JP2006225904A - Hook lock with opening supporting mechanism and fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hook lock capable of simultaneously supporting the unlocking of a hook bolt and the opening of a sash by one operating handle and provided with an opening supporting mechanism. <P>SOLUTION: The hook lock comprises a hook bolt 15; a thumb-turn lever 16; a trigger 17; the opening supporting mechanism; and a case 10 for housing them. The opening supporting mechanism includes a kick lever 42 which reciprocatingly rocks; a return spring 46; and the operating handle 45 for operating the kick lever 42. The kick lever 42 and the hook bolt 15 are connected to each other via a link bar 47. When a sash 4 in an completely closed state is operated to forcefully open by the operating handle 45, the handle movement of the operating handle 45 is transmitted to the hook bolt 15 by the link bar 47 to change over the hook bolt 15 in a locked state into an unlocked state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sickle lock applied to a sliding door, in particular, a sickle lock with an opening support mechanism, and a joinery including this type of sickle lock.

  A sliding door provided with an opening support mechanism is known, for example, from Patent Document 1. There, an operating lever that swings horizontally is provided in the opening frame on the closed end side of the shoji so that the shoji can be forcibly opened by lever action of the operating lever. In order to prevent the hook bolt of the sickle lock from projecting out of the case and switching to the locked posture when the shoji is in the open position, a trigger mechanism is provided inside the lock. It is known.

JP-A-8-135302 (paragraph number 0018, FIG. 4) Japanese Patent Laid-Open No. 9-4303 (paragraph number 0015, FIG. 1)

  According to the sickle lock of Patent Literature 2, the hook bolt can be engaged with the striker and locked only by fully closing the shoji. Thus, the sickle lock that can automatically lock the hook bolt can save the trouble of switching the hook bolt to the locking posture. However, since the hook bolt is automatically engaged every time the shoji is fully closed, the user may be locked out unexpectedly. For example, when a shoji is arranged facing the terrace, if the shoji is fully closed from the terrace, the sickle lock is locked and the door is locked out of the room.

  In the above sickle lock, the hook bolt is switched to the unlocking posture by rotating the unlocking operation handle, and the state is maintained by the trigger. If an opening support mechanism such as that of Patent Document 1 is added to this type of sickle lock, the shoji can be opened easily. However, simply adding an opening support mechanism has a practical problem because the shoji must be forcibly opened with the operating lever for opening while unlocking with the operating handle for unlocking. Since the operation handle and the operation lever are exposed on the surface of the sickle lock, there is a problem in appearance.

  An object of the present invention is to provide a sickle lock with an opening support mechanism that can unlock a hook bolt and simultaneously support the opening of a shoji by only one tilting operation of an operation handle. An object of the present invention is to provide a sickle lock with an opening support mechanism that can prevent a user from being unexpectedly locked out. SUMMARY OF THE INVENTION An object of the present invention is to provide a sickle lock with an opening support mechanism that can perform unlocking of a hook bolt and opening support of a shoji in a single operation with a single operation handle, and thus is easy to operate and has a clean appearance. There is. The objective of this invention is providing the joinery provided with the sickle lock with a previous opening assistance mechanism.

  The sickle lock of the present invention is a hook bolt 15 that engages and disengages with the striker 4 with respect to the case 10 attached to the shoji 2, a thumb turn lever 16 that switches the hook bolt 15 between a locked posture and an unlocked posture, A trigger 17 for restricting the unlocked hook bolt 15 from switching to the locked posture and an opening support mechanism are provided. The opening support mechanism includes a kick lever 42 that is pivotally supported so as to be able to reciprocate between a standby posture in the case 10 and an operation posture in which a part of the release support mechanism protrudes outside the case 10, and the kick lever 42 toward the standby posture. And a return spring 46 that moves and biases, and an operation handle 45 that switches the kick lever 42 to the operating posture against the biasing force of the return spring 46. The kick lever 42 and the hook bolt 15 are connected to each other via a link rod 47 so that the operation handle 45 can be operated in the state in which the shoji 2 in the fully closed state is forcibly opened by the operation handle 45. The hook bolt 15 can be unlocked from the locked state in conjunction with the above.

