CN2610867Y

CN2610867Y - Bristle structure of electric toothbrush

Info

Publication number: CN2610867Y
Application number: CN 03239808
Authority: CN
Inventors: 江正杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-28
Filing date: 2003-02-28
Publication date: 2004-04-14
Anticipated expiration: 2013-02-28

Abstract

A tooth brush head structure for electric tooth brushes, comprises a brush head sleeve, a brush group, a transmission shaft housing and an adaptor means, wherein the back end of the transmission shaft sleeve is provided with a front-extending shaft hole, which is sleeved on the outer edge of a drive shaft on the transmission end of the tooth brush handle. A hollowed-out section is arranged on the transmission shaft housing at the position corresponding to the transmission cross-section on the outer edge of the drive shaft. The hollowed-out section is also provided with a bridge body, the front end and back end of which are connected with the main body of the transmission shaft housing, and the inner side is arranged on the side edge of the shaft hole, so that the radial width of the shaft hole at this position if smaller than the external diameter of the drive shaft at the transmission cross-section. When the drive shaft is sleeved by the shaft hole, the inner side of the bridge body is elastically expended due to the press and support of the transmission cross-section, and a reaction force is generated, pressing the transmission cross-section tightly, so that the drive shaft and the transmission shaft housing are positioned along both the axial and radical directions simultaneously, and the transmission shaft housing achieves to deflect to the left and right in a round trip, driven by the drive shaft. With a structural improvement, the utility model can be directly sleeved on the transmission ends of tooth brush handles of different types of tooth brushes.

Description

The head toothbrushes structure of electric toothbrush

Technical field

This utility model relates to a kind of head toothbrushes structure of electric toothbrush, is specially adapted to the electric toothbrush of replaceable brush head, makes head toothbrushes by structural improvement, and is socketed on the handle transmission end of the electric toothbrush of different type of machines.

Background technology

Electric toothbrush is a kind of by electric power motor and drive to the bristle pack of toothbrush, vibrates the instrument of the tartar on the cleaning teeth to make the displacement of bristle pack repetitiousness.Because the electric toothbrush brush group is stable by motor transmission, motor rotary speed and bristle pack frequency of vibration, so can thoroughly clean the tartar in the slot, brush teeth with hand-held toothbrush compared to tradition, have more save time, the labour-saving advantage, therefore in recent years, there has been increasing people to use electric toothbrush.

Commercially available electric toothbrush includes a handle and a plural number head toothbrushes usually, making same handle can change different head toothbrushes uses, one comes consumer need only buy the expensive handle of a cost cooperates a plural number head toothbrushes to use for the whole family, moreover the bristle pack of head toothbrushes is because of long-time when using flexural deformation, need only purchase new head toothbrushes and change use, need not change the electric toothbrush of whole group, so can meet economic benefit.

Referring to Fig. 1, the electric toothbrush of habit formula mainly is made up of a handle 10 and a head toothbrushes 20, wherein: handle 10 is available for users to grip, in have the supply electric power accumulator and motor (not shown), its front end is transmission end 11, and transmission end 11 is extended with a driving shaft 12 forward, after user presses the button, can make motor action and make driving shaft 12 carry out 360 ° of rotations or about back and forth deflection.

Head toothbrushes 20 is provided with a hairbrush group 22 in a brush sleeve pipe 21 front ends, and the rear end is provided with a convergence part 23, when convergence part 23 is socketed on the transmission end 11 of handle 10, and hairbrush group about the 22 reciprocal deflections that driving shaft 12 can drive brush headgear pipe 21 front ends.

In this mandatory declaration be, the mode of commercially available electric toothbrush transmission is divided into two kinds, first kind is 360 ° of rotations for the motors in the handle 10 directly drive driving shaft 12, when being transferred to head toothbrushes 20, back and forth deflection about by the mechanism in the brush sleeve pipe 21 360 ° spinning movement being converted to, and then back and forth deflection about making hairbrush group 22 be.The mode of second kind of transmission is that handle 10 inside have some mechanical transmission structures, the driving shaft 12 of its front end is about back and forth deflection, the mechanism that complexity then just needn't be set in the brush sleeve pipe 21 of head toothbrushes 20 is to change the kind of drive.

