JP2009014817A - Keyboard apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyboard apparatus which is improved in space efficiency and the degree of freedom of mounting. <P>SOLUTION: A key support part 13 of a white key unit has a fitting hole 15 and the key support part of a black key unit has the first screw hole 16. A key mounting part 22A provided on a key frame has a boss 21 projected toward the key support part 13 and the second screw hole 21A imparted on the boss 21. The support part 13 of the white key unit is laid on the key mounting part 22A so that the boss 21 is inserted into the fitting hole 15 of the white key unit. Moreover, the key support part 13 of the black key unit is laid on the key support part 13 of the white key unit, and a screw N is inserted into both of the first screw hole 16 and the second screw hole 21A so as to fix the key support part 13 and the key mounting part 22A. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a keyboard device, and in particular, a key body, a key support portion that supports the key body, and a connection portion that connects the key body to the key support portion so as to be swingable in the direction of pressing and releasing keys are integrated with resin. And a key frame provided with a key attachment portion for fixing the key support portion on an upper surface thereof.

  As the keyboard device described above, one as shown in FIG. 12 has been proposed (for example, Patent Document 1). As shown in the figure, the keyboard device has a white key unit 10 and a black key unit 11 as key units, and a key frame 20. Each of the white key unit 10 and the black key unit 11 includes a key body 12 to be pressed, a key support portion 13 that supports the end of the key body 12 on the side away from the performer in the front-rear direction Y1, and a key. A connecting portion 14 that connects the main body 12 to the key support portion 13 so as to be swingable in the pressing / releasing key direction Y2 is integrally provided with resin.

  Each of the key support portions 13 of the white key unit 10 and the black key unit 11 is provided with a first screw hole 16 into which a screw N for attaching to the key frame 20 is inserted. Further, on the side of the black key unit 11 away from the performer, the key support portion 13 is provided with an arm portion 13A protruding downward, and on the side away from the performer provided at the lower end of the arm portion 13A. And a first engaging portion 13B that protrudes toward the surface.

  The key frame 20 has an upper surface portion 22 and first reinforcing ribs 23. The upper surface portion 22 is provided in a plate shape substantially perpendicular to the pressing / releasing key direction Y2. On the side away from the performer in the front-rear direction Y1 of the upper surface part 22, a key attachment part 22A for fixing the key support part 13 is provided.

  The key attachment portion 22A is provided with a boss 21 protruding downward, and the boss 21 is provided with a second screw hole 21A. A screw groove into which the screw N is screwed is provided in the second screw hole 21A. An insertion hole 29 for inserting the first engagement portion 13B is provided in the upper surface portion 22 on the side farther from the performer than the key attachment portion 22A. The first reinforcing rib 23 is a rib that is provided on the lower side of the upper surface portion 22 and reinforces the fragile key attachment portion 22A by applying force.

  Next, attachment of the white key unit 10 and the black key unit 11 configured as described above to the key frame 20 will be described. First, the key support portions 13 of the two white key units 10 are overlapped so that the first screw holes 16 provided in the key support portion 13 overlap each other. On the upper side, the key support portion 13 of the black key unit 11 is further overlapped so that the first screw holes 16 overlap each other.

  Then, the first engagement portion 13B of the black key unit 11 is inserted into the insertion hole 29 in a state where the key support portions 13 of the two white key units 10 and the key support portions 13 of the one black key unit 11 are overlapped. . As a result, the first engagement portion 13B and the second engagement portion 27A, which is the edge of the insertion hole 29 on the side away from the performer, are engaged, and the white key unit 10 and the black key unit 11 are locked. Temporarily secured to the frame 20. In this temporarily fixed state, the first screw hole 16 provided in the key support portion 13 of the white key unit 10 and the black key unit 11 and the second screw hole 21A provided in the key frame 20 overlap. Next, the screw N is inserted into the first screw hole 16 and screwed into the second screw hole 21A, so that the key support portion 13 of the white key unit 10 and the black key unit 11 is connected to the key attachment portion 22A of the key frame 20. It sticks to.

