Opening restriction component and fitting
The opening restriction component with a magnetic attachment system simplifies assembly and operation of sliding door locks, addressing complexity and operability issues in conventional systems.
Patent Information
- Application Number
- JP2024006942
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-08-01
AI Technical Summary
Conventional auxiliary locks for sliding doors have complex configurations leading to complicated manufacturing processes and troublesome operations due to the need for multiple components and manual alignment of engaging claws.
An opening restriction component comprising a receiving component fixed to the outer shutter and a restricting component attached by magnetic force, which includes a magnet and yoke to simplify assembly and operation by allowing easy attachment and removal.
The solution provides a simple, manufacturable, and operable mechanism for restricting the opening amount of sliding doors, enhancing ease of assembly and operation while ensuring reliable movement restriction.
Smart Images

Figure 2025112611000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an opening restriction component and a fitting for restricting the opening amount of a sliding door.
Background Art
[0002] Conventionally, an auxiliary lock for restricting an opening, which has a lock body incorporating a lock mechanism and a rail plate, is known (see, for example, Patent Document 1). This auxiliary lock is attached by sticking a rail plate combined with a lock body to an outer door (outer sliding door). Since an engaging claw provided in the lock mechanism of the lock body engages with an engaging recess provided in the rail plate and the lock body is fixed, even if an attempt is made to open the inner door (inner sliding door), the inner door hits the lock body and is configured not to open. Further, while pressing a lock button provided on the lock body to release the lock mechanism, the lock body is slid along the rail plate, and when the lock button is released at a position where the engaging claw provided in the lock mechanism engages with the engaging recess provided in the rail plate, the lock body is configured to be fixed.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Since the above-described auxiliary lock has a lock mechanism in which the lock body is operated by a lock button, a plurality of members are related to each other to form a complicated configuration, and since it is assembled so as to be slidably engaged with the rail plate, the manufacturing process is complicated and the assembly work is troublesome. Further, also in the operation of moving the position of the lock body, it is necessary to slide while pressing the lock button and release the lock button at a position where the non-visible engaging claw and the engaging recess engage with each other, and there is a problem that the operation is also troublesome.
[0005] The present invention has been made in view of such problems, and an object thereof is to provide an opening restriction component and a fitting excellent in manufacturability and operability.
Means for Solving the Problems
[0006] The main invention for achieving such an object is an opening restriction component for restricting the opening amount of a sliding shoji screen, which includes a receiving component fixed to the horizontal frame of the outer shoji screen, and a restricting component that is attached to the receiving component by magnetic force and restricts the movement of the inner shoji screen and the outer shoji screen. The opening restriction component is characterized by having these components. Other features of the present invention will be clarified by the description in this specification and the attached drawings.
Effects of the Invention
[0007] According to the present invention, it becomes possible to provide an opening restriction component and a fitting excellent in manufacturability and operability.
Brief Description of the Drawings
[0008]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Embodiments for Carrying Out the Invention
[0009] An embodiment of the opening restricting component of the present invention and a fitting having this opening restricting component will be described with reference to the drawings. In this embodiment, an example will be described in which the opening restricting component 10 is provided in a fitting 1 for a sliding window as shown in Fig. 1.
[0010] As shown in Figs. 1 and 2, the fitting 1 of this embodiment has a frame body 2 that forms a window opening, and an inner shutter 3 and an outer shutter 4 that are guided by the frame body 2 and can slide. The frame body 2 is formed by framing four frame members 2a to form a rectangular shape. The inner shutter 3 and the outer shutter 4 each have a face material 5 such as glass, and a frame 6 formed by framing an upper frame 3a, 4a, a lower frame 3b, 4b, a door leading edge frame 3c, 4c, and a meeting frame 3d, 4d that surround the face material 5. Here, the upper frames 3a, 4a and the lower frames 3b, 4b correspond to horizontal frames.
[0011] In the following description, when the fitting 1 is viewed from the indoor side, the direction that becomes up and down is the vertical direction, the direction that becomes left and right is the horizontal direction, and the depth direction that is the indoor-outdoor direction is the depth direction. Even for each part of the fitting 1 and the opening restricting component 10, and even when each member forming the fitting 1 and the opening restricting component 10 is in a single state, the direction will be specified and described in the vertical direction, the horizontal direction, and the depth direction in the attached state.
