Electric toothbrush head and electric toothbrush with electric toothbrush head

Abstract

The utility model provides an electric toothbrush head which is detachably installed on a handle of an electric toothbrush, the handle comprises a driving shaft capable of vibrating, the driving shaft extends from one end of the handle, the electric toothbrush head comprises a brush head main body and a clamping structure, the clamping structure is arranged in the brush head main body, and the clamping structure is arranged on the brush head main body. The driving shaft can extend into the clamping structure and drives the brush head main body to vibrate through the clamping structure, the clamping structure comprises a clamping main body and an elastic piece, the clamping main body is fixedly installed in the brush head main body, the elastic piece is an independent element arranged on the clamping main body, and the clamping main body is fixedly installed on the brush head main body. The two ends of the elastic piece are fixed to the clamping body respectively, and the elastic piece abuts against the driving shaft.

Description

Technical Field

[0001] The utility model relates to the field of electric toothbrushes, in particular to an electric toothbrush head and an electric toothbrush with the electric toothbrush head. Background Art

[0002] As living standards improve, people are paying more and more attention to dental health. As an efficient and convenient oral cleaning tool, electric toothbrushes have gradually become the preferred choice for many consumers. However, with the popularity of electric toothbrushes, the brush head, a key component that directly contacts the teeth, needs to be replaced regularly to ensure cleaning effectiveness and hygiene.

[0003] The brush head and handle of an electric toothbrush are typically designed to be detachable, allowing for subsequent brush head replacement. The handle's drive rod connects to the brush head and transmits the energy required for vibration. Because the handle and brush head vibrate, the connection between the handle and brush head must remain intact during vibration.

[0004] To meet this need, the prior art provides a common method for fixing the brush handle to the brush head, namely, the drive shaft of the brush handle and the brush head are fixedly connected via an elastic member. However, when the elastic member is assembled into the brush head, it is prone to displacement, resulting in unstable vibration of the electric toothbrush and poor performance. Utility Model Content

[0005] The present invention is completed in view of the above problems, and its purpose is to provide an electric toothbrush head with a simple structure and an electric toothbrush with an electric toothbrush head, which can ensure that the elastic member is stably arranged inside the electric toothbrush head to achieve a stable vibration effect.

[0006] One embodiment of the present invention provides an electric toothbrush head, which can be detachably attached to the handle of the electric toothbrush, the handle including a vibrating drive shaft, the drive shaft extending from one end of the handle, the electric toothbrush head including a brush head body and a clamping structure, the clamping structure being arranged in the brush head body, the drive shaft can extend into the clamping structure, and drive the brush head body to vibrate via the clamping structure, the clamping structure including a clamping body and an elastic member, the clamping body being fixedly installed in the brush head body, the elastic member being an independent element arranged on the clamping body, and the two ends of the elastic member being respectively fixed to the clamping body, and the elastic member abutting against the drive shaft.

[0007] Preferably, in one embodiment, a part of the engaging body is provided with a limiting convex portion, and another part is provided with a limiting groove. One end of the elastic member is fixedly installed on the limiting convex portion, and the other end is fixedly installed on the limiting groove, so that the elastic member applies an elastic force to the driving shaft and can clamp the driving shaft between the engaging body and the elastic member.

[0008] Preferably, in one embodiment, the elastic member includes a first part and a second part perpendicular to the first part. The first part is fixed to the limiting convex portion, and the second part is fixedly installed on the limiting groove.

[0009] Preferably, in one embodiment, the second part is an elastic arm structure, which sequentially includes a first connecting portion, an abutting portion, and a second connecting portion. One end of the first connecting portion is connected to the first part, and the other end is connected to one end of the abutting portion. The other end of the abutting portion is connected to the second connecting portion. An insertion portion is formed by protruding outward from the end of the second connecting portion far from the abutting portion, and the insertion portion is inserted into the limiting groove.

[0010] Preferably, in one embodiment, the abutting portion protrudes from the first connecting portion along the length direction of the first part, that is, protrudes toward the engaging body, so that the abutting portion and the engaging body can clamp the driving shaft.

[0011] Preferably, in one embodiment, the engaging body includes a base portion and a receiving portion protruding and extending from one end of the base portion. The base portion is fixedly installed in the brush head body, and the elastic member is installed in the receiving portion.

