CN216603162U

CN216603162U - Electric toothbrush head and electric toothbrush

Info

Publication number: CN216603162U
Application number: CN202120796162.6U
Authority: CN
Inventors: 匡娟云
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-05-27
Anticipated expiration: 2031-04-16

Abstract

The utility model provides an electric toothbrush head and an electric toothbrush. The electric toothbrush brush head is detachably connected to a handle of an electric toothbrush, the handle comprises a vibratile driving shaft, the driving shaft extends from the handle, the electric toothbrush brush head comprises a brush head main body and a clamping assembly, the clamping assembly is arranged in the brush head main body, the driving shaft can stretch into the clamping assembly and drives the brush head main body to vibrate through the clamping assembly, the clamping assembly comprises a main body and an elastic piece, the elastic piece is an independent element arranged on the main body, and the elastic piece is directly abutted to the driving shaft.

Description

Electric toothbrush head and electric toothbrush

Technical Field

The utility model relates to the field of electric toothbrushes, in particular to an electric toothbrush head and an electric toothbrush.

Background

With the improvement of living standard, people pay more and more attention to the health of teeth, and the application of the electric toothbrush is more and more extensive.

Currently, there are two general ways of commercially available electric toothbrushes, one is an electric toothbrush in which bristles are driven by a motor to rotationally vibrate, and the other is an ultrasonic electric toothbrush in which a brush head is caused to vibrate at high frequency. These two types of electric toothbrushes typically vibrate the bristles to clean the teeth. The head and handle of a powered toothbrush are typically designed to be separable for subsequent replacement of the head. The driving rod of the brush handle is connected with the brush head and transmits the energy required by the vibration of the brush head to the brush head required to vibrate. As the handle and the head vibrate, the connection between the handle and the head needs to be such that it does not detach during vibration.

In order to meet the requirement, the prior art provides a common brush holder and brush head fixed connection mode, namely, the drive shaft of the brush holder and the brush head are fixedly connected through a clamping piece. An elastic piece is required to be arranged on the clamping piece to provide elastic force to abut against the driving shaft, so that the driving shaft is fixedly connected with the brush head. However, in the conventional electric toothbrush head, the elastic member is usually sleeved outside the engaging member, so that the elastic member is easily deviated and dislocated during use, and the electric toothbrush is unstable in vibration and poor in use effect.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above problems, and provides an electric toothbrush head and an electric toothbrush in which an elastic member is provided in a main body to stabilize a vibration effect.

In order to solve the above problems, an embodiment of the present invention provides an electric toothbrush head detachably attached to a handle of an electric toothbrush, the handle including a vibratable driving shaft extending from the handle, the electric toothbrush head including a head body and a fastening member, the fastening member being disposed in the head body, the driving shaft being extendable into the fastening member and driving the head body to vibrate via the fastening member, the fastening member including a body and an elastic member, the elastic member being an independent element disposed on the body, the elastic member directly abutting against the driving shaft.

In order to solve the above problems, another embodiment of the present invention provides an electric toothbrush including the electric toothbrush head described above and a handle to which the electric toothbrush head is detachably attached.

In some embodiments, the elastic member is located on one side of the drive shaft as a whole and is disposed along the extending direction of the head main body.

In some embodiments, the main body has a first end close to the handle, and a first receiving cavity and a second receiving cavity are formed along a first direction, the first receiving cavity and the second receiving cavity are at least partially overlapped with each other along a second direction, the first receiving cavity is used for receiving at least a portion of the driving shaft, the second receiving cavity is used for receiving the elastic member, so that the elastic member abuts against at least a portion of the driving shaft along the second direction, the first direction is a direction towards an end of the brush head main body far away from the handle along an end of the brush head main body connected with the handle, and the second direction is a direction towards the first receiving cavity along the second receiving cavity of the main body.

In some embodiments, at least one side of the main body is provided with an insertion opening, the insertion opening is used for allowing the elastic element to be inserted into the second accommodating cavity along a third direction, and the third direction is a direction perpendicular to both the first direction and the second direction. In some embodiments, the main body includes a cavity wall forming the first receiving cavity, and an opening is opened on the cavity wall, and at least a part of the elastic member passes through the opening, so that the elastic member abuts against at least a part of the driving shaft.

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

In some embodiments, the elastic member includes a curved surface portion and two flat surface portions, the two flat surface portions being located on both sides of the curved surface portion, respectively, and the curved surface portion having an arch shape to abut against at least a portion of the drive shaft.

