JP7664955B2 - Hinge holder and swing door structure using same - Google Patents

Description

The present invention relates to a hinge holder used when attaching a hinge for mounting a swing door to an opening in a building, and a swing door structure using the same.

In a swing door structure where a swing door is installed in an opening in a building, a hinge for attaching the swing door (door) is attached to the wooden door frame that forms the inside of the opening. Conventionally, this hinge was fixed directly to the door frame using wood screws, etc., but there was a problem that the hinge would loosen after the swing door was repeatedly opened and closed.
In order to solve this problem, the following Patent Document 1 (Japan Patent Publication No. 2009-155995) discloses a technology in which a through hole is drilled in the door frame for a screw, and a countersunk nut is embedded in the back end of the through hole on the back side of the door frame as a screw receiver, and the countersunk nut (= hinge holder) is used with a screw to clamp the hinge together with the door frame from the front and back.

This conventional technology makes it possible to build a swing door structure in which the hinges will not come loose, even if the door frame is made of a wood material with relatively weak screw retention, such as MDF (medium-density fiberboard).

JP 2009-155995 A

However, the following problem has become evident in the above-mentioned conventional technology. Door frames used indoors are often made of wood or wood-based materials, but when door frames are made of wood-based materials such as MDF, they dry out and shrink (thinn) over time. This causes a gap of, for example, 1 mm to 1.5 mm between the hinge and the door frame, causing the hinge attached to the door frame to become wobbly or loose. If the swing door is repeatedly opened and closed in such a state and vibrations are continuously applied, in the worst case scenario, the screws fixing the hinge may come loose.
Therefore, the main object of the present invention is to provide a hinge holder capable of firmly holding a hinge without creating a gap between the hinge and the door frame even if the door frame shrinks and becomes thin due to drying caused by long-term use. A further object of the present invention is to provide a swing door structure using such a hinge holder capable of stably holding a swing door for a long period of time.

In order to achieve the above object, the present invention provides a hinge holder 10 configured as follows, as shown in, for example, FIGS.
That is, when a hinge 14 for mounting a swing door is attached to the front side of a door frame 12a of an opening 12 provided in a wall W, the hinge holder 10 is disposed on the back side of the door frame 12a and is used to clamp the door frame 12a from both the front and back sides together with the hinge 14, and is characterized in having a plate-shaped base portion 18 provided with a female screw 18a that screws into the tip of a screw 16 used when attaching the hinge 14 to the front side of the door frame 12a, a plate-shaped frame material abutment portion 20 that abuts against the back side of the door frame 12a, and a spring portion 22 that connects the base portion 18 and the frame material abutment portion 20 and presses the frame material abutment portion 20 toward the back side of the door frame 12a.

In the present invention, the spring portion 22 presses and urges the frame material abutment portion 20 toward the back side of the door frame 12a, while at the same time the base portion 18 constantly pulls the hinge 14 toward the back side of the door frame via the screw 16 screwed into the female thread 18a. Therefore, even if the door frame 12a shrinks (becomes thinner) due to aging, it is possible to prevent a gap from occurring between the hinge 14 and the door frame 12a.

In the present invention, it is preferable that a plurality of the female threads 18a are provided, and more preferably, the female threads 18a are arranged in a staggered pattern when viewed from the front with the hinge holder 10 attached to the rear surface of the door frame 12a.

A hinged door structure according to a second aspect of the present invention uses the above-mentioned hinge retainer 10 and is configured, for example, as follows (see FIG. 1).
That is, in a hinged door structure S in which a hinged door D is attached so as to be freely opened and closed via a hinge 14 attached to the front side of a door frame 12a of an opening 12 in a wall W, when the hinge 14 is attached to the front side of the door frame 12a, a hinge holder 10 is used which is disposed on the back side of the door frame 12a and which comprises a plate-shaped base portion 18 provided with a female screw 18a which screws into the tip of a screw 16 used when attaching the hinge 14 to the front side of the door frame 12a, a plate-shaped frame material abutment portion 20 which abuts against the back side of the door frame 12a, and a spring portion 22 which connects the base portion 18 and the frame material abutment portion 20 and presses and biases the frame material abutment portion 20 toward the back side of the door frame 12a.

