W-shaped toothbrush for deeply cleaning orthodontic bracket

By designing a W-shaped toothbrush that deeply cleans orthodontic brackets and employing an installation mechanism to allow for the individual replacement of the brush head, the problem of the non-reusable handle of existing toothbrushes is solved, thus extending the lifespan of the toothbrush.

CN224140377UActive Publication Date: 2026-04-21KOURO (SHANGHAI) BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KOURO (SHANGHAI) BIOTECHNOLOGY CO LTD
Filing Date
2025-05-30
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing toothbrushes require complete replacement after the bristles wear down, rendering the handle unusable.

Method used

Design a W-shaped toothbrush for deep cleaning of orthodontic brackets. The brush head can be replaced individually through an installation mechanism, including a positioning rod, a limiting plate, a locking block, a connecting device, and a sealing device, so that the handle can be reused.

Benefits of technology

It allows for the individual replacement of the brush head and the reuse of the handle, reducing replacement costs and extending the lifespan of the toothbrush.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224140377U_ABST
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Abstract

The utility model relates to the technical field of washing tools, in particular to a W-shaped toothbrush for deeply cleaning an orthodontic bracket. Comprising a toothbrush body and a mounting mechanism, the toothbrush body is composed of a handle part and a connecting part, a brushing part is arranged on the connecting part and composed of an outer bristle area and an inner bristle area, and the mounting mechanism comprises a positioning rod, a limiting plate, a locking block, a connecting device and a sealing device. After the sealing device is taken down, the connecting device is taken down, the locking block is further taken down, finally, the limiting plate is taken down, so that the positioning rod is separated from the connecting part, then the connecting part is pulled out, the brushing part and the handle part can be separated, a newly-purchased brushing part and connecting part integral structure can be directly installed subsequently, and the handle part does not need to be replaced when not damaged. And therefore, the brushing part can be independently replaced in the use process, and the handle part can be recycled.
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Description

Technical Field

[0001] This utility model relates to the field of toiletries technology, and in particular to a W-shaped toothbrush for deep cleaning orthodontic brackets. Background Technology

[0002] A toothbrush is a daily oral care tool used to clean teeth, mainly consisting of a handle and a brush head. During brushing, the bristles on the brush head work in conjunction with toothpaste to clean the surface of the teeth.

[0003] A search revealed that prior art CN218978273U discloses a novel orthodontic toothbrush. Its soft-bristled brush area is located above the brush head and includes interdental brushes, enamel brushes, and bracket brushes. The interdental brushes are distributed in three sections: front, middle, and back. An enamel brush is placed between every two adjacent interdental brush sections, and a bracket brush is placed in the center of each enamel brush section, thus forming a position where the bracket brush surrounds the enamel brush. The bristles of the interdental brushes are longer than those of the enamel brushes, and the bristles of the enamel brushes are longer than those of the bracket brushes. A W-shaped brush is added to the center of the tongue cleaning area. This invention facilitates cleaning of the enamel and bracket gaps without requiring replacement of the orthodontic interdental brush, offering multiple uses and overcoming the problem of existing orthodontic toothbrushes not being able to clean more precisely and specifically. Simultaneously, the design of the tongue cleaning area also facilitates further cleaning of the tongue area.

[0004] However, the toothbrushes mentioned above have the following problems when in use: most toothbrushes need to be replaced when the bristles wear down, but the toothbrushes with the existing structure mentioned above need to be replaced as a whole, which means that the reusable handle part cannot be used again. Utility Model Content

[0005] The purpose of this invention is to provide a W-shaped toothbrush for deep cleaning of orthodontic brackets, which allows for the individual replacement of the brushing part during use, so that the handle can be reused.

[0006] To achieve the above objectives, this utility model provides a W-shaped toothbrush for deep cleaning orthodontic brackets, including a toothbrush body, which is composed of a handle and a connecting part. The connecting part is detachably installed on the front side of the handle and is provided with a brushing part.

[0007] The brushing part consists of an outer bristle area and an inner bristle area, and the height of the inner bristle area is the same as the height of the outer bristle area.

