JPH09319484A - Production and product of rubber push key with protection layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the control of a production process, to enhance the satisfactory article rate and to reduce the production cost by spotting liquid-state silicone resin on the surface of a rubber push key with various distributed forms and capacitances, heating it at a specified temperature and hardening the soft protection layer into solid. SOLUTION: The surface 10 of a rubber push key 1 produced through kneading and molding is printed by a rubber ink, heated and set and through injection molding, a completely printed rubber push key article is provided. A liquid-state silicone resin is spotted on the surface 10 of such a rubber push key 1. Then, that liquid-state resin is placed on the surface of the rubber push key 1 with the various distributed forms and capacitances while using mechanical facilities and a protection layer 2 is formed on the surface 10 of the rubber push key 1. Further, it is heated for five minutes by a heating furnace at 60 deg.C afterwards heated for 10 minutes at 120 deg.C and the soft protection layer 2 is hardened into solid. after the end of quality check, the complete article is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a product for manufacturing a type of rubber protective layer push key, and more particularly, the manufacturing process is simple, the manufacturing process can be easily controlled, the yield rate can be increased, and the manufacturing cost can be improved. And a product manufactured by the manufacturing method.

[0002]

2. Description of the Related Art With the progress of science and technology, the opportunities for automated equipment to enter companies and homes and to interact with people by pressing keys, such as mobile phones, remote controllers, and electronic computers, are increasing. There is. In addition, all such equipment is required to be light and have a small volume and high durability.

The well-known method of manufacturing a rubber push key which is currently used is to use mechanical equipment to first apply an intermediate substance, and then add a liquid resin onto the rubber push key and heat it to cure it. A solid protective layer is formed later, and the function of a convex lens is formed on the arc surface on the solid protective layer to achieve the effect of enlarging the characters or the design on the push key and displaying them easily. However, this manufacturing method is considerably complicated, has a high production cost, and does not meet the economical demand for mass production. In addition, it is difficult to control the manufacturing process, and problems such as overflow of liquid resin are likely to occur, and it has not been possible to increase the yield rate. Also, it does not comply with different key shapes and designs by customers. From the above, there has been a demand for improvement in the conventional push key manufacturing method.

[0004]

SUMMARY OF THE INVENTION According to the present invention, immediate adhesion is possible without the need to apply an intermediate substance or special treatment between the protective layer and the rubber pressing key, the manufacturing process is simple, and the liquid resin overflows. , The manufacturing process is easy to control, the yield rate is high, the production cost can be reduced, and it is possible to comply with different push key shape designs from customers relatively easily. It is an object of the present invention to provide a method and a product for manufacturing a kind of rubber protective layer push key, which also has the effects of enlarging the characters and excellent abrasion resistance.

[0005]

The invention according to claim 1 comprises: a. A step of manufacturing a rubber push key 1 through steps such as refining and molding using a silicone resin, b. A step of printing a font on the surface of the rubber pressing key, heating and casting to obtain a finished rubber pressing key finished product, c. The step of spotting the liquid resin on the surface of the rubber pressing key with various distribution shapes and capacities using mechanical equipment. d. Heating at 60 degrees Celsius for 5 minutes, then 120 degrees Celsius for 10 minutes to cure the soft protective layer to a solid state, e. The method for manufacturing a rubber protective layer pressing key includes the steps of making a finished product after quality inspection and steps a to e described above.

According to a second aspect of the present invention, there is provided a method of manufacturing a rubber protective layer pressing key according to the first aspect, wherein an arcuate surface is formed on the protective layer and the arcuate surface forms a convex lens action. And the manufacturing method.

A third aspect of the present invention is the method for manufacturing a rubber protective layer pressing key according to the first aspect, in which the protective layer is formed by spotting the liquid rubber in step c,
A manufacturing method is characterized in that a method using a mold is replaced, that is, a liquid resin is injected into the mold to be molded, and then a rubber press key which has already been molded is brought into close contact with the molded product and heated under pressure. .

According to a fourth aspect of the present invention, there is provided the method of manufacturing the rubber protective layer pressing key according to the first aspect, wherein the heat curing in the step d is replaced with room temperature dry curing.
The manufacturing method is used.

