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, a clamping piece and a spring. A brush is provided at one end of the toothbrush head body, and a mounting groove is provided at the other end, wherein a spring installation position is provided in the mounting groove. The clamping piece is installed in the mounting groove, and is provided with a clamping groove for clamping the driving shaft, and an opening is provided on one side of the clamping groove corresponding to the spring installation position, and the opening is connected to the clamping groove. The spring is installed on the spring installation position, and is provided with an abutment boss; the abutment boss extends into the clamping groove through the opening, and can elastically abut against 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 to drive the toothbrush head to vibrate. In some existing electric toothbrushes, in order to ensure the connection stability between the toothbrush head and the toothbrush handle, the drive shaft of the toothbrush head and the toothbrush handle are fixedly connected. As a result, 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, a clamping piece and a spring. A brush is provided at one end of the toothbrush head body, and a mounting groove is provided at the other end, and a spring installation position is provided in the mounting groove. The clamping piece is installed in the mounting groove, and is provided with a clamping groove for clamping the driving shaft, and an opening is provided on one side of the clamping groove corresponding to the spring installation position, and the opening is connected to the clamping groove. The spring is installed on the spring installation position, and is provided with an abutment boss; the abutment boss extends into the clamping groove through the opening, and can elastically abut against the driving shaft.

[0006] In one embodiment, the spring piece installation position includes two first limiting ridges extending along the axial direction of the toothbrush head body, and the two first limiting ridges are spaced apart from each other to form a first limiting groove; the spring piece is provided with a first limiting arm, and the first limiting arm is clamped into the first limiting groove along the axial direction of the toothbrush head body.

[0007] In one embodiment, the spring sheet mounting position also includes a second limiting protrusion, the second limiting protrusion has a first limiting surface, and the first limiting surface faces the notch of the mounting groove; the spring sheet is also provided with a second limiting arm, the second limiting arm extends along the radial direction of the toothbrush head body and abuts against the first limiting surface.

[0008] In one embodiment, the clamping member is clamped and installed in the installation groove, and is provided with a second limiting surface facing the first limiting surface, and the second limiting surface is located on a side of the second limiting arm away from the first limiting surface.

[0009] In one embodiment, the first limiting convex strip is integrally formed with the toothbrush head body; and / or the second limiting convex strip is integrally formed with the toothbrush head body.

[0010] Another toothbrush head proposed by the present invention comprises a toothbrush head body, a clamping member and a spring sheet. A brush is provided at one end of the toothbrush head body, and a mounting groove is provided at the other end. The clamping member is installed in the mounting groove, and is provided with a clamping groove for clamping the drive shaft, and a spring sheet mounting position is provided in the clamping groove. The spring sheet is installed on the spring sheet mounting position, and is provided with an abutment boss, and the abutment boss protrudes from the spring sheet to the inside of the clamping groove and can elastically abut against the drive shaft.

[0011] In one embodiment, the clamping member includes a first clamping block and a second clamping block, the first clamping block is formed with the clamping groove and the spring clip mounting position, and the spring clip is clamped and installed in the first clamping block; the second clamping block is installed on one side of the slot of the first clamping block close to the mounting slot, and is provided with a clearance groove connected to the clamping groove, and the clearance groove is used for the drive shaft to pass through and be clamped into the clamping groove.

[0012] In one embodiment, the spring sheet mounting position includes a second limiting groove and a limiting protrusion, the opening of the second limiting groove faces the notch of the mounting groove, and the limiting protrusion extends to the side where the notch of the mounting groove is located; one end of the spring sheet close to the brush is clamped into the second limiting groove along the axial direction of the toothbrush head body, and the other end is bent to form a third limiting groove with the notch facing the limiting protrusion, and the third limiting groove is clamped with the limiting protrusion along the axial direction of the toothbrush head body.

[0013] In one embodiment, a avoidance hole is provided at a position of the first clamping block corresponding to the abutment boss, the avoidance hole is communicated with the clamping groove, and the abutment boss is located between the clamping groove and the opening of the avoidance hole.

[0014] The present invention further provides an electric toothbrush, which comprises a toothbrush head and a toothbrush handle. A driving shaft is installed on the toothbrush handle, and the toothbrush head is connected to the driving shaft.

