JP7698561B2 - Latching devices and fittings - Google Patents

Description

The present invention relates to a latch device for fittings that limits the movement of a sliding screen in the opening direction relative to the frame, and to the fittings themselves.

One type of latch device has a roller latch on the vertical frame of the shoji screen, and a vertical frame latch receiver on the frame. The roller latch is configured with a roller that is supported movably relative to the case, and a spring that is interposed between the case and the roller and presses the roller in the direction of protruding. 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, limiting the movement of the shoji screen in the opening direction relative to the frame (see, for example, Patent Document 1).

JP 2007-113221 A

In the latch device described above, the spring receiver that supports the spring is arranged to be movable relative to the case, and an adjustment bolt is arranged between the spring receiver and the case. In this latch device, the pressing force of the pressing member caused by the spring changes when the adjustment bolt is operated to change the distance between the spring receiver and the case, making it possible to adjust the operating force when opening and closing the shoji screen. However, the case that houses the spring receiver and adjustment bolt will have large external dimensions, which may cause problems such as making it difficult to attach to fittings that use vertical frames or stiles with small viewing dimensions.

In view of the above situation, the present invention aims to provide a latch device and fittings that can adjust the operating force required to open and close a sliding door while preventing the overall dimensions from becoming too large.

In order to achieve the above-mentioned object, the latch device of the present invention comprises a pressing member provided on either the frame body or the screen, and a receiving member provided on the other, the receiving member being provided with an engaging protrusion that can abut against the pressing member as the screen is opened or closed, and when the screen is closed, the pressing member climbs over the engaging protrusion of the receiving member and then abuts against the engaging protrusion, thereby limiting the movement of the screen in the opening direction relative to the frame body, wherein the engaging protrusion has a length that allows the passage path of the pressing member to be changed, and is configured with an inclined shape whose protruding height changes continuously in the length direction, and 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 screen through a long-hole-shaped attachment hole that runs along the length direction of the engaging protrusion .

In addition, the latch device of the present invention comprises a pressing member provided on either the frame body or the shoji screen, and a receiving member provided on the other of the two, and the receiving member is provided with an engaging protrusion that can abut against the pressing member as the shoji screen is opened or closed, and when the shoji screen is closed, the pressing member climbs over the engaging protrusion of the receiving member and then abuts against the engaging protrusion, thereby limiting the movement of the shoji screen in the opening direction relative to the frame body, wherein the engaging protrusion has a length that allows the passage path of the pressing member to be changed, and is configured in a stepped shape whose protruding height changes in stages in the longitudinal direction, and 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 screen through a long-hole-shaped attachment hole that runs along the longitudinal direction of the engaging protrusion .

According to the present invention, it is possible to adjust the operating force when opening and closing the shoji screen by changing the passage path of the pressing member relative to the engaging protrusion, and there is no need to provide an adjustment mechanism for the pressing member. This has the advantage that it is possible to prevent the external dimensions from becoming large, and it is possible to attach it to fittings that use vertical frames or vertical stiles with small visible dimensions.

1 is a diagram showing an appearance of a fixture according to an embodiment of the present invention; 2A and 2B show the fitting shown in FIG. 1, in which FIG. 2A is a cross-sectional view of the fitting when the door is closed, and FIG. 2B is a cross-sectional view of the fitting when the door is open. 2A and 2B show a roller latch applied to the latch device of the fixture shown in FIG. 1, where FIG. 2A is a vertical cross-sectional view and FIG. 2B is a right side view of FIG. 2A, 2B, and 2C show a receiving member to be applied to the latch device of the fixture shown in FIG. 1, in which FIG. 2A is a perspective view, FIG. 2B is a side view, and FIG. 2A shows a receiving member to be applied to the latch device of the fixture shown in FIG. 1, where FIG. 2A is a sectional perspective view broken at the upper part of the engaging protrusion, and FIG. 2B is a sectional perspective view broken at the lower part of the engaging protrusion. This shows an enlarged view of the main parts of the fitting shown in Figure 1, where (a) is a cross-sectional view of the pressing member passing through the upper part of the engaging protrusion, and (b) is a cross-sectional view of the pressing member passing through the lower part of the engaging protrusion. 2A, 2B, and 2C show modified example 1 of the receiving member applied to the fitting shown in FIG. 1, in which (a) is a perspective view, (b) is a side view, and (c) is a front view. 1A, B, C show a second modified example of the receiving member applied to the fitting shown in FIG. 1, in which FIG. 1A, 1B, and 1C show a third modified example of the receiving member applied to the fitting shown in FIG. 1, in which FIG.

