JP2007070908A - Lock device and window equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device and a double sliding window equipped with the lock device having excellent operability and security without impairing the design of the window. <P>SOLUTION: The lock device comprises an operating member 51 provided in a slidingly operable manner to a meeting stile 23a of an inner sash 4; a lock body 75 provided inside the meeting stile 23a of the inner sash 4 and interlocked with the sliding operation of the operating member 51 to perform locking and unlocking operation to the meeting stile 23b of the outer sash 3; and a lock receiving member 55 provided at the meeting stile 23b of the outer sash 3 and engaged with the lock body 75 put in locking operation. The operating member 51 is formed in approximately the same length as the meeting stile 23a of the inner sash 4 and provided along the meeting stile 23a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a locking device used for locking a sliding window, a sliding window, or the like instead of a crescent, and a window having the same.

Conventionally, a crescent is mainly used as this type of locking device, and the crescent is provided on the inner surface of the scissors-shaped latch provided on the outer surface of the sumoscope and the outer surface of the handbag. (See Patent Document 1). As a result, both the inner and outer shojis are locked by rotating the latch lever and engaging the latch.
Japanese Patent Laid-Open No. 10-331501

  However, in such a locking device, the locking device protrudes from the summon bowl. In this state, the lock device is visually recognized through the glass of the shoji, and the lock state and structure of the lock device are known, which is not preferable for crime prevention. Moreover, the lock device which protrudes from the summon bowl is unpreferable in terms of design with respect to the design of the window constituted by vertical and horizontal lines. Furthermore, since the lock device is considered to be operated by adults and is placed at a position that is out of the reach of children, it does not have operability for everyone.

  Therefore, an object of the present invention is to provide a lock device with excellent operability and high security, and a window provided with the same without impairing the design of the window.

  At least one of the indoor-side first summoning unit or the outdoor-side second summoning unit is a shoji summoning unit, and the indoor-side first summoning unit and the outdoor-side second summoning unit In a locking device configured to be able to lock and unlock the shoji from the indoor side in a closed state of the shoji that overlaps with the summoning portion in the prospective direction, an operation member provided slidably with respect to the first summing portion Provided in the first summing unit, and is provided in the second summing unit, and a lock body that locks and unlocks the second summing unit in conjunction with the sliding operation of the operation member. A lock receiving portion that engages with the lock main body, and the operation member is formed to have substantially the same length as the first summing portion and is provided along therewith. .

  According to this configuration, since the lock body is built in the first summing unit and the operation member is attached to the first summing unit, it can be configured integrally with the first summing unit. In addition, it is difficult to determine the locked state for visual recognition from the outside, and it is also difficult to determine the presence of the lock device itself. That is, since the position and structure of the lock device itself cannot be determined from the appearance, it is possible to achieve high crime prevention. In addition, since the operation member and the first summoning section are formed to have the same length, a sense of unity in design can be obtained, and the operation member can be operated at an arbitrary height to lock the lock body. And unlocking operation can be performed. That is, it corresponds to universal design.

  In this case, it is preferable that the operation member is attached to the first summing unit so as to be slidable in the vertical direction.

  According to this configuration, the locking and unlocking operations of the lock body can be easily performed only by sliding the operation member in the vertical direction.

  In this case, the lock body is configured to be movable back and forth between a locking position that engages with the lock receiving portion and an unlocking position that releases the engagement, and the operation member slides between the operation member and the lock body. It is preferable that a conversion mechanism for converting the movement into the advance / retreat operation of the lock body is provided.

  According to this configuration, the sliding movement of the operating member in the vertical direction can be converted into the forward / backward movement of the lock body in the inside / outside direction, and the structure can be simplified by simplifying the locking / unlocking operation of the lock body. It can be simplified. At the same time, the structure of the lock receiving portion can be simplified.

  In this case, the conversion mechanism is constituted by a linear motion cam, and the linear motion cam is connected to the cam inclined surface for moving the lock body forward and backward, and a pair of flat surfaces that are connected to both ends of the cam inclined surface and maintain the forward and backward positions of the lock body. It is preferable to have a surface.

  According to this configuration, the sliding movement of the operating member in the vertical direction can be converted into the forward / backward movement of the lock body in the inward / outward direction by the cam slope, and the lock body is positioned by the pair of flat surfaces. It can be stably held in the position and the unlocked position. If the cam slope is formed so that the downward operation of the operation member is in the locking direction of the lock body, there is no problem such as the lock body being unlocked by vibration or the like.

