JP2024086043A - Movement restriction devices and fixtures - Google Patents

Abstract

To further surely restrict movement of a sash.SOLUTION: A movement restriction device 1 comprising an operation engaging member 41 mounted on a frame body 10 and a receiving member 51 mounted on a screen door 30 provided movably to the frame body 10, restricts the movement of the screen door 30 in an opening direction relative to the frame body 10 by making the operation engaging member 41 and the receiving member 51 engage with each other when the screen door 30 is placed in a closed position. A guide rib 44d that positions the screen door 30 in a depth direction relative to the frame body 10 by abutting on a right screen door stile 34 when the screen door 30 moves to the closed position is integrated with a back plate cover 44 of the operation engaging member 41.SELECTED DRAWING: Figure 7

Description

The present invention relates to a movement restriction device and fittings that restrict the movement of screen doors, such as screen doors.

Some fixtures in which a shoji screen is slidably arranged relative to a frame are equipped with a movement limiting device to limit the movement of the shoji screen. This type of movement limiting device is configured, for example, by providing an engaging member on the vertical frame that makes up the frame, and a receiving member on the vertical stile that makes up the shoji screen, and by engaging the engaging member with the receiving member when the shoji screen is placed in the closed position, preventing the shoji screen from moving in the opening direction (see, for example, Patent Document 1).

JP 2005-240285 A

The above-mentioned movement restriction device allows the engagement member to engage with the receiving member without any operation if the position of the screen in the projection direction relative to the frame is accurately specified and the screen is moved toward the closed position. However, in actual building materials, the position of the screen may shift in the projection direction relative to the frame, and the engagement member may not engage with the receiving member when the screen is placed in the closed position. In particular, a screen door that is slidably arranged relative to the frame not only has the upper and lower frames as guides for the frame, but also tends to have lower rigidity than a screen door with glass panels, raising concerns that the above-mentioned problems may become more pronounced.

In view of the above-mentioned circumstances, the present invention aims to provide a movement restriction device and fittings that can more reliably restrict the movement of shoji screens.

To achieve the above object, the movement restriction device of the present invention comprises an engagement member attached to either a frame body or a screen arranged to be movable relative to the frame body, and a receiving member attached to the other of the frame body or the screen, and is a movement restriction device that restricts the movement of the screen in the opening direction relative to the frame body by engaging the engagement member and the receiving member with each other when the screen is placed in the closed position, and is characterized in that one of the frame body and the screen is provided with a positioning guide that abuts against the other when the screen moves toward the closed position, thereby positioning the screen in the projected direction relative to the frame body.

According to the present invention, when the shoji screen is placed in the closed position, the position of the shoji screen in the projected direction relative to the frame body is determined by the positioning guide, so even if the position of the shoji screen in the projected direction relative to the frame body is misaligned, this is corrected, and by moving the shoji screen to the closed position, the engaging member can be reliably engaged with the receiving member.

FIG. 1 is a vertical cross-sectional view showing a fixture to which a movement restriction device according to an embodiment of the present invention is applied, with a screen door positioned in an open position. FIG. 2 is a cross-sectional view of the fixture shown in FIG. 1 . FIG. 2 is a vertical cross-sectional view of the fixture shown in FIG. 1 with the screen door in a closed position. FIG. 4 is a cross-sectional view of the fixture shown in FIG. 3 . FIG. 4 is a perspective view of the main part of the fixture in the state shown in FIG. 3 as viewed from the inside of the room. FIG. 2 is a perspective view of the main part of the fixture in the state shown in FIG. 1 as viewed from the inside of the room. FIG. 2 is a perspective view of the main part of the fixture in the state shown in FIG. 1, as viewed from the outside of the room. 2 is an exploded perspective view of an operation unit of a movement restriction device applied to the fixture shown in FIG. 1, as viewed from the indoor side. FIG. 9 is an exploded perspective view of the operation unit of the movement restriction device shown in FIG. 8 as viewed from the outside of the room. 9A and 9B are views of the operation unit shown in FIG. 8 as viewed from the outside of the room, where FIG. 9A is an external perspective view and FIG. 9B is a perspective view showing the internal configuration. FIG. 3 is an enlarged cross-sectional view of a main portion of the fixture shown in FIG. 2. 2 is a perspective view of a latch unit of a movement restriction device applied to the fixture shown in FIG. 1, as viewed from the outside of the room. FIG. 13 is a perspective view of the latch unit shown in FIG. 12 as viewed from the inner periphery side of the frame body. 13 is an exploded perspective view of the latch unit shown in FIG. 12 as viewed from the exterior side. This shows the main parts of the movement restriction device applied to the fixture shown in Figure 1, and is a conceptual diagram sequentially showing (a) to (d) the operating states of the engaging member and receiving member when the screen door is slid toward the closed position relative to the frame body. This is a conceptual illustration of the main parts of the movement restriction device applied to the fitting shown in Figure 1, and is a cross-sectional view of the main parts sequentially showing, from (a) to (d), the operating states of the engaging member and the receiving member when the screen door is slid toward the closed position relative to the frame body.