  The link bar 47 and the hook bolt 15 are connected via a connection pin 52 fixed to the link bar 47 and an interlocking groove 24 formed in the hook bolt 15. The interlocking groove 24 is formed so as to be able to absorb the relative rotation operation of the connecting pin 52 and the interlocking groove 24 when the hook bolt 15 reciprocally rotates between the unlocking posture and the locking posture. For example, it can be formed in a letter shape as shown in FIG. Only when the kick lever 42 is in the standby position and the trigger 17 is switched to the restriction release position, the hook bolt 15 can be switched between the unlocked position and the locked position by the thumb turn lever 16.

  The connecting pin 52 for connecting the link rod 47 and the hook bolt 15 is guided by a guide groove 54 formed in the case 10, and the hook bolt 15 is switched to the locked state as shown in FIG. It is formed in a direction intersecting with the interlocking groove 24 in the state. Thus, in a state where the kick lever 42 is tilted toward the operating posture with the operation handle 45, the hook bolt 15 is unlocked prior to the kick lever 42 contacting the door frame 1 or the striker 4. Switching operation can be made possible.

  The hook bolt 15 is integrally provided with an interlocking portion 22 to which the thumb turn shaft 20 is fixed and a hook-shaped hook arm 23 continuous to the interlocking portion 22, and between the interlocking portion 22 and the case 10, A kick spring 18 that can hold the hook bolt 15 in the unlocking posture and the locking posture can be disposed.

  The trigger 17 includes a slide piece 28 that is guided and supported by the case 10 so as to be freely retractable, an engagement piece 30 that is pivotally supported at one end and coupled to the slide piece 28 at the other end, and a slide piece 28. An unlocking restricting posture in which the engaging piece 30 is engaged with an engaging portion 26 provided on the hook bolt 15 to restrict the unlocking operation of the hook bolt 15; It is possible to displace the hook bolt 15 to a restriction release posture that retreats out of the rotation locus of the hook bolt 15.

  The joinery of the present invention includes an opening frame 1 having an upper frame 1a, a lower frame 1b, and left and right vertical frames 1c and 1c, a shoji 2 supported by the opening frame 1 so as to be opened and closed, and a sickle lock with an opening support mechanism. It has. The sickle lock is operated by switching the case 10 attached to the shoji 2, the striker 4 attached to the vertical frame 1c, the hook bolt 15 engaged with and disengaged from the striker 4, and the hook bolt 15 between the locked posture and the unlocked posture. And the above-mentioned sickle lock provided with a trigger 17 for restricting the unlocked hook bolt 15 from switching to the locked position, and an opening support mechanism.

  In the present invention, the sickle lock is constituted by the hook bolt 15, the thumb turn lever 16, the trigger 17, the opening support mechanism, and the case 10 for housing them. The opening support mechanism includes a kick lever 42, a return spring 46 for the kick lever 42, an operation handle 45 for switching the kick lever 42, and the like, and the kick lever 42 that contacts the door frame 1 and the striker 4. By tilting the operation handle 45, the fully-closed shoji 2 can be forcibly opened.

  Further, the kick lever 42 and the hook bolt 15 are connected by a link rod 47 so that the hook bolt 15 can be unlocked in conjunction with the handle operation of the operation handle 45. Therefore, according to the sickle lock of the present invention, simply by tilting the operation handle 45, the unlocking of the hook bolt 15 and the opening support of the shoji 2 can be performed at once. Moreover, sickle tablets with a clean appearance can be provided.

  When the relative rotation of the connecting pin 52 and the interlocking groove 24 when the hook bolt 15 reciprocally rotates between the unlocking position and the locking position can be absorbed by the interlocking groove 24, the hook bolt 15 is turned to the thumb turn. When the lever 16 is operated to switch between the unlocking posture and the locking posture, the opening support mechanism is prevented from operating in conjunction with the pivoting operation of the hook bolt 15. Therefore, the posture change of the hook bolt 15 by the thumb turn lever 16 can be easily performed with a smaller force. Since the thumb turn lever 16 is operated to change the posture of the hook bolt 15, the user is not locked out outdoors.

  Only when the kick lever 42 is in the standby posture and the trigger 17 is switched to the restriction release posture, the posture of the hook bolt 15 can be changed because the hook bolt 15 is in the locked posture when the shoji 2 is opened. This is to prevent switching. That is, when the shoji 2 is closed and operated with the hook bolt 15 protruding out of the case 10, the hook bolt 15 collides with the striker 4, and either of these 4 and 15 is damaged. In order to avoid such a situation, the posture change of the hook bolt 15 is regulated by the trigger 17.

