Sagging prevention tool, hinge, and door support structure

Abstract

To provide a sagging prevention tool capable of reliably preventing sagging of a door, a hinge having the sagging prevention tool, and a door support structure that uses the hinge.SOLUTION: The sagging prevention tool is a component that is used by being attached to the hinge having a cylindrical projection. An insertion hole is provided in a main body for inserting the cylindrical projection. The insertion hole is provided in a position eccentric from a center of the main body. A thick part and a thin part are provided in positions on both sides of the insertion hole. The hinge includes the cylindrical projection and the sagging prevention tool used by being covered on an outside of the cylindrical projection. The sagging prevention tool of the present invention is used as the sagging prevention tool. In the door support structure, a suspended side of the door and a door frame are connected by two or more hinges having at least an upper hinge and a lower hinge. The hinge of the present invention is used as the hinge.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sagging prevention device that prevents sagging on the door edge side of a door, a hinge equipped with the sagging prevention device, and a door support structure using the hinge. [Background technology]

[0002] Doors that open forward or backward (so-called swing doors) are supported by connecting the door's hanging side to the door frame with a hinge. For example, to hold glass doors used in bathrooms, gravity hinges that use gravity to automatically close the door are used (Patent Document 1).

[0003] As shown in Figure 10, a conventional gravity hinge mainly comprises a base side member A fixed to the door frame, a door side member C fixed to the door B, an axis member D inserted between the base side member A and the door side member C, and a door holding member E that holds the door B. The base side member A comprises a door side substrate A1 and a door side cam member A2 fixed to the door, and the door side member C comprises a base side substrate C1 and a base side cam member C2 fixed to the door frame.

[0004] The door retaining member E comprises two plate-shaped gaskets E1 applied to both sides of the door, two cylindrical gaskets E2 covering the outer periphery of the screw receiving portion C3 provided on the door side member C, a clamping piece E3 arranged on the opposite side of the fixed portion C4 of the door side member C and the door B, a fixing screw E4 for fixing the fixed portion C4, the plate-shaped gaskets E1, the door B, the plate-shaped gaskets E1 and the clamping piece E3, a washer E5 interposed when the fixing screw E4 is fixed, and a cover E6 for covering the clamping piece E3. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-029647 A Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, this is not limited to glass doors, but for doors such as swing-out doors, which have a structure in which the door's hanging side and the door frame are connected by hinges, the phenomenon of the door tip sagging due to its own weight (commonly known as "sagging") can occur, as shown in Figure 11.

[0007] In FIG. 11, the dashed line indicates a state in which door B is supported perpendicular to floor surface F, and the solid line indicates a state in which the door edge of door B is lowered, i.e., a state in which sagging occurs.

[0008] In the past, to prevent doors from sagging, the craftsmen installing the doors would stuff the inside of the tubular gasket with material, but this method resulted in variations in the finished product depending on the skill level of the craftsman, making it difficult to stabilize the quality.

[0009] The present invention has been made in consideration of the above-mentioned circumstances, and its problem to be solved is to provide a sagging prevention device that can reliably prevent a door from sagging, a hinge equipped with said sagging prevention device, and a door support structure using said hinge. [Means for solving the problem]

[0010] [Drip prevention device] The sagging prevention device of the present invention is a component that is attached to a hinge equipped with a cylindrical protrusion, the main body being provided with an insertion hole for inserting the cylindrical protrusion, the insertion hole being provided at a position eccentric to the center of the main body, and a thick-walled portion and a thin-walled portion being provided at positions on either side of the insertion hole of the main body.

[0011] [Hinge] The hinge of the present invention comprises a cylindrical projection and a sagging prevention device that is used by covering the outside of the cylindrical projection, and the sagging prevention device of the present invention is used as the sagging prevention device.

