Toothbrush head and electric toothbrush

Abstract

The present invention discloses a toothbrush head and an electric toothbrush, wherein the toothbrush head is used to be connected to the driving shaft of the toothbrush handle, and comprises a toothbrush head body and a clamping piece. The toothbrush head body has a brush end and a connecting end opposite to each other, the clamping piece is installed on the connecting end, and is provided with an elastic arm and a clamping groove for clamping the driving shaft. The end of the elastic arm close to the brush end is a free end, and part of the side wall of the clamping groove is formed by the elastic arm. The elastic arm is also provided with an abutment boss, which protrudes from the elastic arm into the clamping groove and can be elastically abutted with the driving shaft. The toothbrush head of the present invention can solve the technical problem that the toothbrush head is not convenient to be removed from the toothbrush handle in some existing electric toothbrushes.

Description

Technical Field

[0001] The invention relates to the technical field of electric toothbrushes, in particular to a toothbrush head and an electric toothbrush. Background Art

[0002] An electric toothbrush generally includes a toothbrush head and a toothbrush handle. A drive shaft and a motor for driving the drive shaft to vibrate are installed on the toothbrush handle. The drive shaft is then connected to the toothbrush head, thereby driving the toothbrush head to vibrate. In some existing electric toothbrushes, the toothbrush head and the toothbrush handle are fixedly connected to ensure the connection stability between the toothbrush head and the toothbrush handle. This results in that when one of the toothbrush head and the toothbrush handle is damaged, it is not convenient to remove and replace or repair it.

[0003] The above contents are only used to assist in understanding the technical solution of the invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a toothbrush head, aiming to solve the technical problem that the toothbrush head is difficult to remove from the toothbrush handle in some existing electric toothbrushes.

[0005] To achieve the above-mentioned purpose, the toothbrush head proposed in the present invention is used to be connected to the driving shaft of the toothbrush handle, and includes a toothbrush head body and a clamping member. The toothbrush head body has a brush end and a connecting end opposite to each other, and the clamping member is installed on the connecting end and is provided with an elastic arm and a clamping groove for clamping the driving shaft. The end of the elastic arm close to the brush end is a free end, and part of the side wall of the clamping groove is formed by the elastic arm. The elastic arm is also provided with an abutment boss, which protrudes from the elastic arm into the clamping groove and can elastically abut against the driving shaft.

[0006] In one embodiment, the engaging groove has a front area close to the brush end, a rear area away from the brush end, and a middle area between the front area and the rear area, and the abutting boss is arranged corresponding to the middle area.

[0007] In one embodiment, the free end of the elastic arm is arranged corresponding to the middle area, and the abutment boss is located at the free end of the elastic arm.

[0008] In one embodiment, the abutment boss has a second abutment surface for abutting against the first abutment surface, and the second abutment surface is gradually inclined toward the inside of the clamping groove in a direction close to the brush end.

[0009] In one embodiment, a first limiting groove for the drive shaft to be embedded is recessed on a surface of the elastic arm facing the clamping groove, and the abutting boss is disposed in the first limiting groove.

[0010] In one embodiment, the connecting end of the toothbrush head body is also provided with a mounting groove, and the clip-on component is installed in the mounting groove; a second limiting groove extending along the axial direction of the toothbrush head body is provided in the mounting groove, and a first limiting convex strip is provided on the outside of the clip-on component, and the first limiting convex strip is clipped into the second limiting groove along the axial direction of the toothbrush head body; and / or, a second limiting convex strip extending along the axial direction of the toothbrush head body is provided in the mounting groove, and a third limiting groove is provided on the outside of the clip-on component, and the third limiting groove is clipped onto the second limiting convex strip along the axial direction of the toothbrush head body.

[0011] In one embodiment, the clamping member also includes a base and a fixed arm, the fixed arm and the elastic arm are both connected to the base, the fixed arm and the elastic arm are spaced apart from each other to form the clamping groove; the first limiting convex strip is arranged on the surface of the fixed arm facing away from the elastic arm.

[0012] In one embodiment, the inner surface of the installation slot is further provided with a card slot, and the outer surface of the base is further provided with a card protrusion adapted to be carded with the card slot, and the card connector is detachably carded in the installation slot through the card protrusion and the card slot.

