TW201724710A - Linear vibration motor - Google Patents

Abstract

The invention discloses a linear vibration motor. The linear vibration motor comprises a base, a shell, a stator assembly and a vibration assembly, wherein the shell is fixed on the base, the shell and the base form an installation space, the stator assembly and the vibration assembly are oppositely arranged in the installation space along a first direction, the stator assembly is provided with a coil and a circuit board, the vibration assembly comprises a mass block and a magnet, the magnet is arranged on the mass block and is near to the stator assembly, the vibration assembly is suspended on an elastic assembly in the installation space for supporting a support of the stator assembly, so that the coil and the magnet are horizontally opposite to each other, an electromagnetic force is generated to drive the mass block to do linear motion along a second direction, and the first direction and the second direction are crossed and are on the horizontal plane. The coil, the circuit board and the mass block are arranged in a separated way, the coil vibration cannot be generated by the vibration of the mass block, thus, the electromagnetic force generated by the coil and the magnet is stable, and the vibration stability of the mass block is improved; and no other parts are arranged on and under the mass block, the thickness of the motor can be the thickness of the mass block, and thus, the thickness of the motor is reduced.

Description

Linear vibration motor

The invention relates to the technical field of electric machines, and in particular to a linear vibration motor.

With the continuous use of portable electronic products, people are increasingly demanding electronic products, which makes electronic products develop in a more light and thin direction, especially for the thickness of vibration motors in electronic products, requiring vibration motors. The thickness is thinner and the vibration performance is more stable.

The patent document CN20250856U discloses a horizontal linear vibration motor comprising a housing, an upper cover mounted on the top of the housing, and a mounting space formed between the housing and the upper cover; the vibrating element and the stator element are sequentially disposed in the vertical direction in the installation space. Wherein the weights in the vibrating element are disposed in a horizontal direction, the elastic pieces are disposed at both ends of the weight block, the magnets are disposed in the through holes of the weight blocks, and the coils in the stator elements are disposed on the top of the weight block and opposed to the magnets, The circuit board to which the coil is connected is disposed on the outer casing; under the force of the magnetic field, the weight block vibrates in the horizontal direction.

In the above linear vibration motor, since the coil is disposed on the top of the weight block, the coil and the circuit board are inevitably vibrated during the vibration process of the weight block, so that the electromagnetic force generated by the coil to the weight block is not uniform, and the weight of the weight block is unstable. The circuit board is easily damaged, causing defects in the short life of the motor.

In addition, the coil is placed on the top of the weight, so that the thickness of the motor must be greater than or equal to the sum of the thickness of the weight and the coil, resulting in a thick thickness of the motor in the vertical direction, in order to reduce the thickness of the motor, even if the coil and weight When the block is disposed in the horizontal direction, since the magnet is disposed in the through hole of the weight block, it is difficult to be disposed opposite to the coil to generate an electromagnetic force that drives the weight block to linearly vibrate in the horizontal direction.

Therefore, the technical problem to be solved by the present invention is to overcome the short-lived and thick-thickness defects of the linear vibration motor in the prior art, thereby providing a linear vibration motor capable of improving the service life and having a small thickness.

To this end, the present invention provides a linear vibration motor comprising a substrate disposed in a horizontal direction; a housing fixed to the substrate to form a mounting space with the substrate; a stator element located in the mounting space, having a coil and a line a vibration element located in the installation space opposite to the stator element in a first direction, comprising a weight and a magnet mounted on the weight adjacent to the stator element; an elastic element mounted at the On the substrate, and in the installation space, for suspending the vibration element in the installation space; a bracket disposed on the base for supporting the stator element to make the coil and the The magnets are horizontally opposite; when the coil is energized, the weight can be linearly moved in the second direction by the electromagnetic force; the first direction intersects the second direction and is in a horizontal plane.

In the above linear vibration motor, the first direction is perpendicular to the second direction.

In the above linear vibration motor, a first groove is formed in the weight block, and the first groove is a top surface, a bottom surface, and a three-sided open groove open to a side of the coil side, the magnet is mounted In the first groove.

In the above linear vibration motor, the elastic member forms a first space and an opening communicating with the first space; a portion of the weight to which the magnet is mounted is located in the first space and is fixed to the elastic member A portion of the weight from which the magnet is not mounted protrudes from the opening and is located in a space between the opening and an inner wall of the outer casing.