According to the present invention, it is possible to provide a hinge holder that can firmly hold a hinge without creating a gap between the hinge and the door frame, even if the door frame shrinks and becomes thinner due to drying that accompanies long-term use. In addition, it is possible to provide a hinge door structure that uses such a hinge holder and can stably hold a hinged door for a long period of time.

1 is a schematic diagram showing an example of a hinge door structure using the hinge holder of the present invention. 1 is an explanatory diagram showing a usage mode of a hinge holder according to an embodiment of the present invention. FIG. 10 is an explanatory diagram showing an example of the function of the hinge holder in the present invention. FIG. 3 is a view showing a manner in which the hinge holder is attached to the door frame in FIG. 2 as viewed from the direction of arrow A. FIG. FIG. 11 is an explanatory diagram showing a usage mode of a hinge holder according to another embodiment (separate leaf spring type) of the present invention. FIG. 11 is an explanatory diagram showing a usage mode of a hinge holder according to another embodiment (separate coil spring) of the present invention. 7A and 7B are explanatory views showing a usage mode of a hinge holder according to another embodiment of the present invention, FIG. 7A showing a cantilever type with an integrated spring portion, and FIG. 7B showing a bridge type with an integrated spring portion.

The following describes an embodiment of the present invention with reference to the drawings. Figure 1 is a schematic diagram showing an example of a hinged door structure S using the hinge holder 10 of the present invention. Also, Figure 2 is an explanatory diagram showing the use of the hinge holder of one embodiment of the present invention. As these figures show, the hinged door structure S of this embodiment is roughly composed of a door frame 12a attached to the inner surface of an opening 12 in a wall W of a building, a hinge 14 attached to the door frame 12a, a hinge holder 10 used to cooperate with the hinge 14 to sandwich the door frame 12a from both the front and back, and a hinged door D attached to the opening 12 via the hinge 14 so as to be freely opened and closed.

Of these, the door frame 12a attached to the inner surface of the opening 12 is composed of a pair of left and right vertical frame members 12a1 and an upper frame member 12a2 that is installed on the upper end of the vertical frame members 12a1. When these vertical frame members 12a1 and upper frame members 12a2 are used indoors, they are generally made of wood such as solid wood or laminated wood, or wood materials such as plywood, laminated veneer lumber (LVL), particleboard (PB), oriented strand board (OSB), MDF, and high-density fiberboard (HDF).
Furthermore, among the openings 12 in a building, the openings 12 used for entering and exiting a room usually have a hinged door D attached via a hinge 14 to one of a pair of left and right vertical frame members 12a1 of the door frame 12a.
In addition, reference numeral 12b in FIG. 1 denotes a "door stopper" that is provided as necessary.

In the swing door structure S of the present invention, a hinge holder 10 is used to attach the hinge 14 described below to the door frame 12a, so a recess 13 for attaching the hinge holder 10 is provided on the back side of the hinge 14 attachment position on the door frame 12a, and a screw insertion hole 13a is drilled in a predetermined position to insert a screw 16 (see Figure 2).

The hinge 14 is a metal fitting for attaching the hinged door D to the door frame 12a so that it can be opened and closed freely, and is composed of a frame-side mounting piece 14a that is attached to the door frame 12a (more specifically, one of the vertical frame members 12a1) of the opening 12, and a door panel-side mounting piece 14b that is attached to the hinged door D (door panel). Of these, the frame-side mounting piece 14a is provided with a plate-shaped frame fixing part 14x that is fixed to the front side of the door frame 12a, and one or more (five in the embodiment shown in Figure 2) screw holes 14y are drilled at predetermined positions in the frame fixing part 14x.

