WO2021227899A1

WO2021227899A1 - Toothbrush head and toothbrush holder connecting structure, and toothbrush

Info

Publication number: WO2021227899A1
Application number: PCT/CN2021/091537
Authority: WO
Inventors: 徐振武; 戴晓国; 张常进; 张红涛
Original assignee: 上海携福电器有限公司
Priority date: 2020-05-14
Filing date: 2021-04-30
Publication date: 2021-11-18
Also published as: CN212488964U

Abstract

Disclosed in the present application are a toothbrush head and toothbrush holder connecting structure, and a toothbrush. The toothbrush head and toothbrush holder connecting structure comprises a toothbrush head (1) and a toothbrush holder (2), and the toothbrush head (1) is provided with a connecting groove (11) used for containing the toothbrush holder (2); at least two limiting grooves are provided in the toothbrush head (1), and at least two limiting blocks are arranged on the toothbrush holder (2); or the toothbrush head (1) is provided with at least two limiting blocks, and the toothbrush holder (2) is provided with at least two limiting grooves; and the directions of extension of the limiting grooves are different, and each limiting groove and each limiting block respectively match each other in a concave-convex manner, such that the toothbrush head (1) and the toothbrush holder (2) are limited in at least two directions. The toothbrush comprises the toothbrush head and toothbrush holder connecting structure. In the present application, the toothbrush holder can be limited in the connecting groove in at least two different directions, and therefore, the connecting strength of the toothbrush head and the toothbrush holder is improved.

Description

Connection structure of toothbrush head and brush handle, toothbrush

This application claims the priority of the Chinese patent application filed at the Chinese Patent Office on May 14, 2020, with the application number of 202020807369.4, and the title of the invention "toothbrush head and handle connection structure, toothbrush", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the technical field of cleaning appliances, in particular to a toothbrush head and a brush handle connection structure, and a toothbrush.

Background technique

Toothbrushes generally include a toothbrush head and a brush handle. One end of the brush handle is connected with a connecting shaft. The connecting shaft is used to form a detachable connection with the toothbrush head, facilitating the replacement of the toothbrush head.

There are currently two ways to connect the toothbrush head and the connecting shaft:

1. One end of the toothbrush head is provided with a flat groove, and the connecting shaft is in interference fit with the flat groove. The disadvantage of this method is that after a long time of use, the toothbrush head and the connecting shaft are easy to loosen, and the toothbrush head is easy to fall;

2. One end of the toothbrush head is provided with a threaded hole, and the connecting shaft and the threaded hole form a threaded connection. The design of the brush handle is generally in line with ergonomics, and the user can comfortably hold the brush handle when using it. The threaded connection makes the toothbrush head and the brush handle easy to rotate relative to each other, which cannot guarantee that the toothbrush head and the brush can be The relative position of the handle.

Above, the connection between the toothbrush head and the handle is not secure enough, which affects the normal use of the toothbrush. The statements here only provide background information related to this application, and do not necessarily constitute prior art.

technical problem

One of the objectives of the embodiments of the present application is to provide a toothbrush head and a handle connection structure, and a toothbrush, which aims to solve the problem that the normal use of the toothbrush is affected by the insufficient connection between the toothbrush head and the handle.

Technical solutions

In order to solve the above technical problems, the technical solutions adopted in the embodiments of this application are:

In a first aspect, there is provided a toothbrush head and a brush handle connection structure, comprising a toothbrush head and a brush handle, the toothbrush head and the brush handle both extend in the longitudinal direction, and one end of the toothbrush head is provided for accommodating the brush The connecting groove at one end of the handle;

The inner wall of the toothbrush head is provided with at least two limiting grooves respectively communicating with the connecting groove, and at least two limiting blocks are provided on the brush handle; or, the inner wall of the toothbrush head is provided with at least Two limiting blocks, at least two limiting grooves are opened on the outer side wall of the brush handle;

Each of the limiting grooves has a different extending direction; each of the limiting grooves and each of the limiting blocks are matched with concave and convex one-to-one to form the limiting of the toothbrush head and the brush handle in at least two directions .

