CN2614048Y

CN2614048Y - Electric toothbrush

Info

Publication number: CN2614048Y
Application number: CNU032572115U
Authority: CN
Inventors: 戴晓国
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-09
Filing date: 2003-05-09
Publication date: 2004-05-05
Anticipated expiration: 2013-05-09
Also published as: WO2004098445A1

Abstract

The utility model mainly relates to a driving mechanism (13) for connecting a motor (15) and a driving shaft (11). The utility model comprises a motor driving wheel (14) which is connected with a motor shaft, an eccentric pin needle (18) and a shifting fork, wherein the longitudinal shaft line of the eccentric pin needle is parallel to a longitudinal shaft of the driving wheel (14), and the eccentric pin needle relative to the driving wheel (14) is eccentric; one end of the shifting fork is tightly matched with the driving shaft (11), and the other end is provided with a slot (219), one end of the eccentric pin needle (18) is embedded into the driving wheel (14), and the other end is embedded into the slot (219) of the shifting fork. A music box (16) is arranged in a toothbrush handle part (22) for enhancing the interest of a child for a toothbrush. Along with the rotation of the toothbrush, the music box (16) emits different dulcet sound, and the music box can play recorded sound to remind users. The electric toothbrush supplied by the utility model has the characteristics of small volume, simple structure, convenient processing and disassembly, stable rotation of a toothbrush body, less power consumption, low price, convenient use and combination of tooth brushing with entertainment.

Description

Electric toothbrush

Technical field

This utility model relates to a kind of electric toothbrush, relates in particular to the driving mechanism of electric toothbrush.

Background technology

Existing electric toothbrush generally includes handle portion and brush body part, and brush body part removably links to each other with handle portion.The motor that is loaded in the handle portion drives power transmission shaft by drive mechanism, and rotating axle and rotating bristle supports are installed in the brush body part, and above-mentioned power transmission shaft links to each other with the lower end of rotating shaft in being loaded on brush body part by a bindiny mechanism.The upper end of brush body rotating shaft links to each other with bristle supports by another bindiny mechanism.

Publication number is to have described a kind of structure of utilizing gear to drive power transmission shaft as drive mechanism in the application for a patent for invention of CN1044041A.This drive mechanism has a drive bevel gear by driven by motor, drive bevel gear and driven wheel of differential engagement.Driven wheel of differential centers on the axis rotation along the horizontal expansion of connecting rod, and an eccentric shaft that is parallel to its axis on this gear stretches in the fixture of rocking arm.Above-mentioned rocking arm is fixed on one can be at the handle portion axis to moving and rotation and along in the rotating shaft of lever longitudinal extension.This gear drive complex structure, volume is bigger, and kinetic equation loss is big, and transmission efficiency is low.

U.S. Pat-PS4827550 has disclosed a kind of mechanism that connects electric toothbrush power transmission shaft and brush body rotating shaft, wherein, there is a ring-type concave area end of the contiguous brush body rotating shaft of power transmission shaft, and this concave area is near the transmission the tip of the axis, thereby formation is towards the termination and the shoulder of handle portion upper end.Above-mentioned termination is cone tip shape in the end of power transmission shaft, so that insert in the brush body rotating shaft.Because the brush body volume is little, process that this awl point-the shoulder structure is very time-consuming, so, increased production cost.

U.S. Pat-PS4156620 has also disclosed the mechanism that a kind of electric toothbrush brush body part is connected with bristle supports, and a tooth bar connecting rod is arranged in its brush body, and a gear is housed on each woollen brush base of bristle supports.All gears in one row's woollen brush base are engaged with each other, one and connecting rod engagement in per two gears.Because a lot of gears are arranged, and connecting rod is tooth bar, so complex structure, volume increases.For gear is not blocked, the manufacturing tolerance of permission is very little, causes the manufacturing cost height.

Publication number above-mentioned is that the brush body part that has also disclosed electric toothbrush in the Chinese invention patent application of CN1044041A links to each other with handle portion by a kayser joint, with the dismounting of realization brush body.This structure can not guarantee that brush body works reposefully, and the kayser joint is located at the outside, has increased toothbrush volume, causes and uses inconvenience.