[0015] The toothbrush head comprises a toothbrush head body, a clamping member and a spring. A brush is provided at one end of the toothbrush head body and a mounting groove is provided at the other end, wherein a spring installation position is provided in the mounting groove. The clamping member is installed in the mounting groove and is provided with a clamping groove for clamping the drive shaft. An opening is provided on one side of the clamping groove corresponding to the spring installation position, and the opening is connected to the clamping groove. The spring is installed on the spring installation position and is provided with an abutment boss; the abutment boss extends into the clamping groove through the opening and can elastically abut against the drive shaft.

[0016] Alternatively, the toothbrush head includes a toothbrush head body, a clamping member and a spring sheet. A brush is provided at one end of the toothbrush head body, and a mounting groove is provided at the other end. The clamping member is installed in the mounting groove, and is provided with a clamping groove for clamping the drive shaft, and a spring sheet mounting position is provided in the clamping groove. The spring sheet is installed on the spring sheet mounting position, and is provided with an abutment boss, which protrudes from the spring sheet to the inside of the clamping groove and can elastically abut against the drive shaft.

[0017] It can be understood that the size of the clamping groove is generally adapted to the size of the drive shaft, because the abutment boss on the spring sheet extends into the interior of the clamping groove. When the drive shaft on the toothbrush handle is inserted into the clamping groove, the drive shaft will squeeze the abutment boss to cause the spring sheet to undergo elastic deformation. After the elastic deformation of the spring sheet, the abutment boss will apply a reverse force to the drive shaft, thereby stably clamping the drive shaft in the clamping groove, ensuring that the toothbrush head body is stably connected to the drive shaft of the toothbrush handle, and avoiding the situation where the toothbrush head is loose or even falls off relative to the drive shaft of the toothbrush handle during use of the electric toothbrush. In addition, when assembling the electric toothbrush of the present invention, it is only necessary to insert the drive shaft on the toothbrush handle into the clamping groove. When it is necessary to remove the toothbrush head from the toothbrush handle, it is only necessary to pull out the drive shaft with force. This not only ensures the stable connection of the toothbrush head on the toothbrush handle, but also facilitates the removal of the toothbrush head from the toothbrush handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a partial structural schematic diagram of an embodiment of an electric toothbrush of the present invention;

[0020] Figure 2 It is a structural schematic diagram of an embodiment of a driving shaft and a motor in an electric toothbrush of the present invention;

[0021] Figure 3 A partial structural cross-sectional view of another embodiment of the electric toothbrush of the present invention;

[0022] Figure 4 It is a partial structural schematic diagram of an embodiment of a toothbrush head of the present invention;

[0023] Figure 5 for Figure 4 A schematic diagram of the structure of the shrapnel in the toothbrush head;

[0024] Figure 6 for Figure 4 A schematic diagram of the structure of a toothbrush head body in a toothbrush head;

[0025] Figure 7 for Figure 4 A schematic diagram of the structure in which the shrapnel in the toothbrush head is installed in the toothbrush head body;

[0026] Figure 8 for Figure 4 A schematic diagram of the structure of a clamping member in a toothbrush head;

[0027] Fig. 9 A partial structural cross-sectional view of another embodiment of an electric toothbrush of the present invention;

[0028] Fig.10 It is a partial structural schematic diagram of another embodiment of a toothbrush head of the present invention;

[0029] Fig.11 for Fig.10 A schematic diagram of the structure of the shrapnel in the toothbrush head;

[0030] Fig.12 for Fig.10 A schematic structural diagram of a first clamping block in a toothbrush head;

[0031] Fig.13 for Fig.10 Schematic diagram of the structure of the spring piece and the clamping part in the toothbrush head.

[0032] Description of Figure Numbers:

[0033] Label name Label name Label name 10 Toothbrush head 34 The second limit slot 50 shrapnel 20 Toothbrush head 35 Limiting bump 51 Abutment boss 21 Mounting slot 40 Card connector 52 The first limiting arm 22 Positioning ribs 41 Card slot 53 Second limiting arm 23 Positioning groove 42 Opening 54 The third limit slot 30 Shrapnel installation position 43 The second limiting surface 60 Drive shaft 31 The first limiting convex strip 44 The first card block 61 Card section 32 The first limit slot 441 Avoidance hole 62 Abutment plane 33 The second limiting convex strip 45 The second card block 70 Motor 331 The first limit surface 451 Give way slot

[0034] 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

[0035] 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.

