CN108720953B - Electric toothbrush - Google Patents
Electric toothbrush Download PDFInfo
- Publication number
- CN108720953B CN108720953B CN201810397292.5A CN201810397292A CN108720953B CN 108720953 B CN108720953 B CN 108720953B CN 201810397292 A CN201810397292 A CN 201810397292A CN 108720953 B CN108720953 B CN 108720953B
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- shell
- swing
- hole
- positioning
- motor
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- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims 2
- 230000001680 brushing effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 210000003128 head Anatomy 0.000 description 18
- 230000005291 magnetic effect Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000002064 Dental Plaque Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3454—Translation along the axis perpendicular of the axis of toothbrush handle and in the plane defined by the bristle holder
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Brushes (AREA)
Abstract
An electric toothbrush, includes shell and toothbrush head, installs motor, swinging arms and drive mechanism in the shell, and drive mechanism includes: the grooved pulley is coaxially arranged above the motor and can rotate along with the motor, the upper end surface of the grooved pulley is concavely provided with a sliding groove, and the sliding groove is a curved groove; the positioning frame is positioned above the grooved pulley, the upper end of the positioning frame is convexly provided with a round groove eccentric with the grooved pulley, and a first rolling bearing is arranged in the round groove; the lower end of the swing crank is provided with a rotating central shaft which is arranged on an inner hole of the first rolling bearing, the lower end of the swing crank is provided with a sliding shaft, the lower end of the sliding shaft is embedded in the sliding groove, the upper end of the swing crank is provided with a positioning hole for inserting the swing rod, and when the grooved pulley rotates, the swing crank rotates clockwise and anticlockwise back and forth in the sliding groove through the action of the inner wall and the outer wall of the sliding groove on the sliding shaft, so that the left and right reciprocating swing of the swing rod is realized. The invention has the advantages of reasonable structure, simple mechanical structure and circuit control, low production cost and good tooth brushing effect.
Description
Technical Field
The invention relates to a toothbrush, in particular to an electric toothbrush.
Background
The electric toothbrush is a toothbrush invented by Philipe-Guy world, the brush head generates high-frequency vibration through the rapid rotation or vibration of the motor core, toothpaste is instantaneously decomposed into fine foam to deeply clean the gaps between teeth, and meanwhile, the vibration of the brush hair can promote the blood circulation of the oral cavity and has a massage effect on gum tissues. The electric toothbrush can vibrate rapidly, effectively remove dental plaque, and has revolutionized the field of oral health at home and abroad.
The electric toothbrushes in the current market have a plurality of brands, the most notable brands are Euler B, philips, pingshui and the like, and the movement modes of the bristles during brushing mainly comprise four modes of vibration, horizontal swing, vertical swing and small-angle rotation swing. The electric toothbrush with the vibration mode has the advantages of simple structure and low price, namely, the motor drives the eccentric block to rotate and vibrate, but the tooth brushing effect is not ideal, and the use comfort is also not good. The electric toothbrush adopting the up-and-down swing or small-angle rotation swing mode has more complex structure, such as the Chinese patent electric toothbrush with patent number 200480017248.3 and the Chinese patent electric toothbrush with patent number 93116921.6, and the structure has the defects of high processing precision requirement, high noise and the like because of the bevel gear transmission mechanism and the eccentric wheel connecting rod mechanism with the rotation direction of 90 degrees. The working principle of the electric toothbrush which swings left and right is that products on the market at present use the working principle that direct current is converted into high-frequency alternating current to supply power to an electromagnetic coil, so that a high-frequency converted magnetic field is generated, and the high-frequency converted magnetic field and a magnetic field of a permanent magnet generate converted magnetic field force to push a toothbrush head to swing left and right, for example, a Chinese patent with the patent number 201180047155.5, namely a resonant actuator for the electric toothbrush which utilizes the magnetic effect, has the advantages of simple mechanical structure, no mechanical contact and friction loss, stable operation, low noise and the like, is widely used, but has complex circuit and higher production cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing the electric toothbrush which has the advantages of simple structure, low cost and good tooth brushing effect.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an electric toothbrush, includes shell and toothbrush head, installs motor and swinging arms in the shell, and the upper end of swinging arms is connected its characterized in that with the toothbrush head: the shell is internally provided with a transmission mechanism which converts the rotation of the motor into reciprocating motion and transmits the reciprocating motion to the swinging rod, and the transmission mechanism comprises:
