Adjustable toothbrush
By combining the guide block with the built-in groove of the telescopic handle sleeve and using a magnetic structure, the problem of fixed handle length in traditional toothbrushes is solved, enabling flexible adjustment and stability of the handle length to meet the needs of different users and improve brushing comfort and portability.
Patent Information
- Application Number
- CN202423222608.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional toothbrush handles have a fixed length, which cannot accommodate different hand sizes, resulting in inconvenience in holding, poor brushing effect, and taking up a lot of space in certain situations.
The brush handle length can be adjusted by the cooperation of the guide block and the built-in groove on the inner wall of the telescopic handle sleeve. Stability is ensured by the stabilizing sleeve frame and magnetic structure. Combined with the design of the water guide groove and the external cover, the stability and waterproofness of the brush handle are improved.
It allows for flexible adjustment of the brush handle length to accommodate users with different hand sizes, improving brushing comfort and efficiency, reducing the space occupied while preventing the brush handle from slipping and water from accumulating.
Smart Images
Figure CN223640338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toiletries, and in particular to an adjustable toothbrush. Background Technology
[0002] In the field of toiletries technology, toothbrushes, as an important tool for daily oral hygiene, have been constantly evolving in design to meet the diverse needs of consumers.
[0003] However, traditional toothbrushes typically have a fixed handle length. Since hand sizes vary considerably among users, a longer handle can be inconvenient for those with smaller hands, such as children or some women, making it difficult to precisely control brushing pressure and angle, thus affecting brushing effectiveness and potentially causing the toothbrush to slip during brushing. Conversely, for users with larger hands, such as adult men, a shorter handle may not allow for full finger extension, leading to fatigue during prolonged use and hindering efficient oral cleaning. Furthermore, in special situations such as travel, a standard-length toothbrush may take up too much space when stored, making it inconvenient to carry.
[0004] In view of the above, a toothbrush with an adjustable handle length is proposed to meet the personalized needs of different users and the convenience of use in different scenarios, thereby improving the comfort and effectiveness of brushing teeth. Utility Model Content
[0005] This invention addresses the shortcomings of existing technologies by utilizing the cooperation between guide blocks on both sides of the brush handle and the built-in grooves on the inner wall of the telescopic handle sleeve to achieve easy adjustment of the brush handle length. Users can quickly adjust to the desired length simply by holding the brush handle and pulling it up and down; the operation is intuitive and convenient. A stabilizing frame is fitted onto the outside of the telescopic handle sleeve, and the friction between its inner wall and the outer wall of the telescopic handle sleeve provides a certain degree of stability during brush handle length adjustment, preventing accidental slippage of the brush handle.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solutions to meet the personalized needs of different users and the ease of use in different scenarios.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] An adjustable toothbrush includes a handle and a brush head. The brush head is mounted on the top of the handle. The handle has a telescopic sleeve on its exterior. The inner wall of the telescopic sleeve has built-in grooves on both sides. Guide blocks are connected to both sides of the handle. The guide blocks are inserted along the openings of the built-in grooves and allow the handle to move inside the telescopic sleeve. A stabilizing frame is connected between the guide blocks on both sides and is fitted over the telescopic sleeve.
[0009] Preferably, the rear wall of the stabilizing sleeve is rotatably connected to a stabilizing plate via a shaft, and the rear wall of the brush handle is provided with a magnetic attraction structure, which generates a magnetic attraction state with the stabilizing plate.
[0010] Preferably, the magnetic structure is connected to an outer limiting frame, and an outer cover is assembled inside the outer limiting frame in a nested manner.
[0011] Preferably, the outer cover is glued with a surrounding adhesive strip, and the surrounding adhesive strip fits tightly against the inner wall of the outer limiting frame.
[0012] Preferably, the bottom of the brush handle is connected to a protruding structure, and the front and rear ends of the bottom of the inner wall of the telescopic handle sleeve are both connected to positioning plates, with the protruding structure tightly inserted into the opening of the positioning plate.
[0013] Preferably, the height of the stabilizing plate is greater than that of the stabilizing frame, and the inner end face of the upper end of the stabilizing plate has a curvature.
[0014] Preferably, the bottom of the inner wall of the telescopic handle sleeve is provided with a plurality of water guide grooves for guiding water.
[0015] Preferably, the inner bottom sides of the telescopic handle sleeve have a symmetrical sloping shape.
