Fitting

Abstract

To improve quality of appearance and to ensure a reliable operation of an opening restriction device.SOLUTION: A fitting comprises: a frame body 10; and an inner sash 20A installed slidably relative to the frame body 10. An opening restriction device 30 that restricts an opening width of the frame body 10 is provided between a vertical frame 13 of the frame body 10 and a door end stile 23 of the inner sash 20A which become adjacent to each other when the inner sash 20A is arranged in a closing position. The opening restriction device 30 including an arm member 33 provided in the vertical frame 13 via a base 31 rotatably, and a pedestal member 32 provided in the door end stile 23, restricts a separation distance between the vertical frame 13 and the door end stile 23 when an engaging pin 35 provided in a tip part of the arm member 33 engages with an arm guide plate part 32c via a slit 32d provided in the pedestal member 32. The arm member 33 and the pedestal member 32 are provided in a portion further outdoors than an aspect face facing indoors of an inner-stile aspect wall part 23d provided in the door end stile 23.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fitting in which a sliding screen is slidably arranged relative to a frame, such as a single-sliding window or a double-sliding window. [Background technology]

[0002] Some single-sliding windows and double-sliding windows are equipped with an opening limiting device that limits the opening width of the frame. For example, in a double-sliding window, an arm member is rotatably arranged via a base on the vertical frame that is the meeting point of the outer screen, and a hook member is provided on the vertical frame that is the meeting point of the inner screen. A slit is provided along the length of the arm member, and an engagement piece that can engage with the slit is provided on the hook member. In this fitting, when the outer screen and the inner screen are respectively arranged in the closed position, the engagement piece can be detachably engaged with the arm member through the slit. When the outer screen and the inner screen are slid relatively with the engagement piece engaged with the arm member, the engagement piece moves through the slit and the arm member rotates appropriately, and the engagement piece eventually comes into contact with the end of the slit. After the engagement piece comes into contact with the end of the slit, the outer screen and the inner screen cannot be slid relatively, and the opening width of the frame body is limited (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-62783 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned fittings, the arm member and hook member are exposed to the outside of the vertical frame, which is not necessarily desirable in terms of appearance quality. In addition, the exposed arm member and hook member may be subjected to external forces, and if they are deformed or damaged, the operation of the opening limiting device may be impaired.

[0005] In view of the above-mentioned circumstances, the present invention aims to provide a fitting that can improve the appearance quality and ensure reliable operation of an opening limiting device. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the fitting of the present invention comprises a frame body and a shoji screen arranged to be slidable relative to the frame body, and an opening limiting device is provided between the frame material of the frame body and the frame material of the shoji screen, which are adjacent to each other when the shoji screen is placed in a closed position, to limit the opening width of the frame body, and the opening limiting device comprises an arm member rotatably attached via a base to one of the frame material or the frame material, and a base member attached to the other of the frame material or the frame material, and the tip of the arm member engages with the base member to limit the separation distance between the frame material and the frame material, and is characterized in that the arm member and the base member are arranged on the outside of the visible surface of the frame material facing the interior of the room. Effect of the Invention

