JP2004205766A - Keyboard structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make respective keys independently movable along an array of keys in a stacked state and to individually adjust positions by the keys eventually individually. <P>SOLUTION: A keyboard unit is constituted by stacking base end parts 11, 21, and 31 of a black key unit 10 and white key units 20 and 30 in this order. White key main bodies 23 and 33 are able to swing in key pressing/releasing directions and hardly swing in the key array direction. Adjacent base end parts 21 in the unit 20 are connected together by an elastic connection part 26 and the gap is expansible. The unit 30 is also similarly constituted. The base end parts 11 and 21, and 21 and 31 are in the same relation with rail type fitting parts F1 and F2, and fitting corresponding parts M2 and M3 and enter fitting states slidably in the key array direction, and the base end parts 21 and 31 can slide to move in the kay array direction eventually relatively to the base end part 11. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a keyboard structure in which a plurality of key units each having a base end and a key body connected by a connection portion are stacked and attached to a key frame.
[0002]
[Prior art]
Conventionally, as shown in Patent Literatures 1 and 2 below, a black key unit and a white key unit formed by connecting a base end portion and a key body at a connection portion (hinge portion) are laminated at each base end portion. A keyboard structure adapted to be attached to a key frame is known.
[0003]
In these keyboard structures, five black key bodies are arranged in the black key unit, and three and four white key bodies are arranged in the two white key units, respectively. The unit and the lower white key unit are superimposed on the common base end in this order. The relative positional relationship of these three key units in the key arrangement direction is such that when the three key units are stacked, for example, the positioning pins provided on the black key unit are inserted and fitted into the holes provided on both white key units. Uniquely defined by
[0004]
Further, each connecting portion is formed to be thin and wide so as to suppress swinging of the corresponding key body in the key arrangement direction, thereby eliminating the need to provide a key press / release key guide portion on the key frame side. I have. Each key unit is integrally formed of a resin with a mold, and therefore, the position of each key in the same key unit is fixedly determined after molding.
[0005]
On the other hand, in the keyboard structure of Patent Literature 3 below, the common base ends of adjacent white keys are connected to each other at a thin key portion, and after molding with a mold, the key portion is deformed so that the white keys are connected to each other. The distance can be changed in the direction of decreasing the distance.
[0006]
[Patent Document 1]
Japanese Patent No. 3082696
[Patent Document 2]
Japanese Patent No. 3307263
[Patent Document 3]
Japanese Utility Model Publication No. 5-42474
[0007]
[Problems to be solved by the invention]
However, in the keyboard structures disclosed in Patent Documents 1 and 2, the key unit in which the key body is tilted in the left-right direction (key arrangement direction) from the connection portion during molding with the mold, and the key tip swings right and left after the molding process. The phenomenon of completion may occur. This phenomenon is thought to involve many factors such as the shape of the key unit itself and the temperature and time management during die molding. It is not easy to completely eliminate the deflection of the tip, and the key unit having the deflection is generated, though large or small.
[0008]
And even if there is only one defective key whose key tip is deflected by a predetermined amount or more, if the key unit having the defective key is used for assembling, the clearance between adjacent key bodies after assembling to the key frame becomes wider than an appropriate value. In this case, the key unit having the defective key or all of the three stacked key units become defective, resulting in a poor yield.
[0009]
In particular, since a white key is longer than a black key, a slight bend in the connection portion is likely to appear as a large deflection at the tip of the key, and is more likely to be defective than a black key.
[0010]
Further, in the keyboard structure of Patent Document 3, when assembling the white key unit to the black key unit, a boss protruding from the lower part of the black key unit is fitted into a fitting hole provided in a common mounting portion of the white key unit. Thus, since the positioning of each white key in the key arrangement direction is performed, for example, the position in the key arrangement direction cannot be adjusted for each white key, and thus there is a problem similar to the above.
