JP6632120B2 - Sliding lock - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a sliding door lock excellent in locking stability, which is installed between a side surface on the leading end side of a sliding door and a surface facing an entrance forming frame opened and closed by the sliding door.

  A conventional lock for a sliding door is generally installed between a front end surface of the sliding door and a surface facing an entrance forming frame which is opened and closed by the sliding door. In this case, a lock called a sickle is used because the gap between the leading end surface of the sliding door and the frame for forming the doorway is small (for example, JP-A-2002-15437 and JP-A-2002-201840). ). Sickle tablets can be broadly divided into two types: a downturned sickle tablet that comes out with a downward sickle when locked, and an upsided sickle tablet that comes out with an upward sickle when locked. In each of the sickles, the gap between the lock and the lock is small for the above-described reason, so that the length protruding from the lock body is small.

  2. Description of the Related Art In recent years, sliding doors have been developed in which a doorway-forming frame body and a side surface on the leading end side of a sliding door face each other during locking due to reasons such as the convenience of a building structure. In this case, since the leading end of the sliding door does not directly contact the doorway forming frame, the sliding door is stopped by the stop portion on the sliding door side. Such sliding doors are gaining in popularity because no door pocket is required and the wall thickness can be made large.

  Japanese Patent Application Laid-Open No. 2005-163294 discloses a method of using an outset sliding door that is retrofitted along a wall surface outside of an existing door opening in a room along a wall surface, and locks and locks the sliding door when the sliding door is closed. The sliding door lock device includes a sliding door lock in which a lock case main body is buried and attached to a vicinity of an opening of the sliding door, and when the sliding door is in a closed position, an opening edge or a door of the door opening facing the sliding door lock. A lock receiving recess is formed on the body side, and the sliding door lock has a thumb turn assembled to the lock case main body so as to be reciprocally rotatable between a locking position and an unlocking position about a thumb turn axis, and a screw hole at a rotation center. The screw hole is rotatably held in the lock case body with the center axis of the screw hole being parallel to the thumb turn axis, and rotation is transmitted through the thumb turn and rotation transmission means. A lock member, which is provided with a screw portion on the outer periphery thereof, which is screwed with the screw hole of the rotary member, and which supports the distal end portion of the lock case body so as to be able to protrude and retract, A rotation stopper for stopping and always restricting the shaft rotation of the lock rod. When the thumb turn is rotated to a locking position or an unlock position to rotate the rotating body, the lock rod in the rotation restricted state is rotated. A sliding door lock device (Claim 1) is disclosed which is protruded and retracted in a direction orthogonal to the sliding door opening / closing direction in accordance with the rotational force of the body and is engaged and disengaged from the lock receiving recess.

JP-A-2002-115437 JP-A-2002-201840 JP 2014-20092 A

  However, in a sliding door in which the side surface on the front end side of the door frame and the sliding door are opposed to each other, when closing the sliding door, a gap between the sliding door and the door forming frame is inevitably large in order to avoid contact between the sliding door and the sliding door. . For this reason, in the conventional sickle lock, the sickle lock main body and the locking metal may not be locked, and there is a problem that the locking stability is lacking. In the sliding door lock device disclosed in Japanese Patent Application Laid-Open No. 2005-163294, the amount of protrusion of the lock bar from the sliding door is equal to or less than the thickness of the sliding door, and is actually about 2/3 of the thickness of the sliding door. It was not enough in terms of proper locking.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sliding door lock excellent in locking stability in a sliding door in which an entrance forming frame body and a side surface on a tip end side of the sliding door face each other.

  Under such circumstances, the present inventors have conducted intensive studies and as a result, provided an insertion hole in the entrance forming frame, and provided the sliding door with a side from the side of the lock body attached to the front end of the sliding door to the side of the sliding door. If a locking member that protrudes and is rotatable along a direction orthogonal to the side surface of the sliding door is attached, the locking member can only be inserted into the insertion hole, the sliding door cannot move in the opening direction, and strong locking can be performed, The present inventors have found that a locking method of hooking a sickle lock on a locking metal as in the related art is unnecessary, and have completed the present invention.

