JP4567434B2 - Sliding door lock - Google Patents

Description

  The present invention relates to a sliding door lock, and more particularly to a sliding door lock that can be automatically locked just by closing the door.

   Conventionally, as this type of sliding door lock, for example, a sliding door lock described in Japanese Utility Model Publication No. 57-110260 (Patent Document 1) according to the application of the present applicant is known.

  The one shown in FIG. 3 of the above-mentioned Patent Document 1 is a trigger that has a rack in a part thereof while being retracted by being in contact with a frame or a pillar at the time of closing and being normally biased in a protruding direction, A lock rod (sickle body) having a pinion meshed with the rack of the trigger and an engaging portion that engages with a locking portion of a locking piece, which will be described later, and a locking piece that operates by an inertial force at the time of closing, And a sliding piece that is moved up and down by a key operation or thumb turn operation on the cylinder.

   And, when the door is closed, the trigger comes in contact with the frame or the pillar and retracts so that the lock rod protrudes by the meshing action of the rack of the trigger and the pinion of the lock rod, and the other side receives the lock hole. Engaged and locked. On the other hand, when the door is opened, the trigger protrudes, whereby the lock rod is retracted and unlocked by the meshing action of the rack and the pinion.

  In addition, when the lock rod is in the locked state, the sliding piece is moved upward by the key operation or thumb turn operation on the cylinder, so that the engaging portion of the sliding piece is engaged with the engaging portion of the lock rod. The lock rod is prevented from retreating and can be brought into the locked state.

  With the above configuration, when the door is closed, the door tries to move in the opening direction due to the reaction force that the door hits the frame or pillar of the other party. Since the locking portion of the locking piece and the engaging portion of the lock rod are engaged to prevent the lock rod from moving backward, the door is not moved in the opening direction, and rebound when the door is closed can be prevented. it can.

However, in order to lock the door in the closed state, as described above, it is necessary to move the sliding piece up by manual operation of the key to the cylinder or manual operation of the thumb turn, which is troublesome and troublesome. There was a problem.
Japanese Utility Model Publication No. 57-110260

  In order to solve the above-described conventional problems, the present invention not only prevents rebounding when the door is closed, but also when the lock is locked in the closed state, the trigger is retracted without manual operation as in the prior art. It is an object of the present invention to provide a sliding door lock in which a dead hub is interlocked via a transmission mechanism to project a lock rod so that the lock can be automatically performed.

In order to achieve the above object, the sliding door lock according to claim 1 of the present invention includes a trigger that is retracted in contact with a receiver such as a frame or a pillar when closed, and is normally biased in a protruding direction, and a transmission mechanism. A lock lever that protrudes by retreating the trigger and retreats by the protrusion of the trigger, and a dead hub that engages with a notch formed at the rear of the lock rod and is operated by an operation member such as a cylinder or thumb turn. A first click member that stably holds the dead hub in a locked state and an unlocked state, and when the door is closed, when the trigger abuts against a receiving member such as a frame or a column and retracts to an allowable position, together with engages the receiving hole provided in the receiving such projected to a frame or column via the transmission mechanism, the Deddohabu and the first click member is a sliding door lock that is so as to prevent retraction of Jo杆,
The transmission mechanism includes a first rocking body having a part connected to the trigger and the other part pivotally supported by a lock case by a pivot, a second rocking body and a second click member connected to the first rocking body by a connecting pin. And an engagement pin provided on the lock rod, one end pivotally supported by the lock case, and the other end having an engagement receiving portion engaged with the engagement pin. A stopper that is urged by a stopper spring in a direction to release the engagement with the pin, and when the door is opened, the trigger protrudes and the lock is retracted, and the engagement receiving portion of the stopper is It is provided to engage with the engaging pin, and in the protruding state of the trigger, it is configured so that the dead hub cannot be operated in the locking direction by an operating member such as a cylinder or thumb turn. In contact with the receiver By retracting, the engagement receiving portion of the stopper is disengaged from the engagement pin provided on the lock rod, and the first rocking body is rotated in the locking direction with the pivot as a fulcrum, and the second rocking member is The moving body is rotated in the locking direction with the connecting pin as a fulcrum, and the engaging portion of the second rocking body is engaged with the engaging pin provided on the locking rod, and the locking rod protrudes in the locking direction. In the fully projecting state, the engaging portion of the second oscillating body is disengaged from the engaging pin by the operation of the second click member and the first oscillating body, and the engaging portion of the dead hub is the first click. It is configured to be automatically locked so as to prevent the lock rod from being retracted by being engaged with the front position of the notch portion of the lock rod by the operation of the member, and in order to change from the locked state to the unlocked state, by the operation member such as a thumb turn rotates the Deddohabu the unlocking direction The engaging portion of the dead hub is engaged with the rear position of the notch portion of the lock rod by the operation of the first click member while the lock rod is retracted, and the lock lever can be retracted and opened. The first rocking body and the second rocking body rotate in conjunction with the protrusion of the trigger by the trigger spring, while the engagement receiving portion of the stopper is provided on an engagement pin provided on the lock rod. It is characterized by being able to be opened by being engaged.

