Interdental brush with switchable mode

Abstract

This utility model relates to the field of interdental brush technology, specifically to an interdental brush with switchable modes, including a brush head, a brush handle, and a connecting handle. The connecting handle is connected to a push-pull handle, and a switching part is provided on the connecting handle. The switching part includes a movable block and a locking mechanism at the end of the connecting handle. The locking mechanism includes a locking groove, in which I-shaped protrusions and L-shaped protrusions are provided vertically distributed. The two locking grooves are staggered vertically. A locking plate is provided on the outside of the locking groove, and a limiting plate is provided on the locking plate. Two L-shaped locking claws are provided on the side of the push-pull handle facing the locking groove. The locking claws include a vertical plate and a horizontal plate. The horizontal plate has a groove that engages with the I-shaped protrusions and L-shaped protrusions. The user only needs to push and pull with one finger. When holding the brush handle, the thumb pushes / pulls the protrusion of the push-pull handle to complete the switching between I-type and L-type modes. There is no need for complicated actions such as disassembly or rotation, making it convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of interdental gap brush technology, specifically to an interdental gap brush with switchable modes. Background Technology

[0002] Interdental brushes (also known as interdental brushes or gap brushes) are oral care tools specifically designed for cleaning the interproximal surfaces and gaps between teeth. They are especially suitable for people with wide gaps between teeth, receding gums, or those wearing orthodontic appliances. The brush head and handle of an interdental brush are L-shaped or I-shaped. The L-shape is suitable for cleaning at multiple angles (such as around orthodontic brackets), while the I-shape is suitable for straight gaps between teeth. Traditional interdental brushes have an inadjustable angle between the brush head and handle, making it difficult to adapt to the different operating angle requirements of the anterior and posterior molar areas, and they also have blind spots. When cleaning posterior teeth, the handle needs to be forcibly bent, which can cause bristle deformation or even damage to the gums. Therefore, it is necessary to design an interdental brush that can switch between L-shaped and I-shaped designs for user convenience. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a tooth gap brush with switchable modes, which solves the problems existing in the background art.

[0004] To solve the above problems, the technical solution of this utility model is as follows: a mode-switchable interdental brush, including a brush head and a brush handle, a connecting handle is provided between the brush head and the brush handle, the connecting handle is connected to a push-pull handle, and a switching part is provided on the connecting handle to cooperate with the push-pull handle to realize the switching between I-type and L-type modes.

[0005] Furthermore, the switching part includes a movable block located at the end of the connecting handle and a locking mechanism located on one side of the connecting handle, the movable block being connected to the push-pull handle.

[0006] Furthermore, the locking mechanism includes two locking grooves formed in the connecting handle, with I-shaped protrusions and L-shaped protrusions distributed vertically in the locking grooves. The two locking grooves are staggered vertically, and a locking plate is provided on the outside of the locking grooves. A limiting plate is provided on the locking plate.

[0007] Furthermore, two L-shaped locking claws are provided on the side of the push-pull handle facing the locking groove. The locking claws include a vertical plate and a horizontal plate, and the horizontal plate is provided with a slot that engages with the I-shaped convex key and the L-shaped convex key.

[0008] Furthermore, the movable block is square. In the Type I state, a square groove is formed between the movable block and the connecting handle to accommodate the movable block. The connecting handle and the push-pull handle are connected diagonally to the movable block.

[0009] Furthermore, the push-pull handle is provided with several protrusions to increase friction.

[0010] Furthermore, the brush head includes bristles and a fixed seat disposed on the movable block.

[0011] Furthermore, the brush handle, connecting handle, and push-pull handle are made of one of the following materials: PP, ABS, PVC, PS, PMMA, and AS.

[0012] Compared with the prior art, this utility model has the following advantages: the user only needs to push and pull with one finger. When holding the brush handle, the thumb pushes / pulls the protrusion of the push-pull handle to complete the switching between I-type and L-type modes. There is no need for complicated actions such as disassembly or rotation, making it convenient to use; the convex key and the slot engage precisely with the I-type convex key and the L-type convex key and the locking claw slot to form a mechanical latch. Combined with the fast rotation, it does not slip when subjected to cleaning force; the limiting plate of the locking plate restricts the stroke of the push-pull handle to prevent the locking claw from disengaging from the locking groove and ensures that the angle is absolutely stable after switching. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of one side of the push-pull handle of this utility model; Figure 3 This is a schematic diagram of the L-shaped configuration of this utility model.

[0014] In the diagram: 1-Brush head, 11-Brush bristles, 12-Fixing base, 2-Brush handle, 3-Connecting handle, 30-Square groove, 31-Moving block, 32-Locking groove, 321-I-type convex key, 322-L-type convex key, 33-Locking plate, 331-Limiting plate, 4-Push-pull handle, 41-Locking claw, 411-Vertical plate, 412-Horizontal plate, 413-Slot, 42-Protrusion. Detailed Implementation

[0015] like Figure 1-3 As shown, a mode-switchable interdental brush consists of a brush head 1, a brush handle 2, a connecting handle 3, and a push-pull handle 4. The switching mechanism between the connecting handle 3 and the push-pull handle 4 allows for switching between I-type (brush head 1 and brush handle 2 are collinear, suitable for front teeth) and L-type (brush head 1 and brush handle 2 form an angle, suitable for back teeth). The brush head 1 is used to clean between teeth and is connected to the end assembly (movable block 31) of the connecting handle 3 via the fixing seat 12. The brush handle 2 is for the user to hold and is either integrally formed with the rear end of the connecting handle 3 or detachably connected. The connecting handle 3 connects the brush head 1 and the brush handle 2. The top is provided with a movable block 31, and the side wall is provided with a locking mechanism. The locking mechanism includes a locking groove 32, an I-shaped protruding key 321, an L-shaped protruding key 322, a locking plate 33, and a limiting plate 331. like Figure 2As shown, the push-pull handle 4 slides along the axis of the connecting handle 3, with anti-slip protrusions 42 on the surface and locking claws 41 that cooperate with the locking groove 32 on the inner side.

