JP5081183B2 - Sliding door sickle - Google Patents

Description

  The present invention slides the slider to rotate the sickle, and locks and unlocks the sliding door by engaging and disengaging the tip sickle portion with the sickle receiving hole on the door frame side facing the door end side mouth of the sliding door. Related to sickle locks for sliding doors.

  Conventionally, in the sickle lock for sliding doors, the external operation tool for rotating the sickle is a thumb turn, the sickle is turned by the turning operation of the thumb turn, and the sliding door is locked and unlocked by inserting and removing the tip sickle from the sickle doorway. There is what is called a thumb-turn sickle. However, with thumb-turn sickle tablets, it is difficult for the handicapped and elderly people to pick and turn the thumb-turn knob with their fingertips. For example, the following slide-type sickle locks are available in which the slider is slid to rotate the sickle, and the tip sickle part is inserted into and removed from the entrance of the sickle to lock and unlock the sliding door.

  As shown in FIG. 13, the conventional sliding sickle lock is provided with a vertically long sliding groove 2 on the opposite side plate 1a of the vertically long lock case 1 in the vertical direction in the drawing, which is provided in the vertical saddle portion of the sliding door. Furthermore, the sickle 4 having a U-shaped engaging portion 4a at the base end portion is rotated between the opposing side plates 1a, and the locking posture is such that the distal sickle portion 4b protrudes from the retracting groove 1b. The sliding member 5 having a shaft insertion hole 5a at the upper end and pivotally supporting the engaging shaft 5b at the lower end is supported by the upper and lower sides of the lock case 1 in the figure. The sliding shaft 6 is inserted into the shaft insertion hole 5a and the sliding groove 2 at the upper end, and the lower engaging shaft 5b is engaged with the engaging portion 4a of the sickle 4, The sliding member 5 is connected to the sickle 4, and the sickle 4 is normally urged by the spring member 7 to the unlocked posture, and when locking, the sliding door is applied to the vertical frame material of the door frame and the door end side is closed. When stopping, when a hand is put on an external operation unit (not shown) to push down the sliding shaft 6 and the sliding member 5 is lowered, the sickle 4 rotates around the rotating shaft 3 and the tip sickle portion 4b appears and disappears. It has a structure that protrudes from the groove 1b and is hooked in a sickle receiving hole on the opposite vertical frame member side (see Patent Document 1).

JP 2006-104694 A JP 2006-9297 A

  However, the conventional sliding sickle lock is difficult for people with disabilities and elderly people who often use hospitals and various welfare facilities because the locking / unlocking operation direction is different from the left / right opening / closing direction of the sliding door. Moreover, since the stroke required for the sliding operation is long, there is a problem that the operability is poor. In addition, when opening and closing the sliding door, before and after sliding the sliding door by placing a hand on the pulling handle, each time it is necessary to change the hand to the external operation part of the sickle lock and slide the sliding member, When opening and closing the sliding door, two operations are always required, which is troublesome. In this respect, there is a problem that operability is poor.

  Therefore, the problem to be solved by the present invention is that the direction of the locking / unlocking operation is easy to understand, the stroke of the sliding operation is shortened, and the sliding sickle can be locked / unlocked by one operation without changing the hand each time when opening / closing the sliding door. To provide a lock.

