JPH08186625A - Key with pattern - Google Patents

Abstract

PURPOSE: To obtain a key with pattern, which is not naturally stripped off and which is not damaged by a mischief by a knife. CONSTITUTION: Metallic powder or ceramic powder is mixed with a binder consisting of synthetic resins and wax and it is injected into a clearance 8 formed between an external fixed die 6 and an internal movable die 7. Then, an outer peripheral part 1 consisting of a surface push surface 3 with pattern grooves 10 passing through an inner part and an outer part and of a side peripheral wall part 4. Synthetic resins obtained by mixing colored synthetic resins or metallic powder or ceramic powder is insertion-formed on the inner surface of the outer peripheral part 1 and an inner peripheral part whose part is invaded and buried into the pattern grooves 10 is formed so as to form the key with pattern. When the pattern has an isolated part 17 such as '6', '8' and '#', a connection groove passing the lower surface of the isolated part 17 is formed on the ceiling part of the inner movable mold 7, and a connection rod is formed on the inner-side of the isolated part 17. The isolated part 17 is integrally connected to the outer peripheral part by the connection rod.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button (dial button) for a telephone, a button for a computer, a word processor keyboard, etc. with a pattern (general term for letters, symbols, pictures and patterns).

[0002]

2. Description of the Related Art Conventionally known pushbuttons for public telephones, in particular, are made of zinc die-cast material coated with nickel and chrome plating, and the surface of the figures such as numbers and kana characters is baked with black paint. There were many things. The purpose of plating the surface of the zinc die casting material with nickel or chrome is to provide it with weather resistance. Note that a ceramic button with white printing is also known separately.

[0003]

Among the above, in the case where the zinc die casting is nickel or chrome plated and the pattern made of black paint is baked, the baked paint often peels off spontaneously and becomes unreadable. It had a life span of a few years. The latter, which was printed on ceramics, also had a problem in that it would peel off in a few years and become unreadable. In addition to natural peeling, payphones were often damaged by mischief in which a pattern was scraped off with a metal blade. Therefore, the present inventor has developed a special button in which a pattern groove penetrating inside and outside is formed on the outer peripheral surface of the button and the colored synthetic resin is embedded in the pattern groove. Since this button has the colored synthetic resin buried in the pattern groove, it does not become unreadable due to spontaneous peeling and does not get scratched even if the pattern is scraped off with a metal blade by mischief. However, if a pattern groove penetrating inside and outside is formed, there is no problem in the case where there is no free portion such as 1 or 2,
In the case of # or 8, since the free portion is formed in the center, the free portion comes off.

[0004]

[Purpose] To prevent the loosened part from falling when using a patterned button that will not be damaged by tampering as well as by natural peeling.

[0005]

According to the present invention, therefore, a metal powder or a ceramic powder is mixed with a binder made of synthetic resin and wax and the mixture is formed between the fixed mold 6 on the outer side and the movable mold 7 on the inner side. The outer peripheral portion 1 having the side peripheral wall portion 4 and the front portion push surface 3 having the pattern groove 10 penetrating inside and outside is formed by being injected into the formed gap 8, and the colored synthetic resin is formed on the inner surface of the outer peripheral portion 1. Alternatively, a synthetic resin mixed with a metal powder or a ceramic powder is insert-molded to form an inner peripheral portion 2 partly invading and buried in the pattern groove 10 to form a pattern 16
When the pattern 16 has a free portion 17 as shown in 6, 8, and # in the button having the above-mentioned shape, a coupling groove passing through the lower surface of the free portion 17 is provided in the ceiling portion 18 of the inner movable mold 7. 19 is formed, and a connecting rod 20 is formed on the inner surface side of the releasing portion 17, and the releasing portion 17 is a button with a pattern integrally connected to the outer peripheral portion 1 by the connecting rod 20. Further, the loose portion 17 formed on the ceiling portion 18 is a cross-shaped patterned button. The pattern 16 is a button with a pattern which is transparent and is illuminated from the inside.