[0012] [Door support structure] The door support structure of the present invention has a door hanging side and a door frame connected by two or more hinges including at least an upper hinge and a lower hinge, and the hinge of the present invention is used as the hinge. Effect of the Invention

[0013] According to the present invention, sagging of the door can be reliably prevented. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2A is a perspective view showing an example of a sagging prevention device of the present invention, FIG. 2B is a front view of the sagging prevention device of FIG. 2A, and FIG. [Diagram 2] (a) is a front view of the sagging prevention device in Figure 1(a), (b) is a back view of (a), (c) is a left side view of (a), (d) is a right side view of (a), (e) is a plan view of (a), and (f) is a bottom view of (a). [Diagram 3] FIG. 4 is an explanatory diagram showing an example of a hinge. [Figure 4] FIG. 11 is an explanatory diagram showing another example of a hinge. [Diagram 5] FIG. 11 is an explanatory diagram showing another example of a hinge. [Figure 6] FIG. 2 is an explanatory diagram showing an example of a state in which the sagging prevention device of FIG. 1 is used. [Figure 7] FIG. 7 is an explanatory diagram of the positional relationship of the doors in the case of FIG. 6. [Figure 8] FIG. 2 is an explanatory diagram showing an example of another state of use of the sagging prevention device of FIG. 1. [Figure 9] FIG. 9 is an explanatory diagram of the positional relationship of the doors in the case of FIG. 8 . [Figure 10] FIG. 1 is an explanatory diagram showing an example of a conventional gravity hinge. [Figure 11] An explanatory diagram of the phenomenon of the door edge sagging due to its own weight. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] (Embodiment) An example of an embodiment of the present invention will be described with reference to the drawings. As an example, a sagging prevention device 10 shown in Fig. 1(a) to (c) has an insertion hole 12 provided in a disk-shaped main body 11. The insertion hole 12 is a through hole for inserting a cylindrical protrusion 30 of various hinges 20 described later. The sagging prevention device 10 can be made of various materials such as resin, rubber, silicon, and metal.

[0016] The insertion hole 12 is provided at a position eccentric from the center of the main body 11 (a position where a center point CP2 of the insertion hole 12 is shifted from a center point CP1 of the main body 11). Since the insertion hole 12 is provided at a position eccentric from the center of the main body 11, when the main body 11 is viewed from the front and rear, a thick portion 13a is formed on one side of the insertion hole 12, and a thin portion 13b is formed on the other side.

[0017] More specifically, as shown in FIG. 1(b), on an imaginary center line L1 that passes through the center point CP1 of the main body 11 and divides the main body 11 into left and right halves, when comparing the thickness T1 above the insertion hole 12 on the imaginary center line L1 with the thickness T2 below the insertion hole 12, the thickness T1 on the upper side is thicker than the thickness T2 on the lower side.

[0018] In addition, the thick portion 13a generally refers to the area between the first outer peripheral virtual line OE1 and the first inner peripheral virtual line IE1, and the thin portion 13b generally refers to the area between the second outer peripheral virtual line OE2 and the second inner peripheral virtual line IE2.

[0019] Here, the first outer peripheral virtual line OE1 means a virtual line that passes through the outer peripheral edge apex P1 of the main body 11 and is perpendicular to the virtual center line L1, and the first inner peripheral virtual line IE1 means a virtual line that passes through the inner peripheral edge apex P2 of the main body 11 and is perpendicular to the virtual center line L1.

[0020] In addition, the second outer peripheral virtual line OE2 refers to a virtual line that passes through the outer peripheral edge bottom P3 of the main body 11 and is perpendicular to the virtual center line L1, and the second inner peripheral virtual line IE2 refers to a virtual line that passes through the inner peripheral edge bottom P4 of the main body 11 and is perpendicular to the virtual center line L1.

[0021] The first outer peripheral imaginary line OE1, the first inner peripheral imaginary line IE1, the second outer peripheral imaginary line OE2, and the second inner peripheral imaginary line IE2 are parallel lines that do not intersect with each other.

[0022] In this embodiment, a mark 14 is provided on the thick portion 13a on the front side of the main body 11. The mark 14 serves as a mark for identifying the front and back of the main body 11, and also serves as a mark for identifying the position of the thick portion 13a.

