Electric toothbrush with replaceable brush head
By setting a connector and an inner block on the electric toothbrush body, and using a snap-fit and protrusion structure, the problem of complicated brush head replacement in existing electric toothbrushes is solved, enabling quick replacement and convenient disassembly of the brush head, reducing production costs and improving ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANWEI SHIHENG TECH CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-24
AI Technical Summary
The existing electric toothbrush head replacement mechanism is complex, resulting in high production costs and inconvenience in replacement.
An electric toothbrush with replaceable brush heads was designed. By setting a connector and an inner block on the toothbrush body, the brush head can be quickly assembled and disassembled using a snap-fit block and a protrusion structure, simplifying the replacement process.
It enables quick brush head replacement and versatile disassembly, reducing production costs and improving ease of use.
Smart Images

Figure CN224155815U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric toothbrushes, and more particularly to an electric toothbrush with replaceable brush heads. Background Technology
[0002] Electric toothbrushes use the rapid rotation of a motor to swing the brush head from side to side, or use the bristles on the brush head to swing and sweep, instantly breaking down toothpaste into fine foam to deeply clean between teeth; electric toothbrushes are wirelessly charged by placing them in a wireless charging base; at the same time, the vibration of the bristles can promote blood circulation in the mouth and have a massaging effect on the gum tissue.
[0003] In the process of realizing this application, the inventors discovered the following problems with the prior art: Currently, toothbrush heads need to be replaced after long-term use. That is, due to long-term use, the brush head will wear out or accumulate dirt, and needs to be replaced regularly. However, the current brush head replacement structure is complicated, which not only results in high production costs, but also makes the existing toothbrush head replacement structure inconvenient.
[0004] Therefore, those skilled in the art have provided an electric toothbrush with a replaceable brush head to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electric toothbrush with a replaceable brush head. This toothbrush can be quickly assembled with the connector at the top of the toothbrush body to enable rapid brush head replacement. Additionally, the inner connector can be detached from the brush head body, making disassembly more versatile and convenient to use.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] An electric toothbrush with replaceable brush heads includes a first brush head, a toothbrush body, a base, and a second brush head. A connector is fixedly provided at the midpoint of the upper surface of the toothbrush body. The second brush head includes a brush head body. An inner connecting block is embedded in the lower end of the inner wall of the brush head body. Two protrusions are fixedly provided on both sides of the inner wall of the inner connecting block. A snap-fit block is installed on the rear end face of the inner connecting block. A slot is opened at the lower end of the rear end face of the brush head body, and a through hole is provided at the midpoint of the upper surface of the brush head body.
[0008] Furthermore, the snap-fit block is embedded inside the slot to snap-fit the inner block and the brush head body.
[0009] Furthermore, among the four protrusions, two protrusions on the same side form grooves between each other, and protrusions are fixedly provided on both sides of the outer wall of the connector, with two protrusions respectively embedded in the two grooves.
[0010] Furthermore, the lower end of the toothbrush body is embedded inside the base.
[0011] Furthermore, the No. 1 and No. 2 brush heads are of two different brush head structures and both can be installed on the connector.
[0012] This utility model has the following beneficial effects:
[0013] This utility model proposes an electric toothbrush with replaceable brush heads. The electric toothbrush has a brush head body with an inner connecting block at the top. The inner connecting block can be quickly spliced and installed with the connector at the top of the toothbrush body to achieve the effect of quick brush head replacement. At the same time, the inner connecting block can be removed from the brush head body separately, thus making the disassembly method more diversified and the use more convenient and quick. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;
[0015] Figure 2 This is a top view structural diagram of the No. 2 brush head of this utility model;
[0016] Figure 3 For the present utility model Figure 1 Another structural diagram;
[0017] Figure 4 This is a rear view schematic diagram of the No. 2 brush head of this utility model;
[0018] Figure 5 This is a schematic diagram of the internal block of this utility model.
[0019] Legend:
[0020] 1. Brush head #1; 2. Toothbrush body; 3. Base; 4. Brush head #2; 401. Brush head body; 402. Protrusion; 403. Inner connecting block; 404. Through hole; 405. Slot; 406. Connecting block; 5. Connector. Detailed Implementation
[0021] 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.
