WO2016068304A1

WO2016068304A1 - Locking device

Info

Publication number: WO2016068304A1
Application number: PCT/JP2015/080780
Authority: WO
Inventors: 清文佐藤; 真太郎片山
Original assignee: 株式会社アルファ
Priority date: 2014-10-30
Filing date: 2015-10-30
Publication date: 2016-05-06
Also published as: JP6577179B2; JP2016089370A; CN107109866B; CN107109866A; KR20170076689A

Abstract

A locking device has a deadbolt, a latch bolt, a trigger, and a stopper driving unit. The stopper driving unit transmits relative projection displacement of the latch bolt with respect to the trigger as engagement release displacement of a dead stop with the deadbolt. After driving the release of the dead stop engagement, the stopper driving unit cancels the transmission of the dead stop operating power by way of the relative displacement of the latch bolt with respect to the trigger until the latch bolt and the trigger are simultaneously retracted again.

Description

Locking device

The present invention relates to a locking device.

Patent Document 1 discloses a locking device that automatically shifts to a locked state when the door is closed.

In the lock device of Patent Document 1, the dead bolt, the latch, and the trigger are accommodated in the case. The dead bolt is urged in the protruding direction by the lever. The protrusion of the dead bolt is restricted by the hook, and the dead bolt is held in the unlocked state.

The latch and trigger are each urged in the protruding direction by a compression spring. A dead bolt trigger is rotatably connected to the latch holder that advances and retracts together with the latch with its free end pressed against the trigger.

¡Latch and trigger move to the retracted position as the door is closed. Thereafter, only the latch that matches the strike hole moves in the protruding direction. The pressure contact state with the trigger of the dead bolt trigger is released, and the dead bolt trigger rotates. Due to the rotation of the dead bolt trigger, the hook is released from the locked state, and the dead bolt shifts to the locked state. This completes the locking operation.

The transition from the locked state to the unlocked state is performed by operating the lever handle. When the lever handle is rotated, the dead bolt and the latch are retracted.

In the locking device of Patent Document 1, the unlocking operation is performed by simultaneously driving a dead bolt and a latch.

For this reason, when the dead bolt and the latch are retracted into the door to shift to the unlocked state, either the dead bolt or the latch or both of them are pressed against the peripheral wall of the strike hole of the door frame. Pressure is generated. The back pressure increases the sliding resistance between the dead bolt or latch and the strike hole periphery. Of course, when the deadbolt is in pressure contact with the strike hole in the locked state, even if the latch is in contact, the deadbolt is pressed against the periphery of the strike hole after the latch is released from the strike hole. . For this reason, sliding resistance is generated in the entire stroke until the dead bolt is released from the strike hole. As a result, the unlocking operation becomes difficult. In particular, when the unlocking operation is performed by an actuator such as a motor, a malfunction may occur.

Also, in the locking device of Patent Document 1, it is possible to configure the latch to be operated independently from the outside. However, in the locking device of Patent Document 1, since the protruding operation of the latch with respect to the trigger in the unlocked state is a condition for shifting to the locked state, when only the latch can be freely operated, the door is unlocked and the door is opened. The latch protrudes with respect to the trigger only by pushing only the trigger in the state. As a result, the deadbolt protrudes, which is inconvenient.

Further, in the locking device of Patent Document 1, when the latch is configured to be operated independently from the outside, the deadbolt is locked again by performing the retracting and protruding operations of the latch without performing the opening operation in the closed state. It becomes impossible to open the door and it is very inconvenient.

Japanese Patent Laid-Open No. 03-172473

According to the embodiment of the present invention, a locking device with good operability is provided.

According to the embodiment of the present invention, the locking device is urged in the direction of the locking position to be locked in the dead bolt strike hole 2 of the door frame 1, and the dead stopper 3 is locked by the unlocking operation to the unlocked position. In the closed state, the deadbolt 4 to be held is elastically locked in the latch strike hole 5 of the door frame 1, and in the locked state with the latch strike hole 5, the advancing / retreating path of the deadbolt 4 and the deadbolt strike hole 2 A latch bolt 6 that can be retracted from outside the door to secure an appropriate movement clearance therebetween, a trigger 7 that is pressed against the door frame 1 in the closed state and held in the retracted position, the latch bolt 6, and the trigger 7 The relative displacement of the latch bolt 6 with respect to the trigger 7 by the simultaneous movement from the projecting position to the retracted position is defined as the disengagement displacement of the dead stopper 3 from the dead bolt 4. The stopper driving unit that transmits the operation force of the dead stopper 3 due to the relative displacement of the latch bolt 6 with respect to the trigger 7 until the simultaneous simultaneous retracting operation of the latch bolt 6 and the trigger 7 after the latch stopper 6 is driven to release the latch. 8 and.

