CN215192496U

CN215192496U - Toothbrush head and electric toothbrush

Info

Publication number: CN215192496U
Application number: CN202120794188.7U
Authority: CN
Inventors: 何明峰; 何华杰; 袁帅; 刘青云
Original assignee: Shenzhen Baolijie Technology Co Ltd
Current assignee: Shenzhen Baolijie Technology Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-12-17
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses a toothbrush head and electric toothbrush, wherein, this toothbrush head is used for connecting in the drive shaft of toothbrush handle to including toothbrush head body, joint spare and shell fragment. One end of the toothbrush head body is provided with a brush, the other end of the toothbrush head body is provided with a mounting groove, and a spring piece mounting position is arranged in the mounting groove. The joint spare install in the mounting groove to be equipped with and be used for the joint groove of drive shaft, the joint groove corresponds one side of shell fragment installation position is equipped with the opening, the opening with joint groove intercommunication. The elastic sheet is arranged on the elastic sheet mounting position and is provided with a butting boss; the butt boss passes through the opening stretches into in the joint inslot, and can with drive shaft elasticity butt. The utility model discloses in some electric toothbrush that the toothbrush head can solve current, the toothbrush head is not convenient for follow the technical problem that the toothbrush handle pulled down.

Description

Toothbrush head and electric toothbrush

Technical Field

The utility model relates to an electric toothbrush technical field, in particular to toothbrush head and electric toothbrush.

Background

The electric toothbrush generally comprises a toothbrush head and a toothbrush handle, wherein a driving shaft and a motor for driving the driving shaft to vibrate are arranged on the toothbrush handle, and the driving shaft is connected with the toothbrush head so as to drive the toothbrush head to vibrate. In some existing electric toothbrushes, in order to ensure the stability of the connection between the toothbrush head and the toothbrush handle, the drive shaft of the toothbrush head and the toothbrush handle are fixedly connected. Resulting in inconvenience of removal for replacement or maintenance when one of the toothbrush head and the toothbrush handle is damaged.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a toothbrush head, which aims at solving the technical problem that the toothbrush head is not convenient to detach from a toothbrush handle in some existing electric toothbrushes.

In order to achieve the above purpose, the utility model provides a toothbrush head is used for connecting in the drive shaft of toothbrush handle to including toothbrush head body, joint spare and shell fragment. One end of the toothbrush head body is provided with a brush, the other end of the toothbrush head body is provided with a mounting groove, and a spring piece mounting position is arranged in the mounting groove. The joint spare install in the mounting groove to be equipped with and be used for the joint groove of drive shaft, the joint groove corresponds one side of shell fragment installation position is equipped with the opening, the opening with joint groove intercommunication. The elastic sheet is arranged on the elastic sheet mounting position and is provided with a butting boss; the butt boss passes through the opening stretches into in the joint inslot, and can with drive shaft elasticity butt.

In one embodiment, the elastic sheet mounting 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 oppositely arranged at intervals to form a first limiting groove; the shell fragment is equipped with first spacing arm, first spacing arm is followed the axial direction joint of toothbrush head body extremely first spacing inslot.

In one embodiment, the spring plate mounting position further comprises a second limiting convex strip, the second limiting convex strip is provided with a first limiting surface, and the first limiting surface faces the notch of the mounting groove; the shell fragment still is equipped with the spacing arm of second, the spacing arm of second is followed the radial direction of toothbrush head body extends to the butt is in on the first spacing face.

In an embodiment, the clamping piece is clamped and installed in the installation groove and provided with a second limiting surface facing the first limiting surface, and the second limiting surface is located on one side of the second limiting arm departing from the first limiting surface.

In one embodiment, the first limiting convex strip is integrally formed with the toothbrush head body; and/or the second limit protruding strip and the toothbrush head body are integrally formed.

The utility model provides another toothbrush head which comprises a toothbrush head body, a clamping piece and a spring piece. One end of the toothbrush head body is provided with a brush, and the other end of the toothbrush head body is provided with an installation groove. The joint spare install in the mounting groove to be equipped with and be used for the joint groove of drive shaft, the joint inslot is equipped with shell fragment installation position. The elastic sheet is arranged on the elastic sheet mounting position and is provided with a butt boss, and the butt boss protrudes from the elastic sheet to the inside of the clamping groove and can be elastically abutted against the driving shaft.

