JPH11141206A - Locking device for door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To engage a dead bolt with a receive metal fitting simply and surely in a large-sized free door. SOLUTION: This lock device is provided with a coming in and out bolt automatic engaging and disengaging mechanism 20, a synchronous rod traction mechanism 21, and an automatic lock mechanism for following member 70 in a central lock box 11 and is constituted by an upper synchronous rod 14 and a lower synchronous rod 15 which are operated by a drive body 26 of the synchronous rod traction mechanism and a following member 60. In this case, the coming in and out bolt automatic engaging and disengaging mechanism 20 has an opposing magnetic body 41 which repels or attracts in accordance with polarity of a magnetic body 4 provided at a position corresponding to the central lock box of a door frame and consists of a trigger 40 energized by a trigger spring 48 and a locking gear 45 having an engaging tooth part 43 engaged with a trigger engaging claw 42 and a pinion part 44 meshing with a coming in and out bolt 22 and a rack 31. The trigger 40 opens and stops the locking for the locking gear by the trigger spring 48 and locks the coming in and out bolt 22 by handle operation for opening a door and corresponds to polarity of the magnetic body 4 to unlock the trigger 40 when the door is closed. Consequently, it is possible to release the locking of the coming in and out bolt 22 to lock the door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device installed in a building.

[0002]

2. Description of the Related Art In general, when a large door installed in a building is locked with a lock, it is necessary to take into consideration the certainty and easiness of the engagement and disengagement relationship with a metal fitting provided on the door frame. In particular, when a large door is commonly referred to as a "free door" and can be opened either indoors or outdoors by operating an operating member, a lock that fully considers these points is required. .

For example, when the door is closed with respect to the door frame, if the dead bolt of the lock box does not align with the receiving metal, the dead bolt contacts the strike of the receiving metal and does not smoothly enter the engagement hole of the strike. Further, if the dead bolt comes out of the lock box when the door is opened, there is a problem that the door cannot be closed easily.

[0004] When a large door is locked with a lock, it is desirable to lock the central part of the door, the upper part of the door, and the lower part of the door, so-called three-point lock. Therefore, at present, a central lock box having a protruding and retracting bolt (for example, a dead bolt) is attached to the center of the large door in consideration of the reliability and easiness of the engagement and disengagement, and the protruding and retracting is caused by operation of the operation member. There is a demand for a large door locking device in which the upper synchronization rod for the upper lock box of the door and the lower synchronization rod for the lower lock or the lower lock box of the door move up and down synchronously with the inward and backward bolts. In this case, since the lower synchronizing rod has its own weight, it is kept pulled (for example, unlocked) while the operation member is being pushed down or the door is opened by, for example, an automatic lock mechanism provided in the central lock box.
It needs to be in a state. Also, at the moment when the door is closed, at least the retractable bolt automatically and securely engages with the corresponding receiving bracket, and the above-mentioned lower lock of the door or the lower synchronization rod for the lower lock box may drop synchronously. desirable.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional needs, and has as its first object the object of the present invention is to retract a central locking box retractable bolt caused by an operation of an operation member for opening a door. In synchronization with this, the upper synchronization rod for the upper part of the door and the lower synchronization rod for the lower part of the door are synchronously pulled toward the central lock box. A second object is that while the door is opened, the projecting bolt of the central lock box is always retracted into the lock box, and the upper and lower synchronization rods are kept pulled. It is. A third object is that when the door is closed, the projecting bolt automatically jumps out to the receiving metal fitting at the moment and is securely engaged, and at the same time, the upper synchronizing rod for the upper part of the door automatically rises. The lower synchronous rod for the lower part of the door is immediately released from the locked state by the automatic lock mechanism and falls by its own weight. A fourth object is to provide a sufficient amount of towing (stroke) of the upper synchronizing rod and the lower synchronizing rod corresponding to the amount of rotation of the driving body that rotates by operating the operation member. A fifth object is to provide a mechanism for automatically engaging and disengaging a retractable bolt incorporated in a central lock box, a mechanism for pulling up and down a synchronous rod, and an automatic lock mechanism for a driven member for pulling a lower synchronous rod. It is configured to.

[0006]

The door locking device according to the present invention is characterized in that the door locking device X comprises a retractable bolt automatic disengaging mechanism 20,
Synchronous rod pulling mechanism 21 and automatic locking mechanism 70 for driven member
And a first magnetic body 4 attached to the vertical frame of the door frame 1 so as to face the central lock box 11.
And the upper synchronizing rod 1 which is vertically inserted into the central lock box 11 and is connected to the driving body 26.
4 and a driven member 6 rotated by the driving force of the driving body 26
And the lower synchronous rod 15 connected to the door frame 1, and the retractable bolt automatic engagement / disengagement mechanism 20 has an opposing magnetic body 41 that repels or attracts in accordance with the polarity of the first magnetic body 4 of the door frame 1, Further, a trigger 40 urged by a trigger spring 48, an engagement tooth 43 engaged with an engagement claw 42 of the trigger, and a pinion 44 engaged with the rack 31 of the projection bolt 22.
When the door 10 is opened, the trigger 40 immediately starts locking the locking gear 45 by the spring force of the trigger spring 48, while the trigger 40
When the door is closed, the trigger 40 is driven to rotate in accordance with the polarity of the magnetic bodies 4 and 41, and the lock box 11 is closed until the door 10 closes.
It is characterized by releasing the locking state of the retractable bolt 22 which is in the retracted state.