In the above linear vibration motor, the elastic member includes a fixing plate fixed on the base; two elastic pieces, two elastic pieces enclosing the first space, and one ends of the two elastic pieces are connected to the fixing plate. The other ends of the two elastic pieces are oppositely disposed, and the openings are formed.

In the above linear vibration motor, the weight block includes a first portion, a second portion, and a neck connecting the first portion and the second portion; the first portion and the second portion are formed between the neck portion Two mounting slots on the side; the magnet is mounted on the first portion and located in the first space, the neck is passed out from the opening, and the second portion is located in the opening and the outer casing In the space between the inner walls, the two ends of the two elastic pieces are respectively inserted into the mounting groove, and the first portion is enclosed from the outside and fixed on the first portion.

In the above linear vibration motor, the slot of the mounting groove has a circular arc shape.

In the above linear vibration motor, the elastic piece includes a connecting plate sequentially connected, a first circular arc connecting portion, an arc piece, a second circular arc connecting portion, and a baffle, and the connecting plate is connected to the fixing plate; The second circular arc connecting portion is curved toward the first space such that one side surface of the baffle faces the stator element, and the two of the baffles on the two of the elastic sheets form the An opening; the weight is fixed on an inner wall of the baffle and is fitted to an inner wall of the second arc connecting portion.

In the above linear vibration motor, the first circular arc connecting portion is bent outward toward the first space; the circular arc piece is inclined toward the first space; so that the width of the first space is from the first circular arc connecting portion to the circle The arc piece is then increased to the baffle first and then reduced.

In the linear vibration motor described above, the height of the elastic piece increases from the first circular arc connecting portion to the circular arc piece and then to the baffle plate first.

The linear vibration motor described above further includes damping, at least two, disposed between the outer side wall of the weight and the inner side wall of the outer casing, the damping being spaced from the outer side wall of the weight.

In the above linear vibration motor, the stator element includes a core, one end is fixed on the base, the other end is overlapped on the bracket, and is located in the first space; a coil is sleeved on the iron core The other end of the circuit board is disposed on the iron core and connected to the coil.

In the above linear vibration motor, the iron core includes a core body and is fixed on the base; a mounting portion is overlapped on the bracket for arranging the coil; and a transition portion is used for the core body It is connected to the mounting portion such that the height of the mounting portion is higher than the core body.

In the linear vibration motor described above, the mounting portion has an E-shape with an opening facing the magnet, and the coil is sleeved on a middle portion of the E-shape.

In the linear vibration motor described above, one end of the mounting magnet of the weight is in an E-shape in the horizontal direction to form two of the first grooves.

The technical solution of the present invention has the following advantages:

1. The linear vibration motor provided by the present invention comprises a substrate disposed in a horizontal direction, an outer casing fixed to the substrate, the outer casing and the substrate forming a mounting space; a stator member located in the installation space, the stator member having a coil and a circuit board; a vibrating element in the space, disposed opposite the stator element in a first direction, comprising a weight and a magnet mounted on the weight adjacent to the stator element; an elastic element mounted on the substrate and located in the mounting space, suspending the vibrating element The mounting space is disposed on the base for supporting the stator component to make the coil and the magnet level opposite; when the coil is energized, the weight can linearly move along the second direction under the action of the electromagnetic force, the first direction Intersecting with the second direction and both on a horizontal plane.

The above linear vibration motor, the stator element and the vibrating element are all disposed along the first direction, and the stator element is supported by the bracket, so that the coil in the stator element is opposite to the level of the magnet in the vibrating element to generate electromagnetic force and drive the weight block. Do linear motion along the second direction. Since the coil and the circuit board in the stator element are separated from the weight block, the vibration of the coil and the circuit board is not caused during the vibration of the weight block, so that the electromagnetic force generated between the coil and the magnet is stabilized, and the vibration of the weight is improved. Stability, it will not damage the circuit board; at the same time, the direction of the stator element and the vibrating element and the vibration direction of the weight are both in the horizontal plane. In the vertical direction, no other parts are placed above and below the weight. The thickness of the motor can be For the thickness of the weight, thereby reducing the thickness of the motor, the motor can be made thinner.

2. The linear vibration motor provided by the present invention, the first direction is perpendicular to the second direction, and after energization, the coil can generate a stronger electromagnetic force, so that the weight can vibrate more in the second direction.

