JP2003271128A - Key structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily secure a key function with high accuracy by increasing the degree of freedom to the design of the key function part while applying woody feeling to the key. <P>SOLUTION: A key structure 100 is structured by uniting a key base body 40 made of resin and a key body part BOD into a single body, and the key body part BOD consists of an upper plate body 50 made of resin and a woody part 60 made of wood. The woody surface of the woody part 60 is arranged on the side faces 100a and 100b of the key structure 100. An extending part 40b extends forward from the base end part 40a of the key base body 40, and the extending part 40b extends up to the front part 50a of the upper plate body 50 almost parallelly in the longitudinal direction of the key body part BOD. Further, a key guide part 42 to be guided being a 'key function part', a mass body driving part 43, a key actuator 44 and a key-falling off prevention mechanism part 45 are formed integrally with the extending part 40b. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key structure applied to a key having a wood part.

[0002]

2. Description of the Related Art Conventionally, wood is used for a key structure functioning as a key in order to improve texture. As the wooden key structure, for example, a wooden key for an acoustic piano is often used due to its availability.

Generally, in the key structure, in addition to the key fulcrum portion, a driving portion for driving other elements such as a mass body and a key switch, a guided mechanism portion for being guided by a key operation guide, and the like. Is provided.

[0004]

However, in the above-mentioned conventional key structure, since the key fulcrum portion, the various drive portions, and the mechanical portion are also formed by processing the wood portion, the design relating to the function and shape thereof is required. Since the degree of freedom is low and there are many restrictions in terms of processing accuracy, there is a problem that it is not easy to secure a highly accurate key function.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to increase the degree of freedom in designing the key function unit while giving the key a wooden texture, and to provide a highly accurate key. It is to provide a key structure that can easily secure a function.

[0006]

In order to achieve the above object, a key structure according to claim 1 of the present invention is a long key body part at least a part of which is made of wood material, and the key body part of the key body part. A key structure configured to integrally operate with a key function member having a substantially parallel portion along the longitudinal direction, wherein the key body has a wood surface on a side surface in the longitudinal direction. At the same time, at least one key function portion is integrally formed with the key function member.

According to this structure, it is possible to increase the degree of freedom in designing the key function unit and easily secure a high-precision key function, while giving the key a wooden texture.

The key structure according to a second aspect of the present invention is the structure according to the second aspect, wherein the key function portion includes a key fulcrum portion, a guided mechanism portion for being guided by a key operation guide, and a key switch. At least one of a switch drive unit for driving, a mass body drive unit for driving the mass body, and a key detachment prevention mechanism unit for preventing detachment from the keyboard device.

The key structure according to a third aspect of the present invention is characterized in that, in the structure according to the first or second aspect, the key function member is made of either metal or resin. With this configuration, the degree of freedom in design and the accuracy of the key function can be improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a keyboard device including a key structure according to a first embodiment of the present invention.

The key structure 100 functions as a key, and the figure shows a cross section cut between the B key and the C key. Therefore, in the figure, the right side view of the key structure 100, which is the B key, is viewed from the player. The key structure 100 is applied to a white key, but may be applied to a black key. Note that, hereinafter, the player side of the keyboard device and the key structure 100 will be referred to as the front.

The key structure 100 is constructed by integrally combining a key base body 40 (key function member) and a key body portion BOD, and the key body portion BOD is composed of an upper plate body 50 and a wooden portion 60.
It consists of and. The upper plate 50 is formed by integrally forming a front portion 50a and an upper plate portion 50b that provides a key operation surface with resin. The wood part 60 has almost the same length as the upper plate part 50b of the upper plate body 50, and is bonded to the upper plate part 50b and the front part 50a to be bonded to the upper plate body 50, whereby the key body is formed. The part BOD is configured.

The key base body 40 is formed by integrally forming a base end portion 40a and an extension portion 40b extending forward from the base end portion 40a with a resin member, and further extending the extension portion 40b. The keyed guide portion 42 (guided mechanism portion), the mass body drive portion 43, and the key actuator 4 are all key functional portions.
4 (switch drive unit) and the key drop prevention mechanism unit 45 are integrally formed. The extended portion 40b is the key body portion BO.
It extends substantially parallel to the longitudinal direction of D to the front portion 50a of the upper plate body 50. The base end 40a also corresponds to the rear end of the key structure 100. A rotation fulcrum 41 is provided at the rear portion of the base end portion 40a, and the key structure 100 is vertically rotatable about the rotation fulcrum 41. Mass body drive unit 43
A sliding member 46 for ensuring smooth sliding is attached to the lower end of the.

On the other hand, below the key structure 100, a mass body 71 is arranged corresponding to each key structure 100. The driven portion 71a of the mass body 71 is driven by the sliding member 46 via the mass body driving portion 43 of the key base body 40 in response to a key pressing operation. As a result, the mass body 71 is moved to the mass body rotation shaft 7
By rotating around 2, an appropriate key depression feeling is given. In addition, this keyboard device has a two-make type first
A key switch 73 and a second key switch 74 are provided. The first key switch 73 is pressed and driven by the key actuator 44 of the key base body 40 to detect a key operation. The second key switch 74 is pressed and driven by a key actuator 71b provided on the mass body 71 to detect a key operation. Since the two key switches 73 and 74 detect the key operation including the off-touch at different timings, various musical tone controls can be performed based on the detection results.

