CN218648705U

CN218648705U - Vibration motor and electronic device

Info

Publication number: CN218648705U
Application number: CN202222252069.6U
Authority: CN
Inventors: 修艺栩; 史德璋; 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 device including the same belong to the technical field of linear motors, and the vibration motor comprises: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed in the shell; the stator assembly is arranged in the accommodating cavity and at least comprises a coil; the vibrator assembly is arranged in the accommodating cavity and comprises a magnetic assembly and a mass block connected with the magnetic assembly, and the vibrator assembly can vibrate under the action of the coil; the support is arranged on the inner wall of the shell, is arranged between the coil and the mass block along the vibration direction of the vibrator assembly and is arranged at an interval with the coil; the damping piece, the damping piece set up in the support with between the quality piece, vibrating motor can reduce the influence of high temperature to the damping piece through setting up the support, promotes the stability of damping piece, and then promotes vibrating motor's stability, prolongs vibrating motor's life.

Description

Vibration motor and electronic device

Technical Field

The utility model belongs to the technical field of the linear motor, specifically, relate to a vibrating motor, still relate to an electronic equipment.

Background

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

The linear motor has the characteristics of quick response, excellent vibration sense and the like, and is widely applied to electronic equipment such as mobile phones, and in order to provide better experience for users, the linear motor is usually provided with an ultra-high voltage and short-time excitation signal, so that the linear motor can reach the maximum vibration state within the shortest period. However, under the excitation of high voltage, the temperature of the coil will increase sharply, so that higher requirements are made on the structure and reliability of the motor.

The existing linear motor product needs to be improved because the foam is in direct contact with the coil, the temperature of the coil is rapidly increased under the excitation of high voltage, if the linear motor product works for a long time, the temperature is even increased to 180 ℃ or even higher, and the high temperature can cause the size of the foam to be reduced or even the foam to be melted.

SUMMERY OF THE UTILITY MODEL

To the defect that above-mentioned prior art exists, the utility model provides a vibrating motor has solved at least because the rising of coil temperature leads to the technical problem of the unable normal work of damping piece.

A first aspect of the present invention provides a vibration motor, which includes: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed in the shell; the stator assembly is arranged in the accommodating cavity and at least comprises a coil; the vibrator assembly is arranged in the accommodating cavity and comprises a magnetic assembly and a mass block connected with the magnetic assembly, and the vibrator assembly can vibrate under the action of the coil; the support is arranged on the inner wall of the shell, is arranged between the coil and the mass block along the vibration direction of the vibrator assembly and is arranged at an interval with the coil; a damping member disposed between the bracket and the mass.

The utility model discloses a vibrating motor, support and coil interval set up, and the damping piece sets up and deviates from coil one side in the support, and sets up between support and quality piece because the damping piece receives coil temperature variation to influence for a short time to protect the damping piece, promoted vibrating motor's stability and prolonged vibrating motor's life.

In addition, according to the present invention, the vibration motor may further have the following additional technical features:

in some embodiments of the present invention, the bracket has a vertical plate and a horizontal plate connected to each other, the foam is connected to the vertical plate and/or the horizontal plate, the bracket is connected to the housing through the horizontal plate, wherein the coil and the damping member are respectively disposed on two sides of the vertical plate.

In some embodiments of the present invention, the support comprises a transverse plate, a lower panel and a connecting plate, the transverse plate is connected to the vertical plate of the lower panel, the damping member is disposed in the transverse plate, the lower panel is connected to the space enclosed by the vertical plate, the transverse plate is connected to the lower panel, and the damping member is disposed on two sides of the vertical plate.

In some embodiments of the present invention, the bracket is formed by bending a part of the housing toward the inside of the accommodating chamber.

In some embodiments of the present invention, the bracket is integrally formed with the inner wall of the housing.

In some embodiments of the present invention, the mass block faces one end of the coil and has a stepped structure, and the damping member is formed with a stepped surface that is matched with the stepped structure.

In some embodiments of the present invention, the damping member is at least one of foam, silica gel or rubber.

