JPS5835825Y2 - door opening/closing device - Google Patents

Description

[Detailed explanation of the idea] The present invention particularly relates to a door opening/closing device equipped with a locking mechanism.

Conventional door opening/closing devices for instruments use, for example, a roller-like method to pull the door in or hook it with a claw, and are usually not equipped with a locking mechanism, which prevents the door from opening while instruments are being transported. There was a fear that I would suffer.

In order to eliminate the drawbacks of the conventional device, the present invention is characterized by providing a two-stage door locking mechanism, and will be described below with reference to embodiments shown in the drawings.

In the embodiment shown in FIG. 1, 2 is a door of a main body 4 of instruments, etc., and a claw 12 is attached to it.

Reference numeral 1 denotes a door opening/closing lever, which is rotatable on a shaft 11 and is biased by a spring 3. Its left end protrudes outside the window 13 of the door 2 as shown in the figure. There is.

Reference numeral 6 denotes a lock plate, the right elongated part of which protrudes outside the right opening 14 of the support frame 5 attached to the main body 4, and a spring is installed between the inner surface of the support frame 5 and the end face of the wide part of the lock plate 6. 7 is interposed.

Further, as shown in FIG. 2, a rotatable roller 8 is provided between the pawl 12 and the lock plate 6 in place of the shaft 9, and normally fits into the window 15 of the pawl 12, and the shaft 9 Lock plate 6 window 1
It is opposed to the narrow part 17 of 6.

However, 10 is a roller support having a support portion for the shaft 9.

Since the roller support 10 is biased upward in the figure by a spring 19 wound around a screw 18 that is engaged with the support body 5, the roller 8
A biasing force toward the pawl 12 acts on the pawl 12, and the pawl 12 is locked.

Furthermore, when the claw 12 tries to move to the left, the roller 8 has no choice but to move downward, but at this time, the movement of the shaft 9 is blocked by the lock plate 6, so the lock is secure and the body and door are securely locked. There is no backlash or gap on the contact surface with 2 (Fig. 3 C).

In the above structure, lever 1 is used to close door 2.
Press the lower part A in the direction a.

This causes the upper part of the lever 1 to rotate in the b direction.

At this time, the lever 1 is brought into the state shown in FIG. 3A by the toggle action of the spring 3.

As a result, the locking plate 6 is in contact with the lever 1 through the left opening 20 of the support 5 and is moved to the left, so that the axis 9 of the roller 8 corresponds to the elongated part 21 of the window 16 of the locking plate 6. , the above-mentioned prevention of movement of the roller 8 by the lock plate is released.

(See Fig. 4) Next, when lever 1 is pulled further in direction b, the tip of lever 1 comes into contact with part C of main body 4, so the claw 12 comes off from roller 8 due to the torque force caused by the lever action. Door 2 opens completely.

On the other hand, when closing the door 2, press the claw 12 of the door 2 onto the main body 4.
The rollers 8 are fitted into the windows 15 of the claws 12, resulting in the state shown in FIG. 3A.

After that, push the lever 1 further to move the lock plate 6 to the right and lock the roller 8.

In this way, the state shown in FIG. 1 is restored.

As is clear from the above explanation, according to the present invention, 2
Since a stepped locking mechanism is provided, there is no chance of the door opening easily even if vibrations are applied while the main body is being transported.

[Brief explanation of drawings]

1 and 2 are a schematic front view and a top view of one embodiment of the present invention, FIG. 3 is an explanatory diagram of its operation, and FIG. 4 is a diagram showing the relationship between the roller and the lock plate in the above embodiment. be. 1... Lever, 2... Door, 4... Body, 6...
Lock plate, 12...claw, 13...claw window.

Claims (1)

[Scope of utility model registration request] The door of the predetermined device is provided with a rotatable lever for opening and closing the door and a locking claw having a window, and the main body side of the device is provided with a lever that rotates in contact with the claw when the door is opened and closed, and closes the door. A roller that fits into the window of the claw, a support that supports the shaft of the roller, and a lock plate that slides by rotation of the lever are provided, and the lock plate is provided with a roller that fits in the window of the claw, and a lock plate that slides when the lever is rotated. A door characterized by being provided with a window for pressing a shaft, locking the pawl with the roller, and allowing movement of the shaft of the roller at a second sliding position to release the lock of the pawl. Switchgear.