JP2011232484A - Keyboard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard device in which each space between adjacent keys can be adjusted independently with ease.SOLUTION: A plurality of keys 4 to 6 are disposed in parallel, and a plurality of deflection portions 10 are provided in rear of the respective keys 4 to 6. The deflection portions 10 are connected to connection support portions 7 to 9, respectively. Space adjustment portions 11 are deformably provided between the keys 4 to 6 and the connection support portions 7 to 9, respectively. Accordingly, deforming the space adjustment portion 11 changes a space between each of the keys 4 to 6 and each of the connection support portions 7 to 9, thereby displacing each of the keys 4 to 6 in a horizontal direction. Therefore, a simple work of deforming the space adjustment portion 11 makes it possible to independently adjust each space S between the adjacent keys 4 to 6.

Description

  The present invention relates to a keyboard device used for a keyboard instrument such as an electronic piano or an electronic organ.

  Conventionally, in a keyboard device such as an electronic piano, as described in Patent Document 1, a plurality of keys arranged in parallel and a rear portion of each of the plurality of keys are respectively bent and deformed in the vertical direction. A plurality of flexures and a connection support part arranged continuously in the arrangement direction behind the plurality of keys and connected to the respective rear portions of the flexures are integrally formed of synthetic resin. A configuration is known.

JP 2000-66660 A

  In such a keyboard device, the connection support portion is attached to the keyboard chassis with screws, and arranged on the keyboard chassis in a state where a plurality of keys are supported by the connection support portion, and the key is pressed in this state. The bent portion is bent and deformed downward, and the key is pushed down around the bent portion, and the depressed key is returned to the initial position by the elastic return force of the bent portion. Yes.

  In such a conventional keyboard device, when the connection support portion is attached on the keyboard chassis and a plurality of keys are arranged on the keyboard chassis, there may be variations in the gaps between the adjacent keys. In such a case, by adjusting the tightening force of a screw for attaching the connection support portion to the keyboard chassis, the key is displaced in the left-right direction to adjust the gap between adjacent keys. That is, if the screw is tightened strongly, the key will be displaced in the direction of rotation of the screw, and if the tightening force of the screw is loosened, the key will be displaced in the direction of rotation of the screw. The gap between adjacent keys is adjusted by force.

  However, in order to adjust the gap between adjacent keys with the screw tightening force in this way, the screw must be delicately tightened, which makes it difficult to tighten the screw and requires time for adjustment. Since this requires experience, the adjustment work is troublesome and there is a problem that the gap between adjacent keys cannot be easily adjusted. In particular, the screws for attaching the connection support part to the keyboard chassis are not provided for each of a plurality of keys, but are provided at predetermined intervals of the keys, so that there is a gap between adjacent keys. The adjustment work becomes even more difficult.

  The problem to be solved by the present invention is to provide a keyboard device that can easily adjust the gap between adjacent keys individually for each key.

In order to solve the above problems, the present invention includes the following components.
The invention according to claim 1 is provided with a plurality of keys arranged in parallel, and a plurality of bending portions that are respectively provided at the rear portions of the plurality of keys and are bent and deformed in the vertical direction as hinges according to a key pressing operation. The connecting support part is continuously arranged behind the plurality of keys in the arrangement direction, and the plurality of bending parts are connected to each other, and is deformable between the plurality of keys and the connecting support part. A keyboard device, comprising: a plurality of gap adjusting portions provided to adjust gaps between the adjacent keys by deformation.

  The invention according to claim 2 is the keyboard according to claim 1, wherein the gap adjusting portion is a deforming portion that deforms in the vertical direction and displaces the key in the substantially horizontal direction together with the bending portion. Device.

  A third aspect of the present invention is the keyboard device according to the second aspect, wherein a plurality of the deforming portions are provided along the longitudinal direction of the key.

  The invention according to claim 4 is the keyboard device according to claim 2 or 3, wherein the deforming portion is provided on each side of the bending portion in the key arrangement direction. .

  According to the present invention, a plurality of keys arranged in parallel and a connection support portion to which a plurality of flexure portions respectively provided at the rear portions of the plurality of keys are respectively connected are deformably provided. The interval between a plurality of adjacent keys can be individually adjusted for each key by a simple operation of simply deforming the plurality of gap adjustment units.

