JPH094303A - Sickle-like bolt lock of temporary lock type - Google Patents

Abstract

PURPOSE: To prevent a hook bolt from colliding with another thing or from being caught with clothing by retaining the hook bolt retreatingly in a case at the time of unlocking and in addition to realize the simplification of opening/ closing operation by conducting arrangement so that the hook bolt may be changed over into a locking posture only by the closing operation of a door panel. CONSTITUTION: A hook bolt 13 is energized in rotation in a locking direction by means of a spring 25. An unlocking lever 15 accompanied with an operation handle is provided. The unlocking lever 15 and the hook bolt 13 are mutually connected by means of a linking arm 14. An oblong hole 26 is provided at the linking arm 14, and the hook bolt 13 changing over into a locking posture alone is allowed. A trigger 16 that stops in receipt the hook bolt 13 at the time of unlocking and maintains an unlocking posture is provided. The trigger 16 possesses a projecting piece 36 to project outside a case 12. At the time of door closing, the trigger 36 butts against a door frame 1 in precedence to others, and releases the posture retention of the hook bolt 13. As a result, the hook bolt 13 can be automatically engaged with a striker 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary lock type sickle lock applied to a sliding door.

[0002]

2. Description of the Related Art In a sickle lock, it is known from Japanese Utility Model Laid-Open No. 4-110877 that a hook bolt is retracted and held in an unlocked position in a case when a door panel is in an open state. There, an operating lever that swings together with the operating handle is provided in the case, and the operation of the operating lever is transmitted to the hook bolt via a link. A click spring is provided between the operating lever and the case, and the spring can hold the operating lever in the standby position and the unlocked position, respectively.

[0003]

In the above-mentioned sickle lock, when the door panel is opened, the hook bolt retracts into the case, so the hook bolt collides with another object and is deformed.
It can prevent a part of clothes from getting caught on the hook bolt. However, when the door panel is closed or after that, it is necessary to operate the operation handle to switch the hook bolt to the locked posture, which is troublesome.

The object of the present invention is to retain the hook bolt in the unlocked position in the case, and when the door panel is closed, the hook bolt automatically engages with the striker to lock the door. It is to provide a temporary lock type sickle lock. The object of the present invention is a sickle lock capable of retracting and holding the hook bolt in the unlocked position in the case, but even when the hook bolt is switched to the locked position by mischief or the like, the hook bolt exerts a latching action. To provide a temporary lock type sickle lock that can be engaged with a striker and maintain a locked state. An object of the present invention is to provide a temporary lock type sickle lock provided with a thumb turn mechanism for preventing the unlocking lever from being unlocked.

[0005]

A sickle lock of the present invention comprises a case 12 embedded in a door panel 2, a hook bolt 13 for engaging and disengaging a striker 8 provided in a door frame 1, and a hook in a locked state. An unlocking lever 15 for unlocking the bolt 13 via the interlocking arm 14 and a trigger 16 for contacting the hook bolt 13 in the unlocked state and maintaining the hook bolt 13 in the unlocked state are provided. Hook bolt 13
Has a latch arm 22, which is swingably supported by a shaft 24 between an unlocked posture in which the latch arm 22 is located inside the case 12 and a locked posture in which the latch arm 22 projects outside the case 12. The spring 25 urges the swinging motion toward the locked position. The interlocking arm 14 connects the hook bolt 13 and the unlocking lever 15, and a swinging stroke when the hook bolt 13 is switched to the locking posture by the urging force of the spring 25 is connected to either one of the connecting portions. An elongated hole 26 for absorbing is provided. The trigger 16 has a projecting piece 36 that comes into contact with the door frame 1, and swings on a shaft 38 between an operating posture in which the projecting piece 36 retracts into the case 12 and a standby posture in which the projecting piece 36 projects outside the case 12. It is movably supported and is urged by a spring 39 to swing toward the standby position. Interlocking with the protrusion 36 contacting the door frame 1 and switching to the operating posture, the contact state between the hook bolt 13 and the trigger 16 is released, and the hook bolt 13 is locked by the biasing force of the spring 25. It is configured to switch to the state.