the grooved pulley is arranged above the motor and can rotate along with the motor, an annular chute is concavely arranged on the upper end surface of the grooved pulley, and the chute is a curved chute;
the positioning frame is positioned above the grooved pulley, and the upper end of the positioning frame is convexly provided with an eccentric circular groove eccentric with the grooved pulley;
the lower end of the swing crank is provided with a rotating central shaft which is rotatably arranged on the eccentric circular groove, the other side of the lower end of the swing crank is provided with a sliding shaft, the lower end of the sliding shaft penetrates through the positioning frame to be embedded in the chute of the grooved pulley to slide, the upper end of the swing crank is provided with a positioning hole for inserting the lower end of the swing rod, and when the grooved pulley rotates, the swing crank can rotate clockwise and anticlockwise back and forth through the action of the inner wall and the outer wall of the chute on the sliding shaft, so that the left-right reciprocating swing of the swing rod is realized.
Further, a first rolling bearing is arranged in the eccentric circular groove, and the rotating central shaft is arranged on an inner hole of the first rolling bearing of the eccentric circular groove through interference fit.
As an improvement, a lower protecting shell, a middle protecting shell and an upper protecting shell are arranged in the shell, a transmission mechanism is arranged between the lower protecting shell and the middle protecting shell, the lower protecting shell is cylindrical and fixed at the upper end of the motor, the grooved wheel is arranged in the lower protecting shell, a through hole for extending out of a rotating shaft of the motor is formed in the center of the bottom of the lower protecting shell, and the rotating shaft of the motor passes through the through hole and is connected with the center hole of the grooved wheel in an interference fit manner.
As an improvement, the bottom of the lower protecting shell is convexly provided with a positioning column, the upper end of the motor is provided with a corresponding positioning through hole, and the lower protecting shell is fixedly connected with the motor through a screw after being positioned.
As an improvement, the locating rack is fixed on the lower protecting shell, the bottom of the locating rack is provided with a convex column which is in clearance fit with the central hole of the grooved wheel, the outer peripheral surface of the locating rack is convexly provided with a plurality of locating clamping blocks, the upper end surface of the lower protecting shell is concavely provided with corresponding clamping points, and the locating rack is arranged above the lower protecting shell through the fit of the locating clamping blocks and the clamping points.
And the middle protective shell is arranged above the positioning frame and is in involution joint with the lower protective shell, the middle protective shell is of a cylindrical structure with a side edge at one side of the upper part, a through hole for the swing rod to pass through is formed in the upper end of the middle protective shell, a second rolling bearing coaxial with the first rolling bearing on the positioning frame is arranged at the upper end of the inner cavity of the middle protective shell, and a limit sleeve is arranged between the second rolling bearing and the upper end of the swing crank.
And the upper part of the inner cavity of the middle protecting shell is provided with a stepped slot hole for the second rolling bearing and the limiting sleeve to be placed in, the limiting sleeve is sleeved at the upper end of the swing crank, and the swing rod passes through the upper protecting shell, the middle protecting shell, the second rolling bearing and the limiting sleeve and is finally inserted into the positioning hole of the swing crank to be fixed.
And the left side and the right side of the lower end of the middle protective shell are respectively provided with a positioning clamping foot in a downward protruding mode, a notch for the positioning clamping foot to penetrate is formed in the positioning frame, and a clamping hole matched and clamped with the positioning clamping foot is formed in the outer peripheral surface of the lower protective shell.