In some embodiments of the present invention, the housing includes an upper housing and a lower housing that are fastened to each other, the stator assembly is connected to the lower housing, and the vibrator assembly is elastically connected to the upper housing.

In some embodiments of the present invention, the stator assembly further includes an iron core, the coil is wound on the iron core, the coil is fixedly connected to the lower housing, and the axis direction of the coil is parallel to the vibration direction of the vibrator assembly.

In a second aspect of the present invention, there is provided an electronic device, which includes any one of the vibration motors described above.

Drawings

Various additional 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 parts are designated with like reference numerals throughout the drawings.

In the drawings:

fig. 1 is an exploded view of one embodiment of a vibration motor of the present invention;

fig. 2A, 2B and 2C are schematic structural views of a bracket and a damping member of a vibration motor according to the present invention;

fig. 3 is a perspective view of an embodiment of a vibration motor according to the present invention;

fig. 4 is a sectional view of an embodiment of a vibration motor according to the present invention.

In the drawings, the reference numerals denote the following:

100 a vibration motor;

110 a housing; 112 an upper shell; 113 a lower housing;

120 a stator assembly; 121 coils; 122 a core;

130 a vibrator assembly;

131 a magnetic component; 1311 a first magnetic component; 1312 a second magnetic component;

132 a mass; 1321 a first mass; 1322 a second mass;

133 washer assembly; 1331 a first washer; 1332 a second washer;

140 a support; 141 riser(s); 142 a transverse plate; 143 a lower panel;

150 a damping member; 151 a first damping member; 152 a second damping member; 153 step surfaces;

160 an elastic connector;

170FPCB。

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 by 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," "includes," "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.

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 "at 8230; \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1, in an embodiment of the present invention, a vibration motor 100 includes a housing 110, a stator assembly 120, a vibrator assembly 130, a bracket 140, and a damping member 150, wherein a receiving cavity is formed in the housing 110, the stator assembly 120 and the vibrator assembly 130 are both disposed in the receiving cavity, and the vibrator assembly 130 can vibrate under the action of the stator assembly 120, so that the entire vibration motor vibrates; the vibrator assembly 130 includes a coil 121, and the coil 121 is spaced apart from an outer side of the bracket 140; the damping member 150 is disposed on the bracket 140 and connected to the mass 132 of the vibrator assembly 130.

In the present embodiment, since the coil 121 and the bracket 140 are spaced apart from each other, even if the temperature of the coil 121 is sharply increased under the excitation of a high voltage, the temperature of the damping member 150, which is provided on the bracket 140, of the bracket 140 is not excessively rapidly increased, so that the damping member 150 is protected, and the stability of the damping member 150 is improved.

It is preferable that the coil 121 is spaced apart from the bracket 140 and the damping member 150 is disposed at a side of the bracket 140 away from the coil 121 such that the coil 121 is relatively distant from the damping member 150 even if the heat of the high temperature coil 121 is diffused to the surroundings, and the heat is not directly transferred to the damping member 150 due to the spacing of the bracket 140, thereby protecting the damping member 150.

When the coil 121 and the bracket 140 are spaced by an air medium, the heat of the high-temperature coil 121 is firstly transferred to the bracket 140 through the air medium, and then transferred to the damping member 150 through the bracket 140, and the damping member 150 can only be affected by partial heat due to the obstruction of different media; even if the long-time work of vibrating motor 100, damping piece 150 wherein also can not receive great influence in the short time, consequently, the utility model discloses a vibrating motor 100 has solved because coil 121 receives the high voltage excitation, perhaps coil 121 during long-time work, and the coil 121 of high temperature is constantly outside to transmit the heat, makes damping piece 150 receive too much heat influence and the technical problem of unable normal work.

The bracket 140 of the vibration motor of the present invention may have different structural forms, in which fig. 2A, 2B and 2C respectively show preferred embodiments, and different forms of brackets are provided on the inner wall of the housing 110.

