JP2002250160A - Disengagement mechanism of stopper for lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve reduction of manufacturing cost by reducing the number of parts and simplifying the forms of constitution members. SOLUTION: The disengaging mechanism of the stopper for the lock has such a characteristic that it is comprised of a tumbler 20, which is installed inside a lock case 5, and a tumbler driving spring 40, of which one end part is mounted to a driving arm 23 of the tumbler, while, the other end part is mounted to a fixed shaft 41 provided horizontally to the lock case 5, and when the tumbler 20 is rotated in the unlocking direction, the central part 40 of the tumbler driving spring 40, which moves following to the movement of the driving arm 23 of the tumbler, is moved in the direction to press a stopper piece 50 for a deadbolt 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock release mechanism for a lock of an opening / closing door, and more particularly to a lock release mechanism for releasing a lock for releasing a lock of a dead bolt.

[0002]

2. Description of the Related Art Conventionally, a lock engagement release mechanism Z for a lock is known.
As shown in FIG. 6, 1 is a darma 60, a stopper member push-down member 61, a pivot pin 62 for supporting the base of the push-down member 61 on a drive arm of the darma 60, and a long rod of the push-down member 61. And a coil spring 63 wound around the portion. The dharma 60 further includes a first dharma component 60a on the sumter side and a second dharma component 60b on the cylinder side that is combined therewith.
Therefore, the stopper engagement release mechanism Z1 is composed of a total of "five parts" including the constituent pieces of the dharma 60.

FIG. 7 shows a state in which "five parts" constituting the stopper engagement release mechanism Z1 are incorporated in the lock case 5A. Main constituent members will be briefly described with reference to the schematic explanatory diagram. 30A is a dead bolt, 50A is a stopper piece, and 41A is a fixed shaft provided horizontally on the lock case 5A. The push-down member 61 that constitutes the stopper engagement release mechanism Z1 is formed in a ten-handed shape, and the upper end is pivotally supported by the drive arm 23A of the dharma 60 via the pivot pin 62. The long rod portion 61a of the pressing member 61 passes through a through hole 65 formed in the fixed shaft 41A, and
The stopper piece 50A enters the long window 66 formed on the upper wall.

[0004] The operation of the stopper engagement release mechanism Z1 in the above configuration will be described. As shown in FIG. 7, when the dead bolt 30 </ b> A is pushed out by the drive arm 23 </ b> A of the damar 60 (locked state) and the darma 60 is rotated in the counterclockwise (unlocked) direction by the thumb-turn operation, the push-down member 61 is pressed. As the long rod portion 61a passes through the through hole 65 of the fixed shaft 41A, the coil spring 63 contracts, and at the same time, the short rod portion 61b of the push-down member 61 pushes the stopper piece 50A against the spring force of the return spring 54A. And push down. Therefore, since the dead bolt 30A is released from the stopper piece 50A, it retracts into the lock case 5A.

[0005]

However, the conventional stopper engagement release mechanism Z1 has a problem in that the number of constituent parts is large. Further, the pressing member 6 is formed in a ten-handed shape, and the pressing member 6 is attached to the fixed shaft 41A.
In addition, it is necessary to form a guide hole for guiding the components, and a guide window is also formed in the stopper piece 50A. As a result, the configuration of each component becomes complicated, and the combination cannot be easily performed. There were also points. Accordingly, the present invention has been made in view of the above-described conventional problems, and achieves a reduction in manufacturing cost and / or an increase in efficiency of assembly work by reducing the number of parts and simplifying the form of constituent members. Aim.

[0006]

According to the present invention, there is provided a lock stopper disengaging mechanism for a lock, which comprises
And one end is attached to the drive arm 23 of the dharma,
On the other hand, the other end comprises a dharma drive spring 40 attached to a fixed shaft 41 provided horizontally on the lock case 5, and when the damul 20 is rotated in the unlocking direction, it follows the movement of the dharma drive arm 23. Central portion 40c of the dharma drive spring 40
Moves in a direction of pressing the stopper piece 50 for the dead bolt 30.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in FIGS.

(1) Environment and Principal Components of the Embodiment of the Invention First, the environment and main components of the embodiment of the invention will be briefly described with reference to FIG. X is a sculpture type that is housed in the door 1 or a lock that is fixedly attached to the inner wall surface of the door. On the other hand, Y is a receiving bracket fixedly attached to the door frame 2. The engagement hole 3 of the receiving member Y is formed in a vertically long shape so that not only a dead bolt described later but also a latch bolt (not shown) provided on the lock X is inserted therein. The main members of the stopper disengaging mechanism Z of the present invention include a darma 20 housed in a lock case, and one end attached to a driving arm 23 of the darma, and a stopper for the deadbolt 30 by the driving force of the darma. Dharma drive spring 40 for releasing the locking state of piece 50.