[0012] The opening restriction component 10 includes a receiving component 11 fixed to the indoor side of the upper frame 4a of the outer barrier 4, a restricting component 12 removably attached to the receiving component 11 by magnetic force, and a holding component 13 for holding the restricting component 12 removed from the receiving component 11. Note that the opening restriction component 10 does not necessarily have to have the holding component 13.
[0013] The receiving component 11 is made of metal that adheres to a magnet and is fixed to the upper frame 4a of the outer barrier 4 by a fixing member such as double-sided tape or an adhesive. As shown in FIG. 3, the receiving component 11 is a plate-shaped component having a substantially rectangular shape that is long in the moving direction of the inner barrier 3, that is, the left-right direction, and a plurality of notches 11a are provided at the upper and lower edges at intervals in the left-right direction.
[0014] Each notch 11a provided at the upper edge and each notch 11a provided at the lower edge are arranged at positions aligned in the vertical direction, and notch pairs 11b each consisting of two vertically aligned notches 11a are provided at intervals in the left-right direction. In the present embodiment, notch pairs 11b are provided at three positions in the left-right direction.
[0015] As shown in FIG. 4, the restricting component 12 includes a synthetic resin case 14, a magnet 15 and a yoke 16 housed in the case 14. The case 14 has a substantially rectangular parallelepiped shape and includes an upper plate portion 14a, a lower plate portion 14b, left and right side plate portions 14c, and an indoor plate portion 14d disposed on the indoor side.
[0016] The upper plate portion 14a, the lower plate portion 14b, and the left and right side plate portions 14c are connected at their adjacent edges to form a substantially square tube shape, and the indoor sides of the upper plate portion 14a, the lower plate portion 14b, and the left and right side plate portions 14c are closed by the indoor plate portion 14d, and the outdoor side is open. Inside the case 14, ribs 14e connecting the upper plate portion 14a and the lower plate portion 14b are provided at three positions, and a screw engaging portion 14f to which a socket screw 17 for fixing the yoke 16 is screwed is provided at the central rib 14e.
[0017] The magnet 15 is in the shape of a rectangular parallelepiped, and the yoke 16 is made of a soft magnetic material with high permeability, such as iron, and is formed by bending a plate-shaped member into a U shape. The yoke 16 has an indoor facing portion 16a facing the indoor side surface of the magnet 15, and left and right side surface facing portions 16b respectively facing the left and right side surfaces of the magnet 15. The yoke 16 is soft iron that amplifies the attractive force of the magnet, and guides the magnetic flux generated from the magnet 15 to act on the receiving component 11 from the end face of the yoke 16. A screw insertion hole 16c through which the socket head screw 17 is inserted is provided substantially at the center of the indoor facing portion 16a.
[0018] In the yoke 16, the indoor side edges of the left and right side surface facing portions 16b are connected to the left and right edges of the indoor facing portion 16a, and each end face 16d of the side surface facing portion 16b faces the outdoor side. Protrusions 16e protruding to the outdoor side are respectively provided at the upper and lower ends of the end face 16d of the side surface facing portion 16b.
[0019] In the yoke 16, the indoor facing portion 16a is in contact with the rib 14e in the case 14, and the socket head screw 17 inserted through the screw insertion hole 16c is screwed into the screw thread engaging portion 14f and fixed to the case 14. Then, the magnet 15 is fixed to the outdoor side of the indoor facing portion 16a by a double-sided tape, an adhesive, or the like to form the regulating component 12. In the assembled state as the regulating component 12, the protrusion 16e of the yoke 16 protrudes to the outdoor side from the outdoor side edge of the left and right side plate portions 14c of the case 14.
[0020] The regulating component 12 provided with the magnet 15 and the yoke 16 is attached in a state where the protrusion 16e of the yoke 16 is engaged by being inserted into the notch 11a of the receiving component 11 attached to the upper frame 4a of the outer barrier 4, and the magnet 15 is attached in contact with or close to the indoor side surface of the receiving component 11. For this reason, the interval between the notch pairs 11b provided in the receiving component 11 coincides with the interval between the left and right side surface facing portions 16b of the yoke 16 and the interval between the left and right of the protrusion 16e. Also, the interval between the two notch pairs 11b positioned vertically in the receiving component 11 coincides with the vertical interval between the two protrusions 16e provided in each side surface facing portion 16b. Here, the notch 11a of the receiving component 11 corresponds to the engaging portion where the protrusion is engaged.
