JPS597520Y2 - door hinge - Google Patents

Description

[Detailed description of the invention] This invention relates to doors such as gates, and aims to provide an effective door that can smoothly open and close heavy doors when the center axis of rotation of the door and the floor are not at right angles. This is a design with a purpose.

In double-sided doors used for gates, etc., the upper and lower parts of one end of the door are rotatably attached to gateposts, etc. via hinges, but when the door is pivoted with hinges in this way, the door is heavy and In particular, when the door is wide, wheels are attached to the bottom of the door on the opposite side of the hinges, and the wheels run on arcuate rails laid on the floor to support the weight of the door.

However, as shown in Fig. 1, when the floor 1 is sloped for draining etc., the distance H (Fig. 1) between the lower end of the door 2 and the floor 1 changes as the door opens and closes. This can cause the wheels to separate from the rails and become unable to support the weight of the door.

If the wheels float in this manner, a shearing force from the heavy door acts on the hinges 3 and 4 as shown by the arrows in FIG. 1, which not only damages the hinges but also causes deformation of the door.

In order to eliminate this inconvenience, the rails 6 must be raised above the floor so that they are always in contact with the wheels 5, as shown in Figure 2. The door according to the present invention, which is undesirable because it obstructs the running of vehicles, impairs water drainage, and impairs the aesthetic appearance, is intended to eliminate the above-mentioned inconveniences.

The present invention will be described below with reference to drawings showing embodiments.

FIG. 3 shows a hinge attached to the door 2 of the present invention.

The lower hinge attached to the lower part of the door 2 has a bearing body 7 fixed to the lower surface of the door 2, and a shaft 9 that is planted on the floor near the gatepost 8 and supports the bearing body 7 so as to be able to tilt slightly. It is empty.

In the illustrated example, the shaft 9 is tapered so that the upper part becomes thinner, and the upper end part 9a and the bearing body 7 that abuts on the upper end part 9a.
The bearing surface 7a has a spherical shape so that the bearing body 7 can easily tilt with respect to the shaft 9.

The upper hinge attached to the upper part of the door 2 has a long hole 10a as shown in FIG. The shaft 12 protrudes from the shaft 12 and fits into the long hole 10a.

A wheel 5 is attached to the lower surface of the other end of the door to which such a hinge is attached, as shown in FIGS. 5 and 6.

Therefore, even if the floor surface 1 has a drainage slope as shown in FIG. As shown in FIGS. 5 and 6, it is always parallel to the floor surface 1.

Therefore, the wheels 5 are always in contact with the rails 6 and can support the weight of the door.

In the above embodiment, the upper and lower bearing bodies 10 and 7 are connected to the door 2, respectively.
Although an example is shown in which they are fixed to the upper and lower surfaces of the door 2, it goes without saying that they may be attached to the side surface of the door 2 as shown in FIG.

It can also be used when the rails 6 are omitted and the wheels 5 are brought into direct contact with the floor.

Since the door according to the present invention is constructed and operates as described above, (1) Even when the floor surface is inclined, no excessive force is applied to the hinges, and the door is durable.

(2) Adjustment during installation is easy.

(3) There is no need to protrude rails from the floor surface, so the aesthetics are not compromised.

(4) Even if the rubber tires on the wheels wear out with use, they can be automatically adjusted.

This has great practical effects.

[Brief explanation of drawings]

Figures 1 and 2 show side views of conventional doors, Figure 1 is a side view when installed on a sloped floor, and Figure 2 is a side view of the door shown in Figure 1 with wheels and rails attached. Figures 3 to 7 show an embodiment of the present invention, Figure 3 is a longitudinal side view of the hinge attached to the door, Figure 4 is a sectional view taken along line A-A in Figure 3, and Figure 5 is a floor view. A side view similar to Figure 1 showing the state of the door when the surface is down, Figure 6 is a similar side view when the floor is raised, and Figure 7 is a schematic diagram showing another embodiment. FIG. 5: Wheel, 7: Bearing body, 9: Shaft, 10: Bearing body, 11:
Metal fittings, 12: Axis.

Claims (1)

[Scope of utility model registration request] A shaft 1 fixed vertically to a metal fitting 11 attached to a gatepost etc.
2 and a long hole 10a that is long in the direction of the door and that engages with the shaft 12.
A bearing body 10 having a bearing body 10 having a shaft 9 and a lower hinge that engages with the shaft 9 so as to be slightly tiltable with respect to the shaft 9 are provided on one side, This door is provided with a wheel 5 that can rotate in the rotation direction of the door on the lower surface of the other side.