JPH057438Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a flip-up gate, and is particularly suitable for use at the entrance and exit of a garage.

Prior Art One end of a support member is connected to the upper side of a door body, the other end of this support member is rotatably mounted on a column, and a spiral spring, coil spring, or gas spring is attached to the pivot shaft of the support member. Flip-up gates with spring bias are widely known.

Problems that the invention aims to solve: However, as shown in Figure 3, this type of gate has a structure in which the support member is perpendicular to the upper part of the door body, so the weight of the gate body and the support member is The generated rotational moment does not change linearly in proportion to the vertical opening of the door body, as shown in FIG.

Therefore, it is not possible to match the rotational moment proportional to the pivot axis of the support member generated by the spring when the door body is opened and closed with the rotational moment that shows a secondary change due to the weight of the door body and support member. If the rotational moment generated by the spring exceeds the rotational moment due to the weight of the door body and support member, the door body will spring up abnormally, and conversely, the rotational moment of the door body and support member will exceed the rotational moment of the support member due to the spring. If the door is larger, the door body will drop suddenly, making it impossible to open and close the door smoothly, and requiring a complicated brake mechanism. (Refer to Japanese Unexamined Patent Publication No. 62-72879.) Means for Solving the Problem The inventors of the present invention have conducted extensive studies in view of the above circumstances, and as a result, the present inventors have installed a support member 2 on the upper side of the door body 1.
2 and the other end of the support member 2 is connected to the support column 3.
In the flip-up type gate, which is rotatably mounted on a shaft and a spring 5 applies a biasing force to a pivot shaft 4 of a support member 2, the connecting portion between the door body 1 and the support member 2 is rotatably mounted. , a link mechanism 6 consisting of a horizontal auxiliary link 7 and a vertical auxiliary link 8, one end of the horizontal auxiliary link 7 is rotatably pivoted to the middle side of the door body 1, and one end of the vertical auxiliary link 8 is pivotally supported. A guide groove 1 of a guide plate 10 in which a guide pin 9 is rotatably provided on the shaft 4 and fixed to the horizontal auxiliary link 7 is fixed to the support column 3.
It has been found that by loosely fitting the door body 1 into the door 1 and moving the door body 1 up and down while moving it toward the support column, the door body can be opened and closed smoothly without necessarily using a complicated brake mechanism.

The gate shown in the drawing has a pulley 12 on the pivot shaft 4.
is fixed, and a wire rope 13 connected to a tension coil spring is wound around it to apply a spring biasing force to the pivot shaft. As means for providing this, various forms are possible, such as a method using a compression coil spring, a method using a spiral spring, or a method using a gas spring.

The shape of the guide groove 11 in the flip-up type gate of the present invention is such that the gate body 1 has a shape relative to the support members 2, 2 in order to linearly change the rotational moment due to the weight of the gate body and the support member according to the opening degree θ of the gate body. It is not possible to calculate in advance how much the should be rotated toward the support column, but at that time, it is not possible to analyze and specify the trajectory drawn by the guide pin 9 attached to an arbitrary point on the horizontal auxiliary link 7. A horizontal bent part 14 is formed at the upper end of the guide groove 11, and the opening degree θ can be adjusted by moving the door body 1 upward.
When the angle reaches 90°, the guide pin 9 of the horizontal auxiliary link 7 should fit into the horizontal bent portion 14 of the guide groove 11 to stably support the door body.

Function According to this invention, the connecting part between the door body and the support member is made rotatable, and a link mechanism consisting of a horizontal auxiliary link and a vertical auxiliary link is provided between the door body and the pivot shaft. When moving the door up and down, the door body can be moved toward the support column with respect to the support member.A guide groove of a predetermined shape is formed in the guide plate fixed to the support column, and a guide pin fixed to the horizontal auxiliary link is attached to the guide groove. By fitting, it is possible to specify the moving distance of the door body and match the biasing force of the spring with the rotational moment of the door body at a given opening degree.

Effects of the invention According to this invention, the opening and closing operations of the door body can be performed extremely smoothly, and since a complicated brake mechanism is not required, labor for manufacturing and repairing can be significantly reduced.

In addition, according to the proposed gate, the door body is moved toward the pillar side when the door is opened and closed, so it is safe because it does not protrude greatly toward the road.

[Brief explanation of the drawing]

Figure 1 is a side view showing an example of the proposed flip-up type gate, Figure 2 is an enlarged cross-sectional view of the main part with some parts missing, and Figure 3 is a side view of the existing flip-up type gate.
Figure 4 is also a diagram showing the relationship between the opening degree of the door body and the rotational moment of the door body part, in which 1 is the door body, 2
is a support member, 3 is a column, 4 is a pivot shaft, 5 is a spring,
6 is a link mechanism, 7 is a horizontal auxiliary link, 8 is a vertical auxiliary link, 9 is a guide pin, 10 is a guide plate,
11 represents a guide groove.

Claims (1)

[Claims for Utility Model Registration] (1) Connecting one end of the support member to the upper side of the door body,
The other end of the support member is rotatably mounted on a pillar,
In a flip-up gate that applies a spring force to the pivot shaft of the support member, the joint between the gate body and the support member is rotatably attached, and the link mechanism consisting of a horizontal auxiliary link and a vertical auxiliary link is horizontally attached. One end of the auxiliary link is rotatably attached to the middle side of the door body, and one end of the vertical auxiliary link is rotatably attached to the pivot shaft, and the guide pin fixed to the horizontal auxiliary link is attached to the support. A flip-up type gate that fits loosely into the guide groove of a fixed guide plate and moves up and down while moving the door body toward the support. (2) Scope of utility model registration claim (1) in which a horizontal bent portion is formed at the upper end of the guide groove in the guide plate.
The flip-up gate described in .