[0008] It also includes the installation mechanism;

[0009] The installation mechanism includes a positioning rod, a limiting plate, a locking block, a connecting device, and a sealing device. The positioning rod is slidably connected to the connecting part and passes through the connecting part, but its bottom does not pass through the handle part. The limiting plate is integrally formed with the positioning rod and is slidably connected to the handle part. The locking block is detachably connected to both the handle part and the limiting plate, and is located on the top of the limiting plate and is L-shaped. The connecting device is located on the side of the locking block near the handle part. The sealing device is located on both the handle part and the connecting part.

[0010] The connecting device includes a connecting rod and a hexagonal nut. The connecting rod is slidably connected to the locking block and the handle portion respectively, and is located on the side of the handle portion near the limiting plate. The hexagonal nut is slidably connected to the handle portion and threadedly connected to the connecting rod.

[0011] The sealing device includes a sealing plate and a mating assembly. The sealing plate is detachably connected to the handle and is located outside the locking block. The sealing plate is provided with a head clearance cavity for the connecting rod. The mating assembly is respectively provided on the handle and the connecting part.

[0012] The mating assembly includes a first sealing ring and a second sealing ring. A plurality of first sealing rings are sleeved on the connecting part and slidably connected to the handle part. The second sealing ring is disposed on the handle part and slidably connected to the connecting rod.

[0013] The height of the inner bristle area on the brushing part can be set to be lower than the height of the outer bristle area.

[0014] This utility model discloses a W-shaped toothbrush for deep cleaning orthodontic brackets. When the bristles on the brushing part are worn, the user can purchase a spare part, remove the sealing device, then remove the connecting device, further remove the locking block, and finally remove the limiting plate to disengage the positioning rod from the connecting part. After pulling out the connecting part, the brushing part and handle can be separated. Subsequently, a newly purchased brushing part and connecting part can be directly installed. The handle does not need to be replaced if it is not damaged. Thus, the brushing part can be replaced separately during use, allowing the handle to be reused. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of the W-shaped toothbrush for deep cleaning orthodontic brackets according to the first embodiment of this utility model.

[0017] Figure 2 This is the first embodiment of the present utility model. Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 This is a schematic diagram showing the setting position of the locking block in the first embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the limiting plate according to the first embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the overall structure of the W-shaped toothbrush for deep cleaning orthodontic brackets according to the second embodiment of this utility model.

[0021] Figure 6 This is the second embodiment of the present utility model. Figure 5 Enlarged view of point B in the middle.

[0022] In the diagram: 100-toothbrush body, 101-handle, 102-connecting part, 103-brushing part, 1031-outer bristle area, 1032-inner bristle area, 104-positioning rod, 105-limiting plate, 106-locking block, 107-connecting rod, 108-hexagonal nut, 109-sealing plate, 110-first sealing ring, 111-second sealing ring. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] Example 1:

[0025] like Figures 1 to 4 As shown, where Figure 1 This is a schematic diagram of the overall structure of a W-shaped toothbrush for deep cleaning orthodontic brackets. Figure 2 yes Figure 1 Enlarged view of point A in the middle. Figure 3 This is a schematic diagram showing the location of the locking block 106. Figure 4This is a schematic diagram of the limiting plate 105. This utility model provides a W-shaped toothbrush for deep cleaning orthodontic brackets: it includes a toothbrush body 100 and an installation mechanism. The toothbrush body 100 consists of a handle portion 101 and a connecting portion 102. The connecting portion 102 is provided with a brushing part 103, which consists of an outer bristle area 1031 and an inner bristle area 1032. The installation mechanism includes a positioning rod 104, a limiting plate 105, a locking block 106, a connecting device, and a sealing device. The connecting device includes a connecting rod 107 and a hexagonal nut 108. The sealing device includes a sealing plate 109 and a mating assembly. The mating assembly includes a first sealing ring 110 and a second sealing ring 111. Through the aforementioned solution, the brushing part 103 can be replaced individually during use, thus allowing the handle portion 101 to be reused. It can be understood that the aforementioned solution enables the toothbrush handle portion 101 to be reused.

[0026] In this embodiment, the toothbrush body 100 is held by the handle portion 101.