3. The linear vibration motor provided by the present invention has a first groove formed on the weight block, the first groove is a top surface, a bottom surface, and a three-sided open groove open to the side of the coil side, and the magnet is mounted on the first concave surface. In the groove, the top surface of the magnet, the bottom surface and the side surface close to the coil are all leaked outside the weight block, and the magnet can directly oppose the coil to generate electromagnetic force, and the weight block drives the weight to move linearly in the second direction.

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without departing from the scope of the invention are within the scope of the invention.

In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in the specific case for those skilled in the art.

Further, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

Example 1

As shown in FIG. 1, FIG. 2 and FIG. 3, the first embodiment provides a linear vibration motor including a substrate 1 disposed in a horizontal direction; a casing 2 fixed to the substrate 1 to form a mounting space with the substrate 1; Located in the installation space, having a coil 10 and a circuit board 11; a vibrating element, located in the installation space, opposite to the stator element along the first direction, comprising a weight 6 and a magnet 7 mounted on the weight 6 near the stator element; An elastic member mounted on the substrate 1 and located in the installation space for suspending the vibrating member in the installation space; a bracket 8 disposed on the substrate 1 for supporting the stator member such that the coil 10 and the magnet 7 are horizontally opposed When the coil 10 is energized, the weight 6 can move linearly along the second direction under the action of the electromagnetic force; the first direction intersects the second direction and is both in a horizontal plane.

The above linear vibration motor, the stator element and the vibrating element are all disposed along the first direction, and the stator element is supported by the bracket 8 such that the coil 10 in the stator element is horizontally disposed opposite to the magnet 7 in the vibrating element to generate an electromagnetic force, The driving weight 6 is linearly moved in the second direction. Since the coil 10 and the circuit board 11 in the stator element are both disposed separately from the weight 6, the vibration of the coil 10 and the wiring board 11 is not caused during the vibration of the weight 6, thereby causing electromagnetic generation between the coil 10 and the magnet 7. The force is stable, the stability of the vibration of the weight block 6 is improved, and the circuit board is not damaged; at the same time, the direction of the arrangement of the stator element and the vibrating element and the vibration direction of the weight block 6 are both in a horizontal plane, and in the vertical direction, the weight block 6 No other components are provided on the upper and lower sides. The thickness of the motor can be the thickness of the weight 6 to reduce the thickness of the motor and make the motor thinner.

In a preferred embodiment, the first direction is perpendicular to the second direction, for example, both the stator element and the vibrating element are disposed along the X-axis direction, and the vibration direction of the weight 6 is in the Y-axis direction; or both the stator element and the vibrating element The vibration direction of the weight 6 is set in the X-axis direction along the Y-axis direction. When the first direction is perpendicular to the second direction, after energization, the coil 10 is capable of generating a stronger electromagnetic force so that the weight 6 can vibrate more in the second direction.

As a deformation, the first direction and the second direction may not be perpendicular, and the intersection is at a certain angle, for example, 30°, 45°, 60°, 72°, etc., the closer the angle of intersection is to 90°, the weight per unit time. The vibration amplitude of block 6 is larger. On the contrary, if it is closer to 0°, the vibration amplitude of the weight block 6 per unit time is relatively small.

As a further preferred embodiment, as shown in FIG. 2 and FIG. 4, the weight 6 is provided with a first recess 17 which is a top surface, a bottom surface and three sides of the side opening near the side of the coil 10. The open groove, the magnet 7 is mounted in the first groove 17, the top surface of the magnet 7, the bottom surface and the side surface close to the coil 10 are all leaked outside the weight 6, and the magnet 7 can directly oppose the coil 10. To generate an electromagnetic force, the weight block 6 is driven to move linearly in the second direction.

As a variant, the magnet 7 can also be disposed in a recess formed in the wall surface of the weight block 6 on the side close to the coil 10, and the magnet 7 leaks outside the weight block 6 toward a surface of the coil 10, and generates an electromagnetic force opposite to the coil 10, The other surface is located in the weight 6; or the magnet 7 is directly fixed to the wall of the weight 6 on the side close to the coil 10; or other arrangement, as long as the magnet 7 can directly face the coil 10 in the horizontal direction to generate electromagnetic Power can be.

As a preferred embodiment, as shown in FIG. 3, the elastic member forms a first space and an opening communicating with the first space; the portion of the weight 6 on which the magnet 7 is mounted is located in the first space and is fixed to the elastic member. The portion of the weight 6 where the magnet 7 is not mounted protrudes from the opening and is located in the space between the opening and the inner wall of the outer casing 2.