Specifically, a thumb-turn mechanism for preventing the unlocking operation of the unlocking lever 15 is provided inside the case 12.
This thumb-turn mechanism includes an actuation block 41 that is swung by a thumb turn lever 10, a lock lever 42 that swings in conjunction with the actuation block 41, and an unlocking lever 15.
Of the engaging block 30 provided on the outside and the spring 4 which is circumscribed to the operating block 41 and maintains the switching state of the operating block 41.
4 When the unlocking lever 15 is in the standby state,
It is possible to switch between a lock posture in which the lock lever 42 approaches the engagement block 30 to prevent the unlocking operation of the unlock lever 15 and an unlock posture in which the lock lever 42 retreats out of the unlocking track of the engagement block 30. It is provided in.

[0007]

When the door panel 2 is opened, the hook bolt 13 is held in the posture by the trigger 16 and is in the unlocked position in the case 12, and the protrusion 36 of the trigger 16 is in the case 1.
2 It projects outside. When the door panel 2 is closed in this state, the projecting piece 36 comes into contact with the door frame 1 ahead of the others and is pushed into the case 12 against the biasing force of the spring 39, and the entire trigger 16 operates. Switch to posture. Since the posture maintaining action by the trigger 16 is unlocked in accordance with this posture variation, the hook bolt 13 is swung rapidly by the biasing force of the spring 25 and engages with the striker 8. That is, it is not necessary to switch the hook bolt 13 with the operation lever 9, and the hook bolt 13 automatically engages with the striker 8 in a locking manner. Since the amount of protrusion of the trigger 16 from the case 12 is sufficiently smaller than the amount of protrusion of the hooking arm 22 of the hook bolt 13, there is little risk that another object will collide or get caught on clothes.

The hook bolt 13 and the unlocking lever 15 are
Since they are connected by the interlocking arm 14 having the long hole 26 for absorbing the stroke, the hook bolt 13 can be independently oscillated and displaced between the unlocked position and the locked position, and in the locked state, the hook bolt 13 cooperates with the spring 25 to latch. Exert an effect. When the thumb turn mechanism is provided, the unlocking operation by the operation handle 9 can be prevented by providing the thumb turn lever 10 only on one side of the door panel 2. This means that the temporary lock type sickle lock can be used as a room lock that can be prevented from unlocking only from the indoor side.

[0009]

According to the present invention, when the hook bolt 13 is supported by the trigger 16 against the urging force of the spring 25 and the door panel 2 is opened, the latch arm 22 moves to the case 1.
2 It was prevented from protruding outside. On top of that, the door panel 2
Using the retracting operation of the trigger 16 to the inside of the case accompanying the closing operation of the hook, the posture holding state with respect to the hook bolt 13 is released, and the hook bolt 13 is automatically locked with the striker 8 by the biasing force of the spring 25. I was able to do it. According to such a sickle lock, the hook bolt 13 can be retracted and held in the case 12 only by opening the door panel 2, so that when the door panel 2 is opened, another object is not attached to the hook bolt 13.
It is possible to prevent the clothes from colliding with the hook bolt 13 or to prevent clothes from being caught on the hook bolt 13 to improve the safety and appearance at the time of use, and to lock the hook bolt 13 with a simple operation of simply closing the door panel 2. Can be switched to. Even if the hook bolt 13 is switched to the locked position with the door panel 2 opened, the hook bolt 13 cooperates with the spring 25 to exert a latching action, so that the door panel 2 can be kept in that state without any trouble. Can be operated,
There is no need to return the hook bolt 13 to the unlocked position in advance,
This also improves the usability of the sickle lock.

