CN100350884C

CN100350884C - Vertical brushing type electric toothbrush

Info

Publication number: CN100350884C
Application number: CNB200410008990XA
Authority: CN
Inventors: 黄邦俊
Original assignee: Truly Electronics Manufacturing Ltd
Current assignee: Truly Electronics Manufacturing Ltd
Priority date: 2004-03-23
Filing date: 2004-03-23
Publication date: 2007-11-28
Anticipated expiration: 2024-03-23
Also published as: CN1672659A

Abstract

The invention discloses a vertical brush type electric toothbrush, which comprises a toothbrush handle (2), a toothbrush head (3), a speed change gear set (12), a connecting rod device (8) and a toothbrush head driving pull rod (9), wherein the speed change gear set (12) is provided with an eccentric shaft (122) which can convert the rotary motion of the speed change gear set into the reciprocating linear motion of the toothbrush head driving pull rod (9); the back of the toothbrush head (3) is convexly provided with an oblique square column (31) which upwards penetrates through a rectangular hole (21) of the toothbrush handle (2) from the bottom, the upper part of the oblique square column is extended into an oblique rectangular slotted hole (91) at the head part of the toothbrush head driving pull rod (9) and is in loose fit, a guide shaft (34) which is vertical to the axis of the toothbrush handle (2) penetrates through a guide hole (33) to be fixed on the toothbrush handle (2), and the toothbrush head (3) can do reciprocating linear motion along the guide shaft (34). The electric toothbrush of the invention has the advantages that the toothbrush bristles brush back along the interdental direction, thereby not only effectively removing the dirt in the interdental space, but also conforming to the scientific tooth brushing method recommended by dentists.

Description

The verticlly-brushing type electric toothbrush

Technical field

The present invention relates to power-actuated cleaning or polishing device, particularly daily electric toothbrush.

Background technology

The mode that its head toothbrushes great majority of existing electric toothbrush adopt rotation to scrub, as Chinese patent CN 2412546, CN 2080343 disclosed technical schemes, they all utilize the rotary toothbrush head to come cleaning teeth.Also have the swing adopted to scrub the electric toothbrush (CN 2154025Y) of mode, it adopts fork to stir the mode of head toothbrushes swing, and bristle swings back and forth with arching trajectory and reaches the effect of cleaning teeth.U.S. Pat 8778474 and US 5504958 disclosed electric toothbrushes, though adopted the mode of crank mechanism and single-row bristle swing, but because of each row's head toothbrushes is rotatably mounted on the axle, so single-row bristle is with arching trajectory swing cleaning teeth equally.And the teeth brushing way of science should be a bristle along the direction brush of teeth space, promptly perpendicular brush, and therefore, the requirement that the teeth brushing way of existing electric toothbrush is brushed teeth not in full conformity with science is difficult to reach and protects the purpose that tooth can effectively be removed dirt in the teeth space simultaneously again.

Summary of the invention

The technical problem to be solved in the present invention is to overcome above-mentioned the deficiencies in the prior art part and provide a kind of bristles to do verticlly-brushing type electric toothbrush perpendicular to the straight reciprocating motion of brush length direction.

The present invention takes following technical scheme: design a kind of verticlly-brushing type electric toothbrush, comprise: the motor of toothbrush body and inner chamber thereof and change-speed gearing group, handle with the top active buckle of toothbrush body, the head toothbrushes that is arranged on described handle leading portion zone and flexibly connects with brush holder, described change-speed gearing group is provided with eccentric stiffener, and this eccentric stiffener converts rotatablely moving of described change-speed gearing group to round rectilinear motion that head toothbrushes drives pull bar by linkage; The back side of described head toothbrushes is convexly equipped with a transferring power and can changes the oblique square column of thrust direction, there is a pilot hole this oblique square column base portion side, after described oblique square column was upward through the slot of described handle from the bottom, the oblique rectangle slotted eye that head toothbrushes driving rod head is stretched on its top was loose fit; Two ends are erected on the handle and pass the pilot hole at the described head toothbrushes back side perpendicular to the axis of guide of handle axis direction, the head toothbrushes and the axis of guide are are slidingly matched.