[0016] Preferably, a hanging rope is glued to the bottom of the protruding structure, and the hanging rope can pass through the interior of the water guide channel.
[0017] Preferably, the upper and lower openings of the water guide channel are open.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] The adjustable toothbrush provided in this application allows for easy adjustment of the handle length through the cooperation of guide blocks on both sides of the handle and the built-in grooves on the inner wall of the telescopic handle sleeve. Users can quickly adjust to the desired length simply by holding the handle and pulling it up and down; the operation is intuitive and convenient. A stabilizing frame is fitted onto the outside of the telescopic handle sleeve, and the friction between its inner wall and the outer wall of the telescopic handle sleeve provides a certain degree of stability during handle length adjustment, preventing accidental slippage of the handle.
[0020] The stabilizing plate and the magnetic structure on the back wall of the brush handle in this application create a magnetic attraction, which further ensures that the toothbrush remains stable after being adjusted to the appropriate length, and prevents the brush handle from stretching or shortening during brushing.
[0021] This application addresses the issue of toothbrush handle length, which is unsuitable for users with smaller hands (such as children or some women). Longer handles make it difficult to grip properly, control brushing pressure and angle, and may even cause the toothbrush to slip due to insufficient grip strength. This adjustable toothbrush allows users to adjust the handle length to their hand size, resulting in a more comfortable and stable grip and more precise oral cleaning. For users with larger hands (such as adult men), shorter handles prevent fingers from fully extending, leading to fatigue during prolonged use. Adjustable handle length allows for a more comfortable and relaxed grip, reducing fatigue and improving brushing efficiency. In special situations such as travel, standard-length toothbrushes may take up too much space when stored. This adjustable toothbrush shortens the handle for easier carrying and saves luggage space.
[0022] The raised structure at the bottom of the brush handle and the positioning plate at the bottom of the inner wall of the telescopic handle sleeve fit tightly together when the brush handle is retracted, improving the stability of the toothbrush in the stored state and preventing the brush handle from accidentally slipping out. The surrounding rubber strip on the outer perimeter of the outer cover fits tightly against the inner wall of the outer limiting frame, which not only protects the magnetic structure but also prevents moisture or dust from entering, ensuring the stability of the magnetic attraction effect.
[0023] The evenly spaced water channels on the bottom of the inner wall of the telescopic handle sleeve, along with the symmetrical slopes on both sides of the bottom, effectively guide water flow. After use, any water droplets remaining inside the telescopic handle sleeve will be guided by gravity through the slopes to the water channels and drain smoothly, ensuring the toothbrush stays dry and preventing bacterial growth. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;
[0027] Figure 3 This is a structural diagram of the present invention in use;
[0028] Figure 4 This is a partial structural diagram of the brush handle and stabilizing sleeve of this utility model from a bottom view;
[0029] Figure 5This is a partial rear view of the structure at the disassembly point of the telescopic handle sleeve and the outer cover of this utility model;
[0030] Figure 6 This is a partial structural diagram of the telescopic handle sleeve of this utility model;
[0031] Figure 7 This is a partial rear view structural diagram of the brush handle, stabilizing plate, and stabilizing sleeve of this utility model;
[0032] Figure 8 This is a top view of a partial cross-sectional structure of the telescopic handle sleeve, magnetic structure, and external cover of this utility model;
[0033] Figure 9 This is a partial structural schematic diagram of the left side cross-section of this utility model.
[0034] Drawing number descriptions: 1. Brush handle; 101. Raised structure; 102. Hanging rope; 2. Brush head; 3. Telescopic handle sleeve; 301. Internal groove; 302. Positioning plate; 303. Water guide groove; 4. Stabilizing frame; 401. Guide block; 5. Stabilizing plate; 6. Magnetic structure; 601. External limiting frame; 7. External cover; 701. Surrounding rubber strip. Detailed Implementation
[0035] The present invention will now be described in further detail with reference to the accompanying drawings.
[0036] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0037] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.
[0038] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example
[0039] Please see Figure 1-9 An adjustable toothbrush includes a handle 1 and a brush head 2. The brush head 2 is installed on the top of the handle 1. A telescopic handle sleeve 3 is provided on the outside of the handle 1. The inner walls of the telescopic handle sleeve 3 are provided with built-in grooves 301 on both sides. Guide blocks 401 are connected to both sides of the handle 1. The guide blocks 401 are inserted into the opening of the built-in grooves 301 and allow the handle 1 to move inside the telescopic handle sleeve 3. A stabilizing frame 4 is connected between the two guide blocks 401 and is fitted on the outside of the telescopic handle sleeve 3.
