Elastic support, linear vibration motor, and electronic device

Abstract

The invention discloses an elastic supporting piece, a linear vibration motor and electronic equipment, and belongs to the technical field of vibration devices.The elastic supporting piece comprises a first fixing part, a second fixing part and an elastic arm located between the first fixing part and the second fixing part, the elastic arm comprises a deformation area and a non-deformation area, and in the non-deformation area, the deformation area is larger than the deformation area. The edge of the elastic arm is provided with a protruding part, the protruding part is bent relative to the elastic arm, and the bending angle is larger than or equal to 0 degree and smaller than 90 degrees or larger than 90 degrees and smaller than or equal to 135 degrees. The characteristic that the stress of the non-deformation area of the elastic supporting piece is small is fully utilized, the protruding part bending design is added, the rigidity of the elastic supporting piece in the non-main vibration direction can be improved, polarization in the non-main vibration direction is small, it can be guaranteed that the stress in the main vibration direction does not change obviously, and the overall reliability of a product is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of vibration device technology, and in particular to an elastic support, a linear vibration motor, and electronic equipment. Background Technology

[0002] Linear vibration motors, due to their fast response and distinct directional vibration, can enhance the user's tactile experience and are widely used in devices such as mobile phones. A linear vibration motor typically includes a housing and an oscillator assembly and a stator assembly housed within the housing. The oscillator assembly is suspended within the housing by elastic supports and can reciprocate under the drive of the stator assembly.

[0003] During the research process, the inventors discovered that, taking the V-shaped spring as an example, in the structure of ultra-thin products (height less than 2.5mm), the overall Z-direction width of the spring is narrow due to the limited Z-direction space, and the stiffness in the non-vibration direction is low. During the product vibration, Z-direction polarization is easily generated, resulting in a large displacement in the non-main vibration direction of Z-direction. This makes the oscillator assembly, spring, and other components risk rubbing against the outer shell and generating noise. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an elastic support component with high stiffness in the non-dominant direction and low polarization, a linear vibration motor, and an electronic device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: On one hand, embodiments of the present invention provide an elastic support for a linear vibration motor, including a first fixing part, a second fixing part, and an elastic arm located between the first fixing part and the second fixing part. The elastic arm includes a deformation region and a non-deformation region. In the non-deformation region, the edge of the elastic arm is provided with a protrusion. The protrusion is bent relative to the elastic arm, and the bending angle is greater than or equal to 0 degrees and less than 90 degrees, or greater than 90 degrees and less than or equal to 135 degrees.

[0006] In some embodiments of the present invention, the protrusion is bent toward the inside or outside of the elastic arm; And / or, the protrusion is rectangular, trapezoidal, or semi-circular; And / or, the ratio of the height of the protrusion to the height of the elastic support is 1 / 4 to 1 / 3; And / or, the ratio of the width of the protrusion to the length of the elastic support after it is flattened is 1 / 10 to 1 / 5.

[0007] In some embodiments of the present invention, the bending angle is 3 degrees to 75 degrees, or 120 degrees to 135 degrees.

[0008] In some embodiments of the present invention, the bending angle is 4 degrees to 45 degrees.

[0009] In some embodiments of the present invention, the elastic support is a V-shaped spring sheet, and the non-deformation area includes a first non-deformation area connected to the first fixing part and a second non-deformation area connected to the second fixing part, wherein the deformation area is connected between the first non-deformation area and the second non-deformation area.

[0010] In some embodiments of the present invention, the elastic support is an L-shaped spring sheet, the deformation zone includes a first deformation zone connected to the first fixing part and a second deformation zone connected to the second fixing part, the non-deformation zone includes a first non-deformation zone connected to the first deformation zone and a second non-deformation zone connected to the second deformation zone, and the deformation zone further includes a third deformation zone connected between the first non-deformation zone and the second non-deformation zone and far away from the first deformation zone and the second deformation zone.

