JPH0625504B2 - Sliding door lock - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sliding door lock for locking a sliding door, and in particular,
The present invention relates to a sliding door lock that can be easily applied and unlocked from both inside and outside of the sliding door, and that operates reliably even when there is a sliding door side inconvenience such as a vertical displacement of the inner and outer shoji due to misalignment of the building.

[Conventional technology and problems]

Generally, a sliding door lock includes a cylinder lock, a hook-shaped member usually called a hook, and a hook driving mechanism that engages or disengages the hook with the striker in conjunction with the rotation of the inner cylinder of the cylinder lock. It is provided and these are attached to the frame (frame part of the sliding door).

There are various types of sliding door locks depending on whether these cylinder locks, hooks or the like are attached to the outer frame or the inner frame, and they are put into practical use, but in particular, Japanese Utility Model Publication No. 58-21866. As described, attach a cylinder lock to the outer frame, and use the key from the outside to facilitate the unlocking operation, and also apply from the inside.
In order to facilitate unlocking, the one in which the hook and the hook driving mechanism are attached to the inner frame has a structure in which the movement of the inner cylinder of the outer lock side cylinder lock is transmitted to the inner frame side hook driving mechanism. The inner cylindrical body of the above is provided so as to be movable in the axial direction thereof, and when it is unlocked, the inner cylindrical body is pushed toward the inner frame side so that the deformed cross-section rod connected thereto is projected from the outer frame and It is inserted into a cam drive mechanism on the inner frame side having a modified receiving hole, and then the inner cylinder is rotated to swing the cam outward. In this type of sliding door lock, however, if the inner and outer shoji slides vertically due to improper construction, it will be difficult or impossible to insert the modified cross-section rod into the receiving hole. There is an inconvenience that the locking / unlocking operation cannot be performed. In addition, the inner cylinder of the cylinder lock is shortened by the required moving amount, and the key difference is reduced accordingly.

In order to eliminate these inconveniences, the present applicant has previously filed Japanese Patent Application No. 60-13951 (Japanese Patent Application Laid-Open No. 61-172975).
Then, we proposed a new sliding door lock in which the hook drive mechanism is provided separately for the outer and inner frames. This sliding door lock is provided with a pair of bars on the outer frame side so that it can project in the horizontal direction and the inner frame direction, and these bars selectively project in conjunction with the cylinder lock that is also provided on the outer frame when locking and unlocking. On the other hand, on the inner frame side, a seesaw type lever that is pushed by the tip of the bar and swings is provided, and the swinging of this lever causes the hook to appear and disappear, and it exhibits its intended function. Then, even if the inner and outer shoji slide a little in the vertical direction, it operates normally.

Since this sliding door lock moves the bar horizontally, the reaction force that pushes the seesaw-type lever acts in the direction of expanding the interval (so-called dust) between the inner and outer shoji screens, and rattles and shoji screens in the thickness direction of the shoji screen. If the elastic deformation occurs, the movement amount of the bar is reduced by that amount, and the seesaw lever may not operate reliably, which causes another inconvenience.

[Object of the Invention]

Therefore, an object of the present invention is to improve a sliding door lock provided with a hook on the side of the inner frame, eliminate the above-mentioned inconvenience, the up and down construction of the inner and outer shoji is wrong, and the guiding in the thickness direction of the shoji is possible. Another object of the present invention is to provide a sliding door lock that operates reliably even if there is elastic deformation due to insufficient rigidity of the shoji screen, and that can be easily locked and unlocked both outside and inside the sliding door.