[0012] Preferably, in one embodiment, the receiving portion includes a body, a slot portion, and a support arm. The slot portion is provided on one side surface of the body, and the support arm is provided on the other side surface of the body and is arranged parallel to the slot portion.

[0013] Preferably, in one embodiment, the support arm includes a connecting portion, a fixing portion, and an installation portion. The connecting portion is fixedly installed on the side surface of the body and is arranged parallel to the slot portion. The fixing portion extends from the end of the connecting portion far from the base portion and protrudes from the side facing the slot portion. A receiving groove is recessed on the side surface of the fixing portion facing the slot portion for engaging the driving shaft. The installation portion is formed by protruding and extending from the end of the fixing portion far from the connecting portion toward the slot portion. The limiting convex portion is provided on the top surface of the installation portion far from the fixing portion, and the limiting groove is formed by recessing downward on the top surface of the slot portion.

[0014] Another embodiment of the present utility model provides an electric toothbrush, which includes the above-mentioned electric toothbrush head and a handle, and the electric toothbrush head is detachably connected to the handle.

[0015] Preferably, in one embodiment, a recessed portion is provided on the drive shaft, and the elastic member abuts against the recessed portion.

[0016] According to the present utility model, it is possible to provide an electric toothbrush head with a simple structure and an electric toothbrush with an electric toothbrush head that can ensure that the elastic member is stably disposed inside the electric toothbrush head to achieve a stable vibration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 FIG. is a perspective view schematically showing an electric toothbrush according to the present utility model.

[0019] Figure 2 FIG. schematically shows Figure 1 a perspective view of the handle in

[0020] Figure 3 FIG. is a perspective structural view showing an electric toothbrush head according to the present utility model.

[0021] Figure 4 FIG. is Figure 3 a sectional view taken along the line II-II of

[0022] Figure 5 FIG. is an exploded perspective view showing the engaging structure of an electric toothbrush head according to the present utility model.

[0023] Figure 6 FIG. is a perspective view showing the engaging main body of the engaging structure.

[0024] Figure 7 FIG. is a perspective view showing the elastic member of the engaging structure.

[0025] Figure 8 FIG. is an assembled perspective view showing the engaging structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0027] In addition, the X, Y, and Z axes are shown in the figure only for the convenience of describing the orientation or positional relationship shown in the drawings. In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model.

[0028] Please refer to Figure 1 and Figure 2 , the present utility model provides an electric toothbrush 300, which includes an electric toothbrush head 100 and a handle 200. The electric toothbrush head 100 is detachably mounted on the handle 200, so that the electric toothbrush head 100 can be repeatedly loaded and unloaded onto the handle 200. Among them, the handle 200 is an existing product, which includes a housing 210, and a motor, a control board and a battery (not shown) placed inside the housing 210. The motor has a drive shaft 250 that can vibrate, and the drive shaft 250 extends and protrudes from the handle 200 and is detachably connected to the electric toothbrush head 100. The electric toothbrush head 100 is detachably inserted on the drive shaft 250. Since the handle 200 is not the improved part in the present utility model and the handle 200 is an existing product, the specific internal structure of the handle 200 will not be described in detail.

[0029] In addition, although the present utility model is illustrated as an electric toothbrush 100, it should be understood that the concepts discussed herein can also be applied to manual toothbrushes using replaceable brush heads, or other manual or electric oral care appliances, including but not limited to tongue cleaners, oral irrigators, interdental devices, tooth polishers, and specially designed handled appliances with tooth engaging elements.

[0030] As Figure 3 and Figure 4 shown, in this embodiment, the electric toothbrush head 100 includes a brush head body 10 and a clamping structure 20 fixedly built therein.

[0031] In this embodiment, the brush head body 10 includes a brush head portion 110, a brush rod portion 120, and a plug-in portion 130. Among them, the brush head portion 110 and the plug-in portion 130 are respectively located at both ends of the brush rod portion 120. Among them, multiple groups of bristle bundles 111 are provided on the brush head portion 110 to clean the teeth. In this embodiment, the brush head portion 110 and the bristle bundles 111 can be of any well-known configuration, and their detailed description is omitted here.