  Here, “receiving the frame or pillar” means that the receiving hole is formed directly on the frame or the pillar itself, or the receiving member is attached to the frame or the pillar as generally used. This means a case where a reception is made by providing (a seat, a box holder, etc.) and is understood in a broad sense.

The lock rod is preferably composed of a dead hub engaging notch at the rear, a dead bolt having a recess at the front end, and a sickle piece pivotally supported by the recess of the dead bolt .
According to this, the sliding door lock which has the strength and strength which were strong in the double structure of the deadbolt and the sickle piece, and was excellent in crime prevention can be provided.

According to the sliding door lock of the first aspect, the dead hub engaged with the notch portion of the lock rod is provided with the first click member that stably holds the dead hub in the locked state and the unlocked state. When the trigger is brought into contact with the frame or column holder and retracted to the permissible position, the lock rod protrudes through the transmission mechanism and engages with a receiving hole provided in the frame or column holder. Since the dead hub and the first click member prevent the lock rod from moving backward, when the door is closed, the dead hub and the first click member prevent the lock rod from moving backward by simply closing the sliding door. In addition to automatically and reliably locking the door, it is possible to prevent the door from rebounding when the door is closed.

According to the sliding door lock of claim 1 , as the transmission mechanism, the first swing body, the second swing body and the second click member connected to the first swing body, the engagement pin provided on the lock rod, and the stopper When the door is opened, the trigger protrudes and the lock rod retreats, and the engagement receiving portion of the stopper is provided to engage with the engagement pin of the lock rod. Since the dead hub cannot be operated in the locking direction by an operating member such as a cylinder or thumb turn, the lock does not protrude when the door is opened, so it is safe to prevent clothes from being caught or injured. Sliding door locks can be provided.

In addition, when the door is closed, the trigger is brought into contact with the receiving of the frame, the pillar, or the like and retracted, whereby the engagement receiving portion of the stopper is disengaged from the engaging pin provided on the lock rod, and the first The oscillating body is rotated in the locking direction with the pivot as a fulcrum, and the second oscillating body is rotated in the locking direction with the connecting pin as a fulcrum, and the engaging pin of the second oscillating body is provided on the lock rod. the engagement while engaging Ki has protruded a Jo杆the locking direction, the engaging portion of the second rocking body is in a state where the lock rod is fully extended by operation of the second click member and the first rocking body The engagement with the pin is released, and the engagement portion of the dead hub is automatically locked so as to be engaged with the front position of the notch portion of the lock rod by the operation of the first click member to prevent the lock rod from retreating. The lock is automatically and reliably locked just by closing the sliding door. .

