Opening restriction component and fixture

Abstract

To provide an opening restriction component that can be easily equipped with a function to regulate the amount of opening of a sliding door.SOLUTION: An opening restriction component comprises: a fixed portion attached and fixed to a handle; and an engaging portion that can engage with a frame. The handle is provided on a sliding door that is rotatably supported by the frame forming an opening and can close and open the opening, and can displace with rotary operation between a closed position in which the opening is kept closed and an opened position in which the opening can be opened. The engaging portion has an opposing portion when opened, which does not face the frame in the depth direction when the handle is in the closed position and faces the frame in the depth direction with an interval when the handle is in the opened position.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an opening restriction part and fitting that restrict the opening amount of a sash screen that is rotatably supported on a frame that forms an opening. [Background technology]

[0002] Conventionally, fittings equipped with a sliding screen supported rotatably on a frame forming an opening have been known (see, for example, Patent Document 1). Such fittings include, for example, vertical sliding windows, horizontal sliding windows, inward-tilting windows, and outward-tilting windows, and the sliding screen is supported by the frame forming the opening via a fitting stay so that it can be opened and closed. The sliding screen is provided so that it can be opened and closed between a closed state and a fully open state.

[0003] Also known is a fitting that is equipped with an opening limiting device that is provided between a frame and a freely opening and closing shoji screen and that limits the opening of the shoji screen to a predetermined open position (see, for example, Patent Document 2). This opening limiting device is configured to be able to limit the opening amount of the shoji screen by engaging a restraining arm that is swingably supported on a support shaft fixed to the frame with a connecting pin that is fixed to the shoji screen. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-216203 A [Patent Document 2] JP 2017-155473 A Summary of the Invention [Problem to be solved by the invention]

[0005] Since the above-mentioned opening amount limiting device is installed between the frame and the shoji screen, when installing it on a fixture that does not have a device to limit the opening amount, it requires extensive work by a skilled worker, such as removing the shoji screen. Therefore, there was a problem that in order to equip a fixture with a function to limit the opening amount of a shoji screen, complicated and time-consuming work was required.

[0006] The present invention has been made in consideration of such problems, and its purpose is to provide an opening limiting part and fitting that can easily be equipped with the function of regulating the amount by which a shoji screen is opened. [Means for solving the problem]

[0007] The main invention for achieving this objective is an opening restriction component that is provided on a shoji screen that is rotatably supported on a frame that forms an opening and can close and open the opening, and is attached to a handle that can be displaced between a closed position in which the opening is maintained closed by rotation, and an open position in which the opening can be opened, and has a fixing part fixed to the handle and an engaging part that can engage with the frame, and the engaging part has an open-time opposing part that does not face the frame in the front direction when the handle is in the closed position, and faces the frame with a gap in the front direction when the handle is in the open position. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0008] According to the present invention, it is possible to provide opening restriction components and fixtures that can easily be equipped with the function of regulating the opening amount of a shoji screen. [Brief description of the drawings]

[0009] [Figure 1] 1 is a view showing an example of a fixture to which the opening limiting part according to the present embodiment is attached. FIG. [Diagram 2] 2 is a perspective view showing an opening limiting part and a locking member according to the embodiment of the present invention. FIG. [Diagram 3] FIG. 3(a) is a cross-sectional view showing the state of the handle when locked, FIG. 3(b) is a cross-sectional view showing the state of the handle when unlocked, and FIG. 3(c) is a cross-sectional view showing the screen when open. [Figure 4] FIG. 4(a) is a view of the opening limiting component seen from the indoor side, FIG. 4(b) is a view seen from the arrow A in FIG. 4(a), and FIG. 4(c) is a view seen from the arrow B in FIG. 4(a). [Diagram 5] FIG. 13 is a perspective view showing an opening restriction component attached to a handle. [Figure 6] Figure 6(a) is an oblique view showing the state of the opening limiting part when locked, Figure 6(b) is an oblique view showing the state of the opening limiting part when unlocked, and Figure 6(c) is an oblique view showing the state of the opening limiting part when the screen is open. [Figure 7] Figure 7(a) is a cross-sectional view showing the state of the opening limiting part when locked, Figure 7(b) is a cross-sectional view showing the state of the opening limiting part when unlocked, and Figure 7(c) is a cross-sectional view showing the state of the opening limiting part when the screen is open. [Figure 8] FIG. 8(a) is a perspective view showing a first modified example of the opening limiting component, and FIG. 8(b) is a perspective view showing a second modified example of the opening limiting component. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of an aperture limiting component of the present invention will be described with reference to the drawings. In this embodiment, an opening limiting component attached to the handle of a locking member 4 provided in a fitting for a vertical sliding window will be described as an example.

