CN219107271U

CN219107271U - Double-guide-rail voice coil motor

Info

Publication number: CN219107271U
Application number: CN202222734253.4U
Authority: CN
Inventors: 王云高
Original assignee: Kunshan Tongmao Electronics Co ltd
Current assignee: Kunshan Tongmao Electronics Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-05-30
Anticipated expiration: 2032-10-18

Abstract

The utility model relates to the technical field of voice coil motors, in particular to a double-guide rail voice coil motor, which comprises: a fixed plate is arranged on one side of the base, and a sliding groove is arranged at the bottom end of the base; the voice coil motor body comprises a stator fixedly connected with the fixed plate and a rotor arranged in the stator in a sliding manner; the sliding mechanism is installed on the base through the sliding seat and connected with the voice coil motor body, a sliding rod is arranged in the middle of the top end of the sliding seat, double guide rails are arranged on two sides of the sliding rod, the sliding seat is in sliding connection with the double guide rails, after a rotor is connected with a connecting wire and electrified, the sliding mechanism slides outwards along the direction of the double guide rails, the double guide rails are beneficial to being more stable during sliding, the sliding stability is improved, the voice coil motor body is kept to be stable in operation, the device is easy to operate, the sliding stability is improved, and the practicability is strong.

Description

Double-guide-rail voice coil motor

Technical Field

The utility model belongs to the technical field of voice coil motors, and particularly relates to a double-guide-rail voice coil motor.

Background

Voice Coil Motor (Voice Coil Actuator/Voice Coil Motor) is a device that converts electrical energy into mechanical energy and achieves linear and limited-swing-angle motion. And a device for generating regular motion by utilizing the interaction between the magnetic field from the permanent magnet steel and the magnetic pole in the magnetic field generated by the electrified coil conductor.

The working principle of the voice coil motor is based on the ampere force principle, namely that an electrified conductor is placed in a magnetic field to generate electromagnetic force. The magnitude of the electromagnetic force depends on the strength of the magnetic field and the current. The calculation formula of the electromagnetic force is as follows: f=bll. Wherein B is the magnetic flux density (W/m 2) of the magnetic field; i is the total current (amperes) in the coil conductor; l is the cutting length (meters) of the conductor in the magnetic field; f is the electromagnetic force (bovine) acting on the coil conductor. The direction of the electromagnetic force can be judged according to the left hand rule, namely, the left hand is opened, the thumb is perpendicular to the other four fingers, the magnetic force line passes through the palm center, the direction of the four fingers represents the direction of the current, and the direction of the thumb is the direction of the electromagnetic force.

Compared with a U-shaped linear motor and a flat linear motor, the voice coil motor can provide better high-frequency response characteristic, can do high-speed reciprocating linear motion, and is particularly suitable for a closed-loop servo control system with short stroke. Therefore, the voice coil motor is mainly applied to small-stroke, high-speed and high-acceleration motions and is suitable for a narrow space. Because of these points, voice coil motors are widely used in medical, semiconductor, aerospace, automotive, and other fields, including valve brakes, small precision replacement gauges, vibration platforms, and active vibration damping systems.

The Chinese patent with publication number CN105896798B discloses a voice coil motor, which has the technical scheme that: including the casing, be equipped with the active cell in the casing, the winding has the coil on the active cell, is equipped with the opening on the terminal surface of casing, and the active cell slides and sets up in the opening, is equipped with the permanent magnet in the casing, is located the opening part of casing on the casing and is equipped with the end cover, is equipped with the traveller on the active cell, and the traveller slides with the casing and is connected and stretches out the casing. However, the sliding angle of the rotor of the existing voice coil motor in the stator is easy to deviate, the sliding stability is poor, and the operation accuracy of the voice coil motor is not facilitated, so that the problem is solved by the double-guide-rail voice coil motor.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a double-guide-rail voice coil motor for solving the problems in the prior market, which are presented in the background technology.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a dual-rail voice coil motor comprising:

a fixed plate is arranged on one side of the base, and a sliding groove is arranged at the bottom end of the base;

the voice coil motor body comprises a stator fixedly connected with the fixed plate and a rotor arranged in the stator in a sliding manner;

the sliding mechanism is installed on the base through a sliding table seat and connected with the voice coil motor body, a sliding rod is installed in the middle of the top end of the sliding table seat, double guide rails are arranged on two sides of the sliding rod, and the sliding table is in sliding connection with the double guide rails.