[0011]
The present invention has been made in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to make each key independently movable in the key arrangement direction in a stacked state, and to individually adjust the position of each key afterward. It is to provide a keyboard structure that can be used.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a keyboard structure according to claim 1 of the present invention has a base end portion, at least one key body, and a key body provided corresponding to the key body, which is swung in the key pressing / release direction. A first and a second key unit integrally formed with a connection portion connected to the base end portion so as to be movable and to suppress swinging in the key arrangement direction, wherein the first key The base end of the first key unit and the base end of the second key unit are stacked so that the key body of the unit and the key body of the second key unit do not overlap with each other. A key structure in which an end is attached to a key frame to assemble a key unit. The key structure is provided on one of both base ends of the first and second key units in a key arrangement direction. An extended fitting portion is provided, and when the two base end portions are laminated, the fitting portion is A mating corresponding part is provided on the other of the two base ends, and the two key ends are laminated and the fitting part and the mating corresponding part are fitted to each other. A base end is configured to be slidable relative to a base end of the first key unit in a key arrangement direction, and the second key unit includes the base end, the key body, and the connection. It is characterized in that a plurality of combinations of parts are arranged in parallel, and each combination can slide independently.
[0013]
According to this configuration, when the two base ends of the first and second key units are stacked, the fitting part provided on one of the two base ends and the fitting corresponding part provided on the other are in a fitted state. As a result, the base end of the second key unit is slidable relative to the base end of the first key unit in the key arrangement direction. In particular, the second key unit includes the base end, A plurality of combinations of the key body and the connection portion are arranged side by side, and each combination can be slid independently, so that each combination is moved with respect to the first key unit to optimize each combination. Position. Therefore, each key can be independently moved in the key arrangement direction in a stacked state, and the position of each key can be individually adjusted afterwards.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a plan view of a black key unit applied to a keyboard structure according to one embodiment of the present invention. In the present keyboard structure, as will be described later, a black key unit 10, an upper white key unit 20, and a lower white key unit 30 each for one octave are stacked at their respective base ends 11, 21, 31 to form a keyboard unit. Is configured. Then, a plurality of octaves of the keyboard unit are attached to a key frame 40 described later, and a plurality of octaves are continuously provided in the key arrangement direction.
[0016]
The black key unit 10 is integrally formed of resin, and is configured such that five black key main bodies 13 are connected to a (common) base end portion 11 by a connection portion 12. The connecting portion 12 is formed thin and wide similarly to those described in Patent Documents 1 and 2, and each black key body 13 can swing in the key pressing / release direction. The swing in the key arrangement direction is suppressed to the extent that the guide portion is unnecessary. Hereinafter, the front end direction (the player side) of the black key body 13 is referred to as the front.
[0017]
A pair of locking pieces 16 for fitting to the key frame 40 extend from the rear portion of the base end 11. The base end portion 11 is provided with a mounting hole 15 for mounting the keyboard unit to the key frame 40 and a mounting hole 14 for mounting a member such as a panel arranged behind the keyboard.
[0018]
FIG. 2 is a perspective view of the black key unit 10 as viewed obliquely from below. From the base end 11, seven projections 17 are integrally provided to protrude downward. Since these projections 17 correspond to the keys C to B, respectively, which are white keys for one octave, which will be described later, when individually referred to hereafter, the projections 17C, 17D,. It writes in.
[0019]
FIG. 3A is a plan view of the upper white key unit 20, and FIG. 3B is a plan view of the lower white key unit 30.
[0020]
The upper white key unit 20 is configured such that a white key main body 23 for C, E, G, and B keys is connected to a base end portion 21 by a connection portion 22. The lower white key unit 30 is configured by connecting a white key body 33 for D, F, and A keys to a base end portion 31 at a connection portion 32. The configuration of the connecting portions 22 and 32 is the same as that of the connecting portion 12, and the white key bodies 23 and 33 can swing in the key pressing and releasing directions and hardly swing in the key arrangement direction.