In an 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 elastic sheet mounting position therein, and the elastic sheet is clamped and mounted in the first clamping block; the second joint piece install in first joint piece is close to one side of the notch of mounting groove to be equipped with the groove of stepping down of joint groove intercommunication, the groove of stepping down is used for supplying the drive shaft passes and the joint extremely the joint inslot.

In one embodiment, the elastic sheet mounting position comprises a second limiting groove and a limiting lug, an opening of the second limiting groove faces to the notch of the mounting groove, and the limiting lug extends to one side of the notch of the mounting groove; the shell fragment is close to the one end of brush is followed the axial direction joint of toothbrush head body connects to in the second spacing inslot, the other end is to bend and sets up and form the notch orientation the third spacing groove of spacing lug, the third spacing groove is followed the axial direction of toothbrush head body with spacing lug looks joint.

In an embodiment, 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 avoidance hole orifice.

The utility model discloses still provide an electric toothbrush, this electric toothbrush includes toothbrush head and toothbrush handle, install the drive shaft on the toothbrush handle, the toothbrush head connect in the drive shaft.

Wherein, toothbrush head includes toothbrush head body, joint spare and shell fragment. One end of the toothbrush head body is provided with a brush, the other end of the toothbrush head body is provided with a mounting groove, and a spring piece mounting position is arranged in the mounting groove. The joint spare install in the mounting groove to be equipped with and be used for the joint groove of drive shaft, the joint groove corresponds one side of shell fragment installation position is equipped with the opening, the opening with joint groove intercommunication. The elastic sheet is arranged on the elastic sheet mounting position and is provided with a butting boss; the butt boss passes through the opening stretches into in the joint inslot, and can with drive shaft elasticity butt.

Or the toothbrush head comprises a toothbrush head body, a clamping piece and an elastic piece. One end of the toothbrush head body is provided with a brush, and the other end of the toothbrush head body is provided with an installation groove. The joint spare install in the mounting groove to be equipped with and be used for the joint groove of drive shaft, the joint inslot is equipped with shell fragment installation position. The elastic sheet is arranged on the elastic sheet mounting position and is provided with a butt boss, and the butt boss protrudes from the elastic sheet to the inside of the clamping groove and can be elastically abutted against the driving shaft.

It can be understood that the size in joint groove generally sets up with the big or small adaptation of drive shaft, because the inside in joint groove is stretched into to the butt boss on the shell fragment, when the drive shaft on the toothbrush handle inserted the joint groove, the drive shaft can extrude the butt boss and make the shell fragment take place elastic deformation. Can apply reverse effort to the drive shaft through the butt boss behind the shell fragment elastic deformation, and then with the stable joint of drive shaft in the joint inslot, ensure the stable connection of toothbrush head body in the drive shaft of toothbrush handle, avoid the condition that its toothbrush head of electric toothbrush is not hard up or drops even in the drive shaft of the relative toothbrush handle of in-process of using. And the utility model discloses electric toothbrush only need when the equipment with the drive shaft on the toothbrush handle insert the joint groove can, when needs pull down the toothbrush head from the toothbrush handle, also only need extract the drive shaft hard can. Not only ensures the stable connection of the toothbrush head on the toothbrush handle, but also is convenient for detaching the toothbrush head from the toothbrush handle.

Drawings

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

FIG. 1 is a schematic view of a portion of an embodiment of the present invention;

FIG. 2 is a schematic structural view of an embodiment of a driving shaft and a motor of the electric toothbrush of the present invention;

FIG. 3 is a sectional view of a portion of another embodiment of the electric toothbrush of the present invention;

FIG. 4 is a schematic view of a portion of an embodiment of a toothbrush head of the present invention;

FIG. 5 is a schematic view of the structure of the resilient tab in the toothbrush head of FIG. 4;

figure 6 is a schematic view of the construction of the toothbrush head body in the toothbrush head of figure 4;

figure 7 is a schematic view of the toothbrush head of figure 4 with the resilient tab mounted in the body of the toothbrush head;

figure 8 is a schematic view of the structure of the snap in the toothbrush head of figure 4;

