阅读说明：本技术 一种波形弹片结构的电机及其实现方法 (Motor with wave-shaped elastic sheet structure and implementation method thereof ) 是由 严新江 周扬栋 于 2021-10-18 设计创作，主要内容包括：本发明公开了一种波形弹片结构的电机,包括下托架,下托架的上部设有机壳,下托架的上方设有FPC板,FPC板的上方设有线圈,线圈的外部设有质量块,质量块的内部设有位于线圈内部的磁钢,质量块通过弹簧片与下托架连接,弹簧片包括包括端点焊接部、中间焊接部和两个形变部,其中,两个形变部之间通过中间焊接部连接,端点焊接部分别位于两个形变部的两端,形变部为波形结构；本发明还公开了一种波形弹片结构的电机的实现方法。本发明弹簧片的形变部为波形结构,不仅可以充分利用电机的长宽尺寸,还可以利用电机高度方向的尺寸,从而增加了弹簧片的悬臂长度,降低了弹簧应力,从而有效的增加了马达的寿命。(The invention discloses a motor with a waveform elastic sheet structure, which comprises a lower bracket, wherein the upper part of the lower bracket is provided with a shell, an FPC (flexible printed circuit) board is arranged above the lower bracket, a coil is arranged above the FPC board, a mass block is arranged outside the coil, magnetic steel positioned inside the coil is arranged inside the mass block, the mass block is connected with the lower bracket through a spring piece, the spring piece comprises an end point welding part, a middle welding part and two deformation parts, the two deformation parts are connected through the middle welding part, the end point welding parts are respectively positioned at two ends of the two deformation parts, and the deformation parts are in a waveform structure; the invention also discloses a realization method of the motor with the wave-shaped elastic sheet structure. The deformation part of the spring piece is of a wave-shaped structure, so that the length and width of the motor can be fully utilized, and the height direction of the motor can be utilized, so that the cantilever length of the spring piece is increased, the spring stress is reduced, and the service life of the motor is effectively prolonged.)

1. The utility model provides a motor of wave form shell fragment structure, includes lower bracket, its characterized in that: the upper portion of bottom bracket is equipped with the casing, the top of bottom bracket is equipped with the FPC board, the top of FPC board is equipped with the coil, the outside of coil is equipped with the quality piece, the inside of quality piece is equipped with the magnet steel that is located the coil inside, the quality piece passes through the spring leaf and is connected with the bottom bracket, the spring leaf includes including the extreme point weld part, middle weld part and two deformation portions, wherein, connect through middle weld part between two deformation portions, the extreme point weld part is located the both ends of two deformation portions respectively, deformation portion is the wave structure.

2. The motor of claim 1, wherein: the end point welding part and the middle welding part are both of horizontal structures.

3. The motor of claim 1, wherein: the two deformation portions are symmetrically arranged about the middle welding portion.

4. The motor of claim 1, wherein: and symmetrical connecting feet are arranged on the side edges of the mass block.

5. The motor of claim 1, wherein: and two opposite side edges of the lower bracket are provided with upward bending parts.

6. The motor of claim 5, wherein: the shell is provided with a groove corresponding to the bending part.

7. The motor of claim 1, wherein: the magnetic steel is connected to the inside of the mass block through the magnetic frame.

8. The motor of claim 1, wherein: and a pole piece is arranged at the bottom of the magnetic steel.

9. The method for realizing the motor with the wave-shaped elastic sheet structure according to any one of claims 1 to 8, characterized by comprising the following steps:

a closed cavity is formed by the lower bracket and the shell;

the magnetic steel is connected to the inside of the mass block through the magnetic frame to provide a driving magnetic field for the motor;

thirdly, the coil and the FPC board form a circuit, and when the circuit is electrified, an electric field and a magnetic field interact to drive the motor to vibrate up and down;

and the spring piece is connected with the mass block and the lower bracket, so that elasticity is provided for the vibration of the motor, and the motor can vibrate up and down in a reciprocating manner.

Technical Field

The invention belongs to the technical field of vibration motors, and particularly relates to a motor with a waveform elastic sheet structure and an implementation method thereof.

Background

With the increased competition of consumer electronics markets such as smart phones and the like, manufacturers pay more and more attention to the touch experience of users, and mobile consumer electronics products in the current market generally use a micro linear vibration motor as a system feedback component, such as key touch feedback of a mobile phone, vibration feedback of a game machine and the like.