In some embodiments, the surface of each of the planar portions is convexly provided with at least one rib, and the convex direction of the rib is consistent with the convex direction of the curved portion in the arch shape.

In some embodiments, the drive shaft includes a first metal portion having a pattern against which the curved surface portion abuts.

In some embodiments, the brush head body is provided with a containing part for containing the clamping component.

In some embodiments, the accommodating portion includes a first accommodating cavity and a notch, the first accommodating cavity is used for accommodating the main body, and the engaging assembly further includes an engaging cover fixedly disposed in the notch.

In some embodiments, the brush head body further has a first space avoiding cavity and a second space avoiding cavity formed along the first direction, when the electric toothbrush brush head is in an assembled state, the first receiving cavity and the second space avoiding cavity are respectively located at two ends of the first space avoiding cavity, and the first space avoiding cavity and the second space avoiding cavity respectively receive the second metal portion and the fixing portion of the handle.

In some embodiments, the snap-fit cover is fixedly connected to the brush head body by a snap-fit structure or ultrasonic welding technique.

In some embodiments, the receiving portion opens into the main body along the first direction, and the main body further includes an extending portion extending from the first end of the main body along a direction opposite to the first direction for receiving at least a portion of the drive shaft.

In some embodiments, a boss is extended from an end of the extension portion close to the handle, a protruding portion is arranged on an outer surface of a joint of the boss and the extension portion, a groove is formed in an inner wall of the second accommodating cavity, and the protruding portion is inserted into the groove to fixedly connect the main body and the brush head main body.

In some embodiments, the main body has a first cavity and a second cavity along the first direction, when the electric toothbrush head is in an assembled state, the first cavity and the second cavity are respectively located at two ends of the first cavity, and the first cavity and the second cavity respectively accommodate the second metal portion and the fixing portion of the handle.

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

According to the embodiment, the elastic part directly abuts against at least one part of the driving shaft, and the elastic force of the elastic part can be concentrated and directly acts on the driving shaft, so that the brush head main body and the handle can be stably connected, and the vibration of the brush head of the electric toothbrush driven by the handle is realized. The structure for connecting the brush head main body and the handle is simple, so that the electric toothbrush brush head is simple in structure, easy to manufacture and low in production cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view showing an electric toothbrush according to the present invention.

Fig. 2 is a perspective view of the handle of fig. 1.

Fig. 3 is a perspective view showing a head of an electric toothbrush according to a first embodiment of the present invention.

Fig. 4 is a sectional view of the electric toothbrush head shown in fig. 3 in a first direction X'.

Fig. 5 is a sectional view of the electric toothbrush head shown in fig. 3 in a second direction Y'.

Figure 6 is an exploded view of the powered toothbrush head shown in figure 3.

Figure 7 is a front view of the elastomeric member in the head of the power toothbrush.

Fig. 8 is a perspective view showing a head of an electric toothbrush according to a second embodiment of the present invention.

Figure 9 is an exploded view of the powered toothbrush head shown in figure 8.

Fig. 10 is a sectional view of the electric toothbrush head shown in fig. 8 in a first direction X'.

Fig. 11 is a sectional view of the electric toothbrush head shown in fig. 8 in a second direction Y'.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive effort based on the embodiments in the present application are within the scope of protection of the present application.

[ first embodiment ]

The first embodiment of the present invention will be described in detail below with reference to fig. 1 to 6.

Referring to fig. 1 and 2, the present invention provides an electric toothbrush 300, wherein the electric toothbrush 300 includes a handle 200 and an electric toothbrush head 100, and the electric toothbrush head 100 is detachably mounted on the handle 200 of the electric toothbrush 300. The handle 200 is constructed in a manner known in the art and includes a housing 210, a motor (not shown) disposed within the housing 210, the motor having a vibratable drive shaft 250, the drive shaft 250 extending from one end of the handle 200, a control board (not shown), and a battery (not shown). The electric toothbrush head 100 is detachably attached to the drive shaft 250. Since the handle 200 is not a modified part of the present invention, it will not be described in detail.

In this embodiment, referring to fig. 3 to 6, the electric toothbrush head 100 includes a head body 10 and a clamping assembly 20, the clamping assembly 20 is disposed in the head body 10, the driving shaft 250 can extend into the clamping assembly 20 and drive the head body 10 to vibrate via the clamping assembly 20, the clamping assembly 20 includes a body 30 and an elastic element 40, the elastic element 40 is an independent element disposed on the body 30, and the elastic element 40 directly abuts against the driving shaft 250. In this embodiment, the elastic member 40 is located on one side of the driving shaft 250 as a whole and is disposed along the extending direction of the head main body 10.

