Vibrator with overheating protection

Abstract

The invention relates to the technical field of vibrators, and particularly discloses a vibrator with overheating protection, which comprises a vibrator upper shell, a vibrator lower shell and a vibrator elastic sheet, the vibrator upper shell is mounted at the upper end of the vibrator lower shell, the vibrator elastic sheet is mounted on the inner side of the vibrator lower shell, the vibrator elastic sheet is made of a synthetic steel material, and the vibrator elastic sheet is mounted in the vibrator lower shell. A temperature sensing probe is installed in the vibrator lower shell, a temperature sensor is arranged in the temperature sensing probe, the temperature sensor is electrically connected with a temperature control circuit board, and the temperature control circuit board controls the power-on state of the vibrator according to the temperature detected by the temperature sensor. A traditional plastic vibration elastic piece is replaced with the vibration elastic piece made of synthetic steel, the service life of the vibrator can be prolonged, the service life is long, the temperature in the vibrator is detected through the temperature sensor, the overheating protection function is achieved, the vibrator can be effectively protected, and safety is good.

Description

Technical Field

[0001] The present invention relates to the technical field of vibrators, and particularly to a vibrator with overheat protection. Background Art

[0002] A vibrator generally refers to a speaker vibrator, also known as a speaker vibration unit or a speaker vibrator motor. It is usually installed inside a speaker and can generate a vibration effect, causing the speaker itself to vibrate. It can be used for functions such as turning the audio on and off, volume control, treble adjustment, bass adjustment, left and right channel balance, and adjustment and control of the vibration amplitude.

[0003] After retrieval, the Chinese invention patent with the patent application number CN202322480214.0 discloses a somatosensory audio vibrator, which includes a first housing, a second housing, a voice coil, a first spring piece, a second spring piece, a magnetic circuit assembly, and a support member. The vibration source of this device is composed of the first spring piece and the second spring piece distributed at both ends of the support member and the magnetic circuit assembly disposed between the first spring piece and the second spring piece. The magnetic circuit assembly is sleeved on the support member and is axially symmetrically distributed with the support member as the center. Both ends of the support member are fixedly connected to the first housing and the second housing, and the first spring piece and the second spring piece are fixedly connected to the magnetic circuit assembly. With such a design, not only is the vibration source structure compact, but also the entire somatosensory audio vibrator structure is very stable, which can ensure that the vibration source is more stable during vibration, is less likely to have unbalanced vibration, and can achieve a greater vibration force.

[0004] Another example is the Chinese invention patent with the patent application number CN202421283763.7, which discloses a vibrator for a guitar speaker, including a support bracket. A magnetic conductive U-shaped iron is fixedly connected to the bottom of the support bracket. A PCB pad is arranged inside the support bracket. An FPC circuit is provided in the middle of the support bracket. A vibration spring piece is arranged below the middle of the support bracket. A coil is arranged at the bottom of the vibration spring piece. A driving top cover is arranged at the top of the support bracket. Connecting plates are fixedly connected to both sides of the driving top cover. A resilient spring piece is fixedly connected to the bottom of the connecting plate. A pressing block is fixedly connected to the outside of the resilient spring piece. Limiting components are arranged on the outside of both sides of the support bracket. In this invention, through the cooperation of the driving top cover, the support bracket, the connecting plate, the resilient spring piece, the slot, the notch, and the limiting block, the limiting component can limit the resilient spring piece, thereby realizing the disassembly and installation of the driving top cover.

[0005] Although the existing vibrators mentioned above can meet the basic usage requirements, they all use plastic vibration spring pieces inside. After long-term use, they are prone to wear, affecting the service life of the vibrator, and the service life is relatively short. Moreover, they do not have an overheat protection function. If they continue to work and the temperature becomes too high, it will damage the vibrator, posing a relatively large safety hazard. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a vibrator with overheat protection in view of the above-mentioned defects of the prior art. By setting a vibration shrapnel made of synthetic steel to replace the traditional plastic vibration shrapnel, the service life of the vibrator can be extended, and the service life is relatively long. By setting a temperature sensor to detect the temperature inside the vibrator, the overheat protection function is realized, and the vibrator can be effectively protected, and the safety is good.

