JPH071493U - Electronic musical instrument keyboard device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a keyboard device for an electronic musical instrument that can reliably press all keys without deteriorating the key touch even if the height of the upper surface of the keys of the keyboard varies. [Structure] A key 3 is swingably supported by a fulcrum 4 on a reed 2 provided in a keyboard chassis, and a key retainer 12 is provided above the key 3. The key presser 12 is attached to a fixed leg fixed to the keyboard chassis, and is a support member 13 that straddles all the keys 3.
And an elastic member 15 fixed to the support member 13. The elastic member 15 has a plurality of pairs of protrusions 14 a and 14 b, and each pair of protrusions 14 a and 14 b abuts on a portion directly above the fulcrum of each key 3, that is, on both sides of the insertion portion of the balance pin 16, and above the key 3. To prevent swinging to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a keyboard device for electronic musical instruments such as electronic pianos and electronic organs.

[0002]

[Prior art]

 The Applicant previously attached the reed center b to the keyboard chassis a as shown in FIGS. 4 and 5, and swingably supports the key d at a fulcrum c on the reed center b. The swinging of the key d is performed by a restoring device i composed of a lever f swinging around a lever fulcrum e behind it, a weight g, and a spring h. In a keyboard device of an electronic musical instrument provided with a key presser j for preventing upward swinging, one end of the key presser j is fixed to an upper end of a fixed leg k standing upright from a fulcrum c of a keyboard chassis a. The fixing member 1 extending from the rear to the front and the elastic member m made of a cushion such as felt and having the same cross-sectional shape and provided at the tip of the fixing member l improve the touch feeling of the key d as compared with the conventional one. Along with this, the space above the key d is reduced to make the keyboard compact. He proposed what may Mel possible.

[0003]

[Problems to be solved by the device]

 However, the above-described keyboard device cannot reliably press the key d when the top surface height of the key d of the keyboard varies due to variations in the processing of the key retainer j and adjustment of the stroke of the key by balance punching. was there. In order to prevent this, if the key retainer j is attached so as to bend the elastic member m sufficiently, there is a drawback that the touch of the key d is aggravated.

The present invention relates to an improvement of the previously proposed keyboard device, and an object thereof is to provide a keyboard device for an electronic musical instrument that solves the above-mentioned drawbacks.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention supports a key swingably by a fulcrum in the reed provided on a keyboard chassis of an electronic musical instrument, and swings the key upward and upward. In a keyboard device provided with a key retainer for preventing the key retainer, the key retainer includes a support member fixed to a fixed leg provided on the keyboard chassis and straddling a plurality of keys, and a plurality of protrusions supported by the support member and abutting on each key. And an elastic member having.

[0006]

[Action]

 According to the invention of claim 1, since the plurality of projections formed on the elastic member of the key retainer press the upper surfaces of the plurality of keys respectively, the key touch does not deteriorate significantly even if the key upper surfaces of the keyboard vary. It is possible to press the key securely and prevent the key from swinging upward.

According to the second aspect of the present invention, since the plurality of pairs of protrusions formed on the elastic member of the key retainer are brought into contact with the portions directly above the fulcrums of the plurality of keys, respectively, the key retainer is used to reliably secure the key. The key touch does not deteriorate even if you hold it down.

[0008]

【Example】

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

1, FIG. 2 and FIG. 3, 1 is a keyboard chassis, 2 is a metal or plastic reed directly attached to the keyboard chassis 1, and 3 is a rocking point on a fulcrum 4 on the reed center 2. A self-supporting key, 5 is a returning device for returning the swing of the key 3, 6 is a screw type actuator screwed in front of the fulcrum 4 of the key 3, and 7 is a key provided on the keyboard chassis 1. This is a sound switch, and the restoring device 5 is composed of a lever 9, a weight 10 and a spring 11 which are swingable around a lever fulcrum 8 supported by the keyboard chassis 1. When the key 3 is pushed forward by the finger and swings, the actuator 6 pushes the switch 7 to start sounding.

When the finger is released from the key 3, the key 3 is returned to its original position by the restoring force of the restoring device 5 which is applied by being pushed by the finger.

The key retainer 12 for preventing the key 3 from swinging upward when the key 3 is pressed and released, is fixed to the support member 13 having a length that extends over the entire key 3 and the support member 13, for example. The support member 13 is attached to the upper end of a fixed leg 16 whose lower part is fixed to the keyboard chassis 1 behind the fulcrum 4, and is made up of an elastic member 15 having a plurality of protrusions 14 that come into contact with each key 3. .

The plurality of protrusions 14 are made of a cushion so that the plurality of pairs of protrusions 14 a and 14 b respectively come into contact with the portions directly above the fulcrum of the plurality of keys 3, that is, two positions on both sides of the insertion portion of the balance pin 17. It is formed on the member 15.

According to the key retainer 12, the pair of protrusions 14 a and 14 b can press the portion directly above the fulcrum of each key 3 without being squeezed by the balance pin 17, and can individually press the keys 3 one by one. Therefore, even if the height of the keys 3 on the keyboard varies, all the keys 3 can be reliably pressed and the key touch is not deteriorated.

In this embodiment, the protrusion 14 of the key retainer 12 is in contact with the portion directly above the fulcrum of the key 3, but may be in contact with the portion before the fulcrum of the key 3 as in the conventional key retainer. Even with this configuration, even if the height of the keys 3 on the keyboard varies, all the keys 3 can be reliably pressed and the key touch does not deteriorate so much.

Reference numeral 18 is an actuator adjustment window formed laterally in front of the fulcrum 4 of the key 3, 19 is a front pin fixed to a reed 20 attached to the keyboard chassis 1, and 21 is a key 3 of the key 3. It is a weight embedded for inertia adjustment.

[0016]

[Effect of device]

 According to the first and second aspects of the present invention, the protrusions formed on the elastic member of the key press can press the keys one by one independently, so that even if the height of the upper surface of the key of the keyboard varies, the key touch is not so much. It has the effect of being able to hold all keys without deteriorating.

Further, in the invention according to claim 2, since the plurality of pairs of projections formed on the elastic member of the key retainer are in contact with the portions just above the fulcrum of the plurality of keys, respectively, the key retainer is used to reliably press the key. Also has the effect of not worsening the key touch.

[Brief description of drawings]

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

FIG. 2 is a partial perspective view of the key retainer of the above embodiment.

FIG. 3 is an exploded perspective view of a main part of the above embodiment.

FIG. 4 is a partially cutaway side view of a keyboard device of an electronic musical instrument that the applicant previously proposed.

5 is a perspective view of a main part of the keyboard device shown in FIG.

[Explanation of symbols]

1 keyboard chassis 2 reed 3 key 4 fulcrum 12 key retainer 13 support member 14 protrusion 15 elastic member 16 fixed leg

Claims (2)

[Scope of utility model registration request] 1. A keyboard device in which a key is swingably supported by a fulcrum in a reed provided on a keyboard chassis of an electronic musical instrument and a key retainer is provided above the key to prevent the key from swinging upward. In the above, the key retainer includes a support member fixed to a fixed leg provided on the keyboard chassis and straddling a plurality of keys, and an elastic member having a plurality of protrusions supported by the support member and abutting each key. The keyboard device of the characteristic electronic musical instrument. 2. The elastic member of the key retainer has a plurality of pairs of protrusions, and the plurality of pairs of protrusions are in contact with the portions directly above the fulcrums of the plurality of keys, respectively. Electronic musical instrument keyboard device.