[0010]

1 to 7 show an embodiment of a sickle lock according to the present invention. In FIG. 2, reference numeral 1 is a door frame and 2 is a door panel. The door panel 2 has runners 3 provided on both sides of the upper part thereof.
It is suspended via a rail, and can be opened and closed by pulling along the upper rail 4 that guides the runner 3 while traveling. A constant force spring unit 5 is arranged above the closed end of the door frame 1,
By connecting the spring end to the runner 3, the entire door panel 2 is closed and urged to move freely. Inside the open end side of the upper rail 4, a stopper 6 for holding the runner 3 in an open state against the tension of the spring unit 5 is provided. A floor contact mechanism 7 is provided on the inner surface of the lower portion of the door panel 2 to contact the floor surface in the closed state to prevent sound and light from leaking. To fix and hold the door panel 2 in the closed position, a sickle lock is provided on the closed end side thereof, and a striker 8 is provided on the door frame 1. Reference numeral 9 is an operation handle for unlocking the sickle lock and further opening the door panel 2, and 10 is a thumb turn lever.

In FIG. 3, the sickle lock is a box-shaped case 12
A hook bolt 13 for engaging and disengaging the striker 8, an unlocking lever 15 for unlocking the locked hook bolt 13 via the interlocking arm 14, a trigger 16 and a thumb turn mechanism. I am doing it. The case 12 is composed of a container-shaped case body 12a in which an attachment base 17 is integrally bent and formed, and a cover 12b that closes the opening thereof.
It is assembled between 2a and the cover 12b. Mounting base 17
An opening / closing opening 18 for the hook bolt 13 and an opening / closing opening 19 for the trigger 16 are respectively formed on the side wall of the case continuous with. The case 12 is embedded in the panel from the side of the side end surface of the door panel 2, and the mounting base 17 is fixed with screws.

In FIG. 7, the hook bolt 13 is formed by press-forming a pair of front and rear hook bodies 13a which are caulked and fixed by three caulking pins 23, and the pair of hook bodies 13a are front and rear through a gap. It has a triangular interlocking part 21 facing each other, and a hook-shaped hooking arm 22 protruding laterally from the interlocking part 21. At the portion of the latch arm 22, the pair of hook bodies 13a are closely joined to each other in the front-rear direction. The hook bolt 13 is swingably supported by the shaft 24, and the hook arm 22
The locking posture of Fig. 4 (b) in which the
The latch arm 22 can be changed into the unlocked posture shown in FIG. 4A in which the latch arm 22 is retracted into the case 12, and the torsion coil type spring 25 externally fitted to the shaft 24 swings toward the locked posture. It is vigorous. One end of the shaft 24 has a case body 1 as shown in FIG.
2 Caulked and fixed, cover 1 in the screw hole provided on the other end
The screw inserted from the outer surface side of 2b is screwed in and fixed.

As shown in FIG. 3, the interlocking arm 14 is made of a partially arcuate plate body formed by punching out a metal plate, and one end of the interlocking arm 14 is connected to the upper corner of the interlocking portion 21 of the hook bolt 13 via a caulking pin 23. Then, the partially arcuate elongated hole 26 provided in the lower half thereof is connected to the pin 31 provided in the unlocking lever 15. The formation range of the long hole 26 is set to a length that can absorb the swing stroke when the hook bolt 13 switches from the unlocked posture to the locked posture.

The unlocking lever 15 is a die cast molded product, and has a boss 28 rotatably supported by the case body 12a and the cover 12b, an arm 29 protruding from the boss 28, and a base end peripheral surface of the arm 29. Engagement block 3 provided
And 0 are integrally formed. Pin 3 at the tip of arm 29
1 is fixed, and this pin 31 is connected to the long hole 26. The unlocking lever 15 is a torsion coil type spring 3 fitted onto the boss 28.
In step 2, turn and rotate in the counterclockwise direction. The engagement block 30 is formed in a trapezoidal shape, and in the state where the unlocking lever 15 is incorporated in the case 12, its standing wall surface 30a receives the urging force of the spring 32 and the case body 12a as shown in FIG.
Abut the inner surface of the side wall. Therefore, the operation handle 9 connected to the boss 28 via the handle shaft 33 cannot be rotated counterclockwise from the state of FIG. 3, and the operation handle 9 is placed in a vertical posture when the door panel 2 is closed. This is advantageous in that it can be maintained, that is, it is easy to operate when closing the door panel 2 only by human power.