It is the front view which showed the principal part in Embodiment 1 of the keyboard apparatus to which this invention is applied. FIG. 2 is a side view, partly broken away, as viewed in the direction of arrows AA in FIG. 1. The 1st white key unit in FIG. 1 is shown, (a) is the front view, (b) is the partially broken side view in the BB arrow. The 2nd white key unit in FIG. 1 is shown, (a) is the front view, (b) is the partially broken side view in the CC arrow. The black key unit in FIG. 1 is shown, (a) is the front view, (b) is the partially broken side view in the DD arrow. It is an expansion perspective view of the principal part which showed the location of the bending part and clearance gap adjustment part which were shown by FIG. It is an expansion perspective view of the principal part which showed the state which changed the deformation | transformation part of the clearance gap adjustment part shown by FIG. FIG. 2 is a front view of the main part showing a state in which a part of white keys in the first white key unit in the keyboard device of FIG. 1 sways and a wide gap is formed between adjacent white keys. . It is the front view which showed the state which corrects the lateral shake of a part of white key in the 1st white key unit shown by FIG. In Embodiment 2 of the keyboard apparatus to which this invention is applied, it is the expansion perspective view of the principal part which showed the location of the bending part and the clearance gap adjustment part. FIG. 11 is an enlarged perspective view of a main part showing a state in which a deforming part on the rear side in the gap adjusting part shown in FIG. 10 is deformed to displace the key to either the left or right. FIG. 11 is an enlarged perspective view of a main part showing a state in which two deformed parts of the front and rear parts in the gap adjusting part shown in FIG. 10 are respectively deformed and the key is largely displaced to either the left or right. FIG. 11 is an enlarged perspective view of a main part showing a state in which a deforming part of an intermediate part in the gap adjusting part shown in FIG. 10 is deformed and the key is displaced to either the left or right.

(Embodiment 1)
Hereinafter, a first embodiment of a keyboard apparatus to which the present invention is applied will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the keyboard device includes a first white key unit 1, a second white key unit 2, and a black key unit 3.

  The first white key unit 1 has a plurality of white keys 4 (D, F, A keys), and the second white key unit 2 has a plurality of white keys 5 (C, E, G, B). Each key). The black key unit 3 has a plurality of black keys 6 (C #, D #, F #, G #, and A # keys). The keys 4 and 5 of the first and second white key units 1 and 2 and the keys 6 of the black key unit 3 are arranged in parallel in musical order.

  In this case, as shown in FIGS. 3A and 3B, the first white key unit 1 has rear end portions (see FIG. 3) of a plurality of white keys 4 (D, F, and A keys). 3 (b) is integrally connected to a first white key connection support portion 7 continuous in the arrangement direction of the white keys 4 via a bending portion 10 and a gap adjustment portion 11, respectively. Thus, a plurality of white keys 4 are arranged at predetermined intervals. That is, the first white key unit 1 includes a plurality of white keys 4, a plurality of flexures 10, a plurality of gap adjustment units 11, and a white key connection support unit 7, which are synthetic resins such as polypropylene resin and styrene resin. It is the structure integrally molded by.

  As shown in FIGS. 4A and 4B, the second white key unit 2 has rear end portions (FIG. 4) of a plurality of white keys 5 (C, E, G, B keys). The right end portion in (b) is integrally connected to the second white key connection support portion 8 continuous along the arrangement direction of the white keys 5 via the bending portion 10 and the gap adjustment portion 11, respectively. Thus, a plurality of white keys 5 are arranged at a predetermined interval, that is, at intervals arranged between the keys 4 of the first white key unit 1. In the second white key unit 2 as well, the plurality of white keys 5, the plurality of flexures 10, the plurality of gap adjustment units 11, and the white key connection support unit 8 are integrated with a synthetic resin such as polypropylene resin or styrene resin. The structure is molded into

  As shown in FIG. 5 (a) and FIG. 5 (b), the black key unit 3 has rear ends of a plurality of black keys 6 (C #, D #, F #, G #, and A # keys). The portion (the right end portion in FIG. 5B) is integrally connected to the black key connection support portion 9 that continues along the arrangement direction of the black keys 6 via the bending portion 10 and the gap adjustment portion 11, respectively. Thus, the plurality of black keys 6 are arranged at a predetermined interval, that is, at an interval between the keys 4 and 5 of the first and second white key units 1 and 2. In this black key unit 3 as well, a plurality of black keys 6, a plurality of bending portions 10, a plurality of gap adjusting portions 11, and a black connection support portion 8 are integrally formed of a synthetic resin such as polypropylene resin or styrene resin. It is configured.

