Latch device and fitting

Abstract

To adjust an operating force when opening / closing a sliding sash without increasing the size of the external dimensions.SOLUTION: A latch device 27 which includes a roller 37 that is provided on a vertical frame 11 of a frame body 10 and a receiving member 40 that is provided on a vertical stile 24 of a sliding sash 20 and that 40 is provided with an engagement protrusion 43 capable of being brought into contact with the roller 37 in response to an opening / closing of a sliding sash 20; and which restricts the movement of the sliding sash 20 with respect to the frame body 10 in the opening direction when the sliding sash 20 is closed by the roller 37 overcoming and contacting the engagement protrusion 43 of the receiving member 40; and in which the engagement protrusion 43 has a length that allows the path of passage of the roller 37 to be changed and is configured in an inclined shape with a continuously varying protruding height in the length direction.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a latch device for a fitting that restricts the movement of a shoji screen in the opening direction with respect to a frame body, and a fitting.

Background Art

[0002] As this type of latch device, there is one in which a roller latch is provided on the vertical stile of a shoji screen and a vertical stile latch receiver is provided on the frame body. The roller latch is configured to include a roller movably supported with respect to a case, and a spring interposed between the case and the roller and pressing the roller in a protruding direction. In this latch device, when the shoji screen is closed, the roller of the roller latch is pressed against the recess of the latch receiver by the spring, and the movement of the shoji screen in the opening direction with respect to the frame body is restricted (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the above-described latch device, a spring receiver that supports a spring is disposed movably with respect to a case, and an adjustment bolt is disposed between the spring receiver and the case. In this latch device, when the distance between the spring receiver and the case is changed by operating the adjustment bolt, the pressing force of the pressing member by the spring changes, so that the operating force when opening and closing the shoji screen can be adjusted. However, as a case for housing the spring receiver and the adjustment bolt, there is a concern that the outer dimensions will increase, and it will be difficult to attach it to a fitting having a small found dimension, such as a vertical frame or a vertical stile.

[0005] In view of the above circumstances, an object of the present invention is to provide a latch device and a fitting that can suppress an increase in outer dimensions and adjust the operating force when opening and closing a shoji screen.

Means for Solving the Problems

[0006] To achieve the above object, a latch device according to the present invention includes a pressing member provided on either the frame body or the shoji screen, and a receiving member provided on the other. The receiving member is provided with an engaging protrusion that can come into contact with the pressing member as the shoji screen is opened and closed. When the shoji screen is closed, after the pressing member gets over the engaging protrusion of the receiving member, it comes into contact with the engaging protrusion to restrict the movement of the shoji screen in the opening direction with respect to the frame body. The latch device for fittings is characterized in that the engaging protrusion has a length that allows the passing path of the pressing member to be changed, and is configured in an inclined shape in which the protruding height continuously changes in the length direction. , at least one of the pressing member and the receiving member is attached by screwing an attachment screw into either the frame body or the shoji through a mounting hole having an elongated hole shape along the length direction of the engaging protrusion It is characterized by the above.

[0007] Further, a latch device according to the present invention includes a pressing member provided on either the frame body or the shoji screen, and a receiving member provided on the other. The receiving member is provided with an engaging protrusion that can come into contact with the pressing member as the shoji screen is opened and closed. When the shoji screen is closed, after the pressing member gets over the engaging protrusion of the receiving member, it comes into contact with the engaging protrusion to restrict the movement of the shoji screen in the opening direction with respect to the frame body. The latch device for fittings is characterized in that the engaging protrusion has a length that allows the passing path of the pressing member to be changed, and is configured in a stepped shape in which the protruding height changes stepwise in the length direction. , at least one of the pressing member and the receiving member is attached by screwing an attachment screw into either the frame body or the shoji through a mounting hole having an elongated hole shape along the length direction of the engaging protrusion It is characterized by the above.

Effects of the Invention

[0008] According to the present invention, it is possible to adjust the operating force when opening and closing the shoji screen by changing the passing path of the pressing member with respect to the engaging protrusion, and there is no need to provide an adjustment mechanism for the pressing member. Therefore, it is possible to suppress an increase in outer dimensions, and there are advantages such as being able to attach it to fittings with small found dimensions as vertical frames or vertical muntins.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0010] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the latch device and the fitting according to the present invention will be described in detail. For convenience, the terms "prospective direction" and "search direction" may be used hereinafter. The prospective direction is the direction along the depth of the fitting, as indicated by arrow A in the figure. A surface along the prospective direction may be referred to as a prospective surface. The search direction is the direction along the vertical direction perpendicular to the prospective direction in the case of an object extending along the horizontal direction such as an upper frame, etc. In the case of an object extending along the vertical direction such as a vertical frame, etc., the search direction is the direction along the horizontal direction perpendicular to the prospective direction. A surface along the search direction may be referred to as a search surface.