Below, a preferred embodiment of the latch device and fittings according to the present invention will be described in detail with reference to the attached drawings. In the following, for convenience, the terms "prospect direction" and "finding direction" may be used. The "prospect direction" is the direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the prospect direction may be referred to as a "prospect surface." The "finding direction" is the direction along the top and bottom perpendicular to the prospect direction in the case of an object that extends horizontally, such as an upper frame. In the case of an object that extends vertically, such as a vertical frame, the direction along the horizontal perpendicular to the prospect direction is called the "finding direction." A surface along the prospect direction may be called a "finding surface."

1 and 2 show a fitting according to an embodiment of the present invention. The fitting shown here is called a single-leaf door, and includes a frame 10 and a shoji screen 20. The frame 10 is constructed by providing an upper frame 12 between the upper ends of the left and right vertical frames 11. The shoji screen 20 is constructed by attaching an upper frame 22, a lower frame 23, and left and right vertical frames 24 to the four periphery of a rectangular panel 21 of glass or the like. The shoji screen 20 is supported by the frame 10 with a hinge 1 provided between one vertical frame 24 and one vertical frame 11 of the frame 10, and the opening of the frame 10 can be opened and closed by rotating around the hinge axis along the top and bottom. Although not shown in the figures, in this fitting, the gap between the vertical frame 11 of the frame 10 and the vertical frame 24 of the shoji screen 20 can be adjusted by appropriately changing the mounting position of the hinge 1. Handles 25 are attached to both sides of the panel 21 at the door end. The vertical frame 11 and upper frame 12 that make up the frame 10, and the upper frame 22, lower frame 23, and vertical frame 24 that make up the shoji screen 20 are extruded shapes made of metal such as aluminum alloy, and each is configured so that the entire length along the longitudinal direction has a substantially uniform cross-sectional shape. Below, the configuration of the vertical frame 11 of the frame 10 and the vertical frame 24 of the shoji screen 20 will be described in detail, along with the characteristic features of this application. For the sake of convenience, the following description will be given assuming that the above-mentioned fittings are provided at a position that separates room a and room b, and are configured to protrude toward room b when the shoji screen 20 is opened.

The vertical frame 11 of the frame body 10 is symmetrical on the left and right, with the frame body 11a and the sight wall 11b molded as one unit. The frame body 11a is a hollow cylinder with a roughly rectangular cross section. The sight wall 11b protrudes inward from the corner on the a-room side of the inner periphery of the frame body 10 in the sight direction. The protruding dimension of this sight wall 11b is set so that when the shoji screen 20 is closed, the edge on the inner periphery faces the sight surface of the vertical frame 24 facing the a-room. A seal member 11c is attached to the protruding edge of the sight wall 11b facing the b-room, over almost the entire length of the vertical frame 11, to ensure airtightness between the shoji screen 20 and the sight wall 11b.

The vertical frame 24 of the shoji screen 20 is symmetrical on the left and right, and the frame body 24a, two panel holding pieces 24b, and two cover holding pieces 24c are integrally molded. The frame body 24a is a hollow cylinder of a roughly rectangular shape. In the illustrated example, a vertical frame 24 is applied that has a frame body 24a whose dimension in the front direction is smaller (almost 1/4) than the dimension in the front direction. The panel holding pieces 24b protrude from the inner surface of the frame body 24a along the front direction to the inner side, and hold the panel 21 between them. The cover holding pieces 24c protrude from both side edges on the outer side of the frame body 24a in a direction gradually approaching each other toward the outer periphery, and hold the cover member 26 between them in a detachable manner. The cover member 26, like the vertical frame 24, is an extruded member made of a metal such as an aluminum alloy, and is formed to have approximately the same longitudinal dimension as the vertical frame 24.