The hinge holder 10 is a metal fitting used to fix (attach) the hinge 14 to the front side of the door frame 12a. It is disposed on the back side of the door frame 12a and is used to sandwich the door frame 12a from both the front and back sides with the hinge 14. As shown in Figure 2, the hinge holder 10 is roughly composed of a base portion 18, a frame material abutment portion 20, and a spring portion 22.

The base portion 18 is a plate-like portion provided with a female screw 18a that screws into the tip of the screw 16 used to attach the hinge 14 to the door frame 12a. The frame material abutment portion 20 is a plate-like portion that abuts against the rear surface of the door frame 12a. This frame material abutment portion 20 is provided with a screw hole 20a through which a wood screw 24 for fixing the frame material abutment portion 20 to the rear surface of the door frame 12a is inserted as necessary (see FIG. 2). The spring portion 22 is a member that connects the base portion 18 and the frame material abutment portion 20, and presses and urges the frame material abutment portion 20 against the rear surface of the door frame 12a when the hinge 14 is fixed by sandwiching it from the front and back together with the door frame 12a using the screw 16 and the hinge holder 10.

In the embodiment shown in FIG. 2, a rectangular piece of a predetermined size is cut out from a metal plate made of, for example, SUS, iron, brass, etc., and the cut rectangular piece is slit, bent, drilled, tapped, etc. to manufacture a hinge holder 10 in which multiple base portions 18, multiple frame material abutment portions 20, and multiple spring portions 22 are integrally formed. Therefore, the portion bent by bending becomes the spring portion 22 that functions as a "leaf spring". Note that the method of processing the rectangular piece cut out to a predetermined size and forming it into the hinge holder 10 is not limited to the above various processes (combinations), and for example, the hinge holder 10 may be formed in one go by pressing using a mold. Of course, during this processing, the bent portion that functions as a "leaf spring" becomes the spring portion 22.

When attaching a hinge 14 to a door frame 12a using the hinge holder 10 configured as described above, first, the hinge holder 10 is positioned within the recessed portion 13 on the back surface of the door frame 12a. At this time, the position of the screw insertion hole 13a of the door frame 12a is aligned with the position of the female screw 18a of the hinge holder 10, and then the frame material abutment portion 20 is screwed to the back surface of the door frame 12a (more specifically, the bottom surface of the recessed portion 13) using a wood screw 24.
Then, the hinge 14 (more specifically, the frame material side mounting piece 14a) is placed at a predetermined position on the front surface of the door frame 12a, a screw 16 is passed through the screw hole 14y and the screw insertion hole 13a, and the tip of the screw 16 is screwed into the female thread 18a formed on the base portion 18 of the hinge holder 10, thereby completing the attachment of the hinge 14 to the door frame 12a.

According to the hinge holder 10 of this embodiment, as shown in FIG. 3, for example, the spring portion 22 presses and urges the frame material abutment portion 20 toward the rear surface of the door frame 12a, while at the same time the base portion 18 constantly pulls the hinge 14 toward the rear surface of the door frame 12a via the screw 16 threaded into the female thread 18a. Therefore, even if the door frame 12a shrinks (becomes thinner) due to aging, it is possible to prevent a gap from occurring between the hinge 14 and the door frame 12a.

In addition, in the hinge holder 10 of this embodiment, as shown in Figure 4, it is preferable that the area of the frame material abutment portion 20 (lightly shaded portion in the figure) accounts for 50% or more of the surface area (horizontal projection area) of the hinge holder 10 when attached to the back surface of the door frame 12a. This makes it possible to prevent the compressive stress applied from the frame material abutment portion 20 to the back surface of the door frame 12a from concentrating in a narrow area, and as a result, it is possible to mitigate (delay) the compression and shrinkage of the contact points of the door frame 12a with the frame material abutment portion 20.