[0011] In some embodiments of the present invention, in one of the non-deformation regions, the elastic arm has a protrusion on only one side edge, and in another of the non-deformation regions, the elastic arm has a protrusion on only the opposite side edge; Alternatively, a protrusion may be provided on one side edge of the elastic arm in one of the non-deformation regions and on the opposite side edge of the elastic arm in the other non-deformation region, and two protrusions may be provided on the other side edge of the elastic arm in one of the non-deformation regions and on the opposite side edge of the elastic arm in the other non-deformation region. Alternatively, in each non-deformation zone, a protrusion is provided on each of the two sides of the elastic arm.

[0012] In some embodiments of the present invention, the elastic support is a C-shaped spring sheet, the deformation zone includes a first deformation zone connected to the first fixing part and a second deformation zone connected to the second fixing part, and the non-deformation zone is connected between the first deformation zone and the second deformation zone.

[0013] On the other hand, embodiments of the present invention provide a linear vibration motor, including a housing, an oscillator assembly and a stator assembly housed within the housing, wherein the oscillator assembly is suspended within the housing by the aforementioned elastic support member, a first fixing part is connected to the housing, and a second fixing part is connected to the oscillator assembly.

[0014] In another aspect, embodiments of the present invention provide an electronic device including the aforementioned linear vibration motor.

[0015] The present invention has the following beneficial effects: The elastic support, linear vibration motor, and electronic device of this invention include a first fixed part, a second fixed part, and an elastic arm located between the first and second fixed parts. The elastic arm includes a deformation region and a non-deformation region. In the non-deformation region, the edge of the elastic arm has a protrusion. The protrusion is bent relative to the elastic arm, with a bending angle greater than or equal to 0 degrees and less than 90 degrees, or greater than 90 degrees and less than or equal to 135 degrees. Thus, this invention fully utilizes the characteristic of low stress in the non-deformation region of the elastic support by incorporating a protrusion bending design. This not only improves the stiffness of the elastic support in the non-dominant vibration direction, resulting in less polarization in the non-dominant vibration direction, greatly reducing the risk of noise generated by the oscillator assembly, elastic support, and other components rubbing against the housing, thus improving the user experience, but also ensures that the stress in the dominant vibration direction (i.e., the vibration direction of the oscillator assembly) does not change significantly, guaranteeing the overall reliability of the product. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the initial design structure of the elastic support member of the present invention, wherein (a) corresponds to a V-shaped spring, (b) corresponds to an L-shaped spring, and (c) corresponds to a C-shaped spring; Figure 2 This is a schematic diagram of the structure of an embodiment of the elastic support member of the present invention; Figure 3 These are schematic diagrams showing different bending angles of the elastic support member in Embodiment 1 of the present invention; Figure 4 for Figure 2 A schematic diagram showing the relationship between the non-vibrational stiffness of the elastic support and the bending angle. Figure 5 This is a schematic diagram of the structure of the elastic support member according to Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the elastic support member of the present invention at different bending angles in Embodiment 2; Figure 7 This is a schematic diagram of the structure of the elastic support member of the present invention in Embodiment 3; Figure 8 This is one embodiment of the linear vibration motor of the present invention (using...) Figure 2 Exploded view of the elastic support shown; Figure 9 Another embodiment of the linear vibration motor of the present invention (using...) Figure 5 The diagram shows the exploded structure of the elastic support shown.