In order to solve this problem, the invention according to claim 1, for example, as shown in the embodiment shown below, allows the sickle doorway 14 to face the outside from the wooden door 75 on the door-end side of the sliding door A, and the sliding door A A lock case 10 provided in the lock case 10, a locking posture in which the distal sickle portion 20 b protrudes from the sickle inlet / outlet port 14, and an unlocking posture in which the lock case 10 is retracted into the lock case 10, and is horizontally mounted in the lock case 10. The sickle 20 is suspended by the sickle shaft 15, and the sickle 20 is provided with an eccentric hole 25 in the head 20a at a position offset from the sickle shaft 15 on the side opposite to the sickle entrance 14; The connecting projection 29 is engaged with the eccentric hole 25 to be connected to the sickle 20, while a shaft-shaped hole 33 into which a rotating shaft 55 is inserted so as to be able to transmit rotation is provided at a base end portion. Is swingable between the first position where the locking position is in the locked position and the second position where the locking position is in the unlocked position. A crank arm 30 pivotally supported in the lock case 10 by a rotary shaft 55 and installed laterally between the eccentric hole 25 of the sickle 20 and the rotary shaft 55 in a longitudinal direction; The crank arm 30 is provided with a handle S which is connected to the lock case 10 by being connected to the crank arm 30 via the rotation shaft 55, and the crank arm 30 has an installation distance L spanning between the rotation shaft 55 and the eccentric hole 25. The position of the connection protrusion 29 when the sickle 20 is rotated around the sickle shaft 15 and is in the first position, and the position of the connection protrusion 29 when in the second position are the rotation axis. The crank angle α between the half lines connected to the center point of 55 is such that the narrow angle is narrower than the angle at which the sickle 20 swings between the first position where the sickle 20 is locked and the second position where the sickle is unlocked. In addition, the side is set to be long, and the handle S is formed in the fitting groove 4 inside. 6 is recessed, while a handle 47 is provided on the outer side, and a slider 45 that is slidably guided by the guide means G, and the rotary shaft 55 is erected at the base end of the lever body 51, while the tip And a cam lever 50, which has a fitting projection 52 erected in a direction opposite to the rotation shaft 55, and is fitted to the fitting groove 46 and connected to the slider 45. The rotating shaft 55 is inserted into the shaft hole 33 of the crank arm 30 in accordance with the sliding door opening / closing direction in which the sliding direction coincides with the erection direction of the crank arm 30, and the cam lever 50 is inserted into the crank arm 30. It is characterized by being connected so as to be integrally rotatable.

  The invention according to claim 2 is the emergency unlocking of the sickle lock for sliding doors according to claim 1 from the opposite side of the pull handle S with the lock case 10 sandwiched therebetween, for example, as shown in the embodiment shown below. The lock opener 65 is operated, and the lock opener 65 includes a disk part 65a in which a key groove 69 for emergency unlocking is formed, and a cylindrical shaft part 65b protruding from the disk part 65a. The cylindrical shaft portion 65b is formed with a hole-shaped connection hole 70 that can transmit rotation in accordance with the rotation shaft 55 of the cam lever 50 in the axial direction, and the tip of the rotation shaft 55 is formed in the connection hole 70. The cam lever 50 and the crank arm 30 are connected to each other so as to be rotatable together.

  Therefore, according to the first aspect of the present invention, when the sliding door is locked and unlocked, the crank arm is locked when the hand is placed on the handle and the slider is slid laterally in the same locking and unlocking direction as the opening and closing direction of the sliding door. In the case, it swings within a narrow crank angle range with the pivot axis of the cam lever as a fulcrum, and according to the swinging direction, the sickle is pushed and turned to the locked position and the unlocked position to be unlocked. Can be pivotally displaced. Therefore, in the crank arm, the angle of the swing stroke necessary for the sickle to rotate between the locked position and the unlocked position is sufficient in a narrow angle range. Then, the sliding stroke of the slider that swings the crank arm by converting its motion with the cam lever is also shortened corresponding to the narrow swinging stroke of the crank arm. Therefore, in the sickle lock for sliding door of the present invention, the slider The operability can be improved as much as the stroke required for the sliding operation becomes shorter.

  In addition, according to the first aspect of the present invention, when the sliding door is locked and unlocked, it is only necessary to place the hand on the handle portion and slide the slider sideways in the same locking and unlocking direction as the opening and closing direction of the sliding door. Since the direction is the horizontal direction that is the same as the opening / closing direction of a customary sliding door, the direction of the locking / unlocking operation can be easily understood, and the operability can also be improved in this respect. In addition, when locking and unlocking the sliding door, it is only necessary to slide the slider laterally in the same locking and unlocking direction as the opening and closing direction of the sliding door while holding the hand of the slider on the handle. Therefore, when moving the sliding door by placing a hand on the handle, it is not necessary to carry out the locking / unlocking operation by changing the hand to the external operation part of the sickle lock. In this respect, the operability can be greatly improved.

    According to the invention described in claim 2, when the sliding door is opened by the emergency unlocking operation from the outside of the sliding door, the rotation angle of the lock opener for swinging the crank arm corresponds to the narrow swing stroke of the crank arm. Therefore, in the sickle lock for sliding door according to the present invention, the operability can be further improved as much as the stroke required for the rotation operation of the lock opener is shortened.