FIG. 9 is a sectional view of a portion of another embodiment of the electric toothbrush of the present invention;

figure 10 is a schematic view of a portion of another embodiment of a toothbrush head of the present invention;

figure 11 is a schematic view of the structure of the resilient tab in the toothbrush head of figure 10;

figure 12 is a schematic view of a first snap-in block in the toothbrush head of figure 10;

fig. 13 is a schematic view of the structure of the spring and the snap in the toothbrush head of fig. 10.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						10	Toothbrush head	34	Second limit groove	50	Spring plate
20	Toothbrush head body	35	Spacing lug	51	Abutting lug boss
						21	Mounting groove	40	Clamping piece	52	First limiting arm
22	Positioning convex strip	41	Clamping groove	53	Second limiting arm
						23	Positioning groove	42	Opening of the container	54	Third limit groove
30	Elastic sheet mounting position	43	Second limit surface	60	Drive shaft
						31	First limit convex strip	44	First clamping block	61	Clamping section
32	First limit groove	441	Avoiding hole	62	Abutting plane
						33	Second limit convex strip	45	Second clamping block	70	Electric machine
331	A first limit surface	451	Abdicating groove

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides an electric toothbrush, as shown in fig. 1 and 2, which includes a toothbrush head 10 and a toothbrush handle (not shown). The toothbrush handle is provided with a driving shaft 60 and a motor 70 for driving the driving shaft 60 to vibrate, one end of the toothbrush head 10 is provided with a brush, and the other end of the toothbrush head is connected with the driving shaft 60 on the toothbrush handle, so that the toothbrush head 10 is driven to vibrate by the vibration of the driving shaft 60.

In some conventional electric toothbrushes, in order to secure the stability of the coupling between the brush head 10 and the toothbrush handle, the brush head 10 and the driving shaft 60 of the toothbrush handle are fixedly coupled. Resulting in inconvenience of removal for replacement or maintenance when one of the brush head 10 and the brush handle is damaged. Therefore, the present invention provides a toothbrush head 10 to solve the above technical problems.

In the embodiment of the present invention, as shown in fig. 2 to 8, the toothbrush head 10 includes a toothbrush head body 20, a clip member 40 and a resilient piece 50. Wherein, the one end of toothbrush head body 20 is equipped with the brush, and the other end is equipped with mounting groove 21, be equipped with shell fragment installation position 30 in the mounting groove 21. Specifically, the toothbrush head body 20 is substantially long-shaped, and both ends in the axial direction thereof are respectively provided with a brush for contacting with teeth and cleaning the teeth in a vibration state and a mounting groove 21. As shown in fig. 6 or 7, the mounting groove 21 is formed by hollowing the inside of the toothbrush head body 20, and there are various ways of disposing the elastic piece mounting position 30 in the mounting groove 21. For example, a limit groove may be formed on an inner wall of the mounting groove 21, and the elastic piece 50 may be mounted in the limit groove. Also can be through being equipped with the third party installed part of shell fragment installation position 30 fixed to mounting groove 21 in, when needing the installation shell fragment 50 again, with the shell fragment 50 install to the mounting groove 21 in the third party installed part on can.

In addition, a positioning structure, an anti-rotation structure and the like can be further arranged in the mounting groove 21, so that the clamping piece 40 can be conveniently positioned when being mounted in the mounting groove 21 and can be conveniently and stably mounted. For example, in some embodiments, as shown in fig. 6 and 8, a positioning groove 23 is provided in the mounting groove 21, a positioning rib 22 adapted to the positioning groove 23 is provided outside the snap-in element 40, and the snap-in element 40 is inserted into the mounting groove 21 opposite to the positioning groove 23 when being mounted into the mounting groove 21. So can enough quick location joint spare 40, can avoid joint spare 40 to rotate at will in mounting groove 21 again.

Of course, it is also possible to provide the positioning protruding strip 22 in the mounting groove 21 and provide the adaptive positioning groove 23 outside the clamping member 40, which is not limited herein. In order to improve the installation stability of the clip 40 in the installation groove 21, in other embodiments, a plurality of sets of the positioning protruding strips 22 and the positioning grooves 23 are provided.

