JPS6237300Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an interlock device for a switch that constitutes two circuits.

(Prior Art) Switches constituting two circuits are equipped with an interlock device so that only one of them can be closed, and the other is locked in an open state.
Figure 1 shows a conventional switch interlock device, in which 1 is a panel, 2 and 3 are switches mounted in parallel to panel 1, and 2a and 3a are handles for opening and closing switches 2 and 3, respectively. , 21 and 22 are triangular plate-like locks that rotate around pins 23 and 24 set parallel to the panel 1 between the handles 2a and 2b, respectively, and 25 is a pin that rotates between the respective lock plates 21 and 22. This is a link connecting at 26 and 27. The pin 23 is installed in a support cap 30 placed over a support shaft 29 fixed to the panel 1 with a screw 28 as shown in FIG.
The tip of the support shaft 29 is inserted into the groove 29a of the support shaft 29 so as not to slip out, and is rotatably supported. pin 24
is the same, so the explanation will be omitted.

In FIG. 1, the lock plate 21 is in contact with the side surface of the handle 2a of the switch 2 in the closed position. On the other hand, even if an attempt is made to close the switch 3 by bringing the lock plate 22 into contact with the upper surface of the handle 3a in the open position of the switch 3, the lock plate 22 cannot move the lock plate 21 via the link 25. Switch 3 cannot be closed. In this case switch 2
can be opened and closed. When the handle 2a is placed in the open position, the lock plates 21 and 22 are movable, allowing the handle 3a to be placed in the closed position.

However, such a structure has pins 23 and 2.
The structure of No. 4 was complicated, the parts required machining, and the rotating parts had to be assembled and adjusted to prevent them from falling off.

(Problems to be Solved by the Invention) An object of the present invention is to provide an interlock device for a switch which has no mechanically processed parts, is easy to assemble, and has no adjustment parts.

[Structure of the invention] (Means for solving the problem) One end of an L-shaped locking member is hinged to each end of a mounting plate located and fixed between two switches. The other end is hinged and connected with a connecting member so that it can swing in one direction and the opposite direction in parallel with the mounting plate, and the handle of either switch is locked inoperable by swinging the connecting member. It was designed to do so.

(Function) When the connecting member is swung in one direction, only the handle of one switch is locked in a predetermined state so that it cannot be operated, and when the connecting member is swung in the other direction, the handle of the other switch is locked. Only the handle can be locked in a predetermined state so that it cannot be operated with the other locking member.

(Example) An example of the present invention shown in the drawings will be described below. In FIGS. 3, 4, 5, and 6, parts that are the same as those in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted. 4 is fixed to the panel 1 between the handles 2a and 3a with screws 5, and the handles 2a and 3 are attached to both ends.
A mounting plate 6 has hinge parts 4a and 4b provided in the operating direction of a, and 6 has a hinge part 6a at one end rotatably connected to the hinge part 4a of the mounting plate 4 with a pin 7, and a hinge part 6b at the other end. An L-shaped lock member 8 connects the hinge part 8a at one end to the hinge part 4b of the mounting plate 4 with a pin 7.
An L-shaped lock member 9 is rotatably connected to the lock member 6 and has a hinge part 8b at the other end. This is a connecting plate which is connected to the hinge part 8b of the lock member 8 with a pin 10. The locking member 6 and the locking member 8 are opposed to each other, and when the locking member 6 is in contact with the side surface of the handle 2a, the locking member 8 is locked in the open position so that the handle 3a cannot be moved and cannot be closed. ing.

Next, the action will be explained. When the handle 2a is in the closed position, the lock member 6 comes into contact with the side surface of the handle 2a, and the lock member 8 comes into contact with the top surface of the handle 3a, so that the switch 3 cannot be closed. When the switch 2 is tripped and opened, the handle 2a can be moved to open and close the switch 2. Further, when the switch 2 is placed in the open position and the lock member 6 is rotated so as to come into contact with the upper surface of the handle 2a, the lock member 8 is rotated via the connecting plate 9 and detached from the upper surface of the handle 3a. It becomes possible to close the circuit. By closing one of the switches 2 and 3 in this manner, it is possible to mechanically lock the other so that it cannot be closed, thereby preventing both from being turned on at the same time.

In another embodiment, the surfaces 6 of the locking members 6, 8
If c and 8c are painted red, etc., the operating position of the interlock device can be clearly displayed.
Furthermore, if the magnets 11 and 12 are attached close to the hinge parts 9a and 9b of the connecting plate 9, the locking members 6 and 9 can be locked together.
The lock can be held more securely by adsorbing it. Also, the hinge parts 4a, 6a, 6b, 9a, 9
b, 8b, 8a, and 4b are very easy to manufacture by using commercially available hinges.

[Effect of idea]

As described above, according to the present invention, the L
One end of a letter-shaped lock member is hinged, and the other end of the lock member is connected with a connecting member so that it can swing in one direction and the opposite direction parallel to the mounting plate, and the connecting member can be swung. Since the handle of either switch is locked so that it cannot be operated, there are no machined parts and assembly is easy, and the effect is that it is possible to create a switch interlock device that eliminates adjustment parts. There is.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a conventional switch interlock device, Fig. 2 is an enlarged vertical sectional view taken along line A-A in Fig. 1, and Fig. 3 is a front view of a conventional switch interlock device. 4 is a right side view, FIG. 5 is a bottom view, and FIG. 6 is an exploded perspective view of the main parts of FIG. 3. 1... Panel, 2, 3... Switch, 2a, 3a
...Handle, 4...Mounting plate, 6, 8...Lock member, 9...Connecting plate, 11, 12...Permanent magnet.

Claims (1)

[Scope of utility model registration request] Two switches attached to a panel, a mounting plate located between these switches and attached to the panel, and an L-shaped lock hinged at one end to each end of the mounting plate. and a connecting member hinged to the other end of the lock member and supported so as to be able to swing in one direction and the opposite direction in parallel with the mounting plate, the connecting member being swingable in one direction. When the switch is moved, only the handle of one switch is locked in a predetermined state and cannot be operated by one locking member, and when the switch is swung in the other direction, only the handle of the other switch is in a predetermined state and cannot be operated. 1. An interlock device for a switch, characterized in that the switch is locked with the other locking member.