KR20060017025A - A keyboard pad and the manufacturing method therefor - Google Patents

Abstract

The present invention relates to a keyboard pad and a method of manufacturing the same.

The keyboard pad, in the keyboard pad 20 including the upper pad 21, the lower pad 23, and the flexible circuit board 22, has a first color attached on the surface of the upper pad 21; The overall keyboard arrangement is constituted by the member A and the second color member B,

In the method of manufacturing a keyboard pad having such a structure, in the step of manufacturing the upper pad, the pad original plate obtained by the blending of the silicone rubber material and the pigment is pressed to separately form the whole tone keyboard and the semitone keyboard portion on the surface thereof, And attaching the first color member and the second color member to these whole tone keyboard portions and the semitone keyboard corresponding portions, respectively.

It is possible to obtain a key pad and a method for producing the same, which not only maintains an excellent function and a beautiful appearance as a key pad of the silicone rubber, but also greatly improves workability in the manufacturing process.

Portable keyboard instrument, keyboard pad.

Description

Keyboard pad and the manufacturing method therefor {A keyboard pad and the manufacturing method therefor}

1 is a perspective view showing a typical portable keyboard musical instrument,

2 is a perspective view showing a keyboard pad constituting the keyboard musical instrument;

3 is a perspective view showing a keyboard pad of an embodiment of the present invention;

4 is a work flow chart showing a method for manufacturing an upper pad constituting a keyboard pad according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

                     10, 20: keyboard pad 11, 21: upper pad

                     12, 22: flexible circuit board 12, 22: lower pad

                            A: first color member B: second color member

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key pad and a method for manufacturing the same, and specifically, a key pad and a method for manufacturing the same, which maintain excellent performance and beautiful appearance as a key pad possessed by silicone rubber, as well as greatly improve workability in a manufacturing process. The invention relates to.

In more detail, it can also be called invention regarding the upper pad which comprises the surface of the said keyboard pad, and its manufacturing method.

Due to the development of the electronic industry, various electronic organs have been developed in the sense of supplementing or eliminating the shortcomings of the piano or organ, which has been representative of heavyweight instruments in the past.

In the field of pure music, the old heavy wooden piano or organ is still recognized for its value, but in the area that emphasizes other hobbies and commercials, the electronic organs have a great advantage of being portable because of their small size and light weight. It has secured an overwhelming advantage.

On the other hand, the human desire for miniaturization and lightening has repeatedly improved or modified electronic organs, and in recent years has come to produce keyboard instruments in the form of scrolls.

The scroll-type portable keyboard musical instrument (hereinafter referred to as a "portable keyboard musical instrument") includes a main body portion including a memory chip to which electronic sounds of various musical instruments including a piano are input, and connected to the main body portion thereof. It is configured to include a flexible keyboard pad engraved with a key on the surface.

In other words, the sound of the scale is ringed from the speaker in the main body part as the key is pressed on the surface of the keyboard pad, and the performance is performed. After the performance is finished, the keyboard is rolled up like a roll. There are possible features.

FIG. 1 is a perspective view showing a general shape of the portable keyboard musical instrument. As mentioned above, a keyboard pad 10 engraved with a conventional piano keyboard, a circuit board (not shown) and an electrical circuit in the keyboard pad 10 are provided. It includes a main body portion (x) having an electronic device connected therein.

As shown in FIG. 2, the keyboard pad 10 includes an upper pad 11 having respective keys engraved thereon, and a lower pad 13 bonded to each other with a slight space between the upper pad 11 and the upper pad 11. ) And the flexible circuit board 12 accommodated in the space between the upper and lower pads 11 and 13.

On the other hand, the keyboard pad 10 should have enough flexibility to be easily wound, for this purpose it is usually made of silicon rubber (silicon rubber).

Other synthetic resins such as urethane may be considered, but silicone rubber is recognized as an optimal material in terms of its main function as a key including restoration characteristics.

However, there has been a problem to be fundamentally solved when manufacturing the keyboard pad 10 using the silicone rubber as a material.

That is, as a method problem for distinguishing and displaying the on-tone keyboard (a) and the semi-tone keyboard (b) on the upper pad 11 constituting the surface of the keyboard pad 10, a warm tone keyboard (a) which is usually white and The conventional method for classifying black semitone keys b separately is as follows.

