Brush body and toothbrush

Abstract

The present application is applicable to the technical field of cleaning tools, and provides a brush body and a toothbrush, including a toothbrush head and a brush handle both extending longitudinally, wherein one end of the toothbrush head is provided with a connecting groove for accommodating one end of the brush handle, the inner wall of the toothbrush head is provided with a first limiting groove, and one end of the brush handle is provided with a limiting block; alternatively, the outer wall of the brush handle is provided with a first limiting groove, and the inner wall of the toothbrush head is provided with a limiting block; the limiting block can be inserted into the first limiting groove longitudinally and rotated circumferentially to form a longitudinal limiting fit with the first limiting groove; a limiting structure is provided on the side of the first limiting groove, and the limiting block can form a circumferential limiting fit with the limiting structure after rotation. By providing the limiting block to cooperate with the first limiting groove and the limiting block to connect the limiting structure, the toothbrush head and the brush handle are limited in the longitudinal and circumferential directions, thereby improving the connection reliability of the toothbrush head and the brush handle, simplifying the installation and disassembly operations of the toothbrush head and the brush handle, and improving the convenience of using the brush body.

Description

Technical Field

[0001] The present application belongs to the technical field, and more specifically, relates to a brush body and a toothbrush. Background Art

[0002] A toothbrush generally comprises a toothbrush head and a brush handle. One end of the brush handle is provided with a protruding shaft, which is detachably connected to the toothbrush head to enable replacement of the toothbrush head.

[0003] There are currently two ways to connect the toothbrush head and the extended shaft:

[0004] One is that the extended shaft is inserted into the toothbrush head longitudinally and forms an interference fit with the toothbrush head, which has a low connection reliability. After long-term use of the toothbrush, the toothbrush head and the brush handle are prone to loosening, affecting the comfort of using the toothbrush.

[0005] Another method involves threading the extension shaft into the toothbrush head. This can cause the locking position of the toothbrush head and extension shaft to change after repeated brush head replacements, affecting the specific orientation of the toothbrush head and handle. Furthermore, the extension shaft rotates continuously into the toothbrush head to form a threaded connection, making installation and removal of the toothbrush head and handle cumbersome and time-consuming, reducing the convenience of using the toothbrush. Summary of the Invention

[0006] One of the purposes of the embodiments of the present application is to provide a brush body, aiming to solve the technical problems in the prior art of the difficult disassembly and assembly of the toothbrush head and the brush handle and the low connection reliability.

[0007] To solve the above technical problems, the technical solutions adopted in the embodiments of the present application are:

[0008] A brush body is provided, comprising a toothbrush head and a brush handle, both of which extend longitudinally; a connecting groove for accommodating one end of the brush handle is provided at one end of the toothbrush head; a first limiting groove is provided on the inner wall of the toothbrush head, and a limiting block is provided at one end of the brush handle; or a first limiting groove is provided on the outer wall of the brush handle, and a limiting block is provided on the inner wall of the toothbrush head; the limiting block can be longitudinally inserted into the first limiting groove and circumferentially rotated to form a longitudinal limiting engagement with the first limiting groove;

[0009] A limiting structure is provided beside the first limiting groove, and the limiting block can form a circumferential limiting fit with the limiting structure after rotation.

[0010] In one embodiment, the first limiting groove includes a first groove section and a second groove section that are interconnected, and the length of the second groove section along the circumferential direction is greater than the length of the first groove section along the circumferential direction;

[0011] The limiting block includes a first protrusion and a second protrusion, the second protrusion is connected to the first protrusion or is arranged beside the first protrusion; the second protrusion can be inserted into the second groove section from the first groove section and form a longitudinal limiting fit with the second groove section, and the first protrusion can form a circumferential limiting fit with the limiting structure.

[0012] In one embodiment, both ends of the second slot section in the longitudinal direction respectively terminate at a first limiting wall, and the second protrusion is pressed tightly between the two first limiting walls when inserted into the second slot section.

[0013] In one embodiment, the first bump is connected to the second bump, and the first bump and the second bump are connected to form an "L" shape or a "T" shape.

[0014] In one embodiment, the limiting structure includes a protrusion arranged next to the first limiting groove, the inner wall of the toothbrush head is formed with a second limiting wall, the protrusion and the second limiting wall are circumferentially spaced to form a second limiting groove, and the first protrusion is circumferentially limited in the second limiting groove.