[0013] The present invention further provides an electric toothbrush, which comprises a toothbrush head and a toothbrush handle, wherein the toothbrush handle is provided with a driving shaft, and the toothbrush head is connected to the driving shaft. The toothbrush head comprises:

[0014] a toothbrush head body having a bristle end and a connecting end opposite to each other; and

[0015] A clamping member, installed at the connecting end, and provided with an elastic arm and a clamping groove for clamping the driving shaft, wherein one end of the elastic arm close to the brush end is a free end, and part of the side wall of the clamping groove is formed by the elastic arm;

[0016] The elastic arm is further provided with an abutment boss, which protrudes from the elastic arm into the clamping groove and can elastically abut against the driving shaft.

[0017] In one embodiment, the driving shaft has a first abutting surface for abutting against the abutting boss, and in the radial direction of the toothbrush head body, the width of the abutting boss is not less than the width of the first abutting surface.

[0018] The toothbrush head of the present invention is provided with an elastic arm on the clamping member, the elastic arm forms part of the side wall of the clamping groove, and the abutment boss on the elastic arm protrudes from the elastic arm into the clamping groove. It can be understood that because the size of the clamping groove is generally adapted to the drive shaft on the toothbrush handle, when the drive shaft is inserted into the clamping groove, the elastic arm will be squeezed to cause the elastic arm to undergo elastic deformation. While undergoing elastic deformation, the elastic arm will apply a reverse force to the drive shaft through the abutment boss, thereby stably clamping the drive shaft in the clamping groove, thereby achieving a stable connection between the toothbrush head and the toothbrush handle, and avoiding the situation in which the toothbrush head is loosened or even falls off relative to the drive shaft of the toothbrush handle during use of the electric toothbrush. Because the drive shaft is elastically clamped in the clamping groove, when the toothbrush head needs to be removed from the toothbrush handle, it is only necessary to pull out the drive shaft with force, which is very convenient and quick.

[0019] At the same time, one end of the elastic arm is connected to the clamping piece, and the other end is a free end, which makes it easier to push and squeeze the elastic arm when the drive shaft is inserted, and makes the deformation of the elastic arm more in place, thereby exerting more sufficient force on the drive shaft to ensure that the drive shaft is stably clamped in the clamping groove.

[0020] In addition, compared with some existing electric toothbrushes, the toothbrush head of the present invention does not need to use metal elastic parts (such as metal springs, etc.) to clamp the drive shaft on the toothbrush handle, eliminating the processing and assembly of metal elastic parts. This not only makes the production and processing of electric toothbrushes more environmentally friendly, but also greatly simplifies the processing technology of electric toothbrushes and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 It is a partial structural schematic diagram of an embodiment of an electric toothbrush of the present invention;

[0023] Figure 2 It is a structural schematic diagram of an embodiment of a toothbrush head body in a toothbrush head of the present invention;

[0024] Figure 3 A partial structural cross-sectional view of an embodiment of an electric toothbrush of the present invention;

[0025] Figure 4 for Figure 3 A schematic diagram of a partial structure of a toothbrush head of an electric toothbrush;

[0026] Figure 5 It is a structural schematic diagram of another embodiment of a toothbrush head of the present invention;

[0027] Figure 6 It is a structural schematic diagram of another embodiment of the electric toothbrush of the present invention;

[0028] Figure 7 for Figure 6 A schematic diagram of a partial structure of a toothbrush head of an electric toothbrush;

[0029] Figure 8 It is a structural schematic diagram of another embodiment of a toothbrush head of the present invention;

[0030] Fig. 9 It is a schematic structural diagram of an embodiment of a drive shaft and a motor in an electric toothbrush of the present invention.