[0007] To solve the above technical problem, the technical solution of the present invention is as follows:

[0008] A vibrator with overheat protection includes an upper oscillator housing, a lower oscillator housing and a vibration shrapnel. The upper oscillator housing is installed at the upper end of the lower oscillator housing. The vibration shrapnel is installed inside the lower oscillator housing. The vibration shrapnel is made of synthetic steel. A temperature sensing probe is installed inside the lower oscillator housing. A temperature sensor is arranged inside the temperature sensing probe. The temperature sensor is electrically connected to a temperature control circuit board. The temperature control circuit board controls the power-on state of the vibrator according to the temperature detected by the temperature sensor.

[0009] Preferably, the temperature control circuit board includes a temperature sensor interface, a power supply interface and a main control chip. The main control chip is electrically connected to the temperature sensor interface and the power supply interface respectively.

[0010] Preferably, several connecting ears are arranged on the sides of the upper oscillator housing and the lower oscillator housing. Screw through holes are formed in the connecting ears. The upper oscillator housing is connected to the lower oscillator housing by screws.

[0011] Preferably, several elastic arms are arranged on the outer side of the vibration shrapnel. The elastic arms are fixedly connected to the lower oscillator housing through positioning posts.

[0012] Preferably, the elastic arms include a first elastic arm, a second elastic arm and a third elastic arm. The first elastic arm, the second elastic arm and the third elastic arm are evenly distributed at the vertices of a triangle on the outer side of the vibration shrapnel.

[0013] Preferably, screw through holes are formed at the bottoms of the positioning posts. Positioning post clamping through holes adapted to the positioning posts are formed on the lower oscillator housing. The positioning posts are fixedly connected to the lower oscillator housing by screws.

[0014] Preferably, several arc-shaped hollow through holes are formed on the vibration shrapnel. The arc-shaped hollow through holes are sequentially distributed along the edge of a circle on the vibration shrapnel.

[0015] Preferably, a vibration shrapnel installation cavity adapted to the vibration shrapnel is formed inside the lower oscillator housing. The vibration shrapnel is installed in the vibration shrapnel installation cavity.

[0016] Preferably, a plurality of uniformly distributed heat dissipation grooves are formed at the upper end of the upper oscillator housing, and a plurality of uniformly distributed heat dissipation through holes are formed at the outer side of the bottom of the lower oscillator housing. The heat dissipation through holes are arranged in an "L" shape.

[0017] Preferably, a ceramic coating is sprayed on the surface of the oscillator spring piece, and both the upper oscillator housing and the lower oscillator housing are made of non-magnetic sheet materials.

[0018] By adopting the above technical solution, a vibrator with overheat protection provided by the present invention has the following beneficial effects: The upper oscillator housing in the vibrator is installed at the upper end of the lower oscillator housing, the oscillator spring piece is installed inside the lower oscillator housing, the oscillator spring piece is made of synthetic steel, a temperature induction probe is installed in the lower oscillator housing, a temperature sensor is arranged inside the temperature induction probe, the temperature sensor is electrically connected to a temperature control circuit board, and the temperature control circuit board controls the power-on state of the vibrator according to the temperature detected by the temperature sensor. By setting the oscillator spring piece made of synthetic steel to replace the traditional plastic vibration spring piece, the service life of the vibrator can be extended. Compared with the traditional vibrator, its service life is greatly increased by 3-5 times, which can reach about 500 hours, and the service life is relatively long. By setting a temperature sensor to detect the temperature inside the vibrator, the overheat protection function is realized, the vibrator can be effectively protected, and the safety is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded view of the present invention;

[0020] Figure 2 is a perspective view of the present invention;

[0021] Figure 3 is a perspective view of the present invention from another angle;

[0022] Figure 4 is a circuit schematic diagram of the present invention;