[0021]
Adjacent base ends 21 in the upper white key unit 20 are connected by an elastic connecting portion 26. That is, a combination of the base end portion 21, the white key main body 23, and the connection portion 22 is arranged in a plurality (four) in the key arrangement direction. The upper white key unit 20 is integrally formed of a resin including the elastic connecting portion 26 by die molding. Since the elastic connecting portion 26 is formed in a thin and flexible shape (M-shape in plan view), it has elasticity mainly in the key arrangement direction. The lower white key unit 30 is similarly configured, and the adjacent base ends 31 are connected to each other by an elastic connecting portion 36. Therefore, after molding, the distance between the adjacent base ends 21 and 31 can be freely expanded and contracted to some extent (several mm) by the elasticity of the elastic connecting portions 26 and 36.
[0022]
The base end 21 of the upper white key unit 20 has a slightly elongated hole 24 in the longitudinal direction of the key body 23, a slightly elongated hole 25 in the key arrangement direction, and an elongated elongated hole 27 (27C, 27E, 27G, 27B) in the key arrangement direction. ), A circular hole 28 (28D, 28F, 28A), and a notch 29. The base end portion 31 of the lower white key unit 30 has a slightly elongated hole 34 in the longitudinal direction of the key body 33, a slightly elongated hole 35 in the key arrangement direction, and an elongated hole 37 (37D, 37F, 37A) elongated in the key arrangement direction. , And a circular hole 38 (38C, 38E, 38G, 38B).
[0023]
The holes 24, 34 and the notch 29 correspond to the mounting holes 14 in the base end 11 of the black key unit 10. The holes 25 and 35 correspond to the mounting holes 15 of the base end 11. The elongated holes 27C, 37D, 27E, 37F, 27G, 37A, and 27B correspond to the projections 17C, 17D,..., 17B of the base end 11, respectively, and the corresponding projections 17 are inserted. The circular holes 38C, 28D, 38E, 28F, 38G, 28A, 38B correspond to the projections 17C, 17D,... 17B of the base end 11, respectively, and the corresponding projections 17 are inserted.
[0024]
The diameter of each of the circular holes 28, 38 is sufficiently larger than the diameter of the projection 17, and when the base ends 11, 21, 31 are stacked, the projection 17 passes through the circular holes 28, 38. On the other hand, the width in the front-rear direction of each of the long holes 27 and 37 is substantially the same as the diameter of the protruding portion 17, and when the base ends 11, 21 and 31 are laminated, the base ends 11, 21 and 31 are stacked. Plays a role of temporary fixing.
[0025]
The circular holes 28 and 38 and the elongated holes 27 and 37 serve as a guide for the positions of the white key units 20 and 30 when the base ends 11, 21 and 31 are stacked. By inserting the base ends 21 and 31 in the key arrangement direction by inserting the base holes 21 and 31 into the elongated holes 27 and 37, the approximate positioning can be easily performed.
[0026]
FIG. 4 is an assembly diagram showing a procedure for stacking and positioning each key unit.
[0027]
<Assembly using jig>
First, the assembling using the jig 50 will be described. The jig 50 has a concave portion 51 fitted to the base end portion 31, a reference pole 52 protruding substantially at the center of the concave portion 51 in the key arrangement direction, and eight projecting ribs 53. The thickness of the protruding rib 53 is substantially equal to the appropriate gap between the white keys, and the interval between the adjacent protruding ribs 53 is substantially equal to the width of the operation portion of the white key bodies 23 and 33.
[0028]
In this configuration, the lower white key unit 30 is lowered from above the jig 50, the base end 31 of the lower white key unit 30 is fitted into the recess 51, and the reference pole 52 is connected to the lower white key unit 30. It is inserted through the hole 34. Then, since the white key body 33 is to be fitted into the corresponding protruding ribs 53 in a narrow manner, the elastic connecting portion 36 is set so that the position of the white key body 33, particularly in the key arrangement direction, is particularly appropriate at the front end. Expands and contracts, and the position of each base end 31 in the key arrangement direction is automatically corrected. As a result, each base end 31 fits in an arrangement that is optimal for the position of the front end of the white key body 33. At this time, the distance between the base ends 31 is not always equal.
[0029]
Next, the upper white key unit 20 is lowered from above, the base end 21 of the upper white key unit 20 is fitted to the base end 31, and the reference pole 52 is inserted through the cutout portion 29 of the upper white key unit 20. Then, similarly to the above, the position of each base end portion 21 in the key arrangement direction is automatically corrected, and the position is set in an appropriate arrangement.