[0016] like Figure 1 As shown, the movable block 31 is square in shape, and a square groove 30 is opened between the connecting handle 3 and the movable block 31. The square movable block 31 is used to assist in limiting the movement, making the movable block 31 more stable. In the I-type mode, the movable block 31 is disengaged from the square groove 30, so that the brush head 1 and the brush handle 2 extend in the same line.

[0017] like Figure 1 As shown, two vertically staggered locking grooves 32 are provided in the side wall of the connecting handle 3. I-shaped convex key 321 and L-shaped convex key 322 are fixed in the grooves respectively. The cross section of the convex key can be designed as trapezoidal to facilitate the engagement and disengagement of the slot 413.

[0018] A locking plate 33 is provided on the outside of the locking groove 32, and a limiting plate 331 extends from the locking plate 33 to limit the sliding stroke of the push-pull handle 4 and prevent the locking claw 41 from disengaging from the locking groove 32.

[0019] like Figure 2 As shown, the locking claw 41 is composed of a vertical plate 411 (vertically connected to the main body of the push-pull handle 4) and a horizontal plate 412 (parallel to the surface of the connecting handle 3). The horizontal plate 412 has a slot 413 on the side facing the locking groove 32. The shape of the slot 413 matches the I-shaped protrusion key 321 and the L-shaped protrusion key 322 to ensure no gap during engagement.

[0020] The bristles 11 are fixed to the base 12 by a bristle implantation process. The base 12 and the movable block 31 can be detachably connected for easy replacement.

[0021] The brush handle 2, connecting handle 3, and push-pull handle 4 are made of one of the following materials: PP, ABS, PVC, PS, PMMA, and AS. If composite materials are required, they can be achieved through secondary injection molding. For example, the surface of the push-pull handle 4 can be coated with TPE to improve the feel.

[0022] When using Type I pattern (anterior teeth cleaning state) The movable block 31 disengages from the square groove 30, and the locking claw 41's slot 413 engages with the I-shaped protrusion key 321, causing the brush head 1 and brush handle 2 to extend collinearly. The I-shaped protrusion key 321 restricts the sliding of the push-pull handle 4 through the slot 413, preventing the movable block 31 from flipping and maintaining its collinear posture.

[0023] Switch to L-shaped mode (posterior teeth cleaning mode). The user holds the brush handle 2 and presses the protrusion 42 of the push-pull handle 4 with their thumb, pushing the push-pull handle 4 to slide downward along the axis of the connecting handle 3. The locking claw 41 moves with the push-pull handle 4, and the slot 413 disengages from the I-shaped protrusion 321. The sliding of the push-pull handle 4 causes the movable block 31 to flip. When the movable block 31 flips to the L-shaped angle, the slot 413 of the locking claw 41 engages with the L-shaped protrusion 322, and the limiting plate 331 prevents the push-pull handle 4 from continuing to slide, thus completing the L-shaped mode locking.

[0024] Switch back to Type I mode and repeat the process.

[0025] This application achieves a significant breakthrough in cleaning adaptability, ease of operation, and structural stability by innovating mechanical structure and functional design, compared to traditional single-angle interdental brushes, enabling convenient switching between L-shaped and I-shaped designs.

[0026] The above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mode-switchable interdental brush, comprising a brush head and a brush handle, characterized in that: A connecting handle is provided between the brush head and the brush handle, and the connecting handle is connected to a push-pull handle. A switching part is provided on the connecting handle to cooperate with the push-pull handle to realize the switching between I-type and L-type modes. The switching part includes a movable block located at the end of the connecting handle and a locking mechanism located on one side of the connecting handle. The movable block is connected to the push-pull handle.

2. The mode-switchable interdental brush according to claim 1, characterized in that: The locking mechanism includes two locking grooves formed in the connecting handle. I-shaped protrusions and L-shaped protrusions are provided in the locking grooves, which are arranged vertically. The two locking grooves are staggered vertically. A locking plate is provided on the outside of the locking grooves, and a limiting plate is provided on the locking plate.

3. A mode-switchable interdental brush according to claim 2, characterized in that: Two L-shaped locking claws are provided on the side of the push-pull handle facing the locking groove. The locking claws include a vertical plate and a horizontal plate. The horizontal plate is provided with a slot that engages with the I-shaped convex key and the L-shaped convex key.

4. A mode-switchable interdental brush according to claim 3, characterized in that: The movable block is square. In the Type I state, a square groove is formed between the movable block and the connecting handle to accommodate the movable block. The connecting handle and the push-pull handle are connected to the movable block diagonally.

5. A mode-switchable interdental brush according to claim 1, characterized in that: The push-pull handle has several protrusions to increase friction.

6. A mode-switchable interdental brush according to claim 1, characterized in that: The brush head includes bristles and a fixed base mounted on the movable block.

7. A mode-switchable interdental brush according to claim 1, characterized in that: The brush handle, connecting handle, and push-pull handle are made of one of the following materials: PP, ABS, PVC, PS, PMMA, and AS.

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