[0032] In addition, in this embodiment, as Figure 3 shown, the brush rod portion 120 is an elongated rod-shaped structure, the plug-in portion 130 is substantially conical, and from the perspective of aesthetics, a decorative pattern is also formed on the surface of the plug-in portion 130. Of course, the shapes of the brush rod portion 120 and the plug-in portion 130 are not specifically limited and can also be other shapes, and the surface of the plug-in portion 130 can also be a smooth surface.

[0033] In this embodiment, as Figure 4 shown, the brush head body 10 is provided with a receiving portion 11 for receiving the engaging component 20. More specifically, a first groove 1301 is formed by recessing along the length direction of the brush head body 10 on one end face of the plug-in portion 130 of the brush head body 10 away from the brush rod portion 120. A second groove 1201 is recessed along the length direction of the brush head body 10 on the bottom surface of the first groove 1301 and extends to the brush rod portion 120. A third groove 1203 is recessed along the length direction of the brush head body 10 on the bottom surface of the second groove 1201 and extends to the brush head portion 110.

[0034] The first groove 1301, the second groove 1201, and the third groove 1203 are sequentially interconnected with each other, and the first groove 1301, the second groove 1201, and the third groove 1203 together form the receiving portion 11. The size and shape of the engaging structure 20 are set to be inserted into the receiving portion 11 and held in the receiving portion 11. Among them, a fixing portion 135 protrudes outward from one end of the plug-in portion 130 away from the brush rod portion 120. When the engaging structure 20 is installed in the receiving portion 11, the engaging structure 20 contacts and is fixed to the fixing portion 135, so as to prevent the engaging structure 20 from falling off the brush head body 10 due to vibration or other reasons, and further effectively prevent the engaging structure 20 from detaching from the receiving portion 11, improving stability.

[0035] In this embodiment, the brush head body 10 is preferably 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, and the present utility model is not specifically limited.

[0036] Next, the engaging structure 20 involved in this embodiment will be described in detail in combination with Figures 4 to 8 this.

[0037] The engaging structure 20 is fixedly installed in the first groove 1301 and the second groove 1201 and contacts the fixing portion 135.

[0038] The engaging structure 20 includes an engaging main body 30 and an elastic member 40 detachably installed on the engaging main body 30. That is, the elastic member 40 is an independent component provided on the engaging main body 30. The engaging main body 30 is fixedly installed in the first groove 1301 and the second groove 1201. The driving shaft 250 of the handle 200 can extend into the engaging main body 30 and abut against the elastic member 40. By applying a sufficient force to the engaging main body 30 through the elastic member 40, the engaging main body 30 and the driving shaft 250 of the handle 200 are tightly connected, so that the brush head main body 10 is driven to vibrate under the drive of the driving shaft 250 of the handle 200.

[0039] In addition, in the assembled state as Figure 4 shown, the engaging structure 20 is further formed with a first receiving cavity 21, a second receiving cavity 23 and a third receiving cavity 25 along the first direction X (the length direction of the brush head main body 10, hereinafter simply referred to as the X direction). Among them, the first receiving cavity 21 and the second receiving cavity 23 are respectively used to receive the first metal portion 220 and the second metal portion 230 of the driving shaft 250, and the third receiving cavity 25 is used to receive the fixing portion 240 of the driving shaft 250.

[0040] Refer to Figure 4 and Figure 5 , the engaging main body 30 includes a base portion 31 and a receiving portion 32 protruding and extending from one end of the base portion 31. The base portion 31 is in the shape of a hollow inverted cone, and it is installed in the first groove 1301 so that the outer surface 311 of the base portion 31 is in close contact with the inner wall surface 133 of the first groove 1301 of the plugging portion 130. One end of the base portion 31 contacts the fixing portion 135 to prevent the engaging main body 30 from falling off the brush head main body 10. A first receiving cavity 25 is recessed on one end surface of the base portion 31 away from the receiving portion 32. A second receiving cavity 23 is recessed along the length direction (X direction) of the engaging main body 30 on the bottom surface of the first receiving cavity 25, and the second receiving cavity 23 is interconnected with the first receiving cavity 25.

[0041] The receiving portion 32 protrudes and extends upward from the top surface of the base portion 21 to form a substantially hollow cylindrical shape. The receiving portion 32 includes a main body 33, a slot portion 34 and a support arm 35. The main body 33 is in a hollow cylindrical structure, and the second receiving cavity 23 is provided in the main body 33.