Further, in the door locking device of the present invention, the door locking device X comprises a central lock box 11 having a retractable bolt automatic engaging / disengaging mechanism 20, a synchronous rod traction mechanism 21, and an automatic locking mechanism 70 for a driven member. A receiving metal fitting 2 attached to the vertical frame of the door frame 1 so as to face the central lock box 11 and having the first magnetic body 4; The synchronous rod pulling mechanism 21 includes an upper synchronous rod 14 connected to the body 26 and a lower synchronous rod 15 connected to a driven member 60 that rotates by the driving force of the driver 26.
The driving body 26 which is rotated by the operation of the operation member 16,
The third fixed pivot 6 is positioned below the driving body 26.
And the driven member 60 pivotally supported by
6 is an engagement receiving portion 30 of the bolt 22 from the center portion 52.
And a second engaging arm extending from the central portion 52 so as to be connected to a lower end portion of the upper synchronizing rod slide piece 35 housed in the lock box 11. 54, while the driven member 60 has an engagement projection 62 that engages with the drive engagement pin 57 of the second engagement arm 54 of the driver.

Further, in the door locking device of the present invention, the door locking device X is such that the central locking box 11 includes the retractable bolt automatic engaging / disengaging mechanism 20, the synchronous rod traction mechanism 21, and the automatic locking mechanism 70 for the driven member. A metal fitting 2 attached to the vertical frame of the door frame 1 so as to face the central lock box 11 and having the first magnetic body 4, and vertically inserted into the central lock box 11; The automatic locking mechanism 70 for the driven member comprises an upper synchronizing rod 14 connected to the driving body 26 and a lower synchronizing rod 15 connected to a driven member 60 rotated by the driving force of the driving body 26. An elevating member 71 arranged so as to be able to slide on the lower surface of the head 27 or the arc-shaped sliding surface 32 of the bolt body 28 and urged by a first urging spring 73; Rotate following the up and down movement of 71, One, a driven latch piece 80 which is biased by the second biasing spring 82, so that it can disengaging the locking claw 84 of the driven engaging piece 80, the driven member 60
And a supplementary lock piece 90 integrally attached to one side of the body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the present invention shown in the drawings will be described below with reference to an example of a large door installed in a building. First, FIG. 1 shows a large door (hereinafter, referred to as a “door”) that can be freely opened, for example, on either the indoor side or the outdoor side.
, A central lock box having horizontal retractable bolts, and upper and lower lock boxes having, for example, vertical retractable bolts, respectively, are operated, and when the lever handle on the central lock box side is operated, the vertical upper and lower synchronization rods are connected. FIG. 4 is a schematic explanatory view of an embodiment of the invention in which the horizontal emergent bolt and the vertical emergent bolt retreat synchronously to each lock box, respectively.

Therefore, when a reference numeral is roughly added to FIG. 1, reference numeral 1 denotes a door frame, and a vertical frame and an upper horizontal frame of the door frame 1 include:
Case-shaped receiving fittings 2 and 3 each having a strike
Are fixedly mounted. Reference numeral 4 denotes a first magnetic body fixedly provided on the vertical frame receiving bracket 2, reference numeral 5 denotes a second magnetic body fixedly provided on the upper horizontal frame receiving bracket 3, and reference numeral 6 denotes a buried floor or the like. The third magnetic body in the receiving bracket 7. For these magnetic members 4, 5, and 6, permanent magnets having relatively strong magnetic force are used.

Reference numeral 10 denotes a door. At the center of the door 10 is an automatic locking and disengaging mechanism 20 for a locking device, an upper and lower synchronous rod pulling mechanism 21, and an automatic lock mechanism for a driven member for pulling a lower synchronous rod. A central lock box 11 having 70 is fixedly provided. Reference numeral 12 denotes an upper lock box fixedly attached to the upper end of the door 10. Reference numeral 13 denotes a lower lock box fixedly attached to the lower end of the door 10. 14 has a lower end on the upper wall 11a of the central lock box 11 and an upper end on the bottom wall 12a of the upper lock box 12.
Are upper connecting rods (hereinafter referred to as "upper synchronous rods") inserted in a penetrating state. Reference numeral 15 denotes a lower synchronization connecting rod (hereinafter, referred to as a “lower synchronization rod”) whose upper end is inserted into the bottom wall 11b of the central lock box 11 and whose lower end is inserted into the upper wall 13a of the lower lock box 13 in a penetrating state. .) Reference numeral 16 denotes an operation member (for example, a lever handle) attached to the central lock box 11.

Incidentally, the "embodiment of the invention" of the present invention.
The door locking device X is provided with a retractable bolt automatic engagement / disengagement mechanism 20,
Synchronous rod pulling mechanism 21 and automatic locking mechanism 70 for driven member
And a first magnetic body 4 attached to the vertical frame of the door frame 1 so as to face the central lock box 11.
And an upper synchronizing rod 14 and a lower synchronizing rod 15 which are vertically inserted into the central lock box 11.

