JPH0440237Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a pedal mechanism for an electric piano.

(Prior Art) Conventionally, in the pedal mechanism of an electric piano, as shown in FIG. The tip of the pedal d is pivotally connected to the base a, and the other end is connected to the middle of the pedal d via a bolt e and a screw f, and the other end is connected to the lever d.
Generally, a return spring g is installed between the fulcrum and the fulcrum.

(Problems to be solved by the invention) The pedal mechanism of the conventional electric piano described above requires a large number of parts because the balance b and the pedal d must be supported respectively, and the structure is complicated. There is an inconvenience that rattling is likely to occur due to wear, and the height of the pedal section requires a length corresponding to the difference in height between one end and the other end of the balance b when the pedal d is depressed. There was an inconvenience that it could not be made thinner.

The purpose of the present invention is to solve these conventional inconveniences.

(Means for Solving the Problems) The present invention is a round bar member whose one end is bent into an L shape, and is rotatably supported by inserting the round bar member into the through holes of a plurality of support members fixed on a base. Additionally, a pedal is fixed to the round bar member, and a push-up bar connected to a damper or the like is connected to the tip of the bent portion of the member.

(Example) 2 to 5 show an embodiment of the present invention.

In the drawings, reference numeral 1 denotes a pedal manufactured by, for example, sheet metal processing of a plate material, the pedal 1 is fixed to a round bar member 2 with, for example, screws, and this round bar member 2 is a support member fixed to, for example, three locations on a base 3. 4 and is rotatably supported.

For this member 2, it is preferable to use a material with low abrasion, such as copolymer polyacetal, but wood may also be used. In this case, a member with less wear and good lubricity is inserted between the through hole 5 of this member 2 and the round bar member 2.

One end of the round bar member 2 was bent into an L-shape, and the lower end of a push-up rod 7 connected to a damper (not shown) was connected to the tip of the bent portion 6. Reference numeral 8 denotes a torsion spring, one end of which is fixed to one end of the support member 2, and the other end fixed to the pedal 1, and when the pedal 1 is released, the round bar member 2 is rotated by the deflection force of the spring 8. This is to return the push-up rod 7 and pedal 1 to their original positions.

The base 3 on which the support member 4 is mounted is the bottom plate of the case 9 that houses the pedal section, and its ends are fixed to the lower parts of the legs 10 on both sides of the piano.

Next, to explain its operation, when the pedal 1 is depressed, the round bar member 2 rotates against the spring force of the torsion spring, and the push-up bar 7 connected to the tip of the bending part 6 rises. Then, the damper connected to this operates.

The round bar member 2, which rotates when the pedal 1 is depressed, is inserted into the through hole 5 of the support member 2 and is rotatably supported, so there is less rattling due to wear compared to the conventional balance system, and the number of parts is also reduced. few.

Furthermore, it is sufficient that the height of the case 9 that houses the pedal section is equivalent to the upward movement length of the push-up rod 7 when the pedal 1 is depressed, and therefore, compared to the conventional balance system. It only takes half the length and can be made thin.

FIG. 4 shows an electric piano equipped with the pedal mechanism described above, and FIG. 5 is a rear view thereof.

Since the case 9 of this electric piano can be made thin, the distance between the upper surface of the case 9 and the lower surface of the case 11 housing the stringing frame is wide, giving the piano a light and airy appearance.

(Effects of the invention) The present invention allows a round bar member with one end bent into an L-shape to be rotatably supported by inserting it into the through holes of a plurality of support members fixed on a base, and the round bar member is rotatably supported. Since the pedal is fixed to the member and the push-up rod connected to the damper etc. is connected to the tip of the bent part of the member, the structure is simple with fewer parts and there is less rattling due to wear on the support member of the round bar member. Furthermore, since the thickness of the pedal section in the height direction can be made thinner, it has the effect of giving a light and light appearance.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional pedal mechanism, FIG. 2 is a side view of an embodiment of the present invention, and FIG. 3 is a perspective view.
FIG. 4 is a perspective view of an electric piano using the pedal mechanism of the present invention, and FIG. 5 is a rear view thereof. 1...Pedal, 2...Round bar member, 3...Base,
4...Supporting member, 5...Through hole, 6...Bending portion, 7
... Thrust-up rod, 8... Torsion spring, 9...
Case, 10...legs.

Claims (1)

[Scope of utility model registration request] A round bar member with one end bent into an L-shape is inserted into the through holes of a plurality of support members fixed on a base and supported rotatably, and a pedal is fixed to the round bar member. A pedal mechanism for an electric piano characterized by connecting a push-up rod connected to a damper or the like to the tip of a bent part.