[0021] In a state where the regulating component 12 is attached to the receiving component 11, the portion 16f between the two protrusions 16e provided in each side surface facing portion 16b of the yoke 16 faces the receiving component 11 with a slight gap therebetween.
[0022] The holding component 13 is a plate-shaped component made of metal that adheres to the magnet, similar to the receiving component 11. The holding component 13 has a width substantially the same as the interval in the left-right direction of the notch 11a provided in the receiving component 11. The holding component 13 is attached to the indoor side portion of the inner barrier 3 by means of a double-sided tape, an adhesive, or the like. For example, as shown in FIG. 1, it is attached to the left side surface 3e of the calling frame 3d in the inner barrier 3. Incidentally, the holding component 13 may be attached to any of the indoor sides of the inner barrier 3, the outer barrier 4, and the frame body 2 as long as it is at a position on the indoor side that does not hinder the movement of the inner barrier 3 and the outer barrier 4. Also, the holding component 13 may have a recess into which the protrusion 16e of the regulating component 12 is inserted.
[0023] When the opening restriction component 10 does not limit the opening amounts of the inner shutter 3 and the outer shutter 4, as shown in FIG. 6(a), the restricting component 12 is magnetically held by a holding component 13 provided on a calling frame 3d of the inner shutter 3. At this time, since a receiving component 11 provided on an upper frame 4a of the outer shutter 4 does not protrude to the indoor side from a facing surface facing the outdoor side in the calling frame 3d of the inner shutter 3, it does not interfere with the movement of the inner shutter 3 and the outer shutter 4.
[0024] And when restricting the opening amounts of the inner shutter 3 and the outer shutter 4, the restricting component 12 is removed from the holding component 13 and attached by magnetic force to the receiving component 11 provided on the upper frame 4a of the outer shutter 4 as shown in FIG. 6(b). At this time, when two protrusions 16e at the right end of the restricting component 12 are arranged on the right side of the right end of the receiving component 11 and two protrusions 16e at the left end of the restricting component 12 are arranged in the rightmost notch pair 11b of the receiving component 11, the right end of the restricting component 12 abuts or is close to the left side surface 3e of the calling frame 3d of the inner shutter 3 and the restricting component 12 is attached to the receiving component 11. In this case, the inner shutter 3 and the outer shutter 4 can be in a state where they cannot move, that is, a state where the inner shutter 3 and the outer shutter 4 cannot be opened.
[0025] Also, when two protrusions 16e at the right end of the restricting component 12 are arranged in the rightmost notch pair 11b of the receiving component 11 and two protrusions 16e at the left end of the restricting component 12 are arranged in the central notch pair 11b of the receiving component 11, the right end of the restricting component 12 and the left side surface 3e of the calling frame 3d of the inner shutter 3 are spaced apart by approximately the width of the restricting component 12 and the restricting component 12 is attached to the receiving component 11.
[0026] And when two protrusions 16e at the right end of the restricting component 12 are arranged in the central notch pair 11b of the receiving component 11 and two protrusions 16e at the left end of the restricting component 12 are arranged in the leftmost notch pair 11b of the receiving component 11, the right end of the restricting component 12 and the left side surface 3e of the calling frame 3d of the inner shutter 3 are spaced apart by approximately twice the width of the restricting component 12 and the restricting component 12 is attached to the receiving component 11.
[0027] Also, when the two protrusions 16e at the right end of the restricting component 12 are arranged in the leftmost notch pair 11b of the receiving component 11 and the two protrusions 16e at the left end of the restricting component 12 are arranged to the left of the left end of the receiving component 11, the right end of the restricting component 12 and the left side surface 3e of the calling frame 3d of the inner shutter 3 are spaced apart by a distance approximately three times the width of the restricting component 12, and the restricting component 12 is attached to the receiving component 11. Thus, by changing the attachment position of the restricting component 12, it becomes possible to change the opening amount of the inner shutter 3 and the outer shutter 4.