[0042] The slot portion 34 is provided on one side surface of the main body 33 and extends by protruding a part from the top 331 of the main body 33. At a substantially central position on the top surface 341 of the slot portion 34, a limiting groove 39 is recessed downward for the insertion portion 45 of the elastic member 40 to be inserted therein.

[0043] The support arm 35 is provided on the other side of the main body 33 and is disposed opposite and parallel to the slot portion 34. The height of the support arm 35 is greater than the height of the slot portion 34.

[0044] The support arm 35 is generally in a strip-like structure and includes a connecting portion 351, a fixing portion 353, and a mounting portion 355. The connecting portion 351 is fixedly installed on the side surface of the main body 33 and is disposed opposite and parallel to the slot portion 34, and the height of the connecting portion 351 is the same as the height of the slot portion 34, or the heights may be different.

[0045] The fixing portion 353 extends from one end of the connecting portion 351 away from the base portion 31 and protrudes from the side facing the slot portion 34. A part of the fixing portion 353 is located above the second receiving cavity 23. A receiving groove 37 is recessed on the side surface of the fixing portion 353 facing the slot portion 34. The receiving groove 37 extends along the X direction (the length direction of the support arm 35) and is configured to be above the slot portion 34 in the X direction and protrude in a direction opposite to the second direction Y (hereinafter, simply referred to as the Y direction).

[0046] Furthermore, in this embodiment, the receiving groove 37 includes a receiving surface 371, a groove surface 373, and a side surface 374. The receiving surface 371 is provided in the middle of the two groove surfaces 373, and its width (the length in the third direction Z, hereinafter, the third direction Z is simply referred to as the Z direction) matches the width of the first metal portion 220 of the drive shaft 250. When the drive shaft 250 of the handle 200 is inserted through the first receiving cavity 25 and the second receiving cavity 23 into the receiving groove 37 located in the first receiving cavity 21, the first metal portion 220 of the drive shaft 250 can be smoothly inserted and firmly engaged in the receiving groove 37, making the fit between the drive shaft 250 and the receiving groove 37 closer, and thus making the vibration effect of the electric toothbrush head 100 better.

[0047] The mounting portion 355 is provided to protrude and extend from one end side of the fixing portion 353 away from the connecting portion 351 toward the slot portion 34, that is, the mounting portion 355 is located above the second receiving cavity 23. A limiting convex portion 38 is provided on the top surface of the mounting portion 355 away from the fixing portion 353 for the limiting hole 48 of the elastic member 40 to be engaged with the mounting portion 355.

[0048] Reference Figure 4 , the elastic member 40 is fixedly installed on the engaging body 30 and is used to apply an elastic force to the drive shaft 250 so that the drive shaft 250 is stably clamped between the fixing portion 353 and the elastic member 40.

[0049] Reference Figures 4 - 8, the elastic member 40 is generally in an inverted L shape, which includes a first part 41 and a second part 43 perpendicular to the first part 41. A limiting hole 48 is provided in the central part of the first part 41. The first part 41 is installed on the installation part 355, and the limiting convex part 38 passes through the limiting hole 48. It can be understood that the shape and size of the limiting hole 48 match those of the limiting convex part 38 to achieve engagement with the limiting convex part 38 of the engaging main body 30, thereby realizing a firm connection. In addition, the thickness of the limiting convex part 38 is slightly higher than the thickness of the elastic member 40 to facilitate the installation of the elastic member 40 and prevent the offset of the elastic member 40. Specifically, it can prevent the offset of the elastic member 40 in the Y direction and the Z direction. In addition, in this embodiment, the shapes of the limiting hole 48 and the limiting convex part 38 are set to be circular. In other embodiments, they can also be set to other shapes as long as the engagement between the limiting hole 48 and the limiting convex part 38 can be achieved. The present utility model does not make specific limitations.

[0050] The second part 43 of the elastic member 40 is an elastic arm structure, which sequentially includes a first connecting part 431, an abutting part 433, and a second connecting part 435. One end of the first connecting part 431 is connected to the first part 41, and the other end is connected to one end of the abutting part 433. The other end of the abutting part 433 is connected to the second connecting part 435. The abutting part 433 is generally in a V-shaped structure. The abutting part 433 protrudes from the first connecting part 431 along the length direction of the first part 41, that is, it is formed to protrude towards the support arm 35, so that the abutting part 433 clamps the drive shaft 250 with the support arm 35.

