JPS6128197Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is equipped with doors on both sides of a box installed between a bright room and a dark room such as an X-ray room and a developing room, and the exchange of cassettes is carried out through the inside of this box. When the door on one side of the cassette exchange box is opened, the door on the other side is automatically locked so that it cannot be opened. There is already a method of locking the door on the other side so that the door cannot be opened when the user is in the room, but in the past, the mechanism was complicated, and as a result, the manufacturing process was complicated and the cost was high. However, the present invention improves this, eliminates the conventional inconveniences, and provides an extremely simple locking mechanism. The doors 2, 2, which can be opened and closed freely, are provided with a push button 4, a pushing rod 6 that moves forward and backward together with the push button 4, and a hook 7 on the inner surface of the door. A lock rod 10 is provided which locks a lock piece 8 formed at the outer end with the hook piece 7 by the urging of a swinging spring 12, and the lock piece 8 is provided with a lock piece 10 that locks the lock piece 8 formed at the outer end with the hook piece 7, and the lock piece 8 is provided with a lock piece 8 which is attached to the hook piece 7 at its tip by the advancement of the pushing rod 6. An inclined surface 9 is provided to release the lock piece 8 from the lock rod 10, and a support piece 13 is provided below the outer end of the lock rod 10, the lower end of which is pivotally supported, and which rises and falls in conjunction with the opening and closing of the door 2. The spring 15 is biased so as to support and hold the lower surface of the outer end of the lock rod 10 that has moved upward, and the lower part is pivotally supported between the inner ends of both lock rods 10, 10 so that the spring 1 can rise and fall freely.
9 is biased in the upright direction, and when one lock lever 10 moves downward, it is pushed by this and its upper end is positioned on the lower surface of the inner end of the other lock lever 10, and the other lock lever 10 moves downward. A blocking piece 17 is provided at the inner end of the blocking piece 17 to prevent the falling movement.

Embodiments of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a box body, and doors 2, 2 are provided on opposite sides thereof, respectively, so that the doors 2, 2 can be opened and closed freely, and both doors 2, 2 and the box body 1 are provided.
The following devices are installed symmetrically in each case.

The door 2 has a handle for opening and closing, a push button 4 whose axis is inserted through and springs outward by a spring 5, and a push rod 6 integrally connected to the push button 4 inside the door 2.
Furthermore, a hook piece 7 was provided protruding from the inner surface of the door 2.

A lock rod 10 having a lock piece 8 at its outer end is provided inside the box body 1 so as to be able to swing vertically about an intermediate shaft 11, and the lock piece 8 at its outer end is attached to the hook piece 7 by the bias of a spring 13. lock the door 2 by locking it on the inner surface of the
By disabling the release and moving forward the pushing rod 6 by pressing the push button 4, the tip pushes up the inclined surface 9 provided on the lock piece 8, resists the spring 12, and moves the lock rod 10.
the lock piece 8 against the hook piece 7 by moving the outer end of the lock piece 8 upward.
The door 2 can be opened by disengaging the lock and releasing the lock.

Below the outer end of the lock rod 10, there is provided a support piece 13 that can freely raise and lower, the lower part of which is pivotally supported by a shaft 14, and is biased by a spring 15 in the direction of raising it, and when it is raised, it is released as described above. The lower surface of the outer end of the lock rod 10, which moves upward during locking, is supported and held so that the lock rod 10 is held in its unlocked state, and the support piece 13 is also attached to the door 2.
Its up-and-down movement can be controlled by opening and closing. That is, in the illustrated example, the undulation of the support piece 13 is controlled by the hook piece 7 protruding from the inner surface of the door 2, and when the door 2 is opened, the support piece 13 is moved by the spring 15 due to the withdrawal of the hook piece 7. When the door 2 is raised up and the door 2 is closed, the support piece 13 is lowered by the hook piece 7 against the spring 15, and when the door 2 is raised up, the lock lever moves upward as shown by the phantom line in FIG. Although the lower surface of the inner end of the support piece 10 is supported and held, the control of the up-and-down movement of the support piece 13 is not limited to the hook piece 7, and a control protrusion piece may be separately provided on the inner surface of the door.