  However, in the conventional configuration shown in FIG. 12, since the boss 21 protrudes downward from the key attachment portion 22A of the key frame 20, a hammer, a substrate, a cushion, and a speaker are provided below the key attachment portion 22A. When trying to mount such parts, there is a problem that the mounting is restricted, and space efficiency and freedom of mounting are lowered. Further, since the screw N is inserted into the first screw hole 16 and the second screw hole 21A provided in both the key support portion 13 and the key frame 20, it is necessary to use a screw N longer than usual. There was a problem that it was a hindrance to the improvement of production efficiency by sharing N.

  In the conventional configuration shown in FIG. 12, since the first engagement portion 13B protrudes below the key attachment portion 22A, the first engagement portion 13B also reduces the space efficiency and the degree of mounting freedom. There was a problem.

Further, in the conventional configuration shown in FIG. 12, the first reinforcing rib 23 protrudes from the lower side of the key attachment portion 22A. Therefore, the first reinforcing rib 23 also reduces the space efficiency and mounting flexibility. There was a problem that.
Japanese Patent No. 3082696

  In view of the above, the present invention focuses on the above-described problems, and an object thereof is to provide a keyboard device that is improved in space efficiency and mounting flexibility.

  The invention according to claim 1, which has been made in order to solve the above problem, is a keyboard device 100 in which the key support portion 13 of the key unit 10, 11 is fixed to a key attachment portion 22 </ b> A provided in the key frame 20. The key support portion 13 has a first hole 16, and the key attachment portion 22A has a protrusion 21 protruding toward the key support portion 13 and a second hole 21A provided on the protrusion 21. Then, the fixing means N is inserted into both the first hole 16 and the second hole 21A to fix the key support portion 13 and the key attachment portion 22A.

  In the invention according to claim 2, the key frame 20 and the key support portion 13 have engaging portions 13B and 27A that are engaged with each other when the key units 10 and 11 are attached to the key frame 20, respectively. Engagement portions 13B and 27A of the key frame 20 and the key support portion 13 are provided above the key attachment portion 22A.

  A third aspect of the present invention is that a plurality of the key units 10 and 11 are provided side by side in the key arrangement direction Y3, and the key frame 20 includes the key support portion 13 and the key support portion 13 between the key units 10 and 11 adjacent to each other. The reinforcing ribs 24 are disposed in the gaps S generated between the connecting portions 14.

  As described above, according to the first aspect of the present invention, the protrusion that protrudes toward the key support portion is provided in the key attachment portion, and the second hole for inserting the fixing means is provided in the protrusion. The boss does not protrude below the portion, and space efficiency and mounting flexibility can be improved.

  According to the second aspect of the present invention, since the engaging part of the key frame and the key supporting part is provided above the key attaching part, the engaging part of the key supporting part is provided below the key attaching part. Therefore, the space efficiency and the mounting flexibility can be further improved.

  According to the invention described in claim 3, since the reinforcing rib is disposed in the gap formed between the key support portion and the connecting portion between the adjacent key units, the reinforcing rib may protrude below the key attachment portion. Therefore, the space efficiency and the degree of freedom of mounting can be further improved.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a first embodiment of a keyboard device 100 of the present invention. FIG. 2 is a top view of the keyboard device 100 shown in FIG. 1 with the panel 30 removed. FIG. 3 is a partial enlarged view of the vicinity of the key support portion 13 and the key attachment portion 22A of the keyboard device 100 shown in FIG.

  The keyboard device 100 is, for example, an electronic keyboard instrument, and includes a white key unit 10 and a black key unit 11 as key units, a key frame 20 formed of, for example, a hard synthetic resin, and a hammer unit 40. A panel 30 is provided above and behind the keyboard device 100.

  Each of the white key unit 10 and the black key unit 11 includes a key body 12 on which a key pressing operation is performed, and a key support portion 13 that supports the side of the key body 12 away from the performer in the front-rear direction Y1 (key rear). A connecting portion 14 that connects the key body 12 to the key supporting portion 13 so as to be swingable in the pressing / releasing key direction Y2 is integrally provided with resin.

