaust hole, and at least one surrounding wall extending away from the main part and surrounding the at least one through hole respectively, the at least one surrounding wall is made of elastic material and capable of being deformed to close or open the at least one through hole.

In at least one embodiment, the housing includes a rigid part with an opening, and an absorbing member with the opening of the housing arranged on an end of the absorbing member away from the opening of the rigid part, the movable member is arranged inside the rigid part, the absorbing member is connected to the rigid part at the opening of the rigid part and defines an air passage communicating with the opening of the rigid part.

In at least one embodiment, a gap is defined between the movable member and an inner wall of the housing, the gap is not greater than <NUM>.

In at least one embodiment, the pressure generator includes a protective sleeve made of a cushioning material and configured to sleeve an outside of the housing, the protective sleeve defines an opening communicated to the opening of the housing.

In at least one embodiment, the protective sleeve and the housing are spaced apart from each other to define a sound insulation space.

In at least one embodiment, the movable member includes a driving end connected to the driving device, and a free end connected to the driving end, and the free end defines a cavity communicated to the receiving space.

In at least one embodiment, at least one massaging protrusion is arranged on a side of the movable member facing the opening of the housing, the at least one massaging protrusion at least partially extends out of the opening of the housing; and/or the pressure generator includes a heating coil or a semiconductor refrigeration sheet arranged on the housing to adjust temperature at the opening of the housing.

Technical solutions in the embodiments of the present disclosure will be clearly and completely described below by referring to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of, but not all of, the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present disclosure and without making creative work shall fall within the scope of the present disclosure.

As shown in <FIG> and <FIG>, the present disclosure provides a massager <NUM>. The massager <NUM> is configured to massage a body of a user, especially to massage sensitive portions of the body. The massager <NUM> may generate a negative pressure to massage and stimulate the sensitive portions.

The massager <NUM> may include a support shell <NUM>, a pressure generator <NUM> arranged inside the support shell <NUM>, and a battery (not labelled) arranged inside the support shell <NUM>. The battery is configured to provide power to the pressure generator <NUM>. A flexible sleeve <NUM> may be arranged to sleeve on an outside of the support shell <NUM>, and the flexible sleeve <NUM> is configured to contact the human body. The flexible sleeve <NUM> defines an adsorption port <NUM>, and a periphery of a wall of the adsorption port <NUM> is configured to contact a skin of the human body. The support shell <NUM> defines a fourth opening <NUM> communicated to the adsorption port <NUM>. Periodic alternating positive and negative pressures generated by the pressure generator <NUM> may be conducted to the skin through the third opening <NUM> to stimulate the skin and achieve a massaging effect.

The flexible sleeve <NUM> may be made of a skin-friendly material, such as silicon, to improve the user experience.

The pressure generator <NUM> may be implemented by taking specific structures shown in the following embodiments.

Referring to <FIG>, a pressure generator 30a includes a housing <NUM> with a first opening <NUM> and a receiving space <NUM>, a movable member <NUM> (such as a piston) arranged inside the housing <NUM>, and a driving device <NUM> configured to drive the movable member <NUM> to reciprocated move inside the housing <NUM> so as to generate a negative pressure at the first opening <NUM>. The movable member <NUM> is configured to separate the receiving space <NUM> of the housing <NUM> into a first chamber <NUM> and a second chamber <NUM>. The first chamber <NUM> is communicated with the first opening <NUM>. When in use, the first opening <NUM> is attached to human body, and the driving device <NUM> is configured to drive the movable member <NUM> to move away from the first opening <NUM> so that a volume of the first chamber <NUM> is increased and the negative pressure is generated at the first opening <NUM>. Therefore, the first opening <NUM> can be sucked onto the human body under the negative pressure.

The housing <NUM> includes a rigid part <NUM> with a second opening <NUM>, and an absorbing member <NUM> which is flexible. The movable member <NUM> is arranged inside the rigid part <NUM>. The absorbing member <NUM> is connected to the rigid part <NUM> at the second opening <NUM>. The absorbing member <NUM> defines an air passage <NUM> communicating with the second opening <NUM> and the first opening <NUM>. The first opening <NUM> is formed at an end of the air passage <NUM> away from the second opening <NUM>.