As a further preferred embodiment, as shown in FIG. 5, the elastic member includes a fixing plate 3 and two elastic pieces 4. The fixing plate 3 is fixed on the base 1 , and the two elastic pieces 4 enclose a first space. One ends of the two elastic pieces 4 are connected to the fixing plate 3 , and the other ends of the two elastic pieces 4 are oppositely disposed, and the opening is formed. . For example, the fixing plate 3 is welded to the base 1 in the Y-axis direction, and the two elastic pieces 4 are respectively fixed on both ends of the fixing plate 3 in a symmetrical manner along the Y-axis direction, and the first space is formed between the two elastic pieces 4. Since the two elastic pieces 4 enclose the first space, the weights 6 vibrate in the first space, so that the structure can be made more compact.

As a preferred embodiment of the weight block 6, as shown in Fig. 6, the weight 6 includes a first portion 61, a second portion 62, and a neck portion 63 connecting the first portion 61 and the second portion 62; the first portion 61 and the second portion Two mounting grooves 64 are formed between the two sides of the neck portion 63; the first portion 61 is mounted with the magnet 7 and is located in the first space, the neck portion 63 is passed through the opening, and the second portion 62 is located at the opening and the outer casing 2 A gap is reserved in the space between the inner walls and between the outer casing 2; the two ends of the two elastic pieces 4 are respectively inserted into the mounting grooves 64, and the first portion 61 is externally enclosed and fixed to the first portion 61.

The weight block 6 of this structure fixes the first portion 61 to the two elastic pieces 4, and when the weight piece 6 vibrates in the second direction, correspondingly compresses or stretches the elastic piece 4, since the weight piece 6 has only one mounting groove 64 The connection point, in order to keep the weight 6 balanced during vibration, the vibration is more stable, the first portion 61 of the weight 6 is located in the first space, and the second portion 62 is located between the opening and the inner wall of the outer casing 2. Within the space. Moreover, since the two end portions of the two elastic pieces 4 are respectively inserted into the mounting grooves 64, the mounting of the elastic piece 4 and the weight piece 6 is more stable.

As a preferred embodiment of the fixing manner of the weight block 6, as shown in FIGS. 3 and 4, a soldering block 5 inserted into the mounting groove 64 is further included, and the surface of one side of the soldering block 5 is fixed on the end of the elastic piece 4, and the other The side surface is fixed to the side wall of the mounting groove 64 close to the second portion 62. It is also possible to directly insert and weld the elastic piece 4 into the mounting groove 64, or other fixing means in the prior art, to fix the ends of the two elastic pieces 4 in the mounting groove 64.

As a preferred embodiment of the mounting groove 64, the notch of the mounting groove 64 has a circular arc shape to facilitate insertion of the end of the elastic piece 4 into the mounting groove 64, and can be more closely fitted with the mounting groove 64. In addition to the circular arc shape, it can be other shapes, such as a right angle.

As a preferred embodiment of the elastic piece 4, as shown in FIG. 5, the elastic piece 4 includes a connecting plate 12, a first circular arc connecting portion 13, an arc piece 14, a second circular arc connecting portion 15, and a baffle 16, which are sequentially connected. The connecting plate 12 is connected to the fixing plate 3;

The second circular arc connecting portion 15 is bent toward the first space such that one surface of the baffle 16 faces the stator element, and an opening is formed between the two baffles 16 on the two elastic pieces 4;

The weight 6 is fixed to the inner wall of the baffle 16 and fitted to the inner wall of the second circular arc connecting portion 15.

As a further preferred embodiment of the elastic piece 4, the first circular arc connecting portion 13 of the elastic piece is bent outwardly toward the first space, and the circular arc piece 14 is inclined toward the first space; so that the width of the first space is from the first circle The arc connecting portion 13 to the circular arc piece 14 is further increased after the baffle 16 is first increased, so that the first gap reserved between the inner wall surface of the elastic piece 4 and the outer surface of the side wall of the weight piece 6 is from the first circular arc connecting portion 13 After the arc piece 14 is added to the baffle 16, it is first increased and then decreased.