[Means for solving problems]

In order to achieve the above object, the present invention locks a sliding door by hooking a hook having one end swingably supported by an inner frame and a hook-shaped portion formed at the other end by a strike plate attached to the outer frame. In this configuration, a drive plate that is engaged with the hook and is guided to be movable in the vertical direction in the inner frame, and that, in conjunction with the movement, swings the hook to the locked position or returns to the unlocked position, In the outer frame, an engaging projection that is provided to project from the drive plate and is exposed in the opening of the inner front plate that faces the strike plate, an inner operating member that is connected to the drive plate, and that operates the drive plate from the indoor side, The holder is guided so that it can move in the front-rear direction perpendicular to the strike plate, and the holder is biased rearward from the strike plate and the rear end is pivotally attached to this holder and swings within a vertical plane perpendicular to the strike plate. Movably supported At the same time, a pair of arms urged in the direction of expanding each other and a tail piece of irregular cross section are joined to the front end, and the inner cylinder body is guided so as to be movable forward and engages with the holder. It has a cylinder lock and a deformed hole that receives the tail piece at its front end and fits into it when the inner cylinder of this cylinder lock is advanced, and is rotatably supported in a plane parallel to the strike plate. The pinion, the rack plate that is engaged with the pinion and is guided so as to be movable in the vertical direction, and the rack plate and the pair of arms are interconnected, and interlocked with the upward or downward movement of the rack plate. And a connecting mechanism for selectively rotating the arm corresponding to this moving direction in a direction in which its front end approaches the other side, and when the holder advances together with the inner cylinder body of the cylinder lock, The front end of the arm By inserting the side front plate, characterized in that so as to sandwich the engaging projection of the driving plate.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is an inner front plate, and reference numeral 2 is a strike plate.

The inner front plate 1 is attached to the outer surface of an inner frame (not shown) so that the inner frame is sandwiched between the inner front plate 1 and the inner decorative plate 4 joined via the elongated box-shaped inner case 3. The inner case 3 is housed in an opening (not shown) that penetrates the inner frame in the thickness direction of the shoji. Similarly, the strike plate 2 is attached to the outer frame (not shown) together with the outer decorative plate 5. The inner front plate 1 and the strike plate 2 are relatively movable in the direction perpendicular to the paper surface in FIG.

Below the inside of the inner case 3, a hammer 7 is provided so as to be rotatable around a horizontal hammer shaft 6. The hook 7 in the illustrated embodiment is a member having a hook-shaped portion formed on one free end and having a substantially U-shape as a whole, and as shown in FIG. 1, the hook-shaped portion strikes when locked. Plate 2 hole 2
Enters a and restrains the relative movement of the inner and outer frames. As shown in FIG. 2, the comb 7 is generally formed by laminating a plurality of punched plates having the same shape.

It is the drive pin 9 carried by the drive plate 8 that moves the hammer 7. The drive pin 9 is loosely fitted in the irregular engagement hole 7a formed at the other free end of the hammer 7. . The drive plate 8 is a member formed by bending a plate material into a substantially U-shaped cross section, and has a back plate 8a and a pair of side plates 8b and 8b facing each other, and reciprocates in the inner case 3 in the vertical direction. It is movably incorporated. Both ends of the drive pin 9 are carried by the side plates 88b and 8b. Further, one end of a click spring 10 incorporated in the hammer 7 is elastically contacted with the drive pin 9.

Further, as shown in FIGS. 1 and 2, the central portions of the side edges of the side plates 8b of the drive plate are cut and raised in the directions in which they approach each other to form engaging projections 11, 11. The engagement projection 11 is exposed in the opening of the hood 12 by inserting it into a horizontal quadrilateral opening formed in a side plate of the hood 12 described below.

The hood 12 is a flat box-shaped body having an opening on one side, and as shown in FIG. 1, penetrates the inner front plate 1 and is guided so as to be movable in the inner and outer directions perpendicular to the inner front plate 1. Push pins 13 projecting from the inner surface (left side in FIG. 1) of each side plate can slide in a vertically long cam hole 14 that is inclined and opened to the side plate 8b of the drive plate that holds the hood 12 therebetween. Is engaged with. Therefore, when the drive plate 8 moves in the vertical direction, the wedge action generated between the push pin 13 and the cam hole 14 causes the hood 12 to move inward and outward, and when the drive plate 8 is locked, as shown in FIG. It is intended to prevent the engagement projection 11 from being operated from the gap between the inner front plate 1 and the strike plate 2 for the purpose of illegal unlocking by projecting outwardly from 1. However, the illegal unlocking operation as described above can be prevented by other means such as mounting a guard plate (not shown) on the inner frame or the outer frame, as in the door supported by the hinge. The hood 12 is not an essential constituent element of the present invention.