Below, a preferred embodiment of the movement restriction 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 prospective direction and find direction may be used. The prospective direction is the direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the prospective direction may be referred to as a find surface. The find direction is the direction along the top and bottom perpendicular to the prospective direction in the case of an object that extends along the horizontal direction, such as a bottom frame. In the case of an object that extends along the vertical direction, such as a vertical frame, the horizontal direction perpendicular to the prospective direction is called the find direction. A surface along the find direction may be called a find surface.

Figures 1 to 4 show a fitting to which a movement restriction device according to an embodiment of the present invention is applied. The fitting illustrated here is what is called a sliding window, which comprises a frame 10, an inner screen 20A on the indoor side and an outer screen 20B on the outdoor side, with a screen door (screen) 30 on the part further outside the outer screen 20B. The frame 10 is formed by framing an upper frame 11, a lower frame 12 and left and right vertical frames 13, 14 all around. The inner screen 20A and the outer screen 20B are each formed by attaching an upper frame 22, a lower frame 23 and left and right vertical frames 24, 25 to the four perimeters of a rectangular glass panel 21. These screens 20A, 20B are arranged to be slidable along the length of the lower frame 12 by positioning the rollers 26 on the lower frame 23 so that they can roll on the lower guide rail 12a of the lower frame 12, and by positioning the upper guide rail 11a of the upper frame 11 in the slide guide groove 22a of the upper frame 22. In the illustrated example, the frame body 10, inner screen 20A, and outer screen 20B are configured so that the opening of the frame body 10 can be closed when the outer screen 20B is moved to the left end (closed position of the outer screen 20B) and the inner screen 20A is moved to the right end (closed position of the inner screen 20A) when viewed from inside the room.

The screen door 30 is constructed by attaching the screen door upper frame 32, screen door lower frame 33, and left and right screen door vertical frames 34, 35 to the four periphery of the rectangular screen material 31, and is constructed to a size that can cover the space between the vertical frame 25 that is the joint of the outer screen 20B arranged in the closed position between the upper frame 11 and the lower frame 12, and the vertical frame (frame shape: hereinafter referred to as the right vertical frame 13) located on the right side when viewed from the inside of the room. This screen door 30 is arranged so that the wheel 36 attached to the screen door lower frame 33 can roll on the screen door lower rail 12b attached to the lower frame 12, and the rail guide 32a attached to the screen door upper frame 32 is engaged with the screen door upper rail 11b attached to the upper frame 11, so that it can slide along the length of the lower frame 12.

In the fitting having the above configuration, a movement limiting device 1 is provided between the frame body 10 and the screen door 30. More specifically, as shown in Figs. 1 to 7, the movement limiting device 1 is configured between the right vertical frame 13 of the frame body 10 and the screen door vertical frame (a shoji shape material: hereinafter referred to as the right screen door vertical frame 34) located on the right side of the screen door 30 when viewed from the inside of the room, so as to prevent the screen door 30 from accidentally sliding (self-propelling) in the opening direction. In this embodiment, the movement limiting device 1 is provided at a position that is approximately halfway in the height direction of each of the right vertical frame 13 and the right screen door vertical frame 34. The configuration of the movement limiting device 1 will be described below, including the detailed configuration of the right vertical frame 13 and the right screen door vertical frame 34. For convenience, in the following description, the directions of each component of the movement limiting device 1 will be specified in the position attached to the right vertical frame 13 and the right screen door vertical frame 34.