A blocking piece 17 is provided with a gap 16 formed within the inner ends of both locking rods 10, 10, whose lower part is pivotally supported in the gap 16 by a shaft 18 so as to be able to rise and fall freely, and which is biased in the rising direction by a spring 19.
was provided, and its one side 20 was opposed to the inner end of one of the lock rods 10. In the illustrated example, the blocking piece 17 is supported in contact with the inner end of one of the lock rods 10 by the bias of a spring 19, but it is not necessary that the two be in contact with each other, and for example, they may be provided separately. The blocking piece 17 is supported in the upright position by the stopper,
At this time, a gap is formed between one side 20 of the blocking piece 18 and the inner end of the lock rod 10, but this does not hinder operation. In addition, in the illustrated example, one side 20 of the blocking piece 17 facing the lock rod 10 is a curved surface to smooth the sliding action with the side surface 20 of the lock rod 10, as will be described later. It is preferable that the blocking piece 17 has a substantially rectangular shape with the other side surface 21, and that the inner end of one lock rod 10 is not supported during the unlocking operation, as shown in FIG. When moved downward as shown by the temporary line, the inner end contacts one side 20 of the blocking piece 17, and the blocking piece 17 is moved downward against the spring 19, and its upper part is connected to the inner end of the other locking rod 10. By positioning it on the lower surface, the inner end of the other lock 10 is prevented from moving downward, and when the inner end of the other lock 10 moves downward during the unlocking operation, the inner end becomes the third lock. The other side 2 of the blocking piece 17 at the solid line position shown in the figure
1, the blocking piece 17 is configured to be unable to move downward. 22 in the figure is the double locking rod 10
This shows a stopper that limits the amount of vertical movement.

Thus, as shown in FIG. 3, when the right lock lever 10 is swung from the state shown by the solid line by the unlocking operation by pressing the push button 4, and is in the state where the door can be opened as shown by the temporary line,
The downward movement of the inner end of the locking rod 10 causes the blocking piece 17 to move against the spring 1.
The door 2 on the left is tilted counterclockwise against the lock 9, and its upper part is positioned on the lower surface of the inner end of the left lock 10 to prevent the left lock 10 from swinging. When the locking lever 10 on the left side swings when the door 2 on the other side is opened, the tip of the inner end of the locking lever 10 becomes inoperable, as shown by the phantom lines in the figure. In order to prevent the blocking piece 17 from tilting in the downward movement direction by proximately opposing the other surface 21, the inner end of the right lock 10, which is located at the position indicated by the solid line in the figure, cannot be moved downward, and therefore the right side door The door 2 cannot be opened because the unlocking operation cannot be performed by pressing the push button 4.

According to the present invention, when both doors 2, 2 are closed, either door 2 can be opened by pushing the push button 4 to unlock the locking piece 8 caused by the lock piece 8 against the hook piece 7. However, when one door 2 is opened, the rocking of the lock 10 on that side causes its inner end to act on the blocking piece 17, which prevents the other lock 10 from swinging. It is possible to prevent the door from opening, and since the mechanism is almost symmetrical, it is extremely simple and easy to manufacture, process, and assemble, and its operation is simple and accurate.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a perspective view of the box with one door open, Figure 2 is a perspective view of the main parts, and Figure 3 is a diagram of the main parts explaining the operation. FIG. 1... Box body, 2... Door, 4... Push button, 6... Push rod, 7... Hook piece, 8... Lock piece, 9... Inclined surface,
10...Lock rod, 12...Spring, 13...Support piece,
15...Spring, 17...Blocking piece, 19...Spring, 2
0,21...Side surface of blocking piece.

Claims (1)

[Scope of utility model registration request] A push button 4 and a push rod 6 that moves forward and backward together with the push button 4 are attached to the doors 2, 2, which are provided on opposite sides of the box body 1 so as to be openable and closable.
Furthermore, a hook piece 7 is provided on the inner surface of the door, and a spring 1 is provided on both sides of the interior of the box body 1, which swings up and down symmetrically with a shaft 11 in the middle.
A lock rod 10 is provided which locks the lock piece 8 formed at the outer end with the hook piece 7 by the urging force of the lock piece 8, and the lock piece 8 is attached to the hook piece 7 at its tip by the advancement of the pushing rod 6. A supporting piece 13 is provided below the outer end of the lock rod 10 to pivot its lower end and rise in conjunction with the opening and closing of the door 2. A spring 15 is biased to support and hold the lower surface of the outer end of the lock rod 10, and a spring 19 is provided between the inner ends of both lock rods 10, 10 so that the lower part is pivotally supported and can be raised and lowered.
When one lock lever 10 moves downward, it is pushed by this and its upper end is positioned on the lower surface of the inner end of the other lock lever 10, and the other lock lever 10 moves downward. A door locking device for a cassette exchange box, which is provided with a blocking piece 17 that prevents downward movement at its inner end.