JP6331085B2 - Action mechanism of keyboard device and keyboard instrument - Google Patents

Description

  The present invention relates to an action mechanism of a keyboard apparatus such as a piano and a keyboard instrument including the same.

  For example, in an action mechanism of a keyboard device, as described in Patent Document 1, a pen that is rotated by a key pressing operation, a jack that is driven according to the rotation of the pen, and a jack that is driven by the jack. And a hammer member that strikes a string, and these are provided corresponding to each of a plurality of keys.

JP 2002-258835 A

  Such an action mechanism of the keyboard device includes a wiper rail and a hammer rail that are beamed over the entire length in the arrangement direction of a plurality of keys. A plurality of uipen holders are attached to the wipen rail corresponding to each of the plurality of keys, and a plurality of uipens are rotatably attached to these uipen holders by pins.

  In addition, a plurality of hammer holding portions are attached to the hammer rails corresponding to the plurality of wipers, and each of the shanks of the plurality of hammer members is rotatably attached to the hammer holding portions by pins. Yes.

  In such an action mechanism of the keyboard device, since the hammer member must be individually attached to the hammer holding portion with the pin, when attaching the plurality of hammer members to the hammer rail, a plurality of hammer members are attached according to the attachment procedure of the plurality of hammer members. The hammer holders must be attached to the hammer rail in turn. For this reason, there are problems that the number of parts is large, the assembly work is complicated and troublesome, the productivity is poor, and the cost cannot be reduced.

  Moreover, in the action mechanism of this keyboard apparatus, since it is necessary to individually attach the uipen to the wipen holder by means of a pin, when attaching a plurality of uipens to the wipen rail, a plurality of uipen holders according to the installation procedure of the plurality of uipens. Must be attached individually to the Wipenrail in order. For this reason, there are problems that the number of parts is large, the assembly work is complicated and troublesome, the productivity is poor, and the cost cannot be reduced.

According to the present invention is to provide a set look freshly workability and working to improve productivity, the action mechanism of the keyboard apparatus can be satisfactorily retain the rotating operation members and keyboard instrument including the same.

One embodiment of the invention, that holds a plurality of keys arranged in parallel, a plurality of hammer member for applying an action load to the key being pressed key operation, the plurality of hammer members and c Nma holding member, wherein is inserted into the hammer holding member, and the action of the keyboard apparatus in which the plurality of hammer members is characterized in that it and a hammer holding shaft Ru Tei mounted for rotational movement Mechanism.

In one embodiment of the present invention , a plurality of keys arranged in parallel and a plurality of transmissions arranged corresponding to each of the plurality of keys and rotating in response to a key pressing operation of each of the plurality of keys. and the member, before SL and transmitting holding member for holding a plurality of transmission members are inserted into the transmission holding member, and each of the plurality of transmission member and rotate operatively attached Tei Ru transmitted holding shaft, a It is the action mechanism of the keyboard apparatus characterized by having.

According to the present invention, it aims to set viewing stand workability and improved productivity can be favorably hold the hammer member for rotational movement.

According to the present invention, it aims to set viewing stand workability and improved productivity can be favorably hold the transmission member for rotational movement.

It is the top view which showed the keyboard apparatus in 1st Embodiment which applied this invention to the electronic keyboard instrument. It is an enlarged side view in the AA arrow of the keyboard apparatus shown by FIG. FIG. 3 is an enlarged side view showing a state in which transmission support rails and hammer support rails are arranged on a plurality of support members over the entire length in the key arrangement direction in the keyboard device shown in FIG. 2. FIG. 4 is an enlarged perspective view showing a support member shown in FIG. 3. FIG. 2 shows a part of the transmission holding member and the transmission member shown in FIG. 2, (a) is an enlarged plan view thereof, and (b) is an enlarged sectional view taken along the line BB. The transmission holding member and the transmission member shown in FIG. 2 are shown, (a) is an enlarged side view thereof, and (b) is an enlarged bottom view of the transmission member. FIG. 3 is an enlarged side view showing a state in which a transmission member is attached to the transmission holding member shown in FIG. FIG. 2 shows a part of the hammer holding member and the hammer member shown in FIG. 2, (a) is an enlarged plan view thereof, and (b) is an enlarged sectional view taken along the CC arrow thereof. It is the expanded side view which showed the hammer holding member and hammer member which were shown by Fig.8 (a). FIG. 3 is an enlarged side view showing a state in which a hammer member is attached to the hammer holding member shown in FIG. 2 and arranged on the upper side of a transmission member. In 2nd Embodiment which applied this invention to the electronic keyboard musical instrument, it is the expansion perspective view which showed the hammer holding member. FIG. 12 is an enlarged plan view of the hammer holding member shown in FIG. 11. 12 shows each side surface of the hammer holding member shown in FIG. 12, (a) is an enlarged side view showing the left side, (b) is an enlarged side view showing the right side, and (c) is the DD arrow. (D) is an enlarged sectional view in the EE arrow direction. In 2nd Embodiment which applied this invention to the electronic keyboard musical instrument, it is an enlarged plan view of the principal part which showed the transmission holding member. 14 shows each side surface of the transmission holding member shown in FIG. 14, (a) is an enlarged side view showing the upper side, (b) is an enlarged side view showing the lower side, and (c) is F- The expanded sectional view in F arrow, (d) is the expanded sectional view in the GG arrow.

(First embodiment)
A first embodiment in which the present invention is applied to an electronic keyboard instrument will be described below with reference to FIGS.
As shown in FIGS. 1 and 2, the electronic keyboard instrument includes a keyboard device 1. The keyboard device 1 is incorporated in a musical instrument case (not shown). The keyboard device 1 includes a plurality of keys 2 arranged in parallel, and an action mechanism 3 that applies an action load to each key 2 in response to a key pressing operation of the plurality of keys 2.

  As shown in FIGS. 1 and 2, each of the plurality of keys 2 includes a white key 2a and a black key 2b. For example, 88 white keys 2a and black keys 2b are arranged in parallel. The plurality of keys 2 are supported so that their intermediate portions in the front-rear direction (left-right direction in FIG. 2) are rotatable in the vertical direction by the balance pins 4a, 4b, respectively, and are arranged in parallel on the base plate 5 in this state. ing.

  In this case, as shown in FIG. 2, cushion materials 6a and 6b on which the lower surfaces of the front end portions (the right end portion in FIG. 2) of the plurality of keys 2 come into contact with and separate from each other are provided on the base plate 5. 2 along the direction of arrangement. Also, on the base plate 5, cushion materials 7 are provided along the arrangement direction of the keys 2 so that the lower surfaces of the rear end portions (left end portions in FIG. 2) of the plurality of keys 2 come into contact with each other. It has been. Further, guide pins 8a and 8b are provided on the base plate 5 so as to stand upright to prevent the plurality of keys 2 from swinging in the arrangement direction.

  As shown in FIGS. 1 and 2, the action mechanism 3 includes a plurality of transmission members 10 that rotate in the vertical direction in response to a key pressing operation of each of the plurality of keys 2, and each rotation of the plurality of transmission members 10. A plurality of hammer members 11 that respectively rotate in the vertical direction according to the operation and apply an action load to each of the plurality of keys 2.

  In addition, as shown in FIG. 2, the action mechanism 3 includes a transmission holding member in which a plurality of transmission holding portions 13 that hold the plurality of transmission members 10 in a rotatable manner are integrally formed along the arrangement direction of the keys 2. 12 and a hammer holding member 14 in which a plurality of hammer holding portions 15 that hold the plurality of hammer members 11 rotatably are integrally formed along the arrangement direction of the keys 2.

  In this case, the transmission holding member 12 is mounted on a transmission support rail 17 arranged along the arrangement direction of the keys 2 as shown in FIGS. 2 and 3. The hammer holding member 14 is mounted on a hammer support rail 18 arranged along the arrangement direction of the keys 2. The transmission support rail 17 and the hammer support rail 18 are supported by a plurality of support members 20 and are disposed above the plurality of keys 2.

  As shown in FIGS. 1 to 3, the plurality of support members 20 are erected and mounted on the base plate 5 in a state where the plurality of support members 20 are located at a plurality of predetermined positions in the entire length in the arrangement direction of the keys 2. . In this case, for example, a total of 88 keys 2 are arranged. In response to this, the plurality of support members 20 are arranged at both ends in the arrangement direction of the plurality of keys 2 and between, for example, the three keys 2 positioned for each of the 20 keys 2. . In other words, in this embodiment, the support members 20 are arranged at five positions in the entire length in the arrangement direction of the keys 2.

  The support member 20 is made of a hard synthetic resin such as ABS resin, and as shown in FIGS. 3 and 4, is integrally formed on the attachment portion 20a and the attachment portion 20a attached on the base plate 5. And a bridge portion 20b. Accordingly, the support member 20 is configured to be disposed between the rear portions of the plurality of keys 2 in a state where the bridge portion 20b protrudes above the key 2 by attaching the attachment portion 20a on the base plate 5. Has been.

  In this case, a rear rail support for supporting the transmission support rail 17 is provided on the rear end lower portion of the bridge portion 20b, that is, on the rear upper portion (left upper portion in FIG. 3), as shown in FIGS. A portion 20c is provided. In addition, a front rail support portion 20d that supports the hammer support rail 18 is provided at the front upper portion (the upper right portion in FIG. 3) of the bridge portion 20b. Furthermore, a stopper rail support portion 20e is provided on the rear upper portion (left upper portion in FIG. 3) of the bridge portion 20b, and a substrate rail support portion 20f is provided on the upper portion of the bridge portion 20b.

  As shown in FIGS. 2 and 3, the transmission support rail 17 is formed in a rectangular tube shape having a rectangular cross section, and has a length extending over the entire length in the arrangement direction of the plurality of keys 2. The transmission support rail 17 is configured such that a predetermined portion in the arrangement direction of the keys 2 is attached on each rear rail support portion 20 c of the plurality of support members 20.