  That is, the present invention provides an insertion hole provided in an entrance forming frame that is opened and closed by a sliding door, a lock body that extends inward from a front end of the sliding door, and a side surface of the lock body. A locking member protruding from the side of the sliding door and rotatable along a direction orthogonal to the side surface of the sliding door, and an operating member interlocked with the locking member attached to the side surface of the sliding door. The operation of rotating the operation member causes the locking member to rotate along a direction orthogonal to the side surface of the sliding door, and the distal end of the locking member to enter the insertion hole and lock. A lock for a sliding door is provided.

  Further, according to the present invention, the lock body has an intermediate member movably attached in a linear direction in which the lock body extends, and converts the rotation of the operation member into a linear motion of the intermediate member. The lock for a sliding door is provided, comprising: a first direction changing portion; and a second direction changing portion that converts a linear motion of the intermediate member into a turning motion of the locking member.

  Further, in the present invention, the first direction changing portion includes a deformed link member that locks with the operation member, a rod-shaped link member that is connected to the deformed link member, and an intermediate member that is connected to the rod-shaped link member. The lock for a sliding door is provided.

  Further, in the present invention, the intermediate member has a pair of plate-shaped vertical members separated by a predetermined distance, and a pair of first locking projections is provided on an upper surface of a surface facing the vertical members, The lock for a sliding door is provided, wherein a pair of second locking projections are attached to an inner lower portion.

  In the invention, it is preferable that the second direction change portion includes the intermediate member and a rotatable rotary body having a hollow cylindrical wall with a helical hole connected to the intermediate member. It provides a lock.

  The present invention also provides the lock for a sliding door, wherein the pair of second locking projections are loosely fitted into the spiral holes.

  Also, in the present invention, it is preferable that the locking member has a base having a through engagement hole and a rod-shaped main body extending in one direction from the base, and the base and the rotating body are fixedly connected. The lock for a sliding door is provided.

  Further, the present invention provides the sliding door lock, wherein the rod-shaped main body is a plate-like body, and a length from the lock main body at the time of locking is 20 mm to 30 mm. is there.

  According to the present invention, the insertion hole provided in the entrance forming frame is in a direction orthogonal to the direction in which the sliding door is pulled, and the locking member provided on the side surface of the sliding door enters, so that the locking member is a stopper. , Preventing the sliding door from moving forward or backward. The locking member and the insertion hole do not have a locking relationship like a sickle lock, the locking member simply enters the insertion hole, and since the locking member protruding from the lock main body can take a large length, Excellent locking stability.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the sliding door in which the lock for sliding doors of this invention is used. It is another perspective view of the sliding door in which the lock for sliding doors of this invention is used. 1 is an exploded perspective view of a part of a lock for a sliding door according to an embodiment of the present invention. FIG. 5 is another exploded perspective view of a part of the sliding door lock according to the embodiment of the present invention. It is an exploded perspective view of a lock for a sliding door in an embodiment of the invention. 1 is an exploded perspective view of a part of a lock for a sliding door according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a one part perspective view of the lock for sliding doors in embodiment of this invention. It is a figure explaining lock before the lock for sliding doors of this example (sliding door is in an open state). FIG. 9 is a diagram illustrating a state where the operation member is turned in the locking direction by 45 degrees from the state of FIG. 8. FIG. 9 is a diagram illustrating a state in which the operation member is turned in the locking direction by 65.8 degrees from the state of FIG. 8. FIG. 9 is a diagram illustrating a state in which the operation member is turned in the locking direction by 90 degrees from the state of FIG. 8.

  Next, a sliding door lock according to an embodiment of the present invention will be described with reference to FIGS. FIG. 6 is an exploded perspective view of the sliding door lock shown in FIG. 5, viewed from the back, and a part thereof. The sliding door lock 10 is applied to a sliding door in which an entrance forming frame 11 opened and closed by the sliding door 50 and a side surface 51 on the back side of the front end side of the sliding door 50 face each other. The back side surface 51 refers to a surface on the side opposite to before the operation member 3 is installed. In other words, this is different from a conventional general sliding door in which the entrance / exit forming frame 11 and the front end surface of the sliding door 50 abut. In such a sliding door 50, a gap is easily formed between the entrance forming frame 11 and the side surface 51 of the sliding door 50.

