Mute high-efficiency voice coil motor

Abstract

The mute high-efficiency voice coil motor comprises a motor, the motor is provided with an output shaft, the motor is wrapped with a shell, the shell is wrapped with sound insulation cotton, the shell is provided with a rotating threaded rod, the threaded rod penetrates through a pressing plate and is in threaded fit with the pressing plate, one end of the threaded rod extends out of the shell, and the other end of the threaded rod is provided with a rotating shaft. When the threaded rod rotates, the pressing plate is pressed on the motor, a through hole is formed in the shell, the output shaft penetrates through the through hole, and a clamping plate is arranged in the through hole. When the device is used, the motor is placed in the shell, then the pressing plate is pressed on the motor by rotating the threaded rod, so that the motor is fixed in the shell, and when the motor operates, the output shaft rotates, and the clamping plate is pushed away from the output shaft, so that the situation that normal operation of the device is affected due to the fact that the clamping plate makes contact with the output shaft is avoided; and noise generated by the motor is filtered through the arranged sound insulation cotton, so that the influence of the generated noise on the outside is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of voice coil motors, and in particular to a silent and efficient voice coil motor. Background Art

[0002] The voice coil motor is a special form of direct drive motor with the characteristics of small structure, high speed, high acceleration response, etc. Its working principle is that the energized coil generates a force in the magnetic field, and the magnitude of the force is proportional to the current passing through the coil.

[0003] When the voice coil motor is running, due to its own movement characteristics, it will generate certain noise during operation, which will have a certain impact in its application environment (such as disks, laser positioning, optical system lens positioning, precision medical instruments, etc.). Summary of the invention

[0004] To this end, the present invention provides a silent and efficient voice coil motor to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, a silent and efficient voice coil motor comprises a motor, wherein the motor has an output shaft, a shell wrapped outside the motor, sound insulation cotton wrapped outside the shell, a rotatable threaded rod is arranged on the shell, the threaded rod passes through a pressure plate, and the threaded rod and the pressure plate are threadedly matched, and one end of the threaded rod extends outside the shell, and when the threaded rod rotates, the pressure plate is pressed on the motor, a through hole is opened on the shell, the output shaft passes through the through hole, a card plate is arranged in the through hole, the card plate is tightly attached to the surface of the output shaft, the card plate is a split structure, and when the output shaft rotates, the card plate moves in a direction away from the output shaft and separates from the output shaft, a first heat dissipation hole is opened on the end of the shell away from the through hole, a rotating plate is also arranged in the end of the shell away from the through hole, a second heat dissipation hole is opened on the rotating plate, and when the motor is running, the rotating plate rotates so that the first heat dissipation hole is connected with the second heat dissipation hole.

[0007] Furthermore, an inclined groove is provided inside the card plate, a toggle tooth is fixedly connected to the output shaft, the toggle tooth extends into the inclined groove, and when the output shaft rotates, the toggle tooth slides in the inclined groove and pushes the card plate away from the output shaft, an installation groove is provided in the outer shell, the card plate is arranged in the installation groove, a positioning rod is fixedly connected in the installation groove, a slot is provided on the card plate, and the positioning rod is inserted into the slot so that the card plate slides along a predetermined direction.

[0008] Further, a horizontally sliding support rod is arranged inside the outer shell. A fixed block is fixedly connected to the rotating plate. A vertical sliding rod is arranged inside the outer shell. The lower end of the sliding rod is placed on the fixed block. When the rotating plate rotates, the sliding rod moves upward, causing the support rod to slide.

[0009] Further, magnetic blocks are arranged on the inner wall of the installation groove, and the magnetic blocks attract the clamping plate.

[0010] Further, a first inclined block is fixedly connected to the fixed block. The lower end of the sliding rod presses on the lower end of the first inclined block. When the rotating plate rotates, the sliding rod slides upward along the first inclined block.

[0011] Further, a second inclined block is fixedly connected to the sliding rod. When the sliding rod slides upward, the second inclined block pushes the support rod towards the direction close to the output shaft.

[0012] Further, the support rod is connected to the outer shell through a spring.

[0013] Further, the clamping plate is divided into two units.

[0014] The present invention has the following advantages:

[0015] When the present device is in use, the motor is placed inside the outer shell, and then the pressing plate is pressed on the motor by rotating the threaded rod, thereby fixing the motor inside the outer shell. When the motor operates, the output shaft rotates and pushes the clamping plate away from the output shaft to prevent the clamping plate from coming into contact with the output shaft and affecting the normal operation of the present device. The noise generated by the motor is filtered through the provided sound insulation cotton to prevent the generated noise from affecting the outside.

