JPH0967963A - Aseismatic lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a detaining rod from being left in a condition as engaged by a strike even if a door frame or a door is deformed in the event of earthquake and enhance the efficiency in the mounting works for an antiseismatic lock and also the mounting accuracy. SOLUTION: A lock box is installed with possibility of retreating through a guide means inside a door 10, is energized backward, and restrained by a restricting means to the ahead position at normal times. A projection 5 is provided on the inside surface of a door frame 20. An interlocking mechanism 6 actuated when pressed by this projection 5 at earthquake is put in linkage with the restricting means, and the lock box restrained by an at-emergency restricting means is disengaged. The interlocking mechanism 6 is composed of the first vertical interlock rod 61 or first crosswise interlock rod 62, a cam 63, swing lever 64, and the second interlock rod 65. An inner interlock rod 65a and outer interlock rod 65b to constitute the second interlock rod 65 are coupled together by a screw-fit means 65c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The anti-vibration lock of the present invention has been developed in order to prevent a locking rod, that is, a dead bolt or a latch bolt from protruding and being unable to open a door during an earthquake. It is a thing.

[0002]

The most common type of door lock is a lock box fixed to the door with screws. With 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) is in a protruding state.
May be caught by the strike or the lock box, and even if the locking rod is tried to be drawn into the lock box by the thumb turn, the key, or the external operation member, it cannot be pulled in, and the door cannot be opened. Such a situation is extremely inconvenient and dangerous.

[0003]

The anti-vibration lock of the present invention comprises:
Even if the door frame and / or the door is deformed when an earthquake occurs, just before the deformation, the locking rod is retracted into the door together with the movable lock box, so that the locking rod engages the strike. It is designed to prevent the situation of being kept as it is.

Another object of the present invention is to make it possible to freely adjust the length of the second connecting rod, which is a part of the interlocking mechanism of the present invention, to improve the efficiency of the mounting work and improve the mounting accuracy. It is to plan.

[0005]

In order to achieve the above object, the anti-vibration lock of the present invention comprises a lock box having a locking rod projectingly inserted from a front plate in an open side end of a door;
The lock box should be installed so that it can be retracted to the base frame fixed in the door through the guide means; the lock box is biased rearward by the retracting spring, and is normally in the forward position by the restricting means provided in the door. At least 1 on the inner circumference of the door frame
Projecting two projecting pieces toward the periphery of the door; linking the interlocking mechanism provided in the door, which is pushed by the projecting pieces with the deformation of the door frame in the event of an earthquake occurrence, with the restricting means, To release the restraint of the lock box by the emergency control means and allow the lock box to retract; the interlocking mechanism is provided in the door so as to be slidable in the vertical direction, and is a protrusion provided on the horizontal frame of the door frame. A first vertical connecting rod which is operated by a piece, or a first horizontal connecting rod which is provided slidably in the door in a horizontal direction and is operated by a protrusion provided on a vertical frame of the door frame; A cam that is operated by the vertical connecting rod or the first horizontal connecting rod and is rotatable around a horizontal axis; a swing lever that is operated by the cam; and a vertically slidable door provided in the door. A second connecting rod operated by the swing lever; the second connecting rod is internally connected in the longitudinal direction. And the outer connecting rod, and the inner connecting rod and the outer connecting rod are connected by screwing means so that the length can be adjusted; the inner connecting rod is slidable in the vertical direction but rotatable. The constitutional condition is that it has an immovable detent; and that the outer end of the outer connecting rod is provided with an engaging portion for tools.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on one embodiment shown in the drawings. 1 to 4, reference numeral 10 indicates a door, 20 indicates a door frame, and 30 indicates a hinge. The lock box 1 provided in the open end of the door 10 has one or two locking rods 12, that is, dead bolts and / or latch bolts protruding from the front plate 11, as clearly shown in FIG. Have.

The locking rod 12 is projected or retracted by a thumb turn, a key or an external operating member, which is the same as a conventional lock.

The lock box 1 according to the present invention is nested in 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 a mounting screw 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 retractable in the horizontal direction. The guide means 2 in the illustrated example includes 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 biased rearward with respect to the door 10 through the base frame 13, the movable frame 14 and an arbitrary number of retracting springs 3, and a regulation provided in the door 10. The means 4 normally restrains the retracting spring 3 in the forward position against the biasing force of the retracting spring 3.

In the illustrated example, the retracting 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 is a mounting rod for mounting and guiding the retracting 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 is movable frame 14
The bottom plate of the is movably penetrated.