FIG. 1 shows the internal structure of the lock device. FIG. 2 is a view of the locking device as viewed from the opposite side. FIG. 3A is a plan view of the lock device. FIG. 3B is a front view of the lock device. FIG. 3C is a bottom view of the lock device. FIG. 4 is an exploded perspective view of the lock device. FIG. 5 is a view corresponding to FIG. 1 in a state where the latch bolt and the trigger are retracted. 6A and 6B are diagrams illustrating the operation of the stopper driving unit. FIG. 6A is a diagram illustrating the state of FIG. FIG. 6B is a diagram illustrating the state of FIG. Fig.7 (a) and FIG.7 (b) are figures which show operation | movement of a locking device. Fig.7 (a) is a figure which shows the state which the latch bolt moved to the protrusion direction. FIG.7 (b) is a figure which shows the state after automatic locking. FIG. 8A and FIG. 8B are diagrams illustrating the operation of the stopper driving unit. FIG. 8A is a diagram showing the state of FIG. FIG. 8B is a diagram illustrating the state of FIG. Fig.9 (a) and FIG.9 (b) are figures which show operation | movement of a locking device. FIG. 9A shows an unlocked state. FIG. 9B is a diagram illustrating a door opening operation state. FIG. 10A and FIG. 10B are diagrams illustrating the operation of the stopper driving unit. Fig.10 (a) is a figure which shows the state of Fig.9 (a). FIG.10 (b) is a figure which shows the state of FIG.9 (b). FIG. 11A to FIG. 11D are diagrams illustrating the operation of the stopper driving unit. FIG. 11A is a diagram illustrating an initial stage of the degeneration operation when the degeneration amounts of the latch bolt and the trigger are different. FIG.11 (b) is a figure which shows the interference state of an operation protrusion and a to-be-pressed piece. FIG. 11C is a diagram illustrating the interference elimination operation. FIG. 11 (d) is an enlarged view of the main part of FIG. 11 (c).

Hereinafter, embodiments will be described with reference to the accompanying drawings. The accompanying drawings and the following disclosure are examples of the present disclosure, and are not intended to limit the subject matter described in the claims.

As shown in FIG. 1 and subsequent figures, the locking device has a dead bolt 4, a latch bolt 6, and a trigger 7 that are accommodated in the case 16. Each of the dead bolt 4, the latch bolt 6, and the trigger 7 can move between a protruding position protruding from the front plate 17 fixed to the front surface of the case 16 and a retracted position accommodated in the case 16. .

The dead bolt 4 is a plate-like body formed in an elongated rectangular shape, and has a front end portion (hereinafter referred to as “front” on the left side in FIG. The door can be locked by locking the vertical direction on the paper surface to “side” in the dead bolt strike hole 2 formed in the door frame 1 (see FIG. 7B).

A sickle member 18 is rotatably connected to the front end portion of the dead bolt 4 to lock the dead bolt strike hole 2 in the locked state and prevent the dead bolt 4 from being pulled out.

In order to drive the dead bolt 4 to the unlocking position, a dead drive lever 19 having a slider abutting arm 19a and a dead abutting arm 19b at both ends of the case 16 rotates with the middle portion pivotally supported by the case 16 Connected freely.

As shown in FIG. 2, the dead drive lever 19 is formed with a click projection 19c. The plate spring 20 fixed to the case 16 and the unlocking rotation position shown in FIG. 2 and FIG. Stop moderation at the locking rotation position.

In the unlocked state shown in FIG. 1, the dead contact arm 19b of the dead drive lever 19 is in contact with the unlocking contact portion 4a formed on the dead bolt 4. From this state, the dead drive lever 19 is moved to FIG. 7 (b), the dead drive lever 19 is rotated to the locking rotation position, and the dead contact arm 19b of the dead drive lever 19 is used to lock the dead bolt 4. As shown in FIG. The contact portion 4b is pressed, and the dead bolt 4 is moved in the lock position direction.