It is a front view which shows the sickle lock for sliding doors in the locked state. It is a front view which shows the sickle lock for sliding doors in an unlocked state. It is an assembly perspective view of the sickle lock body shown in (A) and (B) in different directions. (A) The front view which shows a sickle-lock main body in an unlocked state, (B) The front view which shows a sickle-lock main body in a locked state. It is a disassembled perspective view of a lock main body. It is a disassembled perspective view of a handle and a display. It is a disassembled perspective view of a handle. It is a disassembled perspective view of a sickle-lock main body. It is a disassembled perspective view of a display. It is a perspective view which shows the sickle-lock main body incorporated in the sliding door in different directions. It is a perspective view which shows a sickle receptacle in a door frame assembly state. (A-1) Front view showing state of puller side at the time of locking, (A-2) Front view showing state of puller side at the time of unlocking, (B-1) Line showing state of puller side at the time of locking B1-B1 cross-sectional view, (B-2) Line B2-B2 cross-sectional view showing the state of the puller side during unlocking, (C-1) Front view showing the state of the indicator during locking, (C-2) It is a front view which shows the state of the indicator at the time of unlocking It is a longitudinal cross-sectional view which shows the conventional sickle lock for sliding doors.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a sliding door sickle lock incorporated in a sliding door as an example of the present invention, FIG. 2 is a front view showing the sliding door sickle lock in an unlocked state, and FIG. It is an assembly perspective view of a main part. The sliding door sickle lock shown in the drawing includes, for example, a sickle lock main body R incorporated in a sliding door A of a wooden toilet door and a sickle holder T attached to a vertical frame member 85 of the door frame F. The sickle lock main body R is composed of a lock main body K, a handle S that is assembled on one side with the lock main body K interposed therebetween, and a display D that is assembled on the other side.

  As shown in FIGS. 4 and 5, the lock body K includes a lock case 10, a sickle 20 that is incorporated and supported in the lock case 10, a crank arm 30, a biasing spring 35, and a trigger 40. Yes.

  The lock case 10 is assembled in a thin box shape by covering a shallow case body 11 with one side open and a cover plate 12. The case main body 11 has a long mounting plate 13 bonded to one side in the horizontal direction in the figure, and a long and narrow sickle inlet / outlet 14 is provided in the vertical middle of the mounting plate 13 in the figure. Is provided with a trigger hole 18. On the bottom plate portion 11a, a sickle shaft 15 is projected on the upper side in the figure on one side in the horizontal direction, a trigger shaft 16 is projected on the lower side, and a spring hanging shaft 17 is projected on the other side in the lateral direction. In the drawing, adjacent to each other, one odd-shaped fitting hole 19 and two round hole insertion shaft holes 21 and 22 are vertically arranged. The fitting hole 19 is formed by partially cutting out the peripheral edge of the round hole portion 19a into a fan shape and providing a restriction hole portion 19b so as to have a keyhole shape as a whole. A cushion rubber 31 is fixed to the case body 11 at a corner near the sickle shaft 15. On the other hand, the cover plate 12 is provided with a shaft hole 23 into which the sickle shaft 15 of the case body 11, the trigger shaft 16, and the spring hook shaft 17 are fitted, and the same fitting hole 19 as the case body 11 side and two round incoming shafts. Holes 21 and 22 are provided.

  The sickle 20 includes a plate-like head 20a having a rotation center hole 24 and a tip sickle 20b extending in an L shape from the head 20a. In the head 20a, an eccentric hole 25 that is long in the radial direction is formed at an eccentric position that is offset from the rotation center hole 24 to the side opposite to the distal sickle portion 20b, and a pair of contact recesses are formed by partially cutting the periphery. 20c and 20d are provided. The crank arm 30 has a connecting projection 29 projecting toward the one end in the thickness direction at the tip of the arm main body 30a having a blade plate shape, and cylindrical projections 32 projecting from both sides in the thickness direction at the base end. The cylindrical protrusion 32 is adapted to the hole shape of the fitting hole 19, and protrudes radially outward from the peripheral edge of the short cylinder part 32 a and the short cylinder part 32 a that can be fitted into the round hole part 19 a to the restriction hole part 19 b. It consists of an engaging protrusion 32b that can be engaged. A shaft hole 33 having a quadrangular cross section capable of transmitting rotation is formed in the short cylindrical portion 32a in accordance with a rotation shaft 55 of a cam lever 50 described later. The trigger 40 includes an L-shaped trigger body 41 and a trigger spring 42 of a compression coil spring. The trigger body 41 has a stopper portion 41a formed at a protruding end on one end side, while a spring groove 43 is formed on the other end side along a longitudinal direction orthogonal to the one end side, and the abutting shaft 41b protrudes from the protruding end. Set up.

