KR100650514B1 - Key frame key pad and method for manufacturing the same - Google Patents

Abstract

A key frame key pad and a fabrication method thereof are provided to provide various shapes and colors of a button sheet of the key frame key pad according to the fondness of a user, by forming the height of a pressure pad easily according to the specification of a mobile phone. According to a key frame key pad used in a mobile phone, a pad(10) is formed with a hard synthetic resin material, in order to form a number of button holes formed with a number of function key button holes(22) and a number of number/character key button holes(24). A pressure pad(30) is formed in a body with the inside of the button hole, in order to form a pressure protrusion on a bottom. A button sheet(40) is displayed with symbols, figures or characters and numbers on the upper plane of the pressure pad.

Description

Key frame keypad and method for manufacturing the same

1 is a block diagram schematically showing a manufacturing step of the present invention.

2a to 2c schematically illustrate the steps of manufacturing the key frame keypad of the present invention,

   Figure 2a is a principal part showing a pad formed by the pad forming step.

   Figure 2b is a main portion of the pressure pad formed by the pressure pad forming step on the molded pad.

   Figure 2c is an exploded view of the main portion of the button sheet attached state by the button sheet attaching step on the upper surface of the pressure pad.

3 is a schematic longitudinal cross-sectional view of a key frame keypad produced by the present invention;

4A and 4B are sectional views schematically showing other embodiments of the present invention.

5 is an exploded perspective view illustrating main parts of a keypad for a mobile phone according to the related art.

Explanation of symbols for the main parts of the drawings

10: pad

20: buttonhole

   22: function key button hole 22a: direction key hole

   22b: function key hole 24: number / character key button hole

30: pressure pad

   32: pressing projection

40: button sheet

50: setting hole

100: keypad

The present invention relates to a keypad used in a mobile phone, and more particularly, a key frame keypad and a method for manufacturing the button sheet of a key frame keypad manufactured in the form of a frame to be provided in various colors or shapes according to a user's taste. It is about.

In general, a mobile phone is provided with a keypad as a switching means for generating a signal by numbers or letters printed or engraved according to a user's operation, and the present applicant also has a patent application No. 2005-124785 " Mobile phone keypad and its manufacturing method "bar, it will be described with reference to the accompanying drawings Figure 5 as follows.

As shown in the conventional keypad 100, a plurality of buttons 112 protruding from the surface is formed on the upper surface, each groove 114 is formed on the bottom of the button, insert injection or pressing on one side A button part sheet 110 in which a through hole 116 into which the double button 200 is formed and manufactured separately is formed; Corrugated protrusions 122 corresponding to the grooves are formed on the bottom surface of the button seat sheet, and protruding protrusions 124 protruding downward to contact the dome switch of the mobile phone are formed on the bottom of the protrusions. And, the attachment pad 120 is formed integrally formed by the known double injection method is formed integrally with the attachment portion 126 to which the double button is attached to one side.

In addition, the surface of the button is coated under a certain color, and the bottom coated surface is formed by printing or laser processing, such as letters or numbers, and after forming the letters or numbers by coating a transparent paint on the top To prepare a keypad used in the mobile phone.

However, the conventional keypad manufactured in this manner is formed so that each button is integrally formed in the button sheet sheet when the button sheet sheet is manufactured, and then the surface of the button is coated with the bottom coat, the letter or the number, and the top coat again. In order to perform the sequential, it is formed to be limited to the same color and shape has caused a problem that can not provide a button color and shape for various tastes of the user.

In addition, since the attachment pad is molded to have an area corresponding to the entire bottom surface of the button sheet, the cost also increases.

Accordingly, the present invention is to improve the patent application No. 2005-124785 "mobile phone keypad and its manufacturing method" that the applicant has filed in order to solve the conventional problems as described above, the object is a key frame keypad used in a mobile phone The purpose is to provide a button sheet of a variety of colors or shapes according to the user's taste.

Another object of the present invention is to be able to easily form the height of the pressure pad according to the specifications of the mobile phone.

Still another object of the present invention is to be able to mount and fix to an accurate position when assembling to the body case of the mobile phone.

