JPH0596890U - Hammer fixing device for electronic musical instrument keyboard - Google Patents

Abstract

(57) [Abstract] [Purpose] In a keyboard device of an electronic musical instrument of a type having a hammer above the rear part of the key, the hammer can be fixed without separately providing a hammer fixing mechanism, and the structure is simple and the keyboard device is large. There is no change. [Structure] A key 3 is swingably supported on a plurality of fulcrums 6 of a keyboard chassis 2 provided on an upper side of a shelf 1 of an electronic musical instrument, and a hammer 7 is swung by the key 3 above a rear portion of each key 3. And a stopper plate 10 and a stopper cushion 8 for restricting the upward swing of the hammers 7, respectively.
Is rotatable about a rotation support shaft 13 and is movable up and down, and when the electronic musical instrument is transported or moved, the stopper cushion 8 presses the hammer 7 against the key.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for fixing a hammer of a keyboard device of an electronic musical instrument such as an electronic piano.

[0002]

[Prior Art]

 Conventionally, in this type of keyboard device, a key c, which is swingably provided at a fulcrum b on a shelf board a, as shown in FIGS. 4 and 5, is inserted into the shelf board a to insert the key c. The shaft d extending upwards is pulled down by the lever e and fixed by the rail f attached to the shaft d so as to prevent the key c from being damaged by vibration or shock when the musical instrument is transported or moved. Things are known.

Further, as a keyboard device of this type, a hammer swingable by the key is provided at the rear of the key, and an inertial force is applied to the key by the swing of the hammer to improve the touch feeling of the key. It is also known (Japanese Utility Model Publication No. 2-149990).

[0004]

[Problems to be solved by the device]

 The lock device having a mechanical structure as shown in FIG. 1 has a complicated structure, requires many parts, and cannot be easily assembled. Also, if this fixing device having a mechanical structure is applied to a keyboard device having a hammer above the rear part of the key, the size of the keyboard device in the upward direction becomes large, which is not preferable.

The present invention has an object to provide a keyboard device for an electronic musical instrument having a hammer above a rear portion of a key so that the hammer can be fixed without complicating the structure and increasing the size. .

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a key swingably supported on a plurality of fulcrums provided on a shelf plate of an electronic musical instrument, and a hammer swingable by the key above the rear of each key. In a keyboard device of an electronic musical instrument, each of which is provided with a rocking restricting member for restricting the upward rocking of each hammer, the rocking restricting member is movable up and down by a rotation about a support shaft. The downward swinging control member is characterized in that the hammer is pressed against the key.

[0007]

[Action]

 When the electronic musical instrument is transported or moved, the swinging restricting member that restricts the swinging of the hammer upward is rotated around the support shaft to move downward, and the hammer is pressed against the key. Thus, even if a shock is applied to the musical instrument during transportation, the hammer is pressed against the key, so that there is no risk of damage to the hammer support member and rocking of the key can be prevented. When the electronic musical instrument has been transported, the rocking restricting member is rotated in the opposite direction to move upward, and is fixed at a position where the original function is achieved. Thus, when playing, the hammer rocked by the key rocks and abuts on the rocking restricting member to restrict the rocking range.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 is a shelf plate of an electronic musical instrument, 2 is a metal keyboard chassis that constitutes a keyboard device fixed on the shelf plate 1, and 3 is a reed fixed to the keyboard chassis 2. 1 shows a wooden key swingably supported by a fulcrum 6 composed of a center 4 and a pin 5 planted therein. A plurality of the keys 3 are arranged to form a keyboard, and a hammer 7 which is rocked up and down by the rocking of the keys 3 is provided above the rear part of each key 3, and the hammer 7 rocks the key 3. Inertia is added to the movement. Reference numeral 8 denotes a stopper cushion that restricts the swinging of the hammer upward and loosens the stopper. The stopper cushion 8 is a stopper plate 10 having a length corresponding to the width of the key 3 fixed to the upper end of the support member 9. It is fixed to the lower surface, and together with the stopper plate 10 constitutes a swing restricting member for the hammer 7. Reference numeral 11 denotes a frame extending in the arrangement direction of the keys 3 in order to provide a cushion 12 for restricting the upward movement of the keys.

