JPH0453416Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention enables door groups consisting of a main door and at least one sub-door to be opened and closed by separate handle devices only in a predetermined order. This invention relates to an interlock device for a door that can be opened and closed.

(Prior art) For safety management of work processes, etc., groups of doors individually installed on multiple fixed frames such as rooms where equipment is installed, storage cases, etc. can be opened and closed only in a predetermined order. Devices that restrict opening/closing operations in any order other than the specified order include electronic interlock devices that use solenoids or electric circuits as a restraining means, and key interlock devices that share one key between the front and rear lock devices in series. There are mechanical interlock devices such as locks, and various types have already been proposed.

(Problems to be Solved by the Invention) The present invention belongs to the above-mentioned mechanical interlock device, and the purpose of the present invention is to have a simplified structure so that it can be manufactured easily and inexpensively, and prevents breakdowns and errors. To provide a door interlock device which operates without fear of activation and which makes it impossible to close and lock a main door until all adjacent sub-doors are normally closed and locked.

(Means for Solving the Problems) The door interlock device of the present invention will be explained below using the reference numerals in the attached drawings.
A main door locking rod 27 that is interlocked with the operating shaft 40 of the main door handle device 10, a sub door handle device 15 that is individually fixed to at least one sub door 2, and a sub door handle device A sub-door locking rod 18 that is interlocked with the operating shaft 48 of 15
and a main door locking device 3 which is fixed to the main fixed frame 56 and through which the tip 27a of the main door locking rod 27 enters and exits, and which is fixed to the sub fixed frame 57,
The tip 18a of the sub door locking rod 18 is biased toward the main door lock device 3 by the sub door lock device 4 that enters and exits, and the spring 28, so that the tip portion is inserted into the main door lock device 3. The main door interlocking rod 12 is inserted into the main door interlocking rod 12, and the drive pin 8 is pivotally connected to the case 43 of the main door locking device 3 by the pivot pin 7, and the tip of the main door interlocking rod 12 abuts on one end.
The L-shaped lock lever 11 is provided with a passive pin 26 at the other end that is pushed by the base end of the main door locking rod 27, and passes through the case 20 of the sub door locking device 4, and is secured by the spring 16. Main door lock device 3
A sub-door interlocking rod 13 that is biased in the direction and interlocks with the main door interlocking rod 12;
horizontal groove 1 in the tip 18a of the locking rod 18.
The locking plate 17 that engages with the locking plate 8c and the inner case 19 of the sub-door locking device 4 are accommodated in a sliding manner by a spring 26, and have a large-diameter through-hole 24 on the side surface and a narrow groove continuous thereto. Lock block 21 with 25
The lock block 21 is provided on the interlocking rod 13 for the sub-door, and is connected to the lock block 21 from the side through hole 23 of the inner case 19.
The stopper ring 22 can enter into the large-diameter through hole 24 but cannot enter into the split groove 18a.

(Function) The handle device that can be operated when all the doors are locked is main door handle device 1.
There are only 0. As shown in FIG. 3, the horizontal groove 18c of the sub-door locking rod 8 of the sub-door handle device 15
The tip 17a of the lock plate 17 is engaged with the lock bar 18 to prevent the lock bar 18 from descending.

When the operating shaft 40 of the main door handle device 10 is operated at a required angle, the operating plate 42 rotates and the main door locking rod 27 descends, escaping from the case 43 of the main door locking device 3. The main door 1 is then unlocked from the main fixed frame 56. In addition, following the descent of the main door locking rod 27 that was preventing the downward rotation of the L-shaped lock lever 11, the main door interlocking rod 12 and the sub door interlocking rod are biased by the springs 28 and 16. 13 slides forward toward the main door lock device 3, and the L-shaped lock lever 11 rotates downward.

Along with this forward sliding of the sub-door interlocking rod 13,
The stopper ring 22 escapes from the large diameter hole 24 of the lock block 21 and the side hole 23 of the inner case 19, and the tip 17a of the lock plate 17 is inserted into the lock rod 1.
8 escapes from the horizontal groove 18c. Here, when the operating shaft 48 of the sub-door handle device 15 is turned by a predetermined angle, the sub-door locking rod 18 descends and escapes from the outer case 20 of the sub-door locking device 4. As a result, the locking of the sub-door 2 with respect to the sub-fixing frame 57 is released.

