CN2558353Y

CN2558353Y - Electric toothbrush

Info

Publication number: CN2558353Y
Application number: CN01230055U
Authority: CN
Inventors: P·埃克
Original assignee: NORDIKA INTERNATIONAL AB
Current assignee: NORDIKA INTERNATIONAL AB
Priority date: 2001-09-03
Filing date: 2001-10-31
Publication date: 2003-07-02
Anticipated expiration: 2011-10-31
Also published as: WO2003020159A1

Abstract

The utility model relates to an electric motor toothbrush which is provided with a long thin handle 11 and a crank driving shaft 12, a pair of pressurized lugs (18,19) are arranged at the periphery of a brush head 16, the lugs are jointed by the shaft so that the brush head 11 sways when the shaft 12 is rotated. The brush head 16 is provided with a rigid mechanical lever for swaying the brush head 17 in order.

Description

Electric toothbrush

Technical field

This utility model relates to electric toothbrush.

Background technology

Electric toothbrush is known and uses widely that it has one and overlaps the bristle that is installed in by the toothbrush head of the electrical motor driven in the toothbrush handgrip.Motor can be by the also battery in handgrip, or uses the power supply socket of point to drive by contiguous one.Toothbrush head by revolution and/or vibrations to improve the operation of toothbrush cleaning teeth.In order to make toothbrush head vibrations, known provide comprise gear various mechanical connecting devices rotatablely moving of motor changed into the oscillating motion of toothbrush head.This kind mechanical connecting device trends towards complexity, may be unreliable, and perhaps expensive.

Summary of the invention

A purpose of the present utility model is to overcome or reduce this class problem at least.

According to this utility model, a kind of electric toothbrush is provided, it has the elongate shaft portion that a handgrip and has longitudinal axis, one electro-motor, one is rotatable and the elongated driving shaft of the pusher of biasing arranged laterally at its far-end around this longitudinal axis, one is installed on shank with the toothbrush head around the axis rotation that extends laterally, the vertically opposed lug of a pair of opposite side at longitudinal axis, its periphery that is installed on toothbrush head makes that in order to the mechanical engagement at the intermittence by pusher toothbrush head is swung rotatably when driving shaft is rotated by motor.

Lug preferably has when driving shaft rotates pusher off and on successively by thereon arc shaped support surface.

Preferably make the curved surfaces molding in such a way, promptly toothbrush head quickens from static substantially equably rotatably when each pushers lug.

Two rotatable toothbrush heads can be supported by shank, and wherein second toothbrush head is sent to this second toothbrush head by the linkage component swing of extending with the swing with above-mentioned toothbrush head between above-mentioned toothbrush head.

Second toothbrush head can be mounted to, and around a substantially vertical axis rotation, makes the rotation axis of its above-mentioned relatively toothbrush head constitute certain angle.

Each toothbrush head can have an agglomerate base portion and and be fitted in the interior removable agglomerate of agglomerate base portion releasedly.

Description of drawings

Referring now to accompanying drawing, by example toothbrush of the present utility model is described, wherein:

Fig. 1 is the top view of the section of toothbrush;

Fig. 2 is the axis side view of an end of the shank of toothbrush;

Fig. 3 is the floor map of the rotatable driving device of toothbrush;

Fig. 4 is the side view of rotatable drive arrangements;

Fig. 5 is the exploded view of the toothbrush head of toothbrush; And

Fig. 5 a is the sketch map of the preferred embodiment of lug.

The specific embodiment

With reference to accompanying drawing, the toothbrush among Fig. 1 has the elongate shaft portion 11 that a handgrip 10 and has a central longitudinal axis A.Supporting driving shaft 12 is to rotate and to be connected to a rotor of the electro-motor 13 that is installed in the handgrip around longitudinal axis A.This driving shaft has the crank 14 that forms a biasing pusher at far-end.Battery 15 is received within the handgrip 10 in order to motor 13 supplying power.

Fig. 1 and 2 illustrates two rows and vertically is installed in the

brush head

16 and 17 of an end that is adjacent to shank 11 rotatably.It should be noted that, make brush head rotation axis mutually at an angle, can make brush action move the person's of being used common tooth configuration easily.Brush head 16 has vertically opposed and be installed on the

lug

18 and 19 in order to be engaged by pusher 14 of the periphery surface of brush head when driving shaft rotates.This makes brush head 16 swing rotatably when motor 13 rotating driveshafts 12.Brush head 16 also is provided with the connecting rod 20 that connects rigidly of the fluting 21 of the periphery surface that extends to and enter brush head 17.

Be clear that mechanical connection between driving shaft 12 and the brush head from Fig. 3 and 4.When driving shaft 12 rotation, crank end or pusher 14 intermittently in turn along relative direction with

lug

18 and 19 shifted laterallys so that brush head 16 swing back and forth.When brush head 16 swing, connecting rod 20 moves around around an arc and the joint by groove 21 makes brush head 17 swings.Brush head is preferably integrally formed by the

short column axle

21 and 22 that has stayed surface and be clasped into the respective aperture that is fit to that is formed at shank 11.