In addition, current toothbrushes all has only the single function that cleans one's teeth.For the child, brushing teeth with ordinary toothbrush is a very uninteresting thing, thereby many childs dislike brushing teeth, and this is unfavorable from little good habit of conscientiously brushing teeth to cultivating the child.

The technical problems to be solved in the utility model is to try hard to overcome that existing electric toothbrush gear drive complex structure, volume are big, kinetic equation loss is big, rotational efficienty is low; Bindiny mechanism's complex structure between power transmission shaft and the brush body rotating shaft, processing difficulties, cost height; Brush body rotates not steadily, volume is big and use inconvenience; Be unfavorable for cultivating the shortcoming of the good habit that the child conscientiously brushes teeth, provide that a kind of volume is little, simple in structure, processing and convenient disassembly, brush body stability of rotation, power consumption are little, cheap, easy to use, residence is brushed teeth the electric toothbrush among amusement.

The technical scheme that addresses the above problem that the utility model proposes is: the driving mechanism of above-mentioned connection motor and power transmission shaft comprises that a motor driving wheel that links to each other with motor shaft, longitudinal axis are parallel to the above-mentioned driving wheel longitudinal axis and the shift fork of a slit is arranged with respect to the eccentric eccentric pin of driving wheel and one one end and the power transmission shaft close-fitting other end, one end of above-mentioned eccentric pin embeds in the driving wheel, and the other end inserts in the slit of shift fork.

In order to improve the interest of child to brushing teeth, can in the handle portion of toothbrush, adorn a music box, rotation along with toothbrush, music box can send melodious song or nursery rhymes sound or mother's fondle sound, also can regularly play the language recording of oneself, to remind user, brush teeth and carry out a period of time.

Can process one at the end face that cooperates with power transmission shaft of brush body rotating shaft is the blind hole of cheese head screw shape towards inner that extend, the cross section of rotating shaft axially along rotating shaft, and the round end of this blind hole partly is the arc greater than semicircle.Power transmission shaft closes on the end of brush body rotating shaft end and inserts in the above-mentioned blind hole, and power transmission shaft directly is connected with the brush body rotating shaft.

For the volume that reduces toothbrush and make the brush body part stability of rotation, can with the end handle portion interface a blind hole be set the brush body liner, radial side along the hole is provided with an outside projection, this projection is on the center in hole, and the relative side of the above-mentioned side of Kong Shangyu is provided with at least one projection inwardly.The lever interface with above-mentioned blind hole to the corresponding part of outer process also have one with this to outer process match to outer process, have on its opposite side at least one and blind hole towards inner process match towards inner process.The diameter of lever interface is less than the diameter of brush body liner mesopore.

Is pot shape installation portion to a side opening at the hollow support pipe of brush body part away from an end of handle portion, and initiatively bevel gear and driven bevel pinion and bristle supports are installed in this installation portion.On the end of brush body rotating shaft, have a blind hole away from handle portion, on the axis that is centered close to rotating shaft of blind hole, one end of a connecting pin tightly inserts in the above-mentioned blind hole coaxially, and driving bevel gear is housed on the other end of connecting pin coaxially, above-mentioned connecting pin and active bevel gear close-fitting.Inlay a steady pin on the sidewall of the pot shape installation portion of hollow support pipe, bristle supports and driven bevel gear are all coaxial rotationally to be installed on this steady pin, and above-mentioned driving bevel gear and driven bevel pinion are engaged with each other, and their central angle alpha are less than or equal to 90 °.

Can also radially process the groove that is parallel to this Gear axis together along it in driven gear one side, stretch out a ledge that is parallel to the bristle supports axis from the end face of the end that cooperates with driven gear of bristle supports, this ledge inserts in the above-mentioned groove of driven gear, two abutting end faces of driven bevel gear and bristle supports are parallel to each other, thereby bristle supports and driven bevel gear are rotated synchronously.

Also can on the outer wall of bristle supports one side, process one groove, a restriction pin is inserted in the above-mentioned groove, the other end of this restriction pin is fixed on the roof of hollow support pipe pot shape installation portion, by this structure, bristle supports is moved along the axial limited of fixed axis.