[0011] In this embodiment, the fitting 1 to which the opening restriction part is attached has, for example, a rectangular frame 2 that forms an opening 2a, and a door screen 3 that is rotatably supported by the frame 2 and can close and open the opening 2a, as shown in Fig. 1, and when the door end side of the door screen 3 is pushed out to the outdoors, the door screen 3 rotates and opens the opening 2a. The locking member 4 provided on the indoor side of the fitting 1 has a cam latch handle (hereinafter referred to as the handle) 41, and is provided on the door end frame 3a of the door screen 3. The opening restriction part 5 (Fig. 5) is removably attached to the handle 41.

[0012] In the following explanation, when the fitting 1 installed in a building is viewed from the indoor side, the direction that is up and down is referred to as the up-down direction, the direction that is left and right is referred to as the left-right direction, and the indoor / outdoor direction that is the outside direction of the plane of the shoji screen 3 is referred to as the look-through direction. Whether it is each part of the fitting 1 and the opening restriction component 5, or each member that makes up the fitting 1 is in a separate state, the directions will be specified and explained in terms of the up-down, left-right, and look-through directions in the installed state.

[0013] 2, the locking member 4 has a base body 40 having an axis (not shown) fixed to the door end frame 3a along the front direction, and a handle 41 that rotates attached to the axis. The handle 41 has a base shaft portion 41a along the axial direction, a grip portion 41b that extends from the end of the base shaft portion 41a opposite the base body 40 and is gripped by the user, and a latch portion 41c that protrudes from the end of the base shaft portion 41a on the base body 40 side.

[0014] The base shaft portion 41a and the grip portion 41b are both rod-shaped with a rectangular cross section, and are connected in a substantially L-shape. The latch portion 41c protrudes in a direction substantially perpendicular to the grip portion 41b in the in-plane direction of the screen 3.

[0015] As shown in Fig. 1, when the locking member 4 is in a locked state with the screen 3 closing the opening 2a, the handle 41 has the base shaft 41a positioned on the upper side and aligned vertically, and the latch part 41c protrudes in the direction of the outer periphery of the door end frame 3a and faces the vertical frame 2b on the door end side in the forward direction. At this time, as shown in Fig. 3(a), the latch part 41c abuts against the indoor side of the latch receiver 2c provided on the vertical frame 2b to lock the door.

[0016] When opening the shoji screen 3, the handle 41 is rotated 90 degrees clockwise, and as shown in Fig. 3(b), the handle 41 is displaced to the open position along the left-right direction, and the latch part 41c moves to the inside of the frame 2, that is, to the left of the vertical frame 2b. As a result, the latch part 41c moves to a position where it does not face the vertical frame 2b in the forward direction, and as shown in Fig. 3(c), the shoji screen 3 can be pushed open.

[0017] As shown in Figs. 2 and 4, the opening limiting part 5 has a fixing part 50 for covering the base shaft part 41a of the handle 41 and fixing it to the handle 41, and an engagement part 51 for engaging with the frame 2. The fixing part 50 has a first cover part 50a that covers the upper surface of the base shaft part 41a, which is the upper part of the handle 41 located in the closed position, a second cover part 50b that is connected to the first cover part 50a and covers the indoor side of the handle 41, and a pair of opposing plate parts 50c that extend from the left and right ends of the second cover part 50b toward the door end frame 3a side and are also connected to the first cover part 50a and face each other with a gap in the left and right direction. One of the pair of opposing plate parts 50c is provided with an insertion hole 50d through which the screw 6 is inserted, and the other of the pair of opposing plate parts 50c is provided with a screw hole 50e through which the screw 6 as a fixing tool is screwed.