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

The door 10 for each protrusion 5 of the door frame 20
It goes without saying that a notch for escape is provided at the corresponding position in.

The interlocking mechanism 6 is provided with a door frame 20 when an earthquake occurs.
When the lock box 1 is pushed by the projecting piece 5 to operate, the lock box 1 is released from being restrained to the front position by the restricting means 4, and thus,
The lock box 1 is retracted by the retracting spring 3.

The regulating means 4 shown in FIGS. 2 and 3 will be described in more detail as follows. The regulation means 4 is
A stop rod 41 having a locking portion 42 fixed to the rear at the rear of the movable frame 14 that can be retracted together with the lock box 1, and a front end that normally forms a pair are 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 along the horizontal axis, and a twist for biasing the tip end portions of the holding pieces 44, 44 in the direction of closing It is composed of a spring and other closing springs 45, 45.

The engaging portion 42 of the stop rod 41, which is normally sandwiched and constrained by the tips of the sandwiching pieces 44, 44, can be arbitrarily formed by a small diameter portion, an annular groove or a flange portion.

Further, the tip ends of the pair of holding pieces 44, 44 are long with the pin 46 so that they can swing symmetrically even if only one of the base ends thereof is pushed by the second connecting rod 65. It is advisable to link with the hole 47.

The interlocking mechanism 6 in the illustrated example is one regulating means 4.
Since they are provided symmetrically in the vertical direction, only one provided in the upper position will be described here.

Each interlocking mechanism 6 enables the restraint means 4 to release the lock of the lock box 1 regardless of whether the projecting piece 5 of the upper frame or the vertical frame of the door frame 20 is given a pushing motion due to an earthquake. There is.

As clearly shown in FIG. 4, each interlocking mechanism 6 is
A first vertical connecting rod 61, which is provided slidably in the vertical direction in the door 10 and is activated in the event of an earthquake by a projecting piece 5 provided on the upper frame of the door frame 20, and slides horizontally in the door 10. A first horizontal connecting rod 62 and a first vertical connecting rod 61, which are movably provided and are operated at the time of an earthquake by the projecting piece 5 provided on the vertical frame of the door frame 20.
Alternatively, a cam 63 that is actuated by the first horizontal connecting rod 62 and that is rotatable about the horizontal axis, a swing lever 64 that is actuated clockwise by the cam 63 about the horizontal axis, and the inside of the door 10 Is provided so as to be vertically slidable on the
And a second connecting rod 65 that is operated by the swing lever 64 via the.

In FIG. 4, reference numeral 66 is a guide frame fixed to the door 10 with a set screw 94, and 67 is the first vertical connecting rod 6.
1 is a positioning spring mounted in the guide frame 66 for locating the normal position of 1, and 68 is a mounting box 71 to be described later on the door frame 10.
A guide frame fixed via the guide frame 69, a positioning spring 69 mounted in the guide frame 68 for orienting the normal position of the first horizontal connecting rod 62, 71 a part of the interlocking mechanism 6 mounted A box, 72 is an intermediate slider provided for ensuring the connection between the first vertical connecting rod 61 and the cam 63, and 73 is for ensuring the connection between the first horizontal connecting rod 62 and the cam 63. An intermediate slider 74, a torsion spring 74 for locating the normal position of the cam 63, and a swing lever 75 for easily attaching the second connecting rod 65 to the swing lever 64. Reference numeral 76 denotes a mounting device attached to 64, and 76 denotes a positioning spring mounted around the second connecting rod 65 for positioning the swing lever 64 in the normal position.

The intermediate sliders 72 and 73 are adapted to be slidably guided in the vertical and horizontal directions by a suitable guide member including a pin or a projecting piece in the mounting box 71 and an elongated hole, and a cam. 63 are engaged with each other by a pin and an elongated hole.

The attachment device 75 has a pair of scissors-like sandwiching pieces 75a, 75a pivotally attached to the upper surface of the swing lever 64 on the vertical axis, and a base end (right end in FIG. 4) in a direction to be closed. A torsion spring 75b for urging is screwed onto the rocking lever 64, and the expanding shaft 75c having an engaging portion for tools such as a screwdriver at the upper end and the proximal end side of the sandwiching pieces 75a, 75a are pressed to rock. It comprises a pressing piece 75d fixed to the moving lever 64.

The pair of sandwiching pieces 75a, 75a are shown in FIG.
As shown in FIG. 5, it is configured so as to symmetrically open up and down with respect to the joining line SL, and is normally closed by the elasticity of the torsion spring 75b as shown in FIG. When the expanding shaft 75c is rotated by 90 degrees, for example, the pair of sandwiching pieces 75a and 75a expand in the directions in which the right ends thereof are separated from each other in FIG.