Described motor drives head toothbrushes by change-speed gearing group and linkage and drives the round rectilinear motion of pull bar work, described head toothbrushes drives pull bar and promotes the oblique square column at the described head toothbrushes back side by the oblique rectangle slotted eye of head, make head toothbrushes do reciprocating linear motion along the axis of guide only, thereby guaranteed the direction of motion of head toothbrushes and the axis normal of handle, realized perpendicular brush.

Described eccentric stiffener is the eccentric shaft that is convexly equipped with on the driven gear of described change-speed gearing group; Described linkage comprises: connecting rod, be used to flexibly connect the union joint and the pull rod shaft of toothbrush body and handle; Described rod rear end is connected with eccentric shaft axle on the described driven gear, and its front end is connected with the rearward end axle of union joint; Fixedly connected with the rearward end that head toothbrushes drives pull bar with the leading section of union joint respectively in the two ends of described pull rod shaft.Motor drive driven gear and on eccentric shaft rotate, described eccentric shaft by connecting rod, union joint and pull rod shaft up and down the push-and-pull head toothbrushes drive pull bar.

In order to improve brushing efficiency, also can one rotational head be set at the handle front end, this rotational head is connected with the handle rotary moveable, and its back side left vertical is convexly equipped with a driving shaft; Described head toothbrushes drives pull bar front end left side and extends a pulling-on piece, and this pulling-on piece front end has a slide opening, and described slide opening is the strip straight hole that two ends, left and right sides semicircular in shape closes up, and this slide opening is socketed on the described driving shaft; Described motor drives head toothbrushes driving pull bar and pulling-on piece moves up and down, and pulling-on piece promotes rotational head back and forth rotation in certain angle by the driving shaft of rotational head back side eccentric position.

There is central shaft hole at the described rotational head back side, and this central shaft hole cooperates with the drop axle rotation that is installed in handle; Place, off-center axis hole right side, the rotational head back side is provided with one section arcuate neck, this arcuate neck and the rotational head back side surround the on-slip groove that falls, described handle right side wall is provided with a fan-shaped protruding key, this fan-shaped protruding key places the on-slip at the rotational head back side groove that falls, and makes rotational head be the suspension status of rotating around the handle drop axle in certain angle.

Compared with prior art, verticlly-brushing type electric toothbrush of the present invention has following beneficial effect: when the head toothbrushes of electric toothbrush is put into the oral cavity of user naturally, the round linear movement direction of bristles is consistent with the direction of tooth seam, be that bristles is come backwash along the direction of tooth, therefore can not only effectively remove the dirt of dental surface and teeth space, damage tooth surface not meets the science method for brushing teeth that odontologist is recommended again.

Description of drawings:

Fig. 1 is the structural representation of the embodiment of the invention one;

Fig. 2 is the structural representation that the critical piece head toothbrushes of the embodiment of the invention one drives pull bar 9, head toothbrushes 3, handle 2 and driven gear 121;

Fig. 3 is the assembling sketch map of the handle and the head portion of the embodiment of the invention one;

Fig. 4 is the head toothbrushes of the embodiment of the invention one and the sketch map of the driver part direction of motion thereof; (a), eccentric shaft is placed in the middle, (b), eccentric shaft is downward, (c), eccentric shaft upwards;

Fig. 5 is the structural representation of the embodiment of the invention two;

Fig. 6 is the assembling sketch map of the handle and the head portion of the embodiment of the invention two;

Fig. 7 is the sketch map of the embodiment of the invention two head toothbrushes and the driver part direction of motion thereof; (a), eccentric shaft is placed in the middle, (b), eccentric shaft is downward, (c), eccentric shaft upwards.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing and embodiment shown in the drawings.

