Elastic brush head of electric toothbrush and electric toothbrush

Abstract

The elastic brush head of the electric toothbrush comprises a brush head body and bristles, the brush head body is provided with an inner elastic body and an outer wrapping rubber layer arranged outside the inner elastic body, the outer wrapping rubber layer is a soft rubber layer, the inner elastic body is provided with a brush head portion and a supporting portion which are integrally connected, the brush head portion is provided with a bristle face, and the supporting portion is provided with a supporting portion. The outer rubber coating layer coats the outer surfaces of the brush head part and the supporting part, and only the bristle surface is exposed to form a hollow area for avoiding the bristle surface, the inner elastic body is used as a main supporting structure of the brush head body, so that the brush head has good resilience and bending resistance, and besides the bristle surface, the outer rubber coating layer completely coats the other surfaces of the inner elastic body, so that the service life of the brush head is prolonged. The flexible protection area can be increased, durability and aging resistance are guaranteed, the overall attractiveness is enhanced, the elastic and soft hand feeling is achieved, the overall experience feeling is further improved, the processing pattern of the outer wrapping rubber layer is simple, the production process can be simplified, the production difficulty is reduced, and the yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cleaning, in particular to an elastic brush head of an electric toothbrush and an electric toothbrush. Background Art

[0002] As people's living standards improve, oral hygiene has also received more attention. Among them, electric toothbrushes, as an effective oral cleaning tool, have the advantages of high cleaning efficiency and convenience, and are therefore loved by more and more people.

[0003] Currently, the support structure of most brush heads on the market is made of hard plastic, which causes such brush heads to lack sufficient elasticity and easily break if bent too much.

[0004] In addition, some brush heads have soft rubber coating on their outer surfaces, but it only covers part of the surface of the brush head, causing part of the internal supporting structure to be exposed and unable to play a protective role. After a period of use, it is prone to aging or impact damage, leading to breakage. In addition, since the shape and distribution of the rubber coating area of ​​the soft rubber coating are different, the rubber coating process is complicated and the yield is low. Utility Model Content

[0005] To this end, in order to solve the above-mentioned problems, the utility model provides an elastic brush head of an electric toothbrush and an electric toothbrush, which have good resilience and bending resistance, and in addition to the bristle surface, the outer rubber layer completely wraps the other surfaces of the inner elastomer to increase the flexible protection area, while simplifying the production process, reducing the difficulty of production, and improving the yield.

[0006] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0007] The utility model provides an elastic brush head of an electric toothbrush, comprising a brush head body and bristles mounted on the brush head body, the brush head body comprising an inner elastomer and an outer rubber layer arranged on the outer layer of the inner elastomer, the outer rubber layer being a soft rubber layer, the inner elastomer comprising an integrally connected brush head and a support portion, the brush head comprising a bristle surface for fixing the bristles, the bristles being arranged on the bristle surface; the outer rubber layer wraps the outer surfaces of the brush head and the support portion, with only the bristle surface exposed, so as to form a hollow area for giving way to the bristle surface.

[0008] Furthermore, the inner elastic body is an elastic hard colloid.

[0009] Furthermore, the inner elastic body is integrally injection molded.

[0010] Furthermore, the outer rubber layer and the inner elastic body are simultaneously molded by injection molding at one time; or the inner elastic body and the outer rubber layer are sequentially molded by injection molding.

[0011] Furthermore, an inner bracket for connecting to the electric toothbrush body is provided in the inner elastic body.

[0012] Furthermore, the brush head is an arc-shaped flat body.

[0013] Furthermore, the support portion is a column that is thin at the top and thick at the bottom.

[0014] Furthermore, the bristles are embedded on the bristle surface of the brush head by injection molding.