In at least one embodiment, the rigid part <NUM> and the absorbing member <NUM> are integrally formed. It should be understood that, in at least one another embodiment, the rigid part <NUM> and the absorbing member <NUM> are formed independently, and the absorbing member <NUM> can be connected to the rigid part <NUM> by any suitable structures, such as adhesive glues.

Referring to <FIG>, the rigid part <NUM> includes a first chamber wall <NUM> extending along a moving direction of the movable member <NUM> and surrounding the second opening <NUM>, and a second chamber wall <NUM> connected to an end of the first chamber wall <NUM> away from the second opening <NUM>. A driving end <NUM> of the moveable member <NUM> is configured to movably extend through the second chamber wall <NUM> and connect the movable member <NUM> with the driving device <NUM>. The driving device <NUM> is configured to drive the driving end <NUM> to move so as to bring the movable member <NUM> to reciprocated move inside the housing <NUM>.

Referring to <FIG>, a self-lubricating sleeve <NUM> is arranged between the driving end <NUM> and the second chamber wall <NUM>, so that the driving end <NUM> may movably extend through the second chamber wall <NUM>, which facilitates reducing a fiction between the driving end <NUM> and the second chamber wall <NUM> when the driving end <NUM> moves relative to the second chamber wall <NUM>.

In at least one embodiment, the second chamber wall <NUM> defines at least one vent hole <NUM>. Referring to <FIG>, the number of the at least one vent hole <NUM> is multiple. In at least one embodiment, the at least one vent hole <NUM> is configured to run through the second chamber wall <NUM>. Through such arrangement, air can be vented outside of the housing <NUM> through the at least one vent hole <NUM> when the movable member <NUM> moves away from the first opening <NUM>. Therefore, a resistance of the movable member <NUM> moving away from the first opening <NUM> is reduced. Preferably, the at least one vent hole <NUM> is configured to run through the second chamber wall <NUM> along the moving direction of the movable member <NUM>.

The movable member <NUM> further includes a free end <NUM> connected to the driving end <NUM>, and a sealing ring <NUM> surrounding the free end <NUM>. The sealing ring <NUM> is configured to resist against between the free end <NUM> and the chamber wall of the housing <NUM> to ensure a sealing performance. In detail, the sealing ring <NUM> is configured to resist against between the free end <NUM> and the first chamber wall <NUM> of the housing <NUM>. Therefore, air is prevented from running between the first chamber <NUM> the second chamber <NUM>.

The driving end <NUM> is fixedly connected to the free end <NUM>, so that a movement of the driving end <NUM> can bring the movable member <NUM> to reciprocated move inside the housing <NUM>.

In at least one embodiment, the free end <NUM> defines a sealing slot <NUM> on an outer wall thereof, and the sealing ring <NUM> is at least partially arranged inside the sealing slot <NUM>.

In at least one embodiment, the sealing ring <NUM> includes an arc-shaped part <NUM> and two fixing parts <NUM> arranged on two opposite sides of the arc-shaped part <NUM> respectively. The arc-shaped part <NUM> is spaced from the free end <NUM>. The two fixing parts <NUM> are arranged at interval along the moving direction of the movable member <NUM> and extended toward the sealing slot <NUM> and received in the sealing slot <NUM>. The arc-shaped part <NUM> together with the two fixing parts <NUM> and the free end <NUM> defines a space <NUM>. The arc-shaped part <NUM> can be deformed into the space <NUM> so as to avoid jam during reciprocated moving of the movable member <NUM>. It should be understood that, in at least one embodiment, the sealing ring <NUM> can be an O-shaped sealing ring, such as a traditional rubber sealing ring.

Referring to <FIG>, in at least one embodiment, a center of curvature of the arc-shaped part <NUM> is located at a position facing the space <NUM>, which facilitate the deformation of the arc-shaped part <NUM> to move into the space <NUM>.

The driving device <NUM> includes a transmission assembly <NUM> and a motor <NUM>. The motor <NUM> is configured to connect to the driving end <NUM> through the transmission assembly <NUM>. The transmission assembly <NUM> can be any one of an eccentric transmission structure, a cam and a ball screw.

