JPH022853Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" The present invention relates to an earthquake-resistant library lock.

``Conventional technology'' When conventional steel furniture such as bookshelves, lockers, etc. need to be opened and closed frequently, the door is kept closed without being locked, using only a so-called door catcher such as a magnet or roller catch. is the current situation.

``Problems that the invention seeks to solve'' However, with such door catchers, the doors often opened inadvertently in the event of an earthquake or other accident, such as when the main body of the library tilted forward. In addition, since the doors of bookshelves and the like generally have double doors, there is a problem that even if they are locked, they may open accidentally due to vibrations or the like.

Therefore, in view of the above circumstances, this invention is an earthquake-resistant library lock that has a double lock mechanism that is the best for the function of a lock, and that can release the lock and open the door at the same time with a single operation of inserting a finger into the handle and pulling it. Our goal is to provide the following.

``Means for Solving the Problems'' The present invention was made to achieve the above object, and is a device that is attached to a front-opening case that also serves as a door handle, and that is attached to another door or the library body when the door is locked. In the library lock equipped with a lock that locks into the stop hole, the handle is rotatably supported in the case so that the handle can be pulled from the outside, and a crankshaft that engages with the handle and rotates when the puller is pulled. an actuating arm is connected to the crankshaft so that it can reciprocate in conjunction with the rotation of the crankshaft, and a locking device is connected to the actuating arm so that the library body and the door can be engaged and detached by the reciprocating movement, and a slider is slidably engaged with the cannula in conjunction with the locking of the cannula, and the slider has a handle that is unoperably locked when the cannula is locked, and the locking device is attached to the edge of the door. , and is formed in a square shape, so that the edge of the lock hole in the library body can be held between one of the square-shaped protrusions and the other protrusion, and the other protrusion can be attached to the outer edge of the lock hole when the door is closed. A lock cam is formed to be longer than one protrusion so that they can collide with each other, and is elastically biased in the direction of rotation in which the one protrusion comes out of the lock hole. An earthquake-resistant library comprising a stopper that is elastically biased in the locking direction of the lock cam when engaged with the lock cam and is coupled to an operating arm so as to be movable against the elastic bias in the direction that the lock cam is released from the lock cam. It features a lock.

"Embodiment" An embodiment of the earthquake-resistant library lock according to the present invention will be described below based on the drawings. In FIGS. 1 to 3, 1 is a right door and 2 is a left door. The right door 1 has a handle 4 with a lock 3, and the left door 2 has a handle 5.
is provided. As shown in FIGS. 3 and 4, the handle 4 is attached to a mounting hole of the right door 1 by fitting a case 6 and a plate 7 together. The case 6 has a support plate 8 as shown in FIGS. 4 and 6, and a pull handle 9 is swingably supported on the support plate 8. It is designed so that you can insert your finger inside and pull it. There are also tongue pieces 10 inside the case 6 that engage with the upper and lower front surfaces of the handle 9.
The crankshafts 11, 11 equipped with
2 and 12 are rotatably supported by operating arms 13 and 13, respectively. Each actuating arm 13,1
As shown in FIG. 5, 3 faces outward from the upper and lower walls of the case 6, and a spring 14 is interposed between them, so that the springs 14 repel each other. That is, it is biased in the direction of outward protrusion. Each actuating arm 1
3 and 13 have protrusions 15 which are fitted into elongated holes 16 formed in the bottom wall of the case 6, thereby guiding the protrusion and retraction movements of the operating arms 13 and 13, In addition, in order to guide this protruding and retracting movement as well as to prevent the spring 14 from coming off, a rod 17 is integrally provided on the opposite side of one of the actuating arms 13, and this rod 17 is fitted into the opposite side of the other actuating arm 13. It has a freely fitting hole 18. Each of the operating arms 13, 13 is connected to a locking device 20 fixed to the upper and lower inner surfaces of the right door 1 via interlocking rods 19, 19.
The lock 3 has a bolt 21 that rotates when locking and unlocking, and when the lock is locked, the bolt 21 passes through the insertion hole 22a of the right door 1 and into the locking hole 22 of the left door 2.
An engagement piece 23 is formed on this cannula 21, and is designed to engage with a slider 24 and cause the slider 24 to slide as the cannula 21 rotates. . As shown in FIGS. 6 and 9, the slider 24 has protrusions 25, 25 protruding from the handle 9 and a locking portion 26 that can be freely engaged and detached. Long holes 27, 27, 27a, 27 drilled in the side wall
Protrusions 28, 2 that are fitted into a and guided in sliding
8, 28a, 28a.