Further, the upper protective shell is arranged above the middle protective shell and is propped against the inner wall of the upper end of the shell, a round hole for the swing rod to pass through is formed in the upper protective shell, a round hole extending out of the top of the upper protective shell is formed in the upper end of the shell, a positioning jack is formed in the lower end of the toothbrush head, the upper end of the swing rod passes through the upper protective shell and is in positioning connection with the toothbrush head, and a flexible rubber sleeve is arranged between the toothbrush head and the shell.
Finally, the soft rubber sleeve is a corrugated rubber sleeve, a circular groove for clamping the bottom of the soft rubber sleeve is formed in the outer side of a circular hole in the upper end of the shell, an annular groove for sleeving the upper end of the soft rubber sleeve is formed in the outer wall of the lower end of the toothbrush head, a positioning concave part is formed in the upper side part of the swinging rod, and a corresponding positioning convex point is arranged in a positioning jack of the toothbrush head in an inward protruding mode.
Compared with the prior art, the invention has the advantages that: the toothbrush head is driven to swing left and right by a swinging rod connected with the swinging crank. The invention has the advantages of reasonable structure, high positioning precision, easy assembly, simple mechanical structure and circuit control, low production cost and good tooth brushing effect.
Drawings
FIG. 1 is a schematic view of the structure of an electric toothbrush provided by the present invention;
FIG. 2 is an exploded view of the structure of the electric toothbrush provided by the present invention;
FIG. 3 is a schematic diagram of the operation of the electric toothbrush of the present invention with the sheave driving the swing crank;
FIG. 4 is a schematic diagram of the operation of FIG. 3 in another state;
fig. 5 is a perspective view of the upper shield;
fig. 6 is a perspective view of the middle shield.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 4, an electric toothbrush comprises a shell 1, a toothbrush head 2, a motor 3 arranged in the shell 1, a swinging rod 4 and a transmission mechanism for converting the rotation of the motor 3 into reciprocating motion and transmitting the reciprocating motion to the swinging rod 4, wherein the upper end of the swinging rod 4 is connected with the toothbrush head 2, a lower protecting shell 7, a middle protecting shell 6 and an upper protecting shell 5 are sequentially arranged in the shell 1 from bottom to top, the transmission mechanism is arranged in a containing cavity between the lower protecting shell 7 and the middle protecting shell 6, the lower protecting shell 7 is cylindrical and fixed at the upper end of the motor 3, a positioning column 73 is convexly arranged at the bottom of the lower protecting shell 7, a corresponding positioning through hole 32 is formed at the upper end of the motor 3, the lower protecting shell 7 is fixedly connected with the motor 3 through a screw, and a through hole 71 for extending a rotating shaft 31 of the motor 3 is formed in the center of the bottom of the lower protecting shell 7;
the transmission mechanism comprises a grooved pulley 8, a positioning frame 9 and a swing crank 10, wherein the grooved pulley 8 is arranged in a circular concave cavity of the lower protective shell 7 and is coaxial, a rotating shaft 31 of the motor 3 passes through a through hole of the lower protective shell 7 and is in interference fit connection with a central hole 82 of the grooved pulley 8, so that the grooved pulley 8 and the rotating shaft 31 of the motor 3 can rotate at the same angular speed, an annular sliding groove 81 is concavely arranged on the upper end surface of the grooved pulley 8, the sliding groove 81 is a curved groove, namely, the distances between the middle point of the sliding groove 81 and the center of the grooved pulley 8 are different at different angular positions, and the curves of the inner wall and the outer wall of the sliding groove 81 are parallel; the positioning frame 9 is positioned and arranged above the grooved pulley 8 on the lower protecting shell 7, a convex column 94a is arranged at the bottom of the positioning frame 9 and is positioned in clearance fit with the central hole 82 of the grooved pulley 8, a plurality of positioning clamping blocks 92 are convexly arranged on the peripheral surface of the positioning frame 9, corresponding clamping points 71 are concavely arranged on the upper end surface of the lower protecting shell 7, the positioning frame 9 is precisely positioned with the lower protecting shell 7 through the matching of the positioning clamping blocks 92 and the clamping points 71, the upper end of the positioning frame 9 is convexly provided with an eccentric circular groove 91 eccentric with the grooved pulley 8, namely, the center of the eccentric circular groove 91 is deviated from the rotation center of the grooved pulley 8 by a certain distance, a first rolling bearing 11 is arranged in the eccentric circular groove 91, the lower end of the swing crank 10 is provided with a rotation center shaft 101, the rotation