JPS6324591Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lever type slide switch in which the angle between the protruding direction of the lever and the terminal direction is about 90 degrees.

Lever-type slide switches are widely used in audio equipment because of their ease of operation and design. With the development of audio equipment in many fields, there is a demand for lever-type slide switches that are smaller and lower in cost.

The present invention aims to improve a lever-type slide switch that meets the above requirements and is compact, has a small number of parts, and is easy to assemble.

A conventional standard lever switch will be explained as a first conventional example with reference to FIG.

The switch housing 21 made of a metal plate has a lever 2.
2 is rotatably supported by a shaft pin 21c, and the lever 22 is provided with a driving protrusion 22b for driving the mold sliding body 24. An insulating substrate 27 is fixed to the lower surface of the switch housing 21, a plurality of fixed terminals 26 are implanted in the insulating substrate 27, and a movable contact piece that makes selective contact with the fixed terminals 26 is attached to the lower surface of the sliding body 24. Inside the switch housing 21 is a hole 23a that accommodates a ball 28 as a moderation member and a coil spring 29.
The moderation part housing 23 equipped with the switch housing is held using a side hole of the switch housing, and the cam part 22e formed integrally with the lever 22 comes into contact with the ball 28, and the lever 2
By rotating the switch 2, the switch was changed in moderation. This first conventional example has disadvantages in that the height of the switch is increased and the moderation part housing 23 is required, which requires some effort to install.

Next, a second conventional example in which the mounting structure of the moderator housing is somewhat simplified will be explained with reference to FIG. Here, the symbols for parts that are almost the same as those in the first conventional example are shown in the first example.
It is attached according to the conventional example.

Reference numeral 31 denotes a switch casing made of a metal plate, and the casing 33 is held by engaging the side tongues of the notched grooves on the upper surface of the switch casing with the lateral grooves provided in the moderating part casing 33. Here, the lever 32 is made of synthetic resin, and is provided with a drive protrusion 32b, a moderation cam portion 32e, etc. in accordance with the first conventional example. Further, the sliding body 34 is provided with a hole 34b that engages with the driving protrusion 32b of the lever. In this second conventional example, although it is easy to attach the moderator housing, it still requires some effort, and although the height is lower, the parts used are more complicated.

The present invention was developed by making the switch housing die-cast or molded in order to overcome the disadvantages of conventional products, such as the large number of parts and the complicated shape of the parts due to their mutual fitting, which requires a large number of processing steps. The above-mentioned drawbacks are solved by forming the main body into one body.

An embodiment of the present invention will be described below with reference to FIGS. 3, 4, and 5. Reference numeral 10 denotes a rectangular switch housing made of die-cast or synthetic resin molding, and as shown in FIG. It is provided with a side wall 11, a rear wall 12, and a bottom wall 14 at the lower part of the front right end portion. Further, a positioning projection 14c is provided at the front end of the bottom wall. The bottom surface 11a of the central portion of the side wall 11 is provided with a board mounting pin 11b located above the bottom wall 14 and fixing the insulating board 7 thereto. Here, the left end of the bottom wall 14 is provided with a rear wall 14b that is approximately at the height of the bottom surface 11a of the side wall to prevent flux and the like from entering the housing during soldering after assembly. Attachment pins 13 are provided on the lower surface of the switch housing to engage with attachment holes in the printed circuit board of the set. The upper part of the switch housing 10 has an upper surface protrusion 1 equipped with a moderation hole 17a for housing a moderation member such as a steel ball 8 and a coil spring 9.
7 and a guide groove 17b that engages with the lever 2, and a lever support shaft hole 17c and a stopper shaft hole 17d are provided in a direction perpendicular to the guide groove 17b.

Reference numeral 2 denotes a lever made of a metal plate or the like, and as shown in Fig. 4, it has an operating part 2a on the left end, a shaft hole 2c on the right side through which a support shaft 3c passes, a driving protrusion 2b on the lower part thereof, and a fan-shaped stopper hole on the right side. 2d and a moderation cam portion 2e are provided at the right end in one body. Reference numeral 4 denotes a sliding body made of synthetic resin, and is provided with a driving portion 4a having a hole 4b that engages with the driving protrusion 2b of the lever. 3
3d is a support shaft that supports the shaft hole 2c and rotatably attaches the lever 2 to the switch housing 10;
is a stopper shaft rod that engages with the stopper hole 2d of the lever to limit the rotation range of the lever. Reference numeral 5 designates a movable contact piece that is attached to the lower surface of the sliding body 4 and engages in contact with and separates from the fixed terminal 6. 6 is a fixed terminal,
7 is an insulating substrate on which the fixed terminal 6 is implanted.