  Therefore, the lock body K has the sickle 20, the crank arm 30, the urging spring 35, and the trigger 40 assembled to the case main body 11, and the case main body 11 is covered with the cover plate 12, and the sickle shaft 15, the trigger shaft 16, and the spring. Assembling the thin lock case 10 by fitting the hanging shaft 17 into the shaft hole 23, the sickle 20 with the sickle shaft 15, the crank arm 30 with the rotation shaft 55, and the trigger 40 with the trigger shaft 16 as follows. The urging springs 35 are mounted on the spring hook shaft 17.

  That is, the sickle 20 is pivotally attached to the rotation center hole 24 through the sickle shaft 15, and is rotated approximately 90 degrees between a locking posture in which the distal sickle portion 20 b projects from the sickle doorway 14 and an unlocking posture in which the sickle 20 is retracted into the lock case 10. The sickle shaft 15 is suspended so that it can be displaced.

  The crank arm 30 engages the connecting protrusion 29 with the eccentric hole 25 and connects to the sickle 20, while the short cylindrical portion 32 a of the cylindrical protrusion 32 is fitted into the round hole portion 19 a of the fitting hole 19 and is engaged. The convex portion 32b is engaged with the restricting hole portion 19b, and is rotated with the head portion 20a of the sickle 20 so as to swing by a predetermined crank angle α with the pivot shaft 55 of the cam lever 50 inserted through the shaft hole 33 as a fulcrum. It is bridged between the moving shafts 55 sideways. That is, when the crank arm 30 swings in the range of the crank angle α with the rotation shaft 55 as a fulcrum, the sickle 20 is pushed around by the connecting projection 29 at the tip according to the swing direction, as shown in FIG. The sickle 20 is configured to rotate between a first position where the sickle 20 is locked and a second position where the sickle 20 is unlocked. Therefore, the crank arm 30 reduces the crank angle α necessary for the sickle 20 to rotate approximately 90 degrees between the locking position where the sickle 20 is in the locking position and the unlocking position where the sickle is in the unlocking position to a narrow, for example, approximately 20 degrees. That is, it is installed in the lock case 10 so that the angle α of the swing stroke of the crank arm 30 with the center point P of the round hole portion 19a of the fitting hole 19 as a fulcrum is sufficient.

  Therefore, in the lock body K, the shaft hole 33 through which the rotation shaft 55 penetrates in the crank arm from the connecting projection 29 at the front end in the length direction so that the crank angle α is a narrow angle (approximately 20 degrees). In the case body 11, the fitting hole 19 into which the cylindrical protrusion 19 is fitted is formed in a position spaced laterally from the sickle shaft 15, thereby penetrating the shaft hole 33. A construction distance L of the crank arm 30 that spans between the turning shaft 55 to be inserted and the eccentric hole 25 of the sickle 20 with which the connecting projection 20 is engaged is formed to be long in the lateral direction. On the other hand, the fitting hole 19 corresponds to the restriction hole 19a in which the engagement protrusion 32b of the crank arm 30 is engaged so that the crank angle α is always restricted to a narrow angle range of about 20 degrees. Drill in a fan shape with an opening angle.

  The urging spring 35 is a torsion coil spring. The coil portion is engaged with the spring hook shaft 17, one end spring portion is hooked on the rear side wall 11 b, and the other end spring portion is hooked on the crank arm 30. As shown in FIG. 4A, the sickle 20 is always urged to rotate to the second position where the unlocked posture is achieved.