[0015] In one embodiment, the limiting structure includes at least two protrusions arranged at intervals along the circumferential direction, one of the protrusions is spaced apart from the second limiting wall to form the second limiting groove; at least two protrusions are spaced apart in pairs to form a third limiting groove, and the first protrusion can be alternately limited in the second limiting groove and the third limiting groove along the circumferential direction.

[0016] In one embodiment, the outer wall of the convex portion is provided with a plurality of inclined surfaces, and the plurality of inclined surfaces are sequentially connected along the circumferential direction; or, the outer wall of the convex portion is configured as an arc surface.

[0017] In one embodiment, a protruding shaft is provided at one end of the brush handle, and the brush handle and the protruding shaft are connected separately or integrally; a limiting block or a first limiting groove is provided on the outer wall of the protruding shaft.

[0018] In one embodiment, a first step is formed on the outer peripheral wall of the extending shaft along the circumferential direction, and a second step is formed on the inner peripheral wall of the toothbrush head along the circumferential direction, and the first step is pressed against the second step along the longitudinal direction.

[0019] The brush body provided by the present application has the following beneficial effects: compared with the prior art, the present application provides a limit block on one of the toothbrush head and the brush handle, provides a first limit groove on the other, and provides a limit structure next to the first limit groove. When the brush handle is installed on the toothbrush head, one end of the brush handle is first inserted into the connection groove, at which time the limit block is correspondingly inserted into the first limit groove; then the brush handle and the toothbrush head are relatively rotated in the circumferential direction, at which time the limit block is longitudinally limited in the first limit groove to form a limit in the longitudinal direction of the toothbrush head and the brush handle, and the limit block is connected to the limit structure to form a limit in the circumferential direction of the toothbrush head and the brush handle, thereby strengthening the connection reliability of the toothbrush head and the brush handle, limiting the locking position of the toothbrush head and the brush handle, and preventing the toothbrush head and the brush handle from loosening. Moreover, when installing the toothbrush head and the brush handle, it can be done by simply inserting the brush handle into the toothbrush head and then rotating it around the toothbrush head; when disassembling, the brush handle can be taken out of the toothbrush head by rotating the toothbrush head and the brush handle, making the disassembly and installation operations of the toothbrush head and the brush handle very simple, thereby improving the convenience of using the brush body.

[0020] The present application also provides a toothbrush comprising any of the above-mentioned brush bodies.

[0021] The toothbrush provided in the present application is characterized by providing a limit block on one of the toothbrush head and the brush handle of the brush body, and providing a first limit groove and a limit structure on the other. After one end of the brush handle is installed in the toothbrush head, the limit block is longitudinally limited in the first limit groove, and the limit block is connected to the limit structure to form a circumferential limit, thereby strengthening the connection strength between the toothbrush head and the brush handle of the brush body, limiting the locking position of the toothbrush head and the brush handle, and preventing the toothbrush head and the brush handle from loosening. In addition, when installing the toothbrush head and the brush handle, the brush handle can be inserted into the toothbrush head and then rotated around the toothbrush head; when removing the toothbrush head and the brush handle, the brush handle can be removed from the toothbrush head by rotating the toothbrush head and the brush handle, making the removal and installation of the toothbrush head and the brush handle very simple, and improving the convenience of use of the toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A diagram showing the coordination structure of the brush body provided in an embodiment of the present application;

[0024] Figure 2 A three-dimensional structural diagram of a toothbrush head of a brush body provided in an embodiment of the present application;

[0025] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0026] Figure 4 A cross-sectional view of a toothbrush head of a brush body provided in an embodiment of the present application;

[0027] Figure 5 A three-dimensional structural diagram of a brush handle of a brush body provided in an embodiment of the present application;

[0028] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0029] Figure 7 A cross-sectional view of a toothbrush head of a brush body provided in an embodiment of the present application.

[0030] Among them, the reference numerals in the figures are:

[0031] 1-brush handle; 2-toothbrush head; 21-connecting groove; 211-third groove section; 212-fourth groove section; 213-second step; 22-first limiting groove; 221-first groove section; 222-second groove section; 23-limiting structure; 231-convex portion; 2311-inclined surface; 232-second limiting groove; 233-third limiting groove; 24-first limiting wall; 25-second limiting wall; 26-third limiting wall; 3-extending shaft; 31-first shaft section; 32-second shaft section; 33-first step; 4-limiting block; 41-first protrusion; 42-second protrusion; y-longitudinal direction. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0033] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0036] In order to illustrate the technical solution described in this application, the following is a detailed description with reference to specific drawings and embodiments.