  When the connecting pin 52 for connecting the link rod 47 and the hook bolt 15 is guided to move by the guide groove 54 formed in the case 10 and the guide groove 54 is formed in the direction intersecting the interlocking groove 24, as shown in FIG. When the kick lever 42 is tilted to the operating posture by the operation handle 45, the connecting pin 52 can be forcibly guided and moved in the unlocking direction of the hook bolt 15 by the guide groove 54. That is, the posture of the hook bolt 15 can be quickly switched by moving the connecting pin 52 slightly. Therefore, the shoji 2 can be moved to the kick lever while the hook bolt 15 is always switched to the unlocked state. 42 can be opened smoothly and lightly. When the shoji 2 is opened, the hook bolt 15 can always be held in an unlocked state, so that the shoji 2 can be opened smoothly even when the operation handle 45 is tilted and the lock mechanism is broken. There is nothing.

  When the kick spring 18 is arranged between the interlocking portion 22 of the hook bolt 15 and the case 10, a moment in the direction of holding each posture acts on the hook bolt 15 switched to the unlocking posture and the locking posture. To do. Therefore, it is possible to reliably prevent the posture of the hook bolt 15 from being changed due to external vibration or the like.

  Further, the other spring arm of the kick spring 18 is hooked with a point on the line connecting the center of the pin 34 to which one spring arm of the kick spring 18 is hooked and the center of the thumb turn shaft 20 as a dead point. The hook bolt 15 can be forcibly rotated by the kick spring 18 in either the unlocking direction or the locking direction depending on which side of the previous dead point the center of the locking pin 25 is located. The posture of the hook bolt 15 can be switched quickly. For example, when the thumb turn lever 16 switches the posture of the hook bolt 15, the hook bolt 15 can be switched between the snapping and unlocking posture and the locking posture by switching the thumb turn lever 16 to a halfway position.

  When the trigger 17 is constituted by the slide piece 28, the engagement piece 30 connected to the slide piece 28, the trigger spring 19, and the like, it is detected whether the shoji 2 is in the closed state and the unlocking direction of the hook bolt 15 Since the slide piece 28 and the engagement piece 30 share and control the rotation restriction of the hook bolt 15, there is no room for malfunction, and the rotation restriction action of the hook bolt 15 by the trigger 17 is stable over a long period of time. Can demonstrate.

  According to the joinery provided with the opening support mechanism as described above, the opening of the shoji 2 can be supported by unlocking the hook bolt 15 with only one tilting operation of the operation handle 45. Even a weak user can easily and reliably open the shoji 2.

(Example) FIG. 1 thru | or FIG. 9 shows the Example of the sickle lock based on this invention. In FIG. 2, reference numeral 1 is a door frame, and 2 is a pair of left and right shojis that can be drawn. Between each shoji 2 and 2 and the vertical frame of the door frame 1, the sickle lock of the present invention is arranged. The door frame 1 includes an upper frame 1a, a lower frame 1b, and left and right vertical frames 1c and 1c. The door frame 1 is opened and closed by guide rails provided on the upper frame 1a and the lower frame 1b. Each shoji 2 is composed of a shoji frame 2a in which aluminum strips are assembled in a square frame shape, and a plate glass 2b fitted into the shoji frame 2a. The upper and lower guide rails provided on the door frame 1 are supported by a door pulley or runner. Can be opened and closed. Reference numeral 5 denotes a crescent lock.

  The sickle lock is composed of a lock main body 3 arranged on the indoor side of the shoji frame 2 a and a striker 4 fastened and fixed to the vertical frame of the door frame 1. The lock body 3 is fixed to the indoor side wall of the vertical frame by a mounting base 8 (see FIG. 6) that is disposed in the vertical frame of the shoji frame 2a and fastened and fixed with screws, and a screw 9 that is screwed into the mounting base 8. Case 10, a lock mechanism incorporated in the case 10, an opening support mechanism, and the like. The striker 4 is provided with an engagement port 4a for allowing a hook bolt 15 described later to enter and exit, and an engagement wall 4b for lockingly engaging a latching arm.