[0015] The utility model also provides an electric toothbrush, comprising an electric toothbrush body and the above-mentioned elastic brush head of the electric toothbrush, wherein the elastic brush head of the electric toothbrush is detachably assembled on the electric toothbrush body.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] By using the inner elastomer as the main supporting structure of the brush head body, it can achieve good resilience and bending resistance, thereby preventing the brush head body from bending too much and breaking. In addition, the outer rubber layer completely wraps the other surfaces of the inner elastomer except the bristle surface of the brush head of the inner elastomer, which can increase the flexible protection area, and at the same time play a flexible protection and isolation protection role to avoid the presence of hard objects, and also ensure the durability and aging resistance of the brush head body, enhance the overall appearance, and have a soft feel, thereby improving the overall experience; in addition, the processing pattern of the outer rubber layer is simple, which can also simplify the production process, reduce the difficulty of production, and improve the yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a cross-sectional view of the elastic brush head of the electric toothbrush in the first embodiment;

[0019] Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle;

[0020] Figure 3 Shown is a schematic diagram of the inner elastic body in Example 1;

[0021] Figure 4 Shown is a schematic diagram of the outer rubber layer in Example 1;

[0022] Figure 5 The figure shows the appearance of the elastic brush head of the electric toothbrush in the first embodiment from a first perspective;

[0023] Figure 6 The figure shows the appearance of the elastic brush head of the electric toothbrush in the first embodiment from a second viewing angle. DETAILED DESCRIPTION

[0024] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0026] Embodiment 1

[0027] Reference Figures 1 to 6 As shown, the first embodiment provides an elastic brush head of an electric toothbrush (hereinafter referred to as the elastic brush head), the elastic brush head includes a brush head body 1 and bristles 2 mounted on the brush head body 1, the brush head body 1 has Figure 3 The inner elastic body 11 shown in the figure and the outer layer of the inner elastic body 11 as shown in the figure Figure 4 The outer rubber layer 12 shown is a soft rubber layer, and the inner elastomer 11 has a brush head 111 and a support part 112 that are integrally connected. The brush head 111 has a bristle surface for fixing the bristles 2, and the bristles 2 are fixed on the bristle surface by a bristle planting process. The outer rubber layer 12 wraps the outer surface of the brush head 111 and the support part 112, and only the bristle surface is exposed to form a hollow area 121 to make way for the bristle surface.

[0028] In this embodiment, the outer rubber layer 12 and the inner elastomer 11 are simultaneously formed by injection molding, and the inner elastomer 11 is an elastic hard colloid, which is composed of ABS resin. The main components of ABS resin are a ternary copolymer of three monomers: acrylonitrile, butadiene, and styrene.

[0029] After the outer rubber layer 12, the brush head 111 and the support part 112 are simultaneously injection molded in the injection mold, the bristles 2 are then installed on the bristle surface of the brush head 111 through a hair planting process to complete the processing of the elastic brush head. This can avoid a large deviation in the alignment between the outer rubber layer 12 and the inner elastomer 11, and at the same time simplify the complexity of the alignment process between the outer rubber layer 12 and the inner elastomer 11.

[0030] The outer surface of the brush head 111 and the support part 112 is wrapped with the outer rubber layer 12 by an injection molding process, and only the bristle surface is exposed to ensure that the bristles 2 extend out of the outer rubber layer 12 .

[0031] By using the inner elastomer 11 as the main supporting structure of the brush head body 1, it can achieve good resilience and bending resistance, thereby preventing the brush head body 1 from bending too much and breaking. In addition, except for the bristle surface of the brush head 111 of the inner elastomer 11, the outer rubber layer 12 completely wraps the other surfaces of the inner elastomer 11, which can increase the flexible protection area, and at the same time play a flexible protection and isolation protection role to avoid the presence of hard objects, and also ensure the durability and anti-aging of the brush head body 1, enhance the overall aesthetics, and have a soft feel, thereby improving the overall experience.

[0032] In addition, the processing pattern of the outer plastic layer 12 is simple, which can also simplify the production process, reduce the production difficulty, and improve the yield rate.

[0033] Of course, in other embodiments, the bristles 2 can also be embedded on the bristle surface by injection molding.

[0034] In addition, the inner elastic body 11 and the outer rubber layer 12 are both integrally injection molded, and the inner elastic body 11 and the outer rubber layer 12 are sequentially molded by the injection molding process, that is, secondary injection molding.

[0035] In another preferred embodiment, Figure 3 As shown, the brush head 111 is an arc-shaped flat body, which can avoid sharp corners and will not cause damage to the user's oral cavity when brushing teeth. At the same time, it occupies a small volume to facilitate different brushing movements in a narrow mouth.