Above-mentioned two kinds of known techniques respectively have its pluses and minuses, but this utility model is only improved at the head toothbrushes 20 of second kind of known electric toothbrush.The internal structure of the head toothbrushes 20 of this known electric toothbrush is as shown in Figure 2: 23 of the hairbrush group 22 of brush sleeve pipe 21 front ends and the convergence parts of rear end, be provided with a driving sleeve 30, when convergence part 23 is socketed on the transmission end 11 of handle 10, but driving shaft 12 proper intercalations are gone in the driving sleeve 30, and with its axially and radially engage the location, then during the reciprocal deflection of driving shaft about 12, but back and forth deflection about transmission drive shaft cover 30 also is, by this to drive hairbrush group 22.

Referring to Fig. 1,2, engage radially that locate can transmission owing to must axially reach between described driving shaft 12 and the driving sleeve 30, so this driving shaft 12 is provided with a transmission cross section 13 and a snap openings 14 at least; And driving sleeve 30 engages for driving shaft 12 intercalations, so its axis hole cooperates transmission cross section 13 shapes of driving shaft 12 and block 31 is set, by block 31 and transmission cross section 13 mutually against and radial location, when the reciprocal deflection of driving shaft about 12, can drive driving sleeve 30 simultaneously about back and forth deflection.In addition, driving sleeve 30 is in snap openings 14 positions with respect to driving shaft 12, be provided with an elasticity button hook 32, when driving sleeve 30 is gone in driving shaft 12 intercalations to the location, elasticity button hook 32 promptly is fastened on snap openings 14, make driving shaft 12 and driving sleeve 30 axial location, and then endwisely slip when preventing about driving sleeve 30 is being subjected to driving shaft 12 transmissions back and forth deflection.

Between above-mentioned known driving shaft 12 and the driving sleeve 30 axially and radially engage localized structure, can different positions and design be arranged because of the difference of manufacturer, for example national patent case number No. 80212472 (No. the 211114th, notification number) and the U.S. Kressner of the application of hundred ages Japan KK company, No. 5289604 patent under the Braun Aktiengesellschaft, be and Fig. 1, the design that conventional construction shown in Figure 2 is identical, and as Fig. 3, the known driving shaft 12 that Fig. 4 disclosed, the position of its transmission cross section 13 and snap openings 14, again with Fig. 1, structure difference shown in Figure 2, also must can transmission (this is a known techniques, does not give unnecessary details in addition at this) in the relative driving sleeve 30 with different designs; This utility model promptly is for improveing this kind two kinds of relative structures to be set, can be simultaneously axially and the known techniques of radial location, and also known techniques can have different positions and design because of the difference of manufacturer, all can be improved by this utility model.

The head toothbrushes structure of the electric toothbrush that this utility model is desired to provide promptly is that the structure at known replaceable head toothbrushes is improved, in the hope of using by the handle that cooperates various different labels with a kind of structure.

Summary of the invention

Main purpose of the present utility model provides a kind of head toothbrushes structure of electric toothbrush, and it makes head toothbrushes by structural improvement, and is socketed on the handle transmission end of the electric toothbrush of different type of machines.

The technical solution of the utility model is as follows: particularly, a kind of head toothbrushes structure of electric toothbrush, comprise: a brush sleeve pipe, one hairbrush group, one driving sleeve, an and convergence part, wherein the driving sleeve rear end has an axis hole that extends forward, this axis hole can be enclosed within the outer rim of the driving shaft of handle transmission end, it is characterized in that: driving sleeve is provided with a hollow out section at the transmission section with respect to the driving shaft outer rim, the hollow out section is provided with a pontic, this pontic front and back end is connected in the driving sleeve body, the inboard is positioned at the lateral location of axis hole, make axis hole radial width herein be positioned at the external diameter of transmission section less than driving shaft, so after driving shaft is inserted in axis hole, the pontic inboard can be subjected to the contact in transmission cross section and be elasticity to open outward, be closely against the transmission cross section to produce counteracting force by this, thereby can make axially and radially location simultaneously of driving shaft and driving sleeve, make driving sleeve be subjected to the driving shaft transmission and about back and forth deflection.