  In FIG. 3, the case 10 includes an inner case 11 and an outer case 12. The inner case 11 is composed of a vertically long base plate 11a and a frame plate 11b fastened and fixed in a posture parallel to the base plate 11a, and most components of the lock mechanism are disposed between the opposing surfaces of the both 11a and 11b. . Reference numeral 13 denotes a plastic cover that covers the outer surface of the outer case 12. In addition, in each figure of FIG.1, FIG.7, FIG.8 and FIG. 9, in order to make a lock structure easy to understand, the internal structure of the state which abbreviate | omitted the inner case 11 is shown.

  3 and 4, the locking mechanism includes a hook bolt 15 that engages and disengages with the striker 4, a thumb turn lever 16 that switches the hook bolt 15 between a locking posture and an unlocking posture, and a hook bolt 15 that is unlocked. A trigger 17 that restricts switching to the posture, a kick spring 18 that biases the hook bolt 15 to rotate, and a trigger spring 19 that moves and biases the trigger 17 are included.

  In FIG. 4, the hook bolt 15 is integrally provided with an interlocking portion 22 to which the thumb turn shaft 20 is fixed and a hook-shaped hooking arm 23 continuous to the interlocking portion 22, and two press fittings punched in the same shape. Caulked and fixed in a stacked state

  The interlocking portion 22 is formed with a connecting hole for receiving the thumb turn shaft 20 having a square cross section. An interlocking groove 24 is formed around the connecting hole, and a latch pin 25 for the kick spring 18 is provided around the periphery of the interlocking portion 22. Fix it. An engagement portion 26 that engages with an engagement piece 30 described later is formed on one side of the proximal end of the latch arm 23.

  The hook bolt 15 has a locking posture (the state shown in FIG. 8) in which the hook-shaped hooking arm 23 protrudes from the side surface of the case 10 and engages the striker 4, and the hook arm 15 is separated from the striker 4. It can be rotated and displaced to an unlocked posture (state shown in FIG. 9) that fits inside.

  This posture change is possible only in the state where the trigger 17 is switched to the restriction release posture as shown in FIG. 7, and the hook bolt 15 is switched between the locked posture and the unlocked posture by the thumb turn lever 16. Further, when the shoji 2 is forcibly opened by the opening support mechanism, the hook bolt 15 can be simultaneously switched to the unlocking posture in conjunction with the tilting operation of the operation handle 45.

  The trigger 17 is pivotally supported by a slide piece 28 that is guided and supported by a guide groove 27 (see FIG. 4) formed in the base plate 11a so as to be slidable and retractable, and a pin 29 whose one end is fixed to the frame plate 11b. The other end is constituted by an engagement piece 30 connected to the slide piece 28, and a trigger spring 19 that urges the slide piece 28 to advance toward the outside of the case.

  The slide piece 28 is made of a horizontally long plastic block, and is arranged in a gap between the base plate 11a and the shoji frame 2a (see FIG. 6). In this way, when the slide piece 28 is arranged along the shoji frame 2a, the protruding portion does not get in the way when one end of the slide piece 28 protrudes outward from the case 10, so that clothes or the like are caught on the protruding end. Can be prevented.

  In the trigger 17, the advanced end of the slide piece 28 is received by the surface of the striker 4, and the restriction releasing posture (the state shown in FIG. 7) in which most of the portion retreats into the case, and the unlocking operation of the hook bolt 15. Can be displaced to an unlocking restriction posture (state shown in FIG. 9). The engagement piece 30 in the restriction release posture is retracted out of the rotation trajectory of the hook bolt 15 or is received by the arc peripheral surface of the interlocking portion 22 as shown in FIG.

  As shown in FIG. 9, when the shoji 2 is in the open position, that is, in a state where the claw 31 of the engagement piece 30 is engaged with the engagement portion 26 and the locking operation of the hook bolt 15 is restricted. It is possible to prevent the stop arm 23 from protruding out of the case 10. Therefore, when the shoji 2 is closed, the latch arm 23 is reliably prevented from colliding with the striker 4 and being damaged.

  Similar to the hook bolt 15, the engagement piece 30 is formed by stacking and fixing the same press plate-shaped press fittings, and the rounded lower end side is pivotally supported by a pin 29 so as to be swingable. A claw 31 that engages with the engaging portion 26 of the hook bolt 15 is formed at the upper end.