According to a fifth aspect of the present invention, a rubber push key and a protective layer are provided, and a font is printed on the surface of the rubber push key.
The protective layer is formed on the surface of the rubber pressing key, an arc surface is formed on the protective layer, and the material of the protective layer and the material of the rubber pressing key are silicon resins having the same chain-bonded structure. It is used as a protective layer push key product.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a manufacturing flow chart of the present invention.
It includes the following steps. a. A step of manufacturing the rubber push key 1 (see FIG. 2) manufactured through steps such as refining and molding. Rubber push key 1
Is manufactured with silicone resin (HTV solid silicone rubber). b. A step of printing the surface 10 of the rubber pressing key 1 with a rubber-based ink, heating it to cure it, and casting it to obtain a completed rubber pressing key finished product. Since the above steps a and b belong to the well-known technique and are not the scope of the present invention, detailed description thereof will be omitted here. c. Step of spotting liquid resin on the surface 10 of the rubber push key 1. In this step, liquid resin is placed on the surface 10 of the rubber pressing key 1 in various distribution shapes and capacities using mechanical equipment, and the protective layer 1 is formed on the surface 10 of the rubber pressing key 1. According to the step, the function of the convex lens can be formed by the arcuate surface 20 of the protective layer 1, and the character or the design on the rubber pressing key is enlarged and easily recognized. The protective layer 2 is made of transparent silicone resin (RTV or LIS liquid silicone rubber), and the material used for the protective layer 2 and the material of the rubber pressing key 1 are combined in a chain of Si-O-Si-O-Si. Therefore, it adheres firmly without applying an intermediate substance or performing a special treatment. Moreover, since the same material has the same surface tension, the liquid resin does not overflow or become unsatisfied. Further, the method of spotting the liquid rubber to form the protective layer is replaced by a method using a mold, in which case the above-mentioned liquid resin is injected into the mold for molding, and the molding is already completed. The rubber press key 1 may be brought into close contact with the rubber press key 1 and heated under pressure. d. Heat in a 60 degree Celsius furnace for 5 minutes, then 1 degree Celsius
By heating at 20 degrees for 10 minutes, the soft protective layer 2 is cured to be a solid. The hardness is JIS 50 ° to 90 °. Also, this heat curing step can be replaced with a step of drying and curing at room temperature. e. After the quality inspection, finished product.

Shown in FIG. 2 is the structure of the rubber protective layer push key product of the present invention, which is the rubber push key 1.
And a protective layer 2, and characters and designs are printed on the surface 10 of the rubber pressing key 1. The protective layer 2 is formed on the surface 10 of the rubber pressing key 1. Due to the convex lens action formed by the arcuate surface 20 on the protective layer 2, the characters or the design on the rubber pressing key are enlarged and easily identified. The rubber push key 1 is assembled on the casing 3.

As a result of repeated experiments, it was found that the rubber protective layer push key product of the present invention has the following characteristics. This also proves the superiority of the manufacturing method and product of the rubber protective layer push key of the present invention.
The features of the product of the present invention are: Since the protective layer and the rubber pressing key of the present invention are adhered to each other without applying an intermediate substance or special treatment, the manufacturing process is simplified. 2. Since the present invention does not cause the problem of liquid resin overflow, the manufacturing process can be easily controlled, and the yield rate can be increased. 3. The present invention can reduce the production cost and meet the economic demand of mass production. 4. The present invention is relatively satisfying to different customer push key shape designs. 5. The present invention has the effect of character expansion and abrasion resistance as in the prior art.

[0013]

Summarizing the present invention, the present invention provides a known method for manufacturing a rubber protective layer press key, which has a complicated manufacturing method, a complicated manufacturing process,
This is an invention that can solve problems such as the failure to raise the non-defective rate and has industrial utility value.

[Brief description of drawings]

FIG. 1 is a manufacturing flow chart of the present invention.

FIG. 2 is a sectional view of the product of the present invention.

[Explanation of symbols]

1 ... Rubber push key 10 ... Surface 2 ... Protective layer 20 ... Arc surface 3 ... Casing

Claims (5)

[Claims] 1. A method comprising: a. A step of manufacturing a rubber push key 1 through steps such as refining and molding using a silicone resin, b. A step of printing a font on the surface of the rubber pressing key, heating and casting to obtain a finished rubber pressing key finished product, c. The step of spotting the liquid resin on the surface of the rubber pressing key with various distribution shapes and capacities using mechanical equipment. d. Heating at 60 degrees Celsius for 5 minutes, then 120 degrees Celsius for 10 minutes to cure the soft protective layer to a solid state, e. After the quality inspection, the steps to make a finished product, including the above steps, the manufacturing method of the rubber protective layer push key. 2. The method of manufacturing a rubber protective layer pressing key according to claim 1, wherein an arc surface is formed on the protection layer, and a convex lens action is formed by the arc surface. . 3. The method for manufacturing a rubber protective layer pressing key according to claim 1, wherein the method of forming the protective layer by spotting the liquid rubber in step c is replaced with a method using a mold. That is, after injecting the liquid resin into the mold and molding,
A method for manufacturing, characterized in that the rubber press key which has already been molded is brought into close contact with the rubber press key and heated under pressure. 4. The method for manufacturing a rubber protective layer pressing key according to claim 1, wherein the heat curing in the step d is replaced with room temperature dry curing. 5. A rubber pressing key and a protective layer are provided, a font is printed on the surface of the rubber pressing key, the protective layer is formed on the surface of the rubber pressing key, and an arc surface is formed on the protective layer. The product of the rubber protective layer pressing key, wherein the material of the protective layer and the material of the rubber pressing key are silicon resins having the same chain-like bond structure.