In one embodiment, at least one of the limiting slots is a first limiting slot, and the first limiting slot extends in the longitudinal direction; at least one of the limiting blocks is a first limiting block, and the first limiting slot is The position block is matched with the concave and convex of the first limit groove to form a limit position of the toothbrush head and the brush handle in the circumferential direction.

In one embodiment, one end of the first limiting groove in the longitudinal direction extends beyond the opening of the connecting groove, and the other end of the first limiting groove in the longitudinal direction is blocked by a first stop surface.

In an embodiment, there is one or more than one first limiting slot.

In one embodiment, at least one of the limiting slots is a second limiting slot, and the second limiting slot extends in a circumferential direction; at least one of the limiting blocks is a second limiting block, and the second limiting block is The limit block and the second limit groove form a concave-convex fit to form a limit of the toothbrush head and the brush handle in the longitudinal direction.

In an embodiment, the two ends of the second limiting groove in the circumferential direction respectively end at a second stopping surface, and the second limiting block abuts between the two second stopping surfaces.

In an embodiment, the second limiting groove is a circular arc groove, and the outer wall of the second limiting block is an arc surface for matching with the circular arc groove.

In an embodiment, the second limiting groove is an annular groove that ends in a circumferential direction.

In an embodiment, each of the limiting grooves is distributed at intervals.

In one embodiment, the limit blocks are connected to each other.

In one embodiment, the brush handle includes a hand-held handle and a connecting shaft connected to one end of the hand-held handle, and the connecting groove is used for accommodating the connecting shaft;

The limiting block is provided on the connecting shaft, or the limiting slot is opened on the outer side wall of the connecting shaft.

In an embodiment, the connecting shaft and the hand-held handle are connected separately or integrally.

In one embodiment, the connecting shaft includes a first shaft section connected to the handle, and the outer peripheral wall of the first shaft section is configured as a conical surface whose outer diameter gradually decreases from one end to the other end; the connecting groove It includes a first groove section communicating with the outside, and the first shaft section is slidably arranged in the first groove section.

In an embodiment, the connecting shaft further includes a cylindrical second shaft section disposed at an end of the first shaft section away from the handle; the connecting groove includes a second shaft section communicating with the first groove section The second groove section, the second shaft section is slidably arranged in the second groove section.

In a second aspect, a toothbrush is provided, which includes a connecting structure of the toothbrush head and the handle.

Beneficial effect

The beneficial effect of the connection structure of the toothbrush head and the brush handle provided by the embodiments of the present application is that at least two limiting grooves are provided in one of the outer side wall of one end of the brush handle and the inner side wall of the toothbrush head, respectively. At least two limit blocks are provided on the other, and the extension directions of each limit slot are different, and each limit block and each limit slot form a concave-convex fit corresponding to each other, so that one end of the brush handle can be along at least two different The direction is limited in the connecting groove of the toothbrush head, which effectively restricts the relative rotation of the brush handle and the toothbrush head in the circumferential direction and the relative movement along the longitudinal direction, improves the connection strength of the toothbrush head and the brush handle, and facilitates the normal use of the toothbrush.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or exemplary technical descriptions. Obviously, the accompanying drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

Figure 1 is a schematic diagram of the cooperation of the toothbrush provided by the embodiment of the application;

2 is a three-dimensional structural diagram of a brush handle and a connecting shaft provided by an embodiment of the application;

Figure 3 is a partial enlarged view of A in Figure 2;

Figure 4 is a three-dimensional structural view of a toothbrush head provided by an embodiment of the application;

Figure 5 is a partial enlarged view of B in Figure 4;

Figure 6 is a cross-sectional view in one direction of the toothbrush head provided by an embodiment of the application;

Fig. 7 is a partial enlarged view of C in Fig. 6;

Figure 8 is a cross-sectional view of the toothbrush head provided by the embodiment of the application in another direction;

Figure 9 is a partial enlarged view of a toothbrush head provided by another embodiment of the application;

10 is a partial enlarged view of a brush handle and a connecting shaft provided by another embodiment of the application;

Fig. 11 is a partial view of a toothbrush head with a connecting shaft and a brush handle provided by an embodiment of the application.