  The engagement piece 30 and the slide piece 28 are connected so as to be interlocked via a pin 32 fixed to the engagement piece 30. However, in order to absorb the difference in the trajectory between the two, the connection hole on the slide piece 28 side is formed in the vertical direction. (See FIG. 4). In the base plate 11a, a relief groove that allows the pin 32 to swing is formed in a partial arc shape. One end of the trigger spring 19 is hooked on the pin 32, and the other end is hooked on the frame plate 11b.

  The kick spring 18 is a torsion coil spring in which a ring-shaped latching portion is formed at each of the projecting ends of the spring arms extending from both ends of the coil portion, and a pin 34 having one latching portion fixed to the frame plate 11b. The other hook is hooked on the hook pin 25 fixed to the hook bolt 15.

  As described above, when the kick spring 18 is applied to the hook bolt 15 pivotally supported by the thumb turn shaft 20, when the posture of the hook bolt 15 is switched, the center of the latch pin 25 is positioned between the pin 34 and the center of the thumb turn shaft 20. The posture of the kick spring 18 changes greatly while crossing the connecting line. As a result, the rotational moment by the kick spring 18 acts in the opposite direction with respect to the hook bolt 15, so that the hook bolt 15 switched to the unlocking posture or the locking posture can be held in each posture.

  The inner case 11 and the lock mechanism incorporated in the inner case 11 are incorporated in the outer case 12. In FIG. 3, the outer case 12 is formed of a rectangular box-like press fitting that is open on the mounting surface side and is vertically long, and has a doorway 35 for a kick lever 42, which will be described later, and a hook on a side wall facing the door frame 1. An exit / exit port 36 for the bolt 15 and an exit / exit port 37 for the slide piece 28 are opened, and a shaft hole 38 for an operation shaft 43, which will be described later, and a thumb turn shaft 20 A shaft hole 39 or the like is opened. The cover 13 covering the outer surface of the outer case 12 is also formed with openings corresponding to the exit ports and the shaft holes.

  The opening support mechanism includes a kick lever 42 disposed between the inner case 11 and the outer case 12, an operation shaft 43 fixed to the upper portion of the kick lever 42, and a free-wheeling support at the lower end of the kick lever 42. Roller 44, an operation handle 45 coupled to the operation shaft 43 on the outer surface of the cover 13, a return spring 46 for returning and urging the kick lever 42 toward the standby position, and a tilting operation of the kick lever 42 by hook bolts. 15 is composed of a link rod 47 to be transmitted to the terminal 15 or the like.

  The kick lever 42 is formed of a press fitting having a kicking arm projecting downward from the fan-shaped base peripheral surface, and fixes the operation shaft 43 at the upper corner of the base. The operation shaft 43 is rotatably supported by the inner case 11 and the outer case 12, so that the kick lever 42 has a standby posture (state shown in FIGS. 7 and 8) in which the kick lever 42 is entirely accommodated in the case 10. The roller 44 can be rotated back and forth between the operating posture (the state shown in FIG. 9) projecting out of the case 10, and is always urged to return to the standby posture by the return spring 46.

  The link bar 47 is disposed in the gap between the base plate 11a and the shoji frame 2a (see FIGS. 3 and 6), and its upper end is connected to the kick lever 42 via the connection pin 51, and its lower end is the connection pin. It is connected to the interlocking groove 24 of the hook bolt 15 via 52. Therefore, when the operation handle 45 is tilted, the kick lever 42 tilts from the standby position toward the operating position against the urging force of the return spring 46, and the tilting operation of the kick lever 42 is performed via the link rod 47. It is transmitted to 15.

  As shown in FIG. 8, the interlocking groove 24 when the hook bolt 15 is in the locking posture includes a partially arc-shaped groove formed around the axial center of the thumb turn shaft 20 and a tangential linear groove continuous to the groove end. The connecting pin 52 is positioned adjacent to the partial arc-shaped groove and the linear groove.

  In FIG. 4, both ends of the connecting pin 52 are guided and supported by guide grooves 54 formed in the base plate 11a and the frame plate 11b, and the movement locus thereof is restricted. The guide groove 54 has the same shape as the interlocking groove 24 and is formed in a direction intersecting with the interlocking groove 47 when the hook bolt 15 is switched to the locked state as shown in FIG. When the interlocking groove 24 is in the position shown in FIG. 9, both grooves 24 and 54 overlap closely.

  When the movement locus of the connecting pin 52 is defined by the guide groove 54 in this way, when the operation handle 45 is tilted, the rotation of the hook bolt 15 in the unlocking direction can be accelerated, and the roller 44 contacts the striker 4. Prior to hitting, the hook bolt 15 can be switched to the unlocked posture.

