JP4615326B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device that locks by performing a manual operation after closing a shoji.

Conventionally, a crescent lock is known as a representative example of this type of locking device. The Crescent lock is a locking device that locks between a pair of shoji screens. In this crescent lock, the so-called “empty hanging” which has been locked but is not locked because the shoji is in a half-open state has been a problem. On the other hand, various crescent locks having an anti-hanging function have been developed (see, for example, Patent Document 1). Further, while the crescent lock locks between a pair of shojis, a lock device that locks between the shojis and the frame by a manual operation is also known (see, for example, Patent Document 2). ).
Japanese Patent Laid-Open No. 9-158585 (paragraphs [0007] and [0008] FIG. 4) JP-A-10-220090 (paragraphs [0027] [0028], FIG. 7)

  By the way, in the locking device that locks between the shoji and the frame, it is difficult to cause the emptying compared to the crescent lock, and thus a locking device having an emptying preventing function has not been developed. However, as security deteriorates, there is a strong demand for development of a locking device that locks between a shoji and a frame, which has a function to prevent emptying.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lock device that can prevent empty hanging and can securely lock between a shoji and a frame.

The locking device according to the invention of claim 1 made to achieve the above object is a locking device that is assembled to one of the shoji or the frame having the shoji inside, and is disposed opposite to the striker provided to the other. And a latch that can be rotated between a locking position and an unlocking position, and a latch operating portion for manually rotating the latch. When the shoji is closed, the latch is unlocked. In the locking device that rotates from the locked position to the locked position and engages with the striker, the latch is engaged with the latch in a state where the shoji is opened, and the rotating operation of the latch from the unlocked position to the locked position is prohibited. When the striker enters the engageable area engageable with the latch in the process of closing the shoji, it is pushed and actuated by the trigger contact portion provided on the side of the shoji or frame provided with the striker. To disengage the latch. A trigger that allows the rotation operation of the latch, the latch is movable between a first position that allows to rotate the locking position from the unlocking position, engages the latch locking position and a second position to secure the latch A pawl that can be pivoted between the latch, a latch pawl interlocking mechanism that pivots the pawl from the first position to the second position in conjunction with the pivot of the latch from the unlocked position to the locked position, and a latch in the locked position And a pole operation part for releasing the engagement between the pole and the pole by manual operation. The pole operation part can be moved directly, and a pivot arm that is rotated by being pushed by the pressed pole operation part is poled. And the entire pole rotates together with the rotating arm so that the engagement with the latch is released .

The locking device according to the invention of claim 2 is a locking device assembled to one of the shoji or one of the frames having the shoji inside, and disposed opposite to the striker provided to the other, and includes a locking position and an unlocking position. And a latch operation part for manually rotating the latch, and with the shoji closed, the latch is rotated from the unlocked position to the locked position. In a locking device that is locked by being engaged with a striker, while the shoji is open, it engages with the latch to prohibit the turning operation of the latch from the unlocking position to the locking position, and in the process of closing the shoji, When the arm enters the engageable area that can be engaged with the latch, it is pushed by the trigger abutting part provided on the side with the striker of the shoji or frame to release the engagement with the latch. And a trigger that allows the latch to rotate. And a pole rotatable between a first position that allows the latch to rotate from the unlocked position to the locked position, and a second position that engages and locks the latch at the locked position; In conjunction with the rotation of the latch from the unlocked position to the locked position, the latch pole interlock mechanism that rotates the pole from the first position to the second position and the engagement between the latch and the pole at the locked position are manually performed The latch, trigger, and pole are rotatably mounted on one surface of the common sheet metal base, and the sheet metal base is provided with a latch, trigger, and pole. Each of the three types of attachment portions is provided at two positions symmetrical with respect to the line, and the latch, the trigger, and the pole can be assembled by selecting one of the two positions .

A locking device according to the invention of claim 3 is a locking device that is assembled to one of the shoji or a frame having the shoji inside, and is disposed opposite to the striker provided to the other, and includes a locking position and an unlocking position. And a latch operation part for manually rotating the latch, and with the shoji closed, the latch is rotated from the unlocked position to the locked position. In a locking device that is locked by being engaged with a striker, while the shoji is open, it engages with the latch to prohibit the turning operation of the latch from the unlocking position to the locking position, and in the process of closing the shoji, When the arm enters the engageable area that can be engaged with the latch, it is pushed by the trigger abutting part provided on the side with the striker of the shoji or frame to release the engagement with the latch. And a trigger that allows the latch to rotate. And over, a first position in which the latch is allowed to rotate in the locking position from the unlocking position, a rotatable pawl and a second position for fixing the engaging latched in the latch of the locking position In conjunction with the rotation of the latch from the unlocked position to the locked position, the latch pole interlock mechanism that rotates the pole from the first position to the second position and the engagement between the latch and the pole at the locked position are manually performed And a pole operating part for releasing by operation, and a latch, a trigger and a pole are assembled to one surface of a common sheet metal base so as to be rotatable. A base fixing portion is provided that is fixed to be overlapped with the provided lock fixing surface, and the latch operation portion is characterized in that it extends substantially parallel to one surface from the rotation center of the latch so as to protrude from the lock fixing surface. .