This utility model adopts eccentric pin and slit shifting fork mechanism to drive power transmission shaft, simple in structure, easy to process, dwindled the brush body volume, saved the space, kinetic equation loss is little, the transmission efficiency height; Adorn a music box in the handle portion of toothbrush, along with the rotation of toothbrush, the melodious sound that music box sends helps cultivating the great interest of child to brushing teeth, and forms the child from little good habit of conscientiously brushing teeth; The power transmission shaft upper end directly is connected with the brush body rotating shaft, has further reduced kinetic equation loss, and transmission efficiency is higher; The brush body liner adopts concaveconvex structure to be connected with the both sides of handle portion interface, and brush body is easy to loading and unloading, and brush body rotates more steady; Again because select bevel gear engaging structure with casting or injection moulding process processing, more make easy to processly, cost reduces.

Description of drawings

Fig. 1 is the schematic longitudinal sectional view of electric toothbrush described in the utility model;

Fig. 2 is the connection diagram of motor-driven mechanism and power transmission shaft;

Fig. 3 a is the schematic elevational view of power transmission shaft and dress shift fork thereon;

Fig. 3 b is the side view of Fig. 3 a;

Fig. 3 c is the vertical view of Fig. 3 a;

Fig. 4 is the schematic longitudinal sectional view of this electric toothbrush brush body part;

Fig. 5 a is the schematic longitudinal sectional view that cooperates an end with power transmission shaft of brush body rotating shaft;

Fig. 5 b is the G-G cutaway view of Fig. 5 a;

Fig. 6 a is the schematic longitudinal sectional view of brush body liner;

Fig. 6 b is the C-C cutaway view of Fig. 6 a;

Fig. 7 is the vertical view of lever interface;

Fig. 8 a is the schematic longitudinal sectional view of driven bevel gear;

Fig. 8 b is the schematic side elevation of driven bevel gear;

Fig. 9 a is the schematic longitudinal sectional view of bristle supports;

Fig. 9 b is the schematic side elevation of bristle supports.

Identical Reference numeral is represented same parts in the accompanying drawing.

The specific embodiment

Fig. 1 is the schematic longitudinal sectional view of electric toothbrush described in the utility model.Electric toothbrush described in the utility model comprises handle portion 22 and brush body part 1, and handle portion 22 comprises power transmission shaft 11, lever housing 12, driving device 13, motor 15, music box 16 and battery 17.

Fig. 2 is the connection diagram of motor-driven mechanism 13 and power transmission shaft 11.Fig. 3 a is the schematic elevational view of power transmission shaft 11 and dress shift fork 19 thereon; Fig. 3 b is the side view of Fig. 3 a; Fig. 3 c is the vertical view of Fig. 3 a, and it shows the shape of slit 219.The driving mechanism 13 of above-mentioned connection motor 15 and power transmission shaft 11 comprises a shift fork 19 that is parallel to the longitudinal axis of above-mentioned driving wheel 14 with the motor driving wheel that links to each other of axle 14 of motor 15, longitudinal axis and a slit 219 is arranged with respect to driving wheel 14 eccentric eccentric pins 18 and one one end and the power transmission shaft 11 close-fitting other ends, one end of above-mentioned eccentric pin 18 embeds in the driving wheel 14, and the other end inserts in the slit 219 of shift fork 19.

Fig. 4 is the schematic longitudinal sectional view of this electric toothbrush brush body part 1.Brush body part 1 comprises a hollow support pipe 2, brush body rotating shaft 4 is housed at pipe in 2, and rotating shaft 4 links to each other with motor-driven mechanism 13 in being contained in handle portion 22 by power transmission shaft 11, motor-driven mechanism 13 link to each other with motor 15 (seeing Fig. 1,2).

Fig. 5 a is the schematic longitudinal sectional view that cooperates an end with power transmission shaft of brush body rotating shaft; Fig. 5 b is the G-G cutaway view of Fig. 5 a.Kinetic equation loss when driving brush body rotating shaft 4 in order to reduce power transmission shaft 11, processing one on the end face of that end that cooperates with power transmission shaft 11 of brush body rotating shaft 4 is the blind hole 511 of cheese head screw shape towards inner that extend, the cross section of rotating shaft 4 axially along rotating shaft 4, the round end part 512 of this blind hole 511 is the arc greater than semicircle, and directly insert in the blind hole 511 end of the power transmission shaft 11 of Pei Heing with it.