[0037] Please also refer to Figures 1 to 6 The brush body provided in the embodiment of the present application includes a toothbrush head 2 and a brush handle 1, both of which extend in the longitudinal direction y. A connecting groove 21 is provided at one end of the toothbrush head 2, and the connecting groove 21 is used to receive one end of the brush handle 1, so that the brush handle 1 can be inserted into the toothbrush head 2 in the longitudinal direction y and form a detachable connection with the toothbrush head 2.

[0038] Specifically, a first limiting groove 22 is defined on one of the toothbrush head 2 and the brush handle 1, and a limiting block 4 is defined on the other. The first limiting groove 22 is configured to cooperate with the limiting block 4 to provide a limiting position along the longitudinal direction y. A limiting structure 23 is provided beside the first limiting groove 22, and the limiting structure 23 is configured to cooperate with the limiting block 4 to provide a limiting position along the circumferential direction. When the brush handle 1 is inserted into the toothbrush head 2 along the longitudinal direction y, the limit block 4 is inserted into the first limit groove 22; after the brush handle 1 rotates a certain angle circumferentially around the toothbrush head 2, the limit block 4 also rotates a certain angle circumferentially and is limited in the first limit groove 22 along the longitudinal direction y; then one end of the limit block 4 can be inserted into the first limit groove 22 along the longitudinal direction y, and rotate circumferentially to form a limit fit in the longitudinal direction y with the first limit groove 22, thereby forming a limit in the longitudinal direction y for the toothbrush head 2 and the brush handle 1; at the same time, after the limit block 4 rotates circumferentially, the other end of the limit block 4 is connected to the limit structure 23, and forms a circumferential limit fit with the limit structure 23, thereby forming a circumferential limit for the toothbrush head 2 and the brush handle 1. In this embodiment, one end of the brush handle 1 is installed in the toothbrush head 2, which can limit the relative movement of the toothbrush head 2 and the brush handle 1 along the longitudinal direction y, and limit the relative rotation of the toothbrush head 2 and the brush handle 1 along the circumferential direction, thereby enhancing the connection reliability between the toothbrush head 2 and the brush handle 1.

[0039] Specifically, the steps for assembling one end of the brush handle 1 and the toothbrush head 2 are as follows: first, insert one end of the brush handle 1 into the toothbrush head 2 so that the stop block 4 is inserted into the first stop groove 22; then, the brush handle 1 and the toothbrush head 2 are rotated relative to each other in the circumferential direction by a certain angle so that the stop block 4 is retained in the first stop groove 22 and connected to the stop structure 23. The steps for disassembling the brush handle 1 and the toothbrush head 2 are as follows: first, rotate the brush handle 1 and the toothbrush head 2 relative to each other in the circumferential direction by a certain angle, and then remove the brush handle 1 from the toothbrush head 2 along the longitudinal direction y. This operation is very simple and convenient.

[0040] For details, please refer to Figure 2 and Figure 4 In one embodiment, the first limiting groove 22 is formed on the inner wall of the toothbrush head 2, and the first limiting groove 22 is connected to the connecting groove 21, and the limiting block 4 is provided on the outer wall of one end of the brush handle 1. When one end of the brush handle 1 is inserted into the connecting groove 21, the limiting block 4 moves simultaneously with the brush handle 1 and is inserted into the first limiting groove 22. When the brush handle 1 rotates circumferentially around the toothbrush head 2, the limiting block 4 rotates circumferentially with the brush handle 1. Alternatively, in another embodiment, the first limiting groove 22 is formed on the outer wall of the brush handle 1, and the limiting block 4 is provided on the inner wall of the toothbrush head 2. This embodiment will not be further detailed below, and its detailed structure is similar to the embodiment in which the first limiting groove 22 is formed on the inner wall of the toothbrush head 2 and the limiting block 4 is provided on the outer wall of one end of the brush handle 1.

[0041] It should be noted that the longitudinal direction y refers to the extension trend of the length of the toothbrush head 2 and the brush handle 1. Here, the toothbrush head 2 and the brush handle 1 extend along the longitudinal direction y, which does not limit the toothbrush head 2 and the brush handle 1 to extend in a straight line. In fact, the toothbrush head 2 and the brush handle 1 can extend in a straight line along the longitudinal direction y, or can extend obliquely, or even extend along a curve. Figure 7 The figure shows a cross-sectional view of the toothbrush head 2 along a direction parallel to the longitudinal direction y. In this view, the longitudinal direction y is the vertical direction. It should also be noted that the longitudinal direction y mentioned below also refers to the same direction as the length extension trend of the toothbrush head 2 and the handle 1. The structure extending along the longitudinal direction y also refers to extending along the longitudinal direction y in a straight line, obliquely, or curved manner, which will not be explained here.