On the other hand, a plate-shaped inner operating member 15 is mounted on the inner decorative plate 4 so as to be movable in the vertical direction, and the operating rod 15a protruding on the outer surface side of the central portion thereof is a back plate of the inner case 3. An unnumbered vertically elongated slot opened in the above is inserted to penetrate the back plate 8a of the drive plate. As a result, the operating rod 15a
The drive plate 8 is integrally connected to the inner operating member 15 via the, and the drive plate 8 can be moved up and down from the indoor side by operating the knob 15b protruding from the inner operating member 15. You can

On the other hand, as shown in FIGS. 1, 3, and 4, between the strike plate 2 and the outer decorative plate 5 on the outer frame side,
A flat box-shaped outer case 16 integrally connected to the strike plate 2 is provided, and one side plate (the right side in FIG. 3 and the lower side in FIG. 4) of the outer case 16 is provided inside the outer case 16. Is
The holder 17 is attached to the strike plate 2 so as to be movable in the front-rear direction perpendicular to the strike plate 2. Holder 17 in the illustrated embodiment
Is a plate-like body having an outer shape as shown by a chain line in FIG. 1 and having an upper end bent as shown in FIGS. 1 and 3 to form a stepped portion. As shown in FIG. 4, both ends of a guide pin 18 implanted in the holder and an arm support shaft 19 which will be described later and integrally connected to the holder are connected to a horizontal guide length formed on a side plate of the outer case 16. It is slidably engaged with the hole 21 (FIG. 4).

The holder 17 includes a pair of arms 22-L and 22-U.
L is carried. Each arm 22 is, for example, as shown in FIG. 5, a member formed by bending a plate material in a U-shaped cross section in order to enhance rigidity, and the front end of the arm 22 is formed into a gutter shape to form a pair of sleeve parts. An arc-shaped escape hole 23 is open.
As will be described later, in FIG. 1, the upper arm is the locking arm 22-L and the lower arm is the unlocking arm 22-U.
Although used as L, in the illustrated embodiment, the same members are arranged vertically symmetrically, and an arm support shaft 19 that commonly penetrates through their rear ends (right end in FIG. 1, left end in FIG. 5) These arms 22-L and 22-UL are attached to the holder 1
It is rotatably pivoted on 7.

With the configuration described above, the pair of arms 22-L, 22-U
L is rotatably supported in the vertical plane perpendicular to the strike plate 2, but in order to reduce the rattle in the thickness direction of these arms and to hold the connecting pin described below, As shown in FIG. 1, FIG. 3 and FIG. 4, an elongated actuating frame 24 formed by bending a plate material into a U-shaped cross section is arranged outside the arms 22 and 22.
Also penetrates the rear end of the operating frame 24. Therefore, like the arms 22 and 22, the actuation frame 24 is also pivotally attached to the holder 17 via the arm support shaft 19 so as to be rotatable.

As shown in FIGS. 1 and 4, a connecting pin 25 is held at the front end of the operating frame 24 so as to pass through it, and the connecting pin 25 is connected to the arms 22-L, 22.
It is also commonly inserted in the escape holes 23, 23 in which the ULs overlap each other.

Further, the elastic force of the arm spring 26, which is a torsion coil spring wound around the arm support shaft 19, urges the pair of arms 22-L and 22-UL in the directions of expanding each other. In the state, as shown in FIG. 1, the opening end edge of the escape hole 23 of the expansion arm 22 is locked to the connecting pin 25, and the angular position shown in FIG.

Furthermore, as shown in FIG.
Holder spring 2 as a torsion coil spring locked to 6
The other end of 7 elastically contacts the arm support shaft 19 from the front. Therefore, due to the elasticity of the holder spring 27,
The holder 17, the pair of arms 22-L, 22-UL, the actuating frame 24, and the like are biased rearward, but in a normal state where no other external force acts on the holder 17, the holder 17 is a back plate of the outer case 16. To maintain the position shown in FIG. At this time, the front ends of the arms 22-L and 22-UL are arm projecting holes 28 opened in the strike plate 2 (see FIG. 1).
The dimension of each arm 22 in the front-rear direction is set so as to face the vicinity.