The invention according to claim 4, in the lock device according to claim 1, latches, triggers and Paul, pivotally mounted on one surface of the common sheet metal base, the sheet metal base, latch, for triggering Each of the three types of mounting portions for the pole and the pole is provided at two positions symmetrical with respect to the line, and the latch, the trigger and the pole can be assembled by selecting any one of the two positions.

According to a fifth aspect of the present invention, in the locking device according to any one of the first , second, and fourth aspects, the latch, the trigger, and the pole are rotatably assembled to one surface of the common sheet metal base. A base fixing portion that is perpendicular to one surface and overlapped and fixed to a lock fixing surface provided on one of the shoji or the frame is provided, and the latch operation portion is a rotation center of the latch so as to protrude from the lock fixing surface. It is characterized by extending substantially parallel to one surface.

According to a sixth aspect of the present invention, in the locking device according to the third or fifth aspect , the sheet metal base is provided with a housing-like cover that covers the rotation area of the latch operation portion, and the cover is provided with a rotation of the latch operation portion. An arc-shaped portion corresponding to the movement locus is provided, and the tip of the latch operation portion is exposed to the outside of the cover through a slit formed in the tip arc wall of the arc-shaped portion.

According to a seventh aspect of the present invention, in the locking device according to the sixth aspect , a movable arc member that is overlapped on the tip arc wall from the inside is fixed to the latch operation portion, and the movable arc member is configured to rotate the latch operation portion. It is characterized in that it is formed in a length that always closes the slit regardless of the position.

The invention of claim 8 is characterized in that, in the lock device according to claim 7 , a resin cap is provided at the tip of the latch operation portion, and a movable arc member is integrally formed at the base end portion of the resin cap. Have.

The invention of claim 9 is the locking device according to any one of claims 6 to 8 , wherein the side of the pole operating part is covered with a cover, and the tip of the pole operating part is exposed from the cover to the outside. It has features.
According to a tenth aspect of the present invention, in the locking device according to any one of the first to ninth aspects, the latch moves the striker in the engageable region in the process of rotating from the unlocked position to the locked position. It is characterized in that it is configured to be pulled toward the lock device side.

[Inventions of Claims 1 to 5 ]
According to the lock device of claims 1 to 5 , even when the shoji is intended to be closed, if the half-open state, the striker does not enter the engageable region engageable with the latch, and the trigger is engaged with the latch. And the pivoting operation of the latch from the unlocked position to the locked position is prohibited. Then, when the shoji is closed to the position where the striker has entered the engageable area engageable with the latch, the engagement between the trigger and the latch is released, and the rotation operation of the latch from the unlocked position to the locked position is performed. Allowed and can be locked. Thereby, emptying is prevented, and the space between the shoji and the frame can be reliably locked.

According to the lock device of claims 1 to 5 , when the shoji is closed and the latch is rotated from the unlocked position to the locked position, the pawl is interlocked with the latch to engage the latch. In the locked position. Further, when unlocking, by operating the pole operating portion, the engagement between the latch at the lock position and the pawl is released, and the latch can be returned from the lock position to the unlock position. According to the lock device of the first aspect , it is possible to release the engagement between the pole and the latch by rotating the pole by the pressing operation of the pole operating portion.

Further , according to the lock device of claims 2 and 4 , since the three types of attachment portions for latch, trigger and pole are respectively provided in two line symmetrical positions of the sheet metal base, the lock device is Depending on the mounting position, either one of the two positions on the sheet metal base can be selected to assemble the latch, trigger and pole. That is, the lock device can be rearranged to specifications according to the mounting position of the lock device by diverting each component such as a sheet metal base and a latch.

Further, the lock device according to claim 3 and 5, by in a state of inserting the lock device into a hole formed in the lock fixing surface of the shoji or frame for fixing overlapping the base fixing portion in the key fixing surface, shoji or frame It is possible to fix the locking device.

[Invention of claim 6 ]
According to the lock device of the sixth aspect , it is possible to improve the appearance by covering the latch operation portion other than the tip portion necessary for the operation with the cover.

[Inventions of Claims 7 and 8 ]
According to the lock device of the seventh aspect , since the slit can always be closed by the movable arc member regardless of the rotation position of the latch operation portion, the appearance is further improved. Here, it is preferable that the movable arc member is integrally formed at the base end portion of the resin cap that is attached to the distal end of the latch operation portion (invention of claim 8 ).