[0030]
Next, the black key unit 10 is lowered from above, the base end 11 of the black key unit 10 is fitted to the base end 21, and the reference pole 52 is inserted through the hole 14 of the lower white key unit 30. At this time, the projections 17 of the black key unit 10 are inserted into the corresponding circular holes 28 and 38 and the elongated holes 27 and 37 of the white key units 20 and 30. Since the circular holes 28 and 38 are larger than the projections 17 and the elongated holes 27 and 37 are longer in the key arrangement direction, the base end 11 is stacked on the base ends 21 and 31 whose positions have been corrected. At this time, the projection 17 is inserted into the circular holes 28 and 38 and the elongated holes 27 and 37 without any trouble.
[0031]
The keyboard unit (hereinafter, referred to as a “laminated keyboard unit”) including the key units 10, 20, and 30 stacked in this manner is removed from the jig 50 and attached to the key frame 40.
[0032]
FIG. 5 is a partial side view showing the rear part of the laminated keyboard unit attached to the key frame.
[0033]
In the laminated keyboard unit, the lower surface of the base end portion 11 of the black key unit 10 and the upper surface of the base end portion 21 of the upper white key unit 20 are formed by a rail-shaped fitting portion F1 having a concave shape in a side view and the rail-shaped fitting portion. In a relationship with the fitting corresponding portion M2 corresponding to F1 and having a convex shape in side view, the fitting state is slidable relatively in the key arrangement direction. That is, inside contact surfaces 11a and 11b are formed below the base end portion 11 as part of the rail-shaped fitting portion F1, and above the base end portion 21 as part of the fitting corresponding portion M2. Outer contact surfaces 21c and 21d are formed, and the inner contact surfaces 11a and 11b and the outer contact surfaces 21c and 21d all extend in parallel with the key arrangement direction.
[0034]
Similarly, the lower surface of the base end 21 of the upper white key unit 20 and the upper surface of the base end 31 of the lower white key unit 30 have a relationship between the rail-shaped fitting portion F2 and the fitting corresponding portion M3. , Are fitted so as to be relatively slidable in the key arrangement direction. That is, inside contact surfaces 21a and 21b are formed below the base end portion 21, and outside contact surfaces 31c and 31d are formed above the base end portion 31, and the inside contact surfaces 21a and 21b and the outside contact surfaces 21a and 21b are formed. Both the contact surfaces 31c and 31d extend parallel to the key arrangement direction.
[0035]
Then, the inner contact surfaces 11a, 11b and the outer contact surfaces 21c, 21d are slidably contacted, and the inner contact surfaces 21a, 21b are slidably contacted with the outer contact surfaces 31c, 31d. I have. As a result, if the base ends 21 and 31 are operated to move, the base ends 21 and 31 are moved relative to the base 11 within a range in which the protrusion 17 can move within the elongated hole 27 or the elongated hole 37. Therefore, it is relatively slidable in the key arrangement direction.
[0036]
However, in the “assembly using the jig 50”, the positions of the base ends 21 and 31 of the white key units 20 and 30 in the key arrangement direction are properly corrected before the laminated keyboard unit is attached to the key frame 40. Therefore, it is not usually necessary to adjust the positions of the base ends 21 and 31 after attaching to the key frame 40.
[0037]
The positional relationship between the base ends 11, 21, and 31 in the front-rear direction is uniquely determined by the fitting between the rail-shaped fitting portions F1, F2 and the fitting corresponding portions M2, M3.
[0038]
Guide rails 41 and 42 are formed on the key frame 40 so that the base end 31 of the lower white key unit 30 is slidably fitted in the key arrangement direction. The guide rails 41 and 42 are provided in a ridge shape, for example, over the entire keyboard width of the present keyboard device (the width of all the plurality of laminated keyboard units). At the rear of the key frame 40, a locking hole 40c is formed corresponding to the locking piece 16 of the black key unit 10, and a rib 40a projects upward from the rear end.
