JP3593189B2 - Anti-shock lock - Google Patents

Description

[0001]
[Industrial applications]
The anti-seismic lock according to the present invention has been developed in order to prevent a locking rod, that is, a dead bolt or a latch bolt from being left protruding and preventing the door from being opened during an earthquake.
[0002]
[Prior art]
The most common type of door lock has a lock box secured 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 protruding locking rod (dead bolt or latch bolt) is hooked on the strike or lock box, and the locking rod is turned into a thumb-turn, Attempts to pull the lock into the lock box by a key or an external operation member may not be possible, and the door cannot be opened. Such a situation is extremely inconvenient and dangerous.
[0003]
[Problems to be solved by the invention]
The anti-seismic lock according to the present invention is configured such that, even if the door frame and / or the door is deformed during the occurrence of an earthquake, immediately before the deformation, the locking rod is retracted into the door together with the movable lock box. The locking rod can be prevented from being kept engaged in the strike.
[0004]
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. is there.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the anti-seismic lock according to the present invention includes a lock box having a locking rod protruding from a front plate in an open end of the door; the lock box is fixed in the door. The lock box is provided so as to be able to retreat to the base frame via guide means; the lock box is urged rearward by a retraction spring, and is restrained at a normal front position by a regulating means provided in the door; Projecting at least one projecting piece on the periphery toward the periphery of the door; interlocking mechanism provided in the door which is pushed by the projecting piece and operated when the emergency door frame is deformed in the event of an earthquake. Releasing the lock of the lock box by the emergency control means and allowing the lock box to retreat; linking the interlocking mechanism in the door so as to be vertically slidable, The first vertical link actuated by the projection provided on the frame, or horizontally inside the door A first horizontal connecting rod movably provided and operated by a protruding piece provided on a vertical frame of the door frame; and a first horizontal connecting rod or a first horizontal connecting rod for rotating around a horizontal axis. A cam provided movably, a swing lever operated by the cam, and a second connecting rod provided slidably in the door in a vertical direction and operated by the swing lever; The second connecting rod is divided into an inner connecting rod and an outer connecting rod in the longitudinal direction, and the inner connecting rod and the outer connecting rod are connected by screwing means so that the length can be adjusted; Has a detent that is slidable in the vertical direction but is not rotatable; and that an outer end of the outer connecting rod is provided with an engaging portion for tools and the like.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on one embodiment shown in the drawings.
1 to 4, reference numeral 10 denotes a door, 20 denotes a door frame, and 30 denotes a hinge.
As shown in FIG. 2, the lock box 1 provided in the open end of the door 10 includes one or two locking rods 12 protruding from the front plate 11, that is, a dead bolt and / or a latch bolt. Have.
[0007]
It is no different from a conventional lock that the locking rods 12 are projected or immersed by a thumb turn, a key or an external operation member.
[0008]
The lock box 1 according to the present invention is nested on a box-shaped base frame 13 fixed in a door 10 with 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.
[0009]
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 in the horizontal direction with respect to the base frame 13. 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.
[0010]
The lock box 1 is urged rearward with respect to the door 10 via a base frame 13, a movable frame 14, and an arbitrary number of retraction springs 3, and is regulated by a regulating means 4 provided in the door 10. In normal times, it is restrained at a forward position against the urging force of the retraction spring 3.
[0011]
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 and guiding 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. .
[0012]
On the other hand, as shown in FIG. 4, at least one protruding piece 5 is fixed to the inner peripheral portion of the door frame 20 toward 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 protruding piece 5, and the inner end of the interlocking mechanism 6 is linked to the regulating means 4.
[0013]
It goes without saying that a notch for escape is provided at a position corresponding to each projection 5 of the door frame 20 in the door 10.
[0014]
The interlocking mechanism 6 is operated by being pushed by the protruding piece 5 in accordance with the deformation of the door frame 20 at the time of the occurrence of an earthquake, thereby releasing the restraint of the lock box 1 to the forward position by the restricting means 4, and thereby the retraction spring 3. To retract the lock box 1.