  The lock 10 for a sliding door is provided with an insertion hole 1 attached to an entrance forming frame 11 opened and closed by a sliding door 50, a lock body 21 extending inward from a front end of the sliding door 50, and a lock body. A locking member 22 protruding from the side surface of the portion 21 to the side of the sliding door 50 and rotatable in a vertical direction (direction indicated by a symbol Y in FIG. 3) orthogonal to the side surface 51 of the sliding door 50; The operating member 3 is interlocked with the locking member 22 attached to the side surface 51 of the sliding door 50, and when the operating member 3 is rotated, the locking member 22 rotates in a direction orthogonal to the side surface 51 of the sliding door 50. Then, the distal end of the operation member 3 enters the insertion hole 1 and is locked.

  In the lock 10 for a sliding door, the insertion hole 1 has a shape that allows the locking member 22 in the standing posture or the suspended posture to rotate into the insertion hole 1 in the lock body 21. Therefore, the height of the insertion hole 1 is slightly larger than the length of the locking member 22, and the depth dimension of the insertion hole 1 is slightly larger than the maximum length of the locking member 22 protruding from the lock body 21. In this example, the insertion hole 1 has a rectangular opening shape, and is formed by a latch.

  In the lock 10 for a sliding door, the lock body 21 is provided at the tip of the sliding door 50 and at the corner on the side of the entrance forming frame 11, and includes a locking member 22, an intermediate member 23, and a first direction change. The case 91 is a case-like object that houses the portion 91 and the second direction changing portion 92, extends inward from the front end of the sliding door 50 (in the direction of the arrow X in FIG. 4), and is screwed to the sliding door 50. Is done. At the rear center of the lock body 21, fitting holes 411 and 421 in which the corner members 29 connected to the operation member 3 fit are formed penetrating in the left-right direction. The corner member 29 is fitted in the locking hole 312 of the locking projection 311 of the operation member 3.

  In the lock body 21, the locking member 22, the second spring 224, and the spring support member 223 interposed between the locking member 22 and the second spring 224 are accommodated between the pair of front and rear cover members 225 and 226. Further, the first direction changing portion 91 and the second direction changing portion 92 are accommodated between the pair of left and right cover members 411 and 421. The lock body 21 has a substantially horizontal T-shape in which the combined front and rear cover members 225, 226 are fixed to the distal ends of the combined left and right cover members 411, 421.

  The first direction changing unit 91 converts the rotation of the operation member 3 into a linear motion of the intermediate member 23. The first direction changing portion 91 is a link portion including a deformed link member 24 that locks with the operation member 3, a rod-shaped link member 25 connected to the deformed link member 24, and an intermediate member 23 connected to the rod-shaped link member 25. . That is, by turning the operating member 3 in the locking direction by hand, the intermediate member 23 makes a forward linear motion, and by turning the operating member 3 in the unlocking direction, the intermediate member 23 makes a rectilinear linear motion.

  The deformed link member 24 includes a disc portion 241 having a through hole 243 at the center, and an arm portion 242 that is bent slightly in a part of the outer periphery of the disc portion 241 in a slightly oblique direction. A through hole 244 that is rotatably connected to the rear coupling protrusion 252 of the bar-shaped link member 25 is formed at the tip of the arm 242. In the present example, the central through hole 243 is formed of a circular through hole and a pair of partial fan holes formed outside the through hole and having a partial fan shape slightly larger than about 45 degrees as the center of the circular through hole. It is a modified through hole. The reason why the deformed link member 24 is formed in such a shape is to engage with the retreat regulating projection 43 and secure a 45-degree rotation space in a limited space. Further, the small side projection 274 of the rotation range adjustment member 27 that is interlocked with the rotation of the operation member 3 is locked in the partial through hole of the modified through hole 243. As a result, the play range can be set for the operation member 3 without rotating the deformed link member 24 in the range in which the side small projection 274 rotates in the partial through hole. The play of the operation member 3 means that even if the operation member 3 is rotated, the deformed link member 24 does not interlock and the locking operation does not start. Even if the operation member 3 is erroneously operated in a state where the sliding door 50 is not completely closed due to the play of the operation member 3, the locking member 22 does not fly out of the sliding door 50 and damages the entrance forming frame 11. There is no.