[0040] The adjustable toothbrush of this application is mainly composed of a brush handle 1, a brush head 2, a telescopic handle sleeve 3, an internal groove 301, a stabilizing frame 4, and a guide block 401. The following is a detailed description of its structure and working principle.
[0041] I. Component Assembly
[0042] (a) Assembly of brush head 2 and brush handle 1
[0043] Install the brush head 2 on top of the handle 1, ensuring a secure installation, to form the basic main structure of the toothbrush.
[0044] Assembly of brush handle 1 and telescopic handle sleeve 3
[0045] Guide blocks 401 are fixedly connected to the bottom of both sides of the brush handle 1.
[0046] Place the telescopic handle sleeve 3 over the outside of the brush handle 1, align the guide block 401 with the built-in grooves 301 on both sides of the inner wall of the telescopic handle sleeve 3, and insert the guide block 401 along the opening of the built-in groove 301. In this way, the brush handle 1 can move up and down inside the telescopic handle sleeve 3.
[0047] Installation of telescopic handle sleeve 3
[0048] A stabilizing sleeve 4 is connected between the two guide blocks 401. When the guide block 401 is inserted into the built-in slot 301, the stabilizing sleeve 4 will be fitted onto the outside of the telescopic handle sleeve 3.
[0049] Installation of Stabilizer 5
[0050] The rear wall of the stabilizing frame 4 is rotatably connected to the stabilizing plate 5 via a shaft.
[0051] A magnetic attraction structure 6 is provided on the rear wall of the brush handle 1. When the stabilizing plate 5 is rotated to be parallel to the rear wall of the brush handle 1, the stabilizing plate 5 and the magnetic attraction structure 6 are magnetically attracted to each other.
[0052] Installation of outer limit frame 601 and outer cover 7
[0053] An outer limiting frame 601 is connected to the outer periphery of the magnetic structure 6.
[0054] The outer cover 7 is assembled into the outer limiting frame 601 through a nesting fit. A surrounding adhesive strip 701 is glued to the outer periphery of the outer cover 7. During assembly, the surrounding adhesive strip 701 fits tightly against the inner wall of the outer limiting frame 601, which serves to seal and stabilize the outer cover 7.
[0055] Setting of positioning plate 302
[0056] Positioning plates 302 are connected to the front and rear ends of the bottom of the inner wall of the telescopic handle sleeve 3. When the brush handle 1 is fully retracted, the protruding structure 101 connected to the bottom of the brush handle 1 will be tightly inserted into the opening of the positioning plate 302, improving the stability when retracted.
[0057] Setting of water guide channel 303
[0058] Several water guide grooves 303 are evenly opened at the bottom of the inner wall of the telescopic handle sleeve 3. The upper and lower ends of the water guide grooves 303 are open to facilitate the drainage of water and drying after use.
[0059] (II) Instructions for Use
[0060] Adjust the length of brush handle 1
[0061] When adjusting the length of the brush handle 1, the user should hold the brush handle 1 in the middle or upper-middle part for better force application. When pulling the brush handle 1 upwards, the guide block 401 will experience some resistance during its ascent due to the friction between the stabilizing sleeve 4 and the telescopic handle sleeve 3. However, this resistance should not be excessive to avoid affecting the ease of adjustment. The brush handle 1 should extend smoothly.
[0062] When the brush handle 1 is pushed down, the guide block 401 will descend along the built-in groove 301 until it reaches its minimum length. In the minimum length state, the protruding structure 101 at the bottom of the brush handle 1 is inserted into the positioning plate 302, and there will be a clear "click" feeling, indicating to the user that the brush handle 1 has reached its minimum length.
[0063] Operation of Stabilizer 5
[0064] After adjusting the length of the brush handle 1, rotate the stabilizing plate 5 to a position parallel to the rear wall of the brush handle 1. Due to the magnetic attraction between the stabilizing plate 5 and the magnetic structure 6, the stability of the toothbrush after adjustment can be further improved.
[0065] If the length of the brush handle 1 needs to be adjusted again, rotate the stabilizing plate 5 to the position where it coincides with the stabilizing sleeve 4, release the magnetic attraction, and then the brush handle 1 can be moved up and down easily.