[0006]

EXAMPLE The present invention provides a button with a pattern, such as a keyboard,
In order to prevent not only natural peeling but also damage by tampering with a blade, a pattern groove is formed on the front push surface, and defects in the pattern groove filled with synthetic resin etc. are prevented. When describing a button with a pattern such as a special keyboard, 1 is an outer peripheral portion, 2 is an inner peripheral portion, and the outer peripheral portion 1 and the inner peripheral portion 2 form a whole. Reference numeral 3 denotes a front push surface on the surface of the outer peripheral portion 1, 4 denotes a side peripheral wall portion integrally connected to the front push surface 3, and a flange portion 5 is formed at a lower end of the side peripheral wall portion 4. . Then
The outer peripheral portion 1 is formed of stainless powder or ceramic powder by the following method. That is, the stainless powder or ceramic powder is mixed with a binder made of synthetic resin and wax, and this is heated by a heating device to be melted and formed between the fixed mold 6 and the movable mold 7 as shown in FIG. The outer peripheral portion 1 is obtained by injection from the injection port 9 into the gap 8 and by an injection molding method. The outer peripheral portion 1 thus obtained
Since stainless steel powder or ceramic powder is hardened with synthetic resin, when it is taken out and heated by a heating device, the synthetic resin component is easily evaporated and only the stainless steel powder or ceramic powder component remains, leaving the firing device. The outer peripheral portion 1 of the sintered stainless steel or ceramics product can be easily obtained by sintering.

When the fixed die 6 used at this time is integrally formed with the groove die 11 of the pattern groove 10 penetrating inside and outside at the front surface push surface 3 of the outer peripheral portion 1, the pattern groove 10 is simultaneously formed. However, the pattern groove 10 is formed so that the inner side is narrow and the outer side is wide. As shown in FIG. 6, another die 12 is inserted into the inside of the outer peripheral portion 1 thus sintered, and a gap 13 is formed between the inner surface of the outer peripheral portion 1 and the outer surface of the die 12.
Is formed, and the outer surface of the pattern groove 10 is sealed with the mold 14,
When the colored synthetic resin or the synthetic resin mixed with the metal powder or the ceramic powder is injected from the injection port 15, the inner peripheral portion 2
Is insert-molded, and a part of it is bite to bury the pattern groove 10 to form the pattern 16.
The synthetic resin used at this time is more preferably a weather resistant and fire extinguishing resin (ABS, polycarbonate).

The pattern 16 may be transparent so that it is illuminated from the inside. At that time, a transparent resin such as acrylic or polycarbonate is used as the synthetic resin, and the ceramic powder is Use a glassy one. When the pattern 16 formed in this way is such that the pattern 16 is 1, 2, 3, 5, 7, *, the free portion 17 does not exist.
A pattern 16 such as #, 4, 6, 8, 9 has a round free portion 17 in 6, 8, 9 and a square free portion 17 is formed in the case of #. Therefore, according to the present invention, in the case of #, FIG.
As described above, a ten-shaped coupling groove 19 is formed in the ceiling portion 18 of the movable die 7, and the movable die 7 has an outer peripheral portion 1 as shown in FIG.
When it is formed, it is also injected into the coupling groove 19 to form the coupling rod 20 as shown in FIG.
Is integrally connected to and fixed to.

[0009]

When the pattern 16 does not have the loose portion 17, the stainless powder or the ceramic powder is mixed with the synthetic resin and the binder such as wax, heated and melted, and then the fixed mold 6
The outer peripheral portion 1 is obtained by injecting from the injection port 9 into a gap 8 formed between the movable mold 7 and the movable mold 7 in the same manner as in injection molding of plastic. The movable mold 7 used in this case is that shown in FIG.
In the case of the pattern 16 having the loosened portion 17, as shown in FIG. 8, the movable mold 7 having the coupling groove 19 formed in the ceiling portion 18 is used, and when the outer peripheral portion 1 is formed, it is injected into the coupling groove 19 portion. Then, the connecting rod 20 is formed and the free portion 17 is connected. The stainless steel powder or ceramic powder thus obtained is hardened with a synthetic resin,
It is necessary to remove the synthetic resin component, and when the resin component is sucked and stored in a decompressed chamber and heated, the synthetic resin component evaporates and is easily sucked and removed, leaving only the stainless steel powder or the ceramic powder component. When this is stored in a firing device and sintered,
It is possible to obtain a product of sintered metal such as stainless steel or ceramics.

At this time, since the fixed die 6 is integrally formed with the groove die 11 of the pattern groove 10 penetrating in and out at the front surface push surface 3 of the outer peripheral portion 1, the pattern groove 10 is simultaneously formed. To be done. Next, another die 12 is inserted inside the sintered outer peripheral portion 1 to form a gap 13 between the inner surface of the outer peripheral portion 1 and the outer surface of the die 12, and the outer surface of the pattern groove 10 is removed. Mold 14
After sealing with, the synthetic resin having a high weather resistance and self-extinguishing property or a synthetic resin mixed with metal powder or ceramic powder is inserted from the injection port 15 of the die 12, and a part of the self-extinguishing resin is removed. The pattern 16 is buried in the pattern groove 10 to form the pattern 16, and the inner peripheral portion 2 is formed.
A considerable effect can be expected by using an ordinary synthetic resin instead of the weather-resistant and self-extinguishing synthetic resin. Further, if the pattern 16 is transparent and is illuminated from the inside, it becomes easy to use at night.