Among them, the reference signs in the figure:

1-toothbrush head; 11-connection groove; 111-first groove section; 112-second groove section; 12-first limit groove; 13-second limit groove; 14-first stop surface; 15- Second stop surface; 16-third stop surface; 17-fourth stop surface; 2-brush handle; 21-handheld handle; 22-connecting shaft; 221-first shaft section; 222-second shaft section ; 3-The first limit block; 4-The second limit block.

Embodiments of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not used to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "installed on" another component, it can be directly on the other component or indirectly on the other component. When a component is said to be "connected" to another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for ease of description, and do not indicate or imply the device referred to. Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. For those of ordinary skill in the art, the specific meaning of the above terms can be understood according to specific conditions. The terms "first" and "second" are only used for ease of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" means two or more than two, unless otherwise specifically defined.

In order to illustrate the technical solutions provided by the present application, detailed descriptions are given below in conjunction with specific drawings and embodiments.

Please refer to FIGS. 1 to 6 together. The toothbrush head and handle connection structure provided by the embodiment of the present application includes a toothbrush head 1 and a brush handle 2. One end of the toothbrush head 1 is provided with a connecting groove 11 for accommodating one end of the brush handle 2. Both the toothbrush head 1 and the brush handle 2 extend in the longitudinal direction, and one end of the brush handle 2 can be detachably connected to the connecting groove 11 in the longitudinal direction to realize the detachable connection between the brush handle 2 and the toothbrush head 1 and facilitate the replacement of the toothbrush head 1. .

It should be noted here that the longitudinal direction refers to the length extension trend of the toothbrush head 1 and the brush handle 2. Here, the toothbrush head 1 and the brush handle 2 extend in the longitudinal direction, and the toothbrush head 1 and the brush handle 2 are not limited to a straight line. In fact, the toothbrush head 1 and the handle 2 can extend straight in the longitudinal direction, can also extend obliquely, or even extend along a curve. In addition, it should be noted that the longitudinal direction mentioned below also refers to the same direction as the length of the toothbrush head 1 and the handle 2. The structure described below extends in the longitudinal direction, and also refers to the longitudinal direction. The straight, inclined or curved extension will not be explained one by one in the following.

Please refer to Figures 3 and 5 together. One of the inner side wall of the toothbrush head 1 and the outer side wall of one end of the handle 2 is provided with at least two limiting blocks, and the other has at least two limiting grooves. In addition, each limiting block and each limiting groove respectively form a concave-convex fit in a one-to-one correspondence, so that one end of the brush handle 2 can be limited in the connecting groove 11. Wherein, the extension direction of each limit slot is different, and each limit slot and the extension direction of each limit block are set in one-to-one correspondence, so that when one end of the brush handle 2 enters the connecting slot 11, the limit blocks can be respectively Restricted in at least two different directions in the limiting groove, that is, the toothbrush head 1 and the handle 2 can be limited in at least two directions, thereby strengthening the connection between the toothbrush head 1 and the handle 2 Therefore, the toothbrush head 1 and the brush handle 2 can be prevented from rotating relative to each other in the circumferential direction, and at the same time, the brush handle 2 and the toothbrush head 1 can be prevented from moving relative to each other in the longitudinal direction.

In the embodiment of the present application, at least two limiting grooves are provided in one of the outer side wall of one end of the brush handle 2 and the inner side wall of the toothbrush head 1, and at least two limiting blocks are provided in the other, wherein The extension direction of each limit groove is different, and each limit block and each limit groove form a concave-convex fit corresponding to each other, so that one end of the brush handle 2 can be confined in the connecting groove 11 of the toothbrush head 1 in at least two different directions. The relative rotation of the brush handle 2 and the toothbrush head 1 in the circumferential direction and the relative movement along the longitudinal direction are effectively restricted, the connection strength of the toothbrush head 1 and the brush handle 2 is improved, and the normal use of the toothbrush is facilitated.