Through above-mentioned technical scheme, after the active cell is connected the circular telegram with the connecting wire, outwards slide along double guide rail direction, and double guide rail is useful for being more stable when sliding, improves sliding stability, keeps voice coil motor body operation stable, and the practicality is strong.

As a preferable scheme of the utility model, the bottom end of the mover is provided with the hook which is arranged in the chute, and the hook is connected with the other end of the chute through the reset spring.

By means of the technical scheme, the return spring is beneficial to restoring the outward sliding rotor to the original position by inward sliding, the rotor is convenient to reset automatically, and the practicability of the voice coil motor body is improved.

As a preferable scheme of the utility model, the sliding table is connected with one end of the rotor, a first sliding groove and a second sliding groove are arranged at the bottom end of the sliding table, and the second sliding grooves are arranged on two sides of the first sliding groove.

As a preferable scheme of the utility model, the double guide rail comprises a first guide rail and a second guide rail, and the second guide rail is arranged on two sides of the first guide rail.

As a preferable mode of the utility model, the first guide rail and the slide bar are arranged in the first chute, and the second guide rail is arranged in the second chute.

Through above-mentioned technical scheme, the height of second spout is less than the height of first spout, and first spout and first guide rail and slide bar looks adaptation, second spout and second guide rail looks adaptation.

As a preferable mode of the utility model, the sliding table is provided with a plurality of heat dissipation holes.

Through above-mentioned technical scheme, the louvre is useful for in time discharging the heat that voice coil motor body operation in-process produced, carries out the cooling heat dissipation, guarantees that the operation of voice coil motor body is stable, avoids voice coil motor body to influence the work precision because of the temperature is higher.

As a preferable scheme of the utility model, the side edge of the sliding table seat is provided with a caulking groove, and a laser encoder is arranged in the caulking groove.

Through the technical scheme, the laser encoder is beneficial to timely recording the moving distance of the rotor and ensures the operation precision of the voice coil motor body.

Compared with the prior art, the utility model has the beneficial effects that:

after the mover is connected with the connecting wire and electrified, the mover slides outwards along the direction of the double guide rails, the double guide rails are arranged to be beneficial to being more stable when the mover slides, the sliding stability is improved, the voice coil motor body is kept to operate stably, the practicability is strong, the device is simple to operate, the sliding stability is improved, and the practicability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a voice coil motor of the present utility model;

FIG. 2 is a rear view of a voice coil motor of the present utility model;

FIG. 3 is a left side view of the voice coil motor of the present utility model;

fig. 4 is a top view of the voice coil motor of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below in connection with the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides the following examples:

a dual-rail voice coil motor comprising: base 1, voice coil motor body 2 and slide mechanism 3 sliding connection, voice coil motor body 2 and slide mechanism 3 all install on base 1, fixed plate 11 is installed to base 1 one side, the base 1 bottom is equipped with spout 13, spout 13 is rectangular, voice coil motor body 2 includes stator 21 with fixed plate 11 fixed connection, rotor 22 includes coil and bobbin, the coil is twined on the bobbin, and locate the gliding rotor 22 in the stator 21, stator 21 is the magnet steel, slide mechanism 3 passes through slide pedestal 31 and installs on base 1 and be connected with voice coil motor body 2, slide pedestal 31 top mid-mounting has slide bar 32, slide bar 32 both sides are located to double track 4, slide table 35 and double track 4 sliding connection, stator 21 is connected with connecting wire 23 after the circular telegram, outwards slide along double track 4 direction, double track 4 is useful for more stable when sliding, improve sliding stability, keep voice coil motor body 2 stable operation, the practicality is strong.

As a further improvement of the utility model, the bottom end of the rotor 22 is provided with the hook which is arranged in the chute 13, the hook is connected with the other end of the chute 13 through the return spring 12, and the return spring 12 is beneficial to restoring the outwards sliding rotor 22 to the original position by inwards sliding, so that the rotor 22 is convenient to self-reset, and the practicability of the voice coil motor body 2 is improved.