[0011] Figs. 1 and 2 show a fitting which is an embodiment of the present invention. The fitting exemplified here is a single-opening door, and includes a frame body 10 and a shoji 20. The frame body 10 is configured by providing an upper frame 12 between the upper end portions of the left and right vertical frames 11. The shoji 20 is configured by attaching an upper frame 22, a lower frame 23, and left and right vertical frames 24 around the periphery of a panel 21 such as a rectangular glass plate. This shoji 20 is supported by the frame body 10 by a hinge 1 provided between one vertical frame 24 and one vertical frame 11 of the frame body 10, and can open and close the opening of the frame body 10 by rotating around a hinge axis along the vertical direction. Although not explicitly shown in the figure, in this fitting, by appropriately changing the attachment position of the hinge 1, it is possible to adjust the gap between the vertical frame 11 of the frame body 10 and the vertical frame 24 of the shoji 20. Handles 25 are attached to both sides of the portion of the panel 21 that is the door tip. The vertical frame 11, the upper frame 12 that constitute the frame body 10, the upper frame 22, the lower frame 23, and the vertical frame 24 that constitute the shoji 20 are extruded profiles formed of a metal such as an aluminum alloy, and are configured such that the portions along the entire length along the longitudinal direction have substantially the same cross-sectional shape. Hereinafter, the configuration of the vertical frame 11 of the frame body 10 and the vertical frame 24 of the shoji 20 will be described in detail, and the characteristic parts of the present application will be described together. For convenience, hereinafter, it will be described on the assumption that the above-described fitting is provided at a position partitioning between room a and room b, and is configured to protrude toward the b-room side when the shoji 20 is opened.

[0012] The vertical frame 11 of the frame body 10 has a symmetric shape on the left and right, and the frame main body part 11a and the locating wall part 11b are integrally formed. The frame main body part 11a has a hollow cylindrical shape with a substantially rectangular cross-section. The locating wall part 11b protrudes inward along the locating direction from the corner on the a-chamber side on the inner peripheral side of the frame body 10. The protruding dimension of the locating wall part 11b is set so that when the shoji 20 is closed, the inner peripheral edge faces the locating surface facing the a-chamber of the vertical frame 24. A seal member 11c for ensuring airtightness between the shoji 20 is attached over substantially the entire length of the vertical frame 11 at the part of the protruding edge of the locating wall part 11b facing the b-chamber.

[0013] The vertical frame 24 of the shoji 20 has a symmetric shape on the left and right, and the frame main body parts 24a, two panel holding pieces 24b, and two cover holding pieces 24c are integrally formed. The frame main body part 24a has a hollow cylindrical shape with a substantially rectangular shape. In the illustrated example, a vertical frame 24 having a frame main body part 24a with a dimension in the locating direction smaller (substantially 1 / 4) than the dimension in the prospective direction is applied. The panel holding pieces 24b protrude inward along the locating direction from the prospective surface on the inner peripheral side of the frame main body part 24a, and hold the panel 21 between them. The cover holding pieces 24c protrude outward from both side edges on the outer peripheral side of the frame main body part 24a in a direction gradually approaching each other, and detachably hold the cover member 26 between them. The cover member 26 is an extruded profile formed of a metal such as an aluminum alloy like the vertical frame 24, and is formed to have substantially the same longitudinal dimension as the vertical frame 24.

[0014] A latch device 27 is provided between the vertical frame 11 and the vertical frame 24 configured as described above, between the parts on the door tip side. The latch device 27 is for restricting the movement of the shoji 20 in the opening direction with respect to the frame body 10, and includes a roller latch 30 provided on the vertical frame 11 and a receiving member 40 provided on the vertical frame 24.

