JPS6022511Y2 - Multiple interlocking push button switch - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a multiple interlocking pushbutton switch.

Hereinafter, the present invention will be explained according to an embodiment shown in Figs. 1 and 2. In the figures, 1 indicates a frame 2, a body, 2...
. . . are push-button switches installed in an appropriate number on the frame 1, and the steps 3a and notches 3b provided on the cover 3 of each push-button switch are connected to the periphery of the U-shaped groove 4 of the frame 1. By bending the small legs 5 of the frame 1 after engaging the push button switches 2...
・ is attached to the frame 1.

Reference numeral 6 denotes a push rod of the push button switch 2, which is installed in the cover 3 so as to be able to slide by a predetermined amount.A coil spring 8 wound between the cover 3 and the locking washer 7 keeps each push rod 6 in place at all times. It is being oppressed in the direction of arrow A in Figure 2.

Reference numeral 9 denotes a movable contact piece housed in a small chamber 10 provided in the push rod, which connects and separates from the fixed contact piece 12 embedded in the insulating substrate 11 attached to the cover 3. It is free.

Reference numeral 13 denotes an interlocking cam plate for holding any selected push rod 6 among the push rods 6 in the pressing position, which connects the bottom of the frame 1 and each push button. Switch 2...
It is attached so that it can slide only in the longitudinal direction between... and is constantly pressed in the direction of arrow B in Fig. 2 by a leaf spring 14 attached to the end of the frame 1. ...is energized.

The interlocking cam plate 13 includes a single metal plate 15, and a cam engagement portion 16 made of plastic resin, which is fixed to the metal plate 15 by means such as an insert bottom shape.・Each cam engaging part 1:6...... is covered by the cover 3 of each push button switch 2...
The cam portion 17 formed integrally with each of the push rods 6 by inserting the notch 3c of... . . . are configured so as to come into contact with each other.

That is, in FIG. 1, the push rod 6 of the push button switch 2 at the right end is held in the pressed position, and from this state, for example, if the push rod 6 of the push button switch 2 in the middle of the figure is pressed,
Due to the cam ridge 17a of the cam portion 17 of the middle press rod 6, the interlocking cam plate 13 moves to the right in the figure against the elastic force of the leaf spring 14, and the interlocking cam plate 13 moves to the right in the figure, and the cam portion 17 of the right end press rod 6 and the interlocking cam The plate 13 is disengaged from the cam engaging portion 16, and the right end press rod 6 returns to the non-pressing position due to the elastic force of the coil spring 8.

Then, when the middle press rod 6 is further pressed, the cam engaging portion 16 of the interlocking cam plate 13, which has climbed over the cam crest 17a of the cam portion 17 of the press rod 6, is moved by the elastic force of the leaf spring 14 to the left in FIG. The middle press rod 6 is held in the pressing position (the middle press rod 6 is maintained in the held state shown at the right end in FIG. 1).

As mentioned above, according to the present invention, the interlocking cam plate is composed of a single metal plate and a cam engagement part made of a composite resin fixed to the metal plate, so (1) Since the cam retaining part that abuts (slides on) the cam part of the push rod is made of synthetic resin, the surface is smoother than in conventional cam engaging parts of this type that are integrated with a metal plate. Frictional resistance is low, so the switching feel is extremely good.

In addition, it is easier to manufacture and manage the metal cam retaining portion, which conventionally required surface correction by barrel polishing or the like.

(2) Since the main body of the interlocking cam plate is a metal plate, it is robust and does not change much over time, and the cam engagement part fixed to the metal plate acts as a reinforcing material, so it is highly resistant to forces applied in the longitudinal direction. It is strong and has very little risk of bending or warping.

Overall, the switching feeling is good, it is easy to manufacture,
Moreover, there is a practical effect that a highly reliable multiple interlocking switch can be obtained.

[Brief explanation of the drawing]

The drawings all show a multi-linked switch according to an embodiment of the present invention, with FIG. 1 being a partially omitted plan view of essential parts, and FIG. 2 being a partially omitted exploded perspective view. 1...Frame body, 2...Push button switch, 6
...Press rod, 13...Interlocking cam plate, 14
...Plate spring, 15...Metal plate, 16.
...Cam engaging part, 17...Cam part.

Claims (1)

[Scope of utility model registration request] In a switch mechanism including a plurality of push button switches and an interlocking cam plate that interlocks with the pressing operation of the push rod of each push button switch, the interlocking cam plate is a single metal plate and a plurality of interlocking cam plates fixed to the metal plate. It has a strong shape with a cam retaining part made of synthetic resin,
A multiple interlocking push button switch characterized in that a cam engaging portion of the interlocking cam plate and a cam portion of the push rod are brought into contact with each other.