Embodiment one

As shown in Figure 1, verticlly-brushing type electric toothbrush of the present invention comprises: place the motor 11 of toothbrush body 1 inner chamber and the change-speed gearing group 12 that is driven by motor 11, the head toothbrushes 3 that is installed in toothbrush body 1 vertical handle 2 and is arranged on this handle 2 leading portions zone and flexibly connects with handle 2, the front of this head toothbrushes 3 is fixed with bristles 31.Described change-speed gearing group 12 comprises driving gear 123 and the driven gear 121 that is fixed on motor 11 power output shafts, be provided with eccentric shaft 122 (Fig. 2) on driven gear 121, this eccentric shaft 122 converts rotatablely moving of described change-speed gearing group 12 to round rectilinear motion that head toothbrushes drives pull bar 9 by linkage 8.Described linkage 8 comprises connecting rod 81, union joint 82 and the pull rod shaft 83 that connects successively from back to front; Connecting rod 81 two ends are connected with the rearward end axle of eccentric shaft 122 and union joint 82 respectively, fixedly connected with the rearward end that head toothbrushes drives pull bar 9 with the leading section of union joint 82 respectively in the two ends of pull rod shaft 83.

Fig. 2 is the structural representation that the critical piece head toothbrushes of present embodiment one drives pull bar 9, head toothbrushes 3, handle 2 and driven gear 121.The back side of described head toothbrushes 3 is provided with oblique square column 31 and as the square protruding key 32 of oblique square column 31 base portions, has the pilot hole 33 of vertical handle 2 axis on square protruding key 32 sidewalls.Described handle 2 bottoms have a slot 21, and handle 2 has the locating hole 22 perpendicular to handle 2 axis on the sidewall of slot 21 left and right sides.Described head toothbrushes drives pull bar 9 heads and has an oblique rectangle slotted eye 91, and its angle of inclination is consistent with the angle of inclination of oblique square column 31.Described oblique square column 31 is upward through the slot 21 of handle 2 from the bottom, the oblique rectangle slotted eye 91 that head toothbrushes driving pull bar 9 heads are stretched on its top is loose fit, described square protruding key 32 is inserted in the slot 21 of handle 2, the width of described square protruding key 32 should be slightly less than the width of slot 21, and its length adds that the amplitude of head toothbrushes 3 side-to-side vibrationss should be slightly less than the length of slot 21.One two ends are fixed on the handle 2 both sides locating holes 22 and are slidingly matched with head toothbrushes 3 perpendicular to the pilot hole 33 that the axis of guide 34 of handle 2 axis passes described head toothbrushes 3 back sides, and head toothbrushes 3 can be along the axis of guide 34 slide flexibly (Fig. 3).

As Fig. 1, the postmedian of described handle 2 is fixed with the pipe position cover 5 that is used to avoid pull rod shaft 83 off-center axles, and described pull rod shaft 83 is passed pipe position cover 5 and is slidingly matched with it.

As shown in figures 1 and 3, described handle 2 is made of handle protecgulum 23 and handle bonnet 24, and handle 2 is along axis hollow, and described pull rod shaft 83, head toothbrushes drive pull bar 9, pipe position cover 5 and union joint 82 and be placed in one.

Described toothbrush body 1 rear portion is provided with battery chamber 17, and the set of cells 18 in the battery chamber 17 is electrically connected with motor 11, and the gauge tap of motor 11 is arranged on the outer wall of toothbrush body 1.

When pressing the gauge tap of pressure motor 11, motor 11 drives head toothbrushes by change-speed gearing group 12 and linkage 8 and drives the round rectilinear motion of pull bar 9 works, the hole wall that head toothbrushes drives the oblique rectangle slotted eye 91 of pull bar 9 heads will promote the oblique square column 31 at head toothbrushes 3 back sides, make head toothbrushes 3 make the reciprocal rectilinear motion of high speed, as shown in Figure 4 along the axis of guide 34.When the eccentric shaft on the driven gear 121 122 was in middle position, head toothbrushes driving pull bar 9 is pushed into middle position with head toothbrushes 3, and (Fig. 4 a); When the eccentric shaft on the driven gear 121 122 moved down, head toothbrushes drove pull bar 9 and also moves down, and promoted head toothbrushes 3 and was moved to the left (Fig. 4 b); When the eccentric shaft on the driven gear 121 122 moved up, head toothbrushes drove pull bar 9 and also moves up, and promoted head toothbrushes 3 move right (Fig. 4 c).Change-speed gearing group 12 is constantly rotated, and the eccentric shaft 122 on the driven gear 121 is constantly moved up and down, and head toothbrushes drives pull bar 9 also along with moving up and down, and promotes head toothbrushes 3 quick side-to-side vibrationss.

