CN218648706U

CN218648706U - Vibration motor and electronic device

Info

Publication number: CN218648706U
Application number: CN202222252255.XU
Authority: CN
Inventors: 史德璋; 修艺栩; 王永强
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-03-17
Anticipated expiration: 2032-08-25

Abstract

A vibration motor and an electronic apparatus including the same are provided. The vibration motor includes: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed inside the shell; the vibrator assembly is arranged in the accommodating cavity and comprises a magnet assembly; the stator assembly is arranged in the accommodating cavity and comprises a coil, and the coil drives the magnet assembly to vibrate; the elastic pieces are arranged at two ends of the vibrator assembly along the vibration direction of the magnet assembly, one end of each elastic piece is connected with the inner wall of the shell, and the other end of each elastic piece is connected with the vibrator assembly; the bracket is arranged between the elastic part and the vibrator component; the damping piece, the damping piece includes first damping piece, and first damping piece sets up between elastic component and support. The utility model discloses a damping piece sets up between elastic component and support among the vibrating motor, and consequently the damping piece receives the temperature variation of coil to influence for a short time, has promoted the stability of damping piece, and then has promoted vibrating motor's stable performance, has prolonged its life.

Description

Vibration motor and electronic device

Technical Field

The utility model belongs to the technical field of linear motor, concretely relates to vibrating motor and electronic equipment.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The linear vibration motor is widely applied to electronic equipment such as a mobile phone due to the characteristics of quick response, excellent vibration sense and the like, and in order to provide better experience for users, the linear vibration motor is usually provided with an ultra-high voltage and short-time excitation signal, so that the linear vibration motor can reach the maximum vibration state within the shortest period. However, the temperature of the coil is rapidly increased under the excitation of high voltage, and thus higher requirements are made on the structure and reliability of the vibration motor. The existing vibration motor product has the advantages that foam is in direct contact with a coil, the temperature of the coil is rapidly increased under the excitation of high voltage, if the vibration motor product works for a long time, the temperature is even increased to 180 ℃ or even higher, and the size of the foam is reduced or even the foam is melted due to high temperature.

In order to meet the working condition of the vibration motor under such severe conditions, a novel vibration motor is provided in need, the influence of high temperature on foam is reduced, and the service life of the vibration motor in severe environment is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving to a certain extent at least and steep cotton and coil direct contact in current vibrating motor, the high temperature of coil leads to the technical problem that the bubble cotton worsens.

To achieve the above object, a first aspect of the present invention provides a vibration motor, including: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed inside the shell; the vibrator assembly is arranged in the accommodating cavity and comprises a magnet assembly; the stator assembly is arranged in the accommodating cavity and comprises a coil, and the coil drives the magnet assembly to vibrate; the elastic pieces are arranged at two ends of the vibrator assembly along the vibration direction of the magnet assembly, one end of each elastic piece is connected with the inner wall of the shell, and the other end of each elastic piece is connected with the vibrator assembly; the bracket is arranged between the elastic part and the vibrator component; and the damping part comprises a first damping part which is arranged between the elastic part and the bracket.

The utility model discloses a vibrating motor's beneficial effect is: the damping part is arranged between the elastic part and the bracket, so that the damping part is slightly influenced by the temperature change of the coil, the stability of the damping part is improved, the performance stability of the vibration motor is improved, and the service life of the vibration motor is prolonged; and the second damping part increases the damping coefficient of the vibration motor, so that the time for the vibration motor to reach the standstill from the maximum vibration state is shortened, and the performance of the vibration motor is improved.

In addition, the vibration motor according to the present invention may have the following additional features.

According to the utility model discloses an embodiment, the support is formed by partial casing orientation holding intracavity portion bending.

According to the utility model discloses an embodiment, the support is platelike structure, and the support is inserted and is located between elastic component and the vibrator subassembly, and support one end and shells inner wall fixed connection.

According to the utility model discloses an embodiment, the support includes interconnect's diaphragm and riser, diaphragm and shells inner wall fixed connection, and the riser is inserted and is located between elastic component and the vibrator subassembly.

According to the utility model discloses an embodiment, the support sets up two at least, and the support sets up in vibrator subassembly both sides relatively along magnet subassembly direction of vibration.

According to the utility model discloses an embodiment, the casing includes interconnect's first casing and second casing, and support one end fixed connection is in first casing or second casing, and the support other end extends to and holds the intracavity portion, and sets up between oscillator subassembly and elastic component.

According to the utility model discloses an embodiment, the vibrator subassembly includes the quality piece, and the quality piece sets up in magnet subassembly both ends and is connected with the magnet subassembly along magnet subassembly direction of vibration, and elastic component one end and shells inner wall are connected, and the elastic component other end is connected with the quality piece.