In this embodiment, as shown in fig. 4, the clamping member 40 is installed in the installation groove 21 and is provided with a clamping groove 41 for clamping the driving shaft 60. Fig. 2 shows the structure. The driving shaft 60 on the toothbrush handle is generally processed into a rod-shaped structure with multiple sections, wherein one section at the end is a clamping section 61 processed with an abutting plane 62, so that the driving shaft 60 is in surface contact with the clamping groove 41 through the clamping section 61, and the whole toothbrush head 10 is stably driven to vibrate. The above-mentioned catching groove 41 thus refers to a section of the groove which makes surface contact with the catching section 61 of the drive shaft 60. For example, in the present embodiment, as shown in fig. 4, a through groove extending along the axial direction of the snap member 40 is provided inside the snap member 40, a section of the through groove near the end of the snap member 40 is the snap groove 41, and the other groove section communicating with the snap groove 41 is the relief groove 451 for the driving shaft 60 to pass through. Therefore, the size, length, shape, etc. of the catching groove 41 may be set according to the catching section 61 of the driving shaft 60, only to stably catch the driving shaft 60.

In this embodiment, please refer to fig. 4 and 8, an opening 42 is disposed at a side of the clip groove 41 corresponding to the elastic piece mounting position 30, and the opening 42 is communicated with the clip groove 41. The elastic sheet 50 is arranged on the elastic sheet mounting position 30 and is provided with a butting boss 51; the abutment boss 51 extends into the engagement groove 41 through the opening 42, and can be elastically abutted against the drive shaft 60. Specifically, the engaging groove 41 is located at an end portion of the engaging member 40, and the opening 42 penetrates from the inside of the engaging groove 41 to the outer periphery of the engaging member 40. When the clip member 40 is mounted in the mounting groove 21 of the toothbrush head body 20, the spring mounting position 30 is located at the opening 42, and the abutting boss 51 on the spring 50 is even in the clip groove 41.

The abutting projection 51 on the elastic sheet 50 may be formed by bending the elastic sheet 50 itself, for example, stamping the elastic sheet 50 from a surface of the elastic sheet 50 away from the catching groove 41, so that the elastic sheet 50 partially protrudes to a side where the catching groove 41 is located to form the abutting projection 51. Of course, the abutting projection 51 may be formed by making a thickness of a part of the elastic piece 50 larger than the surrounding thickness, and the specific configuration may be set as required.

In addition, the installation mode of the elastic sheet 50 on the elastic sheet installation position 30 can be various, for example, the elastic sheet 50 can be installed on the elastic sheet installation position 30 through the modes of screw connection, bonding, clamping and the like, and can also be injected with the toothbrush head body 20 during the injection molding of the toothbrush head body 20, and then be fixed in the installation groove 21 of the toothbrush head body 20.

It can be understood that the size of the latch groove 41 is generally matched with the size of the driving shaft 60, because the abutting boss 51 on the elastic sheet 50 extends into the latch groove 41, when the driving shaft 60 on the toothbrush handle is inserted into the latch groove 41, the driving shaft 60 can extrude the abutting boss 51 to make the elastic sheet 50 elastically deform. The elastic sheet 50 elastically deforms and then exerts a reverse acting force on the driving shaft 60 through the abutting boss 51, so that the driving shaft 60 is stably clamped in the clamping groove 41. Therefore, the drive shaft 60 of the toothbrush handle is inserted into the engaging groove 41 during assembly, and the drive shaft 60 is forcibly pulled out when the toothbrush head 10 is detached from the toothbrush handle. Not only ensures the stable connection of the toothbrush head 10 on the toothbrush handle, but also is convenient to detach the toothbrush head 10 from the toothbrush handle, thereby effectively solving the technical problem that the toothbrush head 10 is inconvenient to detach from the toothbrush handle in some existing electric toothbrushes.

In one embodiment, as shown in fig. 5 to 7, the resilient piece mounting portion 30 includes two first limiting ribs 31 extending along the axial direction of the toothbrush head body 20, and the two first limiting ribs 31 are spaced and opposed to each other to form a first limiting groove 32; the elastic sheet 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.

Specifically, in the present embodiment, the two first limiting convex strips 31 are convexly disposed on the inner surface of the mounting groove 21, and the first limiting groove 32 between the two first limiting convex strips 31 is just enough for the first limiting arm 52 of the elastic sheet 50 to be inserted. When the elastic sheet 50 needs to be installed, the first limiting arm 52 of the elastic sheet 50 is aligned to the first limiting groove 32, and then the whole elastic 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 elastic sheet 50 is clamped in the first limiting groove 32, so that the clamping installation of the elastic sheet 50 is completed.