The right vertical frame 13 of the frame body 10 and the right screen door vertical frame 34 of the screen door 30 are extruded shapes formed from metal such as aluminum alloy or resin, and each is configured to have a substantially uniform cross-sectional shape over the entire length along the longitudinal direction B (up-down direction). The right vertical frame 13 has a flat frame base portion 13a extending along the front direction, and a flat sight frame plate portion 13b extending along the front direction from the edge located on the outside of the frame base portion 13a. The sight frame plate portion 13b is provided so that its position in the front direction is substantially the same as the upper screen door rail 11b of the upper frame 11 and the lower screen door rail 12b of the lower frame 12, and has a portion that protrudes toward the inner circumference from the frame base portion 13a. The right screen door vertical frame 34 has a hollow cylindrical frame base 34a and two visible frame plate parts 34b that extend from both corners located on the outer periphery of the frame base 34a toward the outer periphery. The visible frame plate parts 34b have locking surfaces 34c on the opposing parts. The locking surfaces 34c are formed to face the frame base part 34a by providing protrusions on the opposing inner surfaces of the visible frame plate parts 34b. As shown in FIG. 2, in this embodiment, the frame 10 and the screen 30 are configured so that when the wheel 36 of the screen bottom frame 33 is placed on the screen bottom rail 12b of the bottom frame 12, and the rail guide 32a of the screen top frame 32 is engaged with the screen top rail 11b of the top frame 11, the frame base 34a is positioned outside the room relative to the frame plate portion 13b.

As shown in Figures 5 to 7, the movement restriction device 1 is configured to include an operation unit 40 and a latch unit 50. In this embodiment, the operation unit 40 is attached to the inner peripheral portion of the sight frame plate portion 13b of the right vertical frame 13, and the latch unit 50 is attached to the portion located between the two sight frame plate portions 34b of the frame base portion 34a of the right vertical screen frame 34. The operation unit 40 is configured to include an operation engagement member (engagement member) 41, a back plate 42, an operation base 43, and a back plate cover (engagement cover body) 44, and the latch unit 50 is configured to include a receiving member 51, a protective cap 52, and a latch case 53.

As shown in Figures 8 to 10, the operation engagement member 41 of the operation unit 40 is constructed by appropriately bending a metal plate, and has a slide guide plate portion 41a arranged on the sight surface of the sight frame plate portion 13b facing the room, and a cover plate portion 41b and an engagement plate portion 41c arranged on the outside of the sight frame plate portion 13b.

The slide guide plate portion 41a is a long, flat plate extending in the viewing direction along the length of the right vertical frame 13, and has a guide hole 41d and a mating plate portion 41e at both the top and bottom ends. The guide hole 41d is a long hole extending along the length of the right vertical frame 13, and is arranged side by side with the edge portion on the outer periphery side of the slide guide plate portion 41a. The mating plate portion 41e is a flat plate provided at the end of the slide guide plate portion 41a, and is configured to protrude one step further toward the interior than the slide guide plate portion 41a.

The cover plate portion 41b extends from the center of the slide guide plate portion 41a in the vertical direction toward the outside of the room, and is a flat plate with a width larger than the dimension along the front direction of the right screen vertical frame 34. In the illustrated example, the slide guide plate portion 41a and the cover plate portion 41b are connected to each other via a connecting plate portion 41f provided to bypass the inner periphery of the sight frame plate portion 13b. In other words, the connecting plate portion 41f protrudes from the center of the edge portion located on the inner periphery of the slide guide plate portion 41a beyond the sight frame plate portion 13b to the outside of the room, then bends and extends toward the outer periphery so as to be approximately parallel to the slide guide plate portion 41a. The cover plate portion 41b extends so as to protrude from the edge portion on the outer periphery of this connecting plate portion 41f toward the outside of the room. A guide cover plate portion 41g is provided on the edge portion located on the outside of the room of the cover plate portion 41b. The guide cover plate portion 41g is inclined relative to the slide guide plate portion 41a so that it gradually becomes more inward toward the outside of the room.

The engagement plate portion 41c is a generally rectangular flat plate extending from the cover plate portion 41b, approximately halfway between the slide guide plate portion 41a and the guide cover plate portion 41g, toward the inner periphery, and is provided so as to be approximately parallel to the slide guide plate portion 41a. A lower engagement protrusion portion 41h is provided on the extending edge of this engagement plate portion 41c so as to protrude downward.