A latch device 27 is provided between the vertical frame 11 and vertical stile 24, which are configured as described above, at the door end. The latch device 27 is used to limit the movement of the shoji screen 20 in the opening direction relative to the frame body 10, and is comprised of a roller latch 30 provided on the vertical frame 11 and a receiving member 40 provided on the vertical stile 24.

As shown in Figs. 2 and 3, the roller latch 30 is composed of a case 31, a support bracket 32, a pressure spring 33, and a cover plate 34. The case 31 is a rectangular parallelepiped with one side open. A spring seat 31a is provided on the inner bottom surface of the case 31 so as to protrude. Flanges 35 extend in directions away from each other on both sides of the opening in the case 31. The flanges 35 are provided so as to be located on the same plane, and each extending end has a screw hole 35a. The support bracket 32 is sized to be accommodated inside the case 31, and a support shaft 36 is provided between the opposing support plate portions 32a. The support shaft 36 extends in the vertical direction and supports the roller (pressing member) 37 so that it can rotate around its axis. A spring abutment seat 32b is provided so as to protrude from a portion of the support bracket 32 corresponding to the spring seat 31a of the case 31. The pressure spring 33 is a coil-shaped 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 constantly presses the support bracket 32 in a protruding direction relative to the case 31. The cover plate 34 is a flat plate having a size sufficient to cover the case 31 and the flanges 35 on both sides. The cover plate 34 is provided with a roller protrusion hole 34a and two screw insertion holes 34b. The roller protrusion hole 34a is a through hole formed in a portion facing the opening of the case 31. The roller protrusion hole 34a is formed to a size that allows the roller 37 supported by the support bracket 32 to be inserted therethrough, but does not allow the base end portion of the support bracket 32 to be inserted therethrough. The screw insertion hole 34b is a through hole provided in a portion that corresponds to the screw hole 35a of the flange 35 when the roller protrusion hole 34a is aligned with the opening of the case 31.

The roller latch 30 is attached to the frame body 11a of the vertical frame 11 at a height corresponding to the handle 25 of the shoji screen 20. More specifically, the frame body 11a of the vertical frame 11 has a latch opening 11d in advance in the part facing the vertical frame 24 on the inner peripheral surface, and screw insertion mounting holes (mounting holes) 11e are formed above and below the latch opening 11d. The latch opening 11d is a cutout formed to a size that allows the support bracket 32 and roller 37 to be inserted. In this embodiment, it is formed in the shape of a long hole along the extension 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 cutout formed to be a long hole vertically along the extension direction of the vertical frame 11, and it is possible to move the insertion position of the mounting screw S described later along the vertical direction. To attach the roller latch 30 to the frame body 11a, the case 31 is first accommodated inside the frame body 11a. At this time, the pressure spring 33 and the support bracket 32 are accommodated inside the case 31 in advance, and the opening of the case 31 is arranged in a state where it matches the latch opening 11d of the frame body 11a. From this state, the cover plate 34 is arranged on the projection surface that is the inner periphery side of the frame body 11a, and the mounting screw S is screwed 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 11a, so that the roller latch 30 can be attached to the vertical frame 11. In the roller latch 30 attached to the vertical frame 11, the pressure spring 33 keeps the roller 37 in a state where it protrudes outward from the projection surface of the frame body 11a. The maximum protrusion amount of the roller 37 is determined by the base end portion of the support bracket 32 abutting against the cover plate 34. When pressure is applied to the roller 37 from this state, the pressure spring 33 is compressed via the support bracket 32, reducing the amount of protrusion of the roller 37 from the visible surface of the frame body 11a. When the pressure on the roller 37 is removed, the restoring force of the pressure spring 33 causes the roller 37 to return to its protruding state. In addition, the position of the roller latch 30 relative to the vertical frame 11 can be changed up or down by adjusting the insertion position of the mounting screw S into the screw insertion mounting hole 11e provided in the frame body 11a.