[0028] According to the opening restriction component 10 of the present embodiment, the restricting component 12 that restricts the movement of the inner shutter 3 and the outer shutter 4 includes a magnet 15, and since the receiving component 11 is made of metal that adheres to the magnet 15, it is possible to attach the restricting component 12 to the receiving component 11 by magnetic force. Therefore, it is possible to easily attach the restricting component 12 only by bringing it close to the receiving component 11, and it is also easy to remove. For this reason, it becomes possible to easily limit the opening amount of the inner shutter 3 and the outer shutter 4. Further, since the restricting component 12 is configured to be attached by magnetic force, the structure is simple. Therefore, it is possible to provide the opening restriction component 10 having excellent manufacturability and operability.
[0029] Also, the protrusions 16e of the restricting component 12 protrude toward the outer shutter 4 side and are inserted into and engaged with the notch 11a of the receiving component 11, so the restricting component 12 is difficult to move in the left - right direction even when pressed in the moving direction of the inner shutter 3 and the outer shutter 4. For this reason, it becomes possible to more reliably restrict the movement of the inner shutter 3 and the outer shutter 4 than when attached only by magnetic force.
[0030] Also, since the protrusions 16e of the metal yoke 16 are engaged with the notch 11a of the receiving component 11, the strength of the protrusions 16e is higher than that of the protrusions 16a made of resin, for example. Therefore, it is possible to provide durability against stronger impacts on the restricting component 12 due to the movement of the inner shutter 3 and the outer shutter 4.
[0031] In addition, since the restricting component 12 is positioned by having the protrusion 16e engaged with the notch portion 11a, by providing the notch portion 11a at a position where the opening amounts of the inner shutter 3 and the outer shutter 4 become a predetermined opening amount, the restricting component 12 can be easily attached to the position where the inner shutter 3 and the outer shutter 4 have a desired opening amount. Further, since the notch portions 11a are provided at a plurality of locations in the moving direction of the inner shutter 3, it is possible to set the opening amounts of the inner shutter 3 and the outer shutter 4 to be different from each other.
[0032] In addition, the yoke 16 included in the restricting component 12 has a plate shape that extends from the side opposite to the side facing the receiving component 11 of the magnet 15 toward the receiving component 11 side, and since the end face 16f of the yoke 16 faces the receiving component 11, it becomes possible to attach the restricting component 12 with a stronger magnetic force.
[0033] In addition, since the holding component 13 for holding the restricting component 12 is provided on the indoor side of the frame 6 of the inner shutter 3, when the opening amounts of the inner shutter 3 and the outer shutter 4 are not restricted, it is possible to attach and hold the restricting component 12 removed from the receiving component 11 to the holding component 13 by magnetic force. For this reason, there is no need to secure a storage place for the restricting component 12, it is difficult to be lost, and it can be used immediately when needed. In addition, it becomes possible to provide the fixture 1 having the opening restricting component 10 excellent in manufacturability and operability.
[0034] In the above embodiment, an example in which the receiving component 11 is made of a metal that adheres to the magnet has been described, but the present invention is not limited to this. As shown in FIG. 7, the receiving component 11 may include a magnet 11c. Further, when the receiving component 11 includes the magnet 11c, the restricting component 12 may include a case and a metal that adheres to the magnet even if it does not include the magnet 15 and the yoke 16. Further, even when the restricting component 12 has the magnet 15, it does not necessarily have to include the yoke 16. In this case, the protrusion inserted into the notch portion 11a of the receiving component 11 may be provided in the case 14, for example.
[0035] In the above-described embodiment, an example has been described in which the opening amounts of the inner shutter 3 and the outer shutter 4 are changed by changing the attachment position of the restricting component 12 to the receiving component 11. However, the present invention is not limited to this. For example, as shown in FIG. 8, the restricting component 18 includes four protrusions 18a, a positioning portion 18b formed by a portion surrounded by the protrusions 18a, and an overhanging portion 18c that protrudes to one side of the positioning portion 18b in the left-right direction. When inserting the four protrusions 18a into the four notch portions 11a provided in the receiving component 11, by arranging the overhanging portion 18c on the side of the calling frame 4d of the outer shutter 4 or on the side of the door tip frame 4c, it becomes possible to vary the distance between the right end of the restricting component 18 and the left side surface 3e of the calling frame 3d of the inner shutter 3.
