WO2022028613A1

WO2022028613A1 - Electric toothbrush head and electric toothbrush

Info

Publication number: WO2022028613A1
Application number: PCT/CN2021/111352
Authority: WO
Inventors: 匡娟云
Original assignee: 匡娟云
Priority date: 2020-08-07
Filing date: 2021-08-06
Publication date: 2022-02-10

Abstract

An electric toothbrush head (100), which is detachably attached to a handle (200) of an electric toothbrush (300). The handle (200) comprises a driving shaft (250) which can vibrate, the driving shaft (250) extending from the handle (200). The electric toothbrush head (100) comprises a brush head body (10) and a clamping assembly (20), the clamping assembly (20) being arranged in the brush head body (10), and the clamping assembly (20) comprising a body (30) and an elastic member (40). The interior of the body (30) is provided with a first accommodating cavity (31) in a first direction (X'), the first accommodating cavity (31) being used for accommodating at least part of the driving shaft (250). The elastic member (40) is arranged on the body (30), and the elastic member (40) extends in the first direction (X') and abuts against at least part of the driving shaft (250) in a direction (Y') which is perpendicular to the first direction (X'), the first direction (X') being a length direction of the driving shaft (250) after the driving shaft (250) is installed in the brush head body (10).

Description

Electric toothbrush head and electric toothbrush

This application is required to be submitted to the China Patent Office on August 7, 2020, the application number is 202021631331.2, and the invention name is "electric toothbrush brush head and electric toothbrush" Chinese patent application, submitted to China Patent Office on April 16, 2021, application The Chinese patent application with the number of 202120794447.6 and the invention name is "electric toothbrush head and electric toothbrush", submitted to the China Patent Office on April 16, 2021, the application number is 202120796162.6, and the invention name is "electric toothbrush head and electric toothbrush" The Chinese patent application filed by the Chinese Patent Office on April 16, 2021 with the application number of 202120794448.0 and the invention titled "Electric Toothbrush Head and Electric Toothbrush" and filed with the Chinese Patent Office on July 13, 2021 , the application number is 202121593110.5, and the priority of the Chinese patent application entitled "electric toothbrush brush head and electric toothbrush", the entire content of which is incorporated in this application by reference.

technical field

The present application relates to the technical field of electric toothbrushes, and in particular, to an electric toothbrush head and an electric toothbrush having the electric toothbrush head.

Background technique

With the improvement of living standards, people pay more and more attention to the health of teeth, and the application of electric toothbrushes is becoming more and more extensive.

Currently, there are usually two types of electric toothbrushes on the market, one is an electric toothbrush in which the bristles are driven to rotate and vibrate by a motor, and the other is an ultrasonic electric toothbrush which causes the brush head to vibrate at high frequency. These two types of electric toothbrushes usually make the bristles vibrate to achieve the purpose of cleaning teeth. The brush head is detachably mounted on the handle of the electric toothbrush. The drive shaft of the handle cooperates with the brush head to drive the brush head to vibrate. Therefore, it is necessary to design a structure to transmit the vibration from the drive rod to the brush head.

SUMMARY OF THE INVENTION

The present application is made in view of the above problems, and provides an electric toothbrush head and an electric toothbrush in which a brush handle and an electric toothbrush head are fixedly connected with a simple structure.

In order to solve the above problems, one aspect of the present application provides an electric toothbrush brush head, which is detachably attached to the handle of the electric toothbrush, the handle includes a vibrating drive shaft, and the drive shaft extends from the handle, The electric toothbrush brush head includes a brush head body and an engaging component, the engaging component is disposed in the brush head body, the engaging component includes a main body and an elastic member, and the interior of the main body is opened along the first direction There is a first accommodating cavity, the first accommodating cavity is used for accommodating at least a part of the drive shaft, the elastic piece is arranged on the main body, and the elastic piece extends along the first direction and along the The first direction is perpendicular to at least a part of the drive shaft, and the first direction is the length direction of the drive shaft after the drive shaft is installed in the brush head body.

In order to solve the above technical problems, another embodiment of the present application provides an electric toothbrush, the electric toothbrush includes the electric toothbrush head and the handle described above, and the electric toothbrush head is detachably attached to the handle superior.

In some embodiments, an accommodating portion is defined on the outer surface of the brush head body, and the accommodating portion is used for accommodating at least a part of the engaging component.

In some embodiments, the main body is accommodated in the accommodating portion, and the main body further defines a second accommodating cavity along the first direction, and the second accommodating cavity is used for accommodating the elastic member.

In some embodiments, at least one side surface of the main body is provided with an insertion opening, so that the elastic member can be inserted into the second receiving cavity along a third direction, the third direction being the same as the first direction and the second direction are both vertical directions.

In some embodiments, an abutting wall is disposed between the first accommodating cavity and the second accommodating cavity, and the elastic member abuts the abutting wall, so that the abutting wall is in the The elastic member abuts against at least a part of the drive shaft under the elastic action of the elastic member.

In some embodiments, the body and the brush head body are integrally formed.

In some embodiments, the main body includes a cavity wall and an abutting wall for forming the first receiving cavity, at least a part of the elastic member abuts the abutting wall, and the brush head of the electric toothbrush is in contact with the abutting wall. In the assembled state, the abutment wall abuts against at least a part of the drive shaft under the action of the elastic force of the elastic member.

In some embodiments, both sides of the abutting wall are connected to the cavity wall through an isolation layer, and the thickness of the isolation layer is smaller than that of the abutting wall.

In some embodiments, the thickness of the isolation layer is in the range of 0.05-2.0 mm, and the thickness of the abutment wall is in the range of 0.1-2.0 mm.

In some embodiments, the abutting wall includes a first wall surface, the first wall surface is a surface of the abutting wall facing the first receiving cavity, the first wall surface is protruded with a convex portion, the The convex portion is used to abut against the drive shaft.

In some embodiments, the abutting wall further includes a second wall surface facing away from the first wall surface, the second wall surface is a surface of the abutting wall facing away from the first receiving cavity, the first wall surface is The two wall surfaces are concavely provided with a concave portion, at least a part of the elastic member is in contact with the concave portion, and the position of the convex portion corresponds to the position of the concave portion.

In some embodiments, the drive shaft includes a first metal portion, the first metal portion has a pattern, and the protruding portion abuts against the pattern.

In some embodiments, the main body includes a cavity wall for forming the first receiving cavity, the cavity wall is provided with an opening, the opening allows at least a part of the elastic member to pass through, so that the The elastic member abuts at least a portion of the drive shaft.

In some embodiments, the elastic member is a metal member, and a thin film is formed on the surface of the metal member.

In some embodiments, the elastic member is in the shape of an arcuate sheet, the elastic member includes a first contact part, two first elastic parts and two first fastening parts, the two first elastic parts are respectively are located at both ends of the first contact portion, the two first fastening portions are respectively located at one end of the first elastic portion away from the first contact portion, and the first contact portion is connected to the first elastic portion The part is arc-shaped.

In some embodiments, the first contact portion and the first elastic portion are recessed in an opposite direction.

In some embodiments, the radius R1 of the circle where the first contact portion is located is 2-10 mm, and the corresponding central angle range is 38-48 degrees; the radius R2 of the circle where the first elastic portion is located is 3-10 mm, so The corresponding central angle range is 15-30 degrees.

In some embodiments, the elastic member includes a third contact portion and two third fastening portions, the two third fastening portions are respectively located on two sides of the third contact portion, and the third contact portion At least a portion of the portion is arcuate to abut at least a portion of the drive shaft.

In some embodiments, at least one rib is protruded from the surface of each of the third fastening portions, and the protruding direction of the rib is consistent with the protruding direction of the curved portion in the shape of an arch.

In some embodiments, the snap-fit assembly further includes a snap-fit cover, and the snap-fit cover fixes the elastic member or the main body in the accommodating portion.

In some embodiments, the snap cover is fixedly connected to the brush head body through a snap structure or ultrasonic welding technology.

In some embodiments, the accommodating portion includes two oppositely disposed first inner walls, the snap cover includes two oppositely disposed first side walls extending along the longitudinal direction thereof, the first One of the inner wall and the first side wall is protruded with an engaging portion along the first direction, the other is provided with an engaging groove along the first direction, and the engaging portion is engaged with the engaging portion in the slot.

In some embodiments, the length of the engaging groove is in the range of 5-13 mm, and the width is in the range of 0.2-3.5 mm.

In some embodiments, the accommodating portion further includes a second inner wall and a third inner wall arranged oppositely, the snap cover further includes a second sidewall and a third sidewall arranged oppositely, and the second sidewall The outer surface of the third side wall is arranged towards the second inner wall, the outer surface of the third side wall is arranged towards the third inner wall, and the second inner wall and the third inner wall are arranged along the second direction and approaching each other. The second side wall is inclined correspondingly to the second inner wall, and the third side wall is inclined correspondingly to the third inner wall.

In some embodiments, the two first inner walls of the accommodating portion are inclined along the second direction and approaching each other, and the first side walls and the first inner walls are correspondingly inclined set up.

In some embodiments, a hollow cavity is defined inside the main body of the brush head along a first direction, and the hollow cavity communicates with the first accommodating cavity to accommodate the drive shaft.

In some embodiments, the hollow cavity includes a first hollow cavity and a second hollow cavity, and the first receiving cavity and the second hollow cavity are respectively located at two ends of the first hollow cavity and the first cavity and the second cavity are respectively accommodating the second metal part and the fixing part of the handle.

In some embodiments, the second metal portion is not in contact with the wall of the first cavity, and the second metal portion is not in contact with the wall of the second cavity.

An embodiment of the present invention also provides an electric toothbrush brush head, which is detachably attached to a handle of an electric toothbrush, the handle includes a vibrating drive shaft, the drive shaft extends from the handle, the The brush head of the electric toothbrush includes a brush head body and an engaging component, the engaging component is arranged in the brush head body, the drive shaft can extend into the engaging component, and drives the engaging component through the engaging component The main body of the brush head vibrates, the engaging component includes a main body and an elastic piece, the elastic piece is an independent element disposed on the main body, and the elastic piece directly abuts the drive shaft.

In some embodiments, the drive shaft is a three-dimensional structure, and the elastic member is located on one side of the drive shaft as a whole and is disposed along the length direction of the brush head body, and the length direction is connected to the insertion position of the drive shaft. The direction of the main body is parallel.