center shaft 101 can freely rotate on the inner hole of the first rolling bearing 11 arranged in the eccentric circular groove 91 through interference fit, the other side of the lower end of the swing crank 10 is provided with a sliding shaft 102, the lower end of the sliding shaft 102 passes through a long hole 95 of a positioning frame 9 and then is embedded in a chute 81 of a grooved pulley 8 to slide, the upper end of the swing crank 10 is provided with a positioning hole 103 for inserting the lower end of a swing rod 4, the positioning hole 103 is a round hole with a chamfered edge, the cross section of the lower end of the swing rod 4 is a round shape with a chamfered edge correspondingly, so that the two parts are prevented from rotating relatively, the swinging synchronism of the two parts is ensured, when the grooved pulley 8 rotates under the driving of a motor 3, the distance between the sliding shaft 102 of the swing crank 10 and the center of the grooved pulley 8 can be changed, and the inner wall and the outer wall of the chute 81 of the grooved pulley 8 can apply a force to the sliding shaft 102 to enable the sliding shaft 102 of the swing crank 10 to rotate back and forth clockwise and anticlockwise in the chute 81, so as to drive the swing rod 4 to swing back and forth;
the middle protecting shell 6 is in a cylindrical structure with a side edge at the upper part, the middle protecting shell 6 is arranged above the positioning frame 9 and is in butt joint with the lower protecting shell 7, positioning clamping feet 61 are respectively arranged at the left side and the right side of the lower end of the middle protecting shell 6 in a downward protruding mode, a notch 93 for the positioning clamping feet 61 to penetrate is formed in the positioning frame 9, a clamping hole 72 matched and clamped with the positioning clamping feet 61 is formed in the peripheral surface of the lower protecting shell 7, thus the middle protecting shell 6 is positioned above the lower protecting shell 7, a through hole for the swing rod 4 to penetrate is formed in the upper end of the middle protecting shell 6, the through hole is coaxial with a positioning hole 103 in the swing crank 10, a second rolling bearing 12 coaxial with a first rolling bearing 11 on the positioning frame 9 is arranged at the upper end of an inner cavity of the middle protecting shell 6, two positioning holes 62 are matched with the positioning holes 94 of the positioning frame 9 so as to ensure the coaxial precision of the first rolling bearing and the second rolling bearing 12 and the upper end of the swing crank 10, a limit sleeve 13 is arranged between the second rolling bearing 12 and the upper end of the swing crank 10, the inner cavity upper part of the middle protecting shell 6 is provided with a through hole for the swing rod 4 to penetrate, the second rolling bearing 12 and the second rolling bearing 13 is arranged at the upper end of the limit sleeve 13, and the limit sleeve is arranged at the end of the limit sleeve 13 is positioned at the end of the limit sleeve 13, and the limit sleeve is positioned at the end of the limit sleeve 13; the limiting sleeve 13 is provided with an elastic back-off 131, the swinging rod 4 is provided with a circumferential concave step 41, and when the swinging rod 4 is inserted through the limiting sleeve, the elastic back-off 131 can buckle the circumferential concave step 41 so as to axially limit the swinging rod. The upper protecting shell 5 is arranged above the middle protecting shell 6 and abuts against the inner wall of the upper end of the shell 1, the upper protecting shell 5 is provided with a positioning hole 51, and the positioning hole is matched with a positioning column 62 on the middle protecting shell 6 for positioning and then is screwed for fixing, so that the hole concentricity precision of the upper protecting shell 5 and the middle protecting shell 6 through the swinging rod 4 is ensured. The upper protective shell 5 is provided with a round hole for the swing rod 4 to pass through, the upper end of the shell 1 is provided with a round hole 1.1 extending out of the top of the upper protective shell 5, the lower end of the toothbrush head 2 is provided with a positioning jack for the upper end of the swing rod 4 to be inserted, the upper end of the swing rod 4 passes through the upper protective shell 5 to be in positioning connection with the toothbrush head 2, and a flexible rubber sleeve 14 is arranged between the toothbrush head 2 and the shell 1; the flexible glue cover 14 is a corrugated glue cover, a circular groove 1.2 for clamping the bottom of the flexible glue cover 14 is arranged outside a circular hole 1.1 at the upper end of the shell 1, an annular groove 21 for sleeving and positioning the upper end of the flexible glue cover 14 is formed on the outer wall of the lower end of the toothbrush head 2, a positioning concave part 42 is formed on the upper side part of the swinging rod 4, a corresponding positioning convex point is arranged in a positioning jack of the toothbrush head 2 in an inward protruding mode, and therefore the swinging rod 4 is in positioning connection with the toothbrush head 2 and drives the toothbrush head 2 to swing left and right for brushing teeth.