  As shown in FIGS. 2 and 3, a plurality of transmission holding members 12 and a plurality of stopper support portions 21 are attached on the transmission support rail 17 along the arrangement direction of the keys 2. In this case, the plurality of stopper support portions 21 are made of metal plates, and are provided at five locations on the transmission support rails 17 corresponding to the plurality of support members 10 and above the plurality of transmission holding members 12 as shown in FIG. It is attached in a protruding state.

  The transmission holding member 12 is made of a hard synthetic resin such as ABS resin, and a plurality of transmission holding members 12 are provided at the rear end portion (left end portion in FIG. 3) on the main body plate 12a as shown in FIGS. 5 (a) and 5 (b). The transmission holding portion 13 is integrally formed along the arrangement direction of the keys 2 in a state where, for example, about 10 keys 2 are provided. Each of the plurality of transmission holding portions 13 includes a shaft support portion 22 that prevents the transmission member 10 from being laterally touched in a state in which the transmission member 10 is rotatably attached, and a regulation that restricts the lateral contact of the transmission member 10 during packaging transportation. Part 23.

  In this case, as shown in FIGS. 3 and 5, the shaft support portion 22 is formed at the rear end portion (the left end portion in FIG. 3) on the main body plate 12 a of the transmission holding member 12 corresponding to each key 2. A pair of guide walls 22a. The pair of guide walls 22a constitute a guide portion that rotatably guides the transmission fitting portion 26 of the transmission member 10 with a transmission fitting portion 26 described later of the transmission member 10 slidably sandwiched from both sides. doing.

  Further, as shown in FIGS. 5A and 5B, a transmission shaft insertion portion 22b into which the transmission holding shaft 24 that rotatably holds the transmission member 10 is inserted into the pair of guide walls 22a. Correspondingly provided. That is, the transmission shaft insertion portion 22b is a circular hole, and is provided on the same axis in each of the pair of guide walls 22a in each shaft support portion 22 of the plurality of transmission holding portions 13.

  As shown in FIGS. 5A and 5B, the transmission holding shaft 24 is a pipe made of metal such as aluminum or stainless steel, and the outer diameter thereof is substantially the same as the inner diameter of the transmission shaft insertion portion 22b. Is formed. The transmission holding shaft 24 has an axial length that is the same as the entire length of the transmission holding member 12 in the key arrangement direction.

  Thereby, as shown in FIGS. 5A and 5B, the transmission holding shaft 24 is supported at each end of the plurality of transmission holding portions 13 from one end side of the transmission holding member 12. It is configured to be sequentially inserted into a plurality of transmission shaft insertion portions 22b provided in each of the portions 22, and to be inserted into the transmission shaft insertion portion 22b of the shaft support portion 22 located at the other end of the transmission holding member 12. ing.

  Thereby, the transmission holding shaft 24 is configured to be attached over the entire length of the transmission holding member 12 in the key arrangement direction, as shown in FIG. In this case, lids (not shown) for preventing the transmission holding shaft 24 from coming out of the transmission holding member 12 are attached to both ends of the transmission holding member 12 in the arrangement direction of the keys 2.

  Further, as shown in FIGS. 3 and 5, the restricting portion 23 of the transmission holding portion 13 corresponds to each transmission member 10 on the front portion (right side portion in FIG. 3) of the main body plate 12 a of the transmission holding member 12. It is a pair of regulation walls formed. As shown in FIG. 5A, the restricting portion 23 guides the transmission member 10 in a state where the rear lower portion of the transmission member 10 is sandwiched, and also causes the transmission member 10 to shake laterally during package transportation. It is configured to regulate.

  The transmission member 10 is made of a hard synthetic resin such as ABS resin, and rotates the hammer member 11 in the vertical direction by rotating in the vertical direction in response to the key pressing operation of the key 2 as shown in FIGS. The transmission main body 25 includes a transmission fitting portion 26 that is integrally formed with the transmission main body 25 and is rotatably attached to a transmission holding shaft 24 that is attached to the transmission holding member 12.

  As shown in FIGS. 6A and 6B, the transmission main body 25 is formed in a waffle shape. That is, the transmission main body portion 25 includes a thin vertical plate portion 25a and a plurality of rib portions 25b formed in a lattice shape on the outer peripheral portion and both side surfaces of the vertical plate portion 25a. It is formed into a shape.

  As shown in FIG. 6A and FIG. 6B, the transmission main body 25 adjusts the weight of the transmission member 10 according to the shape of the vertical plate portion 25a and the formation density of the plurality of rib portions 25b. It is configured. Further, the transmission main body 25 is configured so that the strength is secured by the plurality of rib portions 25b and the occurrence of sink marks in the vertical plate portion 25a during molding, even if the vertical plate portion 25a is formed thin. Has been.

  As shown in FIGS. 6 and 7, the transmission fitting portion 26 is formed in a substantially semicircular shape as a whole, and is formed to protrude rearward from the rear end portion of the transmission main body portion 25 via a connecting neck portion 26 a. . That is, as shown in FIG. 5A, the transmission fitting portion 26 has a thickness in the arrangement direction of the keys 2 that is substantially the same as that between the pair of guide walls 22 a of the shaft support portion 22 of the transmission holding portion 13. It is formed and is configured to be slidably inserted between the pair of guide walls 22a.

  Further, as shown in FIGS. 6 and 7, a transmission fitting hole 26b into which the transmission holding shaft 24 attached to the transmission holding member 12 is inserted is formed in a circular shape at the center of the transmission fitting portion 26. Yes. The transmission fitting hole 26 b has an inner diameter that is substantially the same as the outer shape of the transmission holding shaft 24.

  Thereby, the transmission fitting part 26 is provided in a pair of guide walls 22a in the state arrange | positioned between the pair of guide walls 22a of the shaft support part 22 of the transmission holding part 13, as shown in FIG.6 and FIG.7. When the transmission holding shaft 24 is inserted into the transmission insertion portion 22b, the transmission holding shaft 24 is configured to be rotatably attached to the transmission holding shaft 24 by inserting the transmission holding shaft 24 into the transmission fitting hole 26b. .

  Further, as shown in FIGS. 5A and 6B, the transmission fitting portion 26 has a slit groove 26c in the middle portion in the thickness direction thereof, a direction perpendicular to the axial direction of the transmission holding shaft 24, That is, it is configured along the longitudinal direction of the transmission member 10. Thereby, the transmission fitting part 26 is comprised so that it may elastically deform in the axial direction of the transmission holding shaft 24 which is the thickness direction. Thereby, when the transmission fitting part 26 is inserted between a pair of guide walls 22a, it is comprised so that it may slidably contact to each opposing surface of a pair of guide wall 22a by the slit groove | channel 26c.

  By the way, on the rear lower part of the transmission main body 25 of the transmission member 10, as shown in FIGS. 6A and 6B, a thin wall that is regulated by the regulation part 23 of the transmission holding member 12 is used. A joint portion 27 is provided. The engaging portion 27 is formed to have a thickness substantially the same as that between the pair of restricting walls of the restricting portion 23 by notching both side surfaces of the rear lower portion of the transmission main body portion 25. Thereby, the engaging part 27 is inserted between the pair of restricting walls of the restricting part 23 so as to guide the transmission member 10 to be rotatable, and to restrict the lateral deflection of the transmitting member 10 during packaging transportation. It is configured.

  Further, as shown in FIGS. 2 and 7, the transmission main body 25 of the transmission member 10 is formed such that a lower portion thereof protrudes toward the upper surface of the key 2. A first transmission felt 28 is provided at the lower end of the transmission main body 25. The first transmission felt 28 is configured such that a capstan 29 provided on the upper rear side of the key 2 abuts from below. As a result, when the key 2 is depressed, the transmission member 10 is pushed up by the capstan 29 of the key 2 that contacts the first transmission felt 28 from below, and rotates counterclockwise about the transmission holding shaft 24. It is comprised so that it may rotate.

  Furthermore, as shown in FIGS. 2 and 7, the transmission main body portion 25 of the transmission member 10 has a front end upper portion formed higher than a rear end upper portion. Thereby, the transmission main-body part 25 is formed so that the upper side part may incline in the rear part fall. A second transmission felt 30 is provided on the upper front end of the transmission main body 25.

  As shown in FIG. 2, the second transmission felt 30 is configured such that a hammer protrusion 31 (described later) of the hammer member 11 abuts from above. Thereby, when the key 2 is depressed and the transmission member 10 rotates counterclockwise around the transmission holding shaft 24, the transmission member 10 pushes up the hammer protrusion 31 of the hammer member 11 and rotates the hammer member 11 clockwise. It is configured to let you.

  On the other hand, as shown in FIGS. 1 to 3, the hammer support rail 18 is formed in a rectangular tube shape having a rectangular cross section, like the transmission support rail 17, and has a length over the entire length in the arrangement direction of the plurality of keys 2. Is formed. The hammer support rail 18 is configured such that a predetermined portion in the arrangement direction of the keys 2 is attached on each front rail support portion 20 d of the plurality of support members 20. On the hammer support rail 18, a plurality of hammer holding members 14 are attached along the arrangement direction of the keys 2.

  The hammer holding member 14 is made of a hard synthetic resin such as ABS resin, and as shown in FIGS. 8A and 8B, a plurality of hammer holding members 14 are provided at the rear end portion of the rail-shaped main body plate 14a opened upward. The hammer holding portions 15 are integrally formed along the arrangement direction of the keys 2 in a state where, for example, about 10 keys 2 are held. The hammer holding portion 15 has a shaft support portion 32 that prevents lateral vibration of the hammer member 11 in a state where the hammer member 11 is rotatably attached.

