JP2005195797A - Keyboard structure and key structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure fixation strength by enabling the fixation state of a key base body and a woody part to visually be confirmed. <P>SOLUTION: A key structure K1 comprises an upper plate body 10 made of light-transmissive synthetic resin, a key base body 20 made of transparent synthetic resin, and the woody part 30 made of a woody material. A lower surface 30a of the woody part 30 is bonded to an upper surface 22a of an extending part 22 of the key base body 20 with an adhesive, and the bonding state can be visually confirmed since the key base body 20 is made of a transparent member. The extending part 22 is also provided with a through hole 22b for adhesive injection. A bag-shaped part 24 including a lens part 24a is formed integrally on the front of the key base body 20 and a light irradiation part 40 is arranged below the bag-shaped part 24. A through hole 30a formed in the front of the woody part 30 guides the irradiation light from the light irradiation part 40 toward the upper plate body 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a keyboard structure and a key structure in which a key is formed by fixing a wood part to a holding member by bonding or the like.

Conventionally, as in Patent Documents 1 and 2 below, a keyboard structure is known in which a wood part such as wood is used as a part of a key structure that functions as a key that is rotated by a key pressing operation. In such a wood-based key structure in the keyboard structure, at least a so-called “visible part” that is visually recognized during performance and non-performance is provided with a wooden part, so that a wooden texture is imparted, A feeling is obtained. In these key structures, the wood portion is fixed and held with an adhesive or the like on the lower surface of the upper plate body made of synthetic resin including the performance operation surface and the upper surface of the key base body made of synthetic resin, for example. The upper plate body and the key base body are long corresponding to the key shape, and the key structure is constituted by the holding member and the wood part.
JP 2003-271127 A JP 2003-271128 A

  However, if the upper surface of the key base body and the lower surface of the wooden part are fixed with, for example, an adhesive, the adhesive distribution between the key base body and the wooden part cannot be confirmed directly after bonding, so the bonding state is appropriate. It is difficult to confirm without destructive inspection, and when many products are shipped, there is a problem that it is not easy to guarantee the adhesive strength for all products.

  In addition, the holding member such as the key base body is usually formed by injection molding using a mold apparatus. However, in the case of an injection-molded product, generally, a mark of an ejection pin for releasing from the movable side mold plate remains on one side. . Therefore, when the wood part is bonded to the surface of the holding member on which the trace of the protruding pin remains, there is a problem that the formation condition of the adhesive layer varies and the adhesive strength may decrease.

  The present invention has been made to solve the above-described problems of the prior art, and a first object thereof is a keyboard capable of visually confirming the fixing state of the key base body and the wood part and ensuring the fixing strength. To provide a structure.

  A second object of the present invention is to provide a key structure capable of preventing the sticking pin mark of the mold from remaining on the adhesion surface of the holding member to the wood part and ensuring the adhesive strength between the holding member and the wood part. Is to provide.

In order to achieve the first object, the keyboard structure according to claim 1 of the present invention is a key that functions as a key when the player side end portion is turned up and down by a key pressing operation when attached to a keyboard device. A keyboard structure having a structure (K1), wherein the key structure includes a long key base body (20), a wood part (30) fixed to an upper surface (22a) of the key base body, and a light The key base body is formed of a transparent member and has a performance operation surface (10a) and is fixed to the upper part of the wood part, and the key base body is integrally formed of a transparent member. The key base body and the wooden part can be visually confirmed from the back side of the body through the key base body.

According to this configuration, since the key base body is formed of the transparent member, it is possible to visually confirm the fixed state with the wood portion after fixing. Also, when providing an optical keyboard function, it is usually necessary to configure the light irradiated from below the key to pass through the key. However, since the key base body is made of a transparent member, a through hole is provided in the wood part. The optical keyboard function can be easily realized without complicating the configuration of the key base body.

