JP2945612B2 - Anti-shock lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The anti-seismic lock according to the present invention has been developed to prevent a locking rod, that is, a dead bolt or a latch bolt from projecting and becoming unable to be opened during an earthquake. Things.

[0002]

2. Description of the Related Art The most common type of door lock has a lock box fixed to the door with screws. In such a lock, when the door frame and / or the door is deformed in the event of a large earthquake, the locking rod (dead bolt or latch bolt) in a protruding state is formed.
May be caught on a strike or lock box, and if the locking rod is pulled into the lock box by a thumb turn, a key, or an external operation member, the lock may not be able to be pulled in, and the door cannot be opened. Such a situation is extremely inconvenient and dangerous.

[0003]

The anti-shock lock of the present invention is:
Even if the door frame and / or the door is deformed during an earthquake, the locking rod is engaged with the strike by retracting the locking rod together with the movable lock box into the door immediately before the deformation. It is intended to prevent the situation from being left as it is.

[0004]

According to a first aspect of the present invention, there is provided an anti-seismic lock according to the present invention, wherein a lock box having a locking rod protruding from a front plate is connected to an open end of a door. The lock box is provided so as to be retractable via a guide means with respect to a base frame fixed in the door; the lock box is urged rearward by a retraction spring, and a regulating means provided in the door. At least one protruding piece is provided on the inner peripheral portion of the door frame toward the peripheral portion of the door; and the protruding portion is formed along with the deformation of the emergency door frame in the event of an earthquake. The interlocking mechanism provided in the door which is pushed by one piece and operated is linked to the regulating means, and the restraint of the lock box by the emergency regulating means is released to allow the lock box to retreat.

According to a second aspect of the present invention, in the anti-seismic lock according to the first aspect, the regulating means is normally paired with a stop rod having a locking portion fixed rearward on the lock box side. A pair of clamping pieces pivotally attached to the support frame to engage the distal end with the locking portion of the stop rod, and a closing spring configured to urge the distal ends of the clamping pieces in a direction to normally close, The inner end of the interlocking mechanism is brought into contact with the base end of the holding piece.

According to a third aspect of the present invention, in the anti-seismic lock according to the first or second aspect, the interlocking mechanism is constituted by a single connecting rod slidably provided in a door in a vertical direction. And

Further, the invention of claim 4 is the invention of claim 1 or 2
In the anti-seismic lock, the interlocking mechanism is provided in the door so as to be slidable in the up-down direction, and is operated by a projecting piece provided in a horizontal frame of the door frame, and a horizontal link in the door. A first horizontal connecting rod that is provided slidably in the direction and is operated by a protruding piece provided on a vertical frame of the door frame, and a horizontal shaft that is operated by the first vertical connecting rod or the first horizontal connecting rod. It comprises a cam rotatably provided around, a swing lever operated by the cam, and a second connecting rod provided slidably in the door in the vertical direction and operated by the swing lever. It is characterized by the following.

[0008]

The operation of the anti-shock device of the present invention will be described with reference to the embodiment shown in the drawings. 1, 2, and 4 show a state in which the door 10 is normally closed by being fitted to the door frame 20.

At this time, as shown in FIGS. 1 and 2, the lock box 1 is restrained at a front position by a regulating means 4 against the urging force of the retraction spring 3. Further, specifically, the locking portion 42 of the stop rod 41 fixed to the lock box 1 side is
The lock box 1 is restrained and stopped at the front position by being clamped by the closing springs 45, 45 between the distal ends of the lock boxes 4, 44.

When an earthquake occurs and the side rectangular door frame 20 is deformed to become, for example, a parallelogram, the door frame 2
The protrusion 5 on the door frame 20 presses the outer end of the interlocking mechanism 6 because the gap between the door 0 and the door 10 is reduced. 6 is pushed by the inner end.