[0015] As shown in FIGS. 2 and 3, the roller latch 30 is configured to include a case 31, a support bracket 32, a compression spring 33, and a cover plate 34. The case 31 has a rectangular parallelepiped shape with one side open. On the inner bottom surface of the case 31, a spring seat 31a is provided so as to protrude. At portions on both sides of the opening in the case 31, flanges 35 extend in directions away from each other. The flanges 35 are provided so as to be located on the same plane, and each has a screw hole 35a at its respective extending end. The support bracket 32 has a size that can be accommodated inside the case 31, and a support shaft 36 is provided between opposing support plate portions 32a. The support shaft 36 extends along the vertical direction and rotatably supports a roller (pressing member) 37 about its axis. At a portion of the support bracket 32 corresponding to the spring seat 31a of the case 31, a spring abutment seat 32b is provided so as to protrude. The compression spring 33 is a coil spring that is interposed between the spring seat 31a of the case 31 and the spring abutment seat 32b of the support bracket 32, and presses the support bracket 32 in a direction that always protrudes with respect to the case 31. The cover plate 34 has a flat plate shape with a size that covers the case 31 and the flanges 35 on both sides. The cover plate 34 is provided with a roller protruding hole 34a and two screw insertion holes 34b. The roller protruding hole 34a is a through hole formed in a portion facing the opening of the case 31. The roller protruding hole 34a is formed to have a size that allows the roller 37 supported by the support bracket 32 to be inserted therethrough, and does not allow the proximal end portion of the support bracket 32 to be inserted therethrough. The screw insertion hole 34b is a through hole provided in a portion corresponding to the screw hole 35a of the flange 35 when the roller protruding hole 34a is aligned with the opening of the case 31.

[0016] This roller latch 30 is attached at a height position corresponding to the handle 25 of the shoji 20 in the frame body portion 11a of the vertical frame 11. More specifically, a latch opening 11d is provided in advance in a portion of the frame body portion 11a of the vertical frame 11 that faces the vertical frame 24 on the prospective surface on the inner peripheral side, and screw insertion mounting holes (mounting holes) 11e are formed in portions above and below the latch opening 11d. The latch opening 11d is a notch formed to a size that allows the support bracket 32 and the roller 37 to pass through. In the present embodiment, it is formed in a long hole shape along the extending direction of the vertical frame 11 so that the insertion position of the roller 37 can be moved along the vertical direction. The screw insertion mounting hole 11e is a notch formed to be a long hole vertically along the extending direction of the vertical frame 11, and the insertion position of the mounting screw S described later can be moved along the vertical direction. To attach the roller latch 30 to this frame body portion 11a, first, the case 31 is housed inside the frame body portion 11a. At this time, the pressing spring 33 and the support bracket 32 are housed inside the case 31 in advance, and the case 31 is arranged in a state where the opening of the case 31 coincides with the latch opening 11d of the frame body portion 11a. From this state, a cover plate 34 is arranged on the prospective surface on the inner peripheral side of the frame body portion 11a, and by screwing the mounting screw S into the screw hole 35a of the flange 35 through the screw insertion hole 34b of the cover plate 34 and the screw insertion mounting hole 11e of the frame body portion 11a, the roller latch 30 can be attached to the vertical frame 11. In the roller latch 30 attached to the vertical frame 11, the roller 37 is held in a state of protruding outward from the prospective surface of the frame body portion 11a by the pressing spring 33. The maximum protrusion amount of the roller 37 is defined by the base end portion of the support bracket 32 abutting against the cover plate 34. When a pressing force is applied to the roller 37 from this state, the pressing spring 33 is compressed via the support bracket 32, so that the protrusion amount of the roller 37 from the prospective surface of the frame body portion 11a decreases. If the pressing force on the roller 37 is removed, the roller 37 returns to the protruding state again by the restoring force of the pressing spring 33. Also, by adjusting the insertion position of the mounting screw S with respect to the screw insertion mounting hole 11e provided in the frame body portion 11a, it is possible to change the position of the roller latch 30 with respect to the vertical frame 11 up and down.