[0039]
In order to attach the laminated keyboard unit, first, the laminated keyboard unit is temporarily placed on the key frame 40 so that the base end 31 of the lower white key unit 30 is tightly fitted between the guide rails 41 and 42. Then, the locking piece 16 is inserted into the locking hole 40c to temporarily fix the laminated keyboard unit. Thereafter, the laminated keyboard unit is attached to the key frame 40 by screwing a screw (not shown) to a boss (not shown) of the key frame 40 through the mounting hole 15. After that, a panel or the like (not shown) is screwed through the mounting hole 14.
[0040]
In the “assembly using the jig 50”, as described above, usually, after the laminated keyboard unit is attached to the key frame 40, the position adjustment of the base ends 21 and 31 is not necessary. Is completed here.
[0041]
Note that, in the present embodiment, when the positions of the base ends 21 and 31 are misaligned for some reason after the laminated keyboard unit is attached to the key frame 40, readjustment is performed. In consideration of the case where assembling is not performed, a “movement adjusting unit” for finely adjusting the individual positions of the base ends 21 and 31 afterward is provided.
[0042]
<Assembly without using jigs>
When the jig 50 is not used, the black key unit 10 is turned upside down and the base ends 21 and 31 of the upper white key unit 20 and the lower white key unit 30 are placed on the base end 11 of the black key unit 10. Are sequentially stacked so that the projection 17 is inserted into the circular holes 28 and 38 and the elongated holes 27 and 37. As a result, the positions of the base ends 21 and 31 with respect to the base end 11 in the key arrangement direction are roughly determined. However, if the gap between the white key body 23 and the white key body 33 adjacent to each other after lamination is not an appropriate value, then, for example, it is necessary to adjust the position after attaching the laminated keyboard unit to the key frame 40. is there.
[0043]
FIG. 6A is a partial rear view of the laminated keyboard unit, in which a key frame 40 is also shown. FIG. 6B is a partial perspective view showing the rear portions of the base ends 21B and 21G of the B key and the G key.
[0044]
As shown in FIGS. 5 and 6A, the rib 40a is extended to a height almost covering the upper white key unit 20. As shown in FIG. 6A, slits 40b (only 40b1 to 40b3 are shown) are provided in the ribs 40a at positions corresponding to between the adjacent base ends 21 and 31 between the white key units 20 and 30. Is formed. Further, taking the B key and the G key as an example, as shown in FIGS. 6A and 6B, a cutout portion 21Bb is formed at the rear upper portion of the base end portion 21B of the B key near the G key. A notch 21Ga is formed at the lower rear portion of the base end 21G of the G key near the B key. The same applies to the other white keys. Although not shown, the notches are formed near the elastic connecting portions 26 and 36 of the base ends 21 and 31.
[0045]
The "movement adjusting means" includes, for example, the slits 40b1 and 40b3, the side surfaces 21Gc and 21Gd of the base end 21G, and the notch 21Bb of the base end 21B of the B key in terms of the base end 21G of the G key. , E-key, the notch 21Ea of the base end 21E and the like.
[0046]
In the laminated keyboard unit in which the positions of the base ends 21 and 31 are not adjusted, the positions of the respective base ends 21 and 31 are adjusted on the key frame 40 as follows. Here, the adjustment of the base end portion 21G of the G key will be described as an example.
[0047]
First, the laminated keyboard unit is temporarily fixed to the key frame 40 through the mounting hole 15 with the screws (not shown) at such a strength that the base ends 21 and 31 can move in the key arrangement direction. The operation of moving the base end portion 21G is usually performed by an operating tool having a thin tip such as a flathead screwdriver. When it is desired to move the base end portion 21G to the right in FIG. 6, a driver is inserted through the slit 40b3, and its tip is applied to the side surface 21Gc, and the left wall of the slit 40b3 in FIG. A rightward force is applied to the base end portion 21G by using or rotating the driver.