[0031] Description of Figure Numbers:

[0032] Label name Label name Label name 10 Toothbrush head 31 Elastic Arm 34 The third limit slot 20 Toothbrush head 311 Abutment boss 35 Base 21 Brush end 312 Free end 36 Fixed arm 22 Connection terminal 313 Second abutment surface 37 Card convex 23 Mounting slot 314 The first limit slot 38 Give way slot 231 The second limit slot 32 Card slot 40 Drive shaft 232 The second limiting convex strip 321 Front area 41 First abutment surface 233 The third limiting convex strip 322 Central District 42 Cardan shaft section 234 Card slot 323 Back Area 50 Motor 30 Card connector 33 The first limiting convex strip

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention provides an electric toothbrush, such as Figure 1As shown, the electric toothbrush includes a toothbrush head 10 and a toothbrush handle (not shown), on which a drive shaft 40 and a motor 50 for driving the drive shaft 40 to vibrate are mounted, and the drive shaft 40 is connected to the toothbrush head 10, thereby driving the toothbrush head 10 to vibrate.

[0037] However, in some existing electric toothbrushes, the toothbrush head 10 and the toothbrush handle are fixedly connected to ensure the connection stability between the toothbrush head 10 and the toothbrush handle. This results in that when one of the toothbrush head 10 and the toothbrush handle is damaged, it is inconvenient to remove and replace or repair it. Therefore, the present invention also provides a toothbrush head 10 to solve the above technical problem.

[0038] In the embodiment of the present invention, Figures 2 to 8 As shown, the toothbrush head 10 is used to be connected to the driving shaft 40 of the toothbrush handle, and includes a toothbrush head body 20 and a clamping member 30. Figure 2 As shown, the toothbrush head body 20 has a relative brush end 21 and a connecting end 22 , wherein the brush end 21 refers to an end having a brush, and the connecting end 22 is provided with a mounting groove 23 , which can be formed by the internal hollow setting of the toothbrush head body 20 .

[0039] The clamping member 30 is installed at the connecting end 22, specifically, in the mounting groove 23, and the mounting method may be screw connection, clamp connection, bonding, etc., and the specific method may be selected according to the actual situation. Figure 4 or Figure 7 As shown, the clamping member 30 is further provided with an elastic arm 31 and a clamping groove 32 for clamping the driving shaft 40. It should be noted that in order to enable the driving shaft 40 to stably drive the toothbrush head body 20 to vibrate, as shown in FIG. Fig. 9 As shown, the drive shaft 40 is generally provided with a clamping shaft section 42 located at its end and having an abutting plane, and the entire drive shaft 40 is in surface contact with the clamping groove 32 through the clamping shaft section 42. Therefore, the clamping groove 32 mentioned in this solution refers to the groove section that actually makes surface contact with the clamping shaft section 42 on the drive shaft 40. For example, in one embodiment, Figure 4 or Figure 7 As shown, the clamping member 30 is provided with a clamping groove 32 at its end and a clearance groove 38 connected to the clamping groove 32 . The clearance groove 38 is used for the drive shaft 40 to pass through and be clamped into the clamping groove 32 .

[0040] In this embodiment, one end of the elastic arm 31 close to the brush end 21 is a free end 312, and part of the side wall of the clamping groove 32 is formed by the elastic arm 31. Specifically, to achieve the above structure, the entire clamping member 30 can be made of elastic material, and after the clamping groove 32 is formed, a part of the side surface that can be bent outwards is processed on the side surface of the clamping groove 32 without cutting, and the part of the side surface that can be bent outwards can serve as the elastic arm 31.

[0041] Of course, if Figure 5 As shown, the clamping member 30 may also include a base 35 and a fixed arm 36 , the elastic arm 31 and the fixed arm 36 are both connected to the base 35 , and the fixed arm 36 and the elastic arm 31 are spaced apart to form the clamping groove 32 .

[0042] It can be understood that when one end of the elastic arm 31 is connected to the clamping piece 30 and the other end is a free end 312, it can make it easier to push and squeeze the elastic arm 31 when the drive shaft 40 is inserted, and make the deformation of the elastic arm 31 more in place, thereby applying more sufficient force to the drive shaft 40 to ensure that the drive shaft 40 is stably clamped in the clamping groove 32.