[Invention of claim 9 ]
According to the lock device of the ninth aspect , it is possible to improve the appearance by covering the pole operation portion other than the tip portion necessary for the operation with the cover.
[Invention of Claim 10]
According to the lock device of the tenth aspect, the striker in the engageable region is drawn toward the lock device side in the process in which the latch is rotated from the unlocked position to the locked position, and thereby, between the shoji and the frame. It is possible to crush an elastic member for the purpose of preventing a draft.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
A window sash 10 shown in FIG. 1 includes a shoji 12 inside a vertically long rectangular window frame 11 (corresponding to the “frame” of the present invention), and the shoji 12 has a vertically long rectangular frame shape. It has a structure in which a glass plate 12G is stretched on the inner side of the finished ridge 12W. Further, between the upper sides of the shoji 12 and the window frame 11 and between the lower sides, shoji support arms 13 and 13 (only the lower shoji support arm 13 is shown in FIG. 1). Each is handed over. Then, the shoji support arms 13 and 13 are rotated by the operation of the opening / closing handle 14 attached to the indoor surface of the window frame 11, and the shoji 12 is rotated and opened while being slid horizontally. In addition, when the shoji 12 is in an open state, both side portions of the shoji 12 protrude into the indoor side and the outdoor side. Such a structure is generally called a “vertical protruding structure”.

  The locking device 20 according to the present invention is attached to a vertical frame member 11T on the right side of the window frame 11 in FIG. Correspondingly, a striker base 60 (see FIG. 2) is attached to the vertical shaft 12T on the right side of the shoji 12. Note that the lock device 20 and the striker base 60 are both disposed at substantially the center in the vertical direction of the vertical frame member 11T and the vertical rod 12T.

  FIG. 2 shows a cross-sectional view of the vertical frame member 11T and the vertical rod 12T taken along the horizontal plane. A shoji joint wall 11B stands upright from an inward wall portion 11A facing the shoji 12 side of the vertical frame member 11T. And the locking device 20 is assembled | attached to 11C of lock | rock assembly holes formed in the base end side of the shoji junction wall 11B. In addition, a belt-like elastic member 11D is attached to the shoji junction wall 11B along the edge of the front end for the purpose of preventing airflow. In addition, the surface (surface which faced the downward direction in FIG. 2) which faced the indoor side in the shoji junction wall 11B is the “lock fixing surface” according to the present invention.

  On the other hand, the vertical gutter 12T has a hollow prismatic shape, and a glass plate accommodation groove 12M that accommodates the edge of the glass plate 12G is formed in the inward wall portion 12A of the vertical gutter 12T. The striker base 60 is attached to the outward wall portion 12B of the vertical rod 12T. Further, the outdoor wall portion 12C of the vertical rod 12T extends from the outward wall portion 12B to the inward wall portion 11A side of the vertical frame member 11T, and covers the outdoor side of the striker base 60. Further, as shown in FIG. 3, the indoor wall portion 12D of the vertical rod 12T is in close contact with the belt-like elastic member 11D while facing the shoji junction wall 11B of the vertical frame member 11T with the shoji 12 closed.

  As shown in FIG. 4, the striker base 60 is formed by bending a sheet metal into a flat “U” shape, and includes a pair of opposed walls 61 and 61 opposed in the horizontal direction. And the striker 63 is passed between the front-end | tips of these opposing walls 61 and 61. As shown in FIG. As shown in FIG. 2, the striker 63 has a cylindrical shape and is provided with a flat disk-like head 63H at one end thereof. And the striker 63 is being fixed to the striker base 60 by screwing the screw 66 in the other end on the opposite side to the head part 63H in the state which penetrated both the opposing walls 61 and 61. As shown in FIG.

  As shown in FIG. 4, projecting pieces 62, 62 project from the base end portion of one opposing wall 61 of the striker base 60 toward the upper side and the lower side. Further, a trigger abutting portion 64 is bent at a right angle from an edge portion of each protruding piece 62 on the locking device 20 side. Further, each projecting piece 62 is formed with elongated holes 65H and 65H that are elongated in the horizontal direction. Then, as shown in FIG. 2, the one opposing wall 61 is directed to the outward wall portion 12B of the vertical shaft 12T, and the bent portion side of the striker base 60 is disposed on the outdoor wall portion 12C side. The striker base 60 is fixed to the vertical rod 12T by a screw 65 passed through the holes 65H and 65H. Thereby, when the shoji 12 is closed, the striker 63 and the trigger contact portions 64 and 64 face the shoji joining wall 11B of the vertical frame member 11T. Further, the screw 66 screwed into the striker 63 is covered by the outward wall portion 12B of the vertical rod 12T, and the striker 63 cannot be detached from the striker base 60 unless the striker base 60 is removed from the vertical rod 12T. It has become.

  Now, the locking device 20 is provided with a sheet metal base 33 screwed to the shoji joint wall 11B, and a latch 34, a trigger 35, a pole 36 and a resin cover 40 are assembled to the sheet metal base 33. As shown in FIG. 4, the sheet metal base 33 is formed by punching and bending a sheet metal into a predetermined shape, and has a symmetrical shape in the vertical direction. Specifically, it is as follows. The sheet metal base 33 generally has a flat plate shape parallel to the inward wall portion 11A side of the window frame 11, and is assembled to the shoji junction wall 11B in a state of penetrating the lock assembly hole 11C. Hereinafter, with respect to the locking device 20, the direction passing through the lock assembly hole 11 </ b> C is referred to as “front-rear direction”, the outdoor side in this direction is referred to as the front side, and the indoor side is referred to as the rear side.

