JPH0539172Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a door lock device.

(Prior Art) First, conventional examples of door lock devices are shown in FIGS. 7 and 8.

In FIGS. 7 and 8, 1 is a door attached to the main body (not shown) so that it can be opened and closed, 2 is a handle case fixed to the door 1, and 3 and 4 are upper lock rods that are rotatably attached to the handle case. and the lower part is rock-solid. Upper lock rod 3
A cam 5 and a cam 6 are formed at the tips of the lower lock rod 4, respectively. On the other hand, locking members 7 and 8, in which cams 5 and 6 are removably fitted, are fixed to the main body (not shown). Then, by rotating the locking rods 3, 4 in the locking direction, the cams 5, 6 are fitted into the locking arms 7, 8, and the door 1 is locked to the main body. Also, Rock Road 3,
By rotating the door 4 in the unlocking direction, the cams 5 and 6 are removed from the locking arms 7 and 8, and the door 1 is unlocked from the main body.

Next, a U-shaped handle rod 9 and a cover 10 covering approximately half of the handle rod 9 are integrally fixed to the lock rods 3 and 4. On the other hand, the handle case 2 is provided with a latch 11 that detachably engages the cover 10 and the handle rod 9 at approximately the center thereof to lock the handle rod 9 to the handle case 2. This latch 11 is rotatably attached to the handle case 2 by a pin 12, and is biased by a spring 13 in the direction of engagement with the cover 10.

The conventional door lock device consists of the above structure.
To unlock the door 1, grasp the vertically extending bottom of the handle rod 9, rotate the latch 11 with your thumb to disengage it from the cover 10, and then rotate the handle rod 9 to unlock the lock rod 3, 4 to separate the cams 5 and 6 from the locking mailers 7 and 8.

(Problems to be Solved by the Invention) According to the conventional door lock device described above, in order to release the engagement between the latch 11 and the cover 10, the latch 11 is rotated by a predetermined angle and the cover 10 is rotated while maintaining this state. The handle rod 9 must be rotated until it is released from the latch, and it is difficult to quickly perform this series of operations with one hand.

Further, in the above-mentioned conventional device, a U-shaped handle rod 9 is used, and a latch 11 is engaged with a cover 10 covering the handle rod 9 in order to lock the handle rod 9 to the door 1. Therefore, a problem arises in that a large space is required to accommodate the handle rod 9 and cover 10 in the door 1, resulting in an increase in the size of the entire door lock device.

Furthermore, since the latch 11 is exposed to the outside, the appearance of the door lock device is impaired.

In view of the above, an object of the present invention is to provide a door lock device that can be installed on a door in a small space, has a good appearance, and can be quickly unlocked with one hand.

(Means for Solving the Problems) The present invention in accordance with the above object includes a lock rod rotatably attached to a door to lock and unlock the door, a handle lever fixed to the lock rod, and a handle lever fixed to the handle lever. a latch provided, a hook piece rotatably attached to the door and engaging the latch, a spring biasing the hook piece in a direction to engage the latch, and a hook piece attached to the handle lever and pressed when pressed. a push-button release device that rotates to release the engagement with the latch; and a cover case that is attached to the handle lever and covers the latch, hook piece, and release device, and exposes the push button of the release device. The gist is that.

(Function) According to the above structure, when the handle lever is held with one hand and the push button is pressed with the thumb, the engagement between the latch and the hook piece is released, and when the handle lever is subsequently rotated in the unlocking direction, the lock lock is rotated. The door will be unlocked.

(Example) An example of the present invention will be described below based on the drawings.

First, FIG. 6 shows an overall perspective view of a refrigerator equipped with a door lock device according to the present invention. 20 is the cold storage body, 21 and 22 are this cold storage body 2.
The door 21 is a pair of doors that are attached to the door 0 with a hinge 23 so as to be openable and closable, and one door 21 is equipped with a door lock device 30, which will be described later.

Next, FIGS. 1 to 4 show enlarged sectional views of the door lock device 30, and FIG. 5 shows a perspective view of the main parts. 1 is a cross-sectional view taken along the line -- in FIG. 6, and FIGS. 2 to 4 are cross-sectional views taken along the line -- in FIG.

In FIGS. 1 to 5, 3 and 4 are a pair of upper and lower lock rods rotatably attached to the door 21, and at the tip of each lock rod 3 and 4 there is a lock rod 7 fixed to the refrigerator body 20.
Cams 5 and 6 that fit into the cams 8 are formed. The lock rods 3, 4 are inserted into and fixed to a tube 31, and a handle lever 32 is fixed to the tube 31, which rotates together with the lock rods 3, 4. A latch 33 is fixed on the back side of the handle lever 32 in close proximity to the lock rods 3 and 4.