According to an embodiment of the present invention, the vibration motor further includes a second damping member, the second damping member being disposed between the bracket and the mass block.

According to the utility model discloses an embodiment, the damping piece includes at least one in the bubble cotton, silica gel, the rubber.

According to the utility model discloses a second aspect provides an electronic equipment, and electronic equipment includes according to the utility model discloses the vibrating motor of first aspect.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is an exploded view of a vibration motor according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an internal structure of the vibration motor provided by an embodiment of the present invention after the second housing is removed.

Fig. 3 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A of fig. 2 according to an embodiment of the present invention.

Wherein the reference numbers are as follows:

1: a vibration motor;

11: a first housing;

12: an elastic member; 121: a first spring plate; 122: a second elastic sheet;

13: a magnet assembly; 131: a first magnet assembly; 132: a second magnet assembly;

14: a mass block; 141: a first mass block; 142: a second mass block;

15: a second housing;

16: a support; 161: a first bracket; 162: a second bracket;

17: a damping member; 171: a first damping member; 172: a second damping member;

18: a washer assembly; 181: a first washer; 182: a second washer;

19: a coil assembly; 191: a coil; 192: and (3) an iron core.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both an up and down orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, the present invention provides a vibration motor 1, which includes: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed inside the shell; the vibrator assembly is arranged in the accommodating cavity and comprises a magnet assembly 13; the stator assembly is arranged in the accommodating cavity and comprises a coil 191, and the coil 191 drives the magnet assembly 13 to vibrate; the elastic piece 12 is arranged at two ends of the vibrator component along the vibration direction of the magnet component 13, one end of the elastic piece 12 is connected with the inner wall of the shell, and the other end of the elastic piece 12 is connected with the vibrator component; a bracket 16, the bracket 16 being disposed between the elastic member 12 and the vibrator component; the damping member 17, the damping member 17 includes a first damping member 171, and the first damping member 171 is disposed between the elastic member 12 and the bracket 16.

The housing includes a first housing 11 and a second housing 15. The first housing 11 is a rectangular parallelepiped box-shaped structure having four side walls and a top wall, and the box-shaped structure is open at the bottom, and the side opposite to the top wall is the bottom opening. The second casing 15 is flat, and the flat second casing 15 is correspondingly disposed at the bottom opening of the first casing 11. Specifically, the first housing 11 is an upper housing, and the second housing 15 is a lower housing. The first housing 11 and the second housing 15 together form a housing chamber. In the present embodiment, the first housing 11 and the second housing 15 are welded. The vibrator assembly, the stator assembly, the elastic member 12, the bracket 16, and the damping member 17 are disposed inside the receiving chamber.

The vibrator assembly includes a magnet assembly 13, a mass 14 and a washer assembly 18. The magnet assembly 13 includes a first magnet assembly 131 and a second magnet assembly 132 disposed parallel to and spaced apart from each other, and the first magnet assembly 131 includes a first center magnet and two first side magnets disposed at both sides of the first center magnet. The first magnet assembly 131 is bonded to the first fixing surface of the first washer 181 using a heat-curable adhesive such as epoxy resin or an anaerobic adhesive. The second magnet assembly 132 includes a second center magnet and two second side magnets disposed on either side of the second center magnet, bonding the second magnet assembly 132 to the first stationary surface of the second washer 182.

The first washer 181 is plate-shaped and comprises a first washer plate and a first washer inner plate. The first washer plate is a material that is easily welded to the mass 14, such as 430 stainless steel, and the first washer inner plate functions as a magnetically conductive plate, using a spcc cold plate. The first washer plate and the first washer inner plate are both plate-shaped, the first washer inner plate is fixed to one side of the first washer plate, and the first washer plate and the first washer inner plate jointly form a first washer 181. The second washer 182 has the same structure as the first washer 181. The first washer 181 includes a first fixing surface and a side surface adjacent to the first fixing surface. The first fixing surface is a surface on a side opposite to the inner wall of the first housing. The second washer 182 includes a second mounting surface and a side surface adjacent the second mounting surface. The second fixing surface is a surface on a side opposite to the inner wall of the first shell. The first washer 181 and the second washer 182 constitute a washer assembly 18.

The first washer 181 and the second washer 182 are both made of magnetic conductive materials, and form a magnetic circuit together with the magnet assembly 13 and the coil assembly 19. The first washer 181 and the second washer 182 concentrate the magnetic flux of the magnet assembly 13, and efficiently flow without leakage, so that the magnetic flux flowing between the magnet assembly 13 and the coil assembly 19 is more efficiently distributed. In addition, the first washer 181 and the second washer 182 can perform a certain weight effect in addition to a function as a part of the magnetic circuit.

