JPS5820749Y2 - Locking device for folding doors in goods storage warehouses, etc. - Google Patents

Description

[Detailed description of the invention] A second door is hinged to the free end edge of the first door attached to the side edge of the opening of the box body, and while the hinge part protrudes forward, the free play of the second door is In an article storage facility with a pair of left and right folding doors that are opened and closed by moving the edges along both the upper and lower edges of the opening, a single cylinder lock installed on one folding door can be used to open and close both doors. Regarding a locking device that not only locks the folding door to the box body at the same time, but also allows the door to be closed without any problem even if the door is opened, and also automatically locks both folding doors. The present applicant previously filed an application for utility model registration as Utility Model Application No. 16208/1983.

However, in this case, since the pin always protrudes from the side of one folding door when the door is opened, there is a risk that the pin or the item may be damaged or the person handling the item may be injured when taking out or taking in the stored items.

The present invention solves the above-mentioned drawbacks, and also expands the movement of the locking lever that locks the other folding door, which is not equipped with a cylinder lock, etc., through a link mechanism, so that it can be locked more reliably and firmly. The present invention relates to a locking device that is particularly effective when applied to large-sized article storages, and will be specifically explained below based on the attached drawings.

L-shaped support fittings 2, 2, 2', 7 are fixed to the four corners of the front opening of the box 1 of the article storage.

Between the upper support fittings 2.2 and the lower support fittings 7.2'
Guide rods 3, 3' are installed between them.

Reference numeral 4 denotes a pair of left and right folding doors that close the front opening of the box body 1, and the first door 4a of each folding door 4 has vertical pins 5.5' protruding from both upper and lower ends of its base end. The base end of the second door 4b of the folding door 4 is pivoted with a hinge 6 to the free end of each first door 4a which is pivotally supported on the support fittings 2, 2' on the same side. Guide fittings 8 and 8' having horizontal through-holes are pivotally attached to the upper and lower ends of the free end of the door 4b with vertical pins 7 and 7', and are slidably fitted onto the guide rods 3 and 3', respectively. ing.

Therefore, each folding door 4 can be folded so that the hinge portions of the first door 4a and the second door 4b protrude forward.

A square handle frame 10 with an open front is fitted from the outside into a window hole 9 cut in the center of the free end of the second door 4b.

As shown in FIGS. 3 and 4, at the end of the handle frame 10 in the proximal direction of the second door 4b, there is a handle shaft 12 extending through the proximal end of the plate-shaped opening/closing handle 11. pivoted,
A rearwardly bent portion 12a is bent at the lower end of the handle shaft 12 passing through the handle frame 10.

Below the handle frame 10 on the inner surface of the second door 4b, a second
A rotating plate 13 as described below, which is parallel to the door 4b, is pivotally mounted with a horizontal pin 14.

The bent portion 12a of the handle shaft 12 engages with a hook 13a cut at the upper end of the rotating plate 13 toward the proximal end of the second door 4b, and the bent portion 12a of the handle shaft 12 engages with a hook 13a cut at the upper end of the rotating plate 13 toward the proximal end of the second door 4b. (The bent piece 13b is folded horizontally and faces forward.

A latch device A as described below is provided at the upper end of the free end portion of the inner surface of the second door 4b.

As shown in FIG. 2, the latch device A includes a box-shaped mounting bracket 15 fixed to the inner surface of the second door 4b, and this mounting bracket 1.
a latch 16 that is held in a vertically movable manner by the latch 5; and an engaging claw 16 that is connected to the upper end of the latch 16 and whose upper surface slopes backward and downward.
a and the mounting bracket 15 is screwed downward at the lower end of the latch 16.
The latch shaft 17 is configured to slidably pass through the lower piece 15a of the latch shaft 17, and a compression coil spring 18 is wound around the latch shaft 17 and urges the latch 16 upward.

The latch 16 is normally biased by the spring 18 to 1lS.
1, and when the door is closed, the engaging claw 16a projects into an engaging hole 19 cut near the opening of the box 1 and engages with it.

The lower end of the inner free end of the second door 4b and the box body 1 are provided with a latch device A' having the same configuration as the above-described latch device A and vertically symmetrical, and an engagement hole (not shown). ing.

The lower end of the latch shaft 17 of the upper latch device A, the free end direction end of the second door 4b of the rotary plate 13, the upper end of the latch shaft 17' of the lower latch device A', and the second end of the rotary plate 13. The proximal end of each door 4b is connected to the wire 2.
It is linked with 0.20'.

Therefore, each folding door 4 in the closed state pulls its handle 11 forward (thereby, the rotating plate 13 rotates in the direction shown by the arrow in FIG. 4, and both wires 2020' are pulled). , both latches 16, 16' move toward each other, the engagement between both latch devices A, A' and the box body 1 is released, and the door can be opened.