[0048]
Here, since the circular hole 28 is larger than the protruding portion 17 and the elongated hole 27 is longer in the key arrangement direction, even after the lamination of the base ends 11, 21 and 31, the base hole 21G is still in contact with the base ends 11 and 31. It does not prevent a slight change in position in the key arrangement direction. Accordingly, the base end portion 21G is slid by sliding between the inner contact surfaces 11a, 11b and the outer contact surfaces 21c, 21d and sliding between the inner contact surfaces 21a, 21b and the outer contact surfaces 31c, 31d. Slides to the right in FIG. The moving amount can be arbitrarily adjusted. At this time, the cutout portion 21Bb plays a role of escape for the driver, so that contact between the driver and the base end portion 21B can be avoided and unexpected movement of the base end portion 21B can be prevented.
[0049]
When it is desired to move the base end 21G to the left in FIG. 6, a driver is inserted through the slit 40b1, and the same operation is performed by changing the direction as described above. The same applies to the individual moving operations of the other base ends 21 and 31.
[0050]
The proper gap between the white key main body 23 and the white key main body 33 is about 1.5 mm. However, in order to ensure bending after molding with a mold, the distance between the base ends 21 of the upper white key unit 20 is reduced. It may have to be adjusted and finally brought close to 0.5 mm. Therefore, in order to eliminate the influence on the adjacent base end portion 21 at the time of the moving operation, it is desirable to use a driver whose tip end portion is as thin as possible and small enough to fit in the notches 21Ga, 21Bb and the like. .
[0051]
After individually adjusting the positions of the base ends 21 and 31 in the key arrangement direction, the base ends 11, 21 and 31 are fixed to the key frame 40 via the mounting holes 15 with the screws (not shown). Doing so completes the installation.
[0052]
According to the present embodiment, when the base end 11 of the black key unit 10 and the base ends 21 and 31 of the white key units 20 and 30 are stacked, the lower surface of the base end 11 and the upper surface of the base end 21 are stacked. , And the lower surface of the base end portion 21 and the upper surface of the base end portion 31 are configured to be slidable in the key arrangement direction, respectively, and the respective base end portions 21, 31 have elastic connection portions 26, 36 having elasticity. Are connected by Therefore, in the “assembly using the jig 50”, the base ends 21 and 31 automatically move to appropriate positions as the white key bodies 23 and 33 are guided by the protruding ribs 53, A laminated keyboard unit in which key positions are appropriately adjusted can be easily obtained.
[0053]
Further, in the “assembly without using the jig 50”, after attaching the laminated keyboard unit to the key frame 40, the individual base ends 21 and 31 can be slid independently in the key arrangement direction. Since the base end 31 of the lower white key unit 30 is slidably fitted between the guide rails 41 and 42, each key position can be easily adjusted individually even after the key unit is attached to the key frame. Can be.
[0054]
Furthermore, since the adjacent base ends 21 and base ends 31 of the white key units 20 and 30 are connected by the elastic connecting portions 26 and 36 having elasticity, each key may be mistaken when stacking the key units. In addition, the keys can be arranged in an appropriate arrangement order, and the keys do not fall apart, and handling is easy. In addition, since the subsequent movement of the base ends 21 and 31 is ensured by the expansion and contraction of the elastic connecting portions 26 and 36, there is no problem in adjusting the individual position of each key.
[0055]
When the key units 10, 20, and 30 are stacked, the protrusions 17 are inserted into the circular holes 28 and 38 and the elongated holes 27 and 37, so that each key unit is temporarily fixed and the stacked keyboard unit is handled. Not only is it easier, but the positions of the base ends 21 and 31 in the key arrangement direction are roughly determined, so that the subsequent fine adjustment work becomes easier. Further, by providing the movement adjusting means, it is easy to finely adjust the individual positions of the respective base ends 21 and 31 afterward.
