JPH0240697Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a latch lock for locking the door of a freezer, refrigerator, etc., which can be unlocked from inside the refrigerator.

BACKGROUND OF THE INVENTION As shown in FIG. 5, a latch 2 for securely closing the door 1 is attached to the door of a particularly large-sized refrigerator such as a freezer or a refrigerator. This latch lock 2 includes a latch lock body 3 that is attached to the door side,
It consists of a latch receiver 4 attached to the side wall.
The latch lock main body 3 has a latch 6 which is moved in and out by a lever 5, and the latch 6 is engaged with the latch receiver 4 to lock the lock. When door 1 is closed, it is automatically locked. When unlocking, pull the lever 5 toward the outside of the refrigerator, retract the latch 6, and remove it from the latch receiver 4. Therefore, the door 1 can normally be opened and closed by this lever 5.

In the unlikely event that someone is inside the warehouse, the door may be closed. In this case, it is dangerous if the refrigerator cannot be opened from inside the refrigerator, so an unlocking device inside the refrigerator is usually provided so that the refrigerator can be unlocked even if the refrigerator is locked with someone inside. The conventional refrigerator interior unlocking device has a configuration in which a push rod 7 that penetrates the door 1 and can be pushed in from the inside of the refrigerator is attached, and by pushing the push rod 7 from the inside of the refrigerator, the lever 5 can be moved and the latch 6 can be retracted. It is becoming. Normally, this push rod 7 can be used to unlock the refrigerator from inside, so it is safe, but in recent years, in order to further improve safety, it has become necessary to provide another unlocking device in addition to the push rod, that is, a double safety mechanism. is requested.

Therefore, conventionally, as a second refrigerator unlocking device, as shown in Japanese Utility Model Publication No. 55-53016,
A device has been developed that attaches the latch to the side wall so that it can be loosened and removed from the inside of the refrigerator. Even if the push rod becomes frozen and does not move, it can be unlocked by removing the latch holder, further increasing safety.

By the way, in order to be able to remove the latch receiver from the inside of the refrigerator, since the latch receiver is attached to the side wall, a hole must be drilled through the side wall. Freezers and refrigerators have a large temperature difference between the inside and outside of the refrigerator, so the side walls and doors are filled with insulating material to insulate them. push rod 7
It is not preferable to provide one more through hole, since the insulation effect is also impaired by the through hole.

Purpose of the invention The present invention was made with these points in mind, and it does not impede the heat insulation effect more than necessary, and provides a double safety mechanism. The object of the present invention is to provide an internal unlocking device capable of unlocking a latch lock from the inside.

Summary of the invention This invention has a mounting seat fixedly attached to the outside of the door to which the latch lock body can be attached rotatably, the rotation of the latch lock body being stopped by a rotation prevention means, and a handle provided inside the cabinet being turned. A release means is provided to release the latch from the latch receiver by releasing the stop and further turning the handle to rotate the latch lock body, and a push rod, which is a conventional means for unlocking the inside of the refrigerator, is passed through the release means. That is.

Embodiment Figures 1 and 2 show an embodiment of the present invention.
Components that are the same as those of the prior art are designated by the same reference numerals. The latch lock body 10 in this embodiment is similar to the conventional latch lock body 3 having the lever 5 and the latch 6.
A separate seat 11 is attached to the bottom of the seat. The seat 11 and the latch lock main body 3 may be integrated to form the latch lock main body of the present invention. Konoza 11
A rotating shaft 12 is attached to the holder, and a screw hole 14 for fixing a screw 13 serving as a guide pin is formed therein. In this embodiment, a screw 13 is attached to a screw hole 14, and a cover 15 (described later) is attached.
is attached to the screw 13 to serve as a guide pin.
The rotating shaft 12 has a cylindrical shape with a through hole, and a thread is cut around the periphery.

The mounting seat 16 is fixedly attached to the outer surface of the door 1 with screws 17. A through hole 18 through which the rotary shaft 12 is passed, and a guide hole 19 through which a guide pin consisting of a screw 13 and a cover 15 is passed are formed in the flat part. The through hole 18 is a normal circular hole, and the guide hole 19 is an arcuate elongated hole centered on the through hole 18. A green 20 is formed around the mounting seat 16 to provide a space between the flat part and the door surface. This mounting seat 16 is further provided with a stopper 21 on its back surface. This stopper 21 is a rectangular projection that projects from the flat surface of the mounting seat toward the door, but its shape does not necessarily have to be rectangular.