On the other hand, in the locking device 20, as shown in FIGS. 7 and 8, a stopper rod 30 is inserted into a vertical through hole of a case 29 so as to be vertically movable. A locking portion 31 is formed at the top of the stopper rod 30 to lock the top wall of the case 29 to prevent it from coming off. This stopper rod 30 is integrally formed with a stopper 32 that can freely protrude and retract from a hole in the top wall of the case 29, and this stopper 32, that is, the stopper rod 30, is elastically biased by a spring 33 in the direction of protruding from the top wall of the case 29. There is. On the outer surface of the top wall of the case 29, there is a crotch-shaped lock cam 35 that fits into a lock hole 34 formed at the front edge of the library body A and can be freely engaged and detached.
is rotatably supported, and this lock cam 3
5 can be freely locked with the stopper 32, and is elastically biased by a spring 36 in the locking direction and in the direction in which one protrusion 35a is removed from the lock hole 34. A lock cam 35 is installed in the lock hole 34.
A hole edge material 3 provided with a protrusion 37 that fits into the crotch shape of the hole.
8 is installed. This hole edge material 38 does not necessarily have to be installed. If it is not installed, insert the crotch-shaped inner diameter of the lock cam 35,
The lock hole 34 is formed to match the thickness of the hole edge.

When both doors 1 and 2 are closed and unlocked, the actuating arms 13 and 13 are pushed out by the elastic force of the spring 14, and as a result, as shown in FIGS. 7 and 8, , actuation arm 1
The stoppers 32, 32, which are integrated with the stopper rods 30, 30 through 3, 13, are also connected to the cases 29, 29.
protrudes from the top wall of the lock cams 35, 35 and engages with the lock cams 35, 35 and the lock holes 34,
34 is maintained. Therefore, the library body A
Even if the doors 1 and 2 are vibrated and tilted due to an earthquake and a force in the opening direction is applied to the doors 1 and 2, each lock cam 35 and
35 and the lock holes 34, 34 prevent the door from being opened inadvertently.

Next, in order to open the door, put your finger into the handle 4 of the right door 1 and pull the handle 9 as shown in FIG.
is pressed, so the crankshaft 11 rotates in the direction of arrow C, and as a result, the arm 1 of the crankshaft 11 rotates in the direction of arrow C.
2 and 12 also swing in the direction of arrow D, the actuating arms 13 and 13 slide in the direction of retraction, that is, toward each other, against the biasing force of the spring 14. Therefore, the stopper rods 30, 30 are also pulled in through the respective interlocking rods 19, 19 against the urging force of the spring 33, and the stopper 32 disengages from the lock cam 35 and sinks into the case 29. The lock cam 35 rotates under the elastic force of the spring 36, and one of the crotch-shaped protrusions 35a locks into the lock hole 3.
4, and the right door 1 can be opened. When the right door 1 is in the open state, the stopper 32 is in a state where it can rotate under the elastic force of the spring 36 as shown by the two-dot chain line in FIG.
It simply contacts the bottom surface of the holder and can be rotated by external pressure. Next, when the right door 1 is closed, one protrusion a of the lock cam 35 fits into the lock hole 34, and at the same time the other protrusion 35b abuts against the edge of the lock hole 34 or the protrusion 37, thereby locking the lock cam 35. The lock cam 35 rotates against the bias of the spring 36, and at the same time the lock cam 35 and the edge of the lock hole 34 are engaged, the stopper 32 is released from contact with the bottom surface of the lock cam 35 by the spring 33 and protrudes. It engages with the lock cam 35 to lock the lock cam 35 unrotatably.