On the other hand, as shown in FIG. 1, a cylinder lock generally designated by 29 is attached to the upper end of the outer case 16. The cylinder lock 29 in the illustrated embodiment has a rectangular outer cross section (see FIG. 6) and an outer cylinder block 31 having a stepped portion at the center of the inner peripheral surface, and a square cross section at the front end (left end in FIG. 1). It is a so-called disc tumbler lock having an inner cylinder 33 in which the tail piece 32 is provided in a protruding manner.

An enlarged diameter portion 31b is continuously provided in front of the inner hole 31a (see FIG. 6) of the outer cylinder block 31 (on the left side in FIG. 1), and the inner hole 31a and the enlarged diameter portion 31b extend vertically. An engaging groove 31c is formed in the. On the other hand, as shown in FIGS. 1 and 6, at the front end of the inner cylindrical body 33, first and second projecting pieces 33a and 33b protruding in the radial direction are integrally formed. In the locked state of the cylinder lock shown in FIG. 6, the first protrusion 33a is engaged with the locking groove 31c of the outer cylinder block (FIG. 6).
Further, as shown in FIG. 1, the second protruding piece 33b is the same as the protruding piece cut and raised at the upper end of the holder 17.
It is inserted between the tumbler locking pin 34 and the tumbler locking pin 34, which is planted at the upper end of 7. Furthermore, as shown in FIG.
The tumbler of the inner cylindrical body 33 is engaged with the step portion formed on the inner peripheral surface of the outer cylindrical block 31 from the rear side.

On the other hand, as shown in FIGS. 1 and 3, the rear surface (inner surface) of the strike plate 2 in front of the tail piece 32.
On the side, a pinion 35 having a deformed hole (a square hole in the embodiment shown in FIG. 6) 35a for receiving the tail piece 32 and fitting the tail piece 32 at a predetermined distance from the front end of the tail piece 32 is rotatable. Is supported by.

Further, in front of the inner surface of one side plate (the side plate on the left side in FIG. 3) of the outer case 16, as shown in FIGS. 1 and 3, an L-shaped rack plate 36 having an elongated overall shape is arranged in the vertical direction. Is movably guided, and its upper end engages with the pinion 35, and its lower end engages with the connecting pin 25 via a horizontal guide slot 36a. With the configuration described above, the rack plate 36 and the holder 1
7 means that even if the latter moves in the front-rear direction, they are integrally connected in the up-down direction.

[Work]

In the sliding door lock according to the embodiment of the present invention configured as described above, in the locked state shown in FIG. 1, the hook 7 is inserted into the hook hole 2a of the strike plate, so that the outer frame and the inner frame are on the paper surface. Not only in the direction, but also in the lateral direction in FIG. Therefore, it is impossible to remove the hook 7 by utilizing the elastic deformation of the frame.

When the compound key 37 (see FIG. 7) is inserted into the key hole of the cylinder lock 29 for unlocking, the entire tumbler aligns with the shear line, and the inner cylinder 33 becomes rotatable, and at the same time, one outer cylinder of the tumbler is rotated. The engagement with the inner peripheral surface step portion of the block 31 is released, and the inner cylindrical body 33 becomes movable forward (not shown).
When the duplicate key 37 is turned in this state, as is apparent from FIG. 6, the first protrusion 33a of the inner cylinder body is locked by the locking groove 3 of the outer cylinder block.
Since it abuts against the side wall of 1c, the inner cylinder 33 cannot be rotated as it is.

Therefore, as shown in FIG. 7, the inner cylinder body 33 is pushed forward without rotating with the duplication key 37 inserted in the key hole. Then, since the front end surface of the inner cylinder 33 engages with the upper end of the holder 17, the inner cylinder 33 and the holder 17 integrally move forward against the elastic force of the holder spring 27, and finally, FIG. As shown in FIG. 5, the tail piece 32 of the inner cylinder fits the pinion 35 into the deformed hole, and the locking and unlocking arms 22-L and 22-U are inserted.
The front end portion of L fully projects from the arm projecting hole 28 of the strike plate.