  In this case, as shown in FIGS. 8 (a) and 8 (b), the shaft support portion 32 is provided at the rear end portion (the left end portion in FIG. 8 (a)) of the hammer holding member 14 on the main body plate 14a. It has a pair of guide walls 32 a formed corresponding to the transmission member 10. The pair of guide walls 32a constitutes a guide portion that rotatably guides the hammer fitting portion 37 of the hammer member 11 in a state where a hammer fitting portion 37 (to be described later) of the hammer member 11 is slidably sandwiched from both sides. ing.

  Further, as shown in FIGS. 8A and 8B, a hammer shaft insertion portion 32b into which a hammer holding shaft 34 that rotatably holds the hammer member 11 is inserted into the pair of guide walls 32a. Are provided corresponding to each other. That is, the hammer shaft insertion portion 32b is a circular hole and is provided on the same axis on each of the pair of guide walls 32a in each shaft support portion 32 of the plurality of hammer holding portions 15.

  As shown in FIGS. 8A and 8B, the hammer holding shaft 34 is a metal pipe such as aluminum or stainless steel, like the transmission holding shaft 24, and has an outer diameter of the hammer shaft insertion portion 32b. It is formed to be approximately the same size as the inner diameter. The hammer holding shaft 34 has an axial length that is the same as the entire length of the hammer holding member 14 in the key arrangement direction.

  Thereby, as shown in FIGS. 8A and 8B, the hammer holding shaft 34 is supported at each end of each of the plurality of hammer holding portions 15 from one end side of the hammer holding member 14. It is configured to be sequentially inserted into a plurality of hammer shaft insertion portions 32b provided in each of the portions 32 and to be inserted into the hammer shaft insertion portion 32b of the shaft support portion 32 located at the other end of the hammer holding member 13. ing.

  Thereby, as shown in FIG. 8A, the hammer holding shaft 34 is configured to be attached over the entire length of the hammer holding member 14 in the arrangement direction of the keys 2. In this case, lids (not shown) for preventing the hammer holding shaft 34 from coming out of the hammer holding member 14 are attached to both ends of the hammer holding member 14 in the arrangement direction of the keys 2.

  The hammer member 11 is made of a hard synthetic resin such as ABS resin, and has a hammer portion 35 and a hammer arm 36 as shown in FIGS. 8 and 9, and these are integrally formed. . The hammer portion 35 has a bowl-shaped vertical plate portion 35a, and has a configuration in which rib portions 35b are formed on the outer peripheral portion and both side surfaces thereof. The hammer arm 36 has a lateral plate portion 36a whose length in the front-rear direction is substantially the same as that of the transmission member 10, and has a configuration in which rib portions 36b are formed on the outer peripheral portion and both side surfaces thereof.

  A hammer fitting portion 37 that is rotatably attached to the shaft support portion 32 of the hammer holding member 14 is formed at the front end portion (right end portion in FIG. 9) of the hammer arm 36, as shown in FIGS. ing. The hammer fitting portion 37 is formed in a substantially semicircular shape as in the case of the transmission fitting portion 26, and is formed to project forward from the front end portion of the hammer arm 36 via a connecting neck portion 37 a. That is, the hammer fitting portion 37 is formed so that the thickness in the arrangement direction of the keys 2 is substantially the same as that between the pair of guide walls 32a of the shaft support portion 32, and is slidable between the pair of guide walls 32a. It is configured to be inserted.

  Further, as shown in FIGS. 8 to 10, a hammer fitting hole 37 b into which the hammer holding shaft 34 attached to the hammer holding portion 15 is inserted is formed in a circular shape at the center of the hammer fitting portion 37. . The hammer fitting hole 37 b has an inner diameter that is substantially the same as the outer shape of the transmission holding shaft 24.

  Thereby, the hammer fitting part 37 is provided in a pair of guide wall 32a in the state arrange | positioned between the pair of guide walls 32a in the shaft support part 32 of the hammer holding part 15, as shown in FIGS. When the hammer holding shaft 34 is inserted into the hammer shaft insertion portion 52, the hammer holding shaft 34 is inserted into the hammer fitting hole 37b so that the hammer holding shaft 34 is rotatably attached to the hammer holding shaft 34. Yes.

  Further, as shown in FIG. 8A, the hammer fitting portion 37 has a slit groove 37c in the middle portion in the thickness direction in a direction perpendicular to the axial direction of the hammer holding shaft 34, that is, the longitudinal direction of the hammer member 11. It is the structure formed along the direction. Thereby, the hammer fitting part 37 is comprised so that it may elastically deform in the axial direction of the hammer holding shaft 34 which is the thickness direction. Thereby, when the hammer fitting part 37 is inserted between a pair of guide walls 32a, it is comprised so that it may slidably contact to each opposing surface of a pair of guide wall 32a by the slit groove | channel 37c.

  Further, as shown in FIGS. 9 and 10, a hammer protrusion 31 that abuts from above on the second transmission felt 30 provided at the upper front end of the transmission main body 25 of the transmission member 10, at the lower front end of the hammer arm 36. Is provided. Thereby, when the transmission member 10 rotates counterclockwise, the hammer member 11 is rotated clockwise around the hammer holding shaft 34 of the hammer holding portion 15 by pushing up the hammer protrusion 31 according to the rotation. Is configured to do.

  Further, as shown in FIGS. 2 and 10, the hammer arm 36 is configured to be regulated to the lower limit position, which is the initial position, when the lower end of the hammer arm 36 comes into contact with the lower limit stopper 38 from above. That is, the lower limit stopper 38 is attached on a lower limit stopper rail 39 supported by a plurality of stopper support portions 21 provided on the transmission support rail 17. In this case, as shown in FIG. 10, each of the plurality of stopper support portions 21 is formed such that each upper portion thereof is inclined downward to the rear.

  As shown in FIGS. 2 and 10, the lower limit stopper rail 39 is formed in a rail shape opened to the lower side, and has a length extending over the entire length in the arrangement direction of the keys 2. The lower limit stopper rail 39 is attached to each upper portion of the plurality of stopper support portions 21 in a state of being inclined rearward and downward. For this reason, the lower limit stopper 38 is provided on the lower limit stopper rail 39 in a state where it is inclined rearwardly downward. As a result, the hammer member 10 is configured to be regulated at the initial position in a state where the lower end of the rear end of the hammer arm 36 abuts the lower limit stopper 38 from above to incline rearwardly downward.

  Further, as shown in FIGS. 2 and 10, the hammer arm 36 is configured such that the upper end position thereof is regulated when the upper end of the hammer arm 36 contacts the upper limit stopper 40 from below. That is, the upper limit stopper 40 is attached to the lower surface of the upper limit stopper rail 41 attached to each stopper rail support portion 20e of the plurality of support members 20.

  In this case, as shown in FIG. 2 and FIG. 10, the upper limit stopper rail 41 is a long plate having a substantially L-shaped cross section, and is formed to have a length over the entire length in the arrangement direction of the keys 2. . The upper limit stopper rail 41 has a horizontal portion protruding rearward from each stopper rail support portion 20e of the plurality of support members 20, and a vertical portion is attached to each stopper rail support portion 20e by screws 41a.

  The upper limit stopper 40 is provided on the lower surface of the horizontal portion of the upper limit stopper rail 41 as shown in FIGS. Thereby, when the hammer arm 36 rotates clockwise around the hammer holding shaft 34 of the hammer holding portion 15, the upper end of the hammer arm 36 comes into contact with the upper limit stopper 40 from below. The upper limit position is restricted.

  Further, as shown in FIGS. 2 and 10, a switch pressing portion 42 is formed at the upper front end of the hammer arm 36. A switch substrate 43 is disposed by a pair of substrate support rails 44 above the hammer arm 36 corresponding to the switch pressing portion 42. Each of the pair of board support rails 44 is a long plate having an L-shaped cross section, and is formed to have a length extending over the entire length in the arrangement direction of the keys 2.

  As shown in FIGS. 2 and 10, the pair of substrate support rails 44 are attached with their horizontal portions spaced apart from each other on the substrate rail support portions 20 f of the plurality of support members 20 by a predetermined distance. As shown in FIG. 1, the switch board 43 is divided into a plurality of parts. In other words, in this embodiment, the switch board 43 is divided into, for example, four parts, and is attached on the pair of board support rails 44 with a length corresponding to about 20 keys 2.

  As shown in FIGS. 2 and 10, rubber switches 45 are provided on the lower surfaces of the switch boards 43, respectively. The rubber switch 45 has a structure in which an inverted dome-shaped bulging portion 45a is formed on a rubber sheet long in the arrangement direction of the keys 2 so as to correspond to the plurality of hammer arms 36, respectively. Inside the bulging portion 45a, there are a plurality of movable contacts 45b that come into contact with and separate from a plurality of fixed contacts (not shown) provided on the lower surface of the switch substrate 43 along the front-rear direction of the hammer arm 36. Is provided.

  Thereby, as shown in FIG. 2, the rubber switch 45 is rotated clockwise around the hammer holding shaft 34 of the hammer holding portion 15 by the hammer pressing portion 42 of the hammer arm 36 from the lower side. When pressed, the inverted dome-shaped bulging portion 45a is elastically deformed, and the plurality of movable contacts 45b sequentially contact the plurality of fixed contacts with time, thereby increasing the key pressing strength of the key 2. A corresponding switch signal is output.

Next, the case where the keyboard apparatus 1 of such an electronic keyboard musical instrument is assembled will be described.
First, a plurality of keys 2 and a plurality of support members 20 are installed on the base plate 5. In this case, as shown in FIGS. 1 and 2, 88 keys 2 are arranged in parallel on the base plate 5 so as to be vertically rotatable by the balance pins 4a and 4b. In addition, the support member 20 is attached to locations on both ends of the base plate 5 in the arrangement direction of the keys 2 and locations between the three keys 2 positioned for each of the 20 keys 2.