  The rotation range adjusting member 27 fits into the through hole 243 of the deformed link member 24. The rotation range adjusting member 27 transmits the rotational force of the operation member 3 to the deformed link member 24 and transmits the spring force of the first spring member 28 to the deformed link member 24, and has a through hole 273 in the center. A plate portion 271, a protruding portion 272 protruding outward from a part of the outer edge of the disk portion 271, a small protrusion 275 protruding to the case side at the protruding portion 272, and a counter-case side (inside) around the through hole 273. It is composed of a protruding side projection 276. The side projection 276 has a small side projection 274 that fits into a partial through hole of the odd-shaped link member 24 on a part of the outer peripheral surface of the cylindrical projection. One end of the first spring member 28 is fixed to the small protrusion 275. The side projection 276 and the small side projection 274 are fitted into the through holes 243 of the odd-shaped link member 24. The small side projection 274 fits into a partial through hole of the through hole 243. In this example, the play range in which the small side protrusion 274 rotates from one end to the other end of the partial through hole is 45 degrees. A connecting rod 29 having a rectangular cross section fits into the through hole 273 of the rotation range adjusting member 27, and the connecting rod 29 fits into a projection hole 312 of the operation member 3. The first spring member 28 is a torsion spring, one end of which is fixed to the case side and the other end of which is fixed to the small protrusion 275 of the rotation range adjustment member 27. The through hole is in an unlocked state (a state before locking).

  The rod-shaped link member 25 has a rear end connecting projection 252 protruding left and right at the rear end of the rod member, and an engaging hole 251 extending laterally at the front end of the rod member. The engagement hole 251 is engaged with the through hole 244 of the deformed link member 24, and is coupled to the upper position of the intermediate member 23 via the pin 61.

  The intermediate member 23 is attached inside the left and right cover members 41 and 42 and on the bed-shaped support base 61 so as to be movable in the linear direction (the front-rear direction) in which the lock body 2 extends. A pair of plate-like vertical members 231 and 231 spaced apart from each other and a bottom member connecting the vertical members 231 and 231 at the lower end are formed in a substantially U shape, and are bent from the upper ends of the vertical members 231 and 231. Upper flanges 234 and 234 extending laterally, lower flanges 235 and 235 bent from the lower ends of the vertical members 231 and 231 and a pair of first flanges provided on the upper part inside the vertical members 231 and 231. It has locking holes 232, 232 and a pair of second locking holes 233, 233 attached to the lower part inside the vertical member. The upper flanges 234, 234 and the lower flanges 235, 235 are fitted in rail grooves 412 formed in the left and right cover members 41, 42, and are guided in a linear motion. The pin 61 is passed through the engaging hole 251 at the front end of the rod-shaped link member 25, and both ends are fitted into the pair of first locking holes 232, 232. The pin 61 and the engagement hole 251 are a rotatable connection. Thereby, the intermediate member 23 can linearly move with respect to the inclined movement of the rod-shaped link member 25.

  The second direction changing portion 92 converts a linear motion of the intermediate member 23 into a rotational motion of the locking member 22, and is a rotatable member rotatably installed in the intermediate member 23 and the left and right cover members 41 and 42. 26 and a locking member 22 connected to the rotating body 26. The rotating body 26 is a hollow cylindrical body having an opening at the rear end, and is provided with a projection 263 fitted to the locking member 22 at the front end. Further, a pair of spiral holes 261 are formed in the cylindrical wall 262 of the rotating body 26. That is, the pin 71 is passed across the pair of spiral holes 261, and both ends are fitted in the pair of second locking holes 233, 233 located below the intermediate member 23. The pin 71 and the spiral hole 261 are rotatably fitted. As a result, the pin 71 moves forward in the spiral hole 261 by the forward movement of the intermediate member 23, so that the rotating body 26 rotates in one direction around a rotation shaft extending in the front-rear direction. In addition, since the pin 71 moves backward in the spiral hole 261 by the backward movement of the intermediate member 23, the rotating body 26 rotates in the other direction (reverse rotation) about the rotation axis extending in the front-back direction. The opening at the rear end of the rotating body 26 is engaged with the horizontal projection 611 of the bed-shaped support base 61. The horizontal projection 611 is formed inside a back member that stands up from one end of the bed-shaped support base body. Therefore, the rotating body 26 can stably rotate around the rotation axis.