Further, in order to change from the locked state to the unlocked state, the dead hub engaging portion is first clicked while the dead hub is rotated in the unlocking direction by an operation member such as a cylinder or thumb turn, and the lock rod is moved backward. By engaging the rear position of the notch of the lock rod by the operation of the member, the lock rod can be retracted to open the door, and the trigger protrudes by the trigger spring, and in conjunction with the protrusion of the trigger by the trigger spring Since the first rocking body and the second rocking body rotate, and the engagement receiving portion of the stopper is engaged with the engagement pin provided on the lock rod so that the door can be opened, the unlocking operation is easy. Can be done reliably and can be opened.

An embodiment of the present invention will be described below with reference to FIGS.
Reference numeral 1 denotes a lock case composed of a lock case body 1a and a case lid (not shown), and this lock case 1 is attached to the front end side of the sliding door i with a screw 2 or the like. A front back plate 1c is fixed to the front surface of the lock case 1, and a front plate 3 is fixed to the front surface of the front back plate 1c with screws 4 or the like. The front back plate 1c and the front plate 3 are formed with a trigger door 5 and a lock door 6.

  In the lock case 1, the trigger spring 11 provided at the rear is always urged so as to protrude freely in and out of the trigger 5, and when the door is closed, it is directly applied to the other party's frame or pillar 2 itself. Alternatively, a trigger 10 that is retracted in contact with a receiver 100 provided indirectly via a receiving member 101 provided on a frame or pillar is fitted.

  The trigger 10 has an outline as schematically shown in FIG. Through holes 13 and 13 are formed from the front side to the back side in FIG. 5 at the front and rear portions of the horizontal base plate 12, and trigger pins 14 and 14 are inserted into the through holes 13 and 13, Both end portions of the trigger pins 14, 14 can be moved forward and backward through elongated guide grooves 1 d, 1 d formed on both side walls of the lock case 1. Further, another trigger pin 16 is implanted in the mounting hole 15 formed in the substantially central portion of the horizontal base plate 12. Further, a projection 17 having an inclined surface 17a and a top surface 17b is provided on the front portion of the horizontal base plate 12, and the top surface 17b of the projection 17 moves while sliding on the lower surface of a stopper 22 described later. It has come to be. A spring mounting portion 18 having a U-shaped cross section for fitting the trigger spring 11 between the rear side wall 1e of the lock case 1 is connected to the rear portion of the horizontal base plate 12.

  Further, in the lock case 1 above the trigger 10, via the transmission mechanism 20, the lock lock door 6 protrudes in a lockable manner by retracting the trigger 10 and retreats by the protrusion of the trigger 10. 30 and a dead hub 40 that engages with a notch 31 formed at the rear of the lock rod 30 and is operated by an operation member such as a cylinder or a thumb turn.

The lock rod 30 is not particularly limited in the present invention, but in this embodiment, a dead bolt 33 having a notch 31 for engaging the dead hub 40 at the rear and a recess 32 at the front end, and the dead bolt 33 It consists of a sickle piece 34 pivotally supported by a pivot 35 so as to be rotatable in the recess 32.
Slotted guide holes 37, 37 are formed from the center part to the rear part of both side walls of the dead bolt 33, and a guide bar 38 fixed horizontally to the lock case 1 is inserted between the guide holes 37, 37. Thus, the dead bolt 33 can move without rattling.
The base end surface 34a of the sickle piece 34 is rotated about the pivot 35 so that the lower end surface 51 of the sickle piece regulating member 50 is slidably contacted, and the base of the sickle piece 34 is locked when the door is locked. The end surface 34 a is positioned by the lower end surface 51 of the sickle piece regulating member 50 so that the locking portion 34 b on the distal end side of the sickle piece 34 is locked in the receiving hole 102 of the receiver 100. Reference numeral 52 denotes a cover of the sickle piece regulating member 50. The sickle piece regulating member 50 is fixed between the both side walls of the lock case 1 with mounting posts 53 (see FIGS. 1 to 4 and FIGS. 9 to 13). Reference numeral 54 denotes an insertion hole for the mounting column 53.

