CN209884400U - Electric toothbrush - Google Patents
Electric toothbrush Download PDFInfo
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- CN209884400U CN209884400U CN201920451006.9U CN201920451006U CN209884400U CN 209884400 U CN209884400 U CN 209884400U CN 201920451006 U CN201920451006 U CN 201920451006U CN 209884400 U CN209884400 U CN 209884400U
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- brush head
- electric toothbrush
- brush
- coupling assembling
- assembly
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Abstract
The utility model discloses an electric toothbrush, including brush head subassembly, brush holder subassembly, drive part and brush head coupling assembling, drive part sets up in brush holder subassembly, but the brush head coupling assembling cover is established on drive part's output shaft, brush head subassembly is equipped with the connection chamber that is used for holding brush head coupling assembling, evenly seted up at least three opening on brush head coupling assembling's the lateral wall, be provided with the buckle piece in the opening respectively, the top of buckle piece is connected with brush head coupling assembling's lateral wall, the end of buckle piece can move in the opening, be provided with outstanding spacing portion on buckle piece terminal inner wall; the cross sections of at least three clamping sheets are in the same annular area. Compared with the prior art, the utility model discloses a buckle piece of equipartition makes brush head coupling assembling more firm with driver part's connection, and the atress of every buckle piece of equipartition is even to make electric toothbrush's connection firm, the vibration sense transmission and clean effect better, and can effectively reduce vibration noise.
Description
Technical Field
The utility model relates to an oral care technical field, concretely relates to electric toothbrush.
Background
With the continuous improvement of modern living standard, people pay more and more attention to oral health and nursing, so that the rapid development of the electric toothbrush industry is promoted in recent years, and the electric toothbrush is a special nursing appliance for cleaning the oral cavity and can play a role in cleaning the oral cavity and nursing the gum. The existing electric toothbrush has the general structure as follows: including toothbrush head and toothbrush handle, the inside of toothbrush handle is equipped with the motor, and the output shaft protrusion of motor is connected with the toothbrush head in toothbrush handle, sets up a connecting piece between toothbrush head and the output shaft, and the connecting piece cover is established on the output shaft to with toothbrush head fixed connection with this connection toothbrush head and toothbrush handle, after the motor starts, the output shaft of motor drives the toothbrush head and rotates and produce vibrations. In the using process, the connection between the connecting piece and the motor is easy to loosen, so that the toothbrush head and the toothbrush handle generate vibration noise or the vibration is not obvious. The appearance and performance requirements of consumers for products are higher and higher, and the common electric toothbrush structure cannot meet the performance requirements of the consumers for the products.
Therefore, the structure of the existing electric toothbrush needs to be further optimized, and the connection stability between the toothbrush head and the toothbrush handle is improved, so that the performance requirements of consumers on the electric toothbrush are met.
SUMMERY OF THE UTILITY MODEL
The invention aims to overcome the defects of the prior art and provides an electric toothbrush, which effectively improves the connection stability of a brush head component and a brush handle component through structural improvement.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the electric toothbrush comprises a brush head assembly, a brush handle assembly, a driving part and a brush head connecting assembly, wherein the driving part is arranged in the brush handle assembly, the brush head connecting assembly can be sleeved on an output shaft of the driving part, the brush head assembly is provided with a connecting cavity for accommodating the brush head connecting assembly, at least three openings are uniformly formed in the side wall of the brush head connecting assembly, buckling pieces are respectively arranged in the openings, the top ends of the buckling pieces are connected with the side wall of the brush head connecting assembly, the tail ends of the buckling pieces can move in the openings, and the inner walls of the tail ends of the buckling pieces are provided with protruding limiting parts; the cross sections of the at least three clamping pieces are in the same annular area; when the output shaft is inserted into the jack arranged in the brush head connecting component, the limiting parts on the at least three buckling pieces are all clamped on the clamping groove of the output shaft.
Compared with the prior art, the utility model discloses a buckle piece of equipartition makes brush head coupling assembling more firm with driver part's connection, and the atress of every buckle piece of equipartition is even to make electric toothbrush's connection firm, the vibration sense transmission and clean effect better, and can effectively reduce vibration noise. In particular, the annular region is not a solid region but a dummy region, preferably a dummy region formed by connecting edges of the respective engaging pieces.
Preferably, the inner side wall and the outer side wall of at least three buckling pieces are cambered surfaces; the center lines of the at least three clamping pieces in the longitudinal direction are intersected at one point. The side wall of each clamping piece is set to be the cambered surface, so that the clamping pieces can form the annular area together, and the force application directions of the clamping pieces are concentrated on the output shaft to clamp the output shaft.