  In this embodiment, as shown in FIG. 1, when the peripheral surface of the roller 44 reaches the exit / retreat opening 35, the hook arm 23 of the hook bolt 15 releases the engagement with the striker 4 and the inside of the case 10. Enter. At this time, the center of the latch pin 25 is located at a dead point on a straight line connecting the center of the thumb turn shaft 20 and the center of the pin 34, and when the hook bolt 15 is slightly rotated in the clockwise direction from this state. Thereafter, the hook bolt 15 can be rotated and displaced toward the unlocking posture by the elastic force of the kick spring 18.

  Thereafter, as shown in FIG. 9, the operation handle 45 is further tilted to bring the roller 44 into contact with the striker 4, and the kick reaction force of the kick lever 42 is applied to the shoji 2 to force the shoji 2. Open operation. Therefore, the shoji 2 can be opened easily even under a situation where it is difficult to open the door with wind pressure. The slide piece 28 is pushed out of the case 10 with the opening movement of the shoji 2. Therefore, the engagement piece 30 is swung in the clockwise direction by the trigger spring 19, and the claw 31 is dropped into the engagement portion 26 and engaged as shown in FIG. Regulate the change.

  As described above, the hook bolt 15 can be unlocked in conjunction with the opening operation of the operation handle 45, but the user switches to the locked posture. For example, if the hook bolt 15 can be automatically locked in conjunction with the fully closing operation of the shoji 2, the user may be unexpectedly locked out of the room. In order to prevent such lock-out, the hook bolt 15 is switched to the locked state by the thumb turn lever 16 so that the hook bolt 15 cannot be locked unless there is a clear intention of the user.

  In the state where the shoji 2 is fully closed as shown in FIG. 7, the slide piece 28 comes into contact with the surface of the striker 4 and is pushed back into the case 10 against the urging force of the trigger spring 19. As the slide piece 28 is retracted, the engagement piece 30 swings counterclockwise, the claw 31 releases the engagement with the engagement portion 26, and the trigger 17 switches to the restriction release posture. . By rotating the thumb turn lever 16 in the counterclockwise direction in this state, the hook bolt 15 can be switched to the locked state, and the latch arm 23 can be engaged with the striker 4. Of course, if necessary, the hook bolt 15 can be switched to the unlocked posture by rotating the thumb turn lever 16 in the reverse direction.

  As described above, when the thumb turn lever 16 is rotated and the hook bolt 15 is switched between the unlocking position and the locking position, the thumb turn lever 16 is switched when the unlocking support mechanism is moved. I need a lot of power. Therefore, the interlocking groove 24 is formed in a U-shaped groove, and the relative rotation operation of the connecting pin 52 and the interlocking groove 24 when the posture of the hook bolt 15 is switched is absorbed by the interlocking groove 24, and the thumb turn lever 16 is Switching operation can be performed more lightly.

  In the sickle lock constructed as described above, only when the kick lever 42 is in the standby position and the trigger 17 is in contact with the striker 4 or the door frame 1 and switched to the restriction release position, the hook bolt 15 is moved to the thumb turn lever. 16 can be switched between the unlocking posture and the locking posture, and the hook bolt 15 in the locking posture can be switched to the unlocking posture in conjunction with the tilting operation of the operation handle 45.

  The roller 44 of the kick lever 42 can be omitted. In this case, the tip of the kicking arm is brought into contact with the door frame 1 or the striker 4 to forcibly open the shoji 2. The slide piece 28 can be configured to contact the door frame 1 and retract into the case 10.

  In the embodiment described above, the hook bolt 15 is unlocked prior to the kicking operation of the kick lever 42. However, the kicking operation of the kick lever 42 and the unlocking operation of the hook bolt 15 are performed simultaneously. There may be.