The lower engagement protrusion 41h is provided on the same flat plate as the engagement plate 41c, and as shown in FIG. 15, has an engagement guide surface 41j on the inner peripheral edge and an engagement surface 41k on the outer peripheral edge. The engagement guide surface 41j is inclined with respect to the vertical direction so that it gradually becomes more peripheral toward the downward direction. The engagement surface 41k extends as far as possible along the vertical direction. In addition, an upper engagement protrusion 41m is provided on the extending edge of the engagement plate 41c so as to face upward in a symmetrical shape to the lower engagement protrusion 41h. This upper engagement protrusion 41m is upside down when the operation engagement member 41 is provided on the vertical frame 14 located on the left side of the frame body 10 when viewed from the inside of the room, and functions as the lower engagement protrusion 41h described below.

As shown in Figures 8 to 10, the back plate 42 is disposed between the sighting surface of the sighting frame plate portion 13b facing the outside of the room and the connecting plate portion 41f of the operation engagement member 41, and is in the form of a plate having approximately the same vertical dimensions as the slide guide plate portion 41a of the operation engagement member 41. Both upper and lower ends of the back plate 42 are provided with screw holes 42a and fitting grooves 42b. The screw holes 42a are arranged vertically at approximately the same pitch as the guide holes 41d, into which the shaft portions 45a of the mounting screws 45 that have passed through the guide holes 41d of the slide guide plate portion 41a can be screwed. The fitting grooves 42b are groove-shaped notches formed in the vertical direction from both upper and lower end faces of the back plate 42. This back plate 42 is integrally formed from a metal plate, like the operation engagement member 41.

The operation base 43 is disposed on the surface of the sight frame plate portion 13b facing the interior of the room in a state where it covers the slide guide plate portion 41a of the operation engagement member 41, and is molded from resin. The operation base 43 has screw insertion holes 43a and fitting recesses 43b at both the upper and lower ends, and an upper locking hook portion 43c is provided in a portion that is approximately in the center in the vertical direction. The screw insertion hole 43a is a through hole formed in a long hole shape provided in a portion corresponding to the guide hole 41d of the operation engagement member 41. The fitting recess 43b is a recess that allows the fitting plate portion 41e of the slide guide plate portion 41a to be fitted when the operation base 43 is opposed to the slide guide plate portion 41a with the screw insertion hole 43a facing the guide hole 41d. The upper locking hook portion 43c protrudes from the inner periphery of the surface of the operation base 43 that faces the outside of the room in a forward direction toward the outside of the room, and then protrudes in both the upward and downward directions.

The back plate cover 44 is disposed on the exterior facing surface of the frame plate portion 13b, covering the back plate 42 on the inner periphery side of the cover plate portion 41b, and is molded from resin, like the operation base 43. The back plate cover 44 is provided with a lower locking hook portion 44a and fitting protrusions 44b at both the upper and lower ends. The lower locking hook portion 44a protrudes from the inner periphery of the surface of the back plate cover 44 facing the interior of the room in the expected direction and then bends downward, and is formed in a portion lower than the upper locking hook portion 43c of the operation base 43. The fitting protrusion 44b fits into the fitting groove 42b of the back plate 42 when it is superimposed on the back plate 42, thereby supporting the back plate cover 44 on the back plate 42. In addition, the back panel cover 44 also has a lower hook portion 44a on the upper part, which is symmetrical to the lower hook portion 44a. This upper lower hook portion 44a is used when the operation unit 40 is installed on the vertical frame 14 located on the left side of the frame body 10 when viewed from the inside of the room.

As shown in Figures 7, 9 to 11, the outer surface 44c of the back panel cover 44 facing the outside of the room is almost flat along the find direction, and has two guide ribs 44d at each of the upper and lower ends. The guide ribs 44d are protrusions extending along the sliding direction of the screen door 30 and are molded integrally with the back panel cover 44. Each guide rib 44d has an inclined guide surface 44e and a find abutment surface 44f. The inclined guide surface 44e is a portion that is inclined so that it gradually protrudes outside the room from the inner circumference side toward the outer circumference side. In the example shown in the figure, the inclined guide surface 44e is formed so that the angle α from the outer surface 44c of the back panel cover 44 is an acute angle. The find abutment surface 44f is a portion that extends along the find direction and is provided so as to be continuous with the portion of the inclined guide surface 44e that protrudes most outside the room. This sight abutment surface 44f is set so that when the back panel cover 44 is attached to the sight frame plate portion 13b of the right vertical frame 13, the dimension to the surface of the engagement plate portion 41c facing the outside of the room is a distance D.