  The key body 12 is provided with a stopper projection 12G at the rear end. The stopper projection 12G is provided to prevent the hinge-type connecting portion 14 from being broken when the key body 12 is pressed with force or an infant rides on the key body 12. As shown in FIG. 2, the key support portion 13 is provided in a long shape, the longitudinal direction thereof is provided along the key arrangement direction Y3, and the key common base in which the key units 10 and 11 are supported in common. It is provided as an end. As shown in FIG. 3, each key support portion 13 is provided with a positioning convex portion 13C on the upper side and a positioning concave portion 13D on the lower side. The positioning convex portion 13C and the positioning concave portion 13D are arranged so that the positioning convex portion 13C of the lower key support portion 13 is positioned in the positioning concave portion of the upper key support portion 13 when the plurality of key support portions 13 are overlapped in the pressing / releasing key direction Y2. It is provided to be fitted in 13D. The positioning of the key support portions 13 can be easily performed by the positioning convex portions 13C and the positioning concave portions 13D. As shown in FIG. 1, the connecting portion 14 is provided between the key body 12 and the key support portion 13, is thin and has elasticity, and forms a so-called hinge structure.

  The keyboard device 100 is provided with two white key units 10 and one black key unit 11 for each octave. In one of the two white key units 10, three key bodies 12 of sounds D, F, and A are supported by one key support portion 13. In the remaining one of the two white key units 10, four key bodies 12 of C, E, G, and B sounds are supported by one key support portion 13. In the black key unit 11, five key bodies 12 of C #, D #, F #, G #, and A # are supported by one key support portion 13.

  The two white key units 10 and one black key unit 11 have their key support portions 13 overlapped with each other in the pressing / releasing key direction Y2 to form a one-octave keyboard. A plurality of one-octave keyboards are arranged in the key arrangement direction Y3. Further, in the key body 12 for the C sound and the B sound, a gap S generated between the key support portion 13 and the connection portion 14 of the white key units 10 and 10 adjacent in the key arrangement direction Y3 is provided on the player side in the front-rear direction Y1. Notches 12E and 12F are provided for extending the length. The key support portion 13, the connection portion 14, and the cutout portions 12E and 12F are covered with a panel 30 provided on the upper side so that they cannot be seen from the front.

  As shown in FIG. 3, each of the white key units 10 is provided with a fitting hole 15 into which a boss 21 described later provided in the key frame 20 is fitted. On the other hand, the black key unit 11 is provided with a first screw hole 16 into which a screw N as a fixing means smaller than the fitting hole 15 is inserted. Either or both of the fitting hole 15 and the screw hole 16 correspond to the first hole according to claim 1.

  The key frame 20 is attached to a lower case (not shown). Alternatively, the frame 20 itself may constitute the lower case. The key frame 20 includes an upper surface portion 22, a first reinforcing rib 23 integrally formed in the front-rear direction Y1 below the upper surface portion 22, a second reinforcing rib 24 formed above the upper surface portion 22, The front portion 25 and the third reinforcing rib 26 are integrally provided with resin. The upper surface portion 22 is provided in a plate shape substantially perpendicular to the key pressing / releasing direction Y2, and is disposed on the side away from the performer in the front / rear direction Y1 and above the key pressing / releasing direction Y2. The upper surface portion 22 is provided in a tapered shape that approaches the lower side as it approaches the player side in the front-rear direction Y1.

  On the side away from the performer in the front-rear direction Y1 of the upper surface part 22, a key attachment part 22A for fixing the key support part 13 is provided. As shown in FIG. 3, the key attachment portion 22A is provided with a positioning convex portion 22B and a boss 21 provided on the positioning convex portion 22B. The positioning convex portion 22B is provided so as to be fitted into the positioning concave portion 13D of the key support portion 13 when the key support portion 13 is overlapped on the key attachment portion 22A. Positioning of the key support portion 13 with respect to the key attachment portion 22A can be easily performed by the positioning convex portion 22B and the positioning concave portion 13D.

  The boss 21 described above is provided so as to protrude toward the upper side of the key attaching / detaching key direction Y2 of the key attachment portion 22A, that is, toward the key support portion 13. The boss 21 is provided with a second screw hole 21A as a second hole into which a screw N described later is inserted. A screw groove into which the screw N is screwed is provided in the second screw hole 21A.