  The base end portion of the dead hub 40 is fitted into a dead hub support 41 and the dead hub support 41 is fixed between the both side walls of the lock case 1 by mounting posts 42. A hub hole 43 is formed in the base end portion of the dead hub 40, and an operation shaft (not shown) operated by an operation member such as a cylinder or a thumb turn (not shown) is fitted into the hub hole 43. Yes.

  The engaging portion 44 of the dead hub 40 engaged with the notch 31 of the lock rod 30 is provided with the other end 62 of the first click member 60 that pivotally supports one end 61 on the lock case 1. The connecting pins 63 are connected. The first click member 60 is provided with a click motion spring (hereinafter abbreviated as a click spring) 64 between one end 61 and the other end 62.

  Accordingly, when the trigger 10 is brought into contact with the frame 100 or column holder 100 and retracted to the allowable position when the door is closed, the lock rod 30 protrudes via the transmission mechanism 20 and receives the frame 100 or column holder 100. The dead hub 40 and the first click member 60 prevent the lock rod 30 from retreating and enter the locked state.

Next, the transmission mechanism 20 will be described below.
The transmission mechanism 20 includes a first rocking body 70 having a part connected to the trigger 10 and the other part pivotally supported on the lock case 1 by a pivot 71, and a second rocking body connected to the first rocking body 70 by a connecting pin 81. The moving body 80 and the second click member 90, the engagement pin 36 provided on the lock rod 30, and the engagement receiving portion that is pivotally supported at one end on the lock case 1 and engaged with the engagement pin 36 at the other end. And a stopper 22 urged by a stopper spring 24 in a direction to release the engagement receiving portion 23 from being engaged with the engagement pin 36 at all times.

The first rocking body 70 has a general shape as shown in FIG. Therefore, description will be made with reference to FIG. 6 and FIG.
One end of the first rocking body 70 is provided with a pin 72 that is inserted into a communication hole 91 formed at the upper end of the second click member 90, and the trigger 10 is positioned slightly above the pin 72. A long hole-shaped guide hole 73 into which the trigger pin 16 implanted in is inserted is formed. The guide hole 73 not only connects the trigger 10 and the first rocking body 70 by inserting the trigger pin 16, but also the first rocking body 70 rotates the pivot 71 in conjunction with the movement of the trigger 10. It plays a role of regulating the rotation as the center of movement. The pivot 71 is pivotally mounted between both side walls of the lock case 1, and a through hole 74 is formed on the other end side (upper end side) slightly from the pivot 71, and the through hole 74 and the second rocking body are formed. The first oscillating body 70 and the second oscillating body 80 are connected by inserting the connecting pin 81 into the through hole 82 of the 80.

  Since the second rocking body 80 is configured as shown in FIG. 7, the description will be made along FIG. 7. The through hole 82 is formed in the middle position of the second rocking body 80. The upper end portion is provided as an engaging portion 83 for engaging with the engaging pin 36 of the lock rod 30, and the first rocking body 70 and the second oscillating body 70 are provided on the left side wall between the engaging portion 83 and the through hole 82. A spring receiving portion 84 for projecting a part of the spring 75 wound around the connecting pin 81 for connecting the rocking body 80 is provided. As shown in FIG. 1, the second oscillating body 80 is urged by the spring 75 so as to rotate clockwise around the connecting pin 81 as shown in FIG. That is, in the unlocked door state, the engagement portion 83 of the second swing body 80 is disengaged from the engagement pin 36 (see FIG. 1).

  The second click member 90 is configured in the same manner as the first click member 60, and the side opposite to the communication hole 91 is pivotally supported on the lock case 1 by a fixing means 92, A spring for click motion (hereinafter abbreviated as “click spring”) 93 is provided between the communication hole 91 and the communication hole 91.

  The stopper 22 engages the engagement pin 36 of the lock rod 30 and the engagement receiving portion 23 of the stopper 22 when the door is unlocked to prevent the lock rod 30 from being accidentally projected, When the door 10 is brought into contact with the receiver 100 such as a frame or a column to lock the door, the engaging portion 83 of the second rocking body 80 is engaged with the engaging pin 36 in conjunction with the backward movement of the trigger 10. Thus, the lock rod 30 is projected.

