CN110048579B

CN110048579B - Vibration motor

Info

Publication number: CN110048579B
Application number: CN201910386953.9A
Authority: CN
Inventors: 浦晓峰; 黄兴志; 凌芳华
Original assignee: AAC Optoelectronic Changzhou Co Ltd
Current assignee: AAC Optoelectronic Changzhou Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2021-01-19
Anticipated expiration: 2039-05-10
Also published as: WO2020227967A1; CN110048579A

Abstract

The invention provides a vibrating motor, wherein an elastic supporting piece comprises a first fixing part fixed on a shell, a second fixing part fixed on the shell and arranged at an interval with the first fixing part, and an elastic arm connected between the first fixing part and the second fixing part, wherein the elastic arm comprises an extension arm connected and fixed with a vibrating piece. This elastic support piece is fixed with the casing through first fixed part and second fixed part, and is fixed through extension arm and vibrating piece, can be stable when the vibration support in accommodating space with the vibrating piece suspension, be difficult for droing, need not additionally add the damping fin between elastic support piece and vibrating piece to and set up in the bottom of casing and fall the screening glass, reduced the required component of vibrating motor, improved vibrating motor's production efficiency, practiced thrift manufacturing cost.

Description

Vibration motor

[ technical field ] A method for producing a semiconductor device

The present invention relates to vibration motors, and particularly to a vibration motor for an electronic sound generator.

[ background of the invention ]

With the development of electronic technology, silent incoming call prompt of mobile communication terminal devices such as mobile phones and the like needs to remind users by means of vibration of the body, and a component generating vibration is a built-in vibration motor, and a core device of small-sized medical health care equipment such as a vibration massager is also a built-in vibration motor. Traditional vibrating motor, which comprises an outer shell, accept the vibrating member in the shell, mounting and elastic support piece, vibrating member and shell all are connected with elastic support piece, traditional elastic support piece is the stainless steel stamping workpiece mostly, because traditional elastic support piece is fixed insecure, the easy landing during the vibration, consequently need set up the damping fin at its contact position with vibrating member, in order to prevent that elastic support piece landing and vibrating member from breaking away from, need set up the drop protection piece in the bottom of casing simultaneously, in order to prevent that elastic support piece from producing the noise and damaging the shell when falling, influence the user and use.

[ summary of the invention ]

The invention aims to provide a vibration motor to solve the problem that the traditional vibration motor needs too many elements and affects the production efficiency and the production cost.

The technical scheme of the invention is as follows: a vibration motor comprises a shell with a containing space, a vibration piece and a fixing piece which are contained in the containing space, the vibration motor further comprises an elastic supporting piece for suspending and supporting the vibration piece in the accommodating space, the elastic supporting piece comprises a first fixing part fixed on the shell, a second fixing part fixed on the shell and arranged at an interval with the first fixing part, and an elastic arm connected between the first fixing part and the second fixing part, the elastic arm comprises a first connecting arm connected with the first fixing part, a second connecting arm connected with the second fixing part and an extension arm connected between the first connecting arm and the second connecting arm, the extension arm is fixedly connected with the vibrating piece, and the elastic arm is suspended in the accommodating space and provides restoring force of the vibrating piece.

Further, the first fixing portion and the second fixing portion are fixed on different sides of the shell.

Further, the elastic arm further comprises a bump extending from the extension arm towards the direction of the vibrating piece, and the extension arm is fixed with the vibrating piece through the bump.

Further, elastic support spare is made by macromolecular material, the casing is including fixed the diapire of mounting, with the relative roof that just the interval set up of diapire and certainly the roof buckling extension reaches the lateral wall of diapire, the lateral wall is including setting up vibrating part is along the first lateral wall at the relative both ends of vibration direction and connection the second lateral wall of first lateral wall.

Furthermore, the first fixing part and the second fixing part are arranged opposite to each other and are respectively fixed on the second side wall; or, the first fixing part is fixed on the top wall, and the second fixing part is fixed on the bottom wall.

Further, the thickness of first linking arm along the vibration direction is towards keeping away from the direction of first fixed part reduces gradually, the second linking arm with first linking arm symmetry sets up the both sides of extension arm.

Further, the vibrating piece corresponds the extension arm is equipped with the connecting block, the connecting block with lug integrated into one piece.

Furthermore, the first fixing portion and the second fixing portion are abutted against the first side wall on the side far away from the vibrating piece.

Further, one of the vibrating element and the fixing element includes a coil, and the other of the vibrating element and the fixing element includes a magnet, and the magnet is opposite to the coil and is disposed at an interval.

Further, the mounting is including installing the circuit board of diapire, the circuit board with the coil electricity is connected, the vibrating part including be equipped with the holding chamber the balancing weight and accept in the holding chamber and by the balancing weight bearing the magnet or the coil, the balancing weight with the extension arm is connected.