In at least one embodiment, the transmission assembly <NUM> has an eccentric transmission structure and includes an eccentric member <NUM> and a connecting rod <NUM>. The eccentric member <NUM> is connected to the motor <NUM>, and the connecting rod <NUM> is hinged with the driving end <NUM>. When the pressure generator 30a is in use, the motor <NUM> is configured to drive the movable member <NUM> to reciprocated move inside the housing <NUM> through the eccentric member <NUM>, the connecting rod <NUM>, and the driving end <NUM>.

Referring to <FIG> and <FIG>, a second embodiment of the present disclosure provides a pressure generator 30b. The difference between the pressure generator 30b of the second embodiment and the pressure generator 30a of the first embodiment is that the pressure generator 30b of the second embodiment further includes a massaging member <NUM>. The massaging member <NUM> includes a connecting part <NUM> connected to a side of the free end <NUM> facing the first opening <NUM> and at least one massaging protrusion <NUM> extending away from the connecting part <NUM>. The at least one massaging protrusion <NUM> is configured to partially extend out of the housing <NUM> through the first opening <NUM>. In at least one embodiment, when the movable member <NUM> moves toward the first opening <NUM> and moves to a position closest to the first opening <NUM>, the at least one massaging protrusion <NUM> at least partially extends out of the housing <NUM> so as to massage human body, thus improving user experience.

In at least one embodiment, the massaging member <NUM> and the sealing ring <NUM> are integrally formed. A periphery of the connecting part <NUM> is connected with the sealing ring <NUM>. It should be understood that, in at least one embodiment, the massaging member <NUM> and the sealing ring <NUM> can be two independent components and the massaging member <NUM> can be connected to the free end <NUM> of the movable member <NUM> with any suitable structures, such as adhesive glues.

Referring to <FIG>, a third embodiment of the present disclosure provides a pressure generator 30c. The difference between the pressure generator 30c of the third embodiment and the pressure generator 30a of the first embodiment is that the movable member <NUM>' of pressure generator 30c further includes a unidirectional exhaust structure <NUM> communicating with the first chamber <NUM> and the second chamber <NUM>. When the movable member <NUM>' moves towards the first opening <NUM>, the unidirectional exhaust structure <NUM> is configured to communicate the first chamber <NUM> with the second chamber <NUM> under the air pressure in the first chamber <NUM>; when the movable member <NUM>' moves away from the first opening <NUM>, the unidirectional exhaust structure <NUM> is configured to block the communication between the first chamber <NUM> and the second chamber <NUM> under the air pressure in the second chamber <NUM>. By setting the unidirectional exhaust structure <NUM>, when the movable member <NUM>' moves away from the first opening <NUM>, negative pressure is generated at the first opening <NUM>; when the movable member <NUM>' moves towards the first opening <NUM>, air in the first chamber <NUM> can be exhausted to the second chamber <NUM> through the unidirectional exhaust structure <NUM>, and the second chamber <NUM> is communicated with the outside. Thus, the resistance during the movement of the movable member <NUM>' can be reduced.

The unidirectional exhaust structure <NUM> includes at least one exhaust hole <NUM> running through the free end <NUM> of the movable member <NUM>' to communicate the first chamber <NUM> with the second chamber <NUM>, and a vent plug <NUM> arranged on a side of the free end <NUM> away from the first chamber <NUM> and configured to cover the at least one exhaust hole <NUM>. When the movable member <NUM>' moves towards the first opening <NUM>, the vent plug <NUM> is configured to move to open the exhaust hole <NUM> so that the first chamber <NUM> communicates with the second chamber <NUM> through the exhaust hole <NUM> under the air pressure in the first chamber <NUM>. When the movable member <NUM>' moves away from the first opening <NUM>, the vent plug <NUM> is configured to block the communication between the first chamber <NUM> and the second chamber <NUM> under the air pressure in the second chamber <NUM>.

Referring to <FIG> and <FIG>, the vent plug <NUM> is an annular sheet. In at least one embodiment, the vent plug <NUM> can be deformed. For example, the vent plug <NUM> can be made of silicon material to make the vent plug <NUM> flexible and soft. In detail, referring to <FIG>, the vent plug <NUM> includes a main part <NUM> arranged on the side of the free end <NUM> of the movable member <NUM>' away from the first opening <NUM> and at least one covering part <NUM> configured to cover the at least one exhaust hole <NUM>. The main part <NUM> defines at least one through hole <NUM>. The covering part <NUM> is extended from the main part <NUM> into the at least one through hole <NUM> respectively. In at least one embodiment, the covering part <NUM> can move relative to the main part <NUM>.