4 and 5, the receiving member 40 is a plate-like member that is longitudinal along the extension direction of the vertical frame 24, and has a guide surface 41 on one edge along the longitudinal direction, which in this embodiment is the edge on the left side in FIG. 4(c), and has a recess 42 in a portion that is approximately in the center in the vertical and horizontal directions. The guide surface 41 is an inclined surface formed by gradually reducing the plate thickness from the center portion toward the edge. The recess 42 is a cylindrical recess whose axis is in the vertical direction, and is formed so that the dimension along the axis is larger than the roller 37 of the roller latch 30. As is clear from the figure, an engagement protrusion 43 is formed in the portion of the receiving member 40 located between the recess 42 and the guide surface 41. The engagement protrusion 43 is configured as an inclined surface so that the protruding height is greater than the inner bottom surface of the recess 42 and the protruding height gradually decreases downward. The upper and lower portions of the recess 42 are formed with screw insertion holes 44 that are elongated along the horizontal direction. The receiving member 40 is positioned on the outer peripheral surface of the vertical frame 24 with the guide surface 41 leading when the screen 20 is closed, in other words with the guide surface 41 positioned on the a-room side, and is attached to the vertical frame 24 by screwing a mounting screw (not shown) through the screw insertion hole 44. The left-right (projection) position at which the receiving member 40 is attached to the vertical frame 24 can be adjusted by changing the position of the mounting screw relative to the screw insertion hole 44. In the illustrated example, the position of the receiving member 40 is set so that the roller 37 of the roller latch 30 passes over the engagement protrusion 43 and is positioned in the recess 42 when the screen 20 is closed.

In the fittings provided with the latch device 27 as described above, when the screen 20, which is open relative to the frame 10, is moved in the closing direction, the roller 37 of the roller latch 30 first comes into contact with the guide surface 41 of the receiving member 40, as shown in FIG. 2(b). When the screen 20 moves further in the closing direction, the roller 37, which comes into contact with the guide surface 41 of the receiving member 40, moves in the direction of being accommodated inside the case 31 against the pressing force of the pressing spring 33 due to the action of the inclined surface. When the screen 20 moves to a position where it is completely closed relative to the frame 10, the roller 37 overcomes the engaging protrusion 43 and is accommodated in the recess 42 of the receiving member 40, so that the elastic restoring force of the pressing spring 33 moves in the protruding direction, and the roller 37 is pressed against the inner bottom surface of the recess 42, as shown in FIG. 2(a). In this state, the roller 37 abuts against the side of the b-room side at the engagement protrusion 43, restricting the movement of the screen 20 in the opening direction relative to the frame 10, preventing the screen 20 from opening accidentally. To open the screen 20 relative to the frame 10, the roller 37 is housed in the case 31 against the pressing force of the compression spring 33, and an external force sufficient to overcome the engagement protrusion 43 is applied to the screen 20.

Here, as described above, the engagement protrusion 43 of the receiving member 40 against which the roller 37 of the roller latch 30 abuts is configured as an inclined surface so that the protruding height gradually decreases downward. Therefore, by changing the part through which the roller 37 passes relative to the engagement protrusion 43, it is possible to adjust the operating force when opening and closing the shoji screen 20. In other words, as shown by the arrow R1 in FIG. 4(c), when the roller 37 passes through the upper part of the engagement protrusion 43 as the passage path R1, as shown in FIG. 5(a), the protruding height h1 of the engagement protrusion 43 is large, so that the pressing spring 33 needs to be largely deflected as shown in FIG. 6(a). On the other hand, as shown by the arrow R2 in FIG. 4(c), when the roller 37 passes through the lower part of the engagement protrusion 43 as the passage path R2, as shown in FIG. 5(b), the protruding height h2 of the engagement protrusion 43 is small, so that the amount of deflection of the pressing spring 33 is small as shown in FIG. 6(b). Therefore, by adjusting the relative position of the roller latch 30 and the receiving member 40 and selecting the path R1 of the roller 37 so that it passes over the upper part of the engagement protrusion 43, a fitting can be constructed that requires a large operating force when opening and closing the shoji screen 20. On the other hand, by selecting the path R2 of the roller 37 so that it passes over the lower part of the engagement protrusion 43, the fitting can be constructed so that the shoji screen 20 can be opened and closed with a small operating force. Moreover, the configuration for adjusting the operating force setting is simply to configure the engagement protrusion 43 so that the protruding height differs between the upper and lower positions, and no adjustment mechanism is required for the roller latch 30. Therefore, it is possible to prevent the external dimensions of the receiving member 40 and the roller latch 30 from becoming large, and it is possible to attach it to a vertical frame 24 or vertical frame 11 that has a small visible dimension, which is advantageous in terms of appearance quality.