The invention has the beneficial effects that: the elastic supporting piece of the vibrating motor comprises a first fixing part fixed on the shell, a second fixing part fixed on the shell and arranged at an interval with the first fixing part, and an elastic arm connected between the first fixing part and the second fixing part, wherein the elastic arm comprises an extension arm connected and fixed with the vibrating piece. This elastic support piece is fixed with the casing through first fixed part and second fixed part, and is fixed through extension arm and vibrating piece, can be stable when the vibration support in accommodating space with the vibrating piece suspension, be difficult for droing, need not additionally add the damping fin between elastic support piece and vibrating piece to and set up in the bottom of casing and fall the screening glass, reduced the required component of vibrating motor, improved vibrating motor's production efficiency, practiced thrift manufacturing cost.

[ description of the drawings ]

Fig. 1 is a schematic structural view of a vibration motor according to an embodiment of the present invention;

FIG. 2 is an exploded view of the vibration motor according to the embodiment of the present invention;

fig. 3 is a sectional view of a vibration motor of an embodiment of the present invention along a direction a-a;

fig. 4 is a schematic structural diagram of an elastic support member in a vibration motor according to an embodiment of the present invention.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1 and fig. 2, a vibration motor according to an embodiment of the present invention includes: a casing 1, a vibrating member 2, a fixing member 3, and an elastic support member 4. The housing 1 has an accommodating space 10, the vibrating element 2, the fixing element 3 and the elastic supporting element 4 are accommodated in the accommodating space 10, and the elastic supporting element 4 supports the vibrating element 2 in the accommodating space 10 in a suspension manner. Referring to fig. 4, the elastic supporting member 4 includes: the first fixing portion 41 is fixed to the housing 1, the second fixing portion 42 is fixed to the housing 1 and spaced from the first fixing portion 41, and the elastic arm 43 is connected between the first fixing portion 41 and the second fixing portion 42. The elastic arm 43 includes: the vibration part comprises a first connecting arm 431, a second connecting arm 432 and an extension arm 433, wherein the first connecting arm 431 is connected with the first fixing part 41, the second connecting arm 432 is connected with the second fixing part 42, the extension arm 433 is connected between the first connecting arm 431 and the second connecting arm 432 and is fixedly connected with the vibration part 2, and the elastic arm 43 is suspended in the accommodating space 10 and provides restoring force for the vibration part 2. Specifically, the first connecting arm 431 includes a first end 4311 far from the first fixing portion 41, the second connecting arm 432 includes a second end 4321 far from the second fixing portion 42, and the extension arm 433 extends from the first end 4311 to a position near the second fixing portion 42 and is connected to the second end 4321.

This elastic support piece is fixed with the casing through first fixed part and second fixed part, and is fixed through extension arm and vibrating piece, can be stable when the vibration support in accommodating space with the vibrating piece suspension, be difficult for droing, need not additionally add the damping fin between elastic support piece and vibrating piece to and set up in the bottom of casing and fall the screening glass, reduced the required component of vibrating motor, improved vibrating motor's production efficiency, practiced thrift manufacturing cost.

Referring to fig. 3 and 4, the first fixing portion 41 and the second fixing portion 42 are fixed on different sides of the housing 1. The elastic arm 43 further includes a protrusion 434 extending from the extension arm 433 toward the vibrating member 2, and the extension arm 433 is fixed to the vibrating member 2 via the protrusion 434. The vibrating member 2 is provided with a connecting block 211 corresponding to the extension arm 433, and the connecting block 211 and the bump 434 are integrally formed, so that the vibrating member 2 is more stably connected with the elastic supporting member 4. The elastic support 4 is made of a polymer material, which may be a polymer silica gel material or a polymer rubber material. Because this macromolecular material is not metal material, even take place to fall also can not collide with the shell and produce the noise, damage the shell even, consequently can bring better use experience for the customer.

Referring to fig. 2 and 3, the housing 1 includes: the fixing piece comprises a bottom wall 11, a top wall 12 and a side wall 13, wherein the bottom wall 11 is used for fixing the fixing piece 3, the top wall 12 is opposite to the bottom wall 11 and is arranged at an interval, and the side wall 13 is bent from the top wall 12 and extends to the bottom wall 11. The side wall 13 includes: a first sidewall 131 provided at opposite ends of the vibrating member 2 in the vibrating direction, and a second sidewall 132 connecting the first sidewall 131. The first fixing portion 41 and the second fixing portion 42 are disposed opposite to each other and fixed to the second sidewall 132 respectively. The thickness of the first connecting arm 431 along the vibration direction gradually decreases toward a direction away from the first fixing portion 41, and the second connecting arm 432 and the first connecting arm 431 are symmetrically disposed at both sides of the extension arm 433. The first fixing portion 41 and the second fixing portion 42 are abutted against the first sidewall 131 on the side away from the vibrating element 2, so that the effect of vibration conduction is more remarkable. In another embodiment of the present invention, the first fixing portion 41 is fixed on the top wall 12, and the second fixing portion 42 is fixed on the bottom wall 11.

