Toothbrush with switchable bristle density
By designing a toothbrush with a detachable brush head, the problem of the inability to adjust the bristle density is solved, enabling flexible replacement of the brush head and continuous cleaning effect, reducing usage costs and avoiding bristle contamination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-07
AI Technical Summary
Existing toothbrushes have a fixed bristle density that cannot be replaced individually, forcing users to replace the entire toothbrush, increasing usage costs, and the bristle density cannot be adjusted if it is unsuitable.
A toothbrush with switchable bristle density was designed. The toothbrush head can be detached and replaced by disassembling the components. It is combined with a timer and an alarm to remind you when to replace it, and a suction cup is used to prevent contamination.
It allows for flexible replacement of toothbrush heads, saving on usage costs, improving oral cleaning effectiveness, avoiding bristle contamination, and reminding users to replace them appropriately to maintain cleaning results.
Smart Images

Figure CN224084858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of daily necessities technology, specifically a toothbrush with switchable bristle density. Background Technology
[0002] A toothbrush is a cleaning product, a handle-type brush used to apply toothpaste to the brush and then repeatedly brush all parts of the teeth to maintain oral hygiene.
[0003] Toothbrush bristle density is usually fixed. Different users have different requirements for bristle density. However, existing toothbrushes and toothbrush heads are usually set as a whole. When users find that the bristle density is not suitable, they need to replace the toothbrush and toothbrush head as a whole. They cannot replace the toothbrush head separately, which increases the cost of using the toothbrush.
[0004] Therefore, we propose a toothbrush with switchable bristle density to address the problems mentioned above. Utility Model Content
[0005] The purpose of this invention is to provide a toothbrush with switchable bristle density to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a toothbrush with switchable bristle density, comprising a toothbrush head and a toothbrush handle located on the other side of the toothbrush head, a connecting block A fixedly installed on the other side of the toothbrush head, a connecting shell fixedly installed on one side of the toothbrush handle, and several rubber blocks fixedly installed on the top of the toothbrush handle near one side, slots being provided on both the front and rear sides of the connecting block A, and a disassembly assembly being provided between the toothbrush head and the connecting shell;
[0007] The disassembly assembly includes mounting boxes fixedly installed on the front and rear sides of the connecting shell near the other side, and threaded tubes that movably pass through the adjacent mounting boxes. A knob is fixedly installed at the other end of each threaded tube. A threaded rod is threadedly connected to the inner cavity of each threaded tube. A movable plate is fixedly installed at one end of each threaded rod. An inclined groove is opened on the top of each movable plate. A vertical rod movably passes through the inner cavity of each inclined groove. A connecting block B is fixedly installed at the bottom end of each vertical rod. An insert block is fixedly installed on the opposite side of each connecting block B. The insert blocks movably pass through the inner cavity of the toothbrush handle and are inserted into the inner cavity of the adjacent slot.
[0008] Preferably, a limiting telescopic rod B is fixedly installed on the opposite side of the connecting block B near both the front and rear sides, and the ends of the limiting telescopic rod B are fixedly connected to the inner cavity sidewalls of the adjacent mounting boxes respectively. A limiting telescopic rod A is fixedly installed on one side of the movable plate near both the front and rear sides, and the ends of the limiting telescopic rod A are fixedly connected to the inner cavity sidewalls of the adjacent mounting boxes respectively.
[0009] Preferably, dovetail blocks are fixedly installed on both the front and rear sides of the connecting block A, and dovetail grooves are opened on both the front and rear sides of the inner cavity of the connecting shell, with the dovetail blocks slidingly connected in the inner cavities of adjacent dovetail grooves respectively.
[0010] Preferably, a connecting hole is provided on the other side of the toothbrush handle, the inner cavity of the connecting hole is provided with an internal thread, and a threaded post is threadedly connected to the inner cavity of the connecting hole, with a suction cup fixedly installed at the end of the threaded post.
[0011] Preferably, a placement groove is provided on the front side of the toothbrush handle near the other side, a micro battery is fixedly installed at the bottom of the inner cavity of the placement groove near one side, a timer is fixedly installed at the bottom of the inner cavity of the placement groove near the middle position, an alarm is fixedly installed at the bottom of the inner cavity of the placement groove near the other side, a display screen is installed on the top of the toothbrush handle, and two control buttons are fixedly installed on the top of the toothbrush handle near the other side.