In some embodiments, the main body has a first accommodating cavity opened along a first direction for accommodating the drive shaft, the main body further includes a cavity wall forming the first accommodating cavity, and the cavity wall is on the cavity wall. An opening is provided, and at least a part of the elastic member passes through the opening.

In some embodiments, the elastic member includes a portion passing through the opening and abutting against the drive shaft.

In some embodiments, the electric toothbrush head is provided with a second accommodating cavity, the second accommodating cavity is used for accommodating the elastic member, and the first accommodating cavity and the second accommodating cavity are in the second direction The upper parts are at least partially overlapped, the first accommodating cavity and the second accommodating cavity are communicated through the opening, and the second direction is along the direction from the second accommodating cavity to the first accommodating cavity.

In some embodiments, an insertion opening is provided on one side of the second receiving cavity, and the insertion opening is used for inserting the elastic member into the second receiving cavity.

In some embodiments, the second accommodating cavity is opened on the main body. In some embodiments, at least one side surface of the main body is provided with an insertion opening, and the insertion opening is used for inserting the elastic member into the second receiving cavity along a third direction, and the third direction is the same as that of the second receiving cavity. Both the first direction and the second direction are vertical directions.

In some embodiments, the elastic member is a metal member.

In some embodiments, a thin film is formed on the surface of the metal piece.

In some embodiments, the elastic member includes a curved portion and two first fastening portions, the two first fastening portions are respectively located on two sides of the curved portion, and the curved portion is against the part of the drive shaft.

In some embodiments, at least one rib is protruded from the surface of each of the first fastening parts.

An embodiment of the present invention also provides an electric toothbrush brush head, which is detachably attached to the handle of the electric toothbrush, the handle includes a vibrating drive shaft, and the electric toothbrush brush head includes a brush head body and a card a snap-fit assembly, the snap-fit component is disposed in the brush head main body, the snap-fit component is used for fixedly connecting the brush-head main body and the drive shaft, the snap-fit component includes a main body, and the main body has a The first end is provided with an accommodating cavity along the first direction, the accommodating cavity is used for accommodating the drive shaft, the wear resistance of the main body is higher than that of the main body of the brush head, and the first direction is along the The end of the brush head body connected to the handle faces the direction of the end of the brush head body away from the handle.

In some embodiments, the brush head body is not provided with an elastic member separated from the brush head body and abutting against the drive shaft.

In some embodiments, the main body includes a cavity wall forming the receiving cavity, the cavity wall is protrudingly provided with an abutting portion, and the abutting portion is used for abutting at least a part of the drive shaft.

In some embodiments, the body is not provided with a resilient wall abutting the drive shaft.

In some embodiments, the top wall of the body is a continuous wall.

In some embodiments, the material of the body is POM, PA6, PA66 or PC, and the material of the brush head body is ABS, PP or POM.

In some embodiments, the accommodating cavity accommodates the first metal portion of the drive shaft, and the shape of the accommodating cavity matches the shape of the first metal portion.

Compared with the prior art, the brush head of the electric toothbrush provided by the present application abuts against the abutment wall through an elastic member, which can provide the abutment wall with an external force required to abut the drive shaft. In this way, the main body of the brush head and the handle are connected, And realize the vibration that the handle drives the brush head of the electric toothbrush. The structure for connecting the main body of the brush head and the handle is simple, and there is no need to install additional connecting parts. Therefore, the brush head of the electric toothbrush is simple in structure, easy to manufacture, and low in production cost. In addition, the electric toothbrush head of the present application is directly attached to the handle of the electric toothbrush, and only the fixed connection between the elastic member and the main body needs to be considered, and only the connection between the electric toothbrush head and the handle needs to be considered during the assembly process. The connection can effectively prevent the offset between the brush head and the handle of the electric toothbrush, thereby ensuring the stability of the electric toothbrush during use, and the appearance effect is good.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings that are used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a perspective configuration diagram showing an electric toothbrush of the present application.

FIG. 2 is a perspective structural view of the handle in FIG. 1 .

Fig. 3 is a perspective structural view showing the brush head of the electric toothbrush shown in Fig. 1 .

Fig. 4 is an exploded view showing the brush head of the electric toothbrush according to the first embodiment of the present application.

FIG. 5 is a perspective structural view of the brush head of the electric toothbrush shown in FIG. 3 from another angle.

Fig. 6 is a cross-sectional view of the electric toothbrush head shown in Fig. 4 along a first direction X'.

FIG. 7 is a partial schematic view of the brush head of the electric toothbrush shown in FIG. 3 .

Fig. 8 is a cross-sectional view of the electric toothbrush head shown in Fig. 4 along a second direction Y'.

9 is a partial schematic view of a brush head body of another embodiment of the electric toothbrush brush head of the present application, and is a view corresponding to FIG. 7 .

Fig. 10 is a cross-sectional view of the electric toothbrush shown in Fig. 9 along the second direction Y'.

FIG. 11 is a perspective structural view of the elastic member of the brush head of the electric toothbrush of the present application.

FIG. 12 is a view of the elastic member shown in FIG. 11 from another angle.

FIG. 13 is a perspective structural view of the engaging cover of the brush head of the electric toothbrush of the present application.

FIG. 14 is a perspective structural view of the engaging cover shown in FIG. 13 from another angle.

Fig. 15 is an exploded view of the electric toothbrush head according to the second embodiment, and corresponds to Fig. 4 .

FIG. 16 is a partial schematic view of the brush head body of FIG. 15 .

Fig. 17 is a cross-sectional view of the brush head of the electric toothbrush shown in Fig. 16 along the first direction X', which corresponds to Fig. 6 .

Fig. 18 is a cross-sectional view of the electric toothbrush head shown in Fig. 16 along the second direction Y', which corresponds to Fig. 8 .

FIG. 19 is a front view of the elastic member in FIG. 15 .

20 is a perspective structural view of an electric toothbrush head according to a third embodiment.

Fig. 21 is a cross-sectional view of the brush head of the electric toothbrush shown in Fig. 20 along the first direction X', which corresponds to Fig. 6 .

Fig. 22 is a cross-sectional view of the brush head of the electric toothbrush shown in Fig. 20 along the second direction Y', which corresponds to Fig. 8 .

FIG. 23 is an exploded view of the brush head of the electric toothbrush shown in FIG. 20 and corresponds to FIG. 4 .

FIG. 24 is a front view of the elastic member in FIG. 23 .

Fig. 25 is a perspective configuration diagram showing an electric toothbrush head according to a fourth embodiment of the present application.

FIG. 26 is an exploded view of the electric toothbrush head shown in FIG. 25 .

Fig. 27 is a cross-sectional view of the electric toothbrush head shown in Fig. 25 along a first direction X'.

Fig. 28 is a cross-sectional view of the electric toothbrush head shown in Fig. 25 along the second direction Y'.

Fig. 29 is a perspective structural view showing an electric toothbrush head according to a fifth embodiment of the present invention.

FIG. 30 is an exploded view of the electric toothbrush head shown in FIG. 29 .

Fig. 31 is a cross-sectional view of the electric toothbrush head shown in Fig. 29 along a first direction X'.

Fig. 32 is a cross-sectional view of the electric toothbrush head shown in Fig. 29 along the second direction Y'.

33 is a perspective structural view showing an electric toothbrush head according to a sixth embodiment of the present invention.

FIG. 34 is an exploded view of the electric toothbrush head shown in FIG. 33 .

Fig. 35 is a cross-sectional view of the electric toothbrush head shown in Fig. 33 along a first direction X'.

Fig. 36 is a cross-sectional view of the electric toothbrush head shown in Fig. 33 along the second direction Y'.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

The present application will be further described in detail below with reference to the embodiments of the accompanying drawings.

1 and 2 , the present application provides an electric toothbrush 300 , the electric toothbrush 300 includes a handle 200 and an electric toothbrush head 100 . The electric toothbrush head 100 is detachably attached to the handle 200 of the electric toothbrush 300 . The handle 200 includes a housing 210 and a drive shaft 250 extending from one end of the handle 200 . The handle 200 adopts publicly known technology, the motor (not shown), the control board (not shown) and the battery (not shown) are accommodated in the housing 210, and one end of the drive shaft 250 is connected to the motor. At least a portion of the drive shaft 250 is inserted into the electric toothbrush head 100 when the electric toothbrush head 100 is attached to the handle 200 . The driving shaft 250 includes a first metal part 220 , a second metal part 230 and a fixing part 240 , and the first metal part 220 , the second metal part 230 and the fixing part 240 are inserted into the electric toothbrush head 100 .

[First Embodiment]

In this embodiment, please refer to FIG. 3 to FIG. 6 , the electric toothbrush brush head 100 includes a brush head main body 10 and an engaging assembly 20 . The engaging assembly 20 is accommodated in the brush head main body 10 and combined with the drive shaft 250 to brush the brush head. The side surface of the head body 10 is further provided with an accommodating portion 12 , and the accommodating portion 12 is used for accommodating the engaging component 20 . Specifically, the brush head body 10 includes an end portion 101 and a side wall 105 . The end portion 101 is an end portion connected to the handle 200 , wherein the end portion 101 includes a bottom surface 1101 , and the side wall 105 includes a side surface 1102 .

Specifically, referring to FIG. 3 , the brush head body 10 includes a bristle carrier 110 , a neck 120 and an inserting portion 130 , wherein the bristle carrier 110 and the inserting portion 130 are located at two ends of the neck 120 respectively. The bristle carrier 110 is provided with a plurality of bristle bundles 111 so as to clean the oral cavity. In this embodiment, the bristle carrier 110 may be any known structure, which will not be repeated here.

In the present embodiment, the neck portion 120 is an elongated rod-shaped structure, which is substantially a rectangular parallelepiped shape, and the insertion portion 130 is substantially a topless cone shape. Of course, in other embodiments, the neck portion 120 may also be substantially cylindrical, and the insertion portion 130 may also be in other shapes, which are not specifically limited in this application.

In this embodiment, the neck portion 120 includes a first surface 121 , the insertion portion 130 includes a second surface 131 , and the accommodating portion 12 is opened at the connection between the first surface 121 and the second surface 131 . The first surface 121 and the second surface 131 constitute the side surface 1102 of the brush head body 10 .