The present invention for achieving the above object is, in the key frame keypad used in the mobile phone, a plurality of function key buttonholes to be penetrated up and down, and a plurality of numeric / character key buttonholes to the other side A pad formed of a hard synthetic resin material to form a button hole; Each of the button pads is integrally formed with the inner surface of the button hole by a double injection method such that a soft projection is injected into the bottom of the button hole so as to form a pressure protrusion on the bottom thereof; Each button sheet on which a symbol, a figure, or a letter or a number required is attached is attached to an upper surface of the subscription pad.

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The function key button hole may be formed of a plurality of direction key holes in the center and a plurality of function key holes located outside the direction key hole.

The button sheet attached to the upper surface of the pressing pad of the directional key hole is characterized in that formed in the integral form attached to the entirety of each pressing pad forming the directional key hole, or divided into attached only by each pressing pad forming the directional key hole. .

The surface of the pressure pad is characterized in that it is molded in the form protruding from the surface of the pad.

The surface of the pressure pad is characterized in that it is molded in the same surface as the surface of the pad.

The surface of the pressure pad is characterized in that it is molded in the form of a recess from the surface of the pad.

A plurality of setting holes protruding from the outer end of the pad is formed at the edge of the pad.

A method of manufacturing a key frame keypad for use in a mobile phone, the method comprising: a pad molding step of molding a pad by injecting a hard synthetic resin material such that a plurality of button holes are formed between upper and lower molds; A pressure pad molding step of molding the soft pad by injecting a soft synthetic resin into the button hole of the molded pad to form a pressure pad having a pressure protrusion formed on a bottom surface thereof; It characterized in that it comprises a button sheet attaching step of attaching a button sheet marked with symbols or figures and letters or numbers required separately produced on the upper surface of the pressure pad.

In the pad forming step, characterized in that it further comprises to be integrally formed with a plurality of setting holes protruding from the outer end on the edge of the pad.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing a manufacturing step of the present invention, Figures 2a to 2c schematically shows the step of manufacturing a key frame keypad of the present invention, Figure 3 is a key frame keypad manufactured by the present invention A schematic longitudinal section of the main part.

As shown in the manufacture of the key frame keypad 100 manufactured in the form of a frame that is a switching means for generating a signal by a user's operation in a mobile phone,

The present invention, in order to be able to provide a button sheet attached to the key frame keypad in a variety of colors or shapes according to the user's taste,

A pad is formed by injecting a hard synthetic resin material, such as PE, PP, or PC, so that a plurality of button holes 20 penetrating up and down are formed between upper and lower molds of a conventional injection mold machine, as shown in FIG. 2A. 10) A pad forming step S1 for molding is performed.

In the above, the button hole 20 formed in the pad 10 is formed to be divided into a plurality of function key button holes 22 on one side, and a plurality of numeric / letter key button holes 24 on the other side. desirable.

Then, the upper and lower molds in which the function hole button hole and the numeric / character key bottle hole, which are the button holes of the molded pad, are formed by the well-known double injection method as shown in FIG. The pressure pad molding step of forming a pressing pad 30 having a pressing protrusion 32 contacting the dome switch of the mobile phone is formed integrally by injecting a soft synthetic resin material such as silicon, which is transferred to the buttonhole only ( It goes through S2). At this time, the pressure pad is formed integrally with the inner surface of the button hole when the soft synthetic resin material is injected by the double injection method.

In the above, the surface of the pressing pad 30 is formed in a shape protruding from the surface of the pad 10 as shown in Figure 3, it is possible to press the selected button more easily when the user wants to press the selected button It is desirable to.

As such, when the pressure pad is integrally molded to the pad, the button sheet for attaching the button sheet 40 marked with a required symbol, figure, letter or number, which is separately produced as shown in FIG. 2C, is formed on the upper surface of the pressure pad 30. It is shown to include an attachment step (S3).

In the above, the symbols, figures, letters or numbers written on the button sheet can be variously formed by conventional methods, ie, silk printing, screen printing or laser processing, as well as various color coating or silver coating. Of course, the final surface is preferably coated with a transparent paint and UV coating.

As the key frame keypad used in the mobile phone is manufactured according to the present invention as described above, first, by pressing the molded pad by a known double injection method only to the buttonhole corresponding to the buttonhole in each buttonhole formed in the pad. In other words, they have a condition that can significantly reduce costs.

