CN112825450A

CN112825450A - Vibration motor

Info

Publication number: CN112825450A
Application number: CN201911139979.XA
Authority: CN
Inventors: 胡海峰; 肖钦月
Original assignee: XINNING COUNTY JINXIN ELECTRONIC CO Ltd
Current assignee: XINNING COUNTY JINXIN ELECTRONIC CO Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2021-05-21

Abstract

The invention provides a vibrating motor which comprises a shell, a vibrator, a stator and an elastic supporting piece, wherein the elastic supporting piece comprises a fixed part fixed with the shell, connecting arms bent and extended from two sides of the fixed part, bending parts connected with the two connecting arms, elastic arms connected with the two bending parts, clamping parts connected with the two elastic arms and elastic pieces arranged between the vibrator and the fixed part.

Description

Vibration motor

Technical Field

The invention relates to the field of motors, in particular to a vibration motor.

Background

With the development of communication technology, portable electronic devices, such as mobile phones, tablet computers, multimedia entertainment devices, etc., have become essential for people's life. In these electronic devices, a miniature linear vibration motor is generally used for feedback of the system, such as vibration feedback of incoming call prompt of a mobile phone.

The linear vibration motor generally includes a vibrator and a stator, the vibrator includes a mass block, a magnet assembly, a spring plate, and the like, and the stator includes a FPCB, a coil, and the like, wherein the coil and the FPCB are fixedly connected to a housing of the linear vibration motor, the mass block and the magnet assembly are fixedly connected together, the spring plate is connected between the mass block and the housing, and the coil is located within a magnetic field range generated by the magnet assembly. Therefore, after the coil is electrified, the coil can be acted by ampere force, and the coil is fixedly connected to the shell, so that the vibrator can regularly vibrate in a reciprocating mode under the driving of the reaction force of the ampere force, and the mass block is large in mass, so that the effect of vibration of the whole linear vibration motor can be obtained.

Need elastic support piece to provide the restoring force of quality piece vibration among the current vibrating motor, traditional spring part or elastic support piece suspension oscillator system, the oscillator takes place to rock easily at the vibration in-process, causes the skew, and the vibration effect is poor.

Therefore, there is a need to provide a new type of vibration motor to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a novel vibration motor which is good in vibration effect and reliable in performance.

In order to achieve the above object, the present invention provides a vibration motor, including a housing, a vibrator suspended in the housing, a stator for driving the vibrator to vibrate, and an elastic support member for supporting the vibrator, wherein the elastic support member includes a fixing portion fixed to the housing, connecting arms bent and extended from both sides of the fixing portion, bending portions connected to the two connecting arms, elastic arms connected to the two bending portions, clamping portions connected to the two elastic arms, and elastic pieces disposed between the vibrator and the fixing portion, the two clamping portions are symmetrically disposed on both sides of the vibrator so as to provide an elastic restoring force perpendicular to a vibration direction, and the elastic pieces provide an elastic restoring force along the vibration direction.

Furthermore, the oscillator comprises a balancing weight, a permanent magnet arranged in the balancing weight and a magnetic conduction plate covered on the balancing weight.

Furthermore, the counterweight block is provided with two accommodating grooves, the two accommodating grooves are arranged at intervals and are adjacent to each other, the two corresponding permanent magnets are also arranged, and the two permanent magnets are embedded in the accommodating grooves.

Furthermore, the stator comprises a driving coil arranged opposite to the permanent magnet and a circuit board arranged below the driving coil, and a conductive end is arranged on the circuit board.

Furthermore, the circuit board adopts FPCB.

Further, the casing includes bottom plate and the lid that cooperates with the bottom plate, the circuit board sets up on the bottom plate.