The conventional spring structure of the miniature linear vibration motor adopts a planar spring to provide vibration restoring force for the motor, and the length of a spring cantilever of the conventional scheme is limited by the length and width of the motor and cannot be too long, so that the service life of the motor is greatly influenced.

Disclosure of Invention

The present invention is directed to a motor with a wave-shaped spring structure, so as to solve the problems mentioned in the background art. The motor with the waveform elastic sheet structure provided by the invention has the characteristics that the cantilever length of the spring can be fully increased, and the service life of the motor is prolonged.

The invention also aims to provide a realization method of the motor with the wave-shaped elastic sheet structure.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a motor of wave form shell fragment structure, including the bottom bracket, the upper portion of bottom bracket is equipped with the casing, the top of bottom bracket is equipped with the FPC board, the top of FPC board is equipped with the coil, the outside of coil is equipped with the quality piece, the inside of quality piece is equipped with the magnet steel that is located the coil inside, the quality piece passes through the spring leaf and is connected with the bottom bracket, the spring leaf includes the extreme point weld part, middle weld part and two deformation portions, wherein, connect through middle weld part between two deformation portions, the extreme point weld part is located the both ends of two deformation portions respectively, deformation portion is the wave form structure.

In order to facilitate welding of the spring piece, the end-point welding portion and the middle welding portion are both horizontal structures.

In order to ensure the balance of the vertical vibration of the motor, the two deformation parts are further symmetrically arranged about the middle welding part.

In order to facilitate the welding between the mass block and the spring plate, furthermore, symmetrical connecting feet are arranged on the side edges of the mass block.

In order to provide a welding surface for the welding of the spring piece, the spring piece is convenient to weld; and meanwhile, the spring piece is used for heightening the spring piece, so that the phenomenon that the FPC board is damaged due to the fact that the spring piece touches the FPC board in the vibration process of the motor is avoided, and furthermore, two opposite side edges of the lower bracket are provided with upward bending parts.

In order to facilitate the assembly between the machine shell and the lower bracket, furthermore, a groove corresponding to the bending part is arranged on the machine shell.

In order to provide an assembly surface for the installation of the magnetic steel, draw in a magnetic field and increase the magnetic induction intensity of the coil side, so that the driving force is increased, and further, the magnetic steel is connected inside the mass block through the magnetic frame.

In order to draw the magnetic field in and increase the magnetic induction intensity of the coil side, thereby increasing the driving force, further, the bottom of the magnetic steel is provided with a pole piece.

Further, the implementation method of the motor with the wave-shaped elastic sheet structure comprises the following steps:

a closed cavity is formed by the lower bracket and the shell;

the magnetic steel is connected to the inside of the mass block through the magnetic frame to provide a driving magnetic field for the motor;

thirdly, the coil and the FPC board form a circuit, and when the circuit is electrified, an electric field and a magnetic field interact to drive the motor to vibrate up and down;

and the spring piece is connected with the mass block and the lower bracket, so that elasticity is provided for the vibration of the motor, and the motor can vibrate up and down in a reciprocating manner.

Compared with the prior art, the invention has the beneficial effects that:

1. the deformation part of the spring piece is of a waveform structure, so that the length and width of the motor can be fully utilized, and the height direction of the motor can be utilized, so that the cantilever length of the spring piece is increased, the spring stress is reduced, and the service life of the motor is effectively prolonged;

2. the end point welding part and the middle welding part are both of a horizontal structure, so that the spring piece is convenient to weld;

3. the side edges of the mass block are provided with symmetrical connecting pins, and two opposite side edges of the lower bracket are provided with upward bent parts to provide a welding surface for welding the spring pieces, so that the spring pieces can be conveniently welded;

4. the bending part can also heighten the spring piece, so that the damage of the FPC board caused by the fact that the spring piece touches the FPC board in the vibration process of the motor is avoided.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the spring plate of the present invention;

FIG. 4 is a schematic structural diagram of a mass block according to the present invention;

FIG. 5 is a schematic view of the spring plate and the mass block according to the present invention;

FIG. 6 is a schematic view of the spring plate, mass and lower bracket connection of the present invention;

FIG. 7 is a structural schematic view of another shape of the spring plate of the present invention.