In FIG. 1 showing an embodiment of the invention, a lock device Y for an upper lock box 12 having an upper vertical protrusion bolt 17 and an upper locking member 18 and a lower lock box 13 Is similarly shown, but it is not necessary to have the same configuration. For example, instead of providing the lock device Z having the lower lock box 13, only a locking tool into which the lower end of the lower synchronizing rod 15 is fitted may be provided on the floor or the like.

Next, the door locking device X of the present invention will be described. In the central lock box 11 of the locking device X, when the mechanisms are temporarily divided, a retractable bolt automatic engagement / disengagement mechanism 20, a synchronous rod traction mechanism 21, and an automatic lock mechanism 70 for the driven member 60 are respectively provided.

Here, the "automatic engagement / disengagement mechanism of the retractable bolt" means that when the door is opened while operating the operating member, the retractable bolt retracted into the lock box is automatically locked by the locking member. On the other hand, when the door is closed, the locking member that is driven in accordance with the polarity of the magnetic body on the receiving metal member rotates, whereby the locked state of the locking member is released. The "synchronizing rod pulling mechanism" means that when the operating member is operated, the upper synchronizing rod and the lower synchronizing rod are pulled back to the lock box side in synchronization with the retraction of the retractable bolt into the lock box. In addition, the `` automatic lock mechanism for the driven member '' means that the lower synchronous rod is pulled up by the closing of the door so that the lower synchronous rod pulled out due to the operation of the operation member does not drop, and the lower synchronous rod is pulled out by the closing of the door. Temporary locking is described. Therefore, specific configurations of the automatic retracting mechanism 20 for retractable bolts, the synchronous rod traction mechanism 21, and the automatic locking mechanism 70 for the driven member 60 will be described with reference to FIGS. . FIG. 2 is a schematic explanatory view of each member in a central lock box (hereinafter, referred to as “lock box”) 11 with the door 10 closed.

First, the horizontal protrusion bolt 22 will be described. The retractable bolt 22 is in a horizontal state by an opening edge 23a of a front plate 23 forming a part of the lock box 11 and a support plate (not shown) having at least one end fixed to an inner wall surface of a side plate of the lock box 11 by caulking. It is supported by. The horizontal emergent bolt 22 is associated with the retractable bolt automatic engagement / disengagement mechanism 20 and the synchronous rod pulling mechanism 21. That is, the retractable bolt 22 is in engagement with the locking member 25 forming the automatic engagement / disengagement mechanism 20 and the driving body 26 forming the synchronous rod pulling mechanism 21.

The reference numeral 27 designates a rectangular head supported by the opening edge 23a of the front plate 23. At the rear end of the neck-shaped bolt main body 28 connected to the head 27, an engagement receiving portion 30 with which the first engagement arm 29 of the driving body 26 abuts and engages in the cross direction is integrally provided. ing. 31 is the bolt body 28
Is a rack which is an example of an engaging groove formed in a horizontal direction on the upper side of the rack. Reference numeral 32 denotes an arc-shaped sliding contact portion formed below the neck-shaped bolt main body 28. Reference numeral 33 denotes a spring receiving portion protruding from a rear wall of the engagement receiving portion 30.

Thus, the retractable bolt 22 is provided between the spring receiving portion 33 and the first spring supporting piece 36 fixed in the lock box 11 and guiding the sliding piece 35 of the upper synchronizing rod 14. It is urged by the spring member 37 in the protruding direction.

Here, each drawing showing the operation mode of the present invention will be briefly described. FIG. 2 shows a state in which the door 10 is closed as described above. In this state, the main locking mechanism in the lock box 11 (not shown) operates, and the protrusion bolt 22 is locked.
FIG. 3 shows a state in which the door 10 is to be opened and the operation member 16 is operated downward in FIG. In this case, when the driving body 26 rotates clockwise, the emergent bolt 22
Is retracted into the lock box, and the upper synchronization rod 14 and the lower synchronization rod 15 are pulled in the lock box (arrow) direction. FIG. 4 shows a state in which the door 10 is opened and the operator releases the operating member 16 in FIG. In this case, the retractable bolt 22 is automatically locked by the locking member 25 of the automatic engagement / disengagement mechanism 20 at the moment when the door 10 is opened, and even if the operator releases the operating member 16 as it is (the operating member is Even if it returns to the original position due to the spring force of (2), the state of being locked by the locking member 25 is maintained.

The mechanism 2 for automatically engaging and disengaging the retractable bolt 22
0 will be described. The automatic engagement / disengagement mechanism 20 locks the retractable bolt 22 retracted into the lock box 11 by the locking member 25 while the door 10 is open, and keeps the retracted bolt 22 retracted into the lock box 11. When the lock 10 is closed, the lock is automatically released by the trigger 40 of the lock member 25 which is driven according to the polarity (repulsion or suction) of the opposed magnetic body 4.

