JPS6229846B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a door switch in a device having a door that opens and closes in different directions, such as a front cover that opens and closes from the front and back of a copying machine and an upper cover that opens and closes from the top and bottom. The object of the present invention is to provide a door switch which operates a safety switch only when both opposite-direction opening/closing doors are closed, with an extremely simple structure and at a low cost.

Conventionally, when the left and right doors open and close in the same direction, such as with a double door, there are various ideas and well-known methods for operating one door switch with an AND operation that is linked to the opening and closing of the left and right doors. In the case of doors that open and close in different directions, such as the front cover and the top cover, a door switch is provided for each door, and the safety switch is activated by the AND operation of the door switch, which has the disadvantage of increasing costs.

The present invention operates a door switch in conjunction with the opening and closing of one door, operates the door switch in conjunction with the opening and closing of the other door, and turns on the door switch only when both doors are closed. , it is possible to operate the safety switch with one door switch, thereby eliminating the drawbacks of the conventional method.

Next, one embodiment of the present invention shown in the accompanying drawings will be described in detail. A is a copying machine, 1 is a front cover that opens and closes from front to back, 2 is an upper cover that opens and closes from top to bottom,
B is a door switch for opening and closing in different directions according to the present invention, which is attached to the front wall 3 of the copying machine A. As shown in FIG. 2, this different direction opening/closing door switch B has a long groove 10a at one end of an elongated switch lever 10, which is fitted into a fixed shaft 11, and a front cover 1 is attached to the left end of the switch lever 10 so that it can move left and right. An upper cover 2 is disposed above and to the right of the switch lever 10 so as to move up and down, and a micro switch 12 is disposed below the middle of the switch lever 10. 1
Reference numeral 3 denotes a pressing member of the micro switch 12, which is fixed to the middle portion of the switch lever 10, and a spring 15 is stretched between the fixing pin 14 at the upper left of the switch lever 10 and the pressing member 13.

Next, the effect will be explained. When the front cover 1 is closed and the upper cover 2 is open, the switch lever 10 is pushed to the right as shown in FIG. , the pressing member 13 is pulled upward by the actuating piece 12a of the micro switch 12.
It is located above the middle of , and is not pressed. Next, when both the front cover 1 and the upper cover 2 are open, the switch lever 10 is pulled to the left by the spring 15 as shown in FIG. Since it is pulled upward at the center, the pressing member 13 is located above the base of the actuating piece 12a of the microswitch 12 and is not pressing.
When the upper cover 2 is closed in this state, the switch lever 10 rotates downward about the fixed shaft 11 as shown in FIG. 5, but the pressing member 13 only contacts the base of the operating piece 12a and does not press it. Next, as shown in Fig. 5, whether the front cover 1 is closed when the top cover 2 is closed or not,
When the top cover 2 is closed while the front cover 1 is closed as shown in FIG. 3, the switch lever 10 becomes as shown in FIG. death,
A safety switch (not shown) installed in copying machine A is turned on.

According to the present invention, only one door switch can be used to operate the safety switch only when doors that open and close in different directions, such as the front cover and top cover of a copying machine, are completely closed. It has an extremely simple structure, with a long groove provided at one end of the lever, which slides and rotates when both doors are opened and closed, so it can be manufactured at low cost.

Note that the present invention can be widely used not only in copying machines but also as a door switch for a safety switch for doors that open and close in different directions.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of a copying machine to which the present invention is applied;
2 to 5 are front views of an embodiment of the present invention during each operation. DESCRIPTION OF SYMBOLS 1...Front cover, 2...Top cover, 10...Switch lever, 10a...Long groove, 11...Fixed shaft, 12...Micro switch, 13...Press member, 15...Spring.

Claims (1)

[Claims] 1. A switch lever having a pressing member that can come into contact with the actuating piece of the micro switch, and a means for reversibly sliding and rotating the pressing member in different directions, in conjunction with the closing of one door. A door switch that opens and closes in different directions, in which the pressing member is slid and moved to the operating position of the micro-switch actuating piece, and the pressing member is rotated in the operating direction of the micro-switch actuating piece in conjunction with the closing of the other door. .