At this time, the lock block 21 slides downward inside the inner case 19 due to the bias of the spring 26, and as shown in FIG. The grooves 25 of the lock block 21 come into contact with the stop ring 22. Therefore, the sub-door interlocking rod 13 cannot slide in the direction away from the main door locking device 3, and the main door interlocking rod 12 that interlocks with this cannot also slide in the same direction, and the L-shaped lock lever 11 cannot rotate upward.

Therefore, even if the main door locking rod 27 is raised by closing the main door 1 and turning the operating shaft 40 of the main door handle device 10, the main door locking rod 27
The L-shaped lock lever 11 prevents the main door locking device from entering the case 43. That is, it is impossible to lock the main door 1 while the sub door 2 is open.

Next, when the sub-door 2 is closed and the operating shaft 48 of the sub-door handle device 15 is turned in the locking direction, the sub-door locking rod 18 pushes up the lock block 21 against the bias of the spring 26. The stopper ring 22 has a large diameter through hole 24 of the lock block 21.
will be facing each other. After that, the main door 1 is closed and the operating shaft 40 of the main door handle device 10 is closed.
When turned in the locking direction, the main door locking rod 27 enters the case 43 of the main door locking device 3 to the necessary extent and locks the main door 1 to the main fixing frame 56 again.

The L-shaped lock lever 11 whose passive pin 26 is pushed by the tip of the main door locking rod 27 rotates upward around the pivot pin 27, and is pushed by the drive pin 8 of the L-shaped lock lever 11. The main door interlocking rod 12 slides backward in a direction away from the main door locking device 3, and the sub door interlocking rod 13 interlocking therewith also slides backward in the same direction. With this, the stopper ring 22 is attached to the inner case 1.
At the same time when the lock plate 17 enters the large diameter through hole 24 of the lock block 21 through the side hole 23 of the lock plate 9, the tip 17a of the lock plate 17 engages with the horizontal groove 18c of the lock rod 18, so that the sub door 2 is secured to the sub fixing frame 57. will be locked again.

(Example) In the illustrated example, the main door locking bar 27
The tip portion 27a of the main door locking device 3 enters and exits through a through hole 35 provided in the bottom wall plate portion 43a of the case 43 of the main door locking device 3. The tip end 27a of the locking rod 27 is constructed separately from the main body in order to have a length adjustment function, and the threaded rod portion 27b is screwed into the main body. The main door interlocking rod 12 is inserted through the through hole 71 of the side wall plate portion 43b of the case 43.

The seat 44 of the main door handle device 10 is fixed to the main door 1 with a nut 45, and the operating plate 4
2 is fixed to the operating shaft 40 with a bolt 41. The base end of the main door locking rod 27 is connected to the operation plate 42 by a pivot pin 59, and another downward locking rod 47 is connected to the operation plate 4 by a pivot pin 46.
It is connected to 2. Sub-door handle device 15
The catch seat 52 is fixed to the sub-door 2 by a nut 53, and the operation plate 50 is fixed to the operation shaft 4 by a bolt 49.
It is fixed to 8.

The base end of the sub-door locking rod 18 is connected to the operation plate 50 by a pivot pin 51, and another downward locking rod 55 is connected to the operation plate 50 by a pivot pin 54. The tip end 18a of the sub-door locking rod is also configured separately from the main body portion in order to have a length adjustment function, and the threaded rod portion 18b is screwed into the main body portion. The tip portion 18a of the sub door locking rod enters and exits through the through hole 36 of the bottom wall plate portion 20a of the outer case 20.

The main door interlocking rod 12 is not in direct contact with the sub door interlocking rod 13, and an intermediate interlocking rod 31 is inserted between the two. Length adjustment rods 61 are screwed into both left and right ends of the intermediate interlocking rod 31, and the tip surfaces of the main door interlocking rod 12 and the sub-door interlocking rod 13 are in contact with the large diameter head 62 of the length adjusting rod 61. Main fixed frame 5
The side wall plate 6 is provided with a through hole 63 through which the large diameter head 62 can retract, and the side wall plate of the sub-fixing frame 57 is provided with a through hole 64 through which the large diameter head 62 can pass.