[0015]
The regulating means 4 shown in FIGS. 2 and 3 will be described in more detail as follows.
The restricting means 4 includes a stop rod 41 having a locking portion 42 fixed rearward at a rear portion of the movable frame 14 which can be retracted together with the lock box 1, and a locking portion of the stop rod 41 which forms a pair in a normal state. A pair of holding pieces 44, 44 pivotally mounted on a box-shaped support frame 43 fixed to the base frame 13 and the like to engage with the base frame 13, and a direction for closing the distal ends of the holding pieces 44, 44. And a torsion spring and other closing springs 45 for urging the springs.
[0016]
The locking portion 42 of the stop rod 41, which is normally held and restrained by the tip portions of the holding pieces 44, 44, can be arbitrarily formed of a small diameter portion, an annular groove, a flange portion, or the like.
[0017]
Further, the distal ends of the pair of holding pieces 44, 44 are provided with a pin 46 and an elongated hole 47 so that they can swing symmetrically even if only one of their base ends is pushed by the second connecting rod 65. It is good to link with.
[0018]
Since the interlocking mechanism 6 in the illustrated example is provided vertically symmetrically with respect to one regulating means 4, only one provided at the upper position will be described here.
[0019]
Each of the interlocking mechanisms 6 is configured to release the lock of the lock box 1 by the restricting means 4 even if a push operation due to an earthquake is given from any of the projections 5 of the upper frame and the vertical frame of the door frame 20.
[0020]
As shown in FIG. 4, each interlocking mechanism 6 is provided in the door 10 so as to be slidable in the up-down direction, and is activated by a projection 5 provided on the upper frame of the door frame 20 when an earthquake occurs. A vertical connecting rod 61, a first horizontal connecting rod 62 slidably provided in the door 10 in a horizontal direction, and operated by a projection 5 provided on the vertical frame of the door frame 20 when an earthquake occurs; A cam 63 rotatably provided around a horizontal axis, which is operated by the vertical connecting rod 61 or the first horizontal connecting rod 62, and a swing lever 64 which is operated clockwise about the horizontal axis by the cam 63; And a second connecting rod 65 slidably provided in the door 10 in the up-down direction and operated by the swing lever 64 via the mounting device 75 described above.
[0021]
In FIG. 4, reference numeral 66 denotes a guide frame fixed to the door 10 with a set screw 94, 67 denotes a positioning spring mounted in the guide frame 66 to position the first vertical link 61 in a normal state, and 68. Is a guide frame fixed to the door frame 10 via a mounting box 71 described later, 69 is a positioning spring mounted in the guide frame 68 for localizing the position of the first horizontal link 62 in the normal state, and 71 is an interlocking mechanism. 6 is a mounting box in which some members are mounted, 72 is an intermediate slider provided to ensure the link between the first vertical connecting rod 61 and the cam 63, and 73 is a first horizontal connecting rod 62 and the cam 63. An intermediate slider 74 provided for ensuring the linkage between the cam and the cam 63 is a torsion spring provided for positioning the cam 63 at a normal position, and 75 is an attachment of the second connecting rod 65 to the swing lever 64. Mounting attached to the swing lever 64 to simplify the Location, 76 denotes a positioning spring mounted around the second communication rod 65 for localizing the position of the normal state of the swing lever 64, respectively.
[0022]
The intermediate sliders 72 and 73 are slidably guided in the vertical and horizontal directions by a suitable guide member including a pin or a protruding piece and a long hole in the mounting box 71, respectively. Each is engaged by a pin and a slot.
[0023]
Further, the mounting device 75 biases the pair of scissors-like sandwiching pieces 75a, 75a pivotally mounted on the upper surface of the swing lever 64 on the vertical axis in a direction to close the base end (right end in FIG. 4). A torsion spring 75b is screwed to the swing lever 64, and an expanding shaft 75c having an engaging portion for tools such as a screwdriver at the upper end, and a swing lever 64 for pressing the base ends of the sandwiching pieces 75a, 75a. And a pressing piece 75d fixed to
[0024]
As shown in FIG. 5, the pair of sandwiching pieces 75a and 75a are configured to expand symmetrically up and down with respect to the joining line SL, and usually by the elastic force of the torsion spring 75b as shown in FIG. Although the legs are closed, when the expansion shaft 75c having a substantially rectangular cross section rotates, for example, 90 degrees, the pair of sandwiching pieces 75a, 75a expand in the direction in which the right ends are separated from each other in FIG.
