CN220273415U

CN220273415U - Voice coil motor and valve brake

Info

Publication number: CN220273415U
Application number: CN202321477683.0U
Authority: CN
Inventors: 徐传栋; 万磊; 黄华
Original assignee: Akribis Systems (shanghai) Co ltd
Current assignee: Akribis Systems (shanghai) Co ltd
Priority date: 2023-06-11
Filing date: 2023-06-11
Publication date: 2023-12-29
Anticipated expiration: 2033-06-11

Abstract

The utility model provides a voice coil motor and a valve brake, comprising: the mounting seat is provided with a mounting cavity penetrating through the bottom surface of the mounting seat; the rotor is connected with the mounting seat and extends along the length direction of the mounting seat, is connected with an external power supply and generates magnetic force after being electrified; the stator is arranged above the mounting cavity, sleeved on the periphery of the rotor and driven by magnetic force to reciprocate along the extending direction of the rotor; the stator is connected to the mounting seat through the sliding table, and the sliding table synchronously moves along with the stator; the reading head is arranged in the mounting cavity to detect and feed back the moving stroke of the stator. This voice coil motor converts the electric energy into magnetic force kinetic energy through the active cell, promotes stator and slip table and removes, at this in-process, the reading head sets up in the installation cavity of mount pad to hide the reading head in this device inside, with this unique structural layout design furthest reduced the shared space of this voice coil motor, make it can be applicable to narrower working space.

Description

Voice coil motor and valve brake

Technical Field

The application relates to the technical field of driving motors, in particular to a voice coil motor and a valve brake.

Background

The direct-drive motor has wide application value in the fields of communication, aerospace, precision machining detection, laser cutting and the like all the time, but along with the continuous improvement of the production and machining precision requirements, the lighter and more flexible voice coil motor is gradually replacing the traditional direct-drive motor as the core of a plurality of precision machining elements.

In order to make the voice coil motor applicable to more precise equipment, in recent years, related technicians have been struggling to further reduce the volume of the voice coil motor so as to make the voice coil motor capable of being installed in a narrower and more compact equipment structure, but the reading head in the existing voice coil motor is installed on the outer side of the shell of the voice coil motor so as to detect the specific moving distance of the motor, but for some narrower spaces, the position of the reading head often makes the voice coil motor difficult to enter the working space or can not work normally after entering, so that the application range of the voice coil motor is limited in many cases.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problems that the reading head is arranged outside the voice coil motor shell and the occupied space is increased in the prior art, and provides the voice coil motor and the valve brake with smaller volume, wherein the voice coil motor and the valve brake are embedded in the voice coil motor.

In order to solve the above technical problems, the present utility model provides a voice coil motor, including: the mounting seat is provided with a mounting cavity penetrating through the bottom surface of the mounting seat; the rotor is connected with the mounting seat and extends along the length direction of the mounting seat, is connected with an external power supply and generates magnetic force after being electrified; the stator is arranged above the mounting cavity and sleeved on the periphery of the rotor, and the stator moves back and forth along the extending direction of the rotor under the pushing of the magnetic force; the stator is connected to the mounting seat through the sliding table, and the sliding table synchronously moves along with the stator; and the reading head is arranged in the mounting cavity and is used for detecting and feeding back the moving stroke of the stator.

In an embodiment of the utility model, the mounting seat includes a bearing portion and a connecting portion connected vertically to each other, the bearing portion extends along a horizontal direction, the stator and the sliding table are connected to the bearing portion, and the mover is connected to the connecting portion.

In one embodiment of the utility model, a sliding groove is arranged along the length direction of the sliding table at the contact position of the bearing part and the sliding table, and a sliding rail matched with the sliding groove is arranged on the lower surface of the sliding table.

In one embodiment of the utility model, the mounting seat is further provided with a limiting block.

In one embodiment of the utility model, the mover surface surrounds a copper coil.

In one embodiment of the utility model, the stator is a permanent magnet.

In one embodiment of the present utility model, the mover, the stator and the sliding table are sequentially disposed along the mounting seat.

In order to solve the above technical problems, the present utility model provides a valve brake, comprising: above-mentioned voice coil motor, valve box, power and controller, voice coil motor the power with the controller all set up in inside the valve box.

In one embodiment of the utility model, the power supply is connected with the mover, and the controller is respectively connected with the reading head and the power supply.

In one embodiment of the utility model, a switch is arranged on the surface of the valve box body, and the switch is connected with the power supply.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the voice coil motor, electric energy is converted into magnetic kinetic energy through the rotor, and the stator and the sliding table are pushed to move.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

Fig. 1 is a perspective view of a voice coil motor in accordance with a preferred embodiment of the present utility model;

FIG. 2 is a perspective view of the mount of FIG. 1 and a mover;

fig. 3 is a schematic bottom view of the stator and the sliding table in fig. 1.