In the above-described embodiment, the engaging protrusion 43 has a maximum protruding height on the surface of the receiving member 40, and the protruding height gradually decreases downward. However, the present invention is not limited to this. For example, as in Modification 1 shown in FIG. 7, it is also possible to configure the engaging protrusion 143 so that the protruding height is greater than the surface 140a of the receiving member 140. In Modification 1 described above, the same components as in the embodiment are given the same reference numerals.

In addition, in the embodiment and the modified example 1, the receiving members 40, 140 are provided with inclined engagement protrusions 43, 143 whose protruding height changes continuously, so that it is possible to finely adjust the operating force when opening and closing the shoji screen 20 by changing the relative position between the roller 37 of the roller latch 30 and the receiving members 40, 140. However, the present invention is not limited to this. For example, as in the modified example 2 shown in FIG. 8, even if the receiving member 240 has a stepped engagement protrusion 243 whose protruding height changes stepwise, it is possible to adjust the operating force when opening and closing the shoji screen 20. That is, in the modified example 2, the engaging protrusion 243 is provided with a plurality of path surfaces 243a, 243b, 243c that have different protruding heights and are parallel to the surface 240a of the receiving member 240. Therefore, by changing the path surfaces 243a, 243b, 243c that the roller 37 abuts against, it is possible to change the operating force when opening and closing the shoji screen 20. Even in this case, as in Modification 3 shown in FIG. 9, an engagement protrusion 343 may be configured with path surfaces 343a, 343b, and 343c that have a protruding height greater than the surface 340a of the receiving member 340. Note that in Modifications 2 and 3, the path surfaces do not necessarily need to be arranged in order of protruding height. The number of path surfaces is not limited to three. In Modifications 2 and 3 described above, the same reference numerals are used for configurations that are the same as those in the embodiment.

In the above embodiment, roller 37 is exemplified as the pressing member, but it does not necessarily have to be roller 37, and it does not necessarily have to rotate or roll. In addition, the pressing member is abutted against the receiving member by coil-shaped pressing spring 33, but it is not necessarily required to use a coil-shaped pressing spring. Furthermore, although an example in which the screen 20 is supported on the frame body 10 via hinge 1 is exemplified, this is not necessarily limited to this, and it is possible to apply it to, for example, a sliding door in which the screen is arranged to be slidable on the frame body.

In the above-mentioned embodiment, the mounting position of the roller latch 30 relative to the vertical frame 11 is changed up or down within the screw insertion mounting hole 11e to select the passage path of the pressing member relative to the engaging protrusion, but the mounting position of the receiving member 40 relative to the vertical frame 24 may be changed up or down to select the passage path of the pressing member relative to the engaging protrusion. In addition, when changing the mounting position of the roller latch up or down, in the above-mentioned embodiment, the screw insertion mounting hole 11e of the vertical frame 11 is configured as an elongated hole, but elongated mounting holes may be provided in the flange 35 of the roller latch 30 or the receiving member 40. Furthermore, while the pressing member is provided on the frame body and the receiving member is provided on the screen, the reverse is of course also possible.

As described above, the latch device of the present invention comprises a pressing member provided on either the frame body or the screen, and a receiving member provided on the other, and the receiving member is provided with an engaging protrusion that can abut against the pressing member as the screen is opened or closed, and when the screen is closed, the pressing member climbs over the engaging protrusion of the receiving member and then abuts against the engaging protrusion, thereby limiting the movement of the screen in the opening direction relative to the frame body, and is characterized in that the engaging protrusion has a length that allows the passage path of the pressing member to be changed, and is configured in an inclined shape with a protruding height that changes continuously in the longitudinal direction.
According to this invention, it is possible to adjust the operating force when opening and closing the shoji screen by changing the passage path of the pressing member relative to the engaging protrusion, and there is no need to provide an adjustment mechanism for the pressing member. Therefore, there are advantages such as being able to prevent the external dimensions from becoming large, and being able to attach it to fittings that use vertical frames or vertical stiles with small visible dimensions. Moreover, since the protruding height of the engaging protrusion changes continuously, it is possible to fine-tune the operating force when opening and closing the shoji screen.