[0016] When the motor operates, the rotating plate rotates, so that the first heat dissipation hole communicates with the second heat dissipation hole, and then the heat inside the outer shell is dissipated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a sectional view of a silent and efficient voice coil motor provided by some embodiments of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal top view structure of the outer shell of a silent and efficient voice coil motor provided by some embodiments of the present invention.

[0019] Figure 3 It is a schematic diagram of the top view structure of the rotating plate of a silent and efficient voice coil motor provided by some embodiments of the present invention.

[0020] Figure 4 It is a schematic diagram of the top view structure of the bottom surface of the outer shell of a silent and efficient voice coil motor provided by some embodiments of the present invention.

[0021] Figure 5 A schematic diagram of the matching structure of a rotating plate and a supporting rod of a silent and efficient voice coil motor provided in some embodiments of the present invention.

[0022] In the figure: 1. Motor; 2. Housing; 3. Sound insulation cotton; 4. Threaded rod; 5. Pressure plate; 6. Card plate; 7. Rotating plate; 8. Output shaft; 9. Inclined groove; 10. Toggle tooth; 11. Mounting groove; 12. Positioning rod; 13. Slot; 14. Magnetic block; 15. Sliding rod; 16. Support rod; 17. Fixed block; 18. First inclined block; 19. Second inclined block; 20. Spring. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, a silent and efficient voice coil motor in an embodiment of the first aspect of the present invention includes a motor 1, the motor 1 has an output shaft 8, a shell 2 is wrapped outside the motor 1, sound insulation cotton 3 is wrapped outside the shell 2, a rotatable threaded rod 4 is arranged on the shell 2, the threaded rod 4 passes through a pressure plate 5, and the threaded rod 4 and the pressure plate 5 are threadedly matched, and one end of the threaded rod 4 extends outside the shell 2, and when the threaded rod 4 rotates, the pressure plate 5 is pressed on the motor 1, a through hole is opened on the shell 2, the output shaft 8 passes through the through hole, a card plate 6 is arranged in the through hole, the card plate 6 is tightly attached to the surface of the output shaft 8, the card plate 6 is a split structure, and when the output shaft 8 rotates, the card plate 6 moves in a direction away from the output shaft 8 and separates from the output shaft 8, a first heat dissipation hole is opened on the end of the shell 2 away from the through hole, a rotating plate 7 is also arranged in the end of the shell 2 away from the through hole, a second heat dissipation hole is opened on the rotating plate 7, and when the motor 1 is running, the rotating plate 7 rotates so that the first heat dissipation hole is connected with the second heat dissipation hole.

[0026] When the device is in use, the motor 1 is placed in the housing 2, and then the threaded rod 4 is rotated to press the pressure plate 5 on the motor 1, thereby fixing the motor 1 in the housing 2. When the motor 1 is running, the output shaft 8 rotates and pushes the clamping plate 6 away from the output shaft 8 to avoid contact between the clamping plate 6 and the output shaft 8, which may affect the normal operation of the device.

[0027] The noise generated by the motor 1 is filtered by the sound insulation cotton 3 to prevent the noise from affecting the outside world.

[0028] When the motor 1 is running, the rotating plate 7 rotates, so that the first heat dissipation hole is connected with the second heat dissipation hole, thereby dissipating the heat in the housing 2.

[0029] An inclined groove 9 is provided inside the card plate 6, and the inclined groove 9 is an arc-shaped groove. A toggle tooth 10 is fixedly connected to the output shaft 8, and the toggle tooth 10 extends into the inclined groove 9. When the output shaft 8 rotates, the toggle tooth 10 slides in the inclined groove 9 and pushes the card plate 6 away from the output shaft 8. An installation groove 11 is provided in the housing 2, and the card plate 6 is arranged in the installation groove 11. A positioning rod 12 is fixedly connected in the installation groove 11. A slot 13 is provided on the card plate 6, and the positioning rod 12 is inserted into the slot 13, so that the card plate 6 slides along a predetermined direction.

[0030] When the device is in the initial position, the toggle tooth 10 is located at the deepest part of the inclined groove 9. As the toggle tooth 10 rotates, the toggle tooth 10 slides in the inclined groove 9, thereby pushing the card 6. In order to ensure the normal use of the device, the motor 1 rotates half a circle or a multiple of a full circle.

[0031] A horizontally sliding support rod 16 is arranged in the outer shell 2, a fixed block 17 is fixed on the rotating plate 7, a vertical sliding rod 15 is arranged in the outer shell 2, the lower end of the sliding rod 15 is placed on the fixed block 17, and when the rotating plate 7 rotates, the sliding rod 15 moves upward, causing the support rod 16 to slide.

[0032] A magnetic block 14 is disposed on the inner wall of the mounting groove 11 , and the magnetic block 14 attracts the card plate 6 , thereby pulling the card plate 6 away from the output shaft 8 , thereby preventing the toggle tooth 10 from contacting the inclined groove 9 .