[0007] According to the present invention, since the arm member and the base member are disposed on the outside of the visible surface of the frame member that faces the room, it is difficult to see these arm members and base members from the inside of the room when the screen is closed, which is advantageous in terms of appearance quality. Moreover, there is no concern about the application of external force, and the operation of the opening limiting device can be ensured even after long-term use. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a fitting according to an embodiment of the present invention as viewed from the inside of a room. [Diagram 2] FIG. 2 is a cross-sectional view of the fitting shown in FIG. 1. [Diagram 3] 2 shows the main parts of the fitting shown in FIG. 1, where (a) is a cross-sectional view of the frame material, and (b) is a cross-sectional view of the frame material. [Figure 4] 2A is an exploded perspective view of the frame material and the base member and operating member of the opening limiting device, and FIG. 2B is an exploded perspective view of the frame material and arm member. FIG. [Diagram 5] 2A and 2B show the main parts of the fitting shown in FIG. 1, where FIG. 2A is a perspective view of the base member and the operating member attached to the frame material, and FIG. 2B is a perspective view of the arm member attached to the frame material. [Figure 6] This is a cross-sectional view of the interior door of the fitting shown in Figure 1 sliding in the opening direction without being restricted by the opening restriction device. [Figure 7] This is a view from inside the room of the main parts of the fitting shown in Figure 1 when the inner sash slides in the opening direction without being restricted by the opening restriction device. [Figure 8] The main parts of the fitting shown in Figure 1 are seen from the inside of the room, where (a) shows the state in which the inner screen has been slid to the closed position, causing the engagement pin of the arm member to abut on the inclined surface of the operating piece, and (b) shows the state in which the inner screen has been moved from the (a) position to the closed position. [Figure 9] The main parts of the fitting shown in Figure 1 are seen from inside the room, where (a) shows the inner screen in the closed position, and (b) shows the inner screen slid open from the position shown in (a). [Figure 10] 2 is a cross-sectional view of the fitting shown in FIG. 1 in a state where the arm member of the opening limiting device is engaged with the base member and the inner sash is slid in the opening direction. [Figure 11] The main parts of the fitting shown in Figure 1 are seen from the inside of the room, where (a) shows the inner screen being placed in the closed position with the operating member moved downward, and (b) shows the inner screen being slid in the opening direction while maintaining the position of (a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A preferred embodiment of the fittings according to the present invention will be described in detail below with reference to the attached drawings. For convenience, the terms "visible direction" and "visible direction" may be used below. The "visible direction" is the direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the visible direction may be called a "visible surface." The "visible direction" is the direction along the top and bottom perpendicular to the visible direction in the case of a bottom frame or the like that extends along the horizontal direction. In the case of a vertical frame or the like that extends along the vertical direction, the horizontal direction perpendicular to the visible direction is called the "visible direction." A surface along the visible direction may be called a "visible surface."

[0010] 1 and 2 show a fitting according to an embodiment of the present invention. The fitting shown here is called a sliding window, which comprises a frame 10, and an inner screen 20A on the indoor side and an outer screen 20B on the outdoor side, which are arranged so as to be slidable left and right on the frame 10. The frame 10 is constructed by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14 on all four sides. The frame materials 11, 12, 13, 14 that make up the frame 10 are extruded shapes formed from metal such as aluminum alloy or resin, and each is constructed so that the entire length along the longitudinal direction has a substantially uniform cross-sectional shape.

[0011] The inner screen 20A is constructed by assembling the upper frame 21, the lower frame 22, and the left and right vertical frames 23, 24 all around, and attaching a rectangular panel 25 to the part surrounded by these frame materials 21, 22, 23, 24. Similarly, the outer screen 20B is constructed by assembling the upper frame 21, the lower frame 22, and the left and right vertical frames 23, 24 all around, and attaching a rectangular panel 25 to the part surrounded by these frame materials 21, 22, 23, 24. The frame materials 21, 22, 23, 24 are extruded shapes formed from metals such as aluminum alloys or resins, and are constructed so that the cross-sectional shape of each part is approximately uniform over the entire length along the longitudinal direction. In the illustrated example, an inner screen 20A is arranged on the right side of the frame body 10 when viewed from inside the room, and an outer screen 20B is arranged on the left side, and the vertical frame 24 located on the left side of the inner screen 20A and the vertical frame 24 located on the right side of the outer screen 20B are arranged so that they overlap each other in the forward direction, in other words, when each screen 20A, 20B is arranged in the closed position, the inner screen 20A and the outer screen 20B are configured so that the opening of the frame body 10 can be closed. The panel 25 is a double-glazed panel consisting of two sheets of glass 25b, 25c laminated with a spacer 25a between them.