[0036] In this case, it is possible to change the opening amounts of the inner shutter 3 and the outer shutter 4 only by changing the orientation of attaching the restricting component 12. FIG. 8 shows an example in which both the receiving component 11 and the restricting component 18 are provided with magnets 11c and 15. However, similar to the above-described embodiment, a configuration in which a magnet is provided on either the receiving component 11 or the restricting component 18 may be employed.
[0037] In the above-described embodiment, an example has been described in which the opening restricting component 10 is provided on the upper frame 4a of the outer shutter 4. However, the present invention is not limited to this, and for example, it may be provided on the lower frame 4b of the outer shutter 4.
[0038] The above-described embodiment is for facilitating the understanding of the present invention and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be changed and improved without departing from its gist, and equivalents of the present invention are included therein.
[0039] The present embodiment includes at least the following inventions. Aspect 1: An opening restricting component for restricting the opening amount of a sliding door, comprising a receiving component fixed to an outer shutter, and a restricting component attached to the receiving component by magnetic force to restrict the movement of an inner shutter and the outer shutter.
[0040] According to the aperture limiting component of Mode 1, since the restricting component that restricts the movement of the inner shutter and the outer shutter is attached to the receiving component fixed to the outer shutter by magnetic force, it can be easily attached just by bringing the restricting component closer to the receiving component. Therefore, it becomes possible to attach the restricting component by magnetic force and easily limit the opening amount of the inner shutter and the outer shutter. Further, since the restricting component is configured to be attached by magnetic force, the structure is simple. Therefore, it is possible to provide an aperture limiting component excellent in manufacturability and operability.
[0041] Mode 2: The aperture limiting component according to Mode 1, wherein the restricting component is removably attached to the receiving component.
[0042] According to the aperture limiting component of Mode 2, since the restricting component is removable from the receiving component, it is possible to remove the restricting component and easily put the inner shutter and the outer shutter in a state where the opening amount is not restricted.
[0043] Mode 3: The aperture limiting component according to Mode 2, wherein the restricting component has a protrusion protruding toward the outer shutter side, and the receiving component has an engaging portion with which the protrusion is engaged.
[0044] According to the aperture limiting component of Mode 3, since the protrusion of the restricting component protrudes toward the outer shutter side and is engaged with the engaging portion of the receiving component, the restricting component is difficult to move in the moving direction of the inner shutter. Therefore, it becomes possible to more reliably restrict the movement of the inner shutter and the outer shutter than in the case where it is attached only by magnetic force.
[0045] Mode 4: The aperture limiting component according to any one of Modes 1 to 3, wherein the protrusion of the restricting component is engaged with and positioned by the engaging portion, and the engaging portion is provided at a plurality of positions in the moving direction of the inner shutter.
[0046] According to the aperture limiting component of Mode 4, since the regulating component is positioned with the protrusion engaged with the engaging portion, by providing the engaging portion at a position where the opening amounts of the inner shutter and the outer shutter become a predetermined opening amount, it becomes possible to easily attach the regulating component so that the inner shutter and the outer shutter have a desired opening amount. Further, since the engaging portions are provided at a plurality of locations in the moving direction of the inner shutter, it becomes possible to set a plurality of types of opening amounts of the inner shutter and the outer shutter to be different from each other.
[0047] Mode 5: The aperture limiting component according to any one of Modes 1 to 4, wherein the regulating component has a positioning portion positioned by the protrusion and an overhanging portion that overhangs to one side of the positioning portion in the moving direction of the inner shutter.
[0048] According to the aperture limiting component of Mode 5, since the regulating component has an overhanging portion that overhangs to one side of the positioning portion in the moving direction of the inner shutter, the distance between the regulating component and the inner shutter is different when one side of the positioning portion faces the inner shutter and when the other side of the positioning portion faces the inner shutter. Therefore, it becomes possible to vary the opening amounts of the inner shutter and the outer shutter only by changing the mounting direction of the regulating component.
[0049] Mode 6: The aperture limiting component according to any one of Modes 1 to 4, wherein the receiving component is made of metal and the regulating component includes a magnet.