[0017] As shown in FIGS. 4 and 5, the receiving member 40 is in the form of a plate that is long along the extending direction of the vertical frame 24. It has a guide surface 41 at one edge along the length, which is the left edge in FIG. 4(c) in this embodiment, and a recess 42 at a portion approximately in the center in the vertical, horizontal, and lateral directions. The guide surface 41 is an inclined surface formed by gradually reducing the plate thickness from the central portion toward the edge. The recess 42 is in the shape of a concave cylinder with its axis along the vertical direction, and is formed such that the dimension along the axial direction is larger than that of the roller 37 of the roller latch 30. As is apparent from the figure, an engaging protrusion 43 is formed at a portion of the receiving member 40 located between the recess 42 and the guide surface 41. The engaging protrusion 43 is configured as an inclined surface with a protrusion height larger than the inner bottom surface of the recess 42 and gradually decreasing protrusion height downward. Long hole-shaped screw insertion holes 44 are formed at the upper and lower portions of the recess 42 along the left-right direction. This receiving member 40 is arranged on the prospective surface on the outer peripheral side of the vertical frame 24 in a posture where the guide surface 41 precedes when the shoji 20 is closed. In other words, it is arranged in a posture where the guide surface 41 is located on the a-chamber side, and is attached to the vertical frame 24 by screwing a mounting screw (not shown) through the screw insertion holes 44. The position in the left-right direction (prospective direction) for attaching the receiving member 40 to the vertical frame 24 can be adjusted by changing the position of the mounting screw with respect to the screw insertion holes 44. In the illustrated example, the position of the receiving member 40 is set such that when the shoji 20 is closed, the roller 37 of the roller latch 30 rides over the engaging protrusion 43 and is arranged in the recess 42.

[0018] In the fitting provided with the latch device 27 as described above, when the shoji 20 in the open state is moved in the closing direction with respect to the frame body 10, first, as shown in FIG. 2(b), the roller 37 of the roller latch 30 comes into contact with the guide surface 41 of the receiving member 40. When the roller 37 in contact with the guide surface 41 of the receiving member 40 moves in the further closing direction of the shoji 20, due to the action of its inclined surface, it moves in the direction of being accommodated inside the case 31 against the pressing force of the pressing spring 33. When the shoji 20 moves to the position where it is completely closed with respect to the frame body 10, the roller 37 gets over the engaging protrusion 43 and is accommodated in the recess 42 of the receiving member 40. Therefore, as shown in FIG. 2(a), it moves in the protruding direction by the elastic restoring force of the pressing spring 33, and the roller 37 is in a state of being pressed against the inner bottom surface of the recess 42. In this state, since the roller 37 abuts against the side surface on the b-chamber side at the engaging protrusion 43, the movement of the shoji 20 in the opening direction with respect to the frame body 10 is restricted, and the situation where the shoji 20 accidentally opens can be prevented. To open the shoji 20 with respect to the frame body 10, it is only necessary to apply an external force to the shoji 20 that is sufficient to accommodate the roller 37 in the case 31 against the pressing force of the pressing spring 33 and get over the engaging protrusion 43.

[0019] Here, as described above, the engaging projection 43 of the receiving member 40 with which the roller 37 of the roller latch 30 abuts is configured in an inclined surface shape such that the protruding height gradually decreases downward. Therefore, by changing the portion through which the roller 37 passes with respect to the engaging projection 43, the operating force when opening and closing the shoji 20 can be adjusted. That is, as shown by the arrow R1 in FIG. 4(c), when the roller 37 passes through the upper portion of the engaging projection 43 as the passing path R1, as shown in FIG. 5(a), since the protruding height h1 of the engaging projection 43 is large, as shown in FIG. 6(a), it is necessary to greatly deflect the pressing spring 33. On the other hand, as shown by the arrow R2 in FIG. 4(c), when the roller 37 passes through the lower portion of the engaging projection 43 as the passing path R2, as shown in FIG. 5(b), since the protruding height h2 of the engaging projection 43 is small, as shown in FIG. 6(b), the amount of deflection of the pressing spring 33 can be small. Therefore, when the relative position of the roller latch 30 and the receiving member 40 is adjusted and the passing path R1 of the roller 37 is selected so as to overcome the upper portion of the engaging projection 43, it is possible to configure a fitting with a large operating force when opening and closing the shoji 20. On the other hand, when the passing path R2 of the roller 37 is selected so as to overcome the lower portion of the engaging projection 43, it becomes a fitting that can open and close the shoji 20 with a small operating force. Moreover, as a configuration for adjusting the setting of the operating force, the engaging projection 43 is only configured such that the protruding height is different at the upper and lower positions, and the roller latch 30 does not require an adjustment mechanism. Therefore, it is possible to suppress a situation where the outer dimensions of the receiving member 40 and the roller latch 30 increase, and it is possible to attach them even to those using a small finding dimension as the vertical stile 24 and the vertical frame 11, which is advantageous in terms of appearance quality.