[0025]
Therefore, when assembling the second connecting rod 65, which will be described in detail later, to the swing lever 64, the sandwiching pieces 75a, 75a in the closed state are pushed out by turning the expanding shaft 75c with a screwdriver, and then the second The connecting rod 65 is inserted into a corresponding vertical hole of the swing lever 64. After the second connecting rod 65 is inserted to a predetermined position, the expanding shaft 75c is, of course, turned in the opposite direction to return to the original position.
[0026]
In addition, between the swing lever 64 and the outer connecting rod 65b of the second connecting rod 65, the small diameter portion of the outer connecting rod 65b is engaged via the holding pieces 75a, 75a of the mounting device 75.
[0027]
Next, the second connecting rod 65 will be described in more detail. As shown in FIG. 4, the second connecting rod 65 is composed of an inner connecting rod 65a and an outer connecting rod 65b divided into two in the length direction, and the total length of the inner and outer connecting rods 65a and 65b can be adjusted. As described above.
[0028]
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. However, it goes without saying that the male screw and the female screw may be provided in reverse.
[0029]
What is important here is that the inner connecting rod 65a is slidable in the vertical direction (length direction), but is not rotatable around the axis.
[0030]
In the illustrated example, the cross-section of a part of the inner connecting rod 65a is formed in an oval or other non-circular shape, and the non-circular portion 65d is inserted into the same hole 65e of the mounting box 71 to form a detent. I have.
[0031]
As another detent of the inner connecting rod 65a, although not shown, a protruding piece may be formed on the inner connecting rod 65a, and this may be kept in contact with a fixing member such as the mounting box 71 at all times. .
[0032]
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. It is preferable that a driver or the like can be inserted into the engagement portion 65f from the outside of the door through an opening 40 provided on the upper side of the door 10, for example.
[0033]
The inner connecting rod 65a and the outer connecting rod 65b do not need to be made of one rod. For example, two rods may be integrally connected by a pin 95 like an external connecting rod 65b shown in FIG.
[0034]
In the anti-seismic lock of the present invention, since the lock box 1 is movable (retractable) in the horizontal direction, the lock box 1 allows the door 10 to retreat, such as a handle, a shaft of an external operation member, or a thumb-turn shaft. Escape slots of course need them.
[0035]
The operation of the anti-seismic lock having the above configuration will be described. FIGS. 1, 2 and 4 show a state in which the door 10 is normally fitted to the door frame 20 and closed.
[0036]
At this time, as shown in FIGS. 1 and 2, the lock box 1 is restrained at a front position by the regulating means 4 against the urging force of the retraction spring 3. More specifically, the locking box 42 is fixed to the lock box 1 side by holding the locking portion 42 of the stop rod 41 with the closing springs 45, 45 at the distal ends of the pair of holding pieces 44, 44, so that the lock box 1 is held. It is restrained and stopped at the front position.
[0037]
When an earthquake occurs and the side rectangular door frame 20 is deformed to become, for example, a parallelogram, the gap between the door frame 20 and the door 10 is reduced, and the protruding piece 5 on the door frame 20 is linked. 6, the outer end of the first vertical connecting rod 61 or the first horizontal connecting rod 62 is pressed, so that the cam 63, the swing lever 64, the holding pieces 75 a, 75 a of the mounting device 75 and the second connecting rod 65 The proximal ends of the pair of holding pieces 44 in the regulating means 4 are pressed.
[0038]
Here, since the holding pieces 44, 44 pivotally open the distal end portion against the urging force of the closing springs 45, 45 and release the engagement with the stop rod 41, the lock box 1 is retracted. Due to the urging force of the spring 3, the spring 3 is displaced backward through the guide means 2 to the rear position.