In this embodiment, the brush head body 10 is made of ABS plastic, PP plastic or POM plastic. Of course, in other embodiments, the brush head body 10 can also be made of other materials, which is not specifically limited in this application.

The brush head body 10 is provided with a first accommodating cavity 31 for accommodating at least a part of the drive shaft 250 . The inside of the brush head body 10 is provided with a cavity 11 along the first direction X', and the cavity 11 is opened at the end 101 of the brush head body 10, so that the drive shaft 250 can pass through the cavity 11 and the first receiving cavity in sequence. 31. Specifically, the cavity 11 accommodates at least a part of the drive shaft 250 , the cavity 11 is opened at the end 101 of the brush head body 10 , and the cavity 11 communicates with the first accommodating cavity 31 , so that at least a portion of the drive shaft 250 is provided. A part can be accommodated in the first accommodating cavity 31 after being inserted through the avoidance cavity 11 . The first direction X' is the length direction of the drive shaft 250 after the drive shaft 250 is installed in the brush head body 10. In this embodiment, almost all the components of the engaging assembly 20 can be accommodated in the accommodating portion 12 .

The snap-fit assembly 20 includes a main body 30 , an elastic member 40 and a snap-fit cover 50 . In this embodiment, the main body 30 and the brush head main body 10 are integrally formed; the elastic member 40 is accommodated in the accommodating portion 12 , extends along the first direction X′ and presses at least a portion of the drive shaft 250 along the second direction Y′ A portion, whereby the brush head body 10 is fixedly connected to at least a portion of the drive shaft 250 . In addition, the snap cover 50 covers the accommodating portion 12 , so that the elastic member 40 is stably disposed in the brush head body 10 . The second direction Y' is a direction along the side surface 1102 of the brush head body 10 on which the accommodating portion 12 is opened, and faces the interior of the brush head body 10 . Of course, in other embodiments, the elastic member 40 can also abut against at least a part of the drive shaft 250 in other directions perpendicular to the first direction X′, as long as the drive shaft 250 can be fixedly connected to the brush head body 10 through the elastic member 40 That's it.

It can be understood that, in the above manner, by opening the accommodating portion 12 on the side surface 1102 of the brush head body 10 for accommodating the snap-fit assembly 20, on the one hand, the elastic member 40 abuts the drive shaft 250, so that the brush head body 10 can be stably connected to the drive shaft 250. The handle 200 is connected, and the vibration of the electric toothbrush brush head 100 driven by the handle 200 is realized. The overall appearance can be improved, and the stability of the connection between the brush head body 10 and the handle 200 can be ensured.

In addition, by integrally forming the main body 30 and the bristle main body 10, the manufacturing process can be effectively simplified, and the production cost can be reduced, and the connection between the main body 30 and the brush head main body 10 does not need to be considered during the assembling process, and the deviation is not easily generated, so that it is possible to Avoid problems such as poor assembly.

Further, please refer to FIG. 5 and FIG. 6 , the cavity 11 includes a first cavity 112 and a second cavity 113 , and the first cavity 31 and the second cavity 113 are located in the first cavity respectively. At both ends of 112 , the second cavity 113 is located at one end of the insertion portion 130 close to the handle 200 . The first cavity 112 and the second cavity 113 communicate with each other and accommodate the second metal portion 230 and the fixing portion 240 of the handle 200 respectively.

It can be understood that the second metal part 230 is not in contact with the wall surface 114 of the first cavity 112, and the fixing part 240 is not in contact with the wall surface 115 of the second cavity 113 of the drive shaft 250, so as to prevent the drive shaft from driving the electric toothbrush. The brush head 100 vibrates.

2 and FIG. 6 , the main body 30 includes a cavity wall 32 and an abutting wall 33 for forming the first receiving cavity 31 , and at least a part of the elastic member 40 abuts against the abutting wall 33 . In the assembled state, the abutting wall 33 abuts against the first metal portion 220 of the drive shaft 250 under the elastic force of the elastic member 40 . The first metal part 220 is provided with a pattern 221 , and the abutting wall 33 abuts against the pattern 221 to connect the drive shaft 250 with the electric toothbrush head 100 .

Further, please refer to FIG. 6 and FIG. 7 , the abutting wall 33 includes a first wall surface 331 and a second wall surface 332 disposed opposite to each other, and the first wall surface 331 is the surface of the abutting wall 33 facing the first receiving cavity 14 . A wall surface 331 is protruded with a convex portion 333, the convex portion 333 is used for abutting with the pattern 221 of the first metal portion 220 of the driving shaft 250, and the second wall surface 332 is the surface of the abutting wall 33 facing away from the first receiving cavity 31. The two wall surfaces 332 are concavely provided with a concave portion 334 , at least a part of the elastic member 40 abuts against the concave portion 334 , and the position of the convex portion 333 corresponds to the position of the concave portion 334 .

It can be understood that by protruding the convex portion 333 on the first wall surface 331 of the abutting wall 33, at least a part of the elastic member 40 abuts the concave portion 334 on the second wall surface 332, so that the elastic force of the elastic member 40 can be concentrated Force is applied to the concave portion 334 of the contact wall 33, and the contact wall 33 can also use the elastic force received by the contact wall 33 to lock the drive shaft 250. In this way, the electric toothbrush head 100 can be prevented from falling off, the vibration can be stably maintained, and the noise during vibration can be maintained. small.

In addition, the main body 10 of the brush head is connected with the handle 200 in this way, and the vibration of the brush head 100 of the electric toothbrush driven by the handle 200 is realized. The structure for connecting the brush head body 10 and the handle 200 is simple, therefore, the electric toothbrush brush head 100 has a simple structure, is easy to manufacture, and has a low production cost.

Please refer to FIG. 7 and FIG. 8 , in this embodiment, both sides of the abutting wall 33 are connected to the cavity wall 32 through an isolation layer 335 , and the thickness of the isolation layer 335 is smaller than that of the abutting wall 33 .

Wherein, the thickness of the isolation layer 335 ranges from 0.05 to 2.0 mm, for example, 0.08 mm, 0.1 mm, and 1.5 mm. The length of the abutment wall 33 is 2.0-13.5mm, for example, 4.0mm, 8.5mm and 10mm, the width of the abutment wall 33 is in the range of 0.5-3.0mm, such as 0.8mm, 1.5mm and 3.0mm, the width of the abutment wall 33 Thicknesses range from 0.5-2.0mm, eg 0.5mm, 0.8mm and 1.5mm.

It can be understood that by disposing the isolation layer 335 of the above-mentioned size between the abutting wall 33 and the cavity wall 32 , the vibration of the abutting wall 33 can be not affected, and the water, dust, etc. in the accommodating portion 12 can be further prevented. into the first receiving cavity 31 .

Please refer to FIG. 9 and FIG. 10 , in another embodiment of the present application, slits 336 are defined between two sides of the abutment wall 33 and the cavity wall 32 .

It can be understood that in this embodiment, the abutting wall 33 has better flexibility, and is easy to be demolded easily during the manufacturing process, which can reduce the cost of the mold and thus the production cost.

In this embodiment, please refer to FIG. 6 again, the cavity wall 32 further includes a first limiting wall 321 and a second limiting wall 322 . The first limiting wall 321 is disposed opposite to the abutting wall 33 . The wall 321 can effectively prevent the driving shaft 250 from shaking or rotating when the first metal portion 220 of the driving shaft 250 is accommodated in the first accommodating cavity 31 . The second limiting wall 322 is perpendicular to the first limiting wall 321, and can prevent the drive shaft 250 from moving along the first direction X' and the second direction Y'.

In this embodiment, the elastic member 40 is accommodated in the engaging cover 50 and is disposed opposite to the abutting wall 33 to abut against the abutting wall 33 along the direction of the outer surface of the cavity wall 32 toward the first accommodating cavity 31 , so as to The external force required for abutting the drive shaft 250 is supplied to the abutment wall 33 .

It can be understood that, by arranging the elastic member 40 to abut against the abutment wall 33 , a sufficient external force can be provided for the abutment wall 33 to abut the external force required by the drive shaft 250 .

11 and FIG. 12 , in this embodiment, the elastic member 40 is in the shape of an arcuate sheet, and the elastic member 40 has a portion abutting against the abutting wall 33 . Specifically, the elastic member 40 includes a first contact portion 41 , The first elastic portion 42 and the first fastening portion 43. The first elastic portion 42 is located at both ends of the first contact portion 41, and the first fastening portion 43 is located at one end of the first elastic portion 42 away from the first contact portion 41. A contact portion 41 and the first elastic portion 42 are arc-shaped, and the direction in which the first contact portion 41 is recessed is opposite to the direction in which the first elastic portion 42 is recessed. The radius R1 of the circle where the first contact portion 41 is located is 2-10 mm, the corresponding central angle α is in the range of 38-48 degrees, the radius R2 of the circle where the first elastic portion 42 is located is 3-10 mm, and the corresponding central angle β is The range is 15-30 degrees.

It can be understood that by selecting such a shape, with the first fastening parts 43 on both sides as the supporting points, sufficient resilience will be generated when the first contact part 41 is stressed. If the first contact part 41 of the elastic member 40 and/or Or if the arc of the first elastic portion 42 is too large or too small, it is difficult to achieve the desired elastic force, so that the engaging force is not enough, and the electric toothbrush brush head 100 is easy to fall off in practical applications. It can not only ensure the elastic force of the elastic member 40, ensure the clamping force, prevent the electric toothbrush head 100 from falling off in practical application, but also can maintain the vibration stably, and has low noise during vibration, strong durability and long service life.

Further, the range of the linear distance D1 between the ends of the two first fastening parts 43 away from each other in the elastic member 40 is 8.0-15.0 mm, such as 10 mm, 11 mm, 13 mm, etc., and the thickness h1 of the elastic member 40 is in the range It is 0.15-0.5mm, for example, 0.2mm, 0.3mm, etc., and the width w1 of the elastic member 40 is in the range of 1.0-7.0mm, for example, 3.0mm, 4.0mm, 5.0mm, etc.

In this embodiment, the proportion of the distance D2 between the two ends of the first contact portion 41 is 20-40%, and the proportion of the distance D3 between the two first elastic portions 42 and the proportion of 2×D3 is in the range of 37-40%. 57%, the proportion of the distance D4 between the two first fastening parts 43 and the proportion of 2×D4 is in the range of 13-33%.