  In the configuration of claim 1, preferably, the wood portion is fixed to the upper surface of the key base body with an adhesive, and penetrates in the vertical direction at the bonding portion of the key base body with the wood portion, and the adhesion is performed. A through hole (22b) for injecting the agent is formed (claim 2). More preferably, a light irradiation part (40) is disposed in the vicinity of the lower surface (20a) of the key base body of the key structure, and the wood part penetrates substantially vertically and irradiates from the light irradiation part. A through hole (30b) is formed for conducting light to be conducted in the direction of the upper plate. More preferably, the light irradiation part vicinity part (24a) of the said key base body has a lens function (Claim 3).

  In order to achieve the second object, a key structure according to claim 4 of the present invention is a synthetic resin long holding member (20) injection-molded by a mold apparatus, and a predetermined surface of the holding member. (22a) is a key structure that is composed of a wood part (30) that is bonded and fixed to the keyboard device. The holding member is formed by molding the predetermined surface side portion of the holding member with the fixed-side mold plate (M1) of the mold apparatus during injection molding, and the movable-side mold plate of the mold apparatus ( The part opposite to the predetermined surface of the holding member is molded in M2).

  According to this configuration, the trace of the protruding pin for releasing the holding member that has become a molded product remains only on the opposite side of the predetermined surface of the holding member, and does not remain on the predetermined surface that is the adhesive surface.

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to the keyboard structure of the first aspect of the present invention, it is possible to visually confirm the fixed state of the key base body and the wood part, and to ensure the fixing strength. Further, it is easy to realize the optical keyboard function without complicating the configuration of the key base body.

  According to the key structure according to the fourth aspect of the present invention, it is possible to prevent the sticking pin mark of the mold from remaining on the adhesion surface of the holding member to the wooden portion, and to guarantee the adhesive strength between the holding member and the wooden portion. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  Fig.1 (a) is a side view which shows a part of cross section of the keyboard structure containing the key structure which concerns on one embodiment of this invention. FIG. 4B is a bottom view of the key structure.

  In the present embodiment, as an example, a configuration in which the key structure K1 is applied to a C key (white key for pitch C) is shown. The key structure K1 may be applied not only to other white keys but also to black keys. Hereinafter, the player side of the key structure K1 is referred to as the front. The key structure K1 includes an upper plate body 10, a key base body 20, and a wood part 30.

  The key base body 20 is configured by integrally forming a base end portion 21 and an extending portion 22 extending forward (from the player direction) from the base end portion 21. The key base body 20 is made of a transparent synthetic resin and is manufactured by injection molding using a mold apparatus. A turning fulcrum 23 is integrally formed in a recess 21 a that opens below the base end 21. When the key structure K <b> 1 is attached to a keyboard device (not shown), the tip end portion thereof is rotatable in the vertical direction around the rotation fulcrum 23. A bag-like portion 24 bulging upward is integrally formed at the front portion of the extended portion 22, and the light irradiation portion 40 is near the lower surface 20 a of the key base body 20 and below the bag-like portion 24. Has been placed. These will be described later.

  The wood portion 30 is made of a wood-based material, has substantially the same length as the extended portion 22 of the key base body 20, and its lower surface 30a is bonded to the upper surface 22a of the extended portion 22 with an adhesive (not shown). Thus, the key base body 20 is fixed. A cylindrical through hole 30b in which the bag-like part 24 is accommodated is formed in the front part of the wood part 30. The through hole 30b conducts light emitted from the light irradiation unit 40 toward the upper plate 10. Since the through hole 30b relates to a function for guiding the key pressing operation with light, various modifications such as making the shape of the cross section ellipse long in the longitudinal direction of the wood part 30 are possible.

  The upper plate 10 has a performance operation surface 10 a and has almost the same length as the wood part 30. The upper plate 10 is bonded and fixed to the upper surface 30 c of the wood part 30. The entire upper plate 10 is made of a white synthetic resin that transmits light. During light emission of the light irradiation unit 40, which will be described later, the light of the light irradiation unit 40 is gently passed through and the player can visually recognize the light. However, when the light irradiation unit 40 is not emitting light, the lower part of the upper plate 10 (light irradiation unit) 40 etc.) is not visible and is recognized in the same way as a normal white key.