  By the way, as shown in FIGS. 3A and 3B, the plurality of white keys 4 in the first white key unit 1 are formed at the respective rear ends thereof to form a first white key connection support portion. 5 is configured to rotate in the vertical direction with the respective flexures 10 integrally connected to 5 as fulcrums. The bent portion 10 is a portion corresponding to a hinge. As shown in FIGS. 6 and 7, the white key is connected and supported from the middle in the horizontal direction of the rear end portion of the white key 4, that is, in the arrangement direction of the white key 4. It is formed in a rib shape that bends and deforms in the vertical direction across the portion 5.

  That is, when the white key 4 is pressed, the bending portion 10 is supported by the white key connection support portion 5 and the front side (that is, the portion located on the rear side of the white key 4) is on the lower side. The white key 4 is rotated downward to be rotated downward, and thereafter the white key 4 is rotated upward and returned to the initial position by elastic return of the bending portion 10. . In this case, as shown in FIG. 3 (b), the bending portion 10 is provided at the lower portion of the rear end surface of the white key 4, that is, at a position slightly above the lower end portion of the rear end surface.

  Further, as shown in FIGS. 6 and 7, the gap adjusting portion 11 is provided between each rear end portion of the plurality of white keys 4 and the white key connection support portion 7. The gap adjusting portions 11 are a pair of deformable portions 12 provided on both sides of the bending portion 10 in the arrangement direction of the white keys 4 (both sides in the left-right direction in FIG. 6). As shown in FIG. 6, the pair of deformed portions 12 are formed to bulge into a substantially half pyramid shape with a small thickness.

  That is, as shown in FIG. 6, the deformable portion 12 gradually increases toward an intermediate portion between each rear end portion of the plurality of white keys 4 and the white key connection support portion 7, and the bent portion 10. It is formed so that it gradually becomes higher as it is farther from the side portion. For this reason, as shown in FIG. 6, the deformed portion 12 is formed such that the side portion 12 a away from the side surface of the bent portion 10 is longer than the length of the bent portion 10 in the front-rear direction.

  As a result, as shown in FIG. 7, when the deformed portion 12 is pushed from above, the deformed portion is deformed so that the portion swelled in a substantially half-pyramidal shape is crushed. By pushing the space between the rear part of the key 4 and the white key connection support part 7 and deforming it into a substantially V shape so that the highest part of the substantially half-pyramidal shape is lowest, the rear end part of the white key 4 is The white key 4 is slightly displaced in the left-right direction by pushing out toward the front side.

  That is, of the pair of deformable portions 12, the deformable portion 12 located on the right side of the bent portion 10 is pushed from above and deformed into a substantially V shape as shown in FIG. It is configured to be displaced in the direction. Moreover, the deformation | transformation part 12 located in the left side of the bending part 10 is comprised so that the white key 4 may be displaced to the right direction by being pushed from upper direction and deform | transforming into a substantially V shape. In this case, when the deforming portion 12 is pressed from above and is deformed into a substantially V shape, the amount of displacement of the white key 4 is slightly changed according to the pressing force from above.

  The first white key coupling support portion 7 of the first white key unit 1 is a band that is continuous along the arrangement direction of the white keys 4 as shown in FIGS. 3 (a) and 3 (b). It is formed in a plate shape, and the bent portion 10 and the gap adjusting portion 11 are integrally connected to the lower end portion of the front end surface (the left end surface in FIG. 3B), whereby the bent portion 10 and the gap adjusting portion 11 are connected. The plurality of white keys 4 are supported through the gaps. The first white key connection support portion 7 is attached to the keyboard chassis 13 by screws 14 at predetermined locations.

  On the other hand, the plurality of white keys 5 in the second white key unit 2 are formed at the rear end portions thereof as shown in FIGS. 8 is configured to rotate in the vertical direction with the respective bending portions 10 integrally connected to the fulcrum 8 as fulcrums. Also in this case, the bending portion 10 is a portion corresponding to a hinge, like the first white key unit 1, and is arranged in the arrangement direction of the white keys 5 at the rear end portion of the white key 4 (left and right direction in FIG. 6). It is formed in a rib shape that bends and deforms in the vertical direction from the intermediate portion to the white key connection support portion 8. As shown in FIG. 4B, the bending portion 10 is provided at the lower end portion of the rear end surface of the white key 5.

  Further, the gap adjusting portion 11 of each white key 5 in the second white key unit 2 is also similar to the first white key unit 1 in that each of the rear end portions of the plurality of white keys 5 and the white key connection support portion 78. Each is provided in between. In other words, the gap adjusting portion 11 is also a pair of deformable portions 12 provided on both sides of the bending portion 10 in the arrangement direction of the white keys 5. Similarly to the first white key unit 1, the pair of deformed portions 12 is also formed to bulge into a substantially half pyramid shape formed with a small thickness.