To attach the operation unit 40 having the above-mentioned configuration to the right vertical frame 13, two screw through holes 13c, one above and one below, are formed in advance in the sight frame plate portion 13b at the position where the operation unit 40 is to be attached. The screw through holes 13c are large enough to pass through the shafts 45a of the mounting screws 45 that screw into the screw holes 42a of the back plate 42, and are provided on the edge of the inner circumference of the sight frame plate portion 13b at the same pitch as the screw holes 42a.

For this sight frame plate part 13b, first, the back plate 42 is overlapped on the sight surface facing the outside of the room, and then the operation engagement member 41 is placed on the right vertical frame 13 with the sight frame plate part 13b and the back plate 42 placed between the slide guide plate part 41a and the connecting plate part 41f. From this state, the operation engagement member 41 and the operation base 43 can be attached to the sight frame plate part 13b of the right vertical frame 13 by screwing the mounting screw 45 into the screw hole 42a of the back plate 42 through the screw insertion hole 43a of the operation base 43, the guide hole 41d of the slide guide plate part 41a, and the screw through hole 13c of the sight frame plate part 13b. These operation engagement member 41 and operation base 43 can be moved up and down relative to the right vertical frame 13 by moving up and down within the range of the screw insertion hole 43a and the guide hole 41d relative to the mounting screw 45. In this embodiment, a tension coil spring 46 is provided between the lower locking hook portion 44a of the back panel cover 44 attached to the back panel 42 and the upper locking hook portion 43c of the operation base 43, and the operation engagement member 41 and the operation base 43 are constantly biased downward by the spring force of this tension coil spring 46. To attach the back panel cover 44 to the back panel 42, the fitting protrusions 44b are fitted into the fitting grooves 42b, respectively. In the operation unit 40 attached to the right vertical frame 13 as described above, when the screen door 30 is slid close to the right vertical frame 13, the engagement plate portion 41c is positioned between the two sight frame plate portions 34b of the right screen vertical frame 34.

On the other hand, as shown in Figures 12 to 14, the receiving member 51 of the latch unit 50 is a block-shaped, approximately rectangular prism extending vertically, and has guide pins 51a on both the side surface located on the inside of the room and the side surface located on the outside of the room, and a spring support pin 51b on the bottom surface. The guide pins 51a are cylindrical and extend along the projection direction, and are provided on the same axis, protruding from the side surface on the inside of the room and the side surface on the outside of the room. The spring support pins 51b are cylindrical and extend downwards in a substantially vertical direction. The receiving member 51 also has a receiving protrusion 51c on the top surface. The receiving protrusion 51c protrudes upward from the edge located on the outer periphery of the receiving member 51, and has a receiving surface 51d on the inner periphery. The receiving surface portion 51d is a flat surface that extends in the projection direction along a substantially vertical direction, and is configured to have a larger projection dimension than the engagement plate portion 41c. The receiving member 51 described above is integrally molded by die casting using a metal material such as an aluminum alloy.

The protective cap 52 is a resin member provided to cover the outer surface of the receiving member 51. In the illustrated example, the protective cap 52 is configured to cover the receiving member 51 with the guide pin portion 51a, the spring support pin portion 51b, and the receiving surface portion 51d exposed to the outside. The protective cap 52 is provided with a receiving side guide surface 52a in the portion covering the outer periphery of the receiving protrusion 51c. The receiving side guide surface 52a is a flat surface that is inclined with respect to the longitudinal direction B of the right screen vertical frame 34 so that it gradually becomes closer to the inner periphery as it goes upward.