As a further improvement of the utility model, a sliding table 35 is connected with one end of the mover 22, a first sliding groove and a second sliding groove are arranged at the bottom end of the sliding table 35, the second sliding groove is arranged at two sides of the first sliding groove, and the second sliding groove is communicated with the first sliding groove.

As a further improvement of the present utility model, the dual guide rail 4 includes a first guide rail 33 and a second guide rail 34, the first guide rail 33 and the second guide rail 34 are rectangular, at least two first guide rails 33 and second guide rails 34 are provided, the second guide rail 34 is arranged at two sides of the first guide rail 33, the first guide rail 33 and the slide bar 32 are arranged in a first slide groove, the second guide rail 34 is arranged in a second slide groove, the height of the second slide groove is lower than that of the first slide groove, the first guide rail 33 is consistent with that of the slide bar 32, the first slide groove is matched with the first guide rail 33 and the slide bar 32, and the second slide groove is matched with the second guide rail 34.

As a further improvement of the utility model, the sliding table 35 is provided with a plurality of heat dissipation holes 36, and the heat dissipation holes 36 are beneficial to timely discharging heat generated in the operation process of the voice coil motor body 2, cooling and heat dissipation are performed, so that the stable operation of the voice coil motor body 2 is ensured, and the influence of the voice coil motor body 2 on the working precision due to higher temperature is avoided.

As a further improvement of the utility model, the side edge of the sliding table seat 31 is provided with a caulking groove, a laser encoder 37 is arranged in the caulking groove, the laser encoder 37 is beneficial to timely recording the moving distance of the rotor 22, the operation precision of the voice coil motor body 2 is ensured, and the precision of the voice coil motor body 2 is improved.

After the rotor 22 is electrified through the connecting wire 23, the rotor 22 slides outwards in the stator 21 along the direction of the double guide rails 4 through the sliding table 35, the rotor 22 is driven to slide inwards to the original position through the restoration of the reset spring 12, the double guide rails 4 are beneficial to being more stable when the rotor 22 slides, the sliding stability is improved, the voice coil motor body 2 is kept to operate stably, the practicability is strong, the device is easy to operate, the sliding stability is improved, the practicability is strong, the internal structure is reasonable in design, the safety coefficient and the reliability are high, and better service and market development can be achieved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-rail voice coil motor, comprising:

a fixed plate (11) is arranged on one side of the base (1), and a sliding groove (13) is arranged at the bottom end of the base;

the voice coil motor body (2) comprises a stator (21) fixedly connected with the fixed plate (11) and a rotor (22) arranged in the stator (21) in a sliding way;

the sliding mechanism (3) is installed on the base (1) through a sliding table seat (31) and is connected with the voice coil motor body (2), a sliding rod (32) is installed in the middle of the top end of the sliding table seat (31), the double guide rails (4) are arranged on two sides of the sliding rod (32), and the sliding table (35) is in sliding connection with the double guide rails (4).

2. The double-guide-rail voice coil motor according to claim 1, wherein a hook is mounted at the bottom end of the mover (22) and arranged in the chute (13), and the hook is connected with the other end of the chute (13) through a return spring (12).

3. The double-guide-rail voice coil motor according to claim 2, wherein the sliding table (35) is connected with one end of the mover (22), a first sliding groove and a second sliding groove are arranged at the bottom end of the sliding table (35), and the second sliding grooves are arranged on two sides of the first sliding groove.

4. A dual-rail voice coil motor as claimed in claim 3, characterized in that the dual rail (4) comprises a first rail (33), a second rail (34), the second rail (34) being provided on both sides of the first rail (33).

5. The dual-rail voice coil motor of claim 4, wherein the first rail (33) and the slide bar (32) are disposed in the first runner and the second rail (34) is disposed in the second runner.

6. A dual-rail voice coil motor according to claim 1, characterized in that the sliding table (35) is provided with a number of heat dissipation holes (36).

7. A dual-rail voice coil motor according to claim 1, characterized in that the side of the skid base (31) is provided with a caulking groove in which a laser encoder (37) is mounted.