  That is, as shown in FIG. 6, the deforming portion 12 gradually increases toward the intermediate portion between the rear end portions of the plurality of white keys 5 and the white key connection support portion 8, and the bending portion 10. It is formed so that it gradually becomes higher as it is farther from the side portion. For this reason, the deformed portion 12 is also formed such that the side portion 12 a away from the side surface of the bent portion 10 is longer than the length of the bent portion 10 in the front-rear direction.

  As a result, as shown in FIG. 7, when the deformed portion 12 is pushed from above, the deformed portion is deformed so that the portion swelled in a substantially half-pyramidal shape is crushed. By pushing the space between the rear part of the key 5 and the white key connection support part 8 and deforming it into a substantially V shape so that the highest part of the substantially half-pyramidal shape is lowest, the rear end part of the white key 5 is The white key 5 is slightly displaced in the left-right direction by pushing out toward the front side. Also in this case, when the deforming portion 12 is pressed from above and is deformed into a substantially V shape, the amount of displacement of the white key 5 slightly changes according to the pressing force from above. .

  The white key connection support portion 8 of the second white key unit 2 is also formed in a band plate shape that is continuous along the arrangement direction of the white keys 7, as shown in FIGS. 4 (a) and 4 (b). The bent portion 10 and the gap adjusting portion 11 are integrally connected to the intermediate portion of the front end surface (the left end surface in FIG. 4B), and thereby a plurality of the bent portion 10 and the gap adjusting portion 11 are connected. The white key 5 is supported. The second white key connection support portion 8 is also attached to the keyboard chassis 13 by screws 14 at predetermined locations.

  Similarly, the plurality of black keys 6 in the black key unit 3 are formed at the respective rear end portions and integrally connected to the black key connection support portion 9 as shown in FIGS. 5 (a) and 5 (b). It is comprised so that it may rotate in the up-down direction by using each bent part 10 made to be a fulcrum. Also in this case, like the first and second white key units 1 and 2, the bending portion 10 is a portion corresponding to a hinge, and the arrangement direction of the black keys 6 at the rear end portion of the black key 6 (see FIG. 6 is formed in a rib shape that bends and deforms in the vertical direction from the intermediate portion in the left-right direction) to the black key connection support portion 9. As shown in FIG. 5B, the bent portion 10 is provided at the lower portion of the rear end surface of the black key 6.

  Further, the gap adjusting portion 11 of each black key 6 in the black key unit 3 is also connected to the rear end portions of the plurality of black keys 6 and the black key connection support in the same manner as the first and second white key units 1 and 2. It is provided between each part 6. In other words, the gap adjusting portion 11 is also a pair of deformable portions 12 provided on both sides of the bent portion 10 in the arrangement direction of the black keys 6. Similarly to the first and second white key units 1 and 2, the pair of deformed portions 12 is also formed to bulge into a substantially half pyramid shape with a small thickness.

  That is, as shown in FIG. 6, the deformable portion 12 also gradually increases toward the intermediate portion between each rear end portion of the plurality of black keys 6 and the black key connection support portion 9, and the bent portion 10. It is formed so that it gradually becomes higher as it is farther from the side portion. For this reason, the deformed portion 12 is also formed such that the side portion 12 a away from the side surface of the bent portion 10 is longer than the length of the bent portion 10 in the front-rear direction.

  As a result, like the first and second white key units 1 and 2, the deforming portion 12 is deformed so that, when pressed from above, the portion swelled in a substantially half pyramid shape is crushed. By pushing the gap between the rear part of the black key 6 and the black key connecting support part 9 by the tension force of the deforming part 12, it is deformed into a substantially V shape so that the highest part of the substantially half pyramid shape becomes the lowest. The black key 6 is pushed out toward the front side so that the black key 6 is slightly displaced in the left-right direction. Also in this case, when the deforming portion 12 is pressed from above and deforms into a substantially V shape, the amount of displacement of the black key 6 is slightly changed according to the pressing force from above. .

  As shown in FIGS. 5 (a) and 5 (b), the black key connection support portion 9 of the black key unit 3 is also formed in a band plate shape continuous in the arrangement direction of the black keys 6, and its front end. The bent portion 10 and the gap adjusting portion 11 are integrally connected to the upper surface of the portion (the left end surface in FIG. 5B), thereby supporting the plurality of black keys 6 via the bent portion 10 and the gap adjusting portion 11. Is configured to do. The black key connection support portion 9 is also attached to the keyboard chassis 13 by screws 14 at predetermined locations.

