阅读说明：本技术 一种新型弹片式线性马达及其实现方法 (Novel elastic sheet type linear motor and implementation method thereof ) 是由 严新江 周仕 于 2019-09-11 设计创作，主要内容包括：本发明公开了一种新型弹片式线性马达,包括机壳,机壳的内部设有质量块,且机壳的底部连接有支架,质量块的内部连接有磁钢,质量块的上下两侧连接有弹簧片,支架的上方连接有柔性线路板,柔性线路板的上方连接有线圈,磁钢通过磁框连接在质量块上,磁钢与磁框、线圈形成电磁结构；本发明还公开了一种新型弹片式线性马达的实现方法。本发明弹簧片的两端连接有水平的垫片,方便与弹簧片与机壳、支架以及质量块连接,同时可作为为阻尼泡棉的冲击面；本发明中的阻尼结构由阻尼泡棉提供,其动力学特性随温度变化很小,保证了马达在高温及低温条件下运行稳定,振感变化小,避免了由于振子位移过大,剐蹭机壳而产生的噪音。(The invention discloses a novel spring plate type linear motor which comprises a shell, wherein a mass block is arranged in the shell, the bottom of the shell is connected with a support, magnetic steel is connected in the mass block, spring plates are connected to the upper side and the lower side of the mass block, a flexible circuit board is connected above the support, a coil is connected above the flexible circuit board, the magnetic steel is connected to the mass block through a magnetic frame, and the magnetic steel, the magnetic frame and the coil form an electromagnetic structure; the invention also discloses a realization method of the novel elastic sheet type linear motor. The two ends of the spring piece are connected with the horizontal gaskets, so that the spring piece can be conveniently connected with the shell, the bracket and the mass block and can be used as an impact surface of damping foam; the damping structure is provided by the damping foam, the dynamic characteristic of the damping structure is very small along with the temperature change, the stable operation of the motor under the conditions of high temperature and low temperature is ensured, the vibration change is small, and the noise caused by scraping and rubbing the shell due to overlarge displacement of the vibrator is avoided.)

1. The utility model provides a novel shell fragment formula linear motor, includes casing (1), its characterized in that: the inside of casing (1) is equipped with quality piece (4), and the bottom of casing (1) is connected with support (9), and the internal connection of quality piece (4) has magnet steel (6), and the upper and lower both sides of quality piece (4) are connected with spring leaf (3), and the top of support (9) is connected with flexible line way board (10), and the top of flexible line way board (10) is connected with coil (8), and magnet steel (6) are located the inside of coil (8).

2. The linear motor of claim 1, wherein: the mass block is characterized in that a cavity is formed in the mass block (4), a magnetic frame (5) is fixed in the cavity, and the magnetic steel (6) is fixed in the magnetic frame (5).

3. The linear motor of claim 2, wherein: and a yoke (7) is connected below the magnetic steel (6).

4. The novel shrapnel type linear motor according to claim 3, characterized in that: the number of the spring pieces (3) is four, and the four spring pieces are arranged on the upper side and the lower side of the mass block (4) in a pairwise crossed manner.

5. The novel shrapnel type linear motor according to claim 4, characterized in that: the two ends of the spring piece (3) are respectively connected with a gasket (11).

6. The novel shrapnel type linear motor according to claim 5, characterized in that: the gasket (11) at one end of the spring piece (3) is connected with the inner wall of the shell (1) above the mass block (4), the gasket (11) at one end of the spring piece (3) below the mass block (4) is connected with the inner wall of the support (9), and the gasket (11) at the other end of the spring piece (3) is connected with the mass block (4).

7. The novel shrapnel type linear motor according to claim 6, characterized in that: damping foam (2) are connected between the gasket (11) and the casing (1) and between the gasket (11) and the bracket (9).

8. The novel shrapnel type linear motor according to claim 7, characterized in that: the mass block (4) is connected with the magnetic frame (5) in an interference fit manner.

9. The method for implementing a new chip spring type linear motor according to any one of claims 1 to 8, comprising the following steps:

a closed cavity is formed by the casing (1) and the bracket (9);

the magnetic frame (5) and the magnetic steel (6) provide a magnetic field for driving the motor;

thirdly, the coil (8) is connected with an external power supply through a flexible circuit board (10), and after the coil is electrified, the vibrator is subjected to vertical driving force which periodically changes along the direction of current, so that the motor is driven to vibrate along the Z axis;

spring pieces (3) which are crossed pairwise and are positioned on the upper side and the lower side of the mass block (4) are connected with the mass block (4), the shell (1), the mass block (4) and the bracket (9) to provide elasticity for movement, so that the motor can vibrate up and down in a reciprocating manner along the Z axis;

and the damping foam (2) connected between the gasket (11) and the shell (1) and between the gasket (11) and the bracket (9) can limit the displacement of the vibrator in the vibration process of the motor.

10. The method of claim 9, wherein the spring plate linear motor comprises: a cavity is arranged in the mass block (4), a magnetic frame (5) is fixed in the cavity, magnetic steel (6) is fixed in the magnetic frame (5), a yoke (7) is connected below the magnetic steel (6), four spring pieces (3) are arranged, the two pieces of the spring pieces (3) are crossed in pairs and are positioned at the upper side and the lower side of the mass block (4), the two ends of each spring piece (3) are respectively connected with a gasket (11), the gasket (11) positioned at one end of each spring piece (3) above the mass block (4) is connected with the inner wall of the shell (1), the gasket (11) positioned at one end of each spring piece (3) below the mass block (4) is connected with the inner wall of the support (9), and the gasket (11) at the other end of the spring piece (3) is connected with the mass block (4), the damping foam (2) is connected between the gasket (11) and the shell (1) and between the gasket (11) and the bracket (9), and the mass block (4) is connected with the magnetic frame (5) in an interference fit manner.

