JPH0336166Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an interlock device for drawers and disconnectors.

[Conventional technology]

Conventionally, there has been a device of this type as shown in FIG. In the figure, 1. Cover of the bridge and disconnector,
2 is an interlock pin, and 3 is in contact with this interlock pin 2 and is connected to the interlock pin 2.
5 is a bolt that serves as a fulcrum for rotation of the lock plate 3; 6 is a drawer handle hook for fixing the lock plate 3 with a lock; 7 is a lock plate that corresponds to the interlock pin 2; This is a spring for holding the lock plate 3 in a slightly clockwise rotated state when not in contact with each other.

Next, the operation will be explained. A conventional interlock device is constructed as described above. The lock plate 3 can be rotated about the bolt 5 in the direction of arrow a. Normally, the left end 3a of the lock plate 3 is maintained slightly rotated in the direction of arrow a by the action of the spring 7.

Drop the lower end 2a of the interlock pin 2 into the groove, place the tip 3a of the lock plate 3 on the interlock pin 2, and use the lock 8 to lock the key between the hole 3b at the right end of the lock plate 3 and the drawer handle hook 6. put on. This fixes the interlock pin 2 in the locked position.

[Problem that the invention attempts to solve]

The conventional interlock device fixes the interlock pin 2 by placing a lock 8 on the lock plate 3 and the drawer handle hook 6, but since the rotation of the lock plate 3 is in a vertical plane, it is difficult to Even when the interlock pin is in place, it may become loose in the direction of arrow a, and depending on the size of the looseness, it may become impossible to fix the interlock pin 2, which may cause safety problems such as accidentally tripping or moving the disconnector. The point was hot.

This invention was devised to solve the above-mentioned problems, and aims to provide an interlock device with improved safety by reliably holding the interlock pin 2 in a predetermined position.

[Means for solving problems]

In the interlock device according to this invention, the rotating surface of the lock plate 3 is a horizontal surface, and a communication hole is provided in this horizontal surface.

[Effect]

The interlock device in this invention has a first
As shown in the figure, by making the rotating surface of the lock plate 3 a horizontal plane, there is no loosening in the direction of the arrow a, and the interlock pin 2 can be reliably held in a predetermined position. Also, use the communication hole to attach the lock.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings. In Figure 1, 1. Cover of the bridge and disconnection, 2.
3 is an interlock pin, and 3 is a lock plate having a horizontal surface portion 3c at the bottom. 3a is the left end of the lock plate 3 that directly presses the interlock pin 2, that is, the engagement end; 3b is the hole provided in the horizontal surface 3c for attaching the lock 8; 4 is the front side of the cutter. A fixed panel is provided to protrude from the top and rotatably supports the lock plate 3 at an upper horizontal surface portion 4a, and 4b is a lock 8 provided on the horizontal surface portion 4a.
This is a hole for attaching. In addition, holes 3b and 4b
are in communication when the lock plate 3 is in the lock position. Reference numeral 5 designates a bolt or rotating shaft that passes through both the horizontal surfaces 3c and 4a of the lock plate 3 and the fixed panel 4 and serves as a fulcrum of rotation, 6 a drawer handle hook, and 7 a spring.

Next, the operation will be explained. As shown in FIG. 1, the lock plate 3 rotates in the direction of arrow b using the bolt 5 as a fulcrum. Normally, the left end 3a of the lock plate is maintained slightly rotated in the direction of arrow b by the action of the spring 7.

When fixing the breaker, first drop the lower end 2a of the interlock pin 2 into the groove, then move the left end 3a of the lock plate 3 in the direction opposite to arrow b using the bolt 5 as a fulcrum to lock the interlock. Place it on pin 2. Then, the lock plate 3 and the fixing panel 4 are fitted with a lock 8 using the hole 3b on the lock plate 3. The lock plate 3 has three holes for attaching a lock, but this is to ensure that the interlock pin 2 is held in place.
Even if one or two pieces come off, the left end 3 of the lock plate 3
a will not come off from above interlock pin 2.

In the above embodiment, the lock plate 3 has a circular hole, but the hole may have an oval shape. If the shape is oval, the number of holes can be increased, and the interlock pin 2 can be held in a predetermined position even more reliably.

[Effect of idea]

As described above, according to this invention, the lock plate 3
Since the rotating surface of the breaker is horizontal and the interlock pin 2 is securely held in the specified position, there is no possibility of accidentally moving the breaker, which significantly improves safety. Since the horizontal surface portion protruding forward is used to lock the lock, an interlock device having a simple structure can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an interlock device according to an embodiment of this invention. FIG. 2 is a block diagram showing a conventional interlock device. In the figure, 2 is an interlock pin, 3 is a locking plate, 3a is an engaging end, 3b is a hole, 3c is a horizontal surface, 4 is a fixed panel, 4a is a horizontal surface, 4b is a hole, 5 is a rotation axis, 8 is a lock. In addition, in the figure,
The same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] An interlock pin that is attached to the shield cutter and takes two positions, locking and releasing, by vertical movement; a fixed panel that projects toward the front of the shield cutter and forms a horizontal surface on the top surface; and an interlock pin that is opposed to the horizontal surface of the fixed panel. and a lock plate having a horizontal surface portion placed on the horizontal surface portion and having an engaging end portion that engages with the interlock pin in the lock position of the interlock pin to prevent movement in the unlocking direction. and a rotation shaft connecting the lock plate and the fixed panel so that the horizontal surface portion of the lock plate can freely rotate on the horizontal surface portion of the fixed panel, and a mutual correspondence between each horizontal surface portion of the fixed panel and the lock plate. 1. An interlock device for a drawer type or disconnector, characterized in that it has at least a communication hole provided at a position where the interlock device is connected to the disconnector.