  The trigger 40 has a trigger body 41 slidably mounted on the lower side wall 11 c of the case body 11 with the abutting shaft 41 b facing the trigger hole 18, and the trigger shaft 16 is engaged in the spring groove 43. The spring 42 is engaged with the hook 42a at one end of the spring 42 and incorporated in the lock case 10, and the abutment shaft 41b is normally protruded from the trigger hole 18 by the spring biasing force of the trigger spring 42, while the stopper portion 41a is protruded from the tip sickle portion 20b. And the rotation of the sickle 20 is restricted, and the distal sickle portion 20b is held in the unlocked posture retracted into the lock case 10 and is prevented from protruding from the key doorway 14. At that time, the sickle 20 is hit with the cushion rubber 31 against the contact recess 20c. Accordingly, when the sliding door A is closed, when the abutting shaft 41b of the trigger 40 abuts against the door-side vertical frame member 85 of the door frame F and slides to the restriction release position against the trigger spring 42, the tip sickle of the stopper portion 41a. The latch with respect to the part 20b is removed, and the rotation restriction of the sickle 20 is released.

  As shown in FIGS. 6 and 7, the puller S includes a slider 45, a cam lever 50, and guide means G for the slider 45. The slider 45 has a vertically long outer shape in the figure, and has a fitting groove 46 having a semicircular cross section along the length direction on the inner side, while the outer side is raised in the opposite direction. A handle 47 having a semicircular cross section is provided. Female screw holes 45a are screwed into the upper and lower ends of the fitting groove 46. The cam lever 50 has a rotating shaft 55 erected at a base end of a longitudinal plate-shaped lever main body 51 in a direction orthogonal thereto, and a fitting projection 52 is erected at the distal end in a direction opposite to the rotating shaft 55. Become. The rotation shaft 55 is formed by a rectangular angular axis, and a circular annular groove 55a is formed in the circumferential direction at the base. The guide means G includes a guide case 48 and guide pieces 49 and 49 having a screw insertion hole 49a at the center. The guide case 48 is provided with a vertically-long rectangular main body plate portion 48 a having a vertically long rectangular shape corresponding to the length of the slider 45 and having a shallow guide concave portion 59 opened on one side, and both upper and lower ends of the bottom plate portion 59 a of the guide concave portion 59. Are provided with a pair of horizontally elongated guide holes 56 and 57 and a round bearing hole 60 formed above the lower guide hole 57. In addition, incoming studs 54 and 54 are provided upright at both upper and lower ends of the main body plate portion 48a.

  Therefore, the puller S connects the cam lever 50 to the slider 45 by fitting the fitting protrusion 52 of the cam lever 50 into the fitting groove 46 of the slider 45. The cam lever 50 is rotatably supported by the guide case 48 by engaging the annular groove 55 a of the rotation shaft 55 with the bearing hole 60 via the retaining ring 44. The guide means G fits and holds the slider 45 in the guide recess 59 of the guide case 48. In the guide case 48, guide pieces 49 and 49 are slidably engaged with the guide holes 56 and 57, and the fixing screws 61 are passed through the screw insertion holes 49a of the guide pieces 49 and 49 to the female screw holes 45a and 45a of the slider 45. The guide piece 49 is fixed to the slider 45 by screwing, and the slider 45 is assembled to the guide case 48 so as to be slidable laterally and laterally within the guide recess 59 by the guide piece 49 to assemble the handle S.

  As shown in FIGS. 8 and 9, the display D includes a display main body 63, a display plate 64, a lock opener 65, and a display cover 66. The display body 63 is a vertically long rectangular plate in the figure, and is provided with a shaft through hole 67 at the center and a shallow fitting recess 63 a around the shaft through hole 67. The fitting recess 63a is formed in a circular shape through which the shaft through hole 67 penetrates in the center and a fan-shaped rotation restricting portion 68, and is recessed in a shape similar to a bowl shape as a whole. The rotation restricting portion 68 is recessed in a fan shape having an opening angle corresponding to the crank angle α of the crank arm 30, similarly to the restricting hole portion 19 a of the fitting hole 19 provided in the lock case 10. The display board 64 is formed of a U-shaped sandwiching portion 64a and a display portion 64b that becomes gradually wider toward the tip, and is formed in a substantially Y shape as a whole. The surface of the display portion 64b is colored, for example, in red indicating that it is in use (locked), for example. The lock opener 65 includes a disc portion 65a and a cylindrical shaft portion 65b protruding from the disc portion 65a. A key groove 69 for emergency unlocking is formed in the disk portion 65a. The cylindrical shaft portion 65b is provided with a connecting hole 70 made of a square hole that can transmit rotation in the axial direction in accordance with the rotation shaft 55 of the cam lever 50 on the handle S side, and a flat cut surface on the outer periphery. 65c is formed. The display cover 66 is provided with a display window 71 having a hole shape matching the shape of the display portion 64b of the display plate 64 and a round hole-shaped operation window 72 corresponding to the disc portion 65a of the lock opener 65. .