The vibrator assembly further includes a mass 14. The mass block 14 can increase the mass of the vibrator assembly, reduce the amplitude of the vibrator assembly, and improve the vibration sense of the vibrator assembly. The mass block 14 is arranged at two ends of the magnet assembly 13 along the vibration direction of the magnet assembly 13 and connected with the magnet assembly 13, one end of the elastic part 12 is connected with the inner wall of the shell, and the other end of the elastic part is connected with the mass block 14. The shape of the mass 14 is not limited, and may be designed into various shapes according to the needs, and in the present embodiment, the shape of the mass 14 is substantially block-shaped. In this embodiment, the number of the mass blocks 14 is two, that is, the mass block 14 includes a first mass block 141 and a second mass block 142. One end of the first mass 141 is welded to a side of the first washer 181, and the other end of the first mass 141 is welded to a side of the second washer 182. One end of the second mass 142 is welded to a side of the first washer 181, and the other end of the second mass 142 is welded to a side of the second washer 182.

The vibration motor 1 further includes an elastic member 12. The elastic member 12 connects the first housing 11 and the vibrator assembly. The elastic members 12 are disposed at both ends of the vibrator assembly in the vibration direction of the magnet assembly 13. The vibrator assembly is suspended inside the receiving chamber by the elastic member 12. The elastic member 12 is an elastic member such as a spring or a spring. In this embodiment, the number of the elastic members 12 is two, that is, the elastic members 12 include a first elastic sheet 121 and a second elastic sheet 122. In this embodiment, the vibrator assembly is suspended inside the accommodating cavity by the first elastic sheet 121 and the second elastic sheet 122.

In some embodiments, the bracket 16 is formed by bending a part of the housing towards the inside of the accommodating cavity, and in particular, may be formed by bending the first housing 11 or the second housing 15 towards the inside of the accommodating cavity, so as to form an opening on the first housing 11 or the second housing 15, the opening is adjacent to the bracket 16, and the bracket 16 and the housing are of a unitary structure.

In some embodiments, the bracket 16 is a separate structure from the housing. The bracket 16 may be a plate-shaped structure, the bracket 16 is inserted between the elastic member 12 and the vibrator assembly, one end of the bracket 16 is fixedly connected with the inner wall of the housing, and the other end of the bracket 16 extends toward the inside of the accommodating cavity.

In some embodiments, the bracket 16 includes a cross plate and a vertical plate that are connected to each other, preferably perpendicular to each other. The transverse plate is fixedly connected with the inner wall of the housing, specifically, the transverse plate may be fixedly connected with the first housing 11 or the second housing 15, the vertical plate is inserted between the elastic member 12 and the vibrator component, the transverse plate may be welded with the first housing 11 or the second housing 15, and in this embodiment, the bracket 16 and the housing are in a split structure.

Preferably, at least two brackets 16 are provided, and the brackets 16 are oppositely provided on both sides of the vibrator assembly in the vibration direction of the magnet assembly 13. In this embodiment, the number of the brackets 16 is two, i.e., a first bracket 161 and a second bracket 162, and the first bracket 161 and the second bracket 162 are disposed on both sides of the vibrator assembly.

In this embodiment, the housing includes a first housing 11 and a second housing 15 connected to each other, one end of the bracket 16 may be fixedly connected to the first housing 11 or the second housing 15, and the other end of the bracket 16 extends to the inside of the receiving cavity and is disposed between the vibrator assembly and the elastic member 12. In addition, both ends of the bracket 16 may be fixedly connected to the first housing 11 and the second housing 15, respectively, to improve the connection stability of the bracket 16.

In some embodiments, the damping member 17 further includes a second damping member 172, the second damping member 172 being disposed between the support 16 and the mass 14. In the embodiment shown in fig. 1, 2 and 3, two second damping members 172 are provided, two damping members 172 are provided on both sides of the magnet assembly 13 in the vibration direction of the magnet assembly 13, and one end of the second damping member 172 is connected to the mass 14 and the other end is connected to the bracket 16. The second damper member 172 is provided to improve the performance of the vibration motor 1, and the second damper member 13 is provided to further increase the damping coefficient of the vibration motor and increase the response speed of the vibration motor based on the application of the first damper member 171.

In some embodiments, a surface of the first mass 141 contacting the second damping member 172 may be provided with a recess, so that the second damping member 172 is accommodated in the recess, so that the space arrangement in the accommodating cavity is more reasonable, and the space utilization rate of the accommodating cavity is improved.