Accordingly, the automatic engagement / disengagement mechanism 20 includes the first magnetic body 4 of the receiving fitting 2 and the first magnetic body 4 at one end.
An L-shaped trigger 40 having an opposing magnetic body 41 that repels (in this embodiment) corresponding to the polarity of
0, an engaging tooth portion (an example of an engaging groove) 43 to be locked by an engaging claw 42 formed at the other end of the rack 3, and a rack 3 of the protrusion bolt 22.
1 and a locking gear (or locking lever) 45 integrally having a pinion portion 44 meshing therewith. Therefore, the locking member 25 of the automatic engagement / disengagement mechanism 20 is composed of the trigger 40 and the locking gear 45.

Here, a specific configuration of the locking member 25 will be described with reference to FIG. First, the trigger 40 of the locking member 25 is disposed above the head 27 of the retractable bolt 22 via the first fixed pivot 47. "L" or "ku"
The trigger 40 is always urged in a counterclockwise direction (a direction in which it engages with the locking gear) by a trigger spring 48 having a central portion wound around a first fixed pivot 47. The opposing magnetic body 41 of the trigger 40 faces the opening 49 formed in the front plate 23, and can face the first magnetic body 4 of the receiving fitting 2 when the door is closed (locked). Meanwhile, trigger 4
The zero engaging claw 42 is positioned so as to face one side surface of the protrusion bolt 22, and is engageable with and disengageable from the engaging tooth 43 of the locking gear 45. Next, the locking gear 45 of the locking member 25 is connected to the bolt body 2 of the protrusion bolt 22 via the second fixed pivot 50.
8 is provided in the vicinity. The locking gear 45 is, as it were, a deformed gear structure. In this embodiment, the engaging teeth 43 are ratchet teeth (selector tooth surfaces) that engage and disengage with the engaging claws 42 extending in the radial direction. On the other hand, the pinion portion 44 integrally provided on one side surface of the engagement tooth portion 43 with a small radius is always provided on the rack 3 of the protrusion bolt 22.
1 is engaged.

Next, the synchronous rod pulling mechanism 21 will be described. The member serving as the center of the synchronous rod pulling mechanism 21 is a driving body 26. As described above, the driving body 26 has its first engagement arm 29 always engaged with the engagement receiving portion 30 of the retractable bolt 22, and is rotated by the inner lever handle or the outer lever handle as the operating member 16. It is arranged in the lock box 11 so as to perform.

The structure of the driving body 26 will be described first. Reference numeral 52 denotes a cylindrical central portion, in which a square shaft hole 53 into which an operating shaft for a lever handle is fitted is mainly formed. Reference numeral 54 denotes a wide second engagement arm provided continuously below the central portion 52. When the overall configuration of the second engagement arm 54 to the first engagement arm 29 is observed with reference to FIG. 2 or FIG. 3, the appearance of the thumb or the forefinger with two fingers open is exhibited.

Thus, the second engagement arm 54 corresponding to the thumb
Is inserted into the lower end portion 35a of the upper synchronizing rod slide piece 35 vertically installed in the lock box 11. A first drive engagement pin 56 that protrudes from the distal end portion and that sufficiently engages with a first guide hole 55 formed in the lower end portion 35 is provided. Also, the square shaft hole 5 of the second engagement arm 54
A second drive engagement pin 57 that protrudes from the base closer to the third and engages in sliding contact with a lower synchronous rod pulling driven member 60 that is pivotally supported below the driver 26.

Reference numerals 58 and 59 denote central portions 5 of the driving body 26.
2 are first and second stopper pins disposed on the left and right of the second stopper pin. The right first stopper pin 58 abuts against the inner wall surface of the bay formed by the second engagement arm 54 of the driving body 26,
On the other hand, the left second stopper pin 59 is in contact with the base peripheral wall surface of the second engagement arm 54 of the driving body 26. Therefore,
The driving body 26 rotates within a predetermined angle. Although not shown, one side surface of the central portion 52 of the driving body 26 protrudes,
A driving spring that constantly urges the driving body 26 in a counterclockwise direction is wound. Therefore, even if the driving body 26 is rotated clockwise by the pressing operation of the operating member 16, in a normal state (when the operating member 16 is released), the driving body 26 returns to the state shown in FIG. I do.

Next, the synchronous rod pulling mechanism 21 together with the driving body 26
Will be described. The driven member 60 is formed in a small fish (for example, goldfish) shape as a whole, and is disposed below the driving body 26 via a third fixed pivot 61.

Reference numeral 62 denotes an engaging projection formed on the back fin portion and engaging with the second driving engaging pin 57 of the driving body 26. Reference numeral 63 denotes a distal end engaging pin protruding from the eye. On the other hand, reference numeral 64 denotes a rear end engaging pin protruding from the tail fin portion, and this rear end engaging pin is engaged with a second guide hole 99a of a short slide piece 99 described below. In this case, an engagement pin may be provided on the short slide piece 90, and a guide hole may be formed on the tail fin portion. Numeral 65 is a long hole-shaped notch formed a little wider in the portion of the elastic.

Finally, the automatic locking mechanism 70 for the driven member 60
Will be described. The automatic lock mechanism 70 is roughly composed of three members.