[0023] In the figure, 1-upper oscillator housing, 2-lower oscillator housing, 3-oscillator spring piece, 4-temperature induction probe, 5-temperature sensor interface, 6-power supply interface, 7-main control chip, 8-connecting ear, 9-screw through hole, 10-first elastic arm, 11-second elastic arm, 12-third elastic arm, 13-positioning post, 14-positioning post clamping through hole, 15-arc-shaped hollow through hole, 16-oscillator spring piece installation cavity, 17-heat dissipation groove, 18-heat dissipation through hole. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] As Figures 1-4 shown, the vibrator with overheat protection includes an oscillator upper shell 1, an oscillator lower shell 2 and an oscillator spring piece 3. The oscillator upper shell 1 is installed at the upper end of the oscillator lower shell 2, and the oscillator spring piece 3 is installed inside the oscillator lower shell 2. The oscillator spring piece 3 is made of synthetic steel. A temperature induction probe 4 is installed inside the oscillator lower shell 2, and a temperature sensor is arranged inside the temperature induction probe 4. The temperature sensor is electrically connected to a temperature control circuit board, and the temperature control circuit board controls the power-on state of the vibrator according to the temperature detected by the temperature sensor. It can be understood that an oscillator spring piece installation cavity 16 adapted to the oscillator spring piece 3 is opened inside the oscillator lower shell 2, and the oscillator spring piece 3 is installed inside the oscillator spring piece installation cavity 16.

[0026] Specifically, the temperature control circuit board includes a temperature sensor interface 5, a power supply interface 6 and a main control chip 7. The main control chip 7 is electrically connected to the temperature sensor interface 5 and the power supply interface 6 respectively. It can be understood that the temperature sensor interface 5 is connected to the temperature sensor, and the power supply interface 6 is used to connect an external power supply to the vibrator to supply power to the vibrator. The main control chip 7 can be a single-chip microcomputer chip of the STM32 series, etc., and is used to receive the temperature data detected by the temperature sensor. When the detected temperature exceeds the preset range, the main control chip 7 outputs a control signal to cut off the power supply of the vibrator to achieve overheat protection.

[0027] Specifically, a plurality of connecting ears 8 are arranged on the sides of the oscillator upper shell 1 and the oscillator lower shell 2, and screw through holes 9 are opened on the connecting ears 8. The oscillator upper shell 1 is connected to the oscillator lower shell 2 by screws. It can be understood that the number of the connecting ears 8 is 3, and they are distributed in turn at the vertices of an equilateral triangle. When installing, align the oscillator upper shell 1 and the oscillator lower shell 2 and then screw in the screws, which is used to improve the connection stability between the oscillator upper shell 1 and the oscillator lower shell 2.

[0028] Specifically, several elastic arms are arranged on the outer side of the vibration elastic piece 3. The elastic arms are fixedly connected to the lower shell 2 of the oscillator through positioning posts 13. The elastic arms include a first elastic arm 10, a second elastic arm 11 and a third elastic arm 12. The first elastic arm 10, the second elastic arm 11 and the third elastic arm 12 are evenly distributed at the vertices of a triangle on the outer side of the vibration elastic piece 3. It can be understood that adopting a structure of multiple symmetrically distributed elastic arms can enhance the vibration uniformity in all directions of the vibration elastic piece 3, expand the frequency response range of the oscillator, and at the same time improve the high-frequency ductility and sensitivity; moreover, through the regional heat dissipation design of the elastic arms, the influence of temperature rise on the material performance can be reduced, and the reliability of the vibration elastic piece 3 under long-term high-frequency vibration can be improved; the arc-shaped elastic arm design can reduce non-linear distortion, ensure the consistency of the deformation of the vibration elastic piece 3 during the vibration process, and improve the sound quality stability.

[0029] Specifically, a screw through hole is opened at the bottom of the positioning post 13, and a positioning post clamping through hole 14 adapted to the positioning post 13 is opened on the lower shell 2 of the oscillator. The positioning post 13 is fixedly connected to the lower shell 2 of the oscillator through a screw. It can be understood that through the perforation cooperation between the positioning post 13 and the lower shell 2 of the oscillator, the precise assembly of the vibration elastic piece 3 and the lower shell 2 of the oscillator can be realized, and the vibration deviation caused by the installation deviation can be reduced.

[0030] Specifically, several arc-shaped hollow through holes 15 are opened on the vibration elastic piece 3. The arc-shaped hollow through holes 15 are sequentially distributed along the edge of a circle on the vibration elastic piece 3. It can be understood that by setting the arc-shaped hollow through holes 15 as the hollow area, the quality of the vibration elastic piece 3 can be reduced while maintaining the structural rigidity, and the vibration response speed can be improved.