The latch lock body 10 has a rotating shaft 12 through a through hole 18.
Insert the screw 13 into the guide hole 19 and tighten the nut 22.
is attached to the rotating shaft 12 and rotatably attached to the mounting seat 16 along the guide hole 19. Since this latch lock main body 10 is rotated around a rotating shaft 12, it is desirable that the rotating shaft 12 be provided at the end of the latch lock main body at the push rod installation part.

A guide pin is sandwiched between the rotating shaft 12 and the stopper 21 so that the slide plate 23 can freely slide.
and can be attached rotatably. One end of this slide plate 23 has a long hole 24 formed therein, and the other end is formed into a fork shape capable of holding a guide pin and a stopper 21 between both arms 25. As mentioned above, the guide pin is a screw 13 with a cover 15 attached to it.
5 is inserted between the forks of the slide plate 23 and into the guide hole 19. Since the stopper 21 is interposed between the arms 25 of the slide plate 23 and the guide pin is further interposed therebetween as described above, the latch body 10 is prevented from rotating. That is, in this embodiment, the guide pin, the stopper 21 and the slide plate 23 are
This constitutes a rotation inhibiting means for inhibiting the rotation of the latch lock body 10. Head 15b of the cover 15
is larger than the distance between the arms 25 of the slide plate 23, and the latch lock body 10 is attached to the mounting seat 1.
It is fixed so that it does not fall out from 6.

The stopper 21 is sized to be removed from the arm 25 by sliding of the slide plate 23. When the slide plate 23 slides and the arm 25 is removed from the stopper 21, the latch body 10 rotates about the rotation axis 12 by further rotation of the handle 31. The long hole 24 of the guide plate 23 is provided with a notch 26 for sliding the guide plate.

The tip of the rotary sleeve 27 is inserted into the elongated hole 24 . A long hole 24 is provided at the tip of this rotating sleeve.
A protrusion 28 is formed to fit into the notch 26 of. This rotating sleeve 27 has insulation properties.
It is made of plastic such as FRP and has a cylindrical shape, and is threaded at the end opposite to the end where the protrusion 28 is formed, and is further provided with a groove 29 in the longitudinal direction. The length of the rotating sleeve 27 is approximately equal to the thickness of the door 1, and the end portion provided with the groove 29 projects toward the inside of the door. Nut 30 on this protruding part
A handle 31 is attached via a nut 32. The handle 31 has a hole 33 inserted into the tip of the rotating sleeve, and the groove 29 is inserted into the hole.
A protrusion 34 that fits therein is protruded, and rotation of the handle rotates the rotary sleeve 27. The projection 2 is rotated by the rotation of the rotating sleeve 27.
8 rotates, the slide plate 23 slides by the notch 26 that engages with it, and when its tip is removed from the stopper 21 and the rotating sleeve 27 is further rotated, the slide plate 23 also rotates together. Rotates around axis 12. That is, in this embodiment, the rotating sleeve 27 having the handle 31 and the sliding means of the slide plate 23 constitute an unlocking means.

A push rod 35 similar to the conventional one has a nut 32, a hole 33 in the handle 31, a nut 30, a rotating sleeve 27,
The lever 5 is attached so that it can be moved into the latch body 10 through the elongated hole 24 of the slide plate 23 and the rotating shaft 12, that is, through the unlocking means. The pin 36 formed on the push rod 35 is installed on the push rod through a long hole 37 provided in the rotating sleeve 27.
It plays a role in preventing it from falling out.

Since this embodiment has the above configuration, the latch 6 can be locked and unlocked by locking and releasing the latch 6 from the latch receiver 4 using the lever 5 as in the conventional case.
Furthermore, the lock can be unlocked from inside the refrigerator using the push rod 35. These are the same as before.

Next, the unlocking operation according to this embodiment when the push rod 35 cannot be pushed for some reason will be explained based on FIGS. 3A to 3B. Figure A is the normal state. The arm portions 25 of the slide plate 23 sandwich the stopper 21. Accordingly, the latch lock body is fixed. When the handle 31 is turned, the rotary sleeve 27 is rotated by the protrusion 34, and the slide plate 15 is slid by the notch 26 into which the protrusion 28 is fitted, as shown in FIG.
This sliding of the slide plate 15 causes the stopper 21 to come off from the arm 25, and the latch body 10 is no longer supported. Therefore, when the handle 31 is further turned, the latch lock main body 10 moves to the rotation axis 1 as shown in C.
2, and the latch 6 is released from the latch receiver 4.