  On the other hand, it is preferable that the operation member is attached to the first summing portion so as to be slidable inward and outward.

  According to this configuration, the locking and unlocking operations of the lock body can be easily performed by simply sliding the operation member inward and outward.

  In this case, it is preferable that the first summing unit is provided with a click mechanism that click-engages with the operation member at both slide end positions in the inner and outer directions.

  According to this configuration, when the operating member is click-engaged with the first summoning section, locking and unlocking can be experienced and an operation error can be prevented.

  In these cases, there is further provided an interlock mechanism that prevents the locking operation of the lock body when the shoji is opened and permits the locking operation of the lock body when the shoji is closed, and the interlock mechanism is provided inside the first summing unit. A trigger member that protrudes from the first summing portion when opened and is retracted by the second summing portion when closed, and a spring that biases the trigger member in the projecting direction. A blocking position in which the base end protrudes from the first summing portion and faces the movement trajectory of the lock body to prevent the locking operation of the lock body, and the distal end is immersed from the first summing portion and the base end is locked. It is preferable that the main body is configured so as to be able to advance and retreat obliquely with respect to the movement trajectory between the main body and the allowable position that allows the locking operation of the lock main body.

  If the lock body protrudes (locked state), the protruding portion of the lock body may collide with the second summing portion, possibly damaging the lock body or the second summing portion, and further the shoji. According to this configuration, the interlock mechanism prevents the lock body from being locked when the shoji is opened, so that it is possible to effectively prevent damage to the lock body, the second summoning portion, etc. Since the trigger member advances obliquely, the interlock mechanism can be configured with a simple structure.

  The window of the present invention includes the above-described locking device, a shoji, and a window frame that supports the shoji so that it can be opened and closed.

  According to this configuration, it is possible to provide a single-drawing or sliding window with high crime prevention, good operability, and excellent design.

  As described above, according to the present invention, by attaching the operation member of the lock device to the same length as that of the first summoning unit, it is possible to achieve a good design and high crime prevention, In terms of operability, the universal design can be considered.

  Hereinafter, a sliding window to which a locking device according to an embodiment of the present invention is applied will be described with reference to the accompanying drawings. As shown in the figure of FIG. 1, the sliding window 1 is configured by incorporating, into a window frame 2, an external shoji 3 provided on the outdoor side and an internal shoji 4 provided on the indoor side, Both shojis 3 and 4 are opened and closed in a sliding manner. Moreover, the screen door 5 is attached to the outdoor side of the external shoji 3 so as to be able to be opened and closed so as to overlap inward and outward (see FIG. 2). In the figure, the sliding window 1 is viewed from the indoor side, and the left half is the outer shoji 3 and the right half is the inner shoji 4.

  The window frame 2 is configured by a four-frame structure with an upper frame 10, a lower frame 11, and left and right vertical frames 12, 13, and each component frame material of the window frame 2 is an extruded aluminum material or the like. It consists of

  The inner shoji 4 and the outer shoji 3 are both framed by the upper eaves 20a, 20b, the lower eaves 21a, 21b, the door end eaves 22a, 22b, and the summoning eaves 23a, 23b. 24 is built in. In the following, the summon bowl 23a of the inner shoji 4 is referred to as “inner summon bowl (first summoning portion) 23a”, and the summon bowl 23b of the outer shoji 3 is referred to as “outer summon bowl (second summon). Part) 23b ". Both the shojis 3 and 4 are configured to be openable and closable in a sliding manner. Between the inner and outer summoning cages 23a and 23b of both shojis 3 and 4, the obstructed inner shoji 4 and the outer shoji 3 are A locking device 50 for locking is incorporated.

  As shown in FIGS. 3 to 5, the inner summoning bowl 23a has a rectangular hollow inner summing bowl main body 36a, and an inner summoning bowl main body 36a extending from the inner summing bowl main body 36a in the direction of finding and attached with the double glazing 24. A recessed groove portion 35a, an inner summit bowl main body 36a, a lock housing portion 37 having a substantially “C” -shaped cross section projecting indoors from the recessed groove portion 35a, and an inner side protruding from the inner summit bowl main body 36a The smoke return 42 is integrally formed. Although details will be described later, the inner summon basket main body 36 a and the lock housing portion 37 accommodate the lock assembly 53, the linear motion cam 52, and the interlock mechanism 54 of the lock device 50. The operation member 51 of the lock device 50 is attached. Moreover, the front opening part of the lock | rock accommodating part 37 is comprised by the left-right paired bending piece 43, and this bending piece 43 and the operation member 51 mentioned later engage.