A guide mechanism 5 is provided on the upper wall plate of the main fixed frame 56.
The intermediate interlocking rod 31 is inserted between a pair of upper and lower guide rollers 33, 33 provided on the base plate 34.
A pair of edge plates 32, 32 are fixed in the middle. A guide plate 29 is fixed to the case 43 of the main door locking device, and the tip of the main door interlocking rod 12 is inserted into the horizontal hole 9 of the side plate 29b of the guide plate 29, and the pivot pin of the L-shaped lock lever 11 is inserted. 7 is inserted and supported by a pair of upper and lower protruding plate portions 29a, 29a of the guide plate 29.

The sub-door interlocking rod 13 is inserted into a through hole 73 in the side wall plate portion 20c of the outer case. The biasing spring 16 of the sub-door interlocking rod 13 is a compression coil spring inserted between the E-ring 68 fixed to the interlocking rod 13 and the side wall plate portion 20b of the outer case 20. The stopper ring 22 is fixed to the sub-door interlocking rod 13 with a screw 74.

The biasing spring 28 of the main door interlocking rod 12 is connected to the E ring 69 fixed to the interlocking rod 12 and the case 4.
This is a compression coil spring inserted between the side wall plate portion 43b of No. 3 and the side wall plate portion 43b of No. 3. The other end of the sub-door interlocking rod 13 protrudes from the through hole 72 of the side wall plate 20b of the outer case 20, and connects to the adjacent sub-door (not shown) via the intermediate interlocking rod 31 similar to the above. It is linked to the interlocking rod for the sub door. The same is true no matter how many sub-doors there are.

The lock plate 17 is connected to the sub door interlocking rod 1 through the through hole 65.
3, and the sliding limit is set by an E-ring 66 fixed to the interlocking rod 13. The biasing spring 14 of the lock plate 17 is connected to an E ring 67 fixed to the interlocking rod 13 and the lock plate 17.
This is a compression coil spring inserted between the The key 37 is inserted into the sub-fixing frame 57 from the front side of the sub-door 2.
Equipped with an emergency release lock 30 operated by. An operating rod 39 which can come into contact with the lock plate 17 is fixed to an operating plate 38 which is fixed to the rotor of the lock 30 with bolts 60.

Even if the main door 1 cannot be opened for some reason, that is, even if the sub-door interlocking rod 13 cannot be slid in the direction of the main door locking device 3, the key 37 can be rotated and operated. By rotating the rod 39, the lock plate 17 is pushed in the direction of the main door locking device 3 with the operation rod 39 against the bias of the spring 14, and the tip 17a of the lock plate 17 is pushed against the locking rod. 18 through the horizontal groove 18c, and the sub-door 2 can be unlocked and opened.

(Effect of the invention) As described above, the door interlock device of the present invention includes the main door handle device 10 in which the main door locking bar 27 is interlocked with the operating shaft 40, and the operating shaft 40.
A sub-door handle device 15 which is interlockingly equipped with a locking rod 18 at 8, a main door locking device 3 through which a main door locking rod 27 enters and exits, and a sub-door lock through which the sub-door locking rod 18 enters and exits. It has a device 4, a main door interlocking rod 12 urged in the direction of the main door locking device 3 by a spring 28, a drive pin 8 on one end of which the main door interlocking rod 12 abuts, and the other end. L having a passive pin 26 on which the main door locking rod comes into contact.
The type lock lever 11, the sub-door interlocking rod 13 urged in the direction of the main door locking device 3 by the spring 16, and the lateral groove of the sub-door locking rod 18 equipped on the sub-door interlocking rod 13. The lock plate 17 engages with the lock plate 18c and is biased by the spring 6, and a large diameter through hole 2 is formed in the side surface.
4 and a lock block 21 having a narrow groove 25
It is provided on the interlocking rod 13 for the sub-door, and is capable of entering into the large diameter through hole 24 of the lock block 21, and has a dividing groove 18a.
The main component is a stopper ring 22 that cannot be penetrated, and because it has a relatively simple structure, it is easy and inexpensive to manufacture.
It operates without fear of failure or malfunction.