As shown in fig. 2A, the bracket 140 of the vibration motor has a vertical plate 141 and a horizontal plate 142, wherein the damping member 150 is connected to the vertical plate 141 or the horizontal plate 142, the bracket 140 is connected to the housing through the horizontal plate 142, and wherein the coil 121 and the damping member 150 are respectively disposed on both sides of the vertical plate 141.

In another embodiment, the damping members 150 are connected to the vertical plates 141 and the horizontal plates 142 at the same time, so that the damping members 150 are connected to the bracket in different directions, and the connection is firmer; this arrangement also allows the carrier 140 to resist heat transfer to the damping member 150 from at least two directions.

As shown in fig. 2B, the bracket 140 of the vibration motor has risers 141 and a lower panel 143, the dampers 150 are connected to the risers 141 or the lower panel 143, and the bracket 140 is connected to the casing 110 through the lower panel 143, wherein the coil 121 and the dampers 150 are respectively disposed on both sides of the risers 141.

In another embodiment, wherein damping member 150 is attached to both riser 141 and lower panel 143, damping member 150 is attached to bracket 140 in different orientations, making the attachment more secure; likewise, this arrangement allows the bracket 140 to resist heat transfer to the damping member 150 from at least two directions.

As shown in fig. 2C, the bracket 140 of the vibration motor has a vertical plate 141, a lower plate 143, and a horizontal plate 142, the damping member 150 is disposed in a space surrounded by the vertical plate 141, the lower plate 143, and the horizontal plate 142, the horizontal plate 142 and the lower plate 143 of the bracket 140 are respectively connected to the housing, wherein the coil 121 and the damping member 150 are respectively disposed on both sides of the vertical plate 141; in this embodiment, the bracket 140 surrounds the damping member 150 from three directions, so that more heat can be isolated outside the bracket 140, and the damping member 150 receives less heat.

In some embodiments of the present invention, the bracket 140 may be formed by bending a portion of the housing 110 toward the inside of the receiving chamber. Specifically, the bracket 140 may be formed by bending the upper casing 112 or the lower casing 113 toward the inside of the accommodating cavity, and an opening is formed in the upper casing 112 or the lower casing 113, the opening is adjacent to the bracket 140, and the bracket 140 and the casing 110 are integrated. Compare in that support 140 and casing 110 are the components of a whole that can function independently structure, through casing 110 towards holding the inside bending type of intracavity and forming support 140, can avoid support 140 to take place to become flexible because vibration or firm the taking place of connecting portion when using, and then reinforcing support 140 and casing 110's stability of being connected.

In some embodiments of the present invention, the bracket 140 is integrally formed with the inner wall of the housing 110 by stamping, such as the bracket 140 shown in fig. 2A, 2B and 2C, so that the bracket 140 and the housing 110 are integrally formed in an integral structure by an integral stamping process, thereby making the connection between the bracket 140 and the housing 110 more secure.

In the above different embodiments, the bracket 140 is spaced from the coil 121, so that the bracket 140 can prevent part of the heat from being transferred to the damping member 150, and under such an arrangement condition, the damping member 150 may be more selected, for example, the damping member 150 may be made of any one of foam, silicone, and rubber, or two or three of foam, silicone, and rubber may be used as the material of the damping member 150.

Referring to fig. 2A, 2B and 2C, in some embodiments of the present invention, the damping member 150 is formed with a step surface 153 that is engaged with the mass 132, so that the damping member 150 and the mass 132 can be better combined and stably connected even under a vibration condition.

In some embodiments of the present invention, the housing 110 includes an upper housing 112 and a lower housing 113 that are relatively movable, the stator assembly 120 is connected to the lower housing 113, and the vibrator assembly 130 is connected to the upper housing 112.

In some embodiments of the present invention, the vibration motor includes an elastic connection member 160, and the vibrator assembly 130 is integrated with the upper case 112 or the lower case 113 through the elastic connection member 160 and is suspended in the case 110.