Since the stopper 22 is configured as shown in FIG. 8, this will be described with reference to FIG.
That is, a stepped cylindrical portion 25 is formed in the front portion of the stopper 22, and small diameter portions 25 a and 25 a at both ends of the cylindrical portion 25 are fitted to both side walls of the lock case 1. Further, the engagement receiving portion 23 is formed at the rear portion of the stopper 22, and a stepped plate portion 26 is formed from the cylindrical portion 25 to the middle as viewed from the left side in FIG. The stopper spring 24 is provided from the cylindrical portion 25 to the stepped plate portion 26, and the stopper 22 releases the engagement receiving portion 23 from engaging with the engaging pin 36 at all times by the stopper spring 24. It is energized in the direction to do. In addition, the stopper 22 prevents the protrusion 10 of the trigger 10 from protruding beyond a certain amount when the protrusion 17 of the trigger 10 is locked to the cylindrical portion 25, and serves as a guide surface for the protrusion 17. Also works.

The effect | action of this invention which consists of the above structure is demonstrated below.
When the door is opened, that is, when the sliding door is opened as shown in FIG. 1, the trigger 10 projects forward by a predetermined dimension from the front plate 3 by the urging force of the trigger spring 11 and interlocks with the movement of the trigger 10. Through the action of the transmission mechanism 20, the lock rod 30 is retracted and stored in the lock case 1 and is unlocked.

   In this open door unlocked state, as shown in FIG. 1, the trigger pins 14, 14 move to the front end positions of the guide grooves 1 d, 1 d of the lock case 1 by the protrusion of the trigger 10 forward, The trigger pin 16 is located at a point a of the guide hole 73 of the first rocking body 70, and the second click member 90 projects in the direction in which the trigger 10 protrudes (fixed) via a pin 72 that is a connection point with the first rocking body 70. The means 92 is rotated counterclockwise about the fulcrum. As a result, the first rocking body 70 rotates clockwise with the pivot 71 as a fulcrum, and the second rocking body 80 rotates clockwise with the urging force of the spring 75 around the connecting pin 81 as a fulcrum. Is in a state in which the engagement with the engagement pin 36 is released.

   On the other hand, since the cylindrical portion 25 of the stopper 22 is pressed against the urging force of the stopper spring 24 by the projection 17 of the trigger 10, the engagement receiving portion 23 of the stopper 22 is implanted in the lock rod 30. The engagement pin 36 is engaged (including an engageable state).

  In the opened state, the lock rod 30 has the guide bar 38 at the front end position of the guide hole 37 and the engaging pin 44 of the dead hub 40 and the connecting pin 63 of the first click member 60 as shown in FIG. The portion automatically locks the position of the rear end portion of the notch 31 of the lock rod 30 by the click action of the click spring 64 of the first click member 60 to maintain the retracted posture of the lock rod 30. Therefore, as shown in FIG. 1, even when the dead hub 40 is rotated in the locking direction by an operating member such as a cylinder or thumb turn with the trigger 10 protruding, the engaging pin 36 of the lock rod 30 is engaged with the stopper 22. Since it is engaged with the receiving portion 23, the lock rod 30 cannot be protruded. Therefore, in order to make the lock rod 30 project in the unlocked state to the locked state, it is necessary to retract the trigger 10 as described later.

  In this open state, the base end surface 34a of the sickle piece 34 is pushed backward by the dead bolt 33 while being pushed by the lower end surface 51 of the sickle piece regulating member 50, and the sickle piece 34 is turned against the pivot 35 as a fulcrum. It is housed in the recess 32 of the dead bolt 33 while being rotated clockwise.