As is apparent from FIG. 1, these arms 22-L,
The 22-UL enters the hood 12 in the inner case 3 and faces the hood 12 with the engagement protrusion 11 provided on the drive plate 8 interposed therebetween.

Further, at this time, since the first protruding piece 33a shown in FIG. 6 is advanced to the expanded diameter portion 31b of the outer cylinder block,
The inner cylindrical body 33 becomes rotatable.

Therefore, as shown in FIG. 8, when the compound key 37 is turned counterclockwise as viewed from the operator side, the tail piece 32 and the inner cylindrical body 33 as well as the pinion 35 also rotate in the same direction, and the rack plate that meshes with this 36 rises. Then, the connecting pin 25 also rises while moving horizontally along the guide elongated hole 36a (FIG. 1) opened in the rack plate, and resists the elastic force of the arm spring 26 to move the unlocking arm 22-UL to the eighth position. Rotate clockwise in the figure. At this time, the locking arm 22-L maintains the angular position shown in FIG. 8 in a state where the arm protruding hole 28 is elastically contacted with the upper opening edge of (FIG. 7) by the elastic force of the arm spring 26, and the unlocking arm 22-L is unlocked. Only rotate.

Then, the front end portion of the unlocking arm 22-UL pushes up the drive plate 8 via the engagement projection 11, and the drive pin 9 planted in the drive plate 8 rises, so that the hook 7 moves clockwise in FIG. The hook portion is rotated to be pulled out from the hook hole 2a of the strike plate, and the sliding door lock is unlocked.

After unlocking, the inner cylinder 33 is rotated clockwise to the angular position shown in FIG. 7 to loosen the hand holding the duplicate key 37. Then,
Due to the elastic force of the holder spring 27, the holder 17 and the inner cylindrical body 33 are integrally moved backward and returned to the position shown in the first figure. After that, when the compound key 37 is pulled out from the key hole, the inner cylinder inside 33 is locked to the stepped portion formed on the inner peripheral surface of the outer cylinder block 31, as shown in FIG.

In order to lock the sliding door lock in the unlocked state, as in the case of the unlocking, after inserting the compound key 37 into the key hole, the inner cylinder is pushed forward so that the tail piece 32 becomes the deformed hole of the pinion 35. Fit them (see FIG. 7), and as shown in FIG. 9, turn the compound key 37 clockwise. Then, as is apparent from FIG. 9, the rack plate 36 descends, and the rack plate 36 is connected to the connecting pin 25.
The tip of the locking arm 22-L is pushed down via. Then, the driving plate 8 which is driven by the locking arm 22-L and descends swings the hook 7 outward, and the hook portion thereof is inserted into the hook hole 2a of the strike to lock the sliding door lock. After locking, the inner cylindrical body 33 is returned to the original angular position and the compound key 37 is pulled out, and the state shown in the first illustration is obtained.

It should be noted that when the inner key 33 is released while rotating the inner cylinder 33 for locking or unlocking, as is apparent from FIG.
And the holder 17 tries to move rearward, but as is clear from FIG. 6, the first protrusion 33a is engaged with the step portion formed at the boundary between the inner hole 31a and the expanded diameter portion 31b of the outer cylinder block. It will be stopped and will not return to its original position.

Further, as shown in FIG. 7, when the inner cylindrical body 33 is not rotated, the second projecting piece 33b is sandwiched between the upper end of the holder 17 and the tumbler locking pin 34,
Therefore, since the inner cylindrical body 33 and the holder 17 are integrally connected, the inner cylindrical body 33 alone returns to the axial position shown in the first illustration, and the arms 22 and 22 are in a protruding state. It can be prevented.

Furthermore, as is apparent from FIG. 1, the locking / unlocking operation described above can be performed independently of the mechanism inside the outer case 16 by operating the knob 15b of the inner operating member 15 from the room. Of course.

