JPS6116642Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a drawbar device for an electronic organ.

(Prior Art) FIG. 1 shows an exploded view of an example of a drawbar device of a conventional electronic organ.

In FIG. 1, a is a slide volume or a slide switch fixed to a chassis b, and its slider c is passed through a long hole d in the chassis B. On the other hand, the slide bar f, which has a knob e on one end, can be moved in the front-back direction (indicated by the arrow) by inserting its left and right ends g into the guide groove i of a guide bush h rotatably provided on the back surface of the chassis b. Attach to.
Then, the slider c is inserted into the hole j of this slide bar f.
Insert the tip of the

FIG. 2 shows an example of a conventional variable resistor.

In the figure, k is a shaft connected to the slider, and the shaft k is made to protrude from the hole m of the case l of the resistor body in the same direction as the sliding direction of the slider (not shown).

(Problem to be solved by the invention) In the first diagram, the slide volume (or slide switch) a and the slide bar f are separate parts, so they are related to each other and fixed separately. As a result, the structure is complicated and assembly is troublesome, which is not desirable in terms of cost.

The one shown in the second figure is integrated as a variable resistor, but the case l must have a complicated shape with a hole m for guiding the shaft K, and the slider must be attached to the shaft K. Since it must be attached using a tool, it has the drawbacks of high cost and poor assembly workability.

The object of the present invention is to provide a drawbar device for an electronic organ that does not have any more drawbacks than the prior art.

(Means for Solving the Problems) The present invention provides a case having a U-shaped cross section, and a sliding portion along the length of the case having a length approximately equal to the height from the bottom of the case to the opening edge. A slide bar having a movable contact piece fixed thereto is inserted into a thick recess formed in the sliding part, and the sliding part and the movable contact piece of the slide bar are covered with the upper opening of the case. The present invention is characterized in that a substrate on which a resistor that comes into contact with the movable contact piece is arranged is fixed.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In FIG. 3, reference numeral 1 denotes a substrate made of an insulating material with a resistor 2 disposed on its back surface, and terminals 3 are provided at both ends of the resistor 2. 4 is a slide bar molded from synthetic resin, and 5 is a case having a U-shaped cross section. The sliding portion 4a of the slide bar 4 inserted along the length direction of the case 5 extends from the bottom surface 5a of the case 5 to the opening edge 5b.
A recess 4b is formed in the middle of the recess 4b, and the hole 6a of the movable contact piece 6 is fitted into the protrusion 4c formed in the recess 4b. The movable contact piece 6 is fixed to the slide bar 4 by crushing it by heating or the like.

This slide bar 4 inserts its sliding portion 4a into the case 5, and inserts the upper opening 5c of the case 5 into the substrate 1.
The notches 1a provided at the left and right ends of the substrate 1 are fitted into the protruding pieces 5d of the opening edge 5b of the case 5, and the protruding pieces 5d are bent to fix.
At this time, the movable contact piece 6 is brought into pressure contact with the resistor 2 of the substrate 1 and the conductor 7 arranged in parallel thereto.
A sliding output terminal 8 is provided at one end of the bar, from which an output signal corresponding to the sliding of the slide bar 4 can be taken out. In addition, 4d is a sliding stopper part.

In this embodiment, the movable contact piece 6 is in sliding contact with the resistor 2 itself on the board 1, but the board 1 is provided with a plurality of resistors and fixed contacts connected to the resistors, and each fixed contact has a movable contact. The pieces may be configured to slide.

(Effect of the invention) The present invention has a case having a U-shaped cross section, and a sliding portion having a thick wall along the length direction of the case and having a length approximately equal to the height from the bottom of the case to the opening edge. Since the slide bar with the movable contact piece fixed to it is inserted into the recess formed in the sliding part, the structure of the case is simpler than the conventional case, and the number of manufacturing steps is reduced. Since no member (mounting stand, etc.) to be fixed to the slide bar is required, the number of parts and assembly steps are small, resulting in cost reduction.

[Brief explanation of the drawing]

Figure 1 is an exploded view of a conventional electronic organ drawbar device, Figure 2 is a perspective view of a conventional variable resistor,
FIG. 3 shows an exploded view of an embodiment of the present invention. 1... Board, 2... Resistor, 3... Terminal, 4...
...Slide bar, 5...Case, 6...Movable contact piece, 7...Conductor.

Claims (1)

[Scope of utility model claims] A recess formed in a case having a U-shaped cross section, in which a sliding part is formed in a thick wall along the length direction of the case and has a length approximately the same as the height from the bottom surface of the case to the opening edge, and the sliding part is formed in the sliding part. A slide bar having a movable contact piece fixed thereto is inserted into the board, and a resistor is disposed in the upper opening of the case to cover the sliding part of the slide bar and the movable contact piece and come into contact with the movable contact piece. A drawbar device for an electronic organ, characterized by having fixed.