JP2005282293A - Double sliding door lock with smoke vent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double sliding door lock capable of solving such a problem that every conventional double sliding door lock is weak in terms of crimes prevention strength though many kinds of double sliding door locks are manufactured, operation is hard to operate, there is short of reliability in strength and operation, it is specially weak in the picking of a gap between inner and outer doors and that there is a weakness in an illegal unlocking performed from the gap between both inner and outer doors, so that the weakness is eliminated and, at the same time, it is easy to handle with high reliability. <P>SOLUTION: The double sliding door lock is equipped with a hook 14 for a fire-checking wall and a claw 9 on a door, and it is so constituted that the picking due to the smoke vent and the illegal unlocking performed from the gap between both inner and outer doors can be prevented. The construction of the lock is thereby simplified, the operation is easy to operate and, at the same time, reliability can be increased. In the door having the smoke vent, the fire-checking wall is utilized to make the similar lock, and locking strength of the lock can be improved only by fixed strength in the opening and closing direction of the door. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

    The present invention relates to crime prevention performance and operability improvement of a sliding door lock that locks the sliding door.

Patent Document 1 has a sliding door lock, and Patent Document 2 has a sash with smoke return.
A structure common to conventional sliding door locks and common problems will be described.
To date, many types of sliding door locks have been made. However, the sliding door locks that can be operated from the inside and outside of the room still have no high security and easy-to-use locks.

A common structure will be described with reference to FIGS.
The lock is attached to the outdoor door and the indoor door with the lock structure separated. Fig. 3A shows that the cannula with a sickle is rotated from the outer door side lock case to the lock receiving plate of the inner door lock case. It locks by hanging and prevents the spread of the koji between the inner and outer doors by hooking.

    To enable locking / unlocking operation from both the indoor and outdoor sides, the interlocking shaft protrudes from the outer door side lock case to the inner door side lock case, and the interlocking shaft protrudes from the inner door side lock case to the outer door side lock case . It can be locked and unlocked by the interlocking shaft regardless of which side is operated.

    In the figure, kanuki protrudes from the outer door side lock case, but there are also those that protrude from the inner door side lock case. In that case, a lock receiving plate is attached to the outer door side lock case side. One part of such a lock is one in which the operation mechanism of the lock is integrated in the inner door side lock case, and another part is operated by inserting the key into the cylinder of the inner door through the outer door.

Common problems will be described with reference to FIGS.
Use a crowbar to spread the koji between the inner and outer doors as shown in Figs. 4A and 4B.
In order to prevent this spread, the sickle provided on the kanuki in Fig. 3A is hooked on the lock holder and locked. However, due to the size and structure of the lock, the strength is very small, and the kanuki can be easily destroyed with a small bar. It will be spread out.

Unlocking can be unlocked by turning the interlocking shaft in a locked state using a wire etc. from the clear space between the inner and outer doors.
In order to prevent this, it is necessary to operate the guard mechanism together. There is also a need to keep the locked door in place even if it is lifted.
JP-A-9-151640 JP-A-8-189234

As a problem of rotating the kanuki and hooking the sickle onto the lock holder to lock it, the locking / unlocking operation performed by operating the key and lever becomes heavy and difficult to operate.
Rotating kanuki in a small tablet case and projecting it makes it impossible to secure effective strength for both kanuki, kanuki shaft and bearing.
Therefore, the lock is destroyed immediately by lightly spreading it with a small bar.

    Since the interlocking axis is moved together with the cannula and the guard mechanism that guards the interlocking axis is also moved at the same time, the structure becomes more complex and weak against destruction. The operation becomes heavier and harder to operate. Operation reliability is also reduced.

  In order to solve the above problems, effective crime prevention strength can be secured against widening of the koji, so that the locking and unlocking operation can be performed with a light force, the locking and unlocking operation can be performed smoothly, and the operation reliability is improved. It is a challenge to improve the overall strength of crime prevention as a sliding door lock with a simple structure.

  With the same dimensions and mounting method as conventional sliding door locks, none of the above problems can be solved. Therefore, we considered adding a function other than the lock to the sliding door lock and sharing the security function. As a measure to prevent the wrinkle of the dust between the inner and outer doors at the time of locking, it was considered to provide a smoke return on the lock.

Smoke return has been commonly used. A conventional smoke return will be described with reference to FIG. All conventional smoke smokers are attached to the door, and nothing attached to the lock is seen.
FIG. 5A can be seen mainly with aluminum windows.
FIG. 5B is sometimes seen with a steel draw door.
FIG. 5C is rarely seen in a type in which a three-sliding door is locked and unlocked with one lock.
The purpose of using smoke return at the door is significant as a stopper between doors.
If this smoke return is attached to the door, the smoke return can prevent the door from spreading out, prevent unauthorized unlocking from the gap between the inner and outer doors, and prevent the locked door from being removed.