Specifically, referring to fig. 3, the brush head body 10 includes a bristle carrier 110, a neck 120, and an insertion portion 130, wherein the bristle carrier 110 and the insertion portion 130 are respectively located at two ends of the neck 120. Wherein the bristle carrier 110 is provided with a plurality of bristle tufts 111 for cleaning the oral cavity. In this embodiment, the bristle holder 110 can be of any known construction and will not be described in detail herein.

In the present embodiment, the neck portion 120 has an elongated rod-like structure and a substantially rectangular parallelepiped shape, and the insertion portion 130 has a substantially truncated cone shape. Of course, in other embodiments, the neck 120 may have a substantially cylindrical shape, and the insertion portion 130 may have other shapes, and the present invention is not limited to this.

In this embodiment, the neck 120 comprises a first surface 1201, the insertion portion 130 comprises a second surface 131, and the receiving portion 12 opens at the junction of the first surface 1201 and the second surface 131.

In this embodiment, the head body 10 is made of ABS plastic, PP plastic or POM plastic, but other materials may be used for the head body 10 in other embodiments, and the present invention is not limited thereto.

The brush head body 10 is opened with a receiving portion 12, and the receiving portion 12 is used for receiving the engaging member 20.

The accommodating portion 12 includes a first accommodating cavity 121 and a notch 122, and the first accommodating cavity 121 and the notch 122 are communicated to form the accommodating portion 12 with a step-shaped cross section.

In the present embodiment, the accommodating portion 12 is opened on the side surface of the head main body 10, and further, the accommodating portion 12 is opened at the junction of the neck portion 12 and the insertion portion 13, and the accommodating portion 12 is symmetrical with respect to the plane 70 where the connecting line 60 between the neck portion 120 and the insertion portion 130 is located.

The main body 30 is accommodated in the first accommodating cavity 121, and one end, i.e. a first end, of the main body 30 close to the handle 200 is provided with a first accommodating cavity 31 and a second accommodating cavity 35 along a first direction X ', the first accommodating cavity 31 and the second accommodating cavity 35 are at least partially overlapped in a second direction Y', the first accommodating cavity 31 is used for accommodating at least one part of the driving shaft 250, the second accommodating cavity 35 is used for accommodating the elastic element 40, at least one side surface of the main body 30 is provided with an insertion opening 324, the insertion opening 324 is used for allowing the elastic element 40 to be inserted into the second accommodating cavity 35 along a third direction Z ', so as to arrange the elastic element 40 in the main body 30 and abut against at least one part of the driving shaft 250 along the second direction Y' by the elastic element 40, the first direction X 'is a direction towards one end, far away from the handle 200, of the brush head main body 10 along one end, connected with the handle 200, of the brush head main body 10, and the second direction Y' is a direction towards the first accommodating cavity 31 along the second accommodating cavity 35 of the main body 30, the third direction Z ' is a direction perpendicular to both the first direction X ' and the second direction Y '.

It can be understood that, in the present embodiment, the first receiving cavity 31 and the second receiving cavity 35 are formed in the main body 30, and the elastic element 40 is inserted into the second receiving cavity 35 along the third direction Z ', so that the elastic element 40 can be stably disposed in the main body 30, and the elastic element 40 abuts against at least a portion of the driving shaft 250 along the second direction Y', so as to fixedly connect the brush head main body 10 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 40, the elastic member 40 is prevented from being deviated and the elastic member 40 is firmly fixed in the main body 30, and thus the elastic member 40 can be effectively prevented from being separated from the inside of the main body 30, and stability is improved.

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

The main body 30 includes a cavity wall 32 forming a first receiving cavity 31, the cavity wall 32 defines an opening 323, and the opening 323 allows at least a portion of the elastic member 40 to pass through, so that the elastic member 40 abuts against at least a portion of the driving shaft 250.

In some embodiments, the elastic member 40 is a metal member, and a thin film (not shown) may be further formed on a surface of the metal member to prevent the elastic member 40 from directly contacting the driving shaft 250, so as to more effectively prevent noise and the like. Of course, the film may be omitted, and the film may be formed only on the surface of the elastic member 40 contacting the driving shaft 250, or may be formed on the entire surface of the elastic member 40, which is not limited herein.

The film may be made of abrasion resistant plastic or rubber oil, etc., and is not limited thereto.