  Therefore, the display D attaches the display plate 64 to the lock opener 65 with the cut surface 65c of the cylindrical shaft portion 65b sandwiched between the clamping portions 64a, and then attaches the cylindrical shaft portion 65b of the lock opener 65 to the axis of the display main body 63. The display plate 64 is inserted into the through-hole 67, is fitted into the fitting recess 63a, is assembled to the display main body 63 so as to be rotatable integrally with the lock opener 65, and the display main body 63 is covered with the display cover 66 for assembly. The display cover 66 is put on the display body 63 after the display body 63 is assembled to the lock body K.

  When such an indicator D and a handle S are assembled to the lock body K as shown in FIG. 3, the sickle lock body R to be assembled in the sliding door is assembled as follows. As shown in FIGS. 1 and 2, the sliding door A incorporating the sickle lock main body R has a vertical hole 76 drilled in advance from the door end side wood end 75 toward the door bottom side in accordance with the outer shape of the lock main body K. On the other hand, a mounting hole is formed in the inner plate surface 77 on the front side in the figure so as to communicate with the vertical hole 76 in accordance with the outer shape of the handle S, and the outer plate surface has the outer shape of the display D. A fitting hole is also drilled. Therefore, the lock body K is inserted into the vertical hole 76 and installed in the sliding door A, and the mounting plate 13 is screwed to the wooden end 75 with the sickle doorway 14 facing outside.

  On the other hand, the puller S moves the slider 45 to the left and right sides in the drawing in which the sliding direction coincides with the installation direction of the crank arm 30 in the lock case 10, that is, the opening and closing direction of the sliding door A. As shown in FIGS. 6 to 9, the guide case 48 is fitted into the mounting hole of the surface 77, the rotating shaft 55 is inserted into the shaft hole 33 of the crank arm 30 in the lock case 10, and the cam lever 50 is inserted into the crank arm 30. Are attached to the inner plate surface 77 so as to be integrally rotatable.

  On the other hand, the display D is configured such that the display main body 63 is inserted into the insertion hole on the outer plate surface, and the tip of the rotation shaft 55 of the cam lever 50 is inserted into the connection hole 70 of the cylindrical shaft portion 65 b of the lock opener 65 in the lock case 10. Fit. At the same time, from the outer side plate surface, the incoming screw 79 is passed through the screw insertion hole of the display body 63 and screwed into the incoming stud 54, and the display body 63 and the guide case 48 are fixed to both plate surfaces of the sliding door A. The cam lever 50 connected to the slider 45 of the handle S and the lock opener 65 sandwiching the display plate 64 on the display D side are connected to the crank arm 30 in the lock case 10 so as to be rotatable together. And the display device D are assembled to the lock body K, whereby the sickle lock body R is incorporated into the sliding door A as shown in FIG.

  On the other hand, as shown in FIG. 11, the sickle receiver T has a vertically long sickle receiving recess 81, and when the sliding door is in the closed position, the sickle receiver T is at a height position facing the sickle doorway 14 of the sickle lock body R. The sickle receiving port 80 of the recessed portion 81 is directed to the front and is screwed to the door frame side vertical frame member 85 of the door frame F.

  Now, in the illustrated sickle lock, as shown in FIG. 2, when the opened sliding door A is pulled and closed, the sliding door A is slid sideways in the closing direction X by placing the hand on the handle 47 of the slider 45, 1, when the door end side wood end 75 hits the vertical frame member 85 of the door frame F and closes, in the lock body K, the abutment shaft 41b of the trigger 40 is the door end side vertical frame member of the door frame F. When it hits 85 and slides to the restriction release position against the trigger spring 42, the latching of the stopper part 41a to the tip sickle part 20b is released, and the rotation restriction of the sickle 20 is released. Therefore, when the sliding door A is locked from the inside at the time of closing, the slider 45 is set in the closing direction as shown in FIGS. Slide sideways in the same locking direction X. When the slider 45 slides in the locking direction X, the linear motion of the slider 45 is converted into a rotational motion by the cam lever 50 in which the fitting protrusion 52 is fitted in the fitting groove 46 of the slider 45, and the rotary shaft 55 is moved in the opposite direction in the figure. Turn clockwise by an angle α. Then, the crank arm 30 swings from the first position to the second position about the fulcrum P integrally with the rotation shaft 55 by the crank angle α, and pushes the sickle 20 with the connecting protrusion 29 engaged with the eccentric hole 25. Thus, the tip sickle portion 20b protrudes from the sickle doorway 14 and is hooked on the sickle receiving recess 81 of the sickle receiver T, whereby the sliding door A is locked. At that time, as shown in FIG. 1, the sickle 20 is cushioned by the cushion rubber 31 hitting the contact recess 20d.