Technical Field

The invention belongs to the technical field of linear vibration motors, and particularly relates to a novel spring piece type linear motor and an implementation method thereof.

Background

The miniature vibration motor is an indispensable component of electronic products such as mobile phones, tablet computers, handheld game consoles and the like, and provides tactile feedback for users. Along with the competition of the smart phone market, mobile phone manufacturers pay more and more attention to the touch experience of users, and the requirements of customers on the vibration feedback effect of the motor are higher and higher, so that a linear vibration motor different from a traditional rotor motor appears in the market. Compared with the traditional rotor motor, the linear motor has great advantages in vibration characteristics, response time, service life, noise and the like, can provide various vibration modes, and provides abundant, diverse, fine and vivid tactile feedback for users. Currently, Z-axis vibrating linear motors are mainly in the form of flat cylinders on the market. With the gradual popularization of the square linear vibration motor, in order to adapt to the stacking of mobile phones, the development of the square linear motor capable of vibrating in the Z direction is very high in market value and significance.

Disclosure of Invention

The present invention is directed to a novel leaf spring type linear motor to solve the above problems. The novel elastic sheet type linear motor provided by the invention has the characteristics of simple structure, convenience in manufacturing, shorter response time, shorter stop time, small volume and large vibration sense.

The invention also aims to provide a realization method of the novel spring plate type linear motor.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel shell fragment formula linear motor, includes the casing, and the inside of casing is equipped with the quality piece, and the bottom of casing is connected with the support, and the internal connection of quality piece has the magnet steel, and the upper and lower both sides of quality piece are connected with the spring leaf, and the top of support is connected with flexible line way board, and flexible line way board's top is connected with the coil, and the magnet steel is located the inside of coil.

Further, the mass block is internally provided with a cavity, a magnetic frame is fixed inside the cavity, and the magnetic steel is fixed inside the magnetic frame.

In the invention, a yoke is connected below the magnetic steel.

Furthermore, the number of the spring pieces is four, and the spring pieces are positioned on the upper side and the lower side of the mass block in a pairwise crossed manner.

In the invention, two ends of the spring piece are respectively connected with a gasket.

Furthermore, the gasket at one end of the spring piece above the mass block is connected with the inner wall of the shell, the gasket at one end of the spring piece below the mass block is connected with the inner wall of the bracket, and the gasket at the other end of the spring piece is connected with the mass block.

In the invention, damping foam is connected between the gasket and the casing and between the gasket and the bracket.

Further, in the present invention, the mass block is connected to the magnetic frame by interference fit.

Further, the implementation method of the novel spring plate type linear motor comprises the following steps:

the shell and the bracket form a closed cavity;

the magnetic frame and the magnetic steel provide a magnetic field for the motor to drive;

thirdly, the coil is connected with an external power supply through a flexible circuit board, and after the coil is electrified, the vibrator is subjected to an up-and-down driving force which periodically changes along the current direction, so that the motor is driven to vibrate along the Z axis;

the spring pieces which are crossed pairwise and are positioned on the upper side and the lower side of the mass block are connected with the mass block, the shell, the mass block and the bracket to provide elasticity for movement, so that the motor can vibrate up and down in a reciprocating manner along the Z axis;

and the damping foam connected between the gasket and the shell and between the gasket and the bracket can limit the displacement of the vibrator in the vibration process of the motor.

Further, in the implementation method of the novel spring piece type linear motor, a cavity is formed in the mass block, a magnetic frame is fixed in the cavity, the magnetic steel is fixed in the magnetic frame, the lower portion of the magnetic steel is connected with the yoke, four spring pieces are arranged, the four spring pieces are located on the upper side and the lower side of the mass block in a pairwise crossed mode, the two ends of each spring piece are respectively connected with the gasket, the gasket located at one end of each spring piece above the mass block is connected with the inner wall of the shell, the gasket located at one end of each spring piece below the mass block is connected with the inner wall of the support, the gasket located at the other end of each spring piece is connected with the mass block, damping foam is connected between each gasket and the shell and between each gasket.

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

1. four spring pieces are arranged on the upper side and the lower side of the mass block in a crossed manner, so that the mode of the motor F0 is Z direction;

2. the two ends of the spring piece are connected with the horizontal gaskets, so that the spring piece can be conveniently connected with the shell, the bracket and the mass block and can be used as an impact surface of damping foam;

3. the damping structure is provided by the damping foam, the dynamic characteristic of the damping structure is very small along with the temperature change, the stable operation of the motor under the conditions of high temperature and low temperature is ensured, the vibration change is small, and the noise caused by scraping and rubbing the shell due to overlarge displacement of the vibrator is avoided;

4. according to the invention, the yoke iron is connected below the magnetic steel, the utilization rate of a magnetic field is increased through the yoke iron, and the driving force of the motor is provided.

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 a connection structure of a mass block and a spring plate according to the present invention;

FIG. 4 is a schematic view of the spring plate of the present invention;

in the figure: 1. a housing; 2. damping foam; 3. a spring plate; 4. a mass block; 5. a magnetic frame; 6. magnetic steel; 7. a yoke; 8. a coil; 9. a support; 10. a flexible circuit board; 11. and (7) a gasket.

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.