That is, first, reference numeral 71 denotes an elevating member which is disposed in a cross direction below the retractable bolt 22 via the fourth fixed pivot 72. The elevating member 71 is attached to the front plate 23.
And is constantly urged in the direction of the retractable bolt 22 by a first urging spring (push-up spring) 73 having a central portion wound around the fourth fixed pivot 72. I have.

Reference numeral 75 denotes a roller which is supported by the upper end of the vertical lifting member and slides on the lower surface of the head 27 of the projecting bolt 22 and the arc-shaped sliding contact portion 32 of the bolt body 28, respectively. Reference numeral 76 denotes a vertical guide slot formed at the center of the elevating member (including a portion near the center).
A fixed pivot 72 extends through this vertical guide slot 76.
Reference numeral 77 denotes a sliding pin protruding from the lower end of the elevating member. It is a notch for supporting the other end of the first biasing spring 73 formed at an appropriate location on one side wall of the 78 elevating member.

Reference numeral 80 denotes a driven locking piece disposed below the vertical lifting / lowering member 70 via a fifth fixed pivot 81.
The driven locking piece 80 is fixed to the sliding pin 7 by a second biasing spring 82 having a central portion wound around the fifth fixed pivot 81.
7 or is always urged in a direction (counterclockwise) for engaging a supplementary lock piece 90 described later.

Thus, the driven locking piece 80 is formed in an L-shape as a whole. The left side surface of the lock box 11 on the upper end portion 80a side facing the front plate 23 is a curved or “reverse” sliding contact surface 83, and the sliding contact surface 83 is a sliding pin. Press against 77. On the other hand, the bottom wall 11b of the lock box 11 extends in an angular direction with respect to the upper end 80a.
A locking claw 84 is formed at the lower end portion 80b opposite to the engaging portion 84 to engage and disengage with a ratchet tooth (selector tooth) 91 which is an example of an engagement groove of the supplementary lock piece 90.

Next, the supplementary lock piece 90 is attached to one side of the driven member 60 via a sixth fixed pivot 92 penetrating the above-mentioned slotted notch 65. In addition, a guide slot 93 is provided at the other end of the supplementary lock piece 90 extending in the radial direction.
The guide pin 63 of the driven member 60 is engaged with the guide elongated hole 93. Therefore, the driven member 6
0 is a supplementary lock piece 90 via the tip engagement pin 63.
And the supplementary lock piece 9
The driven locking piece 80 is locked to or unlocked from the driven locking piece 80 via the engagement and disengagement of the driven locking piece 80 with the driven locking piece 80. The first to sixth fixed pivots 47, 50, 61, 72, 8 described above are used.
Reference numerals 1 and 92 are mounted on the lock box 11 as required.

Next, the upper synchronizing rod 14 and the lower synchronizing rod 15 which are pulled in the lock box direction by the synchronizing rod pulling mechanism 21 will be described. First, the upper synchronizing rod 14 is pulled by the driving force of the driving body 26, but in this embodiment, descends via the vertically long slide piece 35 provided inside the rear wall 11c of the lock box 11. In this case, the slide piece 35 is guided by the angle-shaped upper guide piece 95 fixed to the upper part in the lock box and the above-mentioned spring support piece 36, and a push-up spring attached to one side of the slide piece 35. It descends against the spring force of 96. The lower end of the push-up spring 96 is supported by an L-shaped spring receiving piece 97 fixed at an appropriate position in the center of the lock box, while the upper end protrudes from the center of the slide piece 35. Supported by the spring receiving horizontal portion 98.

Next, the lower synchronizing rod 15 is pulled through the driven member 60 which rotates counterclockwise by the driving force of the driving body 26. In this embodiment, the lower synchronizing rod 15 further moves along the rear wall 11c of the lock box 11. It descends via the short slide piece 99 inside. In this case, the short slide piece 99 rises via the angle-shaped lower guide piece 100 fixed to the lower part in the lock box.

The operation of the above configuration will be described.
First, the locking mechanism (not shown) in the lock box 11 is unlocked, and when the operating member 16 is pressed downward to open the door 10, the state shown in FIG. 2 changes to the state shown in FIG. In this case, the driving body 26 rotates clockwise, whereby the retractable bolt 22 is retracted into the lock box 11 and the upper synchronous rod 14 is rotated.
The lower synchronizing rod 15 is pulled in the lock box (arrow) direction.

Then, the synchronous movement of each member constituting each mechanism 20, 21, 70 will be specifically described. When the driving body 26 rotates clockwise due to the operation of the operation member 16, the protrusion bolt 22 is moved to the first engagement arm 2 of the driving body 26.
9 retreats against the spring force of the first spring member 37.