Referring to fig. 1, the vibration motor 100 of the present invention further includes a magnetic assembly 131, the magnetic assembly 131 includes a first magnetic assembly 1311 and a second magnetic assembly 1312, and the first magnetic assembly 1311 and the second magnetic assembly 1312 are respectively disposed at two sides of the stator assembly 120; the vibration motor 100 further comprises a washer assembly 133, wherein the washer assembly 133 comprises a first washer 1331 and a second washer 1332, and the first washer 1331 and the second washer 1332 are both made of magnetic conductive materials and form a magnetic circuit together with the magnet assembly 131.

The first washer 1331 and the second washer 1332 make the magnetic flux of the magnet assembly 131 more concentrated, not leaked, and capable of flowing efficiently, so that the magnetic flux is more effectively distributed between the magnet assembly 131 and the coil 121; the first washer 1331 and the second washer 1332 may have not only a function of a partial magnetic circuit but also a certain weight effect.

In one embodiment, the first washer 1331 and the second washer 1332 are arranged at intervals and oppositely, the first washer 1331 is plate-shaped and comprises a first washer plate and a first washer inner plate; similarly, the second washer 1332 may be plate-shaped, including a second washer plate and a second washer inner plate; the first washer plate and the second washer plate are made of materials which are easy to weld with the mass block, such as 430 stainless steel; the first washer and the second washer are magnetic conductive, and a spcc cold plate can be adopted.

In an embodiment, the first washer plate and the first washer inner plate of the first washer may both be 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 together form a first washer 1331; similarly, the second washer plate and the second washer inner plate of the second washer may both be plate-shaped, and the second washer inner plate is fixed to one side of the second washer plate, and the two together form the second washer 1332.

In one embodiment, the first washer 1331 includes a first securing surface and a side surface adjacent to the first securing surface, the first securing surface being a surface distal from the side wall of the housing; the second washer 1332 includes a second fixing surface and a side surface adjacent to the second fixing surface, and the second fixing surface is a surface opposite to the side wall of the housing.

The magnet assembly 131 of the vibration motor of the present invention includes a first magnet assembly 1311 and a second magnet assembly 1312 arranged in parallel and spaced apart from each other. The first magnet assembly 1311 includes a first center magnet and two first side magnets disposed at both sides of the first center magnet; the second magnet assembly 1312 includes a second center magnet and two second side magnets disposed on both sides of the second center magnet.

In one embodiment, the first magnet assembly 1311 may be bonded to the first mounting surface of the first washer 1331 and the second magnet assembly 1312 may be bonded to the second mounting surface of the second washer 1332 using a heat-curable adhesive such as epoxy or an anaerobic adhesive.

In the vibrator assembly of the vibration motor of the present invention, the overall mass of the vibrator assembly can be increased by providing the mass block 132, and the vibration sense of the vibrator assembly is improved.

The shape of the mass block 132 is not limited, and the mass block 132 can be designed into various shapes according to requirements, and the shape of the mass block 132 is approximately blocky; the number of the mass blocks is at least one.

In one embodiment, the number of the masses 132 in the vibrator assembly is two, and the masses 132 include a first mass 1321 and a second mass 1322.

In an embodiment, one end of the first mass 1321 is welded to the side of the first washer 1331, and the other end of the first mass 1321 is welded to the side of the second washer 1332; one end of the second mass 1322 is welded to a side of the first washer 1331, and the other end of the second mass 1322 is welded to a side of the second washer 1332.

In some embodiments of the present invention, the stator assembly 120 includes a coil 121 and an iron core 122, the coil 121 is wound on the iron core 122, the coil 121 is fixedly connected to the lower housing 113, and an axial direction of the coil 121 is parallel to a vibration direction of the vibrator assembly 130. The iron core 122 wound around the coil 121 can enhance the force strength of the energized coil 121 in the magnetic field of the magnet assembly 131, thereby increasing the vibration inductance of the vibrator assembly 130. Specifically, the coil 121 is disposed between the first and

second magnet assemblies

1311, 1312, which are spaced apart, and is spaced apart from both the first and

second magnet assemblies

1311, 1312. During the operation of the vibration motor 100, since the stator assembly 120 is fixedly connected to the housing 110, and the vibrator assembly 130 is elastically connected to the housing 110, the vibrator assembly 130 vibrates under the driving of the stator assembly 120.