Furthermore, in the embodiment shown in FIG. 2, the female threads 18a that screw into the screws 16 are arranged in a staggered pattern in plan view. Here, the hinge 14 attached to the door frame 12a is subjected to a moment at the frame fixing portion 14x due to the weight of the swing door D attached to the hinge 14, but by arranging the female threads 18a in a staggered pattern in plan view as described above, the hinge 14 can continue to be firmly fixed to the door frame 12a against such moment.

In the above embodiment, the hinge holder 10 is formed by processing a rectangular piece cut to a predetermined size from a metal plate to form a plurality of base portions 18, a plurality of frame material contact portions 20, and a plurality of spring portions, which are integrally formed. However, as shown in FIG. 5, for example, the surface (one side) of the base portion 18 may be combined with the frame material contact portions 20 and the spring portions 22 formed separately.

In the above embodiment, the spring portion 22 is formed as a "leaf spring" by bending a metal plate and utilizing the elastic recovery force of the metal plate. However, the "spring" forming the spring portion 22 is not limited to this. For example, as shown in FIG. 6, a "coil spring" may be used as the spring portion 22.

Furthermore, in the above embodiment, a case where a plurality of base parts 18, frame material contact parts 20, and spring parts 22 are provided for one hinge holder 10 is shown, but the number of each part provided for one hinge holder 10 is not limited thereto, and for example, as shown in Fig. 7A, a plurality of base parts 18 and spring parts 22 may be provided for one frame material contact part 20 (cantilever type spring part integrated type), or as shown in Fig. 7B, one base part and frame material contact part 20 may be connected by a plurality of spring parts 22 (two spring parts 22 connected in a bridge shape; bridge type spring part integrated type). Even when only one base part 18 is provided as in Fig. 7B, it is preferable to arrange a plurality of female screws 18a in a staggered pattern on the base part 18.
Of course, various other modifications can be made within the scope of what a person skilled in the art can imagine.

10: hinge holder, 12: opening, 12a: door frame, 14: hinge, 16: screw, 18: base part, 18a: female screw, 20: frame material abutment part, 22: spring part, W: wall, D: swing door, S: swing door structure.

Claims (4)

A hinge holder is disposed on the back side of the door frame (12a) when attaching a hinge (14) for mounting a swing door to the front side of the door frame (12a) of an opening (12) provided in a wall (W) and is used to clamp the door frame (12a) from both the front and back sides with the hinge (14),
a plate-shaped base portion (18) provided with a female screw (18a) that screws into the tip of a screw (16) used to attach the hinge (14) to the front surface side of the door frame (12a);
A plate-shaped frame material abutment portion (20) that abuts against the back surface of the door frame (12a);
a spring portion (22) that connects the base portion (18) and the frame material abutment portion (20) and presses the frame material abutment portion (20) against the back surface of the door frame (12a). The hinge holder of claim 1,
A hinge retainer characterized in that a plurality of the female screws (18a) are provided. The hinge holder of claim 2,
The hinge retainer is characterized in that the female screws (18a) are arranged in a staggered pattern when viewed from the front in a state where the hinge retainer is attached to the rear surface of the door frame (12a). In a hinged door structure in which a hinged door (D) is attached so as to be freely opened and closed via a hinge (14) attached to the front side of a door frame (12a) of an opening (12) in a wall (W),
A hinge structure characterized in that when attaching the hinge (14) to the front side of the door frame (12a), a hinge holder (10) is used that is disposed on the back side of the door frame (12a), the hinge holder (10) comprising: a plate-shaped base portion (18) provided with a female screw (18a) that screws into the tip of a screw (16) used when attaching the hinge (14) to the front side of the door frame (12a), a plate-shaped frame material abutment portion (20) that abuts against the back side of the door frame (12a), and a spring portion (22) that connects the base portion (18) and the frame material abutment portion (20) and presses and urges the frame material abutment portion (20) toward the back side of the door frame (12a).

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