JPH0452400Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is for gates used in wide openings.
To provide a door having a structure that takes full advantage of the characteristics of the material, achieves low cost and a wide range of application due to a simple structure, and allows the door to descend gently to prevent danger when it falls on the closing side.

Generally speaking, in the case of a door with a wide frontage such as a garage, which may give a moderate sense of openness, the purpose can be achieved by expressing the presence of a partition. The selection criteria is often based on factors such as low price, long life, no danger in opening and closing operations, ease of operation, and the ability to keep hands clean.

A basic embodiment of the present invention will be explained with reference to FIG. In the figure, reference numeral 1 denotes a door body (hereinafter referred to as a gate), which is usually manufactured by molding a pipe as shown in the figure to have an arm 1-1 bent at a nearly right angle.
The pipe is sufficiently thick and thin-walled to reduce weight. 2 is the gate pillar that supports the gate, 3
4 is a stopper that determines the closed position of the gate, and 4 is a damper, which is connected to arm 1-1 of the gate with link 5, so that it does not provide resistance when the gate rises, but applies damping only when it descends, allowing it to fall gently. The damper also has the function of minimizing the impact at the final position by giving a higher damping rate only in a small section at the end of the fall. You can imagine that it is used for position. As long as the descending speed is within a safe range, some variation due to temperature, etc. is allowed, so a compact and inexpensive damper with a hydraulic dart pot mechanism is most suitable. FIG. 1A shows a cross section of the joint between the arm 1-1 and the gate post 2. There is a firmly fixed bearing fitting 2-1 on the top of the gate post, and two bearing hoods 6 are attached with bolts or the like. The bearings in the bearing housing receive a shaft 7, which is firmly fixed to the arm 1-1 by welding or the like, on both sides.

Since this embodiment has such a structure, it is possible to open the gate lightly and easily by lifting it by hand or with an automatic device as shown by the arrow in Figure 1. If the gate is heavy, a balance weight etc. can be used to open the gate. Use it to make it lighter. Generally, the open position can be stably maintained by setting an open position stopper (not shown) to function when the center of weight of the gate is slightly beyond top dead center. Of course,
Even during lifting of the gate, it is possible to set the position to the open position by receiving the weight of the gate by some kind of restraint mechanism. When closing, by slightly pushing the gate in the closing direction until the center of gravity of the gate passes over top dead center, the gate will close automatically at an appropriate speed with damping.
The brake is applied slightly before the closed position, and the closed position is reached at a slow speed. When the door is lowered, damping is applied, so there is no need for a person to support the door while it closes, and it is also possible to set a closing speed that prevents the door from being delayed and causing injury. The material of the arm and gate constitutes a torque tube with sufficient bending and torsional rigidity, and its fulcrum is supported by two bearings firmly supporting the gate arm across a distance, as shown in Figure 1A. Because of this, even if the gate is quite long, it will not sag due to rattling or bending, and it will withstand deformation even if force is applied to the gate body from front to back (perpendicular to the gate) or downward. Furthermore, since there is only one arm, only one damper is required, which is advantageous in terms of cost and failure. Opening and closing operations are convenient because you only have to touch the pipe, so you don't have to get your hands dirty with mud or rust or carry around loose pieces. When applied to a garage door, etc., it may be necessary to attach an anti-theft lock, but in that case, it is sufficient to lock a portion of the arm 1-1 that is a certain distance away from the center of the bearing. FIG. 1B shows the locking procedure as seen from the cross-section A-A direction of the arm 1-1. This method uses a lock 8 similar to the type of security lock that locks the spokes of a bicycle to lock the hole in the lock fitting 9 that is integrated with the arm, which is convenient because the lock itself does not become a loose piece when unlocked. It is.

An example in which the basic embodiment is applied and installed in a single-roof type carport 10 is shown in FIG. 1-1. In this way, the gate pillar can also be used as the pillar of the carport 10. In addition, as shown in Figure 1-2, since the garage space G faces a narrow road, if the part facing the road R is expanded into a triangular shape or if the garage is not perpendicular to the road, it may be necessary to This embodiment of the holding type can be applied very effectively.

A second embodiment will be explained with reference to FIG. In the figure, the names and functions of parts with the same numbers as in FIG. 1 are the same as in the basic embodiment. In the figure, a part of the gate is shown cut away, and the damper and lock are not shown.
The differences are that the gate post 2 was installed ahead of the fulcrum of the gate arm (closer to the road) in consideration of the layout, and that the gate 1 was equipped with a fence that more clearly asserts the partition when closed. This is because a type apron 11 was attached. The easiest way to weld the apron to the gate is to use a small-diameter, thin-walled pipe, etc., but when the arm is laid out diagonally downward from the fulcrum as in this example, the apron can be easily welded in the open position. It may end up facing diagonally upwards, causing interference with the roof, etc. In order to prevent this, in this embodiment, the apron is attached to the gate, and the hinge line 1 is parallel to the gate.
2, and the apron pillar 13 is used as a link structure to link with the opening and closing movement of the door, so that the apron is perpendicular to the ground in the closed position and the second
As shown in Figure A, we adopted a structure in which the apron is parallel to the ground. This operating state is shown in FIG. 2A.

Further, a third embodiment will be explained with reference to FIG.
The names and functions of parts with the same numbers as in FIG. 1 are the same. The difference between this embodiment and the basic embodiment is that there are two gate pillars on the left and right, and an auxiliary arm 14 with low lateral rigidity is attached to the opposite side of the gate arm 1-1, and the apron 11 is fixed. A support post 15 was added to strengthen the front and back, a foot 16 was added to the bottom of the apron to ground it when closed, and it also served as a stopper for the closed position, and one bearing was installed on each door pillar. . Since this embodiment has the above-described structure, the resistance force against the gate in the longitudinal direction and in the downward direction when closed is particularly strong, and it is suitable for a gate with a long span. As a supplementary explanation, the purpose of reducing the lateral rigidity of the auxiliary arm is to prevent excessive force from being transmitted to the bearing, and if the entire auxiliary arm is made from an extension of a pipe, one of the bearing holders should be attached to the shaft. It is preferable to adopt a structure with low rigidity in the core direction. In this embodiment as well, there is only one damper.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a basic embodiment of the present invention, Fig. 1A is a sectional view of the bearing part, Fig. 1B is a sectional view of the locking part, and Fig. 1-1 is an application of the basic embodiment. Figures 1-2 show top views of special embodiments; FIG. 2 is a perspective view of another embodiment, and FIG. 2A is a side view thereof. FIG. 3 is a perspective view showing yet another embodiment. 1...Gate, 1-1...Arm, 2...Gate post, 2-1...Bearing fitting, 3...Stopper, 4
...Damper, 5...Link, 6...Bearing cap, 7
...Shaft, 8...Cannula lock, 9...Lock fitting,
10... Single roof carport, 11... Apron, 12... Hinge, 13... Support (link type),
14... Auxiliary arm, 15... Pillar, 16... Foot, G... Garage space, R... Road.

Claims (1)

[Scope of utility model registration request] One member of the L-shaped large-diameter thin-walled pipe is a gate that functions as a partition when closed, and the other member is an arm that pivots the end of the pipe on a gatepost to move the gate up and down. The torque tube gate has a structure whose rigidity depends on the pipe, and when lowering the gate, the lowering speed is adjusted by a damper of a hydraulic dart pot mechanism attached to the arm.