  The locking member 22 has a base 221 having a through engagement hole 223 and a rod-shaped main body 222 extending in one direction from the base 221. The projection 263 is fitted and integrated. Thereby, the rotating body 26 and the locking member 22 rotate synchronously. In addition, the rod-shaped main body 222 is a plate-shaped body in this example, and the length of the rod-shaped main body 222 protruding from the lock main body 21 at the time of locking is 20 mm to 30 mm. Thereby, locking can be performed even if a gap is formed between the sliding door 50 and the frame 11 for forming an entrance. A locking projection 227 extending obliquely downward is formed below the base 221 of the locking member 22. The locking member 22 is installed between the front and rear cover members 225 and 226 by a second spring member 224 and a spring supporting member 223 which are torsion springs. One end of the second spring member 224 is fixed to the locking projection 227 via a spring support member 223. The second spring member 224, one end of which is fixed to the spring support member 223 and the other end of which is fixed to the cover member 225, attaches the locking member 222 to the anti-protruding side between the pair of front and rear cover members 225, 226 in the unlocked state. The second spring member 224 is moved to a standing position, which is a neutral position, by the rotation of the operation member 3 and the rotating body 26, and the locking member is further rotated by the rotation of the operation member 3 and the rotating body 26. 22 is a position for urging the protruding side 22 out. Thus, the locking member 22 in the locked state is stable at the locked position.

  The operation member 3 installed on one side surface of the sliding door 50 has the operation main body 32 and a locking projection 311 extending from the upper portion to the sliding door side on the back side of the operation main body 32. The locking projection 311 passes through the center of the seat 31, and a locking hole 312 having a square cross section is formed at the center of the locking projection 311. One end of the connecting rod 29 fits into the locking hole 312.

  The sliding door side member 44 installed on one side surface of the sliding door 50 supports an initial stationary position of the first direction changing unit 91. That is, the projection 43 protruding from the seat portion 45 toward the sliding door side passes through the through hole of the sliding door 50, enters the locking main body portion 42, is located behind the bent arm portion 242 of the odd-shaped link member 24, and The rearward rotation of the part 242 is stopped.

  Next, the locking and unlocking actions of the sliding door lock 10 will be described with reference to FIGS. 8A to 11, (a) is a cross-sectional view of the front and rear case members viewed from the front end surface of the sliding door, and mainly shows the movement of the locking member 22, and (b) is a front and rear case member. FIG. 3 is an end view in a state where the lock body is removed, and mainly shows the movement of a rotating body. FIG. 4C is a cross-sectional view of the lock body 2, mainly showing a first direction change portion 91 and a second direction change. 9 shows the movement of the unit 92. In (c), the rotation direction of the deformed link member 24 is opposite to the rotation direction of the operation member 3 installed on the sliding door. That is, when the operation member 3 is rotated right as viewed from the operator, the deformed link member 24 is rotated left (counterclockwise) in FIG.

  FIG. 8 is a diagram of the sliding door lock 10 in an unlocked state. In this state, the sliding door 50 can be opened and closed freely. In this state, the intermediate member 23 is stopped by the projection 43 in the left and right cover members 41 and 42 and is located at the rear end, and the locking member 22 is in the front and rear cover members 225 and 226, and has an upright posture. The small side projection 274 of the rotation range adjusting member 27 is located at the end (rear end) of the partial through-hole of the odd-shaped link member 24. That is, in the present example, the clockwise rotation of the operation member 3 is in the locking direction, but the state in FIG. 8 is at a stop position (start position) before the operation member 3 is locked and rotated.