Embodiment two

The place that present embodiment is different from embodiment one is exactly to set up a circular rotational head 4 to improve brushing efficiency at handle 2 front ends, as shown in Figure 5 and Figure 6, these rotational head 4 back sides have central shaft hole 41, this central shaft hole 41 cooperates with drop axle 27 rotations that are installed in handle 2, central shaft hole 41 left vertical are convexly equipped with a driving shaft 42, central shaft hole 41 right sides places is provided with one section arcuate neck, and this arcuate neck and rotational head 4 back sides surround the on-slip groove 44 that falls.Correspondingly, handle 2 front ends have a manhole 25, convex with a fan-shaped protruding key 26 on its right side wall, this fan-shaped protruding key 26 places the on-slip at rotational head 4 back sides groove 44 that falls, and makes rotational head 4 hang on the handle 2 and can rotate in certain angle around handle 2 drop axles 27.Described head toothbrushes drives pull bar 9 front ends left side and extends a pulling-on piece 92, these pulling-on piece 92 front ends have a slide opening 921 and are socketed on the described driving shaft 42, described slide opening 921 is the strip straight hole that two ends, left and right sides semicircular in shape closes up, and its longitudinal aperture is a bit larger tham the diameter of described rotational head 4 driving shafts 42.Motor 11 drives that described head toothbrushes drives pull bar 9 and pulling-on piece 92 moves up and down, and the eccentric drive shaft 42 driven rotary brushes 4 of the hole wall of described slide opening 921 by promoting rotational head 4 are the axle center with the fixed axis, back and forth rotate in certain angle.When the eccentric shaft on the driven gear 121 122 was in middle position, the sidewall that head toothbrushes drives the slide opening 921 of pull bar 9 and pulling-on piece 92 front ends thereof is pushed into middle position with head toothbrushes 3 and rotational head 4, and (Fig. 7 a); When the eccentric shaft on the driven gear 121 122 moved down, the slide opening 921 that head toothbrushes drives pull bar 9 and front end also moved down, and promoted head toothbrushes 3 and was moved to the left, and the sidewall driven rotary brush 4 of slide opening 921 rotates counterclockwise (Fig. 7 b) simultaneously; When the eccentric shaft on the driven gear 121 122 moved up, the slide opening 921 that head toothbrushes drives pull bar 9 and front end also moved up, and promoted head toothbrushes 3 and moved right, and the sidewall driven rotary brush 4 of slide opening 921 clockwise rotates (Fig. 7 c) simultaneously.Therefore, described motor 11 drives described head toothbrushes and drives pull bar 9 and move up and down, and the sidewall driven rotary brush 4 that head toothbrushes drives pull bar 9 front ends left side slide opening 921 is the axle center with the fixed axis, back and forth rotates in certain angle, and its movement locus is one section circular arc line.

Claims

1, a kind of verticlly-brushing type electric toothbrush, comprise: the motor (11) of toothbrush body (1) and inner chamber thereof and change-speed gearing group (12), handle (2) with toothbrush body (1) top active buckle, the head toothbrushes (3) that is arranged on described handle (2) leading portion zone and flexibly connects with brush holder (2) is characterized in that:

Described change-speed gearing group (12) is provided with eccentric stiffener, and this eccentric stiffener converts rotatablely moving of described change-speed gearing group (12) to round rectilinear motion that head toothbrushes drives pull bar (9) by linkage (8); The back side of described head toothbrushes (3) is convexly equipped with a transferring power and can changes the oblique square column (31) of thrust direction, there is a pilot hole (33) this oblique square column (31) base portion side, after described oblique square column (31) was upward through the slot (21) of described handle (2) from the bottom, the oblique rectangle slotted eye (91) that head toothbrushes driving pull bar (9) head is stretched on its top was loose fit; Two ends are erected at that handle (2) goes up and pass the pilot hole (33) at described head toothbrushes (3) back side perpendicular to the axis of guide (34) of handle (2) axis direction, the head toothbrushes (3) and the axis of guide (34) are are slidingly matched;

Described motor (11) drives head toothbrushes by change-speed gearing group (12) and linkage (8) and drives the round rectilinear motion of pull bar (9) work, described head toothbrushes drives pull bar (9) and promotes the oblique square column (31) at described head toothbrushes (3) back side by the oblique rectangle slotted eye (91) of head, makes head toothbrushes (3) along the linear reciprocating motion of the axis of guide (34) work perpendicular to handle (2) axis.