First, by mixing a milky white silicone rubber material and an appropriate amount of pigment in a roller mixer, a pad negative disc of a warm tone key index white is produced, and a white primary key pad is produced by pressing it. A separate piece of black sheet is placed on the corresponding area of the semitone keyboard, and then placed in a separate, hot mold to heat-bond between the primary keyboard pad and the black sheet, ie, fusion of two silicone rubber sheets, An example is the case of completing a single keyboard pad in which a whole tone key and a black empty key are combined.

In order to obtain the pieces of the black plate for the semitone keyboard, it is a matter of course that a separate pigment blending process similar to the process of producing the white pad disc should be involved.

As another method, a method of painting with black ink, paint, or the like on the corresponding portion of the semitone keyboard on the pad disc obtained through the compounding process with the white pigment is mentioned.

According to the fusion method as a first example, there is a problem that the boundary between colors is considerably blurred as mutual mixing occurs while the two-color silicone rubber sheet is welded.

In addition to the boundaries between the colors, the phenomenon that the original vivid color itself due to the mixing is also unavoidable.

According to the painting method as the second example, there is a problem of producing a rough feeling as a color tone mismatch occurs between a white key as a silicone rubber portion and a black key as an ink or paint painted portion.

The present applicant has filed a patent application No. 10-2004-0047468 dated June 24, 2004 in order to solve such a conventional problem, according to the patent application, through the silicon ink printing by the screen printing method It is characterized by forming the whole tone keyboard (a) and the semitone keyboard (b).

However, while the pad for a keyboard according to the patent application looks beautiful with its beautiful appearance, while taking into consideration working conditions such as the printing process being performed at a relatively high temperature, some workability or productivity is inevitably lowered. I had room.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and provides a key pad and a method of manufacturing the same, which not only maintain the excellent function and beautiful appearance of the key pad of the silicone rubber, but also greatly improve workability in the manufacturing process. There is an object of the present invention.

The keyboard pad of the present invention for achieving the above object, in the keyboard pad including the upper pad, the lower pad and the flexible circuit board of the structure as described above, the warm sound on the surface of the upper pad constituting the keyboard pad Keyboard and semitone keyboard There is a feature that the entire keyboard arrangement is constituted by the first color member and the second color member respectively attached to the corresponding portions.

That is, compared with the invention related to the patent application of No. 10-2004-, each of the whole tone keyboard and the semitone keyboard constituting the keyboard pad of the present invention is formed by attachment of a separate member different from the pad disc.

In the present specification, the first color member represents the whole tone keyboard, and the second color member represents the semitone keyboard, respectively, and the respective colors are not particularly limited to white or black.

Further, the method for manufacturing a keyboard pad according to the present invention comprising the upper pad having an overall keyboard arrangement composed of a first color member and a second color member on its surface comprises the steps of: By pressing the pad disc obtained by the mixing of the rubber material and the pigment, the diatonic and semitone keyboard portions are separately formed on the surface thereof, and then separate parts of the first color and the semitone keyboard corresponding parts of the first and second colors are formed. There is a feature comprising the step of attaching.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A key pad according to an embodiment of the present invention and a manufacturing method thereof will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a keyboard pad according to the present invention, which is similar in appearance to the conventional keyboard pad of FIG. 2 in that it has a recording arrangement composed of a whole tone keyboard and a semitone keyboard.

However, in the present invention, since the whole tone keyboard and the semitone keyboard are characterized by being formed as separate members of two colors, the above point is referred to the perspective view of FIG. 2 with reference to the first color member A and Each keyboard part is shown in the form of the second color member B. FIG.

That is, according to the present invention, the upper pad 21 having each key engraved thereon, the lower pad 23 bonded to each other with a little space between the upper pad 21, and these upper and lower pads In the keyboard pad 20 including the flexible circuit board 23 accommodated in the space between the (21, 23), the first pad attached to the corresponding portion of the hot sound key and semitone key on the surface of the upper pad 21 The overall keyboard arrangement is constituted by the color member A and the second color member B. FIG.

As a material of the first color member A and the second color member B attached on the upper pad surface, which is a silicone rubber material, the material of the upper pad 21, that is, the fiber material as long as adhesion with the silicone rubber is possible. , Vinyl or other synthetic resins.