Fig. 6 a is the schematic longitudinal sectional view of brush body liner 3; Fig. 6 b is the C-C cutaway view of Fig. 6 a.Fig. 7 is the vertical view of lever interface 20.End that is connected with handle portion 22 at brush body liner 3 is provided with a blind hole 611, a radial side of 611 is provided with an outside projection 612 along the hole, this projection 612 is on the center in hole 611, and a side relative with above-mentioned side is provided with at least one projection 613 (seeing Fig. 6 a and 6b) inwardly on hole 611.The respective side of lever interface 20 and above-mentioned blind hole 611 to outer process 612 corresponding parts also have one with match to outer process 612 to outer process 712, have on its opposite side at least one and blind hole 611 towards inner process 613 match towards inner process 713 (see figure 7)s.The diameter of lever interface 20 is less than the diameter of blind hole 611 in the brush body liner 3.

Adopt concaveconvex structures (612,613,712,713) to connect owing to reach the both sides of handle portion interface 20 in brush body liner 3, reduced the volume of toothbrush, brush body is easy to loading and unloading, and brush body rotates more steady.

Seeing Fig. 4 again, is pot shape installation portion 21 to a side opening at the hollow support pipe 2 of brush body part 1 away from an end of handle portion 22, is used for installing initiatively bevel gear 6 and driven bevel pinion 7 and bristle supports 9.Have a blind hole in brush body rotating shaft 4 away from an end of handle portion 22, on the axis that is centered close to rotating shaft 4 of blind hole, an end of connecting pin 5 tightly inserts in the above-mentioned blind hole coaxially.Driving bevel gear 6 is housed coaxially, connecting pin 5 and active bevel gear 6 close-fittings on the other end of connecting pin 5.Inlay a steady pin 8 on the sidewall of the pot shape installation portion 21 of the hollow support pipe 2 of brush body part 1, bristle supports 9 and driven bevel gear 7 are loaded on the said fixing pin 8 coaxially with form movingly, that is to say that driven gear 7 both can rotate also and can move with respect to steady pin 8.Above-mentioned driving bevel gear 6 and driven bevel pinion 7 are engaged with each other, and their central angle is less than or equal to 90 ° (seeing Fig. 8 b).

Fig. 8 a is the schematic longitudinal sectional view of driven bevel gear 7; Fig. 8 b is the schematic side elevation of driven bevel gear 7.Fig. 9 a is the schematic longitudinal sectional view of bristle supports; Fig. 9 b is the schematic side elevation of bristle supports.For bristle supports 9 and driven gear 7 are rotated synchronously, radially process the groove 811 (seeing Fig. 8 a, 8b) that is parallel to this Gear axis together along it in driven gear 7 one sides.Stretch out a ledge 911 (seeing Fig. 9 a, 9b) that is parallel to bristle supports 9 axis from the end face of the end that cooperates with driven gear 7 of bristle supports 9, this ledge 911 inserts in the groove 811 of driven gear 7, two abutting end faces of driven bevel gear 7 and bristle supports 9 are parallel to each other, thereby make bristle supports 9 and driven bevel gear 7 synchronous.On the outer wall of bristle supports 9 one sides, process groove 912 one, a restriction pin 10 is inserted in the groove 912, these restriction pin 10 other ends are fixed on the roof of pot shape installation portion 21 of hollow support pipe 2, by this structure, bristle supports 9 is moved along the axial limited of steady pin 8.

Motor 15 in being loaded on handle portion 22 drives driving wheel 14 when direction shown in the arrow E is rotated (Fig. 2) by its output shaft, the eccentric pin 18 that one end embeds driving wheel 14 moves back and forth in the slit 219 of shift fork 19 thereupon, cause power transmission shaft 11 with direction (Fig. 1 shown in the four-headed arrow A, 2) back and forth rotate, and drive brush body rotating shaft 4 is also back and forth rotated (Fig. 1,4) with direction shown in the four-headed arrow A.Under the drive of rotating shaft 4, connecting pin 5 rotates thereupon, and the driving bevel gear 6 with pin 5 close-fittings is rotated.Drive driven gear 7 by driving gear 6 and driven gear 7 engagements, thereby bristle supports 9 is back and forth rotated by direction shown in the four-headed arrow B (Fig. 1,4).Because the effect of restriction pin 10, bristle supports 9 can move along the axial of steady pin 8 limitedly.

