JPH0117781Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to an improvement of a switch.

Structure of conventional switch and its problems As shown in FIGS. 1 and 2, a conventional switch has an operating shaft 4 mounted on a switch housing 1 that incorporates a terminal plate 2, a contact plate 3, and a spring plate 9. The locking claw 7 of the support 6, which is formed in a substantially U-shape, is attached to the switch housing 1.
It was fixed by bending it on the back side. However, if the bending portion of the locking pawl 7 has a small amount of contact with the back surface of the switch casing 1 due to uneven bending or opening outward, etc., when operating the operating shaft, for example, the switch as shown in FIG. When a load W as shown in the figure is applied during operation, a component force F acts on the locking claw 7 in the direction shown in the figure, and the support 9 and the switch housing 1 are easily separated. Or, when excessive force is applied due to a fall of the product, the bent part may separate from the back of the switch housing 1,
There was a fear that it would fall apart. Also, even in the case of a single switch, the outward force F at both ends of the support 6
The strength against the support member 6 is determined only by the material and thickness of the support member 6, and is relatively small, so there is a risk of separation as described above. Further, the locking claw 7 of the support 6 is provided with an inclined portion 13 so that the tip of the locking claw 7 does not get caught on the switch housing 1 when bent. If this occurs, the vertical dimensions of the support fitting 6 and the switch housing 1 will change by the dimension of the forward diagonal portion, resulting in changes in contact pressure and poor conduction. I was afraid.

Purpose of the invention The present invention aims to solve these conventional problems and provide a switch that improves quality and prevents the combined parts from coming apart.

Structure of the invention The present invention includes a switch housing in which a terminal plate, a contact plate, and a spring plate are incorporated and a convex portion is formed on one side of the back surface, an operation device, and a support device, and one of the locking claws of the support device is a switch case. a convex portion formed on the back side of the switch housing;
When bent, they fit together to prevent the locking pawl from coming off due to outward force F.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 3 to 5, 1 is a switch housing 1 with a convex portion 15 formed on one side of the back surface.
A terminal plate 2 and a contact plate 3 are fixed to the upper surface recess. Reference numeral 4 denotes an operating shaft for bringing the contact plate 3 into and out of contact with the terminal plate 2, and a cam 5 is provided corresponding to each contact plate 3. 6 is a support for the operating shaft 4;
is rotatably supported. This support 6 is bent into a substantially U-shape by pressing, and an inverted U-shaped notch 8 is formed upward from the lower end on both of its walls. The operating shaft 4 is rotatably held. Further, on one side of the both side walls, there is a locking pawl 7 having a mounting hole 17, a hole 12 for tightening the meat to facilitate bending, and an inclined portion 13, and on the other side, there is a locking claw 7 having a hole 12 for tightening the meat to facilitate bending. and a convex portion 15 formed on the back surface of the switch housing 1, and a locking claw 7 provided with a substantially U-shaped notch 16 that fits when the locking claw 7 is bent.
is provided and is bent and locked on the back side of the switch housing 1. 9 is a spring plate, and the switch housing 1
and the operating shaft 4, and urges the operating shaft 4 upward.

According to the above configuration, the operating shaft 4 is placed on the switch housing 1, and the support 6 is placed from above the operating shaft 4.
If the locking pawl 7 is bent on the back side of the switch housing 1, the approximately U-shaped notch 16 provided on one side of the locking pawl 7 will fit into the convexity on the back side of the switch housing 1. It fits into the portion 15 and is securely locked even when an outward force F is applied. Further, the approximately U-shaped notch of the locking pawl 7 that contacts the back surface of the switch housing 1 does not need to have an inclined surface to prevent it from getting caught in the middle when bending, and may be horizontal. Therefore, when bending, even if the bending position varies, it is always locked in the horizontal part and heated upward by the spring plate 9, so variations in vertical dimensions are extremely small, and changes in contact pressure, There is no risk of poor continuity, etc. Note that this effect is further enhanced by providing the convex portions on both sides of the back surface.

Effects of the invention As is clear from the above explanation, the switch of the present invention has a protrusion formed on one side of the back of the switch housing, and the locking claw of the support is bent and fitted to lock the switch. By doing so, it is possible to stabilize quality and prevent withdrawal.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional switch, Fig. 2 is a rear perspective view of the same, Fig. 3 is a perspective view of a switch according to an embodiment of the present invention, Fig. 4 is a rear perspective view of the same, and Fig. 5 is a perspective view of the same. FIG. DESCRIPTION OF SYMBOLS 1... Switch housing, 6... Support tool, 7... Locking claw, 12... Convex part, 13... Notch.

Claims (1)

[Scope of utility model registration request] A switch housing including a contact plate and a terminal plate, an operating shaft for moving the contact plate toward and away from the terminal plate, a U-shaped support for rotatably holding the operating shaft, and the operating shaft and A spring plate is provided between the switch housings and biases the operating shaft in a direction away from the switch housing, and a locking piece and an inverted U-shaped notch are formed on both side walls of the support. Fit the operating shaft into the notch, engage both side walls of the support with both sides of the switch housing, and bend at least one of the locking claws into a convex portion formed on the back of the switch housing. A switch that locks.