Compared with the prior art, the vibration motor has the advantages that the elastic supporting piece is adopted to support the mass block in a balanced manner, the mass block cannot be polarized, and the vibration motor is simple in structure, large in elasticity, small in occupied space and volume, low in manufacturing cost, good in vibration effect and reliable in performance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:

fig. 1 is a sectional view of a vibration motor of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the vibration motor includes a housing 1, a vibrator 2 suspended in the housing 1, and a stator 3 driving the vibrator 2 to vibrate, where the housing 1 includes a bottom plate 11 and a cover 12 cooperating with the bottom plate 11, the bottom plate and the cover form a housing having an accommodating space for accommodating the vibrator and the stator to perform a supporting and protecting function, the vibrator 2 is suspended in the housing 1 through an elastic support 4, and the stator 3 applies an acting force to the vibrator 2 to drive the vibrator 2 to vibrate and feed back.

The elastic supporting part 4 comprises a fixing part 41 fixed with the shell 1, connecting arms 42 extending from two sides of the fixing part 41 in a bending mode, bending parts 43 connected with the connecting arms 42, elastic arms 44 connected with the bending parts 43, clamping parts 45 connected with the elastic arms 44 and elastic sheets 46 arranged between the vibrator 2 and the fixing part 41.

Two 45 symmetry settings of clamping part are in 2 both sides of oscillator and perpendicular with the vibration direction to support for the oscillator provides, shell fragment 46 provides the elastic restoring force along the vibration direction, fixed part 41 is fixed and is played a holding effect on casing 1, and linking arm 42 is used for forming the support of an contained angle, and the portion of bending 43 can be taken place to buckle along the vibration direction, so that oscillator 2 can be better along the vibration direction vibration, provides the elastic restoring force in coplanar perpendicular to vibration direction simultaneously, and elastic arm 44 is used for providing the elastic restoring force of perpendicular to vibration direction.

The vibrator 2 comprises a balancing weight 21, a permanent magnet 22 arranged in the balancing weight 21 and a magnetic conduction plate 23 covered on the balancing weight 21. The counterweight block 21 is provided with two accommodating grooves 210, the two accommodating grooves 210 are arranged adjacently at intervals, the two corresponding permanent magnets 22 are also arranged, and the two permanent magnets 22 are embedded in the accommodating grooves 210.

The stator 3 comprises a driving coil 31 facing the permanent magnet 22 and a circuit board 32 arranged below the driving coil 31, and the circuit board 32 is provided with a conductive end 321. The wiring board 32 employs FPCB. The wiring board 32 is disposed on the base plate 11.

For convenience of explanation, the vibration direction of the vibration motor is defined as an X axis, the direction perpendicular to the vibration direction on the same plane is a Y axis, and the vertical direction perpendicular to the X axis and the Y axis is a Z axis.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a vibrating motor, includes the casing, hangs the oscillator and the stator of drive oscillator vibration in the casing, its characterized in that: still including supporting the elastic support piece of oscillator, elastic support piece include with the fixed part of casing fixed, certainly the linking arm that extends is buckled to fixed part both sides, with two the portion of bending that the linking arm is connected, with two the elastic arm of bending connection, with two the clamping part that the elastic arm is connected and setting are in the oscillator with shell fragment between the fixed part, two the clamping part symmetry sets up the oscillator both sides to provide the elastic restoring force of perpendicular to direction of vibration, the shell fragment provides the elastic restoring force along the direction of vibration.

2. A vibration motor according to claim 1, wherein: the oscillator comprises a balancing weight, a permanent magnet arranged in the balancing weight and a magnetic conduction plate covered on the balancing weight.

3. A vibration motor according to claim 2, wherein: the balancing weight is provided with two accommodating grooves, the two accommodating grooves are arranged adjacently at intervals, the two corresponding permanent magnets are also arranged in the two accommodating grooves in an embedded mode.

4. A vibration motor according to claim 2, wherein: the stator comprises a driving coil and a circuit board, the driving coil is arranged opposite to the permanent magnet, the circuit board is arranged below the driving coil, and a conductive end is arranged on the circuit board.

5. The vibration motor according to claim 4, wherein: the circuit board adopts the FPCB.

6. The vibration motor according to claim 5, wherein: the casing includes bottom plate and the lid with bottom plate complex, the circuit board sets up on the bottom plate.