[0036] 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.

[0037] The present invention provides an electric toothbrush, such as Figure 1 and Figure 2 As shown, the electric toothbrush comprises a toothbrush head 10 and a toothbrush handle (not shown). A drive shaft 60 and a motor 70 for driving the drive shaft 60 to vibrate are mounted on the toothbrush handle. A brush is disposed at one end of the toothbrush head 10, and the other end is connected to the drive shaft 60 on the toothbrush handle, so that the vibration of the drive shaft 60 drives the toothbrush head 10 to vibrate.

[0038] In some existing electric toothbrushes, in order to ensure the connection stability between the toothbrush head 10 and the toothbrush handle, the toothbrush head 10 and the driving shaft 60 of the toothbrush handle are fixedly connected. As a result, 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 provides a toothbrush head 10 to solve the above technical problems.

[0039] In the embodiment of the present invention, Figures 2 to 8 As shown, the toothbrush head 10 includes a toothbrush head body 20, a clamping member 40 and a spring 50. A brush is provided at one end of the toothbrush head body 20, and a mounting groove 21 is provided at the other end. A spring mounting position 30 is provided in the mounting groove 21. Specifically, the toothbrush head body 20 is generally long, and a brush and a mounting groove 21 are provided at both ends along the axial direction thereof. The brush is used to contact the teeth and clean the teeth in a vibrating state. Figure 6 or Figure 7As shown, the mounting groove 21 is formed by the internal hollow setting of the toothbrush head body 20, and there are many ways to set the spring piece mounting position 30 in the mounting groove 21. For example, a limit groove can be set on the inner wall of the mounting groove 21, and the spring piece 50 can be installed in the limit groove. It is also possible to fix a third-party mounting part with the spring piece mounting position 30 into the mounting groove 21, and then when the spring piece 50 needs to be installed, the spring piece 50 can be installed on the third-party mounting part in the mounting groove 21.

[0040] In addition, a positioning structure, an anti-rotation structure, etc. may be provided in the installation slot 21 to facilitate the positioning of the clamping member 40 when it is installed in the installation slot 21 and the stability after installation. Figure 6 and Figure 8 As shown, a positioning groove 23 is provided in the installation groove 21, and a positioning convex strip 22 adapted to the positioning groove 23 is provided outside the clamping member 40. When the clamping member 40 is installed in the installation groove 21, the positioning convex strip 22 is inserted into the installation groove 21 facing the positioning groove 23. In this way, the clamping member 40 can be quickly positioned and the clamping member 40 can be prevented from rotating randomly in the installation groove 21.

[0041] Of course, the positioning ridge 22 can also be provided in the installation groove 21, and the positioning groove 23 can be provided on the outside of the clamping member 40. In order to improve the installation stability of the clamping member 40 in the installation groove 21, in some other embodiments, multiple groups of positioning ridges 22 and positioning grooves 23 are provided.

[0042] In this embodiment, if Figure 4 As shown, the clamping member 40 is installed in the installation groove 21 and is provided with a clamping groove 41 for clamping the drive shaft 60. Figure 2 As shown. The drive shaft 60 on the toothbrush handle is generally processed into a rod-shaped structure with multiple sections, wherein the section at the end is a clamping section 61 processed with an abutting plane 62, so that the drive shaft 60 is in surface contact with the clamping groove 41 through the clamping section 61, thereby stably driving the entire toothbrush head 10 to vibrate. Therefore, the above-mentioned clamping groove 41 refers to a section of the groove that is in surface contact with the clamping section 61 of the drive shaft 60. For example, in this embodiment, Figure 4 As shown, the clamping member 40 is provided with a through groove extending in the axial direction thereof, a section of the through groove close to the end of the clamping member 40 is the clamping groove 41, and the other groove sections connected to the clamping groove 41 are the clearance grooves 451 for the drive shaft 60 to pass through. Therefore, the size, length, shape, etc. of the clamping groove 41 can be set according to the clamping section 61 of the drive shaft 60, and only needs to be able to stably clamp the drive shaft 60.