Description of the specification reference numerals: 100. a mounting base; 110. a carrying part; 111. a chute; 112. a limiting block; 113. a mounting cavity; 120. a connection part; 200. a mover; 300. a stator; 400. a sliding table; 410. a slide rail; 420. a linkage part; 430. a support section; 440. a functional unit; 500. a reading head.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Example 1

Referring to fig. 1 to 3, a voice coil motor includes: the mounting seat 100, the mounting seat 100 is provided with a mounting cavity 113 penetrating through the bottom surface thereof; the mover 200 is connected with the mounting seat 100 and extends along the length direction of the mounting seat 100, and is connected with an external power supply to generate magnetic force after being electrified; the stator 300 is arranged above the mounting cavity 113 and sleeved on the periphery of the mover 200, and the stator 300 moves back and forth along the extending direction of the mover 200 under the pushing of the magnetic force; the sliding table 400 is connected to the mounting seat 100 through the sliding table 400, and the sliding table 400 moves synchronously with the stator 300; a reading head 500, the reading head 500 is disposed in the mounting cavity 113 to detect and feed back the moving stroke of the stator 300.

According to the voice coil motor, electric energy is converted into magnetic kinetic energy through the rotor 200, the stator 300 and the sliding table 400 are pushed to move, and in the process, the reading head 500 is arranged in the mounting cavity 113 of the mounting seat 100, so that the reading head 500 is hidden in the voice coil motor, the space occupied by the voice coil motor is reduced to the greatest extent through the unique structural layout design, and the voice coil motor can be suitable for a narrower working space or the assembly processing of small-volume precise elements.

Referring to fig. 1, the mounting base 100 includes a bearing portion 110 and a connecting portion 120 that are connected vertically, the bearing portion 110 extends in a horizontal direction, the stator 300 and the sliding table 400 are connected to the bearing portion 110, and the mover 200 is connected to the connecting portion 120. In this embodiment, the bearing portion 110 is configured as a rectangular steel element, the upper surface thereof is horizontal, the connecting portion 120 is connected to one side of the broadside of the bearing portion 110, and extends vertically upwards from the upper surface of the bearing portion 110, specifically, in this embodiment, the connecting portion 120 is configured as a half-track steel element, the circular arc surface of which faces upwards, and the diameter of the circular arc surface is not smaller than the maximum width of the cross section of the mover 200, so as to ensure the stability of the connection between the two elements, and further, the connecting portion 120 and the bearing portion 110 are fixedly connected and are integrally configured.

As shown in fig. 1 and 2, a sliding groove 111 is provided along a length direction of the sliding table 400 at a contact portion of the bearing portion 110 and the sliding table 400. In this embodiment, the sliding groove 111 is disposed at the other end of the bearing portion 110 opposite to the contact portion and is fixedly connected to the center of the upper surface of the bearing portion 110, and further, the sliding groove 111 extends along the length direction of the bearing portion 110, so as to provide a moving space for the sliding table 400 and limit and guide the movement of the sliding table 400.

Referring to fig. 2, the mounting base 100 is further provided with a stopper 112. In this embodiment, two limiting blocks 112 are included, and are separately disposed at two corners of the chute 111 towards the direction of the connecting portion 120, so as to buffer and limit the sliding table 400, so that extrusion damage to the stator 300 and the mover 200 caused by excessive movement of the sliding table 400 during movement is avoided, and meanwhile, the sliding table 400 itself can be buffered and shock-absorbed. In this embodiment, the stopper 112 is preferably a cylindrical member made of elastic rubber, and in other embodiments, the stopper 112 may be other members with elastic buffering function, such as sponge, compression spring, etc., or may be other shapes or other numbers according to actual needs, which is not particularly limited in the present utility model.

Referring to fig. 2, the mounting cavity 113 is disposed between the connecting portion 120 and the chute 111 along the length direction of the mounting base 100, preferably a rectangular through hole, and the working end of the reading head 500 can detect the actual moving stroke and frequency of the stator 300 through the upper surface of the mounting cavity 113. In this embodiment, a positioning buckle is disposed in the mounting cavity 113 to firmly connect the reading head 500 to the mounting cavity 113.

Referring to fig. 1 and 2, the surface of the mover 200 surrounds a copper coil. In this embodiment, the mover 200 is configured as a cylindrical element extending along the extending direction of the mounting base 100, and is internally connected with an external power source, and when the mover 200 and the copper coil on the surface thereof work together to convert electric energy into magnetic field kinetic energy, so as to perform subsequent work.

Referring to fig. 1, the stator 300 is a permanent magnet, in this embodiment, the stator 300 is configured as a cylindrical element matching the shape of the mover 200, further, the cross-sectional diameter of the stator 300 is larger than that of the mover 200, in this embodiment, the stator 300 is sleeved on the periphery of the mover 200 and moves along the extending direction of the mover 200.