In the locked state, a stopper lever 21 is locked to the dead bolt 4 so that an external force in the retracting direction is applied to prevent the dead bolt 4 from being improperly moved to the unlocked position.

The unlocking of the locking device is performed by rotating the dead drive lever 19 counterclockwise from the state of FIG. 7B, and in the locking direction with the dead bolt 4 as the dead drive lever 19 rotates. The urged stopper lever 21 is moved to the unlocking position against the urging force of the torsion spring 21a (see FIG. 4) by the stopper control rod 22 rotatably connected to the dead drive lever 19, and then dead. The abutting arm 19b presses the unlocking contact portion 4b of the dead bolt 4 to move the dead bolt 4 to the unlocked position.

In order to perform the unlocking operation by operating the dead drive lever 19, the dead drive lever 19 includes a cylinder lock (not shown) disposed outside the door, and a thumb turn device (not shown) on the indoor side. Are concatenated.

In order to operate the dead drive lever 19, a lever drive slider 23 is disposed in the case 16. The lever drive slider 23 is movable in the front-rear direction between the unlocking corresponding position and the locking corresponding position. When the lever driving slider 23 moves from the unlocking corresponding position shown in FIG. 1 to the locking corresponding position shown in FIG. The slider abutting arm 19a of the drive lever 19 is pushed backward to rotate to the moderation rotation position on the locking side, and the dead bolt 4 moves to the locking position.

As shown in FIGS. 1 and 2, the lever drive slider 23 is urged rearward by the compression spring 23 a, that is, toward the locking corresponding position, and the front position (unlocking is supported) by locking the dead stopper 3. Position). Note that. In FIG. 2, reference numeral 23 b denotes a locking step formed on the lever drive slider 23 for locking the dead stopper 3.

The dead stopper 3 is formed by fixing a stopper block 24 a made of synthetic resin to the upper end of the stopper plate 24. As shown in FIG. 2, the dead stopper 3 is mounted so as to be movable in the vertical direction by applying an upward biasing force by a torsion spring 25, and the stopper block 24 a is attached to the lever driving slider 23 in accordance with the vertical driving. Engage / disengage with the locking step 23b.

Further, the stopper plate 24 of the dead stopper 3 is provided with a stopper projection 24b that is engaged with a stopper step portion 26 provided on the case 16 to determine the end of the engagement side stroke (FIGS. 2 and 6). a)).

Furthermore, the pressed piece 13 is bent toward the side at the lower end of the dead stopper 3.

On the other hand, the latch bolt 6 has a triangular prism-shaped latch block portion 6a at the front end, and is urged forward by the compression spring 27 so as to be movable forward and backward. As shown in FIG. 3, the latch bolt 6 moves in the direction of the arrow (C) in FIG. 3 (a) in accordance with the door closing operation and comes into contact with the door frame 1, and then is applied by the component force generated on the slope 6b. It once degenerates against the power. Thereafter, the door closing operation is further continued, and the latch block portion 6a returns to the protruding position by the restoring force of the compression spring 27 when the latch block portion 6a is directly facing the latch strike hole 5, that is, the door is closed, and the latch strike hole 5 is elastically released. In the locked state, the vertical surface 6c abuts on the latch strike hole 5 and the door opening operation is restricted.

As shown in FIG. 3 (b), the latch block 6 a has a width direction dimension (W 6) that is larger than the width direction dimension (W 4) of the dead bolt 4, and the latch strike hole 5 In the locked state, an appropriate clearance is secured between the side surface of the dead bolt 4 and the side of the dead strike.

Further, a latch case 14 that is relatively movable along the advancing and retreating direction of the latch bolt 6 is attached to the latch bolt 6 by being urged rearward by a compression spring 28. The latch case 14 is restricted from moving backward relative to the latch bolt 6 by a retaining ring 29 fixed to the latch bolt 6.

Further, a flange 6d is provided at the rear end portion of the latch bolt 6, and the arm 30a of the cam member 30 that can be rotated vertically is locked. A handle (not shown) arranged so as to be vertically rotatable is connected to the cam member 30 so that the latch bolt 6 can be retracted against the urging force of the compression spring 27 by operating the handle. can do.

The trigger 7 has a triangular prism portion 7a at the front end and an operating projection 12 that bulges upward at the rear end portion, and is disposed below the latch bolt 6 so as to be movable back and forth. The trigger 7 is urged forward by a spring 31 and is pushed by the door frame 1 and held in the retracted position during the closing operation.