In addition, the height difference Δh1 between the first fastening portion 43 and the first contact portion 41 ranges from 0.5 mm to 5.0 mm.

Of course, in other embodiments, the distance between the two ends of the elastic member 40 , the distance ratio of the first contact portion 41 , the first elastic portion 42 and the first fastening portion 43 can be adjusted accordingly according to the needs, which is not required in this application. specific restrictions.

In this embodiment, the first contact portion 41 of the elastic member 40 abuts against the concave portion 334 , so as to be able to provide an external force to the abutting wall 33 in a concentrated manner.

It can be understood that the convex portion 333 is in contact with the pattern 221 on the driving shaft 250 of the handle 200 being used, and the first contact portion 41 of the elastic member 40 is in contact with the concave portion 334, so that the elastic member 40 exerts an external force on the concave portion 334 in a concentrated manner, and further Abutting the drive shaft 250 to prevent the elastic force from spreading in other directions.

In this embodiment, the material of the elastic member 40 may be beryllium copper or stainless steel. In other embodiments, the elastic member 40 may also be made of other materials, which are not specifically limited in this application.

It can be understood that, by selecting the above-mentioned materials, both the elastic force of the elastic member 40 and the engaging force can be ensured.

Please refer to FIGS. 10 , 13 to 14 , the engaging cover 50 is engaged in the accommodating portion 12 to fix the elastic member 40 on the main body 30 .

In this embodiment, the snap cover 50 is fixed in the accommodating part 12 by the snap structure. Of course, in other embodiments, the snap cover 50 can also be fixed in the accommodating part 12 by ultrasonic welding technology. The welding technique will be described later.

Specifically, the snap cover 50 includes an accommodating groove 51 for accommodating the elastic member 40 . Since the elastic member 40 has a sheet-like structure, two ends of the sheet-like structure abut against the two ends of the accommodating groove 51 , thus allowing the elastic member 40 to generate sufficient elastic force when subjected to the pressing force of the driving shaft 250 .

In this embodiment, the accommodating portion 12 includes two first inner walls 123 disposed opposite to each other, and each first inner wall 123 is protruded with an engaging portion 124 along the first direction X′. The two first side walls 52 extending in the side direction are opposite to each other. The outer surface of each of the first side walls 52 defines an engaging groove 521 , and the engaging portion 124 is engaged in the engaging groove 521 . In this embodiment, please refer to FIG. 14 , the length L2 of the engaging groove 521 of the engaging cover 50 is 5-13 mm, such as 7.0 mm, 10 mm, the width W2 is 0.2-3.5 mm, and further, the width W2 The range is 0.2-1.5mm, eg 0.6mm, 1.2mm. It can be understood that the size of the engaging portion 124 is matched with the engaging groove 521 , so that the engaging portion 124 can be engaged in the engaging groove 521 .

In this embodiment, the engaging portion 124 is located on the side of the first inner wall 123 close to the cavity wall 32 , and correspondingly, the engaging groove 521 is located on the side of the first side wall 52 close to the cavity wall 32 in the assembled state, so as to enable The engaging cover 50 is more stably engaged in the engaging groove 521 .

It can be understood that in this way, the engaging cover 50 can be securely engaged in the accommodating portion 12 .

In this embodiment, the engaging portion 124 is in the shape of a strip, and the surrounding portion of the engaging portion 124 has a certain arc, so as to be easily demolded during the manufacturing process, which is convenient for manufacturing and reduces the cost of the mold. In other embodiments, the engaging portion 124 may also be any other shape that is easy to engage, which is not specifically limited in this application.

Of course, in other embodiments, the first inner wall 123 can also be provided with an engaging groove, and the first side wall 52 is protruded with an engaging portion along the first direction X′, so that the engaging portion is engaged with the engaging groove Then, the engaging cover 50 is engaged in the accommodating portion 12 .

It can be understood that, in other embodiments, the outer surface of the snap cover 50 can be set with desired patterns, shapes, colors, etc. as required, which is not specifically limited in this application.

Further, the two first inner walls 123 of the accommodating portion 12 are inclined along the second direction Y' and approaching each other, and the included angle between the two first inner walls 123 and the plane along the second direction Y' The range is 3-5 degrees, such as 4 degrees, etc., and the first side wall 52 and the first inner wall 123 are inclined correspondingly, wherein the second direction is along the outer surface of the brush head body 10 with the accommodating portion 12 toward the brush head The direction inside the head body 10 .

The accommodating portion 12 further includes a second inner wall 125 and a third inner wall 126 arranged oppositely, and the snap cover 50 further includes a second side wall 53 and a third side wall 54 arranged oppositely. The outer surface of the second side wall 53 faces the first side wall. The second inner wall 125 is arranged, the outer surface of the third side wall 54 is arranged towards the third inner wall 126, the second inner wall 125 and the third inner wall 126 are arranged inclined along the second direction Y' and approach each other, the second inner wall 125 and the third inner wall 126 are inclined to each other. The included angles between the three inner walls 126 and the plane along the second direction Y' are all 3-5 degrees, and the second side wall 53 and the second inner wall 125 are inclined correspondingly, and the third side wall 54 and the third inner wall 126 is inclined accordingly.

It can be understood that by arranging such an inclined structure, a certain guiding effect can be achieved, thereby facilitating the assembly, making the installation speed fast and reducing the assembly cost.

Of course, in other embodiments, the first inner wall 123 and the second inner wall 125 may not be arranged obliquely, which is not limited herein.

The vertical distance D5 between the third inner wall 126 of the accommodating portion 12 and the end face of the inserting portion 130 away from the neck portion 120 is in the range of 5-25 mm, such as 10 mm, 12.3 mm, 15 mm, and the like.

In this embodiment, a first arc groove 531 is formed on the second side wall 53 , and a second arc groove 541 is formed on the third side wall 54 . There are a first mounting portion 127 and a second mounting portion 128 , so that the engaging cover 50 can be stably accommodated in the accommodating cavity 12 .

In this embodiment, the included angle formed between the first mounting portion 127 and the second mounting portion 128 and the abutting wall 33 is a right angle. Of course, in other embodiments, the corners formed between the first mounting portion 127 and the second mounting portion 128 and the abutting wall 33 may also be arc-shaped, which is not specifically limited in this application.

Referring to FIG. 14 , in this embodiment, the length L1 of the accommodating groove 51 in the engaging cover 50 is in the range of 8-15 mm, for example, 11 mm, and the height H1 of the first side wall 52 is in the range of 1.0-2.0 mm, For example 1.4mm.

It can be understood that the size of the accommodating groove 51 matches the size of the elastic member 40, which is not limited herein. Of course, the dimensions of the engaging cover 50 and the accommodating portion 12 can be adjusted accordingly, which is not limited here.

In this embodiment, the engaging cover 50 includes a third surface 55 and a fourth surface 56 . In the assembled state, the third surface 55 and the first surface 121 are on the same plane, and the fourth surface 56 and the second surface 131 are on the same plane. same face. In this way, the outer surface of the engaging cover 50 can be matched with the outer surface of the brush head body 10 without affecting the overall appearance of the electric toothbrush brush head 100 .

In this embodiment, the first accommodating cavity 31 is opened in the neck 120 and the insertion part 130 , and the abutting wall 33 and the accommodating part 12 are relative to the plane of the connecting line 60 between the neck 120 and the insertion part 130 . 70 symmetrical.

When assembling the electric toothbrush head 100 , the elastic member 40 is first placed in the accommodating groove 51 of the engaging cover 50 , and then the engaging cover 50 is snapped into the accommodating portion 12 .

The electric toothbrush brush head 100 provided by the present application includes a brush head body 10, and the brush head body 10 is provided with a first accommodation cavity 31 along the first direction X', and the first accommodation cavity 31 at least accommodates at least a part of the drive shaft 250; the brush head body 10 includes a cavity wall 32 and an abutment wall 33 for forming the first receiving cavity 31. When the electric toothbrush head 100 is in an assembled state, the abutment wall 33 abuts at least a part of the drive shaft 250 under the action of an external force; and elastic The elastic member 40 is disposed opposite to the abutment wall 33 to abut against the abutment wall 33 along the direction from the outer surface of the cavity wall 32 to the inner surface thereof, so as to provide the abutment wall 33 with the necessary requirements for abutting against the drive shaft 250 external force.

The electric toothbrush brush head 100 provided in the present application abuts against the abutment wall 33 through the elastic member 40, which can provide the abutment wall 33 with the external force required to abut the drive shaft 250. In this way, the brush head body 10 and the handle 200 are connected, And realize the vibration of the electric toothbrush brush head 100 driven by the handle 200 . The structure for connecting the main body 10 of the brush head and the handle 200 is simple, and there is no need to install additional connecting parts. Therefore, the brush head 100 of the electric toothbrush has a simple structure, is easy to manufacture, and has a low production cost.

In addition, the electric toothbrush head 100 of the present application is directly attached to the handle 200 of the electric toothbrush 300, and only the fixed connection between the elastic member 40 and the main body 30 only needs to be considered, and only the electric toothbrush head needs to be considered in the assembly process The connection between the electric toothbrush 100 and the handle 200 can effectively prevent the offset between the brush head 100 and the handle 200 of the electric toothbrush, thereby ensuring the stability of the electric toothbrush 300 during use, and the appearance effect is good.

[Second Embodiment]

Next, a second embodiment of the present application will be described with reference to FIGS. 15 to 18 . In addition, for convenience of explanation, the same reference numerals are assigned to the components having the same functions as the components described in the above-described embodiments, and the description thereof will not be repeated.

Referring to FIGS. 15-16 , the structure of the electric toothbrush head 100A of the second embodiment is different from that of the electric toothbrush head 100 of the first embodiment.

The brush head main body 100A includes a brush head main body 10A and an engaging component 20A, the engaging component 20A is accommodated in the main body 10A, and the engaging component 20A includes a main body 30A, an elastic member 40A and an engaging cover 50A.

The main body 30A defines a first accommodating cavity 31 for accommodating at least a portion of the drive shaft 250, the main body 30A further includes a cavity wall 32 forming the first accommodating cavity 31, and the brush head body 10A further includes an end portion 101 connected to the handle 200, The cavity 11 defined by the portion 101 communicates with the first accommodating cavity 31 , so that the drive shaft can be inserted into the first accommodating cavity 31 through the cavity 11 .