Understandably, please refer to Figures 3 and 5 together. In one embodiment, the limiting block is provided on the outer side wall of the brush handle 2, and the limiting groove is provided on the inner side wall of the toothbrush head 1, and one end of the brush handle 2 is inserted and connected When in the slot 11, each limit block is matched with each limit slot in a one-to-one correspondence.

In another embodiment, the limiting block is provided on the inner side wall of the toothbrush head 1, and the limiting groove is opened on the outer side wall of the brush handle 2.

In one embodiment, please refer to FIG. 3, FIG. 5, and FIG. 7 together. At least one of the limiting slots is the first limiting slot 12, and the first limiting slot 12 is arranged along the longitudinal extension. At least one limiting block is the first limiting block 3, and the first limiting block 3 is correspondingly extended along the longitudinal direction, and the first limiting block 3 and the first limiting slot 12 form a concave-convex fit. When one end of the brush handle 2 is inserted into the connecting groove 11, the first limit block 3 is circumferentially constrained in the first limit groove 12, so as to realize the circumferential limit of the toothbrush head 1 and the handle 2 and strengthen the toothbrush The robustness of the connection between the head 1 and the handle 2 prevents the toothbrush head 1 and the handle 2 from rotating relative to each other in the circumferential direction.

It can be understood that two third stop surfaces 16 are formed on the inner side wall of the toothbrush head 1 or the outer side wall of the handle 2. Two ends of a limiting groove 12 in the circumferential direction respectively end at a third stopping surface 16. When one end of the brush handle 2 is inserted into the connecting groove 11, the first limiting block 3 enters the first limiting slot 12, and at this time, the first limiting block 3 abuts between the two third stopping surfaces 16 . Therefore, the cooperation of the first limiting block 3 and the first limiting groove 12 restricts the relative rotation of the brush handle 2 and the toothbrush head 1 in the circumferential direction, and can ensure the relative position of the toothbrush head 1 and the brush handle 2 after the toothbrush head 1 is replaced. Improve the comfort of use.

In one embodiment, please refer to FIGS. 3 and 5 together. The inner side wall of the toothbrush head 1 is provided with a first stop surface 14, or the first stop surface 14 is provided on the outer side wall of the handle 2. The first stop surface 14 is respectively connected to the two third stop surfaces 16, and the first stop surface 14 and the two third stop surfaces 16 enclose the first stop groove 12. One end of the first limiting groove 12 in the longitudinal direction extends outside the opening of the connecting groove 11, so that the first limiting block 3 enters the first limiting groove 12; and the other end of the first limiting groove 12 in the longitudinal direction ends at The first stop surface 14. When the first limiting block 3 enters the first limiting groove 12, the first limiting block 3 can be located on the side of the first stopping surface 14 when the toothbrush head 1 and the handle 2 are not matched to limit the handle 2 The stroke moving toward the toothbrush head 1 is to limit the longitudinal relative displacement of the brush handle 2 and the toothbrush head 1, and is used to protect the toothbrush head 1 and the brush handle 2 to prevent the brush handle 2 from being inserted into the connecting groove 11 indefinitely.

In one embodiment, please refer to FIG. 3, FIG. 5 and FIG. 8 together. At least one of the limiting grooves is the second limiting groove 13, and the second limiting groove 13 extends along the circumferential direction. At least one limiting block is the second limiting block 4, and the second limiting block 4 is correspondingly extended in the circumferential direction, and the second limiting block 4 and the second limiting slot 13 form a concave-convex fit. When one end of the brush handle 2 is inserted into the connecting slot 11, the first limit block 3 enters the first limit slot 12, and the second limit block 4 also enters the second limit slot 13 at the same time, and the second limit The position block 4 is longitudinally confined in the second limit groove 13, so as to realize the longitudinal limit of the toothbrush head 1 and the brush handle 2, strengthen the connection reliability of the toothbrush head 1 and the brush handle 2, and avoid the toothbrush head 1 and the brush handle 2. The brush handle 2 relatively moves in the longitudinal direction.