The clutch case 10 is rotatably connected to the latch case 14, and the clutch piece 10, the operating protrusion 12 of the trigger 7, the dead stopper 3, and the lever driving slider 23 constitute a stopper driving portion 8.

The clutch piece 10 is a sheet metal member in which a pushing portion 9 is bent at a front end portion and a follower portion 11 is bent at a rear end portion with respect to a rotation center (C10) to the latch case 14, and a torsion spring 32 in FIG. It is energized clockwise.

As shown in FIG. 6A, when the door is opened and the latch bolt 6 and the trigger 7 are in the protruding position, the clutch piece 10 positions the follower portion 11 at the rear end edge of the operating protrusion 12 of the trigger 7. The pushing portion 9 is positioned higher than the surface (S13) obtained by extending the upper surface of the pressed piece 13 of the dead stopper 3 forward (initial position).

FIG. 6A shows the operation of the stopper drive unit 8 in the state of FIG. 1, that is, when the latch bolt 6 and the trigger 7 are in the protruding state and the dead bolt 4 is in the unlocked position. When the pushing portion 9 is in the initial position, the dead stopper 3 biased upward is held in the locking position by locking the stopper projection 24b with the stopper step portion 26. In this state, the lever driving slider 23 urged rearward (left side in FIG. 6A) is restricted in movement by the dead stopper 3 and is held in the unlocked position.

Thereafter, when the door closing operation is performed, the latch bolt 6 and the trigger 7 interfere with the door frame 1 and move to the retracted position as shown in FIGS. 5 and 6B, and the clutch piece 10 is in the initial position. Move backwards while maintaining the posture. By the movement of the clutch piece 10, the pushing portion 9 of the clutch piece 10 moves above the pressed piece 13 of the dead stopper 3 (starting point of contact path).

Next, when the closing operation is completed, the latch bolt 6 faces the latch strike hole 5 of the door frame 1, so that only the latch bolt 6 moves to the protruding position. As shown in FIGS. 7A and 8A, the follower portion 11 of the clutch piece 10 rides on the operating protrusion 12 of the trigger 7 and rotates by the single protruding operation of the latch bolt 6.

The pressed piece 13 is pushed down by the rotation of the clutch piece 10, the dead stopper 3 moves downward, and the locking with the locking step 23 b of the lever driving slider 23 is released. As a result, as shown in FIGS. 7B and 8B, the lever drive slider 23 is moved rearward by the urging force of the compression spring 23a, and the dead drive lever 19 is rotated to the locking rotation position. 4 moves to the locking position.

As shown in FIG. 8 (b), the operation protrusion 12 of the trigger 7, after the unlocking operation of the dead stopper 3 by the pushing portion 9 of the clutch piece 10 is completed as shown in FIG. The latch bolt 6 is extended forward so as to maintain the rotation posture of the latch piece even when the latch bolt 6 has completely shifted to the projecting state, and the front end edge of the pressed piece 13 of the dead stopper 3 is fully Since the pushing portion 9 is set in front of the position in the front-rear direction of the pushing portion 9 as shown in FIG. 8 (b), the pushing portion 9 is pressed with the latch bolt 6 fully protruding. It is located below the extended line (R13) on the back surface of the piece 13 (the end point of the contact route, the start point of the disconnection route).

The unlocking operation from the above locked state is performed by operating the dead drive lever 19 from the outside of the door. When the dead drive lever 19 is rotated, the lever drive slider 23 moves forward (on the right side in FIG. 8B), and the dead stopper 3 is temporarily lowered against the urging force of the torsion spring 25 by the locking step 23b. Then, the lever drive slider 23 is held at the unlocking corresponding position.

As described above, the latch bolt 6 is locked to the latch strike hole 5 in the locked state, and a clearance for operation is ensured between the dead bolt 4 and the dead bolt strike hole 2. As a result, the dead bolt 4 can operate smoothly without generating sliding resistance with the edge of the dead bolt strike hole 2 due to back pressure.

The door opening operation after unlocking is performed by rotating the cam member 30 using the handle and moving the latch bolt 6 to the retracted position, as shown in FIG. 9B. As shown in FIG. 10B, when the latch bolt 6 moves in the retracting direction, the pushing portion 9 moves along the back surface of the pressed piece 13 without going back to the contact path. Even if the latch bolt 6 protrudes relative to the trigger 7 by protruding 6, the state shown in FIG. 8A does not occur and the automatic locking operation is not performed.