[0017] Figure label: 100. Linear vibration motor 1. Elastic support member; 11. First fixing part; 12. Second fixing part; 13. Elastic arm; 131. Deformation zone; 131a. First deformation zone; 131b. Second deformation zone; 131c. Third deformation zone; 132. Non-deformation zone; 132a. First non-deformation zone; 132b. Second non-deformation zone. 2. Shell, 21. Upper shell, 22. Lower shell, 3. Oscillator assembly; 31. Mass block; 311. First clearance groove; 312. Second clearance groove; 313. Receiving hole; 32. Magnetic circuit assembly; 321. First magnet; 322. Second magnet. 4. Stator assembly; 41. Coil; 42. Electromagnetic damping component. 5. FPC. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] On one hand, embodiments of the present invention provide an elastic support 1 for a linear vibration motor 100, including a first fixing part 11, a second fixing part 12, and an elastic arm 13 located between the first fixing part 11 and the second fixing part 12. The elastic arm 13 includes a deformation area 131 and a non-deformation area 132. In the non-deformation area 132, a protrusion 133 is provided on the edge of the elastic arm 13. The protrusion 133 is bent relative to the elastic arm 13, and the bending angle is greater than or equal to 0 degrees and less than 90 degrees, or greater than 90 degrees and less than or equal to 135 degrees. Preferably, the bending angle is 3 degrees to 75 degrees, or 120 degrees to 135 degrees. More preferably, the bending angle is 4 degrees to 45 degrees, such as 5 degrees, 15 degrees, 25 degrees, 30 degrees, 35 degrees, etc.

[0020] It should be noted that, in this application, the deformation zone 131 refers to the area on the elastic support 1 with relatively large deformation during the vibration of the oscillator assembly 3, that is, the area with relatively large / concentrated stress. Figure 1 The curved section of the elastic arm 13; the non-deformation zone 132 refers to the area on the elastic support 1 with relatively small deformation during the vibration of the oscillator assembly 3, that is, the area with relatively small / dispersed stress. Figure 1 The straight section of the elastic arm 13; the bending angle is the angle between the protrusion 133 and the plane where the non-deformation area 132 is located; considering that the protrusion 133 will have a greater impact on the vibration range of the elastic arm 13 in the vibration direction when bent at 90 degrees, the 90-degree bend is excluded.

[0021] The elastic support 1 of this invention includes a first fixing part 11, a second fixing part 12, and an elastic arm 13 located between the first fixing part 11 and the second fixing part 12. The elastic arm 13 includes a deformation region 131 and a non-deformation region 132. In the non-deformation region 132, a protrusion 133 is provided on the edge of the elastic arm 13. The protrusion 133 is bent relative to the elastic arm 13, and the bending angle is greater than or equal to 0 degrees and less than 90 degrees, or greater than 90 degrees and less than or equal to 135 degrees. Thus, this invention fully utilizes the characteristic of low stress in the non-deformation region 132 of the elastic support 1. By adding the bending design of the protrusion 133, it can not only improve the stiffness of the elastic support 1 in the non-dominant vibration direction, resulting in a smaller polarization in the non-dominant vibration direction, greatly reducing the risk of noise generated by the collision between the oscillator assembly 3, the elastic support 1, and other components with the housing 2, thus improving the user experience of the product, but also ensure that the stress in the dominant vibration direction (i.e., the vibration direction of the oscillator assembly 3) does not change significantly, thus ensuring the overall reliability of the product.

[0022] In some embodiments of the present invention, the protrusion 133 can be bent either inward or outward of the elastic arm 13. To avoid affecting the vibration range of the elastic arm 13 in the vibration direction, it is preferable to bend inward. The protrusion 133 can be of various shapes, such as rectangular, trapezoidal, semi-circular, etc., without affecting the implementation of the present invention. The edges of the protrusion 133 can be rounded. In the embodiment shown in the figure, the non-deformation area 132 has a waist-cinching design / avoidance groove. It is understood that the waist-cinching design may or may not be present, without affecting the implementation of the present invention.

[0023] In some embodiments of the present invention, reference is made to Figure 5 The height h of the protrusion 133 (the height when bent at 0 degrees) is 1 / 4 to 1 / 3 of the height H of the entire elastic support 1. If the height is too small, the improvement in stiffness in the non-dominant vibration direction is weak; if the height is too large, it will easily affect the vibration range of the elastic support 1 in the vibration direction. The width w of the protrusion 133 is 1 / 10 to 1 / 5 of the length of the entire elastic support 1 after it is flattened, such as 1 / 8, 1 / 7, 1 / 6, etc. In this way, within this size range, the elastic support 1 has the best stiffness in the non-dominant vibration direction and the smallest polarization in the non-dominant vibration direction.