As shown in FIG. 4B, the hook bolt 13
When the lock is in the locked state, the upper half of the interlocking arm 14 is located in the vicinity of the connecting portion 21, and the lower end of the elongated hole 26 thereof has the pin 31.
Is engaged with. From this state, move the operating handle 9 to the spring 3
When it is rotated clockwise against the urging force of 2.25, the hook bolt 13 swings counterclockwise around the shaft 24 and switches to the unlocked posture of FIG. A trigger 16 is provided below the hook bolt 13 in order to maintain the unlocked posture and return the hook bolt 13 to the locked posture by utilizing the closing operation of the door panel 2. When the operating force is released after the unlocking operation, the operating handle 9 returns to the original position, and the pin 31 is located near the upper end of the elongated hole 26.

The trigger 16 is a press-molded product obtained by bending a triangular contact piece 35 for receiving the hook bolt 13 and a triangular protruding piece 36 contacting the door frame 1 in a stepwise manner. The spring receiving wall 37 is bent below. Since the plate surface is swingably supported by the shaft 38 toward the contact piece 35 side, the trigger 16 as a whole has a standby posture in which the projecting piece 36 projects outside the case, and the projecting piece 36 retracts into the case. It can be swung in the operating posture, and is biased by a torsion coil spring 39 toward the standby posture. In the standby position, as shown in FIG. 5, the spring receiving wall 37 is in contact with the inner peripheral edge wall of the opening / closing port 19 to define the swing limit of the trigger 16. In this standby state, the contact piece 35 makes external contact with the caulking pin 23 located at the lowermost part of the interlocking portion 21, and the hook bolt 13 is maintained in the unlocked posture. When the protrusion 36 is pushed inward against the biasing force of the spring 39 from this state, the hook bolt 13 slightly swings to the same side as the abutment piece 35, and the abutment piece 35 is engaged in the meantime. Since it passes through the lower half peripheral surface of the pin 23, the hook bolt 13 is released from the restraint by the abutment piece 35 and rapidly switches to the locked posture.

The thumb turn mechanism has an operation block 41 rotatably supported by the case body 12a and the cover 12b.
And the lock lever 4 arranged below the operation block 41.
2 and a link rod 4 for connecting both 41 and 42 in an interlockable manner
3, an engagement block 30 provided on the unlocking lever 15, and a position holding spring 44 formed of a leaf spring.

The operation block 41 is a die-cast molded product in which a pentagonal lever wall 45 is integrally projected around one end of the boss, and has a pair of restricting surfaces 46 defining the rotation limit at the periphery of the lever wall 45. The restriction surfaces 46 are continuous with each other by arcuate surfaces concentric with the boss. When the operation block 41 is incorporated in the case 12, one of the pair of restricting surfaces 46 closely faces the side wall of the case. On the peripheral surface of the boss, two positioning grooves 47 are formed corresponding to each restriction surface 46, and the free end of the spring 44 is pressed against this. The spring 44 is bent in a partial arc shape, and the base end portion of the spring 44 is fixed to the case body 12a.
The outer surface of the convex arc portion is in contact with the side wall of the case. The operation block 41 is rotated by the thumb turn lever 10 via a lever shaft 49.