[0018] The engagement part 51 has a tip extension part 51a extending from the second cover part 50b of the fixing part 50 so as to protrude beyond the handle 41, and side extension parts 51b extending to the left and right of the tip extension part 51a and the second cover part 50b. The tip extension part 51a, the side extension part 51b and the second cover part 50b are connected to form the same plane, and the outer shape of the tip extension part 51a and the side extension part 51b forms an arc shape.

[0019] The opening limiting part 5 is attached to the handle 41 of the already installed fitting 1, for example, as shown in Fig. 5. The method of attaching the opening limiting part 5 is to first place the opening limiting part 5 over the fixed part 50 side from the indoor side of the handle 41. At this time, the first cover part 50a is brought into contact with the base shaft part 41a, and the second cover part 50b is brought into contact with or close to the handle 41.

[0020] Next, a screw 6 is inserted through an insertion hole 50d provided in one of the opposing plate portions 50c and screwed into a screw hole 50e provided in the other opposing plate portion 50c. By screwing the screw 6, the two opposing opposing plate portions 50c approach each other, and the handle 41 located therebetween is sandwiched and fixed.

[0021] When the handle 41 to which the opening limiting part 5 is attached is placed in the closed position, i.e., when the handle 41 is positioned along the vertical direction with the screen 3 closed, the latch part 41c protruding toward the vertical frame 2b abuts against the indoor side of the latch receiver 2c provided on the vertical frame 2b, maintaining the locked state, as shown in Figures 6(a) and 7(a). At this time, the tip extension part 51a of the opening limiting part 5 faces the door end frame 3a and the base body 40 with a gap in the front direction, and the right side extension part 51b faces the latch receiver 2c with a gap in the front direction.

[0022] Then, when the handle 41 in the closed position is rotated 90 degrees clockwise to move the handle 41 to the open position where it is approximately horizontal, as shown in Figures 6(b) and 7(b), with the screen 3 closed, the latch portion 41c faces the base body 40 and the door end frame 3a, and the tip extension portion 51a of the opening restriction part 5 faces the latch receiver 2c with a gap in the projection direction. Here, the tip extension portion 51a corresponds to the opposing portion at the open time at the engagement portion where the handle does not face the frame in the projection direction at the closed position but faces the frame with a gap in the projection direction at the open position, and the side extension portion 51b corresponds to the opposing portion at the closed time at the engagement portion where the handle faces the frame with a gap in the projection direction when the handle is in the closed position.

[0023] Then, when the handle 41 is in the open position and the door screen 3 is pushed out to the outside, the door screen 3 rotates and the door frame 3a moves to the outside as shown in Fig. 6(c) and Fig. 7(c). At this time, the tip extension 51a of the opening limiting part 5 comes into contact with and engages with the latch receiver 2c, thereby limiting the opening amount of the door screen 3.

[0024] Even if the handle 41 is displaced to the closed position when the opening amount of the shoji screen 3 is limited by the opening limiting part 5, the end extension portion 51a of the opening limiting part 5 faces the door end frame 3a and the base body 40 with a gap in the forward direction, and the right side extension portion 51b abuts the indoor side of the latch receiver 2c, so that the opening amount of the shoji screen 3 remains limited.

[0025] According to the opening limiting part 5 of this embodiment, the opening limiting part 5 has a fixing part 50 fixed to the handle 41 that is provided on the door 3 and can be rotated to move the door 3 between a closed position and an open position, so that the opening limiting part 5 can be fixed to the handle 41. In addition, the engagement part 51 of the opening limiting part 5 has a tip extension part 51a that faces the frame 2 with a gap in the projection direction when the handle 41 is in the open position. When the handle 41 that has been displaced to the open position is moved in the projection direction, the tip extension part 51a moves by the gap with the frame 2, and the tip extension part 51a abuts against the latch receiver 2c of the frame 2, thereby restricting the rotation of the door 3. Therefore, by simply attaching the opening limiting part 5 to the handle 41, it is possible to easily provide the function of restricting the opening amount of the door 3.

[0026] In addition, the latch receiver 2c with which the tip extension 51a of the engagement portion 51 engages when the shoji screen 3 is rotated with the handle 41 displaced to the open position is the portion with which the latch portion 41c of the handle 41 abuts when the shoji screen 3 is closed, so it is possible to engage the tip extension 51a with the latch receiver 2c of the frame 2 which has sufficient strength.