  In this state, as shown in FIG. 3, the transmission support rails 17 are attached to the rear rail support portions 20 c of the plurality of support members 20 and arranged over the entire length in the arrangement direction of the keys 2. A plurality of transmission holding members 12 and a plurality of stopper support portions 21 are attached on the rail 17 along the arrangement direction of the keys 2. Similarly, the hammer support rails 18 are attached to the front rail support portions 20d of the plurality of support members 20 and arranged over the entire length of the key 2 in the arrangement direction, and a plurality of hammer holding members are provided on the hammer support rails 18. 14 is attached along the arrangement direction of the keys 2.

  Then, the plurality of stopper support portions 21 are attached to five locations on the transmission support rails 17 corresponding to the plurality of support members 10 in a state of protruding above the plurality of transmission holding members 12. In this state, the plurality of transmission members 10 are sequentially attached to the transmission holding portions 13 of the plurality of transmission holding members 12. In this case, as shown in FIG. 7, the transmission fitting portion 26 of the transmission member 10 is sequentially disposed between the pair of guide walls 22 a in the shaft support portion 22 of the transmission holding portion 13.

  At this time, the transmission fitting hole 26b of the transmission fitting portion 26 of the transmission member 10 is inserted into each transmission shaft insertion portion 22b provided on each pair of guide walls 22a in each shaft support portion 22 of the plurality of transmission holding portions 13. Match on the same axis. In this state, one end portion of the transmission holding shaft 24 is sequentially inserted into each transmission shaft insertion portion 22b of the plurality of transmission holding portions 13 from one end side of the transmission holding member 12, and each of the plurality of transmission members 10 is also provided. They are sequentially inserted into the transmission fitting holes 26b.

  Then, one end portion of the transmission holding shaft 24 is inserted into the transmission shaft insertion portion 22 b of the shaft support portion 22 located at the other end portion of the transmission holding member 12. As a result, the transmission holding shaft 24 is attached to the transmission holding member 12 over the entire length in the key arrangement direction, and the plurality of transmission members 10 are arranged in parallel along the key arrangement direction. Mounted rotatably.

  At this time, when the transmission fitting portion 26 is inserted between the pair of guide walls 22a of the shaft support portion 22, the transmission fitting portion 26 is formed between the pair of guide walls 22a by the slit groove 26c of the transmission fitting portion 26. It rotates in a state of being slidably elastically contacted with each facing surface. For this reason, the transmission member 10 does not touch the arrangement direction of the keys 2 and rotates in the vertical direction.

  At this time, the first transmission felt 28 below the transmission member 10 contacts the capstan 29 of the key 2 from above, and the transmission member 10 is restricted to the initial position. In this case, the engaging portion 27 provided at the lower rear portion of the transmission member 10 is inserted between the pair of restriction walls which are the restriction portions 23 of the transmission holding portion 15 to guide the transmission member 10 to be rotatable. In addition, the lateral movement of the transmission member 10 in the direction in which the keys 2 are arranged is restricted during package transportation.

  Thus, each of the plurality of transmission members 10 corresponds to the plurality of transmission holding portions 13 of the transmission holding member 12, and in this state, the transmission fitting portions 26 of the transmission member 10 are connected to the shaft support portions of the plurality of transmission holding portions 13. The transmission fitting holes 26b of the transmission fitting portion 26 of the transmission member 10 are sequentially arranged between the pair of guide walls 22a of the transmission member 10, and the transmission shaft insertion portions provided in the pair of guide walls 22a of the shaft support portion 22 are arranged. Correspond to 22b on the same axis.

  In this state, the transmission holding shaft 24 is sequentially inserted into the transmission shaft insertion portions 22b of the plurality of transmission holding portions 13 and is sequentially inserted into the transmission fitting holes 26b of the plurality of transmission members 10. Accordingly, the plurality of transmission members 10 are sequentially attached to the transmission holding portions 13 of the transmission holding member 12 by the transmission holding shaft 24, and all the transmission members 10 are attached corresponding to all the keys 2. In this state, lids (not shown) are attached to both ends of the transmission holding member 12 to prevent the transmission holding shaft 24 from coming off.

  Thereafter, a lower limit stopper rail 39 is attached to the upper part of the plurality of stopper support portions 21, and a lower limit stopper 38 is attached on the lower limit stopper rail 39. Then, the plurality of hammer members 11 are sequentially attached to the respective hammer holding portions 15 of the plurality of hammer holding members 14. In this case, as shown in FIG. 10, the hammer fitting portion 37 of the hammer member 11 is sequentially disposed between each pair of guide walls 32 a in each shaft support portion 32 of the plurality of hammer holding portions 15.

  At this time, the hammer fitting hole 37b of the hammer fitting portion 37 of the hammer member 11 is inserted into each hammer shaft insertion portion 32b provided on each pair of guide walls 32a in each shaft support portion 32 of the plurality of hammer holding portions 15. Match on the same axis. In this state, one end portion of the hammer holding shaft 34 is sequentially inserted into each hammer shaft insertion portion 32b of the plurality of hammer holding portions 15 from one end portion side of the hammer holding member 14, and each of the plurality of hammer members 11 is also provided. The hammers are sequentially inserted into the hammer fitting holes 37b.

  Then, one end portion of the hammer holding shaft 34 is inserted into the hammer shaft insertion portion 32 b of the shaft support portion 32 located at the other end portion of the hammer holding member 14. Accordingly, the hammer holding shaft 34 is attached to the hammer holding member 14 over the entire length in the key arrangement direction, and the hammer holding shaft 34 is attached to the hammer holding shaft 34 in a state where the plurality of hammer members 11 are arranged in parallel along the key arrangement direction. Mounted rotatably.

  At this time, when the hammer fitting portion 37 is inserted between the pair of guide walls 32a of the shaft support portion 32, the hammer fitting portion 37 is formed between the pair of guide walls 32a by the slit groove 37c of the hammer fitting portion 37. It rotates in a state of being slidably elastically contacted with each facing surface. As a result, the hammer member 11 rotates in the vertical direction without being laterally touched in the arrangement direction of the keys 2.

  In this state, the hammer member 11 is rotated around the hammer holding shaft 34, and the hammer protrusion 31 of the hammer member 11 is brought into contact with the second transmission felt 30 of the transmission member 10 from above and the rear side of the hammer arm 36. The lower part is brought into contact with the lower limit stopper 38 from above. As a result, the hammer member 11 is regulated to the initial position in a state where the hammer member 11 is inclined rearwardly downward.

  Thus, each of the plurality of hammer members 11 is made to correspond to the plurality of hammer holding portions 15 of the hammer holding member 14, and in this state, the hammer fitting portions 37 of the hammer member 11 are connected to the respective shaft support portions of the plurality of hammer holding portions 15. The hammer fitting holes 37b of the hammer fitting portion 37 of the hammer member 11 are sequentially arranged between the pair of guide walls 32a of the hammer member 11, and the hammer shaft insertion portions provided in the pair of guide walls 32a of the shaft support portion 32 are arranged. It corresponds to 32b on the same axis.

  In this state, the hammer holding shaft 34 is sequentially inserted into each hammer shaft insertion portion 32 b of the plurality of hammer holding portions 15 and is sequentially inserted into each hammer fitting hole 37 b of the plurality of hammer members 11. As a result, the plurality of hammer members 11 are sequentially attached to the respective hammer holding portions 14 of the hammer holding member 14 by the hammer holding shaft 34, and all the hammer members 11 are attached corresponding to all the keys 2. In this state, lids (not shown) are attached to both ends of the hammer holding member 14 to prevent the hammer holding shaft 34 from coming off.

  Thereafter, the upper limit stopper rail 41 is attached to each stopper rail support portion 20 e of the plurality of support members 20, and the upper limit stopper 40 is attached to the lower surface of the upper limit stopper rail 41. In addition, a pair of board support rails 44 are mounted on the board rail support portions 20f of the plurality of support members 20 at a predetermined interval, and the plurality of switch boards 43 are arranged on the pair of board support rails 44 in the arrangement direction of the key 2. Install along.

  In this case, the rubber switch 45 is attached to the lower surface of the switch substrate 43 in advance. When the switch board 43 is mounted on the pair of board support rails 44, the bulging portions 45a of the rubber switch 45 are made to correspond to the switch pressing portions 42 of the plurality of hammer arms 36, respectively. In this state, the switch board 43 is mounted on the pair of board support rails 44.

Next, the operation of the keyboard device 1 of such an electronic keyboard instrument will be described.
In this keyboard device 1, it is possible to perform by pressing the key 2. At this time, when the key 2 is depressed, the key 2 rotates clockwise around the balance pins 4 a and 4 b, and the capstan 29 of the key 2 pushes up the transmission member 10. Thereby, the transmission member 10 rotates counterclockwise around the transmission holding shaft 24 attached to the transmission holding portion 13.

  At this time, since the transmission holding shaft 24 is fitted in the transmission fitting hole 26a of the transmission fitting portion 26 of the transmission member 10, the transmission member 10 does not rattle and rotates smoothly around the transmission holding shaft 24. To do. Further, at this time, since the transmission fitting portion 26 of the transmission member 10 is guided in a state of being slidably rotatable between the pair of guide walls 22a of the transmission holding portion 13, the transmission member 10 swings sideways. Smoothly rotates up and down.

  As described above, when the transmission member 10 is pushed up by the capstan 29 of the key 2 and rotates counterclockwise, the hammer protrusion 31 of the hammer member 11 is pushed up by the second felt 30 of the transmission member 10. As a result, the hammer member 11 rotates clockwise around the hammer holding shaft 34 of the hammer holding portion 15 to apply an action load to the key 2.