[0012] When each of the shoji screens 20A, 20B is placed in the closed position, an individual opening limiting device 30 is provided between the vertical frame located on the right side of the inner shoji screen 20A (hereinafter, when distinguished, it is called the door end frame 23) and the adjacent vertical frame 13, and between the vertical frame located on the left side of the outer shoji screen 20B (hereinafter, when distinguished, it is called the door end frame 23) and the adjacent vertical frame 14. Below, the configuration of the opening limiting device 30 as well as the door end frame 23 and the vertical frames 13, 14 will be described in detail, and the characteristic parts of the present invention will also be explained. The door end frame 23, the vertical frames 13, 14, and the opening limiting device 30 are configured to be approximately symmetrical to each other. For this reason, the following will describe the end frame 23, vertical frame 13, and the opening limiting device 30 between them of the inner sash 20A, and will only describe the different parts of the end frame 23, vertical frame 14, and the opening limiting device 30 between them of the outer sash 20B, with the same reference numerals being used for the common parts. For convenience, the respective directions of the components of the opening limiting device 30 will be specified by the position when attached to the end frame 23 and vertical frames 13, 14.

[0013] As shown in FIG. 3(a), the door end frame 23 has a frame base 23a, a panel support wall 23b, a shim mounting groove 23c, a frame inner sight wall 23d, and a frame outer sight wall 23e. The frame base 23a has a cross section that is substantially rectangular and hollow. The panel support wall 23b protrudes from the interior edge of the inner periphery of the frame base 23a toward the interior. The shim mounting groove 23c is a recess provided in the exterior edge of the inner periphery of the frame base 23a. A shim 26 that holds the edge of the panel 25 between the panel support wall 23b and the shim mounting groove 23c can be detachably mounted. The frame inner sight wall 23d and the frame outer sight wall 23e protrude from both side edges of the frame base 23a toward the outer periphery so as to face each other, and form a frame side storage groove 23f between them. In the illustrated example, the face material support wall 23b, the frame inner sight wall 23d, and the frame outer sight wall 23e are each hollow.

[0014] As shown in FIG. 3(b), the vertical frame 13 has a frame base 13a, an inner wall (frame sight wall) 13b, an outer wall (frame sight wall) 13c, and a partition wall (frame sight wall) 13d. The frame base 13a has a hollow shape with a substantially rectangular cross section. In the illustrated example, the frame base 13a is configured such that the dimension along the sight direction is larger than the dimension along the sight direction. The inner wall 13b, the outer wall 13c, and the partition wall 13d each protrude from the sight surface on the inner periphery of the frame base 13a toward the inner periphery. The inner wall 13b is provided on the inner periphery side from the edge of the frame base 13a that faces the room inside, and the outer wall 13c is provided on the edge of the frame base 13a that faces the room outside. The partition wall portion 13d is provided at a portion that is approximately halfway between the inner wall portion 13b and the outer wall portion 13c. The inner wall portion 13b, the outer wall portion 13c, and the partition wall portion 13d have approximately the same protruding dimensions from the frame base portion 13a. The outer wall portion 13c is configured to be a thin plate, while the inner wall portion 13b and the partition wall portion 13d are configured to be hollow. The plate thickness dimension of the partition wall portion 13d along the projection direction is set to be larger than that of the inner wall portion 13b.

[0015] In the vertical frame 13 located on the right side as viewed from the inside of the room, a frame-side storage groove 13e is formed between the inner wall portion 13b and the partition wall portion 13d. In the vertical frame 14 located on the left side as viewed from the inside of the room, a frame-side storage groove 13e is formed between the partition wall portion 13d and the outer wall portion 13c. These frame-side storage grooves 13e are configured so that the dimension along the projection direction is larger than the dimension along the projection direction of the door end frame 23, and when the inner shoji 20A and the outer shoji 20B are placed in their respective closed positions, it is possible to partially accommodate the part located on the outer periphery side of the door end frame 23. The reference numeral 15 in the figure denotes a stopper member attached to the frame-side storage groove 13e at the part that becomes the lower end of each of the vertical frames 13 and 14. In the illustrated example, a stopper member 15 having a wide base plate portion 15a and a narrow front plate portion 15b is applied. That is, the stopper member 15 is configured so that the dimension along the projection direction of the base plate portion 15a is approximately the same as that of the door end frame 23, and the dimension along the projection direction of the front plate portion 15b is configured so that it can be inserted into the frame side storage groove 23f. When the inner and outer frames 20A and 20B are slid toward the closed position, the front plate portion 15b of the stopper member 15 is inserted into the frame side storage groove 23f, and the end faces on the outer periphery of the frame inner sight wall portion 23d and the end faces on the outer periphery of the frame outer sight wall portion 23e each abut against the base plate portion 15a of the stopper member 15. Therefore, with this fitting, it is possible to arrange the inner and outer frames 20A and 20B in their respective closed positions without causing the door end frame 23 to collide with the vertical frames 13 and 14.

