JP3200767B2 - Door lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door having a garment operation mechanism for holding a door slightly open in addition to an unlocking operation for opening the door and a locking operation for inhibiting the opening of the door. It relates to a lock device.

[0002]

2. Description of the Related Art In addition to locking and unlocking a door, various types of door locking devices having a garage arm operating mechanism capable of opening the door at a small interval have been proposed. The dead bolt is retracted into the device case and unlocked.
The dead halt is projected out of the device case by one step to perform gardarm operation, and the dead bolt is projected in two steps to lock.

The dead holt is projected and locked, and
The locking / unlocking mechanism for retracting and unlocking the deadbolt is widely known, but the guard-arm operating mechanism is
The dead bolt protrudes by one step due to the thumb turn operation in the door, and the notch at the tip of the dead bolt protrudes into the long hole of the garment provided in the door mounting frame.

[0004] That is, an elongated gard arm having one end rotatably mounted on the door mounting frame is mounted on the door mounting frame.
The gard arm is provided with a long hole.

Therefore, when the door is opened with the notch at the tip of the deadbolt protruding into the long hole of the gard arm, the gard arm pivots around the shaft attachment portion, and
The tip of the dead bolt is prevented from coming out of the long hole of the guard dome.

In this door opening operation, the opening interval of the door is determined according to the garment, and the length of the garment becomes the maximum opening state, and the door is not opened any more. That is, the same function as the door chain is performed.

[0007]

Door for locking devices described above THE INVENTION An object will to solve the above-key - operation or Samuta - for Deddokamu by down operation is unlocking operating rotated, locking the dead bolt is out collision in two steps In this state, the deadbolt is prevented from retreating by the dead cam, and in the unlocked state in which the deadbolt is retracted, the advancement is prevented by the deadcam.

[0008] However, moths were out one stage impact the dead bolt - door - No operation, forward and backward movement of the dead bolt is not regulated by the Deddokamu. For this reason, if the dead bolt protrudes to the two-stage position for some reason with the door opened by the garment arm operation, the dead bolt hits the door mounting frame by closing the door, and the dead bolt is raised by one stage. A disadvantage arises that the door must be closed after being retracted to the position.

In addition, the door is closed while the garment arm is operating,
If the deadbolt retreats for some reason in this closed state, there is a problem that the door can be opened with the guard arm operation function released.

In order to solve the above-mentioned problem, a guard door is provided.
Conventionally, various means have been developed to prevent the forward / backward movement of the dead bolt which may occur during the operation of the robot, but new structural problems such as a complicated structure and an increase in the number of parts have arisen. .

The present invention has been made in view of the above circumstances, and proposes a door lock device in which a means for preventing a dead bolt from moving during a garment operation can be configured using as few parts as possible. Aim.

[0012]

In order to achieve the above-mentioned object, according to the present invention, there is provided a dead bolt which is moved to each of unlocking, guarding and locking positions by a dead cam which operates according to a locking operation. In the door lock device, the dead bolt is provided with an engaging portion, and the device case has a pawl portion which can be engaged with the engaging portion by a spring force.
The provided deadbolt is moth - by moving the de position, the engagement lever - claw portion engages the engaging portion, and prevented from moving to the locked position of the dead bolt, and the engagement In the mating lever, the deadbolt is moved from the guard position to the locking position.
When moving , the interlocking portion releases the engagement of the engaging portion in conjunction with the dead cam and allows the dead bolt to move to the locking position, and the dead bolt moves from the locking position to the unlocking position.
When forming a curved surface so that it passes through the engagement portion when
A lock device for a door is provided, wherein a back portion of a nail portion is provided.

[0013]

The lock device of the present invention can perform locking / unlocking and guard-arm operation by operating a lock with a key or a thumb. Then, when the guard bolt is operated by the thumb turn operation, the dead bolt is pushed by the dead cam and moves to a one-step protruding position, and the notch at the tip of the dead bolt is inserted into the long hole of the guard bolt. storm in.

When the door is opened in this state, one end of the gar door is pivotally mounted on the door mounting frame, and the other end is pivotally supported by the tip of the dead bolt. As a result, the opening of the door is limited by the guard door, and the door can be opened by the length of the guard door.

In the above-mentioned guard operation,
Since the dead bolt moves to the guard position, the engagement lever
The claw portion spring force of engaging the engaging portion of the deadbolt. This engagement prevents the dead bolt from being pulled out.

As a result, the movement of the dead bolt toward the locking position is prevented by the engagement lever, and the retraction of the dead bolt is prevented by the dead cam. Therefore, the movement of the dead bolt during the guard arm operation is prevented. Is reliably prevented.

