JPH116350A - Extension bolt lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension bolt lock device which is simplified in the structure and has a fewer number of parts and which is excellent in locking/ unlocking controllability and locking stability. SOLUTION: A receive hole 7 of a rotary manipulation shaft 6 of a handle is formed in the main shaft 4 contained in a case 1, and driven cam grooves 14, 15 in which drive pins 8, 9 of drive arms 2, 3 of the main shaft 4 are fitted, are provided at the side face of the middle part of vertically moving lock members 12, 13. A driven projection 21 with which the drive arm 3 gets into contact, is formed at the lower face side of the base end of the laterally transferring latch bolt 20. The latch bolt 20 and the upper and lower lock members 12, 13 are pulled in the case 1 by the rotation of the main shaft 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clement lock device in which a pair of upper and lower locking members are simultaneously driven to a locking position or an unlocking position by rotation of a rotary operation shaft of a handle.

[0002]

2. Description of the Related Art In a conventional clement lock device disclosed in Japanese Utility Model Laid-Open Publication No. 5-47272, a rotating operation shaft of a handle rotatably supported by a case fixed to a door and a door are fixed to a fixed frame. An interlocking link mechanism is interposed between the upper and lower locking members arranged for locking.
The interlocking link mechanism includes a crank connected to the rotation operation shaft of the handle so as to rotate integrally, a pair of upper and lower slide blocks fitted to the case so as to be linearly slidable, and the lock member connected to the tip. An intermediate link has a distal end connected to the proximal end of the slide block by a pivot, and a proximal end connected to the distal end of the crank by a pivot.

[0003] In this clemon lock device, when the handle is rotated forward and backward, the slide block reciprocates linearly up and down, and the upper and lower lock members advance and retreat in the up and down direction to engage and disengage with the metal receiving portion on the fixed frame side. However, since it is mechanically complicated and has a large number of components, the cost of manufacturing and assembling is increased. Also, with this Clemonrock device,
When locking the door by rotating the handle, the door is completely closed, and the lock fittings attached to the tips of the upper and lower lock members themselves or the lock members correctly face the metal receiving parts on the fixed frame side. Must be.

[0004] However, if the resilience of the sealing packing mounted between the fixed frame and the door is strong, or
When installed on the roof of a building, such as a communication shelter, and the door is blown by strong winds, it is not easy to turn the handle while holding the door in the closed position, and in some cases, the person holding the door and the handle In some cases, two operators are required, and the operability is not good.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to simplify the mechanism and reduce the number of parts, thereby reducing the cost of manufacturing and assembling and providing a means for holding the door in the closed position. The present invention provides a clemon lock device which can be properly locked by a single operator, is excellent in operability, and is locked in three places, and has excellent locking stability. That is.

[0006]

Means for Solving the Problems In the clemon lock device of the present invention, a pair of drive arms 2
The main shaft 4 having the shaft 3 is rotatably supported with respect to the case 1, and a receiving hole 7 into which the rotation shaft 6 of the handle 5 is fitted is provided at the center of the main shaft 4. Driving pins 8 and 9 are provided, are guided in a linear motion in the vertical direction, are housed in the case 1,
Driven cam grooves 14 and 15 in which drive pins 8 and 9 are fitted are provided in a laterally long manner on side surfaces of intermediate portions of the upper lock member 12 and the lower lock member 13 protruding from the lower surface through hole 11. The upper and lower lock members 12 and 13 are moved and urged in the immersion direction by springs 17 and 18 and guided so as to linearly move in the left and right direction, are housed in the case 1, and the tip ends protrude from the side through holes 19 of the case 1. A passive projection 21 with which one drive arm 3 of the main shaft 4 abuts is provided on the lower surface side of the base end portion of the latch bolt 20 to be moved.

When the door 24 is rotated in the closing direction, the cam surface 20a on the rear surface of the latch bolt 20 at the end of the closing rotation collides with the edge of the receiving metal 26 on the fixed frame 25 side. Retracts once against the bias of the spring 23. When the closing rotation further proceeds and the door 24 reaches the fully closed position where the sealing packing 29 is compressed, the latch bolt 20 is immediately moved forward by the bias of the spring 23,
Engage with receiver 26. This locks the door 24 in the closed position.

