Patent Description:
This application relates to the field of terminal device technologies, and in particular, to a vibration motor and a terminal device with a vibration motor.

In a terminal device such as a mobile phone, a tablet, or a wearable device, vibration is usually generated by using a vibration motor, to implement functions such as an incoming call or SMS message reminder and a vibration tactile feedback. With the advance in science and technology, terminal devices gradually become thin. Especially, for a foldable phone, a thickness of the entire phone urgently needs to be reduced. Consequently, mounting space of a vibration motor in the terminal device is gradually reduced. However, because of a limitation of a condition of the vibration motor, thinning of the vibration motor causes vibration performance reduction. Therefore, a current thickness of the vibration motor becomes one of bottlenecks that impede further thinning of the terminal device. It can be learned that how to reduce a thickness of a terminal device (especially a foldable phone) without sacrificing performance of a vibration motor becomes a current design difficulty.

<CIT> discloses a mobile terminal that includes a case, a touch screen, a haptic module to generate vibration, a memory storing data, and a power supply unit. The haptic module is a linear vibration motor including a housing, a coil, a moving portion, first and second elastic members; the housing includes an inner space defined by top and bottom surfaces, and first to fourth side surfaces; the coil, moving portion, and first and second elastic members are in the housing; the first and third side surfaces are spaced apart from the moving portion; the moving portion includes a magnet, first and second insertion grooves; the first and second elastic members are coil springs, the first and second elastic members are between the moving portion and the first third side surfaces, respectively; and one end of each coil spring is located at the first and second insertion grooves of the moving portion.

<CIT> discloses electronic equipment, including an accommodating space with the first casing that is used for accepting a vibrating motor in the accommodating space, and a second casing having one open end, the open end of the second casing encircling a drive assembly of the motor. This electronic equipment effectively reduces the high space that the vibrating motor occupies, reducing the thickness of the electronic equipment.

Embodiments of this application provide a terminal device, to reduce a thickness of a terminal device without sacrificing performance of a vibration motor.

According to a first aspect, a terminal device as set out in appended claim <NUM> is provided.

In the terminal device provided in this application, the opening on the housing of the vibration motor is blocked by using the first middle frame, to form a closed housing, thereby achieving a waterproof and dustproof protection function to some extent. In addition, the first middle frame forms a wall plate of the housing of the vibration motor. Without changing a height of internal accommodation space of the vibration motor, a height of the vibration motor can be reduced, to reduce a mounting height of the vibration motor in the terminal device. This helps reduce a thickness of the terminal device. Because the height of the internal accommodation space of the vibration motor is unchanged, a design height of a structure such as a mass block in the housing does not need to be limited, so that performance of the vibration motor can be ensured.

The housing includes a top wall and a side frame, the side frame is disposed around a circumference of the top wall, and an end that is of the side frame and that is away from the top wall surrounds the opening. The structure of the housing is simple, and the top wall and the side frame may be formed integrally by using a stamping process. In some other embodiments, the top wall and the side frame may be formed separately and assembled together. This can facilitate assembly of an internal structure.

The vibration motor further includes a mass block. The mass block is disposed in the housing, and the mass block can reciprocally vibrate relative to the housing on a plane parallel to a plane on which the opening is located. Specifically, on the plane parallel to the plane on which the opening is located, a vibration path of the mass block may be a straight line, or may be a curve. A vibration direction of the mass block is perpendicular to a thickness direction of the terminal device. This helps reduce a thickness of the vibration motor, and helps reduce a mounting height of the vibration motor in the terminal device.

In a possible implementation of the first aspect, an elastic assembly is configured to elastically support the mass block in the housing, and the elastic assembly allows the mass block to vibrate reciprocally in the housing. In this way, vibration stability of the mass block can be ensured.

In a possible implementation of the first aspect, the elastic assembly includes a first elastic member and a second elastic member. Both the first elastic member and the second elastic member are springs. An arrangement direction of the first elastic member, the mass block, and the second elastic member is parallel to the vibration direction of the mass block. The first elastic member includes a first fastening part, a first connection part, and a second fastening part that are connected in sequence. The first fastening part is connected to the mass block, and a connection manner includes but is not limited to welding, sticking, or integral molding. The second fastening part is connected to the side frame of the housing, and a connection manner includes but is not limited to welding, sticking, or integral molding. The first connection part is approximately of an n shape, an arch direction of the first connection part is parallel to the plane on which the opening is located, and the arch direction of the first connection part is perpendicular to the vibration direction of the mass block. The second elastic member includes a third fastening part, a second connection part, and a fourth fastening part that are connected in sequence. The third fastening part is connected to the mass block, and a connection manner includes but is not limited to welding or sticking. The fourth fastening part is connected to the side frame of the housing, and a connection manner includes but is not limited to welding or sticking. The second connection part is approximately of an n shape, and an arch direction of the second connection part is opposite to the arch direction of the first connection part. In this way, both the first elastic member and the second elastic member have a capability of deforming in a direction parallel to the vibration direction of the mass block. This structure is simple and easy to implement.

The vibration motor further includes a drive assembly. The drive assembly includes a magnet assembly and a coil. The magnet assembly is fastened to the mass block, the coil is located between the mass block and the top wall, the coil is fastened to the top wall of the housing, the magnet assembly cooperates with the coil to generate a Lorentz force, and the Lorentz force is used to drive the mass block to reciprocally vibrate relative to the housing on the plane parallel to the plane on which the opening is located. A structure of the drive assembly is simple, and the magnet assembly may alternatively participate in vibration as a part of the mass block. In addition, because the coil is fastened to the top wall of the housing, a layout is proper, and a support structure of the coil does not need to be additionally disposed. This helps reduce a height of the vibration motor.

In a possible implementation of the first aspect, the vibration motor further includes an electrical connection structure. The electrical connection structure includes a first segment, a second segment, and a third segment that are sequentially connected. The first segment is fastened to an inner surface of the top wall, the coil is fastened to the first segment and electrically connected to the first segment, the second segment is fastened to an inner surface of the side frame, the third segment extends in a radial direction of the opening, a part of the third segment is located outside the housing, and a positive terminal and a negative terminal are disposed on the part that is of the third segment and that is located outside the housing. The electrical connection structure can lead an electrode of the coil to the third segment outside the housing, and when the vibration motor is used in the terminal device, the third segment of the electrical connection structure can be fastened and supported by using the first middle frame. That is, when the vibration motor is used in the terminal device, the third segment of the electrical connection structure is attached to and fastened to the first middle frame. Therefore, the third segment is fastened and supported by using the first middle frame.

In a possible implementation of the first aspect, the electrical connection structure is a flexible circuit board.