[0043] In this embodiment, please combine Figure 4 and Figure 8 , an opening 42 is provided on one side of the snap-in slot 41 corresponding to the spring piece installation position 30, and the opening 42 is communicated with the snap-in slot 41. The spring piece 50 is installed on the spring piece installation position 30, and is provided with an abutment boss 51; the abutment boss 51 extends into the snap-in slot 41 through the opening 42, and can elastically abut against the drive shaft 60. Specifically, the snap-in slot 41 is located at the end position of the snap-in component 40, and the opening 42 passes through from the inside of the snap-in slot 41 to the outer periphery of the snap-in component 40. When the snap-in component 40 is installed in the installation slot 21 of the toothbrush head body 20, the spring piece installation position 30 is exactly located at the opening 42, and the abutment boss 51 on the spring piece 50 is even in the snap-in slot 41.

[0044] The abutting protrusion 51 on the spring sheet 50 can be formed by bending the spring sheet 50 itself, for example, the spring sheet 50 is stamped from the surface of the spring sheet 50 away from the clamping groove 41, so that part of the spring sheet 50 protrudes toward the side where the clamping groove 41 is located to form the abutting protrusion 51. Of course, the abutting protrusion 51 can also be formed by making the thickness of a certain part of the spring sheet 50 greater than the thickness of the surrounding part, and the specific thickness can be set according to actual needs.

[0045] In addition, there are many ways to install the spring piece 50 on the spring piece installation position 30. For example, the spring piece 50 can be installed on the spring piece installation position 30 by screwing, bonding, clamping, etc., or it can be injection molded together with the toothbrush head body 20 during the injection molding of the toothbrush head body 20, and then fixed in the installation groove 21 of the toothbrush head body 20.

[0046] It can be understood that the size of the clamping groove 41 is generally adapted to the size of the drive shaft 60, because the abutting boss 51 on the spring sheet 50 extends into the inside of the clamping groove 41, and when the drive shaft 60 on the toothbrush handle is inserted into the clamping groove 41, the drive shaft 60 will squeeze the abutting boss 51 to cause the spring sheet 50 to undergo elastic deformation. After the elastic deformation, the spring sheet 50 will apply a reverse force to the drive shaft 60 through the abutting boss 51, thereby stably clamping the drive shaft 60 in the clamping groove 41. Therefore, during assembly, it is only necessary to insert the drive shaft 60 on the toothbrush handle into the clamping groove 41, and when it is necessary to remove the toothbrush head 10 from the toothbrush handle, it is only necessary to pull out the drive shaft 60 with force. This not only ensures the stable connection of the toothbrush head 10 on the toothbrush handle, but also facilitates the removal of the toothbrush head 10 from the toothbrush handle, effectively solving the technical problem that the toothbrush head 10 is not convenient to be removed from the toothbrush handle in some existing electric toothbrushes.

[0047] In one embodiment, if Figures 5 to 7As shown, the spring piece installation position 30 includes two first limiting ridges 31 extending along the axial direction of the toothbrush head body 20, and the two first limiting ridges 31 are spaced apart from each other to form a first limiting groove 32; the spring piece 50 is provided with a first limiting arm 52, and the first limiting arm 52 is clamped into the first limiting groove 32 along the axial direction of the toothbrush head body 20.

[0048] Specifically, in this embodiment, two first limiting convex strips 31 are convexly provided on the inner surface of the installation groove 21, and the first limiting groove 32 between the two first limiting convex strips 31 is just large enough for the first limiting arm 52 of the spring sheet 50 to be inserted. When the spring sheet 50 needs to be installed, the first limiting arm 52 of the spring sheet 50 is first aligned with the first limiting groove 32, and then the entire spring sheet 50 is inserted into the installation groove 21 along the axial direction of the toothbrush head body 20 until the first limiting arm 52 of the spring sheet 50 is snap-fitted into the first limiting groove 32, and the snap-fitting installation of the spring sheet 50 is completed.

[0049] It can be understood that when the spring piece 50 is installed in the installation groove 21 by snap-fitting, the assembly of the entire toothbrush head 10 is more labor-saving and convenient, which is beneficial to improving the production efficiency of the electric toothbrush.

