JPH0619038Y2 - Gate wheel device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a wheel device for a gate, and is particularly suitable for a gate having a pantograph-type expansion / contraction mechanism.

2. Description of the Related Art Wheel devices for gates of this type are roughly classified into so-called rail-type and caster-type wheels. The former has a guide rail laid on the construction surface and a wheel attached to the lower part of the door body. The latter is one in which a swingable wheel is provided in the lower part of the door body, the installation surface is smooth, and it can be opened and closed while rotating the door body, and each has advantages and disadvantages. Both methods are widely adopted.

Problems to be solved by the invention When the gate is constructed as a rail type, a wheel device that keeps the wheels in a fixed direction is desired, and when the gate is used as a caster type, swinging the door body Flexible wheels need to be provided.

Due to such a difference in the type of the wheel device, it is inevitable to manufacture two types of gates using the same door body in advance, and therefore, manufacturing, transportation, storage and the like are very complicated.

Means for Solving the Problems In view of such a situation, the inventors of the present invention have studied a device for easily converting a wheel device to a rail type or a caster type at a gate construction site, and as a result, have decided to use a pantograph type expansion mechanism. In the lower part of the door that can be opened and closed in the left and right direction,
In addition, at the front and rear positions orthogonal to the opening / closing direction of the door body, swingable wheels that are horizontally rotatable around the swingable rotation portion are provided as a pair, and both swingable wheels are provided between the swingable wheels. In order to achieve the intended purpose, a connecting rod having a length that regulates in parallel is laid horizontally, and both ends of the connecting rod are detachably attached to the wheel receiver of the swingable wheel. is there.

In order to detachably attach the connecting rod to the wheel receiver, screwing is generally used, but a pin may be detachably attached.

Example The drawings show a gate provided with a pantograph-type expansion / contraction mechanism that can be opened and closed in the left-right direction. The crossing of diagonal members (1) (1) ... and diagonal members that are inclined at equal angles in opposite directions. A pair of vertical bars (2) (2) are arranged on the front and rear outer sides orthogonal to the opening and closing direction of the door body at the position, and the intersection of the diagonal members (1) (1) and the diagonal members (1) (1) And vertical bars
(2) A pin shaft is provided between (2), and a wheel pedestal (3) is fixed to the lower end of the pair of vertical bars (2) (2) at an appropriate position of the door body. It is a wheel device.

The wheel device shown in FIGS. 1 and 2 has a wheel base.
Wheels (4) and (4) which can be horizontally rotated about the swinging rotation part (13) are fixed to the front and rear projections of (3), and a wheel receiver ( Through hole (6) in the middle upper part of 5)
Wheels (4) and (4) that swing freely on both sides by forming a protrusion (7) with
The connecting rod (8) is inserted into the through holes (6) (6), and the wheels (9) (9) at the front and rear positions are screwed to the ends of the connecting rod in parallel positions.

FIGS. 3 to 4 show swingable wheels (4) (4) at the front and rear projecting ends of a wheel base (3) which is orthogonal to the opening and closing direction of the door body.
In the wheel device in which the wheel is fixed, the protrusions formed by bending both ends of the connecting rod (8) downward and at the middle upper part of the wheel support (5)
Fit the (10) and the engagement hole (11) formed in the connecting rod (8),
Both ends of the connecting rod (8) are screwed to the axles of the wheels (9) so that the swingable wheels (4) (4) are present in parallel.

In the wheel device shown in FIGS. 5 to 6, the swingable wheel (4) is fixed to the front and rear projecting end portions of the wheel base (3) which is orthogonal to the opening / closing direction of the door body. Screw holes (12) on the pedestal mounting side of (5) and screw both ends of the connecting rod (8) to the screw holes (12) and (12) of the wheel support (5) and (5) respectively. The movement of the swingable wheels (4) (4) is restricted.

Effect of the Invention According to the present invention, the connecting rod is detachably provided between the swingable wheels at the front and rear positions of the wheel device. For example, the product shipped from the factory is placed with the connecting rod attached. Therefore, if the installation site uses the rail type as it is, it can be applied as it is, and in the case of the caster type, the usage mode can be changed very easily by removing the connecting rod, which can significantly simplify the production process. In addition, physical distribution aspects such as transportation and storage can be dramatically streamlined.

In addition, the wheels that can swing freely are fixed by the connecting rod, and the wheels at the front and rear positions are made parallel to each other and engaged with the guide rails, etc., so that the lateral swing of the door can be prevented and the opening and closing operations can be smoothly performed. is there.

[Brief description of drawings]

FIG. 1 is an enlarged side view of an essential part showing an example of a wheel device for the main gate, which is partially omitted, FIG. 2 is a front view of the same, and FIG. 3 is an essential part showing another example of a wheel device for the main gate. FIG. 4 is an enlarged side view, FIG. 4 is also a front view, FIG. 5 is an enlarged side view of an essential part of another example of the wheel device of the present invention, FIG. 6 is a front view, and FIG. FIG. 4 is a perspective view of a telescopic gate, in which (4) is a swingable wheel, (5) is a wheel holder,
(8) is a connecting rod, (9) is a wheel, and (13) is a swinging / rotating part.

Claims (1)

[Scope of utility model registration request] 1. A lower part of a door body provided with a pantograph type expansion / contraction mechanism that can be opened and closed in the left-right direction, and is horizontally rotated around a swinging rotation part at a front-back position orthogonal to the opening / closing direction of the door body. The movable swingable wheels are provided as a pair, and a connecting rod having a length that regulates the free swingable wheels in parallel is horizontally installed between the swingable wheels, and both ends of the connected rod are necked. A wheel device for a gate, which is detachably attached to a wheel receiver of a swingable wheel.