  The lower surface of the key attachment portion 22A has a concave groove 221 in the key arrangement direction Y3 and is provided in a planar shape. An aftertouch sensor 60 is provided on the lower surface of the key attachment portion 22A. The after-touch sensor 60 is a sensor that detects a pressing force when the key body 12 is further pressed after a normal key pressing, and includes a resistor substrate provided with a resistor pattern whose resistance value changes according to the pressure. The conductive substrate provided with the conductive pattern connected to the resistor pattern and the felt are configured to overlap each other in this order. The sensor 60 detects pressure contact when the mass body 41 of the hammer unit 40 contacts when the key is pressed.

  The first reinforcing rib 23 supports the lower side of the upper surface portion 22 in the pressing / releasing key direction Y2 and reinforces the upper surface portion 22. The first reinforcing ribs 23 are provided in a plate shape substantially perpendicular to the key arrangement direction Y3, and a plurality of (for example, between B and C keys) are arranged along the key arrangement direction Y3.

  The second reinforcing rib 24 is a reinforcing rib for reinforcing the upper surface portion 22. As shown in FIG. 2, the second reinforcing rib 24 has an upper surface so as to be disposed in a gap S formed between the key support portion 13, the connection portion 14, and the key body 12 between the adjacent white key units 10 and 10. It protrudes from the portion 22 toward the upper side in the key pressing / releasing direction Y2. The second reinforcing ribs 24 are provided in a plate shape substantially perpendicular to the key arranging direction Y3, and a plurality of second reinforcing ribs 24 are arranged along the key arranging direction Y3.

  The front portion 25 is provided on the player side in the front-rear direction Y1 and below the key release / release key direction Y2, and has an uneven cross section. The third reinforcing rib 26 reinforces the front portion 25. The third reinforcing ribs 26 are provided in a plate shape substantially perpendicular to the key arranging direction Y3, and a plurality of third reinforcing ribs 26 are arranged along the key arranging direction Y3.

  As shown in FIG. 1, the hammer unit 40 includes a mass body 41 extending in the front-rear direction Y1 and a base portion 42 that holds an end portion of the mass body 41, and the key frame 20 with the shaft 42A of the base portion 42 as a fulcrum. Is pivotally supported by a fulcrum support portion 29A provided above the central convex portion 29. Further, a connecting piece 42B that is bifurcated up and down is formed at the tip of the base 42, and a connecting plate 12B provided at the lower end of the action part 12A that protrudes downward from the key body 12 is a connecting piece 42B. Are fitted and connected.

  Then, the action portion 12A pushes down the base portion 42 when the key is pressed, the hammer unit 40 turns counterclockwise in FIG. 1 around the shaft 42A, and the action portion 12A pushes up the base portion 42 when the key is released. 40 rotates in the clockwise direction in FIG. 1 with the shaft 42A as the center of rotation. This realizes a touch feeling like an acoustic piano. The key frame 20 has stoppers SD and SU such as felt attached to the rear lower end and the rear upper end, and the rotation range of the hammer unit 40 is described by the stoppers SD and SU.

  Further, a substrate 50 is disposed between the white key unit 10 and the black key unit 11 and the hammer unit 40, and a key switch that is turned on / off by pressing and releasing the key body 12 on the upper side of the substrate 50. 50A is installed.

  Next, attachment of the key units 10 and 11 to the key frame 20 in the keyboard device 100 having the above-described configuration will be described. First, a boss 21 provided on the key frame 20 is composed of a white key unit 10 composed of four key bodies 12 for C, E, G, and B sounds and three key bodies 12 for D, F, and A. The fitting hole 15 provided in the key support part 13 of the white key unit 10 is fitted in this order.

  At this time, as shown in FIG. 3, the positioning convex portion 22B provided in the key attachment portion 22A is fitted into the positioning concave portion 13D provided in the key support portion 13 of the lower white key unit 10, and the upper white key unit The positioning convex part 13C provided in the key supporting part 13 of the lower white key unit 10 is fitted into the positioning concave part 13D provided in the ten key supporting parts 13 to position the white key unit 10 on the key attaching part 22A.

  Further, the key support portion of the white key unit 10 is fitted so that the positioning convex portion 13C provided on the key support portion 13 of the upper white key unit 10 is fitted into the positioning recess 13D provided on the key support portion 13 of the black key unit 11. The key support portion 13 of the black key unit 11 is superposed on the upper side of 13. At this time, the second screw hole 21A provided in the boss 21 and the first screw hole 16 provided in the black key unit 11 overlap. Next, the screw N is inserted into both the first screw hole 16 and the second screw hole 21A, and the key support portion 13 and the key attachment portion 22A are fixed.