When the opening operation is performed after the latch bolt 6 is retracted as described above, both the latch bolt 6 and the trigger 7 are moved to the protruding position, and accordingly, the pushing portion 9 of the clutch piece 10 is moved. Returns to the initial position shown in FIG.

As described above, since the pushing portion 9 is positioned above the extension line (S13) on the upper surface of the pressed piece 13 at the initial position, only the trigger 7 is moved in a retracted state in this state, and the latch bolt 6 is moved. Even in a state of protruding relative to the trigger 7, the automatic locking operation is not performed.

Furthermore, as shown in FIG. 11A, when the door frame 1 has irregularities and the like, and the amount of degeneration of the trigger 7 is larger than that of the latch bolt 6 during the closing operation, the clutch piece 10 is driven to rotate slightly. When (δ) takes a specific value by chance, the pushing portion 9 and the pressed piece 13 may have the same height.

If both the latch bolt 6 and the trigger 7 move in the retracting direction in this state, the pushing portion 9 and the pressed piece 13 interfere with each other as shown in FIG. In order to solve this problem, the latch bolt 6 and the clutch piece 10 are provided with a guide portion 15.

That is, as shown in FIG. 11B, when the interference between the pushing portion 9 and the pressed piece 13 occurs, when the latch bolt 6 is retracted from the outside of the door, the latch case 14 cannot move due to the interference. On the other hand, the latch bolt 6 moves in the retracting direction against the reaction force of the compression spring 28, and eventually the guide portion 15 of the latch bolt 6 is replaced with the guide portion 15 of the clutch piece 10 as shown in FIG. Abut.

When the latch bolt 6 is further retracted from this state, the clutch piece 10 rotates clockwise around the center of rotation (C10) in FIG. 11 (c), so that the interference state is released and the door closing operation becomes possible. . In this case, the guide slopes 33 can be provided on both the pushing portion 9 and the pressed piece 13 so that the clockwise rotation of the clutch piece 10 can be easily performed.

Furthermore, in this example, the locking device incorporates an automatic locking operation canceling mechanism. The cancel mechanism is fixed to the case 16 by a mounting plate 34 (see FIG. 4) so as to be rotatable, and is formed by a cancel operation member 35 that is arranged with the rotation operation portion 35a exposed from the front plate 17 (FIG. 1, FIG. 1). 4).

When the cancel operation member 35 is rotated, the cancel stopper 35b (see FIG. 1) is locked to the lever drive slider 23. Thereafter, the lever drive slider 23 is held at the unlocking position regardless of whether the dead stopper 3 is engaged or disengaged. Therefore, the automatic locking operation does not occur.

In the above, the case where the latch bolt 6 is provided with the latch block portion 6a at the tip and is formed in an integral bowl shape as a whole is shown. However, the present invention is not limited to this. For example, the latch block portion 6a rotates horizontally. It can also be configured as a so-called inverting latch possible.

According to the embodiment, the locking device is urged in the direction of the locking position for locking the dead bolt strike hole 2 of the door frame 1, and the dead stopper 3 is locked by the unlocking operation to be held in the unlocking position. The dead bolt 4 is elastically locked to the latch strike hole 5 of the door frame 1 in the closed state, and appropriately between the dead bolt 4 advance / retreat path and the dead bolt strike hole 2 in the locked state with the latch strike hole 5. Latch bolt 6 that can be retracted from the outside of the door to secure a moving clearance, trigger 7 that is pressed against the door frame 1 in the closed state and held in the retracted position, latch bolt 6, and protruding position of the trigger 7 The relative displacement of the latch bolt 6 relative to the trigger 7 is transmitted as the disengagement displacement of the dead stopper 3 from the dead bolt 4 by simultaneous movement from the position to the retracted position. A stopper driving unit 8 for releasing the operating force of the dead stopper 3 due to the relative displacement of the latch bolt 6 with respect to the trigger 7 after the dead stopper 3 is unlocked until the simultaneous simultaneous operation of the latch bolt 6 and the trigger 7 is performed again. Have.

In the locking device of the embodiment, in a state where the door is opened, the dead bolt 4 biased in the locking direction is held in the unlocked position by being locked to the dead stopper 3, and the latch biased in the protruding direction. The bolt 6 and the trigger 7 are held in a protruding state.