  On the contrary, when the sliding door A locked with the illustrated sickle lock is opened, the user tries to slide the sliding door A horizontally in the opening direction Y by placing the hand on the handle 47 of the slider 45. Then, at the same time, as shown in FIGS. 12A-2 and 12B-2, the slider 45 also slides in the same unlocking direction Y as the opening direction. The linear motion of the slider 45 is converted into a rotational motion by the cam lever 50 in which the fitting protrusion 52 is fitted in the fitting groove 46 of the slider 45, and the turning shaft 55 is turned by an angle α in the clockwise direction in the drawing. Then, in combination with the urging force of the urging spring 35, the crank arm 30 swings from the second position to the first position about the fulcrum P integrally with the rotation shaft 55 by the crank angle α, and is eccentric. The sickle 20 is pushed and rotated by the connecting protrusion 29 engaged with the hole 25 to be unlocked, and the hook of the sickle receiver T of the sickle receiver T of the distal sickle part 20b is removed and retracted into the lock case 10, thereby Unlock the sliding door A. At that time, as shown in FIG. 2, the sickle 20 is cushioned by the cushion rubber 31 hitting the contact recess 20c. Next, the sliding door A is slid sideways in the opening direction Y that is the same as the unlocking direction while opening the hand on the handle portion 47 of the slider 45 to open.

  When the sliding door A is locked and unlocked in this way, in the illustrated sickle lock, when the slider 45 is slid sideways in the same locking and unlocking direction as the opening and closing direction of the sliding door A by placing the hand on the handle 47, the crank arm 30 is locked. The case 10 is swung within a narrow crank angle α with the rotation shaft 55 of the cam lever 50 as a fulcrum, and according to the swing direction, the sickle 20 is pushed and turned to the locking position and the unlocking position. It can be rotationally displaced to the unlocking position that becomes the posture. Therefore, in the illustrated sickle lock, the crank arm 30 is required to have a narrow swing stroke angle α of approximately 20 degrees necessary for the sickle 20 to rotate between the locked position and the unlocked position. Then, the sliding stroke of the slider 45 that swings the crank arm 30 by converting its motion with the cam lever 50 is also shortened corresponding to the narrow swing stroke α of the crank arm 30. The operability can be improved as much as the stroke required for the sliding operation of the slider 45 is shortened.

  Moreover, in the illustrated sickle lock, when the sliding door A is locked and unlocked, the slider 45 may be slid sideways in the same locking and unlocking direction as the opening and closing direction of the sliding door A by placing a hand on the handle 47, and the locking and unlocking operation direction is And since it is the horizontal direction same as the opening / closing direction of the customary sliding door A, the direction of locking / unlocking operation is easy to understand, and operability can be improved also in this respect. In addition, when locking / unlocking the sliding door A, the slider 45 may be slid sideways in the same locking / unlocking direction as the opening / closing direction of the sliding door A with the hand held on the slider handle 47 of the slider S. When opening and closing the sliding door, it is not necessary to carry out the locking and unlocking operation by moving the sliding door to the external operation part of the sickle lock. This is realized by one operation, and in that respect, the operability can be remarkably improved.