Therefore, when the second connecting rod 65, which will be described in detail later, is assembled to the swing lever 64, the expanding shaft 75c is rotated by a screwdriver so that the sandwiching pieces 75a, 7 are closed.
5a is spread out, and then the second connecting rod 65 is inserted into the corresponding vertical hole of the swing lever 64. After inserting the second connecting rod 65 to the predetermined position, the expanding shaft 75c is of course turned in the opposite direction and returned to the original position.

The swing lever 64 and the outer connecting rod 65b of the second connecting rod 65 are engaged with each other via the sandwiching pieces 75a, 75a of the mounting device 75 at the small diameter portion of the outer connecting rod 65b. .

Next, the second connecting rod 65 will be described in more detail. As shown in FIG. 4, the second connecting rod 65 includes an inner connecting rod 65a and an outer connecting rod 65 which are divided into two in the length direction.
The inner and outer connecting rods 65a and 65b are connected by screwing means 65c so that their entire length can be adjusted.

In other words, the inner and outer connecting rods 65a and 65b are screwed together. In the illustrated example, a male screw is cut at the lower end of the outer connecting rod 65b and a female screw is cut at the upper end of the inner connecting rod 65a, but it goes without saying that these male screw and female screw may be provided in reverse to each other.

What is important here is that the inner connecting rod 65a is slidable in the vertical direction (longitudinal direction), but is not rotatable about the axis.

In the illustrated example, a cross section of a part of the inner connecting rod 65a is formed into an oval or other non-circular shape, and the non-circular portion 65 thereof is formed.
By inserting d into the hole 65e of the same shape of the mounting box 71, a detent is formed.

As another detent for the inner connecting rod 65a, although not shown, a projecting piece is formed on the inner connecting rod 65a so that it is always in contact with a fixing member such as the mounting box 71. May be.

On the other hand, an engaging portion 65f for tools such as a driver is provided at the outer end of the outer connecting rod 65b. For example, a driver or the like may be inserted into the engaging portion 65f from the outside of the door through the opening 40 provided on the upper side of the door 10.

Incidentally, the inner connecting rod 65a and the outer connecting rod 65b described above.
Each does not need to be made of one rod.
For example, two rods may be integrally connected by a pin 95, as in the outer connecting rod 65b clearly shown in FIG.

In the anti-vibration lock of the present invention, since the lock box 1 is horizontally movable (retractable), the door 10 is retracted from the shaft of the handle or other external operating member or the thumb turn shaft. Escape slots to allow them naturally require them.

The operation of the anti-vibration lock having the above-described structure will be described. FIGS. 1, 2, and 4 all show a state in which the normal door 10 is fitted in the door frame 20 and closed.

At this time, as shown in FIGS. 1 and 2, the lock box 1 is restrained in the forward position by the restricting means 4 against the biasing force of the retracting spring 3. Further, specifically, the locking portion 42 of the stop rod 41 fixed to the lock box 1 side is provided with the pair of holding pieces 4.
The lock box 1 is restrained and stopped at the front position by holding the closing springs 45, 45 at the tips of the lock boxes 4, 44.

When an earthquake occurs and the side-side rectangular door frame 20 is deformed to form a parallelogram, for example, the door frame 2
The gap between 0 and the door 10 is reduced so that the projection piece 5 on the door frame 20 has the first vertical connecting rod 61 or the first horizontal connecting rod 62 in the interlocking mechanism 6.
Since the outer end of the holding member is pressed, the pair of holding pieces 44 of the restricting means 4 is provided through the cam 63, the swing lever 64, the holding pieces 75a and 75a of the mounting device 75, and the second connecting rod 65.
The proximal side of 44 is pushed.

Here, the clamping pieces 44, 44 are the closing springs 4.
Since the tip end is rocked and released against the urging force of the lock levers 5 and 45, and the engagement with the stop rod 41 is released, the lock box 1 is guided by the urging force of the retracting spring 3 through the guide means 2. Move backward to the rear position.

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 a strike or lock is generated. It is possible to prevent the locking rod 12 from being stuck in the strike on the door frame 20 due to the deformation of the box or the locking rod itself.