[0020] In addition, in the above-described embodiment, the surface of the receiving member 40 is exemplified as the engaging projection 43 having the maximum protruding height and the protruding height gradually decreasing downward, but the present invention is not limited to this. For example, as in the first modification shown in FIG. 7, it is also possible to configure the engaging projection 143 so that the protruding height is larger than the surface 140a of the receiving member 140. The same reference numerals are given to the same configurations as those in the embodiment in the first modification described above.

[0021] In addition, in the embodiment and Modification 1, since the receiving members 40 and 140 provided with the inclined engaging protrusions 43 and 143 whose protruding heights continuously change are exemplified, it is possible to finely adjust the operating force when opening and closing the shoji 20 by changing the relative positions of the roller 37 of the roller latch 30 and the receiving members 40 and 140. However, the present invention is not limited to this. For example, as in Modification 2 shown in FIG. 8, even a receiving member 240 having a stepped engaging protrusion 243 whose protruding height changes stepwise, it is possible to adjust the operating force when opening and closing the shoji 20. That is, in Modification 2, an engaging protrusion 243 having a plurality of path surfaces 243a, 243b, 243c that are different in protruding height from each other and parallel to the surface 240a of the receiving member 240 is provided. Therefore, if the path surfaces 243a, 243b, 243c with which the roller 37 abuts are changed, it is possible to change the operating force when opening and closing the shoji 20. Also in this case, as in Modification 3 shown in FIG. 9, an engaging protrusion 343 having path surfaces 343a, 343b, 343c whose protruding heights are larger than the surface 340a of the receiving member 340 may be configured. In Modifications 2 and 3, the path surfaces do not necessarily have to be arranged in the order of protruding height. Also, the number of path surfaces is not limited to three. For the same configurations as those in the embodiment in Modifications 2 and 3 described above, the same reference numerals are used.

[0022] In the above-described embodiment, the roller 37 is exemplified as the pressing member, but it does not necessarily have to be the roller 37, and it does not necessarily have to rotate or roll. Also, the pressing member is brought into contact with the receiving member by the coil-shaped pressing spring 33, but it is not necessarily necessary to apply a coil-shaped pressing spring. Furthermore, although an example is shown in which the shoji 20 is supported with respect to the frame body 10 via the hinge 1, it is not necessarily limited to this, and for example, it can also be applied to a sliding door or the like in which the shoji is slidably disposed with respect to the frame body.

[0023] In the above-described embodiment, the mounting position of the roller latch 30 with respect to the vertical frame 11 is changed vertically within the screw insertion mounting hole 11e to select the passage path of the pressing member with respect to the engaging projection. However, the passage path of the pressing member with respect to the engaging projection may be selected by changing the vertical mounting position of the receiving member 40 with respect to the vertical frame 24. When changing the mounting position of the roller latch vertically, in the above-described embodiment, the screw insertion mounting hole 11e of the vertical frame 11 is configured as a long hole. However, long hole-shaped mounting holes may be provided in the flange 35 of the roller latch 30 or the receiving member 40. Further, while the pressing member is provided on the frame body and the receiving member is provided on the shoji, it goes without saying that the reverse may also be true.

[0024] As described above, the latch device according to the present invention includes a pressing member provided on either the frame body or the shoji, and a receiving member provided on the other, and the receiving member is provided with an engaging projection that can come into contact with the pressing member as the shoji opens and closes. When the shoji is closed, the pressing member rides over the engaging projection of the receiving member and then contacts the engaging projection to restrict the movement of the shoji in the opening direction with respect to the frame body. It is a latch device for fittings, and the engaging projection has a length that allows the passage path of the pressing member to be changed, and is configured in an inclined shape in which the protruding height continuously changes in the length direction. According to the present invention, it is possible to adjust the operating force when opening and closing the shoji by changing the passage path of the pressing member with respect to the engaging projection, and there is no need to provide an adjustment mechanism for the pressing member. Therefore, there are advantages such as being able to suppress the situation where the outer dimensions become large, and being able to attach it to fittings using a vertical frame or vertical frame with small found dimensions. Moreover, since the protruding height of the engaging projection continuously changes, the operating force when opening and closing the shoji can be finely adjusted.