On the other hand, a fixture 34 is fixed to the door 21, and a support shaft 36 is fixed between a pair of support plates 35, 35 that are erected on the fixture 34. A hook piece 37 that engages with the latch 33 is rotatably attached to the support shaft 36, and a spring 38 that biases the hook piece 37 in the direction of engaging the latch 33 is attached. Further, an L-shaped lever 39 is integrally fixed to the hook piece 37.

Next, a push button type release device 41 and a cover case 42 are attached to the handle lever 32 via an auxiliary plate 40, and the cover case 42 allows the latch 33, hook piece 37, fixing metal fitting 34, and push button type release device to be attached to the handle lever 32. Device 41 is covered. The push button type release device 41 has a push button 43 exposed from the cover case 42 and a hook piece 3 that is extended and abuts one end of the L-shaped lever 39 when the push button 43 is pressed, and is integrated with the L-shaped lever 39.
The release device 41 is provided with a rod 44 that can move forward and backward to rotate the release device 7 in a direction to separate it from the latch 33, and the rod 44 is biased in the contraction direction by a spring housed inside the release device 41.

Note that the tube 31 has a handle lever 3.
2 is rotated in the unlocking direction (see arrow A in FIG. 1), it comes into contact with the bent portion 34a of the fixing fitting 34,
A stopper piece 31a that prevents interference between the cover 42 and the door 21 is fixed.

The present embodiment has the above configuration, and its operation will be explained next.

1 and 2 show a state in which the cams 5, 6 are fitted into the locking arms 7, 8 and the door 21 is locked to the main body 20, the hook piece 37 is engaged with the latch 33, and the handle lever 32 is connected to the door 21. It is attached to.

To unlock the door 21, grip the handle lever 32 and press the push button 43 with your thumb. Then, as shown in FIG. 3, the rod 44 extends and contacts the L-shaped lever 39, causing the L-shaped lever 39 to rotate counterclockwise about the support shaft 36. Accordingly, the hook piece 37 integrated with the L-shaped lever also rotates counterclockwise, and the hook piece 37 separates from the latch 33, thereby releasing the engagement between the handle lever 32 and the door 21. Then, when the handle lever 32 is subsequently rotated in the unlocking direction (see arrow A in FIG. 1), the locking rods 3 and 4 rotate and the cams 5 and 6 are disengaged from the locking arms 7 and 8, so that the door 21 is unlocked.

From the unlocked state of the door 21, move the handle lever 32 in the lock direction (opposite direction of arrow A)
If you rotate it, cams 5 and 6 will lock 7,
8 and the door 21 is locked. As the handle lever 32 rotates in the locking direction, the latch 33 comes into contact with the tip of the hook piece 37, as shown in FIG. When the handle lever 32 is further rotated, the hook piece 37 is rotated counterclockwise about the support shaft 36 against the biasing force of the spring 38, and the latch 33 is rotated.
The handle lever 32 is hooked to the door 21 by the hook piece 37.

(Effects of the invention) According to the invention, a push-button release device is provided on the handle lever so that the engagement between the door and the handle lever can be released by pressing the handle lever, so that the door can be easily and quickly unlocked with one hand. becomes possible.

Further, since the handle lever is configured to be engaged with the door by a hook piece attached to the door and a latch fixed to the handle lever, the shape of the handle lever is simple and the space required for installing the entire door lock device can be reduced.

Furthermore, since the hook piece and latch are covered with the cover case, the appearance of the door lock device is improved.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing an embodiment of the present invention;
Figures 4 through 4 are longitudinal cross-sectional views of the embodiment;
FIG. 6 is a perspective view of a main part of the present embodiment, FIG. 6 is an overall perspective view of a refrigerator to which this embodiment is applied, and FIGS. 7 and 8 are a plan view and a side view of a conventional device. 3, 4...locked, 21...door, 30
...Door lock device, 32...Handle lever,
33...Latch, 37...Hook piece, 38...Spring, 41...Push button type release device, 42...Cover case.

Claims (1)

[Scope of utility model registration request] A lock rod that is rotatably attached to the door and locks and unlocks the door, a handle lever that is fixed to the lock rod, a latch that is fixed to the handle lever, and a lock rod that is rotatably attached to the door and engages the latch. a spring that biases the hook piece in a direction to engage the latch; and a push-button release device that is attached to the handle lever and rotates the hook piece by pressing to release the hook from the latch. and a cover case that is attached to the handle lever and covers the latch, hook piece, and release device, and exposes a push button of the release device.