It is understandable that two fourth stop surfaces 17 are formed on the inner side wall of the toothbrush head 1 or the outer side wall of the brush handle 2. The longitudinal ends of the two limiting grooves 13 respectively end at the fourth stopping surface 17. When one end of the brush handle 2 is inserted into the connecting slot 11, the first limiting block 3 enters the first limiting slot 12, and the second limiting block 4 also enters the second limiting slot 13 accordingly. The two limiting blocks 4 abut between the two fourth stopping surfaces 17. Therefore, the cooperation of the second limiting block 4 and the second limiting groove 13 at least restricts the relative rotation of the brush handle 2 and the toothbrush head 1 in the longitudinal direction, and prevents the brush handle 2 and the brush handle 2 from loosening.

In one embodiment, please refer to Figures 3, 5 and 8 together. The inner side wall of the toothbrush head 1 or the outer side wall of the handle 2 is provided with two second stop surfaces 15, and the two second stoppers The surfaces 15 are spaced in the circumferential direction and are arranged opposite to each other, that is, the two ends of the second limiting groove 13 in the circumferential direction respectively end at the second stop surface 15. When one end of the brush handle 2 is inserted into the connecting groove 11, the second limiting block 4 enters the second limiting slot 13, and at this time, the second limiting block 4 abuts between the two second stopping surfaces 15 . Therefore, the cooperation of the second limiting block 4 and the second limiting groove 13 restricts the relative rotation of the brush handle 2 and the toothbrush head 1 in the circumferential direction, and can ensure the relative position of the toothbrush head 1 and the brush handle 2 after replacing the toothbrush head 1. Improve the comfort of use.

Above, the first limiting groove 12 is concave-convex fitted to the first limiting block 3, and the second limiting slot 13 is concave-convex fitted to the second limiting block 4, avoiding the relative rotation of the brush handle 2 and the toothbrush head 1, while also restricting The handle 2 moves relative to the toothbrush head 1.

Among them, please refer to FIGS. 6 to 8 together. FIGS. 6 to 8 show the extending directions of the first limiting slot 12 and the second limiting slot 13, and the extending direction of the first limiting slot 12 is a, which is The longitudinal direction x, the extension direction of the second limiting groove is b, which is the circumferential direction.

In one embodiment, the limit slots are arranged at intervals, that is, the first limit slot 12 and the second limit slot 13 are arranged at intervals, and correspondingly, the first limit block 3 and the second limit block 4 are arranged at intervals . Please refer to Figure 8, where two second limiting grooves 13 and one first limiting groove 12 are provided, and the two second limiting grooves 13 are provided on the two opposite inner side walls of the toothbrush head 1. Correspondingly, the brush handle 2 Two second limit blocks 4 are also provided on the two opposite outer side walls, and the two second limit blocks 4 respectively form a concave-convex fit with the two second limit grooves 13, so as to strengthen the connection between the handle 2 and the toothbrush head 1. The smoothness. Of course, the second limiting groove 13 can also be provided in multiples, and the plurality of second limiting grooves 13 are evenly opened on the inner side wall of the connecting groove 11 along the circumferential direction. At this time, the second limiting block 4 and the second limiting groove 13 Bit slot 13 is correspondingly set.

In another embodiment, please refer to FIGS. 9 and 10 together, the second limiting groove 13 continuously extends in the circumferential direction on the inner side wall of the toothbrush head 1, and the second limiting groove 13 may also be arranged along the circumference An annular groove is formed end to end, and the annular groove is connected to the first limiting groove 12; correspondingly, at this time, the second limiting block 4 continuously extends on the outer peripheral wall of the brush handle 2 along the circumference. And the second limiting block 4 is arranged end to end, and the second limiting block 4 is connected to the first limiting block 3.

In addition, a first limiting slot 12 is provided here, and the first limiting slot 12 is provided between the two second limiting slots 13, and here is also set to more than one, and the specific number is not uniquely limited.