Referring to fig. 4, 6 and 7, the elastic member 40 includes a curved surface portion 48 and two flat surface portions 49, the two flat surface portions 49 are respectively located at two sides of the curved surface portion 48, and the curved surface portion 48 is in an arch shape to abut against at least a portion of the driving shaft 250.

The thickness of the elastic member 40 is in the range of 0.05-7.00mm, such as 0.1mm and 0.3mm, and the width of the curved surface portion 48 of the elastic member 40 is in the range of 0.1-7.00mm, such as 2.9mm and 3.5 mm.

In the present embodiment, the material of the elastic member 40 may be beryllium copper or stainless steel. In other embodiments, the elastic member 40 may be made of other materials, and the present invention is not particularly limited.

It can be understood that, by selecting the above materials, not only the elasticity of the elastic member 40 but also the engaging force can be ensured.

At least one rib 490 is protruded from the surface of each flat portion 49, and the protruding direction of the rib 490 is identical to the protruding direction of the curved portion 48 in the arch shape.

In the present embodiment, a rib 490 is protruded from the surface of the flat portion 49, and the rib 490 extends in the longitudinal direction of the elastic member 40. It is understood that the ribs 490 may be spaced apart and arranged in parallel in any direction, and may take other forms, which are not limited herein.

If the rib 490 is not provided, the curved surface portion 48 is easily deformed by an external force. In the present embodiment, since at least one rib 490 is protruded from the surface of the third flat portion 49, the curved portion 48 is not easily deformed by the external force even if the elastic member 40 is subjected to the external force during the use of the electric toothbrush 300, and thus the rib 490 can increase the resilient force, thereby effectively enhancing the stability of the elastic member 40 and stably fixing and connecting the driving shaft 250.

The engaging assembly 20 further includes an engaging cover 50, and the engaging cover 50 is used for fixing the main body 30 in the first accommodating cavity 121.

The snap cover 50 is fixedly connected to the head body 10 by a snap structure or an ultrasonic welding technique.

In the present embodiment, the snap cover 50 is fixed to the notch 122 by ultrasonic welding.

Referring to fig. 5 to 6, the fastening cover 50 includes two first sidewalls 52 disposed opposite to each other, and before being fixed in the gap 122 by the ultrasonic welding technique, a connecting portion 522 is disposed at an end of each first sidewall 52 away from the outer surface, the thickness of the connecting portion 522 is thinner than that of other areas (as shown in fig. 5), so that an ultrasonic line (not shown) is formed between the connecting portion 522 and the other areas; after the snap cover 50 is secured within the notch 122 by ultrasonic welding techniques, the connection portion 522 is welded to a portion of the head body 100 to form a weld region 523, thereby fixedly connecting the snap cover 50 to the head body 100 (as shown in fig. 6).

It can be understood that, by providing the connection portion 522 on the first side wall 52 of the snap cover 50, the connection portion 522 is easier to perform the welding operation, and provides enough space to be welded with at least a portion of the brush head body 100, and the snap cover 50 is fixed in the gap 122 by the ultrasonic welding technology, the structure is simple, and the connectivity is more stable. In addition, the first sidewall 52 is fused to the plastic of the head body 100 when welded by ultrasonic welding.

It is understood that in other embodiments, the outer surface of the snap cover 50 may be provided with a desired pattern, shape, color, etc. according to the requirement, and the present invention is not particularly limited.

The head body 10 further has a first space avoiding cavity 112 and a second space avoiding cavity 113 formed along the first direction X', when the electric toothbrush head 100 is in an assembled state, the first receiving cavity 31 and the second space avoiding cavity 113 are respectively located at two ends of the first space avoiding cavity 112, and the first space avoiding cavity 112 and the second space avoiding cavity 113 respectively receive 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 driving shaft, so as to prevent the driving shaft from driving the electric toothbrush head 100 to vibrate.

In the present embodiment, the top wall 36 of the main body 30 is formed in an arc shape, and the bottom wall 57 of the engagement cover 50 is formed in a shape matching the top wall 36 of the main body 30 so as to be attached to the top wall 36 of the main body 30 more favorably. Of course, in other embodiments, the top wall 36 may be planar, so long as the bottom wall 57 of the snap cover 50 is shaped to match the top wall 36 of the body 30.