The case where the door is closed, that is, when the door is locked from the opened state as shown in FIG. 4 will be described below.
First, when the sliding door i is closed, as shown in FIG. 2, the trigger 10 comes into contact with the receiving 100 such as a frame and a column rod and moves backward against the urging force of the trigger spring 11 as shown in FIG. To do. At this time, the trigger pins 14 and 14 slightly retract the guide grooves 1d and 1d of the lock case 1, and the trigger pin 16 is at a point b of the guide hole 73 of the first rocking body 70. The second pivot member 80 rotates in the locking direction (counterclockwise) with the pivot 71 as a fulcrum against the urging force of the second click member 90, and the second oscillator 80 moves in the locking direction (counterclockwise) with the connecting pin 81 as a fulcrum. The engaging portion 83 is engaged with the engaging pin 36 of the lock rod 30 by rotating. At this time, the protrusion 17 of the trigger 10 is retracted from the position of FIG. 1 to the position of FIG. 2, and the engagement receiving portion 23 of the stopper 22 is disengaged from the engagement pin 36. There is nothing that prevents 30 from protruding.

   Therefore, when the sliding door A is further closed to the position shown in FIG. 3, the trigger 10 is further retracted, and the trigger pins 14 and 14 are retracted to the rear positions of the guide grooves 1d and 1d of the lock case 1 and the trigger pin 16 Is located at a point c of the guide hole 73 of the first rocking body 70, the pivot 71, the pin 72, and the fixing means 92 are on a substantially vertical line, and the first rocking body 70 and the second click member 90 are substantially vertical. Become. During this time, the engaging portion 83 of the second rocking body 80 pushes the engaging pin 36 of the lock rod 30 in the lock protrusion direction, so that the dead bolt 33 of the lock rod 30 engages with the receiving hole 102 of the receiver 100. . In this case, the engaging portion 44 of the dead hub 40 is rotated clockwise while resisting the urging force of the click spring 64 of the first click member 60 and is in a substantially neutral position of the notch 31 of the lock rod 30 ( (See FIG. 3). At this time, the sickle piece 34 remains accommodated in the recess 32 of the dead bolt 33.

When the trigger 10 is retracted by the receiver 100 from the state of FIG. 3 to the state of FIG. 4 in a completely closed state, the lock rod 30 is completely projected as shown in FIG.
That is, in the state shown in FIG. 4, the trigger pins 14, 14 are retracted to the rearmost position of the guide grooves 1 d, 1 d of the lock case 1, and the trigger pin 16 is in the position d of the guide hole 73 of the first rocking body 70. The second click member 90 is rotated clockwise from the state shown in FIG. 3 by the click spring 93, and the first rocking body 70 is rotated counterclockwise around the pivot 71 as the second rocking body. 80 is also rotated counterclockwise about the connecting pin 81 as a fulcrum. At this time, the engaging portion 83 of the second rocking body 80 is disengaged from the engaging pin 36 through the action of the second click member 90 and the first rocking body 70.

In this case, the lock rod 30 protrudes to the maximum allowable length, the base end surface 34a of the sickle piece 34 abuts on the front position of the lower end surface 51 of the sickle piece regulating member 50, and receives the locking portion 34b of the sickle piece 34. It locks on 100 (wall surface of the receiving hole 102 of the receiving member 101), and it is set as this locking state.
At this time, the engaging portion 44 of the dead hub 40 is engaged from the neutral position of FIG. 3 to the front position of the notch 31 as shown in FIG. It is automatically locked so as to prevent the retreating (see FIG. 4).

    The process from the closed door locked state shown in FIG. 4 to the open door unlocked state shown in FIG. 1 will be described below with reference to FIGS. 4 and 10 to 13.

   In FIG. 4 showing the closed door locking state, the engaging portion 83 of the second rocking body 80 and the engaging pin 36 of the lock rod 30 engaged from the start of closing to the middle of closing are immediately before the closing of the door. , The second rocking member 90 and the first rocking body 70 operate in conjunction with the retraction of the trigger 10, so that the engaging portion 83 of the second rocking body gets over the engaging pin 36 and engages with the engaging portion 83. The engagement with the pin 36 is released, and the lock rod 30 is in a state where it can be retracted to the allowable retracted position (see FIG. 4).