Here, the holding pieces 44, 44
The lock portion 1 releases the engagement with the stop rod 41 by swinging and opening the distal end portion against the biasing force of 5 and 45, so that the lock box 1 moves the guide means 2 by the biasing force of the retracting spring 3. To the rear position via the rearward displacement.

Therefore, even if the locking rod 12 is in the protruding state, the locking rod 12 is pulled into the door 10 together with the lock box 1 at the initial stage of the deformation of the door frame 20, so that the strike and the lock are caused. It is possible to prevent the locking rod 12 from being unable to escape from the strike on the door frame 20 due to the deformation of the box or the locking rod itself.

Although not shown, the interlocking mechanism 6 may be a single connecting rod provided between the projecting piece 5 of the door frame 20 and the restricting means 4, and FIGS. As shown in (1), a first vertical connecting rod 61, a first horizontal connecting rod 62, a cam 63, a swing lever 64, and a second connecting rod 65 can be used.

The latter interlocking mechanism 6 is used when at least one actuating projection 5 is provided on each of the horizontal frame and the vertical frame of the door frame 20. The interlocking mechanism 6 further reduces the backward displacement of the lock box 1 during an earthquake. to be certain.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment shown in the drawings. In FIG. 1 to FIG.
0 indicates a door, 20 indicates a door frame, and 30 indicates a hinge. Door 1
The lock box 1 provided in the open-side end of the lock plate 1 is one or two protruding from the front plate 11 as clearly shown in FIG.
It has two locking rods 12, namely dead bolts and / or latch bolts.

The fact that the locking rods 12 are projected or retracted by a thumb turn, a key, or an external operation member is not different from a conventional lock.

The lock box 1 according to the present invention is nested on a box-shaped base frame 13 fixed in the door 10 by mounting screws 91 via a box-shaped movable frame 14. The front plate 11 of the lock box 1 is fixed to the front part of the movable frame 14 with mounting screws 92.

An arbitrary number of guide means 2 are provided between the base frame 13 and the movable frame 14 provided so as to be able to retreat horizontally with respect to the base frame 13. The guide means 2 in the illustrated example comprises a guide rod 21 fixed to the base frame 13 and receiving pieces 22 and 22 fixed to the front and rear of the movable frame 14, but the guide means is not limited to this type.

The lock box 1 is urged rearward with respect to the door 10 through a base frame 13, a movable frame 14, and an arbitrary number of retraction springs 3, and a restriction provided in the door 10. Means 4 normally restricts the retracting spring 3 to a forward position against the urging force of the retracting spring 3.

In the illustrated example, the retraction spring 3 is a compression spring and is mounted between the bottom plate of the movable frame 14 and the front plate of the base frame 13. Reference numeral 31 denotes a mounting rod for mounting the retraction compression spring 3, the front and rear ends of which are fixed to the front plate and the bottom plate of the base frame 13, respectively, and the middle portion movably penetrates the bottom plate of the movable frame 14.

On the other hand, at least one projecting piece 5 is fixed to the inner periphery of the door frame 20 toward the periphery of the door 10 with a set screw 93 or the like, as shown in FIG. The outer end of the interlocking mechanism 6 provided in the door 10 is opposed to the protruding piece 5, and the inner end of the interlocking mechanism 6 is linked to the regulating means 4.

The door 10 for each projection 5 of the door frame 20
It is needless to say that a notch for escape is provided at the corresponding location in the above.

The above-mentioned interlocking mechanism 6 is provided with a door frame 20 when an earthquake occurs.
Is pressed by the protruding piece 5 in conjunction with the deformation of the lock box 1 to operate, thereby releasing the restraint of the lock box 1 to the front position by the restricting means 4,
The lock box 1 is retracted by the retraction spring 3.