The keyboard device is also provided with a key operation guide 75 and an engaging portion 77. During key operation, the keyed guide portion 42 of the key structure 100 is guided by the key operation guide 75, whereby the key structure 100 swings in the key arrangement direction (the left and right direction of the key structure 100). Suppressed. The key drop prevention mechanism part 45 engages with the engaging part 77 to prevent the key structure 100 from falling off mainly at the time of key operation.

FIG. 2 is a view showing a cross section of the key structure 100 at each position. 1A to 1F are respectively shown in FIG.
It is sectional drawing which follows the AA line-FF line. Note that FIG.
Exemplifies the B key, the key structure 1 has the escape portion for disposing the adjacent black key (G # key).
00 (b) to (f), the width of 00 is narrower on the left side (side surface 100a side) viewed from the player.

As shown in FIG. 2A, the key structure 100
Is configured such that the wood portion 60 is sandwiched between the upper plate portion 50b of the upper plate body 50 and the key base body 40. At the upper part of the extending portion 40b of the key base body 40, the extending portion 40b
b in the vicinity of the connecting portion between the b and the base end portion 40a
Is formed. In addition, the wooden portion 60 is provided with a groove-shaped recess 60c having a shape fitting to the protrusion 40c.
Then, first, after creating the key body BOD, by fitting the protrusion 40c of the extending portion 40b into the groove-shaped recess 60c of the wooden portion 60, and by adhering the wooden portion 60 and the extending portion 40b, The key structure 100 is configured.

The wood portion 60 plays a role of imparting a wood texture to the key structure 100. That is, when a key is pressed, the player can see a part of the side surface of the key next to the pressed key, but since the wooden parts 60 are arranged on the side surfaces 100a and 100b of the key structure 100, the player can see the wooden part 60. Side 60
The a and 60b are visually recognized, and it looks as if the key structure 100 is made of wood except the upper surface and the front surface. As a result, the key structure 100 is provided with a wood texture and a high-class feeling.

Further, as shown in FIG. 1, the keyboard device is provided with a panel portion 76 above the key structure 100. The panel section 76 includes various operating elements and a display section (not shown), and also plays a role as a blindfold section for blindfolding a rear portion thereof. Here, wood part 6
In No. 0, the key body BOD is extended to the rear of the panel unit 76, so that the player cannot see the boundary between the key body BOD and the base end 40a of the key base body 40. , Improve the appearance.

According to the present embodiment, since the side surfaces 60a and 60b, which are the wood surfaces of the wood portion 60, are arranged on the side surfaces in the longitudinal direction of the key body portion BOD, the wood portion 60 is visually recognized by the player at the time of key operation and the wood texture is obtained. Is given. Further, the long key body portion BOD and the key base body 40 are integrally operable, and the extending portion 40b of the key base body 40 is formed substantially parallel to the longitudinal direction of the key body portion BOD. Furthermore, since the key function part that exhibits the function as a key such as the keyed guide part 42 is integrally formed in the extended part 40b, the wood key is adopted as in the conventional case by using the wood key. Compared with the case of machining, the degree of freedom in designing those functions and shapes is high and the machining accuracy is also excellent, so that it is easy to secure a highly accurate key function. Therefore,
It is possible to increase the degree of freedom in designing the key function unit and easily secure a highly accurate key function while giving the key a wood texture.

Further, since the key base body 40 is made of resin, the degree of freedom in design including the key function portion, durability and wear resistance can be enhanced, and the accuracy of the key function can be improved over a long period of time. Can be maintained. Further, since the wooden part 60 is in the so-called inside-clogged state in the key structure 100, high rigidity is secured.

The structure of the key structure 100 is not limited to the illustrated one.

FIG. 3 is a diagram showing a modification of the key structure. FIGS. 2A to 2D show sectional views corresponding to FIG. 2A of the modified example.

For example, in the example of FIG. 3A, the portions corresponding to the upper plate portion 50 and the key base body 40 are integrally formed of resin. That is, the upper plate portion 10a and the lower plate portion 10
c is connected by a connecting portion 10b, and the cross-sectional shape is such that "H" is laid down. In this example, the wood part is configured to be divided into wood parts 20L and 20R, and the key structure is formed by being arranged on both sides of the connecting part 10b.

Further, in the example of FIG. 3B, the protrusion portion 31a is provided downward from the resin upper plate portion 31, while the connecting portion 32a and the lower plate portion 32b are integrally formed of resin. A groove-like recess 32aa that fits into the protrusion 31a is provided on the upper portion of the connecting portion 32a. Then, the ridge portion 31a of the upper plate portion 31
3 is adhesively fitted to the recess 32aa of the connecting portion 32a, and
By arranging the wood parts 20L and 20R as in the example of (a), a key structure integrally combined is configured.