[Effect]

As is apparent from the above description, the present invention relates to a sliding door lock in which a hook is provided on the inner frame side, and an inner cylinder body of a cylinder lock that needs to be moved in the axial direction in terms of a mechanism, and a tail piece thereof. Since the pinion to be installed is provided in the same outer case, the relative positional relationship between the two can be kept unchanged, and therefore the locking and unlocking operation will not be affected even if the vertical shoving causes the inner and outer shoji to shift in the vertical direction. .

Further, since the locking / unlocking arm swings in the vertical plane, the operating reaction force acts in the vertical direction. Therefore, even if elastic deformation occurs due to rattle in the thickness direction of the shoji screen or insufficient rigidity, locking and unlocking can be reliably performed.

Furthermore, since the movement of the tip of the arm can be greatly taken,
The gap between the arm and the engaging projection of the drive plate can be increased, and thus the vertical displacement of the shoji can be absorbed. Various effects are exhibited.

[Brief description of drawings]

FIG. 1 is a sectional view showing a locked state of a sliding door lock according to an embodiment of the present invention, FIG. 2 is a front view of an inner front plate mounting portion of an inner frame, and FIG. 3 is a longitudinal sectional view of an outer case inner mechanical portion. FIG. 4 is a cross-sectional view thereof, FIG. 5 is a perspective view showing an assembled state of the locking / unlocking arm, FIG. 6 is a front view of a cylinder lock, and FIGS. 7 to 9 are of a sliding door lock of the present invention. A sectional view for explaining the operation,
Some of the members are omitted for clarity of the drawing. 1 ... inner front plate, 2 ... strike plate, 3 ... inner case, 7 ... comb, 7a ... engaging hole, 8 ... driving plate, 9 ... driving pin, 11 ... engaging protrusion, 15 ... Inner operation member, 17 ... Holder, 22 ... Arm, 23 ...
Escape hole, 25 ... Connection pin, 26 ... Arm spring, 27
...... Holder spring, 29 ...... Cylinder lock, 31 ...... Outer cylinder block, 32 ...... Tail piece, 33 ...... Inner cylinder, 35
...... Pinion, 35a …… Deformed hole, 36 …… Rack plate,
36a ... Guide slot.

Claims (2)

[Claims] Claim: What is claimed is: 1. One end of an inner frame is swingably supported, and the other end of which a hook-shaped portion is formed is hooked on a strike plate attached to the outer frame to lock a sliding door. A drive plate that is engaged with the sickle and is guided so as to be movable in the up-down direction in the inner frame, and that interlocks with the movement to swing the sickle to the locking position or return to the unlocking position, and to project from the drive plate. An engaging protrusion exposed in the opening of the inner front plate facing the strike plate, an inner operating member connected to the drive plate for operating the drive plate from the indoor side, and a front-rear direction perpendicular to the strike plate in the outer frame. And a holder biased rearward away from the strike plate and a rear end pivotally attached to this holder, and swingably supported within a vertical plane perpendicular to the strike plate. Expand each other A pair of arms which are biased in a direction,
A cylinder lock that has a tail piece with an irregular cross section coupled to the front end, is guided so as to be movable forward, and has an inner cylindrical body that engages with the holder, and when the inner cylindrical body of this cylinder lock advances, the front end A pinion that has a deformed hole that accepts and fits the tail piece and is rotatably supported in a plane parallel to the strike plate, and is engaged with the pinion and is guided so as to be vertically movable. The rack plate, the rack plate and the pair of arms are interconnected, and in conjunction with the upward or downward movement of the rack plate, the arm corresponding to this moving direction is selectively and its front end is When the holder moves forward together with the inner cylinder of the cylinder lock, the front ends of the pair of arms pass through the inner front plate and engage the engagement protrusions of the drive plate. I put it between Sliding door lock according to claim. 2. The connecting mechanism includes a horizontal guide elongated hole opened in a rack plate, an arc-shaped escape hole opened in an arm, and a connecting pin commonly inserted in these escape holes and guide elongated holes. The sliding door lock according to claim 1, characterized by having.