  Similarly, the outer summoning bowl 23b includes a rectangular hollow outer summing bowl main body 36b, a scooping groove 35b extending from the outer summing bowl main body 36b to the inside in the direction of finding and mounting the double glazing 24, and the outer summoning bowl 23b. It is integrally formed with an outside smoke return 44 protruding on the indoor side of the mating tub main body 36b. Although details will be described later, the lock receiving member 55 of the lock device 50 is incorporated in the outer summoning bowl main body 36b. Further, the outer smoke return 44 is provided with a contact plate 45 that is in sliding contact with a trigger member 101 of an interlock mechanism 54 described later.

  Here, with reference to FIG. 3 thru | or FIG. 5, the locking device 50 of this embodiment is demonstrated in detail. The lock device 50 includes an operation member 51 that is slidably engaged with an indoor side end of the lock housing portion 37 of the inner shroud 4, a linear motion cam 52 fixed to the back surface of the operation member 51, and the lock housing portion 37. The lock assembly 53 built in the inner summon bowl main body 36a, the interlock mechanism 54 fixed to the outdoor side wall of the inner summon bowl main body 36a, and the indoor side wall of the outer summon bowl main body 36b of the external shoji 3 And a lock receiving member 55 to be fixed.

  The operation member 51 is substantially the same length as the inner summit rod 23a, is made of an extruded shape such as aluminum, and has a rectangular hollow portion 59 formed in the same width as the inner summit rod 23a, and protrudes from the back surface thereof. And a pair of slide engaging portions 60, 60. The hollow portion 59 has the same color and the same texture, and the design is unified, and longitudinal grooves for preventing slipping are formed on the left and right side surfaces. For this reason, at the time of operation, a slide operation is performed using the longitudinal groove as a clue. On the back surface of the hollow portion 59, a pair of inverted “T” -shaped slide engaging portions 60 extending in the vertical direction are provided in parallel to each other. The slide engaging portion 60 is slidably engaged with the bent piece 43 of the lock housing portion 37 in the inner summoning bowl 23a, so that the operation member 51 can be slid in the vertical direction. The inner summon bowl 23a and the operation member 51 are arranged so that their vertical positions are aligned in the locked state.

  The linear motion cam 52 is integrally formed by a base plate 66 screwed to the back surface of the operation member 51 in a state where the linear motion cam 52 is inserted between the pair of slide engaging portions 60 from a small opening, and a cam main body 65 supported by the base plate 66. Yes. The cam body 65 includes a cam slope 67 formed on a slope that descends from top to bottom, a lower flat face 68 that continues to the lower side of the cam slope 67, an upper flat face 69 that continues to the upper side of the cam slope 67, and an upper flatness. It has an upper locking stopper 70 provided in a state protruding from the surface 69 and a lower locking stopper 71 provided in a state protruding from the lower flat surface 68. In this case, the cam slope 67 locks and unlocks (advances and retracts) a lock body 75 described later, the upper flat surface 69 maintains the lock body 75 in the locked position, and the lower flat surface 68 moves the lock body 75 to the unlocked position. maintain. That is, when the lock body 75 is slidably contacted with the linear motion cam 52, the linear motion cam 52 constitutes a cam mechanism (conversion mechanism) that converts the vertical movement by the operation member 51 into the forward / backward movement by the lock body 75. Yes.

  The lock assembly 53 is accommodated from the lock accommodating portion 37 to the inner summoning tub main body 36a, and is screwed to a partition wall between the lock accommodating portion 37 and the inner summoning moth main body 36a. The lock assembly 53 is built in between the lock housing portion 37 and the inner summon bowl main body 36a, and protrudes and protrudes from the outdoor side wall of the inner summon bowl main body 36a, and locks and unlocks the lock main body 75. A guide member 76 that guides inward and outward, and a coil spring 77 that urges the lock body 75 indoors (unlocking direction) are provided. Each part of the lock body 75 is formed in a square cross section, and includes a lock head 80 that is slidably in contact with the linear motion cam 52, a lock body 81 that is formed in an elongated shape connected to the lock head 80, and a distal end of the lock body 81. A locking portion 82 (see FIG. 3) formed so as to protrude from the right half is integrally formed. Although details will be described later, the left half of the front end of the lock barrel 81 constitutes a trigger receiving portion 83 that abuts against the trigger member 101 of the interlock mechanism 54.

