WO2006059820A1

WO2006059820A1 - Keyboard pad

Info

Publication number: WO2006059820A1
Application number: PCT/KR2005/000995
Authority: WO
Inventors: Jung-O Koo
Original assignee: Jung-O Koo
Priority date: 2004-12-01
Filing date: 2005-04-07
Publication date: 2006-06-08
Also published as: KR100740507B1; KR20060061133A; JP2008501983A

Abstract

The present invention relates to a keyboard pad; and, more particularly, to a keyboard pad capable of making a play sense felt by hands of a player during a playing similar to a sense of pushing a practical piano keyboard and keeping a bonding capability between a top pad and a bottom pad stable, in a roll type keyboard pad manufactured in a form of a sheet. The keyboard pad of the present invention can make the play sense felt by the hands during the playing of the roll type piano keyboard pad similar to the sense of pushing the practical piano keyboard by forming the keyboard contact protrusion on the inside of the keyboard and forming the sloped portion on edge portion of the keyboard; can form the keyboard pad with more volume by shortening the time for pushing the flexible film due to the keyboard contact protrusion; can overcome the problem that the bonding capability of the silicon rubber becomes weak due to the operations of rolling and unrolling for a long time with making the bonding state of the top pad and the bottom pad more stable by forming the escape prevention unevenness portion on the space between the edge portion of the keypad and the keyboard; and can have an effect that the beauty is assigned to the edge portion of the keyboard pad.

Description

Description KEYBOARD PAD

Technical Field

[1] The present invention relates to a keyboard pad; and, more particularly, to a keyboard pad capable of making a play sense felt by hands of a player during a playing similar to a sense of pushing a practical piano keyboard and keeping a bonding capability between a top pad and a bottom pad stable, in a roll type keyboard pad manufactured in a form of a sheet.

[2]

Background Art

[3] Generally, a roll type keyboard pad is formed thin and light to realize a light weight and a miniaturization. So called that such a conventional keyboard pad is mainly manufactured with a silicon material, after a top pad and a bottom bad are respectively formed with dividing into each other, a flexible film is received between the top pad and the bottom pad and it is manufactured by inter-connecting each other. A prior art related to the roll type keyboard pad is as follows.

[4] At first, Fig. 1 to Fig. 4 show a keyboard pad that can be seen in a patent application filed in the Korean Industrial Property Office and assigned 10-2003-0008281 and a divisional application thereof which is assigned 10-2004-0047468 filed by the present applicant.

[5] Fig. 1 is an example of a roll type piano mounting a keyboard pad. As shown in Fig.

1, a keyboard 1000 is mounted on a controller 2000. The keyboard pad 1000 includes a top pad 100 provided with a first keyboard 110 playing a role of a whole tone keyboard and a second key board 120 playing a role of a semitone keyboard, escape prevention jaws 210 to prevent the top pad 100 from deviating by being formed on the bottom pad, a first engaging jaw 130 to make the connection between the top pad 100 and the bottom pad stable and bonding tips 400 and the like. The controller 2000 includes a liquid crystal display (LCD) panel 2100a, an operational key unit 2100, a speaker 2200 and the like.

[6] As Fig. 2 represents the keyboard pad 1000 more detail, a first fitting portion 140 to make the connection with the controller 2000 stable, a pair of ground portions 330 to connect the flexible film received between the top pad 100 and the bottom pad to the controller 2000 and the like can be seen.

[7] As Fig. 3 is a exploded perspective view showing a keyboard pad 100 according to a prior art, the flexible film received between the top pad 100 and the bottom pad can be seen, and a first contact portion to transmit an electrical signal to the controller 2000 by forming the contact points according to the playing of the first keyboard and a second contact portion to transmit the electric signal to the controller 2000 by forming the contact points according to the playing of the second keyboard can be seen. And al so, a bonding capability of the keyboard pad 1000 can be reinforced by forming the second engaging jaw 220 to engage with the first engaging jaw 130 of the top pad 100 by being formed on the bottom pad.

[8] Fig. 4 represents a reverse side of the top pad 100 among things exploded and shown in Fig. 3 to show an inside surface of the top pad 100. A first recess 110a formed with facing the first keyboard of the top pad 100 and a second recess 120a formed with facing the second keyboard can be seen. Such recesses 110a and 120a are formed together with the contact portions 310 and 320 of the flexible film. By contacting a region protruded between each of the recesses 110a and 120a to a non- contact region between each contact portions 310 and 320 of the flexible film, the contact formations of the adjacent other keyboards due to one keyboard pushed during the playing can be prevented.

[9] However, there can be generated several problems for the technical features of the previously filed application by the present applicant described in above. That is, each of the recesses 110a and 120a formed on the top pad 100 and an empty space formed by a protruded region formed by the recesses 110a and 120a cause a problem that the play sense felt by hands during the playing does not realize the feeling of pushing the practical piano keyboard. And also, as the escape prevention jaws 210 and the second engaging jaw 220 formed on the bottom pad and the first engaging jaw 130 formed on the top pad can be seen as a means to prevent the top and the bottom pads from deviating, it is a structure that can generate a critical damage if the bonding capability of the silicon adhesive becomes weak due to the operations of rolling and unrolling for a long time.

