Brush head structure of electric toothbrush

Abstract

The utility model relates to a brush head structure of an electric toothbrush and belongs to the technical field of electric toothbrushes. Comprising a brush handle, a cover plate, soft rubber and brush wires, the brush wires are fixed in corresponding pores of the brush handle in a hot melting mode, the cover plate is fixedly installed on one side of the brush handle, the soft rubber wraps and is fixed to the outer side of one end of the brush handle, a boss flush with the soft rubber face is arranged on the back face of the cover plate, and a step is arranged on the bottom face of the cover plate and sinks into one end of the brush handle by 0.4-0.8 mm. The boss on the back face of the cover plate is flush with the soft rubber face, a soft rubber mold is pressed downwards to the boss face during secondary injection molding, the cover plate is completely attached to the head of the brush handle, and therefore secondary injection molding soft rubber is prevented from entering the inner side to damage brush wires; the bottom surface of the cover plate is provided with a step which sinks into the brush head by 0.4-0.8 mm, so that the cover plate is prevented from warping, shifting, deviating and the like due to injection molding pressure during secondary injection molding and rubber coating.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric toothbrush brush head structure, belong to electric toothbrush technical field. BACKGROUND

[0002] Electric toothbrush is through the rapid rotation or vibration of motor core, make brush head produce high-frequency vibration, instantaneously toothpaste is decomposed into fine foam, to clean teeth with life utensil,

[0003] In prior art, toothbrush bristle and toothbrush brush head are often fixedly connected by simple hot melting, which can easily cause the damage of inner bristle, and when installing toothbrush brush head, the cover plate can be warped, displaced or the like due to injection pressure, affecting the service life of toothbrush. SUMMARY

[0004] The utility model solves the technical problems that the existing electric toothbrush brush head structure is prone to damage of bristle, displacement of cover plate and the like during installation, affecting the service life of toothbrush.

[0005] To solve the above problems, the utility model provides an electric toothbrush brush head structure, which comprises a brush handle, a cover plate, soft glue and bristles, the bristles are fixed in the corresponding pores of the brush handle by hot melting, the cover plate is fixedly installed on one side of the brush handle, the soft glue is wrapped and fixed on the outer side of one end of the brush handle, the back surface of the cover plate is provided with a boss flush with the surface of the soft glue, and the bottom surface of the cover plate is provided with a step sunk into one end of the brush handle by 0.4-0.8 mm.

[0006] Compared with the prior art, the utility model has the following advantages:

[0007] The boss on the back surface of the cover plate is flush with the surface of the soft glue, the soft glue mold is pressed down to the boss surface during secondary injection molding, the cover plate is completely attached to the head of the brush handle, preventing the secondary injection soft glue from entering the inside and causing damage of bristle, and the step on the bottom surface of the cover plate is sunk into the brush head by 0.4-0.8 mm, preventing the cover plate from being warped, displaced or deviated due to injection pressure during secondary injection molding. BRIEF DESCRIPTION OF DRAWINGS

[0008] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, which are used together with embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0009] Figure 1 It is an explosion of the utility model of a kind of electric toothbrush brush head structure Figure 1 .

[0010] Figure 2 It is an explosion of the utility model of a kind of electric toothbrush brush head structure Figure 2 .

[0011] In the drawings:

[0012] 1, brush handle; 2, cover plate; 21, boss; 22, step; 3, soft glue; 4, brush wire. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0014] In combination with the drawings, Figures 1-2 The present application provides a kind of electric toothbrush head structure, including brush handle, cover plate, soft glue and brush wire, brush wire hot melt is fixed in the pore corresponding to brush handle, cover plate is installed on brush handle, again place into injection molding machine, it is formed by injection molding machine secondary injection molding soft glue, soft glue is wrapped and fixed in the one end outside of brush handle, cover plate back surface is equipped with the boss flush with soft glue surface, cover plate bottom surface is equipped with step and sinks into the one end 0.4~0.8mm of brush handle, wherein the material of brush handle is ABS / PP, the material of brush wire is nylon / PBT, the material of cover plate is ABS / PP, and the material of soft glue is TPU / TPE.

[0015] The present application designs cover plate in brush handle, cover plate back surface boss flush with soft glue surface, soft glue mold is pressed to the boss surface when secondary injection molding, so that cover plate is completely attached to brush head, to prevent secondary injection molding soft glue from entering inside and causing brush wire damage;Cover plate bottom surface is designed step and sinks into the brush head of brush handle 0.4~0.8mm, prevents cover plate from being warped, displaced and offset when secondary injection molding.

[0016] The present application and its implementation mode are described above, and this description is not restrictive. The shown in the drawings is only one of the embodiments of the present application, and the actual structure is not limited to this. In general, if the ordinary skilled in the art is inspired, without departing from the creative purpose of the present application, without creative design, similar structure mode and embodiments of the technical solutions should belong to the protection scope of the present application.

Claims

1. An electric toothbrush head structure, characterized in that: The utility model relates to a toothbrush, including brush handle, cover plate, soft glue and brush silk, the brush silk hot melt is fixed in the corresponding hole of brush handle, the cover plate fixed installation with one side of brush handle, the soft glue is wrapped and fixed in one end outside of brush handle, the back surface of cover plate is equipped with the boss with the flush surface of soft glue, the bottom surface of cover plate is equipped with the step and sinks into one end of brush handle 0.4~0.8mm.

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