(2) Lock Case The lock case will be described with reference to FIG. 5 is a door 1
Is a lock case attached to the inner wall surface. The lock case 5 includes a frame-shaped case body 5a and a plate-shaped case lid 5b that closes one side opening of the case body. FIG. 1 mainly shows constituent members necessary for specific requirements of the present invention. Therefore, a latch bolt, a latch spring, and the like provided below the dead bolt are omitted. Reference numeral 6 denotes a front fixed to the front opening 7 of the lock case 5.
The front 6 is generally fixed to a long cover plate or a front wall 8 of the lock case 5. Reference numeral 9 denotes a fixing tool for fixing the lock case 5 to the door 1. Here, a description will be given of the walls of the lock case 5 (the case body 5a) with reference numerals for convenience. 10 is a bottom wall, 11 is a rear wall, 12 is a top wall,
13 is a wide side wall with respect to one side opening. Also 15
Reference numeral 16 denotes a fitting hole for mounting an operation member formed at a position near the rear wall 11 on the upper portion of the wide side wall, and 16 denotes a portion near the center of the wide side wall 13 and a portion below the fitting hole 15. The formed horizontal guide portion (a horizontal guide slot in this embodiment).

(3) Dharma The dharma 20 housed in the lock case 5 is rotatably provided in a seat member 21 fixedly fitted in the fitting hole 15 described above. As is well known, the dharma 20 is rotated by operating a key or a thumb turn to control the entry and exit of the deadbolt. For this purpose, the dharma 20 is composed of a drum-shaped fitting portion 22 fitted to the seat member 21 as shown in FIG. 3 and a driving arm 23 extending radially from the center of the peripheral wall of the fitting portion 22. Become. A shaft hole 24 for a darma shaft (not shown) is formed at the center of the fitting portion 22, and a small mounting hole 26 for a spring support 25 is formed at the tip of the driving arm 23. The spring support 2
5 is formed in the shape of a thumbtack, and when inserted and fixed in the mounting hole 26, one end of the dharma drive spring is supported by the head 25a.

(4) Dead Bolt The dead bolt 30 is provided at a substantially central portion of the lock case 5 via a guide so as to be able to move forward and backward. Therefore, the configuration of the dead bolt 30 will be described with reference to FIG. 1 or FIG.
Reference numeral 31 denotes a block-shaped engaging head guided to the front opening 7 of the front 6, and the side wall of the engaging head 31 is square or rectangular. Reference numeral 32 denotes a plate-shaped body extending horizontally from one side of the rear end of the engaging head 31, and upper and lower ends of the plate-shaped body are formed by bending at right angles in an appropriate direction. The department is
In relation to the tip of the stopper piece described later, the engagement wall 3
It is three. Therefore, when a part of the plate-shaped body portion 32 is formed in a cross section, it becomes a U-shaped shape. Reference numeral 34 denotes a plate-shaped engaging leg connected to the plate-shaped body, and a lower portion of the plate-shaped engaging leg 34 is notched 35 in a horizontal direction to a rear end surface thereof. On the other hand, a first engagement portion 36 and a second engagement portion 37 having a shape such that the thumb and the index finger face upward are formed above the plate-like engagement leg portion 34 so as to face each other. The rising first engagement portion 36 and the second engagement portion 37 are formed on the engagement inclined surfaces 36a, 3 to which the cam-like drive arms 23 of the dharma 20 alternately contact.
7a. Further, a slide pin 38 that engages with the horizontal guide portion 16 of the lock case 5 is protruded from a side wall surface of the plate-like engagement leg portion 34.

(5) Dharma Driving Spring As shown in FIG. 3, the Dharma driving spring 40 employs a "-" shaped eyeglass spring in order to remind the user of a click feeling. As described above, one end 40a of the dharma drive spring 40 is supported by the spring support 25 of the dharma 20, while the other end 40b is supported by the fixed shaft 41 which is horizontally mounted on the lock case. Accordingly, the central portion 40c of the dharma drive spring 40 moves following the movement of the dharma drive arm 23, and can be expanded or contracted.

(6) Stopper Piece The stopper piece 50 is supported by the lock case 5 via a support shaft 51. When the dead bolt 30 is in the locked state as shown in FIG. 1, the stopper piece 50 is engaged with the above-mentioned engaging wall 33 to prevent the dead bolt 30 from retreating. In the embodiment, it is arranged in the form of an index finger below the fixed shaft 41 or below the engaging leg 34 of the dead bolt 30. Thus, the stopper piece 50 is formed in the end face channel, and has a plate-shaped contact portion 52 on the upper wall in an oblique direction. The central portion 40c of the dharma drive spring 40 described above can contact the contact portion 52. Reference numeral 54 denotes a return spring wound around the support shaft 51 passing through the shaft hole 53 of the stopper piece 50 and returning the stopper piece 50 in a direction to engage with the dead bolt 30.