When the door is closed from this state, the latch bolt 6 and the trigger 7 abut against the door frame 1 and simultaneously move to the retracted position, and the door moves until the latch bolt 6 matches the latch strike hole 5 of the door frame 1. Only the latch bolt 6 moves to the protruding position and enters the latch strike hole 5.

The stopper driving unit 8 uses the relative protruding displacement of the latch bolt 6 with respect to the trigger 7 to release the latch with the dead bolt 4 of the dead stopper 3 by simultaneously moving the latch bolt 6 and the trigger 7 from the protruding position to the retracted position. It is connected so that it can output as a displacement. Thereafter, when the latch bolt 6 is displaced in the protruding direction with respect to the trigger 7, that is, when the door closing operation is completed and the latch bolt 6 enters the latch strike hole 5, the dead stopper 3 and the dead bolt 4 are moved due to relative displacement. The dead bolt 4 which has been driven in the unlocking direction of FIG. 1 and released from the dead stopper 3 is moved to the locking position by the urging force and is automatically locked.

When the automatic locking is completed, the transmission of the operating force of the dead stopper 3 due to the relative displacement of the latch bolt 6 with respect to the trigger 7 is released until the simultaneous simultaneous retracting operation of the latch bolt 6 and the trigger 7, and then the dead bolt 4 is unlocked. Even if the latch bolt 6 is operated singly after shifting to, automatic locking is not performed.

The output of the latch bolt 6 and the relative displacement of the latch bolt 6 with respect to the trigger 7 by simultaneous movement from the projecting position of the trigger 7 to the retracted position to the dead stopper 3 is appropriately connected to the latch bolt 6 and the dead stopper 3 when both are retracted. The connection release after the dead stopper 3 is operated can be achieved by operating the release means of the connection means at the relative position between the latch bolt 6 and the trigger 7 when the dead stopper 3 is operated. Is possible.

Therefore, when the deadbolt 4 shifts to the locked state by the automatic locking operation, the latch bolt 6 protrudes and is locked in the latch strike hole 5, and in this state, the advancing / retreating path of the deadbolt 4 and the deadbolt strike hole 2 An appropriate movement clearance is secured between the two.

Further, the stopper driving unit 8 is configured to perform the unlocking operation of the dead stopper 3 with respect to the dead bolt 4 by using the displacement of the latch bolt 6, so that the dead bolt 4 can be removed without affecting the latch bolt 6. Since it can be operated, it is possible to move the dead bolt 4 to the unlocked position with the movement clearance secured between the latch bolt 6 and the dead bolt strike hole 2.

As a result, since the dead bolt 4 can be driven to the unlocked position without applying back pressure to the dead bolt 4, operability is improved.

In addition, after the locking operation is completed, the stopper driving unit 8 is restricted from being automatically locked by operating the latch bolt 6 after shifting to the unlocked state.

As a result, even if the trigger 7 of the door opened in the unlocked state is excessively retracted, the automatic locking operation does not occur, and the latch bolt 6 is attached to the exterior of the door in the unlocked state. Even if it is operated from the point of view, since it is not automatically locked, the operation assumed by the user is performed, and the user is not confused.

According to the embodiment, the stopper driving unit 8 includes the clutch piece 10 that outputs the relative displacement of the latch bolt 6 with respect to the trigger 7 as the displacement of the pushing unit 9.
The pushing portion 9 of the clutch piece 10 starts from the position when the contraction operation is completed from the state where both the trigger 7 and the latch bolt 6 are projected, and the dead stopper 3 is within the operating range of the pushing portion 9. On the contact path where the operation point is located, the position when the operation point is actuated and the dead stopper 3 is unlocked, and the end point of the contact path is restricted from going back to the contact path In addition, the starting point of the contact path is set as the end point, and the moving point is moved along the disconnection path where the operating point of the dead stopper 3 is located outside the operating range of the pusher 9.

The stopper driving unit 8 has a clutch piece 10 that can drive the dead stopper 3 by the operation of the pushing unit 9. The pushing portion 9 of the clutch piece 10 moves on a loop path that connects the contact path and the disconnect path, and the movement of the clutch piece 10 on the contact path drives the release of the dead bolt 4 to the dead stopper 3. .

The disconnection path starts from the position of the pushing portion 9 at the end of the unlocking drive of the dead stopper 3 and starts from the start point of the contact path described above, and the backward travel from the start point of the disconnect path to the contact path is restricted. In addition, once moving to the disconnected route, the movement to the connected route needs to return to the starting point of the connected route.