  According to the keyboard device 100 described above, the key support portion 13 has the first screw hole 16, and the key attachment portion 22A is provided on the boss 21 and the boss 21 protruding toward the key support portion 13. Since it has the 2nd screw hole 21A, screw N is inserted in both the 1st screw hole 16 and the 2nd screw hole 21A, and key support part 13 and key attachment part 22A are fixed, The boss 21 does not protrude on the lower side, and space efficiency and mounting flexibility can be improved. Specifically, since the boss 21 does not protrude below the key attachment portion 22A, the lower surface of the key attachment portion 22A can be made flat. For example, as shown in FIG. It can be disposed on the lower surface of the mounting portion 22A.

  Further, since the boss 21 does not protrude below the key attachment portion 22A, when the mass body 41 is disposed below the key attachment portion 22A as shown in FIG. The swing range of the mass body 41 can be increased without restricting the swing range of the mass body 41. That is, the position of the shaft 42A (fulcrum) of the hammer unit 40 can be made closer to the player side than in the past with respect to the same key stroke as that in the past (a constant vertical movement range of the operating point). More specifically, the ratio of the length from the shaft 42A to the rear end of the hammer unit 40 and the length from the shaft 42A to the action point can be increased. Thereby, even if the mass body 41 is lightened, a large mass feeling (feeling of touching) at the time of key pressing can be obtained, and the keyboard device 100 with the mass body 41 can be lightened.

  Further, according to the keyboard device 100 described above, as shown in FIG. 3, the key support portion 13 of the white key unit 10 is provided with the fitting hole 15 that fits into the boss 21, and the key of the white key unit 10. The support portion 13 is sandwiched and fixed between the key attachment portion 22A and the key support portion 13 of the black key unit 11. As a result, the white key unit 10 can be easily positioned with respect to the key frame 20 simply by inserting the fitting hole 15 into the boss 21, thereby facilitating the mounting operation. The positioning is preferably performed in the previous step for aligning the three key units 10 and 11 with respect to the key arrangement direction Y3 and fixing them to the key frame 20. This is because the positioning in the front-rear direction Y1 is performed by the positioning convex portion 13D and the positioning concave portion 13E. Alternatively, this positioning may be entrusted to the boss 21 and the fitting hole 15 in both the front-rear direction Y1 and the key arrangement direction Y3 by providing a clearance for fitting the positioning convex portion 13D and the positioning concave portion 13E. . Furthermore, since the length of the screw N can be shortened, the screw N can be made common and the production efficiency can be improved. Further, when the key frame 20 is used as a musical instrument case as it is, the boss 21 which has been a difficult point in the past can be hidden by the key support portion 13, so that the shape is neat and the freedom of design is improved. be able to.

  Further, according to the keyboard device 100 described above, the second reinforcing ribs 24 are disposed in the gap S generated between the key support portion 13 and the connecting portion 14 between the adjacent white key units 10 and 10, so that the second reinforcing rib 24 is provided. The rib 24 does not protrude below the key attachment portion 22A. For this reason, since the second reinforcing rib 24 does not protrude below the key attachment portion 22A, the aftertouch sensor 60 can be provided, or the rocking range of the mass body 41 can be increased. The space below the portion 22A can be used effectively.

  Further, according to the keyboard device 100 described above, the notches 12E and 12F are provided in the portion covered with the panel 30 of the key body 12, and the gap S is extended to the player side in the front-rear direction Y1, thereby providing the second Since the reinforcing rib 24 is provided so as to be disposed also in the gap S provided by the notches 12E and 12F, the second reinforcing rib 24 can be enlarged, and the reinforcement of the key attachment portion 22A is further strengthened. can do.

  In the first embodiment described above, a plurality of key bodies 12 are provided for one key support portion 13, but the present invention is not limited to this. For example, as shown in FIG. 4, it is conceivable to apply to one in which one key body 12 is provided for one key support portion 13. Also in this case, the second reinforcing ribs 24 can be arranged in the gaps S generated between the key support portion 13 between the white key units 10 and 10 adjacent in the key arrangement direction Y3, the connection portion 14, and the key body 12.