In a possible implementation of the first aspect, a connection lug is disposed on an outer surface of the side frame, and the edge of the housing at the opening is fastened to the first middle frame by using the connection lug. Stability and reliability of this connection manner are relatively high, and neither of a limiting structure and a buffer material layer needs to be disposed on a side that is of the housing and that is away from the first middle frame, so that a mounting height of the vibration motor on the first middle frame can be reduced to some extent. In addition, a region occupied by the connection lug is relatively small, and space is reserved on a side that is of the lug and that is away from the first middle frame, so that other parts around the vibration motor can be accommodated.

In a possible implementation of the first aspect, the connection lug includes a fastening part, a lug part, and a connection hole, the fastening part is fastened to the outer surface of the side frame, the lug part is fastened to the fastening part, the connection hole is disposed in the lug part, and an axial direction of the connection hole is consistent with an extension direction of a central axis of the opening. This structure is simple, and can implement a detachable connection between the edge of the housing at the opening and the first middle frame, to facilitate repair and replacement.

In a possible implementation of the first aspect, the edge of the housing at the opening is welded to the first middle frame. Stability of welding is relatively high, so that connection stability of the vibration motor on the first middle frame can be improved. In addition, neither of a limiting structure and a buffer material layer needs to be disposed on a side that is of the housing and that is away from the first middle frame, so that a mounting height of the vibration motor on the first middle frame can be reduced to some extent.

In a possible implementation of the first aspect, the first screen includes a first part and a second part, and the first part of the first screen is located on one side of the first middle frame and is stacked with the first middle frame. The terminal device further includes a second middle frame, where the second middle frame is rotatably connected to the first middle frame, the second part is disposed on one side of the second middle frame and is stacked with the second middle frame, the terminal device can change between an unfolded state and a folded state, and when the terminal device is in the unfolded state, the first part of the first screen and the second part of the first screen face a same side, or when the terminal device is in the folded state, the first part of the first screen and the second part of the first screen face each other or back onto each other. In this way, the terminal device is a foldable terminal device, and a wall plate of the housing of the vibration motor is formed by using the first middle frame. Without changing a height of internal accommodation space of the vibration motor, a height of the vibration motor can be reduced. This helps reduce a thickness of the foldable terminal device, to improve a hand feeling, a texture, and portability of the foldable terminal.

In a possible implementation of the first aspect, when the terminal device is in the folded state, the first part of the first screen and the second part of the first screen face each other. The terminal device further includes a second screen, where the second screen is located on a side that is of the vibration motor and that is away from the first middle frame, the second screen and the first middle frame are relatively fastened, and the vibration motor and the second screen are spaced from each other. In this way, the terminal device is an inward-foldable terminal having two screens, and a wall plate of the housing of the vibration motor is formed by using the first middle frame. Without changing a height of internal accommodation space of the vibration motor, a height of the vibration motor can be reduced. This helps reduce a thickness of the foldable terminal device, to improve a hand feeling, a texture, and portability of the foldable terminal.

In a possible implementation of the first aspect, a gap between the vibration motor and the second screen is <NUM> millimeters to <NUM> millimeters. In some embodiments, a width of the gap is <NUM> millimeters to <NUM> millimeters. The gap width is suitable, so that a thickness of the foldable terminal can be reduced while preventing the vibration motor from impacting on the second screen.

In a possible implementation of the first aspect, a height of the vibration motor is less than or equal to <NUM> millimeters. In this way, the height of the vibration motor is relatively small. This facilitates a thinning design of the terminal device.

There may be one or more vibration motors disposed in the terminal device. When the terminal device is a foldable terminal device, a plurality of vibration motors may all be disposed in first accommodation space of the terminal device or may all be disposed in second accommodation space of the terminal device, or some vibration motors may be disposed in the first accommodation space and the other vibration motors may be disposed in the second accommodation space. When some of a plurality of vibration motors are disposed in the first accommodation space and the other vibration motors are disposed in the second accommodation space, a disposing position of the vibration motors in the first accommodation space and a disposing position of the vibration motors in the second accommodation space may be symmetrical with respect to a rotation axis of a rotation mechanism.

In embodiments of this application, the terms "first" and "second" are merely used for description, but should not be understood as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, a feature limited by "first" or "second" may explicitly or implicitly include one or more features.

In embodiments of this application, the term "include", "have", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements that are not explicitly listed, or includes elements inherent to such a process, method, article, or apparatus. In a case without more restrictions, for an element limited by the statement "include a. ", a process, method, article, or apparatus that includes the element may further include another same element.

In embodiments of this application, position relationship qualifiers such as the terms "parallel", "perpendicular", "consistent", and "opposite" all indicate approximate positions that allow a specific error.

This application provides a terminal device, and the terminal device has a display interface and can display a video or an image. In addition, a vibration motor is disposed in the terminal device, and can vibrate to implement functions such as an incoming call, message, SMS message, weather, or news reminder and a tactile feedback of a touch or an accidental touch. To overcome a technical bottleneck that a vibration motor limits further thinning of a terminal device, in this application, a middle frame in the terminal device is used to form a wall plate of a housing of the vibration motor, to reduce a mounting height of the vibration motor in the terminal device while ensuring internal accommodation space of the vibration motor, so as to reduce a thickness of the terminal device. Because the improvement solution in this application can ensure the internal accommodation space of the vibration motor, a design volume of a structure such as a mass block in the housing does not need to be limited, so that performance of the vibration motor can be ensured. It may be understood that the thickness of the terminal device refers to a size of the terminal device in a direction perpendicular to the display interface.

The terminal device provided in this application includes but is not limited to a tablet terminal and a foldable terminal. The tablet terminal includes but is not limited to a tablet phone, a tablet personal computer (tablet personal computer), a tablet laptop computer (laptop computer), a tablet personal digital assistant (personal digital assistant, PDA), a tablet in-vehicle device, a tablet wearable device, or the like. The foldable terminal includes but is not limited to a foldable phone or a foldable computer.

The following separately uses a tablet phone and a foldable phone as examples to analyze a thinning requirement for the terminal device, and describes how a vibration motor impedes thinning of the terminal device in this requirement.

<FIG> is a schematic diagram of a structure of a terminal device according to some embodiments of this application. <FIG> is a schematic diagram of a cross-sectional structure of the terminal device in <FIG> on a line A-A. In this embodiment, the terminal device is a tablet phone <NUM>. The tablet phone <NUM> includes a first screen <NUM>, a first middle frame <NUM>, a first back cover <NUM>, and a vibration motor <NUM>. The first screen <NUM> is located on one side of the first middle frame <NUM> and is stacked with the first middle frame <NUM>. The first back cover <NUM> is located on a side that is of the first middle frame <NUM> and that is away from the first screen <NUM>, and is stacked with the first middle frame <NUM>. First accommodation space C1 is formed between the first back cover <NUM> and the first middle frame <NUM>. The vibration motor <NUM> is located in the first accommodation space C1, and the vibration motor <NUM> is fastened to the first middle frame <NUM>. Specifically, the vibration motor <NUM> may be glued to the first middle frame <NUM>, or may be fastened to the first middle frame <NUM> in a manner such as clamping or threaded connection.