[0023] The mark 14 is not a required component, but providing the mark 14 enables the craftsman performing the installation work to understand at a glance the installation direction of the sagging prevention device 10 and the front and back of the sagging prevention device 10, thereby preventing installation errors. The position, shape, number, etc. of the mark 14 can be determined as appropriate.

[0024] The sagging prevention device 10 of this embodiment has a design appearance as shown in Figures 2(a) to 2(f). Figure 2(a) is a front view of the sagging prevention device 10 of this embodiment, (b) is a rear view of (a), (c) is a left side view of (a), (d) is a right side view of (a), (e) is a plan view of (a), and (f) is a bottom view of (a).

[0025] In this embodiment, an example is given in which both the inner and outer circumferences of the sagging prevention device 10 are circular, but the inner and outer circumferences of the sagging prevention device 10 can be shapes other than circular (for example, non-circular shapes such as polygons and ellipses).

[0026] Examples of the inner circumference or outer circumference being non-circular include making both the inner circumference and the outer circumference non-circular, making the outer circumference circular and only the inner circumference non-circular, and making the inner circumference circular and only the outer circumference non-circular.

[0027] The configuration of the above embodiment is an example, and the sagging prevention device 10 of the present invention is not limited to the configuration of the above embodiment. The sagging prevention device 10 of the present invention can be modified, such as by replacing, omitting, or adding components, within the scope of achieving the intended purpose.

[0028] The sagging prevention device 10 of the present invention can be used, for example, as a part of the various hinges 20 shown in Figs.

[0029] As an example, the hinge 20 shown in Figure 3 is a gravity hinge that has a mechanism for automatically closing the door by utilizing gravity, and its main components include a base side member 21 fixed to the door frame 26 (omitted in Figure 3), a door side member 23 fixed to the door 22, an axis member 24 inserted between the base side member 21 and the door side member 23, and a door retaining member 25.

[0030] The base-side member 21 includes a base-side substrate 21a and a base-side cam member 21b that are fixed to a door frame 26 (not shown in FIG. 3). The base-side substrate 21a includes a vertically long, flat fixing portion 21c that is fixed to the door frame, and a cylindrical portion 21d that is provided on the fixing portion 21c.

[0031] The door-side member 23 has the same configuration as the base-side member 21, and includes a door-side base 23a and a door-side cam member 23b that are fixed to the door 22. The door-side base 23a includes a vertically long, flat fixing portion 23c that is fixed to the door 22, and a cylindrical portion 23d provided on the fixing portion 23c. Two cylindrical protrusions 30 are provided on the fixing portion 23c with a gap therebetween in the vertical direction.

[0032] The shaft member 24 is a vertically long rod-shaped member with a tapered portion at the tip. Approximately the lower half of the shaft member 24 in the longitudinal direction is housed in the insertion hole of the base-side cam member 21b, and the remaining portion is housed in the insertion hole of the door-side cam member 23b.

[0033] The door retaining member 25 includes two plate-shaped gaskets 25a attached to both sides of the door 22, two sagging prevention devices 10 that cover cylindrical protrusions 30 provided on the door side member 23, a clamping piece 25c that is arranged on the opposite side of the fixed part 23c of the door side member 23 and the door 22, two fixing screws 25d that fix the fixed part 23c, the plate-shaped gasket 25a, the door 22, the plate-shaped gasket 25a and the clamping piece 25c, a washer 25e that is interposed when the fixing screws 25d are fixed, and a cover 25f that is placed over the clamping piece 25c.

[0034] The cylindrical projection 30 functions as a boss for receiving a fastening tool such as a screw or a bolt, and the sagging prevention device 10 is used by being placed over the outside of this cylindrical projection 30.

[0035] In addition, in FIG. 3, only the upper hinge (hereinafter referred to as the "upper hinge") 20A of the door 22 is shown, but when the door 22 is hung, a hinge similar to the upper hinge 20A (hereinafter referred to as the "lower hinge") 20B is also provided on the lower side of the door 22.