When the movable member <NUM>' moves away from the first opening <NUM>, the volume of the first chamber <NUM> is increased to decrease the air pressure in the first chamber <NUM> (a difference between the air pressure in the first chamber <NUM> and the air pressure in the second chamber <NUM> is not sufficient to prevent a deformation of the covering part <NUM>), therefore, the negative pressure is generated at the first opening <NUM> to generate a suction force applied on human body. At the same time, the covering part <NUM> covers the at least one exhaust hole <NUM> to block the communication between the first chamber <NUM> and the second chamber <NUM> under the negative pressure. With the volume of the first chamber <NUM> getting bigger, the negative pressure getting bigger, which forces the covering part <NUM> to remain covering the at least one exhaust hole <NUM> to keep blocking the communication between the first chamber <NUM> and the second chamber <NUM>. Therefore, the first opening <NUM> remains at a suction state.

When the movable member <NUM>' moves towards the first opening <NUM>, the volume of the first chamber <NUM> is decreased to decrease the negative pressure. The movable member <NUM>' compresses air in the first chamber <NUM> to increase the air pressure in the first chamber <NUM>. When a difference between the air pressure in the first chamber <NUM> and the air pressure in the second chamber <NUM> is greater enough to deform the covering part <NUM> to open the at least one exhaust hole <NUM>, air is vented from the first chamber <NUM> to the second chamber <NUM> to reduce the movement resistance of the movable member <NUM>'.

In at least one embodiment, the main part <NUM> can be connected to the free end <NUM> of the movable member <NUM>' by adhesive glues.

In at least one embodiment, referring to <FIG> and <FIG>, the number of the at least one exhaust hole <NUM> is multiple. Correspondingly, the number of the at least one through hole <NUM> and the number of the at least one covering part <NUM> are multiple.

In at least one embodiment, referring to <FIG> and <FIG>, a heating coil <NUM> or a semiconductor refrigeration sheet <NUM> is arranged on the rigid part <NUM>. In detail, the heating coil <NUM> or the semiconductor refrigeration sheet <NUM> are arranged on an outer side of the first chamber wall <NUM>. In at least one embodiment, the semiconductor refrigeration sheet <NUM> includes a hot end and a cold end opposite to the hot end. The hot end or the cold end can be attached to the first chamber wall <NUM> so as to adjust a temperature of the absorbing member <NUM>, thereby improving user's experiences. It should be understood that, in at least one embodiment, the semiconductor refrigeration sheet <NUM> can be replaced with the heating coil <NUM>.

The sealing ring <NUM>' can be a general O-shaped sealing ring, such as a rubber sealing ring. It should be understood that, in at least one embodiment, the sealing ring <NUM>' can be the sealing ring <NUM> described in the first embodiment. That is, the sealing ring <NUM>' can include the arc-shaped part <NUM> and two fixing parts <NUM> arranged two opposite sides of the arc-shaped part <NUM> respectively. The two fixing parts <NUM> are arranged at interval along the moving direction of the movable member and extended toward sealing slot <NUM> and received in the sealing slot <NUM> and received in the sealing slot <NUM>. The arc-shaped part <NUM> together with the two fixing parts <NUM> and the free end <NUM> defines a space <NUM>. The arc-shaped part <NUM> can be deformed into the space <NUM>.

Referring to <FIG>, a fourth embodiment of the present disclosure provides a pressure generator 30d. The difference between the pressure generator 30d of the fourth embodiment and the pressure generator 30c of the third embodiment is that a structure of the vent plug <NUM>' is different from that of the vent plug <NUM>. The vent plug <NUM>' includes a main part <NUM>' arranged on the side of the free end <NUM> of the movable member <NUM>' away from the first opening <NUM> and at least one surrounding wall <NUM> extending away from the main part <NUM>'. The main part <NUM>' defines at least one through hole <NUM>' corresponding to the at least one exhaust hole <NUM>. The through holes <NUM>' is configured to communicate with the at least one exhaust hole <NUM>. The at least one surrounding wall <NUM> is configured to surround the at least one through hole <NUM>' respectively, and extend toward the second chamber <NUM>. Each of the at least one surrounding wall <NUM> defines an air channel <NUM> communicating with a corresponding through hole <NUM>'. The surrounding wall <NUM> is made of elastic material and configured to be deformed to open or close (or substantially close) the air channel <NUM>.