According to the present embodiment, since the elastic member 40 directly contacts at least a portion of the driving shaft 250, the elastic force of the elastic member 40 can be concentrated and directly applied to the driving shaft 250, so that the head body 10 and the handle 200 can be stably connected, and the handle 200 can vibrate the electric toothbrush head 100. The structure for connecting the head body 10 and the handle 200 is simple, and thus the electric toothbrush head 100 has a simple structure, is easy to manufacture, and has a low production cost. In addition, by being inserted into the second receiving cavity 35 along the third direction Z', the position of the insertion opening 324 is perpendicular to the direction of the elastic force of the elastic member 40, so that the elastic member 40 is prevented from being deviated and the elastic member 40 is firmly fixed in the main body 30, thereby effectively preventing the elastic member 40 from being separated from the main body 30 and improving the stability.

[ second embodiment ]

Next, a third embodiment of the present invention will be described with reference to fig. 8 to 11. For convenience of explanation, members having the same functions as those described in the above embodiments are given the same reference numerals, and the explanation thereof will not be repeated.

The electric toothbrush head 100A of the second embodiment differs from the electric toothbrush head 100 of the first embodiment in the position where the engaging unit 20A is provided.

Referring to fig. 8-11, the accommodating portion 12A is opened in the head body 10A along the first direction X', and the accommodating portion 12A is used for accommodating the engaging member 20A. The accommodating portion 12A includes a first accommodating cavity 121 and a second accommodating cavity 129.

The engaging assembly 20A includes a main body 30A and an elastic member 40, the main body 30A is accommodated in the first accommodating cavity 121, an extending portion 34 is disposed at one end of the main body 30A close to the handle 200, i.e. the first end, and extends along a direction opposite to the first direction X', and the extending portion 34 is accommodated in the second accommodating cavity 129.

The main body 30A is provided with a first receiving cavity 31 along a first direction X', the extending portion 34 is provided with a first avoiding cavity 341 and a second avoiding cavity 342, when the electric toothbrush head 100A is in an assembled state, the first receiving cavity 31 and the second avoiding cavity 342 are respectively located at two ends of the first avoiding cavity 341, and the first avoiding cavity 341 and the second avoiding cavity 342 respectively receive the second metal portion 230 and the fixing portion 240 of the handle 200.

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

The end of the extension part 34 close to the handle 200 is further extended with a boss 343, a protrusion 345 is further arranged between the boss 343 and the extension part 34, a groove 134 is formed on the inner wall of the second accommodating cavity 129 corresponding to the position of the protrusion 345, and in the assembled state of the electric toothbrush head, the protrusion 345 is inserted into the groove 134 to fixedly arrange the main body 30A in the second accommodating cavity 129, so that the main body 30A is fixedly connected with the head main body 10A.

According to the present embodiment, the first receiving cavity 31 and the second receiving cavity 35 are opened in the main body 30A, and the elastic member 40 is inserted into the second receiving cavity 35 along the third direction Z ', so that the elastic member 40 is stably disposed in the main body 30A, and the elastic member 40 abuts against the pattern 221 on the first metal portion 220 of the driving shaft 250 along the second direction Y', thereby fixedly connecting the brush head main body 10A and the first metal portion 220 of the driving shaft 250. The first metal part 220 is provided with a pattern 221, and the elastic member 40 abuts against the pattern 221 to connect the driving shaft 250 with the electric toothbrush head 100.

According to the present embodiment, since the elastic member 40 directly contacts at least a portion of the driving shaft 250, and further, the elastic member 40 directly contacts the pattern 221 on the first metal part 220 of the driving shaft 250, the elastic force of the elastic member 40 can be concentrated and directly applied to the driving shaft 250, so that the head body 10A and the handle 200 can be stably connected, and the vibration of the handle 200 driving the electric toothbrush head 100 can be realized. The structure for connecting the head body 10A and the handle 200 is simple, and thus the electric toothbrush head 100 has a simple structure, is easy to manufacture, and has a low production cost.

In addition, according to the present embodiment, since the insertion hole 324 is positioned perpendicular to the elastic force of the elastic member 40 by inserting the elastic member 40 into the second receiving cavity 35 along the third direction Z', the elastic member 40 is prevented from being deviated and the elastic member 40 is firmly fixed in the main body 30, thereby effectively preventing the elastic member 40 from being separated from the main body 30A and improving stability. In addition, the extension portion 34 is provided in the main body 30A and is accommodated in the accommodating portion 12A, which simplifies the structure and facilitates mass production.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model.

