CN212392790U

CN212392790U - Vibration motor

Info

Publication number: CN212392790U
Application number: CN201922386881.6U
Authority: CN
Inventors: 凌芳华; 浦晓峰; 邵焱; 周晓荣
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2021-01-22
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a vibration motor, the vibration motor includes the casing that has the opening, accommodate in the casing and with the roof looks spaced oscillator subassembly of casing, connect the oscillator subassembly with the elastic component of casing, closing cap the open-ended base plate and set up in the base plate is close to oscillator subassembly one side and with the drive assembly of oscillator subassembly looks spaced, drive assembly includes the drive coil; the vibration motor is further provided with limiting assemblies, the limiting assemblies are arranged on two opposite sides of the first direction of the driving coil, are spaced from the vibrator assemblies and are fixedly connected with the substrate, and the first direction is perpendicular to the vibration direction of the vibrator assemblies.

Description

Vibration motor

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electronic equipment technical field especially relates to a vibrating motor.

[ background of the invention ]

With the development of electronic technology, portable consumer electronic products are more and more sought after by people, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices, and the like, generally use vibration motors for system feedback, such as incoming call prompt, information prompt, navigation prompt, vibration feedback of game consoles, and the like. Such a wide application requires a vibration motor having high performance and long service life.

The vibration motor generally includes a housing having a receiving space, a vibrator assembly received in the receiving space, an elastic member connecting the housing and the vibrator assembly, and a driving coil for driving the vibrator assembly. The vibrator assembly is driven by the driving coil to reciprocate and elastically displace in the shell to generate vibration.

In practical applications, it is desirable that the vibrator assembly can generate a sufficient amount of vibration, and therefore, for example, it is a hot topic that a person skilled in the art is studying to improve the driving force of the vibration motor and thus the vibration performance of the vibration motor.

[ Utility model ] content

The purpose of the utility model is to disclose a vibrating motor.

The utility model discloses an aim at adopts following technical scheme to realize, provides a vibrating motor, vibrating motor includes: the vibration motor comprises a shell with an opening, a vibrator assembly accommodated in the shell and spaced from a top plate of the shell, an elastic piece connected with the vibrator assembly and the shell, a base plate covering the opening, and a driving assembly arranged on one side of the base plate close to the vibrator assembly and spaced from the vibrator assembly, wherein the driving assembly comprises a driving coil; the vibration motor is further provided with limiting assemblies, the limiting assemblies are arranged on two opposite sides of the first direction of the driving coil, are spaced from the vibrator assemblies and are fixedly connected with the substrate, and the first direction is perpendicular to the vibration direction of the vibrator assemblies.

Preferably, the limiting assembly includes a first limiting member and a second limiting member that are disposed at two opposite sides of the driving coil in the first direction at an interval, wherein the first limiting member is provided with a first arc-shaped limiting portion, the second limiting member is provided with a second arc-shaped limiting portion, and the driving coil is disposed between the first arc-shaped limiting portion and the second arc-shaped limiting portion.

Preferably, the vibrator component includes a weight member and a magnetic member, wherein the weight member is provided with a through hole, and the magnetic member is accommodated in the through hole.

Preferably, the vibrator assembly further includes a magnetic conductive plate, a groove communicated with the through hole is formed in one side of the counterweight member, which is far away from the driving coil, and the magnetic conductive plate is accommodated in the groove.

Preferably, the number of the elastic members is two, and the two elastic members are arranged on two opposite sides of the vibration direction of the vibrator assembly in a central symmetry manner and are connected with the vibrator assembly and the housing.

Preferably, the elastic member includes a first fixing portion, a second fixing portion, and an elastic deformation portion connecting the first fixing portion and the second fixing portion, wherein the first fixing portion is connected to the housing, and the second fixing portion is connected to the vibrator assembly.

Preferably, the elastic deformation portion comprises at least two elastic arms and a bending portion connecting two adjacent elastic arms.

Preferably, a buffer is disposed between the first fixing portion and the second fixing portion.

Preferably, the driving assembly further includes a driving flat cable disposed on one side of the substrate close to the driving coil and electrically connected to the driving coil.