  The guide member 76 is formed with a guide main portion 86 screwed to a partition wall between the lock housing portion 37 and the inner summoning bowl main body 36a, and slightly protrudes indoors with respect to the guide main portion 86. A locking position restricting portion 87 that restricts the position of the locking stopper 70 is integrally formed. The guide member 76 has a guide hole 89 that penetrates the guide main portion 86 and the locking position restricting portion 87 in the inner and outer directions, and a head that is provided on the indoor side of the guide hole 89 and accommodates the lock head 80. A portion receiving hole 90 and a spring receiving hole 91 provided between the guide hole 89 and the head receiving hole 90 for receiving the coil spring 77.

  The guide hole 89 is formed in a square cross section in accordance with the lock body 81 of the lock body 75, and holds the lock body 75 so as to be able to advance and retract. The spring receiving hole 91 is formed in a hole that is slightly larger than the guide hole 89, and one end of the coil spring 77 that is a compression spring is brought into contact with the bottom portion 92, and the other end of the coil spring 77 is brought into contact with the back surface of the lock head 80. The lock body 75 is urged indoors. The head receiving hole 90 is formed to be slightly larger than the spring receiving hole 91 and is configured to be able to receive the lock head 80 in a locked state (advanced state).

  The lock receiving member 55 that receives the lock body 75 includes a thin plate-like lock receiving plate 93 that is screwed to the indoor side wall of the outside summit bowl 23 b, and a locking portion 82 of the lock body 75 that is provided in the center of the lock receiving plate 93. A plate opening 94 serving as a receiver and a receiving protrusion 95 provided on the back surface of the lock receiving plate 93 and extending in the vertical direction. On the other hand, on the indoor side wall of the outside summit bowl 23b, a receiving opening continuous with the plate opening 94 is formed and a slit opening continuous with the receiving opening is formed (both not shown). When the receiving protrusion 95 is inserted into the slit opening, the lock receiving member 55 is mounted so that the plate opening 94 matches the receiving opening.

  In such a configuration, when the locking operation is performed by lowering the operation member 51 and performing a sliding operation from the unlocked position to the locked position, the lock head of the lock body 75 that is in pressure contact with the lower flat surface 68 in the unlocked position. 80 is pushed outward by the cam slope 67 of the linear cam 52. Thereafter, when the operation member 51 is lowered to the locking position, the lock head 80 is pressed against the upper flat surface 69 of the linear cam 52 and is received in the head receiving hole 90 of the guide member 76. At the same time, the upper locking stopper 70 of the linear cam 52 contacts the locking position restricting portion 87 of the guide member 76. At that time, the locking portion 82 of the lock body 75 enters the plate opening 94 of the lock receiving member 55 to lock the inner summing bar 23a and the outer summing bar 23b. At this time, the inner summon bowl 23a and the operation member 51 are locked in a state where they are aligned vertically.

  On the other hand, when performing the unlocking operation, by raising the operation member 51 from the locking position, the lock head 80 is returned to the indoor direction by the coil spring 77 along the cam inclined surface 67, and the plate opening 94 of the lock receiving member 55. The locking part 82 is pulled out from the above. Thereafter, the unlocking operation is completed by bringing the locking head 80 into contact with the lower locking stopper 71.

  The interlock mechanism 54 includes a thin plate-like covering plate 100 screwed to the outdoor side wall of the inner summon bowl main body 36 a, a pair of upper and lower trigger support portions 106 provided on the back surface of the covering plate 100, and a trigger support portion 106. The trigger member 101 is formed so as to be able to move forward and backward inside and has a bullet shape in cross section, and a spring (not shown) that biases the trigger member 101 in the protruding direction.

  The cover plate 100 is formed with a lock opening 104 provided on the left side of the figure through which the locking portion 82 enters and exits, and a trigger opening 105 provided side by side with the lock opening 104 and through which the trigger member 101 enters and exits (see FIG. 5). . Both trigger support portions 106 are formed in a pair vertically on the indoor side with respect to the trigger opening 105, and each trigger support portion 106 has two guide slits 107 for holding the trigger member 101 movably forward and backward. It is formed obliquely from the rear toward the front right (see FIG. 3). Two pins 108 corresponding to the guide slits 107 are formed on the upper and lower surfaces of the trigger member 101, and the trigger support unit 106 allows the trigger member 101 to be engaged with the pins 108 and the guide slits 107. Hold to move forward and backward at an angle. The spring urges the trigger member 101 in the protruding direction. The trigger member 101 moves backward by being pushed up by the contact plate 45 provided in the outer smoke return 44.