[0012] Preferably, the micro battery is electrically connected to the timer and the alarm respectively, the timer is electrically connected to the alarm, and the timer is electrically connected to the display screen.
[0013] Preferably, a cover plate is provided on the front side of the toothbrush handle, and bolts are movably inserted through the front side of the cover plate near the four sides. Several threaded blind holes are opened on the front side of the toothbrush handle near the other side. The threaded blind holes are all located on the outer periphery of the placement groove, and the ends of the bolts are threaded into the inner cavities of adjacent threaded blind holes.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. With the cooperation of the disassembly components, the rotation of the two threaded tubes allows the threaded rods connected to the inner cavities of adjacent threaded tubes to move the movable plate. With the cooperation of the inclined groove and the vertical rod, the adjacent connecting block B can be moved to the opposite side, thereby allowing the insert fixed on the adjacent connecting block B to move to the opposite side, away from the inner cavity of the adjacent slot. This facilitates the disassembly and replacement of the toothbrush head, making it easier to replace the toothbrush head later without having to replace the whole toothbrush, thus saving on the cost of using the toothbrush.
[0016] 2. By setting up connecting holes, threaded posts, and suction cups, the toothbrush handle can be kept in a vertical position, which can prevent the toothbrush head from directly contacting the countertop and getting contaminated, thus affecting its subsequent use.
[0017] 3. By setting a timer and display screen, users can easily monitor the toothbrush usage time in real time. When the toothbrush head has been used for a certain period of time, the alarm will start to remind the user to replace the toothbrush head, thereby improving the subsequent oral cleaning effect of the toothbrush head. Attached Figure Description
[0018] Figure 1This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0019] Figure 2 Exploded view of the cover plate, toothbrush handle and suction cup of this utility model;
[0020] Figure 3 This is a top sectional view of the toothbrush head, connecting shell, and connecting block of this utility model;
[0021] Figure 4 This is a top sectional view of the toothbrush handle and mounting box of this utility model.
[0022] In the diagram: 1. Toothbrush head; 2. Connecting shell; 3. Rubber block; 4. Toothbrush handle; 5. Display screen; 6. Control button; 7. Cover plate; 8. Bolt; 9. Alarm; 10. Timer; 11. Miniature battery; 12. Placement slot; 13. Connecting hole; 14. Threaded post; 15. Suction cup; 16. Connecting block A; 17. Dovetail block; 18. Dovetail groove; 19. Slot; 20. Mounting box; 21. Threaded tube; 22. Threaded rod; 23. Knob; 24. Movable plate; 25. Inclined groove; 26. Vertical rod; 27. Limiting telescopic rod A; 28. Limiting telescopic rod B; 29. Connecting block B; 30. Insert block. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example 1
[0025] Please see Figure 1-4 A toothbrush with switchable bristle density includes a toothbrush head 1 and a toothbrush handle 4 located on the other side of the toothbrush head 1. A connecting block A16 is fixedly installed on the other side of the toothbrush head 1. A connecting shell 2 is fixedly installed on one side of the toothbrush handle 4. Several rubber blocks 3 are fixedly installed on the top of the toothbrush handle 4 near one side. Slots 19 are provided on both the front and rear sides of the connecting block A16. A disassembly component is provided between the toothbrush head 1 and the connecting shell 2.
[0026] The disassembly assembly includes a mounting box 20 fixedly installed on the front and rear sides of the connecting shell 2 near the other side, and a threaded tube 21 that moves through the adjacent mounting box 20. A knob 23 is fixedly installed at the other end of each threaded tube 21. A threaded rod 22 is threadedly connected to the inner cavity of each threaded tube 21. A movable plate 24 is fixedly installed at one end of each threaded rod 22. A slanted groove 25 is opened on the top of each movable plate 24. A vertical rod 26 moves through the inner cavity of each slanted groove 25. A connecting block B29 is fixedly installed at the bottom end of each vertical rod 26. An insert block 30 is fixedly installed on the opposite side of each connecting block B29. The insert block 30 moves through the inner cavity of the toothbrush handle 4 and is inserted into the inner cavity of the adjacent slot 19.
[0027] Specifically, with the cooperation of the disassembly components, the rotation of the two threaded tubes 21 allows the threaded rod 22, which is threaded into the inner cavity of the adjacent threaded tubes 21, to move the movable plate 24. With the cooperation of the inclined groove 25 and the vertical rod 26, the adjacent connecting block B29 can move to the opposite side, thereby allowing the insert block 30 fixed on the adjacent connecting block B29 to move to the opposite side, away from the inner cavity of the adjacent slot 19. This facilitates the disassembly and replacement of the toothbrush head 1, making it easier to replace the toothbrush head 1 without replacing the entire toothbrush, thus saving on the cost of using the toothbrush.