  Further, in the illustrated sickle lock, when the sliding door A is opened and closed, when the sliding door A is locked by unlocking the sliding door A by placing the hand on the handle 47 and sliding the slider 45 sideways in the locking / unlocking direction, FIG. As shown in (C-2), the display plate 64 rotates in the forward / reverse direction integrally with the rotation shaft 55 of the cam lever 50 connected to the slider 45. Then, the display part 64b of the display board 64 is switched and displayed from the display window 71 according to the forward / reverse rotation direction of the display board 64, thereby displaying the locking / unlocking state of the sliding door A to the outside. On the other hand, when the sliding door A is in a locked state in an emergency, for example, when an abnormal situation has occurred and it is desired to unlock and open the sliding door A from the outside, a coin or the like is used for the emergency unlocking operation. The lock opener 65 is rotated by engaging with the keyway 69. Then, the pivot shaft 55 of the cam lever 50 pivots integrally, and the crank arm 30 swings from the second position to the first position by the crank angle α together with the pivot shaft 55, and the sickle 20 is pushed and rotated. The locking posture is adopted, and the distal sickle portion 20b is detached from the sickle receiving recess 81 of the sickle receiver T. Thus, the sliding door A can be emergency unlocked. Even when the sliding door A is opened by performing an emergency unlocking operation from the outside of the sliding door A, the rotation angle of the lock opener 65 for swinging the crank arm 30 is shortened corresponding to the narrow swing stroke α of the crank arm 30. Therefore, in the illustrated sickle lock, the operability can be further improved as the stroke required for the rotation operation of the lock opener 65 is shortened.

A Sliding door D Display F Door frame G Guide means L Installation distance R sickle lock body S Pulling handle T Sickle receiver X Closing direction (locking direction)
Y opening direction (unlocking direction)
α crank angle 10 lock case 14 sickle door 15 sickle shaft 20 sickle 20b tip sickle portion 25 eccentric hole 30 crank arm 33 shaft hole 35 biasing spring 40 trigger 45 slider 48 guide case 50 cam lever 55 rotating shaft 60 bearing hole 65 lock opener

Claims (2)

A lock case installed inside the sliding door with the sickle doorway facing the outside from the mouth of the sliding door end,
Suspended and disengaged between a locking posture in which the sickle portion projects from the sickle doorway and an unlocking posture in which the sickle is retracted into the lock case, and is suspended by a sickle shaft that is horizontally mounted in the lock case. A sickle with an eccentric hole in the head at a position offset to the opposite side of the sickle entrance,
A connecting projection is provided at the distal end, and the connecting projection is engaged with the eccentric hole and connected to the sickle, while a shaft shaft having a hole shape through which the rotation shaft is inserted so as to be able to transmit rotation is provided at the base end. The sickle is pivotally supported in the lock case by the pivot shaft so as to be swingable between a first position where the sickle is locked and a second position where it is unlocked, and between the eccentric hole of the sickle and the pivot shaft A crank arm constructed horizontally to the sickle doorway in the vertical direction;
A handle connected to the crankcase and assembled to the lock case via the rotating shaft;
The crank arm is
When the construction distance L spanning between the pivot shaft and the eccentric hole is at the position of the connecting projection when the sickle is pivoted about the sickle shaft and is at the first position, and at the second position. The crank angle α between the half lines connecting the positions of the connecting projections to the center point of the rotation shaft swings between the first position where the sickle is in the locking position and the second position where the sickle is in the unlocking position. Set the side to a length that is narrower than the angle to be
The puller is
While the fitting groove is recessed on the inside, the handle is provided on the outside, the slider is slidably guided by the guide means, and the rotating shaft is erected at the base end of the lever body, while the tip is And a cam lever that is erected in a direction opposite to the rotation shaft, and that is fitted in the fitting groove and connected to the slider. The slider has a sliding direction in the crank. A sickle for sliding doors, wherein the pivot shaft is inserted into a shaft hole of the crank arm in accordance with a sliding door opening / closing direction that coincides with the arm erection direction, and the cam lever is connected to the crank arm so as to be integrally rotatable. Tablets.   A lock opener for emergency unlocking operation is provided from the opposite side of the handle with the lock case interposed therebetween, and the lock opener includes a disk portion in which a key groove for emergency unlocking is engraved, and the disk portion. A cylindrical shaft hole projecting, and a hole-shaped connecting hole capable of transmitting rotation in accordance with the rotating shaft of the cam lever is formed in the cylindrical shaft portion in the axial direction, and the rotating hole is rotated in the connecting hole. The sickle lock for sliding doors according to claim 1, wherein a tip of a shaft is fitted and connected to the cam lever and the crank arm so as to be integrally rotatable.

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