The material of the first color member A and the second color member B is not particularly limited because each material having a different material feel such as fiber or vinyl can be selected and used as necessary.

As described above, the key pad 20 according to the present invention is made of a fiber or vinyl material as other functional material such as a fibrous material or a vinyl material on the corresponding portion of the hot sound key and the semitone key on the surface of the upper pad 21 as the silicone rubber material constituting the key pad. By attaching the first color member A and the second color member B to form an overall keyboard arrangement, sufficient flexibility as a key pad of the silicone rubber is maintained, as well as a material of the separate member such as the fiber material. There is a characteristic that shows the maximum characteristic, ie texture or aesthetic effect to the maximum.

Although it is preferable to make the said 1st color member and the 2nd color member white and black, as it is the same as the keyboard arrangement structure on a general keyboard musical instrument, it is good also as other colors as needed.

Subsequently, the method for manufacturing a keyboard pad according to the embodiment of the present invention will be described with reference to the process diagram of FIG. 4, the steps of manufacturing the upper pad, the lower pad, and the flexible circuit board, respectively, and placing the flexible circuit board in the space between the upper pad and the lower pad. In the key pad manufacturing method comprising the step of joining these upper pads and lower pads in a immersed state, the upper pad manufacturing step is a step of obtaining a pad disc by blending a silicone rubber material and pigment, and the pad Separately forming a plurality of diatonic and semitone keyboard portions on the surface by pressing the disc, attaching a first color member to any one of the diatonic keyboard portion and the semitone keyboard portion, and remaining one keyboard portion. Attaching the second color member to the device.

The attachment method may be mechanical work or manual work, and the adhesive may be any ordinary one used for the attachment work of the same nature.

As such, it is irrelevant to the fusion method or the painting method as mentioned above, and also does not adopt the printing method described in the specification of No. 10-patent application, so that the excellent function and the beautiful function as the keyboard pad of the silicone rubber By maintaining the appearance as well as eliminating the printing and drying processes under high temperature, it is possible to considerably improve workability in the manufacturing process.

On the other hand, the present invention is not only put the point in the manufacturing process of the upper pad in the manufacture of the keyboard pad for portable keyboard instruments, but also the manufacturing process of the lower pad and the flexible circuit board is the same as the conventional, Detailed description will be omitted.

In the above, the keyboard pad and the manufacturing method of the present invention have been described in detail based on the illustrated embodiment. However, separate members of different colors, that is, fiber materials or synthetic resin materials, etc. are formed on the upper pad surface of the keyboard pad. It will be appreciated that even minor changes or modifications, which are intended to constitute the overall keyboard arrangement by attaching a functional member, also fall within the technical scope of the present invention.

As described above, according to the present invention, it is possible to obtain a key pad and a method of manufacturing the same, which maintains excellent functions and beautiful appearance as a key pad, such as excellent flexibility of silicone rubber, and greatly improves workability in the manufacturing process.

In addition to improving the workability, by selecting and attaching members of various colors other than white or black to the hot and semitone keys on the upper pad surface constituting the keyboard pad, the aesthetic value of the portable keyboard musical instrument is further enhanced. The effect of amplification can also be obtained.

Claims (2)

Between the upper pad 21 in which each key is engraved, the lower pad 23 bonded to each other with a little space between the upper pad 21, and between these upper and lower pads 21 and 23. In the keyboard pad 20 comprising a flexible circuit board 22 accommodated, Key pad (20) characterized in that the overall keyboard arrangement is configured by the first color member (A) and the second color member (B) attached on the surface of the upper pad (21). Manufacturing the upper pad 21, the lower pad 23, and the flexible circuit board 23, respectively, and inserting the flexible circuit board 22 into the space between the upper pad 21 and the lower pad 23. In the key pad manufacturing method comprising the step of bonding these upper pads 21 and lower pads 23, The step of preparing the upper pad 21 includes the steps of obtaining a pad disc by blending a silicone rubber material and a pigment, and separately forming a plurality of warm sound keys and semicircle key portions on the surface by pressing the pad disc. And attaching the first color member to any one of the whole tone keyboard portion and the semitone keyboard portion, and attaching the second color member to the remaining one keyboard portion.

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