The regulating means 4 shown in FIGS. 2 and 3 will be described in more detail as follows. Regulation means 4
A stop rod 41 having a locking portion 42 fixed rearward to a rear portion of the movable frame 14 which can be retracted together with the lock box 1, and a pair of distal ends normally engaged with the locking portion 42 of the stop rod 41. For this purpose, a pair of holding pieces 44, 44 pivotally attached to a box-shaped support frame 43 fixed to the base frame 13 and the like with a horizontal axis, and a torsion for urging the tip ends of the holding pieces 44, 44 in the closing direction. It comprises a spring and other closing springs 45, 45.

The locking portion 42 of the stop rod 41, which is normally held and restrained by the end portions of the holding pieces 44, 44, can be arbitrarily formed by a small diameter portion, an annular groove or a flange portion.

The distal end portions of the pair of holding pieces 44, 44 have only one of their base ends connected to the connecting rod or the second connecting rod 65.
It is preferable that the pin 46 and the long hole 47 are linked so that they can be symmetrically swung even if they are pushed.

The simplest of the above-mentioned interlocking mechanism 6 is as follows.
Although not shown, it is one connecting rod slidably provided in the door 10 in a vertical direction. The outer end of the connecting rod is opposed to the projecting piece 5 provided on the upper frame of the door frame 20, and the inner end is opposed to and linked to the regulating means 4.

The interlocking mechanism 6 in the illustrated example has one regulating means 4.
Are provided symmetrically up and down, so only one provided at the upper position will be described here.

Each of the interlocking mechanisms 6 is configured to release the restraint of the lock box 1 by the restricting means 4 even when a push operation by an earthquake is given from any of the projecting pieces 5 of the upper frame and the vertical frame of the door frame 20. It is.

As clearly shown in FIG. 4, each interlocking mechanism 6
A first vertical connecting rod 61 provided in the door 10 so as to be slidable in the up and down direction and operated when an earthquake occurs by the projecting piece 5 provided on the upper frame of the door frame 20; A first horizontal connecting rod 62 and a first vertical connecting rod 61 which are movably provided and are activated when an earthquake occurs by the projecting piece 5 provided on the vertical frame of the door frame 20;
Or, a cam 63 rotatably provided around the horizontal axis, which is operated by the first horizontal connecting rod 62, a swing lever 64 which is operated clockwise about the horizontal axis by the cam 63, Is provided slidably in the up-down direction.
And a second connecting rod 65 operated by the control unit.

In FIG. 4, reference numeral 66 denotes a guide frame fixed to the door 10 with a set screw 94, and 67 denotes a first vertical connecting rod 6.
1 is a positioning spring mounted in the guide frame 66 for localizing the normal position, and 68 is a mounting box 71 described later on the door frame 10.
Is a positioning spring mounted in the guide frame 68 to localize the normal position of the first horizontal connecting rod 62, and 71 is a mounting in which some members of the interlocking mechanism 6 are mounted. A box 72 is an intermediate slider provided for ensuring the link between the first vertical link 61 and the cam 63, and a 73 is a middle slider for ensuring the link between the second horizontal link 62 and the cam 63. The intermediate slider 74 is provided with a torsion spring 74 for positioning the cam 63 in the normal position. The swing lever 75 is provided for simplifying the mounting of the second connecting rod 65 to the swing lever 64. A mounting device attached to the reference numeral 64 indicates a positioning spring mounted around the second connecting rod 65 for localizing the position of the swing lever 64 in a normal state.

The intermediate sliders 72 and 73 are slidably guided in the vertical and horizontal directions by guide members (not shown) in the mounting box 71, respectively.
3 are engaged with each other by a pin and a long hole.

In the anti-seismic lock of the present invention, since the lock box 1 is movable (retractable) in the horizontal direction, the handle of the handle or other external operation member, or the thumb-turn shaft or the like is moved backward with respect to the door 10. Escape slots for allowance naturally require them.

In the anti-shock lock according to the present invention, the amount of deformation of the door frame due to the earthquake is determined by the interlayer displacement angle defined by the Building Standards Law, that is, the horizontal direction of the horizontal frame of the door frame when the door is viewed from the front. When the displacement amount is expressed by the value obtained by dividing the length of the vertical frame (in radians), the radian at which the interlayer displacement angle starts to operate varies depending on the size of each component.