[0066] The height of the stabilizing plate 5 is greater than that of the stabilizing sleeve 4. The inner end face of the upper end of the stabilizing plate 5 is curved to facilitate rotation during use and improve the convenience of wiping operations.
[0067] Storage and hanging
[0068] When the brush handle 1 is fully retracted, the protruding structure 101 at the bottom of the brush handle 1 will be inserted into the positioning plate 302, improving the stability when retracted. A hanging rope 102 is glued to the bottom of the protruding structure 101. In the retracted state, the hanging rope 102 can be passed through the water guide groove 303 to hang the entire toothbrush for easy storage.
[0069] II. Working Principle
[0070] (I) Length Adjustment Principle
[0071] The engagement of guide block 401 with built-in slot 301
[0072] The sliding of the guide block 401 within the built-in groove 301 is based on a simple mechanical principle. The built-in groove 301 provides a linear track for the guide block 401, restricting the brush handle 1 to move only up and down within the telescopic handle sleeve 3. This design is similar to the drawer slide structure, achieving relative movement of components by restricting the direction of movement. The length of the built-in groove 301 determines the adjustable length range of the brush handle 1.
[0073] The function of the stabilizing frame 4
[0074] The friction between the stabilizing sleeve 4 and the telescopic handle sleeve 3 is based on the surface roughness and normal force of the materials. When the inner wall of the stabilizing sleeve 4 and the outer wall of the telescopic handle sleeve 3 come into contact, there are tiny unevennesses due to the non-perfect smoothness of the surfaces. When the stabilizing sleeve 4 is fitted over the telescopic handle sleeve 3 and moves with the brush handle 1, these tiny unevennesses rub against each other, generating friction.
[0075] To ensure stability, the positive pressure between the stabilizing sleeve 4 and the telescopic handle sleeve 3 must be moderate. Excessive positive pressure will lead to excessive friction, making it difficult to adjust the brush handle 1; insufficient positive pressure will result in insufficient friction, causing the brush handle 1 to wobble during use. The positive pressure is generally controlled by designing the dimensional tolerances of the stabilizing sleeve 4 and the telescopic handle sleeve 3, for example, by controlling the difference between the inner diameter of the stabilizing sleeve 4 and the outer diameter of the telescopic handle sleeve 3 within a certain range.
[0076] (II) Principle of Enhanced Stability
[0077] The function of magnetic structure 6
[0078] The magnetic attraction between the magnetic structure 6 and the stabilizing plate 5 is based on the interaction of magnetic fields. When the stabilizing plate 5 approaches the magnetic structure 6, the magnetic fields between the two attract each other, allowing the stabilizing plate 5 to be firmly attached to the rear wall of the brush handle 1.
[0079] The stabilizing plate 5 is made of metal, and the strength of the magnetic attraction depends on the performance and size of the magnet in the magnetic structure 6. Generally, high-performance magnets such as neodymium iron boron magnets can achieve a large magnetic attraction strength in a small volume. The magnetic attraction strength needs to be strong enough to ensure that the stabilizing plate 5 will not easily detach from the magnetic structure 6 even when subjected to a certain external force during brushing, but it cannot be too strong, so that the stabilizing plate 5 will be difficult to separate from the magnetic state when the length of the brush handle 1 needs to be adjusted.
[0080] The function of positioning plate 302
[0081] The positioning plate 302 acts similarly to a slot structure in limiting the protrusion 101. When the protrusion 101 is inserted into the positioning plate 302, the positioning plate 302 restricts the protrusion 101 from the front-to-back direction, preventing the brush handle 1 from sliding axially in the retracted state. This design ensures the stability of the toothbrush when stored and prevents the brush handle 1 from accidentally extending during carrying.
[0082] (III) Waterproofing and Drying Principles
[0083] The function of water guide channel 303
[0084] The drainage principle of the water guide channel 303 is based on gravity and the fluidity of water. After using the toothbrush, water droplets remaining on the inner wall of the telescopic handle sleeve 3 will flow into the water guide channel 303 under the action of gravity. Since the upper and lower openings of the water guide channel 303 are open, the water droplets can be smoothly discharged along the water guide channel 303.
[0085] The shape and size design of the water guide channel 303 have a significant impact on the drainage effect. The arc-shaped water guide channel 303 can better guide the water flow, preventing it from accumulating in the channel during the flow process. At the same time, the width and depth of the water guide channel 303 should be large enough to ensure that the water flow can pass through quickly, but not too large, so as not to affect the structural strength of the telescopic handle sleeve 3.