Since this embodiment is symmetrical, it can be attached to either the left or right side of the door. Furthermore, the notch 26 and the protrusion 28 may be formed on the upper side, contrary to the illustration, and the latch body may be rotated upward to unlock the latch.

Modification FIG. 4 shows a slide plate 38 of another embodiment. The difference from the one in FIG. 1 is the sliding means for sliding this plate 38, and the long hole 39 of this plate 38
forming a latch 40 at the tip 4 of the rotating sleeve.
1 is provided with a pinion 42 that meshes with a rack 40. The rotation of the rotating sleeve rotates the pinion 42, moves the rack 40, and slides the slide plate 38. The other parts are the same as those in FIG.

Effects of the Invention As described above, in the present invention, the latch lock main body is rotatably attached to the mounting seat, the rotation is always stopped by the rotation prevention means, and the rotation is stopped by the release means having a handle provided on the inside of the refrigerator. Since the lock is released, by turning the handle inside the refrigerator, the latch lock body rotates and the latch is removed from the latch receiver. Therefore, even if someone is inside the refrigerator and it is locked, the refrigerator can be opened from inside by rotating the handle. Since it also has a conventional push rod, the present invention has a double safety mechanism.

In addition, the present invention has a push rod, which is a conventional means for unlocking the inside of the refrigerator, and this push rod is passed through the unlocking means, so a hole provided in the door is used for the unlocking means, and unnecessary work is required. There is no need to provide holes in the door or side walls. Therefore, even as a double safety mechanism, the heat insulation properties will not deteriorate.

Furthermore, since the conventional push rod hole is used, there is no need for special processing on the door or side wall, and processing is easier than with other latch locks having a double safety mechanism.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the embodiment of the present invention, Fig. 2 is a plan view of the above embodiment showing the seat and mounting seat in cross section, and Figs. 3 A to 3 are the latch lock body and slide plate of the above embodiment. FIG. 4 is a plan view of a slide plate of another embodiment, and FIG. 5 is a sectional view of the vicinity of the freezer door. 1...Door, 2...Latch lock, 3...Latch lock body, 4...Latch receiver, 5...Lever, 6...Latch, 7...Push bar, 10...Latch lock body, 11...
... Seat, 12... Rotating shaft, 15... Cover, 16...
...Mounting seat, 18...Through hole, 19...Guide hole,
21... Stopper, 23... Slide plate, 24... Long hole, 25... Arm, 26... Notch, 27... Rotating sleeve, 28... Protrusion, 29
...Groove, 31...Handle.

Claims (1)

[Claims for Utility Model Registration] (1) A latch lock body having a latch and a lever for moving the latch is attached to the outside of the door, a latch receiver is provided on the side wall, and the latch is locked to the latch receiver by the lever. In the refrigerator interior unlocking device, the latch lock is fixed to the door and is provided with a push rod that protrudes from the inside of the refrigerator and can be pushed in from the inside of the refrigerator to move the lever and unlock the lock. and a mounting seat for rotatably attaching the latch lock body, a rotation inhibiting means for restraining rotation of the latch lock body, and a rotatable handle inside the refrigerator, the handle and the inhibiting means. What is claimed is: 1. An unlocking device for a refrigerator or the like, characterized in that a release means is provided between the locking means and the locking means for releasing the restraint of the restraining means by rotating a handle, and for allowing the push rod to pass through the inside. (2) The rotation suppressing means includes a circular through hole formed in the mounting seat, a guide hole formed in the mounting seat in an arc shape centered on the through hole, and a guide hole provided on the door side surface of the mounting seat. A stopper, a rotation shaft that is inserted into the through hole provided in the latch lock body and is the rotation center of the latch lock body through which the inside penetrates, and a rotation shaft that is centered on the rotation axis with one end on the door side of the mounting seat. The slide plate is rotatably and slidably attached, and the other end is shaped like a hawk, and the other end is inserted into the guide hole provided in the latch body, and the tip of the slide plate is inserted into the guide hole provided in the latch body. The release means has one end attached to the slide plate and the other end penetrating through the door to the inner side of the door so as to be rotatable, and the release means has one end attached to the slide plate by the rotation of the guide pin. An internal solution for a freezer or the like as set forth in claim 1 of the Utility Model registration claim, which comprises a rotary sleeve having a sliding means for sliding, and a handle attached to the inner end of the rotary sleeve for rotating the rotary sleeve. Locking device.