[0043] In this embodiment, please combine Figure 3 and Figure 4 The elastic arm 31 is also provided with an abutting boss 311, which protrudes from the elastic arm 31 into the clamping groove 32 and can elastically abut against the drive shaft 40. It can be understood that because the size of the clamping groove 32 is generally adapted to the drive shaft 40 on the toothbrush handle, when the drive shaft 40 is inserted into the clamping groove 32, the elastic arm 31 will be squeezed to cause the elastic arm 31 to undergo elastic deformation. While undergoing elastic deformation, the elastic arm 31 will apply a reverse force to the drive shaft 40 through the abutting boss 311, thereby stably clamping the drive shaft 40 in the clamping groove 32, thereby achieving a stable connection between the toothbrush head body 20 and the toothbrush handle. Because the drive shaft 40 is elastically clamped in the clamping groove 32, when the toothbrush head body 20 needs to be removed from the toothbrush handle, it is only necessary to forcefully pull out the drive shaft 40, which is very convenient and quick.

[0044] In one embodiment, in order to ensure the clamping force of the elastic arm 31 on the drive shaft 40, the drive shaft 40 has a first abutting surface 41 for abutting against the abutting boss 311, and the width of the abutting boss 311 in the radial direction of the toothbrush head body 20 is not less than the width of the first abutting surface 41. That is, the width of the abutting boss 311 can be equal to the width of the first abutting surface 41, or can be greater than the width of the first abutting surface 41. It should be noted that the abutting boss 311 has a second abutting surface 313 abutting against the first abutting surface 41, and the width of the abutting boss 311 in the radial direction of the toothbrush head body 20 is equivalent to the width of the second abutting surface 313.

[0045] It is understood that when the width of the abutting boss 311 is set larger, the width of the elastic arm 31 protruding with the abutting boss 311 will also be set larger. Compared with the elastic arm with a smaller width, the elastic arm 31 with a larger width can generate a greater clamping force on the drive shaft 40 after deformation, ensuring stable clamping of the drive shaft 40.

[0046] In one embodiment, if Figure 4 or Figure 7 As shown, the clamping groove 32 has a front area 321 close to the brush end 21, a rear area 323 away from the brush end 21, and a middle area 322 located between the front area 321 and the rear area 323, and the abutting boss 311 is arranged corresponding to the middle area 322. Specifically, the drive shaft 40 is generally provided with a clamping shaft section 42 located at its end and having a first abutting surface 41. The entire drive shaft 40 is in surface contact with the clamping groove 32 through the clamping shaft section 42, thereby driving the toothbrush head 10 to vibrate. The areas at both ends of the clamping shaft section 42 correspond to the front area 321 and the rear area 323 of the clamping groove 32, and the position of the middle part of the clamping shaft section 42 corresponds to the middle area 322 of the clamping groove 32. Therefore, when the abutting boss 311 is arranged at a position corresponding to the middle area 322 of the clamping groove 32, it can abut against the middle position of the clamping shaft section 42, so that the driving shaft 40 can drive the toothbrush head 10 to vibrate better and more stably.

[0047] In one embodiment, if Figure 4 As shown, the free end 312 of the elastic arm 31 is arranged corresponding to the middle area 322, and the abutting boss 311 is located at the free end 312 of the elastic arm 31. In this embodiment, on the basis of enabling the abutting boss 311 to abut against the middle position of the clamping shaft section 42, the abutting boss 311 is located at the free end 312 of the elastic arm 31. Such an arrangement not only makes it easier to push and squeeze the elastic arm 31 when the drive shaft 40 is inserted, but also makes the elastic arm 31 exert a greater force on the drive shaft 40, thereby ensuring that the drive shaft 40 is stably clamped in the clamping groove 32.

[0048] In one embodiment, if Figure 4 As shown, the drive shaft 40 has a first abutting surface 41 for abutting against the abutting boss 311, and the abutting boss 311 has a second abutting surface 313 for abutting against the first abutting surface 41, and the second abutting surface 313 gradually tilts toward the inside of the clamping groove 32 in the direction close to the brush end 21. It can be understood that the elastic arm 31 will deflect at a certain angle when it is squeezed and deformed by the drive shaft 40, and the second abutting plane is inclined so that it can be parallel to the first abutting plane on the drive shaft 40 after the elastic arm 31 deflects at a certain angle, thereby generating a sufficient area of ​​surface contact between the abutting boss 311 and the drive shaft 40, ensuring the clamping stability of the drive shaft 40 in the clamping groove 32.