[0011]

According to the present invention, a metal powder or a ceramic powder is mixed with a binder made of synthetic resin and wax, and the mixture is placed in a gap 8 formed between an outer fixed die 6 and an inner movable die 7. An outer peripheral portion 1 having a side peripheral wall portion 4 and a front surface push surface 3 having a pattern groove 10 penetrating inside and outside is formed to form an outer peripheral portion 1, and the inner surface of the outer peripheral portion 1 is colored synthetic resin, metal powder or ceramics. A synthetic resin mixed with powder is insert-molded to form an inner peripheral portion 2 that partially penetrates and is buried in the pattern groove 10 to form a button having a pattern 16. , #, There is a free part 17, the ceiling part 18 of the movable mold 7 on the inside.
Is formed with a coupling groove 19 passing through the lower surface of the loose portion 17, and a coupling rod 20 is formed on the inner surface side of the loose portion 17 so that the loose portion 17 is integrally coupled to the outer peripheral portion 1 by the coupling rod 20. Since it is a button with a pattern, the outer peripheral portion 1 is made of metal powder or ceramics powder, so that it is not only durable but not damaged even by mischief, but the pattern 16 has a pattern of 6, 8 or #. Even with the loose part 17, the ceiling 18 of the movable mold 7 is formed with the coupling groove 19 that passes through the lower surface of the loose part 17, so that the loose part 17 is integrated with the outer peripheral part 1 by the coupling rod 20. Has the effect of being combined. In addition, the loose portion 17 formed on the ceiling portion 18
Is a cross-shaped patterned button, so it is robust. Further, since the pattern 16 is a button with a pattern which is transparent and is illuminated from the inside, it is easy to use at night.

[Brief description of drawings]

FIG. 1 is an overall plan view.

FIG. 2 is an overall front view.

FIG. 3 is an overall right side view.

FIG. 4 is a cross-sectional view of injection molding of the outer peripheral portion.

FIG. 5 is a sectional view of an outer peripheral portion.

FIG. 6 is an insert state diagram of the inner peripheral portion.

FIG. 7 is an overall sectional view.

FIG. 8 is a perspective view of a movable ceiling portion.

FIG. 9 is a perspective view of a connecting rod.

FIG. 10 is a plan view of an outer peripheral portion.

FIG. 11 is an insert state diagram of an inner peripheral portion having a connecting rod of the present invention.

FIG. 12 is a sectional view of the outer peripheral portion of the present invention.

[Explanation of Codes] 1 ... Outer peripheral portion, 2 ... Inner peripheral portion, 3 ... Front push surface, 4 ... Side peripheral wall portion, 5 ... Collar portion, 6 ... Fixed type, 7 ... Movable type, 8 ... Gap, 9 ... Injection port, 10 ... Pattern groove, 11 ... Groove type, 12 ... Mold, 13 ... Gap, 14 ... Mold, 15 ... Injection port, 16 ... Pattern, 17 ... Free part, 18 ... Ceiling part, 19 ... Coupling groove , 20
… Combined rod.

Claims (3)

[Claims] 1. A metal powder or a ceramic powder is mixed with a binder made of a synthetic resin and wax, and the mixture is injected into a gap 8 formed between an outer fixed mold 6 and an inner movable mold 7. Partial wall 4 and pattern groove 1 penetrating inside and outside
An outer peripheral portion 1 having a front push surface 3 having 0 is formed, and the inner surface of the outer peripheral portion 1 is insert-molded with a colored synthetic resin or a synthetic resin mixed with metal powder or ceramic powder Is a button having a pattern 16 formed by forming an inner peripheral portion 2 invading and buried in the pattern groove 10. When the pattern 16 has a free portion 17 like 6, 8 and #, the A coupling groove 19 that passes through the lower surface of the loose portion 17 is formed in the ceiling portion 18 of the inner movable die 7, and a coupling rod 20 is formed on the inner surface side of the loose portion 17 so that the loose portion 17 is connected by the coupling rod 20. A button with a pattern that is integrally connected to the outer peripheral portion 1. 2. The patterned button according to claim 1, wherein the free portion 17 formed on the ceiling portion 18 has a cross shape. 3. The patterned button according to claim 1, wherein the pattern 16 is transparent and is illuminated from the inside.