[0028] On the opposite side of the connecting block B29, near the front and rear sides, limit telescopic rods B28 are fixedly installed. The ends of the limit telescopic rods B28 are fixedly connected to the inner cavity sidewalls of the adjacent mounting box 20. On one side of the movable plate 24, near the front and rear sides, limit telescopic rods A27 are fixedly installed. The ends of the limit telescopic rods A27 are fixedly connected to the inner cavity sidewalls of the adjacent mounting box 20.
[0029] Specifically, the limiting telescopic rod B28 can limit the movement of the connecting block B29, and the limiting telescopic rod A27 can limit the movement of the movable plate 24.
[0030] Dovetail blocks 17 are fixedly installed on both the front and rear sides of the connecting block A16. Dovetail grooves 18 are opened on both the front and rear sides of the inner cavity of the connecting shell 2, and the dovetail blocks 17 are slidably connected in the inner cavity of the adjacent dovetail grooves 18.
[0031] Specifically, by setting the dovetail groove 18 and the dovetail block 17, the connecting block A16 can be limited when it moves inside the connecting shell 2.
[0032] Example 2
[0033] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 2 and Figure 3A connecting hole 13 is provided on the other side of the toothbrush handle 4. The inner cavity of the connecting hole 13 is provided with an internal thread, and a threaded post 14 is threadedly connected to the inner cavity of the connecting hole 13. A suction cup 15 is fixedly installed at the end of the threaded post 14.
[0034] Specifically, by setting the connecting hole 13, the threaded post 14 and the suction cup 15, the toothbrush handle 4 can be kept in a vertical position, which can prevent the toothbrush head 1 from directly contacting the countertop and being contaminated, thus affecting its subsequent use.
[0035] A placement slot 12 is provided on the front side of the toothbrush handle 4 near the other side. A micro battery 11 is fixedly installed at the bottom of the inner cavity of the placement slot 12 near one side. A timer 10 is fixedly installed at the bottom of the inner cavity of the placement slot 12 near the middle position. An alarm 9 is fixedly installed at the bottom of the inner cavity of the placement slot 12 near the other side. A display screen 5 is installed on the top of the toothbrush handle 4. Two control buttons 6 are fixedly installed on the top of the toothbrush handle 4 near the other side. The micro battery 11 is electrically connected to the timer 10 and the alarm 9 respectively. The timer 10 is electrically connected to the alarm 9 and the display screen 5.
[0036] Specifically, by setting the timer 10 and display screen 5, users can conveniently monitor the toothbrush usage time in real time. When the toothbrush head 1 has been used for a certain period of time, the alarm 9 will start to remind the user to replace the toothbrush head 1, thereby improving the subsequent oral cleaning effect of the toothbrush head 1.
[0037] A cover plate 7 is provided on the front side of the toothbrush handle 4. Bolts 8 are movably inserted through the front side of the cover plate 7 near the four sides. Several threaded blind holes are opened on the front side of the toothbrush handle 4 near the other side. The threaded blind holes are all located on the outer periphery of the placement groove 12. The ends of the bolts 8 are threaded into the inner cavities of adjacent threaded blind holes.
[0038] Specifically, by setting bolt 8 to connect with threaded blind hole, the cover plate 7 can be easily disassembled.
[0039] Working principle: When using this invention, if the toothbrush head 1 needs to be disassembled, the user can rotate two knobs 23. The threaded tubes 21 fixed to the adjacent knobs 23 cause the threaded rods 22 connected to the adjacent threaded tubes 21 to rotate, thereby pushing the adjacent movable plates 24 to one side under the limitation of the two adjacent limiting telescopic rods A27. With the cooperation of the inclined groove 25, the adjacent connecting blocks B29 can move to the opposite side under the limitation of the two adjacent limiting telescopic rods B28, connected by the vertical rod 26. This allows the insert blocks 30 fixed to the adjacent connecting blocks B29 to move away from the inner cavity of the adjacent slot 19. The toothbrush head 1 can then be removed from the inner cavity of the connecting shell 2 for easy replacement without the need for a complete replacement, thus saving on toothbrush usage costs. After brushing, the toothbrush head 1 can be held vertically by the suction cup 15, which facilitates the rapid drying of the toothbrush. The suction cup 15 is easily replaced by the connecting hole 13 and the threaded post 14, improving the stability of the toothbrush handle 4. During use, the toothbrush head 1 can be viewed in real time by the display screen 5. After a certain period of use, the alarm 9 will activate to remind the user to replace the toothbrush head 1, thus improving the subsequent oral cleaning effect of the toothbrush head 1.