[0049] In addition, please combine Figure 3 and Figure 4 When the free end 312 of the elastic arm 31 is set corresponding to the middle area 322 of the snap-fit ​​groove 32, in order to prevent the front end of the front area 321 of the snap-fit ​​groove 32 on the drive shaft 40 from tilting due to the lack of limit, the front area 321 of the snap-fit ​​groove 32 can be set as an annular structure with a limiting through hole, so that the front end of the drive shaft 40 is limited in the limiting through hole when it is inserted.

[0050] In one embodiment, please combine Figures 6 to 8 The surface of the elastic arm 31 facing the clamping groove 32 is concavely provided with a first limiting groove 314 for the drive shaft 40 to be embedded, and the abutting boss 311 is arranged in the first limiting groove 314. Specifically, when the drive shaft 40 is inserted into the clamping groove 32, the side with the first abutting surface 41 is embedded in the first limiting groove 314. The first limiting groove 314 can prevent the drive shaft 40 from tilting relative to the abutting boss 311, ensuring that the drive shaft 40 and the abutting boss 311 are accurately abutted and have a sufficient contact area.

[0051] In one embodiment, please combine Figure 2 , Figure 5 and Figure 8 The connecting end 22 of the toothbrush head body 20 is also provided with a mounting groove 23, and the clamping member 30 is installed in the mounting groove 23; the mounting groove 23 is provided with a second limiting groove 231 extending along the axial direction of the toothbrush head body 20, and the clamping member 30 is provided with a first limiting convex strip 33 on the outside, and the first limiting convex strip 33 is clamped into the second limiting groove 231 along the axial direction of the toothbrush head body 20. It can be understood that the provision of the first limiting convex strip 33 and the second limiting groove 231 facilitates the fast positioning of the clamping member 30 when it is installed on the toothbrush head body 20, and plays a role in preventing the clamping member 30 from rotating after installation, so as to ensure the stable connection of the toothbrush head 10 on the toothbrush handle.

[0052] In addition, to simplify the structure and processing technology, in the present embodiment, the second limiting groove 231 is formed by two third limiting convex strips 233 protruding into the mounting groove 23, and the two third limiting convex strips 233 are integrally formed with the toothbrush head body 20.

[0053] In another embodiment, please combine Figure 2 , Figure 5 and Figure 8 The mounting groove 23 is provided with a second limiting convex strip 232 extending in the axial direction of the toothbrush head body 20, and the clamping member 30 is provided with a third limiting groove 34, and the third limiting groove 34 is clamped to the second limiting convex strip 232 in the axial direction of the toothbrush head body 20. This also facilitates the fast positioning of the clamping member 30 when it is installed on the toothbrush head body 20, and prevents the clamping member 30 from rotating after installation.

[0054] In one embodiment, if Figure 5 or Figure 8 As shown, the clamping member 30 further includes a base 35 and a fixed arm 36, the fixed arm 36 and the elastic arm 31 are both connected to the base 35, the fixed arm 36 and the elastic arm 31 are spaced and opposite to each other to form the clamping groove 32; the first limiting convex strip 33 is arranged on the surface of the fixed arm 36 facing away from the elastic arm 31. Such arrangement enables the first limiting convex strip 33 to not only play a role in positioning and anti-rotation, but also to serve as a reinforcing rib to strengthen the fixed arm 36. Then, when the drive shaft 40 is inserted into the clamping groove 32, the fixed arm 36 will not be deformed substantially under the reinforcement of the first limiting convex strip 33, but mainly deformed by the elastic arm 31 to allow the drive shaft 40 to pass through, so as to ensure that the elastic arm 31 has sufficient elastic force to act on the drive shaft 40, thereby ensuring the stable clamping of the drive shaft 40.