The elastic member 40A and the engaging cover 50A in the engaging assembly 20A are mounted on the side wall 105 of the brush head body 10A. The elastic member 40A is made of metal material, the accommodating portion 12 is opened in the outer surface 102 of the side wall 105, and the elastic member 40A is deformably accommodated in the accommodating portion 12.

When the electric toothbrush head 100A is attached to the handle 300 , the elastic member 40A is elastically deformed due to the force of the driving shaft 250 , thereby applying force to the driving shaft 250 in a direction perpendicular to the lengthwise direction of the driving shaft 250 . Of course, in other embodiments, the elastic member 40A can also be made of other materials, which is not limited herein.

In this embodiment, the accommodating portion 12 communicates with the first accommodating cavity 31 , and at least a part of the elastic member 40A extends to the first accommodating cavity 31 and directly abuts against the driving shaft 250 . In this embodiment, the elastic member 40A The first metal part 220 of the drive shaft directly abuts. Further, the first metal part 220 is provided with a pattern 221 , and the elastic member 40A directly abuts on the pattern 221 to connect the drive shaft 250 with the electric toothbrush head 100 .

Further, in this embodiment, the accommodating portion 12 is integrally formed with the brush head body 10A, the accommodating portion 12 is defined by the bottom portion 1201 and the wall 1202 extending from the bottom portion 1201 , and the bottom portion 1201 of the accommodating portion 12 is provided with a hole 1203 . The accommodating portion 12 is communicated with the first accommodating cavity 31 .

Please refer to FIGS. 17 and 19 , the elastic member 40A includes a second contact portion 44 , at least one second elastic portion 44 and at least one second fastening portion 46 . The second contact portion 44 is used for contacting the drive shaft 250 , and at least one elastic portion 44 is used for contacting the drive shaft 250 . The at least one second fastening portion 46 is used to fasten the elastic member 40A in the accommodating portion 12 , for applying a force to the driving shaft 250 in a direction perpendicular to the length direction of the driving shaft 250 . Wherein, at least a part of the contact portion is flat and is used for contacting the drive shaft 250 .

In the present embodiment, the elastic member 40A includes two second contact parts 44 , two second elastic parts 44 and two second fastening parts 46 , and the two second elastic parts 44 are respectively located at the edges of the second contact parts 44 . At both ends, the two second fastening portions 46 are respectively located at one end of the corresponding second elastic portion 44 away from the second contact portion 44 .

It can be understood that, by choosing such a shape, with the second fastening parts 46 on both sides as the supporting points, sufficient resilience will be generated when the second elastic parts 44 are stressed, so as to ensure the clamping force and prevent electric power in practical applications. The brush head 100A of the toothbrush falls off, and the vibration can be stably maintained, and the noise during vibration is low, the durability is strong, and the service life is long.

Further, the height difference Δh2 between the second fastening portion 46 and the second contact portion 44 in the elastic member 40A ranges from 0.2 mm to 5.0 mm, such as 1.5 mm, 2.1 mm, 2.6 mm, and the like.

The second contact portion 44 of the elastic member 40A directly abuts the pattern 221 on the first metal portion 220 of the drive shaft 250 .

In one embodiment, the elastic member 40A is a metal member, and a film 47 is formed on the surface of the metal member to prevent the elastic member 40A from directly contacting the drive shaft 250 , which can effectively prevent noise and the like. Of course, the film can also be omitted, and the film can also be formed only on the surface of the elastic member 40 in contact with the drive shaft 250 , or can be formed on the entire surface of the elastic member 40 , which is not limited here. The material of the film 47 can be made of wear-resistant plastic or rubber oil, which is not limited herein. The thin film 47 can be formed on the surface of the elastic member 40A by spraying or chemical vapor deposition, which is not limited herein.

In addition, in this embodiment, the engaging cover 50A is fixed in the accommodating portion 12 by ultrasonic welding technology. 15 and 18, the snap cover 50A includes two opposite first side walls 52 extending along its longitudinal direction. Before being fixed in the accommodating portion 12 by ultrasonic welding technology, One end of each first side wall 52 away from the outer surface has a connecting portion 522, and the thickness of the connecting portion 522 is thinner than other regions, so that an ultrasonic line (not shown) is formed between the connecting portion 522 and other regions; After the snap cover 50A is fixed in the accommodating portion 12 by the ultrasonic welding technology, the connecting portion 522 and the part of the brush head body 100 are fused together to form a welding area 523, so that the snap cover 50A and the brush head body 100A are fixedly connected .

It can be understood that by arranging the connecting portion 522 on the first side wall 52 of the snap cover 50A, there is a connecting portion 522 at one end of each first side wall 52 away from the outer surface, and the thickness of the connecting portion 522 is thinner than other regions, In this way, in the ultrasonic welding process, it is easier to achieve the snap-fit cover 50 and the main body of the brush head to be welded more efficiently, and sufficient space is provided to be welded with at least a part of the main body of the brush head 100 . The engaging cover 50A is fixed in the accommodating portion 12 , and has a simple structure and a more stable connection.

According to the present embodiment, since the elastic member 40A directly abuts on the pattern 221 of the driving shaft 250, the elastic force of the elastic member 40A can concentrate and directly act on the pattern 221, so that the brush head body 10 and the handle 200 can be firmly connected, and The vibration of the electric toothbrush head 100A driven by the handle 200 is realized. The structure for connecting the brush head body 10 and the handle 200 is simple, therefore, the electric toothbrush brush head 100A has a simple structure, is easy to manufacture, and has a low production cost.

In addition, the electric toothbrush head 100A of the present application is directly attached to the handle 200 of the electric toothbrush 300. In this way, only the connection between the electric toothbrush head 100A and the handle 200 needs to be considered during the assembly process, which can effectively prevent electric The offset between the toothbrush head 100A and the handle 200 further ensures the stability of the electric toothbrush 300 during use and has a good appearance.

[Third Embodiment]

Next, a third embodiment of the present application will be described with reference to FIGS. 20 to 24 . In addition, for convenience of explanation, the same reference numerals are assigned to the components having the same functions as the components described in the above-described embodiments, and the description thereof will not be repeated.

The difference between the electric toothbrush head 100B of the third embodiment and the electric toothbrush head 100 of the first embodiment is that the structure of the engaging assembly 20B is different from that of the engaging assembly 20, and accordingly, the accommodating portion 12B Its structure is different from that of the accommodating portion 12, which will be described in detail later.

In this embodiment, please refer to FIG. 20 to FIG. 24 , the electric toothbrush brush head 100B includes a brush head main body 10B and an engaging component 20B. The engaging component 20B is disposed in the brush head main body 10B, and the drive shaft 250 can extend into the engaging component. Assembly 20B, and drives the brush head body 10B to vibrate through the engaging assembly 20B. The engaging assembly 20B includes the main body 30B, the elastic member 40B and the engaging cover 50B. The elastic member 40B is an independent element disposed on the main body 30B, and the elastic member 40B directly Abuts the drive shaft 250 . In this embodiment, the drive shaft 250 is a three-dimensional structure, and the elastic member 40B is generally located on one side of the drive shaft 250 and disposed along the length direction of the brush head body 10B, which is parallel to the direction in which the drive shaft 250 is inserted into the body 30 .

The brush head body 10B is provided with an accommodating portion 12B, and the accommodating portion 12B is used for accommodating the engaging component 20B.

The accommodating portion 12B includes a first accommodating cavity 121 and a notch 122 , and the first accommodating cavity 121 and the notch 122 communicate with each other to form the accommodating portion 12B with a stepped cross-section.

In this embodiment, the accommodating portion 12B is opened on the side surface of the brush head body 10B. Further, the accommodating portion 12B is opened at the connection between the neck portion 12 and the inserting portion 13 , and the accommodating portion 12B is opposite to the neck portion 120 . It is symmetrical with the plane 70 where the connection line 60 between the insertion parts 130 is located.

The main body 30B is accommodated in the first accommodating cavity 121 , and the first accommodating cavity 31 and the second accommodating cavity 35 are opened along the first direction X′ at one end of the main body 30B close to the handle 200 . 31 and the second accommodating cavity 35 at least partially overlap in the second direction Y', the first accommodating cavity 31 is used for accommodating at least a part of the drive shaft 250, the second accommodating cavity 35 is used for accommodating the elastic member 40B, and at least the An insertion opening 324 is opened on one side. The insertion opening 324 is used for inserting the elastic member 40B into the second receiving cavity 35 along the third direction Z′, so as to set the elastic member 40B in the main body 30B, and pass the elastic member 40B along the second receiving cavity 30B. Two directions Y' abut at least a part of the drive shaft 250, the first direction X' is a direction along the end of the brush head body 10B connected to the handle 200 toward the end of the brush head body 10B away from the handle 200, the second direction Y' It is along the direction of the second accommodating cavity 35 of the main body 30B to the first accommodating cavity 31, that is, the second direction Y' is perpendicular to the first direction X', and the third direction Z' is perpendicular to the Both the first direction X' and the second direction Y' are vertical directions.

It can be understood that, in this embodiment, the main body 30B is provided with the first accommodating cavity 31 and the second accommodating cavity 35, and the elastic member 40B is embedded in the second accommodating cavity 35 along the third direction Z', so that the body 30B can be stably The elastic member 40B is disposed in the main body 30B, and the elastic member 40B abuts against at least a part of the driving shaft 250 along the second direction Y′, thereby fixedly connecting the brush head main body 10B and the first metal portion 220 of the driving shaft 250 . Since the position of the insertion opening 324 is perpendicular to the direction of the elastic force of the elastic member 40B, the elastic member 40B is prevented from being displaced and the elastic member 40B is firmly fixed in the main body 30B, which can effectively prevent the elastic member 40B from being detached from the main body 30B and improve the stability.

Of course, in other embodiments, the elastic member 40B may also be embedded in the second receiving cavity 35 along other directions, and accordingly, the position of the embedding port 324 may be adjusted accordingly, which is not limited herein.

The first metal part 220 is provided with a pattern 221 , and the elastic member 40B abuts against the pattern 221 to connect the drive shaft 250 with the electric toothbrush head 100 .