[0051] A through insertion part 45 protrudes outward from the end of the second connecting part 435 far away from the abutting part 433. In the assembled state of the engaging main body 30 and the elastic member 40, the through insertion part 45 is inserted into the limiting groove 39, thereby preventing the elastic arm of the elastic member 40 from offsetting in the Z direction, and further ensuring that the elastic force of the elastic arm is applied to the drive shaft 250. In addition, the width of the limiting groove 39 in the Y direction is slightly wider than the thickness of the elastic member 40 to facilitate the insertion of the through insertion part 45 into the limiting groove 39.

[0052] In addition, in the state where the engaging structure 20 is assembled in the brush head main body 10, at least a part of the first part 41 and the second connecting part 435 of the second part 43 are in close contact with the inner wall surface of the brush head main body 10, and the through insertion part 45 is in close contact with the inner side surface 391 of the limiting groove 39. This can further prevent the elastic member 40 from offsetting in the X direction, thereby preventing the offset and deformation of the entire elastic member 40, and being able to firmly fix the elastic member 40 on the engaging main body 30, effectively preventing the elastic member 40 from detaching from the engaging main body 30 and improving stability.

[0053] In addition, a recess 221 is provided on the first metal portion 220 of the drive shaft 250. The abutting portion 433 of the elastic member 40 protrudes in the Y direction to abut against the recess 221, thereby connecting the drive shaft 250 to the electric toothbrush head 100. In this embodiment, a engaging portion 46 is provided at the most protruding top of the abutting portion 433. The engaging portion 46 contacts the recess 221, so that when the elastic arm applies an elastic force to the drive shaft 250, the frictional force between the elastic arm and the drive shaft 250 is increased to prevent the elastic arm from deviating from the drive shaft 250. However, this is not limited thereto. In other embodiments, the abutting portion 433 may also be formed, for example, in an arch shape, as long as it can abut against the recess 221 of the first metal portion 220 and be firmly connected thereto without falling off easily. The present utility model does not make specific limitations.

[0054] In this embodiment, the elastic member 40 is a metal member. Preferably, a high-elastic stainless steel alloy is used to ensure good elasticity, anti-fatigue performance, and corrosion resistance during repeated telescoping, so as to ensure stable performance and shape during long-term use. However, as long as the above performances can be ensured, the elastic member 40 may also be made of other materials, such as polymer elastic plastics. The present utility model does not make specific limitations.

[0055] In addition, in order to more effectively prevent noise and other situations, a thin film (not shown) may also be formed on the surface of the elastic member 40 to prevent the elastic member 40 from directly contacting the drive shaft 250. Of course, the thin film may also be omitted. The thin film may also be formed only on the surface of the elastic member 40 that contacts the drive shaft 250, or may be formed on the entire surface of the elastic member 40. The thin film may be made of wear-resistant plastics or rubber oil and other materials, which are not limited herein.

[0056] In addition, preferably, the widths of the engaging main body 30 and the elastic member 40 in the Z direction are the same to reduce the manufacturing difficulty.

[0057] According to the present utility model, during assembly, first, the elastic member 40 is inserted into the limiting groove 39 of the engaging main body 30 along the length direction of the engaging main body 30, and at the same time, the limiting hole 48 of the elastic member 40 is installed on the limiting protrusion 38 of the engaging main body 30. Then, the assembled engaging member 20 is sequentially pushed from the insertion portion 130 of the brush head main body 10 into the first groove 1301 and the second groove 1201, so that the engaging member 20 is installed in the accommodating portion 11 of the brush head main body 10 and fixed by the fixing portion 135.

[0058] Thus, according to the present utility model, by directly providing the limiting convex portion 38 and the limiting groove 39 on the engaging main body 30, the elastic member 40 can be easily installed and limited on the engaging main body 30. Moreover, by utilizing the engaging relationship between the engaging structure 20 and the brush head main body 10, the positioning of the engaging structure 20 can be achieved, preventing the elastic member 40 from disengaging from the engaging main body 30 and at the same time preventing the engaging structure 20 from disengaging from the brush head main body 10, thus improving the stability.

