Electric toothbrush head with arch-bridge-shaped elastic piece tail plug

Abstract

The utility model provides an electric toothbrush head with an arch-bridge-shaped elastic piece tail plug, which relates to the field of electric toothbrushes and comprises a brush handle, a brush plate is arranged at the end of the brush handle, a brush piece is mounted and connected on the brush plate, a plurality of bristle planting holes are arranged on the brush piece, and bristles are mounted and connected in the bristle planting holes. A soft rubber sleeve is arranged outside the brush plate in a wrapping mode, and the brush handle is in a long-strip-shaped horn shape. The first elastic piece and the second elastic piece adopt the arch-bridge-shaped structural design, the mechanical principle of an arch bridge is ingeniously utilized, the elastic piece has excellent elastic deformation capacity, stable and lasting elastic force can be generated, the first boss and the second boss in the first elastic piece and the second elastic piece accurately apply pressing force to the axis of a main machine, and the pressing force is stable. The two elastic pieces can elastically deform and have the self-adaptive capacity, when the axis of the main machine deviates due to the precision problem of the production technology, the elastic force can be automatically compensated, and it is guaranteed that connection between the tail plug and the main machine transmission shaft is stable and reliable all the time.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrushes, and more particularly to an electric toothbrush head with an arch-shaped spring-loaded end cap. Background Technology

[0002] In today's oral care market, electric toothbrushes are favored by consumers for their efficient and convenient cleaning methods. However, existing electric toothbrush heads have gradually revealed many limitations in design and functionality, making it difficult to meet people's growing oral hygiene needs and higher pursuit of product quality.

[0003] From the perspective of the connection stability between the brush head and the handle, the tail plug design of traditional electric toothbrush heads is simple and crude, mostly using conventional fixing methods such as a single snap or simple nesting, lacking consideration for the connection precision between the main unit's drive shaft and the tail plug. In actual production, due to the difficulty in achieving absolute precision in the processing technology, the main unit's shaft often exhibits a certain degree of flatness deviation. This leads to an unstable connection between the tail plug and the drive shaft, resulting in uneven clamping force. On the one hand, this can easily cause the main unit's shaft to detach during high-speed operation, not only affecting the normal use of the electric toothbrush but also potentially damaging the motor. On the other hand, the unstable connection can also obstruct the transmission of vibration force, preventing the electric toothbrush from fully utilizing its cleaning efficiency and significantly reducing the user's brushing experience.

[0004] In terms of cleaning effectiveness, the bristle layout of ordinary electric toothbrush heads is often uniform, mostly perpendicular to the brush blade plane, limiting the coverage of the bristles on the tooth surface. The tooth surface is not completely smooth; it has many depressions, grooves, and interdental spaces that are difficult to clean. Conventional bristle arrangement cannot allow the bristles to effectively reach these areas, leading to plaque, food debris, and other dirt residue. Long-term accumulation can easily cause oral problems such as cavities and gingivitis.

[0005] Therefore, it is necessary to provide a new electric toothbrush head with an arch-shaped spring tail plug to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an electric toothbrush head with an arch-shaped spring-loaded end cap.

[0007] This utility model provides an electric toothbrush head with an arch-shaped spring-loaded tail plug, comprising: a brush handle, a brush plate at the end of the brush handle, a brush blade mounted on the brush plate, a plurality of bristle holes on the brush blade, bristles installed in each of the plurality of bristle holes, a soft rubber sleeve covering the outside of the brush plate, the brush handle being elongated and trumpet-shaped, a tail plug mounting position at the end of the brush handle, and a tail plug mounted in the tail plug mounting position; a spring-loaded fastening mechanism, comprising a first spring plate located on one side of the middle portion of the tail plug body, a second spring plate aligned with the lower end of the first spring plate, and a directional rib on the other side of the middle portion of the tail plug body.

[0008] Preferably, the outer surfaces of the first and second springs are provided with an arch-shaped structure, the first spring has a first protrusion inside, and the second spring has a second protrusion inside.