To ensure a hand feeling, a texture, and portability of the tablet phone <NUM>, a thickness of the tablet phone <NUM> needs to be reduced. On a premise that thicknesses of the first screen <NUM>, the first middle frame <NUM>, and the first back cover <NUM> are fixed, a mounting height h of the vibration motor <NUM> on the first middle frame <NUM> is one of bottlenecks that impede further thinning of the tablet phone <NUM>. The mounting height h of the vibration motor <NUM> on the first middle frame <NUM> is a height by which an entirety including the vibration motor <NUM> and a connection structure protrudes from the first middle frame <NUM>. The connection structure is a structure for connecting the vibration motor <NUM> to the first middle frame <NUM>.

<FIG> is a schematic diagram of a structure of a terminal device according to some other embodiments of this application. <FIG> is a schematic diagram of a cross-sectional structure of the terminal device in <FIG> on a line B-B. In this embodiment, the terminal device is a foldable phone <NUM>. In addition to the first screen <NUM>, the first middle frame <NUM>, the first back cover <NUM>, and the vibration motor <NUM>, the foldable phone <NUM> further includes a second middle frame <NUM> and a second back cover <NUM>.

The first middle frame <NUM> is rotatably connected to the second middle frame <NUM>. Specifically, referring to <FIG>, the first middle frame <NUM> and the second middle frame <NUM> may be rotatably connected by using a rotation mechanism <NUM>. There are a plurality of structural forms of the rotation mechanism <NUM>, provided that a rotatable connection between the first middle frame <NUM> and the second middle frame <NUM> can be implemented. This is not limited in this application, and details are not described.

The first screen <NUM> may be folded into a first part 101a (that is, a screen A) and a second part 101b (that is, a screen B). A folding axis is formed between the first part 101a and the second part 101b. To enable the first screen <NUM> to be folded into the first part 101a and the second part 101b, at least a region in which the folding axis is located on the first screen <NUM> is made of a flexible material. A remaining region on the first screen <NUM> may be made of a flexible material, or may be made of a rigid material, or may be partially made of a rigid material and partially made of a flexible material. This is not specifically limited herein. In some embodiments, the entire first screen <NUM> is made of a flexible material. In this way, manufacturing is convenient and costs are relatively low. However, a screen made of the flexible material is easily scratched.

The first part 101a is located on one side of the first middle frame <NUM> and is stacked with the first middle frame <NUM>. The second part 101b is located on one side of the second middle frame <NUM> and is stacked with the second middle frame <NUM>.

The second back cover <NUM> is located on a side that is of the second middle frame <NUM> and that is away from the second part 101b, and is stacked with the second middle frame <NUM>. Second accommodation space C2 is formed between the first back cover <NUM> and the second middle frame <NUM>. The second accommodation space C2 is configured to accommodate structures such as a battery, a main board, and a camera module.

The foldable phone <NUM> can change between an unfolded state and a folded state. The foldable phone <NUM> may be classified into two types based on folding directions from the unfolded state to the folded state. One type is a foldable phone that is folded inward (briefly referred to as an inward-foldable phone below), and the other type is a foldable phone that is folded outward (briefly referred to as an outward-foldable phone below). When the inward-foldable phone is in a folded state, the first part 101a and the second part 101b face each other. When the outward-foldable phone is in a folded state, the first part 101a and the second part 101b back onto each other.

<FIG> is a schematic diagram of a structure of an inward-foldable phone <NUM> during folding from an unfolded state to a folded state according to some embodiments of this application. Specifically, (a) in <FIG> is a schematic diagram of a structure of the inward-foldable phone in the unfolded state. In this state, the first part 101a (that is, the screen A) and the second part 101b (that is, the screen B) face or approximately face a same side. In addition, in this state, an included angle θ between the first part 101a and the second part 101b is <NUM>° or approximately <NUM>°, so that large-screen display can be implemented, to provide more abundant information for a user and bring better use experience to the user.

It should be noted that in descriptions of the foregoing embodiments and the following embodiments, the included angle θ between the first part 101a and the second part 101b is an included angle between the first part 101a and the second part 101b on a display side of the first screen <NUM>. The display side of the first screen <NUM> is a side on which the first screen <NUM> displays an image or a video. When the user is on the display side of the first screen <NUM>, the user can view an image or a video displayed on the first screen <NUM>.

A schematic diagram of a structure of the inward-foldable phone <NUM> in a half-folded state shown in (b) in <FIG> may be formed by folding two sides of the inward-foldable phone <NUM> in a direction a11 and a direction a12. In this state, the included angle θ between the first part 101a and the second part 101b is greater than <NUM>° and less than <NUM>°. Based on this, further, a schematic diagram of a structure of the inward-foldable phone <NUM> in the folded state shown in (c) in <FIG> may be formed by continuing to fold two sides of the inward-foldable phone <NUM> in a direction a13 and a direction a14. In this state, the foldable phone <NUM> is completely folded, and the first part 101a and the second part 101b face each other, that is, the included angle θ between the first part 101a and the second part 101b is <NUM>° or approximately <NUM>°. In this state, the first screen <NUM> is invisible to the user. This can prevent the first screen <NUM> from being scratched by a hard object.

<FIG> is a schematic diagram of a structure of an outward-foldable phone <NUM> during folding from an unfolded state to a folded state according to some embodiments of this application. Specifically, (a) in <FIG> is a schematic diagram of a structure of the outward-foldable phone <NUM> in the unfolded state. In this state, the first part 101a (that is, the screen A) and the second part 101b (that is, the screen B) face or approximately face a same side. In addition, in this state, an included angle θ between the first part 101a and the second part 101b is <NUM>° or approximately <NUM>°, so that large-screen display can be implemented, to provide more abundant information for a user and bring better use experience to the user. A schematic diagram of a structure of the outward-foldable phone in a half-folded state shown in (b) in <FIG> may be formed by folding two sides of the outward-foldable phone <NUM> in a direction a21 and a direction a22. In this state, the included angle θ between the first part 101a and the second part 101b is greater than <NUM>° and less than <NUM>°. Based on this, further, a schematic diagram of a structure of the outward-foldable phone <NUM> in the folded state shown in (c) in <FIG> may be formed by continuing to fold two sides of the outward-foldable phone <NUM> in a direction a23 and a direction a24. In this state, the foldable phone <NUM> is completely folded, and the first part 101a and the second part 101b back onto each other, that is, the included angle θ between the first part 101a and the second part 101b is <NUM>° or approximately <NUM>°. In this state, a volume of the foldable phone is relatively small, and the foldable phone is easy to carry. In addition, small-screen display may be implemented by using one of the first part 101a and the second part 101b. However, because the first screen <NUM> is exposed to an external environment, the first screen <NUM> is prone to be scratched.