When the movable member <NUM>" moves away from the first opening <NUM>, the volume of the first chamber <NUM> is increased to decrease the air pressure in the first chamber <NUM> (a difference between the air pressure in the first chamber <NUM> and the air pressure in the second chamber <NUM> is not sufficient to prevent a deformation of the surrounding wall <NUM>), therefore, negative pressure is generated at the first opening <NUM> to generate a suction force applied on human body. At the same time, the surrounding wall <NUM> closes to block the communication between the first chamber <NUM> and the second chamber <NUM> under the negative pressure. With the volume of the first chamber <NUM> getting bigger, the negative pressure getting bigger, which forces the surrounding wall <NUM> to remain blocking the communication between the first chamber <NUM> and the second chamber <NUM>. Therefore, the first opening <NUM> remains at the suction state.

When the movable member <NUM>" moves toward the first opening <NUM>, the volume of the first chamber <NUM> is decreased to decrease the negative pressure. The moveable member <NUM> compresses air in the first chamber <NUM> to increase the air pressure in the first chamber <NUM>. When a difference between the air pressure in the first chamber <NUM> and the air pressure in the second chamber <NUM> (the air pressure in the first chamber <NUM> is greater than the air pressure in the second chamber <NUM>) is greater enough to make the surrounding wall <NUM> deform to open the air channel <NUM>, the at least one air channel <NUM> is communicated the first chamber <NUM> through the at least one through holes <NUM> and the at least one exhaust hole <NUM> with the second chamber <NUM>, therefore, air can be vented from the first chamber <NUM> to the second chamber <NUM> to reduce the movement resistance of the movable member <NUM>".

It should be understood that, the unidirectional exhaust structure of the present disclosure is not limited to the unidirectional exhaust structure <NUM> described in the third embodiment and the fourth embodiment. For example, the unidirectional exhaust structure <NUM> can be a one-way valve extending through the free end <NUM>. The vent plug <NUM>, <NUM>' described in the third embodiment and the fourth embodiment can be a flat plate structure made of rigid material, and the vent plug can be connected to the free end <NUM> through a spring. When the air pressure in the first chamber <NUM> is greater enough to make the spring deform to open the exhaust hole <NUM>. When the movable member <NUM> moves away from the first opening <NUM>, the volume of the first chamber <NUM> gets bigger to decrease the air pressure in the first chamber <NUM>, the vent plug <NUM> blocks the exhaust hole <NUM> to block the communication between the first chamber <NUM> and the second chamber <NUM>. Along with the volume of the first chamber <NUM> gets bigger, the negative pressure gets bigger, which forces the vent plug <NUM> to remain blocking the exhaust hole <NUM>.

The negative pressure generator with the unidirectional exhaust structure is not limited to the negative pressure generator shown in the third and fourth embodiments. Referring to <FIG>, the negative pressure generator with the unidirectional exhaust structure can further includes the massaging member <NUM> as shown in <FIG>. The massaging member <NUM> includes the connecting part <NUM> connected to a side of the free end <NUM> of the movable member <NUM> facing the first opening <NUM> and the massaging protrusions <NUM> extending away from the connecting part <NUM>. The massaging protrusions <NUM> is configured to be capable of at least partially extending out of the housing <NUM> through the first opening <NUM>. In order to make the first chamber <NUM> and the second chamber <NUM> communicate with each other, the connecting part <NUM> defines at least one air hole <NUM> communicating with the at least one exhaust hole <NUM>. Additionally, referring to <FIG>, the massaging member <NUM> can be integrally formed with the sealing ring <NUM> with an outer edge of the connecting part <NUM> connected with the sealing ring <NUM>.