The support member 9 is composed of a fixed portion 9a fixed to the keyboard chassis 2 and a rotating portion 9b, and the rotating portion 9b includes a plurality of plate members 9b-arranged in the key arrangement direction. 1, 9b-2 ... Each of the plate members 9b-1, 9b-2, ... Is rotatable by a rotation support shaft 13 supported by a fixed portion 9a, and the stopper plate 10 is fixed to each tip thereof. Of the plurality of plate members 9b-1, 9b-2 ..., the plate members 9b-1 at both ends (the plate member at the other end is not shown) are extended downward, and the extension 14 is formed on the shelf plate 1. It is inserted through the hole 15. A plate piece 16 having a horizontal portion located away from the lower surface of the shelf board 1 and a slant portion having a narrower distance from the lower surface toward the rear is fixed to the lower portion of the shelf board 1. The lower end bent portion 17 of the plate member 9b-1 of the rotating portion 9b comes into contact with the piece 16, and is inserted into the slit 18 formed in the plate piece 16 in the lengthwise direction to form the lower end bent portion 17. The plate member 9b-1 is fixed to the plate piece 16 by tightening the bolt 19 screwed into the screw hole 20.

Thus, when playing, as shown in FIGS. 1 and 2, the plate member 9b-1 is fixed to the horizontal portion of the plate piece 16, and the stopper plate 10 and the stopper cushion 8 of the rocking restricting member are attached. Rotate upwards and place in place. When carrying and moving the electronic musical instrument, loosen the bolt 19 from below, grasp the head of the bolt 19 to move the plate material 9b-1 toward the inclined portion of the plate piece 16, and then tighten the bolt 19 again to return to the sputter. The plate 10 and the stopper cushion 8 move downward, and the stopper cushion 8 is pressed against the hammer 7. The pressure contact force can be adjusted by the position of the plate member 9b-1.

[0012]

[Effect of the device]

 As described above, according to the present invention, the swing restricting member of the hammer can be moved up and down by the rotation about the support shaft, and the hammer is pressed against the key by the descending swing restricting member. Therefore, it is not necessary to separately provide a hammer fixing mechanism, and there is an effect that the structure is simple and the keyboard device is not upsized.

[Brief description of drawings]

FIG. 1 is a cutaway side view of an embodiment of the present invention.

FIG. 2 is a rear perspective view of a main part of the above embodiment.

FIG. 3 is a cutaway side view of the above embodiment in an actuated state.

FIG. 4 is a cutaway side view of a conventional example.

5 is a perspective view of the main part of FIG.

[Explanation of symbols]

1 Shelf Board 2 Keyboard Chassis 3 Key 6 Support 7 Hammer 8 Stopper Cushion 9 Supporting Member 9a Fixed Part 9b Rotating Part 10 Stopper Plate 13 Rotating Spindle 14
Extension part 15 Through hole 16 Plate piece 17
Lower end bent part 18 Slit 19 Bolt 20
Screw hole

Claims (2)

[Scope of utility model registration request] 1. A key is swingably supported on each of a plurality of fulcrums provided on a shelf board of an electronic musical instrument, and a hammer swingable by the key is provided above a rear portion of each key. In a keyboard device for an electronic musical instrument, which is provided with a rocking restricting member for restricting its upward rocking, the rocking restricting member is vertically movable by pivoting about a support shaft, and is moved downward. A hammer fixing device in a keyboard device of an electronic musical instrument, characterized in that a motion restricting member presses a hammer against a key. 2. A support member for supporting the rocking restricting member is rotatably supported on a support shaft, and an end portion of the support member is inserted into a through hole provided in the shelf plate, and the through hole is provided. 2. A hammer fixing device for a keyboard device of an electronic musical instrument according to claim 1, wherein the supporting member is rotated by a protruding portion from which the rocking restricting member is moved up and down.