[10] And, as another prior art, a keyboard pad related to a roll type piano can be also seen in Korean Utility application No. 20-2001-0011711, Korean Utility application No. 20-2002-0023572, Korean Utility application No. 20-2004-0017138, Korean Patent application No. 10-2003-0054770 and United State patent 6,259,006, however, they do not suggest a detailed means related to a realization of the feeling of pushing the practical piano keyboard for the playing sense felt by hands during the playing; and do not suggest a detailed means to overcome a problem that the bonding capability of the silicon rubber becomes weak due to the operations of rolling and unrolling for a long time.

[H]

Disclosure of Invention Technical Problem

[12] It is, therefore, an object of the present invention to provide a keyboard pad capable of making a play sense felt by hands during a playing of a roll type piano keyboard similar to a sense pushing a practical piano keyboard and to overcome a problem that the bonding capability of the silicon rubber becomes weak due to the operations of rolling and unrolling for a long time.

[13]

[14] *

Technical Solution

[15] In accordance with an aspect of the present invention, there is provided a keyboard pad including a top pad on which a whole tone keyboard and a semitone keyboard are formed, an escape prevention jaws formed on an inner surface between an edge portion of the top pad and a key board, a keyboard contact protrusion formed on a keyboard inner surface of the top pad, a sloped portion formed on a keyboard outer surface of the top pad and a bottom pad provided with an unevenness portion connected to the escape prevention jaws of the top pad. [16]

Brief Description of the Drawings [17] Fig. 1 is an example of a roll type piano mounting a keyboard pad according to a prior art;

[18] Fig. 2 is a detailed diagram illustrating a keyboard pad according to a prior art;

[19] Fig. 3 is a exploded perspective view showing a keyboard pad according to a prior art; [20] Fig. 4 is a detailed diagram depicting inner surfaces of a top pad of the keyboard pad according to a prior art; [21] Fig. 5 is a partial enlarged view of a keyboard pad in accordance with an embodiment of the present invention; [22] Fig. 6 is a side cross-sectional view of a keyboard pad in accordance with the embodiment of the present invention; [23] Fig. 7 is a front cross-sectional view of a keyboard pad in accordance with the embodiment of the present invention; [24] Fig. 8 is a partial enlarged view depicting a keyboard pad in accordance with another embodiment of the present invention; [25] Fig. 9 is a side cross-sectional view of the keyboard pad in accordance with another embodiment of the present invention; and [26] Fig. 10 is a front cross-sectional view of a keypad in accordance with another embodiment of the present invention. [27]

[28] <Description of Codes for Essential part of Drawing>

[29] 1: the escape prevention unevenness portion 2: the whole tone keyboard

[30] 3: the semitone keyboard 4: the keyboard contact protrusion

[31] 5: a sloped portion 6: the film supporting protrusion

[32] 10: the keyboard pad 11 : a top pad

[33] 12: a bottom pad

Best Mode for Carrying Out the Invention

[34] Hereinafter, detailed features related to the objects, constitutions and effects of the present invention will be more clearly understood by a detailed description with reference to the accompanying drawings showing embodiments of the present invention.

[35] Fig. 5 to Fig. 7 are partial enlarged views of the keyboard pad 10 in accordance with an embodiment of the present invention. A construction to overcome a problem that a bonding capacity of a silicon rubber becomes weak due to operations of rolling and unrolling of the keyboard pad 10 of the present invention for a long time as follows.

[36] In the keyboard pad 10 as can be seen in Fig. 5, a first engaging jaw 130, a second engaging jaw 220 and escape prevention jaws 210, as can be seen in Fig. 1 to Fig. 4, are not formed on an edge portion of the keyboard pad 10.

[37] The first engaging jaw 130 and the second engaging jaw 220 may become thick in their thickness at a slightest slip during operations of rolling an unrolling of the roll type keyboard pad and there is a limitation of beauty that is assigned to an external appearance of end portions of the keyboard pad with various shapes. Although the escape prevention jaws 210 are effective for preventing the top pad 10 from deviating, there is a problem to deteriorate a bonding state of a silicon rubber at a slightest slip during the operations of rolling and unrolling of the pad.

[38] Therefore, the keyboard pad 10 in accordance with an embodiment of the present invention is provided with a structure to achieve both of an escape prevention function of the first engaging jaw 130 and the second engaging jaw 220 in a horizontal direction and an escape prevention function of in a vertical direction as a function of the escape prevention jaws 210, simultaneously. That is, it can be achieved the escape prevention function in the horizontal and the vertical directions simultaneously by forming the escape prevention unevenness portion 1 between the edge and the keyboards 2 and 3 not on the edge portion of the keyboard pad 10. The escape prevention unevenness portion 1 is further described in detail hereinafter.