In another embodiment, the limiting blocks are connected to each other, that is, the first limiting block 3 and the second limiting block 4 are connected to each other. Correspondingly, the first limiting slot 12 and the second limiting slot 13 are communicated, that is, the first limiting slot 12 and the second limiting slot 13 are not spaced apart.

In one embodiment, the second limiting groove 13 is set as a circular arc groove, the outer wall of the second limiting block 4 is set as a circular arc surface, and the circular arc surface of the second limiting block 4 is matched with the circular arc groove. The arc surface and the arc groove are arranged to facilitate the second limiting block 4 to enter and protrude into the second limiting groove 13 in the longitudinal direction, and to facilitate the disassembly of the brush handle 2 and the toothbrush head 1.

In one embodiment, please refer to FIGS. 2 and 3 together. The brush handle 2 includes a handle 21 and a connecting shaft 22 connected to one end of the handle 21. The connecting shaft 22 and the handle 21 are connected separately or integrally. . The connecting groove 11 is used for accommodating the connecting shaft 22.

Wherein, the above-mentioned limiting block is provided on the connecting shaft 22, or the above-mentioned limiting groove is opened on the outer side wall of the connecting shaft 22.

In one embodiment, please refer to Figures 7, 10 and 11 together. The connecting shaft 22 includes a first shaft section 221 for connecting the handle 21. A tapered surface that gradually decreases toward the other end. The connecting groove 11 includes a first groove section 111 that communicates with the outside. The first groove section 111 is also correspondingly configured as a conical surface whose outer diameter gradually decreases from one end to the other end, so that the first shaft section 221 can be slidably arranged in the first groove. Within paragraph 111.

It is understandable that the outer diameter of the first shaft section 221 gradually decreases from the end close to the handle 21 to the end away from the handle 21. Of course, the outer diameter of the first shaft section 221 can also be along the direction close to the handle 21. One end gradually increases in the direction away from the end of the handle 21. In order to strengthen the cooperation between the first shaft section 221 and the first groove section 111, the inner diameter of the first groove section 111 is set corresponding to the outer diameter of the first shaft section 221 .

In one embodiment, please refer to FIGS. 7, 10, and 11 together. The connecting shaft 22 further includes a second shaft section 222 disposed at an end of the first shaft section 221 facing away from the handle 21. The second shaft section 222 is It is cylindrical, and the outer diameter of the second shaft section 222 is the same as the outer diameter of the end of the first shaft section 221 away from the handle 21. The connecting groove 11 includes a second groove section 112 communicating with the first groove section 111. Correspondingly, the inner diameter of the second groove section 112 matches the outer diameter of the second shaft section 222, so that the second shaft section 222 fits and slides. In the second slot section 112. Therefore, the inner diameter of the entire connecting groove 11 is reduced, leaving design space for the shape design of the toothbrush head 1.

In one embodiment, the present application also provides a toothbrush, including a toothbrush head and a handle connection structure. The connection structure of the toothbrush head and the handle has been explained in detail above, and will not be repeated here.

Among them, the toothbrush here can be set as an electric toothbrush, or can be set as an ordinary toothbrush. When the toothbrush is an electric toothbrush, the vibrating motor of the toothbrush is arranged in the handle 2, and the connecting shaft 22 is arranged on the vibrating shaft of the vibrating motor, so that the vibrating shaft is inserted into the connecting groove 11 along with the connecting shaft 22, which is convenient for the toothbrush head 1 vibration.

In the toothbrush of the present application, one of the toothbrush head 1 and the handle 2 is provided with at least two limiting grooves, and the other is provided with at least two limiting blocks, and the extending directions of the limiting grooves are different. , Each limiting block and each limiting groove form a concave-convex fit corresponding to each other, so that one end of the brush handle 2 can be limited in the connecting groove 11 of the toothbrush head 1 in at least two different directions, effectively restricting the brush handle 2 and the toothbrush head 1. The relative rotation along the circumferential direction and the relative movement along the longitudinal direction improve the connection strength of the toothbrush head 1 and the handle 2, and facilitate the normal use of the toothbrush.