  When the sliding window 1 is opened, the trigger member 101 is biased by a spring (not shown) and protrudes. In this state, when the lock body 75 tries to advance in the outdoor direction, the tip of the trigger receiving portion 83 of the lock body 75 hits the tail end of the trigger member 101 and prevents the lock body 75 from moving forward. On the other hand, when the sliding window 1 is closed, the abutting plate 45 provided on the outer smoke return 44 is pressed against the tip of the trigger member 101, and the trigger member 101 moves backward diagonally to the left in the figure. In this state, when the lock main body 75 performs the locking operation, there is nothing to be abutted against the tip of the trigger receiving portion 83 of the lock main body 75, so that the lock main body 75 is allowed to advance to the outdoor side, and the locking operation is performed. Made. That is, when the sliding window 1 is opened, even if the operation member 51 is operated, the trigger member 101 prevents the locking operation of the lock body 75, so that the sliding window 1 cannot be locked. Thereby, when the sliding window 1 is opened, it is possible to prevent malfunction such as the lock body 75 popping out and damaging the lock body 75 itself, the outside summoning tub 23b, or the shoji 3 itself.

  According to the above configuration, the inner summoning bowl 23a and the operation member 51 can have an integrated configuration. That is, since the locking device 50 is built in the two summoning tubs 23ab, leaving only the operation member 51, even if the locking device 50 is viewed through the glass, only the operation member 51 can be seen in appearance. For this reason, not only is it difficult to determine the locking state of the locking device 50, but also the structure of the locking device 50 is difficult to understand, so that the crime prevention property can be improved. In addition, by placing the locking device 50 in the two summoning jars 23a and 23b, the lines of each jar can be clearly shown without providing a protruding portion, so that the design is also excellent. Can do. In other words, it is possible to have unity as a design. Furthermore, when operating the operation member 51, the operation member 51 and the inner summoning bowl 23a are formed to have the same length, so that the operation position of the operation member 51 is not limited and can be operated in a wide range. If it is within the range of the inner summon bowl 23a, it can be operated at a desired position. Thereby, it can be made easy to operate for everyone.

  Next, a second embodiment according to the present invention will be described with reference to FIG. In the following description, only different points will be described in order to avoid redundant description. The locking device 110 operates the operation member 111 in the inner and outer directions to perform locking and unlocking operations.

  The lock housing portion 116 of the inner summon bowl 115 is formed in a cross-sectional “C” shape, and has a narrow width portion 119 formed in a narrow left and right width connected to the inner summon bowl main body 117 and the insertion groove portion 118. It has a wide portion 120 that is continuously formed to be wide on the left and right.

  The lock device 110 includes an operation member 111 that covers the inner summon bowl 115, a lock body 125 formed in a flat-head pin shape, a guide member 126 that guides the lock body 125 and is accommodated in the lock accommodation portion 116, and an operation member. 111, and a click mechanism 127 that engages with both inner surfaces of 111.

  The operation member 111 that covers the inner summon bowl 115 is formed to have the same length as the inner summit bowl 115, and the member main body 130 formed in a cross-sectional “C” shape, and the rear opening of the member main body 130. A bent piece 131, a first click engaging groove 132 provided on the inner wall surface of the member main body 130 and continuous with the bent piece 131, a second click engaging groove 134 connected to the first click engaging groove 132, And a pair of left and right locking stoppers 135 provided so as to protrude from the inner wall surface, and a head housing portion that is provided on the inner wall surface on the indoor side and accommodates a lock head 140 of a lock body 125 described later. 136.

  Each part of the lock main body 125 is formed in a square cross section, and is composed of a lock head 140 and a rod-shaped lock body 141 connected thereto. The lock head 140 is housed and fixed in the head housing portion 136 of the operation member 111, and the lock body 125 also moves inward and outward according to the operation of the operation member 111. The guide member 126 has a guide hole 142 into which the lock body 141 is inserted, and guides the lock main body 125 inward and outward. The click mechanism is 127, for example, a case fixed to the guide member 126, two steel balls that can be inserted and retracted at both ends of the case in a retaining state, and a spring that simultaneously biases the two steel balls outward, (Both are not shown). When the operation member 111 is operated to the locking position, the click mechanism 127 is engaged with the second click engagement groove 134 (FIG. 11A), and when the operation mechanism 111 is operated to the unlocking position, the click mechanism is 127. The steel ball engages with the first click engagement groove 132 (FIG. 5B).

