Nano injection molding structure of electric toothbrush

Abstract

The utility model discloses an electric toothbrush nanometer injection molding structure which comprises a hardware outer shell, a plastic protection inner layer is formed in the hardware outer shell through the nanometer injection molding processing technology, a plurality of connecting structural parts are preformed on the inner end face of the hardware outer shell, the connecting structural parts are embedded into the plastic protection inner layer, and the plastic protection inner layer is embedded into the hardware outer shell. The plastic protective inner layer is tightly combined on the inner layer of the hardware outer shell through the connecting structural member; by means of the mode that the connecting structural part is arranged in the hardware outer shell, when the processing technology of nanometer injection molding of the plastic protection inner layer is carried out, the connecting structural part is embedded into the formed plastic protection inner layer, and the effect that the plastic protection inner layer is tightly combined to the inner layer of the hardware outer shell is achieved; and the connecting structural member adopts an inverted buckling structure, so that the plastic protective inner layer and the hardware outer shell can be combined and not separated, and the electric toothbrush product with the metal shell has good waterproof air tightness.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric toothbrushes and relates to a nano injection molding structure of an electric toothbrush. Background Art

[0002] It is difficult for traditional toothbrushes to completely remove dental plaque. In addition, improper brushing methods can greatly reduce the cleaning effect of brushing. Electric toothbrushes use high-speed vibrations to drive the brush head to rotate or vibrate to achieve the effect of cleaning teeth. Experiments have shown that electric toothbrushes remove 38% more dental plaque than manual toothbrushes. Its cleaning ability has been unanimously recognized by oral experts. Therefore, in recent years, it has become the first choice of toothbrushes for more and more people who pay attention to oral health.

[0003] However, electric toothbrushes have strict requirements for waterproofness and airtightness due to their use environment, such as Figure 2 As shown, the electric toothbrush with a metal shell A currently has a plastic structural component B formed inside by nano injection molding to achieve the effect of improving waterproof and airtightness; however, due to the product structure, material and subsequent processing technology, the bonding strength between the plastic structural component B and the metal shell A cannot be guaranteed, resulting in a risk of poor waterproof and airtightness of the product. Utility Model Content

[0004] In order to solve the implementation technical problems, the utility model adopts the following technical solutions:

[0005] A nano injection molding structure of an electric toothbrush comprises: a metal outer shell, the interior of which is molded with a plastic protective inner layer by a nano injection molding process, a plurality of connection structural parts preformed on the inner end surface of the metal outer shell, the connection structural parts are embedded in the plastic protective inner layer, and the plastic protective inner layer is tightly combined with the inner layer of the metal outer shell by the connection structural parts.

[0006] As a further solution of the utility model: the hardware outer shell is formed by a stamping process.

[0007] As a further solution of the utility model: an undercut structure is formed on the connecting structural member.

[0008] As a further solution of the utility model: the connecting structural parts inside the hardware outer shell are formed in the hardware outer shell by a butt welding processing method.

[0009] The beneficial effects of the utility model are as follows: by arranging a connecting structure inside the hardware outer shell, the connecting structure is embedded in the molded plastic protective inner layer during the nano-injection molding process of the plastic protective inner layer, thereby achieving the effect of tightly combining the plastic protective inner layer with the inner layer of the hardware outer shell, and the connecting structure adopts an inverted structure, which can ensure that the plastic protective inner layer and the hardware outer shell are inseparable, thereby ensuring that the electric toothbrush product with a metal shell has good waterproof and airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model.

[0011] Figure 2 It is a schematic diagram of the prior art structure. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. It should be understood that the present application is not limited to the example embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0013] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] The utility model provides Figure 1 In the embodiment of the utility model, a nano injection molding structure of an electric toothbrush includes: a metal outer shell 1, which is formed by a stamping process; in order to improve the waterproof and airtightness of the product, the interior of the metal outer shell 1 is formed with a plastic protective inner layer 2 by a nano injection molding process; and in order to ensure the structural bonding force between the metal outer shell 1 and the plastic protective inner layer 2, the inner end surface of the metal outer shell 1 is formed with a plurality of connecting structural parts 11 for improving the bonding force; when the metal outer shell 1 is placed in an injection mold and the nano injection molding process of the plastic protective inner layer 2 is performed, the connecting structural part 11 will be embedded in the molded plastic protective inner layer 2, so as to achieve the tight bonding of the plastic protective inner layer 2 to the inner layer of the metal outer shell 1;

[0015] Furthermore, in order to achieve a tighter combination between the plastic protective inner layer 2 and the metal outer shell 1 , an undercut structure is formed on the connecting structure 11 , thereby ensuring that the plastic protective inner layer 2 and the metal outer shell 1 are closely combined.

[0016] In order to ensure the structural stability between the hardware housing 1 and the connecting structure 11 , the connecting structure 11 inside the hardware housing 1 is formed in the hardware housing by a butt welding process.

[0017] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "including a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0018] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nano injection molding structure for an electric toothbrush, comprising: A hardware outer shell, the interior of which is formed with a plastic protective inner layer by a nano injection molding process, and is characterized in that a plurality of connecting structural parts are preformed on the inner end surface of the hardware outer shell, the connecting structural parts are embedded in the plastic protective inner layer, and the plastic protective inner layer is tightly combined with the inner layer of the hardware outer shell through the connecting structural parts.

2. The electric toothbrush nano injection molding structure according to claim 1, characterized in that: The metal shell is formed by stamping process.

3. The electric toothbrush nano injection molding structure according to claim 1, characterized in that: An undercut structure is formed on the connecting structural member.

4. The electric toothbrush nano injection molding structure according to claim 1, characterized in that: The connecting structural parts inside the hardware shell are formed in the hardware shell by a butt welding processing method.

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