  As shown in FIG. 2, the sheet metal base 33 is bent in a crank shape at an intermediate portion in the front-rear direction (vertical direction in FIG. 2), and the rear end edge of the sheet metal base 33 is bent at a right angle throughout the lock, A rear end wall 33A that covers the entire opening of the assembly hole 11C from the rear is provided. Further, a slit 33B is formed at the center of the rear end wall 33A in the width direction (the left-right direction in FIG. 2). As shown in FIG. 5, the slit 33B extends to a position closer to the upper and lower ends of the rear end wall 33A. It extends. Furthermore, as shown in the figure, the upper and lower end portions of the rear end wall 33A are bent in a crank shape toward the front to form base fixing portions 33C and 33C. Then, the front side portion of the sheet metal base 33 is inserted into the lock assembly hole 11C from the indoor surface side of the shoji joint wall 11B, and the base fixing portions 33C and 33C are overlapped on the opening edge of the shoji joint wall 11B and screwed. The sheet metal base 33 is fixed to the shoji junction wall 11B. Further, a cover fixing portion 33D is bent at a right angle from the upper end portion or the lower end portion of each of the upper and lower base fixing portions 33C, and a cover locking hole 33E is formed in the cover fixing portion 33D. Is formed.

  A striker receiving recess 33S is formed at the front end of the sheet metal base 33 in the center in the vertical direction. The sheet metal base 33 is formed with two circular seat portions 51 and two oval seat portions 50 symmetrically with respect to the striker receiving recess 33S. The circular seat portion 51 and the oval seat portion 50 are formed by raising a part of the sheet metal base 33 to the side opposite to the inward wall portion 11A side of the vertical frame member 11T. Further, the circular seats 51 and 51 are disposed at the front positions at the upper and lower ends of the sheet metal base 33, and a mounting hole 51 </ b> A is formed at the center of each circular seat 51.

  The oval seats 50 and 50 are arranged in the vicinity of the upper portion and the lower portion of the striker receiving recess 33 </ b> S, are formed into an oval shape, and the long axis thereof is inclined toward the side away from the striker receiving recess 33 </ b> S as it goes rearward of the sheet metal base 33. is doing. A pair of mounting holes 50 </ b> A and 50 </ b> B are formed at both ends of the oval seat portion 50 in the major axis direction.

  The trigger 35 is pivotally supported by a mounting pin 51P in a mounting hole 51A in the upper circular seat portion 51 so as to be rotatable. The trigger engagement position shown in FIG. 5 and the latch engagement release position shown in FIG. Rotate between. The trigger 35 has a flat plate structure, and includes a shoji detection arm 35T, a spring locking arm 35S, and a latch locking arm 35K protruding from the center of rotation. As shown in FIG. 5, when the trigger 35 is located at the latch engagement position, the spring locking arm 35S extends obliquely rearward and upward. A coil spring 38 is passed between the tip of the spring locking arm 35S and the protrusion TK1 rising from the sheet metal base 33, and a stopper ST2 formed integrally with the sheet metal base 33 is provided behind the spring locking arm 35S. Is standing. The trigger 35 is urged clockwise in FIG. 5 by the resilient force of the coil spring 38, and is positioned at the latch engagement position by the contact between the spring locking arm 35S and the stopper ST2.

  When the trigger 35 is positioned at the latch engagement position, the shoji detection arm 35T is in a state of extending obliquely forward and downward. The tip of the shoji detection arm 35T has a semicircular shape. When the shoji 12 is closed, the tip of the shoji detection arm 35T comes into contact with the trigger abutting portion 64 on the shoji 12 side, and the trigger 35 rotates counterclockwise. To turn.

  When the trigger 35 is located at the latch engagement position, the latch locking arm 35K extends obliquely rearward and downward, and is abutted against a trigger engagement portion 34J of the latch 34 described below. A movable pin 39P protrudes from the latch locking arm 35K toward the sheet metal base 33, and the movable pin 39P is inserted into an arc hole 39H formed in the sheet metal base 33. When the trigger 35 rotates from the latch engagement position to the latch engagement release position, the movable pin 39P moves from one end to the other end in the arc hole 39H.

  The latch 34 is pivotally supported by a support pin 34P in a front mounting hole 50A in the upper oval seat portion 50 so as to be pivotable between the unlocked position shown in FIG. 5 and the locked position shown in FIG. Rotate between. The latch 34 has a flat plate structure, and a striker engagement piece 34A, a pole engagement piece 34B, and a latch operation lever 34R (corresponding to the “latch operation portion” of the present invention) are projected from the rotation center or the vicinity of the rotation center. Prepared. As shown in FIG. 5, when the latch 34 is located at the unlocked position, the striker engaging piece 34A extends obliquely forward and downward, and the tip of the striker engaging piece 34A is located above the striker 63. Position and open the opening of the striker receiving recess 33S. Further, the upper edge portion of the striker engaging piece 34A abuts on the stopper ST1 erected from the sheet metal base 33, whereby the latch 34 is positioned at the locking position.

  When the latch 34 is located at the unlocked position, the pole engaging piece 34B extends in a vertically downward direction. Further, the pole engaging piece 34B is formed with a front end locking portion 34K having a stepped surface facing forward by extending the rear half of the front end portion to the side having a larger turning radius than the front half.