  By the way, as shown in FIGS. 1 and 2, the first and second white key units 1 and 2 and the black key unit 3 are respectively connected to the first and second white key connection support portions 7 and 8 and the black key. In this state, the first and second white key connection support portions 7 and 8 and the black key connection support portion 9 are fastened by a plurality of screws 14 and fixed on the keyboard chassis 13. It is comprised so that.

  As a result, the first and second white key units 1 and 2 and the black key unit 3 are connected between the white keys 4 in the first white key unit 1 as shown in FIG. The white keys 4, 5 and the black keys 6 are alternately arranged between the white keys 5 in the unit 2 and between the black keys 6 in the black key unit 3. Has been.

Next, a case where such a keyboard device is assembled and the gap between the white keys 4 and 5 and the black keys 6 is adjusted will be described.
In this keyboard device, first, the first and second white key connection support portions 7 and 8 and the black key connection support portion 9 are overlapped, and the first and second white key connection support portions 7, 8 and the black key connection support portion 9 are fastened by a plurality of screws 14 and fixed on the keyboard chassis 13.

  Then, the first and second white key units 1 and 2 and the black key unit 3 are arranged between the white keys 4 in the first white key unit 1 as shown in FIG. The white keys 4, 5 and the black keys 6 are alternately arranged between the white keys 5 in FIG. 2 and between the black keys 6 in the black key unit 3, and are arranged in a musical order.

  In this case, when each of the first and second white key units 1 and 2 and the black key unit 3 is molded with a molding die and is taken out, the mold release failure from the molding die or the assembly will be reduced. The gap S between the white keys 4 and 5 and the black keys 6 may vary due to poor accuracy at the time. For example, as shown in FIG. 8, when one white key 4 (F key) in the first white key unit 1 is arranged in the right direction due to mold release failure or accuracy failure, this F key The gap S between the white key 5 (E key) of the second white key unit 2 adjacent to the white key 4 increases.

  In such a case, as shown in FIG. 9, of the pair of deformation portions 12 of the gap adjustment portion 11 corresponding to the F white key 4 in the first white key unit 1, the position is on the right side of the bending portion 10. The deformation part 12 to be pressed is pushed down. Then, as shown in FIG. 7, the deformed portion 12 located on the right side of the bent portion 10 is deformed so as to be crushed. That is, when the deforming portion 12 is pushed from above, the deformed portion is deformed so that the substantially half-pyramidal portion is crushed. At this time, the rear portion of the white key 4 and the white key connecting support portion 7 are And is deformed into a substantially V shape so that the highest part of the substantially half-pyramidal shape becomes the lowest.

  In this way, when the deforming portion 12 located on the right side of the bending portion 10 is deformed, the rear portion of the white key 4 is pushed out toward the front side, so that the white key 4 of F is shown in FIG. Displaces slightly to the left. As a result, the deviation of the F white key 4 caused by a defective mold release or poor accuracy is corrected, and the gaps S between the white keys 4 and 5 and the black keys 6 become uniform as shown in FIG. The white keys 4, 5 and the black keys 6 can be arranged well.

  In this case, when the deforming portion 12 is pressed from above and deforms into a substantially V shape, the amount of displacement of the white key 4 is slightly changed according to the pressing force from above. In addition, the gap S between the black keys 6 can be accurately adjusted to be uniform. Further, when adjusting the gap by displacing the white key 4 in the right direction, if the deformation portion 12 located on the left side of the bending portion 10 is pushed down and the deformation portion 12 is deformed in the same manner as described above. good.

  Such adjustment of the gap S is not limited to each white key 4 of the first white key unit 1, but is applied to each white key 5 of the second white key unit 2 and each black key 6 of the black key unit 3. However, even when the gap S between each white key 5 and each black key 6 varies due to a mold release failure from the molding die or an accuracy failure during assembly, as described above, The white keys 4, 5 and the black keys 6 can be arranged well by correcting the bias of the keys 5, 6 and making the gaps S between the keys 4, 6 uniform.

  As described above, according to this keyboard device, the plurality of keys 4 to 6 arranged in parallel and the rear portions of the plurality of keys 4 to 6 are respectively provided in the vertical direction as hinges according to the key pressing operation. A plurality of flexures 10 that bend and deform, and connection support portions 7 to 9 that are continuously arranged in the arrangement direction behind the plurality of keys 4 to 6 and to which the plurality of flexures 10 are respectively connected, and a plurality of keys 4 to 6 and the connection support portions 7 to 9 are provided so as to be deformable, and a plurality of gap adjustment portions 11 for adjusting the gaps S of the adjacent keys 4 to 6 by deformation, respectively. Since it is provided, each gap S between the adjacent keys 4 to 6 can be easily adjusted.