And above all, by separately manufacturing and attaching the button sheet attached to each of the pressure pads, according to the user's taste, a variety of manufacturing conditions to meet the user's conditions having a variety of tastes by attaching with a pressure pad It can also have.

On the other hand, the function key button hole 22 can be selected by the user in the center according to the trend that the various functions are required, such as mobile phone storage, recording, recording, text messaging or the Internet, such as a function can be selected It is preferably composed of a plurality of directional key holes 22a, and a plurality of function key holes 22b such as a menu, a call, and an end located outside the directional key holes.

In addition, the button sheet 40 attached to the upper surface of the directional key hole 22a pressing pad 30 has a plurality of unidirectional or central parts divided to form a central part or a central part that can integrally cover the entire directional key holes. It may be formed into a dog divided form.

In addition, the surface of the pressure pad 30 is the same surface as the surface of the pad 10 according to the specifications of the mobile phone in various forms, that is, the height of the keypad and the dome switch mounted on the main body case of the mobile phone, as shown in FIG. 4A. It is preferable to mold in the shape of the mold, or as shown in FIG. 4B, the surface of the pressure pad 10 is molded into the shape of the pad.

In addition, by forming a plurality of setting holes 50 protruding from the outer end so that the pad 10 is assembled in the main body case of the mobile phone at the time of molding the pad 10, the present invention in the main body frame of the mobile phone When assembling the key frame keypad manufactured by the assembling to the correct position by the setting hole will have a condition that can minimize the assembly failure.

As described above, the present invention, when manufacturing a key frame keypad for use in a mobile phone by forming a pressing pad to correspond to the button hole in each button hole of the pad, by attaching a button sheet separately manufactured on the upper surface of the pressing pad In addition, the manufacturing cost due to the pressing pad formed only in the buttonhole can be remarkably reduced, and the button sheet of the key frame keypad can be provided in various colors or shapes according to the user's taste. will be.

In addition, according to the specifications of the mobile phone, the height of the pressure pad formed in each buttonhole of the pad can be easily formed irrespective of the mobile phone specifications by forming the same surface of the pad, and protruding and incorporating the pad. .

In addition, by setting the hole formed in the outer edge of the pad to be mounted and fixed to the correct position when assembling the body case of the mobile phone, there is also an effect that can minimize the failure rate due to the assembly.

Claims (10)

In the key frame keypad used in the mobile phone, It is formed of a hard synthetic resin material so as to form a plurality of function key buttonholes 22 penetrating up and down and a plurality of buttonholes 20 formed on the other side and a plurality of number / letter key buttonholes 24 on the other side. A pad 10; Each of the button pads is formed with the respective pressure pads 30 integrally formed with the inner surface of the button hole by a double injection method so that a soft synthetic resin material is injected to correspond to the button holes to form a pressing protrusion 32 on the bottom thereof. ; Key button keypad, characterized in that each button sheet (40) is displayed on the upper surface of the subscription pad, the symbols, figures, letters or numbers required. delete The key frame according to claim 1, wherein the function key button hole (22) is formed of a plurality of direction key holes (22a) in the center and a plurality of function key holes (22b) located outside the direction key holes. Keypad. 4. The button sheet 40 attached to the upper surface of the pressure pad 30 of the directional key hole 22a forms an integral type or the directional key hole attached to each of the pressure pads forming the directional key hole. Key frame keypad, characterized in that formed in a divided form attached to each pressing pad only. The key frame keypad according to claim 1 or 3, wherein the surface of the pressure pad (30) is shaped into a shape protruding from the surface of the pad (10). 4. A key frame keypad according to claim 1 or 3, wherein the surface of the pressure pad (30) is shaped to be flush with the surface of the pad (10). delete delete In the method for manufacturing a key frame keypad for use in a mobile phone, A pad molding step (S1) of molding a pad by injecting a hard synthetic resin material to form a plurality of button holes between upper and lower molds; A pressure pad molding step (S2) of injecting a soft synthetic resin material into the button hole of the molded pad to form a pressure pad having a pressure protrusion formed on a bottom surface thereof; And a button sheet attaching step (S3) for attaching a button sheet marked with symbols or figures and letters or numbers, which are separately manufactured on the upper surface of the pressure pad. 10. The method of claim 9, further comprising integrally forming a plurality of setting holes protruding from an outer end at an edge of the pad during the pad forming step.

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