It should be noted that <FIG> all show foldable phones that are folded horizontally. Certainly, the foldable phone in embodiments of this application may alternatively be a foldable phone that is folded vertically. This is not specifically limited herein. In addition, the foldable phone may not be the inward-foldable phone or the outward-foldable phone, but a foldable phone that supports both inward folding and outward folding.

Because a thickness of the foldable phone (including the inward-foldable phone <NUM>, the outward-foldable phone <NUM>, and the foldable phone that supports both inward folding and outward folding) in the folded state is a sum of thicknesses of two folding parts, the thickness of the foldable phone in the folded state is approximately twice the thickness of the tablet phone <NUM> shown in <FIG> and <FIG>. Therefore, the foldable phone <NUM> urgently needs to be thinned to improve a hand feeling, a texture, and portability. Therefore, compared with the tablet phone <NUM>, the foldable phone <NUM> more needs to be thinned by reducing the mounting height of the vibration motor <NUM> on the first middle frame <NUM>.

<FIG> is a schematic diagram of a cross-sectional structure of a foldable phone <NUM> according to some other embodiments of this application. In addition to the first screen <NUM>, the first middle frame <NUM>, the vibration motor <NUM>, the second middle frame <NUM>, and the second back cover <NUM>, the foldable phone <NUM> further includes a second screen <NUM>. The second screen <NUM> is located on a side that is of the first middle frame <NUM> and that is away from the first screen <NUM>, and is stacked with the first middle frame <NUM>. First accommodation space C1 is formed between the second screen <NUM> and the first middle frame <NUM>. The vibration motor <NUM> is located in the first accommodation space C1, and the vibration motor <NUM> is fastened to the first middle frame <NUM>.

<FIG> is a schematic diagram of a structure of the foldable phone <NUM> in <FIG> during folding from an unfolded state to a folded state. Specifically, (a) in <FIG> is a schematic diagram of a structure of the foldable phone <NUM> in the unfolded state. In this state, the first part 101a (that is, the screen A) and the second part 101b (that is, the screen B) face or approximately face a same side. In addition, in this state, an included angle θ between the first part 101a and the second part 101b is <NUM>° or approximately <NUM>°, so that large-screen display can be implemented, to provide more abundant information for a user and bring better use experience to the user. A schematic diagram of a structure of the foldable phone <NUM> in a half-folded state shown in (b) in <FIG> may be formed by folding two sides of the foldable phone <NUM> in a direction a31 and a direction a32. In this state, the included angle θ between the first part 101a and the second part 101b is greater than <NUM>° and less than <NUM>°. Based on this, further, a schematic diagram of a structure of the foldable phone <NUM> in the folded state shown in (c) in <FIG> may be formed by continuing to fold two sides of the foldable phone <NUM> in a direction a33 and a direction a34. In this state, the foldable phone <NUM> is completely folded, and the first part 101a and the second part 101b face each other, that is, the included angle θ between the first part 101a and the second part 101b is <NUM>° or approximately <NUM>°. In this state, the first screen <NUM> is invisible to the user, so that the first screen <NUM> can be prevented from being scratched by a hard object. In addition, the second screen <NUM> (that is, a screen C) is exposed, so that small-screen display can be implemented by using the second screen <NUM>.

In the foregoing embodiment, the second screen <NUM> has scratch resistance performance, to reduce a possibility that the second screen <NUM> is scratched during small-screen display. For example, referring back to <FIG>, the second screen <NUM> includes a transparent cover plate <NUM> and a display <NUM> (English name: panel, also referred to as a display panel). The transparent cover plate <NUM> is stacked with the display <NUM>. The display <NUM> may be a flexible display or a rigid display. For example, the display <NUM> may be an organic light-emitting diode (organic light-emitting diode, OLED) display, an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED) display, a mini light-emitting diode (mini organic light-emitting diode) display, a micro light-emitting diode (micro organic light-emitting diode) display, a micro organic light-emitting diode (micro organic light-emitting diode) display, a quantum dot light-emitting diode (quantum dot light-emitting diodes, QLED) display, or a liquid crystal display (liquid crystal display, LCD). The transparent cover plate <NUM> is mainly configured to protect the display <NUM> and prevent dust, thereby reducing a possibility that the second screen <NUM> is scratched. A material of the transparent cover plate <NUM> includes but is not limited to glass.

It may be understood that, on the premise that scratch resistance performance of the second screen <NUM> is ensured, the second screen <NUM> may alternatively use another structural form.

On the premise that scratch resistance performance of the second screen <NUM> is ensured, a thickness of the second screen <NUM> is usually large. The thickness of the second screen <NUM> with scratch resistance performance is usually greater than a thickness of the back cover. Specifically, compared with the foldable phone <NUM> shown in <FIG>, the foldable phone <NUM> shown in <FIG> is provided with the second screen <NUM>, and the thickness of the second screen <NUM> is greater than the thickness of the first back cover <NUM> of the foldable phone <NUM> shown in <FIG>. Therefore, the thickness of the foldable phone <NUM> in <FIG> in the folded state is greater than the thickness of the foldable phone <NUM> in <FIG> in the folded state. Therefore, the foldable phone <NUM> shown in <FIG> more urgently needs to be thinned to improve a hand feeling, a texture, and portability. Therefore, compared with the foldable phone <NUM> shown in <FIG>, the foldable phone <NUM> shown in <FIG> more needs to be thinned by reducing the mounting height of the vibration motor <NUM> on the first middle frame <NUM>.