[0009] Preferably, the inner wall of the tail plug mounting position is provided with a recessed buckle, the side of the recessed buckle is provided with a directional groove, and the top of the tail plug mounting position is provided with a fixing post mounting position.

[0010] Preferably, a fixing post is provided at the front end of the tail plug, and a protruding buckle is provided at the bottom end of the tail plug.

[0011] Preferably, there are a total of 21 hair implantation holes. The first three hair implantation holes are tilted forward at 4 degrees, the last three hair implantation holes are tilted backward at 4 degrees, and the three hair implantation holes on the left and right sides in the middle are tilted to the sides at 3 degrees.

[0012] Preferably, the outer layer of the tips of the plurality of bristles is provided in an arc shape, and the inner layer of the tips of the plurality of bristles is provided with a protrusion that is high in the middle and low at both ends.

[0013] Compared with related technologies, the electric toothbrush head with an arch-shaped spring-loaded end cap provided by this utility model has the following beneficial effects:

[0014] 1. This utility model cleverly utilizes the mechanical principles of arch bridges by adopting an arch-shaped structure for the first and second spring pieces, giving them excellent elastic deformation capabilities and generating stable and lasting elastic force. The first and second protrusions inside the first and second spring pieces precisely apply clamping force to the main shaft. Because the two spring pieces can elastically deform and have self-adaptive capabilities, when the main shaft deviates due to manufacturing process precision issues, the elastic force can automatically compensate, ensuring that the connection between the tail plug and the main drive shaft remains stable and reliable. This self-adaptive connection effectively avoids insufficient clamping force caused by flatness deviation, making it difficult for the main shaft to detach. This not only ensures the safety of the electric toothbrush during use but also further improves the transmission efficiency of vibration force, resulting in a more outstanding brushing effect and providing users with a powerful and stable cleaning experience.

[0015] 2. This invention, through the unique inclined arrangement of multiple bristle implants, greatly increases the bristle projection area, widens the contact surface with the teeth, and significantly improves the cleaning coverage area. It can more comprehensively and deeply clean all parts of the teeth, effectively removing plaque, food debris, and other dirt, maintaining oral health. Furthermore, the tight fit between the fixing post at the front of the end cap and the fixing post on the handle, as well as the precise combination of the convex buckle at the bottom of the end cap and the concave buckle on the handle, ensures that the end cap will not rub against the handle under high-frequency vibration. This design effectively reduces noise during use, achieving a silent effect and creating a quiet and comfortable brushing environment for the user, enhancing the user experience, especially when used in the early morning or late at night, without disturbing others' rest. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the internal structure of the brush handle is shown.

[0018] Figure 3 for Figure 2 The diagram shows the structure at point A.

[0019] Figure 4 for Figure 2 The diagram shows the front structure of the tail plug;

[0020] Figure 5 for Figure 3 The diagram shows the rear structure of the tail plug.

[0021] The following are the labels in the diagram: 1. Brush handle; 11. Brush plate; 2. Brush blade; 3. Brush bristles; 4. Soft rubber sleeve; 5. Tail plug mounting position; 51. Tail plug; 52. First spring; 53. Second spring; 6. Directional rib; 61. Protruding buckle; 62. Fixing post; 7. Directional groove; 71. Recessed buckle; 72. Fixing post mounting position. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figures 1 to 5 An electric toothbrush head with an arch-shaped spring-loaded tail plug includes: a brush handle 1, a brush plate 11 at the end of the brush handle 1, a brush blade 2 mounted on the brush plate 11, a plurality of bristle holes on the brush blade 2, bristles 3 mounted in each of the plurality of bristle holes, a soft rubber sleeve 4 covering the outside of the brush plate 11, the brush handle 1 being elongated and trumpet-shaped, a tail plug mounting position 5 at the end of the brush handle 1, and a tail plug 51 mounted in the tail plug mounting position 5; a spring-loaded fastening mechanism, including a first spring 52, the first spring 52 being located on one side of the middle part of the body of the tail plug 51, a second spring 53 aligned at the lower end of the first spring 52, and a directional rib 6 on the other side of the middle part of the body of the tail plug 51.