In addition, the latch device of the present invention comprises a pressing member provided on either the frame body or the screen, and a receiving member provided on the other, and the receiving member is provided with an engaging protrusion that can abut against the pressing member as the screen is opened or closed, and when the screen is closed, the pressing member climbs over the engaging protrusion of the receiving member and then abuts against the engaging protrusion, thereby limiting the movement of the screen in the opening direction relative to the frame body, and is characterized in that the engaging protrusion has a length that allows the passage path of the pressing member to be changed, and is configured in a stepped shape with a protruding height that changes in stages in the longitudinal direction.
According to this invention, it is possible to adjust the operating force when opening and closing the shoji screen by changing the passage path of the pressing member relative to the engaging protrusion, and there is no need to provide an adjustment mechanism for the pressing member. Therefore, there are advantages such as being able to prevent the external dimensions from becoming large, and being able to attach it to fittings that use vertical frames or vertical stiles with small visible dimensions. Moreover, since the protruding height of the engaging protrusion changes in stages, the operating force when opening and closing the shoji screen does not change even if the passage path of the pressing member relative to the engaging protrusion is slightly misaligned, so the operation of setting the operating force is easy.

The present invention is also characterized in that, in the above-mentioned 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 screen through a mounting hole that is elongated along the longitudinal direction of the engaging protrusion.
According to this invention, the operating force required to open and close the screen can be changed by changing the position of the mounting hole relative to the fixed member, making it easier to adjust the operating force.

In addition, the building material of the present invention comprises a frame body and a screen, and the screen has a vertical frame attached to the part that becomes the door edge of the panel, and is characterized in that the pressing member of the above-mentioned latch device is provided on the vertical frame of the frame body, and the receiving member is provided on the vertical frame.
According to this invention, since it is only necessary to provide a receiving member on the vertical frame, it is possible to secure a large panel area by setting the dimension in the viewing direction small, which is advantageous in terms of appearance quality.

10 Frame, 11 Vertical frame, 11d Latch opening, 11e Screw insertion mounting hole, 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 Engagement protrusion, 243a, 243b, 243c, 343a, 343b, 343c Path surface, R1, R2 Passage path, S Mounting screw, h1, h2 Protrusion height

Claims (3)

A latch device for fittings comprising a pressing member provided on either a frame body or a door, and a receiving member provided on the other, the receiving member being provided with an engaging protrusion that can come into contact with the pressing member as the door is opened or closed, and when the door is closed, the pressing member rides over the engaging protrusion of the receiving member and then comes into contact with the engaging protrusion, thereby restricting movement of the door in the opening direction relative to the frame body,
The engagement protrusion has a length that allows the passage path of the pressing member to be changed, and is configured in an inclined shape such that the protruding height changes continuously in the length direction ,
A latch device characterized in that 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 screen through a long mounting hole that is elongated along the longitudinal direction of the engaging protrusion . A latch device for fittings comprising a pressing member provided on either a frame body or a door, and a receiving member provided on the other, the receiving member being provided with an engaging protrusion that can come into contact with the pressing member as the door is opened or closed, and when the door is closed, the pressing member rides over the engaging protrusion of the receiving member and then comes into contact with the engaging protrusion, thereby restricting movement of the door in the opening direction relative to the frame body,
The engagement protrusion 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 ,
A latch device characterized in that 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 screen through a long mounting hole that is elongated along the longitudinal direction of the engaging protrusion . A fixture comprising a frame and a screen, the screen having a vertical frame attached to the part that will become the door edge of the panel, the pressing member of the latch device described in claim 1 or claim 2 being provided on the vertical frame of the frame, and the receiving member being provided on the vertical frame.

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