It can be understood that when the elastic sheet 50 is mounted in the mounting groove 21 in a clamping manner, the whole toothbrush head 10 is more labor-saving and convenient to assemble, and the production efficiency of the electric toothbrush is further improved.

In other embodiments, in order to make the clamping installation of the elastic sheet 50 more balanced and stable, two first limiting convex strips 31 are used as one set, and a plurality of sets of first limiting convex strips 31, i.e. a plurality of first limiting grooves 32, are disposed in the installation groove 21. The corresponding a plurality of first spacing arms 52 that set up on shell fragment 50, and then the joint that a plurality of first spacing arms 52 can the one-to-one improves shell fragment 50's installation equilibrium and stability in a plurality of first spacing inslots 32. For example, two first limiting grooves 32 are provided, and the two first limiting grooves 32 are respectively located at two sides of the elastic sheet 50; the two opposite sides of the elastic sheet 50 are respectively provided with the first limiting arms 52, and each first limiting arm 52 is respectively clamped in the corresponding first limiting groove 32. So can improve shell fragment 50's installation stability, can also avoid the structure in shell fragment 50 and the mounting groove 21 to complicate.

In another embodiment, as shown in fig. 6, in order to simplify the structure of the mounting groove 21, one of the two first limiting ribs 31 is longer than the elastic piece 50, and the portion of the length exceeding the elastic piece 50 is used as the positioning rib 22. The joint member 40 is externally provided with a positioning groove 23 matched with the positioning convex strip 22, and the joint member 40 is positioned through the positioning groove 23 and the positioning convex strip 22 when being installed. Also, a first limiting convex strip 31 can be used for the clamping elastic piece 50 and the clamping piece 40, so that the corresponding convex strips do not need to be separately arranged, and the purpose of simplifying the internal structure of the mounting groove 21 is achieved.

In an embodiment, as shown in fig. 5 to 7, the elastic piece mounting position 30 further includes a second limiting convex strip 33, the second limiting convex strip 33 has a first limiting surface 331, and the first limiting surface 331 faces the notch of the mounting groove 21; the elastic sheet 50 is further 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.

It can be understood that, in this embodiment, the elastic sheet 50 can limit the depth of the installation groove 21 by the abutting of the second limiting arm 53 and the first limiting surface 331, so as to avoid the too deep or too shallow depth of the installation of the elastic sheet 50, ensure the position accuracy of the elastic sheet 50, and further ensure the accurate and effective abutting of the abutting boss 51 on the elastic sheet 50 with the driving shaft 60.

Of course, the first limiting surface 331 may be a limiting strip structure, a block structure, a step structure, or the like, which is not a strip structure, and may be set according to actual conditions.

In an embodiment, please refer to fig. 4 and 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 a side of the second limiting arm 53 departing from the first limiting surface 331. Specifically, when assembling the toothbrush head 10, the elastic sheet 50 is firstly clamped in the mounting groove 21, and then the clamping piece 40 is clamped in the mounting groove 21. When the clip member 40 is mounted in place, the second limiting surface 43 of the clip member abuts against the second limiting arm 53 of the elastic piece 50, so as to limit the elastic piece 50 to be separated from the mounting groove 21, and the positioning of the elastic piece 50 is realized.

It can be understood that the elastic sheet 50 is limited in the mounting groove 21 by the clamping member 40, so that the assembly of the toothbrush head 10 is simpler and faster, and the elastic sheet 50 and the clamping member 40 only need to be directly inserted into the mounting groove 21 according to a preset angle.

In an embodiment, the first limiting protruding strip 31 and the toothbrush head body 20 are integrally formed, and then the toothbrush head body 20 is provided with the elastic piece mounting position 30 during forming, so that the processing technology of the other elastic piece mounting position 30 is not required to be added. In another embodiment, the second limiting protrusion 33 is also integrally formed with the toothbrush head body 20, so that the production process of the toothbrush head 10 is simplified to the maximum extent, and the production efficiency is improved.

The utility model also provides another toothbrush head 10.