[0036] 4 is also a so-called gravity hinge. The hinge 20 includes a base member 21 fixed to a door frame 26, a door member 23 fixed to a door 22, and a shaft member 24 inserted between the base member 21 and the door member 23.

[0037] The base side member 21 includes a base side substrate 21a and a base side cam member 21b. The base side substrate 21a includes a vertically long flat fixed portion 21c that is fixed to the door frame 26, and a cylindrical portion 21d provided on the fixed portion 21c.

[0038] The base-side substrate 21a is attached to the door frame 26 by screwing a set screw 29a through a through hole 21e provided in the fixing portion 21c into a cylindrical protrusion 30 of the base-side back plate 27, with the door frame 26 sandwiched between the fixing portion 21c and the back plate (hereinafter referred to as the "base-side back plate") 27. The sagging prevention device 10 is used by covering the outside of the two cylindrical protrusions 30.

[0039] The door-side member 23 has the same configuration as the base-side member 21, and includes a door-side base 23a and a door-side cam member 23b that are fixed to the door 22. The door-side base 23a includes a vertically elongated flat fixing portion 23c that is fixed to the door 22, and a cylindrical portion 23d provided on the fixing portion 23c.

[0040] The door side base 23a is attached to the door 22 by sandwiching the door 22 between the fixing portion 23c and a back plate (hereinafter referred to as the "door side back plate") 28, and screwing a locking screw 29a through a through hole 23e provided in the fixing portion 23c into a cylindrical protrusion 30 of the door side back plate 28.

[0041] Figure 4 shows an example in which the sagging prevention device 10 is placed over each of the cylindrical protrusions 30 of the base side back plate 27, but the sagging prevention device 10 may also be placed over the cylindrical protrusions 30 of the door side back plate 28 instead of the cylindrical protrusions 30 of the base side back plate 27.

[0042] Although FIG. 4 shows only the upper hinge 20A, a lower hinge 20B similar to the upper hinge 20A is provided on the lower side of the door 22 when the door 22 is hung.

[0043] As yet another example, the hinge 20 shown in FIG. 5 includes a base side member 21 fixed to a door frame 26 (omitted in FIG. 5), a door side member 23 fixed to a door 22, and an axis member 24 inserted between the base side member 21 and the door side member 23.

[0044] The base side member 21 has a base side base body 21a that is fixed to the door frame 26. The hinge 20 shown in Fig. 5 is not a so-called gravity hinge, and does not have a configuration equivalent to the base side cam member 21b.

[0045] The base side substrate 21a includes a vertically long flat fixing portion 21c that is fixed to the door frame 26, and a cylindrical portion 21d provided on the fixing portion 21c. The base side substrate 21a is fixed to the door frame 26 by screwing a set screw 29b that is passed through a through hole 21e provided in the fixing portion 21c into the door frame 26 (not shown in FIG. 5).

[0046] The door-side member 23 has the same configuration as the base-side member 21, and includes a door-side base body 23a that is fixed to the door 22. As described above, the hinge 20 shown in Fig. 5 is not a so-called gravity hinge, and does not include a configuration equivalent to the door-side cam member 23b.

[0047] The door-side base 23a includes a vertically long, flat fixing portion 23c that is fixed to the door 22, and a cylindrical portion 23d provided on the fixing portion 23c. The door-side base 23a is fixed to the door 22 by screwing a set screw 29a that passes through a through hole 23e provided in the fixing portion 23c into a receiver 29c provided on the other side of the door 22. A cylindrical projection 30 having a female thread for screwing the set screw 29a is provided on the receiver 29c, and the sagging prevention device 10 is placed on the outside of the cylindrical projection 30.

[0048] Although FIG. 5 shows only the upper hinge 20A, a lower hinge 20B similar to the upper hinge 20A is provided on the lower side of the door 22 when the door 22 is hung.

[0049] As explained so far, the sagging prevention device 10 of the present invention can be used by covering the outside of the cylindrical protrusion 30 provided on the door side member 23, or it can be used by covering the outside of the cylindrical protrusion 30 provided on the base side member 21.