Compared with the prior art, the utility model provides a vibrating motor sets up spacing subassembly through the direction both sides at the vibration direction of the perpendicular to vibrator subassembly of drive coil to can also make the drive coil can do as big as possible in the direction size of the vibration direction of perpendicular to vibrator subassembly when can effectively protect the drive coil, promote drive power.

[ description of the drawings ]

Fig. 1 is a schematic view of a three-dimensional structure of a vibration motor provided by the present invention;

fig. 2 is a schematic view of an explosion structure of the vibration motor provided by the present invention;

fig. 3 is a schematic view of a top view structure of the vibration motor provided by the present invention;

FIG. 4 is a schematic cross-sectional view taken along the line A-A in FIG. 3;

FIG. 5 is an enlarged schematic view of FIG. 4 at A;

FIG. 6 is a schematic view of a structure of a vibration motor with a substrate, a driving assembly and a limiting assembly;

fig. 7 is an exploded view of a vibrator assembly of a vibration motor;

fig. 8 is a perspective view illustrating an elastic member of the vibration motor;

fig. 9 is a structural view illustrating a vibrator assembly, an elastic member, and a case of the vibration motor in cooperation.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 9, a vibration motor 1 includes a housing 10 having an opening 101, a vibrator assembly 20 housed in the housing 10 and spaced from a top plate 102 of the housing 10 to form a first gap 104, an elastic member 30 connecting the vibrator assembly 20 and the housing 10, a substrate 40 covering the opening 101, and a driving assembly 50 disposed on a side of the substrate 40 close to the vibrator assembly 20 and spaced from the vibrator assembly 20 to form a second gap 105. The driving assembly 50 includes a driving coil 501, and the vibration motor 1 is further provided with a limiting assembly 60, the limiting assembly 60 is disposed on two opposite sides of the driving coil 501 in a first direction, and is disposed at an interval with the vibrator assembly 20 and fixedly connected to the substrate 40, wherein the first direction is a direction perpendicular to a vibration direction of the vibrator assembly 20, as shown in fig. 6, the vibration direction of the vibrator assembly 20 is an X-axis direction, and then the limiting assembly 60 is disposed on two opposite sides of the driving coil 501 in a Y-axis direction.

The limiting component 60 is arranged in the direction, perpendicular to the vibration direction of the vibrator component 20, of the driving coil 501, so that the driving coil 501 can be effectively protected, the size, corresponding to the direction perpendicular to the vibration direction of the vibrator component 20, of the driving coil 501 can be made as large as possible, and the driving force is improved.

In some embodiments, the limiting assembly 60 includes a first limiting member 601 and a second limiting member 602 disposed at two opposite sides of the driving coil 501 in the first direction at an interval, wherein the first limiting member 601 is provided with a first arc-shaped limiting portion 6011, the second limiting member 602 is provided with a second arc-shaped limiting portion 6021, and the driving coil 501 is disposed between the first arc-shaped limiting portion 6011 and the second arc-shaped limiting portion 6021, so that the size of the driving coil 501 in the Y direction can be made as large as possible, as shown in fig. 6.

Preferably, the thickness of each of the first position-limiting portion 601 and the second position-limiting portion 602 is greater than the thickness of the driving coil 501.

In some embodiments, the vibrator assembly 20 includes a weight member 201 and a magnetic member 202, wherein the weight member 201 has a through hole 2011, and the magnetic member 202 is received in the through hole 2011, as shown in fig. 7.

Preferably, the magnetic member 202 is a permanent magnet, the number of the through holes 2011 is two, and the number of the magnetic members 202 corresponding to the through holes 2011 is also two.

In some embodiments, the vibrator assembly 20 further includes a magnetic conductive plate 203, a groove 2012 communicated with the through hole 2011 is formed on a side of the weight 201 away from the driving coil 501, and the magnetic conductive plate 203 is accommodated in the groove 2012.

In some embodiments, the elastic members 30 are two and are disposed at opposite sides of the vibration direction of the vibrator assembly 20 in a central symmetry, and connect the vibrator assembly 20 and the case 10.