  At this time, similarly to the transmission member 10, the hammer holding shaft 34 attached to the hammer holding portion 15 is fitted into the hammer fitting hole 37 a of the hammer fitting portion 37 of the hammer member 11. It smoothly rotates around the hammer holding shaft 34 without being attached. At this time, since the hammer fitting portion 37 of the hammer member 11 is guided while being slidably rotatable between the pair of guide walls 32 a of the hammer holding portion 15, the hammer member 11 swings sideways. Smoothly rotates up and down.

  Thus, when the hammer member 11 rotates clockwise about the hammer holding shaft 34, an action load is applied to the key 2 by the moment of inertia of the hammer member 11. That is, the hammer arm 36 is formed so that the length of the key 2 in the front-rear direction is substantially the same as that of the transmission member 10, and a hammer portion 35 is formed at the rear end portion of the hammer hammer arm 36. A hammer fitting portion 37 at the front end portion of 36 is rotatably attached to the hammer holding shaft 34.

  For this reason, when the hammer member 11 rotates clockwise around the hammer holding shaft 34, an inertia moment is generated in the hammer member 11, and an action load is applied to the key 2 by this inertia moment. Thereby, a key touch feeling very close to the key touch feeling of an acoustic piano can be obtained.

  When the hammer member 11 rotates clockwise about the hammer holding shaft 34 in this way, the switch pressing portion 42 of the hammer arm 36 moves down the inverted dome-shaped bulging portion 45 a of the rubber switch 45 provided on the switch substrate 43. Press from the side. As a result, the inverted dome-shaped bulging portion 45a is elastically deformed, and the plurality of movable contacts 45b in the bulging portion 45a sequentially contact with the plurality of fixed contacts with time, thereby pressing the key 2 A switch signal corresponding to the strength is output, and a musical sound is generated from a speaker (not shown).

  When the hammer member 11 further rotates clockwise about the hammer holding shaft 34, the upper rear end of the hammer arm 36 comes into contact with the upper limit stopper 40 from below, and the rotation of the hammer member 11 is restricted. Thereafter, when the key 2 starts a key release operation, the transmission member 10 rotates clockwise to return to the initial position, and the hammer member 11 rotates counterclockwise to return to the initial position. Along with this, the key 2 returns to the initial position.

  As described above, according to the action mechanism 3 of the electronic keyboard device, the plurality of transmission members 10 that rotate according to the key pressing operation of each of the plurality of keys 2 arranged in parallel, and the rotation operation of the transmission member 10 are performed. Accordingly, a plurality of hammer members 11 that rotate in response and apply an action load to the key 2 and a plurality of hammer holding portions 15 corresponding to the plurality of hammer members 11 are integrally formed along the arrangement direction of the keys 2. A hammer holding member 14 formed and provided with a hammer shaft insertion portion 37b corresponding to the same axis in each of the plurality of hammer holding portions 15, and inserted into the hammer shaft insertion portions 37b of each of the plurality of hammer holding portions 15. The hammer holding shaft is attached over the entire length of the hammer holding member 14, and each of the plurality of hammer members 11 is attached so as to be rotatable. 4 is provided with the less number of parts, aims to improve the assembling workability and productivity, it is possible to reduce the cost.

  In other words, in the action mechanism 3 of the electronic keyboard device, it is not necessary to separately manufacture and assemble the plurality of hammer holding portions 15 in advance before attaching the plurality of hammer members 11 to the hammer holding member 14. The portion 15 can be installed at a time, and when the hammer holding shaft 34 is inserted and attached to each hammer shaft insertion portion 32b of the plurality of hammer holding portions 15 in this state, each of the plurality of hammer members 15 is attached to the hammer holding shaft. 34 can be attached so as to be sequentially rotatable. For this reason, since the number of parts is small and the assembling work can be facilitated, the productivity is good and the cost can be reduced.

  In this case, each of the plurality of hammer members 11 has a hammer fitting portion 37 provided with a hammer fitting hole 37 b into which the hammer holding shaft 34 is inserted, and each of the plurality of hammer holding portions 15 has a hammer fitting portion 37. Has a shaft support portion 32 composed of a pair of guide walls 32a, and a hammer shaft insertion portion 32b is provided on the same shaft in the pair of guide walls 32a of the shaft support portion 32, so that a hammer holding shaft is provided. When inserting 34 into each hammer shaft insertion portion 32 b of the plurality of hammer holding portions 15, simply inserting the hammer holding shaft 34 into the hammer fitting hole 37 b of the hammer fitting portion 37 in a simple and easy manner. As a result, assembly workability is good.

  That is, in the state where the hammer fitting portion 37 of the hammer member 11 is disposed between each pair of guide walls 32a in the shaft support portions 32 of the plurality of hammer holding portions 15, the hammer fitting of the hammer fitting portion 37 of the hammer member 11 is performed. The joint hole 37b can be made to correspond to each hammer insertion part 32b provided in each of a pair of guide walls 32a correctly and satisfactorily on the same axis.

  In this state, the hammer holding shaft 34 can be sequentially inserted into each of the hammer insertion portions 32b of the plurality of hammer holding portions 15 and the hammer fitting holes 37b of the hammer member 11, so that the entire length of the hammer holding member 14 is reached. A plurality of hammer members 11 can be attached at a time. As a result, the hammer member 11 can be securely and satisfactorily attached to the hammer holding shaft 34 in a rotatable state, so that the hammer member 11 can be smoothly and satisfactorily rotated without the hammer member 11 rattling. it can.

  For this reason, even if the hammer holding member 14 in which the plurality of hammer holding portions 15 are formed along the arrangement direction of the key 2 is installed in advance before attaching the plurality of hammer members 11 to the hammer holding member 14, the hammer member 11 hammer fitting portions 37 can be arranged between each pair of guide walls 32 a of the plurality of hammer holding portions 15, and the hammer fitting holes 37 b of the hammer fitting portion 37 of the hammer member 11 are arranged in each pair of guides. Each hammer insertion part 32b provided in each wall 32a can be made to correspond on the same axis reliably.

  In this state, the hammer holding shaft 34 can be sequentially inserted into the respective hammer insertion portions 22b of the pair of guide walls 32a and the hammer fitting holes 37b of the hammer member 11, so that a plurality of hammer members 11 are provided by the hammer holding shaft 34. It can be easily and easily attached to the hammer holding portion 15 in succession. For this reason, an assembling work can be facilitated and productivity can be improved.

  In this case, the hammer holding portion 15 is provided with a pair of guide walls 32 a that prevent the hammer member 11 from swinging, so that the hammer fitting portion 37 of the hammer member 11 is attached to the hammer holding shaft 34 of the hammer holding portion 15. If it attaches so that rotation is possible, the hammer fitting part 37 can be slidably pinched by a pair of guide wall 32a. Further, since the slit groove 37c is formed in the hammer fitting portion 37 along the longitudinal direction of the hammer member 11, when the hammer fitting portion 37 is inserted between the pair of guide walls 32a, the slit groove 37c is formed. 37c can be slidably elastically contacted with the pair of guide walls 32a.

  For this reason, in this action mechanism 3, when the hammer member 11 is rotated in response to the key pressing operation, the hammer member 11 is prevented from swinging in the arrangement direction of the key 2 by the pair of guide walls 32 a of the hammer holding portion 15. Can be prevented. Thereby, the hammer member 11 can be rotated extremely smoothly and satisfactorily, and the positional accuracy and operation accuracy of the hammer member 11 can be increased.

  Further, according to the action mechanism 3 of the electronic keyboard device, a plurality of transmission holding portions 13 corresponding to the plurality of transmission members 10 are integrally formed along the arrangement direction of the keys 2 and a plurality of transmission holdings are made. A transmission holding member 12 having a transmission shaft insertion portion 22b provided on the same axis in each of the portions 13, and a transmission holding member 12 inserted into the transmission shaft insertion portion 22b of each of the plurality of transmission holding portions 13 and attached over the entire length of the transmission holding member 12. Since each of the plurality of transmission members 10 is provided with a transmission holding shaft 24 that is rotatably mounted, the number of parts is small and the assembly work can be facilitated, so that productivity is improved and cost reduction is achieved. be able to.

  That is, in the action mechanism 3 of the electronic keyboard device, it is not necessary to separately manufacture and assemble the plurality of transmission holding portions 13 in advance before attaching the plurality of transmission members 10 to the transmission holding member 12. The portion 13 can be installed at a time, and when the transmission holding shaft 24 is inserted into the transmission shaft insertion portion 22b in this state, each of the plurality of transmission members 12 can be attached to the transmission holding shaft 24 so as to be rotatable. . For this reason, like the hammer holding member 14, the number of parts is small, and the assembly work can be easily performed. Therefore, the productivity is good and the cost can be reduced.

  In this case, each of the plurality of transmission members 10 has a transmission fitting portion 26 provided with a transmission fitting hole 26b into which the transmission holding shaft 24 is inserted, and each of the plurality of transmission holding portions 13 has a transmission fitting portion 26. Has a shaft support portion 22 composed of a pair of guide walls 22a, and a pair of guide walls 22a of the shaft support portion 22 is provided with a transmission shaft insertion portion 22b on the same axis, whereby a transmission holding shaft is provided. Similar to the hammer member 11, the transmission member is simply inserted into the transmission fitting hole 26 b of the transmission member 10 in order when the 24 is inserted into the transmission shaft insertion portions 22 b of the plurality of transmission holding portions 13. Since 10 can be easily and easily attached, the assembly workability is good.

  That is, the transmission fitting of the transmission fitting portion 26 of the transmission member 10 is performed in a state where the transmission fitting portion 26 of the transmission member 10 is disposed between each pair of guide walls 22 a in each shaft support portion 22 of the plurality of transmission holding portions 13. The joint hole 37b can be made to correspond accurately and satisfactorily on the same axis to each transmission shaft insertion portion 22b provided in each of the pair of guide walls 22a.