[0027] The toothbrush body 100 is composed of a handle part 101 and a connecting part 102. The connecting part 102 is detachably installed on the front side of the handle part 101 and is provided with a brushing part 103. The brushing part 103 can work with toothpaste to clean teeth.

[0028] The brushing part 103 consists of an outer bristle area 1031 and an inner bristle area 1032, the height of which is the same as the height of the outer bristle area 1031. The outer bristle area 1031 and the inner bristle area 1032 cooperate to form a W-shaped brushing structure. The fact that the height of the inner bristle area 1032 is the same as the height of the outer bristle area 1031 makes this structure convenient for people who do not wear braces.

[0029] The positioning rod 104 is slidably connected to the connecting part 102 and passes through the connecting part 102, but its bottom does not pass through the handle part 101. The limiting plate 105 is integrally formed with the positioning rod 104 and is slidably connected to the handle part 101. The locking block 106 is detachably connected to the handle part 101 and the limiting plate 105 respectively, and is located on the top of the limiting plate 105 and is L-shaped. The connecting device is disposed on the side of the locking block 106 near the handle part 101. The sealing device is disposed on the handle part 101 and the connecting part 102 respectively. Symmetrical through holes are provided on the connecting part 102, and mating holes are provided at the bottom of the handle part 101. The mating holes are not through holes. The positioning rod 104 is integrally provided with the limiting plate 105 at the top. The limiting plate 105 is slidably installed in the stepped groove at the top of the mounting cavity of the handle part 101. The limiting plate 105 is provided with a sliding slot that mates with the locking block 106. The handle part 101 is provided with a rectangular slot for the end of the locking block 106 to slide into. The length of the mounting cavity on the handle part 101 is sufficient to ensure the installation and removal of the locking block 106. The connecting device is used to limit the locking block 106, and the sealing device is used for waterproof sealing after installation.

[0030] Secondly, the connecting rod 107 is slidably connected to the locking block 106 and the handle portion 101 respectively, and is located on the side of the handle portion 101 near the limiting plate 105; the hexagonal nut 108 is slidably connected to the handle portion 101 and threadedly connected to the connecting rod 107. The connecting rod 107 is T-shaped and can be rotated using an Allen wrench. The handle portion 101 has a stepped hexagonal cavity for sliding installation of the hexagonal nut 108 and preventing rotation.

[0031] Then, the sealing plate 109 is detached from the handle portion 101 and located outside the locking block 106, and the sealing plate 109 is provided with a head clearance cavity for the connecting rod 107; the mating components are respectively provided on the handle portion 101 and the connecting portion 102. The sealing plate 109 is fixed by four countersunk bolts, and when installed, sealant is applied between its bottom and the bottom end face of the stepped groove of the handle portion 101, and sealant is applied at the contact points of its four sides with the handle portion 101 for sealing. The mating components are used for waterproof mating.

[0032] Finally, a plurality of first sealing rings 110 are sleeved and installed on the connecting part 102 and slidably connected to the handle part 101; the second sealing ring 111 is disposed on the handle part 101 and slidably connected to the connecting rod 107. Both the first sealing ring 110 and the second sealing ring 111 are O-rings made of wear-resistant rubber to reduce the entry of external water through the installation gap between the connecting part 102 and the handle part 101 or the mating gap between the handle part 101 and the connecting rod 107.

[0033] When using this invention, the brush actuation part 103 can be replaced individually, allowing the handle part 101 to be reused. During use, the toothbrush is held by gripping the handle part 101, and brushing is achieved by using toothpaste in conjunction with the outer bristle area 1031 and the inner bristle area 1032. When the bristle area on the brush actuation part 103 becomes worn, the user can purchase spare parts, remove the sealing plate 109, remove the connecting device, and further remove the locking block 106. Finally, remove the limiting plate 105 and completely detach the positioning rod 104 from the connecting part 102. Then, pull out the connecting part 102 to separate the brushing part 103 from the handle part 101. Subsequently, the newly purchased brushing part 103 and the connecting part 102 can be directly installed as a whole structure. The handle part 101 does not need to be replaced if it is not damaged. Thus, the brushing part 103 can be replaced separately during use, so that the handle part 101 can be reused.