Further, since the interlocking portion of the engaging lever is interlocked with the locking operation of the dead cam, and the pawl portion releases the engagement of the engaging portion of the dead bolt, the dead bolt is locked during the locking operation. And the dead bolt is released from the locked position.
When moving to the lock position, the engaging part passes behind the claw
I do.

[0018]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of the lock device showing a state in which a lid is removed, and FIG. 2 is an enlarged sectional view taken along line AA in FIG.

As shown in the figure, a dead bolt 12 is mounted on a box-shaped case 11 so as to be movable in the lateral direction.
A guide pin 13 is provided on the dead bolt 12, and the guide pin 13 slidably protrudes into a guide hole 14 formed in the case 11, so that the moving direction of the dead bolt 12 is determined by the guide pin 13. It has become.

The dead bolt 12 is provided so that a small ball 16 to which a projecting force is applied by a coil spring 15 projects from a small hole having a bottom. That is, by moving the small ball 16 while pressing against the click spring plate 17, the dead bolt 12 is click-stopped at each position of unlocking, guarding and locking.

On the other hand, a notch 18 is formed at the tip of the dead bolt 12, and this notch 18 protrudes into an elongated hole of a guard arm, which will be described later. In addition, the bottom part of the above-mentioned notch 18 has an arc shape.

In the rear half of the dead bolt 12, there are provided cam pressing surfaces formed in two stages, upper and lower. The upper cam pressing surfaces 19a and 19b are pressing surfaces for moving the dead bolt 12 between the locking position and the unlocking position.
Numeral 0 is a pressing surface for moving the dead bolt 12 to the guard position.

The cam pressing surfaces 19a, 19b, 20 receive a pressing force by a dead cam 21. In other words, the dead cam 21 is the first convex
A cam 21a and an arc-shaped second cam 21b are provided. The first cam 21a pushes the cam pushing surfaces 19a and 19b, and the second cam 21b pushes the cam pushing surface 20. .

The dead cam 21 is connected to the inner cylinder of the cylinder lock and the thumb inside the door, and is driven to rotate by a key operation from outside the door or by the thumb inside the door. The spindle 22 of the dead cam 21 is provided with a square portion 22a, and the square portion 22a and the spring plate 23 to which a spring force is applied constitute a click stop mechanism, which unlocks, guards, and locks the dead cam 21. Click stop at each position of.

Further, the dead bolt 12 is provided with an engaging groove 24, and the engaging claw 25c of the engaging lever 25 protrudes into the engaging groove 24 to restrict the movement of the dead bolt 12. . As shown in the figure, the engaging lever 25 formed as a forked lever is attached to the case 11 so as to be freely rotatable by the support shaft portion 26, but the right turning force is always applied by a spring force.

In this engagement lever 25, the engagement claw 25c at the tip of the one arm 25a protrudes into the engagement groove 24 by the spring force to prevent the dead bolt 12 from moving. The engagement claw 25c is made to escape from the engagement groove 24 in conjunction with the first cam 21a.

In the lock device constructed as described above, in the unlocked state shown in FIG. 1, if the key is operated and the dead cam 21 is turned clockwise, first, the second cam 21b comes into contact with the cam pressing surface 20. The dead bolt 12 is moved in the advance direction by pressing the pressing surface 20. In this movement stage, the engaging claw 25c of the engaging lever 25 is in contact with the side surface of the dead bolt 12.

When the dead cam 21 is further rotated, the second cam 21b is disengaged from the cam pushing surface 20 as the dead bolt 12 moves, and the first cam 21a is moved to the cam pushing surface 19.
a. At this time, the engaging claw 25c of the engaging lever 25 protrudes into the engaging groove 24 by a spring force. (FIG. 3
reference)

When the rotation of the dead cam 21 is continued, the cam pushing surface 19a is pushed by the first cam 21a, and the dead bolt 12 is moved to the two-stage projecting position which is the locking position, and the locking is performed as shown in FIG. State. In this operation process, the other arm 25b of the engagement lever 25 is connected to the first cam 21.
As a result, the engagement lever 25 is turned to the left against the spring force, and the engagement claw portion 25c escapes from the engagement groove 24.

When the key is operated from the locked state shown in FIG. 4 and the dead cam 21 is turned to the left, the cam pushing surface 19b is pushed by the first cam 21a, and the dead bolt 12 moves backward. The leftward turning of the dead cam 21 is further continued and the dead bolt 12 is moved backward until the dead bolt 12 is stored in the case 11, whereby the unlocked state shown in FIG. 1 is obtained.