The latch case 53 accommodates the receiving member 51 with the protective cap 52 attached so that it can move in the vertical direction, and is composed of an outer peripheral base plate portion 53a, two side plate portions 53b, two peripheral plate portions 53c, and a bottom plate portion 53d. The outer peripheral base plate portion 53a is a substantially rectangular flat plate that extends in the vertical direction. An insertion opening 53e with an open upper end is provided in the upper half of the outer peripheral base plate portion 53a. The insertion opening 53e is for exposing the receiving side guide surface 52a of the protective cap 52 to the outside of the latch case 53, and is configured to have a larger dimension in the vertical direction than the engagement plate portion 41c. The insertion opening 53e is provided so that when the latch unit 50 is attached in a position on the right screen vertical frame 34, the dimension d between the opening edge located on the outside of the room and the surface of the right screen vertical frame 34 facing the room is equal to or greater than the above-mentioned distance D (the dimension between the surface of the surface abutment 44f and the surface of the engagement plate 41c facing the outside of the room). The side plate 53b extends from both side edges of the outer peripheral base plate 53a toward the inner peripheral side so as to be almost parallel to each other, and forms a storage space for the receiving member 51 between the outer peripheral base plate 53a. The distance between the outer surfaces of these two side plate parts 53b is set so that they can be fitted between the two surface frame plate parts 34b of the right screen vertical frame 34. The side plate parts 53b are each formed with a guide groove 53f along the top and bottom, and a locking protrusion 53g is formed on each outer surface. The guide groove 53f is formed to a width that allows the guide pin portion 51a of the receiving member 51 to pass through, and functions to guide the vertical movement of the receiving member 51 relative to the side plate portion 53b in cooperation with the guide pin portion 51a. The locking projection 53g abuts against the locking surface 34c provided on the side plate portion 53b when the latch case 53 is disposed between the two sight frame plate portions 34b of the right screen vertical frame 34. The peripheral plate portions 53c extend in a curved manner so as to gradually approach each other from a portion of the outer peripheral base plate portion 53a that is lower than the side plate portion 53b toward the outer periphery, and are disposed on a circumference centered on the axis of the spring support pin portion 51b when the receiving member 51 is disposed between the side plate portions 53b. The bottom plate portion 53d extends almost horizontally from the lower edge of the outer substrate portion 53a toward the inner circumference, then bends almost vertically downward, and has a screw insertion hole 53h in the downward extending portion.

To attach the latch unit 50 having the above-mentioned configuration to the right screen vertical frame 34, the receiving member 51 is accommodated between the side plate portion 53b of the latch case 53 with the protective cap 52 attached in advance, and the guide pin portion 51a is placed in the guide groove 53f, so that it can be moved up and down relative to the latch case 53. In this embodiment, a compression coil spring 54 is provided between the lower surface of the receiving member 51 and the bottom plate portion 53d of the latch case 53, and the receiving member 51 is constantly biased upward relative to the latch case 53 by the spring force of this compression coil spring 54. The compression coil spring 54 is capable of biasing the receiving member 51 without falling off by arranging the spring support pin portion 51b of the receiving member 51 at the upper end and the lower end between the peripheral plate portion 53c and the outer peripheral base plate portion 53a of the latch case 53. From this state, the latch case 53 is placed between the two sight frame plate parts 34b of the right screen vertical frame 34, and the mounting screw 55 is screwed into the frame base part 34a through the screw insertion hole 53h of the bottom plate part 53d, so that the latch unit 50 can be attached to the right screen vertical frame 34. In the latch unit 50 attached to the right screen vertical frame 34, the locking protrusion 53g provided on the side plate part 53b abuts against the locking surface 34c of the side plate part 53b, preventing the latch case 53 from moving toward the outer periphery of the right screen vertical frame 34. The height at which the latch unit 50 is attached is set so that when the screen 30 is slid close to the right vertical frame 13, the engagement guide surface 41j of the lower engagement protrusion part 41h provided on the engagement plate part 41c abuts against the receiving side guide surface 52a of the protective cap 52.

According to the fittings provided with the movement restriction device 1 described above, when the screen door 30 is slid from the state shown in FIG. 15(a) toward the right vertical frame 13, the engagement guide surface 41j of the lower engagement protrusion 41h provided on the engagement plate 41c comes into contact with the receiving guide surface 52a of the protective cap 52, as shown in FIG. 15(b). When the screen door 30 is further slid from this state toward the right vertical frame 13, as shown in FIG. 15(c), the inclination of the engagement guide surface 41j and the receiving guide surface 52a causes the operation engagement member 41 and the receiving member 51 to move upward and downward as appropriate so as to move relatively apart against the spring forces of the tension coil spring 46 and the compression coil spring 54. In this embodiment, the spring constant of the compression coil spring 54 is set to be larger than that of the tension coil spring 46, so that the operation engagement member 41 of the operation unit 40 moves upward.