[0027] In addition, the engagement portion 51 has a lateral extension portion 51b that faces the frame 2 with a gap in the forward direction when the handle 41 is in the closed position. Therefore, even if the handle 41 is displaced to the closed position when the tip extension portion 51a engages with the latch receiver 2c of the frame 2 and the shoji screen 3 is open, the lateral extension portion 51b engages with the latch receiver 2c of the frame 2, so that it is possible to maintain the limited opening amount of the shoji screen 3 and prevent the shoji screen 3 from opening more widely.

[0028] In addition, since the side extensions 51b are provided on both sides of the tip extension 51a in the direction of rotation of the handle 41, it is possible to attach and use either the handle 41 that is rotated counterclockwise or the handle that is rotated clockwise. Therefore, it is possible to provide a highly versatile opening limiting component 5.

[0029] In addition, the opening limiting component 5 can be attached without modifying the handle 41, making it easy to install. It can also be easily installed on a fixture 1 that has already been installed. Therefore, even an existing fixture 1 can easily be equipped with the function of restricting the opening amount of the shoji screen 3.

[0030] In addition, a pair of opposing plate portions 50c that are connected to the first covering portion 50a and the second covering portion 50b that cover the handle 41 and face each other across the handle 41 are fixed by screws 6 close to each other on the opposite side of the first covering portion 50a and the second covering portion 50b of the handle 41, clamping and fixing the handle 41 therebetween, so that the opening limiting part 5 can be easily attached to the handle 41 without performing any processing on the handle 41.

[0031] In the above embodiment, an example was described in which the engagement portion 51 of the opening limiting component 5 has the lateral extension portion 51b, but the present invention is not limited thereto. For example, as shown in FIG. 8(a), the engagement portion 51 may have only the tip extension portion 51a. Also, in the above embodiment, an example was described in which the lateral extension portion 51b is provided on both sides of the tip extension portion 51a, but the present invention is not limited thereto. For example, as shown in FIG. 8(b), the lateral extension portion 51b may be provided on only one side of the tip extension portion 51a depending on the rotation direction of the handle 41.

[0032] In the above embodiment, the handle 41 provided on the fitting 1 for a vertical sliding window is taken as an example, but is not limited thereto. For example, a cremone handle or the like may be used as long as it is a locking handle provided on fittings that are supported on a frame and have a structure in which the sliding screen rotates to open, such as fittings for a horizontal sliding window, a protruding window, or a tilt-in or tilt-out window, and rotates around an axis along the projection direction.

[0033] The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof. The present embodiment includes at least the following inventions.

[0034] Aspect 1: An opening restriction component provided on a shoji screen that is rotatably supported on a frame that forms an opening and can close and open the opening, and attached to a handle that can be displaced between a closed position in which the opening is maintained closed by rotation, and an open position in which the opening can be opened, the component having a fixing part fixed to the handle and an engaging part that can engage with the frame, the engaging part having an open-time opposing part that does not face the frame in the front direction when the handle is in the closed position, and faces the frame with a gap in the front direction when the handle is in the open position.

[0035] According to the opening limiting part of the first aspect, the opening limiting part has a fixing part that is fixed to a handle that is provided on the screen and can be rotated to displace the screen between a closed position and an open position, so that it can be fixed to the handle. Also, the engagement part of the opening limiting part has an open facing part that does not face the frame in the front direction when the handle is in the closed position, and faces the frame with a gap in the front direction when the handle is in the open position, so that when the handle displaced to the open position is moved in the front direction, it moves by the amount of the gap with the frame, and the open facing part abuts against the frame, restricting the rotation of the screen. Therefore, by simply attaching the opening limiting member to the handle, it is possible to easily provide the function of restricting the opening amount of the screen.

[0036] Aspect 2: An opening restriction part as described in Aspect 1, characterized in that the opening opposing portion engages with the portion of the frame against which the handle abuts when the screen is locked when the screen is opened with the handle displaced to the open position.

[0037] According to the opening restriction part of embodiment 2, the portion with which the engaging portion engages when the screen is rotated with the handle displaced to the open position is the portion of the frame with which the handle abuts when the screen is closed, so it is possible to engage the opposing portion when opened in a portion with sufficient strength.

[0038] Aspect 3: An opening limiting part as described in Aspect 1 or Aspect 2, characterized in that the engagement portion has a closed-time opposing portion that faces the frame with a gap in the front direction when the handle is in the closed position.