When the handle 5 is gripped and the rotary operation shaft 6 is turned in a predetermined direction in the state where the door 24 is held in the closed position, the main shaft 4 rotates integrally and the drive pins 8 and
9 pushes the groove wall surfaces 14a, 15a of the driven cam grooves 14, 15, so that the upper and lower lock members 12, 13 are protruded from the case 1 by a predetermined stroke, and the leading ends of the lock members 12, 13 or the lock members 12, 13 are provided. The lock fittings 12a and 13a attached to and attached to the upper frame engage with upper and lower receivers 27 and 28 on the fixed frame 25 side. Thus, a three-point lock by the latch bolt 20 and the lock members 12, 13 is established.

According to the second aspect of the present invention, a stopper 16 is provided on the upper end of the lower locking member 13, and the stopper 16 is provided on the upper surface of the intermediate portion of the latch bolt 20.
Is provided with a stopper receiving portion 22 which can be engaged. When the lower lock member 13 is pushed to the locking position by the rotation of the main shaft 4 as described above, the stopper portion 16 of the lower lock member 13 fits into the stopper receiving portion 22 of the latch bolt 20, so that the latch bolt 20 The latch bolt 20 is restrained in the locked position engaged with the receiving metal 26.

In unlocking, the rotating operation shaft 6 of the handle 5
When the is rotated in the opposite direction, the main shaft 4 rotates integrally and the drive pins 8 and
9 is a groove wall surface 14b, 1 on the opposite side of the driven cam grooves 14, 15.
5b, the upper and lower lock members 12, 13 are retracted into the case 21 by a predetermined stroke, and the distal ends of the upper and lower lock members 12, 13 or the lock members 12, 13 themselves.
The lock fittings 12a and 13a attached to and attached to the fixing frame 25 are detached from the receiving members 27 and 28 on the fixed frame 25 side. The retracting operation of the lower lock member 13 causes the stopper 16
Escapes from the stopper receiving portion 22. For this reason, the latch bolt 20 that has been released from the restraint moves the passive projection 21 to the main shaft 4.
Is pushed into the case 1 by a predetermined stroke, and the distal end portion is separated from the receiving metal 26 on the fixed frame 25 side. Thus, the three-point lock is released by a single operation of rotating the handle 5.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a case 1 is composed of a thin box-shaped main body 30 and a back cover plate 31, and a bolt 32 for assembling the back cover plate 31 and the case body 30 connects the case 1 to the door 2.
4 also serves as a bolt for fixing to. A spacer cylinder 33 is fitted to the bolt 32. Case body 30
Are provided at the center of the rear cover plate 31 and at the center thereof.
5 is fitted.

A guide pin 37 to be inserted into the horizontally elongated slot 36 of the latch bolt 20 is fixed to a portion on the right side of the upper end of the back cover plate 31. The biasing spring 23 of the latch bolt 20 is configured by a compression coil spring, and the biasing springs 17, 18 of the upper and lower lock members 12, 13 are configured by leaf springs. The proximal ends of the springs 17 and 18 are fixed to spring support pins 38 and 39 fixed to the back cover plate 31, and the distal ends of the springs 17 and 18 are
13 are fitted to spring support pins 40 and 41 fixed thereto.

An upper and lower guide slot 43 is provided at an upper end portion of the lower lock member 13, and
7 is also passed through the guide slot 43. A guide slot 4 in the vertical direction is provided at the lower end of the upper lock member 12.
2 are provided, and guide pins 44 fixed to the back cover plate 31 are passed through the guide slots 42. The guide pin 44 also serves as a pivot pin of the stopper lever 45. The stopper lever 45 is rotationally urged toward the main shaft 4 by a compression coil spring 46, and is provided with
By engaging with the tip of the drive arm 2 at 7,
Main shaft 4 is held in the unlocked position.

Locking members 12a and 13a are connected to the upper and lower locking members 12 and 13, respectively.
a and 13a are guided by a guide fitting (not shown) fixed to the door 24. The shape and structure of the handle device 5 can be arbitrarily selected from known ones. In the present embodiment, the case 1 is mounted on the front side of the door 24 so as to be exposed. However, the case 1 can be mounted on the back side of the door 24 so as to be mounted, or the case 1 is housed inside the door 24. You can also.