Thus, the locking gear 45 of the locking member 25
Means that the pinion portion 44 of the rack 31
And rotates counterclockwise. As a result, the engagement teeth 43 of the locking member 25 are in the downward state.
Further, the long plate-shaped slide piece 35 is lowered by the second engagement arm 54 of the driving body 26 against the spring force of the push-up spring 96. The lower synchronous rod towing follower 60 is rotated counterclockwise around the third fixed pivot 61 by the second drive engagement pin 57 of the driver 26. Further, the elevating member 71 is configured such that the roller 75 above the elevating member 71 is
And slides down to the lower surface of the head 27 of the emergence bolt 22, so that it descends against the spring force of the first biasing spring 73 while being guided by the fourth fixed pivot 72 and the vertical guide slot 76. At this time, the driven locking piece 80 urged by the second urging spring 82 follows the lowering of the elevating member 71 and rotates counterclockwise. In this case, the driven locking piece 80 is
Slide pin 77 picks up the arc-shaped sliding contact surface 83 of the driven locking piece 80, and rotates about the fifth fixed pivot 81 by the spring force of the second biasing spring 82. The locking claw 84 of the driven locking piece 80 is engaged with the distal end engaging pin 6 of the driven member 60.
3 and engage the ratchet teeth 91 of the supplementary locking piece 90 which rotates counterclockwise about the sixth fixed pivot 92 while supporting the ratchet teeth 91 one by one. Thereby, the driven member 6
0 is locked to the driven locking piece 80 via the supplementary locking piece 90.

FIG. 4 shows a state in which the operator opens the door 10 and releases the operating member 16 in FIG. In this case, when the door 10 is opened, the retractable bolt 22 is automatically locked by the locking member 25 of the automatic engagement / disengagement mechanism 20, and is locked to the locking member 25 even if the operator releases the operating member 16 as it is. State that has been maintained.

As described above, the locking member 25 of the automatic engagement / disengagement mechanism 20 includes the trigger 40 constantly urged in the engagement direction by the trigger spring 48 and the locking gear 45 meshed with the protrusion bolt 22. The first of the receiving bracket 2
The trigger 40 separated from the magnetic body 4 instantaneously rotates in the counterclockwise direction, and its engaging claw 42 engages with the engaging tooth portion 4 of the locking gear 45.
5 is engaged. As a result, the retractable bolt 22 is locked via the trigger 40 and the locking gear 45, and the trigger 40
Remains retracted into the lock box 11 unless it rotates in the direction of disengagement against the spring force of the trigger spring 48.

In the above case, when the operator releases the operating member 16, the operating member 16 returns to the original position by the spring force of the driving spring. As a result, the driving body 26 rotates counterclockwise, and the long plate-shaped slide piece 3 is rotated.
5 is raised by the spring force of the push-up spring 96, but the driven member 60 does not rotate clockwise. That is, when the driving body 26 rotates counterclockwise, the second
The drive engagement pin 57 changes its position and descends slightly while sliding on the arc-shaped peripheral side surface above the driven member 60.
0 is the driven locking piece 8 of the automatic lock mechanism 70 as described above.
Since it is locked at 0 or the like, the state where the lower synchronous rod 15 is pulled is maintained.

When the door 10 is opened, the upper synchronizing rod 14 is opened.
Of the lock device Y at the top of the door even if
Is in the unlocked state. The vertical projecting bolt 17 is used for the door 10
Upper locking member 18 that faces second magnetic body 5 when
The locked state is released by the rotation of.

FIG. 7 and FIG. 8 are schematic explanatory diagrams at the moment when the door 10 is closed with respect to the door frame 1. When the door 10 is closed, the state shown in FIG. 2 is obtained. First, the state shown in FIG. 7 will be described. When the opposing magnetic body 41 of the trigger 40 of the lock box 11 faces the corresponding first magnetic body 4 of the receiving bracket 2, the magnetic body 4 and the opposing magnetic body 41 repel each other in this embodiment, and the trigger 40 is a trigger spring. It rotates in the direction of disengagement against the spring force of. As a result, the locking of the locking member 25 to the retractable bolt 22 is automatically released, and the retractable bolt 22
Project from the lock box 11 by the spring force of the first spring member 37. In this case, the locking gear 45 of the locking member 25 rotates clockwise as indicated by the arrow.

Next, the state shown in FIG. 8 will be described. When the retractable bolt 2 moves in the direction of the arrow, the first biasing spring 73
The raising and lowering member 71 urged by the ascending member rises via a roller 75 that slides on the lower surface of the retractable bolt 2. At this time, the driven locking piece 80 is pushed away by the sliding pin 77 of the elevating member 71, and rotates clockwise against the spring force of the second biasing spring 82. As a result, the locking claw 84 of the driven locking piece 80
Is moved away from the supplementary lock piece 90, the driven member 60 rotates clockwise about the third fixed shaft 61, and the lower synchronizing rod 15 descends. At this time, the supplementary lock piece 90 follows the rotation of the driven member 60 and rotates in the same direction about the sixth fixed pivot 92 as a fulcrum.