It is a longitudinal front view of a sickle lock, and a hook bolt is in the middle of unlocking. It is a front view of a sliding door. It is a disassembled perspective view of a sickle lock. It is a disassembled perspective view of a locking mechanism. It is a vertical side view of a sickle lock. It is the sectional view on the AA line in FIG. It is a longitudinal front view of a sickle lock, and the trigger is in a deregulated state. It is a longitudinal front view of a sickle lock, and the hook bolt is in a locked state. It is a longitudinal front view of a sickle lock, and the hook bolt is in an unlocked state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door frame 2 Shoji 4 Striker 10 Case 15 Hook bolt 16 Thumb turn lever 17 Trigger 18 Kick spring 19 Trigger spring 20 Thumb turn shaft 22 Interlocking part 23 Latching arm 24 Interlocking groove 26 Engaging part 28 Slide piece 30 Engaging piece 42 Kick lever 45 Operation handle 46 Return spring 47 Link bar 52 Connecting pin 54 Guide groove

Claims (6)

A hook bolt (15) that engages and disengages the striker (4) and a thumb turn lever (16) that switches the hook bolt (15) between a locked posture and an unlocked posture on a case (10) attached to the shoji (2). ), A trigger (17) that restricts the unlocked hook bolt (15) from switching to a locked posture, and an opening support mechanism,
The opening support mechanism includes a kick lever (42) that is pivotally supported so as to be able to reciprocate between a standby posture in the case (10) and an operating posture in which a part of the opening assist mechanism protrudes out of the case (10), and a kick lever A return spring (46) for moving and biasing (42) toward the standby posture, and an operation handle (45) for switching the kick lever (42) to the operating posture against the biasing force of the return spring (46). Including
The kick lever (42) and the hook bolt (15) are connected to each other via a link bar (47),
In a state where the fully closed shoji (2) is forcibly opened with the operation handle (45), the hook bolt (15) can be unlocked from the locked state in conjunction with the handle operation of the operation handle (45). Sickle with support mechanism. The link rod (47) and the hook bolt (15) are coupled via a coupling pin (52) fixed to the link rod (47) and an interlocking groove (24) formed in the hook bolt (15). ,
The interlocking groove (24) can absorb the relative rotation of the connecting pin (52) and the interlocking groove (24) when the hook bolt (15) reciprocally rotates between the unlocking position and the locking position. Is formed,
The hook bolt (15) can be switched between the unlocking position and the locking position with the thumb turn lever (16) only when the kick lever (42) is in the standby position and the trigger (17) is switched to the restriction release position. A sickle lock with an opening support mechanism according to claim 1. The connection pin (52) for connecting the link rod (47) and the hook bolt (15) is guided by a guide groove (54) formed in the case (10),
The guide groove (54) is formed in a direction intersecting the interlocking groove (24) in a state where the hook bolt (15) is switched to the locked state,
In a state in which the kick lever (42) is tilted toward the operating posture with the operation handle (45), the hook bolt (15) is placed before the kick lever (42) hits the door frame (1) or the striker (4). The sickle lock with an opening support mechanism according to claim 2, which can be switched to an unlocked state. The hook bolt (15) is integrally provided with an interlocking portion (22) to which the thumb turn shaft (20) is fixed and a hook-shaped hooking arm (23) continuous to the interlocking portion (22).
The kick spring (18) capable of holding the hook bolt (15) in the unlocked position and the locked position is disposed between the interlocking portion (22) and the case (10). Sickle with an opening support mechanism. A trigger (17) is engaged with a slide piece (28) that is guided and supported by a case (10) so as to be freely retractable, and one end of which is pivotally supported and the other end is coupled to the slide piece (28). It consists of a piece (30) and a trigger spring (19) that urges and advances the slide piece (28),
The engagement piece (30) engages with an engagement portion (26) provided on the hook bolt (15) to restrict the unlocking operation of the hook bolt (15), and the hook bolt (15 5) The sickle lock with an opening support mechanism according to any one of claims 1 to 4, wherein the sickle lock is displaceable to a restriction release posture that retreats to the outside of the rotation locus. An opening frame (1) having an upper frame (1a), a lower frame (1b), and left and right vertical frames (1c, 1c), and a shoji (2) supported by the opening frame (1) so as to be openable and closable. A joinery with a sickle lock with an opening support mechanism,
A case (10) in which the sickle lock is attached to the shoji (2), a striker (4) attached to the vertical frame (1c), a hook bolt (15) to be engaged with and disengaged from the striker (4), and a hook bolt A thumb turn lever (16) for switching (15) between a locked posture and an unlocked posture, a trigger (17) for restricting the unlocked hook bolt (15) from switching to the locked posture, and an opening support mechanism A joinery that is a sickle lock with an opening support mechanism according to any one of claims 1 to 5.

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