Each elastic member 30 includes a first fixing portion 301, a second fixing portion 302, and an elastic deformation portion 303 connecting the first fixing portion 301 and the second fixing portion 302, wherein the first fixing portion 301 is connected to the housing 10, and the second fixing portion 302 is connected to the vibrator component 20, and the elastic deformation portion 303 is a V-shaped spring, as shown in fig. 8.

Under the driving of external force, the second fixing portion 302 is displaced along with the vibration of the vibrator assembly 20, so that the elastic deformation portion 303 is elastically deformed to provide restoring force, and the vibrator reciprocates along the vibration direction.

Specifically, the elastic deformation portion 303 includes at least two elastic arms 3031 and a bent portion 3032 connecting two adjacent elastic arms 3031, and the bent portion 3032 is a semi-circular transition structure.

It is understood that the first fixing portion 301 may be connected to the housing 10 in such a manner that the first fixing portion 301 is connected to the side wall 103 of the housing 10. The second fixing portion 302 may be connected to the vibrator assembly 20 in such a manner that the second fixing portion 302 is connected to a side wall of the weight member 201, as shown in fig. 9.

The connection manner of the first fixing portion 301, the second fixing portion 302 and the elastic deformation portion 303 of the elastic element 30 may be formed by welding or may be formed integrally, which is not limited herein.

In some embodiments, a buffer 305 is disposed between the first fixing portion 301 and the second fixing portion 302.

In some embodiments, the driving assembly 50 further includes a driving flat cable 502, and the driving flat cable 502 is disposed on one side of the substrate 40 close to the driving coil 501 and electrically connected to the driving coil 501.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A vibration motor characterized by: the vibration motor comprises a shell with an opening, a vibrator assembly accommodated in the shell and spaced from a top plate of the shell, an elastic piece connected with the vibrator assembly and the shell, a base plate covering the opening, and a driving assembly arranged on one side of the base plate close to the vibrator assembly and spaced from the vibrator assembly, wherein the driving assembly comprises a driving coil;

the vibration motor is further provided with limiting assemblies, the limiting assemblies are arranged on two opposite sides of the first direction of the driving coil, are spaced from the vibrator assemblies and are fixedly connected with the substrate, and the first direction is perpendicular to the vibration direction of the vibrator assemblies.

2. The vibration motor according to claim 1, wherein: the limiting assembly comprises a first limiting part and a second limiting part which are arranged on two opposite sides of the driving coil in the first direction at intervals, wherein the first limiting part is provided with a first arc-shaped limiting part, the second limiting part is provided with a second arc-shaped limiting part, and the driving coil is arranged between the first arc-shaped limiting part and the second arc-shaped limiting part.

3. The vibration motor according to claim 1, wherein: the vibrator component comprises a weight piece and a magnetic piece, wherein the weight piece is provided with a through hole, and the magnetic piece is contained in the through hole.

4. The vibration motor according to claim 3, wherein: the vibrator assembly further comprises a magnetic conduction plate, a groove communicated with the through hole is formed in one side, away from the driving coil, of the counterweight piece, and the magnetic conduction plate is contained in the groove.

5. The vibration motor according to claim 1, wherein: the two elastic pieces are arranged on two opposite sides of the vibration direction of the vibrator component in a centrosymmetric mode and are connected with the vibrator component and the shell.

6. The vibration motor according to claim 5, wherein: the elastic piece comprises a first fixing part, a second fixing part and an elastic deformation part which is connected with the first fixing part and the second fixing part, wherein the first fixing part is connected with the shell, and the second fixing part is connected with the vibrator component.

7. The vibration motor according to claim 6, wherein: the elastic deformation part comprises at least two elastic arms and a bending part for connecting the two adjacent elastic arms.

8. The vibration motor according to claim 6, wherein: a buffer is arranged between the first fixing part and the second fixing part.

9. The vibration motor according to claim 1, wherein: the driving assembly further comprises a driving flat cable, and the driving flat cable is arranged on one side, close to the driving coil, of the substrate and is electrically connected with the driving coil.