In conjunction with the accompanying drawings the specific embodiment of the present utility model has been done exemplary description above, obviously, this utility model is not limited to this, and the various remodeling that carry out in this utility model scope all do not exceed protection domain of the present utility model.

Claims

1. electric toothbrush, comprise handle portion (22) and have the brush body part (1) of liner (3), brush body part (1) removably links to each other with handle portion (22), the motor (15) that is loaded in the handle portion (22) drives power transmission shaft (11) by a driving mechanism (13), brush body part (1) comprises that one one end has the hollow support pipe (2) of one pot of shape installation portion (21), rotating axle (4) is installed in the pipe (2), initiatively bevel gear (6) and driven bevel pinion (7) and bristle supports (9) are installed in the pot shape installation portion (21), it is characterized in that: above-mentioned driving mechanism (13) comprises a motor driving wheel (14) that links to each other with the axle of motor (15), longitudinal axis is parallel to above-mentioned driving wheel (14) longitudinal axis and the shift fork (19) of a slit (219) is arranged with respect to the eccentric eccentric pin of driving wheel (14) (18) and one one end and power transmission shaft (11) the close-fitting other end, one end of above-mentioned eccentric pin (18) embeds in the driving wheel (14), and the other end inserts in the slit (219) of shift fork (19).

2. electric toothbrush as claimed in claim 1 is characterized in that: a music box (16) is housed in above-mentioned handle portion (22).

3. electric toothbrush as claimed in claim 1 or 2, it is characterized in that: processing one on the end face of that end that cooperates with power transmission shaft (11) of brush body rotating shaft (4) is the blind hole (511) of cheese head screw shape towards inner that extend, the cross section of rotating shaft (4) axially along rotating shaft (4), the round end part (512) of this blind hole (511) is the arc greater than semicircle, and directly insert in the blind hole (511) end of the power transmission shaft of Pei Heing (11) with it.

4. electric toothbrush as claimed in claim 3, it is characterized in that: the end that is connected with handle portion (22) at brush body liner (3) is provided with a blind hole (611), a radial side of (611) is provided with an outside projection (612) along the hole, this projection (612) is on the center of hole (611), (611) are gone up a side relative with above-mentioned side and are provided with at least one projection (613) inwardly in the hole, the respective side of lever interface (20) and above-mentioned blind hole (611) to the corresponding part of outer process (612) also have one with match to outer process (612) to outer process (712), have on its opposite side at least one and blind hole (611) towards inner process (613) match towards inner process (713), the diameter of lever interface (20) is less than the diameter of blind hole (611) in the brush body liner (3).

5. electric toothbrush as claimed in claim 4, it is characterized in that: on the end of brush body rotating shaft (4), have a blind hole away from handle portion (22), on the axis that is centered close to rotating shaft (4) of blind hole, one end of a connecting pin (5) tightly inserts in the above-mentioned blind hole coaxially, driving bevel gear (6) is housed coaxially, connecting pin (5) and active bevel gear (6) close-fitting on the other end of connecting pin (5); Inlay a steady pin (8) on the sidewall of the pot shape installation portion (21) of above-mentioned hollow support pipe (2), bristle supports (9) and driven bevel gear (7) are loaded on the said fixing pin (8) coaxially with form movingly; Above-mentioned driving bevel gear (6) and driven bevel pinion (70) are engaged with each other, and their central angle alpha is less than or equal to 90 °.

6. electric toothbrush as claimed in claim 5, it is characterized in that: radially process the groove (811) that is parallel to this Gear axis together along it in driven gear (7) one sides, stretch out a ledge (911) that is parallel to bristle supports (9) axis from the end face of the end that cooperates with driven gear (7) of bristle supports (9), this ledge (911) inserts in the groove (811) of driven gear (7), and two abutting end faces of driven bevel gear (7) and bristle supports (9) are parallel to each other.

7 electric toothbrushes as claimed in claim 6, it is characterized in that: on the outer wall of bristle supports (9) one sides, process one groove (912), a restriction pin (10) is inserted in the groove (912), and the other end of this restriction pin (10) is fixed on the roof of pot shape installation portion (21) of hollow support pipe 2.