For doors that do not have smoke return, the smoke return function can be achieved by assembling the smoke return to the lock. This is the sliding door lock according to claim 1, which is the lock shown in FIGS. 1 and 2.
The smoke return is formed by a hook provided on the front plate of the outer door side lock case and a claw provided on the lock receiving plate of the inner door side lock case.
In a sliding door lock with a lock holder on the outer door side lock case and a kanuki on the inner door side lock case, a hook is provided on the lock of the outer door side lock case, and a nail is attached to the front plate of the inner door side lock case. It will be provided.
FIG. 2A shows the unlocked state, and FIG. 2B shows the locked state.
Even if you try to widen the outer door and the inner door, you can't widen it by smoke return on the lock. The force that should be applied to the kanuki due to the spreading of the koji is not applied by the smoke return effect, and it is not necessary to take measures to spread the koji on the locking kanuki.
The smoke return shown in FIGS. 1 and 2 is composed of a hook provided on the front plate of the outer door side lock case and a claw provided on the lock receiving plate of the inner door side lock case, as described above. The reverse combination may be used. That is, it may consist of a claw provided on the front plate of the outer door side lock case and a hook provided on the lock receiving plate of the inner door side lock case.

If there is smoke return, unauthorized unlocking by inserting a tool through the gap between the inner and outer doors will not be possible at the same time. Therefore, it is not necessary to take measures to prevent unauthorized unlocking.
If smoke locks are provided on the lock, no sickle is needed on the kanuki like the kanuki of the lock shown in Fig. 3B. There is no need to take measures to prevent unauthorized unlocking from the gap between them. It is also possible to prevent the locked door from being lifted and removed, and the structure of the lock is simplified, the reliability of operation is increased, and a lock that can be operated with a light force can be made.
This is the sliding door lock according to claim 2.

If the door has smoke smoke, the lock need not have smoke smoke.
Because the door has smoke return, there is no need for a sickle in Kanuki, and there is no need to take measures to prevent unauthorized unlocking from the gap between the inner and outer doors. This is the sliding door lock according to claim 3.

It is possible to attach the sliding door lock according to claim 3 by providing a simple smoke return for a door without smoke return.
If a simple smoke return is provided on the door, it must be provided around the lock to protect it. If it is attached away from the lock, it cannot be protected from breaking with a wire or screwdriver.

For this purpose, the sliding door lock according to claim 4 is shown in FIG. 6 in which the lock and the smoke return are separated and attached in combination with the lock.
If the hook plate (93) is attached between the front plate (95) and the outer door (91), the crime prevention strength can be obtained.
If the claw plate (94) is mounted between the lock receiving plate (97) and the inner door (92), the crime prevention strength can be obtained.

The conventional sliding door lock has a sickle on the lock cannula so that all locks can be used without smoke return on the door, and measures to prevent unauthorized unlocking from the gap between the inner and outer doors It is also designed to prevent the locked door from being lifted off.
However, none of the conventional locks has a low strength against bulging, and no locks satisfying operability, operability and reliability are found.
The invention allows the smoke structure to be assembled to the sliding door lock, thereby enabling an unprecedented lock structure and improving the crime prevention strength and operability.
In addition, by using the smoke return function of the door with smoke return, it is possible to simplify the lock structure and improve the crime prevention strength and operability.
Provide smoke return on the sliding door lock. Or, it can be installed in combination with smoke evacuation to prevent unauthorized unlocking of the smoke evacuation from the gap between the inner and outer doors and the gap between the inner and outer doors, and to prevent the lock door from being lifted and removed. This makes it possible to produce a lock with high operability and reliability.

The sliding doors as shown in FIG. 5A are surprisingly many at the entrances of ordinary houses, classroom entrances of schools, and others. Among them, the lock of the present invention is effective when high crime prevention, operability and reliability are required.
When there is no smoke return on the door, the sliding door lock with smoke return according to claims 1 and 2 is effective. This is shown in FIGS.
When the door has smoke return, the sliding door lock in which smoke return is removed from the lock according to claim 3 is effective.

  Smoke return automatically and effectively prevents the spread of the koji between the inner and outer doors, and the prevention strength can easily be increased. Smoke returning can also effectively prevent unauthorized operation by automatically closing the gap between the inner and outer doors, and the doors cannot be removed even when the locked doors are lifted.

  If smoke return is used, it is only necessary to stop sliding in the door opening / closing direction as a security function that requires a lock. Since it is only necessary to ensure the function and strength of the lock, the structure becomes simple and the strength can be easily improved, and it becomes easy to make a lock with high strength and operation reliability as a lock.