As shown in Figure 5, notice,

lug

18 and 19 vertically be that arcual surface is opposed.Preferably curved surfaces is crooked, makes successively suitable lug to be moved laterally to a respective side when pusher 14 engages with each curved surfaces, usually from static even acceleration.This just reduced hot-tempered sound and make pusher 14 and

lug

19,19 between motion transmit more effective.

In a preferred embodiment, shown in Fig. 5 a, the inner surface 30 of arc lug has a pusher entrance side 31 and a pusher outlet side 32, and pusher is arranged to the inner surface pushing to the curved surfaces lug.When lug was located at the position of the longitudinal axis that extends at the space middle part between the lug, the entrance side that makes inner surface outwards extended plane that axis B extends at an angle with respect to the longitudinal axis A that passes elongate shaft portion and side.Outlet side is parallel to above-mentioned plane.This has reduced hot-tempered sound and the further motion that improves between pusher 14 and the

lug

18,19 transmits.

Be also noted that lug 18 is lower than lug 19 on vertical, to guarantee that for turning clockwise of pusher 14, pusher can not block.For the inhour rotation, the position that is lower than lug 18 is suitably fixed or be integrally formed in to lug 19.Under any circumstance, the impurity that fully vertically separately makes of the extension between

lug

18 and 19 can not deposit, or can its cleaning toothbrush easily, so that remove around pusher 14 sedimentary and prevent that pusher from promptly rotating to implement the impurity of its function.

Fig. 5 illustrates, and brush head 16 (or 17) forms two independent parts, an agglomerate base portion 23 and an agglomerate 24.Base portion 23 has and holds the hole 25 of molding short column 26 integrally.The effect that the lip limit 27 that raises is formed at the base portion inboard is, overlaps onto peripheral skirt 28 on the agglomerate so that agglomerate is held down on base portion 23.Groove 29 allows blunt instrument such as screwdriver tip to enter under the skirt section 28, is used for agglomerate upwards prized removing agglomerate when lip limit 27 need to be beneficial to.

It should be noted that, in above-mentioned toothbrush, used two brush head.Also can use only brush head or three or more.At latter event, use brush head (having lug) so that wobble drive is passed to another brush head by suitable connecting rod 20.

Above-mentioned pusher 14 is provided by the crank end of driving shaft 12.Pusher also can adopt other forms of minor axis that the one face down bonding is connected to an end of straight line or non-crank drive shaft that are included in.Also can adopt the noncircular pad that is installed on or is integrally formed in drive shaft end.Can adopt circular discs, install prejudicially the end of its contiguous driving shaft 12.

In optional embodiment, the outer surface of pusher to lug 18,19 is set, rather than the inner surface pushing, so that make brush head 16 swings.

Above-mentioned lug has the arc shaft composition surface.Can understand, although can adopt flat being coupling to close the surface as mentioned above, this kind surface can produce more noises in operation.Reach in this case in fact in the above-described embodiments, between the lug separately may be crucial relatively (if desired, allowing to remove easily impurity) because the effective actual swing of whole brush head can realize by about 20 ° arc.

Claims

1. electric toothbrush, it has the elongate shaft portion (11) that a handgrip (10) and has longitudinal axis (A), one electro-motor (13), one is rotatable and the elongated driving shaft (12) of the pusher (14) of biasing arranged laterally at its far-end around above-mentioned longitudinal axis (A), at least one is installed on above-mentioned shank (11) with the brush head (16) around an axle rotation that extends laterally, it is characterized in that, with a pair of on the opposite side of above-mentioned longitudinal axis (A) vertically opposed lug (18,19) be installed on the periphery of above-mentioned at least one brush head (16), be used for mechanical engagement at intermittence, make that above-mentioned at least one brush head (16) is swung rotatably when above-mentioned axle is rotated by said motor (13) by above-mentioned pusher (14).

2. electric toothbrush as claimed in claim 1 is characterized in that, above-mentioned lug (18,19) has arc shaped support surface, and above-mentioned pusher (14) rests on this lug off and on when above-mentioned axle (12) rotation.

3. electric toothbrush as claimed in claim 1, it is characterized in that, it comprises two rotatable brush heads (16 that supported by above-mentioned shank (11), 17), wherein above-mentioned second brush head (17) is by being passed on above-mentioned second brush head (17) with the swing with above-mentioned brush head (16) in the linkage component swing of extending between the above-mentioned brush head (16,17).

4. electric toothbrush as claimed in claim 3 is characterized in that, above-mentioned second brush head (17) is around the angled rotation of axis of a substantially vertical above-mentioned rotation axis with respect to above-mentioned brush head (16).

5. as each described electric toothbrush in the claim 1 to 4, it is characterized in that each above-mentioned brush head (16,17) has the base portion (23) and of determining and is engaged in the interior removable agglomerate (24) of above-mentioned agglomerate base portion releasedly.