[0059] In addition, according to the present utility model, since the abutting portion 433 of the elastic member 40 protrudes towards the support arm 35 of the engaging main body 30, during use, the abutting portion 433 and the support arm 35 can clamp the drive shaft 250. Moreover, since the elastic member 40 directly abuts against at least a part of the drive shaft 250, the elastic force of the elastic member 40 can be concentrated and directly act on the drive shaft 250, thereby enabling the brush head main body 10 to be firmly connected to the handle 200, ensuring the stability of the electric toothbrush head 100 during use and improving the user experience.

[0060] In addition, due to the simple structure of the electric toothbrush head 100 of the present utility model, it is easy to manufacture and has a low production cost.

[0061] All aspects of the embodiments disclosed herein are illustrative and cannot be construed in a limiting sense. Therefore, the technical scope of the present utility model is not defined only by the above embodiments, but is defined based on the claims. In addition, all modifications within the meaning and scope equivalent to the claims are included.

Claims

1. An electric toothbrush head detachably attached to a handle of an electric toothbrush, wherein the handle includes a vibrating drive shaft extending from one end of the handle, wherein the electric toothbrush head is characterized in that: The electric toothbrush head includes a brush head body and a clamping structure, wherein the clamping structure is arranged in the brush head body, the driving shaft can extend into the clamping structure, and drive the brush head body to vibrate through the clamping structure. The clamping structure includes a clamping body and an elastic member. The clamping body is fixedly installed in the brush head body. The elastic member is an independent element provided on the engaging body, and both ends of the elastic member are fixed to the engaging body respectively. The elastic member abuts against the driving shaft, At least a portion of the elastic member is in contact with the brush head body.

2. The electric toothbrush head according to claim 1, wherein A portion of the engaging body is provided with a limiting convex portion, and another portion is provided with a limiting groove. One end of the elastic member is fixedly mounted on the limiting protrusion, and the other end is fixedly mounted on the limiting groove, so that the elastic member applies elastic force to the drive shaft and enables the drive shaft to be clamped between the engaging body and the elastic member.

3. The electric toothbrush head according to claim 2, wherein: The elastic member includes a first portion and a second portion perpendicular to the first portion. The first part is fixed to the limiting protrusion, and the second part is fixedly installed in the limiting groove.

4. The electric toothbrush head according to claim 3, wherein: The second part is an elastic arm structure, which includes a first connecting portion, an abutting portion and a second connecting portion in sequence. One end of the first connecting portion is connected to the first part, and the other end is connected to one end of the abutting portion. The other end of the abutting portion is connected to the second connecting portion, One end of the second connecting portion away from the abutting portion extends outward to form an insertion portion, and the insertion portion is inserted into the limiting groove.

5. The electric toothbrush head according to claim 4, wherein: The abutting portion protrudes from the first connecting portion along the length direction of the first portion, that is, is formed to protrude toward the engaging body, so that the abutting portion and the engaging body can clamp the drive shaft.

6. The electric toothbrush head according to claim 2, wherein: The engaging body includes a base and a receiving portion extending from one end of the base. The base is fixedly installed in the brush head body, The elastic member is installed on the receiving portion.

7. The electric toothbrush head according to claim 6, wherein: The receiving portion includes a body, a slot portion and a support arm, The slot portion is arranged on one side surface of the body, and the support arm is arranged on the other side surface of the body and is relatively parallel to the slot portion.

8. The electric toothbrush head according to claim 7, wherein: The support arm includes a connecting portion, a fixing portion, and a mounting portion. The connecting portion is fixedly mounted on the side of the body and is arranged relatively parallel to the slot portion. The fixing portion extends from one end of the connecting portion away from the base portion and protrudes from a side facing the slot portion. The fixing portion is recessed on one side of the slot portion to form a receiving groove, and the receiving groove is used to engage the driving shaft. The mounting portion is provided on one end of the fixing portion away from the connecting portion and protrudes toward the slot portion. The limiting protrusion is provided on the top surface of the mounting portion away from the fixing portion. The top surface of the slot portion is recessed downward to form the limiting groove.

9. An electric toothbrush, characterized in that: comprising the electric toothbrush head and handle according to any one of claims 1 to 8, The electric toothbrush head is detachably mounted on the handle.

10. The electric toothbrush according to claim 9, wherein The driving shaft is provided with a recessed portion, and the elastic member abuts against the recessed portion.

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