[0050] Furthermore, the cylindrical protrusion 30 over which the sagging prevention device 10 is placed is not limited to being provided on the base side member 21 or the door side member 23, but may be provided on various members used when fixing the base side member 21 to the door frame 26 or when fixing the door side member 23 to the door (for example, the base side back plate 27 or the door side back plate 28 of the hinge 20 shown in FIG. 4, the receiving tool 29c of the hinge 20 shown in FIG. 5, etc.).

[0051] In either case, when the hinge 20 is attached to both the hanging side of the door 22 and the door frame 26 (when the door 22 is supported so that it can be opened and closed), the sagging prevention device 10 fits within the through hole 22a (Figures 4 and 5) formed in the door 22 or the door frame through hole 26a provided in the door frame 26 (Figure 4) and plays a role in supporting the load of the door 22.

[0052] Finally, the operation of the sagging prevention device 10 of this embodiment will be described. Here, an example will be described in which a door 22 is supported using two hinges 20 as shown in Fig. 1. Two cylindrical projections 30 are provided on the door side member 23 of each hinge 20, and a sagging prevention device 10 is attached to each cylindrical projection 30.

[0053] FIG. 6 is an explanatory diagram of a case where two sagging prevention devices 10 of an upper hinge 20A and two sagging prevention devices 10 of a lower hinge 20B are attached in an orientation in which the thick portions 13a are on the upper side.

[0054] When the sagging prevention devices 10 are installed under these conditions, as shown in Figure 7, the two sagging prevention devices 10 attached to the upper hinge 20A and the two sagging prevention devices 10 attached to the lower hinge 20B apply a force in a lifting direction to the door 22, lifting the entire door 22 upward, preventing contact between the floor surface F and the door 22. As a result, sagging on the door edge side can be prevented.

[0055] In FIG. 7, the dashed line indicates the position of the door 22 when a conventional cylindrical gasket E2 is used, and the solid line indicates the position of the door 22 when the drip prevention device 10 is installed under the conditions of this usage example.

[0056] Figure 8 is an explanatory diagram showing the case where the two sagging prevention devices 10 of the upper hinge 20A are installed with the thick portion 13a facing the hanging side, and the two sagging prevention devices 10 of the lower hinge 20B are installed with the thick portion 13a facing the door edge side.

[0057] When the sagging prevention devices 10 are installed under these conditions, as shown in Figure 9, the two sagging prevention devices 10 attached to the upper hinge 20A apply a force pushing the upper side of the door 22 toward the hanging point, and the two sagging prevention devices 10 attached to the lower hinge 20B apply a force pushing the lower side of the door 22 toward the door edge, lifting the door edge upward and effectively preventing sagging on the door edge side.

[0058] In FIG. 9, the dashed line indicates the position of the door 22 when a conventional cylindrical gasket E2 is used, and the solid line indicates the position of the door 22 when the drip prevention device 10 is installed under the conditions of this usage example.

[0059] Note that the example of use of the sagging prevention device 10 shown here is just one example, and the orientation of each sagging prevention device 10 can be in a direction other than that of the above-mentioned usage example, so long as a force is applied in a direction lifting the lower end of the door edge.

[0060] As described above, when the door 22 is supported using the hinges 20 equipped with the sagging prevention devices 10, the hanging side of the door 22 is attached to the door frame 26 by multiple hinges 20 (two in the example of Figures 6 to 9), and the action of the sagging prevention devices 10 provided on each hinge 20 results in a door support structure that prevents sagging on the door end side of the door 22.

[0061] In such a door support structure, the sagging prevention effect of the door 22 is significantly exhibited when the two sagging prevention devices 10 of the upper hinge 20A and the two sagging prevention devices 10 of the lower hinge 20B are arranged so that the thick portions 13a are positioned on the upper and lower upper sides of the door 22, as in Figure 6, or when the two sagging prevention devices 10 of the upper hinge 20A are arranged so that the thick portions 13a are positioned on the hanging side of the door 22, and the sagging prevention device 10 of the lower hinge 20B is arranged so that the thick portions 13a are positioned on the door tip side of the door 22, as in Figure 8.