[0022] Reference Figures 1-5This utility model provides an embodiment of an electric toothbrush with replaceable brush heads, including a first brush head 1, a toothbrush body 2, a base 3, and a second brush head 4. A connector 5 is fixedly provided at the midpoint of the upper end face of the toothbrush body 2. The second brush head 4 includes a brush head body 401. An inner connecting block 403 is embedded in the lower end of the inner wall of the brush head body 401. Two protrusions 402 are fixedly provided on both sides of the inner wall of the inner connecting block 403. A snap-fit block 406 is installed on the rear end face of the inner connecting block 403. A slot 405 is opened at the lower end of the rear end face of the brush head body 401, and a through hole 404 is provided through the midpoint of the upper end face of the brush head body 401. The snap-fit block 406 is embedded in the slot 405 to snap-fit the inner connecting block 403 and the brush head body 401.
[0023] Specifically, it adopts a separate structure of toothbrush body 2 and brush head, which allows for quick replacement of the brush head. Its structure is simple and convenient to use.
[0024] Reference Figure 3 Of the four protrusions 402, two protrusions 402 located on the same side form grooves between each other. Both sides of the outer wall of the connector 5 are fixedly provided with protrusions, and two protrusions are respectively embedded in two grooves.
[0025] Specifically, using a splicing method with specific and corresponding structural elements at specific locations can avoid errors during installation and also provide auxiliary guidance, ensuring ease of installation.
[0026] Reference Figure 1 The lower end of the toothbrush body 2 is embedded inside the base 3;
[0027] Specifically, the base 3 can be installed on a desktop, sink, or other location during use. Then, the toothbrush body 2 can be placed on the base 3 without the need for a cup. At the same time, the base 3 also serves as a wireless charging dock. The toothbrush body 2 can be embedded into the base 3 to achieve wireless inductive charging.
[0028] Reference Figure 1 and Figure 3 Brush head 1 and brush head 4 are of two different brush head structures and can both be installed on connector 5;
[0029] Specifically, when using it, you can choose to use either brush head 1 or brush head 4 as needed. Since brush head 1 and brush head 4 adopt two different types of structures, one is long and narrow and the other is round, they can be used interchangeably to meet different usage needs.
[0030] Working principle: When using this toothbrush, first select the required brush head and install it. When installing the brush head, use the inner connector 403 embedded at the lower end to snap it into the upper end of the connector 5 to quickly complete the assembly. When disassembling, simply pull it upwards.
[0031] Secondly, when it is difficult to quickly pull out the connector 5 after it is spliced with the inner connector 403, the separation effect can also be achieved by pressing the connector 406 in the slot 405 to move it inward, and then pulling out the brush head body 401.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. An electric toothbrush with replaceable brush heads, comprising a first brush head (1), a toothbrush body (2), a base (3), and a second brush head (4), characterized in that: A connector (5) is fixedly provided at the midpoint of the upper end face of the toothbrush body (2). The second brush head (4) includes a brush head body (401). An inner connecting block (403) is embedded in the lower end of the inner wall of the brush head body (401). Two protrusions (402) are fixedly provided on both sides of the inner wall of the inner connecting block (403). A snap-fit block (406) is installed on the rear end face of the inner connecting block (403). A slot (405) is opened at the lower end of the rear end face of the brush head body (401), and a through hole (404) is provided at the midpoint of the upper end face of the brush head body (401).
2. The electric toothbrush with replaceable brush heads according to claim 1, characterized in that: The snap-fit block (406) is embedded inside the slot (405) to snap-fit the inner block (403) and the brush head body (401).
3. The electric toothbrush with a replaceable brush head according to claim 1, characterized in that: Of the four protrusions (402), two protrusions (402) located on the same side form grooves between each other, and both sides of the outer wall of the connector (5) are fixedly provided with protrusions, and the two protrusions are respectively embedded in the two grooves.
4. The electric toothbrush with a replaceable brush head according to claim 1, characterized in that: The lower end of the toothbrush body (2) is embedded inside the base (3).
5. An electric toothbrush with a replaceable brush head according to claim 1, characterized in that: The No. 1 brush head (1) and the No. 2 brush head (4) are of two different brush head structures and can both be installed on the connector (5).