The working principle of the invention is as follows:
as shown in fig. 3 and 4, a curved sliding groove 81 is formed on the sheave 8, and the center of the sliding groove 81 and the rotation center O of the sheave 8 1 The distance between them is different in different angular positions, and the curves of the inner and outer walls of the slide groove 81 are parallel, the grooved wheel 8 is mounted on the rotating shaft 31 of the motor 3, and is powered by the motor 3 to rotate freely, and the rotating center is O 1 The swing crank 10 can freely rotate at the position with the rotation center point of O 2 A slide shaft 102 is fixed on the swing crank 10 at the position, the slide shaft 102 just embedded into the chute 81 for sliding, and the center of the slide shaft 102 is O 3 The method comprises the steps of carrying out a first treatment on the surface of the Center of rotation O of sheave 8 1 With the centre of rotation O of the oscillating crank 10 2 Is not concentric, the distance between the two points is set as a, the rotation center point O of the swing crank 10 2 To the centre O of the slide shaft 102 3 Distance is set to b, center O of slide shaft 102 3 To the centre of rotation O of the sheave 8 1 Distance of c, line O 1 O 2 And connecting line O 2 O 3 Included angle beta, c according to the cosine law 2 ＝a 2 +b 2 -2 abcsβ, so that when the constant values of a, b are unchangedWhen c and angle β have a correspondence, i.e. when c varies, angle β also varies.
When the sheave 8 is in the position of fig. 3, the value of c is the largest, and the sheave 81 continues to rotate clockwise, the value of c is gradually smaller, the outer wall of the sliding groove 81 applies an F1 force to the sliding shaft 102 to drive the swing crank 10 to rotate clockwise, and the angle β is reduced; when the sheave 8 moves to the position of fig. 4, the value of c is the smallest, and when the sheave 81 continues to rotate clockwise, the value of c gradually becomes larger, the inner wall of the sliding groove 81 applies an F2 force to the sliding shaft 102 to cause the swing crank 10 to rotate anticlockwise, and the angle β increases;
when the sheave 8 rotates, the value of c changes from maximum to minimum to maximum, and one change period of the value of c is the swing period of the swing crank 10, so if the sheave 8 rotates once, there are n change periods of the value of c, the swing crank 10 has n swing periods, that is, the rotation speed of the sheave 8 is r times/time sharing, the swing speed of the swing crank 10 has n×r times/minute, and n in the patent of the invention does not set a specific value and can be 2, 3, 4.