[0062] It should be noted that the embodiments disclosed in this application are merely examples and are not intended to provide a basis for limiting the technical scope of the present invention. The technical scope of the present invention is specified based on the claims. The technical scope of the present invention includes the equivalents of the claims. [Industrial Applicability]

[0063] The sagging prevention device, hinge, and door support structure of the present invention can be suitably used in applications for preventing sagging at the door tip side of various hinged doors. [Explanation of symbols]

[0064] 10. Dripping prevention device 11 Main unit 12 Insertion hole 13a Thick wall part 13b Thin wall part 14 Landmark 20 Hinge 20A Upper hinge (top hinge) 20B Lower hinge (bottom hinge) 21 Base side member 21a Base side substrate 21b Base side cam member 21c Fixed part 21d Cylindrical part 21e Through hole 22 Door 22a Through hole 23 Door side member 23a Door side base 23b Door side cam member 23c Fixed part 23d Cylindrical part 23e Through hole 24 Shaft member 25 Door retaining member 25a Plate packing 25c clamping piece 25d Fixing screw 25e Washer 25f Cover 26 Door Frame 26a Door frame through hole 27 Base side back plate 28 Door side back panel 29a Locking screw 29b Set screw 29c Support 30 Cylindrical protrusion CP1 Center point of the body CP2 Center point of insertion hole IE1 First inner virtual line IE2 Second inner virtual line L1 Virtual center line OE1 First peripheral virtual line OE2 Second outer virtual line P1 Outer rim top P2 Inner periphery top P3 Bottom of outer periphery P4 Bottom of inner periphery T1 (thick part) thickness T2 (thin part) thickness A Base side material A1 Door side base A2 Door side cam part B Door C Door side material C1 Base side substrate C2 Base side cam member C3 Screw receiving part C4 Fixed part D Shaft member E Door retaining material E1 Plate packing E2 Cylindrical packing E3 Clamping piece E4 Fixing screw E5 washer E6 Cover F Floor

Claims

1. A member used by being attached to a hinge having a cylindrical protrusion, The main body is provided with an insertion hole through which the cylindrical protrusion is inserted, The insertion hole is provided at a position eccentric to the center of the main body, A thick-walled portion and a thin-walled portion are provided at positions on either side of the insertion hole of the main body, A sagging prevention device characterized by:

2. The sagging prevention device according to claim 1, There is a mark on the front of the unit. A sagging prevention device characterized by:

3. The sagging prevention device according to claim 2, The mark is located on the thick part of the front of the main body. A sagging prevention device characterized by:

4. In hinges that are attached to the door frame and the door base, A cylindrical protrusion; A sagging prevention device is provided which is used by covering the outside of the cylindrical protrusion, The sagging prevention device is the sagging prevention device according to claim 1. A hinge comprising:

5. 5. The hinge of claim 4, A base side member fixed to the door frame; A door side member fixed to the door; a shaft member that is inserted into the base member and the door member, The cylindrical protrusion is provided on the base side member or the door side member, or on a member used to fix the base side member to a door frame or a member used to fix the door side member to a door, A hinge comprising:

6. In a support structure for a door that opens and closes an opening, The door hinge and the door frame are connected by two or more hinges, including at least an upper hinge and a lower hinge. The hinge is the hinge according to claim 4 or 5. A door support structure characterized by:

7. The door support structure according to claim 6, The sagging prevention device of the upper hinge and the sagging prevention device of the lower hinge are provided so that the thick parts are located on the upper and lower upper sides of the door. A door support structure characterized by:

8. The door support structure according to claim 6, The sagging prevention device for the upper hinge is installed so that the thick part is located on the door hanging side, The sagging prevention device for the lower hinge is installed so that the thick part is located on the door edge side. A door support structure characterized by:

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