  The latch operating lever 34R extends horizontally rearward when the latch 34 is located at the unlocked position. Further, a hook portion 34F is formed in the middle portion in the longitudinal direction of the latch operation lever 34R.

  The latch 34 is formed with a trigger engaging portion 34J on the opposite side to the pole engaging piece 34B across the rotation center. Here, as shown in FIG. 5, when the trigger 35 is positioned at the latch engagement position while the latch 34 is positioned at the unlocked position, the latch locking arm 35 </ b> K of the trigger 35 and the trigger engagement portion of the latch 34. 34J is brought into contact with and engaged. Thereby, the rotation of the latch operation lever 34R is prohibited, and the latch 34 is held in the unlocked position. On the other hand, as shown in FIG. 7, when the trigger 35 is rotated to the latch engagement release position by the contact with the trigger contact portion 64, the latch engagement arm 35K and the trigger engagement portion 34J are engaged. As a result, the latch 34 is allowed to rotate from the unlocked position to the locked position.

  The pole 36 is pivotally supported by a support pin 36 </ b> P in a rear mounting hole 50 </ b> B in the lower oval seat 50. The pole 36 has a flat plate structure and is provided with a latch engagement piece 36T, a spring locking piece 36S, and a pole operated lever 36R (corresponding to the “rotation arm” of the present invention) protruding from the center of rotation. As shown in FIG. 5, when the latch 34 is located at the unlocked position, the spring locking piece 36S extends in the horizontal direction, and the tip of the spring locking piece 36S and the latch operating lever 34R described above. A coil spring 37 is interposed between the hook 34F. The pole 36 is urged counterclockwise in FIG. 5 by the elastic force of the coil spring 37.

  The front edge portion of the latch engagement piece 36T has a structure extending upward toward the rear side, and when the latch 34 is positioned in the unlocked position, the front edge portion of the latch engagement piece 36T becomes the pole engagement in the latch 34. It will be in the state slightly entered in the rotation area | region of the joint piece 34B. At this time, the tip of the pole engaging piece 34B is in contact with the base end of the latch engaging piece 36T. Then, in the process in which the latch 34 is rotated from the unlocked position toward the locked position, the latch engaging piece 36T is pushed by the tip locking portion 34K and slightly rotated in the clockwise direction. The space between the operating lever 34R and the spring locking arm 35S expands and the coil spring 37 is extended. Further, when the latch 34 reaches the locking position, as shown in FIG. 8, the front end locking portion 34K gets over the latch engagement piece 36T, and the latch engagement piece 36T slightly rotates counterclockwise, The latch 34 is locked to the tip locking portion 34K. As a result, the latch 34 is held in the locked position, and the pole 36 is also fixed so as not to rotate by being pressed against the latch 34. This mechanism is the “latch pole interlocking mechanism” according to the present invention.

  Further, as shown in FIG. 5, the pole engagement piece 34B is in contact with the proximal end of the latch engagement piece 36T, and the latch engagement piece 36T is in contact with the distal end of the latch 34 as shown in FIG. In the state of being locked to the locking portion 34K, the rotation posture of the pole 36 is the same, and the pole operated lever 36R extends obliquely rearward and downward. Here, the position of the pole 36 in a state where the tip of the pole engaging piece 34B is in contact with the base end of the latch engaging piece 36T corresponds to the “first position” of the present invention. The position of the pole 36 that is locked to the tip locking portion 34K of the latch 34 corresponds to the “second position” of the present invention.

  As shown in FIG. 4, a housing-like cover 40 is attached to the rear part of the sheet metal base 33. As shown in FIG. 2, the cover 40 is flat in the horizontal horizontal direction (left and right direction in FIG. 2), and has a width that can accommodate the rear end wall 33 </ b> A of the sheet metal base 33 just inside. Then, as shown in FIG. 5, locking protrusions 40T and 40T protruding inward from the upper surface wall and the lower surface wall of the cover 40 are formed in the cover locking hole 33E of the cover fixing portion 33D provided in the sheet metal base 33. The cover 40 is fixed to the sheet metal base 33 by being locked.

  As shown in FIG. 4, the cover 40 is provided with an arc-shaped portion 40A corresponding to the turning trajectory of the latch operation lever 34R, and the latch operation is performed through a slit 41 formed in the tip arc wall 40B of the arc-shaped portion 40A. The tip of the lever 34R is exposed to the outside of the cover 40. When the latch 34 is located at the unlocked position as shown in FIG. 5, the latch operating lever 34R is disposed at the lower end of the slit 41, and when the latch 34 is located at the locked position as shown in FIG. 34R is disposed at the upper end of the slit 41.

  Before assembling the cover 40 to the sheet metal base 33, a resin cap 45 is attached to the tip of the latch operation lever 34R. As shown in FIG. 5, a movable arc member 46 is integrally formed on the resin cap 45 so as to overlap the tip arc wall 40 </ b> B of the cover 40 from the inside. The movable arc member 46 extends in both the upper and lower directions of the resin cap 45 and always closes the entire slit 41 from the inside regardless of the rotation position of the latch operation lever 34R.