  The wood part 30 plays a role of imparting a wood texture to the key structure K1. That is, when the adjacent key is pressed, a part of the side surface of the key structure K1 is visible to the player, but the wooden part 30 is arranged so as to be visually recognized as a part of the side surface. It looks as if the structure K1 is made of wood except for the upper surface and the front surface. Thereby, a wood texture is given to the key structure K1, and a high-class feeling is given.

  The extending portion 22 of the key base body 20 is provided with a plurality of through holes 22b in the vertical direction. In particular, the through hole 22b is disposed near the center of the bonding portion between the upper surface 22a of the extending portion 22 and the lower surface 30a of the wooden portion 30, and is used to inject the adhesive (not shown) when bonding the two. . For example, in the case of using a low-viscosity adhesive, if the adhesive is poured from the outer edge side of the wooden part 30, the adhesive may flow out to the side surface of the wooden part 30, and the appearance may be damaged. If it inject | pours from 22b, an adhesive agent can osmose | permeate a required area | region by capillary action. Alternatively, when the adhesive is only applied after the adhesive is applied, the adhesive tends to concentrate on a specific part such as the vicinity of the outer edge of the wood portion 30 and the adhesive state is not good. Helps to effectively refill the central area of the adhesive.

  Furthermore, since the key base body 20 is made of a transparent member, it is possible to visually confirm the bonding state of the bonded portion between the upper surface 22a of the extending portion 22 and the lower surface 30a of the wooden portion 30 from below after bonding. It is. Note that the key base body 20 may be semi-transparent instead of completely transparent as long as the visual confirmation of the adhesion state is possible, and only the portion corresponding to the adhesion portion is transparent or semi-transparent. It may be transparent.

  The light irradiation unit 40 is configured by holding an LED 41 on an LED holder 42 fixed on a base 43. The LED 41 emits light based on performance data or the like, and the light is used for a key pressing operation guide or the like. On the other hand, the bag-like part 24 has a lens part 24a which is a concave lens in the upper part. The LED 41 enters the inside (downward) when the bag-like portion 24 is regarded as a bag, and is close to the lens portion 24a. Since the key base body 20 is composed of a transparent member, the lens portion 24a is also transparent, and the lens portion 24a functions as a light transmission portion that transmits light of the LED 41 upward. In addition, since the lens portion 24a is a concave lens, the light diffuser function of appropriately diffusing the light of the LED 41 is achieved. The configuration of the lens portion 24a may be modified depending on the arrangement of the LEDs 41 and the usage mode of the light emission of the LEDs 41. For example, a light collecting lens may be used to efficiently guide the light to the upper plate 10. .

  FIG. 2 is a schematic view corresponding to a side view of the key base body 20 that is injection-molded by the mold apparatus. This mold apparatus is a general one, and a fixed mold plate M1 and a movable mold plate M2 are arranged to face each other. The slide core is not shown. The key base body 20 is mainly formed by the fixed side mold plate M1 and the movable side mold plate M2, and the upper surface 22a side portion of the extended portion 22 of the key base body 20, that is, the upper half portion of the key base body 20 is fixed. While being molded with the side mold plate M1, the lower surface 20a side portion of the key base body 20, that is, the lower half of the key base body 20 is molded with the movable side mold plate M2.

  Immediately after forming the key base body 20, a plurality of protruding pins 1 protrude from the movable mold plate M2 side in order to release the key base body 20. Since the protruding pin 1 pushes the lower surface 20a of the key base body 20, the mark of the protruding pin 1 remains only on the lower surface 20a and does not remain on the upper half. In particular, since the mark of the protruding pin 1 does not remain on the upper surface 22a of the extending portion 22 that is the bonding surface with the wooden portion 30, the bonding surface becomes flat, and a decrease in the bonding strength with the wooden portion 30 is avoided.