[0050] In some other embodiments, in order to make the clamping installation of the spring sheet 50 more balanced and stable, two first limiting convex strips 31 are set as one group, and multiple groups of first limiting convex strips 31 are provided in the installation groove 21, that is, multiple first limiting grooves 32 are provided. Multiple first limiting arms 52 are correspondingly provided on the spring sheet 50, and then the multiple first limiting arms 52 can be clamped in the multiple first limiting grooves 32 one by one, thereby improving the installation balance and stability of the spring sheet 50. For example, two first limiting grooves 32 are provided, and the two first limiting grooves 32 are respectively located on both sides of the spring sheet 50; the first limiting arms 52 are respectively provided on the opposite sides of the spring sheet 50, and each first limiting arm 52 is respectively clamped in the corresponding first limiting groove 32. In this way, the installation stability of the spring sheet 50 can be improved, and the complexity of the structure of the spring sheet 50 and the installation groove 21 can be avoided.

[0051] In another embodiment, if Figure 6 As shown, in order to make the structure in the installation groove 21 simpler, the length of one of the two first limiting convex strips 31 is greater than the length of the spring sheet 50, and the portion of the length exceeding the spring sheet 50 is used as the positioning convex strip 22. The clamping member 40 is provided with a positioning groove 23 adapted to the positioning convex strip 22, and the clamping member 40 is positioned by the positioning groove 23 and the positioning convex strip 22 when it is installed. That is, one first limiting convex strip 31 can be used to clamp the spring sheet 50 and the clamping member 40, so there is no need to separately set corresponding convex strips, thereby achieving the purpose of simplifying the internal structure of the installation groove 21.

[0052] In one embodiment, if Figures 5 to 7 As shown, the spring piece installation position 30 also includes a second limiting ridge 33, the second limiting ridge 33 has a first limiting surface 331, and the first limiting surface 331 faces the notch of the installation groove 21; the spring piece 50 is also provided with a second limiting arm 53, and the second limiting arm 53 extends along the radial direction of the toothbrush head body 20 and abuts against the first limiting surface 331.

[0053] It can be understood that in the present embodiment, the spring clip 50 can limit the depth of its own insertion into the mounting groove 21 through the abutment between the second limiting arm 53 and the first limiting surface 331, thereby preventing the spring clip 50 from being inserted too deep or too shallow, thereby ensuring the accurate position of the spring clip 50, and further ensuring that the abutment boss 51 on the spring clip 50 is accurately and effectively abutted against the drive shaft 60.

[0054] Of course, the first limiting surface 331 may not be a strip-shaped limiting strip structure, but may be a block-shaped structure, a step-shaped structure, etc., which may be specifically set according to actual conditions.

[0055] In one embodiment, please combine Figure 4 and Figure 8 The clamping member 40 is clamped and installed in the installation groove 21, and is provided with a second limiting surface 43 facing the first limiting surface 331, and the second limiting surface 43 is located on the side of the second limiting arm 53 away from the first limiting surface 331. Specifically, when assembling the toothbrush head 10, the spring piece 50 is first clamped into the installation groove 21, and then the clamping member 40 is clamped into the installation groove 21. When the clamping member 40 is installed in place, its second limiting surface 43 is in contact with the second limiting arm 53 of the spring piece 50, thereby limiting the spring piece 50 from leaving the installation groove 21, and realizing the positioning of the spring piece 50.

[0056] It can be understood that the spring piece 50 is limited in the installation groove 21 by the clamping member 40, so that the assembly of the toothbrush head 10 is simpler and faster. The spring piece 50 and the clamping member 40 only need to be directly inserted into the installation groove 21 according to a predetermined angle.

[0057] In one embodiment, the first limiting convex strip 31 is integrally formed with the toothbrush head body 20, and the toothbrush head body 20 is provided with a spring piece installation position 30 when it is formed, so that there is no need to add a processing technology for the spring piece installation position 30. In another embodiment, the second limiting convex strip 33 is also integrally formed with the toothbrush head body 20, so as to simplify the production process of the toothbrush head 10 to the maximum extent and improve the production efficiency.

[0058] The present invention further provides another toothbrush head 10 .