In the case where the dead bolt 12 is unlocked as described above, the engaging claw 25c of the engaging lever 25 is required during the backward movement of the dead bolt 12.
Project into the engagement groove 24, but the rear portion 2 of the engagement claw portion 25c
Since the curved surface 5d is formed, the engaging claw portion 25c is pushed out by the groove edge of the engaging groove 24 when the dead bolt 12 is moved backward.

In the unlocked state shown in FIG. 1, when the garment operation is performed, the dead cam 21 is turned clockwise by operating the thumb from within the door. When the dead cam 21 is turned by 45 degrees, the click is once stopped by the square portion 22a and the spring plate 23, so that the operation position of the thumb turn is the guard position.

When the dead cam 21 turns clockwise as described above, the cam pushing surface 20 is pushed by the second cam 21b, and the dead halt 12 projects to one stage as shown in FIG. When the dead bolt 12 advances in this way, the notch 18 of the dead bolt 12 has a guard arm 27 as shown in FIG.
Into the long hole 28.

At the guard position where the dead cam 21 has turned 45 degrees, the engaging claw 25c of the engaging lever 25 protrudes into the engaging groove 24 of the dead bolt 12, as shown in FIG. For this reason, if the dead bolt 12 is to be pulled out carelessly, the engaging claw 25c of the engaging lever 25 is engaged with the engaging groove 2c.
4 to prevent the dead bolt 12 from advancing.

Further, since the dead bolt 12 which has entered the first stage as described above comes into contact with the first cam 21a, the dead surface of the dead bolt 12 does not inadvertently move backward.

On the other hand, as shown in FIG.
A gard arm 27 having one end mounted on a door mounting frame so as to be rotatable by a support shaft 29 is mounted, and an elongated hole 28 is formed in the lower half of the gar door dome 27. . Therefore, if the door is opened with the notch 18 of the dead bolt 12 protruding into the long hole 28 of the garment arm 27,
As shown by the chain line in FIG.
Is pivoted on the fulcrum to advance the door opening, whereby the notch 18 at the end of the dead bolt 12 abuts on the end of the long hole 28.
Therefore, the guard cannot be opened any further.
The door operation is performed.

When the door is closed in the garment operating state, the card arm 27 returns to the position shown by the solid line in FIG. 5, and the thumb bolt is operated in this state to cause the dead bolt 12 to protrude to two stages. When the dead bolt 12 is retracted, the unlocked state shown in FIG. 1 is obtained. Naturally, a bolt receiving hole is provided in the door mounting frame, and the dead bolt 12 protruding up to two stages enters the bolt receiving hole to be locked.

When the guard arm is operated from the locked state shown in FIG. 4, the dead cam 21 is turned to the left by 45 degrees by operating the thumb turn. Since the left turn causes the dead bolt 12 to move backward to the position shown in FIG. 3, the guard arm operation can be performed in the same manner as described above.

[0039]

As described above, in the door lock device according to the present invention, the means for preventing the dead bolt from moving during the garment operation is provided with the engaging portion provided on the dead bolt and the engaging portion provided on the engaging portion. Since it can be constituted by a single engaging lever having an engageable claw portion, the structure of the movement preventing means is simplified, and the locking device can be constituted with a minimum number of parts.

[Brief description of the drawings]

FIG. 1 is a front view of a lock device according to an embodiment of the present invention, in which a lid is removed and an internal structure is illustrated.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

FIG. 3 is a front view similar to FIG. 1, showing a garment operation.

FIG. 4 is a front view similar to FIG. 1, showing a locking operation.

FIG. 5 is a front view showing an example of a garment mounted on a door mounting frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Case 12 Dead halt 18 Notch 19a, 19b, 20 Cam pushing surface 21 Dead cam 21a First cam 21b Second cam 24 Engaging groove 25 Engaging lever 25b Another arm 25c forming an interlocking part 25c Engaging claw 27 Gard Arm 28 Long Hole

Claims (1)

(57) [Claims] 1. A door lock device provided with a dead bolt which moves to each of unlocking, guarding and locking positions by a dead cam operated in response to a locking operation, wherein said dead bolt is provided with an engaging portion. At the same time, the device case is provided with an engaging lever having a claw portion capable of engaging with the engaging portion by a spring force, and the dead bolt moves to the guard position,
The engagement lever - claw portion engages the engaging portion, and prevented from moving to the locked position of the dead bolt, and the engagement lever - in the dead bolt moth - locked position from de position Move to
Interlocking unit in conjunction with the Deddokamu allows movement of the locking position of the release to deadbolt the engagement of the engaging portion when
When the dead bolt moves from the locked position to the unlocked position
The claw having a curved surface so as to allow the engagement portion to pass therethrough
And a rear part of the door.