  In this state, the transmission holding shaft 24 can be sequentially inserted into the transmission shaft insertion portions 22b of the plurality of transmission holding portions 13 and the transmission fitting holes 37b of the transmission member 10, so that the entire length of the transmission holding member 12 is extended. Thus, a plurality of transmission members 10 can be attached at a time. Thereby, since the transmission member 10 can be reliably and satisfactorily attached to the transmission holding shaft 24 in a rotatable state, the transmission member 10 can be smoothly and satisfactorily rotated without causing the transmission member 10 to rattle. Can do.

  For this reason, even if the plurality of transmission holding portions 13 are installed in advance along the arrangement direction of the key 2 before the plurality of transmission members 10 are attached to the transmission holding member 12, a plurality of transmission holding members 12 are installed. The transmission fitting portion 26 of the transmission holding portion 13 can be disposed between each pair of guide walls 22 a of the plurality of transmission holding portions 13, and the transmission fitting holes 36 b of the transmission fitting portion 26 of the transmission member 10 are respectively provided. Each transmission insertion portion 22b provided on each of the pair of guide walls 22a can be surely associated with the same axis.

  In this state, the transmission holding shaft 24 can be sequentially inserted into each transmission shaft insertion portion 22b of the pair of guide walls 22a and the transmission fitting hole 37b of the transmission member 10, so that the transmission member 10 is moved by the transmission holding shaft 24. The plurality of transmission holding portions 13 can be easily and easily attached sequentially. For this reason, an assembling work can be facilitated and productivity can be improved.

  In this case, the transmission holding portion 13 is provided with a pair of guide walls 22 a for preventing the lateral movement of the transmission member 10, so that the transmission fitting portion 26 of the transmission member 10 is fitted to the transmission holding shaft 24 of the transmission holding portion 13. Is attached rotatably, the transmission fitting portion 26 can be slidably sandwiched between the pair of guide walls 22a. Moreover, since the slit groove 26c is formed in the transmission fitting part 26 along the longitudinal direction of the transmission member 10, when the transmission fitting part 26 is inserted between the pair of guide walls 22a, the slit groove 26c is formed. The pair of guide walls 22a can be slidably elastically contacted by 26c.

  For this reason, in this action mechanism 3, when the transmission member 10 rotates in response to the key pressing operation, the transmission member 10 is not swung in the direction in which the keys 2 are arranged by the pair of guide walls 22 a of the transmission holding portion 13. Can be prevented. Thereby, while being able to rotate the transmission member 10 very smoothly and favorable, the positional accuracy and operation | movement precision of the transmission member 10 can be improved.

  Further, the transmission holding portion 13 is provided with a restriction portion 23 that restricts the lateral position of the transmission member 10, and the restriction portion 23 is a pair of body plates 12 a formed on the transmission holding member 12. By being a structure that restricts the lateral position of the transmission member 10 in a state of sandwiching the engaging portions 27 that are notched on both side surfaces of the rear lower portion of the transmission main body portion 25 of the transmission member 10. Since the engaging portion 27 of the transmission member 10 can be regulated between the pair of regulating walls of the regulating portion 23, the transmission member 10 can be guided to be rotatable, and the transmission member 10 can be swung laterally during packaging. Without restricting the position, it can be well regulated.

  Further, in the action mechanism 3 of the electronic keyboard device, the transmission support rail 17 is arranged along the arrangement direction of the keys 2 and the transmission holding member 12 is attached, and the hammer holding member is arranged along the arrangement direction of the keys 2. And a hammer support rail 18 to which 14 is attached, whereby the transmission holding member 12 in which a plurality of transmission holding portions 13 are integrally formed along the arrangement direction of the keys 2 is sequentially attached on the transmission support rail 17. In addition, the hammer holding member 14 in which the plurality of hammer holding portions 15 are integrally formed along the arrangement direction of the key 2 can be sequentially mounted on the hammer support rail 18, thereby simplifying the assembling work. Can be achieved.

  Further, the action mechanism 3 of the electronic keyboard device includes a plurality of support members 20 that are arranged at a plurality of predetermined positions in the entire length in the arrangement direction of the keys 2 and support the transmission support rail 17 and the hammer support rail 18. Therefore, the transmission support rail 17 and the hammer support rail 18 can be reliably and satisfactorily delivered in a stable state over the entire length in the arrangement direction of the keys 2 by the plurality of support members 20. And the some transmission member 10 and the some hammer member 11 can be attached favorably.

(Second Embodiment)
Next, a second embodiment in which the present invention is applied to an electronic keyboard instrument will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as 1st Embodiment shown by FIGS.
As shown in FIGS. 11 to 15, the electronic keyboard instrument has a configuration in which a hammer holding member 50 and a transmission holding member 51 are different from those in the first embodiment, and the other configurations are almost the same as those in the first embodiment. ing.

  As in the first embodiment, the hammer holding member 50 is formed by hard synthesis such as ABS resin. As shown in FIGS. 11 to 13, the hammer holding member 50 includes a first hammer cutting portion in which a hammer shaft insertion portion 52 provided in each of the plurality of hammer holding portions 15 is opened to the lower side of the hammer holding portion 15. It has a notch portion 52a and a second hammer notch portion 52b opened on the upper side of the hammer holding portion 15, and the first hammer notch portion 52a and the second hammer notch portion 52b have a plurality of hammer holding portions 15. The structure is provided alternately.

  That is, as in the first embodiment, the plurality of hammer holding portions 15 are arranged on the rear end portion of the rail-shaped main body plate 50a whose upper side is opened, with the key 2 being in a state of about 10 keys 2, for example. It is integrally formed along the arrangement direction. The hammer holding portion 15 has a shaft support portion 32 that prevents lateral vibration of the hammer member 11 in a state where the hammer member 11 is rotatably attached.

  In this case, as shown in FIGS. 11 and 12, the shaft support portion 32 is formed at the rear end portion (upper side portion in FIG. 12) on the main body plate 50 a of the hammer holding member 50 so as to correspond to each transmission member 10. A pair of guide walls 32a. The pair of guide walls 32a constitutes a guide portion that rotatably guides the hammer fitting portion 37 of the hammer member 11 in a state where a hammer fitting portion 37 (to be described later) of the hammer member 11 is slidably sandwiched from both sides. ing.

  Further, as shown in FIGS. 11 to 13, the pair of guide walls 32 a are provided with hammer shaft insertion portions 52 into which the hammer holding shaft 34 that rotatably holds the hammer member 11 is inserted. Yes. The hammer shaft insertion portion 52 includes a first hammer cutout portion 52a that is opened downward from one guide wall 32a of the pair of guide walls 32a, and an upper portion toward the other guide wall 32a. And an open second hammer notch 52b.

  In this case, as shown in FIGS. 11 to 13, the first hammer notch portion 52 a is formed in a semicircular shape having an upper end portion substantially the same as the outer diameter of the hammer holding shaft 34. The second hammer cutout portion 52 b is formed in a semicircular shape having a lower end portion substantially the same as the outer diameter of the hammer holding shaft 34. The semicircular center located at the upper end of the first hammer notch 52a and the semicircular center located at the lower end of the second hammer notch 52b are located on the same axis. Is formed.

  Accordingly, as shown in FIGS. 11 and 12, one end of the hammer holding shaft 34 is provided on each shaft support portion 32 of the plurality of hammer holding portions 15 from one end side of the hammer holding member 50. The hammer shaft of the shaft support portion 32 which is sequentially inserted into the first hammer notch portion 52a and the second hammer notch portion 52b in the plurality of hammer shaft insertion portions 52 and is located at the other end portion of the hammer holding member 13. It is configured to be inserted into the insertion portion 52.

  Thereby, as shown in FIGS. 13 (a) to 13 (d), the hammer holding shaft 34 has a semicircular edge located at the upper end of the first hammer notch 52a and the second hammer cut. It is configured so as to be sandwiched up and down with a semicircular edge located at the lower end of the notch 52b and arranged over the entire length of the hammer holding member 50 in this state.

  Also in this case, the hammer member 11 has a pair of guides in a state where the hammer fitting portion 37 is disposed between the pair of guide walls 32a of the shaft support portion 32 of the hammer holding portion 15 as in the first embodiment. When the hammer holding shaft 34 is inserted into the hammer shaft insertion portion 52 provided on the wall 32a, the hammer holding shaft 34 is inserted into the hammer fitting hole 37b of the hammer member 11 so that the hammer holding shaft 34 can rotate. It is comprised so that it can be attached to.

  On the other hand, the transmission holding member 51 is formed by hard synthesis such as ABS resin, as in the first embodiment. As shown in FIGS. 14 and 15, the transmission holding member 51 includes a first transmission cut-off portion in which the transmission shaft insertion portions 53 provided in each of the plurality of transmission holding portions 13 are opened below the transmission holding portion 13. It has the notch part 53a and the 2nd transmission notch part 53b open | released above the transmission holding part 13, and the 1st transmission notch part 53a and the 2nd transmission notch part 53b are the some transmission holding part 13 The structure is provided alternately.

  That is, as in the first embodiment, the plurality of transmission holding portions 13 are connected to the rear end portion of the rail-shaped main body plate 51a whose upper side is opened, for example, in a state where about 10 keys 2 are held against each key 2. It is integrally formed along the arrangement direction. The transmission holding portion 13 has a shaft support portion 22 that prevents lateral vibration of the transmission member 10 in a state where the transmission member 10 is rotatably attached.

  In this case, as shown in FIGS. 14 and 15, the shaft support portion 22 is formed at the rear end portion (left end portion in FIG. 13) on the main body plate 51 a of the transmission holding member 51 in correspondence with each transmission member 10. A pair of guide walls 22a. The pair of guide walls 22a constitute a guide portion that rotatably guides the transmission fitting portion 26 of the transmission member 10 in a state where the transmission fitting portion 26 of the transmission member 10 is slidably sandwiched from both sides. .