[0042] In the embodiment of the present application, a limiting block 4 is provided on one of the toothbrush head 2 and the brush handle 1 , a first limiting groove 22 is provided on the other, and a limiting structure 23 is provided beside the first limiting groove 22 . When the brush handle 1 is installed on the toothbrush head 2, first insert one end of the brush handle 1 into the connecting groove 21, at this time the limit block 4 is correspondingly inserted into the first limit groove 22; then the brush handle 1 and the toothbrush head 2 are rotated relative to each other in the circumferential direction, at this time the limit block 4 is limited in the first limit groove 22 along the longitudinal direction y to form a limit on the toothbrush head 2 and the brush handle 1 along the longitudinal direction y, and at this time the limit block 4 is connected to the limiting structure 23 to form a limit on the toothbrush head 2 and the brush handle 1 along the circumferential direction, thereby strengthening the connection reliability between the toothbrush head 2 and the brush handle 1, avoiding loosening of the toothbrush head 2 and the brush handle 1, and limiting the locking position of the toothbrush head 2 and the brush handle 1, which can ensure the relative position of the toothbrush head 2 and the brush handle 1 after replacing the toothbrush head 2, thereby improving the comfort of using the toothbrush. Moreover, when installing the toothbrush head 2 and the brush handle 1, it is only necessary to insert the brush handle 1 into the toothbrush head 2 and then rotate it around the toothbrush head 2; when disassembling, the brush handle 1 can be taken out of the toothbrush head 2 by rotating the toothbrush head 2 and the brush handle 1, making the disassembly and installation operations of the toothbrush head 2 and the brush handle 1 very simple, thereby improving the convenience of using the brush body.

[0043] In one embodiment, see Figure 3 , Figure 3 The figure shows a view of the first limiting groove 22 being provided on the inner wall of the toothbrush head 2. The first limiting groove 22 includes a first groove section 221 and a second groove section 222. The first groove section 221 and the second groove section 222 are connected to each other and are also connected to the connecting groove 21. The first groove section 221 and the second groove section 222 have different lengths extending in the same direction. Specifically, the length of the second groove section extending in the circumferential direction is greater than the length of the first groove section extending in the circumferential direction. Among them, one end of the first groove section 221 extends to the outside along the longitudinal direction y, so that the limiting block 4 can be inserted into the first groove section 221 from the outside. The other end of the first groove section 221 extends to the second groove section 222 along the longitudinal direction y.

[0044] See also Figure 6 , Figure 6 The figure shows a view of the position-limiting block 4 being installed on the outer wall of one end of the brush handle 1. The position-limiting block 4 includes a first protrusion 41 and a second protrusion 42, both of which are installed on the outer wall of one end of the brush handle 1. The second protrusion 42 is connected to the first protrusion 41 or is installed beside the first protrusion 41.

[0045] Specifically, in this embodiment, the second protrusion 42 can be inserted from the first groove section 221 into the second groove section 22, forming a position-limiting fit with the second groove section 221 in the longitudinal direction y; and the first protrusion 41 can form a position-limiting fit with the position-limiting structure 23 in the circumferential direction after rotation. Specifically, when one end of the brush handle 1 is inserted into the connecting groove 21 in the longitudinal direction y, the first protrusion 41 and the second protrusion 42 are simultaneously inserted into the first groove section 221 along with the brush handle 1; after the brush handle 1 and the toothbrush head 2 rotate relative to each other in the circumferential direction by a certain angle, the first protrusion 41 and the second protrusion 42 simultaneously rotate with the brush handle 1 relative to the toothbrush head 2. At this time, the second protrusion 42 rotates circumferentially and is limited in the second groove section 222, thereby limiting the position of the second protrusion 42 in the longitudinal direction y; and the first protrusion 41 simultaneously rotates circumferentially and connects to the position-limiting structure 23, thereby limiting the position of the first protrusion 41 in the circumferential direction.

[0046] As described above, the second protrusion 42 cooperates with the second groove section 222, and the first protrusion 41 is connected to the limiting structure 23, which limits the relative movement of the toothbrush head 2 and the brush handle 1 along the longitudinal direction y, and also limits the relative rotation of the toothbrush head 2 and the brush handle 1 along the circumferential direction, thereby strengthening the connection reliability between the toothbrush head 2 and the brush handle 1 and improving the performance of the toothbrush.