[0036] In another preferred embodiment, Figure 3 As shown, the support portion 112 is a column that is thin at the top and thick at the bottom. The diameter of one end of the support portion 112 close to the brush head 111 is smaller than the diameter of the other end of the support portion 112 away from the brush head 111. In this way, the structure is symmetrical and the appearance is more beautiful.

[0037] In another preferred embodiment, Figure 1 As shown, an inner bracket 3 for connecting the electric toothbrush body is arranged in the inner elastic body 11.

[0038] In this specific embodiment, Figure 3 The inner elastic body 11 shown in the figure has a mounting slot 114 for accommodating the inner bracket 3. The inner bracket 3 is inserted into the mounting slot 114, and when it is needed to brush teeth, it is convenient to put the inner bracket 3 into the mounting slot 114. Figure 4 or Figure 5 The elastic brush head shown is detachably connected to the driving shaft of the electric toothbrush body via the inner bracket 3, and has a simple structure and convenient connection operation.

[0039] Embodiment 2

[0040] Embodiment 2 provides an electric toothbrush, comprising an electric toothbrush body and the elastic brush head of the electric toothbrush of embodiment 1, wherein the elastic brush head of the electric toothbrush is detachably mounted on the electric toothbrush body.

[0041] When it is necessary to brush teeth, the inner bracket of the elastic brush head of the electric toothbrush is detachably mounted on the driving shaft of the electric toothbrush body to realize the disassembly and assembly of the elastic brush head of the electric toothbrush.

[0042] By using the inner elastomer as the main supporting structure of the brush head body, it can achieve good resilience and bending resistance, thereby preventing the brush head body from bending too much and breaking. In addition, in addition to the bristle surface of the brush head of the inner elastomer, the outer rubber layer completely wraps the other surfaces of the inner elastomer, which can increase the flexible protection area, and at the same time play a flexible protection and isolation protection role to avoid the feeling of hard objects, and also ensure the durability and anti-aging of the brush head body, enhance the overall aesthetics, and have a soft and elastic feel, thereby improving the overall experience.

[0043] In addition, the processing pattern of the outer rubber layer is simple, which can also simplify the production process, reduce the production difficulty, and improve the yield.

[0044] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An elastic brush head of an electric toothbrush, comprising a brush head body and bristles mounted on the brush head body, characterized in that: The brush head body comprises an inner elastic body and an outer rubber layer arranged on the outer layer of the inner elastic body, wherein the outer rubber layer is a soft rubber layer, the inner elastic body comprises an integrally connected brush head and a supporting part, the brush head comprises a bristle surface for fixing the bristles, and the bristles are arranged on the bristle surface; The outer rubber layer wraps the outer surface of the brush head and the support part, and only exposes the bristle surface to form a hollow area to give way to the bristle surface.

2. The elastic brush head of the electric toothbrush according to claim 1, characterized in that: The inner elastic body is an elastic hard colloid.

3. The elastic brush head of the electric toothbrush according to claim 1, characterized in that: The inner elastic body is integrally injection molded.

4. The elastic brush head of the electric toothbrush according to claim 1, characterized in that: The outer rubber layer and the inner elastic body are simultaneously molded by injection molding at one time; or the inner elastic body and the outer rubber layer are sequentially molded by injection molding.

5. The elastic brush head of the electric toothbrush according to any one of claims 1 to 4, characterized in that: An inner bracket for connecting the electric toothbrush body is arranged in the inner elastic body.

6. The elastic brush head of the electric toothbrush according to any one of claims 1 to 4, characterized in that: The brush head is an arc-shaped flat body.

7. The elastic brush head of the electric toothbrush according to any one of claims 1 to 4, characterized in that: The support portion is a column that is thin at the top and thick at the bottom.

8. The elastic brush head of the electric toothbrush according to any one of claims 1 to 4, characterized in that: The bristles are embedded on the bristle surface of the brush head by injection molding.

9. An electric toothbrush, characterized in that: It comprises an electric toothbrush body and the elastic brush head of the electric toothbrush according to any one of claims 1 to 8, wherein the elastic brush head of the electric toothbrush is detachably assembled on the electric toothbrush body.

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