When closing the folding door 4, press both latches 16°16'.
The inclined surface of the engaging claw 16a (the lower engaging claw is not shown) comes into contact with the opening edge of the box 1, and the spring 18 (the lower spring is not shown) is automatically compressed. 16.1 Both latches
6' each go over the opening edge and the corresponding engagement hole 1
9 (the lower engagement hole is not shown) and engages.

At this time, since the wires 20, 20' that connect both latches 16, 16' and the rotating plate 13 are flexible, the rotating plate 13
and the handle 11 are both stationary.

A cylinder ← anchor 21 is fitted below the rotating plate 13 of the second door 4b of the folding door 4 on the right side of FIG. A vertically elongated locking plate 22 is attached.

When the cylinder lock 21 is unlocked, the upper end of the lock plate 22 is spaced below the left part of the bent piece 13c of the rotating plate 13.

Reference numeral 23 denotes a link that is parallel to the second door and bent into a substantially dogleg shape, and is located on the left side of the locking rod 22 in FIG. ing.

Elongated holes 25 and 26 are formed at both upper and lower ends of the link 23, respectively, in the direction of the pin 24, and the distance between the pin 24 and the elongated hole 25 is sufficiently larger than the distance between the pin 24 and the elongated hole 26. It is being

The link 23 is attached to the lower end of the locking plate 22 in the elongated hole 26.
It is pivotally mounted with a horizontal pin 27, and the fourth
Pressing rod 28 facing left in the figure and having a tapered tip
It is pivotally attached to the horizontal pin 29.

At a point on the opposing surface of the rectangular cylindrical edge frame 4C provided around each folding door 4 and at the same height as the pressing rod 28, there is a guide that is horizontal and faces toward the inside plate of each edge frame 4c. A tube 30 is attached therethrough.

The free end of the pressing rod 28 is slidably fitted into the guide tube 30 on the right side of FIG. 4, and the Q free end is recessed into the guide tube 30 when the cylinder lock 21 is unlocked.

A mounting bracket 31 having a U-shape in front is fixed to the left side of the inner plate of the edge frame portion 4c on the left side of FIG. 4 so as to be at the same height as the guide tube 30.

32 is a locking rod, and a coaxial pressure receiving pin 32b and a locking pin 32c are connected to both sides of a central flange 32a.

The pressure receiving pin 32b penetrates through the inner plate of the edge frame portion 4c and is slidably fitted into the left guide cylinder 30, and the locking pin 32c
passes through the center piece 31a of the mounting bracket 31.

This locking rod 32 has a flange 32a and a mounting bracket 31.
A compression coil spring 33 wound between the central pieces 31a of the cylinder is biased toward the guide tube 30, and when the cylinder lock 21 is unlocked, the tip of the pressure receiving pin 32b is positioned near the outer end of the guide tube 30. At the same time, the tip of the locking pin 32c is located near the lower right portion of the bent piece 13b of the left rotating plate 13.

In the storage with the above-mentioned structure, when both folding doors 4.4 are closed and the cylinder lock 21 is locked, the locking plate 22 rises and its upper end locks as shown by the arrow in FIG. However, as shown by the imaginary line, the bent piece 13c of the rotating plate 13
, and prevents the rotating plate 13 from rotating in the direction of the arrow, and also causes the link 23 to rotate in the direction of the arrow around the pin 24, so that the pressing rod 28 moves in the direction of the arrow, and the tip thereof moves in the direction of the arrow. It protrudes from the guide tube 30 on the right in FIG. 4 and enters the guide tube 30 on the left as shown in FIG.

Then, the locking rod 32 is pushed by the locking plate 22 and the spring 3
3, the tip of the locking pin 32c is located directly below the bent piece 13c of the rotating plate 13 on the left side of FIG. 4, as shown by the phantom line, and its rotation Rotation of the plate 13 in the direction of the arrow -U5fl is stopped.

Therefore, the door opening operation of both handles 11.11 becomes impossible, and both folding doors 4, 4 are locked to the box body 1.

As described above, in the link 23, the distance between the pin 24 and the long hole 25 is made sufficiently larger than the distance between the pin 24 and the long hole 26, so the movement of the locking plate 22 is expanded and the movement of the locking rod 32 is expanded. Since this is transmitted, the braking of the left rotary plate 13 is reliable.

Further, as shown in FIG. 6, when the left folding door 4 is closed and the right folding door 4 is opened, the cylinder lock 21 is locked and the tip of the pressing rod 28 is When the door is closed with the door protruding from the right guide tube 30, the folding door 4 is automatically locked and the pressing rod 2 is closed.
Immediately before the door is closed, the tip of 8 points to the side and moves laterally, so it enters the guide tube 30 on the left side of FIG. 4 without any trouble, moves the locking rod 32 laterally, and this Lock door 4 as well.