  That is, in this keyboard device, a plurality of keys 4 to 6 arranged in parallel and a plurality of flexures 10 respectively provided at the rear portions of the plurality of keys 4 to 6 are connected to the connection support portions 7 to 7. 9, the gap adjustment unit 11 is provided so as to be deformable. Therefore, by simply selecting and deforming any one of the gap adjustment units 11, a plurality of adjacent keys 4 to 4 are arranged. Each of the intervals S of 6 can be adjusted satisfactorily for each of the keys 4-6.

  In this case, the gap adjusting portion 11 is a pair of deforming portions 12 that are deformed in the vertical direction to displace the keys 4 to 6 together with the deflecting portions 10 in a substantially horizontal direction, and thus either one of the pair of deforming portions 12 is used. By simply pressing, the deformable portion 12 can be easily deformed, whereby the intervals S between the adjacent keys 4 to 6 can be easily and reliably adjusted.

  That is, the deformation portion 12 gradually increases toward the intermediate portion between the rear portions of the plurality of keys 4 to 6 and the connection support portions 7 to 9 and gradually increases as the distance from the side portion of the bending portion 10 increases. Since it is formed in a substantially half-pyramid shape that becomes higher, when the deforming portion 12 is pushed from above, the highest part of the substantially half-pyramidal shape is deformed so as to become the lowest, thereby allowing the keys 4 to 6 to move in the horizontal direction. Can be displaced.

  In this case, since the deformed portion 12 is formed in a substantially half pyramid shape, the side portion 12a away from the side surface of the bent portion 10 is formed longer than the length in the front-rear direction of the bent portion 10. When pressed from above, the substantially half-pyramidal portion is deformed so as to be crushed, and at this time, the space between the rear portion of the white key 4 and the white key connection support portion 7 is expanded by the tensile force of the deformable portion 12. By deforming into a substantially V shape so that the highest portion of the cone shape is lowest, the rear portions of the keys 4 to 6 can be pushed out toward the front side.

  Thereby, the deformation | transformation part 12 can displace the keys 4-6 reliably and favorable to the left-right direction by the deformation | transformation. In this case, when the deforming portion 12 is pressed from above and deforms into a substantially V shape, the amount of displacement of the white key 4 can be slightly changed according to the pressing force from above. The intervals S of the keys 4 to 6 can be finely adjusted.

  Moreover, since this deformation | transformation part 12 is each provided in the both sides of the sequence direction of the keys 4-6 in the bending part 10, the deformation | transformation part 12 located in the right side of the bending part 10 is pushed from upper direction, and is substantially V-shaped. The keys 4 to 6 can be displaced in the left direction by being deformed to the left, and the deformed portion 12 located on the left side of the bent portion 10 is pushed from above to be deformed into a substantially V-shape, whereby the key 4 ˜6 can be displaced to the right.

  For this reason, since this deformation | transformation part 12 can displace one key 4-6 in either direction of the left-right direction, while being able to adjust each clearance gap S of the keys 4-6 separately, When pressing the deformable portions 12 provided on both sides of the flexure portion 10 from above, the keys 4 to 6 can be slightly displaced in the left-right direction by changing the push-down force from above to the left and right. The intervals S between the adjacent keys 4 to 6 can be adjusted accurately and delicately.

  Furthermore, in this keyboard device, the first and second white key units 1 and 2 and the black key unit 3 can be easily produced as molding molds for integrally molding the first and second white key units 1 and 2, respectively. Each of the white key units 1 and 2 and the black key unit 3 can be manufactured at low cost. Further, by providing a hole for repair into which a tool such as a screwdriver is inserted at the bottom of a musical instrument case (not shown) for housing the keyboard chassis 13 on which the keys 4 to 6 are arranged, the key can be maintained even after the product is assembled. Since the gap S of 4 to 6 can be easily adjusted, maintenance performance such as maintenance inspection is good.

(Embodiment 2)
Next, a second embodiment of the keyboard apparatus to which the present invention is applied will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as Embodiment 1 shown by FIGS.
As shown in FIG. 10, the keyboard device has a configuration in which the gap adjusting unit 20 is different from that in the first embodiment, and the other configuration is the same as that in the first embodiment. In this case, the keyboard device also includes the first and second white key units 1 and 2 and the black key unit 3, but only the first white key unit 1 will be described below.