  In the first embodiment described above, the second reinforcing rib 24 is not provided on the lower side of the key body 12, but the present invention is not limited to this. For example, as shown in FIG. 5, a second reinforcing rib 24 may be provided on the lower side of the key body 12 to further strengthen the key attachment portion 22A.

  Further, in the first embodiment described above, the key body 12 is provided with the notches 12E and 12F, and the second reinforcing ribs 24 are also disposed in the gaps S generated by the notches 12E and 12F. It is not limited to. If there is no problem in the strength of the key attachment portion 22A, as shown in FIGS. 6 and 7, only the gap S generated between the key support portion 13 and the connection portion 14 without providing the key body 12 with the notches 12E and 12F. The second reinforcing ribs 24 may be arranged on the front.

  In the first embodiment described above, the second reinforcing ribs 24 are arranged in the gaps S generated between the key support portion 13 between the white key units 10 and 10 adjacent in the key arrangement direction Y3, the connection portion 14, and the key body 12. However, the present invention is not limited to this. For example, as shown in FIG. 8, it is conceivable to provide the second reinforcing rib 24 on the side farther from the player in the front-rear direction Y1 than the key attachment portion 22A of the upper surface portion 22. However, in this case, the stopper SD is provided below the second reinforcing rib 24.

  In the first embodiment described above, the space below the key attachment portion 22A is effectively used by providing the aftertouch sensor 60 or the mass body 41 below the key attachment portion 22A. However, the present invention is not limited to this. For example, as in a second embodiment to be described later, various functional components such as a speaker SP may be arranged below the key attachment portion 22A to effectively use the space below the key attachment portion 22A.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a cross-sectional view showing a second embodiment of the keyboard device 100 of the present invention. FIG. 10A is a partial top view of the black key unit 11 constituting the keyboard device 100 shown in FIG. 9, and FIG. 10B shows the black key unit 11 constituting the keyboard device 100 shown in FIG. 3 is a partial top view of the key frame 20. FIG. 9 and 10, the same parts as those of the keyboard device 100 described in the first embodiment described above with reference to FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The keyboard device 100 includes a white key unit 10 and a black key unit 11, and a key frame 20. The second embodiment is greatly different from the first embodiment in that the hammer unit 40 is not provided. In the white key unit 10 and the black key unit 11, as in the first embodiment, the key body 12, the key support portion 13, and the connection portion 14 are integrally provided with resin. In addition, the connection part 14 in this 2nd Embodiment is comprised by 14 A of horizontal wide parts wider than the key main body 12, and a pair of flat thin hinge parts 14B connected to the both ends of this wide part 14A. The other ends of the pair of thin hinge portions 14B are connected to the key support portion 13. As a result, the key body 12 is restricted from swinging in the left-right direction, and the key body 12 can swing up and down at a fixed position as if there is a key guide without a so-called key guide. In FIG. 10, for easy understanding of the drawing, the structure of the connection portion 14 is shown only for one white key unit 10, but the same applies to the other white key units 10 and black key units 11.

  The key body 12 has a leg portion 12C protruding downward in the pressing / releasing key direction Y2 and a side away from the performer in the front-rear direction Y1 provided at the end of the leg portion 12C below the pressing / releasing key direction Y2. A stopper piece 12D that protrudes toward the center is provided. When the key body 12 is depressed, the lower side of the leg portion 12C contacts the stopper member SD (felt or the like) provided on the key frame 20, and when the key body 12 is released, the upper side of the stopper piece 12D is provided on the key frame 20. The swing range of the key body 12 is restricted by contacting the member SU.

  The key support portion 13 of the black key unit 11 is an arm portion 13A protruding toward the lower side of the key release direction Y2 provided at the end of the player side in the front-rear direction Y1 (see FIG. 10A). And a first engaging portion 13B as an engaging portion that protrudes toward the performer side in the front-rear direction Y1 provided at the lower end of the pressing / releasing key direction Y2 of the arm portion 13A. . The arm portion 13A and the first engagement portion 13B are provided on the key support portion 13 that is stacked on the top of the key support portions 13 of the plurality of key units 10 and 11 that are attached to each other on the key attachment portion 22A. It has been. The arm portion 13A is such that the lower end of the key pressing direction Y2 is the upper end portion 22 with the key support portion 13 of the black key unit 11 superimposed on the upper side of the key support portion 13 of the two white key units 10. It is provided so as to be positioned above the key attachment portion 22A (see FIG. 9).