[0047] In one embodiment, please refer to Figure 3 and Figure 4 , Figure 3 and Figure 4 The figure shows a view of the first limiting groove 22 formed on the inner wall of the toothbrush head 2. The inner wall of the toothbrush head 2 is formed with two first limiting walls 24, spaced apart and arranged opposite each other. The second groove section 222 terminates at one of the first limiting walls 24 at each end along the longitudinal direction y. When the second projection 42 and the handle 1 rotate simultaneously around the toothbrush head 2 in the circumferential direction, the second projection 42 rotates and enters the second groove section 222, abutting against the two first limiting walls 24. This results in the second projection 42 being confined to the two first limiting walls 24 along the longitudinal direction y, thereby limiting the relative movement of the toothbrush head 2 and the handle 1 along the longitudinal direction y and preventing the toothbrush head 2 and the handle 1 from loosening after prolonged use.

[0048] In one embodiment, see Figure 6 , Figure 6The figure shows a view of the limit block 4 being arranged on the outer wall of one end of the brush handle 1. The first protrusion 41 is connected to the second protrusion 42, and the first protrusion 41 and the second protrusion 42 are integrally formed, which strengthens the connection strength between the first protrusion 41 and the second protrusion 42, so that when the brush handle 1 rotates around the toothbrush head 2, the first protrusion 41 and the second protrusion 42 can rotate simultaneously. The length of the first groove section 221 extending in the circumferential direction is less than the length of the second groove section 222 extending in the circumferential direction. Correspondingly, the length of the first protrusion 41 extending in the circumferential direction is less than the length of the second protrusion 42 extending in the circumferential direction. The second protrusion 42 is connected to the first protrusion 41 along the longitudinal direction y, so that the first protrusion 41 and the second protrusion 42 can be inserted into the first groove section 221 along the longitudinal direction y, and the second protrusion 42 can fit into the second groove section 222.

[0049] Specifically, in this embodiment, the direction of relative circumferential rotation of the toothbrush head 2 and the brush handle 1 when installed is defined as a first rotational direction, and the direction of relative circumferential rotation of the toothbrush head 2 and the brush handle 1 when removed is defined as a second rotational direction, with the first rotational direction and the second rotational direction being opposite. The first protrusion 41 and the second protrusion 42 are connected to form an "L" shape, with the second protrusion 42 extending from one end of the first protrusion 41 in the second rotational direction; alternatively, the second protrusion 42 may also extend from one end of the first protrusion 41 in the first rotational direction.

[0050] Alternatively, optionally, in another embodiment, the first protrusion 41 is connected to the second protrusion 42 to form a “T” shape.

[0051] In one embodiment, please refer to Figure 3 and Figure 4 , Figure 3 and Figure 4 The figure shows a view of the first limiting groove 22 formed on the inner wall of the toothbrush head 2. The limiting structure 23 is provided on the inner wall of the toothbrush head 2 and is provided beside the first limiting groove 22. The limiting structure 23 includes a protrusion 231 provided beside the first limiting groove 22. The inner wall of the toothbrush head 2 is formed with a second limiting wall 25. The second limiting wall 25 is spaced apart from the protrusion 231, and the second limiting wall 25 and the protrusion 231 are spaced apart to form a second limiting groove 232. When the brush handle 1 and the toothbrush head 2 are installed, when the brush handle 1 and the toothbrush head 2 rotate relative to each other in the circumferential direction, the first protrusion 41 rotates in the circumferential direction and passes through the outer wall of the protrusion 231 to abut between the protrusion 231 and the second limiting wall 25. That is, the first protrusion 41 is circumferentially limited in the second limiting groove 232, thereby achieving circumferential limitation of the toothbrush head 2 and the brush handle 1.

[0052] Specifically, the second limiting groove 232 extends along the longitudinal direction y, and one end of the second limiting groove 232 along the longitudinal direction y extends to the outside of the opening of the connecting groove 21, while the other end of the second limiting groove 232 along the longitudinal direction y communicates with the second groove section 222. The protrusion 231 extends along the longitudinal direction y, and the outer wall of the other end of the protrusion 231 along the longitudinal direction y is coplanar with the wall surface of the first limiting wall 24. When the second protrusion 42 rotates circumferentially and abuts between the two first limiting walls 24, at least a portion of the second protrusion 42 can also simultaneously abut against the outer wall of one end of the protrusion 231, thereby enhancing the limiting strength of the second protrusion 42 along the longitudinal direction.