In the embodiment of the present invention, as shown in fig. 9 to 13, the toothbrush head 10 comprises a toothbrush head body 20, a clip member 40 and a resilient piece 50. Wherein, toothbrush head body 20's one end is equipped with the brush, and the other end is equipped with mounting groove 21, particularly, toothbrush head body 20 roughly is microscler setting to both ends along its axial direction are provided with brush and mounting groove 21 respectively, and the brush is used for contacting with the tooth, and cleans the tooth under the vibration state. This mounting groove 21 is formed by the inside cavity setting of toothbrush head body 20, and there are a plurality of modes of setting up shell fragment installation position 30 in mounting groove 21. For example, a limit groove may be formed on an inner wall of the mounting groove 21, and the elastic piece 50 may be mounted in the limit groove. Also can be through being equipped with the third party installed part of shell fragment installation position 30 fixed to mounting groove 21 in, when needing the installation shell fragment 50 again, can on installing this third party installed part with shell fragment 50.

In addition, a positioning structure, an anti-rotation structure and the like can be further arranged in the mounting groove 21, so that the clamping piece 40 can be conveniently positioned when being mounted in the mounting groove 21 and can be conveniently and stably mounted. For example, in some embodiments, a positioning groove 23 is provided in the mounting groove 21, a positioning rib 22 adapted to the positioning groove 23 is provided outside the clip member 40, and the clip member 40 is inserted into the mounting groove 21 with the positioning rib 22 facing the positioning groove 23 when being mounted into the mounting groove 21. So can enough quick location joint spare 40, can avoid joint spare 40 to rotate at will in mounting groove 21 again.

As shown in fig. 10, the clamping member 40 is installed in the installation groove 21, and is provided with a clamping groove 41 for clamping the driving shaft 60, and an elastic piece installation position 30 is arranged in the clamping groove 41. The elastic sheet 50 is mounted on the elastic sheet mounting position 30 and is provided with a butting boss 51, and the butting boss 51 protrudes from the elastic sheet 50 to the inside of the clamping groove 41 and can be elastically butted against the driving shaft 60.

It should be noted that, as shown in fig. 2, the driving shaft 60 on the toothbrush handle is generally formed into a rod-shaped structure with multiple sections, wherein one section at the end is a clamping section 61 formed with an abutting plane 62, so that the driving shaft 60 is in surface contact with the clamping groove 41 through the clamping section 61, and the whole toothbrush head 10 is further stably driven to vibrate. The above-mentioned catching groove 41 thus refers to a section of the groove which makes surface contact with the catching section 61 of the drive shaft 60. For example, in the present embodiment, as shown in fig. 10, a through groove extending in the axial direction of the snap member 40 is provided inside the snap member 40, a section of the through groove near the end of the snap member 40 is the snap groove 41, and the other groove section communicating with the snap groove 41 is the relief groove 451 for the driving shaft 60 to pass through. Therefore, the size, length, shape, etc. of the catching groove 41 may be set according to the catching section 61 of the driving shaft 60, only to stably catch the driving shaft 60.

In this embodiment, the elastic piece mounting portion 30 is disposed in the engaging groove 41, and when the elastic piece 50 is mounted on the elastic piece mounting portion 30, the abutting projection 51 on the elastic piece 50 can protrude toward the engaging groove 41. When the driving shaft 60 of the toothbrush handle is inserted into the locking groove 41, the driving shaft 60 presses the abutting boss 51 to elastically deform the elastic piece 50. The elastic sheet 50 elastically deforms and then exerts a reverse acting force on the driving shaft 60 through the abutting boss 51, so that the driving shaft 60 is stably clamped in the clamping groove 41. Therefore, the drive shaft 60 of the toothbrush handle is inserted into the engaging groove 41 during assembly, and the drive shaft 60 is forcibly pulled out when the toothbrush head 10 is detached from the toothbrush handle. Not only ensures the stable connection of the toothbrush head 10 on the toothbrush handle, but also is convenient to detach the toothbrush head 10 from the toothbrush handle, thereby effectively solving the technical problem that the toothbrush head 10 is inconvenient to detach from the toothbrush handle in some existing electric toothbrushes.