The design is mainly because the connecting plate 12 of the elastic piece 4 is fixed. When the weight 6 vibrates in the second direction, the weight 6 continuously compresses or stretches the elastic piece 4, in order to buffer the first circular arc connecting portion 13 The compression and stretching of the weight 6 bends the first circular arc connecting portion 13 outwardly of the first space to increase the width of the first space, and can buffer the stretching of the weight portion 6 on the first circular arc connecting portion 13 or The strength of the compression ensures a firm connection between the first circular arc connecting portion 13 and the connecting plate 12, and does not cause the first circular arc connecting portion 13 to be broken from the connecting plate 12, thereby damaging the elastic piece 4 and prolonging the service life of the elastic piece 4. . Similarly, as the distance of the arc piece 14 away from the connecting plate 12 is further, the reserved first gap between the circular arc piece 14 and the weight piece 6 can be gradually reduced to correspondingly buffer the circular arc piece. 14 is stretched or compressed; the second circular arc connecting portion 15 can be mated with the outer wall of the weight 6 and the baffle 16 is directly fixed to the weight 6.

As a more preferred embodiment of the elastic piece 4, the height of the elastic piece 4 increases from the first circular arc connecting portion 13 to the circular arc piece 14 to the baffle 16 first. Since the side wall of the first portion 61 of the weight 6 is mainly corresponding to the circular arc piece 14, during the vibration of the weight block 6, the height of the circular arc piece 14 is designed to be lower than the first circular arc connecting portion 13 and the second circle. The arc connecting portion 15 can increase the elasticity of the arc piece 14 itself. The stronger the elasticity of the elastic piece 4, the higher the resonance frequency of the elastic piece 4 and the weight block 6, and the greater the vibration amplitude generated.

As a further preferred embodiment, as shown in FIG. 3, the motor further includes a damping 18 disposed between the outer side wall of the weight 6 and the inner side wall of the outer casing, and the damping 18 acts as a shock absorbing effect to prevent The vibration of the weight 6 drives the housing to vibrate, and a gap is reserved between the damping 18 and the outer side wall of the weight 6. This reserved gap is the gap of the vibration amplitude of the weight 6 in the second direction, so that the weight 6 cannot vibrate when it is vibrated. Direct contact with the outer casing 2 to prevent noise. The number of the damping 18 can be two, three, four, five, etc., generally at least two, and the two dampings are respectively located in the space between the two side walls of the weight 6 and the inner wall of the outer casing. . Preferably, the damping 18 is fixed to the inner wall of the outer casing 2, and the damping 18 can also be fixed to the weight 6.

As a preferred embodiment of the stator element, as shown in FIG. 8, the stator element includes a core 9, a coil 10, and a wiring board 11, wherein one end of the core 9 is fixed to the substrate 1, and the other end is overlapped on the bracket 8. The coil 10 is directly sleeved on the other end of the core 9 and located in the first space; the circuit board 11 is disposed on the core 9 and connected to the coil 10. The stator element of such a structure is also provided with a core 9 separately on the coil 10 to increase the electromagnetic force generated by the coil 10 to increase the vibration strength of the weight 6.

As a preferred embodiment of the core 9, as shown in FIGS. 7 and 8, the core 9 includes a core body 91 fixed to the base 1, a mounting portion 92 lapped on the bracket 8, and a mounting portion 92. A coil 10 and a transition portion 93 connecting the core body 91 and the mounting portion 92 are provided. The transition portion 93 is designed such that the height of the mounting portion 92 is higher than the height of the core body 91, so that the coil 10 is sleeved on the mounting portion 92. The coil 10 and the magnet 7 can be horizontally opposed to each other, thereby generating an electromagnetic force for driving the vibration of the weight 6. The transition section 93 may be a circular arc connecting section or a connecting section of other shapes, and is not specifically limited.

As a preferred embodiment of the mounting portion 92, as shown in Fig. 7, the mounting portion 92 has an E shape, the opening faces the magnet 7, and the coil 10 is sleeved on the middle of the E-shape. The E-shaped mounting portion 92 increases the number of magnetic poles of the magnet 7, for example, NSN or SNS, so that the magnetic field force is more oriented, the generated electromagnetic force is more stable, the vibration of the weight 6 is more stable, and the vibration amplitude is also large.

As the deformation of the mounting portion 92, the mounting portion 92 may have a W shape or another shape as long as the shape of the number of magnetic poles can be increased.