[0034] Example 2:

[0035] like Figure 5 and Figure 6 As shown, where Figure 5 This is a schematic diagram of the overall structure of a W-shaped toothbrush for deep cleaning orthodontic brackets. Figure 6 yes Figure 5 The enlarged view at point B shows that, based on the first embodiment, this utility model provides a W-shaped toothbrush for deep cleaning of orthodontic brackets. The height of the inner bristle area 1032 on the brushing part 103 can be set to be lower than the height of the outer bristle area 1031.

[0036] In this embodiment, the height of the inner bristle area 1032 is set to be lower than that of the outer bristle area 1031, which facilitates use by people wearing braces. Meanwhile, traditional orthodontic toothbrushes have bristles arranged in parallel rows along the handle direction. The bristle arrangement of this invention divides the bristles into multiple individual units along the handle direction, each unit forming an acute angle and an obtuse angle with the handle in sequence. These acute and obtuse angles are arranged sequentially. A W-shaped wave arrangement is formed along the direction parallel to the handle. With the brush head and handle as the center line, a mirror-symmetrical W-shaped bristle arrangement is formed on both sides of the center line. The midline row of bristles is lower than the mirror-symmetrical bristles. When users brush their teeth during orthodontic treatment, holding the handle and brushing back and forth along a direction parallel to the handle, the peaks of the mirror-symmetrical upper and lower W-shaped bristles move through the gaps near the gingival papillae of the upper and lower teeth, while the troughs of the W-shaped bristles slide through the archwire gaps between every two orthodontic brackets, creating a sawtooth-like motion and a gliding cleaning effect. During this process, the tips, waists, and roots of the bristles participate in the cleaning process as a whole, and the release of the elastic potential energy of the entire bristle is significantly greater than the rebound cleaning force generated by the tips of traditional bristles alone. This greatly enhances the cleaning power of traditional toothbrushes.

[0037] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A W-shaped toothbrush for deep cleaning orthodontic brackets, comprising a toothbrush body, characterized in that: The toothbrush body consists of a handle and a connecting part. The connecting part is detachably installed on the front side of the handle and is provided with a brushing part. The brushing part consists of an outer bristle area and an inner bristle area, and the height of the inner bristle area is the same as the height of the outer bristle area. It also includes the installation mechanism; The installation mechanism includes a positioning rod, a limiting plate, a locking block, a connecting device, and a sealing device. The positioning rod is slidably connected to the connecting part and passes through the connecting part, but its bottom does not pass through the handle part. The limiting plate is integrally formed with the positioning rod and is slidably connected to the handle part. The locking block is detachably connected to both the handle part and the limiting plate, and is located on the top of the limiting plate and is L-shaped. The connecting device is located on the side of the locking block near the handle part. The sealing device is located on both the handle part and the connecting part.

2. The W-shaped toothbrush for deep cleaning orthodontic brackets as described in claim 1, characterized in that: The connecting device includes a connecting rod and a hexagonal nut. The connecting rod is slidably connected to the locking block and the handle portion respectively, and is located on the side of the handle portion near the limiting plate. The hexagonal nut is slidably connected to the handle portion and threadedly connected to the connecting rod.

3. The W-shaped toothbrush for deep cleaning orthodontic brackets as described in claim 2, characterized in that: The sealing device includes a sealing plate and a mating assembly. The sealing plate is detachably connected to the handle portion and is located outside the locking block. The sealing plate is provided with a head clearance cavity for the connecting rod. The mating assembly is respectively provided on the handle portion and the connecting portion.

4. The W-shaped toothbrush for deep cleaning orthodontic brackets as described in claim 3, characterized in that: The mating assembly includes a first sealing ring and a second sealing ring. A plurality of first sealing rings are sleeved on the connecting part and slidably connected to the handle part; the second sealing ring is disposed on the handle part and slidably connected to the connecting rod.

5. The W-shaped toothbrush for deep cleaning orthodontic brackets of claim 1, wherein : The height of the inner bristle area on the brushing part can also be set to be lower than the height of the outer bristle area.

Citation Information

Patent Citations

  • Novel orthodontic toothbrush

    CN218978273U