In addition, there are various ways for the elastic sheet 50 to be installed in the engaging groove 41, for example, an entrance communicating with the elastic sheet installation position 30 may be provided at an end portion, an outer surface, etc. of the engaging member 40, and the elastic sheet 50 may be installed on the elastic sheet installation position 30 in the engaging groove 41 from the entrance. Or the elastic sheet 50 can be used as an insert to be injection molded together with the clamping piece 40 when the clamping piece 40 is injection molded, so that the installation of the elastic sheet 50 is more stable.

The fixing manner of the elastic sheet 50 on the elastic sheet mounting position 30 may be various, for example, the elastic sheet 50 may be mounted on the elastic sheet mounting position 30 by means of screw connection, adhesion, clamping, etc.

In an embodiment, please refer to fig. 10 to 13, in order to enable the elastic sheet 50 to be more conveniently installed in the clamping groove 41, the clamping member 40 includes a first clamping block 44 and a second clamping block 45, the clamping groove 41 and the elastic sheet installation position 30 are formed in the first clamping block 44, and the elastic sheet 50 is clamped and installed in the first clamping block 44; second joint piece 45 install in first joint piece 44 is close to one side of the notch of mounting groove 21 to be equipped with the groove of stepping down 451 of joint groove 41 intercommunication, the groove of stepping down 451 is used for supplying drive shaft 60 passes and the joint extremely in the joint groove 41.

Specifically, in this embodiment, when assembling toothbrush head 10, can install the shell fragment 50 joint on first joint piece 44 earlier, in the mounting groove 21 of installing to toothbrush head body 20 at the first joint piece 44 that will install shell fragment 50 (of course, also can install first joint piece 44 to toothbrush head body 20's mounting groove 21 earlier, again with shell fragment 50 joint to the first joint piece 44 of installation). Then install second joint piece 45 to the joint inslot 41 in, accomplish the equipment of whole toothbrush head 10 promptly, unusual simple and convenient.

It can be understood that after the clip member 40 is detached into the first clip block 44 and the second clip block 45, the elastic sheet 50 can be clipped into the clip groove 41 from the end of the first clip block 44 close to the second clip block 45, and then the elastic sheet 50 is limited by the second clip block 45, so as to prevent the elastic sheet 50 from separating from the clip groove 41. Compare in the condition that joint spare 40 is a monoblock, divide into first joint piece 44 and the very big installation that has made things convenient for shell fragment 50 of second joint piece 45.

In an embodiment, as shown in fig. 12 and 13, the resilient tab mounting portion 30 includes a second limiting groove 34 and a limiting protrusion 35, an opening 42 of the second limiting groove 34 faces a notch of the mounting groove 21, and the limiting protrusion 35 extends to a side of the notch of the mounting groove 21; the shell fragment 50 is close to the one end of brush is followed toothbrush head body 20's axial direction joint to in the second spacing groove 34, the other end is the setting of bending and forms the notch orientation the third spacing groove 54 of spacing lug 35, third spacing groove 54 is followed toothbrush head body 20's axial direction with spacing lug 35 looks joint.

In this embodiment, the second limiting groove 34 is provided at an end of the first clamping block 44 away from the second clamping block 45, and the size of the second limiting groove is matched with the end of the elastic sheet 50, so that when the end of the elastic sheet 50 is inserted into the second limiting groove 34, the surface of the end is just abutted against the wall surface of the second limiting groove 34, and the elastic sheet 50 is prevented from shaking back and forth or from shaking left and right.

The limiting projection 35 is clamped in the third limiting groove 54, so that the depth of the elastic sheet 50 in the third limiting groove can be prevented from being too deep or too shallow, the position of the elastic sheet 50 is accurate, and the abutting lug boss 51 on the elastic sheet 50 is accurate and effective to abut against the driving shaft 60. The elastic sheet 50 can be positioned by matching with the other end of the elastic sheet 50, so that the elastic sheet 50 is prevented from shaking.

In an embodiment, as shown in fig. 12 or 13, the first clamping block 44 is provided with an avoiding hole 441 at a position corresponding to the abutting boss 51, the avoiding hole 441 is communicated with the clamping groove 41, and the abutting boss 51 is located between the clamping groove 41 and the avoiding hole 441. In this embodiment, the size of the avoiding hole 441 is similar to the size of the abutting boss 51, and may be slightly larger than the size of the abutting boss 51, and the abutting boss 51 is located at the position of the avoiding hole 441 close to the aperture of the clamping groove 41. In this way, the inner wall surface of the engagement groove 41 can be prevented from obstructing the deformation of the abutment boss 51, and when the drive shaft 60 presses the abutment boss 51, the abutment boss 51 can be deformed toward the side of the avoidance hole 441, and the elastic force is smoothly generated to act in the opposite direction on the drive shaft 60.