[0039]
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, and the strike, the lock box, or the lock It is possible to prevent the locking rod 12 from getting out of the strike on the door frame 20 due to the deformation of the locking rod itself.
[0040]
Further, when assembling the anti-seismic lock according to the present invention to the door 10, in order to make the second connecting rod 65 an optimum length, for example, the second connecting rod 65 is connected to the holding piece 44 of the regulating means 4. , 44, the driver or the like is engaged with the engaging portion 65f of the tools of the outer connecting rod 65b of the second connecting rod 65, and the driver is turned clockwise or counterclockwise. For example, the length of the second connecting rod 65 changes by the screwing means 65c between the inner connecting rod 65a and the outer connecting rod 65b, so that the adjusting operation can be performed extremely easily.
[0041]
The anti-quake lock according to the present invention measures the amount of deformation of the door frame due to the earthquake by the interlayer displacement angle defined by the Building Standards Law, that is, the horizontal displacement of the horizontal frame of the door frame when the door is viewed from the front. In the case of dividing by the length of the vertical frame (radian), it is needless to say that the radian at which the interlayer displacement angle starts to operate varies variously depending on the size of each component.
[0042]
However, if an example of the performance of the anti-seismic lock is shown, when the gap between the door and the door frame, so-called dust, is set to a normal value, the lock can be operated at an interlayer displacement angle of 1/225 radians. With an interlayer displacement angle of up to 1/150 radians, the lock box moved by the earthquake can be returned to the original position.
[0043]
【The invention's effect】
According to the anti-seismic lock of the present invention described above, even if the door frame or the door is slightly deformed in a state where the door is closed in the event of an earthquake, the locking rod is caught on the strike or the lock box and cannot be displaced. Since there is no door, there is no possibility that the door cannot be opened, which is extremely effective in enhancing safety. .
[0044]
In addition, 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 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 sectional side view showing a lock box portion and a restricting portion, which are main portions thereof.
FIG. 3 is an enlarged perspective view of the regulating means with the 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;
FIG. 5 is an enlarged plan view of a swing lever.
[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 2 Guide means 3 Retraction spring 4 Restriction means 41 Stop rod 42 Locking part 43 Supporting frame 44 Nipping piece 45 Closing spring 5 Protrusion 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 Engagement part

Claims (2)

A lock box having a locking rod protruding from the front plate is provided in the open end of the door; the lock box is provided so as to be retractable via a guide means to a base frame fixed in the door; The box is urged rearward by a retraction spring and restrained in a normal forward position by a regulating means provided in the door; at least one protrusion on the inner periphery of the door frame is directed toward the periphery of the door. Projecting; linking an interlocking mechanism provided in the door which is pushed and operated by the protruding piece with the deformation of the emergency door frame in the event of an earthquake to the restricting means, and restricting the lock box by the emergency restricting means; Releasing the lock box to allow retreat; a first vertical connecting rod provided with the interlocking mechanism so as to be vertically slidable in the door and operated by a projecting piece provided on a horizontal frame of the door frame. Or a protruding piece provided in a door frame so as to be slidable in the horizontal direction and provided on a vertical frame of the door frame. A first horizontal connecting rod operated by the first vertical connecting rod or a first horizontal connecting rod, a cam rotatably provided around a horizontal axis, and a swing lever operated by the cam. A second connecting rod provided in the door so as to be slidable in the up-down direction and operated by the swing lever; the second connecting rod includes an inner connecting rod and an outer connecting rod in a length direction. 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 has a non-rotatable non-rotatable non-rotatable An anti-seismic lock having a condition that an engaging portion for tools is provided at an outer end of the outer connecting rod. A stop rod having a locking portion fixed rearward on the lock box side, and a tip that forms a normal pair is pivotally attached to a support frame to engage the locking portion of the stop rod. A pair of holding pieces, and a closing spring for urging the tip portions of the holding pieces in a direction to normally close the holding pieces, and the inner end of the inner connecting rod in the second connecting rod is located on the base end side of the holding piece. The anti-seismic lock according to claim 1, wherein the anti-seismic lock is abutted.

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