The operation of the stopper engagement release mechanism Z in the above configuration will be described with reference to FIGS. 1, 4, and 5. FIG. 1 shows a locked state in which the dead bolt 30 protrudes. In this case, the deadbolt 30 is the drive arm 2 of the damal 20.
3 and is locked to the distal end portion 50a of the stopper piece 50. The central portion 40c of the dharma drive spring 40 is in contact with the contact portion 52 of the stopper piece 50, or approaches as if it were in contact therewith.

FIG. 4 shows that the dharma 20 rotates counterclockwise by, for example, a thumb-turn operation, and the dharma drive spring 40 contracts following the rotation.
Protrudes toward the contact portion 52 and pushes down the stopper piece 50 via the contact portion 52. That is, in this embodiment, when the dharma 20 rotates in the unlocking direction, the central portion 40a of the dharma drive spring 40 presses the stopper piece 50 in the direction of disengagement. For this purpose, the stopper piece 5
0 rotates counterclockwise against the spring force of the return spring 54, and its tip 50 a is engaged with the engagement wall 33 of the dead bolt 30.
Move away from Therefore, the dead bolt 30 can be retracted. FIG. 5 shows a case where the dharma 20 is further rotated in the unlocking direction, and is in an unlocked state. At this time, the dead bolt 30 is connected to the drive arm 2 of the dharma 20 via the second engagement portion 37.
Retreat by 3 The darma drive spring 40 is connected to the drive arm 2.
3, the central portion 40c moves upward and separates from the contact portion 52. Therefore, the stopper piece 50 is returned by the return spring 54. However, the stopper piece 50 does not engage with the dead bolt 30, and its tip end 50 a comes into contact with the lower surface of the engagement wall 33.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The design of the dharma drive spring 40 can be changed to a leaf spring as long as the stopper piece 50 can be pushed down.
The upper wall of the stopper piece 50 has a Dharma driving spring 40.
A plate-shaped contact portion 52 is formed to be pressed down at the central portion 40c of the contact member, but the contact portion 52 may be a protrusion. Further, regarding the form of the dead bolt 30, the central part thereof moves while the darma drive spring 40 expands or contracts and displaces along the inner wall surface of the engaging leg 34 of the dead bolt 30, so that the rear end side is a plate. It is desirable to form it.

[0017]

As is apparent from the above description, according to the present invention, the manufacturing cost can be reduced by reducing the number of parts and simplifying the form of the constituent members.

[Brief description of the drawings]

1 to 5 are explanatory views showing one embodiment of the present invention. FIG.
And FIG. 7 are explanatory diagrams showing a conventional embodiment.

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

FIG. 2 is a perspective view of a dead bolt.

FIG. 3 is an exploded perspective view of a main member.

FIG. 4 is a schematic explanatory view of a state in which engagement of a stopper piece is released.

FIG. 5 is an explanatory diagram of an unlocked state.

FIG. 6 is an exploded perspective view of a conventional main member.

FIG. 7 is a schematic explanatory view showing an example of a conventional embodiment (locked state).

[Explanation of symbols]

X: lock, Y: receiving bracket, Z: stopper engagement release mechanism, 1: opening / closing door, 2: door frame, 3: engaging hole, 5: lock case, 6: front, 20: dharma, 21: seat Member, 2
3 ... drive arm, 25 ... spring support, 30 ... dead bolt,
31: engagement head, 40: dharma drive spring, 40a: one end, 40b: other end, 40c: center, 41: fixed shaft,
50: stopper piece, 50a: tip, 51: support shaft, 5
2. Contact part, 53 ... shaft hole, 54 ... return spring.

Claims (3)

[Claims] 1. A dharma 20 housed in a lock case 5;
One end is attached to the drive arm 23 of the dharma, while the other end is comprised of a dharma drive spring 40 attached to a fixed shaft 41 laid sideways on the lock case 5 to move the damar 20 in the unlocking direction. A lock engagement with a lock, wherein when rotated, a central portion 40c of the dharma drive spring 40, which follows the movement of the dharma drive arm 23, moves in a direction of pressing the stopper piece 50 for the dead bolt 30. Release mechanism. 2. The dharma drive spring 40 according to claim 1, wherein
Is an eyeglass spring that expands or contracts and displaces outwardly. 3. The lock locker according to claim 1, wherein a contact portion 52 which is pushed down by a central portion 40c of the dharma drive spring 40 protrudes from a wall of the stopper piece 50. Unlock mechanism.