As a result, once the dead stopper 3 is driven, for example, after the unlocking operation is performed, the latch bolt 6 is operated to return the relative position with the trigger 7 to the positional relationship at the time of unlocking. However, there is no automatic locking state. *

In addition, according to the embodiment, the clutch piece 10 translates on the connection / disconnection path, and is configured to be a rotation device that is rotationally driven on the connection path to give the pushing portion 9 an operation stroke to the operation point. can do.

Driving the dead stopper 3 by the pushing portion 9 of the clutch piece 10 is sufficient if the operating point of the dead stopper 3 is disposed on the translational contact path of the pushing portion 9. When it is rotated occasionally, the space can be used effectively.

In this case, the clutch piece 10 is rotatably connected to the latch bolt 6 and constitutes a lock device that is driven to rotate by the operating projection 12 of the trigger 7 to which the follower portion 11 is pressed. The structure becomes simple because there is no need to arrange the.

According to the embodiment, the dead stopper 3 includes the pressed piece 13 and is urged in the locking direction to the dead bolt 4, and the clutch piece 10 presses the pressed piece 13 on the contact path. Thus, it is possible to configure a lock device that releases the dead stopper 3.

The operation of releasing the locking of the dead stopper 3 by the pushing portion 9 is sufficient if an operating portion such as a mechanical switching mechanism for driving the dead stopper 3 in the direction of releasing the locking is disposed on the contact path of the pushing portion 9. However, when the pressed piece 13 of the dead stopper 3 is directly operated as in the present invention, the structure is simplified.

According to the embodiment, the pressed piece 13 of the dead stopper 3 has the position of the pushing portion 9 in front of the end position of the latch bolt 6 in the protruding direction as a terminal edge, and the clutch piece 10 includes the latch bolt 6, The lock device is configured so that the rotation posture is maintained in the disconnection path until both the trigger 7 and the trigger 7 reach the protruding position, and the pushing portion 9 is positioned on the extended line on the back surface of the pressed piece 13 returned to the initial position by the urging force. can do.

In the contact path, the pushing portion 9 is located on the pressed piece 13 of the dead stopper 3, and when the latch bolt 6 projects and moves relative to the trigger 7, the clutch piece 10 is driven to rotate and the pressed piece. 13 is pressed to drive the dead stopper 3.

The pressed piece 13 has an end edge before the end position of the latch bolt 6 in the protruding direction. When the pushing portion 9 that has traveled on the pressed piece 13 exceeds the end of the pressed piece 13, the dead stopper 3 Returns to its original position by the biasing force. As a result, the pushing position of the pressed piece 13 by the operating protrusion 12 of the trigger 7, that is, the pushing portion 9 that holds the rotating position is relatively positioned facing the back surface of the pressed piece 13, that is, the disconnection path. Move to.

As long as the clutch piece 10 takes the rotational posture, the pushing portion 9 once moved to the disconnection path is positioned on the back surface of the pressed piece 13 and cannot move to the upper surface that can be pushed with respect to the pressed piece 13. The irreversibility with the contact path is guaranteed.

As a result, even if the dead stopper 3 is unlocked and automatically locked, the unlocking operation is manually performed, and further, the latch bolt 6 is advanced or retracted, and the locked state is not shifted.

In the present invention in which the pushing portion 9 is moved to the back surface of the pressed piece 13 to form a irreversible breaking path in the vertical direction, the entire apparatus is more compact than in the case where a contact path and a breaking path are constructed in the horizontal direction. Furthermore, even if the pressed piece 13 and the pushing portion 9 are overlapped at the position in the protruding direction due to an error or the like, the pushing portion 9 is pressed against the pushed piece 13. Therefore, the operation reliability is improved.

According to the embodiment, the clutch piece 10 is relatively movable in the projecting direction of the latch bolt 6 and is connected to the latch case 14 that is mounted by being urged in the retracting direction. When both move to the projecting position, the rotational posture is canceled and the upper end of the pressed piece 13 is moved to a position corresponding to the upper surface. It is possible to configure a lock device in which a guide portion 15 for rotationally driving is formed.

When both the latch bolt 6 and the trigger 7 are moved to the protruding position, the clutch piece 10 is released from the rotational posture, and the pushing portion 9 moves on the extended line on the upper surface of the pressed piece 13. When both of the triggers 7 move to the retracted position, the pusher 9 moves to a contact path that rides on the upper surface of the pressed piece 13.