[0056]
The base end 11 of the black key unit 10 is configured as a common base end corresponding to the plurality of black key bodies 13 and the connection portions 12, and is attached to the key frame 40 after being stacked and fitted with the upper white key unit 20. Thus, since the key unit is configured to be assembled, a single keyboard unit can be easily configured and handled. Furthermore, since the black key body 13 is shorter than the white key bodies 23 and 33 and has less variation in the key arrangement direction, the black key unit 10 functions as a base for organizing the keyboard units, thereby balancing the gap between the white keys. Adjustment becomes easier. Since the black key unit 10 is screwed to the upper white key unit 20 from above the upper white key unit 20, the rigidity of the cantilevered keyboard unit is maintained. That is, in the upper white key unit 20, although the rigidity of each unit of the combination of the base 21, the white key body 23, and the connecting portion 22 is not high, the common of the black key unit 10 is provided above the base 21. By covering the base end portion 11 which is the base end portion, for example, even when the rear portion of the black key body 13 is hit hard, the connection portion 22 and the like are higher than when the upper white key unit 20 is located at the lowest position. Is not easily damaged.
[0057]
Note that the movement adjusting means is not limited to the above-described ones, and when the base ends 21 and 31 are individually driven and moved by a predetermined operation tool, a force fulcrum or a driving fulcrum serving as a fulcrum of the force is used. A reference portion serving as a reference for operation may be provided in a portion separate from the white key units 20 and 30. For example, instead of the slit 40b provided in the key frame 40, a hole may be provided in the rib 40a.
[0058]
Alternatively, instead of the slit 40b, an operation window may be provided in the black key unit 10, as shown in FIG. FIG. 7A is a partial plan view of a laminated keyboard unit showing another example of the movement adjusting means. FIG. 2B is an enlarged view of a portion A in FIG. For example, in the base end portion 11 of the black key unit 10, an operation window 11c is formed at a position corresponding to the base end portions 21B and 21G of the B key and the G key, and the base end portions 21B and 21G are notched. The portions 21Bc and 21Gc are respectively formed as escape portions. The moving operation is the same as in the case of the slit 40b. According to this, when viewed from the conventional model, only the design change of the key units 10, 20, and 30 is required, so that there is also an advantage that the key frame can be utilized without changing the conventional frame.
[0059]
When an operation window for moving the base 31 of the lower white key unit 30 is provided, it is necessary to provide a window of approximately the same size at the corresponding position in the upper white key unit 20 as well. is there.
[0060]
In addition, the shape and position of the notch are not limited as long as the notch functions as a relief for a predetermined operating tool and does not affect other adjacent base ends.
[0061]
In the present embodiment, the elongated holes 27 and 37 have a shape substantially the same as the diameter of the projection 17 and are elongated in the key arrangement direction. However, as shown in FIG. Thus, a deformed elongated hole 50 may be provided. That is, in the deformed elongated hole 50, an enlarged portion 50a having an increased width is formed substantially at the center in the key arrangement direction.
[0062]
When the deformed elongated hole 50 is adopted, the white key units 20 and 30 are stacked on the black key unit 10, and when the projected portion 17 is inserted into the deformed elongated hole 50, the projected portion 17 settles near the enlarged portion 50 a. Is usually the case. It is not frequent that large bending or the like occurs after molding. Therefore, in the case of assembling without using the jig 50, the protrusions 17 are located near the enlarged portion 50 a, so that the base ends 21, 31 where the white key bodies 23, 33 do not bend, etc. In many cases, the initial position where the units are merely stacked is an appropriate position, and the key position adjustment does not need to be actually performed. Therefore, in the case of assembling without using the jig 50, unnecessary adjustment work can be reduced as compared with the case where the elongated holes 27 and 37 are employed.
[0063]
In the present embodiment, the case where the base ends 11 and 21 and the base ends 21 and 31 are in the relationship between the rail-shaped fitting portion and the fitting corresponding portion is illustrated, but the unevenness relationship is reversed. Alternatively, another configuration may be adopted as long as the configuration allows sliding in the key arrangement direction.
[0064]
Note that the upper white key unit 20 and the lower white key unit 30 are configured such that one key unit is connected to each other by the elastic connecting portions 26 and 36 and can be moved in the key arrangement direction in one key unit. Instead, it is also possible to configure so that units of two or more keys are connected by the elastic connecting portions 26 and 36.
[0065]
Although each of the key units 10, 20, and 30 is configured in units of one octave, the number of keys does not matter. Further, as for the white key units 20 and 30, the number of keys constituting an integral key unit (a physically independent key unit not connected by the elastic connecting portions 26 and 36) should be at least one or more. The number of keys does not matter.