  According to the present embodiment, since the key base body 20 is made of a transparent member, the bonding state of the bonding surface with the wood portion 30 can be visually confirmed after bonding, and the bonding strength can be guaranteed. . In addition, since the key base body 20 is integrally formed of a transparent member, the lens portion 24a that transmits the light of the LED 41 can be easily configured. Therefore, the configuration of the key base body 20 is improved in providing the optical keyboard function. There is no unnecessarily complicated. That is, the fact that the key base body 20 is transparent is not only useful for guaranteeing the adhesive strength, but also when providing the optical keyboard function, in order to make the light emitted from below visible, Since it can be easily handled by slightly changing the configuration of the upper plate 10, it is easy to realize the optical keyboard function without complicating the configuration of the key base 20. In this respect, it can be said that the advantage of applying the transparent key base body 20 to the key structure used in the keyboard device is great.

  Further, since the through hole 22b for injecting the adhesive is provided in the extending portion 22 of the key base body 20, it is easy to uniformly distribute the adhesive to a necessary region, which contributes to guarantee of the adhesive strength. .

  Furthermore, in the injection molding of the key base body 20 by the mold apparatus, the upper half of the key base body 20 that is the bonding surface side with the wood part 30 is molded by the fixed-side mold plate M1, so that the upper surface of the extending part 22 It is possible to prevent the marks of the protruding pins 1 from remaining on the 22a, and to guarantee the adhesive strength between the key base body 20 and the wood portion 30.

  From the viewpoint of preventing the marks of the protruding pins 1 from remaining and increasing the adhesive strength, even in the injection molding of the upper plate 10, the lower half of the upper plate 10, that is, the bonding surface with the wood portion 30 It is desirable that the side portion is formed with the fixed side mold plate M1 and the lower half is formed with the movable side plate plate M2.

  Instead of the LED 41 to the LED holder 42, a key guide for guiding the vertical movement of the key structure K1 may be provided. In this case, since the bag-like portion 24 divides the region of the lower surface 20a of the key base body 20 and the region on the wooden part 30 side, for example, the lubricating grease applied to the key guide penetrates into the wooden part 30. And a smooth guide function is maintained for a long time.

It is the side view (figure (a)) which shows a part in section of the keyboard structure containing the key structure concerning one embodiment of the present invention, and the bottom view (figure (b)) of the key structure . It is a schematic diagram corresponding to the side view of the key base body injection-molded by the mold apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Upper plate body, 10a Performance operation surface, 20 Key base body (holding member), 20a Lower surface, 22 Extension part, 22a Upper surface (predetermined surface), 22b Through-hole, 24 Bag-shaped part, 24a Lens part (Light irradiation part) Near part), 30 wood part, 30a bottom surface, 30b through hole, 40 light irradiation part, 41 LED, K1 key structure, M1 fixed side template, M2 movable side template

Claims (5)

When attached to the keyboard device, the player side end is turned up and down by a key pressing operation, and has a keyboard structure that functions as a key,
The key structure includes a long key base body, a wood part fixed to the top surface of the key base body, and a top plate which is composed of a light transmissive member and has a performance operation surface and is fixed to the top of the wood part. Composed of body and
The key base body is integrally formed of a transparent member, and is configured so that a fixed state of the key base body and the wood portion can be visually recognized through the key base body from the back surface direction of the key structure. Keyboard structure.   The wood part is fixed to the upper surface of the key base body with an adhesive, and a through hole for injecting the adhesive is formed through the key base body in an adhesive portion with the wood part. The keyboard structure according to claim 1, wherein:   A light irradiating unit is disposed in the vicinity of the lower surface of the key base body of the key structure, and light emitted from the light irradiating unit penetrating the wood part substantially vertically is directed to the upper plate body. The keyboard structure according to claim 1, wherein a through hole is formed for electrical conduction to the keyboard.   The keyboard structure according to claim 3, wherein a portion near the light irradiating portion of the key base body has a lens function. A long holding member made of synthetic resin that is injection-molded by a mold device, and a wood part that is bonded and fixed to a predetermined surface of the holding member. A key structure whose end is pivoted up and down and functions as a key,
In the injection molding, the holding member is formed by molding the predetermined surface side portion of the holding member with the fixed side mold plate of the mold apparatus, and the movable side mold plate of the mold apparatus A key structure in which a portion opposite to a predetermined surface is molded.

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