JPH0539171Y2 - - Google Patents

Description

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

(Prior Art) A conventional example of a door lock device is shown in FIGS. 6 and 7.

In FIGS. 6 and 7, 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). By rotating the locking rods 3 and 4 in the locking direction, the cams 5 and 6 are fitted into the locking arms 7 and 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 handle 9 is attached to the lock rods 3 and 4.
and the cover are fixed together. On the other hand, the handle case 2 is provided with a latch 11 that detachably engages with the cover 10 and locks the handle 9 to the handle case 2. This latch 11 is rotatably attached to the handle case 2 by a pin 12, and a spring 11 is attached in the direction of engagement with the cover 10.
3.

The conventional door lock device consists of the above structure.
To unlock the door 1, press the latch 11 to release the engagement with the cover 10, then rotate the handle 9 to rotate the locking rods 3, 4, and lock the cams 5, 6 to the locking arms 7, 6. Remove from 8.

(Problems to be Solved by the Invention) According to the conventional door lock device described above, in order to unlock the door, the latch 11 is pressed to release the engagement between the latch 11 and the cover 10, and then the handle 9 is rotated. You have to operate it, and it cannot be unlocked in one operation. Furthermore, in order to disengage the latch 11 and the cover 10, the handle 9 must be rotated while pressing the latch 11 until the cover 10 is released from the latch, and this series of operations can be quickly performed with one hand. was difficult.

In view of this, an object of the present invention is to provide a door locking device that allows a door to be unlocked by simply rotating a handle 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 plate fixed to the lock rod, and a handle plate that is rotatably attached to the handle plate. A handle rotatably pivoted, a hook piece fixed to the handle, and a lever rotatably pivoted to the door;
a latch pin that is attached to one end of the lever and removably engages with the hook piece; first and second stoppers that are erected on the handle plate and whose ends come into contact when the handle is rotated; and the handle. a first spring that urges the handle in a direction such that one end thereof abuts the second stopper; a third stopper that is fixedly attached to the door and that the lever abuts;
a second spring that biases the lever in a direction in which the lever abuts a third stopper; when one end of the handle abuts the second stopper and the lever abuts the third stopper, the hook The gist is that the latch pin is configured to be able to engage with the latch pin.

(Function) According to the above configuration, when the door is in the locked state, one end of the handle is moved to the second spring by the first spring.
As the lever contacts the stopper, the second spring causes the lever to contact the third stopper, and the hook piece and latch pin engage to lock the handle to the door.

When the handle is rotated in the unlocking direction, the engagement between the hook piece and the latch pin is released, and one end of the handle comes into contact with the first stopper.
When one end of the handle comes into contact with the first stopper, the handle is prevented from rotating about the pivot provided in the handle plate. Therefore, as the handle is rotated thereafter, the handle and the handle plate are rotated together, the lock lock is rotated in the unlocking direction, and the door is unlocked.

When the handle is rotated in the lock direction when the door is in the unlocked state, one end of the handle will move to the second
It comes into contact with the stopper and rotation is prevented. Therefore, from then on, the handle and the handle plate are rotated together, and the locking rod is rotated in the locking direction.
On the other hand, since the lever is brought into contact with the third stopper by the second spring, as the handle is rotated in the locking direction, the hook piece engages with the latch pin and the handle is locked to the door.

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

First, FIG. 5 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 3 are enlarged sectional views of the door lock device 30 (FIG. 5 - line cut sectional view).
FIG. 4 shows a perspective view of the main parts.

1 to 4, reference numerals 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 plate 34 is fixed to the tube 31, which rotates together with the lock rods 3, 4. The tube 31 also has a structure that when the handle plate 34 is rotated in the unlocking direction (see arrow A in FIG. 2), the handle plate 34 and the door 2 come into contact with a bent portion 41b of a handle fixing fitting 41, which will be described later.
A stopper piece 31a is fixed to the stopper piece 31a to prevent interference between the parts 1 and 1. The handle plate 34 consists of a bottom plate 34a and a pair of side plates 34b, 34b standing upright from the bottom plate 34a.
has been planted. A handle 35 is rotatably attached to this pivot 36. Furthermore, a pin 37 is installed between the side plates 34b, 34b in the rotation range of one end of the handle. This pin 37 and the bottom plate 34a are attached to the handle 35.
When rotated, one end thereof comes into contact and acts as a first stopper and a second stopper to restrict rotation. The handle 35 is attached to the pivot shaft 36 in a direction in which one end of the handle 35 comes into contact with the bottom plate 34a.
A first spring 39 is attached that biases the. A hook piece 40 is also fixed to the handle 35.