  A cylindrical body 47 is accommodated inside the lower end portion of the cover 40 in a state of extending in the front-rear direction. The rear end portion of the cylindrical body 47 is fixed to the wall portion of the cover 40, and the internal space of the cylindrical body 47 communicates through a hole formed through the wall portion. The front end portion of the cylindrical body 47 is abutted against the rear end wall 33A of the sheet metal base 33, and the internal space of the cylindrical body 47 is opened forward from the rear end wall 33A through the slit 33B. The pole operation member 42 is inserted into the cylindrical body 47.

  The pole operation member 42 has a structure in which a groove wall 42M is provided at the front end of the cylindrical rod. The groove wall 42M has a recess opened forward and upward, and the tip of the pole operated lever 36R in the pole 36 is accommodated in the recess. A flange 42F is provided at a position near the rear end of the pole operation member 42, and a coil spring 43 inserted through an intermediate portion of the pole operation member 42 is sandwiched between the flange 42F and the rear end wall 33A. The rear end portion of the pole operation member 42 has a smaller diameter than the intermediate portion of the pole operation member 42 and is exposed to the outside of the cover 40. Then, when the pole 36 and the latch 34 are engaged and become unable to rotate as shown in FIG. 8, by pressing the exposed portion of the pole operating member 42 from the cover 40, the pole 36 is By rotating, the engagement between the pole 36 and the latch 34 is released.

Next, the operation of the present embodiment configured as described above will be described.
In the state where the shoji 12 is opened, as shown in FIG. 5, the latch 34 is located at the unlocked position and the trigger 35 is located at the latch engaging position. Then, the latch locking arm 35K of the trigger 35 and the trigger engaging portion 34J of the latch 34 are engaged, whereby the rotation operation of the latch operation lever 34R is prohibited and held in the unlocked position of the latch 34. .

  In order to lock the locking device 20, the shoji 12 is closed, and then the latch operation lever 34R is rotated so as to be pulled upward. Specifically, when the shoji 12 is closed, the striker 63 passes through the striker engaging piece 34A and enters the striker receiving recess 33S of the sheet metal base 33 as shown in FIG. If the latch 34 is rotated immediately after the sheet metal base 33 enters the striker receiving recess 33S, the tip of the striker engagement piece 34A passes, for example, in sliding contact with the striker 63, and becomes "empty". obtain. Then, it can be misunderstood that the shoji 12 is locked because the latch operation lever 34R is moved to the upper end.

  However, according to the lock device 20 of the present embodiment, in a state immediately after the sheet metal base 33 enters the striker receiving recess 33S, the latch engagement arm 35K of the trigger 35 and the trigger engagement portion 34J of the latch 34 are engaged. Accordingly, since the rotation operation of the latch operation lever 34R is prohibited, the operator notices that the shoji 12 is in a half-open state. When the operation for closing the shoji 12 is further performed, as shown in FIG. 7, the striker 63 enters the engageable area where the latch 34 can be engaged, and the trigger contact portion 64 detects the shoji of the trigger 35. The arm 35T is pressed, and the trigger 35 rotates from the latch engagement position to the latch engagement release position. Thereby, the engagement between the latch locking arm 35K of the trigger 35 and the trigger engagement portion 34J of the latch 34 is released, and the rotation operation of the latch operation lever 34R is allowed.

  In this state, as shown in FIG. 8, when the latch operating lever 34R is rotated upward and the latch 34 is rotated from the unlocked position to the locked position, the striker engaging piece 34A causes the striker to engage with the striker. 63 is pulled toward the locking device 20 side. By this pulling action, the vertical rod 12T of the shoji 12 approaches the vertical frame member 11T of the window frame 11, and the belt-like elastic member 11D is crushed between the vertical rod 12T and the vertical frame member 11T as shown in FIG. It is. When the latch 34 reaches the locking position, as shown in FIG. 8, the pawl engaging piece 34B of the latch 34 and the latch engaging piece 36T of the pawl 36 are engaged, and the latch 34 is held in the locking position. . Thus, the locking operation of the locking device 20 is completed.

  On the other hand, in order to unlock the locking device 20, the pole operating member 42 may be pressed. Thereby, as shown in FIG. 9, the engagement between the pole engaging piece 34B of the latch 34 and the latch engaging piece 36T of the pole 36 is released. Then, the latch 34 is rotated toward the unlocked position by the elastic force of the coil spring 37, the latch 34 and the stopper ST1 come into contact with each other, and the latch 34 is positioned at the unlocked position. Thereby, the unlocking operation of the locking device 20 is completed. If the shoji 12 is opened in this state, the trigger contact portion 64 is separated from the trigger 35, and the trigger 35 is returned to the latch engagement position by the elastic force of the coil spring 38.

