CN220359005U - Double-coil driving motor - Google Patents

Abstract

The utility model discloses a double-coil driving motor, comprising: the shell is internally provided with a first magnetic conduction arm and a second magnetic conduction arm fixedly; a first coil is fixedly arranged on the first magnetic conduction arm; a second coil is fixedly arranged on the second magnetic conduction arm; one end of the first magnetic conduction arm is fixedly connected with one end of the second magnetic conduction arm; in summary, the present utility model is provided by: two mutually parallel magnetic conduction arms are arranged, and a driving coil is respectively arranged on the two magnetic conduction arms, so that magnetic forces generated by the two coils can be mutually overlapped when alternating current is introduced, the driving force generated by the vibration motor is stronger, and the vibration effect of the vibration motor is improved.

Description

Double-coil driving motor

Technical Field

The utility model relates to the technical field of vibration motors, in particular to a double-coil driving motor.

Background

In the prior art, the electric toothbrush is a very common tool in life of people, and compared with a common toothbrush, the electric toothbrush can clean teeth of people at a higher frequency so as to improve stains in tooth gaps or on tooth surfaces of people. And the vibration motor drives the electric toothbrush to vibrate, and is the vibration motor inside the electric toothbrush.

The Chinese patent (application No. 202110838993. X) proposes a high-performance slender sound wave toothbrush motor, which comprises a shell, a stator iron core, a coil winding, a motor shaft and a permanent magnet component, wherein the stator iron core comprises an iron core magnetizer matched with the coil winding and an iron core main body matched with the permanent magnet component; the iron core magnetizer comprises a winding part and a magnetic conduction arm part extending from the winding part, a coil winding is wound on the winding part, the coil winding and the winding part are distributed at the end part of the motor shaft along the axial direction of the motor shaft, the permanent magnet part, the iron core main body and the magnetic conduction arm part are all linearly extended along the axial direction of the motor shaft, and the permanent magnet part, the iron core main body and the magnetic conduction arm part are sequentially distributed inside and outside the radial direction of the motor shaft, so that the section size of the acoustic toothbrush motor can be reduced, the acoustic toothbrush motor is easy to be made into an elongated shape, and further the acoustic toothbrush motor is better suitable for an electric toothbrush which has a wide internal space in the length direction and is more tension in the width direction, and the applicability is greatly improved.

However, the following disadvantages still exist with this drive motor: the motor adopts a single coil, the actual driving capability is weak, and the electric toothbrush is difficult to drive to generate strong vibration. And the magnetic conduction arm of the motor is manufactured in a steel sheet stacking mode, so that the requirement of the size assembly precision of the small-size motor is difficult to meet.

Disclosure of Invention

The utility model aims to disclose a double-coil driving motor, which solves the problem that the magnetic driving capability is weak due to the fact that only a single coil is arranged in the existing vibration motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a dual coil drive motor comprising: the shell is internally provided with a first magnetic conduction arm and a second magnetic conduction arm fixedly; a first coil is fixedly arranged on the first magnetic conduction arm; a second coil is fixedly arranged on the second magnetic conduction arm; one end of the first magnetic conduction arm is fixedly connected with one end of the second magnetic conduction arm.

Optionally, the first coil includes a first bobbin and a first wire; the first winding framework is sleeved on the first magnetic conduction arm, and the first lead is wound on the first winding framework.

Optionally, the second coil includes a second bobbin and a second wire; the second winding framework is sleeved on the second magnetic conduction arm, and the second lead is wound on the second winding framework.

Optionally, a motor shaft is also rotatably arranged inside the housing.

Optionally, a permanent magnet is fixedly arranged on the motor shaft.

Optionally, the magnetic conductive device further comprises a third magnetic conductive arm; one end of the third magnetic conduction arm is fixedly connected with one end of the first magnetic conduction arm; the other end of the third magnetic conduction arm is fixedly connected with one end of the second magnetic conduction arm.

Optionally, the first magnetic conduction arm and the second magnetic conduction arm are parallel to the motor shaft; the third magnetic conduction arm is perpendicular to the motor shaft.

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

the present utility model provides a dual coil drive motor, comprising: the shell is internally provided with a first magnetic conduction arm and a second magnetic conduction arm fixedly; a first coil is fixedly arranged on the first magnetic conduction arm; a second coil is fixedly arranged on the second magnetic conduction arm; one end of the first magnetic conduction arm is fixedly connected with one end of the second magnetic conduction arm; in summary, the present utility model is provided by: two mutually parallel magnetic conduction arms are arranged, and a driving coil is respectively arranged on the two magnetic conduction arms, so that magnetic forces generated by the two coils can be mutually overlapped when alternating current is introduced, the driving force generated by the vibration motor is stronger, and the vibration effect of the vibration motor is improved.

Drawings

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

FIG. 1 is a perspective view of a dual coil drive motor according to the present utility model;

FIG. 2 is an exploded schematic view of the internal structure of FIG. 1;

FIG. 3 is a schematic view of the internal structure of FIG. 1;

in the figure, 1, a shell; 2. a first magnetic arm; 3. the second magnetic conduction arm; 4. a first coil; 41. a first bobbin; 42. a first wire; 5. a second coil; 51. a second bobbin; 52. a second wire; 6. a motor shaft; 7. a permanent magnet; 8. and a third magnetic conduction arm.