The security functions required for sliding door locks are: strength against breakage that opens the door by opening the door between the inner and outer doors, strength to prevent breakage and unauthorized operation of the lock from the gap between the inner and outer doors, and prevention of door lifting Strength to prevent the door from being removed from the frame even when the door is lifted, and strength to stop the sliding of the door with the door closed.
There is no conventional sliding door lock that uses the smoke return function, and all these functions are secured by using only the lock function. This is the cause of the decline.

Smoke return is provided on the sliding door lock, or the smoke return function is used for the door with smoke return. You only need to concentrate on stopping the sliding of the door with the door closed. This is the principle of the sliding door lock of the present invention.
The structure of the lock is simplified. As a result, the strength of the lock is improved, the operation is light, the operability is good, and the lock is highly reliable.

It is an inside perspective view of the sliding door lock with the smoke return of the invention. A The unlocked state is shown on the horizontal screen in the A direction in FIG. B Shows the locked state. A An interior perspective view of a conventional sliding door lock outer door side lock case showing a cannula shape. B Shows the cannula shape of the sliding door lock according to claim 2. A This is a figure corresponding to Fig. 2B of a conventional sliding door lock, showing the expansion of the koji using a bar. B Shows the completion of Koji widening. A Shows the conventional smoke return mechanism on the sliding door. B Shows the conventional smoke return mechanism installed on the drawer door. C Shows the conventional smoke return mechanism installed on a three-piece sliding door. The sliding door lock according to claim 4, wherein the hook and the claw are separated from the lock and combined.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer door 2 Inner door 3 Inner door side lock case 4 Dressing seat 5 Operation lever 6 Mounting bar 7 Mounting screw 8 Lock receiving plate 9 Claw 10 Outer door side locking case 11 Dressing seat 12 Mounting bar 13 Front plate 14 Hook 15 Kannuki 16 Lock receiving hole 17 Outdoor side 18 Indoor side 19 Linking shaft 20 Cylinder 21 Gear 31 Front plate 32 Linking shaft 33 Cannuki 34 Sickle 35 Mounting screw 36 Outer door side lock case 37 Dressing seat 38 Mounting bar 39 Lock receiving plate 40 Inner door side lock Case 41 Dressing seat 42 Outer door 43 Inner door 44 Inner / outer door dust size 45 Inner / outer lock dust size 46 Bar handle 47 Bar claw 51 Wall 52 Outer door 53 Inner door 54 Smoke return 55 Door open / close direction 56 Door open / close direction 57 Locking position 61 Wall 62 Right door 63 Left door 64 Smoke return 65 Smoke return 66 Door opening / closing direction 67 Door opening / closing direction 68 Locking position 71 Wall 72 Door tip door 73 Middle door 74 Door bottom door 75 Smoke return 76 Smoke return 77 Smoke return 78 Door open / close direction 79 Door open / close direction 80 Door open / close direction 81 Locking position 91 Outside Door 92 Inner door 93 Hook plate 94 Claw plate 95 Front plate 96 Cannuki 97 Lock receiving plate 98 Lock receiving hole 99 Hook 100 Claw

Claims (4)

    A sliding door lock used for a sliding door that does not have smoke return, provided with a smoke return hook (14) on the outer door side or the inner door side of the sliding door lock that is attached separately to the outer door and the inner door, A sliding door lock with smoke return with a smoke return claw (9) on the inner door side or outer door side, which prevents the spread of folds between the inner and outer doors, which are key locking elements, and the clearance between the inner and outer doors A sliding door lock that prevents unauthorized unlocking and prevents the door from being removed by lifting the locked door.       Smoke return is provided on the sliding door lock, so that the smoke return prevents the spread of the koji between the inner and outer doors, prevents unauthorized unlocking from the clear space between the inner and outer doors, and prevents the locked door from being lifted. The lock function eliminates the need for that function, and the lock function locks the door, and only the door must be fixed in the direction in which the door slides and opens. The sliding door lock according to claim 1, wherein the lock is locked by protruding into the lock receiving hole (16) of 8) by a simple operation.       With a sliding door lock used for a sliding door with smoke return, remove the smoke return hook (14) and smoke return claw (9) from the lock and give the smoke return function to the smoke return of the door. The function according to claim 2, wherein the function is not required from the lock, and the lock function is performed by locking the kanuki without a sickle to the lock receiving plate by a simple operation when locking the door, and removing the smoke return. Door lock.       A sliding door lock used for sliding doors without smoke return, which separates smoke return hooks and claws from the lock body, and has hook plates (93) with hooks (99) and claws (100). The hook and claw are separated and combined from the lock so that the same crime prevention effect can be obtained by attaching the claw plate (94) to the door without using smoke. The sliding door lock.