[0055] In one embodiment, the inner surface of the mounting groove 23 is further provided with a clamping groove 234, and the outer surface of the base 35 is further provided with a clamping protrusion 37 adapted to be clamped with the clamping groove 234, and the clamping member 30 is detachably clamped in the mounting groove 23 through the clamping protrusion 37 and the clamping groove 234. It can be understood that the coordination of the clamping protrusion 37 and the clamping groove 234 greatly facilitates the assembly and disassembly of the clamping member 30 on the toothbrush head body 20.

[0056] Of course, the mounting groove 23 of the toothbrush head body 20 may be provided with a clamping protrusion 37, and the clamping groove 234 may be provided outside the clamping member 30. The specific configuration may be based on actual needs. For the stability of the clamping connection, a plurality of clamping protrusions 37 and a plurality of clamping grooves 234 may be provided, and the plurality of clamping protrusions 37 and clamping grooves 234 may be arranged at intervals along the circumferential direction of the toothbrush head body 20.

[0057] The electric toothbrush proposed in the present invention comprises a toothbrush handle and a toothbrush head 10, wherein a driving shaft 40 is mounted on the toothbrush handle, and the driving shaft 40 is used to connect with the toothbrush head 10 to drive the toothbrush head 10 to vibrate. The specific structure of the toothbrush head 10 refers to the above embodiment, and since the electric toothbrush adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0058] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A toothbrush head, used to be connected to the drive shaft of a toothbrush handle, characterized in that: The toothbrush head comprises: a toothbrush head body having a bristle end and a connecting end opposite to each other; and A clamping member, installed at the connecting end, and provided with an elastic arm and a clamping groove for clamping the driving shaft, wherein one end of the elastic arm close to the brush end is a free end, and part of the side wall of the clamping groove is formed by the elastic arm; The elastic arm is further provided with an abutment boss, which protrudes from the elastic arm into the clamping groove and can elastically abut against the drive shaft; The clamping groove has a front area close to the brush end, a rear area away from the brush end, and a middle area between the front area and the rear area, and the abutting boss is arranged corresponding to the middle area; The free end of the elastic arm is arranged corresponding to the middle area, and the abutment boss is located at the free end of the elastic arm; A first limiting groove for the drive shaft to be embedded is concavely formed on the surface of the elastic arm facing the clamping groove, and the abutting boss is arranged in the first limiting groove.

2. The toothbrush head according to claim 1, characterized in that The driving shaft has a first abutting surface for abutting against the abutting boss, and the abutting boss has a second abutting surface for abutting against the first abutting surface, and the second abutting surface gradually inclines toward the inside of the clamping groove in a direction close to the brush end.

3. The toothbrush head according to claim 1 or 2, characterized in that: The connecting end of the toothbrush head body is also provided with a mounting groove, and the clamping member is installed in the mounting groove; A second limiting groove extending in the axial direction of the toothbrush head body is provided in the mounting groove, and a first limiting convex strip is provided outside the clamping member, and the first limiting convex strip is clamped into the second limiting groove in the axial direction of the toothbrush head body; And / or, a second limiting convex strip extending along the axial direction of the toothbrush head body is provided in the installation groove, and a third limiting groove is provided outside the clamping member, and the third limiting groove is clamped to the second limiting convex strip along the axial direction of the toothbrush head body.

4. The toothbrush head according to claim 3, characterized in that: The clamping member further comprises a base and a fixed arm, wherein the fixed arm and the elastic arm are both connected to the base, and the fixed arm and the elastic arm are spaced apart from each other to form the clamping groove; The first limiting convex strip is arranged on a surface of the fixed arm facing away from the elastic arm.

5. The toothbrush head according to claim 4, characterized in that The inner surface of the installation slot is also provided with a clamping slot, and the outer surface of the base is also provided with a clamping protrusion adapted to be clamped with the clamping slot. The clamping member is detachably clamped in the installation slot through the clamping protrusion and the clamping slot.

6. An electric toothbrush, characterized in that: include: A toothbrush head as claimed in any one of claims 1 to 5; as well as, The toothbrush handle is provided with a driving shaft, and the toothbrush head is connected to the driving shaft.

7. The electric toothbrush according to claim 6, characterized in that The driving shaft has a first abutting surface for abutting against the abutting boss, and in the radial direction of the toothbrush head body, the width of the abutting boss is not less than the width of the first abutting surface.

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