  As described above, according to the lock device 20 of the present embodiment, even if the shoji 12 is intended to be closed, if it is in the half-open state, the striker 63 does not enter the engageable region where the latch 34 can be engaged, and the trigger 35 is The latch 34 is held in an engaged state, and the rotation operation of the latch 34 from the unlocked position to the locked position is prohibited. When the shoji 12 is closed to the position where the striker 63 has entered the engageable region engageable with the latch 34, the engagement between the trigger 35 and the latch 34 is released, and the latch from the unlocked position to the locked position is released. The rotation operation of 34 is permitted and can be locked. Thereby, emptying is prevented, and the space between the shoji 12 and the window frame 11 can be reliably locked. Further, according to the lock device 20 of the present embodiment, the parts such as the latch 34, the trigger 35, and the pole 36 are arranged on one surface of the sheet metal base 33 on the opposite side to the inward wall portion 11A of the vertical frame member 11T. Therefore, as shown in FIG. 3, the latch 34 and the like are concealed by the sheet metal base 33 with respect to the external opening R1 (hereinafter referred to as “the shoji gap opening R1”) in the gap between the shoji 12 and the window frame 11. Thus, unauthorized unlocking can be prevented.

  By the way, when the lock device 20 is attached to the window sash 10 in which the shoji 12 rotates in the opposite direction to the window sash 10 described above, the attachment position of the lock device 20 in the window frame 11 is reversed right and left. Even in such a case, according to the lock device 20 of the present embodiment, the latch 34 and the like can be hidden by the sheet metal base 33 with respect to the shoji gap opening R1. That is, according to the locking device 20 of the present embodiment, three types of mounting holes 50A, 50B, 51A for the latch 34, the trigger 35, and the pole 36 are provided at two line symmetrical positions on the sheet metal base 33. Further, since the trigger 35, the latch 34, and the pole 36 are all in a flat plate structure, as shown in FIG. 10, the lock device 20 is symmetrical with respect to the predetermined vertical plane as shown in FIG. In this way, all the components of the lock device 20 can be rearranged. In other words, the locking device 20 having the left and right specifications can be configured with common parts, and the cost can be reduced.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

(1) Although the locking device 20 of the above embodiment is used for locking the shoji 12 with a vertically protruding structure, as shown in FIG. 11, the locking device 20 may be used for locking the shoji 12X with a sliding structure. Good. In this case, as shown in the figure, the lock device 20 may be attached to the shoji 12X, and the striker 63 may be provided on the frame 11X. Conversely, the lock device 20 may be attached to the frame 11X, and the striker 63 may be attached to the shoji 12X. Also good.

(2) Although not included in the technical scope of the present invention, using the principle of the present invention, when the shoji is closed, the latch is pushed by the striker to rotate from the unlocked position to the locked position. It may be. Specifically, as in the locking device 20X shown in FIGS. 12 and 13, a spring locking piece 34C is provided on the latch 34 to replace the latch operating lever 34R of the above embodiment, and this spring locking piece 34C A coil spring 37 is inserted between the pole 36 and the spring locking piece 36S. Then, as compared with the latch 34 of the first embodiment, the front edge portion of the pole engaging piece 34B is made closer to the striker engaging piece 34A side. With this configuration, when the shoji is closed, the striker 63 is received between the striker engagement piece 34A and the pole engagement piece 34B, and the striker 63 approaches the lock device 20 in this state, whereby the latch 34 is By rotating from the unlocked position to the locked position, and the pole 36 rotating and engaging with the latch 34, the gap between the shoji and the frame can be locked.

The perspective view of the sash of the vertical protrusion structure which concerns on embodiment to which this invention is applied Cross-sectional view of the vertical gutter and vertical frame member with the shoji screen open Cross-sectional view of the vertical fence and vertical frame member when the shoji is closed Perspective view of the locking device Side sectional view of the unlocking device Side sectional view of the unlocking device Side sectional view of the unlocking device Side sectional view of the locking device in the locked state Side sectional view of the locking device in the locked state Perspective view of a locking device with the left and right reversed. The front view of the shoji of the slide structure to which the locking device concerning the present invention was attached Sectional drawing of the unlocking state in the locking device using the principle of the present invention Sectional view of the locked state in the locking device

Explanation of symbols

11 Window frame (frame)
12, 12X Shoji 20, 20X Locking device 33 Sheet metal base 33C Base fixing part 34 Latch 34J Trigger engagement part 34R Latch operation lever (latch operation part)
35 Trigger 35T Shoji Detection Arm 36 Pole 36R Pole Operated Lever (Rotating Arm)
40 Cover 42 Pole operation member 45 Resin cap 46 Movable arc member 50A, 50B, 51A Mounting hole 63 Strike

Claims (10)

