CN203815640U

CN203815640U - Electric toothbrush motor

Info

Publication number: CN203815640U
Application number: CN201420166449.0U
Authority: CN
Inventors: 张立武
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-08
Filing date: 2014-04-08
Publication date: 2014-09-10
Anticipated expiration: 2024-04-08

Abstract

The utility model provides an electric toothbrush motor which comprises inductance coils, silicon steel cores, four permanent magnets, bearings and a balancing weight, wherein the inductance coils are wound in series on a left bracket and a right bracket; the silicon steel cores are arranged on a rotating shaft rod in a sleeving way and rotate along with the rotating shaft rod together, the silicon steel cores are positioned in the inner centers of the left bracket and the right bracket, and the silicon steel cores are encircled by the inductance coils; two permanent magnets form one group, two groups of permanent magnets are respectively arranged on both side edges of the left bracket and the right bracket, and the two groups of permanent magnets are positioned on two side surfaces of the silicon steel cores; one bearing is sleeved on the front end of one silicon steel core by virtue of the rotating shaft rod, the other bearing is sleeved on the tail end of the silicon steel core; the balancing weight is arranged on the tail part of the rotating shaft rod. The electric toothbrush motor provided by the utility model is capable of automatically keeping the balance and automatic reset of the rotating shaft rod by utilizing the characteristics of a permanent magnet magnetic field, and has the advantages of simple structure, low cost and suitability for large-batch popularization.

Description

A kind of electric toothbrush motor

Technical field

This utility model relates to electric toothbrush technology field, particularly a kind of electric toothbrush motor of automatic maintenance balance.

Background technology

For dither motor, keep balance quality and be reset to as important, the electronic design that prior art provides adopts the flexible members such as spring, shell fragment, draw point to keep balance and the reset issues of motor, project organization is comparatively complicated like this, manufacturing cost is too high, and need manual adjustment in producing, concordance is difficult to guarantee, is therefore not suitable for popularization in enormous quantities.

Summary of the invention

This utility model provides a kind of electric toothbrush motor, automatically keep the balance of rotating shaft bar and automatically reset, and simple in structure, cost is low.

To achieve these goals, this utility model provides following technical scheme:

A kind of electric toothbrush motor, comprise: left socle, right support, inductance coil, permanent magnet, silicon steel core, rotating shaft bar, bearing and balance weight, described inductance coil series connection is wrapped on left socle and right support, described silicon steel core is sheathed to be arranged on rotating shaft bar along with rotating shaft bar rotates together, silicon steel core is positioned at described left socle and right support inside center, and described silicon steel core is enclosed in wherein by inductance coil, permanent magnet is four, one group of two permanent magnet, described in two groups, permanent magnet is arranged on respectively left and right support dual-side, and described in two groups, permanent magnet is positioned at the two sides of described silicon steel core, bearing described in one is set in the front end of silicon steel core by rotating shaft bar, bearing holder (housing, cover) described in another is located at the tail end of silicon steel core, described balance weight is arranged on described rotating shaft bar afterbody.

Preferably, described left socle middle part is respectively equipped with groove with right support middle part, and inductance coil series connection is wrapped in the groove at left socle middle part and the groove at right support middle part.

Preferably, the centre of described this balance weight is provided with a locating slot, and described balance weight close-fitting is arranged in the locating rod of rotating shaft bar.

Preferably, described balance weight is semicircle or I shape.

By implementing above technical scheme, there is following technique effect: the electric toothbrush motor that this utility model provides, utilize the characteristic of magnetic field of permanent magnet, automatically keep the balance of rotating shaft bar and automatically reset.And simple in structure, cost is low, is applicable in enormous quantities popularization.

Accompanying drawing explanation

The STRUCTURE DECOMPOSITION schematic diagram of the automatic maintenance balance electric toothbrush motor that Fig. 1 provides for this utility model;

The top view cross-sectional view (static state) of the automatic maintenance balance electric toothbrush motor that Fig. 2 provides for this utility model;

After the inductance coil energising of the automatic maintenance balance electric toothbrush motor that Fig. 3 provides for this utility model, magnetic field structure cuts open schematic diagram;

The inductance coil of the automatic maintenance balance electric toothbrush motor that Fig. 4 provides for this utility model oppositely after energising alternating magnetic field structure cut open schematic diagram;

The silicon steel core shape and structure schematic diagram of the automatic maintenance balance electric toothbrush motor that Fig. 5 provides for this utility model;

The another kind of shape and structure schematic diagram of silicon steel core of the automatic maintenance balance electric toothbrush motor that Fig. 6 provides for this utility model;

The balance weight shape and structure schematic diagram of the automatic maintenance balance electric toothbrush motor that Fig. 7 provides for this utility model;

The another kind of shape and structure schematic diagram of balance weight of the automatic maintenance balance electric toothbrush motor that Fig. 8 provides for this utility model;

Another shape and structure schematic diagram of balance weight of the automatic maintenance balance electric toothbrush motor that Fig. 9 provides for this utility model;

The installation diagram of the automatic maintenance balance electric toothbrush motor that Figure 10 provides for this utility model.

The specific embodiment

In order better to understand the technical solution of the utility model, below in conjunction with accompanying drawing, describe the embodiment that this utility model provides in detail.