It should be understood that, the driving device is not limited to the driving device <NUM> shown in the first to fourth embodiments. For example, the driving device can be an electromagnetic driver. The electromagnetic driver includes a first magnetic component and a second magnetic component connected to the transmission member. One of the first magnetic component and the second magnetic component is a coil, and the other one of the first magnetic component and the second magnetic component is a magnet. When the coil is energized, interaction force between the first magnetic component and the second magnetic component can drive the movable member to reciprocated move.

The magnet can be a permanent magnet or an electromagnet.

As shown in <FIG>, the present disclosure provides a massager <NUM>'. The massager <NUM>' is configured to massage a body of a user, especially to massage sensitive portions of the body. The massager <NUM>' may generate a negative pressure to massage and stimulate the sensitive portions.

The massager <NUM>' may include a support shell <NUM>, a pressure generator <NUM> arranged inside the support shell <NUM>, and a battery <NUM> arranged inside the support shell <NUM>. The battery <NUM> is configured to provide power to the pressure generator <NUM>. A flexible sleeve <NUM> may be arranged to sleeve an outside of the support shell <NUM>, and the flexible sleeve <NUM> is configured to contact the human body. The flexible sleeve <NUM> defines an adsorption port <NUM>, and a periphery of a wall of the adsorption port <NUM> is configured to contact a skin of the user. The support shell <NUM> defines a third opening <NUM> communicated to the adsorption port <NUM>. Periodic alternating positive and negative pressures generated by the pressure generator <NUM> may be conducted to the skin through the third opening <NUM> to stimulate the skin and achieve a massaging effect.

As shown in <FIG>, a fifth embodiment of the present disclosure provides a pressure generator 30e. The pressure generator 30e includes a housing <NUM> defining a receiving space <NUM>, a movable member <NUM> movably extending into the receiving space <NUM>, and a driving device <NUM>. The driving device <NUM> is configured to drive the movable member <NUM> to move along the receiving space <NUM> reciprocally and linearly. The housing <NUM> defines a first opening <NUM> communicated to the receiving space <NUM>. A gap <NUM> is defined between the movable member <NUM> and an inner wall of the housing <NUM>.

In detail, the movable member <NUM> includes a free end <NUM> and a driving end <NUM>. A cavity <NUM> is defined in the free end <NUM>. The free end <NUM> includes a bottom wall <NUM> connected to the driving end <NUM> and a side wall <NUM> extending from the bottom wall <NUM> toward the first opening <NUM>. The bottom wall <NUM> and the side wall <NUM> cooperatively define the cavity <NUM>. The cavity <NUM> is communicated to the receiving space <NUM>. The cavity <NUM> allows a volume of the receiving space <NUM> to be increased so that the pressure generator 30e has a large pressure variation range and a large pressure variation space. At the same time, the cavity <NUM> may increase a contact area between the movable member <NUM> and air in the receiving space <NUM>, such that the movable member <NUM> may be subjected to a uniform force while moving, and the movable member <NUM> may move stably. The driving end <NUM> includes a transmitting element (not labelled) extended along the moving direction of the moveably member <NUM>.

The free end <NUM> further includes a sleeve ring <NUM> sleeving the side wall <NUM>. The sleeve ring <NUM> is made of a metal, preferably made of aluminum alloy and the like. In the present embodiment, the gap <NUM> is defined between the sleeve ring <NUM> and the inner wall of the housing <NUM>. As desired, an outer diameter of the bottom wall <NUM> is greater than an outer diameter of the side wall <NUM>, thereby forming a limiting stage (not labelled) to position the sleeve ring <NUM>. In the present embodiment, the movable member <NUM> includes a piston.

In the present embodiment, the pressure generator 30e further includes a protective sleeve <NUM>. The protective sleeve <NUM> is made of a cushioning material and sleeved an outside of the housing <NUM>. The protective sleeve <NUM> defines a third opening <NUM> communicated to the first opening <NUM>. The protective sleeve <NUM> is made of a cushioning material, such as silicone and the like. As shown in <FIG>, the protective sleeve <NUM> is disposed between the support shell <NUM> and the housing <NUM>. By arranging the protective sleeve <NUM>, transmission of vibration to the outside may be reduced, and on the other hand, transmission of noise, which is generated due to the movable member <NUM> moving while the movable member <NUM> contacts the housing <NUM>, to the outside may be reduced, such that noise may be reduced.

