Toothbrush with rotatable brush head

Abstract

The utility model aims to provide a toothbrush with a rotatable brush head, which comprises the brush head with bristles and a brush handle, a rotating shaft is arranged on the brush head, a shaft sleeve is arranged at one end of the brush handle, and the rotating shaft is embedded in the shaft sleeve, so that one end of the brush handle is rotatably connected with the brush head; a plurality of limiting protrusions are arranged on the outer wall of the rotating shaft in the circumferential direction, and limiting grooves corresponding to the limiting protrusions are formed in the inner wall of the shaft sleeve. The rotating shaft is matched with the limiting groove in a clamping and fixing mode, and rotation is stopped when the limiting protrusion abuts against the limiting groove. A user can change the toothbrush into a T shape or a linear shape through the rotatable brush head according to requirements, so that the cleaning effect during tooth brushing is effectively enhanced; the structure is simple, the brush head and the brush handle can be connected only by inserting the rotating shaft on the brush head into the shaft sleeve in the assembling process, and the effect that the brush head is rotatable is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of daily necessities, and in particular relates to a toothbrush with a rotatable brush head. Background Art

[0002] For a long time, ordinary toothbrushes used by people are generally of an "I"-shaped structure, that is, the length direction of the brush handle is parallel to the length direction of the brush head. For this type of "I"-shaped toothbrush, the brush head and the brush handle are both fixed structures. The fixed toothbrush head can brush at a limited angle and position when in use, which will result in poor cleaning effect, insufficient cleaning force and inconvenience in use. Toothbrushes with relative rotation angles of the brush head and the brush handle are available on the market, but other structures are more complicated, and the rotation angle of the brush head relative to the brush handle cannot be fixed, the brush head is prone to slipping during use, and the oral cleaning experience is poor. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a toothbrush with a rotatable brush head, wherein the brush head and the brush handle can form a certain angle and are relatively fixed, thereby solving the deficiency that the existing rotatable brush head cannot have a fixed rotation angle relative to the brush handle.

[0004] The toothbrush with a rotatable brush head provided by the utility model comprises a brush head with bristles and a brush handle, the brush head is provided with a rotating shaft, one end of the brush handle is provided with a shaft sleeve, the rotating shaft is embedded in the shaft sleeve, so that one end of the brush handle is rotatably connected to the brush head; a plurality of limiting protrusions are provided on the outer wall of the rotating shaft in the circumferential direction, and a limiting groove corresponding to the limiting protrusions is provided on the inner wall of the shaft sleeve; the rotating shaft is clamped in cooperation with the limiting groove, and the rotation stops when the limiting protrusion abuts against the limiting groove.

[0005] As a further solution of the utility model, two limiting protrusions are symmetrically arranged on the outer wall of the rotating shaft along the circumferential direction, and four limiting grooves are arranged in an array along the circumferential direction on the inner wall of the sleeve.

[0006] As a further solution of the utility model, a conical clamping block is provided at one end of the rotating shaft away from the brush head, and a clamping ring is provided on the inner wall of the sleeve. When the rotating shaft and the sleeve are assembled, the conical clamping block passes through the clamping ring and is rotatably connected to the clamping ring; the limiting groove is arranged on the inner wall of the clamping ring.

[0007] As a further solution of the utility model, a L-shaped hollow is provided in the middle of the rotating shaft, dividing the rotating shaft into two halves, so as to reduce the volume of the conical block when the rotating shaft is assembled into the shaft sleeve. Specifically, during the assembly process of the brush head and the brush handle, when the rotating shaft is assembled into the shaft sleeve, the hollow of the conical block is reduced, thereby reducing the volume of the conical block, that is, it is more convenient to pass the conical block through the clamping ring and rotatably snap-connect with the clamping ring.

[0008] As a further solution of the utility model, the surface of the limiting protrusion is in the shape of a convex arc surface, and the surface of the limiting groove is in the shape of a concave arc surface.

[0009] When in use, the brush head can be rotated, and the limiting protrusion can slide out of the limiting groove. When it is rotated 90 degrees in the clockwise or counterclockwise direction, this operation makes the initial limiting groove of the limiting protrusion lock with another adjacent limiting groove, so that the brush head can be rotated to be perpendicular to the length direction of the brush handle. The same operation can also be used to continue to rotate 90 degrees in the clockwise or counterclockwise direction to make the brush head rotate parallel to the length direction of the brush handle, so as to facilitate the user to clean the oral cavity in multiple dimensions.

[0010] The utility model has the following advantages and effects: the user can change the toothbrush into a T-shape or a straight shape by the rotatable brush head according to the needs of the user, which effectively enhances the cleaning effect when brushing teeth; the structure is simple, and the assembly process only requires the rotating shaft on the brush head to be plugged into the shaft sleeve to connect the brush head and the brush handle, and the rotatable effect of the brush head can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the utility model;

[0012] Figure 2 It is a partial structural schematic diagram of a preferred embodiment of the utility model;

[0013] Figure 3 It is a schematic diagram of the structure of the preferred embodiment of the utility model when the state changes;

[0014] Figure 4 It is a schematic diagram of structural separation of a preferred embodiment of the utility model.