[0053] In one embodiment, please refer to Figure 3 and Figure 4 The limiting structure 23 includes at least two protrusions 231 disposed on either side of the first limiting groove 22, with the at least two protrusions 231 spaced circumferentially. A second limiting wall 25 is spaced apart from one of the protrusions 231, and the second limiting wall 25 and one of the protrusions 231 are spaced apart to form a second limiting groove 232. At least two protrusions 231 are spaced apart to form a third limiting groove 233, thereby forming at least one third limiting groove 233. The third limiting groove 23 also extends along the longitudinal direction y, and one end of the third limiting groove 233 along the longitudinal direction y extends outside the opening of the connecting groove 21, and the other end of the third limiting groove 233 along the longitudinal direction y is connected to the second groove section 222. When the toothbrush head 2 and the brush handle 1 rotate relative to each other in the circumferential direction, the first protrusion 41 can rotate circumferentially and pass through the outer wall of one protrusion 231 to abut between the two protrusions 231, that is, the first protrusion 41 is circumferentially limited within the third limiting groove 233. When there are more than two third limiting grooves 233 , at least two third limiting grooves 233 are arranged at intervals along the circumferential direction, and when the first protrusion 41 rotates along the circumferential direction, it can be alternately limited in each third limiting groove 233 along the circumferential direction.

[0054] Specifically, in this embodiment, the third limiting groove 233 and the second limiting groove 232 are spaced apart along the circumferential direction. When the first protrusion 41 rotates circumferentially, it can be alternately limited in the second limiting groove 232 and at least one third limiting groove 233 along the circumferential direction. In other words, the first protrusion 41 can be locked to different positions of the toothbrush head 2 along the circumferential direction. When the first protrusion 41 is limited in the second limiting groove 232 and when the first protrusion 41 is limited in the third limiting groove 233, the toothbrush head 2 and the handle 1 have different circumferential orientations. Therefore, the arrangement of the second limiting groove 232 and the third limiting groove 233 can meet different usage requirements. The user can adjust the circumferential orientation of the toothbrush head 2 and the handle 1 according to their specific usage needs, which significantly improves the convenience of using the toothbrush.

[0055] More specifically, in this embodiment, one end of the second groove segment 222 along the circumferential direction is connected to the first groove segment 221, and the other end of the second groove segment 222 along the circumferential direction ends at a third limiting wall 26. When the second protrusion 42 rotates along the circumferential direction, it can be limited to the third limiting wall 26 to limit the circumferential rotation stroke of the second protrusion 42, that is, to limit the circumferential rotation stroke of the toothbrush head 2 and the brush handle 1.

[0056] When the second limiting wall 25 is an extension of the third limiting wall 26 extending in the longitudinal direction y, that is, when the second limiting wall 25 and the third limiting wall 26 are located on the same plane, the first protrusion 41 and the second protrusion 42 are connected to form an "L" shape, and the second protrusion 42 is extended from one end of the first protrusion 41 along the second rotational direction to prevent the second protrusion 42 from interfering with the first protrusion 41 from circumferentially entering the second limiting groove 232 when the second protrusion 42 is limited by the third limiting wall 26. Of course, the second limiting wall 25 and the third limiting wall 26 can be arranged to be located on different planes. In this case, the second protrusion 42 can be arranged to be connected to the first protrusion 41 to form a "T" shape or an "L" shape. When the second protrusion 42 is connected to the first protrusion 41 to form the "L" shape, the second protrusion 42 extends along the first rotational direction or along the second rotational direction.

[0057] In one embodiment, see Figure 3 The outer wall of the protrusion 231 is provided with a plurality of inclined surfaces 2311, each of which extends along the longitudinal direction y. The plurality of inclined surfaces 2311 are sequentially connected along the circumferential direction to form the outer wall of the protrusion 231. When the first protrusion 41 rotates circumferentially and enters the second limiting groove 232 or the third limiting groove 233, the first protrusion 41 abuts against the inclined surfaces 2311 of the protrusion 231. The provision of the inclined surfaces 2311 strengthens the strength of the first protrusion 41 against one side of the protrusion 231, thereby enhancing the circumferential limiting strength of the toothbrush head 2 and the brush handle 1. Furthermore, when the first protrusion 41 rotates circumferentially and enters the second limiting groove 232 or the third limiting groove 233, the first protrusion 41 must pass through the outer wall of the protrusion 231. The provision of the inclined surfaces 2311 enhances the smoothness with which the first protrusion 41 enters the second limiting groove 232 or the third limiting groove 233.