On the other hand, if the retracted distance between the latch bolt 6 and the trigger 7 is different due to the distortion of the door frame 1 during the closing operation, the clutch piece 10 that is rotationally driven by the relative position of the latch bolt 6 to the trigger 7 is tilted and pushed. Although there is a possibility that the edges of the moving portion 9 and the pressed piece 13 may interfere with each other, according to the present embodiment, the interference state can be resolved by performing a contraction operation of the latch bolt 6 after the interference occurs. become.

That is, since the clutch piece 10 is connected to the latch case 14 that is movable relative to the latch bolt 6, even when interference occurs and the clutch piece 10 cannot move, the retraction operation of the latch bolt 6 is not performed. As a result, the leading end of the clutch piece 10 and the guide portion 15 formed on the latch bolt 6 forcibly drive the clutch piece 10 to relieve the interference.

According to the embodiment, since the dead bolt can be driven with the movement clearance secured by the latch bolt, the unlocking operation force can be reduced and the operability can be improved.

This application is based on a Japanese patent application filed on October 30, 2014 (Japanese Patent Application No. 2014-212484), the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 Door frame 2 Dead bolt strike hole 3 Dead stopper 4 Dead bolt 5 Latch strike hole 6 Latch bolt 7 Trigger 8 Stopper drive part 9 Pushing part 10 Clutch piece 11 Follower part 12 Acting protrusion 13 Pushed piece 14 Latch case 15 Guide Part

Claims

A dead bolt that is biased in the direction of the locking position to be locked in the dead bolt strike hole of the door frame, and is held in the unlocked position by locking the dead stopper by an unlocking operation;
In the closed state, it is elastically locked in the latch strike hole of the door frame, and in the locked state with the latch strike hole, an appropriate movement clearance is ensured between the dead bolt advance / retreat path and the dead bolt strike hole. A latch bolt that can be retracted;
A trigger that is pressed against the door frame and held in the retracted position in the closed state;
By simultaneously moving the latch bolt and the trigger from the protruding position to the retracted position, the relative displacement of the latch bolt relative to the trigger is transmitted as the unlocking displacement of the dead stopper with the dead bolt. A stopper driving unit that releases the operating force of the dead stopper due to relative displacement with respect to the trigger of the bolt until the latch bolt and the trigger are simultaneously retracted again,
A locking device.
The stopper driving unit is
A clutch piece that outputs the displacement of the latch bolt relative to the trigger as the displacement of the pusher;
The starting point is the position when the retracting operation is completed from the state where both the trigger and latch bolt protrude, and the operating point of the dead stopper is located within the operating range of the pusher, and the operating point is operated to set the dead A contact path whose end point is the position when the stopper is unlocked,
A break path in which the end point of the contact path is set as a start point where the retrograde to the contact path is restricted, the start point of the contact path is set as an end point, and the operating point of the dead stopper is located outside the operating range of the pushing portion,
Have
The pushing portion of the clutch piece moves between the contact path and the disconnect path.
The locking device according to claim 1.
The locking device according to claim 2, wherein the clutch piece translates on the connection path and is rotationally driven on the connection path to give an operating stroke to the operation point on the pushing portion.
The lock device according to claim 3, wherein the clutch piece is rotatably connected to a latch bolt, and is driven to rotate by an operating projection of a trigger with which a follower is pressed.
The dead stopper includes a pressed piece and is biased in a locking direction to the dead bolt,
The locking device according to claim 2, 3 or 4, wherein the clutch piece presses the pressed piece on a contact path to release the dead stopper.
The pressed piece of the dead stopper has the end edge as the position of the pushing portion in front of the end position of the latch bolt in the protruding direction,
The clutch piece maintains a rotational posture in the disconnection path until both the latch bolt and the trigger reach the protruding position, and the pushing portion is on an extension line on the back surface of the pressed piece whose initial position is restored by the biasing force. To position,
The locking device according to claim 5.
The clutch piece is relatively movable in the protruding direction of the latch bolt, and is coupled to a latch case that is urged and mounted in the retracting direction,
When both the latch bolt and the trigger are moved to the protruding position, the rotational posture is canceled and moved to the upper surface corresponding position of the pressed piece,
At the tip of the clutch piece and the latch bolt, a guide portion for rotating the clutch piece by the degeneration of the latch bolt is formed.
The locking device according to claim 6.