  In the key frame 20, the upper surface part 22, the first reinforcing rib 23, the front part 25, the third reinforcing rib 26, the rear wall part 27, and the board attaching part 28 are integrally provided with resin. . Since the upper surface portion 22, the front portion 25, and the third reinforcing rib 26 are substantially the same as those in the first embodiment, detailed description thereof is omitted here. The first reinforcing rib 23 is provided below the upper surface portion 22 and the board attaching portion 28 in the pressing / releasing key direction Y2, and reinforces them.

  The rear wall portion 27 is provided in a plate shape substantially perpendicular to the front-rear direction Y1, and is provided on the side of the upper surface portion 22 away from the performer in the front-rear direction Y1. Further, the portion 271 of the rear wall portion 27 that faces the first engagement portion 13B protrudes upward from the key attachment portion 22A in which the upper end portion in the pressing / releasing key direction Y2 slightly protrudes from the upper surface portion 22. The upper end portion is provided with a second engagement portion 27A as an engagement portion protruding toward the player side in the front-rear direction Y1. In addition, a hole 22C for avoiding an undercut of the second engagement portion 27A is provided in a portion of the upper surface portion 22 facing the second engagement portion 27A. The hole 22C also acts so that the upper surface portion 22 and the first engagement portion 13B do not interfere when the first engagement portion 13B and the second engagement portion 27A are engaged. The arm part 13A and the first engaging part 13B of the black key unit 11 are provided at two positions corresponding to the C # key and the A # key with respect to one key unit for one octave, and the key frame 20 side. The second engaging portion 27A is also provided at a position corresponding to the first engaging portion 13B. In the embodiment shown in FIG. 9, the second engagement portion 27 </ b> A with which the first engagement portion 13 </ b> B engages is formed with a contact piece protruding from the rear wall portion 27 so that the contact pieces are brought into contact with each other. However, the present invention is not limited to this. For example, as shown in FIG. 11, the second engaging portion 27A is formed as an engaging portion having a through hole 27A1, and the first engaging portion 13B formed in the press-fitting structure is press-fitted into the through hole 27A1. Also good. The press-fitting structure of the first engaging portion 13A is a structure that can be press-fitted into a through hole 27A1 provided in the second engaging portion 27A. In the embodiment shown in FIG. The taper which becomes thin as it goes to is provided. In the embodiment shown in FIG. 11, the through hole 27A1 is provided in the second engagement portion 27A, but a recess is provided instead of the through hole 27A1, and the first engagement portion 13A is press-fitted into the recess. You may do it.

  The board attachment portion 28 is provided between the upper surface portion 22 and the front portion 25. The board attachment portion 28 is provided below the upper surface portion 22, and the board 50 on which the key switch 50A is mounted is attached.

  Next, attachment of the key units 10 and 11 to the key frame 20 in the keyboard device 100 having the above-described configuration will be described. First, the fitting holes 15 provided in the key support portions 13 of the two white key units 10 are inserted in this order into the bosses 21 provided in the key frame 20. The black key unit 11 is attached to the key frame 20 by engaging the first engagement portion 13B provided on the key support portion 13 of the black key unit 11 and the second engagement portion 27A provided on the rear wall portion 27. Temporarily fix. In this temporarily fixed state, the first screw hole 16 provided in the key support portion 13 of the black key unit 11 and the second screw hole 21A provided in the boss 21 overlap. Next, the screw N is inserted into both the first screw hole 16 and the second screw hole 21 </ b> A, and the key units 10 and 11 are fixed to the key frame 20.

  According to the second embodiment described above, the first engagement portion 13B provided on the key support portion 13 and the second engagement portion 27A provided on the key frame 20 are provided above the key attachment portion 22A. Therefore, the first engagement portion 13B of the key support portion 13 is not positioned below the key attachment portion 22A. For this reason, since the 1st engagement part 13B does not protrude below key attachment part 22A, various functional parts, such as speaker SP, can be arranged below key attachment part 22A.