[0016] The opening limiting device 30 limits the opening width of the frame body 10 by individually regulating the sliding of the inner screen 20A and the outer screen 20B, and is configured with a base 31 provided on the vertical frame 13 and a base member 32 provided on the door end frame 23, as shown in Figures 4 and 5.

[0017] The base 31 has a flat support plate 31a and a base mounting plate 31b that protrudes from the edge of the support plate 31a at an almost right angle toward the inside of the room. The width dimension of the support plate 31a along the left and right sides is configured to be larger than the protruding dimension of the inner wall 13b provided on the vertical frame 13. The support plate 31a has an arm member 33 provided at the upper corner and a locking protrusion 34 provided at the lower edge. The arm member 33 is flat with a uniform width and is rotatably supported on the surface of the support plate 31a facing the inside of the room via the base end by a support shaft 33a along the projection direction. An engagement pin 35 is provided at the tip of the arm member 33. The engagement pin 35 has a cylindrical shape with a large diameter at the tip 35b relative to the base end 35a, and protrudes from the surface of the arm member 33 facing the interior of the room toward the interior side with its axis aligned along the projection direction. The locking protrusion 34 protrudes from the support plate portion 31a toward the interior of the room, and then bends downward at a substantially right angle. This locking protrusion 34 is provided so as to face close to the side surface located on the outer periphery of the arm member 33 when the arm member 33 hangs down substantially vertically from the support shaft 33a. Therefore, even when an external force is applied to the arm member 33, the locking protrusion 34 abuts against the arm member 33, thereby restricting the tip of the arm member 33 from rotating toward the outer periphery.

[0018] The base 31 having the above configuration is attached to the frame side accommodation groove 13e at a portion corresponding to the stile side accommodation groove 23f by screwing the screw member S1 to the frame base 13a of the vertical frame 13 via the base mounting plate portion 31b with the support plate portion 31a aligned along the front direction and the base mounting plate portion 31b protruding toward the room inside. That is, the base 31 is attached to the frame side accommodation groove 13e of the vertical frame 13 with the support shaft 33a of the arm member 33 aligned along the front direction and the engagement pin 35 protruding from the arm member 33 toward the room inside. When the shoji screen 20A is placed in the closed position, a part of the support plate portion 31a and the hanging arm member 33 are respectively accommodated in the stile side accommodation groove 23f. A reinforcing member R is disposed in the hollow portion of the frame base 13a into which the screw member S1 is screwed.

[0019] The base member 32 has a flat base mounting plate 32a, an operation guide plate 32b protruding from the edge of the base mounting plate 32a located on the room side toward the inner circumference in a direction substantially perpendicular to the room side, and an arm guide plate 32c provided at the upper end of the operation guide plate 32b. The width dimension of the operation guide plate 32b in the left-right direction is slightly larger than the dimension of the inner frame sight wall 23d in the sight direction, and is set so that it can be accommodated in the accommodation space C formed between the frame side accommodation groove 13e and the frame side accommodation groove 23f of the vertical frame 13 when the shoji 20A is placed in the closed position. The arm guide plate 32c protrudes from the upper end of the operation guide plate 32b toward the outside of the room and then bends upward, thereby extending vertically at a position protruding further outside than the operation guide plate 32b. The arm guide plate portion 32c has an edge portion located on the inner periphery side coinciding with the operation guide plate portion 32b, and is configured to be slightly narrower than the operation guide plate portion 32b.