[0066]
In this embodiment, the keyboard unit is configured by stacking three key units. However, the number of key units to be stacked is not limited as long as the number of key units is two or more. If it is configured to be slidable in the direction, the position can be adjusted.
[0067]
【The invention's effect】
As described above, according to the present invention, each key can be independently moved in the key arrangement direction in a stacked state, and the position of each key can be individually adjusted afterwards.
[Brief description of the drawings]
FIG. 1 is a plan view of a black key unit applied to a keyboard structure according to an embodiment of the present invention.
FIG. 2 is a perspective view of the black key unit as viewed obliquely from below.
FIG. 3 is a plan view of the upper and lower white key units.
FIG. 4 is an assembly diagram showing a procedure for stacking and positioning each key unit.
FIG. 5 is a partial side view showing the rear part of the laminated keyboard unit attached to the key frame.
FIG. 6 is a partial rear view of the laminated keyboard unit (FIG. 6A) and a partial perspective view showing the rear portions of the base ends of the B key and the G key (FIG. 6B).
FIGS. 7A and 7B are a partial plan view (FIG. 7A) of a laminated keyboard unit showing another example of the movement adjusting means, and an enlarged view (FIG. 7B) of a portion A in FIG.
FIG. 8 is a view showing a modification of a long hole provided at the base end of the white key unit.
[Explanation of symbols]
Reference Signs List 10 black key unit (first key unit), 20 upper white key unit (second key unit), 30 lower white key unit, 11, 21, 31 base end, 12, 22, 32 connection part, 13 black key Main body (key body), 17 protrusion, 23, 33 white key body (key body), 26, 36 elastic connecting part, 27, 37 elongated hole, 40 key frame, 40b slit (part of movement adjusting means), F1 , F2 rail-shaped fitting part (fitting part), M2, M3 fitting part (fitting part)

Claims (5)

A base end portion, at least one key body, and a key body provided corresponding to the key body such that the corresponding key body can be swung in the key pressing and releasing directions and the swing in the key arrangement direction is suppressed. It has first and second key units each integrally formed with a connection portion connected to the base end portion, and the key body of the first key unit and the key body of the second key unit do not overlap. Then, the base end of the first key unit and the base end of the second key unit are stacked, and the stacked base ends are attached to a key frame, thereby assembling the key unit. Keyboard structure configured as follows,
A fitting portion extending in the key arrangement direction is provided at one of the two base ends of the first and second key units, and a fitting corresponding to the fitting portion when the two base ends are stacked. Part is provided on the other of the two base ends, and in a state where the two base ends are stacked and the fitting part and the fitting corresponding part are fitted together, the base part of the second key unit is The first key unit is configured to be slidable relative to the base end of the first key unit in the key arrangement direction, and the second key unit includes a plurality of combinations of the base end, the key body, and the connection unit. A keyboard structure characterized by being arranged side by side and being independently slidable for each combination. 2. The keyboard structure according to claim 1, wherein adjacent base ends of said second key unit are connected by an elastic connecting portion. Movement adjusting means for operating and moving the base end of the second key unit in a state where both base ends of the first and second key units are stacked and finely adjusting the position thereof is provided. 3. The keyboard structure according to claim 1, wherein: The first key unit is a black key unit, and a base end of the black key unit is configured as a common base end corresponding to a plurality of key bodies and a plurality of connecting portions, and the common base of the black key unit is provided. After the end portion and the base end portion of the second key unit are stacked and the fitting portion and the fitting corresponding portion are fitted together, the two base end portions are stacked with respect to the key frame. The keyboard structure according to any one of claims 1 to 3, wherein the key unit is assembled by being attached. The second key unit is configured such that, in a state where both base ends of the stacked first and second key units are temporarily attached to the key frame, the base end of the first key unit and the key frame of the key frame. The keyboard structure according to any one of claims 1 to 4, wherein the keyboard structure is configured to be slidable relative to both in the key arrangement direction.

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