However, if an example of the performance of the anti-shock lock is shown, if the gap between the door and the door frame, that is, so-called dust, is set to a normal value, the lock is operated at an interlayer displacement angle of 1/225 radians. On the other hand, when the interlayer displacement angle is up to 1/150 radian, the lock box moved by the earthquake can be returned to the original position.

[0036]

According to the anti-seismic lock of the present invention described above, even if the door frame or the door is slightly deformed in the state where the door is closed in the event of an earthquake, the locking rod is caught on the strike or the lock box. Since it is not possible to displace, there is no possibility that the door cannot be opened, and this is extremely effective in improving safety. .

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an outline of an embodiment of an anti-shock lock according to the present invention.

FIG. 2 is an enlarged vertical cross-sectional side view showing a lock box part and a regulating means part which are main parts thereof.

FIG. 3 is an enlarged perspective view of a restricting unit shown with a support frame removed.

FIG. 4 is an enlarged vertical sectional side view showing a projecting piece on a door frame and an interlocking mechanism, which are main parts in the embodiment of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Door 20 Door frame 30 Hinge 1 Lock box 11 Front plate 12 Locking rod 13 Base frame 14 Movable frame 2 Guide means 21 Guide rod 22 Receiving piece 3 Retraction spring 31 Mounting rod 4 Restriction means 41 Stop rod 42 Locking part 43 Support Frame 44 Holding piece 45 Closing spring 46 Pin 47 Elongated hole 5 Projection piece 6 Interlocking mechanism 61 First vertical link 62 First horizontal link 63 Cam 64 Swing lever 65 Second link 66 Guide frame 67 Positioning spring 68 Guide frame 69 positioning spring 71 mounting box 72 intermediate slider 73 intermediate slider 74 torsion spring 75 mounting device 76 positioning spring 91 mounting screw 92 mounting screw 93 set screw 94 set screw

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E06B 5/00 E05B 9/08

Claims (4)

(57) [Claims] 1. A lock box having a locking rod protruding from a front plate is provided in an open end of a door; the lock box can be retracted via a guide means to a base frame fixed in the door. The lock box is urged rearward by a retraction spring and restrained at a normal forward position by a regulating means provided in the door; at least one protruding piece is provided on the inner peripheral portion of the door frame. Projecting toward the periphery of the door; and interlocking mechanisms provided in the doors that are pushed and actuated by the protruding pieces in conjunction with deformation of the emergency door frame in the event of an earthquake are linked to the control means to control the emergency. An anti-seismic lock having a condition that the lock box is released from the means and the lock box is allowed to retreat. 2. A stop rod having a locking portion fixed rearward to the lock box side, and a restricting means for supporting a pair of distal end portions to engage with the locking portion of the stop rod. It is composed of a pair of holding pieces pivotally attached to the frame, and a closing spring that urges the distal ends of the holding pieces in a direction to normally close, and abuts the inner end of the interlocking mechanism to the base end side of the holding piece. The anti-seismic lock according to claim 1, wherein the anti-shock lock is provided. 3. The anti-seismic lock according to claim 1, wherein the interlocking mechanism is constituted by one connecting rod provided to be slidable in a vertical direction in the door. 4. A first vertical connecting rod provided in the door so as to be slidable in a vertical direction in the door, and operated by a projecting piece provided in a horizontal frame of the door frame, and a horizontal direction in the door. And a first horizontal connecting rod operated by a projecting piece provided on a vertical frame of the door frame, and around a horizontal axis operated by the first vertical connecting rod or the first horizontal connecting rod. , A swing lever operated by the cam, and a second connecting rod slidably provided in the door in a vertical direction and operated by the swing lever. The anti-shock tablet according to claim 1 or 2, wherein: