JPH1037556A - Sliding door lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve enhancement of the productivity of a sliding door lock, rationalization of its control and handling, and simplification, miniaturization, and weight reduction of its constitution and to make it easy to construct and use the same by enabling the backset to be freely adjusted according to the size of the stile of a sliding door, and enabling the lock to be used for sliding doors of various sizes without being limited by the backset. SOLUTION: This sliding door lock includes a sickle 14, mounted in a lock case 4 in such a way that it can move in and out, and a trigger 10, activated so as to be able to abut to a door stop, and enclosed in the lock case 4 in such a way that it can move in and out. A link 7 is rotatably pivotally attached to the inside of the lock case 4, and the trigger 10 is rotatably connected to one end of the link 7. The sickle 14 is rotatably connected to the other end of the link 7 so that the sickle 14 can advance as the trigger 7 moves backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can freely adjust the backset size according to the frame size of a sliding door, and can be used for sliding doors of various sizes without being restricted by the backset size. The present invention relates to a sliding door lock which can streamline the handling, simplify the configuration, reduce the size and weight, and facilitate the construction and use.

[0002]

2. Description of the Related Art A conventional sliding door lock is formed in a box shape as shown in FIG. 21, and a rotating cam 1 linked to a thumb turn knob or the like is rotatably provided therein, and a sliding door is pressed against a door stop.
After the trigger T is pushed in, the thumb turn is operated to project the sickle 2 to the front of the front panel 3 so that the sickle 2 can be disengaged from the opening of the seat provided at the door stop.

[0003] However, this conventional sliding door lock requires an operation such as thumb-turning operation after closing the door, which is troublesome, and the distance between the rotary cam 1 and the front plate 3, that is, the so-called back set dimension, is constant. The use of sliding doors with the above-mentioned frames was limited, and could not be used for sliding doors of various sizes. Therefore, various locks have to be provided in a line for each size of the sliding door, and there are problems in that small-scale production of many models is incurred, productivity is low, and their management and handling are complicated.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem, and allows the backset dimensions to be freely adjusted according to the size of the sliding door frame. Sliding doors of various sizes are not restricted by the backset dimensions. The purpose of the present invention is to provide a sliding door lock that can be used, can improve its productivity and rationalize management handling, and can simplify its configuration and reduce its size and weight, as well as facilitate construction and automatically lock. I do.

[0005]

According to the present invention, a sickle attached to a lock case so as to be able to protrude and retract is urged so as to be able to come into contact with a door stop and is housed so as to be able to protrude and retract into the lock case. In a sliding door lock provided with a trigger, a link is pivotably connected to the inside of a lock case, a trigger is rotatably connected to one end of the link, and a sickle is rotatably connected to the other end of the link. Connected, the sickle can move forward in conjunction with the retreat of the trigger, and the locking operation with the sickle can be performed automatically and promptly in conjunction with the operation of the trigger, eliminating the need for conventional operations such as thumb turn picking etc. , Easy to use.

According to a second aspect of the present invention, a hollow cylindrical trigger having substantially the same diameter is housed in a cylindrical lock case so as to be able to protrude and retract, and a sickle is movably housed in the trigger, and a sickle is provided at the front end of the trigger. In order to facilitate the construction, a groove that allows the lock to appear is provided to reduce the size and weight of the lock and to reduce the diameter of the engraving groove in which the lock is embedded. According to the invention of claim 3, a convex portion is provided at the rear end of the sickle, and when the sickle is advanced, the convex portion is engaged with a pivot of the link, and the sickle is rotatable around the pivot, thereby enabling the sickle to rotate. A locking operation is encouraged.

According to a fourth aspect of the present invention, a front end of a settle link is rotatably connected to a rear end of a sickle, a plurality of engagement claws are provided on the link, and a thumb turn knob or a swinging mechanism linked to a door handle is provided. A block is provided on the lock case so as to be rotatable, the block is provided so as to be movable back and forth in parallel with the settle link, and the block is provided with a locking claw that can be engaged with the engagement claw, so that the back set dimension can be freely set It can be adjusted to accommodate various sizes of sliding doors. Therefore,
The conventional absurdity of manufacturing and stocking various locks for each size of sliding door is eliminated to improve productivity and rationalize management and handling.

According to a fifth aspect of the present invention, the engagement between the engaging claw and the engaging claw is released when the sickle is advanced, so that the settle link can be advanced. To form a ratchet mechanism that can prevent the settle link from retreating and can move the link in a single direction, that is, forward. According to a sixth aspect of the present invention, the swing block is rotatably supported by the lock case, an elastic member is inserted between the block and the lock case, and the block is selectively rotated in either the left or right rotation direction. Energized, one sliding door lock can be selectively used for an automatic lock or a final lock.

According to a seventh aspect of the present invention, the swing block is urged in one of the right and left rotation directions so that the engaging claw and the engaging claw can be engaged with each other. Through engagement with
When the lock is locked, the settle link can be prevented from retreating, so that the lock can be used as a reliable and safe automatic lock that automatically locks the locked state. The invention according to claim 8 is characterized in that a curved surface portion is provided on the back surface of the engaging claw, the swing block is urged in either the left or right rotating direction, the curved surface portion is engaged with the engaging claw, and the settle link is engaged. It can be moved forward and backward, and can be used as a final lock that locks the lock by an operation such as thumb-turning after locking.

According to a ninth aspect of the present invention, the locking block is rotated in the locking direction at the time of locking, so that the settle link can be prevented from retreating through the engagement between the hooking pawl and the engaging pawl. It is possible to use as. According to the tenth aspect of the present invention, the swing block is rotated to release the engagement between the engaging claw and the engaging claw,
The unlocked state can be quickly formed by enabling the locked state at the time of locking to be released.

According to an eleventh aspect of the present invention, the front end of the settle link is rotatably connected to the rear end of the sickle, an engagement projection is provided at the rear end of the link, and the lock swings inside the lock case. A link is provided, the link is provided with a locking groove that can be engaged with the engagement protrusion, and a thumb-turn knob or the like for actuating a trigger as in the related art is unnecessary, and the back set size is eliminated by eliminating the backset size restriction. It can be installed at the desired position on the frame regardless of the sliding door lock. According to a twelfth aspect of the present invention, the locking projection is engaged with the locking groove at the time of unlocking, and the rear end of the settle link can be engaged with the front end of the swing link at the time of locking. That can be realized.

According to a thirteenth aspect of the present invention, the engaging projection and the engaging groove are provided with an inclined engaging surface and an engaging surface which can be engaged with each other, and these are engaged from the side of the swing link and the settle link. And the link that moves relatively easily can be easily realized, and at the time of locking, the settle link can be automatically moved. According to a fourteenth aspect of the present invention, the swing link is provided so as to be elastically displaceable, and the link is always arranged coaxially with the settle link, thereby realizing a locking mechanism with a simple configuration.
According to a fifteenth aspect of the present invention, a push rod is provided on at least one side of the swing link so as to be movable in the axial direction, and when the lock is locked, the push rod is engaged with the swing link to elastically displace the link. The engagement with the settle link can be released, and the unlocked state can be quickly formed.

According to a sixteenth aspect of the present invention, a guide hole is formed in the front-rear direction of the swing link, an adjustment piece is provided along the hole so as to be adjustable in position, and at least one side of the adjustment piece has a push rod or a wire. One end is connected so that the unlocking mechanism can be mounted at a desired position on the frame.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described below. In FIGS. 1 to 9, reference numeral 4 denotes a lock case made of a zinc alloy die-cast, which is integrally formed with a front plate 5, and a rear half thereof. A flat surface 4 a is formed on the bottom surface, and an elongated guide groove 6 is formed on the flat surface 4 a along the lock case 4.

A link 7 is rotatably connected to a front portion of the lock case 4 via a pin 8 as a pivot. A trigger 10 is rotatably connected to one end of the link 7 via a pin 9. Have been. The trigger 10 is formed in a hollow cylindrical shape with a bottom, and its outer diameter is formed to be substantially the same as the lock case 4.
This is accommodated in the front part of the lock case 4 so as to be able to move back and forth, and is inserted so as to be able to enter and exit through a through hole 11 formed in the front plate 5.

At the rear end of the trigger 10, one end of a trigger spring 12 housed in the lock case 4 is seated, and the trigger 10 is urged forward through the elasticity of the spring 12, so that the front end, which will be described later, is unlocked. It can be projected forward of the plate. A groove 13 is formed at the front end of the trigger 10, and a locking claw 15 at the front of the sickle 14 is inserted into the groove 13 so as to be able to enter and exit.

The sickle 14 is formed in a substantially L-shape. The other end of the link 7 is rotatably connected to a rear end of the sickle 14 via a pin 16. The front end of the settle link 17 is rotated by the pin 16. It is connected as possible.

In the figure, reference numeral 18 denotes a projection protruding upward from the rear end of the sickle 14 so as to be engageable with the pin 8, and reference numeral 19 denotes a projection protruding downward from the rear end of the sickle 14. The inner surface of the side wall 20 of the lock case 4 is slidable.

The settle link 17 is formed of an elongated plate, which is supported so as to be movable in parallel with the guide groove 6 in conjunction with the operation of the pin 16 and has a large number of engaging claws 21 on its upper surface.
Are formed in a sawtooth shape. At a predetermined position of the engaging claw 21, a locking claw 22 projecting from a swing block to be described later is engaged. Under this engagement, the locking claw 22 moves in one direction of the settle link 17, in the embodiment, the front. Is allowed to move.

The hook 22 protrudes downward from the lower surface of the swing block 23, and has an arcuate or curved curved surface 24 on the back of the pawl 22. The swing block 23 is formed in a thick, substantially rectangular parallelepiped shape, and has cylindrical support shafts 25 projecting from both sides thereof. The shaft 25 has the same shape as the guide groove 6 and a lock cover described later. The swing block 23 is rotatably supported in the guide groove.

Two concave portions 26 and 27 are formed on the upper surface of the swing block 23 with the just above the support shaft 25 interposed therebetween, and a set spring 28 as an elastic member is inserted between one of these and the peripheral wall 20. The swing block 23 is rotated clockwise or counterclockwise through the elasticity of the spring 28 to selectively use the sliding door lock as an automatic lock or a final lock.

That is, the set spring 28 is
6, the swing block 23 is rotated counterclockwise in FIG. 3 by the spring 28 so that the hook 22 is shallowly engaged with the hook 21.

When the sickle 14 is engaged with an opening (not shown) on the door stop side, the settling link 17 is prevented from retreating by the engagement between the engaging pawl 22 and the engaging pawl 21. It functions as an automatic lock that locks the locked state immediately.

On the other hand, when the set spring 28 is mounted in the recess 27, the swing block 23 is rotated clockwise in FIG. 7 by the elasticity of the spring 28 so that the curved surface portion 24 is engaged with the engaging claw 21. I have.

When the sickle 14 is locked with the door stop side opening (not shown), the swing block 23 is operated by a thumb turn knob or a door handle (not shown).
Is rotated in the counterclockwise direction in FIG.
1 to prevent the settle link 17 from retreating and function as a final lock for locking the locked state.

In addition, in the drawing, reference numeral 29 denotes a square hole formed through the support shaft 25, and a thumb rod or a square rod (not shown) linked to a door handle (not shown) is mounted in the hole 29. Reference numeral 30 denotes a front plate attached to the front plate 5, and a through hole 31 having the same shape as the through hole 11 is formed in the center thereof.

Note that a sickle 1 is provided on the door stop side frame of the sliding door.
4 and a receiving seat (both not shown) having an opening capable of engaging with the locking claw 15 are attached. A lock cover (not shown) is attached to the lock case 4, and a guide groove having the same shape as the guide groove 6 is formed in the cover.

In addition, reference numeral 32 denotes a cutout groove formed in the rear peripheral surface of the trigger 10 in the axial direction, and reference numeral 33 denotes a spring receiver provided inside the lock case 4 so that one end of the trigger spring 12 can be seated thereon. The settle link 17 is supported on the inner surface.

When assembling the thus constructed sliding door lock, a link 7 is rotatably connected to a front portion of the lock case 4 via a pin 8 and a trigger 10 is connected to one end of the link 7 via a pin 9. Is connected rotatably. The trigger 10 is inserted into the through holes 11 and 31 in advance, and the other end of the link 7 is rotated via a pin 16 between the rear end of the sickle 14 housed inside the trigger 10 and the front end of the settle link 17. Connect movably.

The rear end of the trigger 10 and the spring receiver 3
The trigger spring 12 is attached between the spring 3 and the spring 3, and the elasticity of the spring 12 urges the trigger 10 forward and accommodates the settle link 17 inside the spring receiver 33.

Next, the support shafts 25, 25 are inserted into the guide grooves 6 of the lock case 4 and the lock cover, and the swing block 23 is attached.
8 is inserted and its upper end is pushed into the inside of the peripheral wall 20. At this time, when the sliding door lock is used as an automatic lock, the concave 2
When the set spring 28 is attached to the lock 6 and used as a final lock, the set spring 28 is attached to the recess 27.

Of these, the set spring 2 is
8, the swing block 23 rotates about the support shaft 25 by the elasticity of the spring 28,
Are engaged with the engagement claws 21 to maintain the posture. This situation is as shown in FIG. 3, in which the swing block 23 is mounted slightly to the upper right.

On the other hand, when the set spring 28 is attached to the concave portion 27, the swing block 23 rotates around the support shaft 25 by the elasticity of the spring 28, and the curved surface portion 24 engages with the engaging claw 21. Then, the posture is maintained. This situation is as shown in FIG. 7, in which the swing block 23 is mounted slightly downward to the right, and the engagement between the engaging claw 21 and the engaging claw 22 is released.

When the sliding door lock thus assembled is mounted on the sliding door, the back set dimension L, that is, the distance from the center of the square hole 29 to the front panel 30 is adjusted according to the frame size of the sliding door. This adjustment is performed by inserting an appropriate tool into the square hole 29 and moving the swing block 23 in an appropriate direction.

That is, in the case of using an automatic lock, the tool is pushed and turned in an appropriate direction, and the swing block 23 is caused to move along with the tool so that the engagement between the engaging claw 21 and the engaging claw 22 is released. The swing block 23 is moved along the guide groove 6 via the shaft 25 to adjust the size. In the case of using the final lock, the tool is held, the tool is pulled in the length direction of the lock case 4, and the locking claw 22 is slid on the engaging claw 21 to adjust the dimensions.

After adjusting the back set dimension L in this manner, a mounting hole is carved in the frame of the sliding door based on the dimension, and a sliding door lock is embedded in the hole and mounted. In this case, lock case 4
Since it is cylindrical and has a smaller diameter than a conventional box-shaped one, the work of engraving the mounting hole becomes easier and the construction becomes easier.

Moreover, as described later, a single sliding door lock can be used to mount sliding doors of various sizes.
As in the past, various sliding door locks are manufactured for each backset size, and it is possible to eliminate the irrationality of stocking the locks and the complexity of management and handling.

The sliding door lock thus attached to the sliding door
In the case of using an automatic lock, the unlocking state is as shown in FIG.
That is, the trigger 10 is urged by the trigger spring 12 to protrude forward from the front plate 30, and instead, the sickle 14 and the settle link 17 are located at the rearmost position.
Are housed inside the trigger 10.

Further, the swing block 23 is urged to the upper right by a set spring 28 at the back set dimension L position as shown in the figure, and its latching pawl 22 engages with the engaging pawl 21 of the settle link 17. ing.

When locking the sliding door lock in such a situation, the sliding door is moved and pressed against a frame which is a door stop. By doing so, the trigger 10 is pushed back backward against the elasticity of the trigger spring 12, the link 7 rotates clockwise in FIG. 1 around the pin 8, and the sickle 14 and the settle link 17 move forward. As a result, the locking claw 21 protrudes from the groove 13 and engages in the trowel on the frame body side. This situation is as shown in FIG.

At this time, the back of the engaging claw 22 is pushed by the front slope of the engaging claw 21, and the swing block 23 slightly rotates clockwise around the support shaft 25 against the trigger spring 28. , Allow the settle link 17 to move forward. The projection 18 engages with the pin 8, and the sickle 14 rotates upward in the trocar with the pin 8 as a fulcrum.

When the sliding door is completely pressed against the frame, the trigger 10 retreats into the sliding door and the link 7
Is rotated by the maximum angle in the clockwise direction in FIG. 4, and the pin 16 is located at the forefront. For this reason, the sickle 14 is further rotated upward, and the locking claw 15 is positioned so as to be able to engage with the opening edge of the receiving seat in the trowel, and the lock is possible.

Further, the settle link 17 is pulled out to the forefront, and the engaging pawl 22 is engaged with the engaging pawl 21 to automatically lock the locked state. This situation is as shown in FIG.

On the other hand, when unlocking the sliding door lock,
By turning the thumb turn knob or the door handle (not shown), the square rod fitted into the square hole 29 is unlocked, that is, FIG.
It turns clockwise and holds this turning state. In this way, the swing block 23 rotates clockwise in FIG. 5, and the engaging pawl 22 releases the engagement with the engaging pawl 21.

For this reason, the trigger 10 is pushed forward by the elasticity of the trigger spring 12, the link 7 rotates counterclockwise in FIG. 5 around the pin 8, and the scythe 14 retreats while rotating downward. Then, the locking claw 15 releases the engagement with the opening edge of the seat and unlocks.

When the backset link 17 is pushed back together with the scythe 14 and returns to its original position, the thumb turn or door handle is released. In this manner, the swing block 23 is connected to the trigger spring 2
8, the engaging pawl 22 is engaged with the engaging pawl 21, and the state shown in FIG. 1 is restored.

As described above, when used as an automatic lock,
The locking claw 22 can be automatically locked by engaging the locking claw 22 with the engaging claw 21.

On the other hand, when the sliding door lock is used as the final lock, the unlocking state is as shown in FIG. That is, the trigger 10 is urged by the trigger spring 12 to protrude forward from the front plate 30, and instead the sickle 14 and the settle link 17 are located at the rearmost position, and the sickle 14
Is housed inside.

Further, the swing block 23 is urged rightward and downward by the set spring 28 at the position L of the back set as shown in the figure, and presses the curved surface portion 24 thereof onto the engaging claw 21 of the settle link 17. .

When locking the sliding door in such a situation, the sliding door is closed and pressed against the frame. In this manner, the trigger 10 is pushed backward against the elasticity of the trigger spring 12, and the link 7 rotates clockwise about the pin 8 in FIG.
Is pulled forward, and the locking claw 21 protrudes from the groove 13 and engages in the trowel on the frame side. This situation is shown in FIG.
It is like.

In this case, since the curved surface portion 24 is pressed onto the engaging claw 21 and the engagement between the hooking claw 22 and the engaging claw 21 is released, the settle link 17 moves forward freely.

When the sliding door is completely pressed against the frame, the trigger 10 retreats into the sliding door and the link 7
8 is rotated clockwise at the maximum angle in FIG. 8, the pin 16 is located at the forefront, and the settle link 17 is pulled out to the forefront. For this reason, the sickle 14 rotates further upward, and the locking claw 1
5 is positioned in the trowel so as to be able to engage with the opening edge of the seat, and becomes lockable.

After the above locking, the thumb turn knob or the door handle (not shown) is rotated, and the swing block 23 is rotated.
To engage the engaging pawl 22 with the engaging pawl 21 to lock the locked state. This situation is as shown in FIG.

On the other hand, when unlocking the sliding door lock,
The thumb turn knob or the door handle (not shown) is turned, and the square rod fitted into the square hole 29 is turned clockwise in FIG. By doing so, the curved surface portion 24 is positioned on the engagement claw 21, the engagement between the engagement claw 22 and the engagement claw 21 is released, and the settle link 17 can be moved forward and backward.

For this reason, the trigger 10 is pushed forward by the elasticity of the trigger spring 12, the link 7 rotates counterclockwise in FIG. 9 around the pin 8, and the scythe 14 retreats while rotating downward. Then, the locking claw 15 releases the engagement with the opening edge of the seat and unlocks.

When the settle link 17 is pushed back together with the sickle 14 and returns to its original position,
The state of FIG. 6 is restored. In this way, when used as a final lock, the locked state can be reliably locked via a thumb-turn knob or a turning operation of a door handle (not shown).

FIGS. 10 to 20 show another embodiment of the present invention, and the same reference numerals are used for parts corresponding to the above-described configuration. 10 to 15 show the second embodiment of the present invention.
In this embodiment, a settle link 17 is shown.
An engagement projection 34 is provided at the rear end of the swing link 35. The projection 34 is formed with a tapered engagement surface 34a inclined in the front-rear direction. Can be engaged.

The swing link 35 is formed of a spring member such as a stainless steel plate, and its rear end is fixed in the lock case 4 and is always arranged coaxially and planarly with the settle link 17. The front end of the moving link 15 can be abutted. The locking groove 3 is provided at the front end of the link 17.
6 is notched downward, and the front surface of the groove 36 is provided with the engaging surface 3.
A tapered locking surface 36a that can be engaged with 4a is formed.

A pair of push rods 37, 38 are arranged on one side of the front end of the swing link 35, in this embodiment, on both sides, facing each other, and these slide into sliding holes 40, 40 formed inside the frame of the sliding door 39. It is movably accommodated, and its inner end can be engaged with the swing link 35.

A push spring 41 is disposed between the lock case 4 in the embedding hole 40 and the step of the push rod 37, and the push rods 37, 3 are provided through the elasticity of the spring 41.
7 are urged outwardly, and their outer ends are engaged with a receiver 42 attached to the opening edge of the embedding hole 40.

The sliding door lock constructed as described above does not require the swing block 23, the square rod inserted into the block 23, and the thumb turn and the door handle associated therewith, as compared with the above-described embodiment. The internal structure of the case 4 is simplified, and assembly is simplified.

Further, since the thumb set and the door handle are not required, the back-set size is not restricted as in the prior art, so that the door puller can be attached to a desired position of the frame. In addition, the surface of the sliding door 39 is simply configured by merely exposing the door puller (not shown), the receiving metal, and the outer ends of the push rods 37 and 38, and is more in appearance than the one equipped with a thumb turn or a door handle. Is good.

Next, the unlocking state of the above-mentioned sliding door lock is as shown in FIG. 10, in which the trigger 10 projects forward of the front plate 30,
The locking claw 5 of the sickle 14 is pulled into the inside, the settle link 17 is retracted to the rear, and the locking protrusion 34 is engaged with the locking groove 36 of the swing link 35.

On both sides of the swing link 35, the distal ends of the push rods 37 and 38 are arranged separately, and the link 35 is positioned coaxially with the settle link 17 as shown in FIG. doing.

In order to lock the sliding door lock in such a situation, the sliding door is moved and pressed against the frame which is a door stop. In this case, the trigger 10 is pushed back backward against the elasticity of the trigger spring 12, the link 7 rotates clockwise in FIG. 10 around the pin 8, and the sickle 14 and the settle link 17 move forward. As a result, the locking claw 21 protrudes from the groove 13 and engages in the trowel on the frame body side.

At this time, the engaging surface 34a slides on the locking surface 36a and moves forward, and the swing link 35 is pressed to the side against the elasticity, which is displaced as shown by the imaginary line in FIG. Then, it engages with the side surface of the settle link 17. Also, the convex portion 1
8 engages the pin 8, and the sickle 14 pivots upward in the troyoke with the pin 8 as a fulcrum. This situation is as shown in FIG.

When the sliding door is completely pressed against the frame, the trigger 10 retreats into the sliding door and the link 7
14 is rotated clockwise at the maximum angle in FIG. 14, and the pin 16 is located at the forefront. For this reason, the sickle 14 is further rotated upward, and the locking claw 15 is positioned so as to be able to engage with the opening edge of the receiving seat in the trowel, and the lock is possible.

Then, when the settle link 17 is pulled out to the forefront and its rear end passes through the front end of the swing link 35, the engagement of the two links 17, 35 is released, and the swing link 35 becomes its own. It returns to its original position by elasticity, and its front end abuts against the rear end of the settle link 17 to prevent the link 17 from retreating and lock the locked state. This situation is as shown in FIG.

On the other hand, when unlocking the sliding door lock,
One push rod, for example, the push rod 36 may be pushed in from the outside of the sliding door 39. In this way, the tip of the push rod 36 engages with the swing link 35, and the link 35 is pushed and bent in the thickness direction against the elasticity, thereby releasing the engagement with the rear end of the settle link 17. I do.

For this reason, the trigger 10 is pushed forward by the elasticity of the trigger spring 12, and the link 7 rotates counterclockwise in FIG.
Is retracted while rotating downward, and the locking claw 15 releases the engagement with the opening edge of the seat and unlocks.

Further, the settle link 17 is pushed back together with the sickle 14, and the rear end engages the front end side surface of the swing link 35, and retreats while pushing and bending the link 35.
When the engagement surface 34a is guided to the engagement surface 36a and the engagement protrusion 34 engages with the engagement groove 36, the swing link 35 returns to the original position, and the state of FIG. 10 is restored.

FIGS. 16 and 17 show a third embodiment of the present invention. This embodiment proposes another form of the settle link 17 and the oscillating link 35 applied to the second embodiment. I have.

That is, an inclined engaging surface 34a which rises toward the distal end is formed on the upper surface of the engaging projection 34, and a locking groove 36 is cut off at the front end of the swing link 35, and the upper inner surface has a distal end. The inclined locking surface 36a descending to the side is formed to facilitate their configuration and manufacture.

The engagement area between the engagement surface 34a and the engagement surface 36a is increased to stabilize the engagement so as to achieve the stability at the time of unlocking, and the side of the settle link 17 at the time of the locking operation. The elasticity of the swing link 35 acting on the sickle 14 is avoided, and the burden is reduced and the locking operation of the sickle 14 is stabilized.

FIGS. 18 to 20 show a fourth embodiment of the present invention. This embodiment proposes another form of the swing link 35 applied to the second embodiment. That is, an elongated guide hole 43 is formed in the swing link 35,
An adjusting piece 44 composed of a bolt and a nut is provided in the hole 43 so as to be movable and adjustable. One end of the operating rod or wire 45 is attached to one side of the piece 44, in this embodiment, both sides, and the other end is attached to the surface of the sliding door 39. It is connected to an operation knob (not shown) provided, and when unlocking, the swing link 35 is displaced to the side by a push-pull operation of the operation knob to release the engagement with the settle link 17.

In this embodiment, the adjusting piece 44 is moved and adjusted in accordance with the size of the frame, so that the adjusting piece 44 can be mounted on the sliding door 39 of various sizes. The operation force required for the displacement of the link 35 can be reduced.

[0077]

As described above, according to the first aspect of the present invention, a link is rotatably connected to the inside of a lock case, a trigger is rotatably connected to one end of the link, and the other end of the link is provided. The sickle is connected rotatably to the sickle, and the sickle can be advanced in conjunction with the retreat of the trigger, so that the locking operation with the sickle can be performed automatically and quickly, and the troublesome operation such as the conventional thumb-turning operation can be performed. It is unnecessary and can be used easily. According to the second aspect of the present invention, a hollow cylindrical trigger having substantially the same diameter is housed in a tubular lock case so as to be able to protrude and retract, and a sickle is movably housed in the trigger and a sickle can be protruded and retracted at the front end of the trigger. Since such a groove is provided, the size and weight of the seed lock can be reduced, and the diameter of the engraving groove in which the lock is embedded can be reduced.

According to a third aspect of the present invention, a convex portion is provided at the rear end of the sickle, and when the sickle is advanced, the convex portion is engaged with a pivot of the link, and the sickle is rotatable about the pivot. Therefore, the locking operation of the sickle can be promoted. According to a fourth aspect of the present invention, the front end of the settle link is rotatably connected to the rear end of the sickle, a plurality of engaging claws are provided on the link, and the swing block linked to the thumb turn knob or the door handle is locked. Provided rotatably in the case,
The block is provided so as to be movable back and forth in parallel with the settle link, and the block is provided with a locking claw that can be engaged with the engagement claw, so that the backset dimensions can be freely adjusted, and sliding doors of various sizes can be provided. There is an effect that can be used according to the use. Therefore, the conventional absurdity of manufacturing and stocking various locks for each size of the sliding door can be eliminated, and productivity can be improved and management handling can be rationalized.

According to a fifth aspect of the present invention, when the sickle is advanced, the engagement between the engaging claw and the engaging claw is released, so that the settle link can be advanced. Is engaged to prevent the settle link from retreating, so that a ratchet mechanism that can move the link in a single direction, that is, forward can be configured. According to a sixth aspect of the present invention, the swing block is rotatably supported by the lock case, an elastic member is inserted between the block and the lock case, and the block is selectively rotated in either the left or right rotation direction. Because of the bias, one sliding door lock can be selectively used for the automatic lock or the final lock.