  Next, the sliding door 50 is closed and the locking operation is started. Then, in order to change the unlocked state of the sliding door lock 10 to the locked state, the operating member 3 is rotated clockwise by 45 degrees against the spring force of the first spring member 28 (FIG. 9). At this time, when the operation member 3 is rotated by 0 to 45 degrees, the small side protrusion 274 of the rotation range adjusting member 27 moves to the other end (front end) in the circumferential direction of the modified through-hole of the modified link member 24. Only the first direction changing portion 91 and the second direction changing portion 92 including the deformed link member 24 are not operated. The operation member 3 is provided with a 45-degree play rotation because the locking member 22 does not fly out of the sliding door 50 even if the operating member 3 is erroneously operated in a state where the sliding door 50 is not completely closed. There is no damage to the frame 11.

  Next, the operation member 3 is further rotated (clockwise) in the locking direction against the spring force. At this time, since the small side projection 274 of the rotation range adjusting member 27 interlocking with the operation member 3 rotates the deformed link member 24, the deformed link member 24 is locked in the locking direction (counterclockwise direction in FIG. 10). Rotate. The rotational force is interlocked with the rod-shaped link member 25 and moves the intermediate member 23 forward. Then, as the intermediate member 23 moves forward, the pin 61 moves forward while passing through the inside of the spiral hole 261 of the rotating body 26. Since the rotating body 26 cannot move forward and backward, it rotates on the spot. The rotation of the rotating body 26 is transmitted to the locking member 22 to rotate the locking member 22. The locking member 22 projects obliquely from the side surface of the lock body 21 toward the side surface of the sliding door 50 against the spring force about the rotation axis of the rotating body 2 as a rotation center (FIG. 10). In the present example, the spring force of the second spring member 224 only acts in the vertical direction when the locking member 22 is at the rotation position of 65.8 degrees from the initial stage.

  Next, the operation member 3 is further rotated in the lock direction (clockwise rotation). At this time, since the spring force of the first spring 28 acts in the locking direction, the operation member 3 automatically rotates from FIG. 10 to FIG. Then, the deformed link member 24 rotates in the locking direction (counterclockwise in FIG. 11) in conjunction with the operation member 3. The rotational force is interlocked with the rod-shaped link member 25 to move the intermediate member 23 further forward. Then, as the intermediate member 23 moves forward, the pin 61 further moves forward while passing through the inside of the spiral hole 261 of the rotating body 26. Since the rotating body 26 cannot move forward and backward, it rotates on the spot. The rotation of the rotating body 26 is transmitted to the locking member 22 to rotate the locking member 22. The locking member 22 rotates around the rotation axis of the rotating body 2 as a rotation center. 10 to 11, since the spring force of the second spring member 224 acts on the locking member 22 in the locking direction, the locking member 22 is automatically rotated to extend from the lock body 21 in the horizontal direction. Stop in the posture (FIG. 11). Then, the distal end of the locking member 22 enters the insertion hole 1 of the locking fitting. The opening / closing direction of the sliding door 50 is orthogonal to the locking member 22 in FIG. 11A (from the near side to the depth direction of the drawing). Even when the sliding door 50 is pulled, the locking member 22 functions as a stopper, and is opened. Can not.

  Next, the operation of changing from the locked state to the unlocked state is the reverse of the operation of changing the unlocked state to the locked state. That is, the unlocking operation may be performed in the order of FIGS. 11 to 8, although the operations of the deformed link member 24 and the like are different. Specifically, in the state of FIG. 11, the operation member 3 is rotated in the unlocking direction (counterclockwise rotation) against the spring force. At this time, when the operation member 3 rotates by 0 to 45 degrees, the small side protrusion 274 of the rotation range adjusting member 27 moves to the opposite end (rear end) of the odd-shaped through-hole of the odd-shaped link member 24 in the circumferential direction. Only the first direction changing unit and the second direction changing unit including the deformed link member 24 are not operated.

  Next, the operation member 3 is further rotated (left-rotated) in the unlock direction. At this time, since the small side projection 274 of the rotation range adjusting member 27 interlocking with the operation member 3 is locked by rotating with the deformed link member 24, the deformed link member 24 is rotated clockwise in FIG. Rotate in the direction (unlock direction). The rotational force is interlocked with the rod-shaped link member 25 and moves the intermediate member 23 backward. Then, with the retreat movement of the intermediate member 23, the pin 61 retreats while passing through the inside of the spiral hole 261 of the rotating body 26. Since the rotating body 26 cannot move forward and backward, it rotates in the opposite direction to the locking direction on the spot. The rotation of the rotating body 26 is transmitted to the locking member 22 and rotates the locking member 22 in the closing direction. The locking member 22 rotates around the rotation axis of the rotating body 2 in the direction of coming out of the insertion hole 1.