On the other hand, a handle fixing fitting 41 is attached to the door 21.
is fixed. The handle fixing fitting 41 includes a bottom plate 41a fixed to the door 21 and a pair of side plates 4 erected on the bottom plate 41a.
1b, 41b, side plates 41b, 41
A pin 42 is installed between b. A pair of levers 43, 43 are rotatably attached to the pin 42. A latch pin 44 with which the hook piece 40 is removably engaged is attached between the levers 43, 43, and a collar 45 is rotatably inserted into the latch pin 44. Further, a third stopper 46 for regulating the rotation of the levers 43, 43 is provided upright on the bottom plate 41a.
43 is biased by a second spring 47 attached to the pin 42 in the direction of contacting the third stopper 46.

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

In Figure 1, the cams 5 and 6 are locked.
The figure shows a state in which the door 21 is fitted into the main body 20 and locked to the main body 20. At this time, one end of the handle 35 is brought into contact with a bottom plate 34a, which is a second stopper, by a first spring 39, and the lever 43 is brought into contact with a third stopper 46 by a second spring 47. Then, the hook piece 40 engages with the collar 45 inserted into the latch pin 44, and the handle 35
It is attached to 1.

From the state shown in Fig. 1, turn the handle 35 in the unlock direction as shown in Fig. 2 (see arrow A in Fig. 2).
When the hook piece 40 and the collar 45 are rotated, the engagement between the hook piece 40 and the collar 45 is released, and one end of the handle 35 is
It comes into contact with the stopper pin 37. handle 35
When one end of the handle 35 comes into contact with the pin 37, the handle 35 is prevented from rotating about the pivot 36. Therefore, as the handle 35 rotates thereafter, the handle 35 and the handle plate 34 rotate integrally. As a result, the locking rods 3 and 4 are also rotated in the unlocking direction, and the cams 5 and 6 are disengaged from the locking arms 7 and 8, so that the door 21 is unlocked.

Next, when the handle 35 is rotated in the locking direction (see arrow B in Figure 3) from the state shown in FIG. is prevented. Therefore, from then on, the handle 35 and the handle plate 34 are rotated together, the locking rods 3 and 4 are rotated in the locking direction, the cams 5 and 6 are fitted into the locking arms 7 and 8, and the door 21 is locked. On the other hand, the lever 43 is connected to the second spring 47
As the handle 35 is rotated in the locking direction, the hook piece 4 is in contact with the third stopper 46.
0 comes into contact with the collar 45 and the second spring 4
The lever 43 is rotated in the direction of arrow C against the urging force of 7. When the lever 43 is rotated by a predetermined angle, the hook piece 40 engages with the collar 45, so that the handle 35 is locked to the door 21.

As described above, according to this embodiment, simply by rotating the handle 35 in the unlocking direction, the engagement between the handle and the door 21 is released and the door 21 can be unlocked from the main body.

Further, since the rotatable collar 45 is inserted into the latch pin 44 and the frictional force that acts when releasing the engagement with the hook piece 40 is reduced, the force required for the unlocking operation can be reduced.

Furthermore, when the tip of the hook piece 40 comes into contact with the collar 45 during lock operation, the lever 43 rotates against the biasing force of the second spring 47, so the impact force at the time of contact is alleviated and the lock operation becomes easier. Become.

(Effects of the invention) According to the invention, the handle is rotatably attached to the handle plate fixed to the lock rod, and the hook piece is fixed to the handle, so that the handle and the door can be engaged by simply rotating the handle. The door can be unlocked from the main unit.

Furthermore, since the latch pin with which the hook piece engages when the lock is locked is attached to the rotatable lever, the impact force during the lock operation is reduced, making it possible to perform the lock operation easily.

[Brief explanation of the drawing]

1 to 3 are enlarged sectional views showing an embodiment of the present invention, FIG. 4 is a perspective view of the main part of the embodiment, and FIG.
The figure is an overall perspective view of a cold storage to which this embodiment is applied, and FIGS. 6 and 7 are a plan view and a side view showing a conventional device. 3, 4...locked, 21...door, 30
...Door lock device, 34...Handle plate, 34a...(second stopper) bottom plate, 35...Handle, 36...Pivot, 37...
(first stopper) pin, 39... first spring, 40... hook piece, 44... latch pin,
45...color, 46...3rd stopper, 47...
...Second spring.

Claims (1)

[Scope of utility model registration request] A lock rod rotatably attached to a door to lock and unlock the door, a handle plate fixed to the lock rod, a handle rotatably pivoted to the handle plate, and a hook piece fixed to the handle. a lever rotatably pivoted to the door; a latch pin attached to one end of the lever and removably engaged with the hook piece; first and second stoppers, one end of which abuts, and a first stopper that urges the handle in a direction such that one end of the handle abuts the second stopper.
a spring, a third stopper that is fixed to the door and that the lever comes into contact with, and a second spring that biases the lever in a direction that the lever comes into contact with the third stopper, and one end of the handle is connected to the second stopper. A door lock device characterized in that the hook piece and the latch pin can be engaged when the lever is in contact with the third stopper.