The lock lever 42 is a press-formed product obtained by punching out a thick plate, and its base end is supported by a pin 48 fixed to the case body 12a so as to be vertically swingable. Unlocking lever 1
When 5 is in the standby state, by rotating the thumb turn lever 10, the lock lever 50 has a lock surface 50 at its swinging tip, and the lock surface 50 of the lock block 42 contacts the contact surface 30b of the engagement block 30.
A lock position (a state shown in FIG. 4B) that blocks the unlocking operation of the unlocking lever 15 and faces the lock surface 50.
Can be switched to an unlocked posture (state shown in FIG. 5) in which the engaging block 30 is retracted to the outside of the turning rail.
Although the thumb-turn lever 10 is provided only on one side of the door panel 2 in principle, it can be provided inside and outside the door panel 2 like the operation handle 9 if necessary.

In a state where the above-mentioned members are assembled in the case 12, the hook bolt 13 and the operation block 41 are arranged in the upper half of the case, and the trigger 16 is arranged below the hook bolt 13. Further, the lock lever 42 and the unlocking lever 15 are located below the operation block 41, and the interlocking arm 1 is provided in the middle of the left and right of the trigger 16 and the lock lever 42.
4 is located. Reference numeral 51 indicates the case body 12a and the cover 1.
2b is a screw boss that connects with 2b and is the same part as the shaft 24. The screw boss 51 is also used to receive one spring arm of the springs 32 and 39.

In FIG. 3, the striker 8 has a case 53 embedded and fixed in the door frame 1, and a screw 54 is provided inside the case 53.
A vertical adjustment frame 55 whose vertical position can be adjusted by tightening and loosening is provided, and a horizontal adjustment frame 57 that can be position-adjusted left and right (depth direction) by tightening and loosening a screw 56 inside this vertical adjustment frame 55. The opening / closing port is opened on the outer side surface of the horizontal adjustment frame 57, and the engaging wall 58 for engaging and disengaging the hooking arm 22 of the hook bolt 13 is provided at the lower end thereof. When the door panel 2 is closed, the protruding piece 36 of the trigger 16 protruding from the case 12 contacts the decorative plate provided on the outermost surface of the case 53 of the striker 8.

Next, the related operation of each of the above parts will be described.
With the door panel 2 open, the hook bolt 13
Is in the unlocked posture, and the protrusion 36 of the trigger 16 projects outside the case 12. When the runner 3 is separated from the stopper 6 in this state, the door panel 2 receives the pulling force of the constant load spring unit 5 and self-propels to the closing side without applying a closing operation force. Then, as shown in FIG. 4A, when the door panel 2 approaches the closed end of the door frame 1,
As the protrusion 36 of the trigger 16 comes into contact with the door frame 1 ahead of the others, it is pushed inward of the case 12 against the biasing force of the spring 39. With the swing of the trigger 16, the contact piece 35 slightly swings the hook bolt 13 in the same direction through the swaging pin 23, and passes through the lower portion of the circumferential surface of the swaging pin 23. At the same time, the hook bolt 13 is rotated clockwise by the spring 25 so that the latch arm 22 thereof enters the striker 8 and finally engages with the engagement wall 58 as shown in FIG. 4 (b). Hold the door panel 2 in the closed position.

In the locked state, when the thumb turn lever 10 is rotated clockwise as shown by the arrow in FIG. 4 (b), the lock lever 42 is switched to the lock posture and closely faces the engagement block 30. To do. Therefore,
In this state, the operation handle 9 cannot be rotated and the hook bolt 13 cannot be unlocked. When the thumb turn lever 10 is returned to the original standby state as shown in FIG. 5, the lock lever 4
Since 2 comes out of the rotation locus of the engagement block 30, the unlocking lever 15 can be operated. At this time, the pin 31 is located at the lower end of the elongated hole 26 of the interlocking arm 14. Therefore, when the operation handle 9 is rotated clockwise about 30 degrees, the operation is transmitted to the hook bolt 13 via the interlocking arm 14 and the hook bolt 13 can be returned to the unlocked posture. When the door panel 2 is slightly opened while keeping this state, the trigger 16 causes the spring 39 to move.
Since it is rotated by and returned to the standby posture, even if the operating force of the operating handle 9 is released after this, the hook bolt 1
3 can be held in the unlocked posture.