[0020] A series of slits 32d are provided in the operation guide plate portion 32b and the arm guide plate portion 32c. The slits 32d extend upwards almost vertically from the upper end of the operation guide plate portion 32b. The upper end of the slits 32d is closed within the upper end of the arm guide plate portion 32c. The lower end of the slits 32d is open downwards at the lower end of the arm guide plate portion 32c.

[0021] As is clear from the figure, the width of the slit 32d at the lower end of the arm guide plate 32c and the upper end of the operation guide plate 32b is wider than the width of the portion extending upward from the lower end. More specifically, the lower end of the slit 32d is configured to be wider than the tip 35b of the engagement pin 35 provided on the arm member 33. On the other hand, the upper end of the slit 32d is configured to be wider than the base end 35a of the engagement pin 35 and narrower than the tip 35b of the engagement pin 35. In other words, by inserting the engagement pin 35 from the lower open end 32e into the slit 32d, it is possible to position the thick tip 35b on the surface side of the arm guide plate 32c facing the room. The engagement pin 35 inserted into the slit 32d can be moved upward along the slit 32d to the arm guide plate 32c, but cannot be moved out of the slit 32d. By placing the engagement pin 35 again at the lower end of the arm guide plate portion 32c, it becomes possible to disengage the engagement pin 35 from the slit 32d.

[0022] The base member 32 is attached to the frame-side storage groove 23f by screwing the screw member S2 into the frame base 23a of the door end frame 23 via the base mounting plate 32a with the operation guide plate 32b abutting against the surface located on the outside of the frame inner sight wall 23d. When the shoji 20A is placed in the closed position, the base member 32 and the base 31 and arm member 33 provided on the vertical frame 13 are all stored in the storage space C. At this time, the surface of the arm guide plate 32c facing the outside of the room is close to the surface of the arm member 33 facing the room, and the engagement pin 35 of the hanging arm member 33 is located at a position that is a downward extension of the open end 32e with respect to the slit 32d.

[0023] The above-mentioned base member 32 is provided with an operating piece 36 on the surface of the operation guide plate portion 32b facing the outside of the room. The operating piece 36 has approximately the same width as the operation guide plate portion 32b, and is disposed so as to be vertically slidable relative to the operation guide plate portion 32b. A spring member (biasing member) 37 is provided between the operating piece 36 and the base member 32, which constantly biases the operating piece 36 upward relative to the base member 32. The operating piece 36 biased by the spring member 37 has its upper end surface abutting against a step portion 32f formed between the operation guide plate portion 32b and the arm guide plate portion 32c, thereby defining its upper limit position.

[0024] The operating piece 36 is provided with a locking surface 36a and an inclined surface 36b. The locking surface 36a is formed on the edge of the outer periphery of the notch 36c by providing a notch 36c at the upper end of the operating piece 36 on the extension of the slit 32d, and extends vertically. The inclined surface 36b is formed on the outer periphery of the upper end of the operating piece 36, and is inclined gradually inward toward the upper side. The locking surface 36a and the inclined surface 36b are provided at a position where they can come into contact with the base end 35a of the engagement pin 35 when the screen 20A is slid with the arm member 33 hanging down and the operating piece 36 positioned at the upper limit position.

[0025] In addition, the operating piece 36 is provided with an operation engagement portion 36d. The operation engagement portion 36d is connected to an operation member 38 attached to the front surface of the door end frame 23 facing the room. The operating piece 36 connected to the operation member 38 via the operation engagement portion 36d can move downward against the spring force of the spring member 37 when the operation member 38 is moved downward. When the operation member 38 moves downward, a gap is secured between the upper end of the operating piece 36 and the step portion 32f so that the engagement pin 35 can pass through.