The main body 30B includes a cavity wall 32 that forms the first receiving cavity 31 . The cavity wall 32 is provided with an opening 323 , and the opening 323 allows at least a part of the elastic member 40B to pass through, so that the elastic member 40B abuts against at least a part of the driving shaft 250 , namely The elastic member 40B includes a portion passing through the opening 232 and abutting against the driving shaft 250 . It can be understood that the first accommodating cavity 31 and the second accommodating cavity 35 are communicated through the opening 323 .

In some embodiments, the elastic member 40B is a metal member, and a film (not shown) may be formed on the surface of the metal member for abutting against the drive shaft 250 to avoid the elastic member 40B directly contacting the drive shaft 250 . It is more effective to prevent noise and other situations. Of course, the film may be omitted, and the film may be formed only on the surface of the elastic member 40B in contact with the drive shaft 250, or may be formed on the entire surface of the elastic member 40B, which is not limited here.

The film can be made of wear-resistant plastic or rubber oil, which is not limited here.

Referring to FIGS. 4 , 6 and 7 , the elastic member 40B includes a third contact portion 48 and two third fastening portions 49 , and the two third fastening portions 49 are located on two sides of the third contact portion 48 respectively. In the present embodiment, the third contact portion 48 is a portion in contact with the drive shaft 250 , and the third contact portion 48 is in an arch shape to abut against at least a portion of the drive shaft 250 . Of course, in other embodiments, at least a portion of the third contact portion 48 may also be planar, so as to be in contact with at least a portion of the drive shaft 250 .

The thickness range of the elastic member 40B is 0.05-7.00mm, such as 0.1mm, 0.3mm, etc., and the width of the third contact portion 48 of the elastic member 40B is 0.1-7.00mm, such as 2.9mm, 3.5mm, etc.

In this embodiment, the material of the elastic member 40B may be beryllium copper or stainless steel. In other embodiments, the elastic member 40B may also be made of other materials, which are not specifically limited in the present invention.

It can be understood that, by selecting the above-mentioned materials, both the elastic force of the elastic member 40B and the engaging force can be ensured.

At least one rib 490 is protruded on the surface of each third fastening portion 49 , and the protruding direction of the rib 490 is consistent with the protruding direction of the third contact portion 48 in the shape of an arch.

In this embodiment, a rib 490 is protruded from the surface of the third fastening portion 49 , and the rib 490 is extended along the length direction of the elastic member 40B. It can be understood that the ribs 490 can be arranged in parallel and at intervals along any direction, and of course, other forms can also be used, which are not limited herein.

If the rib 490 is not provided, the third contact portion 48 is easily deformed by an external force. In this embodiment, since at least one rib 490 is protruded from the surface of the third fastening portion 49, during the use of the electric toothbrush 300, even if the elastic member 40B is subjected to an external force, the third contact portion 48 will be squeezed by the external force. Therefore, the rib 490 can increase the resilience, thereby effectively enhancing the stability of the elastic member 40B, and can stably connect the drive shaft 250 firmly.

The engaging cover 50B is used to fix the main body 30 in the first accommodating cavity 121 .

The snap cover 50B is fixedly connected to the brush head body 10B through a snap structure or ultrasonic welding technology.

In this embodiment, the engaging cover 50B is fixed to the notch 122 by ultrasonic welding technology.

Please refer to FIG. 5 to FIG. 6 for details. The snap cover 50B includes two first side walls 52 disposed opposite to each other. Before being fixed in the notch 122 by ultrasonic welding technology, each first side wall 52 is away from the outer surface. There is a connecting portion 522 at one end, and the thickness of the connecting portion 522 is thinner than that of other regions (as shown in FIG. 5 ), so that an ultrasonic line (not shown) is formed between the connecting portion 522 and other regions; After the snap cover 50B is fixed in the notch 122, the connecting portion 522 and the part of the brush head main body 10B are welded together to form a welding area 523, so that the snap cover 50B is fixedly connected with the brush head main body 10B (as shown in FIG. 6 ). Show).

It can be understood that by disposing the connecting portion 522 on the first side wall 52 of the snap cover 50B, the connecting portion 522 can be more easily welded, and a sufficient space is provided to be welded with at least a part of the brush head body 10B, and by The ultrasonic welding technology fixes the snap cover 50B in the notch 122 , the structure is simple, and the connection is more stable. In addition, after being welded by the ultrasonic welding technology, the first side wall 52 and the plastic part of the brush head body 10B are fused into one body.

It can be understood that, in other embodiments, the outer surface of the engaging cover 50B can be set with desired patterns, shapes, colors, etc. as required, which is not specifically limited in the present invention.

The main body 10B of the brush head is also formed with a first cavity 112 and a second cavity 113 along the first direction X'. When the brush head 100 of the electric toothbrush is in the assembled state, the first cavity 31 and the second cavity 113 are formed. Located at two ends of the first cavity 112 respectively, the first cavity 112 and the second cavity 113 respectively accommodate the second metal portion 230 and the fixing portion 240 of the handle 200 .

It can be understood that the second metal part 230 is not in contact with the wall surface 114 of the first cavity 112, and the fixing part 240 is not in contact with the wall surface 115 of the second cavity 113 of the drive shaft, so as to prevent the drive shaft from driving the electric toothbrush. Head 100 vibrations.

In addition, in this embodiment, the top wall 36 of the main body 30B is arc-shaped, and the shape of the bottom wall 57 of the engaging cover 50B matches the top wall 36 of the main body 30B, so as to be better attached to the top of the main body 30B. on wall 36. Of course, in other embodiments, the top wall 36 may also be planar, as long as the shape of the bottom wall 57 of the engaging cover 50B matches the top wall 36 of the main body 30B.

According to the present embodiment, since the elastic member 40B directly abuts against at least a part of the drive shaft 250, the elastic force of the elastic member 40B can concentrate and directly act on the drive shaft 250, so that the brush head body 10B and the handle 200 can be stably connected, And realize the vibration of the electric toothbrush brush head 100 driven by the handle 200 . The structure for connecting the brush head body 10B and the handle 200 is simple, so the electric toothbrush brush head 100 has a simple structure, is easy to manufacture, and has a low production cost. In addition, by inserting into the second accommodating cavity 35 along the third direction Z', since the position of the insertion opening 324 is perpendicular to the direction of the elastic force of the elastic member 40B, the elastic member 40B is prevented from being displaced and the elastic member 40B is firmly fixed on the elastic member 40B. Inside the main body 30B, the elastic member 40B can be effectively prevented from being detached from the inside of the main body 30B, thereby improving stability.

[Fourth Embodiment]

Next, a fourth embodiment of the present application will be described with reference to FIGS. 25 to 28 . In addition, for convenience of explanation, the same reference numerals are assigned to the components having the same functions as the components described in the above-described embodiments, and the description thereof will not be repeated.

The difference between the electric toothbrush head 100C of the fourth embodiment and the electric toothbrush head 100B of the third embodiment is that the installation positions of the engaging components 20A are different.

Please refer to FIG. 25-FIG. 28 in conjunction, the accommodating portion 12C is opened in the interior of the brush head body 10C along the first direction X', and the accommodating portion 12C is used for accommodating the engaging component 20C. The accommodating portion 12C includes a first accommodating cavity 121 and a second accommodating cavity 129 .

The engaging assembly 20C includes a main body 30C and an elastic member 40C, wherein the structure of the elastic member 40C is the same as that of the elastic member 40B, and details are not described herein again.

The main body 30C is accommodated in the first accommodating cavity 121. One end of the main body 30C close to the handle 200, that is, the first end, is provided with an extension portion 34 extending along the opposite direction to the first direction X', and the extension portion 34 is accommodated in the second accommodating cavity. into the cavity 129. In this embodiment, the extension portion 34 and the main body 30C are integrally formed. Of course, in other embodiments, the extension portion 34 and the main body 30E may also be provided separately, which is not limited herein. The inside of the main body 30C is provided with a first receiving cavity 31 along the first direction X'. The extension portion 34 defines a first cavity 341 and a second cavity 342. When the electric toothbrush head 100C is in the assembled state, the first cavity 31 and the second cavity 342 are located in the first cavity respectively. At both ends of the handle 341 , the first cavity 341 and the second cavity 342 accommodate the second metal portion 230 and the fixing portion 240 of the handle 200 , respectively.

The second metal part 230 is not in contact with the wall 3410 of the first cavity 341 , and the fixing part 240 is not in contact with the wall 3420 of the second cavity 342 , so as to prevent the drive shaft from driving the electric toothbrush head 100C to vibrate.

The end of the extension part 34 close to the handle 200 is also extended with a boss 343 , a boss 345 is also set between the boss 343 and the extension part 34 , and the second accommodating cavity 129 corresponds to the position of the boss 345 The inner wall of the toothbrush is provided with a groove 134. When the electric toothbrush brush head is in the assembled state, the convex part 345 is inserted into the groove 134 to fix the main body 30C in the second accommodating cavity 129, so as to connect the main body 30C with the main body of the brush head. 10C fixed connection. Of course, in other embodiments, the main body 30C can also be fixedly connected to the brush head main body 10C through other structures, which is not limited here. According to the present embodiment, the main body 30C is provided with the first accommodating cavity 31 and the second accommodating cavity 35, and the elastic member 40C is inserted into the second accommodating cavity 35 along the third direction Z', so that the elastic member 40C can be stably inserted into the second accommodating cavity 35. The brush head 40C is disposed in the main body 30C, and the elastic member 40C abuts against the pattern 221 on the first metal portion 220 of the drive shaft 250 along the second direction Y′, thereby connecting the brush head body 10C to the first metal portion of the drive shaft 250 220 fixed connection. The first metal portion 220 is provided with a pattern 221 , and the elastic member 40C abuts against the pattern 221 to connect the drive shaft 250 with the electric toothbrush head 100 .

According to this embodiment, since the elastic member 40C directly abuts against at least a part of the drive shaft 250 , and further, the elastic member 40C directly abuts on the pattern 221 on the first metal portion 220 of the drive shaft 250 , the elastic force of the elastic member 40C can The main body 10C of the brush head and the handle 200 can be stably connected, and the handle 200 can drive the vibration of the electric toothbrush brush head 100 by directly acting on the drive shaft 250 . The structure for connecting the brush head body 10C and the handle 200 is simple, so the electric toothbrush brush head 100 has a simple structure, is easy to manufacture, and has a low production cost.