[0024] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the outer surfaces of the first spring 52 and the second spring 53 are provided with an arch-shaped structure, the first spring 52 is provided with a first protrusion inside, and the second spring 53 is provided with a second protrusion inside.

[0025] It should be noted that: there is a directional rib 6 on one side of the middle part of the body of the tail plug 51, which together with the directional groove 7 on the brush handle 1 orients the tail plug 51 to prevent the tail plug 51 from being installed incorrectly.

[0026] On one side of the middle part of the tail plug 51, there are two spring pieces, namely the first spring piece 52 and the second spring piece 53. The outer surface of the two spring pieces is provided with an arch bridge-shaped structure. The arch bridge-shaped structure is used to make the spring pieces elastically deform and generate elastic force.

[0027] The first spring 52 and the second spring 53 are respectively provided with a first boss and a second boss. The first boss and the second boss apply a clamping force to the main shaft. Since the two bosses are respectively set on the two springs, the two springs are elastically deformable. The elastic force forms an adaptive capability. When the main shaft deviates due to the precision of the manufacturing process, the elastic force can adaptively compensate, making the connection between the tail plug 51 and the main drive shaft relatively stable. It will not cause insufficient clamping force due to flatness deviation, making it difficult for the main shaft to fall out, and further improving the vibration force.

[0028] refer to Figure 1 As shown, the inner wall of the tail plug mounting position 5 is provided with a recessed buckle 71, the side of the recessed buckle 71 is provided with a directional groove 7, and the top of the tail plug mounting position 5 is provided with a fixing post mounting position 72.

[0029] refer to Figure 1 and Figure 2 As shown, a fixing post 62 is provided at the front end of the tail plug 51, and a protruding buckle 61 is provided at the bottom end of the tail plug 51.

[0030] It should be noted that the fixing post 62 at the front end of the tail plug 51 works together with the fixing post mounting position 72 to fix the tail plug 51. The function of the fixing post 62 is to make the front end of the tail plug 51 tightly connected to the brush handle 1, so as to prevent high-frequency vibration from rubbing against the brush handle 1 during use and generating noise, thus playing a role in noise reduction.

[0031] The bottom of the tail plug 51 is provided with a protruding buckle 61 for fixing the tail plug 51, which is combined and assembled with the concave buckle 71 of the brush handle 1 to fix the tail plug 51 so that it will not come out of the brush handle 1, thus achieving the purpose of fixing the tail plug 51.

[0032] refer to Figure 1 As shown, there are a total of 21 hair implantation holes. The first three hair implantation holes are tilted forward at 4 degrees, the last three hair implantation holes are tilted backward at 4 degrees, and the three hair implantation holes on the left and right sides in the middle are tilted to the sides at 3 degrees.

[0033] It should be noted that the slanted bristle holes can increase the projected area of ​​the bristles, increase the contact surface, and improve the cleaning coverage area.

[0034] refer to Figure 1 and Figure 3 As shown, the outer layer of the top of the multiple bristles 3 is set in an arc shape, and the inner part of the top of the multiple bristles 3 is set with a protrusion that is high in the middle and low at both ends.

[0035] It should be noted that the outer layer of the tips of the multiple bristles 3 forms an arc shape with high ends and a low center, while the interior of the tips of the multiple bristles 3 has a protrusion with a high center and low ends. This further combines them into a shape resembling a gold ingot, which conforms closely to the teeth and enhances cleaning power.

[0036] The working principle of the electric toothbrush head with an arch-shaped spring-loaded tail plug provided by this utility model is as follows: The tail plug 51 is installed in the tail plug mounting position 5 of the brush handle 1. The directional rib 6 on one side of the middle part of its body cooperates with the directional groove 7 on the brush handle 1 to provide precise guidance for the tail plug 51 during installation, ensuring that the tail plug 51 can be inserted into the mounting position in the correct direction, effectively preventing installation errors and ensuring the accuracy of subsequent connections.