[0015]

As described above, the clement lock device according to the first aspect of the present invention includes the case 2 main shaft 4 and the upper and lower lock members 1.
The main components are 2, 13 and the latch bolt 20, and the mechanism is simplified and the number of parts is small.
Production and assembly costs can be reduced. Further, at the end of the closing operation of the door 24, the latch bolt 20 automatically engages with the receiving metal 26 on the side of the fixed frame 25, so that the worker can use the door 2 by himself.
It is not necessary to hold the door 4 in the closed position, and even in a situation where the sealing packing has a strong repulsive force or the door 24 is blown by a strong wind, the door 24 can be easily and accurately closed and locked by one person alone. And excellent operability.

The locking of the door 24 to the fixed frame 25 is performed at the three positions of the latch bolt 20 and the upper and lower locking members 12 and 13, so that the locking reliability is excellent. Also,
The pair of drive pins 8 and 9 of the main shaft 4 are connected to the upper and lower locking members 1.
Since the passive projections 21 at the base end of the latch bolt 20 are pushed by the distal end of the drive arm 3 of the main shaft 4, the three-point lock release operation is performed. This can be performed simultaneously by a single operation of rotating the handle 5, and the unlocking operation is excellent in simplicity.

In the clamp lock device according to the second aspect of the present invention, the stopper portion 16 is provided at the upper end of the lower lock member 13 and the stopper receiving portion 22 is engageable with the stopper portion 16 on the upper surface side of the intermediate portion of the latch bolt 20. When the lower lock member 13 is pushed out to the locking position, the stopper portion 16 is engaged with the stopper receiving portion 22 to restrain the latch bolt 20 in the locking position. Since the latch bolt 20 does not accidentally come off and the latch bolt 20 functions in the same manner as a so-called dead bolt, the locked state is more securely held.

[Brief description of the drawings]

FIG. 1 is a front view of a clemon lock device according to an embodiment of the present invention.

FIG. 2 is a rear view of the clemon lock device.

FIG. 3 is a right side view of the clemon lock device.

FIG. 4 is a plan view of the clemon lock device.

FIG. 5 is a sectional view taken along line AA of FIG. 2;

FIG. 6 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Main shaft drive arm 3 Main shaft drive arm 4 Main shaft 5 Handle 6 Handle rotation operation shaft 7 Main shaft receiving hole 8 Drive pin 9 Drive pin 10 Upper surface through hole of case 11 Lower surface through hole of case 12 Upper locking member 13 Lower lock member 14 Driven cam groove of upper lock member 15 Driven cam groove of lower lock member 16 Stopper portion of lower lock member 14 Spring for biasing upper lock member 15 Spring for biasing lower lock member 19 Side through hole of case Reference Signs List 20 latch bolt 21 passive projection of latch bolt 22 stopper receiving part of latch bolt

Claims (2)

[Claims] 1. A main shaft 4 having a pair of drive arms 2 and 3 is accommodated in a central portion of a case 1 and is rotatably supported with respect to the case 1. A rotary operation shaft 6 of a handle 5 is provided in a central portion of the main shaft 4. A receiving hole 7 to be fitted is provided, and driving pins 8 and 9 are provided at the distal ends of the driving arms 2 and 3, and are guided in a linear motion in the vertical direction and accommodated in the case 1. Driven cam grooves 14 and 15 in which drive pins 8 and 9 are fitted are provided laterally on intermediate side surfaces of the upper lock member 12 and the lower lock member 13 projecting from the lower surface through-hole 11, and the upper and lower lock members 12 and 13 are spring-loaded. The lower surface of the base end of the latch bolt 20 which is urged in the immersion direction by 17 and 18 and is guided in a linear motion in the left and right direction and is accommodated in the case 1, and the tip of which protrudes and retracts through the side through hole 19 of the case 1. Side, one drive arm of the spindle 4 The latch bolt 20 is moved and urged in the projecting direction by a spring 23, and the latch bolt 20 and the upper and lower locking members 12 and 13 are drawn into the case 1 by the rotation of the main shaft 4. Clemon rock equipment. 2. A stopper 16 is provided on the upper end of the lower lock member 13, and a stopper receiving portion 22 with which the stopper 16 can be engaged is provided on the upper surface side of the intermediate portion of the latch bolt 20, and the lower lock member 13 is locked. 2. The device according to claim 1, wherein when pushed out to the stop position, the stopper portion is engaged with the stopper receiving portion to restrain the latch bolt in the lock position.