It may be learned from the foregoing description that the mounting height of the vibration motor <NUM> on the first middle frame <NUM> is one of the bottlenecks that impede thinning of the tablet phone and the foldable phone (especially the foldable phone with the first screen <NUM> and the second screen <NUM>). <FIG> is a schematic diagram of an assembly structure between the vibration motor <NUM> and both the first middle frame <NUM> and the second screen <NUM> in the foldable phone <NUM> shown in <FIG>. The vibration motor <NUM> includes a housing <NUM>, the housing <NUM> is a closed housing, and a mass block of the vibration motor <NUM> is disposed in the housing <NUM>. The housing <NUM> is sticked to the first middle frame <NUM> by using an adhesive <NUM>. Based on this, to ensure connection stability of the housing <NUM> on the first middle frame <NUM>, a limiting structure <NUM> is further disposed on a side that is of the housing <NUM> and that is away from the first middle frame <NUM>. The limiting structure <NUM> is fixedly connected to the first middle frame <NUM>. The limiting structure <NUM> is configured to prevent the housing <NUM> from moving in a direction away from the first middle frame <NUM>. Based on this, to avoid falling off or damage of the second screen <NUM> caused when the vibration motor <NUM> impacts on the second screen <NUM> during vibration, a buffer material layer <NUM> is further disposed between the limiting structure <NUM> and the second screen <NUM>. The buffer material layer <NUM> includes but is not limited to foam and rubber. In this embodiment, the mounting height h of the vibration motor <NUM> on the first middle frame <NUM> is a sum of the thickness of the adhesive <NUM>, the height of the vibration motor <NUM>, and the thickness of the limiting structure <NUM>, and the mounting height h is relatively large. This is not conducive to thinning of the entire phone.

To resolve the foregoing technical problem, a sinking groove may be disposed on a surface of the first middle frame <NUM>, and a part of the vibration motor <NUM> is accommodated in the sinking groove, to reduce the mounting height of the vibration motor <NUM> on the first middle frame <NUM>. However, with development of technologies, as one type of vibration motor <NUM>, a lateral linear motor is widely used in tablet terminal devices and foldable terminal devices. A length and a width of the lateral linear motor are usually large, and an occupation area on the first middle frame <NUM> is relatively large. If a sinking groove is disposed on the first middle frame <NUM> to reduce the mounting height of the vibration motor <NUM>, an area of the sinking groove region needs to be large to accommodate the lateral linear motor. However, an increase in the area of the sinking groove region leads to a great decrease in structural strength and reliability of the first middle frame <NUM>.

To ensure reliability of the first middle frame <NUM> and reduce the mounting height of the vibration motor <NUM> on the first middle frame <NUM>, refer to <FIG>. <FIG> is a three-dimensional view of the vibration motor <NUM> according to some embodiments of this application. <FIG> is a three-dimensional view of the vibration motor <NUM> in <FIG> from bottom to top. <FIG> is a schematic diagram of a cross-sectional structure of the vibration motor <NUM> in <FIG> on a line C-C. It should be noted that, in this embodiment, "line C-C" refers to a plane on which the line C-C and arrows at two ends of the line C-C are located. Descriptions of similar drawings below should be understood in a same manner, and details are not described below. The vibration motor <NUM> can be used in the terminal device in any one of the foregoing embodiments.

Specifically, the vibration motor <NUM> includes a housing <NUM>, and the housing <NUM> is configured to perform waterproof and dustproof protection on an internal structure of the vibration motor <NUM>. A material of the housing <NUM> is metal, for example, stainless steel. In this way, on the premise that structural strength is ensured, a thickness of the housing <NUM> may be designed to be relatively small, to help reduce a thickness and a volume of the vibration motor <NUM>. In some embodiments, the housing <NUM> is made of a metal material having magnetic shielding performance. In this way, the housing <NUM> can prevent a magnetic field inside the vibration motor <NUM> from affecting performance of an antenna located around the vibration motor <NUM> in the terminal device.

One end of the housing <NUM> is opened to form an opening 1a. In some embodiments, referring to <FIG>, the housing <NUM> includes a top wall <NUM> and a side frame <NUM>, and the side frame <NUM> is disposed around a circumference of the top wall <NUM>. Optionally, referring to <FIG>, the side frame <NUM> includes a first side wall 12a and a second side wall 12b that are disposed opposite each other, and a third side wall 12c and a fourth side wall 12d that are disposed opposite each other. The side frame <NUM> is formed by sequentially connecting the first side wall 12a, the third side wall 12c, the second side wall 12b, and the fourth side wall 12d. The opening 1a is surrounded by an end that is of the side frame <NUM> and that is away from the top wall <NUM>. Specifically, referring to <FIG>, the opening 1a is surrounded by an end that is of the first side wall 12a and that is away from the top wall <NUM>, an end that is of the second side wall 12b and that is away from the top wall <NUM>, an end that is of the third side wall 12c and that is away from the top wall <NUM>, and an end that is of the fourth side wall 12d and that is away from the top wall <NUM>. The structure of the housing is simple, and the top wall <NUM> and the side frame <NUM> may be formed integrally by using a stamping process. In some other embodiments, the top wall <NUM> and the side frame <NUM> may be formed separately and assembled together. This can facilitate assembly of an internal structure.

When the vibration motor <NUM> is used in the terminal device described in any one of the foregoing embodiments, the opening 1a is opposite the first middle frame <NUM>, and an edge of the housing <NUM> at the opening 1a is fastened to the first middle frame <NUM>.

In this way, when the vibration motor <NUM> is used in the terminal device, the opening 1a of the vibration motor <NUM> may be blocked by using the first middle frame <NUM>, to form a closed housing, thereby achieving a waterproof and dustproof protection function to some extent. In addition, the first middle frame <NUM> forms a wall plate of the housing <NUM> of the vibration motor <NUM>. Without changing a height of internal accommodation space of the vibration motor <NUM>, a height of the vibration motor <NUM> can be reduced, to reduce a mounting height of the vibration motor <NUM> in the terminal device. This helps reduce a thickness of the terminal device. Because the height of the internal accommodation space of the vibration motor <NUM> is unchanged, a design height of a structure such as a mass block in the housing <NUM> does not need to be limited, so that performance of the vibration motor <NUM> can be ensured.

There are a plurality of fastening manners between the edge of the housing <NUM> at the opening 1a and the first middle frame <NUM>.

For example, <FIG> is a schematic diagram of a relative position between the vibration motor <NUM> shown in <FIG> and both the first middle frame <NUM> and the second screen <NUM> when the vibration motor is used in the foldable phone <NUM> shown in <FIG>. In this embodiment, the edge of the housing <NUM> at the opening 1a is welded to the first middle frame <NUM>. A weld leg is located at an included angle between an outer surface of the edge of the housing at the opening 1a and the first middle frame <NUM>. Stability of welding is relatively high, so that connection stability of the vibration motor <NUM> on the first middle frame <NUM> can be improved. In addition, neither of a limiting structure and a buffer material layer needs to be disposed on a side that is of the housing <NUM> and that is away from the first middle frame <NUM>, so that a mounting height of the vibration motor <NUM> on the first middle frame <NUM> can be reduced to some extent.