According to a seventh aspect of the present invention, the swinging block is urged in one of the right and left rotation directions to enable the engaging pawl and the engaging pawl to be engaged. Through engagement with
Since the retraction of the settle link can be prevented at the time of locking, it can be used as a reliable and safe automatic lock for automatically locking the locked state. The invention according to claim 8, wherein a curved surface portion is provided on the back surface of the hook claw, and the swing block is urged in one of the left and right rotation directions, and the curved surface portion is engaged with the engagement claw, and the settle is provided. Since the link can be moved forward and backward, it can be used as a final lock, which is locked through an operation such as thumb-turning after locking.

According to the ninth aspect of the present invention, when the rocking block is rotated in the locking direction at the time of locking and the settling link can be prevented from retreating through the engagement between the hooking pawl and the engaging pawl, Use as a lock can be realized. According to the tenth aspect of the present invention, since the rocking block is rotated to release the engagement between the locking claw and the engagement claw, and the locked state at the time of locking can be released, the unlocked state is quickly formed. can do.

According to an eleventh aspect of the present invention, the front end of the settle link is rotatably connected to the rear end of the sickle, the rear end of the link is provided with an engagement projection, and the link is swung inside the lock case. Since the link is provided, and the link is provided with a locking groove that can be engaged with the engagement protrusion, the conventional thumb-turn knob or door handle for actuating the trigger is not required, thus eliminating the problem of the conventional backset size. Thus, the door handle can be attached to a desired position of the frame regardless of the sliding door lock.

According to the twelfth aspect of the present invention, the engaging projection is engaged with the locking groove at the time of unlocking, and the rear end of the settle link can be engaged with the front end of the swing link at the time of locking. With the configuration, the locking and unlocking operation can be realized. According to a thirteenth aspect of the present invention, the engagement projection and the engagement groove are provided with an inclined engagement surface and an engagement surface which can be engaged with each other, and these can be engaged from the side of the swing link and the settle link. Therefore, the engagement between the relatively moving links can be easily realized, and the settle link can be automatically operated at the time of locking. Claim 1
In the invention of the fourth aspect, since the swing link is provided so as to be elastically displaceable, and the link is always arranged coaxially with the settle link, a locking mechanism can be realized with a simple configuration.

According to a fifteenth aspect of the present invention, a push rod is provided on at least one side of the swing link so as to be movable in the axial direction.
At the time of locking, the push rod is engaged with the swing link to elastically displace the link, and the engagement between the swing link and the settle link can be released, so that the unlocked state can be quickly formed. According to a sixteenth aspect of the present invention, a guide hole is formed in the front-rear direction of the swing link, an adjustment piece is provided along the hole so as to be adjustable, and one end of a push rod or a wire is connected to at least one side of the adjustment piece. Therefore, there is an effect that the lock release mechanism can be mounted at a desired position on the frame.

[Brief description of the drawings]

FIG. 1 is a front view showing an unlocked state according to a first embodiment of the present invention, in which a lock cover is opened and a part is shown in a sectional view.

FIG. 2 is an exploded perspective view showing a main part of the first embodiment.

FIG. 3 is an enlarged front view showing a main part of FIG. 1;

FIG. 4 is a front view showing an operation state of the first embodiment, in which a lock cover is opened and a part of the lock cover is shown in a cross-sectional view, showing an intermediate state of a locking operation.

FIG. 5 is a front view showing an operation state of the first embodiment, in which a lock cover is opened and a part is shown in a cross-sectional view, showing a locked state.

FIG. 6 is a front view showing an unlocked state according to a second embodiment of the present invention, in which the lock cover is opened and a part of the lock is opened to show a state at the time of unlocking;

FIG. 7 is an enlarged front view showing a main part of FIG. 6;

FIG. 8 is a front view showing an operation state of the second embodiment, in which a lock cover is opened and a part of the lock cover is shown in a cross-sectional view, showing an intermediate state of a locking operation.

FIG. 9 is a front view showing an operation state of the second embodiment, in which a lock cover is opened and a part of the lock cover is shown in a sectional view to show a locked state.

FIG. 10 is a front view showing a third embodiment of the present invention, in which a lock cover is opened and a part of the lock cover is shown in a sectional view to show a situation at the time of unlocking.

FIG. 11 is a perspective view showing a main part of a third embodiment.

FIG. 12 is a cross-sectional view showing a main part of the third embodiment, showing a mounting state of a push rod.

FIG. 13 is a cross-sectional view showing a main part of the third embodiment, showing an operation state of a swing link.

FIG. 14 is a front view showing an operation state of the third embodiment,
The lock cover is opened and a part of the lock cover is shown in a sectional view to show an intermediate state of the locking operation.

FIG. 15 is a front view showing an operation state of the third embodiment,
The lock cover is opened, and a part of the lock cover is shown in a cross-sectional view to show a locked state.

FIG. 16 is a perspective view showing a main part of a fourth embodiment of the present invention, showing a situation when a settle link and a swing link are unlocked.

