Voice coil motor

Abstract

The utility model discloses a voice coil motor, which relates to the technical field of voice coil motors and comprises a magnet mounting top plate and a magnet mounting bottom plate, two symmetrically arranged magnet supporting blocks are arranged between the magnet mounting top plate and the magnet mounting bottom plate, and a magnet middle block is arranged between the two magnet supporting blocks. A coil is arranged on the magnet middle block, the coil comprises a coil body and a coil mounting frame, the coil mounting frame is sleeved on the magnet middle block, and the coil body is wound on the coil mounting frame. After being electrified, the coil can translate on the magnet middle block, anti-collision rubber pads are arranged on the two sides of the coil installation frame of the coil, when the coil moves and collides with the magnet supporting blocks, the risk that the coil is damaged can be effectively reduced, a guide hole is formed in the bottom of the coil installation frame of the device, and a guide rod is fixed between the magnet supporting blocks, so that the coil is prevented from being damaged. By arranging the guide rod and the guide hole, the stability of the coil during movement can be improved, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of voice coil motor technology, specifically a voice coil motor. Background Technology

[0002] Voice coil motors (VCOs) are named for their structure, which resembles the voice coil of a horn. They are widely used in medical, semiconductor, aerospace, and automotive fields due to their high-frequency response and high precision. A VCO is a DC motor that converts electrical energy into mechanical energy. It is mainly divided into linear and oscillating types, utilizing the force exerted on a current-carrying conductor within a magnetic field generated by a permanent magnet to produce a regular linear or finite-angle oscillation.

[0003] With the development of science and technology, especially in optoelectronic packaging, complex robotic arms, lithography machines, and other high-precision, multi-dimensional, complex motion fields, multi-degree-of-freedom voice coil motors have become a research focus. Chinese patent publication number CN105827096A proposes a voice coil motor comprising a housing, a stator, and a mover. The stator is fixedly connected to the housing and includes an iron yoke and multiple permanent magnets fixed to the yoke. One end of the mover is positioned between pole pairs formed by the multiple permanent magnets, and the other end has an output shaft extending through the housing. The output shaft, driven by the mover, simultaneously performs linear and rotary motion, thereby achieving simultaneous output... The thrust and torque are increased, improving the platform's operating speed and thus processing efficiency. This application only requires one motor to achieve multi-dimensional motion, simplifying the structure of complex multi-dimensional motion platforms and making it suitable for platforms with multi-dimensional precision motion. At the same time, the voice coil motor of this application, by eliminating the intermediate transmission mechanism, is small in size, has a light mover, and a fast dynamic response speed, which also avoids the superposition of motion errors in different dimensions, facilitating the achievement of high precision. After studying the existing technology and the aforementioned patents, it was found that the coils of existing voice coil motors lack a protective structure, making them prone to collision and damage with the housing during movement. Therefore, this utility model proposes a voice coil motor. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a voice coil motor.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a voice coil motor, comprising a magnet mounting top plate and a magnet mounting bottom plate, wherein two symmetrically arranged magnet support blocks are disposed between the magnet mounting top plate and the magnet mounting bottom plate, and a magnet intermediate block is installed between the two magnet support blocks. A coil is disposed on the magnet intermediate block, the coil comprising a coil body and a coil mounting frame, the coil mounting frame being sleeved on the magnet intermediate block, the coil body being wound around the coil mounting frame, an adapter block being fixedly installed on one side of the coil mounting frame, and magnets being disposed on both the upper and lower sides of the coil, the magnets comprising an upper magnet and a lower magnet, the upper magnet being fixed on the magnet mounting top plate, and the lower magnet being fixed on the magnet mounting bottom plate.

[0008] Preferably, one side of the adapter block is provided with a mounting hole for connecting to the coil mounting bracket, and the coil mounting bracket is provided with a second mounting hole in the middle, with connecting screws passing through the interior of the mounting hole and the second mounting hole.

[0009] Preferably, a mounting groove is provided on one side of the magnet support block.

[0010] Preferably, anti-collision pads are fixedly connected to both sides of the coil mounting bracket. After being energized, the coil can move horizontally on the middle block of the magnet. The anti-collision pads on both sides of the coil mounting bracket can effectively reduce the risk of damage when the coil moves and collides with the magnet support block.

[0011] Preferably, the bottom of the coil mounting bracket is provided with a guide hole, and a guide rod is fixedly connected between the two magnet support blocks. The guide rod can be adapted to be inserted into the inside of the guide hole. The bottom of the coil mounting bracket of this device is provided with a guide hole, and the guide rod is fixed between the magnet support blocks. The setting of the guide rod and the guide hole can improve the stability when the coil moves and improve the practicality of the device.

[0012] Preferably, the magnet is a permanent magnet.

[0013] Beneficial effects:

[0014] Compared with existing technologies, this voice coil motor has the following advantages:

[0015] After being energized, the coil of this invention can move horizontally on the middle block of the magnet. Anti-collision pads are set on both sides of the coil mounting bracket. When the coil moves and collides with the magnet support block, the risk of damage can be effectively reduced. Furthermore, the bottom of the coil mounting bracket of this device is provided with guide holes, and guide rods are fixed between the magnet support blocks. The setting of guide rods and guide holes can improve the stability of the coil when it moves and improve the practicality of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the installation structure of the adapter block of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] Figure 3 This is a side view of the structure of this utility model.