[0024] Depending on the shape of the elastic support 1, the embodiments of the present invention can be implemented in the following ways: Implementation Method 1 refer to Figure 1 (a) Figure 2 , Figure 5 and Figure 7As shown, the elastic support 1 is a V-shaped spring sheet. The non-deformation area 132 includes a first non-deformation area 132a connected to the first fixing part 11 and a second non-deformation area 132b connected to the second fixing part 12. The deformation area 131 is connected between the first non-deformation area 132a and the second non-deformation area 132b. That is, the elastic support 1 sequentially includes the first fixing part 11, the first non-deformation area 132a, the deformation area 131, the second non-deformation area 132b, and the second fixing part 12.

[0025] In this first implementation, the number and arrangement of the protrusions 133 can be flexibly set as needed, and the following specific embodiments are possible. Example

[0026] like Figure 2-3 As shown, in one of the non-deformation zones 132, the elastic arm 13 has a protrusion 133 on only one side edge (middle), and in the other non-deformation zone 132, the elastic arm 13 has a protrusion 133 on only the opposite side edge (middle). This achieves the staggered arrangement of the protrusions 133 to avoid affecting the vibration range of the elastic support 1.

[0027] Meanwhile, during the design process, it was discovered that for the same spring sheet structure, the added bending design exhibits different stress and stiffness levels depending on the bending angle, such as... Figure 4 As shown, Figure 2 The stiffness of the non-vibration zone (i.e., non-deformation zone 132) of the elastic support 1 shows a trend of first increasing, then decreasing and then increasing again as the bending angle increases (see Table 1 for specific stiffness values). The stiffness reaches its peak at around 30° of bending, and the stiffness is lowest when there is no bending angle. When designing the elastic sheet bending structure, the bending angle can be reasonably selected by making full use of the space volume.

[0028] Table 1. Stiffness values ​​at various bending angles Serial Number Bending angle Stiffness (MPa) 1# No protrusions 14.367 2# 0° bend 15.693 3# Bending 5° 16.574 4# Bending 10° 16.556 5# Bending 15° 16.626 6# Bending 20° 16.512 7# Bending 25° 16.558 8# Bending 30° 16.612 9# Bending 35° 16.526 10# Bending 40° 16.461 11# Bending 45° 16.508 12# Bending 60° 16.452 13# Bending 75° 16.349 14# Bending 90° 16.135 15# 120° bend 16.262 16# 135° bend 16.319 As shown in Table 1, compared with the prior art (without protrusion 133), the non-vibration stiffness of the elastic support member 1 is increased by at least 9% in this application. Compared with 0-degree bending, the non-vibration stiffness is further improved at different bending angles. Example

[0029] like Figure 5-6As shown, a protrusion 133 is provided on one side edge (middle) of one of the non-deformation zones 132 elastic arms 13 and on the opposite side edge (middle) of the other non-deformation zone 132 elastic arms 13. Two protrusions 133 are provided on the other side edge of one of the non-deformation zones 132 elastic arms 13 and on the opposite side edge of the other non-deformation zone 132 elastic arms 13. In this way, the protrusions 133 are staggered to avoid affecting the vibration range of the elastic support 1. Example

[0030] like Figure 7 As shown, in each non-deformation zone 132, a protrusion 133 is provided on each of the two sides (middle) of the elastic arm 13.

[0031] Implementation Method Two refer to Figure 1 As shown in (b), the elastic support 1 is an L-shaped spring sheet. The deformation zone 131 includes a first deformation zone 131a connected to the first fixing part 11 and a second deformation zone 131b connected to the second fixing part 12. The non-deformation zone 132 includes a first non-deformation zone 132a connected to the first deformation zone 131a and a second non-deformation zone 132b connected to the second deformation zone 131b. The deformation zone 131 also includes a third deformation zone 131c connected between the first non-deformation zone 132a and the second non-deformation zone 132b and located away from the first deformation zone 131a and the second deformation zone 131b. That is, the elastic support 1 sequentially includes the first fixing part 11, the first deformation zone 131a, the first non-deformation zone 132a, the third deformation zone 131c, the second non-deformation zone 132b, the second deformation zone 131b, and the second fixing part 12.