When the anti-vibration lock according to the present invention is assembled to the door 10, in order to make the second connecting rod 65 have an optimum length, that is, for example, the second connecting rod 65 is restricted by the regulating means 4.
In order to bring the clamping pieces 44, 44 into contact with the base end side, the tool engaging portion 65 of the outer connecting rod 65b of the second connecting rod 65 is attached.
By locking a driver or the like to f and turning it clockwise or counterclockwise, the total length of the second connecting rod 65 changes depending on the screwing means 65c between the inner connecting rod 65a and the outer connecting rod 65b. Therefore, the adjustment work can be performed extremely easily.

The anti-vibration lock according to the present invention is characterized in that the amount of deformation of the door frame due to an earthquake is determined by the interlayer displacement angle defined by the Building Standards Law, that is, when the door is viewed from the front, the horizontal direction of the horizontal frame of the door frame. When the displacement amount is expressed by the length of the vertical frame (radian), it goes without saying that the radian of the interlayer displacement angle at which the operation starts varies variously depending on the setting of the size of each component.

Given the general performance example of this anti-vibration lock, however, when the gap between the door and the door frame, so-called dust, is set to a normal value, it operates at an interlayer displacement angle of 1/225 radian. On the other hand, at the interlayer displacement angle up to 1/150 radian, it is possible to return the lock box moved by the earthquake to the original position.

[0043]

According to the anti-vibration lock of the present invention described above, even if the door frame or the door is slightly deformed in the closed state in the event of an earthquake, the locking rod is caught on the strike or the lock box. Since it cannot be displaced, the door cannot be opened, which is extremely effective in improving safety. .

Further, since the length of the second connecting rod in the interlocking mechanism can be freely and easily adjusted, it is extremely effective for improving the efficiency of the mounting work and improving the mounting accuracy.

[Brief description of drawings]

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

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

FIG. 3 is an enlarged perspective view of the regulating means with the support frame removed.

FIG. 4 is an enlarged vertical cross-sectional side view showing a protruding piece and an interlocking mechanism portion on a door frame which are main parts in the embodiment of FIG.

FIG. 5 is an enlarged plan view of a swing lever.

[Explanation of symbols]

 10 Door 20 Door Frame 30 Hinge 1 Lock Box 11 Front Plate 12 Locking Rod 13 Base Frame 2 Guide Means 3 Retracting Spring 4 Regulation Means 41 Stopping Rod 42 Locking Part 43 Support Frame 44 Clamping Piece 45 Closing Spring 5 Projecting Piece 6 Interlocking Mechanism 61 first vertical connecting rod 62 first horizontal connecting rod 63 cam 64 swing lever 65 second connecting rod 65a inner connecting rod 65b outer connecting rod 65c screwing means 65f engaging portion

Claims (2)

[Claims] 1. A lock box having a locking rod projectingly inserted from a front plate is provided in an open side end of the door; the lock box is retractable with respect to a base frame fixed in the door through a guide means. The lock box is biased rearward by the retracting spring and is normally restrained to the front position by the restricting means provided in the door; at least one protrusion is provided on the inner peripheral portion of the door frame. Projecting toward the peripheral part of the door; the interlocking mechanism provided in the door that is pushed by the projecting piece and operates when the emergency door frame is deformed in the event of an earthquake To release the lock of the lock box and allow the lock box to move backward; the interlocking mechanism is provided in the door so as to be slidable in the vertical direction, and is operated by a protrusion provided on the horizontal frame of the door frame. 1st vertical connecting rod or horizontally slidable inside the door and installed on the vertical frame of the door frame A first horizontal connecting rod that is operated by the protruding piece, and a cam that is provided by the first vertical connecting rod or the first horizontal connecting rod and is rotatable around a horizontal axis; and that is operated by the cam. A swing lever that is slidable vertically in the door and is operated by the swing lever.
The second connecting rod is divided into an inner connecting rod and an outer connecting rod in the lengthwise direction, and the inner connecting rod and the outer connecting rod are screwed with each other so that their lengths can be adjusted. Be connected;
The inner connecting rod has a detent that is slidable in the vertical direction but is not rotatable; and a pair provided with an engaging portion for tools on the outer end of the outer connecting rod. Quake. 2. The regulating means is supported to engage a stop rod having a locking portion fixed rearward on the lock box side, and a front end portion that normally forms a pair with the locking portion of the stop rod. A pair of holding pieces pivotally attached to the frame, and a closing spring for urging the tip ends of the holding pieces in a direction to normally close the holding pieces. The inner end of the inner connecting rod in the second connecting rod is held by the holding piece. The anti-vibration lock according to claim 1, wherein the anti-vibration lock is brought into contact with the base end side of the.