[0033] A first inclined block 18 is fixedly connected to the fixed block 17 , and the lower end of the sliding rod 15 is pressed against a lower end of the first inclined block 18 . When the rotating plate 7 rotates, the sliding rod 15 slides upward along the first inclined block 18 .

[0034] The sliding rod 15 is fixedly connected with a second inclined block 19 . When the sliding rod 15 slides upward, the second inclined block 19 pushes the supporting rod 16 toward the direction close to the output shaft 8 .

[0035] When the sliding rod 15 is at the uppermost end of the first inclined block 18, the first heat dissipation hole intersects with the second heat dissipation hole, that is, at this time the motor 1 is not running and the motor 1 does not need to dissipate heat. The support rod 16 is in a position close to the output shaft 8. When the motor 1 runs and needs to dissipate heat, the rotating plate 7 rotates. At this time, the first heat dissipation hole is communicated with the second heat dissipation hole, the sliding rod 15 moves downward, and under the action of the spring 20, the support rod 16 moves to a position away from the output shaft 8. Thus, when the motor 1 is not in use, the support rod 16 pushes the clamping plate 6 so that the clamping plate 6 is stuck on the surface of the output shaft 8 to prevent dust from falling into the motor 1. When the motor 1 is in use, the clamping plate 6 is pushed by the output shaft 8 to prevent the clamping plate 6 from affecting the normal operation of the motor 1.

[0036] The support rod 16 is connected to the housing 2 through a spring 20.

[0037] The clamping plate 6 is divided into two units.

Claims

1. A silent and efficient voice coil motor, the motor (1) is provided with an output shaft (8), characterized in that, The motor (1) is wrapped with a housing (2), and the housing (2) is wrapped with sound insulation cotton (3). A rotatable threaded rod (4) is arranged on the housing (2), and the threaded rod (4) passes through a pressure plate (5). The threaded rod (4) and the pressure plate (5) are threadedly matched, and one end of the threaded rod (4) extends outside the housing (2). When the threaded rod (4) rotates, the pressure plate (5) is pressed on the motor (1). A through hole is opened on the housing (2), and the output shaft (8) passes through the through hole. A clamping plate (6) is arranged in the through hole, and the clamping plate (6) ) is tightly attached to the surface of the output shaft (8), the card plate (6) is a split structure, and when the output shaft (8) rotates, the card plate (6) moves in a direction away from the output shaft (8) and is separated from the output shaft (8), a first heat dissipation hole is provided on the end of the shell (2) away from the through hole, a rotating plate (7) is also provided on the end of the shell (2) away from the through hole, a second heat dissipation hole is provided on the rotating plate (7), and when the motor (1) is running, the rotating plate (7) rotates so that the first heat dissipation hole is connected to the second heat dissipation hole.

2. The silent and efficient voice coil motor according to claim 1, characterized in that, The card plate (6) is provided with an inclined groove (9) inside, a toggle tooth (10) is fixedly connected to the output shaft (8), the toggle tooth (10) extends into the inclined groove (9), and when the output shaft (8) rotates, the toggle tooth (10) slides in the inclined groove (9) and pushes the card plate (6) away from the output shaft (8), a mounting groove (11) is provided in the housing (2), the card plate (6) is arranged in the mounting groove (11), a positioning rod (12) is fixedly connected in the mounting groove (11), a slot (13) is provided on the card plate (6), and the positioning rod (12) is inserted into the slot (13), so that the card plate (6) slides along a predetermined direction.

3. The silent and efficient voice coil motor according to claim 2, wherein, A horizontally sliding support rod (16) is arranged in the housing (2), a fixed block (17) is fixedly connected to the rotating plate (7), a vertical sliding rod (15) is arranged in the housing (2), the lower end of the sliding rod (15) is placed on the fixed block (17), and when the rotating plate (7) rotates, the sliding rod (15) moves upward, thereby causing the support rod (16) to slide.

4. The silent and efficient voice coil motor according to claim 3, characterized in that, A magnetic block (14) is provided on the inner wall of the installation groove (11), and the magnetic block (14) attracts the card plate (6).

5. The silent and efficient voice coil motor according to claim 4, wherein, A first inclined block (18) is fixedly connected to the fixed block (17), the lower end of the sliding rod (15) is pressed against a lower end of the first inclined block (18), and when the rotating plate (7) rotates, the sliding rod (15) slides upward along the first inclined block (18).

6. The silent and efficient voice coil motor according to claim 5, wherein A second inclined block (19) is fixedly connected to the sliding rod (15). When the sliding rod (15) slides upward, the second inclined block (19) pushes the support rod (16) toward the direction close to the output shaft (8).

7. The silent and efficient voice coil motor according to claim 6, wherein The support rod (16) is connected to the housing (2) via a spring (20).

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