[0058] Alternatively, in another embodiment, the outer wall of the protrusion 231 is set to a circular arc surface extending along the circumferential direction. When the first protrusion 41 rotates along the circumferential direction and enters the second limiting groove 232 or the third limiting groove 233, the first protrusion 41 needs to pass through the outer wall of the protrusion 231. The setting of the circular arc surface enhances the smoothness of the first protrusion 41 entering the second limiting groove 232 or the third limiting groove 233.

[0059] In one embodiment, see Figure 6One end of the brush handle 1 is provided with an extension shaft 3, which extends along the longitudinal direction y. The outer diameter of the extension shaft 3 is smaller than the outer diameter of the brush handle 1, making it easy for the extension shaft 3 to be inserted into the connecting groove 21 to achieve the connection between the toothbrush head 2 and the brush handle 1, and the outer diameter of the brush handle 1 is too small to affect the user's holding of the brush handle 1. The brush handle 1 and the extension shaft 3 are connected separately or integrally.

[0060] The limiting block 4 is disposed on the outer wall of the extension shaft 3. The first limiting groove 22 and the limiting structure 23 are both disposed within the toothbrush head 2. The first protrusion 41 and the second protrusion 42 of the limiting block 4 are integrally formed with the extension shaft 3, thereby improving the connection strength between the limiting block 4, the first protrusion 41, and the second protrusion 42, thereby better limiting the extension shaft 3 within the connecting groove 21.

[0061] Alternatively, in another embodiment, the first limiting groove 22 is opened on the outer wall of the extension shaft 3 , and the limiting structure 23 is also arranged on the outer wall of the extension shaft 3 , and the limiting block 4 is arranged on the inner wall of the toothbrush head 2 .

[0062] In one embodiment, please refer to Figure 6 and Figure 7 A first step 33 is formed on the outer circumferential wall of the extending shaft 3 along the circumferential direction, and a second step 213 is formed on the inner circumferential wall of the toothbrush head 2 along the circumferential direction. When the extending shaft 3 is inserted into the connecting groove 21 along the longitudinal direction y, the step surface of the first step 33 can be limited to the step surface of the second step 213 along the longitudinal direction y, thereby limiting the insertion stroke of the brush handle 1 into the toothbrush head 2 along the longitudinal direction y, thereby protecting the toothbrush.

[0063] Specifically, see Figure 6 The extending shaft 3 includes a first shaft segment 31 and a second shaft segment 32. One end of the first shaft segment 31 along the longitudinal direction y is connected to the brush handle 1, and the second shaft segment 32 is connected to the other end of the first shaft segment 31 along the longitudinal direction y. The outer diameter of the second shaft segment 32 is smaller than the outer diameter of the first shaft segment 31, so that the edge of the other end of the first shaft segment 31 forms a first step 33, and the first step 33 is arranged around the outer periphery of the second shaft segment 32.

[0064] See also Figure 7 The connecting groove 21 includes a third groove section 211 and a fourth groove section 212. The third groove section 211 communicates with the outside, and the fourth groove section 212 communicates with the third groove section 211. The first limiting groove 22 and the limiting structure 23 are both located in the third groove section 211. The inner diameter of the third groove section 211 is larger than the inner diameter of the fourth groove section 212. A second step 213 is formed at the connection between the third groove section 211 and the fourth groove section 212, so that the fourth groove section 212 forms a clearance groove for avoiding the second shaft section 32.

[0065] When the protruding shaft 3 is inserted into the connecting groove 21, the first shaft section 31 is inserted into the third groove section 211, and the step surface of the first step 33 is limited to the step surface of the second step 213, so that the second shaft section 32 is avoided in the fourth groove section 212, which limits the insertion stroke of the toothbrush head 2 into the connecting groove 21 along the longitudinal direction y while protecting the protruding shaft 3.

[0066] Among them, the inner diameter of the fourth groove section 212 is smaller than the inner diameter of the third groove section 211, which reduces the space occupied by the connection between the toothbrush head 2 and the extended shaft 3 inside the toothbrush head 2, and reserves a larger design space for the shape design of the toothbrush head 2.

[0067] The present application also provides a toothbrush including a brush body. The above embodiments have described the specific structure of the brush body in detail, which will not be repeated here.