  Therefore, as shown in FIG. 10, while the dead hub 40 is rotated in the unlocking direction by the action of the first click member 60 by an operation member (not shown) such as a cylinder or a thumb turn, the lock rod 30 is retracted. The engaging portion 44 of the dead hub 40 is engaged with the rear position of the notch 31 of the lock rod 30 by the operation of the first click member 60, and the lock rod is retracted. When the dead hub is rotated in the unlocking direction until the lock rod 30 reaches the allowable retracted position, the sickle piece 34 is engaged with the base end surface 34a in sliding contact with the lower end surface 51 of the sickle piece regulating member 50 in the retracting direction. The stopper 34b is released from the engaging portion 103 of the receiving hole 102, and the sickle piece 34 is rotated counterclockwise about the pivot 35 as a fulcrum and is received in the recess 32 of the lock rod 30 (see FIG. 11). . As a result, unlocking is completely completed and the door can be opened.

   In the unlocked state (FIG. 11), as shown in FIG. 12, when the sliding door is opened, the trigger 10 protrudes by the trigger spring 11, and the first trigger is interlocked with the protrusion of the trigger 10 by the trigger spring 11. The rocking body 70 and the second rocking body 80 rotate, and the engagement receiving portion 23 of the stopper 22 is engaged with the engagement pin 36 provided on the lock rod 30 so that the door can be opened (FIG. 13). reference).

   That is, in FIG. 12, the trigger pin 16 pushes the point e of the guide hole 73 of the first rocking body 70 in the projecting direction in conjunction with the protrusion of the trigger 10, so that the first rocking body 70 uses the pivot 71 as a fulcrum. It rotates in the direction (see FIG. 13). In conjunction with the rotation of the first oscillating body 70, the second oscillating body 80 rotates clockwise with the connection pin as a fulcrum, while the engaging portion 83 of the second oscillating body 80 causes the engaging pin 36 to move. It will not get over and be engaged. On the other hand, the protrusion 17 of the trigger 10 presses the cylindrical portion 25 of the stopper 22, whereby the engagement receiving portion 23 of the stopper 22 is engaged with the engagement pin 36 of the lock rod 30 (see FIG. 13). When the sliding door is completely opened, the engagement between the engagement receiving portion 23 of the stopper 22 and the engagement pin 36, the first rocking body 70, the second rocking body 80, the second click member 90, etc. 1 reset state.

In the present invention, the shape and position of the transmission mechanism 20 are not limited to those shown in the drawings, and can be appropriately changed in design.
Further, although the lock rod 30 has a double structure of the dead bolt 33 and the sickle piece 34, the concave portion 32 of the dead bolt 33 can be omitted and the omitted equivalent part can be constituted by only the sickle piece 34. Other design changes can be made as appropriate.

   Further, in this embodiment, the first click member 60 is configured such that one end is pivotally supported by the lock case 1 and the other end is connected to the engaging portion 44 of the dead hub 40. The member 60 is not limited to the above configuration, and can be appropriately changed in design. For example, as is known, one end of a leaf spring is fixed laterally in the vicinity of the notch 31 of the lock rod 30 and the leaf spring is provided so as to face the notch 31 of the lock rod 30. Then, the engaging portion 44 of the dead hub 40 is rotated against the urging force of the leaf spring, so that the protruding (locked) state or the retracted (unlocked) state of the lock rod 30 is stably held. It may be a thing. Thus, the 1st click member 60 does not need to be the structure pivotally supported by the lock case 1, or connected with the dead hub 40, and can be designed suitably.

The sliding door lock of the present invention can be adopted not only for a single sliding door but also for a sliding door.