[0059] In the embodiment of the present invention, Figures 9 to 13As shown, the toothbrush head 10 includes a toothbrush head body 20, a clamping member 40 and a spring 50. Among them, a brush is provided at one end of the toothbrush head body 20, and a mounting groove 21 is provided at the other end. Specifically, the toothbrush head body 20 is roughly elongated, and a brush and a mounting groove 21 are provided at both ends along its axial direction, respectively. The brush is used to contact the teeth and clean the teeth under vibration. The mounting groove 21 is formed by the internal hollow setting of the toothbrush head body 20, and there are many ways to set the spring installation position 30 in the mounting groove 21. For example, a limiting groove can be set on the inner wall of the mounting groove 21, so that the spring 50 can be installed in the limiting groove. It is also possible to fix a third-party mounting member provided with a spring installation position 30 to the mounting groove 21, and then when the spring 50 needs to be installed, the spring 50 can be installed on the third-party mounting member.

[0060] In addition, a positioning structure, an anti-rotation structure, etc. may be provided in the installation groove 21 to facilitate the positioning of the clip 40 when it is installed in the installation groove 21 and the stability after installation. For example, in some embodiments, a positioning groove 23 is provided in the installation groove 21, and a positioning convex strip 22 adapted to the positioning groove 23 is provided outside the clip 40. When the clip 40 is installed in the installation groove 21, the positioning convex strip 22 is inserted into the installation groove 21 facing the positioning groove 23. In this way, the clip 40 can be quickly positioned and the clip 40 can be prevented from rotating randomly in the installation groove 21.

[0061] Of course, the positioning ridge 22 can also be provided in the installation groove 21, and the positioning groove 23 can be provided on the outside of the clamping member 40. In order to improve the installation stability of the clamping member 40 in the installation groove 21, in some other embodiments, multiple groups of positioning ridges 22 and positioning grooves 23 are provided.

[0062] like Fig.10 As shown, the clamping member 40 is installed in the installation groove 21, and is provided with a clamping groove 41 for clamping the drive shaft 60, and a spring piece installation position 30 is provided in the clamping groove 41. The spring piece 50 is installed on the spring piece installation position 30, and is provided with an abutment boss 51, and the abutment boss 51 protrudes from the spring piece 50 to the inside of the clamping groove 41, and can elastically abut against the drive shaft 60.

[0063] It should be noted that if Figure 2 As shown, the drive shaft 60 on the toothbrush handle is generally processed into a rod-shaped structure with multiple sections, wherein the section at the end is a clamping section 61 processed with an abutting plane 62, so that the drive shaft 60 is in surface contact with the clamping groove 41 through the clamping section 61, thereby stably driving the entire toothbrush head 10 to vibrate. Therefore, the above-mentioned clamping groove 41 refers to a section of the groove that is in surface contact with the clamping section 61 of the drive shaft 60. For example, in this embodiment, Fig.10 As shown, the clamping member 40 is provided with a through groove extending in the axial direction thereof, a section of the through groove close to the end of the clamping member 40 is the clamping groove 41, and the other groove sections connected to the clamping groove 41 are the clearance grooves 451 for the drive shaft 60 to pass through. Therefore, the size, length, shape, etc. of the clamping groove 41 can be set according to the clamping section 61 of the drive shaft 60, and only needs to be able to stably clamp the drive shaft 60.

[0064] In this embodiment, the spring piece installation position 30 is set in the clamping groove 41, and then when the spring piece 50 is installed on the spring piece installation position 30, the abutting boss 51 on the spring piece 50 can protrude into the inside of the clamping groove 41. When the drive shaft 60 on the toothbrush handle is inserted into the clamping groove 41, the drive shaft 60 will squeeze the abutting boss 51 to cause the spring piece 50 to elastically deform. After the elastic deformation, the spring piece 50 will apply a reverse force to the drive shaft 60 through the abutting boss 51, and then the drive shaft 60 is stably clamped in the clamping groove 41. Therefore, when assembling, it is only necessary to insert the drive shaft 60 on the toothbrush handle into the clamping groove 41. When it is necessary to remove the toothbrush head 10 from the toothbrush handle, it is only necessary to pull out the drive shaft 60 with force. It not only ensures the stable connection of the toothbrush head 10 on the toothbrush handle, but also facilitates the removal of the toothbrush head 10 from the toothbrush handle, effectively solving the technical problem that the toothbrush head 10 is not easy to remove from the toothbrush handle in some existing electric toothbrushes.