  Thus, the sliding window 1 can be locked and unlocked with a click feeling, and the lock body 125 can be stably positioned at the locked position and the unlocked position. Similarly to the first embodiment, in the second embodiment, the inner summon bowl 115 and the operation member 111 can be integrated, so that the design is good and the operability is excellent and the crime prevention is high. Can be.

  The operation member may be a single member, and a plurality of lock bodies may be provided in the vertical direction, or the operation members may be provided corresponding to the plurality of lock bodies. Further, the conversion mechanism described above can be configured by a link mechanism (for example, an “L” character link) or the like. Furthermore, in the first embodiment, the upper and lower sides of the operation member are concealed with a cover or the like, or in the second embodiment, the narrow portion of the inner summon bowl exposed by the slide of the operation member may be concealed with a cover or the like. Is possible. Furthermore, the structure which attaches an operation member to the side surface (one side or both sides) of an internal summon bowl may be sufficient.

It is a figure of the sliding window to which the lock device concerning one embodiment of the present invention is applied. It is a cross-sectional view of a sliding window. (A) is a cross-sectional view around the lock device in the unlocked state, and (b) is a cross-sectional view around the lock device in the locked state. (A) is a longitudinal sectional view around the locking device in the unlocked state, and (b) is a longitudinal sectional view around the locking device in the locked state. It is a perspective view around a locking device. (A) is a cross-sectional view around the lock device in the locked state according to the second embodiment, and (b) is a cross-sectional view around the lock device in the unlocked state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sliding window 2 ... Window frame 3 ... External shoji 4 ... Internal shoji 23a ... Inner summoning bowl 23b ... Outer summoning bowl 50 ... Locking device 51 ... Operation member 52 ... Direct acting cam 54 ... Interlock mechanism 55 ... Lock Receiving member 67 ... Cam slope 68 ... Lower flat surface 69 ... Upper flat surface 75 ... Lock body 101 ... Trigger member

Claims (8)

At least one of the indoor-side first summing unit or the outdoor-side second summoning unit is a shoji summoning unit, and the indoor-side first summing unit and the outdoor-side summoning unit In the locked state of the shoji that is overlapped in the prospective direction with the summoning section of 2, the shoji configured to be able to lock and unlock the shoji from the indoor side,
An operation member provided slidably with respect to the first summoning unit;
A lock body which is provided inside the first summoning unit and which operates to lock and unlock the second summing unit in conjunction with a sliding operation of the operation member;
A lock receiving portion that is provided in the second summoning portion and engages with the lock body that has been locked;
The locking device is characterized in that the operation member is formed to have substantially the same length as the first summing unit and is attached thereto.   The locking device according to claim 1, wherein the operation member is attached to the first summing unit so as to be slidable in the vertical direction. The lock body is configured to be movable back and forth between a locking position that engages with a lock receiving portion and an unlocking position that releases the engagement,
The lock device according to claim 2, wherein a conversion mechanism that converts a sliding operation of the operation member into an advance / retreat operation of the lock body is interposed between the operation member and the lock body. . The conversion mechanism is composed of a linear cam,
The linear motion cam has a cam slope that allows the lock body to move forward and backward, and a pair of flat surfaces that are connected to both ends of the cam slope and maintain the forward and backward positions of the lock body. The locking device according to claim 3, wherein   The locking device according to claim 1, wherein the operation member is attached to the first summing unit so as to be slidable inward and outward.   6. The locking device according to claim 5, wherein the first summing unit is provided with a click mechanism that clicks and engages with the operation member at both slide end positions in the inner and outer directions. An interlock mechanism that prevents the locking operation of the lock body when the shoji is opened and allows the locking operation of the lock body when closed;
The interlock mechanism is provided inside the first summing unit, protrudes from the first summing unit when the door is opened, and is inserted into the second summing unit when closed, and the trigger member A spring for urging the member in the protruding direction,
The trigger member has a blocking position in which a distal end protrudes from the first summing portion and a proximal end faces the movement trajectory of the lock main body to prevent the locking operation of the lock main body, and the distal end is the first portion. It is configured to be able to advance and retreat obliquely with respect to the movement trajectory with respect to an allowable position where the base end portion is deviated from the movement trajectory of the lock body and the locking operation of the lock body is permitted. The locking device according to any one of claims 1 to 6, wherein: A locking device according to any of claims 1 to 7,
The shoji,
And a window frame that supports the shoji so that it can be opened and closed.

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