[0086] The function of the inclined shape of the inner wall of the telescopic handle sleeve 3
[0087] The symmetrical sloping design on both sides of the bottom of the inner wall of the telescopic handle sleeve 3 concentrates and guides water flow to the water guide channel 303. When water droplets remain on the inner wall of the telescopic handle sleeve 3, they will flow to the bottom under the guidance of gravity and the slope, eventually flowing into the water guide channel 303 for discharge. This design improves drainage efficiency, reduces the time water remains in the telescopic handle sleeve 3, and helps keep the toothbrush dry and clean.
[0088] (iv) Sealing and Protection Principles
[0089] Functions of the outer cover 7 and the surrounding adhesive strip 701
[0090] The sealing principle of the surrounding rubber strip 701 is based on the elasticity and compression deformation of the rubber material. When the outer cover 7 is nested into the outer limiting frame 601, the surrounding rubber strip 701 is compressed and deformed by the pressure of the inner wall of the outer limiting frame 601. This compression deformation makes the surrounding rubber strip 701 fit tightly against the inner wall of the outer limiting frame 601, thereby forming a seal.
[0091] The choice of material for the surrounding rubber strip 701 is crucial. Generally, rubber materials with good elasticity and aging resistance, such as silicone rubber, are selected. Silicone rubber does not lose its elasticity due to aging during long-term use, ensuring a long-term sealing effect. Simultaneously, the installation of the surrounding rubber strip 701 should be even, avoiding areas that are too thick or too thin, which would affect the sealing effect. Through the nested fit and the sealing effect of the surrounding rubber strip 701, the outer cover 7 effectively protects the magnetic structure 6 from external factors such as moisture and dust, ensuring the stability of the magnetic attraction effect.
[0092] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.
Claims
1. An adjustable toothbrush, comprising a handle (1) and a brush head (2), characterized in that: The brush head (2) is installed on the top of the brush handle (1). The brush handle (1) is provided with a telescopic handle sleeve (3) on the outside. Both sides of the inner wall of the telescopic handle sleeve (3) are provided with built-in grooves (301). Both sides of the brush handle (1) are connected to guide blocks (401). The guide blocks (401) are inserted along the opening of the built-in grooves (301) and the brush handle (1) is located inside the telescopic handle sleeve (3) for movement. A stabilizing frame (4) is connected between the guide blocks (401) on both sides and the stabilizing frame (4) is fitted on the outside of the telescopic handle sleeve (3).
2. An adjustable toothbrush according to claim 1, characterized in that: The rear wall of the stabilizing sleeve (4) is rotatably connected to the stabilizing plate (5) via a shaft, and the rear wall of the brush handle (1) is provided with a magnetic attraction structure (6), which generates a magnetic attraction state with the stabilizing plate (5).
3. An adjustable toothbrush according to claim 2, characterized in that: The magnetic structure (6) is connected to an outer limiting frame (601) on its outer periphery, and an outer cover (7) is assembled inside the outer limiting frame (601) in a nested manner.
4. An adjustable toothbrush according to claim 3, characterized in that: The outer cover (7) has a surrounding adhesive strip (701) glued to its outer periphery, and the surrounding adhesive strip (701) fits tightly against the inner wall of the outer limiting frame (601).
5. An adjustable toothbrush according to claim 1, characterized in that: The bottom of the brush handle (1) is connected to a protruding structure (101), and the front and rear ends of the bottom of the inner wall of the telescopic handle sleeve (3) are connected to positioning plates (302). The protruding structure (101) is tightly inserted into the opening of the positioning plate (302).
6. An adjustable toothbrush according to claim 2, characterized in that: The height of the stabilizing plate (5) is greater than that of the stabilizing frame (4), and the inner end face of the upper end of the stabilizing plate (5) has an arc.
7. An adjustable toothbrush according to claim 1, characterized in that: The bottom of the inner wall of the telescopic handle sleeve (3) is evenly provided with several water guide grooves (303) for guiding water.
8. An adjustable toothbrush according to claim 1, characterized in that: The inner bottom of the telescopic handle sleeve (3) has a symmetrical slope shape on both sides.
9. An adjustable toothbrush according to claim 5, characterized in that: The bottom of the protruding structure (101) is glued with a hanging rope (102), which can pass through the interior of the water guide channel (303).
10. An adjustable toothbrush according to claim 7, characterized in that: The water guide channel (303) has open openings at both the top and bottom.