For another example, refer to <FIG>. <FIG> is a three-dimensional view of the vibration motor <NUM> according to some other embodiments of this application. <FIG> is a three-dimensional view of the vibration motor <NUM> in <FIG> from bottom to top. <FIG> is a schematic diagram of a cross-sectional structure of the vibration motor <NUM> in <FIG> on a line D-D. In this embodiment, a connection lug <NUM> is disposed on an outer surface of the side frame <NUM> of the housing <NUM>. The edge of the housing <NUM> at the opening 1a is fastened to the first middle frame <NUM> by using the connection lug <NUM>. There is at least one connection lug <NUM>. Specifically, there may be one, two, three, four, or more connection lugs <NUM>. In the embodiments shown in <FIG>, there are two connection lugs <NUM>, and the two connection lugs <NUM> are respectively disposed on outer surfaces of two opposite side walls of the side frame <NUM>. Specifically, referring to <FIG>, the two connection lugs <NUM> are respectively disposed on an outer surface of the third side wall 12c and an outer surface of the fourth side wall 12d. In some other embodiments, the two connection lugs <NUM> may be disposed on an outer surface of the first side wall 12a and an outer surface of the second side wall 12b. Because the two connection lugs <NUM> have a same structure, the following uses only one of the connection lugs <NUM> as an example to describe a structure of the connection lug <NUM>. Specifically, referring to <FIG>, the connection lug <NUM> includes a fastening part <NUM>, a lug part <NUM>, and a connection hole <NUM>. The fastening part <NUM> is welded to the outer surface of the side frame <NUM>. In some other embodiments, the fastening part <NUM> may alternatively be sticked or clamped to the outer surface of the side frame <NUM>, or the fastening part <NUM> and the side frame <NUM> are an integral structure. The lug part <NUM> is fastened to the fastening part <NUM>. The lug part <NUM> and the fastening part <NUM> are an integral structure, that is, the lug part <NUM> and the fastening part <NUM> are an entire structure. In some other embodiments, the lug part <NUM> and the fastening part <NUM> may be formed separately and fastened together in a welding manner or the like. The connection hole <NUM> is disposed on the lug part <NUM>, and an axial direction of the connection hole <NUM> is consistent with an extension direction of a central axis (that is, an axis O in <FIG>) of the opening 1a. The central axis of the opening 1a is an axis that passes through the center of the opening 1a and is perpendicular to the plane on which the opening 1a is located. The structure of the connection lug <NUM> is simple, and can implement a detachable connection between the edge of the housing <NUM> at the opening 1a and the first middle frame <NUM>, to facilitate repair and replacement of the vibration motor <NUM>. It should be noted that, when the edge of the housing <NUM> at the opening 1a is fastened to the first middle frame <NUM>, the structure of the connection lug <NUM> may alternatively be another structure, for example, a buckle structure.

<FIG> is a schematic diagram of a relative position between the vibration motor <NUM> shown in <FIG> and both the first middle frame <NUM> and the second screen <NUM> when the vibration motor is used in the foldable phone <NUM> shown in <FIG>. In this embodiment, the edge of the housing <NUM> at the opening 1a is fastened to the first middle frame <NUM> by using two connection lugs <NUM>. Specifically, a connection member <NUM> penetrates the connection hole <NUM> of the connection lug <NUM>, to fasten the connection lug <NUM> to the first middle frame <NUM>. The connection member <NUM> includes but is not limited to a screw, a rivet, or a bolt. Stability and reliability of this connection manner are relatively high, and neither of a limiting structure and a buffer material layer needs to be disposed on a side that is of the housing <NUM> and that is away from the first middle frame <NUM>, so that a mounting height of the vibration motor <NUM> on the first middle frame <NUM> can be reduced to some extent. In addition, a region occupied by the connection lug <NUM> is relatively small, and space is reserved on a side that is of the lug part <NUM> and that is away from the first middle frame <NUM>, so that other parts around the vibration motor can be accommodated.

On the basis of the foregoing two examples, referring to <FIG> or <FIG>, the vibration motor <NUM> and the second screen <NUM> are spaced from each other, and a width d of a gap between the vibration motor <NUM> and the second screen <NUM> is greater than or equal to <NUM> millimeters (mm), and is less than or equal to <NUM>. In some embodiments, the width d of the gap is greater than or equal to <NUM>, and is less than or equal to <NUM>. Specifically, the width d of the gap may be <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, or the like. In this way, the thickness of the foldable phone <NUM> can be reduced while the vibration motor <NUM> is prevented from impacting on the second screen <NUM>. Similarly, when the vibration motor <NUM> is used in the tablet phone <NUM> shown in <FIG> or the foldable phone <NUM> shown in <FIG>, the vibration motor <NUM> and the first back cover <NUM> are also spaced from each other, and a width of a gap between the vibration motor <NUM> and the first back cover <NUM> may also be <NUM> to <NUM>. In some embodiments, the gap width may also be <NUM> to <NUM>.

In some other examples, the edge of the housing <NUM> at the opening 1a may be fastened to the first middle frame <NUM> in a manner such as sticking or clamping. This is not specifically limited herein.

In some embodiments, a waterproof structure may be disposed between the edge of the housing <NUM> at the opening 1a and the first middle frame <NUM>, to improve waterproof performance of the vibration motor <NUM>. The waterproof structure includes but is not limited to a sealant and a sealing ring. The waterproof structure may alternatively be an annular groove disposed on the surface of the first middle frame <NUM>, and the edge of the housing <NUM> at the opening 1a is embedded in the annular groove, so that a path on which moisture enters the housing <NUM> through the gap can be prolonged, thereby playing a waterproof role.

In some embodiments, the height (that is, a size in a thickness direction of the terminal device) of the vibration motor <NUM> is less than or equal to <NUM>. For example, the height of the vibration motor <NUM> is <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, or the like. In this way, the height of the vibration motor <NUM> is relatively small. This facilitates thinning of the terminal device.

An internal structure of the vibration motor <NUM> shown in <FIG> is the same as an internal structure of the vibration motor <NUM> shown in <FIG>. The following uses only the vibration motor <NUM> shown in <FIG> as an example to describe the internal structure of the vibration motor <NUM>.

Specifically, <FIG> is an exploded view of the vibration motor <NUM> shown in <FIG>. In addition to the housing <NUM>, the vibration motor <NUM> further includes a mass block <NUM>, an elastic assembly <NUM>, a drive assembly <NUM>, and an electrical connection structure <NUM>.