In the figure: 1. a lower bracket; 101. a bending part; 2. an FPC board; 3. pole pieces; 4. a magnetic frame; 5. a mass block; 51. a connecting pin; 6. a housing; 61. a groove; 7. magnetic steel; 8. a coil; 9. a spring plate; 91. a deformation section; 92. a mid-weld; 93. and an end point welding part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Example 1

Referring to fig. 1-7, the present invention provides the following technical solutions: the utility model provides a motor of wave form shell fragment structure, including lower bracket 1, the upper portion of lower bracket 1 is equipped with casing 6, the top of lower bracket 1 is equipped with FPC board 2, the top of FPC board 2 is equipped with coil 8, coil 8's outside is equipped with quality piece 5, the inside of quality piece 5 is equipped with the inside magnet steel 7 that is located coil 8, quality piece 5 passes through spring leaf 9 and is connected with lower bracket 1, spring leaf 9 is including endpoint weld part 93, middle weld part 92 and two deformation portion 91, wherein, connect through middle weld part 92 between two deformation portion 91, endpoint weld part 93 is located the both ends of two deformation portion 91 respectively, deformation portion 91 is wave form structure.

Through adopting above-mentioned technical scheme, the deformation portion 91 of spring leaf 9 is the wave form structure, not only can make full use of the length and width size of motor, can also utilize the size of motor direction of height to increase the cantilever length of spring leaf 9, reduced spring stress, thereby the effectual life-span that increases the motor.

Specifically, the end-point welding portion 93 and the intermediate welding portion 92 are both horizontal structures.

Through adopting above-mentioned technical scheme, be convenient for weld spring leaf 9.

Specifically, the two deformations 91 are symmetrically disposed about the middle weld 92.

By adopting the technical scheme, the balance of the vertical vibration of the motor is ensured.

Specifically, the sides of the mass 5 are provided with symmetrical connecting feet 51, and the middle welding part 92 of the spring piece 9 is welded on the connecting feet 51 through laser.

By adopting the technical scheme, the mass block 5 and the spring piece 9 can be conveniently welded.

Specifically, two opposite sides of the lower bracket 1 are provided with upward bent portions 101, and the end point welding portions 93 of the spring pieces 9 are welded to the bent portions 101 by laser.

By adopting the technical scheme, a welding surface is provided for welding the spring piece 9, so that the spring piece 9 is convenient to weld; meanwhile, the spring leaf 9 can be used for heightening, and the phenomenon that the FPC board 2 is damaged due to the fact that the spring leaf 9 touches the FPC board 2 in the motor vibration process is avoided.

Specifically, the housing 6 is provided with a groove 61 corresponding to the bent portion 101.

Through adopting above-mentioned technical scheme, be convenient for the assembly between casing 6 and lower carriage 1.

Specifically, the magnetic steel 7 is connected to the inside of the mass block 5 through the magnetic frame 4.

Through adopting above-mentioned technical scheme, magnetic frame 4 provides the fitting surface for the installation of magnet steel 7, and magnetic frame 4 can draw in the magnetic field in, increases the magnetic induction intensity of coil side to increase drive power.

Example 2

The present embodiment is different from embodiment 1 in that: specifically, the bottom of the magnetic steel 7 is provided with a pole piece 3.

By adopting the technical scheme, the pole piece 3 can draw in the magnetic field and increase the magnetic induction intensity of the coil side, thereby increasing the driving force.

Further, the implementation method of the motor with the waveform elastic sheet structure comprises the following steps:

the first step, the lower bracket 1 and the shell 6 form a closed cavity;

the magnetic steel 7 is connected inside the mass block 5 through the magnetic frame 4 to provide a driving magnetic field for the motor;

thirdly, the coil 8 and the FPC board 2 form a circuit, and when the circuit is electrified, an electric field and a magnetic field interact to drive the motor to vibrate up and down;

and the spring piece 9 is connected with the mass block 5 and the lower bracket 1, so that elasticity is provided for the vibration of the motor, and the motor can vibrate up and down in a reciprocating manner.

In summary, the deformation part 91 of the spring plate 9 is of a wave-shaped structure, so that the length and width of the motor can be fully utilized, and the height of the motor can be utilized, thereby increasing the cantilever length of the spring plate 9, reducing the spring stress, and effectively prolonging the service life of the motor; the end point welding part 93 and the middle welding part 92 are both of a horizontal structure, so that the spring piece 9 is conveniently welded; the side edges of the mass block 5 are provided with symmetrical connecting feet 51, and two opposite side edges of the lower bracket 1 are provided with upward bent parts 101, so that a welding surface is provided for welding the spring piece 9, and the spring piece 9 is convenient to weld; the bending part 101 can also heighten the spring leaf 9, so that the damage of the FPC board 2 caused by the spring leaf 9 touching the FPC board 2 in the vibration process of the motor is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.