[0065] In addition, there are many ways to install the spring piece 50 in the clamping groove 41. For example, an inlet and outlet communicating with the spring piece installation position 30 can be provided at the end or outer surface of the clamping member 40, and the spring piece 50 can be installed on the spring piece installation position 30 in the clamping groove 41 through the inlet and outlet. Alternatively, the spring piece 50 can be used as an insert and injection molded together with the clamping member 40 during the injection molding of the clamping member 40, so that the installation of the spring piece 50 is more stable.

[0066] There are many ways to fix the spring piece 50 on the spring piece installation position 30. For example, the spring piece 50 can be installed on the spring piece installation position 30 by screwing, bonding, clamping, etc.

[0067] The abutting protrusion 51 on the spring sheet 50 can be formed by bending the spring sheet 50 itself, for example, the spring sheet 50 is stamped from the surface of the spring sheet 50 away from the clamping groove 41, so that part of the spring sheet 50 protrudes toward the side where the clamping groove 41 is located to form the abutting protrusion 51. Of course, the abutting protrusion 51 can also be formed by making the thickness of a certain part of the spring sheet 50 greater than the thickness of the surrounding part, and the specific thickness can be set according to actual needs.

[0068] In one embodiment, please combine Figures 10 to 13In order to make it more convenient for the spring sheet 50 to be installed in the clamping slot 41, the clamping member 40 includes a first clamping block 44 and a second clamping block 45. The clamping slot 41 and the spring sheet mounting position 30 are formed in the first clamping block 44, and the spring sheet 50 is clamped and installed in the first clamping block 44; the second clamping block 45 is installed on one side of the notch of the first clamping block 44 close to the mounting slot 21, and is provided with a clearance groove 451 connected to the clamping slot 41, and the clearance groove 451 is used for the drive shaft 60 to pass through and be clamped into the clamping slot 41.

[0069] Specifically, in this embodiment, when assembling the toothbrush head 10, the spring piece 50 can be firstly mounted on the first clamping block 44, and then the first clamping block 44 with the spring piece 50 mounted thereon can be mounted into the mounting groove 21 of the toothbrush head body 20 (of course, the first clamping block 44 can also be firstly mounted into the mounting groove 21 of the toothbrush head body 20, and then the spring piece 50 can be clamped onto the mounted first clamping block 44). Then the second clamping block 45 can be mounted into the clamping groove 41, and the assembly of the entire toothbrush head 10 is completed, which is very simple and convenient.

[0070] It can be understood that after the clamping member 40 is split into the first clamping block 44 and the second clamping block 45, the spring piece 50 can be clamped into the clamping groove 41 from the end of the first clamping block 44 close to the second clamping block 45, and then the spring piece 50 is limited by the second clamping block 45 to prevent the spring piece 50 from being separated from the clamping groove 41. Compared with the case where the clamping member 40 is a whole piece, the first clamping block 44 and the second clamping block 45 greatly facilitate the installation of the spring piece 50.

[0071] In one embodiment, if Fig.12 and Fig.13 As shown, the spring piece installation position 30 includes a second limiting groove 34 and a limiting protrusion 35, the opening 42 of the second limiting groove 34 faces the notch of the installation groove 21, and the limiting protrusion 35 extends to the side where the notch of the installation groove 21 is located; one end of the spring piece 50 close to the brush is clamped into the second limiting groove 34 along the axial direction of the toothbrush head body 20, and the other end is bent to form a third limiting groove 54 with the notch facing the limiting protrusion 35, and the third limiting groove 54 is clamped with the limiting protrusion 35 along the axial direction of the toothbrush head body 20.

[0072] In this embodiment, the second limiting groove 34 is opened at one end of the first clamping block 44 away from the second clamping block 45, and its size is adapted to the end of the spring piece 50. When the end of the spring piece 50 is inserted into the second limiting groove 34, the surface of the end just abuts against the wall of the second limiting groove 34 to prevent the spring piece 50 from shaking back and forth or left and right.

[0073] The limiting protrusion 35 is clamped in the third limiting groove 54, which can prevent the spring sheet 50 from being inserted too deep or too shallow, ensure the accurate position of the spring sheet 50, and further ensure that the abutting boss 51 on the spring sheet 50 is accurately and effectively abutted against the drive shaft 60. It can also cooperate with the other end of the spring sheet 50 to position the spring sheet 50 and prevent the spring sheet 50 from shaking.