In addition, according to this embodiment, by inserting into the second accommodating cavity 35 along the third direction Z′, since the position of the inserting port 324 is perpendicular to the direction of the elastic force of the elastic member 40C, the elastic member 40C is prevented from being displaced and firmly The elastic piece 40C is fixed in the main body 30 , which can effectively prevent the elastic piece 40C from being separated from the inside of the main body 30C and improve the stability. In addition, by arranging the extension portion 34 in the main body 30C and being accommodated in the accommodating portion 12C, the structure is simple, which is favorable for mass production.

[Fifth Embodiment]

Next, the fifth embodiment of the present invention will be described in detail with reference to FIGS. 29 to 33 . In addition, for convenience of explanation, the same reference numerals are assigned to the components having the same functions as the components described in the above-described embodiments, and the description thereof will not be repeated.

The difference between the electric toothbrush head 100D of the fifth embodiment and the electric toothbrush head 100B of the third embodiment is that the structure of the engaging assembly 20D is different from that of the engaging assembly 20B, which will be described later.

29-33, in this embodiment, the electric toothbrush brush head 100 includes a brush head body 10D and an engaging component 20D, and the engaging component 20D is disposed in the brush head body 10D.

In this embodiment, the brush head body 10D is made of ABS, PP or POM. Of course, in other embodiments, the brush head body 10D can also be made of other materials.

The snap-fit assembly 20D includes a main body 30D. One end of the main body 30D close to the handle 200, that is, the first end, is provided with a first receiving cavity 31 along the first direction X'. The first receiving cavity 31 is used for receiving at least a part of the drive shaft 250. Specifically, the first accommodating cavity 31 is used for accommodating the first metal portion 220 of the driving shaft 250 . The main body 30D includes a cavity wall 32 forming the first accommodating cavity 31 . The cavity wall 32 is protruded with an abutting portion 320 , and the abutting portion 320 is used for abutting against the drive shaft 250 . Among them, the abutting portion 320 has low elasticity and rigidity, and thus, there is no need to provide a structure such as an elastic wall abutting against the drive shaft 250 .

The wear resistance of the main body 30D is higher than that of the brush head main body 10D, so that there is no need to provide an elastic member separated from the brush head main body 10D and abutting against the drive shaft 250 . In this embodiment, the material of the main body 10D of the brush head is different from the material of the main body 30D of the engaging component 20D, and the wear resistance of the material of the main body 30D is higher than that of the material of the main body 10D of the brush head, the first direction X' The direction is along the direction of the end of the brush head body 10D connected to the handle 200 toward the end of the brush head body 10D away from the handle 200 .

Of course, in other embodiments, the wear resistance of the main body 30D is higher than the wear resistance of the brush head main body 10D can also be achieved through the arrangement of the structure, as long as the wear resistance of the main body 30D is higher than that of the brush head main body 10D That's it.

In this embodiment, when the electric toothbrush head 100D is in the assembled state, the abutting portion 320 abuts against the first metal portion 220 of the drive shaft 250 , further, the first metal portion 220 is provided with a pattern 221 , and the abutting portion 320 Abutting on the pattern 221 to connect the drive shaft 250 with the electric toothbrush head 100D.

It can be understood that the abutting portion 320 is protruded on the cavity wall 32 of the engaging component 20D to abut at least a part of the driving shaft 250 . When the driving shaft 250 of the handle 200 is inserted into the first accommodating cavity 31 , the driving shaft can be stably moved. The 250 is engaged in the first accommodating cavity 31 and is not easy to fall off, so that the drive shaft 250 and the abutting portion 320 fit more closely, thereby making the vibration effect of the electric toothbrush head 100 better.

In addition, the brush head 100D of the electric toothbrush of the present invention directly abuts the drive shaft 250 through the abutment portion 320 provided on the cavity wall 32 , and does not provide an elastic member, Structures such as the elastic wall abutting against the drive shaft 250 can effectively ensure the stability of the electric toothbrush 300 during use, and the appearance effect is good. The structure is simple, and no additional structure such as an elastic member is required, which can effectively simplify the manufacturing process and reduce the production cost.

It can be understood that the shape of the first accommodating cavity 31 matches the shape of the first metal portion 220 of the drive shaft 250 . In this embodiment, the shape of the first metal portion 220 is substantially flat, and the first accommodating cavity 31 is upward arched.

It can be understood that the shape of the first accommodating cavity 31 matches the shape of the first metal portion 220 of the drive shaft 250. Since the front end portion of the drive shaft 250, that is, the first metal portion 220 is substantially flat, in this way, when the drive shaft 250 is inserted into the first metal portion 220 When it is contained in the cavity 31, on the one hand, the drive shaft 250 can be prevented from rotating in the circumferential direction, and on the other hand, the abutting portion 320 on the cavity wall 32 abuts the drive shaft 250, which can further firmly clamp the drive shaft 250. Fitting into the first accommodating cavity 31, the drive shaft 250 can be effectively prevented from rotating in the circumferential direction and the axial direction.

The material of the main body 30D is a high wear resistance material such as polyoxymethylene resin (POM), polyamide 6 (P6), polyamide 66 (P66) or polycarbonate (PC). Of course, in other embodiments, other materials may also be selected.

It can be understood that the main body 30D can effectively prolong the service life of the electric toothbrush head 100 by selecting the above-mentioned high wear-resistance material, and the abutting portion 320 made of the above-mentioned material can directly abut the drive shaft 250, so that the drive shaft can be connected to the drive shaft 250. 250 is firmly locked in the first receiving cavity 31 and is not easy to fall off.

In this embodiment, the material of the engaging cover 50D in the engaging assembly 20D is the same as the material of the brush head body 10D.

It can be understood that the main body 30D is clamped in the accommodating portion 12 by the engaging cover 50D, and the material of the engaging cover 50D is the same as that of the brush head main body 10D. In this way, on the one hand, the driving shaft 250 can be stably held by the main body 30D. It is engaged in the first accommodating cavity 31. On the other hand, by selecting the material of the engaging cover 50D to be the same as that of the brush head body 10D, it can ensure that the appearance of the brush head body 10D is not affected.

In addition, the structure and fixing method of the engaging cover 50D are the same as the structure and fixing method of the engaging cover 50B in the third embodiment, and will not be repeated here.

In addition, in this embodiment, the top wall 36 of the main body 30D is arc-shaped, and the shape of the bottom wall 57 of the engaging cover 50D matches the top wall 36 of the main body 30D, so as to be better attached to the top of the main body 30D. on wall 36. Of course, in other embodiments, the top wall 36 may also be planar, as long as the shape of the bottom wall 57 of the engaging cover 50D matches the top wall 36 of the main body 30D.

In this embodiment, the top wall 36 is a continuous wall, so after the drive shaft 250 is inserted into the first housing cavity 31 , the pattern 221 abuts against the abutting portion 320 , so the abutting portion 320 is only slightly deformed , so that the drive shaft 20 is fixedly connected with the main body 30D.

In other embodiments, a groove (not shown) or a through hole (not shown) may also be formed in the top wall 36 , as long as the abutting portion 320 can abut the pattern 221 and connect the drive shaft 20 to the main body 30D Just fix the connection. It can be understood that, in other embodiments, the outer surface of the snap cover 50D can be set with desired patterns, shapes, colors, etc. as required, which is not specifically limited in the present invention.

The main body 10D of the brush head is also formed with a first cavity 112 and a second cavity 113 along the first direction X'. When the electric toothbrush brush head 100 is in the assembled state, the first cavity 31 and the second cavity 113 are formed. Located at two ends of the first cavity 112 respectively, the first cavity 112 and the second cavity 113 respectively accommodate the second metal portion 230 and the fixing portion 240 of the handle 200 .

In this embodiment, the second metal portion 230 does not contact the wall surface 114 of the first cavity 112 , and the fixing portion 240 does not contact the wall surface 115 of the second cavity 113 .

It can be understood that the second metal part 230 is not in contact with the wall surface 114 of the first cavity 112 , and the positioning part 240 is not in contact with the wall surface 115 of the second cavity 113 , so as to prevent the drive shaft 250 from driving the electric toothbrush head 100 . vibration.

In this embodiment, the abutting portion 320 is protruded on the cavity wall 32 of the engaging component 20D to abut at least a part of the driving shaft 250 , that is, the pattern 221 . When the driving shaft 250 of the handle 200 is inserted into the first accommodating cavity 31 , The driving shaft 250 can be firmly clamped in the first accommodating cavity 31, and is not easy to fall off, so that the driving shaft 250 and the abutting portion 320 fit more closely, thereby making the vibration effect of the electric toothbrush head 100 better. . In addition, the brush head 100 of the electric toothbrush of the present invention directly abuts the drive shaft 250 through the abutting portion 320 provided on the cavity wall 32, and does not provide an elastic member, a The elastic wall and other structures connected to the drive shaft 250 can effectively ensure the stability of the electric toothbrush 300 during use, and the appearance effect is good. The structure is simple, and there are no elastic members separated from the brush head body 10D and abutting against the drive shaft 250, elastic walls abutting against the drive shaft 250, etc., which can effectively simplify the manufacturing process and reduce the production cost.

[Sixth Embodiment]

Next, a sixth embodiment of the present invention will be described with reference to FIGS. 33 to 36 . In addition, for convenience of explanation, the same reference numerals are assigned to the components having the same functions as the components described in the above-described embodiments, and the description thereof will not be repeated.

The difference between the electric toothbrush head 100E of the sixth embodiment and the electric toothbrush head 100D of the fifth embodiment is that the installation position of the engaging assembly 20E is different.

Please refer to FIGS. 33-36 , the accommodating portion 12E is opened in the interior of the brush head body 10E along the first direction X’, and the accommodating portion 12E is used for accommodating the engaging component 20E. The accommodating portion 12E includes a first accommodating cavity 121 and a second accommodating cavity 129 .

The snap-fit assembly 20E includes a main body 30E, the main body 30E is accommodated in the first accommodating cavity 121 , and an extension portion 34 extends along the opposite direction to the first direction X' at one end of the main body 30E close to the handle 200 , that is, the first end. The extension portion 34 is accommodated in the second accommodating cavity 129 . In this embodiment, the extension portion 34 and the main body 30E are integrally formed. Of course, in other embodiments, the extension portion 34 and the main body 30E may also be provided separately, which is not limited herein.