As a more preferred embodiment, one end of the mounting magnet 7 of the weight 6 is also designed in an E shape, thereby forming two first grooves 17, in each of which the magnet 7 is mounted, the weight is The E-shape of 6 corresponds exactly to the E-shaped mounting portion 92 of the core 9, so that both of the magnets 7 can horizontally correspond to the coil 10 to enhance the electromagnetic force generated by the coil 10. As a modification, one end of the weight 7 mounting magnet 7 may be designed in a W shape or other shape. Optimally, the shape of the mounting portion 92 is designed to have the same shape as the end of the weight 6 to which the magnet 7 is attached.

As a preferred embodiment of the bracket 8, the bracket 8 is mounted on the fixed plate 3, so that the entire structure is compact and the occupied space is relatively small. As a variant, the bracket 8 can also be provided separately on the base 1 as long as the coil 10 in the stator element overlapping the bracket 8 is horizontally opposed to the magnet 7. The specific shape of the stent is not specifically limited.

As a more preferred embodiment, two vertical plates 19 are disposed on the base 1 at corresponding positions on both ends of the fixing plate 3, and the outer side wall of the connecting plate 12 of the elastic piece 4 is fixed on the inner side wall of the vertical plate 19, and the connecting plate The inner side wall of the 12 is fixed to the outer wall of the bracket 8 in such a manner that the elastic member is fixed to the base 1 and is tightly coupled to the bracket 8 so that the elastic member can be better fixed to the base 1.

The specific process of the linear vibration motor provided in this embodiment is as follows: the fixing plate 3 is fixed on the substrate 1, the two connecting plates 12 of the elastic element are fixed on the fixing plate 3, and the bracket 8 is mounted on the fixing plate 3; The magnet 7 is then mounted on the weight 6 and the two baffles 16 of the spring 4 are inserted into the mounting slots 64 of the weight and secured by the solder bumps 5 to secure the weight 6 to the spring 4; On the substrate 1, and the mounting portion 92 of the core 9 is overlapped on the bracket 8, the coil 10 and the magnet 7 are horizontally opposed; then the damping 18 is fixed on the outer casing 2, and finally the outer casing 2 is directly fixed to the edge of the substrate 1. On, form a complete motor.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those of ordinary skill in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.

1‧‧‧Base
2‧‧‧ Shell
3‧‧‧ fixed plate
4‧‧‧Shrap
5‧‧‧welding block
6‧‧‧ weights
61‧‧‧Part 1
62‧‧‧Part II
63‧‧‧ neck
64‧‧‧Installation slot
7‧‧‧ Magnet
8‧‧‧ bracket
9‧‧‧ iron core
91‧‧‧iron core
92‧‧‧Installation Department
93‧‧‧Transition
10‧‧‧ coil
11‧‧‧ circuit board
12‧‧‧Connecting board
13‧‧‧First arc connection
14‧‧‧Arc pieces
15‧‧‧Second arc connection
16‧‧‧Baffle
17‧‧‧First groove
18‧‧‧ damping
19‧‧‧ vertical board

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the specific embodiments or the description of the prior art will be briefly described below. Obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without paying progressive labor.

1 is a structural exploded view of an embodiment of a linear vibration motor provided by the present invention (removing the outer casing);

2 is a schematic view showing the installation of a weight block and an elastic member in a linear vibration motor provided by the present invention;

3 is a bottom view of a linear motor according to an embodiment of the present invention (removing the substrate);

4 is a top plan view showing the internal structure of an embodiment of the linear vibration motor provided by the present invention (removing the substrate and the outer casing);

5 is a schematic structural view of an elastic member in a linear vibration motor provided by the present invention;

6 is a schematic structural view of a weight block in a linear vibration motor provided by the present invention;

7 is a schematic structural view of an iron core in a linear vibration motor provided by the present invention;

Figure 8 is a top plan view of a stator element in a linear vibration motor provided by the present invention.

