Rubber coating structure and button with rubber coating structure

Abstract

The invention discloses a rubber coating structure and a button with the rubber coating structure. The rubber coating structure comprises a hard body (3) and a soft rubber body (4) coating the periphery of the hard body (3), the hard body (3) comprises a convex step part, and the soft rubber body (4) is provided with an annular main body part (40) surrounding the periphery of the step part; and the main body part (40) is connected with the step part in a tooth groove manner. A tooth groove type connecting structure is adopted between the soft rubber body and the hard body, the connecting tightness between the soft rubber body and the hard body can be effectively improved, the contact area is increased, the resistance when the soft rubber body deforms is increased, deformation of the soft rubber body is reduced, the condition that normal use of the equipment is influenced by falling of the soft rubber body from the hard body in use is effectively prevented, the service life is greatly prolonged, the use reliability is greatly improved, and the product competitiveness is favorably improved.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a rubber-encapsulated structure and a button with the rubber-encapsulated structure. Background technique [0002] In the plastic products in the prior art, it is often necessary to connect the soft rubber and the hard body to each other. The soft rubber is a soft and elastic plastic layer, such as TPU (thermoplastic polyurethane elastomer rubber) material, and the hard The body can be made of hard plastic or metal, such as PC (polycarbonate), aluminum alloy, etc. Compared with soft rubber, the hard body has higher hardness, poor elasticity, and is not easy to deform. Since the soft rubber and the hard body cannot be integrated during injection molding, the molecular force between the two is relatively weak. Therefore, in order to connect the soft rubber and the hard rubber, the soft rubber is usually wrapped in a Lagging structure on hard rubber. [0003] Such as fi...

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Problems solved by technology

[0004] However, although the first convex portion 20 and the second convex portion 21 in the above structure can provide a certain anti-off resistance when the soft rubber body 2 is stressed, because the soft rubber material is relatively soft, it is easy to deform after being stressed, and The covering length of the first convex part 20 and the second convex part 21 should not be too large, and the soft colloid 2 is still easy to separate from the hard body 1 during the use of the button with the above rubber-encapsulated structure, which will cause the button to fail, and it is difficult to ensure the reliable use of the button. Sex and service life, which in turn affects the normal use of the entire electronic product

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