[0020] In the picture:

[0021] 1. Magnet mounting top plate; 2. Magnet mounting bottom plate; 3. Magnet support block; 4. Magnet middle block; 5. Coil; 6. Adapter block; 7. Magnet; 8. Connecting screw; 9. Anti-collision pad; 501. Coil body; 502. Coil mounting bracket; 701. Upper magnet; 702. Lower magnet; 601. Mounting hole; 5021. Mounting hole two; 301. Mounting groove; 5022. Guide hole; 302. Guide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3 As shown, this utility model provides a technical solution: a voice coil motor, including a magnet mounting top plate 1 and a magnet mounting bottom plate 2. Two symmetrically arranged magnet support blocks 3 are provided between the magnet mounting top plate 1 and the magnet mounting bottom plate 2. A magnet intermediate block 4 is installed between the two magnet support blocks 3. The magnet intermediate block 4 is the yoke. A coil 5 is provided on the magnet intermediate block 4. The coil 5 includes a coil body 501 and a coil mounting frame 502. The coil mounting frame 502 is sleeved on the magnet intermediate block 4. The coil body 501 is wound on the coil mounting frame 502. An adapter block 6 is fixedly installed on one side of the coil mounting frame 502. Magnets 7 are provided on both the upper and lower sides of the coil 5. The magnet 7 includes an upper magnet 701 and a lower magnet 702. The upper magnet 701 is fixed on the magnet mounting top plate 1, and the lower magnet 702 is fixed on the magnet mounting bottom plate 2.

[0024] Please refer to the following carefully. Figure 2 The adapter block 6 has a mounting hole 601 on one side that connects to the coil mounting bracket 502. The coil mounting bracket 502 has a second mounting hole 5021 in the middle. A connecting screw 8 passes through the interior of the mounting hole 601 and the second mounting hole 5021.

[0025] Please refer to the following carefully. Figure 2 and Figure 3 Anti-collision pads 9 are fixedly connected to both sides of the coil mounting bracket 502. After being powered on, the coil 5 can move horizontally on the middle block 4 of the magnet. The anti-collision pads 9 on both sides of the coil mounting bracket 502 can effectively reduce the risk of damage when the coil 5 moves and collides with the magnet support block. The bottom of the coil mounting bracket 502 is provided with a guide hole 5022. A guide rod 302 is fixedly connected between the two magnet support blocks 3. The guide rod 302 can be inserted into the inside of the guide hole 5022. The bottom of the coil mounting bracket 502 of this device is provided with a guide hole 5022. A guide rod 301 is fixed between the magnet support blocks 3. The setting of the guide rod 301 and the guide hole 5022 can improve the stability of the coil 5 when it moves and improve the practicality of the device.

[0026] The magnet support block 3 in this application has an installation groove 301 on one side, and the magnet 7 is a permanent magnet.

[0027] Working principle: When the coil 5 moves horizontally on the middle block 4 of the magnet after being energized, anti-collision pads 9 are set on both sides of the coil mounting bracket 502 in the coil 5. When the coil 5 moves and collides with the magnet support block, it can effectively reduce the risk of damage. In addition, the bottom of the coil mounting bracket 502 of the device is provided with a guide hole 5022. A guide rod 301 is fixed between the magnet support blocks 3. The guide rod 301 and the guide hole 5022 play a guiding role, which can improve the stability of the coil 5 when it moves.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A voice coil motor, characterized in that: The device includes a magnet mounting top plate (1) and a magnet mounting bottom plate (2). Two symmetrically arranged magnet support blocks (3) are provided between the magnet mounting top plate (1) and the magnet mounting bottom plate (2). A magnet intermediate block (4) is installed between the two magnet support blocks (3). A coil (5) is provided on the magnet intermediate block (4). The coil (5) includes a coil body (501) and a coil mounting frame (502). The coil mounting frame (502) is sleeved on the magnet intermediate block (4). The coil body (501) is wound on the coil mounting frame (502). A transition block (6) is fixedly installed on one side of the coil mounting frame (502). Magnets (7) are provided on both the upper and lower sides of the coil (5). The magnets (7) include an upper magnet (701) and a lower magnet (702). The upper magnet (701) is fixed on the magnet mounting top plate (1), and the lower magnet (702) is fixed on the magnet mounting bottom plate (2). Anti-collision pads (9) are fixedly connected to both sides of the coil mounting bracket (502); The bottom of the coil mounting bracket (502) is provided with a guide hole (5022), and a guide rod (302) is fixedly connected between the two magnet support blocks (3). The guide rod (302) can be adapted to be inserted into the inside of the guide hole (5022).

2. A voice coil motor according to claim 1, characterized in that: The adapter block (6) has a mounting hole (601) on one side that connects to the coil mounting bracket (502). The coil mounting bracket (502) has a second mounting hole (5021) in the middle. A connecting screw (8) passes through the interior of the mounting hole (601) and the second mounting hole (5021).

3. A voice coil motor according to claim 1, characterized in that: The magnet support block (3) has a mounting groove (301) on one side.

4. A voice coil motor according to claim 1, characterized in that: The magnet (7) is a permanent magnet.

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