Claims (10)
1. The utility model provides an electric toothbrush, includes shell and toothbrush head, installs motor and swinging arms in the shell, and the upper end of swinging arms is connected its characterized in that with the toothbrush head: the shell is internally provided with a transmission mechanism which converts the rotation of the motor into reciprocating motion and transmits the reciprocating motion to the swinging rod, and the transmission mechanism comprises:
the grooved pulley is arranged above the motor and can rotate along with the motor, an annular chute is concavely arranged on the upper end surface of the grooved pulley, and the chute is a curved chute;
the positioning frame is positioned above the grooved pulley, and the upper end of the positioning frame is convexly provided with an eccentric circular groove eccentric with the grooved pulley;
the lower end of the swing crank is provided with a rotating central shaft, the rotating central shaft is rotatably arranged on the eccentric circular groove, the other side of the lower end of the swing crank is provided with a sliding shaft, the lower end of the sliding shaft penetrates through the positioning frame to be embedded in the chute of the grooved pulley to slide, the upper end of the swing crank is provided with a positioning hole for inserting the lower end of the swing rod, and when the grooved pulley rotates, the swing crank rotates clockwise and anticlockwise back and forth through the action of the inner wall and the outer wall of the chute on the sliding shaft, so that the left-right reciprocating swing of the swing rod is realized.
2. The electric toothbrush of claim 1, wherein: the eccentric circular groove is internally provided with a first rolling bearing, and the rotating central shaft is arranged on an inner hole of the first rolling bearing of the eccentric circular groove through interference fit.
3. The electric toothbrush of claim 2, wherein: the shell is internally provided with a lower protecting shell, a middle protecting shell and an upper protecting shell, the transmission mechanism is arranged between the lower protecting shell and the middle protecting shell, the lower protecting shell is cylindrical and fixed at the upper end of the motor, the grooved wheel is arranged in the lower protecting shell, the center position of the bottom of the lower protecting shell is provided with a through hole for the rotating shaft of the motor to extend out, and the rotating shaft of the motor passes through the through hole and is connected with the center hole of the grooved wheel in an interference fit manner.
4. The electric toothbrush of claim 3, wherein: the bottom of the lower protecting shell is convexly provided with a positioning column, the upper end of the motor is provided with a corresponding positioning through hole, and the lower protecting shell is fixedly connected with the motor through a screw after being positioned.
5. The electric toothbrush of claim 3, wherein: the locating rack is fixed on the lower protective case, and the bottom of locating rack is equipped with a projection and the centre bore clearance fit location of sheave, and the outer peripheral face of locating rack epirelief is equipped with a plurality of location fixture blocks, and the up end of lower protective case is concave to be equipped with corresponding screens point, and the locating rack passes through the cooperation setting of location fixture block and screens point in lower protective case top.
6. The electric toothbrush of claim 5, wherein: the middle protective shell is arranged above the positioning frame and is in involution joint with the lower protective shell, the middle protective shell is of a cylindrical structure with a side edge on one side of the upper part, a through hole for the swing rod to pass through is formed in the upper end of the middle protective shell, a second rolling bearing coaxial with the first rolling bearing on the positioning frame is arranged at the upper end of an inner cavity of the middle protective shell, and a limit sleeve is arranged between the second rolling bearing and the upper end of the swing crank.
7. The electric toothbrush of claim 6, wherein: the upper part of the inner cavity of the middle protecting shell is provided with a stepped slot hole for the placement of a second rolling bearing and a limiting sleeve, the limiting sleeve is sleeved at the upper end of the swing crank, and the swing rod passes through the upper protecting shell, the middle protecting shell, the second rolling bearing and the limiting sleeve and is finally inserted into a positioning hole of the swing crank to be fixed.
8. The electric toothbrush of claim 7, wherein: the left side and the right side of the lower end of the middle protective shell are respectively provided with a positioning clamping foot in a downward protruding mode, a notch for the positioning clamping foot to penetrate is formed in the positioning frame, and a clamping hole matched and clamped with the positioning clamping foot is formed in the outer peripheral surface of the lower protective shell.
9. The electric toothbrush according to any one of claims 3 to 8, wherein: the upper protective shell is arranged above the middle protective shell and abuts against the inner wall of the upper end of the shell, a round hole for the swing rod to penetrate is formed in the upper protective shell, a round hole extending out of the top of the upper protective shell is formed in the upper end of the shell, a positioning jack is formed in the lower end of the toothbrush head, the upper end of the swing rod penetrates through the upper protective shell and is in positioning connection with the toothbrush head, and a soft rubber sleeve is arranged between the toothbrush head and the shell.