  Next, the operation member 3 is further rotated in the unlock direction (left rotation). At this time, since the spring force acts in the unlock direction, the operation member 3 automatically rotates. Then, the deformed link member 24 rotates in the unlock direction in conjunction with the operation member 3. The rotational force is interlocked with the rod-shaped link member 25 and moves the intermediate member 23 further rearward. Then, as the intermediate member 23 retreats, the pin 61 further retreats while passing through the spiral hole 261 of the rotating body 26. Since the rotating body 26 cannot move forward and backward, it rotates on the spot in the opposite direction to that at the time of locking. This returns to the unlocked state shown in FIG. 8, and the sliding door 50 becomes movable.

  The present invention is not limited to the above embodiment, but can take various modifications. The rod-shaped main body 222 of the locking member 22 is not limited to a plate-shaped member, and may be a round bar member, an elliptical cross-section member, a square cross-section member, or the like. Further, the spring support member 223 can be omitted. In this case, one end of the second spring member 224 is directly fixed to the locking projection 227.

  According to the present invention, at the time of locking, in the sliding door where the side surface on the front end side of the doorway forming frame and the sliding door is opposed, even if there is a gap between the doorway forming frame and the side surface of the sliding door, the locking is reliably performed. Because it is performed, it is excellent in locking stability.

DESCRIPTION OF SYMBOLS 1 Insertion hole 2 Lock body 3 Operation member 10 Sliding lock 11 Door frame 21 Lock body 22 Locking member 23 Intermediate member 24 Deformed link member 25 Bar-shaped link member 26 Rotating body 27 Rotation range adjusting member 50 Sliding door 91 First direction change unit 92 Second direction change unit

Claims (8)

An insertion hole attached to an entrance forming frame that is opened and closed by a sliding door,
A lock body that extends inward from the front end of the sliding door,
A locking member protruding from the side surface of the lock body to the side of the sliding door, and being rotatable along a direction orthogonal to the side surface of the sliding door , a base, and extending in one direction from the base; A locking member having a rod-shaped main body that is not a sickle lock ,
An operating member interlocked with the locking member attached to a side surface of the sliding door,
A sliding door, wherein the rotation of the operating member causes the locking member to rotate along a direction orthogonal to a side surface of the sliding door, and a leading end of the locking member enters the insertion hole and locks. Lock.   An intermediate member attached to the lock main body so as to be movable in a linear direction in which the lock main body extends, and a first direction changer for converting rotation of the operation member into linear motion of the intermediate member. 2. The lock for a sliding door according to claim 1, further comprising a second direction changing portion that converts a linear motion of the intermediate member into a rotation motion of the locking member. First turning unit according to claim wherein the rod-like link member for connecting the profiled link member and said heterologous shaped link member operating member and the locking, in that it comprises an intermediate member for connecting the rod-shaped link member 2 The lock for sliding door as described. The intermediate member has a pair of plate-shaped vertical members separated by a predetermined distance, and a pair of upper flanges is provided at an upper portion of a surface facing the vertical members, and a pair of lower flanges is provided at a lower portion inside the vertical members. The lock for a sliding door according to claim 2 or 3 , wherein a lock is provided. Second turning part includes a intermediate member, one of the claims 2-4, characterized in that it comprises a rotatable rotary member having a cylindrical wall helical hole is hollowed connecting the intermediate member 1 The lock for a sliding door as described in the item . The intermediate member, sliding doors for locks according to claim 5, characterized in that the perforated pins to be fitted rotatably to the guide slots. Sliding door for lock according to claim 5 or claim 6 said base and said rotating member is characterized by being fixed bound.   The lock for a sliding door according to claim 7, wherein the rod-shaped main body is a plate-like body, and a length from the lock main body at the time of locking is 20 mm to 30 mm.

Images