Further, as shown in FIG. 3 (c), two connecting portions 33b and 33c are used to form an upper plate portion 33a and a lower plate portion 33d.
You may form integrally with resin so that 33e may be connected.
In this case, a recess 35 is formed between the connecting portions 33b and 33c. Then, the wooden parts 34L and 34R, which are thinner than the above-mentioned wooden parts 20L and 20R, are arranged outside the connecting parts 33b and 33c, thereby forming a key structure.

Further, as shown in FIG. 3 (d), a wooden structure 37 is sandwiched between an upper plate part 36 and a lower plate part 38 made of resin from above and below and adhered to each other to form a key structure. May be configured.

(Second Embodiment) FIG. 4 is a side view showing a configuration of a key structure according to a second embodiment of the present invention.

In the first embodiment, the key structure 100
Is composed of a key base body 40 and a key body portion BOD, and the key body portion BOD is composed of an upper plate body 50 and a wood portion 60. Further, the key base body 40 is provided with an extending portion 40b extending from the base end portion 40a, and the "key function portion" is integrally formed with the extending portion 40b.

On the other hand, in the second embodiment of the present invention, the key body BOD2 includes the key base 140 and the wood part 1.
60 and. The “key function unit” is formed integrally with the key base 140.

That is, a rotation fulcrum 140b is provided at the rear of the base end 140a of the resin key base 140.
An upper plate portion 140c extends from the base end portion 140a toward the front. From the upper plate portion 140c, in addition to the front portion 140d,
As the "key function part", the keyed guide part 140e, the mass body drive part 140f, the key actuator 140g, and the key drop-out prevention mechanism part 140h are respectively directed downward to the wood part 16
It pierces through 0. The wooden wood part 160 is
The upper plate 140c is adhered to the lower portion of the upper plate 140c substantially in parallel with the upper plate 140c.

In the present embodiment, the upper plate portion 140c serves as both the "key body portion" and the "key function member", but according to the present embodiment, the side surface in the longitudinal direction of the key body portion BOD2. Since the wood surface of the wood part 160 is arranged in the above, and the key function part is integrally formed on the upper plate part 140c of the key base body 140, the wood texture is given to the key and the degree of freedom of design of the key function part. With respect to increasing the key length and easily ensuring a high-precision key function, the same effect as that of the first embodiment can be obtained.

The arrangement of the wood part may be similarly applied to the black key. Further, in the first embodiment, the key structure 1
Although the wooden parts 60 are arranged on both side surfaces of 00, the wooden parts 60 may be provided only in the portions which are visually recognized when the key is operated. That is, in the first embodiment, the wood part 60 is arranged from the front part to the rear part of both side surfaces of the key structure 100 for all white keys, but from the viewpoint of reducing the cost while maintaining the wood texture. Is the key structure 100 for the white key
You may make it arrange | position only in the part which a black key does not adjoin among both side surfaces. This may be applied to the second embodiment as well.

From the viewpoint of imparting a wood texture, the wood part need not be wood, but may be any wood-based material, for example, a wood-grained decorative board (including printing, coating, painting, dipping boards, etc.),
Plywood, wood (MDF), etc. may be used.

Although the key base body 40 is made of resin, any other material can be used as long as it can maintain the durability and performance of the key function portion such as the keyed guide portion 42 formed integrally and can be easily processed. It may be composed of a material such as metal. Further, it is not always necessary to integrally form all the key function parts with the key base body 40, and it may be applied only to some of the key function parts.

[0037]

As described above, according to the present invention,
It is possible to increase the degree of freedom in designing the key function unit and easily secure a highly accurate key function while giving the key a wood texture.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a keyboard device including a key structure according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a cross section of the key structure at each position.

FIG. 3 is a diagram showing a modified example of a key structure.

FIG. 4 is a side view showing a configuration of a key structure according to a second embodiment of the present invention.

[Explanation of symbols]

100 key structure, 40 key base body (key function member), 40a base end part, 40b extended part, 41 rotation fulcrum (key fulcrum part), 42 keyed guide part (guided mechanism part, key function part) 43) Mass body drive part (part of key function part), 44 Key actuator (switch drive part, part of key function part), 45 Key drop prevention mechanism part (part of key function part), 50 Upper plate, 50a
Front part, 50b upper plate part, 60 wood part, 76 panel part, BOD key body part

Claims (3)

[Claims] 1. A long key body part, at least a part of which is made of a wood-based material, and a key functional member having a substantially parallel portion along the longitudinal direction of the key body part, are integrally operated. In the key body, the wooden surface is arranged on the side surface in the longitudinal direction of the key body, and at least one key function part is integrally formed on the key function member. Characterized key structure. 2. The key function part includes a key fulcrum part, a guided mechanism part for being guided by a key operation guide, a switch driving part for driving a key switch, and a mass body driving part for driving a mass body. 3. The key structure according to claim 2, wherein the key structure is at least one of a key drop prevention mechanism part for preventing the key drop prevention mechanism from falling off from the keyboard device. 3. The key structure according to claim 1, wherein the key function member is made of either metal or resin.