[0074] In one embodiment, if Fig.12 or Fig.13 As shown, the first clamping block 44 is provided with an avoidance hole 441 at a position corresponding to the abutment boss 51, the avoidance hole 441 is communicated with the clamping groove 41, and the abutment boss 51 is located between the clamping groove 41 and the opening of the avoidance hole 441. In this embodiment, the size of the avoidance hole 441 is similar to that of the abutment boss 51, and can be slightly larger than the size of the abutment boss 51, and the abutment boss 51 is located at the opening of the avoidance hole 441 close to the clamping groove 41. Such a setting can avoid the situation where the inner wall surface of the clamping groove 41 hinders the deformation of the abutment boss 51. When the drive shaft 60 squeezes the abutment boss 51, the abutment boss 51 can deform to the side where the avoidance hole 441 is located, thereby smoothly generating elastic force and acting in the opposite direction on the drive shaft 60.

[0075] The present invention further provides an electric toothbrush, which includes a toothbrush head 10 and a toothbrush handle, wherein the toothbrush handle is provided with a drive shaft 60, and the toothbrush head 10 is installed on the drive shaft 60. 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.

[0076] 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: The toothbrush head body has a brush at one end and a mounting groove at the other end, wherein a spring piece mounting position is provided in the mounting groove; A clamping member is installed in the installation slot and is provided with a clamping slot for clamping the drive shaft, and an opening is provided on a side of the clamping slot corresponding to the spring piece installation position, and the opening is communicated with the clamping slot; and, A spring sheet is installed on the spring sheet installation position and is provided with an abutment boss; the abutment boss extends into the clamping groove through the opening and can elastically abut against the drive shaft; The spring piece installation position comprises two first limiting convex strips extending along the axial direction of the toothbrush head body, and the two first limiting convex strips are spaced and opposite to each other to form a first limiting groove; The spring piece is provided with a first limiting arm, and the first limiting arm is clamped into the first limiting groove along the axial direction of the toothbrush head body; The spring piece installation position further includes a second limiting convex strip, the second limiting convex strip has a first limiting surface, and the first limiting surface faces the notch of the installation slot; The spring piece is further provided with a second limiting arm, which extends along the radial direction of the toothbrush head body and abuts against the first limiting surface; The clamping member is clamped and installed in the installation groove, and is provided with a second limiting surface facing the first limiting surface, and the second limiting surface is located on a side of the second limiting arm away from the first limiting surface.

2. The toothbrush head according to claim 1, characterized in that The first limiting convex strip is integrally formed with the toothbrush head body; and / or the second limiting convex strip is integrally formed with the toothbrush head body.

3. 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, with a brush at one end and a mounting slot at the other end; A clamping member is installed in the installation slot and is provided with a clamping slot for clamping the drive shaft, wherein a spring piece installation position is provided in the clamping slot; and, A spring sheet is installed on the spring sheet installation position and is provided with an abutment boss, the abutment boss protrudes from the spring sheet toward the inside of the clamping groove and can elastically abut against the drive shaft; The clamping member comprises a first clamping block and a second clamping block, the clamping groove and the spring piece installation position are formed in the first clamping block, and the spring piece is clamped and installed in the first clamping block; The second clamping block is installed on one side of the first clamping block close to the slot of the installation slot, and is provided with a clearance slot communicated with the clamping slot, the clearance slot is used for the drive shaft to pass through and be clamped into the clamping slot; The spring piece installation position comprises a second limiting groove and a limiting protrusion, the opening of the second limiting groove faces the notch of the installation groove, and the limiting protrusion extends to the side where the notch of the installation groove is located; One end of the spring sheet close to the brush is clamped into the second limiting groove along the axial direction of the toothbrush head body, and the other end is bent to form a third limiting groove with a notch facing the limiting protrusion, and the third limiting groove is clamped with the limiting protrusion along the axial direction of the toothbrush head body.

4. The toothbrush head according to claim 3, characterized in that: The first clamping block is provided with an avoidance hole at a position corresponding to the abutting boss, the avoidance hole is communicated with the clamping groove, and the abutting boss is located between the clamping groove and the opening of the avoidance hole.

5. An electric toothbrush, characterized in that: include: A toothbrush head as claimed in any one of claims 1 to 4; as well as, The toothbrush handle is provided with a driving shaft, and the toothbrush head is connected to the driving shaft.

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