The utility model discloses still provide an electric toothbrush, this electric toothbrush includes toothbrush head 10 and toothbrush handle, and drive shaft 60 is installed to this toothbrush handle, and this toothbrush head 10 is installed on this drive shaft 60. The specific structure of the toothbrush head 10 refers to the above embodiments, and since the electric toothbrush adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A toothbrush head for attachment to a drive shaft of a toothbrush handle, the toothbrush head comprising:

the toothbrush head body is provided with a brush at one end and an installation groove at the other end, and an elastic piece installation position is arranged in the installation groove;

the clamping piece is arranged in the mounting groove and is provided with a clamping groove for clamping the driving shaft, an opening is formed in one side, corresponding to the elastic piece mounting position, of the clamping groove, and the opening is communicated with the clamping groove; and the number of the first and second groups,

the elastic sheet is arranged on the elastic sheet mounting position and is provided with a butting boss; the butt boss passes through the opening stretches into in the joint inslot, and can with drive shaft elasticity butt.

2. The toothbrush head according to claim 1, characterized in that the spring piece mounting 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 opposite at intervals to form a first limiting groove;

the shell fragment is equipped with first spacing arm, first spacing arm is followed the axial direction joint of toothbrush head body extremely first spacing inslot.

3. The toothbrush head of claim 2, wherein the resilient tab mounting location further comprises a second limiting rib, the second limiting rib having a first limiting surface facing the notch of the mounting slot;

the shell fragment still is equipped with the spacing arm of second, the spacing arm of second is followed the radial direction of toothbrush head body extends to the butt is in on the first spacing face.

4. The toothbrush head of claim 3, wherein the clip is snap-fitted into the fitting groove and has a second retaining surface facing the first retaining surface, and the second retaining surface is located on a side of the second retaining arm facing away from the first retaining surface.

5. A toothbrush head according to claim 4 characterised in that the first retaining rib is formed integrally with the head body; and/or the second limit protruding strip and the toothbrush head body are integrally formed.

6. A toothbrush head for attachment to a drive shaft of a toothbrush handle, the toothbrush head comprising:

one end of the toothbrush head body is provided with a brush, and the other end of the toothbrush head body is provided with an installation groove;

the clamping piece is arranged in the mounting groove and is provided with a clamping groove for clamping the driving shaft, and an elastic piece mounting position is arranged in the clamping groove; and the number of the first and second groups,

the elastic sheet is arranged on the elastic sheet mounting position and is provided with a butt boss, and the butt boss protrudes from the elastic sheet to the inside of the clamping groove and can be elastically abutted against the driving shaft.

7. The toothbrush head of claim 6, wherein the clamping member comprises a first clamping block and a second clamping block, the first clamping block is formed with the clamping groove and the spring piece mounting position, and the spring piece is clamped and mounted in the first clamping block;

the second joint piece install in first joint piece is close to one side of the notch of mounting groove to be equipped with the groove of stepping down of joint groove intercommunication, the groove of stepping down is used for supplying the drive shaft passes and the joint extremely the joint inslot.

8. The toothbrush head of claim 7, wherein the resilient tab mounting portion includes a second retaining groove and a retaining projection, the second retaining groove opens toward the notch of the mounting groove, and the retaining projection extends toward a side of the notch of the mounting groove;

the shell fragment is close to the one end of brush is followed the axial direction joint of toothbrush head body connects to in the second spacing inslot, the other end is to bend and sets up and form the notch orientation the third spacing groove of spacing lug, the third spacing groove is followed the axial direction of toothbrush head body with spacing lug looks joint.

9. The toothbrush head of claim 8, wherein 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 positioned between the clamping groove and the orifice of the avoidance hole.

10. An electric toothbrush, comprising:

a toothbrush head according to any one of claims 1 to 9; and the number of the first and second groups,

a toothbrush handle having a drive shaft, the toothbrush head being connected to the drive shaft.