The mass block <NUM> is located in the housing <NUM>. The mass block <NUM> is in a rectangular shape. In some other embodiments, the mass block <NUM> may alternatively be a cube, a sphere, an ellipsoid, or the like. As a vibration body in the vibration motor <NUM>, the mass block <NUM> can reciprocally vibrate on a plane parallel to the plane on which the opening 1a is located. Specifically, on the plane parallel to the plane on which the opening 1a is located, a vibration path of the mass block <NUM> may be a straight line, or may be a curve. In the embodiment shown in <FIG>, with reference to <FIG> and <FIG>, a vibration path of the mass block <NUM> is a straight line. In this way, the vibration motor <NUM> is a lateral linear motor. When the vibration motor <NUM> is used in the terminal device, a vibration direction of the mass block <NUM> is perpendicular to the thickness direction of the terminal device. This helps reduce the mounting height of the vibration motor <NUM> in the terminal device. In some other embodiments, the vibration direction of the mass block <NUM> may alternatively be perpendicular to the plane on which the opening 1a is located. In this way, the vibration motor <NUM> is a longitudinal linear motor. When the vibration motor <NUM> is used in the terminal device, the vibration direction of the mass block <NUM> is consistent with the thickness direction of the terminal device. In some other embodiments, the vibration motor <NUM> may alternatively be a rotor motor. The following embodiments are all described on the basis that the vibration motor <NUM> is a lateral linear motor. This should not be considered as a special limitation on this application.

The elastic assembly <NUM> is configured to elastically support the mass block <NUM> in the housing <NUM>, and the elastic assembly <NUM> allows the mass block <NUM> to vibrate reciprocally in the housing <NUM> in a direction A1. In some embodiments, referring to <FIG>, and with reference to <FIG>, the elastic assembly <NUM> includes a first elastic member <NUM> and a second elastic member <NUM>. Both the first elastic member <NUM> and the second elastic member <NUM> are springs. An arrangement direction of the first elastic member <NUM>, the mass block <NUM>, and the second elastic member <NUM> is parallel to the vibration direction A1 of the mass block <NUM>.

The first elastic member <NUM> includes a first fastening part 41a, a first connection part 41c, and a second fastening part 41c that are connected in sequence. The first fastening part 41a is connected to the mass block <NUM>, and a connection manner includes but is not limited to welding or sticking. The second fastening part 41c is connected to the fourth side wall 12d of the side frame <NUM> in the housing <NUM>, and a connection manner includes but is not limited to welding or sticking. The first connection part 41c is approximately of an n shape, an arch direction A2 of the first connection part 41c is parallel to the plane on which the opening 1a is located, and the arch direction A2 of the first connection part 41c is perpendicular to the vibration direction A1 of the mass block <NUM>.

The second elastic member <NUM> includes a third fastening part 42a, a second connection part 42c, and a fourth fastening part 42c that are connected in sequence. The third fastening part 42a is connected to the mass block <NUM>, and a connection manner includes but is not limited to welding or sticking. The fourth fastening part 42c is connected to the third side wall 12c of the side frame <NUM> in the housing <NUM>, and a connection manner includes but is not limited to welding or sticking. The second connection part 42c is approximately of an n shape, and an arch direction A3 of the second connection part 42c is opposite to the arch direction A2 of the first connection part 41c.

In this way, both the first elastic member <NUM> and the second elastic member <NUM> have a capability of deforming in a direction parallel to the vibration direction A1 of the mass block <NUM>. When the mass block <NUM> vibrates in a direction close to the fourth side wall 12d, an included angle between two arms of the first connection part 41c decreases, and an included angle between two arms of the second connection part 42c increases. When the mass block <NUM> vibrates in a direction close to the third side wall 12c, an included angle between two arms of the first connection part 41c increases, and an included angle between two arms of the second connection part 42c decreases. This structure is simple and easy to implement.

It should be noted that, when it is ensured that the elastic assembly <NUM> can elastically support the mass block <NUM> in the housing <NUM>, and the elastic assembly <NUM> allows the mass block <NUM> to reciprocally vibrate in the direction A1 in the housing <NUM>, the elastic assembly <NUM> may alternatively be designed in another structural form. This is not specifically limited herein.

The drive assembly <NUM> is configured to drive the mass block <NUM> to reciprocally vibrate on the plane parallel to the plane on which the opening 1a is located. In some embodiments, referring to <FIG> and with reference to <FIG>, the drive assembly <NUM> includes a magnet assembly <NUM> and a coil <NUM>. The magnet assembly <NUM> is fastened to the mass block <NUM>. In some embodiments, a mounting groove (including a first mounting groove <NUM> and a second mounting groove <NUM>) is disposed on the mass block <NUM>, and the magnet assembly <NUM> is accommodated and secured in the mounting groove. In some other embodiments, the magnet assembly <NUM> may alternatively be disposed on an outer surface of the mass block <NUM>. The coil <NUM> is fastened to the housing <NUM>. In some embodiments, the coil <NUM> is fastened to the inner surface of the top wall <NUM>. In this way, a support structure of the coil <NUM> does not need to be additionally disposed. This helps reduce the height of the vibration motor <NUM>. The magnet assembly <NUM> cooperates with the coil <NUM> to generate a Lorentz force, and the Lorentz force can drive the mass block <NUM> to reciprocally vibrate on the plane parallel to the plane on which the opening 1a is located.

Specifically, the magnet assembly <NUM> includes a first magnet 51a and a second magnet 51b. The first magnet 51a is housed in the first mounting groove <NUM>, and the second magnet 51b is housed in the second mounting groove <NUM>. The first magnet 51a and the second magnet 51b may be magnetic iron or magnetic steel. A magnetization direction of the first magnet 51a and a magnetization direction of the second magnet 51b are both perpendicular to the plane on which the opening 1a is located, and the magnetization direction of the first magnet 51a is opposite to the magnetization direction of the second magnet 51b. The magnetization direction is a direction from the north pole (that is, the N pole) to the south pole (that is, the S pole). For example, referring to <FIG> and with reference to <FIG>, an upper end of the first magnet 51a is the S pole and a lower end is the N pole, and an upper end of the second magnet 51b is the N pole and a lower end is the S pole. In some other embodiments, the upper end of the first magnet 51a may be the N pole and the lower end is the S pole. Based on this, the upper end of the second magnet 51b is the S pole and the lower end is the N pole. The coil <NUM> has a first side 52a and a second side 52b. Both an extension direction of the first side 52a and an extension direction of the second side 52b are perpendicular to the direction A1, the first magnet 51a is opposite the first side 52a, and the second magnet 51b is opposite the second side 52b. When the coil <NUM> is powered on, the first magnet 51a and the second magnet 51b generate Lorentz forces F1 and F2 parallel to the direction A1, and a direction of F1 is the same as a direction of F2. A combined force of F1 and F2 may drive the mass block <NUM> to move unidirectionally on the plane parallel to the plane on which the opening 1a is located. Based on this, reciprocal vibration of the mass block <NUM> may be driven by current commutation of the coil <NUM>. In some other embodiments, the magnet assembly <NUM> may alternatively include only one of the first magnet 51a and the second magnet 51b, and then one of F1 and F2 drives the mass block <NUM> to move on the plane parallel to the plane on which the opening 1a is located.