[0031] Specifically, several evenly distributed heat dissipation grooves 17 are opened at the upper end of the upper shell 1 of the oscillator, and several evenly distributed heat dissipation through holes 18 are opened on the outer side of the bottom of the lower shell 2 of the oscillator. The heat dissipation through holes 18 are arranged in an "L" shape. It can be understood that through the regional heat dissipation design, the internal heat dissipation can be accelerated, and the influence of temperature rise on the performance of the vibration elastic piece 3 can be reduced.

[0032] Specifically, a ceramic coating is sprayed on the surface of the vibration elastic piece 3, and both the upper shell 1 and the lower shell 2 of the oscillator are made of non-magnetic sheet materials. It can be understood that by spraying a ceramic coating (such as Al2O3-TiO2) on the surface of the vibration elastic piece 3, the friction loss rate is reduced by 67%, and the service life is extended; the upper shell 1 and the lower shell 2 of the oscillator are made of non-magnetic sheet materials (such as titanium alloy or composite materials) to avoid magnetic field interference and ensure the vibration transmission efficiency.

[0033] It can be understood that the design of the present invention is reasonable and the structure is unique. By setting the vibration shrapnel 3 made of synthetic steel to replace the traditional plastic vibration shrapnel, the service life of the vibrator can be extended. Compared with the traditional vibrator, its service life is greatly improved by 3-5 times, reaching about 500 hours, with a relatively long service life. By setting a temperature sensor to detect the temperature inside the vibrator, the overheat protection function can be realized, effectively protecting the vibrator and having good safety.

[0034] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and variations made to these embodiments still fall within the protection scope of the present invention.

Claims

1. A vibrator with overheat protection, comprising an upper oscillator shell, a lower oscillator shell and an oscillator elastic piece. The upper oscillator shell is installed at the upper end of the lower oscillator shell, and the oscillator elastic piece is installed inside the lower oscillator shell. It is characterized in that: The vibration reed is made of synthetic steel. A temperature sensing probe is installed inside the lower housing of the oscillator. A temperature sensor is arranged inside the temperature sensing probe. The temperature sensor is electrically connected to a temperature control circuit board. The temperature control circuit board controls the energization state of the vibrator according to the temperature detected by the temperature sensor.

2. The vibrator with overheat protection according to claim 1, characterized in that: The temperature control circuit board includes a temperature sensor interface, a power interface and a main control chip. The main control chip is electrically connected to the temperature sensor interface and the power interface respectively.

3. The vibrator with overheat protection according to claim 1, wherein: A number of connecting ears are provided on the sides of the upper housing and the lower housing of the oscillator. Screw through holes are provided on the connecting ears. The upper housing of the oscillator is connected to the lower housing of the oscillator by screws.

4. The vibrator with overheat protection according to claim 1, characterized in that: A number of elastic arms are arranged on the outer side of the vibration reed. The elastic arms are fixedly connected to the lower housing of the oscillator through positioning posts.

5. The vibrator with overheat protection according to claim 4, characterized in that: The elastic arms include a first elastic arm, a second elastic arm and a third elastic arm. The first elastic arm, the second elastic arm and the third elastic arm are evenly distributed at the vertices of a triangle on the outer side of the vibration reed.

6. The vibrator with overheat protection according to claim 4, characterized in that: Screw through holes are provided at the bottom of the positioning post. Positioning post clamping through holes adapted to the positioning post are provided on the lower housing of the oscillator. The positioning post is fixedly connected to the lower housing of the oscillator by screws.

7. The vibrator with overheat protection according to claim 1, characterized in that: A number of arc-shaped hollow through holes are provided on the vibration reed. The arc-shaped hollow through holes are sequentially distributed along the edge of a circle on the vibration reed.

8. The vibrator with overheat protection according to claim 1, characterized in that: A vibration reed installation cavity adapted to the vibration reed is provided inside the lower housing of the oscillator. The vibration reed is installed in the vibration reed installation cavity.

9. The vibrator with overheat protection according to claim 1, wherein: A number of evenly distributed heat dissipation grooves are provided at the upper end of the upper housing of the oscillator. A number of evenly distributed heat dissipation through holes are provided on the outer side of the bottom of the lower housing of the oscillator. The heat dissipation through holes are arranged in an "L" shape.

10. The vibrator with overheat protection according to claim 1, characterized in that: A ceramic coating is sprayed on the surface of the vibration reed. The upper housing and the lower housing of the oscillator are both made of non-magnetic sheet materials.

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