[0046]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One example of the automatic disengagement mechanism 20 of the present invention
Is closed, the trigger 40 of the locking member 25 driven in accordance with the polarity (repulsion) of the opposing magnetic members rotates clockwise, and as a result, the locking of the locking member 25 is automatically released. You. By the way, in this case, those skilled in the art can very easily consider an embodiment in which the trigger 40 in the lock box 11 is inverted with reference to FIG. In this modified embodiment, the opposing magnetic body 41 of the trigger 40 is located below, while the engaging claw 42 of the trigger 40 can be disengaged from the engaging tooth 43 of the locking gear 45. Is located above. In this case, it is necessary to slightly change the position where the engaging teeth 43 are formed. However, when the door 10 is closed, the trigger 4 that is driven according to the polarity (attraction) of the opposing magnetic members is provided.
0 rotates clockwise, and as a result, the engaging claw 42 separates from the engaging tooth 43 of the locking gear 45. Therefore, the trigger 40 of the locking member 25 of the present embodiment rotates in accordance with the polarity (repulsion or suction) of the first magnetic body 4 of the receiving fitting 2, and as a result, the locking gear 45 automatically rotates. It is only necessary that the lock is released.

In the embodiment of the present invention, the relationship between the plurality of movable pins (for example, 56, 62, 64, etc.) and the guide slots engaged with these movable pins can be arbitrarily designed. Can be changed.

[0048]

As is clear from the above description, the present invention has the following effects. (1) The retractable bolt of the central lock box is retracted due to the operation of the operating member for opening the door, and in synchronization with this, the upper synchronous rod for upper locking of the door and the lower synchronous rod for lower locking of the door are synchronized. Each is synchronously pulled in the direction of the central lock box. (2) Also, while the door is open, the retractable bolt of the central lock box is always retracted into the lock box, and the upper and lower synchronization rods are maintained in the retracted state. (3) Further, when the door is further closed, at that moment, the projecting bolt automatically pops out to the receiving fitting and is securely engaged, and at the same time, the upper synchronizing rod for locking the door upper part automatically rises. The lower synchronous rod for locking the lower part of the door is immediately released from the locked state by the automatic locking mechanism, and falls by its own weight. (4) Therefore, especially when the mechanism of the present invention is adopted for a large free-door type door, the opening and closing operation of the door is very easy, and the door is automatically opened at "3 or more places" instantly when the door is closed. Can be locked. (5) Respective members constituting an automatic engagement / disengagement mechanism of a retractable bolt incorporated in the central lock box, a pulling mechanism for the upper and lower synchronous rods, and an automatic lock mechanism for a driven member for pulling the lower synchronous rod are rationally formed. Are combined. In particular, the lower synchronizing rod 15 is
6 is pulled upward through the driven member 60 which is rotated by the second engagement arm 54, so that a sufficient amount of pulling (stroke) of the lower synchronous rod can be obtained in accordance with the rotation amount of the driving body.

[Brief description of the drawings]

 1 to 8 are explanatory views showing an embodiment of the present invention.

FIG. 1 is a schematic explanatory view showing an example of an embodiment of the present invention.

FIG. 2 is a schematic explanatory view showing the internal structure of the lock box when the door is closed.

FIG. 3 is an explanatory diagram of a state when an operator operates an operation member in FIG. 2;

FIG. 4 is an explanatory view showing a state in which the operator opens the door and releases the operating member in FIG. 3;

FIG. 5 is a schematic explanatory view showing the relationship between a locking member and a retractable bolt.

FIG. 6 is a schematic explanatory view of main parts (supplementary lock pieces, driven members, and the like).

FIG. 7 is a schematic explanatory view showing the state of the automatic engagement / disengagement mechanism at the moment when the door is closed.

FIG. 8 is a schematic explanatory view showing the state of the automatic lock mechanism at the moment when the door is closed.

[Explanation of symbols]

X: locking device, Y, Z: locking device, 1: door frame, 2, 3, 7
... Receiving bracket, 4 ... First magnetic body, 5 ... Second magnetic body, 6 ... Third magnetic body, 10 ... Door, 11 ... Lock box, 11a ... Lock box upper wall, 12 ... Upper lock box, 12a ... Bottom wall, 13 ... lower lock box,
13a: Upper wall of the lower lock box, 14: Upper synchronous rod, 15: Lower synchronous rod, 20: Automatic locking and disengaging mechanism of the projecting and retracting bolt, 21: Synchronous rod traction mechanism, 22: Projecting and retracting bolt, 23: Front plate, 25 ...
Locking member, 26: drive body, 29: first engagement arm, 31: engagement groove (rack), 32: arc-shaped sliding contact surface, 35: long plate-shaped slide piece, 36: spring support piece, 40: trigger 41, opposed magnetic body, 42, engaging claw, 43, engaging tooth portion, 44, pinion portion, 45, locking gear, 47, first fixed pivot, 48,
Trigger spring, 50: second fixed pivot, 54: second engagement arm, 55: first guide hole, 56: first drive engagement pin, 57
... Second drive engagement pin, 60 ... Follower member, 61 ... Third fixed pivot, 62 ... Engagement projection, 63 ... Tip engagement pin, 64 ...
Rear end engaging pin, 70: automatic locking mechanism, 71: elevating member, 72: fourth fixed pivot, 73: first biasing spring, 75
... Roller, 76 ... Vertical guide slot, 77 ... Sliding pin, 80
... Following locking piece, 81 ... Fifth fixed pivot, 82 ... Second biasing spring, 83 ... Sliding contact surface, 84 ... Locking claw, 91 ... Ratchet teeth, 92 ... Sixth fixed pivot, 93 ... Guide slot , 99 ... short slide piece.