Furthermore, in the door interlock device of the present invention, the main door locking bar 27 is moved by the L-shaped lock lever 1.
1 and the main door interlocking rod 12 and are restrained by the sub door interlocking rod 13, so the adjacent sub door 2
If all of the doors are not closed and locked, it is impossible to close and lock the main door 1, and it has great practical value as an interlock device for controlling the opening and closing of a group of doors arranged side by side.

[Brief explanation of the drawing]

The drawings show a door interlock device according to an embodiment of the present invention. Figure 1 is a vertical right side view of the main door when all doors are closed and locked, and Figure 2 is a vertical right side view of the main door when all doors are closed and locked. Figure 3 is a vertical cross-sectional right side view of the sub-door when all doors are closed and locked, Figure 4 is a vertical front view of the main door and sub-door when all doors are unlocked, and Figure 4 is when all doors are unlocked. FIG. FIG. 5 is a perspective view of the main part of the main door locking device, and FIG. 6 is a perspective view of the main part of the sub door locking device. Figure 7 is a vertical right side view of the emergency unlocking mechanism section, Figure 8 is a vertical right side view of the main part of the sub-door locking device, and Figure 9 is a vertical right side view of the guide mechanism of the main door interlocking rod. It is. 1...Main door, 2...Sub door, 3...Lock device for main door, 4...Lock device for sub door, 5
...Guide mechanism for main door interlocking rod, 6... Passive pin, 7... Pivot pin, 8... Drive pin, 10...
Main door handle device, 40... Operating shaft, 11
... L-type lock lever, 12 ... Interlocking rod for main door, 13 ... Interlocking rod for sub-door, 14 ... Spring for urging, 15 ... Handle device for sub-door, 16 ... Spring for urging, 17 ...Lock plate, 18...Lock bar for sub door, 18c...Horizontal groove, 19...Inner case,
20... Outer case, 21... Lock block,
22...stopper ring, 23...side through hole,
24...Large diameter through hole, 25...Narrow split groove, 26...
Biasing spring, 27...Lock bar for main door, 28...
...Biasing spring, 29...Guide plate, 30...Emergency release lock, 31...Intermediate interlocking rod, 33...Guide roller, 35, 36...Through hole, 37...Key, 38
...operation board, 39...operation rod, 48...operation axis,
56...Main fixed frame body, 57...Sub fixed frame body.

Claims (1)

[Scope of utility model registration request] A main door handle device 10 fixed to the main door 1, a main door locking bar 27 interlocked with an operating shaft 40 of the main door handle device 10,
A sub-door handle device 15 individually fixed to at least one sub-door 2, a sub-door locking bar 18 interlocked with an operating shaft 48 of the sub-door handle device 15, and a main fixing frame 56. The main door locking device 3 is fixed to the main door locking rod 27, and the tip 27a of the main door locking rod 27 goes in and out. A door locking device 4, a main door interlocking rod 12 which is biased toward the main door locking device 3 by a spring 28 and whose tip end is inserted into the main door locking device 3, and a pivot pin 7. The drive pin 8 is pivotally attached to the case 43 of the main door locking device 3 by a drive pin 8 on one end of which the tip of the main door interlocking rod 12 abuts, and the other end is provided with a drive pin 8 that contacts the base end of the main door locking rod 27. It passes through the L-shaped lock lever 11 equipped with a passive pin 26 that is pushed by the sub-door lock device 4, and is biased by the spring 16 in the direction of the main door lock device 3. Interlocking rod 1
The interlocking rod 13 for the sub-door that interlocks with the sub-door interlocking rod 13 and the tip 18a of the locking rod 18 that is installed on the interlocking rod 13 for the sub-door.
The locking plate 17 engages with the horizontal groove 18c of the sub-door locking device 4, and is housed in the inner case 19 of the sub-door locking device 4 with a spring 26. It is provided on the lock block 21 provided with a split groove 25 and on the interlocking rod 13 for the sub-door, and can enter into the large diameter through hole 24 of the lock block 21 from the side through hole 23 of the inner case 19, but cannot enter into the split groove 18a. Door interlock device consisting of a possible stopper ring 22.