The above are only optional embodiments of the present application, and are not used to limit the present application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the scope of the claims of this application.

Claims

A connection structure of a toothbrush head and a brush handle, comprising a toothbrush head and a brush handle. The toothbrush head and the brush handle extend in the longitudinal direction.的连接槽;

The inner wall of the toothbrush head is provided with at least two limiting grooves respectively communicating with the connecting groove, and at least two limiting blocks are provided on the brush handle; or, the inner wall of the toothbrush head is provided with at least Two limiting blocks, at least two limiting grooves are opened on the outer side wall of the brush handle;

Each of the limiting grooves has a different extending direction; each of the limiting grooves and each of the limiting blocks are matched with concave and convex one-to-one to form the limiting of the toothbrush head and the brush handle in at least two directions .
The connection structure of the toothbrush head and the handle according to claim 1, wherein at least one of the limiting grooves is a first limiting groove, and the first limiting groove extends longitudinally; at least one of the limiting grooves The block is a first limiting block, and the first limiting block is concave-convex matched with the first limiting groove to form a circumferential limit of the toothbrush head and the brush handle.
The connection structure of the toothbrush head and the handle according to claim 2, wherein one end of the first limiting groove in the longitudinal direction extends beyond the opening of the connecting groove, and the first limiting groove extends in the longitudinal direction. The other end of the upper part ends with a first stop surface.
The connection structure of the toothbrush head and the handle according to claim 2, wherein the number of the first limiting grooves is one or more than one.
The connection structure of the toothbrush head and the handle according to claim 1, wherein at least one of the limiting grooves is a second limiting groove, and the second limiting groove extends in the circumferential direction; at least one of the limiting grooves The positioning block is a second limiting block, and the second limiting block forms a concave-convex fit with the second limiting groove to form a limit for the toothbrush head and the brush handle in the longitudinal direction.
The connection structure of the toothbrush head and the handle according to claim 5, wherein the two ends of the second limiting groove in the circumferential direction respectively end at a second stopping surface, and the second limiting block abuts Tightly between the two second stop surfaces.
The connection structure of the toothbrush head and the handle according to claim 5, wherein the second limiting groove is a circular arc groove, and the outer wall of the second limiting block is used to cooperate with the circular arc groove The arc surface.
The connection structure of the toothbrush head and the handle according to claim 5, wherein the second limiting groove is an annular groove that ends in a circumferential direction.
The connection structure of the toothbrush head and the handle according to any one of claims 1-8, wherein each of the limiting grooves is distributed at intervals.
The connection structure of the toothbrush head and the handle according to any one of claims 1-8, wherein the limit blocks are connected to each other.
The toothbrush head and brush handle connection structure according to any one of claims 1-8, wherein the brush handle comprises a hand-held handle and a connecting shaft connected to one end of the hand-held handle, and the connecting groove is used to accommodate The connecting shaft;

The limiting block is provided on the connecting shaft, or the limiting slot is opened on the outer side wall of the connecting shaft.
The connection structure of the toothbrush head and the handle according to claim 11, wherein the connecting shaft and the hand-held handle are connected separately or integrally.
The toothbrush head and handle connection structure according to claim 11, wherein the connecting shaft comprises a first shaft section connected to the handle, and the outer peripheral wall of the first shaft section is set to have an outer diameter from one end to the other. A tapered surface at the other end that gradually decreases; the connecting groove includes a first groove section communicating with the outside, and the first shaft section is slidably disposed in the first groove section.
The connection structure of the toothbrush head and the handle according to claim 13, wherein the connecting shaft further comprises a cylindrical second shaft section disposed at an end of the first shaft section away from the handle; The connecting groove includes a second groove section communicating with the first groove section, and the second shaft section is slidably disposed in the second groove section.
A toothbrush, characterized by comprising the toothbrush head and the handle connection structure according to any one of claims 1-14.