[0037] The first spring plate 52 and the second spring plate 53, located on one side of the middle of the tail plug 51 body, utilize their external arch-shaped structure to elastically deform and store elastic potential energy during the assembly process of the tail plug 51 when constrained by the internal space of the brush handle. Simultaneously, the first protrusion inside the first spring plate 52 and the second protrusion inside the second spring plate 53 align with the main shaft center. Once the tail plug 51 is in place, the spring plates, through their own elastic restoring force, apply a stable and balanced clamping force to the main shaft center. Even if the main shaft center experiences a flatness deviation due to insufficient manufacturing precision, the two spring plates, with their flexible elastic deformation, can adaptively adjust the direction and magnitude of the clamping force, always maintaining a tight connection between the tail plug 51 and the main drive shaft. This prevents the main shaft from dislodging and ensures efficient transmission of vibration force from the main unit to the brush head, guaranteeing stable high-frequency vibration of the brush head for efficient cleaning.

[0038] The retaining post 62 at the front end of the tail plug 51 is tightly embedded in the retaining post mounting position 72 of the brush handle 1. When the electric toothbrush is running, the relative displacement between the front end of the tail plug 51 and the brush handle 1 under high-frequency vibration is strictly limited, effectively preventing friction between the two due to vibration. This tight fixing method greatly reduces noise caused by friction, creating a quiet brushing environment for the user.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electric toothbrush head with an arch-shaped spring-loaded end cap, characterized in that, include: A brush handle (1) is provided at the end of the brush handle (1). A brush plate (11) is installed on the brush plate (11). A brush blade (2) is provided on the brush blade (2). A plurality of bristle holes are provided on the brush blade (2). Bristle bristles (3) are installed in each of the plurality of bristle holes. A soft rubber sleeve (4) is provided on the outside of the brush plate (11). The brush handle (1) is in the shape of a long horn. A tail plug mounting position (5) is provided at the end of the brush handle (1). A tail plug (51) is installed in the tail plug mounting position (5). The spring fastening mechanism includes a first spring (52), which is located on one side of the middle part of the body of the tail plug (51). A second spring (53) is provided at the lower end of the first spring (52), and a directional rib (6) is provided on the other side of the middle part of the body of the tail plug (51).

2. The electric toothbrush head with an arch-shaped spring-loaded end cap according to claim 1, characterized in that, The outer surfaces of the first spring (52) and the second spring (53) are provided with an arch bridge-shaped structure. The first spring (52) has a first protrusion inside, and the second spring (53) has a second protrusion inside.

3. The electric toothbrush head with an arch-shaped spring-loaded end cap according to claim 1, characterized in that, The inner wall of the tail plug mounting position (5) is provided with a recessed buckle (71), the side of the recessed buckle (71) is provided with a directional groove (7), and the top of the tail plug mounting position (5) is provided with a fixing post mounting position (72).

4. The electric toothbrush head with an arch-shaped spring-loaded end cap according to claim 1, characterized in that, The tail plug (51) has a fixing post (62) at the front end and a protruding buckle (61) at the bottom end.

5. An electric toothbrush head with an arch-shaped spring-loaded end cap as described in claim 1, characterized in that, There are a total of 21 hair implantation holes. The first three hair implantation holes are tilted forward at 4 degrees, the last three hair implantation holes are tilted backward at 4 degrees, and the three hair implantation holes on the left and right sides in the middle are tilted to the sides at 3 degrees.

6. An electric toothbrush head with an arched spring-loaded tail plug according to claim 1, characterized in that, The outer layer of the top of the multiple bristles (3) is set in an arc shape, and the inner part of the top of the multiple bristles (3) is set with a protrusion that is high in the middle and low at both ends.

Images