In some other embodiments, a disposing position of the magnet assembly <NUM> may be interchangeable with a disposing position of the coil <NUM>. That is, the magnet assembly <NUM> is disposed on the housing <NUM>, and the coil <NUM> is disposed on the mass block <NUM>.

The electrical connection structure <NUM> is configured to lead an electrode of the coil <NUM> out of the housing <NUM>. The electrical connection structure <NUM> includes but is not limited to a printed circuit board (printed circuit board, PCB), a flexible printed circuit (flexible printed circuit board, FPC), and a structure formed by connecting a plurality of wires by using a flexible structure. The electrical connection structure <NUM> includes a first segment <NUM>, a second segment <NUM>, and a third segment <NUM> that are sequentially connected. <FIG> is a schematic diagram of a cross-sectional structure of the vibration motor <NUM> in <FIG> on a line E-E. With reference to <FIG>, the first segment <NUM> is fastened to the inner surface of the top wall <NUM>, and the coil <NUM> is fastened to the first segment <NUM> and electrically connected to the first segment <NUM>. The second segment <NUM> is fastened to the inner surface of the side frame <NUM>. Specifically, the second segment <NUM> may be fastened to an inner surface of the first side wall 12a in the side frame <NUM>. In this way, the first elastic member <NUM> and the second elastic member <NUM> can be avoided, to avoid interference between the electrical connection structure <NUM> and the elastic member <NUM>. In some other embodiments, the second segment <NUM> may alternatively be fastened to an inner surface of the second side wall 12b in the side frame <NUM>. An extension path of the third segment <NUM> is parallel to the plane on which the opening 1a is located, and a part of the third segment <NUM> is located outside the housing <NUM>. A positive terminal 63a and a negative terminal 63b are disposed on the part that is of the third segment <NUM> and that is located outside the housing <NUM>. The electrical connection structure <NUM> can lead an electrode of the coil <NUM> to the third segment <NUM> outside the housing <NUM>, and when the vibration motor <NUM> is used in the terminal device, the third segment <NUM> of the electrical connection structure <NUM> can be fastened and supported by using the first middle frame <NUM>. That is, when the vibration motor <NUM> is used in the terminal device, the third segment <NUM> of the electrical connection structure <NUM> is attached to and fastened to the first middle frame <NUM>. Therefore, the third segment <NUM> is fastened and supported by using the first middle frame <NUM>.

Based on the foregoing embodiment, optionally, referring to <FIG>, an avoidance notch 1b is disposed at the edge of the housing <NUM> at the opening 1a, and the third segment <NUM> penetrates into the avoidance notch 1b. In this way, the third segment <NUM> is prevented from being highly overlapped with the housing <NUM>, so that a large gap exists between the edge of the housing <NUM> at the opening 1a and the first middle frame <NUM>, thereby improving waterproof and sealing performance of the vibration motor <NUM>.

There may be one or more vibration motors <NUM> disposed in the terminal device <NUM>. This is not specifically limited herein. When the terminal device <NUM> is the foldable terminal device shown in <FIG> or <FIG>, a plurality of vibration motors <NUM> may all be disposed in the first accommodation space C1 or may all be disposed in the second accommodation space C2, or some vibration motors <NUM> may be disposed in the first accommodation space C1 and the other vibration motors <NUM> may be disposed in the second accommodation space C2. When some of a plurality of vibration motors <NUM> are disposed in the first accommodation space C1 and the other vibration motors <NUM> are disposed in the second accommodation space C2, a disposing position of the vibration motors in the first accommodation space C1 and a disposing position of the vibration motors in the second accommodation space C2 may be symmetrical with respect to a rotation axis of the rotation mechanism <NUM>. In some other embodiments, the two disposing positions may alternatively be asymmetrical. This is not specifically limited herein.

The vibration motor <NUM> may be sold, stored, transported, or the like as a product structure. Based on this, to avoid a problem of jamming and rusting of the vibration motor <NUM> caused when dust enters the vibration motor <NUM> during transportation, storage, and sale, in some embodiments, refer to <FIG> and <FIG>. <FIG> is a schematic diagram of a structure of the vibration motor <NUM> according to some other embodiments of this application. <FIG> is a schematic diagram of a cross-sectional structure of the vibration motor <NUM> in <FIG> on a line F-F. A removable dustproof structure <NUM> is disposed at the opening 1a. The dustproof structure <NUM> includes but is not limited to gummed paper, a steel plate, a plastic board, or the like. The dustproof structure <NUM> may be sticked to the edge of the housing <NUM> at the opening 1a, or may be disposed at the edge of the housing <NUM> at the opening 1a in a detachable connection manner such as threaded connection or clamping. In some embodiments, the dustproof structure <NUM> is gummed paper. The gummed paper has low costs and high removal efficiency, and is easy to operate. In addition, the gummed paper has specific waterproof performance, and can prevent moisture from entering the vibration motor <NUM>. Before the vibration motor <NUM> is assembled to the terminal device, the dustproof structure <NUM> may be removed.

According to the foregoing description, this application provides a vibration motor and a terminal device with the vibration motor. When a call, a message, or an SMS message is received, the vibration motor can vibrate to prompt a user to view in a timely manner. In addition, when a button displayed on a screen is triggered or is triggered by mistake, the vibration motor can vibrate to implement a tactile feedback.

In the description of this specification, specific features, structures, materials, or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

Claim 1:
A terminal device (<NUM>), comprising:
a first screen (<NUM>);
a first middle frame (<NUM>), wherein at least a part of the first screen is located on one side of the first middle frame and is stacked with the first middle frame; and
a vibration motor (<NUM>), wherein the vibration motor is located on a side that is of the first middle frame and that is away from at least the part of the first screen, the vibration motor comprises a housing (<NUM>), one end of the housing is opened to form an opening (1a), the opening faces the first middle frame, and an edge of the housing at the opening is fastened to the first middle frame;
the housing comprises a top wall (<NUM>) and a side frame (<NUM>), the side frame is disposed around a circumference of the top wall, and an end that is of the side frame and that is away from the top wall surrounds the opening;
the vibration motor further comprises a mass block (<NUM>); and
the mass block is disposed in the housing, and the mass block can reciprocally vibrate relative to the housing on a plane parallel to a plane on which the opening is located;
the vibration motor further comprises a drive assembly (<NUM>), and the drive assembly comprises a magnet assembly (<NUM>) and a coil (<NUM>); and
the magnet assembly is fastened to the mass block, the coil is located between the mass block and the top wall, the coil is fastened to the top wall, the magnet assembly cooperates with the coil to generate a Lorentz force, and the Lorentz force is used to drive the mass block to reciprocally vibrate relative to the housing on the plane parallel to the plane on which the opening is located.