The coil assembly 19 is configured to be energized with an electrical signal to generate a magnetic field. The magnet assembly 13 is configured to produce vibrations in response to the force of the energized magnetic field. The coil assembly 19 includes a core 192 and a coil 191 wound around the core 192. The coil assembly 19 is fixed to the second housing 15 through the coil 191. The coil assembly 19 is disposed between the first magnet assembly 131 and the second magnet assembly 132 which are disposed at intervals, and is disposed at intervals to both the first magnet assembly 131 and the second magnet assembly 132, i.e., there is a vibration gap between the coil assembly 19 and both the first magnet assembly 131 and the second magnet assembly 132. The magnet assembly 13 is capable of reciprocating in the axial direction of the coil 191 by the coil 191.

The coil block 19 further includes an FPCB, one portion of which is connected to the coil 191 and the other portion of which is used for connection to an external circuit. The FPCB is a flexible circuit board having characteristics of high wiring density, light weight, thin thickness, and good bendability. Can set up the portion of bending as required on the FPCB in order to conveniently carry out circuit connection with external equipment. The coil assembly 19 generates a magnetic field by applying an electric signal to the coil 191 through the FPCB.

The utility model discloses a vibrating motor 1's beneficial effect is: the first damping member 171 and the second damping member 172 are arranged between the elastic member 12 and the support 16, the support 16 and the mass block 14, and the first damping member 171 and the second damping member 172 are arranged at intervals with the coil 191, so that the damping member 17 is less affected by the temperature change of the coil 191, the stability of the damping member 17 is improved, the performance stability of the vibration motor 1 is improved, and the service life of the vibration motor is prolonged; and second, the damping member 17 increases the damping coefficient of the vibration motor 1, so that the time for the vibration motor 1 to come to rest from the maximum vibration state is shortened, and the performance of the vibration motor 1 is improved.

Another aspect of the present invention further provides an electronic device, which includes the vibration motor 1 as described above. The electronic apparatus includes the vibration motor 1 according to any of the above embodiments. The electronic device may be a mobile phone, a tablet computer or other electronic devices, which are not illustrated herein.

The above describes in detail an optional implementation manner of the embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manner, and in the technical concept scope of the embodiments of the present invention, it may be right to perform various simple modifications on the technical solution of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vibration motor, characterized in that the vibration motor comprises:

the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed inside the shell;

the vibrator assembly is arranged in the accommodating cavity and comprises a magnet assembly;

the stator assembly is arranged in the accommodating cavity and comprises a coil, and the coil drives the magnet assembly to vibrate;

the elastic pieces are arranged at two ends of the vibrator assembly along the vibration direction of the magnet assembly, one end of each elastic piece is connected with the inner wall of the shell, and the other end of each elastic piece is connected with the vibrator assembly;

a bracket disposed between the elastic member and the vibrator component; and

the damping piece, the damping piece includes first damping piece, first damping piece set up in the elastic component with between the support.

2. A vibration motor according to claim 1, wherein said bracket is formed by bending a part of said housing toward an inside of said housing chamber.

3. A vibration motor as claimed in claim 1, wherein said bracket is a plate-like structure, said bracket is interposed between said elastic member and said vibrator assembly, and one end of said bracket is fixedly connected to said inner wall of said housing.

4. A vibration motor as claimed in claim 1, wherein said bracket includes a horizontal plate and a vertical plate connected to each other, said horizontal plate being fixedly connected to said inner wall of said housing, said vertical plate being interposed between said elastic member and said vibrator assembly.

5. The vibration motor according to claim 1, wherein the number of the brackets is at least two, and the brackets are oppositely disposed on both sides of the vibrator assembly in the vibration direction of the magnet assembly.

6. The vibration motor of claim 1, wherein the housing comprises a first housing and a second housing connected to each other, one end of the bracket is fixedly connected to the first housing or the second housing, and the other end of the bracket extends into the accommodating chamber and is disposed between the vibrator assembly and the elastic member.

7. The vibration motor of claim 1, wherein the vibrator assembly includes a mass block, the mass block is disposed at both ends of the magnet assembly in a vibration direction of the magnet assembly and connected to the magnet assembly, one end of the elastic member is connected to the inner wall of the housing, and the other end of the elastic member is connected to the mass block.

8. A vibration motor as claimed in claim 7, further comprising a second damping member disposed between said bracket and said mass.

9. A vibratory motor as set forth in claim 1 wherein said damping member comprises at least one of foam, silicone, and rubber.

10. An electronic device, characterized in that the electronic device comprises a vibration motor according to any one of claims 1-9.