[0068] The toothbrush can be an electric toothbrush or a conventional toothbrush. When the toothbrush is an electric toothbrush, the vibration motor of the toothbrush is disposed in the brush handle 1, and the extension shaft 3 is covered on the vibration shaft of the vibration motor so that the vibration shaft is inserted into the connecting groove 21 along with the extension shaft 3, thereby facilitating the vibration of the toothbrush head 2.

[0069] The toothbrush provided in the present application is provided with a limit block 4 on one of the toothbrush head 2 and the brush handle 1 of the brush body, and a first limit groove 22 and a limit structure 23 on the other. After one end of the brush body 1 is installed on the toothbrush head 2, the limit block 4 is limited in the first limit groove 22 along the longitudinal direction y, and the limit block is connected to the limit structure 23 to form a limit in the circumferential direction, thereby strengthening the connection strength between the toothbrush head 2 and the brush handle 1 of the brush body, limiting the locking position of the toothbrush head 2 and the brush handle 1, and preventing the toothbrush head 2 and the brush handle 1 from loosening. In addition, when installing the toothbrush head 2 and the brush handle 1, the brush handle 1 can be inserted into the toothbrush head 2 and then rotated around the toothbrush head 2. When removing the toothbrush head 2 and the brush handle 1, the brush handle 1 can be removed from the toothbrush head 2 by rotating the toothbrush head 2 and the brush handle 1. This makes the removal and installation of the toothbrush head 2 and the brush handle 1 very simple, improving the convenience of use of the toothbrush.

[0070] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A brush body comprising a toothbrush head and a brush handle both extending longitudinally, wherein one end of the toothbrush head is provided with a connecting groove for accommodating one end of the brush handle, characterized in that: The inner wall of the toothbrush head is provided with a first limiting groove, and one end of the brush handle is provided with a limiting block; or the outer wall of the brush handle is provided with a first limiting groove, and the inner wall of the toothbrush head is provided with a limiting block; the limiting block can be inserted into the first limiting groove in the longitudinal direction and rotated in the circumferential direction to form a longitudinal limiting fit with the first limiting groove; A limiting structure is provided beside the first limiting groove, and the limiting block can form a circumferential limiting fit with the limiting structure after rotation; The first limiting groove includes a first groove section and a second groove section that are interconnected, and the length of the second groove section along the circumferential direction is greater than the length of the first groove section along the circumferential direction; The limiting block includes a first protrusion and a second protrusion, wherein the second protrusion is connected to the first protrusion or is arranged beside the first protrusion; the second protrusion can be inserted from the first groove section into the second groove section and form a longitudinal limiting fit with the second groove section, and the first protrusion can form a circumferential limiting fit with the limiting structure; The limiting structure includes a convex portion provided beside the first limiting groove, a second limiting wall is formed on the inner wall of the toothbrush head, the convex portion and the second limiting wall are circumferentially spaced apart to form a second limiting groove, and the first protrusion is circumferentially limited in the second limiting groove; The outer wall of the convex portion is provided with a plurality of inclined surfaces, and the plurality of inclined surfaces are sequentially connected along the circumferential direction; or the outer wall of the convex portion is configured as an arc surface.

2. The brush body according to claim 1, wherein: Both ends of the second groove section in the longitudinal direction respectively terminate at a first limiting wall, and the second protrusion is tightly pressed between the two first limiting walls when inserted into the second groove section.

3. The brush body according to claim 1, wherein: The first bump is connected to the second bump, and the first bump and the second bump are connected to form an "L" shape or a "T" shape.

4. The brush body according to claim 1, wherein: The limiting structure includes at least two protrusions arranged at intervals along the circumferential direction, one of the protrusions is spaced apart from the second limiting wall to form the second limiting groove; at least two of the protrusions are spaced apart in pairs to form a third limiting groove, and the first protrusion can be alternately limited in the second limiting groove and the third limiting groove along the circumferential direction.

5. The brush body according to any one of claims 1 to 4, characterized in that: A protruding shaft is provided at one end of the brush handle, and the brush handle and the protruding shaft are connected in a split or integral manner; a limiting block or a first limiting groove is provided on an outer wall of the protruding shaft.

6. The brush body according to claim 5, characterized in that A first step is formed on the outer peripheral wall of the extending shaft along the circumferential direction, and a second step is formed on the inner peripheral wall of the toothbrush head along the circumferential direction. The first step is pressed against the second step in the longitudinal direction.

7. A toothbrush, characterized in that: The brush comprises the brush body according to any one of claims 1 to 6.

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