[0039] According to the opening restriction part of aspect 3, the engagement portion has a closed facing portion that faces the frame with a gap in the forward direction when the handle is in the closed position. Therefore, even if the handle is displaced to the closed position when the engagement portion is engaged with the frame and the shoji screen is open, the closed facing portion engages with the frame, making it possible to prevent the shoji screen from opening wider.

[0040] Aspect 4: The opening limiting part according to aspect 3, characterized in that the opposing portions when closed are provided on both sides of the opposing portions when opened in the direction of the rotational operation of the handle.

[0041] According to the opening limiting part of the fourth aspect, the opposing parts when closed are provided on both sides of the opposing part when opened in the direction of rotation of the handle, so that it is possible to attach and use the handle whether it is rotated counterclockwise or clockwise. Therefore, it is possible to provide a highly versatile opening limiting part.

[0042] Aspect 5: An opening limiting part according to any one of Aspects 1 to 4, characterized in that it is fixed to the handle without any processing.

[0043] According to the opening limiting part of the fifth aspect, the opening limiting part is fixed to the handle without processing, so that it can be easily attached. Also, it can be easily attached to a fixture that is already installed.

[0044] Aspect 6: The opening limiting component according to any one of Aspects 1 to 5, wherein the fixing portion has a cover portion that covers the handle, and a pair of opposing plate portions that are connected to the cover portion and opposed to each other with the handle in between, The pair of opposing plate portions are fixed close to each other on the opposite side of the handle from the cover portion by a fastener that clamps the handle.

[0045] According to the opening-limiting part of embodiment 6, a pair of opposing plate portions that are connected to the covering portion that covers the inside of the handle and face each other across the handle are fixed close to each other by a fixing device on the opposite side of the handle covering portion, thereby clamping the handle and making it possible to easily attach the opening-limiting part to the handle without performing any processing on the handle.

[0046] Aspect 7: A fixture characterized in that an opening-limiting part described in any one of Aspects 1 to 5 is attached to the handle. According to the fitting of aspect 7, an opening limiting member can be attached to the handle, making it possible to realize a fitting with the function of regulating the opening amount of the shoji screen. [Explanation of symbols]

[0047] 1 Door and window, 2 Frame, 2a Opening, 2c Latch receiver, 3 Shoji screen, 5 Opening restriction parts, 6 Screws (fixtures), 41 Handles, 50: fixing portion, 50a: first cover portion, 50b: second cover portion, 50c Opposing plate part, 51 Engaging part, 51a Tip extension part (opposed part when opened), 51b Lateral extension part (opposing part when closed)

Claims

1. The door is provided on a door frame that is rotatably supported on a frame that forms an opening and is capable of closing and opening the opening. The door is attached to a handle that can be displaced between a closed position where the opening is kept closed and an open position where the opening can be opened by rotating the door. A fixing portion fixed to the handle and an engaging portion engageable with the frame, An opening restriction component characterized in that the engagement portion has an open-time opposing portion that does not face the frame in the front direction when the handle is in the closed position, and faces the frame with a gap in the front direction when the handle is in the open position.

2. The opening limiting component according to claim 1, An opening restriction part characterized in that the opening opposing portion engages with the portion of the frame that the handle abuts against when the screen is locked when the screen is opened with the handle displaced to the open position.

3. The opening limiting component according to claim 1 or 2, The opening restriction component is characterized in that the engagement portion has a closed facing portion that faces the frame with a gap in the front direction when the handle is in the closed position.

4. The opening limiting component according to claim 3, The opening limiting component is characterized in that the opposing portions when closed are provided on both sides of the opposing portion when opened in the direction of the rotational operation of the handle.

5. The opening limiting component according to claim 1 or 2, An opening limiting component that is fixed to the handle without any processing.

6. The opening limiting component according to claim 5, The fixing portion has a cover portion that covers the handle and a pair of opposing plate portions that are connected to the cover portion and opposed to each other with the handle in between, The opening restriction component is characterized in that the pair of opposing plate portions are fixed close to each other on the opposite side of the handle from the cover portion by a fixing device that clamps the handle.

7. A fixture, comprising the opening limiting part according to claim 1 or 2 attached to the handle.

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