Only when the gap <NUM> is not greater than <NUM>, a dynamic pressure may be generated at the third opening <NUM> and the first opening <NUM>, i.e., the negative pressure may be generated at the third opening <NUM> and the first opening <NUM>. By defining the gap <NUM> to be smaller, a larger noise may be prevented while using the massager <NUM>', achieving a noise reduction. In use, the driving device <NUM> may be arranged to allow the movable member <NUM> (such as a piston) to move along a length direction in the housing <NUM> reciprocally. When the adsorption port <NUM> of the massager <NUM>' is attached to the skin, the third opening <NUM> is covered. The movable member <NUM> moving reciprocally may change a volume of the receiving space <NUM> defined by the housing <NUM>. In this way, an internal air pressure is dynamically changed, even when the receiving space defined by the housing <NUM> generates the alternating positive and negative pressures. Preferably, the gap <NUM> is not greater than <NUM>.

In the present embodiment, as shown in <FIG>, a block <NUM> is arranged at each of two ends of the protective sleeve <NUM>, and the block <NUM> is extended toward the receiving space <NUM>. Two blocks <NUM> define a receiving cavity of the housing <NUM>. The outside of the housing <NUM> is sleeved by the protective sleeve <NUM> for wrapping, which can further reduce noise. The block <NUM> may be a convex block, and a plurality of blocks <NUM> may be spaced apart from each other and disposed between the two ends of the protective sleeve <NUM>. Alternatively, the block <NUM> may be a ring-shaped wall, and two blocks <NUM> may be disposed at the two ends of the protective sleeve <NUM> respectively.

As shown in <FIG>, the protective sleeve <NUM> and the housing <NUM> may be spaced apart from each other to define a sound insulation space <NUM>. The sound insulation space <NUM> prevents the noise, which is generated by the reciprocating movement of the movable member <NUM>, from transmitting to the outside, thus further reducing the noise. As needed, the sound insulation space <NUM> may preferably be a vacuum, which has a better effect to reduce the noise.

The driving device <NUM> includes a transmission assembly <NUM> and a motor <NUM>. The transmission assembly <NUM> includes an eccentric member <NUM> arranged on a shaft of the motor <NUM> and a connecting rod <NUM>. The eccentric member <NUM> is movably connected to the driving end <NUM> through the connecting rod <NUM>. A bearing <NUM> may be disposed between the connecting rod <NUM> and the driving end <NUM>, and another bearing <NUM> may be disposed between the connecting rod <NUM> and the eccentric member <NUM>. The bearing <NUM> is fixed to the eccentric member <NUM> through a screw <NUM> to allow the connecting rod <NUM> and the eccentric part <NUM> to rotate stably. The another bearing <NUM> is fixed to a fixed protrusion on the driving end <NUM> through another screw <NUM> to allow the connecting rod <NUM> and the driving end <NUM> to rotate stably.

Another embodiment of the present disclosure further provides a pressure generator 30f. Referring to <FIG>, the pressure generator 30f differs from the pressure generator 30e in the above embodiment only in that: the sleeve ring <NUM> and the side wall <NUM> of the movable member <NUM> are configured as a one-piece structure. The one-piece structure is plastic. Preferably, the sleeve ring <NUM> and the side wall <NUM> are formed as one piece by injection molding. Other structures of the pressure generator 30f are the same as those in the fifth embodiment, and will not be repeated.

As shown in <FIG> and <FIG>, a pressure generator <NUM> in the Embodiment VII differs from the pressure generator 30e in the Embodiment V in the following aspects.

As shown in <FIG>, the free end <NUM> may be in a shape of a flat plate.

In the present embodiment, the pressure generator <NUM> further includes an absorbing member <NUM> connected to the housing <NUM>. An end of the absorbing member <NUM> defines an adsorbing port <NUM>. The adsorbing port <NUM> is communicated to the first opening <NUM>. The periodic alternating positive and negative pressures may also be generated at the adsorbing port <NUM>.

In the present embodiment, the absorbing member <NUM> is integrally formed with the housing <NUM>. It shall be understood that, in other embodiments, the absorbing member <NUM> and the housing <NUM> may be connected by glue or the like. When the absorbing member <NUM> is arranged in the massager <NUM>', the absorbing member <NUM> may be integrally formed or separately formed with the flexible sleeve <NUM>.