Next, the assembly of the lever switch of the present invention will be explained. First, the coil spring 9 and ball 8 as a moderation member are inserted into the moderation hole 17a of the switch housing 10, and then the moderation cam portion 2e of the lever 2 is placed in the guide groove 17b so as to come into contact with the ball 8.
The lever 2 is attached to the switch housing 10 by inserting the support shaft 3c into the support shaft hole 17c of the switch housing and the shaft hole 2c of the lever 2. Next, the sliding body 4 with the movable contact piece 5 attached to the lower surface is inserted into the switch housing 10,
The driving protrusion 2b of the lever 2 is inserted into the hole 4b of the sliding body 4.
engage. Next, an insulating board 7 on which a plurality of fixed terminals 6 are implanted in parallel is attached to the lower surface of the switch housing in close contact with the side wall bottom surface 11a, and the base mounting pins 1
Press 1b to spread it and fix it. Next, the stopper shaft 3d is inserted and fixed into the stopper hole 17d of the switch housing 10 through the stopper hole 2d of the lever 2, thereby completing the assembly.

Next, the operation of the lever switch of the present invention will be explained.
When the operating part 2a of the lever 2 is rotated in the vertical direction, the peak of the moderation cam part 2e pushes the ball 10 urged in the cam direction by the coil spring 9, and the cam part 2e
When the peak exceeds the ball, moderation occurs, and at the same time, the driving protrusion 2b rotates to move the sliding body 4.
Then, the movable contact piece 5 attached to the sliding body 4 moves to contact and separate from the fixed contact 6, thereby switching the circuit.

As mentioned above, in the lever switch of the present invention, since the moderation part housing is formed as one body with the switch housing, the number of parts is reduced and the number of assembly steps is greatly improved.
Since the moderation part housing can be made smaller and narrower than the width of the switch housing, not only the material of the switch housing can be saved, but also the shafts 3c and 3d can be shortened. Bottom wall 1 with a rear wall 14b provided in one body at the lower front of the switch housing
4, the switch housing is durable,
After installation on the chassis, there is no intrusion of dust or flux from soldering. Furthermore, a switch front wall 16 having approximately the width of the switch, including the bottom wall 14, can be provided at the height of the upper surface protrusion 17 as a moderation section on the upper front surface of the switch casing, and the switch casing width is provided on the upper part thereof. It was possible to provide a pair of mounting screw holes 16a for the switches by utilizing the narrower side space of the upper surface protrusion 17. Furthermore, since the length of the guide groove 17b that engages with the lever 2 is long, and because it is integrated with the switch housing, there is no assembly play, etc., and there are many effects such as less play of the lever.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of a first conventional example, Fig. 2 is a schematic side cross-sectional view of another conventional example, Figs. FIG. 3B is an assembled perspective view of the main parts including a partial cross section, FIG. 3B is an assembled cross-sectional view of the main parts including a partial cross section, FIG. 4 is an exploded perspective view of parts, and FIG. 5 is a detailed view of the switch housing. 2: Lever, 2a: Operation part, 2b: Drive protrusion,
2c: Shaft hole, 2d: Stopper hole, 2e: Moderation cam part, 3c: Support shaft, 3d: Stopper shaft rod, 4:
Slider, 4a: Slider drive unit, 4b: Slider drive hole, 5: Movable contact piece, 6: Fixed terminal, 7: Insulating board, 8: Ball, 9: Coil spring, 10: Switch housing, 11: Switch Case side wall, 11a: Switch case bottom surface, 11b: Switch case insulation board mounting pin, 11c: Switch case protrusion, 1
2: Switch housing rear wall, 13: Switch housing mounting pin, 14: Bottom wall, 14b: Rear wall, 14c: Positioning protrusion, 16: Front wall, 16a: Mounting screw hole, 17: Top protrusion, 17a: Moderation hole, 17b:
Guide groove, 17c: Support shaft hole, 17d: Stopper shaft hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A lever rotatably supported by the switch housing is attached to a drive hole of a sliding body equipped with a movable contact piece that connects and disconnects a fixed contact planted on an insulating substrate. In a lever switch that is provided with a driving protrusion that engages and a moderating cam portion that abuts a biasing moderating member fixed to the switch housing, the biasing moderating member is housed, and the top protrusion having a lever guide groove is attached to the switch housing. A lever switch characterized in that it is provided integrally with a switch casing at the front of the upper surface, a bottom wall is provided below the front of the switch casing, and a front wall closes a peripheral side surface of the front of the casing. (2) The lever switch according to claim 1, which is a utility model registration, characterized in that a rear wall 14b is provided at the rear of the bottom wall, and the lower surface of the switch housing is closed by the insulating substrate and the bottom wall. (3) The lever switch according to claim 1, which is made of metal die-casting and has a switch housing mounting pin integrally provided on the lower surface of the switch housing.