Furthermore, when the folding door 4 on the left side of FIG. 4 is opened, the folding door 4 on the right side is closed, and the cylinder lock 21 is in the locked state, although not shown, the same as above occurs.
The left folding door 4 can be closed without a problem and both folding doors 4.4 can be locked.

As described above, according to the locking device of the present invention, one cylinder lock 21 can be locked not only when the double-folding door 4.4 is closed, but also when the door is opened. Even if the lock plate 22 is moved, the door can be closed and locked without any trouble, making the operation easy and convenient. In particular, in the device of the present invention, the movement of the lock plate 22 is magnified and transmitted to the lock rod 32 as described above. Therefore, the folding door 4 on the left side of FIG. 4 can be securely locked, and is effective when used in a large article storage.

Furthermore, since there are usually no protruding objects on the side edges of the double-folding doors 4 and 40 when the doors are opened, there is no risk of damaging the stored articles or injuring the person handling the articles when taking them in or out.

[Brief explanation of the drawing]

Fig. 1 is a front view of an article storage equipped with the device of the present invention, Fig. 2 is an enlarged sectional view taken along the line X-X of Fig. 1, and Fig. 3 is an enlarged sectional view taken along the line Y-Y of Fig. 1; Figure 4 is an enlarged rear view of the main parts of both folding doors, Figure 5 is a sectional view taken along the line z-Z in Figure 4 when both folding doors are locked, and Figure 6 is an enlarged rear view of one of the folding doors equipped with a cylinder lock. 5 is a diagram corresponding to FIG. 5 in a state where the door is about to be closed by the locking operation and the other folding door is already closed; FIG. A... Latch device, 1... Box body, 2.
・-・・Support metal fittings, 3・・Guide rods, 4・・・・
...Folding door, 4a...1st door, 4b...
...Second door, 4C...Edge frame, 5...
・Pin, 6...Hinge, 7...Pin, 8
...Guide fitting, 9...Window hole, 10...
...Handle frame, 11...Nordle, 12.
...Handle shaft, 12a...Bent part, 1
3... Rotating plate, 13a... Hook piece, 13
b...Bent piece, 14...Pin, 15.
...Mounting bracket, 15a...Lower piece, 16.
...Latch, 16a...Engagement claw, 17.
... Latch shaft, 18 ... Spring, 19 ...
...Engagement hole, 20...Wire, 21...
... Cylinder lock, 22 ... Lock plate, 23.
...Link, 24...Pin, 25゜26
...Long hole, 27...Pin, 28...
...Press rod, 29...Pin, 30...
・Guide tube, 31...Mounting bracket, 31a...
・・Central piece, 32・・・・Lock rod, 32a・・・・
・Flange, 32b... Pressure receiving pin, 32c...
...Lock pin, 33... Spring.

Claims (1)

[Scope of utility model registration request] The proximal edge of the second door is hinged to the free edge of the first door, whose proximal edge is pivotally attached to the side edge of the opening of the box so as to be able to swing around a vertical axis, and the hinged portion is attached to the free edge of the first door. The opening is closed by a pair of left and right folding doors that protrude forward and are opened by moving the upper and lower ends of the free edge of the second door along the upper and lower edges of the opening. In goods storage, etc., a handle for opening/closing is installed at the appropriate location on the front of each folding door.
A polygonal rotating plate is pivotally attached to the rear surface of each second door with a horizontal pin and rotates when the handle is operated, and a handle is connected to the rotating plate provided at both upper and lower ends of each second door A latch device includes a latch that moves up and down when operated to engage and disengage from engagement holes drilled in both the upper and lower edges of the box opening, and a latch device that rotates downwardly to the second door of one of the folding doors. A lock is installed near the board, and the lock is attached to the lock facing the rotating plate, and moves when the lock is locked and unlocked.When the lock is locked, one end touches one side of the rotating plate, and the rotation a locking plate that prevents the locking plate from moving; a link having a substantially central portion on the side of the locking plate pivoted to the second door and one end pivoted to the other end of the locking plate; and a link facing the free end direction of the second door. , one end of the link is pivotally connected at a location that is sufficiently larger than the distance between the pivot part of the link to the second door and the pivot part of the link to the locking plate at the other end, and the other end is pivoted at a point where the pivot part of the link is connected to the second door and the pivot part to the lock plate. A pressing rod that enters and exits from the free end edge of the second door and a pressing rod that is movable laterally in the extension direction of the pressing rod on the second door of the other folding door, and when the lock is unlocked, one end moves in and out of the second door. 2 The free end is located on the inside of the door, and the other end is located on the side of one side of the rotating plate of this door, and when the lock is locked, it is pressed against the pressure rod and moves laterally. A locking device for a folding red in an article storage, etc., comprising a locking lever whose other end is in contact with one side of a rotating plate and which locks the rotating plate.