  As in the first embodiment, the first white key unit 1 includes a first white key 4 in which rear end portions (right end portions in FIG. 10) are continuous along the arrangement direction of the white keys 4. It is configured to be integrally connected to the key connection support portion 7 via the bending portion 10 and the gap adjustment portion 20, respectively. Also in this case, the first white key unit 1 includes the plurality of white keys 4, the plurality of flexures 10, the plurality of gap adjustment units 20, and the white keys 4 in a state where the plurality of white keys 4 are arranged at a predetermined interval. The key connection support portion 7 is integrally formed of synthetic resin such as polypropylene resin or styrene resin.

  As in the first embodiment, the bending portion 10 is a rib-like shape that bends and deforms in the left-right direction at the rear end portion of the white key 4, that is, from the intermediate portion in the arrangement direction of the white key 4 to the white key connection support portion 5. Is formed. The bending portion 10 is also a portion corresponding to a hinge. When the white key 4 is pressed, the bending portion 10 is supported by the white key connection support portion 5 and is located on the front side (that is, the rear portion of the white key 4). When the portion is bent downward, the white key 4 is rotated downward. After that, the bent portion 10 is elastically restored, so that the white key 4 is rotated upward to return to the initial position. It is configured.

  By the way, as shown in FIG. 10, the gap adjusting portion 20 is positioned between each rear end portion of the plurality of white keys 4 and the white key connection support portion 7, and the white keys 4 are arranged in the bending portion 10. Are provided on both sides. As shown in FIG. 10, the gap adjusting unit 20 includes three thinly deformed portions 21 to 23 that are substantially wave-shaped along the longitudinal direction of the white key 4 (that is, the front-rear direction of the white key 4). Is formed.

  As shown in FIG. 10, the three deformed portions 21 to 23 are formed so that the portion located on the side surface of the bent portion 10 is substantially linear, and the side portion 20 a away from the side surface of the bent portion 10 changes up and down. By being formed into a wave shape, the side portion 20 a is formed longer than the length of the bent portion 10 in the front-rear direction.

  In this case, of the three deformable portions 21 to 23, the two deformable portions 21 and 23 positioned before and after the bent portion 10 are, as shown in FIG. 10, the rear end portion of the white key 4 and the white key connection support portion. 7 and gradually increases toward the upper side, and gradually increases as the distance from the side portion of the bending portion 10 increases. Further, the deforming portion 22 located in the middle gradually becomes lower toward the lower side at the intermediate portion between the rear end portion of the white key 4 and the white key connection support portion 7 and from the side portion of the bending portion 10. It is formed so that it gradually becomes lower as it leaves.

  As a result, as shown in FIG. 11, when the deforming portion 23 located on the rear side is deformed so that the gap adjusting portion 20 is crushed by being pushed from above, the rear portion of the white key 4 is caused by the tensile force of the deforming portion 23. And the white key connecting support portion 7 is expanded so that the highest portion of the rear-side deformable portion 23 is deformed so as to be lower like the intermediate deformable portion 22, thereby the rear end portion of the white key 4. The white key 4 is slightly displaced in the left-right direction by pushing the key toward the front side.

  That is, among the pair of gap adjustment parts 20, the gap adjustment part 20 located on the right side of the bending part 10 is, as shown in FIG. 11, the deformation part 23 located on the rear side among the three deformation parts 21 to 23. When the key is pushed and deformed from above, the white key 4 is displaced leftward. Similarly, the gap adjustment unit 20 is configured to displace the white key 4 in the left direction when the deformation unit 21 located on the front side among the three deformation units 21 to 23 is deformed by being pushed from above. Has been.

  In addition, when the two deforming portions 21 and 23 located at the front and rear portions of the three deforming portions 21 to 23 are pressed and deformed from above, the gap adjusting portion 20 is deformed as shown in FIG. Due to the tension of the two deforming portions 21 and 23, the space between the rear portion of the white key 4 and the white key connection support portion 7 is greatly expanded, and the highest portion of the deforming portions 21 and 23 is as low as the intermediate deforming portion 22. The white key 4 is greatly displaced in the left direction by being deformed as described above.

  Further, as shown in FIG. 13, the gap adjusting unit 20 located on the right side of the bending portion 10 is deformed so as to bulge upward when the intermediate deforming portion 22 is pressed from below, and the white key 4 By pulling the rear part and the white key connection support part 7 so as to be contracted and deforming so that the lowest part of the intermediate deformation part 22 becomes the highest, the rear end part of the white key 4 is directed rearward. The white key 4 is displaced in the right direction.

  For this reason, this gap adjustment part 20 makes the white key 4 slightly displace in one of the left and right directions by selectively deforming the three deformation parts 21 to 23 located on one side of the bending part 10. It is configured. In addition, the gap adjusting unit 20 is provided on both sides of the deflecting unit 10, thereby selectively deforming each of the three deforming units 21 to 23 located on both sides of the deflecting unit 10, respectively. The white key 4 is configured to be displaced further finely in either the left or right direction.