[0026] In the fitting equipped with the above-mentioned opening restriction device 30, when the inner sash 20A is placed in the open position, as shown in Figures 6 and 7, the arm member 33 attached to the base 31 hangs down by its own weight, and the operating piece 36 attached to the base member 32 is maintained in an upward position by the spring force of the spring member 37. At this time, the base end 35a of the engagement pin 35 attached to the arm member 33 is positioned at the same height as the inclined surface 36b of the operating piece 36. Therefore, when the inner sash 20A is slid from this state toward the closed position, the base end 35a of the engagement pin 35 abuts against the inclined surface 36b of the operating piece 36, so that the operating piece 36 moves downward against the spring force of the spring member 37, as shown in Figure 8(a). When the inner screen 20A is further slid to the closed position from this state, the engagement pin 35 passes between the upper end of the operating piece 36 and the step 32f, and is positioned on an extension of the open end 32e of the slit 32d, as shown in Figure 8(b). When the engagement pin 35 is positioned facing the open end 32e of the slit 32d, the spring force of the spring member 37 moves the operating piece 36 upward, the engagement pin 35 is positioned in the notch 36c of the operating piece 36, and the base end 35a of the engagement pin 35 faces the locking surface 36a.

[0027] Here, the locking surface 36a of the operating piece 36 extends vertically along the vertical direction as described above. Therefore, when the inner sash 20A is slid in the opening direction from the state shown in Fig. 9(a), the engaging pin 35 comes into contact with the locking surface 36a, but the operating piece 36 does not move up or down. As a result, as shown in Fig. 9(b) and Fig. 10, as the door end frame 23 moves away from the vertical frame 13, the tip of the arm member 33 gradually rotates upward, so that the engaging pin 35 moves upward along the locking surface 36a and is inserted into the slit 32d of the arm guide plate portion 32c. In this state, the arm member 33 is arranged to span between the base 31 of the vertical frame 13 and the base member 32 of the door end frame 23. As a result, the arm member 33 regulates the distance of the door end frame 23 from the vertical frame 13, making it possible to restrict the open position of the inner screen 20A, i.e., the open width of the frame body 10, to within a preset dimension. When the inner screen 20A is slid toward the closed position again, the tip of the arm member 33 rotates downward, causing the engagement pin 35 to move downward through the slit 32d, and when the inner screen 20A is positioned in the closed position, the engagement pin 35 is again positioned in the notch 36c of the operating piece 36.

[0028] On the other hand, as shown in Figure 11(a), when the inner screen 20A is in the closed position, if the operating piece 36 is moved downward via the operating member 38 and the inner screen 20A is slid in the opening direction while maintaining this state, the engagement pin 35 will deviate from the base member 32 through the gap secured between the upper end of the operating piece 36 and the step portion 32f, as shown in Figure 11(b). This removes the restriction on the distance that the door end frame 23 can be separated from the vertical frame 13, making it possible to open the inner screen 20A to the fully open position.

[0029] As described above, when the inner sash 20A is placed in the closed position, it is possible to partially accommodate the part located on the outer periphery side of the door end frame 23 with respect to the frame side accommodation groove 13e. In addition, the base 31, arm member 33, pedestal member 32, and operating piece 36 constituting the opening limiting device 30 are all accommodated in the accommodation space C. Therefore, it is difficult to visually recognize any of the components of the opening limiting device 30, except for the operating member 38 operated from the outside. Therefore, as shown in FIG. 1, according to this fitting, the opening limiting device 30 does not appear to the outside, and it is possible to limit the opening width of the frame body 10 without causing a situation in which the appearance quality is impaired. In particular, in the illustrated example, the door end lock 40 is provided in a part below the opening limiting device 30 between the door end frame 23 and the vertical frame 13. Therefore, with respect to the door end lock 40, only its locking / unlocking operation part 41 appears to the outside, and there is no risk of causing a situation in which the appearance quality of the fitting is impaired. Furthermore, when the screen 20A is placed in the closed position, the base 31, arm member 33, pedestal member 32, and operating piece 36 are housed in the housing space C, eliminating the risk of external force being applied to these components. This makes it possible to prevent deformation or damage to the base 31, arm member 33, pedestal member 32, and operating piece 36, and ensures the operation of the opening restriction device 30 even after long-term use.