Preferably, at least three buckle pieces are circumferentially and uniformly distributed on the lower side of the brush head connecting assembly and extend into the jack. The clamping buckle piece is arranged at the lower side of the brush head connecting component, so that the connection between the clamping buckle piece and the output shaft is firmer.
Preferably, the brush head connecting assembly sequentially comprises a first connecting portion, a second connecting portion and a third connecting portion from top to bottom, the jack penetrates through the second connecting portion and the third connecting portion, and the buckling piece is arranged on the third connecting portion. The downside of brushing first coupling assembling is located to the buckle piece of this scheme, is favorable to buckle piece and drive part's output shaft's steadiness.
Preferably, the bottom of third connecting portion is equipped with the connection step, connects the step and is connected the open shape looks adaptation in chamber in order to be used for sealing and connect the chamber, can make brush holder subassembly and brush head subassembly be connected inseparabler, can prevent that water from connecting the chamber through the infiltration of the connection gap of brush holder subassembly and brush head subassembly.
Preferably, the buckle piece is the elasticity fixture block, makes buckle piece and drive assembly realize elastic connection through this scheme, is favorable to the convenience of electric toothbrush assembly.
Preferably, the buckling piece and the brush head connecting assembly are of an integrated structure, so that the buckling piece and the brush head connecting assembly can be integrally prepared, and the cost can be saved; on the other hand, the integrated structure can ensure firm connection of the connection part of the two, and avoids fracture caused by repeated bending.
Preferably, still include first location arch, first location arch sets up on the lateral wall of third connecting portion, and the downside of connecting the chamber is equipped with the location step with first location arch looks adaptation. This scheme is protruding to cooperate with the location step through first location, and the first subassembly of restriction brush and the relative longitudinal displacement of brush head coupling assembling to this prevents to brush head coupling assembling and brush head subassembly and breaks away from mutually.
Preferably, the side wall of the second connecting part is provided with a first limiting bulge, the connecting cavity is internally provided with a limiting groove, and the first limiting bulge is in sliding fit with the limiting groove. This scheme cooperatees through first spacing arch and spacing groove, and the first subassembly of restriction brush and the relative ground circumference of brush head coupling assembling rotate, make brush head subassembly and brush head coupling assembling realize synchronous rotation.
Preferably, the first connecting portion is a cross-shaped transmission shaft, the transmission shaft is connected with the inner wall of the upper side of the connecting cavity, and the side wall of the transmission shaft, which is used for being connected with the connecting cavity, is provided with an arc-shaped connecting protrusion. This scheme makes the transmission shaft inseparabler with being connected between the chamber through setting up the arch and connecting the arch to this transmission performance who improves brush head coupling assembling.
Preferably, the output shaft comprises a connecting part at the top, a clamping groove and a transition part positioned between the connecting part and the clamping groove, the transition part comprises an inclined side wall, and the thickness of the adjacent part of the transition part and the connecting part is smaller than that of the adjacent part of the transition part and the clamping groove; the shape of the jack is matched with that of the output shaft. This scheme can prevent to produce relative slip between the inner wall of connecting portion and jack.
Drawings
FIG. 1 is an exploded view of a power toothbrush;
FIG. 2 is an exploded view of the brushhead attachment assembly, the brushhead assembly;
FIG. 3 is an assembly view of the brushhead attachment assembly, brushhead assembly;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a cross-sectional view B-B of FIG. 3;
FIG. 7 is a schematic structural view of a brushhead attachment assembly;
figure 8 is a cross-sectional view of the brushhead attachment assembly.
Description of reference numerals:
the toothbrush comprises an electric toothbrush 1, a toothbrush head assembly 2, a connecting cavity 21, a toothbrush head connecting assembly 3, a first connecting portion 31, a second connecting portion 32, a third connecting portion 33, an arc-shaped connecting protrusion 311, a jack 34, a buckling piece 35, a limiting portion 352, an opening 351, a first positioning protrusion 331, a connecting step 332, a positioning step 211, a first limiting protrusion 321, a limiting groove 214, a toothbrush handle assembly 4, an output shaft 51 of a driving part, a connecting portion 511 at the top, a transition portion 513, a clamping groove 512 and an inclined side wall 5131.