A locking device that is assembled to one of the shoji or one of the frames with the shoji inside, and is disposed opposite to the striker provided on the other, and a latch that can rotate between a locked position and an unlocked position, A latch operating portion for manually rotating the latch, and with the shoji being closed, the latch is rotated from the unlocked position to the locked position and engaged with the striker for locking. In the locking device
In the process of closing the shoji, the striker is engaged with the latch by engaging the latch with the shoji open and prohibiting the rotation of the latch from the unlocked position to the locked position. When entering the engageable region, the engagement with the latch is released by being pushed by the trigger abutting portion provided on the side with the striker of the shoji or the frame. And a trigger that allows the latch to rotate ,
Rotating between a first position that allows the latch to rotate from the unlocked position to the locked position and a second position that engages the latch at the locked position and fixes the latch With a great pole,
A latch pole interlock mechanism that rotates the pawl from the first position to the second position in conjunction with the latch pivoting from the unlocked position to the locked position;
A pawl operating portion for manually releasing the engagement between the latch and the pawl at the locked position;
The pawl operating portion is configured to be linearly movable, and a pivot arm is provided on the pawl to be rotated by being pushed by the pressed pawl operation portion, and the entire pawl is pivoted together with the pivot arm to latch the latch. A locking device characterized in that the engagement with is released. A locking device that is assembled to one of the shoji or one of the frames with the shoji inside, and is disposed opposite to the striker provided on the other, and a latch that can rotate between a locked position and an unlocked position, A latch operating portion for manually rotating the latch, and with the shoji being closed, the latch is rotated from the unlocked position to the locked position and engaged with the striker for locking. In the locking device
In the process of closing the shoji, the striker is engaged with the latch by engaging the latch with the shoji open and prohibiting the rotation of the latch from the unlocked position to the locked position. When entering the engageable region, the engagement with the latch is released by being pushed by the trigger abutting portion provided on the side with the striker of the shoji or the frame. And a trigger that allows the latch to rotate,
  Rotating between a first position that allows the latch to rotate from the unlocked position to the locked position and a second position that engages the latch at the locked position and fixes the latch With a great pole,
A latch pole interlock mechanism that rotates the pawl from the first position to the second position in conjunction with the latch pivoting from the unlocked position to the locked position;
A pawl operating portion for manually releasing the engagement between the latch and the pawl at the locked position;
The latch, the trigger, and the pole are rotatably assembled to one surface of a common sheet metal base, and each of the three attachment portions for the latch, the trigger, and the pole is attached to the sheet metal base. Are provided at two symmetrical positions, respectively, and the latch, the trigger, and the pawl can be assembled by selecting one of the two positions. A locking device that is assembled to one of the shoji or one of the frames with the shoji inside, and is disposed opposite to the striker provided on the other, and a latch that can rotate between a locked position and an unlocked position, A latch operating portion for manually rotating the latch, and with the shoji being closed, the latch is rotated from the unlocked position to the locked position and engaged with the striker for locking. In the locking device
In the process of closing the shoji, the striker is engaged with the latch by engaging the latch with the shoji open and prohibiting the rotation of the latch from the unlocked position to the locked position. When entering the engageable region, the engagement with the latch is released by being pushed by the trigger abutting portion provided on the side with the striker of the shoji or the frame. And a trigger that allows the latch to rotate,
Rotating between a first position that allows the latch to rotate from the unlocked position to the locked position and a second position that engages the latch at the locked position and fixes the latch With a great pole,
A latch pole interlock mechanism that rotates the pawl from the first position to the second position in conjunction with the latch pivoting from the unlocked position to the locked position;
A pawl operating portion for manually releasing the engagement between the latch and the pawl at the locked position;
The latch, the trigger, and the pole are rotatably assembled to one surface of a common sheet metal base, and are overlapped on a lock fixing surface provided on one of the shoji or the frame perpendicular to the one surface. A base fixing part to be fixed
The locking device according to claim 1, wherein the latch operation portion extends substantially parallel to the one surface from a rotation center of the latch so as to protrude from the lock fixing surface. The latch, the trigger, and the pole are rotatably assembled to one surface of a common sheet metal base, and each of the three attachment portions for the latch, the trigger, and the pole is attached to the sheet metal base. 2. The lock device according to claim 1, wherein the latch device, the trigger, and the pawl can be assembled by selecting one of the two positions, respectively. . The latch, the trigger, and the pole are rotatably assembled to one surface of a common sheet metal base, and are overlapped on a lock fixing surface provided on one of the shoji or the frame perpendicular to the one surface. A base fixing part to be fixed
  The said latch operation part was extended from the rotation center of the said latch substantially parallel to said one surface so that it might protrude from the said lock fixing surface, The claim of any one of Claim 1, 2, 4 characterized by the above-mentioned. The locking device according to item.   The sheet metal base is provided with a housing-like cover that covers the rotation region of the latch operation portion, and the cover is provided with an arc shape portion corresponding to the rotation locus of the latch operation portion. The locking device according to claim 3 or 5, wherein a front end portion of the latch operation portion is exposed to the outside of the cover through a slit formed in a front end arc wall of the portion. A movable arc member that is superimposed on the tip arc wall from the inside is fixed to the latch operation portion, and the movable arc member has a length that always closes the slit regardless of the rotation position of the latch operation portion. The locking device according to claim 6, wherein the locking device is formed. Provide a resin cap attached to the tip of the latch operation part,
  8. The locking device according to claim 7, wherein the movable arc member is integrally formed at a base end portion of the resin cap. The lock according to any one of claims 6 to 8, wherein a side of the pole operation part is covered with the cover, and a tip part of the pole operation part is exposed to the outside from the cover. apparatus. 10. The latch according to claim 1, wherein the latch is configured to pull the striker in the engageable area toward the locking device in the process of rotating from the unlocked position to the locked position. The locking device according to any one of claims.

Images