[0030] In the above embodiment, a sliding window is exemplified, but the same can be applied to a single sliding window. Also, a fixture with a door end lock 40 is exemplified, but a fixture with a crescent lock may be used. Furthermore, the arm member 33 is provided on the vertical frame 13, and the base member 32 is provided on the door end frame 23, but it is also possible to provide the base member 32 on the vertical frame 13 and the arm member 33 on the door end frame 23.

[0031] In addition, in the above-described embodiment, a storage groove is provided in each of the frame material and the frame material, and the opening limiting device is stored in the storage space formed between them when the screen is placed in the closed position. However, it is sufficient that the opening limiting device 30 is provided at least on the outside of the visible surface of the frame material facing the room, that is, as explained in the embodiment, on the outside of the visible surface of the frame inner visible wall portion 23d facing the room, and it does not necessarily have to be stored in the space.

[0032] Furthermore, in the above-described embodiment, an inclined surface 36b is provided on the operating piece 36, and a biasing member 37 is provided which constantly biases the operating piece 36, so that when the screen is placed in the closed position, the engagement pin 35 of the arm member 33 engages with the operating piece 36 of the base member 32 without performing a return operation; however, the present invention is not limited to this, and the arm member 33 may be engaged with the base member 32 by a return operation performed by the operator.

[0033] As described above, the building fixture of the present invention comprises a frame body and a shoji screen arranged to be slidable relative to the frame body, and an opening limiting device is provided between the frame material of the frame body and the frame material of the shoji screen, which are adjacent to each other when the shoji screen is placed in the closed position, to limit the opening width of the frame body, and the opening limiting device comprises an arm member rotatably attached via a base to one of the frame material or the frame material, and a base member attached to the other of the frame material or the frame material, and the tip of the arm member engages with the base member to limit the separation distance between the frame material and the frame material, and is characterized in that the arm member and the base member are arranged on the outside of the visible surface of the frame material facing the interior of the room. According to this invention, since the arm member and the base member are arranged on the outside of the visible surface of the frame that faces the room, it is difficult to see these arm members and base members from the inside of the room when the shoji screen is closed, which is advantageous in terms of appearance quality. Moreover, there is no concern about the application of external force, and the operation of the opening limiting device can be ensured even after long-term use.

[0034] The present invention is also characterized in that, in the above-mentioned fitting, the arm member is arranged in a hanging state from the base and has an engagement pin at its tip, the base member is provided with a slit in which the engagement pin is arranged to be slidable up and down, an operating piece arranged to be movably located at the portion located at the lower end of the slit, and a biasing member which biases the operating piece upwards, the slit has an open end at its lower end and is arranged so that the open end is located above the engagement pin when the screen is arranged in the closed position, the operating piece is positioned upward by the biasing force of the biasing member when the engagement pin is arranged opposite the open end of the slit, and the operating piece is provided with a locking surface which the engagement pin abuts against when the screen slides in the opening direction from the closed position to prevent the engagement pin from escaping from the slit, and an inclined surface which the engagement pin abuts against when the screen slides towards the closed position to move the operating piece downward against the biasing force of the biasing member to allow the engagement pin to pass through. According to this invention, when the screen is placed in the closed position, the engagement pin is maintained in a position facing the slit of the arm member. Therefore, when the screen is slid in the opening direction from the closed position without any need for a return operation, the engagement pin engages with the arm member through the slit, and there is no concern that the screen will open fully.

[0035] The present invention is also characterized in that, in the above-mentioned building fixture, the opening limiting device is movably mounted on the other of the frame material and the railing material facing the interior of the room, and is equipped with an operating member that enables the operating piece to be moved downward against the biasing force of the biasing member. According to this invention, the operating piece is moved downward via the operating member, and the screen can be slid in the opening direction while maintaining that state, thereby placing the screen in the fully open position.

[0036] The present invention is also characterized in that, in the above-mentioned building fixture, a frame side storage groove is provided on the inner circumferential surface of the frame material between the inner and outer frame sight wall portions, in which at least a part of the frame material can be stored, and a frame side storage groove is provided on the outer circumferential surface of the frame material between the frame inner sight wall portion on the room side and the frame outer sight wall portion on the room side, the arm member is provided in one of the frame side storage groove and the frame side storage groove, and the base member is provided in the other of the frame side storage groove and the frame side storage groove. According to this invention, when the screen is closed, it becomes difficult to see the arm member and base member from the outside of the room, which is further advantageous in terms of appearance quality.