Detailed Description
The technical scheme of the utility model is further explained according to the attached drawings as follows:
referring to fig. 1-8, the electric toothbrush 1 of the present invention includes a brush head assembly 2, a brush handle assembly 4, a driving part and a brush head connecting assembly 3, the driving part is disposed in the brush handle assembly 4, the brush head connecting assembly 3 can be sleeved on an output shaft 51 of the driving part, the brush head assembly 2 is provided with a connecting cavity 21 for accommodating the brush head connecting assembly 3, at least three openings 351 are uniformly disposed on a side wall of the brush head connecting assembly 3, buckling pieces 35 are respectively disposed in the openings 351, top ends of the buckling pieces 35 are connected with the side wall of the brush head connecting assembly 3, ends of the buckling pieces 35 can move in the openings 351, and a protruding limiting portion 352 is disposed on an inner wall of the end of the buckling pieces 35; the cross sections of the at least three clamping buckle pieces 35 are in the same annular area; when the output shaft 51 is inserted into the insertion hole 34 formed in the brush head connecting assembly 3, the limiting portions 352 of the at least three buckling pieces 35 are all buckled on the buckling groove 512 of the output shaft 51.
In order to form the annular region, the inner side wall and the outer side wall of at least three buckling pieces 35 are cambered surfaces; the center lines of at least three locking pieces 35 in the longitudinal direction intersect at one point so that the urging direction of each locking piece 35 is concentrated on the output shaft 51. Still further, at least three buckle pieces 35 are circumferentially and uniformly distributed on the lower side of the brush head connecting assembly 3 and extend into the insertion hole 34. The arrangement of the latch 35 under the brushhead attachment assembly 3 makes the connection between the latch 35 and the output shaft 51 more secure. The buckle piece 35 is an elastic clamping block, and the buckle piece 35 is elastically connected with the driving part through the scheme, so that convenience in assembling the electric toothbrush 1 is facilitated.
Further, in order to make the fastening piece 35 more stably connected to the output shaft 51 of the driving member, the brush head connecting assembly 3 sequentially includes, from top to bottom, a first connecting portion 31, a second connecting portion 32, and a third connecting portion 33, the insertion hole 34 penetrates through the second connecting portion 32 and the third connecting portion 33, and the fastening piece 35 is disposed on the third connecting portion 33. The downside of brush head coupling assembling 3 is located to the buckle piece 35 of this scheme, is favorable to the steadiness that buckle piece 35 and drive component's output shaft 51 are connected.
The bottom of the third connecting portion 33 is provided with a connecting step 332, the connecting step 332 is matched with the opening 351 of the connecting cavity 21 in shape so as to be used for sealing the connecting cavity 21, so that the connection between the brush holder assembly 4 and the brush head assembly 2 can be more compact, and water can be prevented from permeating into the connecting cavity 21 through the connecting gap between the brush holder assembly 4 and the brush head assembly 2.
Preferably, the connecting device further comprises a first positioning protrusion 331, the first positioning protrusion 331 is disposed on a side wall of the third connecting portion 33, and a positioning step 211 matched with the first positioning protrusion 331 is disposed on a lower side of the connecting cavity 21. This scheme is through first location arch 331 and location step 211 cooperation, and the restriction is brushed first subassembly 2 and is brushed first coupling assembling 3 relative longitudinal displacement to this prevents to brush first coupling assembling 3 and brush first subassembly 2 and breaks away from mutually.
In order to fix the brush head connecting assembly 3 and the brush head assembly 2, a first limiting protrusion 321 is arranged on the side wall of the second connecting portion 32, a limiting groove 214 is arranged in the connecting cavity 21, and the first limiting protrusion 321 is in sliding fit with the limiting groove 214. This scheme cooperatees through first spacing arch 321 and spacing groove 214, and the first subassembly 2 of brush is brushed to the restriction and brush first coupling assembling 3 ground circumferential direction relatively, makes brush first subassembly 2 and brush first coupling assembling 3 realize synchronous rotation.
The first connecting portion 31 is a cross-shaped transmission shaft, the transmission shaft is connected to the upper inner wall of the connecting cavity 21, and an arc-shaped connecting protrusion 311 is disposed on the side wall of the transmission shaft, which is used for being connected to the connecting cavity 21. The scheme makes the connection between the transmission shaft and the connection cavity 21 more tight by arranging the arc-shaped connection protrusion 311, so that the transmission performance of the brush head connection assembly 3 is improved.
In order to make the connection between the brushhead connecting assembly 3 and the driving member more stable, the output shaft 51 comprises a connecting portion 511 at the top, a clamping groove 512 and a transition portion 513 between the connecting portion 511 and the clamping groove 512, the transition portion 513 comprises an inclined side wall 5131, and the thickness of the transition portion 513 adjacent to the connecting portion 511 is smaller than that of the transition portion 513 adjacent to the clamping groove 512; the shape of the insertion hole 34 is matched with the shape of the output shaft 51, and as can be seen from fig. 5, when the output shaft 51 is inserted into the insertion hole 34, the limiting portion 352 is lifted upwards along the inclined side wall 5131 until being clamped into the clamping groove 512, which can ensure that the clamping piece 35 does not move slowly when being lifted, and is not suddenly deformed and easily damaged. Preferably, the cross-section of the receptacle 34 is semi-circular. This arrangement prevents the relative sliding between the connection portion 511 and the inner wall of the insertion hole 34.