FIG. 17 is a perspective view showing a main part of the fourth embodiment, and shows a situation when a settle link and a swing link are locked.

FIG. 18 is a perspective view showing a main part of a fifth embodiment of the present invention, showing a situation when a settle link and a swing link are unlocked.

FIG. 19 is a perspective view showing a main part of the fifth embodiment, and shows a situation when a settle link and a swing link are locked.

FIG. 20 is a cross-sectional view illustrating a mounting state of an adjustment piece applied to the fifth embodiment.

FIG. 21 is a perspective view showing a conventional example.

[Description of Signs] 4 Lock Case 7 Link 8 Axis 10 Trigger 13 Groove 14 Sickle 17 Settle Link 18 Convex 21 Engagement Claw 22 Hook Claw 23 Swing Block 24 Curved Surface 28 Elastic Member 34 Engagement Projection 35 Swing Link 36 Locking groove 37, 38 Push rod 43 Guide groove 44 Adjusting piece 45 Push rod or wire 36a Engaging surface 37a Locking surface

Claims (16)

[Claims] 1. A sliding door lock comprising a sickle attached to a lock case so as to be able to protrude and retract, and a trigger urged to come into contact with a door stop and housed in the lock case so as to be retractable. A link is pivotally connected, a trigger is pivotally connected to one end of the link, and a sickle is rotatably connected to the other end of the link, and the sickle is advanced in conjunction with the retraction of the trigger. Sliding door lock made possible. 2. A hollow lockable cylindrical trigger having substantially the same diameter is housed in a cylindrical lock case, and a sickle is movably housed in the trigger and a sickle is formed in a front end of the trigger. The sliding door lock according to claim 1 provided with: 3. A convex portion is provided at the rear end of the sickle, and when the sickle moves forward,
2. The sliding door lock according to claim 1, wherein the projection is engaged with a pivot of the link, and the sickle is rotatable around the pivot. 4. A front end of a settle link is rotatably connected to a rear end of a sickle, a plurality of engaging claws are provided on the link, and a swing block linked to a thumb turn knob or a door handle is used as a lock case. 2. The sliding door lock according to claim 1, further comprising a rotatable member, a block provided to be movable back and forth in parallel with the settle link, and a locking claw capable of engaging with the engaging claw. 5. When the sickle is advanced, the engagement between the engaging claw and the engaging claw is released to allow the settle link to move forward, and when the sickle is retracted, the engaging claw and the engaging claw are engaged. The sliding door lock according to claim 4, wherein the settle link can be prevented from retreating. 6. A swing block is rotatably supported by a lock case, an elastic member is interposed between the block and the lock case, and the block is selectively biased in one of right and left rotation directions. A sliding door lock according to claim 5. 7. A swing block is urged in one of right and left rotation directions so that a locking claw and an engagement claw can be engaged.
7. The sliding door lock according to claim 6, wherein the settle link can be prevented from retreating at the time of locking through the engagement between the locking claw and the engagement claw. 8. A curved surface portion is provided on the back surface of the locking claw, and the swing block is urged in one of right and left rotation directions to engage the curved surface portion with the engaging claw to move the settle link forward and backward. The sliding door lock according to claim 7, which is enabled. 9. The sliding door lock according to claim 8, wherein the rocking block is rotated in the locking direction during locking, so that the settle link can be prevented from retreating through the engagement between the hooking pawl and the engaging pawl. 10. The sliding door lock according to claim 7, wherein the swing block is rotated to release the engagement between the locking claw and the engagement claw, and the locked state at the time of locking can be released. . 11. A front end of a settle link is rotatably connected to a rear end of a sickle, an engagement projection is provided at a rear end of the link, and a swing link is provided inside a lock case. 2. The sliding door lock according to claim 1, wherein a link is provided with a locking groove capable of engaging with the engaging projection. 12. The locking projection engages with the locking groove when unlocking,
12. The sliding door lock according to claim 11, wherein a rear end portion of the settle link can be engaged with a front end portion of the swing link at the time of locking. 13. An engaging projection and an engaging groove provided with a slanted engaging surface and an engaging surface which can be engaged with each other, and these can be engaged from the side of the swing link and the settle link. Item 11. The sliding door lock according to Item 11. 14. The sliding door lock according to claim 11, wherein the swing link is provided so as to be elastically displaceable, and the link is normally arranged coaxially with the settle link. 15. A push rod engageable with the swing link is provided on at least one side of the swing link so as to be movable in the axial direction, and when the lock is locked, the push rod is engaged with the swing link to make the link elastic. 12. The sliding door lock according to claim 11, wherein the sliding door is displaced to release the engagement between the swing link and the settle link. 16. A method according to claim 1, wherein a guide hole is formed in the front-rear direction of the swing link, an adjustment piece is provided along the hole so as to be adjustable in position, and one end of a push rod or a wire is connected to at least one side of the adjustment piece. Item 11. The sliding door lock according to Item 11.