4‧‧‧Shrap

5‧‧‧welding block

6‧‧‧ weights

7‧‧‧ Magnet

8‧‧‧ bracket

10‧‧‧ coil

11‧‧‧ circuit board

17‧‧‧First groove

18‧‧‧ damping

Claims (15)

A linear vibration motor, comprising: a substrate (1) disposed in a horizontal direction; a casing (2) fixed to the substrate (1) to form a mounting space with the substrate (1); Located in the installation space, having a coil (10) and a circuit board (11); a vibrating element located in the installation space, opposite to the stator element along a first direction, comprising a weight (6) And a magnet (7) mounted on the weight (6) adjacent to the stator member; an elastic member mounted on the substrate (1) and located in the mounting space for suspending the vibrating member a mounting space (8) disposed on the base (1) for supporting the stator element such that the coil (10) is horizontally opposed to the magnet (7); when the coil (10) is energized The weight can be linearly moved in a second direction under the action of electromagnetic force; the first direction intersects the second direction and is both in a horizontal plane. The linear vibration motor of claim 1, wherein the first direction is perpendicular to the second direction. The linear vibration motor of claim 1 or 2, wherein a first groove (17) is defined in the weight block, the first groove (17) being a top surface, a bottom surface, and a coil adjacent to the coil The three sides of the side are open and open, and the magnet is mounted in the first recess (17). The linear vibration motor of claim 3, wherein: the elastic member forms a first space and an opening communicating with the first space; the portion of the weight (6) on which the magnet is mounted is located A space is fixed to the elastic member; a portion of the weight (6) where the magnet is not mounted protrudes from the opening and is located in a space between the opening and the inner wall of the outer casing (2). The linear vibration motor of claim 4, wherein the elastic member comprises a fixing plate (3) fixed to the substrate (1); two elastic pieces (4), the two elastic pieces (4) Enclosing the first space, one end of the two elastic pieces (4) is connected to the fixing plate (3), and the other ends of the two elastic pieces (4) are oppositely disposed, and an opening is formed. The linear vibration motor of claim 5, wherein: the weight (6) comprises a first portion (61), a second portion (62), and the first portion (61) and the second portion a neck (63) of (62); between the first portion (61) and the second portion (62), two mounting slots (64) are formed on opposite sides of the neck portion (63); the first portion ( 62) mounting the magnet and located in the first space, the neck (63) penetrating from the opening, the second portion (62) being located in a space between the opening and the inner wall of the outer casing (2); The two ends of the two elastic pieces (4) are respectively inserted into the mounting groove (64), and the first portion (61) is externally enclosed and fixed to the first portion (61). The linear vibration motor of claim 6, wherein the mounting groove (64) has a circular arc shape at a notch. The linear vibration motor of claim 7, wherein: the elastic piece (4) comprises a connecting plate (12), a first circular arc connecting portion (13), and an arc piece (14) connected in sequence. a second arc connecting portion (15) and a baffle (16), the connecting plate (12) is connected to the fixing plate (3); the second arc connecting portion (15) faces the first space Bending so that one side surface of the baffle (16) faces the stator element, and an opening is formed between the two baffles (16) on the two elastic pieces (4); the weight (6) It is fixed on the inner wall of the baffle (16) and is fitted to the inner wall of the second arc connecting portion (15). The linear vibration motor of claim 8, wherein: the first circular arc connecting portion (13) is curved outwardly toward the first space; the circular arc plate (14) is inclined toward the first space; The width of the first space is increased from the first circular arc connecting portion (13) to the circular arc plate (14) to the baffle (16) first and then decreased. The linear vibration motor of claim 9, wherein the height of the elastic piece (4) is from the first circular arc connecting portion (13) to the circular arc piece (14) to the baffle (16) First decrease and then increase. The linear vibration motor of claim 1 or 2, further comprising at least two dampings (18) disposed between an outer side wall of the weight (6) and an inner side wall of the outer casing (2) A second gap is reserved between the damping (18) and the outer sidewall of the weight (6). A linear vibration motor according to any one of the preceding claims, wherein the stator element comprises a core (9) fixed at one end to the base (1) and at the other end to the bracket (8) And located in the first space; a coil (10) is sleeved on the other end of the core (9); a circuit board (11) is disposed on the core (9), and The coil (10) is connected. A linear vibration motor according to claim 12, wherein the core (9) comprises a core body (91) fixed to the base (1); and a mounting portion (92) overlapped The bracket (8) is used for arranging the coil (10); a transition section (93), the core body (91) is connected to the mounting portion (92) such that the height of the mounting portion (92) Higher than the core body (91). The linear vibration motor according to claim 13, wherein the mounting portion (92) has an E-shape with an opening facing the magnet (7), and the coil (10) is sleeved on the middle of the E-shape. The linear vibration motor of claim 14, wherein: in the horizontal direction, one end of the weight (6) on which the magnet (7) is mounted is E-shaped to form two of the first grooves (17). ).