[0037] The present invention is also characterized in that, in the above-mentioned building fixture, when the shoji screen is placed in the closed position, a storage space is formed by the frame side storage groove and the stile side storage groove, and the arm member and the base member are stored in the storage space. According to this invention, when the screen is closed, the arm member and base member cannot be seen from the outside of the room, which is further advantageous in terms of appearance quality.

[0038] Furthermore, the present invention is characterized in that, in the above-mentioned fitting, the arm member is provided on the frame material, and the base member is provided on the frame material. According to this invention, the above-mentioned operating member can be provided on the visible surface of the frame member facing the interior of the room, which is advantageous in terms of operability of the operating member. [Explanation of symbols]

[0039] 10 frame body, 13, 14 vertical frame, 13b inner wall portion, 13c outer wall portion, 13d partition wall portion, 13e frame side storage groove, 20A, 20B shoji screen, 23 door end frame, 23d frame inner sight wall portion, 23e frame outer sight wall portion, 23f frame side storage groove, 30 opening limiting device, 31 base, 32 pedestal member, 32c arm guide plate portion, 32d slit, 32e opening end, 32f step portion, 33 arm member, 33a support shaft, 35 engagement pin, 36 operating piece, 36a engagement surface, 36b inclined surface, 36d operation engagement portion, 37 spring member, 38 operation member, C storage space

Claims

1. A fitting comprising a frame body and a shoji screen slidably arranged on the frame body, and an opening limiting device that limits the opening width of the frame body between the frame material of the frame body and the frame material of the shoji screen that are adjacent to each other when the shoji screen is placed in a closed position, The opening limiting device comprises an arm member rotatably attached via a base to either the frame material or the frame member, and a base member attached to the other of the frame material or the frame member, and the tip of the arm member engages with the base member to limit the separation distance between the frame material and the frame member, and the arm member and base member are arranged on the outside of the visible surface of the frame member facing the interior of the room.

2. the arm member is arranged in a state of being suspended from the base, and has an engagement pin at a tip end thereof, the base member is provided with a slit in which the engagement pin is disposed so as to be slidable vertically, an operating piece disposed so as to be movable in a portion located at a lower end of the slit, and a biasing member biasing the operating piece upward, The slit has an open end at a lower end, and is provided so that the open end is located above the engagement pin when the screen is placed in a closed position, and the operating piece is located upward by the biasing force of the biasing member when the engagement pin is placed opposite the open end of the slit, The fitting as described in claim 1, characterized in that the operating piece is provided with a locking surface against which the engagement pin abuts when the screen slides in the opening direction from the closed position, preventing the engagement pin from escaping from the slit, and an inclined surface against which the engagement pin abuts when the screen slides toward the closed position, moving the operating piece downward against the biasing force of the biasing member to allow the engagement pin to pass through.

3. The opening limiting device is a fixture as described in claim 2, characterized in that it is movably mounted on the other part of the frame material or the railing material facing the room, and is equipped with an operating member that is capable of moving the operating piece downward against the biasing force of the biasing member.

4. The fixture described in claim 1, characterized in that a frame side storage groove is provided on the inner peripheral surface of the frame material between the inner and outer frame sight wall portions, in which at least a portion of the frame material can be stored, and a frame side storage groove is provided on the outer peripheral surface of the frame material between the frame inner sight wall portion on the room side and the frame outer sight wall portion on the room side, the arm member is provided in either the frame side storage groove or the frame side storage groove, and the base member is provided in the other of the frame side storage groove or the frame side storage groove.

5. The fixture described in claim 4, characterized in that when the shoji screen is placed in the closed position, a storage space is formed by the frame side storage groove and the stile side storage groove, and the arm member and the base member are stored in the storage space.

6. 2. The fixture according to claim 1, wherein the arm member is provided on the frame material, and the base member is provided on the stile.

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