On the other hand, when the lock is locked, the cannula 21 rotates as shown in FIGS. slide. Then, the protrusions 25, 25 of the handle 9 move to the slider 24.
while being guided by the inclined surfaces 24c, 24c of the locking portions 26, 26, making it impossible to operate the handle 9,
The lock provided by the locking device 20 becomes unreleasable. When the lock is unlocked, the cannula 21 moves back, and during this back movement, the engaging piece 23 engages with the other engaging piece 24b of the slider 24, causing the slider 24 to move back, and the locking portion of the slider 24 26, 26 and the protrusions 25, 25 of the handle 9 are disengaged. When the backward movement of the cannula 21 is completed, the engagement piece 23 of the cannula 21 disengages from the engagement piece 24b of the slider 24, but as the engagement piece 23 of the cannula 21 rotates, the engagement piece 24a of the slider 24, 24b, and may be freely engaged with and disengaged from the engaging pieces 24a and 24b, respectively.

"Effect of the invention" As described above, according to the earthquake-resistant library lock according to the present invention, when the lock is locked, the cannula fits into the locking hole, and at the same time the cannula engages with the slider and slides, and the slider pulls the handle. This is the so-called double lock mechanism that locks the handle and makes it impossible to pull the handle.It is the best function of a lock, and it is possible for one lock and the other lock to mutually assist each other. For example, even if one lock is incomplete, the other lock can keep the door closed.
It is extremely convenient to use. Furthermore, when the door is closed, one protrusion of the lock cam fits into the lock hole, while the other protrusion abuts against the edge of the lock hole. , the lock cam rotates, and as a result, both protrusions clamp the edge of the lock hole, and at this time, the stopper locks with the lock cam with an elastic biasing force. It does not come off even under strong vibrations and maintains a firm lock. Moreover, in order to unlock the lock device, when unlocking the door, all you have to do is pull the handle, and the stopper disengages from the lock cam in conjunction with the movement of the actuating arm. can be rotated and removed from the lock hole, and although the lock is locked by a double mechanism, it is extremely easy to release the lock, and therefore the operation is extremely easy and convenient.

[Brief explanation of the drawing]

The drawings show an embodiment of the earthquake-resistant library lock according to the present invention, and FIG. 1 is a rear view of the entire earthquake-resistant library lock as seen from the inside of the door, FIG. 2 is a side view, and FIG. Figure 1 is a cross-sectional view taken along the - line in Figure 1, Figures 4 to 6 are longitudinal cross-sectional views of essential parts of the earthquake-resistant library lock, Figure 7 is a plan view of the locking device, and Figure 8 is a cross-sectional view taken along the - line in Figure 7. FIG. 9 is a mechanical diagram of the main part showing the operating state of the earthquake-resistant library lock. 1...Right door, 2...Left door, 3...Lock, 4,
5... Handle, 6, 29... Case, 7... Plate, 8... Support plate, 9... Pull, 10... Tongue piece,
11...Crankshaft, 12...Arm, 13...
Actuation arm, 14, 33, 36...spring,
15, 25, 28, 37... protrusion, 16, 27...
...Elongated hole, 17...Rod, 18...Insertion hole, 19
...Interlocking rod, 20...Lock device, 21...
Cannula, 22... Locking hole, 23... Engaging piece, 2
4... Slider, 26, 31... Locking part, 30
...stopper rod, 32...stopper rod, 3
4...Lock hole, 35...Lock cam, 38...
Hole edge material.

Claims (1)

[Scope of utility model registration request] A library lock is attached to a case with a front opening that also serves as a door handle, and is equipped with a latch that locks into a locking hole in another door or the library body when the lock is locked. It is rotatably supported for operation, and also supports a crankshaft that rotates by engaging with a handle when pulled, and an operating arm is linked to the crankshaft so that it can reciprocate in conjunction with the rotation. A locking device is connected to the actuating arm so that the library body and the door can be engaged and detached by the reciprocating motion thereof, and a slider is slidably engaged with the lock in conjunction with the locking, and the slider is engaged with the locking device. When the can door is locked, the handle is pulled and locked so that it cannot be operated, and the locking device is attached to the edge of the door and is formed in a crotch shape, with one protrusion and the other protrusion in the crotch shape. It can hold the edge of the lock hole in the library body, and the other protrusion is made longer than one protrusion so that it can abut against the outer edge of the lock hole when the door is closed, and the other protrusion can be removed from the lock hole. A lock cam is elastically biased in the direction of rotation, and the lock cam is connected to an operating arm, and when the lock cam engages with the edge of the lock hole, the lock cam is elastically biased in the locking direction and is released from the lock cam. An earthquake-resistant library lock characterized by comprising a stopper connected to an operating arm so as to be movable against elastic bias in the direction of movement.