Preferably, the material of described driving sleeve and pontic should be integrally formed with plastic-steel.

Preferably, described convergence part inner edge is provided with limited slip block.

According to the said structure feature, this utility model is structurally improved head toothbrushes, by being tight against mutually and being able to simultaneously axially and radial location between the pontic of driving sleeve and the driving shaft, can exempt known driving sleeve must be provided with corresponding structure at the transmission cross section and the snap openings of driving shaft, and head toothbrushes of the present utility model can be socketed on the handle transmission end of different type of machines electric toothbrush.

Should be integrally formed because of the material of driving sleeve of the present utility model and pontic with plastic-steel, can increase its intensity and service life.

Because of convergence part of the present utility model inner edge is provided with limited slip block, this limited slip block can increase the frictional force between convergence part and the transmission end, to utilize the axial location of frictional force between reinforcement transmission cross section and the pontic inboard, makes hairbrush difficult drop-off on first watch by this.

Description of drawings

Fig. 1 is the handle of known electric toothbrush and the three-dimensional exploded view of head toothbrushes.

Fig. 2 is the handle of known electric toothbrush and the combination sketch map of head toothbrushes.

Fig. 3, the 4th, the axonometric chart of two kinds of known electric toothbrush driving shafts in addition.

Fig. 5 is the three-dimensional exploded view of this utility model head toothbrushes, wherein the driving sleeve broken section.

Fig. 6 is the sketch map before this utility model head toothbrushes and the handle combination.

Fig. 7 is the sketch map after this utility model head toothbrushes and the handle combination.

Fig. 8 is the enforcement illustration of the convergence part of this utility model head toothbrushes.

The figure number explanation

Handle 10 transmission ends 11 driving shafts 12

Transmission cross section 13 snap openings, 14 head toothbrushes 20

Brush sleeve pipe 21 hairbrush groups 22 convergence parts 23

Driving

cog

24,25 limited slip blocks 26 driving sleeves 30

Block 31 elasticity button hooks 32 axis holes 33

Hollow out section 34 pontics 35

The specific embodiment

Referring to Fig. 5-7, the head toothbrushes structure of electric toothbrush of the present utility model, comprise: a brush sleeve pipe 21, a hairbrush group 22, a convergence part 23 and a driving sleeve 30, wherein: brush sleeve pipe 21 generally is hollow tubular, front end is provided with hairbrush group 22, the rear end is provided with

convergence part

23,30 of driving sleeves are located at the position between hairbrush group 22 and convergence part 23 in the brush sleeve pipe 21, and driving sleeve 30 is respectively equipped with driving

cog

24,25 with hairbrush group 22 relative positions and is meshed, when driving sleeve 30 left and right sides deflections, can drive 22 deflections simultaneously of hairbrush group.

When head toothbrushes 20 engages with handle 10, convergence part 23 is socketed on the transmission end 11 of handle 10, but the axis hole 33 in the driving sleeve 30 is gone in driving shaft 12 proper intercalations, then during the reciprocal deflection of driving shaft about 12, back and forth deflection about can making driving sleeve 30 also be, and

mat driving cog

24,25 are meshed and drive hairbrush group 22, it is characterized in that, driving sleeve 30 is provided with a hollow out section 34 at 13 places, transmission cross section with respect to driving shaft 12 outer rims, hollow out section 34 is provided with a pontic 35, these pontic 35 front and back ends are connected in driving sleeve 30 bodies, the inboard is positioned at the lateral location of axis hole 33, makes axis hole 33 radial width herein be positioned at the external diameter at 13 places, transmission cross section less than driving shaft 12.

After driving shaft 12 is inserted in axis hole 33,, make axis hole 33 radial width herein less than driving shaft 12, so make pontic 35 inboards be subjected to the contact in transmission cross section 13 because pontic 35 inboards are positioned at the lateral location of axis hole 33; At this moment, because pontic 35 front and back ends are connected in driving sleeve 30 bodies, and be positioned on the hollow out section 34 and have the space of displacement, so when being activated axle 12 transmission cross section 13 contacts, pontic 35 can be forced to distortion and be elasticity and open outward, produces counteracting force by this and makes its inboard be closely against transmission cross section 13.