[0032] In this second implementation, the arrangement of the protrusions 133 can be the same as in the first implementation, and will not be described again here.

[0033] Implementation Method 3 refer to Figure 1 As shown in (c), the elastic support 1 is a C-shaped spring sheet. The deformation zone 131 includes a first deformation zone 131a connected to the first fixing part 11 and a second deformation zone 131b connected to the second fixing part 12. The non-deformation zone 132 is connected between the first deformation zone 131a and the second deformation zone 131b. That is, the elastic support 1 sequentially includes a first fixing part 11, a first deformation zone 131a, a non-deformation zone 132, a second deformation zone 131b, and a second fixing part 12.

[0034] In this third implementation, the arrangement of the protrusions 133 can be the same as that of the protrusions 133 on one of the non-deformable regions 132 in the first implementation, and will not be described again here.

[0035] On the other hand, embodiments of the present invention provide a linear vibration motor 100, such as... Figure 8 and Figure 9 As shown, the device includes a housing 2, an oscillator assembly 3 housed within the housing 2, and a stator assembly 4. The oscillator assembly 3 is suspended within the housing 2 by the aforementioned elastic support 1. The first fixing part 11 is connected to the housing 1, and the second fixing part 12 is connected to the oscillator assembly 3. The structure of the elastic support 1 is the same as described above and will not be repeated here.

[0036] Since the linear vibration motor 100 proposed in this application applies all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated here.

[0037] In some embodiments of the present invention, the oscillator assembly 3 includes a mass block 31 and a magnetic circuit assembly 32, and the stator assembly 4 includes a coil 41 and an electromagnetic damping element 42. The coil 41 is provided on one side of the oscillator assembly 3 along a first direction, and the electromagnetic damping element 42 is provided on the other side. The first direction is perpendicular to the vibration direction of the oscillator assembly 3.

[0038] In some embodiments of the present invention, the mass block 31 is provided with a receiving hole 313 through it along a first direction, and the magnetic circuit assembly 32 is located in the receiving hole 313; the magnetic circuit assembly 32 includes a first magnet 321 and a second magnet 322 arranged side by side along the vibration direction of the oscillator assembly 3, the magnetization directions of the first magnet 321 and the second magnet 322 are opposite and parallel to the first direction, and the two driving sides of the coil 41 are respectively arranged corresponding to the first magnet 321 and the second magnet 322; along the vibration direction of the oscillator assembly 3, elastic support members 1 are provided between the two side walls of the mass block 31 and the housing 1, the first fixing part 11 of the elastic support member 1 is fixed to the housing 2, and the second fixing part 12 of the elastic support member 1 is fixed to the mass block 31.

[0039] In some embodiments of the present invention, a first clearance groove 311 is provided in the middle of the side of the mass block 31 near the electromagnetic damper 42, which extends through the vibration direction of the oscillator assembly 3, and the electromagnetic damper 42 is at least partially located in the first clearance groove 311; a second clearance groove 312 is provided in the middle of the side of the mass block 31 near the coil 41, which extends through the vibration direction of the oscillator assembly 3, and the coil 41 is at least partially located in the second clearance groove 312.

[0040] In some embodiments of the present invention, the housing 2 includes a lower housing 22 and an upper housing 21 covering the lower housing 22. In this case, both the upper housing 21 and the lower housing 22 can be made of magnetically conductive material. The coil 41 is fixed to the lower housing 22, and the electromagnetic damping element 42 is fixed to the upper housing 21. An FPC 5 may also be provided on the lower housing 22. The FPC 5 is electrically connected to the coil 41, and the FPC 5 enables the coil 41 to be connected to an external circuit, thereby providing alternating current to the coil 41.