  Also in this case, when the three deforming parts 21 to 23 are pushed and deformed in the vertical direction, the displacement amount of the white key 4 is slightly changed according to the pushing force. Further, such a gap adjusting unit 20 is not limited to each white key 4 of the first white key unit 1, but each white key 5 of the second white key unit 2 and each black key 6 of the black key unit 3. Are also provided respectively.

  Thus, according to this keyboard apparatus, it is located between each rear part of the some keys 4-6 and the connection support parts 7-9, and it is a clearance gap on the both sides of the arrangement direction of the keys 4-6 in the bending part 10. Each adjustment part 20 is provided, and each gap adjustment part 20 has a configuration in which three thin deformation parts 21 to 23 are continuously formed in a substantially wave shape along the front and rear direction of the keys 4 to 6. Therefore, as in the first embodiment, the intervals S between the adjacent keys 4 to 6 can be individually adjusted for the respective keys 4 to 6.

  That is, the gap adjusting unit 20 is configured so that the three deforming parts 21 to 23 are continuously formed in a substantially wave shape along the front-rear direction of the keys 4 to 6, and thus is positioned before and after the bending part 10. By deforming one of the two deformable portions 21 and 23, the keys 4 to 6 can be displaced in one direction left and right (for example, the left direction shown in FIG. 11). By deforming, the keys 4 to 6 can be displaced in the left and right directions (for example, the right direction shown in FIG. 12).

  In this case, when the two deformable portions 21 and 23 located in the front and rear portions of the three deformable portions 21 to 23 are respectively deformed by being pressed from above, the gap adjusting portion 20 moves the keys 4 to 6 in one direction left and right. It can be greatly displaced (for example, in the left direction shown in FIG. 11). For this reason, this gap adjustment part 20 slightly displaces the keys 4 to 6 in either the left or right direction by selectively deforming the three deformation parts 21 to 23 located on one side of the bending part 10. be able to.

  Further, when the three deforming portions 21 to 23 are pushed and deformed in the up and down direction, the displacement amounts of the keys 4 to 6 can be slightly changed according to the pushed force. 4, 5 and each black key 6 can be finely adjusted accurately and satisfactorily so as to be uniform.

  Further, the gap adjusting portion 20 is provided on both sides of the bending portion 10 in the arrangement direction of the keys 4 to 6, so that each of the three deformation portions 21 to 23 located on both sides of the bending portion 10 is provided. By selectively deforming, the keys 4 to 6 can be displaced more delicately in either the left or right direction, so that each interval between the adjacent keys 4 to 6 can be changed more than in the first embodiment. S can be finely adjusted individually for each key 4-6.

  In addition, in Embodiment 2 mentioned above, although the case where the clearance gap adjustment part 20 was each provided in the both sides of the arrangement direction of the keys 4-6 in the bending part 10 was described, not only this but the clearance gap adjustment part 20 is provided, for example. The structure provided only in either one of the bending parts 10 may be sufficient. Thus, even if it is the structure which provided the clearance gap adjustment part 20 only in one side, the keys 4-6 can be displaced to any one of the left-right only by deform | transforming any of the three deformation | transformation parts 21-23. Can do.

1, 2 Each of the first and second white key units 3 Black key unit 4, 5 White key 6 Black key 7, 8 White key connection support portion 9 Black key connection support portion 10 Deflection portion 11, 20 Gap adjustment portion 12, 21-23 Deformation part 13 Keyboard chassis 14 Screw

Claims (4)

A plurality of keys arranged in parallel;
A plurality of bending portions provided at each rear portion of the plurality of keys, and flexibly deforming vertically as a hinge in response to a key pressing operation,
A connection support part that is continuously arranged in the arrangement direction behind the plurality of keys and to which the plurality of bending parts are connected, respectively.
A plurality of gap adjusting portions provided in a deformable manner between the plurality of keys and the connection support portion, respectively, for adjusting the gaps between the adjacent keys by deformation; and
A keyboard device characterized by comprising:   2. The keyboard device according to claim 1, wherein the gap adjusting unit is a deforming unit that deforms in the vertical direction and displaces the key in the substantially horizontal direction together with the bending unit.   The keyboard device according to claim 2, wherein a plurality of the deforming portions are provided along the longitudinal direction of the key. The keyboard device according to claim 2, wherein the deforming portion is provided on each side of the bending portion in the key arrangement direction.

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