[0050] According to the aperture limiting component of Mode 6, since the regulating component includes a magnet and the receiving component is made of metal to which the magnet adheres, it becomes possible to attach the regulating component to the receiving component by magnetic force.
[0051] Mode 7: The aperture limiting component according to any one of Modes 1 to 4, wherein the regulating component includes a plate-shaped yoke that extends from the side opposite to the side facing the receiving component of the magnet to the receiving component side, and an end surface of the yoke faces the receiving component.
[0052] According to the aperture restricting component of Aspect 7, the yoke included in the restricting component has a plate shape that extends from the side opposite to the side facing the receiving component of the magnet toward the receiving component side. Since the end face of the yoke faces the receiving component, it becomes possible to attach the restricting component with a stronger magnetic force.
[0053] Aspect 8: The aperture restricting component according to any one of Aspects 1 to 4, characterized in that the yoke has the protrusion.
[0054] According to the aperture restricting component of Aspect 8, the yoke is made of metal, and the protrusion of the metal yoke is engaged with the engaging portion of the receiving component. Therefore, the strength of the protrusion is higher than, for example, when the protrusion is made of resin. For this reason, it is possible to provide durability against stronger impacts on the restricting component due to the movement of the inner shutter and the outer shutter.
[0055] Aspect 9: The aperture restricting component according to any one of Aspects 1 to 4, characterized in that it has a holding component that holds the restricting component on the indoor side of the frame of the inner shutter.
[0056] According to the aperture restricting component of Aspect 9, since it has a holding component that holds the restricting component on the indoor side of the frame of the inner shutter, when the opening amounts of the inner shutter and the outer shutter are not restricted, it is possible to hold the restricting component removed from the receiving component by the holding component. For this reason, there is no need to secure a storage place for the restricting component, it is difficult to get lost, and it can be used immediately when needed.
[0057] Aspect 10: A fitting characterized by having the aperture restricting component according to any one of Aspects 1 to 9.
[0058] According to the fitting of Aspect 10, it becomes possible to provide a fitting having an aperture restricting component excellent in manufacturability and operability.
Explanation of Signs
[0059] 1 Fitting, 3 Inner shutter, 4 Outer shutter, 4a Upper frame, 6 Frame, 10 Aperture restricting component 11 Receiving part, 11a Notch (engagement part), 11c Magnet, 12 Restricting part, 13 Holding part, 15 Magnet, 16 Yoke, 16d End face of the yoke, 16e Protrusion, 18 Restricting part, 18a Protrusion, 18b Positioning part, 18c Overhanging part,
Claims
1. An aperture limiting component for limiting the opening amount of a sliding door, comprising: a receiving component fixed to an outer shutter; a regulating component attached to the receiving component by magnetic force to regulate the movement of an inner shutter and the outer shutter; The aperture limiting component is characterized by comprising the above.
2. The aperture limiting component according to Claim 1, wherein the regulating component is removably attached to the receiving component.
3. The aperture limiting component according to Claim 1 or Claim 2, wherein the regulating component has a protrusion protruding toward the outer shutter side, and the receiving component has an engaging portion with which the protrusion is engaged.
4. The aperture limiting component according to Claim 3, wherein the regulating component is positioned with the protrusion engaged with the engaging portion, and the engaging portion is provided at a plurality of locations in the moving direction of the inner shutter.
5. The aperture limiting component according to Claim 4, wherein the regulating component has a positioning portion positioned by the protrusion, and has an overhanging portion protruding to one side of the positioning portion in the moving direction of the inner shutter.
6. The aperture limiting component according to Claim 4 or Claim 5, wherein the regulating component includes a magnet, and the receiving component is made of metal to which the magnet adheres.
7. The aperture limiting component according to Claim 6, wherein the regulating component includes a plate-shaped yoke connecting from the side opposite to the side facing the receiving component of the magnet to the receiving component side, and the end face of the yoke faces the receiving component.
8. The aperture limiting component according to Claim 7, wherein the yoke has the protrusion.
9. The aperture limiting component according to Claim 1 or Claim 2, wherein it has a holding component for holding the regulating component on the indoor side of the frame of the inner shutter.
10. A fitting characterized by having the aperture limiting component according to Claim 1 or Claim 2.
Citation Information
Patent Citations
Auxiliary lock having ventilation function
JP2005068979A