Compared with the prior art, the utility model discloses a buckle piece 35 of equipartition makes brush head coupling assembling 3 more firm with driver part's connection, and every buckle piece 35 of equipartition atress is even to make electric toothbrush 1 connect firm, the vibration sense transmission is better with clean effect, and can effectively reduce vibration noise.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides an electric toothbrush, includes first subassembly of brush, brush holder subassembly, driver part and first coupling assembling of brush, driver part sets up in the brush holder subassembly, but first coupling assembling of brush cover is established on driver part's the output shaft, first subassembly of brush is equipped with and is used for holding first coupling assembling's connection chamber, its characterized in that: the brush head connecting assembly comprises a brush head connecting assembly, a brush head connecting assembly and a brush head connecting assembly, wherein the side wall of the brush head connecting assembly is uniformly provided with at least three openings, the openings are internally provided with buckling pieces respectively, the top ends of the buckling pieces are connected with the side wall of the brush head connecting assembly, the tail ends of the buckling pieces can move in the openings, and the inner walls of the tail ends of the buckling pieces are provided with protruding limiting parts; the cross sections of at least three buckling pieces are in the same annular area; when the output shaft is inserted into the jack arranged in the brush head connecting assembly, the limiting parts on the at least three buckling pieces are clamped on the clamping grooves of the output shaft.
2. The electric toothbrush of claim 1, wherein: the inner side wall and the outer side wall of at least three buckling pieces are cambered surfaces;
the center lines of at least three buckling pieces in the longitudinal direction are intersected at one point.
3. The electric toothbrush of claim 1, wherein: at least three buckle pieces are circumferentially and uniformly distributed on the lower side of the brush head connecting assembly and extend into the jack.
4. The electric toothbrush of claim 3, wherein: the brush head connecting assembly sequentially comprises a first connecting portion, a second connecting portion and a third connecting portion from top to bottom, the jack penetrates through the second connecting portion and the third connecting portion, and the buckling piece is arranged on the third connecting portion.
5. The electric toothbrush of claim 4, wherein: the bottom of the third connecting part is provided with a connecting step, and the connecting step is matched with the opening of the connecting cavity in shape.
6. The electric toothbrush of claim 3, wherein: the clamping piece is an elastic clamping block; and/or the buckling piece and the brush head connecting component are of an integrated structure.
7. The electric toothbrush of claim 4, wherein: still include first location arch, first location arch sets up on the lateral wall of third connecting portion, the downside of connecting the chamber be equipped with the protruding looks adaptation's of first location step.
8. The electric toothbrush of claim 4, wherein: the side wall of the second connecting part is provided with a first limiting bulge, the connecting cavity is internally provided with a limiting groove, and the first limiting bulge is in sliding fit with the limiting groove.
9. The electric toothbrush of claim 4, wherein: the first connecting portion is a cross-shaped transmission shaft, the transmission shaft is connected with the inner wall of the upper side of the connecting cavity, and arc-shaped connecting protrusions are arranged on the side wall, connected with the connecting cavity, of the transmission shaft.
10. The electric toothbrush according to any one of claims 1 to 9, wherein: the output shaft comprises a connecting part at the top, the clamping groove and a transition part positioned between the connecting part and the clamping groove, the transition part comprises an inclined side wall, and the thickness of the adjacent part of the transition part and the connecting part is smaller than that of the adjacent part of the transition part and the clamping groove;
the shape of the jack is matched with that of the output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451006.9U CN209884400U (en) | 2019-04-03 | 2019-04-03 | Electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451006.9U CN209884400U (en) | 2019-04-03 | 2019-04-03 | Electric toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209884400U true CN209884400U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920451006.9U Active CN209884400U (en) | 2019-04-03 | 2019-04-03 | Electric toothbrush |
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| Country | Link |
|---|---|
| CN (1) | CN209884400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520650A (en) * | 2021-06-18 | 2021-10-22 | 深圳素士科技股份有限公司 | Brush first subassembly and oral care device |
-
2019
- 2019-04-03 CN CN201920451006.9U patent/CN209884400U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520650A (en) * | 2021-06-18 | 2021-10-22 | 深圳素士科技股份有限公司 | Brush first subassembly and oral care device |
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