Detailed Description

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1

A dual coil drive motor as shown in fig. 1-3, comprising: the magnetic circuit comprises a shell 1, wherein a first magnetic conduction arm 2 and a second magnetic conduction arm 3 are fixedly arranged in the shell 1; a first coil 4 is fixedly arranged on the first magnetic conduction arm 2; a second coil 5 is fixedly arranged on the second magnetic conduction arm 3; one end of the first magnetic conduction arm 2 is fixedly connected with one end of the second magnetic conduction arm 3.

Specifically, in this application, first magnetic conduction arm 2 and second magnetic conduction arm 3 mutual parallel arrangement, in order to increase driving force of driving motor, improve driving force of motor, this application sets up a coil respectively on first magnetic conduction arm 2 and second magnetic conduction arm 3, namely first coil 4 and second coil 5, the other end fixed connection of first magnetic conduction arm 2 and second magnetic conduction arm 3 makes the magnetic driving force that first coil 4 and second coil 5 produced can overlap each other, and then the drive capability of reinforcing motor. In this application, in order to improve the magnetic conduction ability of magnetic conduction arm, the structure of magnetic conduction arm among the prior art is revised for metal powder integrated into one piece's processing mode by the form that original steel sheet was piled up to this kind of processing mode obtains magnetic conduction arm, and its magnetic conduction ability is stronger, and compares the mode that the steel sheet was piled up, and the machining precision of magnetic conduction arm is higher, can satisfy the high accuracy size requirement of specific position better.

Further, the first coil 4 includes a first bobbin 41 and a first wire 42; the first winding frame 41 is sleeved on the first magnetic conduction arm 2, and the first lead wire 42 is wound on the first winding frame 41.

Further, the second coil 5 includes a second bobbin 51 and a second wire 52; the second winding framework 51 is sleeved on the second magnetic conduction arm 3, and the second lead 52 is wound on the second winding framework 51.

In this application, the wire is not directly around establishing on magnetic conduction arm, but is at first around establishing on the wire winding skeleton, then establishes wire winding skeleton cover on magnetic conduction arm again, can improve wire winding efficiency, avoids magnetic conduction arm to influence wire winding efficiency.

Optionally, a motor shaft 6 is also rotatably arranged inside the housing 1.

Optionally, a permanent magnet 7 is fixedly arranged on the motor shaft 6.

In this application, in order to improve the drive force of motor, the fixed two pairs of permanent magnets 7 that are provided with on the motor shaft 6, the direction of placing of every pair of permanent magnet 7 is all opposite, and permanent magnet 7 all is parallel to each other with motor shaft 6, two pairs of permanent magnets 7 align each other with first magnetic conduction arm 2 and second magnetic conduction arm 3 respectively, all set up flutedly on first magnetic conduction arm 2 and the second magnetic conduction arm 3, can improve the magnetic drive ability between magnetic conduction arm and the permanent magnet 7.

Further, the magnetic conductive device also comprises a third magnetic conductive arm 8; one end of the third magnetic conduction arm 8 is fixedly connected with one end of the first magnetic conduction arm 2; the other end of the third magnetic conduction arm 8 is fixedly connected with one end of the second magnetic conduction arm 3.

Further, the first magnetic conduction arm 2 and the second magnetic conduction arm 3 are parallel to the motor shaft 6; the third magnetic conduction arm 8 is perpendicular to the motor shaft 6.

In this application, third magnetic conduction arm 8 is used for being connected first magnetic conduction arm 2 and second magnetic conduction arm 3 each other, including mutual fixed connection, also including realizing the connection of inside magnetic flux, through third magnetic conduction arm 8, can overlap the magnetic flux that first coil 4 and second coil 5 produced each other to improve the driving force of motor.

To sum up, the application provides a vibrating motor with two drive coils, through set up the coil on first magnetic conduction arm 2 and second magnetic conduction arm 3 respectively, can overlap the magnetic flux that two coils produced each other, make the coil can produce bigger driving capability, and then improve the vibrations effect of motor. The magnetic conduction arm is changed from steel sheets to metallurgical powder, so that the processing precision of a product can be improved, and the processing cost is reduced.

The present utility model is not limited to the above-described embodiments, but, if various modifications or variations of the present utility model are not departing from the spirit and scope of the present utility model, the present utility model is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.

Claims (7)

1. A dual coil drive motor, comprising: the shell is internally provided with a first magnetic conduction arm and a second magnetic conduction arm fixedly;

a first coil is fixedly arranged on the first magnetic conduction arm; a second coil is fixedly arranged on the second magnetic conduction arm;

one end of the first magnetic conduction arm is fixedly connected with one end of the second magnetic conduction arm.

2. The dual coil drive motor as set forth in claim 1, wherein said first coil includes a first bobbin and a first wire; the first winding framework is sleeved on the first magnetic conduction arm, and the first lead is wound on the first winding framework.

3. The dual coil drive motor as set forth in claim 1, wherein said second coil includes a second bobbin and a second wire; the second winding framework is sleeved on the second magnetic conduction arm, and the second lead is wound on the second winding framework.

4. A dual coil drive motor as set forth in claim 1 wherein said housing interior is further rotatably provided with a motor shaft.

5. The dual coil drive motor as set forth in claim 4, wherein said motor shaft is fixedly provided with a permanent magnet.

6. The dual coil drive motor as set forth in claim 1 further comprising a third magnetically permeable arm;

one end of the third magnetic conduction arm is fixedly connected with one end of the first magnetic conduction arm;

the other end of the third magnetic conduction arm is fixedly connected with one end of the second magnetic conduction arm.

7. The dual coil drive motor as set forth in claim 6 wherein said first and second magnetically permeable arms are each parallel to the motor shaft; the third magnetic conduction arm is perpendicular to the motor shaft.