The vibration motor of the present invention may further include an FPCB70, a portion of the FPCB170 being connected to the coil, and another portion of the FPCB170 being for connection to an external circuit; the FPCB170 is a flexible circuit board having characteristics of high wiring density, light weight, thin thickness, and good bendability; a bending part can be arranged on the FPCB170 as required to facilitate circuit connection with an external device; an electrical signal can be applied to coil 121 via FPCB170, which in turn enables coil 121 to generate a magnetic field.

Referring to fig. 3 and 4, in an embodiment of the present invention, the vibration motor 100 includes a first mass block 1321 and a second mass block 1322, which are respectively disposed at both sides of the stator assembly 120, and the vibration motor 100 further includes a bracket 140 and a damping member 150 structure disposed at both sides of the stator assembly 120, in which a first damping member 151 and a second damping member 152 are disposed; when the bracket 140 and the damping member 150 are disposed on two sides of the stator assembly 120, a large damping effect may be provided for the vibration motor 100, and product performance may be improved.

The utility model discloses a coil 121 and iron core 122 are kept away from to vibrating motor 100's damping piece 150 and support 140 thereof, receive coil 121 temperature variation's influence less, have protected the damping piece structure, have promoted damping piece 150's stability, and then have promoted whole vibrating motor 100's stability, can also prolong vibrating motor 100's life.

The utility model discloses a vibrating motor, when being applied to electronic product as the motor, can satisfy the motor under the high pressure condition, and the work under the harsh condition of long-time work, consequently, strengthened the life of motor under adverse circumstances.

Another aspect of the present invention further provides an electronic device, which includes the vibration motor 100 as described above. The electronic device has the vibration horse 100 according to any one 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 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 vibratory motor, comprising:

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

the stator assembly is arranged in the accommodating cavity and at least comprises a coil;

the vibrator assembly is arranged in the accommodating cavity and comprises a magnetic assembly and a mass block connected with the magnetic assembly, and the vibrator assembly can vibrate under the action of the coil;

the support is arranged on the inner wall of the shell, is arranged between the coil and the mass block along the vibration direction of the vibrator assembly and is arranged at an interval with the coil;

a damping member disposed between the bracket and the mass.

2. A vibration motor as claimed in claim 1, wherein said bracket has a vertical plate and a horizontal plate connected to each other, said damper is connected to said vertical plate and/or said horizontal plate, said bracket is connected to said housing through said horizontal plate, and said coil and said damper are provided on both sides of said vertical plate, respectively.

3. The vibration motor of claim 1, wherein the bracket comprises a transverse plate, a lower plate and a vertical plate connecting the transverse plate and the lower plate, the damping member is disposed in a space surrounded by the transverse plate, the lower plate and the vertical plate, the transverse plate and the lower plate are respectively connected to the housing, and the coil and the damping member are respectively disposed on two sides of the vertical plate.

4. 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.

5. The vibration motor of claim 1, wherein said bracket is integrally press-molded with said housing inner wall.

6. A vibration motor as claimed in claim 1, wherein an end of said mass facing said coil has a stepped structure, and said damper is formed with a stepped surface to be fitted to said stepped structure.

7. A vibration motor as claimed in any one of claims 1 to 6, wherein said damping member is at least one of foam, silicone or rubber.

8. The vibration motor as claimed in any one of claims 1 to 6, wherein the housing comprises an upper housing and a lower housing which are snap-fitted to each other, the stator assembly is coupled to the lower housing, and the vibrator assembly is elastically coupled to the upper housing.

9. The vibration motor of claim 8, wherein the stator assembly further comprises an iron core, the coil is wound on the iron core, the coil is fixedly connected with the lower housing, and an axial direction of the coil is parallel to a vibration direction of the vibrator assembly.

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