JPH06101378A - Door locking mechanism - Google Patents

Abstract

PURPOSE:To facilitate operation of locking and unlocking a door and allow the lock to be in effect certainly by fixing one end of a spring to a lock bracket and the other end to a stationary bracket. CONSTITUTION:One end of a spring 5 with each end assuming Z-form is fixed to a lock bracket 3, which is secured by bolt-A to a lock 4, while the other end is fixed to a stationary bracket 6. Gate bar-A 1 and gate bar-B 2 are mounted through E-rings 14, 14 on pin-B 10 and pin-A 9 which are caulked to the lock bracket 3. Thereby the gate bar-A 1 and gate bar-B 2 are checked from moving after unlocking is made, the operating force at locking and unlocking is reduced, and inversion from the unlocking to locking is precluded when unlocking is done. Also this can give an appropriate clicking sense to the operator at the time of locking and unlocking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking mechanism, and more particularly to a door locking mechanism used for opening and closing a case.

[0002]

2. Description of the Related Art In a conventional door lock mechanism of this type, as shown in FIGS. 7 and 8, a bar A1 and a bar B2 are attached to a lock bracket 3 via pins 9 and 10, respectively. The lock bracket 4 is fixed via a bolt A8.

[0003]

In this conventional invention,
Since the lock always works in the locking direction due to the weight of the barbs, if the operator releases the key during unlocking, the lock always occurs.

In addition, since a force is always applied to the lock in the unlocking direction when unlocking, it is a heavy burden for the operator to rotate the key when unlocking.

Further, since a force in the locking direction is constantly applied to the lock, there is a problem that the operator has a constant operation feeling and the operator cannot feel the unlocking and locking feelings.

[0006]

The mechanism of the first invention of the present invention comprises:
In the door lock mechanism used for opening and closing the door, a spring is provided for stopping the rotation of the key so that the barb after unlocking does not operate.

The mechanism of the second aspect of the present invention is characterized in that, in the door lock mechanism used for opening and closing the door, a spring is provided in order to reduce the operating force at the time of locking and unlocking.

[0008]

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

FIG. 5 shows an example of a housing having a door 12 according to the present invention, and FIG. 6 shows the details of the door 12.

Further, FIGS. 1 to 4 show an embodiment of the present invention, a front view in a state of a portion B in FIG. 6, a side view in a locked state, FIG. 3 a front view in an unlocked state, Figure 4
[Fig. 4] is a front view in a state between locking and unlocking (lock is rotated by 45 °).

In this embodiment, the spring 5 has a lock bracket 3 whose one end is fixed to the lock 4 by a bolt A8.
The fixing bracket 6 is attached to the other end side. Since one end and the other end of the spring 5 have a Z-shape, they cannot be disengaged from the lock bracket 3 and the fixed bracket 6 unless an external force is applied.

The bar A1 is attached to a pin B10 crimped on the lock bracket 3 via an E ring 14, and
The bar B2 is attached to the lock bracket 3 by the crimped pin A9, E
Attach via ring 14. The bar B2 is guided in the front, rear, left, and right directions by the guide B13, and when the lock 4 rotates, the lock bracket 3 rotates and moves up and down through the pin A9. The bar A1 is guided in the front, rear, left, and right directions by the guide B13, and when the lock 4 rotates, the lock bracket 3 rotates and moves up and down via the pin B10. The lock 4 is fixed to the door 12 with a bolt B11. Spring 5
Is always acting in the direction of arrow 15.

Next, the overall operation of this embodiment will be described.

First, in the case of locking, by rotating the lock 4 in the clockwise direction from the state shown in FIG. 3, the lock bracket 3 rotates in the clockwise direction, the bar B2 goes up via the pin A9, and the pin B10. Bartle A1 goes down via. Rotation angle is 45
When the rotation angle exceeds 45 °, the force of the spring 5 works and the state shown in FIG. That is, when the lock 4 is rotated clockwise by 45 ° or more, it can be locked with an extremely light force.

In the case of unlocking, the lock 4 is removed from the state shown in FIG.
When the lock bracket 3 is rotated in the counterclockwise direction, the lock bracket 3 is rotated in the counterclockwise direction, the bar B2 is lowered via the pin A9, and the bar A1 is raised via the pin B10. When the rotation angle is 45 °, the result is as shown in FIG. 4, and when the rotation angle exceeds 45 °, the force of the spring 5 works and the state shown in FIG. That is, the lock 4 can be automatically unlocked by rotating the lock 4 counterclockwise by 45 ° or more.

[0016]

As described above, according to the first aspect of the present invention, the lock does not rotate due to the force of the spring when unlocked, and the lock is not locked even if the operator releases his / her hand from the key.

According to the second aspect of the present invention, the operating force is reduced by the force of the spring during unlocking and locking, and the lock can be rotated with an extremely light operating force.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention in a locked state.

FIG. 2 is a side view of the embodiment shown in FIG.

FIG. 3 is a front view of the embodiment of FIGS. 1 and 2 in an unlocked state.

FIG. 4 is a front view of the embodiment of FIGS. 1 and 2 in an intermediate state between locking and unlocking.

FIG. 5 is an external view of the housing side according to the present invention.

FIG. 6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a front view of a conventional example.

8 is a side view of the conventional example shown in FIG.

[Explanation of symbols]

 1 bar A 2 bar B 3 lock bracket 4 lock 5 spring 6 fixing bracket 7 guide A 8 bolt A 9 pin A 10 pin B 11 bolt B 12 door 13 guide B 14 E ring 15 direction of spring force

Claims (4)

[Claims] 1. A door lock mechanism used for opening and closing a door, characterized in that a spring for stopping rotation of a key is provided so that a bar after unlocking does not operate. 2. A door lock mechanism used for opening and closing a door, characterized in that a spring is provided to reduce an operating force at the time of locking and unlocking. 3. The door lock mechanism according to claim 2, wherein the spring is configured to prevent the spring from being reversed from unlocking to locking when unlocked. 4. The door lock mechanism according to claim 2, wherein the spring is configured so that an operator can feel a click feeling of locking and unlocking when locking and unlocking.