When the screen door 30 slides further and the engagement guide surface 41j and the receiving guide surface 52a are released from their abutment state, as shown in FIG. 15(d), the spring forces of the tension coil spring 46 and compression coil spring 54 move the operation engagement member 41 and the receiving member 51 in a direction relatively closer to each other in the vertical direction, so that the engagement surface portion 41k and the receiving surface portion 51d face each other (closed position of the screen door 30). Therefore, from this state, it is possible to prevent the screen door 30 from accidentally sliding in the opening direction.

To slide the screen door 30 in the opening direction from the above-mentioned state, the operation base 43 is moved upward relative to the right vertical frame 13 against the spring force of the tension coil spring 46, and the operation engagement member 41 moves upward relative to the receiving member 51, so that the receiving surface portion 51d of the receiving member 51 and the engagement surface portion 41k of the operation engagement member 41 do not face each other. Therefore, if an operating force is applied to the screen door 30 in this state, it is possible to slide the screen door 30 in the opening direction relative to the frame body 10.

Here, as shown in Fig. 16(a), when the central portion of the right screen stile 34 is offset toward the interior of the room relative to the frame 10 and the visible surface of the right screen stile 34 facing the interior of the room is located inside the room relative to the exterior surface 44c of the back panel cover 44 facing the exterior, even if the screen 30 is slid in the closing direction, as shown by the two-dot chain line in Fig. 16(a), the engagement plate portion 41c will abut against the outer peripheral base plate portion 53a of the latch case 53, making it difficult to abut the lower engagement protrusion portion 41h of the engagement plate portion 41c against the receiving guide surface 52a. However, in the above-mentioned fitting, since the outer surface 44c of the back panel cover 44 has a guide rib 44d, there is no concern that the above-mentioned problem will occur. That is, when the screen door 30 is slid in the closing direction even when the right screen door vertical frame 34 is deviated toward the inside of the room, as shown in Figures 16(b) and 16(c), the sight frame plate portion 34b located on the inside of the right screen door vertical frame 34 abuts against the inclined guide surface 44e of the guide rib 44d, and the position of the right screen door vertical frame 34 is corrected to the outside of the room by this inclination action, and reaches a position where it abuts against the sight abutment surface 44f of the guide rib 44d. As a result, the lower engagement protrusion portion 41h of the engagement plate portion 41c is guided to the insertion opening 53e and abuts against the receiving side guide surface 52a, and as shown in Figure 16(d), the engagement surface portion 41k and the receiving surface portion 51d face each other.

In the above embodiment, the screen door 30 is used as an example of the shoji screen, but the present invention is not limited to the screen door 30. Although the shoji screen is exemplified as sliding in the left-right direction, the present invention can also be applied to fittings that move up and down. Furthermore, the movement limiting device 1 is provided between the right-side vertical frame 13 and the right-side screen door vertical frame 34 when viewed from the inside of the room, but it is also possible to provide the movement limiting device 1 between the left-side vertical frame 12 and the left-side screen door vertical frame 35. The movement limiting device 1 to be applied is not limited to that in the embodiment, and may be any device in which the engaging member and the receiving member engage with each other, such as one in which the protective cap 52 is not required. Furthermore, the engaging member is provided on the frame body, while the receiving member is provided on the shoji screen, but the opposite is also possible.

In the above-described embodiment, the guide rib 44d is used as the positioning guide, which has the advantage of reducing the contact area when opening and closing the shoji screen and preventing an increase in the operating force, but it is not necessary to use a rib to form the positioning guide. Furthermore, the positioning guide is configured to have a sight abutment surface 44f, which makes it possible to prevent rattling in the expected direction when the shoji screen is placed in the closed position, but it is not necessary to have a sight abutment surface. Furthermore, the positioning guide is provided in the components of the movement restriction device 1, but the positioning guide may be provided in the frame or the shoji screen as a separate member from the movement restriction device 1.