The main body 30E is provided with a first accommodating cavity 31 along the first direction X′. The first accommodating cavity 31 is used for accommodating at least a part of the drive shaft 250 . A metal part 220 . The extending portion 34 defines a first cavity 341 and a second cavity 342. When the electric toothbrush head 100E is in the assembled state, the first cavity 31 and the second cavity 342 are located in the first cavity respectively. At both ends of the handle 341 , the first cavity 341 and the second cavity 342 accommodate the second metal portion 230 and the fixing portion 240 of the handle 200 , respectively.

The second metal portion 230 is not in contact with the wall 3410 of the first cavity 341 , and the fixing portion 240 is not in contact with the wall 3420 of the second cavity 342 to prevent the drive shaft from driving the electric toothbrush head 100E to vibrate.

The end of the extension part 34 close to the handle 200 is also extended with a boss 343 , a boss 345 is also set between the boss 343 and the extension part 34 , and the second accommodating cavity 129 corresponds to the position of the boss 345 The inner wall of the toothbrush is provided with a groove 134. In the assembled state of the electric toothbrush head, the convex part 345 is inserted into the groove 134 to fix the main body 30E in the second accommodating cavity 129, so as to connect the main body 30E to the main body of the brush head. 10E fixed connection. Of course, in other embodiments, the main body 30E and the brush head main body 10E may also be fixedly connected by other structures, which are not limited herein.

In this embodiment, an abutting portion 320 is protruded on the cavity wall 32 of the engaging assembly 20 to abut at least a part of the drive shaft 250 . The structure of the abutting portion 320 is the same as that of the fifth embodiment. It is not repeated here. The wear resistance of the main body 30E is higher than that of the main body 10E of the brush head. When the drive shaft 250 of the handle 200 is inserted into the first receiving cavity 31 , the drive shaft 250 can be firmly engaged in the first receiving cavity 31 , and it is not easy to Falling off, the drive shaft 250 and the abutting portion 320 are more closely attached, thereby making the vibration effect of the electric toothbrush head 100E better.

In addition, the electric toothbrush head 100E of the present invention directly abuts at least a part of the drive shaft 250 through the abutment portion 320 provided on the cavity wall 32 , and further, the abutment portion 320 directly abuts the first portion of the drive shaft 250 The pattern 221 on the metal portion 220 is not provided with structures such as an elastic member that is separated from the brush head body 10E and abuts against the drive shaft 250, and an elastic wall that abuts against the drive shaft 250. In this way, the electric toothbrush 300 can be effectively ensured Stability during use and good appearance. The structure is simple, and can effectively simplify the manufacturing process and reduce the production cost.

In addition, in this embodiment, by opening the accommodating portion 12E inside the brush head body 10E to accommodate the engaging assembly 20E, only the connection between the brush head body 10E and the engaging assembly 20E needs to be considered during the assembly process, which can effectively prevent the electric toothbrush. The falling off of the brush head 100E and the offset between the brush head 100E and the handle 200 of the electric toothbrush further ensure the stability of the electric toothbrush 300 during use, and the appearance effect is good, the structure is simple, and it is convenient for mass production.

[Other Embodiments]

In the first embodiment, although it is described that the snap-fit cover 50 is fixed in the accommodating portion 12 by the snap-fit structure, it can also be fixed and welded by using the ultrasonic welding technology. In addition, in the first embodiment, although the elastic member 40 is described as including the first contact portion 41, the first elastic portion 42, and the first fastening portion 43, the elastic member 40E in the second embodiment or the first elastic member 40E or the first fastening portion 43 may also be used. The elastic member 40B in the third embodiment.

In the second embodiment, although it is described that the elastic member 40E includes the second contact portion 44 , the second elastic portion 44 and the second fastening portion 46 , the elastic member 40 in the first embodiment or the third embodiment can also be used The elastic member 40B in the mode.

In the third embodiment, although it is described that the elastic member 40B includes the third contact portion 48 and the two third fastening portions 49 , the elastic member 40 in the first embodiment or the elastic member in the second embodiment may also be used. Piece 40E. In addition, in the third embodiment, although the elastic member 40B is described in direct contact with the drive shaft 250, a contact wall may be provided between the first accommodating cavity and the second accommodating cavity, so that the elastic member 40B abuts on the abutting wall, and further the abutting wall abuts on the drive shaft.

Lastly, it should be noted that in each of the above-described embodiments, each technical feature is configured by freely combining the above-described embodiments within the scope of the invention described above, or by appropriately deforming or omitting a part of each embodiment. . In addition, the above embodiments are only used to illustrate the technical solutions of the present application rather than limitations. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalent. Replace without departing from the spirit and scope of the technical solutions of the present application.

Claims

An electric toothbrush brush head, which is detachably attached to the handle of the electric toothbrush, the handle includes a vibrating drive shaft, and is characterized in that the electric toothbrush brush head includes a brush head body and an engaging assembly, so The engaging component is arranged in the main body of the brush head,

The snap-fit assembly includes a main body and an elastic piece. A first accommodating cavity is opened in the inside of the main body along a first direction. The first accommodating cavity is used to accommodate at least a part of the drive shaft. on the main body, and the elastic member extends along the first direction and abuts against at least a part of the drive shaft along a direction perpendicular to the first direction, the first direction is for the drive shaft to be installed After the main body of the brush head, the length direction of the drive shaft.
The electric toothbrush head according to claim 1, wherein,

An accommodating portion is provided on the outer surface of the brush head body, and the accommodating portion is used for accommodating at least a part of the engaging component.
The electric toothbrush head according to claim 2, wherein,

The main body is accommodated in the accommodating portion, and the main body is further provided with a second accommodating cavity along the first direction, and the second accommodating cavity is used for accommodating the elastic member.
The electric toothbrush head according to claim 3, wherein,

An abutting wall is disposed between the first accommodating cavity and the second accommodating cavity, and the elastic piece abuts against the abutting wall, so that the abutting wall is under the elastic action of the elastic piece against at least a portion of the drive shaft.
The electric toothbrush head according to claim 1, wherein,

The main body and the brush head main body are integrally formed.
The electric toothbrush head according to claim 5, wherein,

The main body includes a cavity wall and an abutting wall for forming the first accommodating cavity, at least a part of the elastic member abuts the abutting wall, and when the electric toothbrush head is in the assembled state, all the The abutment wall abuts against at least a part of the drive shaft under the action of the elastic force of the elastic member.
The electric toothbrush head according to claim 5, wherein,

The main body includes a cavity wall for forming the first accommodating cavity, the cavity wall is provided with an opening, and the opening allows at least a part of the elastic piece to pass through, so that the elastic piece abuts against the at least a portion of the drive shaft.
The electric toothbrush head according to claim 1, wherein,

The elastic piece is a metal piece, and a thin film is formed on the surface of the metal piece.
The electric toothbrush head according to claim 1, wherein,

The elastic member includes a contact portion and two fastening portions, the two fastening portions are respectively located on two sides of the contact portion, and the contact portion is in the shape of an arch to abut against at least a part of the drive shaft.
The electric toothbrush head according to claim 9, wherein,

At least one rib is protruded on the surface of each of the fastening parts, and the protruding direction of the rib is consistent with the arch-shaped protruding direction of the contact part.
An electric toothbrush brush head, which is detachably attached to the handle of an electric toothbrush, the handle includes a vibrating drive shaft, the drive shaft extends from the handle, characterized in that the electric toothbrush head It includes a brush head body and a snap-fit assembly, the snap-fit component is arranged in the brush-head body, the drive shaft can extend into the snap-fit component, and drives the brush-head body to vibrate through the snap-fit component ,

The engaging component includes a main body and an elastic piece, the elastic piece is an independent element disposed on the main body, and the elastic piece directly abuts the drive shaft.
The electric toothbrush brush head according to claim 11, wherein the brush head body is a three-dimensional structure, and the elastic member is located on one side of the drive shaft as a whole and is arranged along the length direction of the brush head body , the longitudinal direction is parallel to the direction in which the drive shaft is inserted into the main body.
The electric toothbrush head of claim 11, wherein:

The main body has a first accommodating cavity opened along the first direction for accommodating the drive shaft, the main body further includes a cavity wall forming the first accommodating cavity, an opening is formed on the cavity wall, and the The opening allows at least a portion of the elastic member to pass through.
The electric toothbrush head of claim 13, wherein:

The elastic member includes a portion passing through the opening and abutting against the drive shaft.
The electric toothbrush head of claim 13, wherein:

The brush head of the electric toothbrush is provided with a second accommodating cavity, the second accommodating cavity is used for accommodating the elastic member, and the first accommodating cavity and the second accommodating cavity are at least partially overlapped correspondingly in the second direction, The first accommodating cavity and the second accommodating cavity are communicated through the opening, and the second direction is a direction from the second accommodating cavity to the first accommodating cavity.
An electric toothbrush brush head, which is detachably attached to the handle of the electric toothbrush, the handle includes a vibrating drive shaft, and is characterized in that the electric toothbrush brush head includes a brush head body and an engaging assembly, so The engaging component is arranged in the main body of the brush head,

The engaging assembly is used for fixedly connecting the main body of the brush head and the drive shaft, the engaging assembly includes a main body, and a first end of the main body is provided with a receiving cavity along the first direction, and the receiving cavity is used for In order to accommodate the drive shaft, the wear resistance of the main body is higher than that of the brush head main body, and the first direction is along the end of the brush head main body connected with the handle toward the brush The direction of the end of the head body remote from the handle.
The electric toothbrush head of claim 16, wherein:

The brush head body is not provided with an elastic member separated from the brush head body and abutting against the drive shaft.
The electric toothbrush head of claim 16, wherein:

The main body includes a cavity wall forming the accommodating cavity, the cavity wall is protrudingly provided with an abutting portion, and the abutting portion is used for abutting at least a part of the drive shaft.
The electric toothbrush head of claim 17, wherein:

The main body is not provided with an elastic wall abutting against the drive shaft.
The electric toothbrush head according to claim 1, wherein,

The top wall of the body is a continuous wall.
The electric toothbrush head according to claim 1, wherein,

The material of the brush head body is different from the material of the body.
An electric toothbrush, characterized in that, the electric toothbrush comprises the electric toothbrush brush head and handle of any one of claims 1 to 21, and the electric toothbrush brush head is detachably attached to the handle.