2, verticlly-brushing type electric toothbrush according to claim 1 is characterized in that: described eccentric stiffener is the eccentric shaft (122) that is convexly equipped with on the driven gear (121) of described change-speed gearing group (12); Described linkage (8) comprising: connecting rod (81), be used to flexibly connect the union joint (82) and the pull rod shaft (83) of toothbrush body (1) and handle (2); Eccentric shaft (122) axle on described connecting rod (81) rear end and the described driven gear (121) is connected, and its front end is connected with the rearward end axle of union joint (82); Fixedly connected with the rearward end that head toothbrushes drives pull bar (9) with the leading section of union joint (82) respectively in the two ends of described pull rod shaft (83).

3, verticlly-brushing type electric toothbrush according to claim 1 is characterized in that: oblique square column (31) base portion at described head toothbrushes (3) back side is a square protruding key (32), and this square protruding key (32) is inserted in the slot (21) of handle (2); The width of described square protruding key (32) is slightly less than the width of slot (21), and its length adds that the amplitude of head toothbrushes (3) side-to-side vibrations is slightly less than the length of slot (21).

4, the described verticlly-brushing type electric toothbrush of claim 2, it is characterized in that: the postmedian of described handle (2) is provided with the pipe position cover (5) that is used to avoid pull rod shaft (83) off-center axle, and described pull rod shaft (83) is passed described pipe position cover (5) and is slidingly matched with it.

5, verticlly-brushing type electric toothbrush according to claim 4, it is characterized in that: described handle (2) is made of handle protecgulum (23) and handle bonnet (24), handle (2) is along axis hollow, and described pull rod shaft (83), head toothbrushes drive pull bar (9), pipe position cover (5) and union joint (82) and be placed in one.

6, according to the arbitrary described verticlly-brushing type electric toothbrush of claim 1 to 5, it is characterized in that: also comprise the rotational head (4) that is arranged on handle (2) front end, this rotational head (4) is connected with handle (2) rotary moveable, and its back side left vertical is convexly equipped with a driving shaft (42); Described head toothbrushes drives pull bar (9) front end left side and extends a pulling-on piece (92), and this pulling-on piece (92) front end has a slide opening (921) and is socketed on the described driving shaft (42); Described motor (11) drives head toothbrushes driving pull bar (9) and pulling-on piece (92) moves up and down, and pulling-on piece (92) promotes rotational head (4) back and forth rotation in certain angle by the driving shaft (42) of rotational head (4) back side eccentric position.

7, verticlly-brushing type electric toothbrush according to claim 6 is characterized in that: there is central shaft hole (41) at described rotational head (4) back side, and this central shaft hole (41) cooperates with the drop axle that is installed in handle (2) (27) rotation; Place, rotational head (4) back side off-center axis hole (41) right side is provided with one section arcuate neck, this arcuate neck and rotational head (4) back side surrounds the on-slip groove (44) that falls, described handle (2) right side wall is provided with a fan-shaped protruding key (26), this fan-shaped protruding key (26) places the on-slip at rotational head (4) back side groove (44) that falls, and makes rotational head (4) be the suspension status of rotating around handle (2) drop axle (27) in certain angle.

8, verticlly-brushing type electric toothbrush according to claim 6 is characterized in that: described rotational head (4) is circular brush.

9, verticlly-brushing type electric toothbrush according to claim 6 is characterized in that: the strip straight hole that described slide opening (921) closes up for two ends, left and right sides semicircular in shape, its longitudinal aperture is a bit larger tham the diameter of described rotational head (4) driving shaft (42).

10, according to the arbitrary described verticlly-brushing type electric toothbrush of claim 1 to 5, it is characterized in that: the rear portion of described toothbrush body (1) is provided with battery chamber (17), set of cells (18) in this battery chamber (17) is electrically connected with motor (11), and the gauge tap of motor (11) is arranged on the outer wall of toothbrush body (1).