This utility model provides a kind of electric toothbrush motor of automatic maintenance balance, see shown in diagram 1 and Figure 10, its part: left socle 200, right support 100, inductance coil 700, permanent magnet 300, silicon steel core 600, rotating shaft bar 800, bearing 500, balance weight 900, hide magnetic sheet 400, described left socle 200 is basic identical with right support 100 structural designs, this outer middle part of left socle 200, the outer middle part of right support 100 is respectively provided with a border groove, inductance coil 700 series connection are respectively in this groove, this left socle 200 is ducted body with right support 100 bosoms, silicon steel core 600 is arranged on wherein.

Left socle 200 and right support 100 mating surface places, left socle 200 is established a locating dowel 203, establishes right support one locating hole 103, and this locating dowel 203 plays location and guide effect with locating hole 103.In like manner, can be contrary, locating hole is set on left socle, locating dowel is set on right support.

Inductance coil 700 is connected respectively in this left socle and right support groove, the inductance coil head end of left socle exposes a power interface 702, the inductance coil tail end of right support exposes a power interface 701, this two power interface is wrapped in respectively on the pillar 204 of left socle and the pillar 104 of right support, and can be welded to panel.

As shown in Figure 1,2,3, 4, described permanent magnet 300 is a rectangular strip, the two ends, magnetic stripe edge of this permanent magnet are respectively provided with positioning port 301, four permanent magnets 300 are divided into two groups, two permanent magnets are in one group of metal trough 202 that is arranged on left socle magnetic, another two permanent magnets are in one group of metal trough that is arranged on right support magnetic, and the outer face of permanent magnet 300 and left socle and right support top end face 205 are installed respectively one and hidden magnetic sheet 400 and prevent magnetic leakage.

As shown in Figure 1,5, silicon steel core 600 is made for several electrical steel light sheet material combinations, and silicon steel core 600 is shaped as I word shape, and this shape is that actual measurement show that data are and ad hoc through this example, and this silicon steel core 600 is sheathed to be fixed on rotating shaft bar 800.

In another embodiment, as shown in Figure 6, silicon steel core 601 is made for several electrical steel light sheet materials combine, silicon steel core 601 is shaped as different form, this shape is also that actual measurement draws data and ad hoc through this example, and this silicon steel core 601 is identical with the effect that I word shape silicon steel core 600 shown in diagram 5 reaches.

As shown in Figure 1, rotating shaft bar 800 is that a kind of stainless steel is made, these rotating shaft bar 800 exposed parts front ends are for electric toothbrush head is installed, tail end is that balance weight 900 is installed, bearing 500 described in one is set in silicon steel core 600 front ends through rotating shaft bar 800, bearing 500 described in another is set in silicon steel core 600 tail ends, and right support 100 is provided with a bearing groove 101, and left socle 200 closes rear bearing 500 with right support 100 and will be fixed in bearing groove 101.

As shown in Fig. 1,7, balance weight 900 is that a kind of iron plate is made, and in the middle of this balance weight 900, is provided with a locating slot 901, and balance weight 900 close-fittings are arranged on rotating shaft bar 800 locating rods interior 801.

In other embodiments, as shown in Figure 8,9, balance weight can make 903 by semicircle 902 or I shape, and its effect reaching is identical with diagram 7 balance weights 900.

As shown in Figure 2, under this static state, due to inductance coil 700, also generation current is not therefore silicon steel core 600 has electromagnetic field, and the magnetic field suction that silicon steel core 600 will be produced by permanent magnet 300 is in this case lived, and makes silicon steel core 600 hold resets, resets to start position.

As shown in Figure 3, under this is dynamic, due to inductance coil 700 generation currents, silicon steel core 600 two ends produce respectively stronger different magnetic poles, make full use of Magnet same-sex attraction opposite sex repulsion principle features, make silicon steel core produce rotation.

As shown in Figure 4, under this is dynamic, due to inductance coil 700 senses of current exchanges, make silicon steel core 600 two ends magnetic polarities produce exchange, silicon steel core 600 magnetic fields, according to same-sex attraction opposite sex repulsion principle features, produce silicon steel core 600 and counter-rotate.

A kind of electric toothbrush motor above this utility model embodiment being provided is described in detail, for one of ordinary skill in the art, thought according to this utility model embodiment, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. an electric toothbrush motor, it is characterized in that, comprise: left socle, right support, inductance coil, permanent magnet, silicon steel core, rotating shaft bar, bearing and balance weight, described inductance coil series connection is wrapped on left socle and right support, described silicon steel core is sheathed to be arranged on rotating shaft bar along with rotating shaft bar rotates together, silicon steel core is positioned at described left socle and right support inside center, and described silicon steel core is enclosed in wherein by inductance coil, permanent magnet is four, one group of two permanent magnet, described in two groups, permanent magnet is arranged on respectively left and right support dual-side, and described in two groups, permanent magnet is positioned at the two sides of described silicon steel core, bearing described in one is set in the front end of silicon steel core by rotating shaft bar, bearing holder (housing, cover) described in another is located at the tail end of silicon steel core, described balance weight is arranged on described rotating shaft bar afterbody.

2. electric toothbrush motor as claimed in claim 1, is characterized in that, described left socle middle part is respectively equipped with groove with right support middle part, and inductance coil series connection is wrapped in the groove at left socle middle part and the groove at right support middle part.

3. electric toothbrush motor as claimed in claim 1, is characterized in that, the centre of described this balance weight is provided with a locating slot, and described balance weight close-fitting is arranged in the locating rod of rotating shaft bar.

4. electric toothbrush motor as claimed in claim 3, is characterized in that, described balance weight is semicircle or I shape.