[0025] The latch device according to the present invention includes a pressing member provided on either the frame body or the shoji, and a receiving member provided on the other, and the receiving member is provided with an engaging protrusion that can come into contact with the pressing member as the shoji is opened and closed. When the shoji is closed, after the pressing member gets over the engaging protrusion of the receiving member, it comes into contact with the engaging protrusion to restrict the movement of the shoji in the opening direction with respect to the frame body. The latch device for fittings is characterized in that the engaging protrusion has a length that allows the passing path of the pressing member to be changed, and is configured in a stepped shape in which the protruding height changes stepwise in the length direction. According to the present invention, by changing the passing path of the pressing member with respect to the engaging protrusion, it is possible to adjust the operating force when opening and closing the shoji, and there is no need to provide an adjustment mechanism for the pressing member. Therefore, it is possible to suppress the situation where the outer dimensions become large, and it is possible to attach it to fittings using a vertical frame or a vertical stile with a small mounting dimension. Moreover, since the protruding height of the engaging protrusion changes stepwise, even if the passing path of the pressing member with respect to the engaging protrusion is slightly deviated, the operating force when opening and closing the shoji does not change, so the setting work of the operating force becomes easy.

[0026] Further, in the present invention, in the above-described latch device, at least one of the pressing member and the receiving member is attached by screwing a fixing member to either the frame body or the shoji through a long hole-shaped mounting hole along the length direction of the engaging protrusion. According to the present invention, since the operating force when opening and closing the shoji can be changed by changing the position of the mounting hole with respect to the fixing member, the work for adjusting the operating force becomes easy.

[0027] Further, the fitting according to the present invention includes a frame body and a shoji, and the shoji has a vertical stile attached to the part that becomes the leading end of the panel. The pressing member of the above-described latch device is provided on the vertical frame of the frame body, and the receiving member is provided on the vertical stile. According to the present invention, since a receiving member may be provided on the vertical frame, it is advantageous in terms of appearance quality, such as being able to secure a large panel area by setting a small dimension in the finding direction.

Explanation of Signs

[0028] 10 Frame body, 11 Vertical frame, 11d Latch opening, 11e Mounting hole for screw insertion, 20 Shoji, 24 Vertical frame, 27 Latch device, 30 Roller latch, 31 Case, 32 Support bracket, 33 Compression spring, 34 Cover plate, 34a Roller protrusion hole, 34b Screw insertion hole, 35 Flange, 35a Screw hole, 36 Support shaft, 37 Roller, 40,140,240,340 Receiving member, 41 Guide surface, 42 Recess, 43,143,243,343 Engaging protrusion, 243a,243b,243c,343a,343b,343c Path surface, R1,R2 Passing path, S Mounting screw, h1,h2 Protrusion height

Claims

1. A latch device for a fitting, comprising a pressing member provided on either the frame body or the shoji screen, and a receiving member provided on the other, wherein the receiving member is provided with an engaging projection that can come into contact with the pressing member as the shoji screen is opened and closed, and when the shoji screen is closed, after the pressing member has overcome the engaging projection of the receiving member, the pressing member comes into contact with the engaging projection to restrict the movement of the shoji screen in the opening direction with respect to the frame body, the engaging projection has a length that allows the passage path of the pressing member to be changed, and is configured in an inclined shape in which the protruding height continuously changes in the length direction, at least one of the pressing member and the receiving member is attached by screwing a mounting screw into either the frame body or the shoji screen through a mounting hole that is elongated along the length direction of the engaging projection. The latch device is characterized by this.

2. A latch device for a fitting, comprising a pressing member provided on either the frame body or the shoji screen, and a receiving member provided on the other, wherein the receiving member is provided with an engaging projection that can come into contact with the pressing member as the shoji screen is opened and closed, and when the shoji screen is closed, after the pressing member has overcome the engaging projection of the receiving member, the pressing member comes into contact with the engaging projection to restrict the movement of the shoji screen in the opening direction with respect to the frame body, the engaging projection has a length that allows the passage path of the pressing member to be changed, and is configured in a stepped shape in which the protruding height changes stepwise in the length direction, at least one of the pressing member and the receiving member is attached by screwing a mounting screw into either the frame body or the shoji screen through a mounting hole that is elongated along the length direction of the engaging projection. The latch device is characterized by this.

3. A fitting comprising a frame body and a shoji screen, wherein the shoji screen has a vertical stile attached to the part that is the leading edge of the panel, and the pressing member of the latch device according to Claim 1 or Claim 2 is provided on the vertical frame of the frame body, and the receiving member is provided on the vertical stile. The fitting is characterized by this.

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