[39] Dotted lines as can be seen in Fig. 5 represent the escape prevention unevenness portion 1, and the structure of the escape prevention unevenness portion 1 can be explained in detail through Fig. 6 as the cross-sectional view taken along a line A-A' and Fig. 7 as the cross-sectional view taken along a line B-B'. Since the escape prevention unevenness portion 1 formed between the edge and the keyboards 2 and 3 not on the edge portion of the keyboard pad 10 but can be variously set in its shape, and the bonding state of the keyboard pad 10 can be further stable, the structure can assign the beauty to the edge portion of the key pad 10 with various shapes.

[40] A construction to make a play sense felt with hands during playing the roll type piano keyboard pad 10 in accordance with the present invention similar to a sense pushing the practical piano keyboard is as follows.

[41] Fig. 5 represents a partial portion of the keyboard pad 10 in accordance with the present invention, as like that the left partial portion of the keyboard pad 1000 can be seen in Fig. 1 to Fig. 4. And also, Fig. 5 shows the partial portions of the whole tone keyboard 2 and the semitone keyboard 3 to explain the keyboard contact protrusion 4 formed on the keyboard pad 10.

[42] As can be seen from the plan view depicting the semitone keyboard 3 of Fig. 5, the keyboard contact protrusion 4 in the shape of dot can be identified. The keyboard contact protrusion 4 can be more clearly identified in Fig. 6 and Fig. 7, and it is obvious that the keyboard contact protrusion 4 can be formed on the whole tone keyboard 2 as well as on the semitone keyboard 3.

[43] Fig. 8 is another embodiment that the keyboard contact protrusion 4 is set as another form. The keyboard contact protrusion 4 of Fig. 8 can be identified that it is set as a tooth type. As can be seen from Fig. 5 and Fig. 8, the play sense felt by the hands during the playing of the keyboard pad 10 can be made similar to the sense of pushing the practical piano keyboard through the various modifications of the keyboard contact protrusion 4. The Fig. 9 is a cross-sectional diagram taken along a line C-C of Fig. 8, and Fig. 10 is a cross-sectional diagram taken along a line D-D' of Fig. 8.

[44] The keyboard pad 10 in accordance with the present invention makes the sense further similar to the sense of pushing the practical piano keyboard by forming a sloped portion 5 on the keyboards 2 and 3. As can be seen from Fig. 5 to Fig. 10, it takes a shape similar to the practical piano keyboard by forming the sloped portion 5 on the edge portion of each of the keyboards 2 and 3. A round angle of the sloped portion 5 is formed in such a way that it matches to a round angle of the practical piano keyboard as possible.

[45] By receiving the keyboard pad 10 in accordance with the present invention at a top pad 11 and a bottom pad 12, a film supporting protrusion 6 is formed to support the flexible film. As can be seen from Fig. 5 to Fig. 10, the film supporting protrusion 6 can be formed on a predetermined portion of the protrusion portion between the keyboards as many as a predetermined number. The detailed structures of the flexible film, the protrusion portion or the like can be identified in detail through Fig. 1 to Fig. 4 of a prior patent application filed by a commonly owned assignor.

[46] While the present invention has been described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

[47]

Industrial Applicability

[48] The keyboard pad of the present invention can make the play sense felt by the hands during the playing of the roll type piano keyboard pad similar to the sense of pushing the practical piano keyboard by forming the keyboard contact protrusion on the inside of the keyboard and forming the sloped portion on edge portion of the keyboard; can form the keyboard pad with more volume by shortening the time for pushing the flexible film due to the keyboard contact protrusion; can overcome the problem that the bonding capability of the silicon rubber becomes weak due to the operations of rolling and unrolling for a long time with making the bonding state of the top pad and the bottom pad more stable by forming the escape prevention unevenness portion on the space between the edge portion of the keypad and the keyboard; and can have an effect that the beauty is assigned to the edge portion of the keyboard pad.

[49]

Claims

[ 1 ] A keyboard pad, comprising: a top pad on which a whole tone keyboard and a semitone keyboard are formed; an escape prevention jaw formed on an inner surface between an edge portion of the top pad and a key board; a keyboard contact protrusion formed on a keyboard inner surface of the top pad; a sloped portion formed on a keyboard outer surface of the top pad; and a bottom pad provided with an unevenness portion connected to the escape prevention jaws of the top pad. [2] The keyboard pad as recited in claim 1, wherein a flexible film is received between the top pad and the bottom pad so that the flexible film has an electric contact corresponding to each keyboard. [3] The keyboard as recited in claim 2, wherein a film supporting protrusion is formed on the inner surface between the keyboards of the top pad to support the flexible film. [4] The keyboard as recited in claim 1, wherein the keyboard contact protrusion is formed in a shape of a plurality of dots. [5] The keyboard as recited in claim 1, wherein the keyboard contact protrusion is formed in a shape of a plurality of teeth.