It is a longitudinal cross-sectional view at the time of door opening of one Example of this invention. It is a longitudinal cross-sectional view at the time of a door start. It is a longitudinal cross-sectional view in the middle of closing. It is a longitudinal cross-sectional view at the time of completion at the time of closing. It is a schematic perspective view of a trigger. It is a schematic perspective view of a 1st rocking body. It is a schematic perspective view of a 2nd rocking body. It is a schematic perspective view of a stopper. It is a schematic perspective view of a sickle piece control member. It is a longitudinal cross-sectional view at the time of unlocking | release start from a closed door locking state. It is a longitudinal cross-sectional view of the state which unlocked from the state of FIG. It is a longitudinal cross-sectional view at the time of a door start from the state of FIG. It is a longitudinal cross-sectional view just before completion of opening.

DESCRIPTION OF SYMBOLS 1 Lock case 3 Front board 5 Trigger entrance 6 Lock entrance 10 Trigger 11 Trigger spring 14 Trigger pin 16 Trigger pin 17 Protrusion 20 Transmission mechanism
22 Stopper 23 Engagement receiving portion 24 Stopper spring 30 Lock
31 Notch
32 recess
33 Dead Bolt
34 sickle
36 engaging pin
40 Dead Hub
44 engaging part
50 sickle piece regulating member
60 First click member
63 Connecting pin 64 Click spring
70 First oscillator
71 Axis 73 Guide hole 80 Second oscillator
81 connecting pin 83 engaging portion 90 second click member
93 Click spring 100
102 receiving hole

Claims (1)

When the door is closed, it is retracted by abutting against the receiving of a frame, a pillar, etc., and is normally urged in the protruding direction, and via a transmission mechanism, the lock is protruded by the retraction of the trigger and retracted by the protrusion of the trigger.杆, a dead hub that engages with a notch formed at the rear of the lock 杆 and is operated by an operating member such as a cylinder or thumb turn, and a first click that stably holds the dead hub in a locked state and an unlocked state When the door is closed, when the trigger comes into contact with the frame or column holder and retracts to the allowable position, the lock rod protrudes through the transmission mechanism and is provided on the frame or column holder. together to engage the hole, and the and the Deddohabu the first click member a Oh Ru sliding door lock so as to prevent retraction of Jo杆,
The transmission mechanism includes a first rocking body having a part connected to the trigger and the other part pivotally supported by a lock case by a pivot, a second rocking body and a second click member connected to the first rocking body by a connecting pin. And an engagement pin provided on the lock rod, one end pivotally supported by the lock case, and the other end having an engagement receiving portion engaged with the engagement pin. A stopper biased by a stopper spring in a direction to release the engagement with the pin,
When the door is opened, the trigger protrudes and the lock rod retreats, and the engagement receiving portion of the stopper is provided to engage with the engagement pin of the lock rod. It is configured so that the dead hub cannot be operated in the locking direction by the operation member of
When the door is closed, the trigger is brought into contact with the receiving of the frame, the pillar, or the like and retracted, whereby the engaging receiving portion of the stopper is released from the engaging pin provided on the lock rod, and the first rocking body Is pivoted in the locking direction with the pivot as a fulcrum, and the second oscillating body is pivoted in the locking direction with the connecting pin as a fulcrum, and the engaging portion of the second oscillating body is engaged with the engaging pin provided in the lock rod. combined with Jo杆Ki to have protruded in the locking direction, in a state where the lock rod is fully extended engagement portions of the second rocking body and the engagement pin by the operation of the second click member and the first rocking body While the engagement is released, the engaging portion of the dead hub is automatically locked so as to be engaged with the front position of the notch portion of the lock rod by the operation of the first click member to prevent the lock rod from moving backward. As a configuration,
In order to change from the locked state to the unlocked state, the engaging portion of the dead hub is moved to the first click member while retreating the lock lever by rotating the dead hub in the unlocking direction by an operating member such as a cylinder or thumb turn. When engaged, it is engaged with the rear position of the notch of the lock rod so that the lock rod can be retracted to open the door, and the trigger protrudes by the trigger spring, and the first is interlocked with the protrusion of the trigger by the trigger spring. A sliding door lock characterized in that the swinging body and the second swinging body rotate, and the engagement receiving portion of the stopper is engaged with an engagement pin provided on the lock rod so that the door can be opened.

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