Referring to fig. 1 and 3, a sliding rail 410 matched with the sliding groove 111 is provided on the lower surface of the sliding table 400, and the mover 200, the stator 300 and the sliding table 400 are sequentially disposed along the mounting seat 100. In this embodiment, the sliding table 400 includes a linkage portion 420, a supporting portion 430 and a functional portion 440, wherein the sliding rail 410 is disposed on a lower surface of the functional portion 440, the functional portion 440 is configured as a rectangular steel plate with a certain thickness, an upper surface of the functional portion is configured to hold a component to be processed and enable the component to move synchronously therewith, further, the sliding rail 410 is disposed at a center of the functional portion 440, and when the sliding table 400 is connected with the mounting base 100, the sliding rail 410 is correspondingly embedded in the sliding table 400 and can move along an extending direction of the sliding table 400.

Referring to fig. 1 and 3, the linkage part 420 is disposed at a side of the functional part 440 facing the stator 300, preferably, a half-runner type element having a shape matching that of the stator 300, and the functional part 440 and the stator 300 are respectively connected to opposite sides of the linkage part 420 along a length direction of the mounting base 100, so that the functional part 440 and the stator 300 are connected, and the support part 430 is connected to a lower end of the linkage part 420 and supported on an upper surface of the mounting base 100 for maintaining stability of the entire sliding table 400. Further, in the present embodiment, the linkage part 420, the supporting part 430 and the functional part 440 are fixedly connected and are integrally provided.

The working process and principle of the voice coil motor in this embodiment are described below:

when the voice coil motor is electrified, the mover 200 rapidly converts electric energy into magnetic field kinetic energy, and starts to push the stator 300 to reciprocate along the extending direction of the mounting seat 100, in the process, the sliding table 400 synchronously moves along with the stator 300, and the sliding rail 410 on the lower surface of the sliding table 400 slides inside the sliding groove 111, so that the limiting block 112 further limits and protects the movement process. In the above process, most importantly, the stator 300 moves on the upper surface of the mounting cavity 113, and the reading head 500 can detect the actual moving parameter of the stator 300 through the mounting cavity 113 and feed back in time, so that an operator can adjust the working state of the voice coil motor in time according to the actual situation.

In summary, the structure is different from the assembly method of arranging the reading head 500 outside the motor in the past, which reduces the volume of the voice coil motor to the maximum extent, reduces the occupied space, and makes the voice coil motor suitable for narrower and more precise working occasions.

Example two

The embodiment provides a valve brake, including voice coil motor, valve box, power and controller in embodiment one, voice coil motor the power with the controller all set up in inside the valve box, the power is connected the active cell 200, the controller is connected respectively the reading head 500 with the power, valve box surface is equipped with the switch, the switch is connected the power. In this embodiment, the operator controls the opening and closing of the valve brake through the switch, specifically: when the switch is turned on, the power supply starts to supply power to the mover 200, so that the mover 200 generates magnetic force to push the voice coil motor to start working, the reading head 500 is connected with the controller, and can feed back the actual movement condition of the stator 300 in real time and convert the actual movement condition into an electric signal to be reflected into the controller, and at the moment, an operator can adjust the power supply condition of the power supply, so that the movement frequency of the stator 300 is changed, and the valve brake is suitable for valve brake of different working occasions.

It is apparent that the above examples are given for clarity of illustration and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. A voice coil motor, characterized in that: comprising the following steps:

the mounting seat is provided with a mounting cavity penetrating through the bottom surface of the mounting seat;

the rotor is connected with the mounting seat and extends along the length direction of the mounting seat, is connected with an external power supply and generates magnetic force after being electrified;

the stator is arranged above the mounting cavity and sleeved on the periphery of the rotor, and the stator moves back and forth along the extending direction of the rotor under the pushing of the magnetic force;

the stator is connected to the mounting seat through the sliding table, and the sliding table synchronously moves along with the stator;

and the reading head is arranged in the mounting cavity and is used for detecting and feeding back the moving stroke of the stator.

2. The voice coil motor of claim 1, wherein: the mounting seat comprises a bearing part and a connecting part which are connected vertically, the bearing part extends along the horizontal direction, the stator and the sliding table are connected with the bearing part, and the rotor is connected with the connecting part.

3. The voice coil motor of claim 2, wherein: the sliding groove is formed in the contact position of the bearing part and the sliding table along the length direction of the sliding groove, and a sliding rail matched with the sliding groove is arranged on the lower surface of the sliding table.

4. The voice coil motor of claim 1, wherein: the mounting seat is also provided with a limiting block.

5. The voice coil motor of claim 1, wherein: the mover surface surrounds the copper coil.

6. The voice coil motor of claim 1, wherein: the stator is a permanent magnet.

7. The voice coil motor of claim 1, wherein: the rotor, the stator and the sliding table are sequentially arranged along the mounting seat.

8. A valve actuator, characterized in that: comprising the following steps: the voice coil motor, valve housing, power supply and controller of any one of claims 1-7, all disposed inside the valve housing.

9. The valve actuator of claim 8, wherein: the power supply is connected with the rotor, and the controller is respectively connected with the reading head and the power supply.

10. The valve actuator of claim 8, wherein: the valve box body surface is equipped with the switch, the switch is connected the power.