Claims

1. An electric toothbrush head detachably attached to a handle of an electric toothbrush, the handle including a vibratile drive shaft extending from the handle, characterized in that the electric toothbrush head includes a head body and a engaging member provided in the head body, the drive shaft being extendable into the engaging member and driving the head body to vibrate via the engaging member,

the clamping assembly comprises a main body and an elastic piece, the elastic piece is an independent element arranged on the main body, and the elastic piece is directly abutted to the driving shaft.

2. The electric toothbrush head according to claim 1, wherein the elastic member is integrally provided at one side of the driving shaft in an extending direction of the head main body.

3. The electric toothbrush head of claim 1, wherein the body has a first end near the handle, and a first receiving cavity and a second receiving cavity are formed along a first direction, the first receiving cavity and the second receiving cavity are at least partially overlapped with each other along a second direction, the first receiving cavity is used for receiving at least a portion of the driving shaft, the second receiving cavity is used for receiving the elastic member, so that the elastic member abuts against at least a portion of the driving shaft along the second direction, the first direction is a direction toward an end of the head body far away from the handle along an end of the head body connected with the handle, and the second direction is a direction toward the first receiving cavity along the second receiving cavity of the body.

4. The powered toothbrush head of claim 3,

an embedding opening is formed in at least one side face of the main body and used for enabling the elastic piece to be embedded into the second accommodating cavity along a third direction, and the third direction is perpendicular to the first direction and the second direction.

5. The powered toothbrush head of claim 3,

the main body comprises a cavity wall forming the first accommodating cavity, an opening is formed in the cavity wall, and at least one part of the elastic piece penetrates through the opening, so that the elastic piece abuts against at least one part of the driving shaft.

6. The powered toothbrush head of claim 4,

the elastic piece is a metal piece, and a thin film is formed on the surface of the metal piece.

7. The powered toothbrush head of claim 1,

the elastic component comprises a curved surface part and two plane parts, wherein the two plane parts are respectively positioned on two sides of the curved surface part, and the curved surface part is in an arch shape and is abutted against at least one part of the driving shaft.

8. The powered toothbrush head of claim 7,

at least one rib is convexly arranged on the surface of each plane part, and the protruding direction of the rib is consistent with the protruding direction of the arch-shaped curved surface part.

9. The powered toothbrush head of claim 7,

the driving shaft comprises a first metal part, the first metal part is provided with a pattern, and the curved surface part abuts against the pattern.

10. The powered toothbrush head of claim 3,

the accommodating part is formed in the brush head main body and used for accommodating the clamping component.

11. The powered toothbrush head of claim 10,

the accommodating part comprises a first accommodating cavity and a notch, the first accommodating cavity is used for accommodating the main body, and the clamping assembly further comprises a clamping cover fixedly arranged in the notch.

12. The powered toothbrush head of claim 11,

the toothbrush head main body is further provided with a first avoidance cavity and a second avoidance cavity along the first direction, when the electric toothbrush head is in an assembly state, the first accommodating cavity and the second avoidance cavity are respectively located at two ends of the first avoidance cavity, and the first avoidance cavity and the second avoidance cavity respectively accommodate the second metal part and the fixing part of the handle.

13. The powered toothbrush head of claim 11,

the clamping cover is fixedly connected with the brush head main body through a clamping structure or an ultrasonic welding technology.

14. The powered toothbrush head of claim 10,

the accommodating part is opened in the main body along the first direction, and the main body further comprises an extending part which extends from the first end of the main body along the direction opposite to the first direction and is used for accommodating at least one part of the driving shaft.

15. The powered toothbrush head of claim 14,

the accommodating part further comprises a second accommodating cavity, a boss extends from the end part, close to the handle, of the extending part, a protruding part is arranged on the outer surface of the joint of the boss and the extending part, a groove is formed in the inner wall of the second accommodating cavity, and the protruding part is inserted into the groove so as to fixedly connect the main body with the brush head main body.

16. The powered toothbrush head of claim 14,

the main body is provided with a first avoidance cavity and a second avoidance cavity along the first direction, when the electric toothbrush head is in an assembly state, the first accommodation cavity and the second avoidance cavity are respectively located at two ends of the first avoidance cavity, and the first avoidance cavity and the second avoidance cavity respectively accommodate the second metal part and the fixing part of the handle.

17. An electric toothbrush head according to claim 12 or 16,

the second metal part is not in contact with the wall surface of the first cavity avoiding cavity, and the second metal part is not in contact with the wall surface of the second cavity avoiding cavity.

18. An electric toothbrush comprising an electric toothbrush head according to any one of claims 1 to 17 and a handle, the electric toothbrush head being removably attached to the handle.