[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A toothbrush with switchable bristle density, comprising a toothbrush head (1) and a toothbrush handle (4) located on the other side of the toothbrush head (1), characterized in that: A connecting block A (16) is fixedly installed on the other side of the toothbrush head (1), a connecting shell (2) is fixedly installed on one side of the toothbrush handle (4), and several rubber blocks (3) are fixedly installed on the top of the toothbrush handle (4) near one side. Slots (19) are provided on both the front and rear sides of the connecting block A (16). A disassembly assembly is provided between the toothbrush head (1) and the connecting shell (2). The disassembly assembly includes a mounting box (20) fixedly installed on the front and rear sides of the connecting shell (2) near the other side, and a threaded tube (21) that movably passes through the adjacent mounting box (20). The other side of the threaded tube (21) A knob (23) is fixedly installed at each end. A threaded rod (22) is threadedly connected to the inner cavity of the threaded tube (21). A movable plate (24) is fixedly installed at one end of the threaded rod (22). An inclined groove (25) is opened at the top of the movable plate (24). A vertical rod (26) is movably passed through the inner cavity of the inclined groove (25). A connecting block B (29) is fixedly installed at the bottom end of the vertical rod (26). An insert block (30) is fixedly installed on the opposite side of the connecting block B (29). The insert block (30) movably passes through the inner cavity of the toothbrush handle (4) and is inserted into the inner cavity of the adjacent slot (19).
2. The toothbrush with switchable bristle density according to claim 1, characterized in that: On the opposite side of the connecting block B (29), near the front and rear sides, a limiting telescopic rod B (28) is fixedly installed. The ends of the limiting telescopic rod B (28) are fixedly connected to the inner cavity sidewall of the adjacent mounting box (20). On one side of the movable plate (24), near the front and rear sides, a limiting telescopic rod A (27) is fixedly installed. The ends of the limiting telescopic rod A (27) are fixedly connected to the inner cavity sidewall of the adjacent mounting box (20).
3. A toothbrush with switchable bristle density according to claim 1, characterized in that: Dovetail blocks (17) are fixedly installed on both the front and rear sides of the connecting block A (16), and dovetail grooves (18) are opened on both the front and rear sides of the inner cavity of the connecting shell (2), and the dovetail blocks (17) are slidably connected in the inner cavity of the adjacent dovetail grooves (18).
4. A toothbrush with switchable bristle density according to claim 1, characterized in that: A connecting hole (13) is provided on the other side of the toothbrush handle (4). The inner cavity of the connecting hole (13) is provided with an internal thread, and a threaded post (14) is threadedly connected to the inner cavity of the connecting hole (13). A suction cup (15) is fixedly installed at the end of the threaded post (14).
5. A toothbrush with switchable bristle density according to claim 1, characterized in that: A placement slot (12) is provided on the front side of the toothbrush handle (4) near the other side. A micro battery (11) is fixedly installed at the bottom of the inner cavity of the placement slot (12) near one side. A timer (10) is fixedly installed at the bottom of the inner cavity of the placement slot (12) near the middle position. An alarm (9) is fixedly installed at the bottom of the inner cavity of the placement slot (12) near the other side. A display screen (5) is installed on the top of the toothbrush handle (4). Two control buttons (6) are fixedly installed on the top of the toothbrush handle (4) near the other side.
6. A toothbrush with switchable bristle density according to claim 5, characterized in that: The micro battery (11) is electrically connected to the timer (10) and the alarm (9) respectively. The timer (10) is electrically connected to the alarm (9) and the display screen (5).
7. A toothbrush with switchable bristle density according to claim 5, characterized in that: The toothbrush handle (4) is provided with a cover plate (7) on the front side. Bolts (8) are movably inserted through the front side of the cover plate (7) near the four sides. Several threaded blind holes are opened on the front side of the toothbrush handle (4) near the other side. The threaded blind holes are all located on the outer periphery of the placement groove (12). The ends of the bolts (8) are threaded into the inner cavities of adjacent threaded blind holes respectively.