Still referring to fig. 2 and 3, the vibrating member 2 includes: balancing weight 21 and magnet 22, balancing weight 21 correspond the position of extension arm 433 and are equipped with connecting block 211, and connecting block 211 and lug 434 integrated into one piece make vibrating member 2 more firm with being connected of elastic support piece 4. The weight 21 has a cavity 212, and the magnet 22 is received in the cavity 212 and supported by the weight 21. The fixing member 3 includes: a circuit board 31 and a coil 32, the circuit board 31 being mounted on the bottom wall 11, the coil 32 being electrically connected to the circuit board 31. The magnet 22 is disposed opposite and spaced from the coil 32.

Specifically, the magnet 22 includes a first sub-magnet 221, two second sub-magnets 222 respectively disposed at both sides of the first sub-magnet 221, and a third sub-magnet 223 respectively disposed at outer sides of the two second sub-magnets 222, and five magnets are sequentially assembled in succession, and the five magnets interact with the coil 32 after being energized, thereby causing the vibration effect to be generated by the vibrator 3 as a whole. 5 sub-magnets with the same magnetism or 5 sub-magnets with different magnetism can be adopted. When 5 sub-magnets are different in magnetism, the magnetic strengths of the five magnets are reasonably arranged according to the distribution situation of the magnetic flux generated by the coil 32 after the coil 32 is electrified, so that after the coil 32 is electrified, the five magnets can be better matched with the magnetic flux generated by the coil 32 to achieve a more balanced vibration effect. In another embodiment of the present invention, the vibrating member 2 includes: balancing weight and coil, mounting 3 includes: a circuit board and a magnet.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. A vibration motor comprises a shell with an accommodating space, a vibration piece and a fixing piece, wherein the vibration piece and the fixing piece are accommodated in the accommodating space, the vibration motor further comprises an elastic supporting piece which supports the vibration piece in a suspension manner in the accommodating space, and the vibration motor is characterized in that: the elastic supporting piece comprises a first fixing part fixed on the shell, a second fixing part fixed on the shell and arranged at an interval with the first fixing part, and an elastic arm connected between the first fixing part and the second fixing part, the elastic arm comprises a first connecting arm connected with the first fixing part, a second connecting arm connected with the second fixing part, an extension arm connected between the first connecting arm and the second connecting arm, and a lug extending from the extension arm towards the direction of the vibrating piece, the extension arm is fixed with the vibrating piece through the lug, the first connecting arm comprises a first end far away from the first fixing part, the second connecting arm comprises a second end far away from the second fixing part, and the extension arm extends from the first end to the position close to the second fixing part and is connected to the second end; the elastic arm is suspended in the accommodating space and provides restoring force for the vibrating piece;

the elastic supporting piece is made of a high polymer material; the vibrating piece corresponds the extension arm is equipped with the connecting block, the connecting block with lug integrated into one piece.

2. A vibration motor according to claim 1, wherein the first fixing portion and the second fixing portion are fixed to different sides of the housing.

3. A vibration motor according to claim 1 or 2, wherein: the casing is including fixed the diapire of mounting, with relative and the roof that the interval set up of diapire and certainly the roof buckling extend to the lateral wall of diapire, the lateral wall is including setting up the first lateral wall and the connection at the relative both ends of vibrating member along the vibration direction the second lateral wall of first lateral wall.

4. A vibration motor according to claim 3, wherein: the first fixing part and the second fixing part are arranged opposite to each other and are respectively fixed on the second side wall; or, the first fixing part is fixed on the top wall, and the second fixing part is fixed on the bottom wall.

5. The vibration motor according to claim 4, wherein: the first connecting arm is followed the thickness of vibration direction is towards keeping away from the direction of first fixed part reduces gradually, the second connecting arm with first connecting arm symmetry sets up the both sides of extension arm.

6. The vibration motor according to claim 4, wherein: the first fixing part and the second fixing part are abutted against the first side wall at the side far away from the vibrating piece.

7. A vibration motor according to claim 3, wherein: one of the vibrating piece and the fixing piece comprises a coil, the other of the vibrating piece and the fixing piece comprises a magnet, and the magnet is opposite to the coil and arranged at intervals.

8. The vibration motor according to claim 7, wherein: the mounting is including installing the circuit board of diapire, the circuit board with the coil electricity is connected, the vibration piece including be equipped with the holding chamber the balancing weight and accept in the holding chamber and by the balancing weight bearing the magnet or the coil, the balancing weight with the extension arm is connected.