  Further, as shown in FIGS. 14 and 15, the pair of guide walls 22 a are provided with transmission shaft insertion portions 53 that are inserted into the transmission holding shaft 24 that rotatably holds the transmission member 10. It has been. The transmission shaft insertion portion 53 includes a first transmission cutout portion 53a that is opened downward from one guide wall 22a of the pair of guide walls 22a, and an upper portion toward the other guide wall 22a. And an open second transmission notch 53b.

  In this case, as shown in FIG. 14 and FIG. 15, the first transmission notch 53 a is formed in a semicircular shape having an upper end portion substantially the same as the outer diameter of the transmission holding shaft 24. The second transmission notch 53 b is formed in a semicircular shape whose lower end is approximately the same size as the outer diameter of the transmission holding shaft 24. The semicircular center located at the upper end of the first transmission notch 53a and the semicircular center located at the lower end of the second transmission notch 53b are located on the same axis. Is formed.

  Thereby, as shown in FIG. 14, the transmission holding shaft 24 has one end portion provided on each of the shaft support portions 22 of the plurality of transmission holding portions 13 from one end side of the transmission holding member 51. The transmission shaft insertion portion 53 of the shaft support portion 22 that is sequentially inserted into the first transmission cutout portion 53 a and the second transmission cutout portion 53 b in the transmission shaft insertion portion 53 and is located at the other end of the transmission holding member 12. It is comprised so that it may be inserted in.

  Thereby, as shown in FIGS. 15A to 15D, the transmission holding shaft 24 includes a semicircular edge located at the upper end of the first transmission notch 53a and the second transmission cut. It is configured so as to be sandwiched up and down with the semicircular edge located at the lower end of the notch 53b and disposed over the entire length of the transmission holding member 51 in this state.

  Also in this case, the transmission member 10 has a pair of guides in a state where the transmission fitting portion 26 is disposed between the pair of guide walls 22a of the shaft support portion 22 of the transmission holding portion 13 as in the first embodiment. When the transmission holding shaft 24 is inserted into the transmission shaft insertion portion 53 provided on the wall 22a, the transmission holding shaft 24 is rotatably attached to the transmission holding shaft 24 by inserting the transmission holding shaft 24 into the transmission fitting hole 26b. It is configured as follows.

Next, a case where the hammer holding member 50 and the transmission holding member 51 of such an electronic keyboard instrument are manufactured will be described.
First, when the hammer holding member 50 is manufactured, it is manufactured by a hammer molding die (not shown). This hammer mold is composed of an upper mold and a lower mold. That is, the dividing line (parting line) between the upper mold and the lower mold is a half located at the upper end of the first hammer notch 52 a provided in each shaft support 32 of the plurality of hammer holding sections 15. The circular center and the semicircular center located at the lower end of the second hammer notch 52b are installed at the location.

  Thereby, the upper mold and the lower mold are overlapped, and the resin is injected and filled in the cavity formed in the upper mold and the lower mold. The hammer holding member 50 is molded by dividing the mold and the lower mold by a dividing line (parting line) and releasing the upper mold and the lower mold. At this time, without using the slide core, the upper die is molded above the semicircular center of the first hammer notch 52a, and the semicircle center of the second hammer notch 52b is formed by the lower die. The lower side is molded.

  On the other hand, when the transmission holding member 51 is manufactured, it is manufactured by a transmission molding die (not shown). This transmission mold is composed of an upper mold and a lower mold. That is, the dividing line (parting line) between the upper mold and the lower mold is a half located at the upper end portion of the first transmission cutout portion 53a provided in each shaft support portion 22 of the plurality of transmission holding portions 13. The circular center and the semicircular center located at the lower end of the second transmission notch 53b are installed at the location.

  Thereby, the upper mold and the lower mold are overlapped, and the resin is injected and filled in the cavity formed in the upper mold and the lower mold. The transmission holding member 51 is molded by dividing the mold and the lower mold by a dividing line (parting line) and releasing the upper mold and the lower mold. Also at this time, without using the slide core, the upper mold molds the upper side of the center of the semicircular shape of the first transmission notch 53a, and the lower mold forms the semicircle of the second transmission notch 53b. The lower side of the center of the shape is molded.

Next, the case where the action mechanism 3 of such an electronic keyboard instrument is assembled will be described.
First, when the hammer member 11 is attached to each hammer holding portion 15 of the hammer holding member 50, the hammer fitting portion 37 of the hammer member 11 is paired in the shaft support portion 32 of the hammer holding portion 15 as in the first embodiment. The guide walls 32a are sequentially arranged.

  At this time, the hammer fitting hole 37 b of the hammer fitting portion 37 of the hammer member 11 is made to correspond to each hammer shaft insertion portion 52 provided in the pair of guide walls 32 a of the shaft support portion 32. That is, the center of the hammer fitting hole 37b of the hammer member 11 is centered on a semicircular shape located at the lower end of the first hammer notch 52a of the shaft support portion 32 and the upper end of the second hammer notch 52b. Corresponding to the center of the semi-circular shape located at.

  In this state, the one end portion of the hammer holding shaft 34 is located at the lower end portion of each first hammer notch portion 52a of the plurality of hammer holding portions 15 from one end portion side of the hammer holding member 14. And sequentially inserted into the semicircular portion located at the upper end of each second hammer notch 52b, and sequentially into each hammer fitting hole 37b of the plurality of hammer members 11. Then, one end portion of the hammer holding shaft 34 is inserted into the hammer shaft insertion portion 52 of the shaft support portion 32 located at the other end portion of the hammer holding member 14.

  As a result, the hammer holding shaft 34 has a semicircular portion located at the lower end of each first hammer notch 52a in each of the plurality of hammer holding parts 15 and each second hammer notch in the plurality of hammer holding parts 15. It is alternately sandwiched from above and below by a semicircular portion located at the upper end of the portion 52b. In this state, the hammer holding shaft 34 is attached to the hammer holding member 14 over the entire length in the key arrangement direction, and the plurality of hammer members 11 are arranged in parallel along the key arrangement direction. Attached to be rotatable.

  On the other hand, when the transmission member 10 is attached to each transmission holding portion 13 of the transmission holding member 51, the transmission fitting portion 26 of the transmission member 10 is paired with the shaft support portion 22 of the transmission holding portion 13 as in the first embodiment. The guide walls 22a are sequentially arranged. At this time, the transmission fitting hole 26 b of the transmission fitting portion 26 of the transmission member 10 is made to correspond to each transmission shaft insertion portion 53 provided in the pair of guide walls 22 a of the shaft support portion 22.

  That is, the center of the transmission fitting hole 26b of the transmission member 10 is a semicircular center located at the lower end of the first transmission notch 53a of the shaft support 22 and the upper end of the second transmission notch 53b. Corresponding to the center of the semi-circular shape located at. In this state, the one end of the transmission holding shaft 24 is located at the lower end of each first transmission notch 53a of the plurality of transmission holding parts 13 from one end side of the transmission holding member 51. And sequentially inserted into the semicircular portion located at the upper end of each second transmission notch 53b and sequentially into each transmission fitting hole 26b of the plurality of transmission members 10.

  Then, one end portion of the transmission holding shaft 24 is inserted into the transmission shaft insertion portion 53 of the shaft support portion 22 located at the other end portion of the transmission holding member 51. Thereby, the transmission holding shaft 24 has a semicircular portion located at the lower end of each first transmission notch 53a in each of the plurality of transmission holding parts 13, and each second transmission notch in the plurality of transmission holding parts 13. It is alternately sandwiched from above and below by a semicircular portion located at the upper end of the portion 53b. In this state, the transmission holding shaft 24 is attached to the transmission holding member 51 over the entire length in the key arrangement direction, and the transmission holding shaft 24 is arranged in a state where the plurality of transmission members 10 are arranged in parallel along the key arrangement direction. Attached to be rotatable.

  According to the action mechanism 3 of the electronic keyboard musical instrument of the second embodiment as described above, the hammer shaft insertion portion 52 provided in each of the plurality of hammer holding portions 15 has the same effects as the first embodiment. A first hammer notch 52a opened on the lower side of the hammer holding part 15 and a second hammer notch 52b opened on the upper side of the hammer holding part 15, the first hammer notch 52a; Since the second hammer notch portions 52b are alternately provided in the plurality of hammer holding portions 15, when the plurality of hammer holding portions 15 are molded at once with a hammer molding die, the hammer molding die The structure of the mold can be simplified, thereby improving the productivity and reducing the cost as compared with the first embodiment.

  That is, in this hammer molding die, a first hammer notch portion provided on each shaft support portion 32 of the plurality of hammer holding portions 15 with a dividing line (parting line) between the upper die and the lower die. Since a semicircular center located at the upper end of 52a and a semicircular center located at the lower end of the second hammer notch 52b can be installed, a slide core is used. In addition, the upper mold can mold the upper side from the semicircular center of the first hammer notch 52a, and the lower mold lower than the semicircular center of the second hammer notch 52b. Can be molded.

  Further, according to the action mechanism 3 of the electronic keyboard instrument of the second embodiment, the transmission shaft insertion portion 53 provided in each of the plurality of transmission holding portions 13 is opened to the lower side of the transmission holding portion 13. It has a transmission notch 53a and a second transmission notch 53b opened above the transmission holding part 13, and has a plurality of transmission holds for the first transmission notch 53a and the second transmission notch 53b. Since the structure is provided alternately in the portion 13, when the plurality of transmission holding portions 13 are molded at once with the transmission molding die, the structure of the transmission molding die can be simplified. Productivity can be improved and costs can be reduced as compared with the twelfth embodiment.

  That is, in this transmission molding die, the first transmission notch portion provided on each shaft support portion 22 of the plurality of transmission holding portions 13 is divided lines (parting lines) between the upper die and the lower die. Since a semi-circular center located at the upper end of 53a and a semi-circular center located at the lower end of the second transmission notch 53b can be installed, a slide core is used. In addition, the upper mold can mold the upper side of the semicircular center of the first transmission notch 53a, and the lower mold can lower the semicircular center of the second transmission notch 53b. Can be molded.