[0041] Figure 8 and Figure 9 The example shown illustrates the specific application of the elastic support 1 in the overall structural assembly. This application is not limited to this schematic scheme. All designs that apply this type of elastic support 1 are within the scope of protection. At the same time, this scheme only illustrates the horizontal vibration of the elastic support 1, i.e., the X / Y direction vibration. It can be inferred that the Z-direction vibration of the elastic support 1 is also within the scope of protection.

[0042] Furthermore, embodiments of the present invention provide an electronic device including the aforementioned linear vibration motor 100. The structure of the linear vibration motor 100 is the same as described above and will not be repeated here. The electronic device may be a mobile phone, watch, tablet computer, smart wearable device, virtual reality device, or augmented reality device, etc.

[0043] Since the electronic device proposed in this application applies all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated here.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An elastic support member for a linear vibration motor, characterized in that, It includes a first fixing part, a second fixing part, and an elastic arm located between the first fixing part and the second fixing part. The elastic arm includes a deformation area and a non-deformation area. In the non-deformation area, the edge of the elastic arm is provided with a protrusion. The protrusion is bent relative to the elastic arm, and the bending angle is greater than or equal to 0 degrees and less than 90 degrees, or greater than 90 degrees and less than or equal to 135 degrees.

2. The elastic support member according to claim 1, characterized in that, The protrusion bends toward the inside or outside of the elastic arm; And / or, the protrusion is rectangular, trapezoidal, or semi-circular; And / or, the ratio of the height of the protrusion to the height of the elastic support is 1 / 4 to 1 / 3; And / or, the ratio of the width of the protrusion to the length of the elastic support after it is flattened is 1 / 10 to 1 / 5.

3. The elastic support member according to claim 1, characterized in that, The bending angle is 3 degrees to 75 degrees, or 120 degrees to 135 degrees.

4. The elastic support member according to claim 3, characterized in that, The bending angle is 4 degrees to 45 degrees.

5. The elastic support member according to claim 1, characterized in that, The elastic support is a V-shaped spring sheet. The non-deformation area includes a first non-deformation area connected to the first fixing part and a second non-deformation area connected to the second fixing part. The deformation area is connected between the first non-deformation area and the second non-deformation area.

6. The elastic support member according to claim 1, characterized in that, The elastic support is an L-shaped spring sheet. The deformation zone includes a first deformation zone connected to the first fixing part and a second deformation zone connected to the second fixing part. The non-deformation zone includes a first non-deformation zone connected to the first deformation zone and a second non-deformation zone connected to the second deformation zone. The deformation zone also includes a third deformation zone connected between the first non-deformation zone and the second non-deformation zone and far away from the first and second deformation zones.

7. The elastic support member according to claim 5 or 6, characterized in that, In one of the non-deformation zones, the elastic arm has a protrusion on only one side edge, and in the other non-deformation zone, the elastic arm has a protrusion on only the opposite side edge; Alternatively, a protrusion may be provided on one side edge of the elastic arm in one of the non-deformation regions and on the opposite side edge of the elastic arm in the other non-deformation region, and two protrusions may be provided on the other side edge of the elastic arm in one of the non-deformation regions and on the opposite side edge of the elastic arm in the other non-deformation region. Alternatively, in each non-deformation zone, a protrusion is provided on each of the two sides of the elastic arm.

8. The elastic support member according to claim 1, characterized in that, The elastic support is a C-shaped spring sheet, and the deformation zone includes a first deformation zone connected to the first fixing part and a second deformation zone connected to the second fixing part. The non-deformation zone is connected between the first deformation zone and the second deformation zone.

9. A linear vibration motor, characterized in that, It includes a housing, an oscillator assembly and a stator assembly housed within the housing, the oscillator assembly being suspended within the housing by an elastic support member as described in any one of claims 1-8, the first fixing part being connected to the housing, and the second fixing part being connected to the oscillator assembly.

10. An electronic device, characterized in that, Including the linear vibration motor as described in claim 9.

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