10. The electric toothbrush of claim 9, wherein: the utility model discloses a toothbrush, including the upper end circular hole of shell, the upper end circular hole outside of shell is equipped with the circular recess that supplies the bottom card income of flexible gum cover, and the shaping has the annular groove that supplies the upper end cover setting location of flexible gum cover on the lower extreme outer wall of toothbrush head, and the shaping of the upper side portion of swinging arms has the location concave part, and the location jack of toothbrush head inwards protruding is equipped with corresponding location bump.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018101162567 | 2018-02-06 | ||
| CN201810116256 | 2018-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108720953A CN108720953A (en) | 2018-11-02 |
| CN108720953B true CN108720953B (en) | 2023-12-29 |
Family
ID=63939411
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810397292.5A Active CN108720953B (en) | 2018-02-06 | 2018-04-28 | Electric toothbrush |
| CN201820626050.4U Withdrawn - After Issue CN208892816U (en) | 2018-02-06 | 2018-04-28 | A kind of electric toothbrush |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820626050.4U Withdrawn - After Issue CN208892816U (en) | 2018-02-06 | 2018-04-28 | A kind of electric toothbrush |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108720953B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108720953B (en) * | 2018-02-06 | 2023-12-29 | 宁波真和电器股份有限公司 | Electric toothbrush |
| CN111110379A (en) * | 2018-12-17 | 2020-05-08 | 深圳市大匠凯科技有限公司 | Vertical brushing electric toothbrush |
| CN111449788B (en) * | 2020-04-09 | 2021-08-24 | 江西旺来科技有限公司 | Oral cavity deep cleaner for protecting gum |
| JP7354932B2 (en) * | 2020-06-08 | 2023-10-03 | 株式会社村田製作所 | Oral jig |
| CN112773543A (en) * | 2021-03-02 | 2021-05-11 | 雷德贵 | Electric toothbrush head and electric toothbrush |
| CN118199322A (en) * | 2024-05-16 | 2024-06-14 | 克瑞科技(东莞)有限公司 | Driving motor with multiple output directions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09173360A (en) * | 1995-12-25 | 1997-07-08 | Matsushita Electric Works Ltd | Motor-driven toothbrush |
| KR101015381B1 (en) * | 2010-08-27 | 2011-02-22 | 정은긴 | An electric toothbrush |
| CN204814254U (en) * | 2015-06-10 | 2015-12-02 | 宁波澳乐比口腔护理用品有限公司 | Electric toothbrush |
| CN208892816U (en) * | 2018-02-06 | 2019-05-24 | 宁波真和电器股份有限公司 | A kind of electric toothbrush |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6721986B2 (en) * | 2001-06-28 | 2004-04-20 | Qingping Zhuan | Electric toothbrush |
| EP1905382A1 (en) * | 2006-09-29 | 2008-04-02 | Trisa Holding AG | Electric toothbrush and transmission for an electric toothbrush |
| US8522382B2 (en) * | 2011-04-21 | 2013-09-03 | Soo Woong LEE | Bi-planar electric toothbrush |
-
2018
- 2018-04-28 CN CN201810397292.5A patent/CN108720953B/en active Active
- 2018-04-28 CN CN201820626050.4U patent/CN208892816U/en not_active Withdrawn - After Issue
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09173360A (en) * | 1995-12-25 | 1997-07-08 | Matsushita Electric Works Ltd | Motor-driven toothbrush |
| KR101015381B1 (en) * | 2010-08-27 | 2011-02-22 | 정은긴 | An electric toothbrush |
| CN204814254U (en) * | 2015-06-10 | 2015-12-02 | 宁波澳乐比口腔护理用品有限公司 | Electric toothbrush |
| CN208892816U (en) * | 2018-02-06 | 2019-05-24 | 宁波真和电器股份有限公司 | A kind of electric toothbrush |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108720953A (en) | 2018-11-02 |
| CN208892816U (en) | 2019-05-24 |
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