  In the second embodiment described above, of the pair of guide walls 32a in each of the plurality of hammer holding portions 15, the first hammer notch 52a of the hammer shaft insertion portion 52 is provided on one guide wall 32a, and the other Although the case where the second hammer notch portion 52b of the hammer shaft insertion portion 52 is provided on the guide wall 32a has been described, the present invention is not limited thereto, and the hammer holding portions 15 adjacent to each other among the plurality of hammer holding portions 15 are described. Alternatively, the first hammer notch 52a and the second hammer notch 52b may be alternately provided.

  Similarly, in 2nd Embodiment mentioned above, the 1st transmission notch part 53a of the transmission shaft insertion part 53 is provided in one guide wall 22a among a pair of guide walls 22a in each of the some transmission holding | maintenance part 13, and the other The guide wall 22a is provided with the second transmission notch 53b of the transmission shaft insertion portion 53. However, the present invention is not limited to this, and among the plurality of transmission holding portions 13, the transmission holding portions adjacent to each other. The configuration may be such that the first transmission notch 53a and the second transmission notch 53b are alternately provided for every thirteen.

  In each of the first and second embodiments described above, the hammer member 11 is held on the hammer holding members 14 and 50 by the hammer holding shaft 34, and the transmission member 10 is transferred to the transmission holding members 12 and 51 by the transmission holding shaft 24. Although the transmission member 10 is not necessarily held by the transmission holding members 12 and 51 by the transmission holding shaft 24, the transmission member 10 is held by the transmission holding members 12 and 51 in another structure. You may comprise.

  In each of the first and second embodiments described above, the transmission support rail 17 and the hammer support rail 18 are described as having a length extending over the entire length of the key 2 in the arrangement direction. For example, the transmission support rail and the hammer support rail may be divided into a plurality of parts and arranged over the entire length in the arrangement direction of the keys 2.

  In this case, the transmission support rail and the hammer support rail may be divided into four at every arrangement interval of the plurality of support members 20, or may be divided into half of the total length in the arrangement direction of the keys 2. It may be divided into two. Similarly, the lower limit stopper rail 39 and the upper limit stopper rail 41 may be divided into four at intervals of arrangement of the plurality of support members 20 or may be divided into half of the total length in the arrangement direction of the keys 2. It may be further divided into three.

  Furthermore, in each of the first and second embodiments described above, a plurality of transmission holding portions 13 are formed integrally with the transmission holding members 12 and 51 so as to correspond to about ten keys 2, respectively. Although the case where the plurality of hammer holding portions 15 are integrally formed corresponding to about 10 keys 2 is described in FIG. 50, the present invention is not limited to this. For example, a plurality of transmission holding portions 13 and a plurality of hammer holding portions 15 are provided. Each of them may be integrally formed to correspond to about 20 keys 2, and is not limited thereto, and may be formed integrally to correspond to about 5 keys 2, and the number thereof is free. It may be selected and formed integrally.

As mentioned above, although several embodiment of this invention was described, this invention is not restricted to these, The invention described in the claim and its equal range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
The invention according to claim 1 is a plurality of keys arranged in parallel, and a plurality of transmission members arranged corresponding to each of the plurality of keys and rotating in response to a key pressing operation of each of the plurality of keys. And an action load applied to the key being pressed by rotating according to the rotation of the transmission member corresponding to the key pressing operation. A plurality of hammer members to be applied, a plurality of hammer holding portions integrally formed along the arrangement direction of the plurality of keys to hold each of the plurality of hammer members, and each of the plurality of hammer holding portions A hammer holding member having a correspondingly provided hammer shaft insertion portion, and inserted into the hammer shaft insertion portion, and each of the plurality of hammer members is attached to be rotatable. It is an action mechanism of the keyboard apparatus according to claim which comprises a Nma holding shaft, a.

  The invention according to claim 2 is a plurality of keys arranged in parallel, and a plurality of transmission members arranged corresponding to each of the plurality of keys and rotating in response to a key pressing operation of each of the plurality of keys. And an action load applied to the key being pressed by rotating according to the rotation of the transmission member corresponding to the key pressing operation. In order to hold each of the plurality of hammer members to be applied and the plurality of transmission members, a plurality of transmission holding portions integrally formed along the arrangement direction of the plurality of keys, and each of the plurality of transmission holding portions A transmission holding member having a corresponding transmission shaft insertion portion, and a transmission holding shaft that is inserted into the transmission shaft insertion portion and is attached to each of the plurality of transmission members so as to be rotatable. This It is an action mechanism of the keyboard device according to claim.

  According to a third aspect of the present invention, in the action mechanism of the keyboard device according to the first aspect, each of the plurality of hammer members has a hammer fitting portion provided with a hammer fitting hole into which the hammer holding shaft is inserted. Each of the plurality of hammer holding portions has a pair of guide walls into which the hammer fitting portion is inserted, and the hammer shaft insertion portions are provided on the same axis in the pair of guide walls. It is the action mechanism of the keyboard device characterized.

  According to a fourth aspect of the present invention, in the action mechanism of the keyboard device according to the first or third aspect, the hammer shaft insertion portion provided in each of the plurality of hammer holding portions is below the hammer holding portion. A first hammer notch portion opened to the side, and a second hammer notch portion opened to the upper side of the hammer holding portion; the first hammer notch portion and the second hammer notch portion; Is an action mechanism of a keyboard device, wherein the plurality of hammer holding portions are alternately provided.

  According to a fifth aspect of the present invention, in the action mechanism of the keyboard device according to the second aspect, each of the plurality of transmission members includes a transmission fitting portion provided with a transmission fitting hole into which the transmission holding shaft is inserted. Each of the plurality of transmission holding portions has a pair of guide walls into which the transmission fitting portion is inserted, and the transmission shaft insertion portions are provided on the same axis in the pair of guide walls. It is the action mechanism of the keyboard device characterized.

  The invention according to claim 6 is the action mechanism of the keyboard device according to claim 2 or 5, wherein the transmission shaft insertion portion provided in each of the plurality of transmission holding portions is below the transmission holding portion. A first transmission cutout portion opened to the side, and a second transmission cutout portion opened above the transmission holding portion, the first transmission cutout portion and the second transmission cutout portion, Is an action mechanism of a keyboard device, wherein the plurality of transmission holding portions are alternately provided.

  The invention described in claim 7 is a keyboard instrument comprising the action mechanism of the keyboard device described in any one of claims 1 to 6.

DESCRIPTION OF SYMBOLS 1 Keyboard apparatus 2 Key 3 Action mechanism 10 Transmission member 11 Hammer member 12, 51 Transmission holding member 13 Transmission holding part 14, 50 Hammer holding member 15 Hammer holding part 17 Transmission support rail 18 Hammer support rail 20 Support member 22 Shaft support part 22a Guide walls 22b, 53 Transmission shaft insertion portion 24 Transmission holding shaft 26 Transmission fitting portion 26b Fitting hole 26c Slit groove 31 Hammer protrusion 32 Shaft support portion 32a Guide wall 32b, 52 Hammer shaft insertion portion 34 Hammer holding shaft 35 Hammer portion 36 hammer arm 37 hammer fitting portion 37b fitting hole 37c slit groove 38 lower limit stopper 41 upper limit stopper 43 switch board 45 rubber switch 52a first hammer notch portion 52b second hammer notch portion 53a first transmission notch portion 53b first 2 transmission cut Notch

Claims (9)

A plurality of keys arranged in parallel ;
A plurality of hammer member for applying an action load to the key being pressed key operation,
And Ruha Nma holding member to hold the respective said plurality of hammer members,
And hammers holding shaft wherein is inserted into the hammer holding member, and each of the plurality of hammer members Ru Tei mounted for rotational movement,
An action mechanism for a keyboard device, comprising: The action mechanism of the keyboard device according to claim 1, wherein the hammer holding member includes a first hammer cutout portion opened in a first direction and a second hammer cutout opened in a direction different from the first direction. An action mechanism for a keyboard device, comprising: a notch portion. In action mechanism of a keyboard apparatus according to 請 Motomeko 2, and characterized in that the pre-Symbol the first hammer notch portion and the second hammer notch are provided alternately in front KIHA Nma holding member An action mechanism for the keyboard device. In action mechanism of a keyboard device according to any one of claims 1 to 3, each of the plurality of hammer members are keyboard apparatus characterized that you have a hammer fitting hole in which the hammer holding shaft is inserted Action mechanism. A plurality of keys arranged in parallel;
A plurality of transmission members arranged corresponding to each of the plurality of keys, and rotating in response to a key pressing operation of each of the plurality of keys ;
And transmitting a holding member for holding each pre-Symbol plurality of transmission members,
Is inserted into the transmission holding member, and each of the plurality of transmission member and rotate operatively attached Tei Ru transmitted holding shaft,
An action mechanism for a keyboard device, comprising: 6. The action mechanism of the keyboard device according to claim 5, wherein the transmission holding member includes a first transmission cutout portion opened in a first direction and a second transmission cutout opened in a direction different from the first direction. An action mechanism for a keyboard device, comprising: a notch portion. In action mechanism of a keyboard apparatus according to 請 Motomeko 6, and characterized in that the pre-SL and the first transmission notch second transmission notch are provided alternately in front Kiden us holding member An action mechanism for the keyboard device. In action mechanism of a keyboard apparatus according to any one of claims 5 to 7, wherein each of the plurality of transmission members, a keyboard apparatus characterized that you have a transmission fitting hole in which the transmitting shaft member is inserted Action mechanism. Keyboard instrument, characterized in that it comprises an action mechanism of a keyboard apparatus according to any one of claims 1 to 8.

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