In the above-described embodiment, the elongated hole 26 is provided in the connecting portion with the unlocking lever 15, but it is not necessary, and the elongated hole may be provided in the connecting portion side with the hook bolt 13. Trigger 1
In the unlocked state, 6 and the hook bolt 13 do not necessarily have to be in contact with each other through the pin 23, and the peripheral surfaces thereof can directly contact each other. The various springs incorporated in the case 12 can be changed to other types. When the cushion rubber for cushioning and sealing is arranged on the door frame 1, the protrusion dimension of the hooking arm 22 can be set larger by that amount.

[Brief description of drawings]

FIG. 1 is an internal front view showing a schematic structure of a sickle lock.

FIG. 2 is a front view of a sliding door.

FIG. 3 is a vertical sectional front view showing a relational structure between a sickle lock and a striker.

4 (a) and 4 (b) are internal front views showing an operating state of the sickle lock, respectively.

FIG. 5 is an internal front view showing an unlocking operation state of the hook bolt.

FIG. 6 is a sectional view taken along line AA in FIG. 3;

FIG. 7 is a perspective view showing the sickle lock with its operating parts separated.

[Explanation of symbols]

 1 Door Frame 2 Door Panel 8 Striker 9 Operation Handle 12 Case 13 Hook Bolt 14 Interlocking Arm 15 Unlocking Lever 16 Trigger 22 Latching Arm 24 Axis 25 Spring 26 Long Hole 36 Projection Piece 38 Axis 39 Spring

Claims (2)

[Claims] 1. Inside a case 12 embedded in a door panel 2, a hook bolt 13 for engaging and disengaging a striker 8 provided in a door frame 1 and a hook bolt 13 in a locked state are unlocked via an interlocking arm 14. An unlocking lever 15 to be operated,
A provisional lock type sickle lock having a hook 16 that comes into contact with an unlocked hook bolt 13 to maintain the hook bolt 13 in an unlocked state. However, the latch arm 22 is swingably supported by the shaft 24 between the unlocked posture in which the latch arm 22 is positioned inside the case 12 and the locked posture in which the latch arm 22 projects to the outside of the case 12, and the locked posture by the spring 25. The interlocking arm 14 includes a hook bolt 13 and an unlocking lever 15.
And a long hole 26 that absorbs the swing stroke when the hook bolt 13 is switched to the locked posture by the urging force of the spring 25 is provided in either one of the two connecting portions. Has a projecting piece 36 that comes into contact with the door frame 1, and an operating posture in which the projecting piece 36 retracts into the case 12, and the projecting piece 3
6 extends outside the case 12 in a standby position
It is swingably supported by 8, and is urged by a spring 39 so as to swing toward the standby position. In association with the protrusion 36 coming into contact with the door frame 1 and switching to the operating position, A temporary lock type sickle lock configured such that the contact state between the hook bolt 13 and the trigger 16 is released and the hook bolt 13 is switched to the locked state by the urging force of the spring 25. 2. A thumb-turn mechanism for preventing the unlocking operation of the unlock lever 15 is provided inside the case 12, and the thumb-turn mechanism is operated by the thumb-turn lever 10 in an oscillating manner. The lock lever 42 swings in synchronism with the lock lever 41, the engagement block 30 provided on the unlocking lever 15, and the spring 44 that is in contact with the operating block 41 to maintain the switching state of the operating block 41. When the lever 15 is in the standby state, the lock lever 4
2 is provided so as to be switchable between a lock posture in which the lock lever 42 approaches the engaging block 30 to prevent the unlocking operation of the unlocking lever 15 and an unlocking posture in which the lock lever 42 retracts outside the unlocking track of the engaging block 30. The temporary lock type sickle tablet according to claim 1.