When pontic 35 generation counteracting forces are closely against transmission cross section 13, between driving shaft 12 and the pontic 35 mat pontic 35 inboard with transmission cross section 13 mutually against and form radial location, then during driving shaft 12 deflections, can drive driving sleeve 30 body deflections simultaneously through pontic 35; Simultaneously, because pontic 35 produces counteracting force and makes being tight against of its inboard and transmission cross section 13, can between transmission cross section 13 and pontic 35 inboards, produce frictional force, make pontic 35 clamp driving shaft 12, and then make driving sleeve 30 and driving shaft 12 form axial location, with avoid driving shaft 12 about back and forth during deflection driving sleeve 30 and brush head 20 come off; Certainly, when the strength of drawing is greater than the frictional force between transmission cross section 13 and pontic 35 inner phase forward if user is bestowed brush head 20, brush head 20 can be disassembled on handle 10, with replacing brush head 20.

By above-mentioned structure, the head toothbrushes structure of electric toothbrush of the present utility model is by being tight against mutually and being able to simultaneously axially and radial location between the pontic 35 of driving sleeve 30 and the driving shaft 12, can exempt known driving sleeve and must corresponding structure be set at the transmission cross section and the snap openings of driving shaft, as shown in Figure 2, so can be socketed on the electric toothbrush of different type of machines, to reach aforesaid purpose.

Moreover because driving shaft 12 is when transmission makes the reciprocal deflection of driving sleeve about 30, pontic 35 is stressed place, so this utility model is when enforcement, and the material of driving sleeve 30 and pontic 35 should be integrally formed with plastic-steel, by this to increase its intensity and service life; Creator of the present utility model successfully makes sample and long time test at this point, if your juror still has a question the indication sampling of please writing to us without sparing to this.

In addition, referring to Fig. 8, this utility model is when implementing, these convergence part 23 inner edges can be added limited slip block 26, limited slip block 26 should be to be provided with block rubber or directly to be coated with rubberbase paint and to make, and when convergence part 23 was socketed on the transmission end 11 of handle 10, this limited slip block 26 can increase the frictional force between convergence part 23 and the transmission end 11, to utilize the axial location of frictional force between reinforcement aforementioned transmission cross section and the pontic inboard, make more difficult drop-off of brush head 20 by this.

Graphic and element title of the present utility model is to describe architectural feature of the present utility model and establish for convenient, is not in order to limit patent right scope of the present utility model; All foundations creation spirit of the present utility model and the replacement of equivalence element slightly must be within this patent protection domains.

Claims

1. the head toothbrushes structure of an electric toothbrush, comprise: a brush sleeve pipe, one hairbrush group, one convergence part and a driving sleeve, wherein: brush sleeve pipe front end is provided with the hairbrush group, the rear end is provided with the convergence part, it is interior between hairbrush group and convergence part that driving sleeve is located at the brush sleeve pipe, under head toothbrushes and the handle engagement state, the convergence part is socketed on the transmission end of handle, the axis hole in the driving sleeve is gone in the driving shaft intercalation, move simultaneously by reciprocal deflection transmission drive shaft cover and hairbrush group about driving shaft, it is characterized in that: driving sleeve is provided with a hollow out section at the transmission section with respect to the driving shaft outer rim, the hollow out section is provided with a pontic, this pontic front and back end is connected in the driving sleeve body, the inboard is positioned at the lateral location of axis hole, axis hole radial width herein is positioned at the external diameter of transmission section less than driving shaft, after driving shaft is inserted in axis hole, the pontic inboard is subjected to the contact in transmission cross section and is elasticity opening outward, produce counteracting force by this and make its inboard be closely against the transmission cross section, reach driving shaft and driving sleeve and axially and radially locate simultaneously.

2. the head toothbrushes structure of electric toothbrush according to claim 1, it is characterized in that: described driving sleeve and pontic are integrally formed with plastic-steel.

3. the head toothbrushes structure of electric toothbrush according to claim 1 and 2, it is characterized in that: described convergence part inner edge is provided with limited slip block.