Claims (7)

[Claims] 1. A central locking box 11 having a door locking / unlocking mechanism 20, a synchronous rod traction mechanism 21, and an automatic locking mechanism 70 for a driven member.
The bracket 2 is attached to the vertical frame of the door frame 1 so as to face the door, and is vertically inserted into the central lock box 11 with the receiving metal fitting 2 having the first magnetic body 4 and connected to the driving body 26. The upper / lower locking rod 15 is connected to a driven member 60 which is rotated by the driving force of the driving body 26. Opposing magnetic body 41 that repels or adsorbs in response to
And a trigger 40 urged by a trigger spring 48, an engagement tooth 43 engaged with an engagement claw 42 of the trigger, and a pinion 44 engaged with the rack 31 of the projection bolt 22. When the door 10 is opened, the trigger 40 immediately starts locking to the locking gear 45 by the spring force of the trigger spring 48, while when the door 10 is closed, the trigger 40 turns the magnetic Body 4,
A locking device for a door, which is driven to rotate in accordance with the polarity of 41 and releases the locking state of the retractable bolt 22 that is retracted in the lock box 11 until the moment when the door 10 is closed. 2. The apparatus according to claim 1, wherein the trigger 40 and the locking gear 45 constitute a locking member 25 for the lifting bolt 22.
And an L-shaped locking piece pivotally supported by a first fixed pivot 47 so as to be positioned above the first fixed pivot 47. The locking gear 45 is second fixed so as to be located near the bolt body 28 of the protruding bolt 22. A door locking device, which is a gear structure pivotally supported by a pivot 50. 3. A central locking box 11 having a door locking / unlocking mechanism 20, a synchronous rod traction mechanism 21, and an automatic locking mechanism 70 for a driven member.
The bracket 2 is attached to the vertical frame of the door frame 1 so as to face the door, and is vertically inserted into the central lock box 11 with the receiving metal fitting 2 having the first magnetic body 4 and connected to the driving body 26. The synchronous rod pulling mechanism 21 includes an upper synchronous rod 14 and a lower synchronous rod 15 connected to a driven member 60 that is rotated by the driving force of a driving body 26. And the driven member 60 pivotally supported by a third fixed pivot 61 so as to be located below the driving body 26. The driving body 26 is engaged with the engagement receiving portion 30 of the protrusion bolt 22 from the central portion 52. The first extended to fit
An engagement arm 29 and a second engagement arm 54 extending from the central portion 52 so as to be connected to the lower end of the upper synchronizing rod slide piece 35 housed in the lock box 11; 60
Is a locking device for a door, comprising an engagement projection 62 which engages with a drive engagement pin 57 of the second engagement arm 54 of the driving body. 4. A supplementary lock piece 90 is attached to one side surface of the driven member 60 via a sixth fixed pivot 92 that penetrates a notch 65 formed in the driven member. Further, the driven member 60 and the supplementary lock piece 90 are integrally connected by a guide elongated hole 93 of the supplementary lock piece and a distal end engaging pin 63 of the driven member that engages with the guide elongated hole 93. Locking device for a door. 5. A central lock box 11 having a door locking / unlocking mechanism 20, a synchronous rod pulling mechanism 21, and an automatic lock mechanism 70 for a driven member.
The bracket 2 is attached to the vertical frame of the door frame 1 so as to face the door, and is vertically inserted into the central lock box 11 with the receiving metal fitting 2 having the first magnetic body 4 and connected to the driving body 26. The automatic lock mechanism 70 for the driven member comprises an upper synchronizing rod 14 and a lower synchronizing rod 15 connected to a driven member 60 rotated by the driving force of the driving body 26. An elevating member 71 disposed so as to be able to slide on the arc-shaped sliding contact surface 32 of the main body 28 and urged by a first urging spring 73, and following the elevating movement of the elevating member 71 Of the driven member 60 so that it can be disengaged from the driven locking piece 80 urged by the second biasing spring 82 and the locking claw 84 of the driven locking piece 80. Supplementary lock piece 90 integrally attached to one side Door for locking apparatus characterized by comprising. 6. The supplementary lock piece 90 according to claim 5,
Is the sixth through the notch 65 formed in the driven member.
The driven member 60 and the supplementary lock piece 90 are attached to the driven member via the fixed pivot 92, and the guide member 93 of the supplementary lock piece and the distal end portion of the driven member engaged with the guide elongated hole 93 are connected to each other. A locking device for a door, wherein the locking device is integrally connected by a mating pin 63. 7. The moving member 71 according to claim 5,
A roller 75 is provided below the projecting bolt 22 so as to be guided by the fourth fixed pivot 72, and slides on the lower surface of the head 27 of the projecting bolt 22 or the arc-shaped sliding contact surface 32 of the bolt body 28 at the upper part. On the other hand, an L-shaped driven locking piece 80
A door locking device provided with a sliding pin 77 which presses against an arc-shaped sliding contact surface 83 formed at an upper end portion 80a of the door.