As described above, the movement limiting device of the present invention comprises an engaging member attached to either a frame body or a shoji screen arranged to be movably relative to the frame body, and a receiving member attached to the other of the frame body or the shoji screen, and is a movement limiting device that restricts movement of the shoji screen in the opening direction relative to the frame body by engaging the engaging member and the receiving member with each other when the shoji screen is placed in the closed position, and is characterized in that one of the frame body or the shoji screen is provided with a positioning guide that abuts against the other when the shoji screen moves toward the closed position, thereby positioning the shoji screen in the forward direction relative to the frame body.
According to this invention, when the shoji screen is placed in the closed position, the position of the shoji screen in the projected direction relative to the frame body is determined by the positioning guide, so that even if the position of the shoji screen in the projected direction relative to the frame body is misaligned, this can be corrected, and by moving the shoji screen to the closed position, the engaging member can be securely engaged with the receiving member.

Furthermore, the present invention is characterized in that, in the above-mentioned movement restriction device, the positioning guide has an inclined guide surface whose position in the projection direction gradually changes relative to the movement direction of the shoji screen.
According to this invention, the position of the shoji screen can be smoothly corrected by the inclined guide surface.

The present invention is also characterized in that, in the above-mentioned movement restriction device, the positioning guide extends along the sight direction and has a sight abutment surface that is continuous with the inclined guide surface, and when the shoji screen moves toward the closed position, it abuts against either the frame body or the shoji screen in the order of the inclined guide surface and the sight abutment surface.
According to this invention, it is possible to prevent the shoji screen from rattling in the forward direction when the screen is placed in the closed position.

Furthermore, the present invention is characterized in that, in the movement restriction device described above, the engagement member includes an engagement cover body, and the positioning guide is integrally provided on an outer surface of the engagement cover body.
According to this invention, since the positioning guide is provided integrally with the engaging cover body, there is no risk of an increase in the number of parts.

Furthermore, the present invention is characterized in that, in the above-mentioned movement restriction device, the positioning guide is composed of a plurality of guide ribs extending along the movement direction of the screen.
According to this invention, the contact area when opening and closing the shoji screen can be reduced.

In addition, the building fixture of the present invention is characterized in that the engaging member of the above-mentioned movement limiting device is provided on a shoji shape material that constitutes the shoji, and the receiving member is provided on a frame shape material that constitutes the frame body.
According to this invention, the movement of the shoji screen in the opening direction can be restricted by engaging the engaging member provided on the shoji screen with the receiving member provided on the frame body.

1 Movement restriction device, 10 Frame body, 13 Right vertical frame, 30 Screen door, 34 Right screen door vertical frame, 40 Operation unit, 41 Operation engagement member, 44 Back plate cover, 44c Outer surface, 44d Guide rib, 44e Slanted guide surface, 44f Spot abutment surface, 51 Receiving member

Claims (6)

A movement restriction device that includes an engagement member attached to one of a frame body and a screen that is arranged movably relative to the frame body, and a receiving member attached to the other of the frame body and the screen, and that restricts movement of the screen in an opening direction relative to the frame body by engaging the engagement member and the receiving member with each other when the screen is placed in a closed position,
A movement restriction device characterized in that a positioning guide is provided on either the frame body or the shoji screen, which abuts against the other when the shoji screen moves toward the closed position, thereby positioning the shoji screen in the forward direction relative to the frame body. The movement restriction device according to claim 1, characterized in that the positioning guide has an inclined guide surface whose position in the projection direction gradually changes relative to the movement direction of the shoji screen. The movement restriction device according to claim 2, characterized in that the positioning guide extends along the sight direction and has a sight abutment surface that is continuous with the inclined guide surface, and when the screen moves toward the closed position, the inclined guide surface and the sight abutment surface abut against either the frame body or the screen, in that order. The engagement member includes an engagement cover body,
2. The movement limiting device according to claim 1, wherein the positioning guide is integrally provided on an outer surface of the engaging cover body. The movement restriction device according to claim 4, characterized in that the positioning guide is composed of multiple guide ribs extending along the movement direction of the screen. A fitting characterized in that the engagement member of the movement restriction device described in any one of claims 1 to 5 is provided on a shoji shape material that constitutes the shoji, and the receiving member is provided on a frame shape material that constitutes the frame body.

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