[0015] The diagrams include: 1. brush head; 2. brush handle; 3. rotating shaft; 4. bushing; 30. limiting protrusion; 40. limiting groove; 5. conical clamping block; 6. clamping ring; 31. straight hollow. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] It should be noted that, in the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0018] At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] like Figure 1-Figure 4 The toothbrush with a rotatable brush head shown in the figure comprises a brush head 1 with bristles and a brush handle 2. The brush head 1 is provided with a rotating shaft 3. One end of the brush handle 2 is provided with a shaft sleeve 4. The rotating shaft 3 is embedded in the shaft sleeve 4 so that one end of the brush handle 2 is rotatably connected to the brush head 1. Two limiting protrusions 30 are symmetrically arranged on the outer wall of the rotating shaft 3 along the circumferential direction. Four limiting grooves 40 are arranged in a circumferential array on the inner wall of the shaft sleeve 4. The rotating shaft 3 is clamped and matched with the limiting grooves 40. The rotation stops when the limiting protrusions 30 abut against the limiting grooves 40.

[0020] In some embodiments, four limiting protrusions 30 are arranged in a circumferential array on the outer wall of the rotating shaft 3, and two limiting grooves 40 are symmetrically arranged in a circumferential direction on the inner wall of the sleeve 4; in some embodiments, four limiting protrusions 30 are arranged in a circumferential array on the outer wall of the rotating shaft 3, and four limiting grooves 40 are arranged in a circumferential array on the inner wall of the sleeve 4.

[0021] In this preferred embodiment, a conical clamping block 5 is provided at the end of the rotating shaft 3 away from the brush head 1, and a clamping ring 6 is provided on the inner wall of the sleeve 4. When the rotating shaft 3 and the sleeve 4 are assembled, the conical clamping block 5 passes through the clamping ring 6 and is rotatably connected to the clamping ring 6; the limiting groove 40 is arranged on the inner wall of the clamping ring 6.

[0022] In this preferred embodiment, a L-shaped hollow 31 is provided in the middle of the rotating shaft 3, dividing the rotating shaft 3 into two halves, so as to reduce the volume of the conical block 5 when the rotating shaft 3 is assembled into the shaft sleeve 4. In some embodiments, the L-shaped hollow 31 can also be replaced by a cross-shaped, Y-shaped, or M-shaped hollow. Specifically, during the assembly process of the brush head 1 and the brush handle 2, when the rotating shaft 3 is assembled into the shaft sleeve 4, the hollow of the conical block 5 is reduced, thereby reducing the volume of the conical block 5, that is, it is more convenient to pass the conical block 5 through the snap ring 6 and rotatably snap-connect with the snap ring 6.

[0023] In this preferred embodiment, the surface of the limiting protrusion 30 is convex arc-shaped, and the surface of the limiting groove 40 is concave arc-shaped. Since the toothbrush is made of plastic material, the plastic has elastic characteristics, so the limiting protrusion 30 and the limiting groove 40 can be combined or separated by interference fit.

[0024] When in use, the brush head 1 can be rotated, and the limiting protrusion 30 can slide out of the limiting groove 40. When it is rotated 90 degrees in the clockwise or counterclockwise direction, this operation makes the initial limiting groove 40 of the limiting protrusion 30 lock with another adjacent limiting groove 40, so that the brush head 1 can be rotated to be perpendicular to the length direction of the brush handle 2. The same operation can also be continued to rotate 90 degrees in the clockwise or counterclockwise direction to make the brush head 1 rotated to be parallel to the length direction of the brush handle 2, so that the user can clean the oral cavity in multiple dimensions.

[0025] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A toothbrush with a rotatable brush head, comprising a brush head with bristles and a brush handle, characterized in that: The brush head is provided with a rotating shaft, and one end of the brush handle is provided with a shaft sleeve, the rotating shaft is embedded in the shaft sleeve, so that one end of the brush handle is rotatably connected to the brush head; a plurality of limiting protrusions are provided on the outer wall of the rotating shaft along the circumferential direction, and a limiting groove corresponding to the limiting protrusion is provided on the inner wall of the shaft sleeve; the rotating shaft is clamped in cooperation with the limiting groove, and the rotation stops when the limiting protrusion abuts against the limiting groove.

2. The toothbrush with a rotatable brush head according to claim 1, characterized in that: Two limiting protrusions are symmetrically arranged on the outer wall of the rotating shaft along the circumferential direction, and four limiting grooves are arranged in an array along the circumferential direction on the inner wall of the sleeve.

3. The toothbrush with a rotatable brush head according to claim 1, characterized in that: A conical clamping block is provided at one end of the rotating shaft away from the brush head, and a clamping ring is provided on the inner wall of the sleeve. When the rotating shaft and the sleeve are assembled, the conical clamping block passes through the clamping ring and is rotatably buckled with the clamping ring; the limiting groove is arranged on the inner wall of the clamping ring.

4. The toothbrush with a rotatable brush head according to claim 3, characterized in that: A L-shaped hollow is provided in the middle of the rotating shaft, dividing the rotating shaft into two halves, so as to reduce the volume of the conical clamping block when the rotating shaft is assembled into the shaft sleeve.

5. The toothbrush with a rotatable brush head according to claim 1, characterized in that: The surface of the limiting protrusion is in the shape of a convex arc surface, and the surface of the limiting groove is in the shape of a concave arc surface.

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