The housing <NUM> includes a first cavity wall <NUM> and a second cavity wall <NUM>. The first cavity wall <NUM> is extended in the moving direction of the movable member <NUM> and enclosed to define the first opening <NUM>. The second cavity wall <NUM> is disposed at an end of the first cavity wall <NUM> away from the first opening <NUM>. The gap <NUM> is defined between the movable member <NUM> and the first cavity wall <NUM>. The second cavity wall <NUM> is movably extended through the driving end <NUM>. The driving end <NUM> is connected to the movable member <NUM> and the driving device <NUM>, such that the driving device <NUM> may drive the driving end <NUM> to further drive the movable member <NUM> to reciprocally move within the housing <NUM>.

In the present embodiment, the second cavity wall <NUM> defines a leaking hole <NUM>. The leaking hole <NUM> is extended through the second cavity wall <NUM> along the moving direction of the movable member <NUM>.

The driving device <NUM> includes a transmission assembly <NUM> and a motor <NUM>. The motor <NUM> is connected to the driving end <NUM> through the transmission assembly <NUM>. The transmission assembly <NUM> may be any one of an eccentric transmission structure, a cam, and a rolling ball screw.

In the present embodiment, the transmission assembly <NUM> is the eccentric transmission structure. The transmission assembly <NUM> includes an eccentric member <NUM> and a connecting rod <NUM> that are transmittably connected to each other. The eccentric member <NUM> is connected to the motor <NUM>, and the connecting rod <NUM> is connected to the driving end <NUM>.

When the pressure generator is operating, the adsorbing port <NUM> is placed at a part of the body that needs massage. The motor <NUM> is configured to drive the movable member <NUM> to reciprocally move in the housing <NUM> by driving the eccentric member <NUM>, the connecting rod <NUM> and the driving end <NUM> successively. In this way, the periodic alternating positive and negative pressures may be generated at the adsorbing port <NUM>, achieving the effect of adsorption and relief.

As shown in <FIG>, a difference between a pressure generator <NUM> in the Embodiment VIII and the pressure generator <NUM> of the Embodiment VII includes following aspects.

In the fourth embodiment, a plurality of massaging protrusions <NUM> may be arranged on a side of the movable member <NUM> facing the first opening <NUM>. While the movable member <NUM> is moving reciprocally towards the first opening <NUM>, the plurality of massaging protrusions <NUM> may at least partially protrude out of the adsorbing port <NUM>. In detail, when the movable member <NUM> moves towards the first opening <NUM> to reach a position closest to the first opening <NUM>, the plurality of massaging protrusions <NUM> may at least partially protrude out of the adsorbing port <NUM>. In this way, the plurality of massaging protrusions <NUM> may massage the body.

Claim 1:
A massager (<NUM>), comprising:
a flexible sleeve (<NUM>), defining an adsorption port (<NUM>);
a support shell (<NUM>), defining an opening (<NUM>);
a pressure generator (<NUM>), mounted in the support shell (<NUM>), the pressure generator (<NUM>) comprises a housing (<NUM>) with an opening (<NUM>) communicated to the opening (<NUM>) of the support shell and a receiving space (<NUM>), and a movable member (<NUM>) movably inserted into the receiving space (<NUM>), characterized in that, the pressure generator (<NUM>) further comprises:
a driving device (<NUM>), comprising a motor (<NUM>), a transmission assembly having an eccentric transmission structure including an eccentric member (<NUM>) and a connecting rod (<NUM>), the eccentric member (<NUM>) connected with the motor (<NUM>), and the connecting rod (<NUM>) connected between the eccentric member (<NUM>) and the movable member (<NUM>);
the flexible sleeve (<NUM>) is configured to sleeve around the housing (<NUM>), the adsorption port (<NUM>) is arranged in front of the housing (<NUM>) and directly communicated with the opening (<NUM>) of the housing, and the motor (<NUM>) is configured to drive the movable member (<NUM>) to reciprocate inside the receiving space (<NUM>) without deformation, so as to periodically generate a negative pressure and a positive pressure at the adsorption port (<NUM>).