  Further, according to the second embodiment described above, the black key unit 11 is engaged by engaging the first engaging portion 13B provided in the key support portion 13 and the second engaging portion 27A provided in the key frame 20. The key frame 20 can be temporarily fixed, and the attachment work can be easily performed.

  In the second embodiment described above, various functional parts such as the speaker SP are arranged below the key attachment portion 22A, and the space below the key attachment portion 22A is effectively used. It is not limited to this. For example, as in the first embodiment, the after-touch sensor 60 and the mass body 41 may be provided below the key attachment portion 22A so that the space below the key attachment portion 22A can be used effectively.

  Further, in the first and second embodiments described above, the fitting hole 15 is provided in the key support portion 13 of the white key unit 10 and the boss 21 is fitted in the fitting hole 15. It is not limited to. For example, as shown in FIG. 11, screw insertion holes (buckle holes) 16 ′ are provided in the key support portion 13, and the two white key units 10 and the black key unit 11 are arranged on the boss 21 as shown in the figure. The screw N may be inserted into the screw insertion hole 16 ′ in order, and screwed into the screw hole 21A to be fixed to the key attachment portion 22A. In this case, the positioning of the key units 10 and 11 with respect to the key frame 20 is a projection of the through hole 27A1 and the first engaging portion 13B.

  In the first and second embodiments, the screw N is used as the fixing means, but the present invention is not limited to this. For example, as the fixing means, the key support portion is press-fitted into both the first hole (first screw hole) provided in the key support portion 13 and the second hole (second screw hole) provided in the key attachment portion 22A. 13 and the key attachment portion 22A may be fixed.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

It is sectional drawing which shows 1st Embodiment of the keyboard apparatus of this invention. FIG. 2 is a top view of the keyboard device shown in FIG. 1 with a panel removed. It is the elements on larger scale near the key support part and key attachment part of the keyboard apparatus shown in FIG. It is a top view in the state where the panel of the keyboard device in other embodiments was removed. It is a fragmentary sectional view of the keyboard device in other embodiments. It is a top view in the state where the panel of the keyboard device in other embodiments was removed. It is a top view in the state where the panel of the keyboard device in other embodiments was removed. It is sectional drawing of the keyboard apparatus in other embodiment. It is sectional drawing which shows 2nd Embodiment of the keyboard apparatus of this invention. (A) is a partial top view of the black key unit 11 constituting the keyboard device shown in FIG. 9, and (B) is a partial top view of the black key unit and the key frame constituting the keyboard device shown in FIG. It is the elements on larger scale near the key support part and key attachment part of the keyboard apparatus in other embodiment. It is a fragmentary sectional view showing an example of the conventional keyboard device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... White key unit (key unit), 11 ... Black key unit (key unit), 12 ... Key body, 13 ... Key support part, 13B ... 1st engaging part (engaging part), 14 ... Connection part, 16 ... 1st screw hole (1st hole), 20 ... Key frame, 21 ... Boss (projection), 21A ... 2nd screw hole (2nd hole), 22 ... Upper surface part (key frame), 22A ... Key attachment part, 24 ... 2nd reinforcing rib (reinforcing rib), 27A ... 2nd engaging part (engaging part), 100 ... Keyboard device, N ... Screw (adhering means), S ... Gap, Y2 ... Key release key direction, Y3 ... Key arrangement direction

Claims (3)

A key unit in which a key body, a key support part for supporting the key body, and a connection part for connecting the key body to the key support part so as to be swingable in the direction of pushing and releasing keys are integrally provided with resin; In a keyboard device provided with a key frame provided with a key attachment portion for fixing the key support portion,
The key support has a first hole;
The key attachment portion has a protrusion protruding toward the key support portion provided on the upper surface, and a second hole provided on the protrusion;
A keyboard device, wherein a fixing means is inserted into both the first hole and the second hole to fix the key support part and the key attachment part. The key frame and the key support part each have an engaging part that engages with each other when the key unit is attached to the key frame,
The keyboard apparatus according to claim 1, wherein an engagement portion between the key frame and the key support portion is provided above the key attachment portion. A plurality of the key units are provided side by side in the key arrangement direction,
The keyboard device according to claim 1, wherein the key frame has a reinforcing rib disposed in a gap formed between the key support portion and the connection portion between the key units adjacent to each other.

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