JPH0446077Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a flip-up gate, and particularly relates to an improved structure for attaching the gate to a support.

[Conventional technology and problems to be solved]

Conventionally, gates have been known to be mechanically attached to posts via arms and rotated up and down to flip up and open/close, but there are technical difficulties in the biasing means for flipping up the gates. , and even if a biasing force is applied with a spring or the like, the weight will vary depending on the design of the gate.
There is a problem in that product management is complicated because several types of springs with different elasticities have to be used, and furthermore, the biasing force weakens with long-term use, making it difficult for the gate to flip up smoothly. I had a problem with it disappearing.

[Means for solving problems]

As a means of solving the above-mentioned problems, the present invention is a flip-up gate that is attached to the top of a column via an arm and is opened and closed by rotating it in the vertical direction. The arm support is equipped with a rotary shaft support that supports the arm rotatably in the vertical direction, and an arm is attached inside the support and the arm support in the direction of lifting the gate in conjunction with the arm. The biasing means includes an arm link, a link rod, and a spring body, one end of the arm link is linked to the arm via the rotation shaft bearing, and the spring body is The upper end of the link rod is supported by the arm support, and the link rod has one end connected to the other end of the arm link and the other end connected to the lower end of the spring rod, and the link rod is connected to the connecting portion of the link rod and the arm link. An adjustment section is provided to adjust the strength of the urging force of the urging means, and the adjustment section changes the relative radius of rotation between the link rod and the arm link by changing the connecting position of the link rod and the arm link. It becomes like that.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a vertical cross-sectional view showing one embodiment of the present invention, in which 1 is a column, 2 is a gate, and an arm 4 for holding the gate 2 is attached via an arm support 3 attached to the upper end of the column 1. There is.

The support column 1 and the arm support 3 are hollow rectangular cylinders, and as shown in detail in FIG. 1 and FIG. A thick fitting part 5 provided at the lower end of the support 3 is fitted and fixed with screws 6 for installation.

A rotary shaft support 7 for the arm 4 is protruded from the side surface of the arm support 3 on the side where the gate 2 is attached. A shaft hole 8 is formed in this rotary shaft bearing part 7, and a mounting bracket 9 fixed to the end of the arm 4 is rotatably supported, and the arm 4 is rotated about this shaft hole 8 in the vertical direction. (Refers to the direction of arrow X in the figure. The same applies hereinafter.)
It is designed so that it can be rotated. One end of an arm link 11, which forms part of the biasing means 10, is fixed to a mounting bracket 9 that penetrates the shaft hole 8 and projects to the other side of the rotary shaft support 7. Therefore, the arm link 11 and the arm 4 are attached to the mounting bracket 9.
As a result, the arm 4 is rotated from a horizontal state to a vertical state,
The gate 2 is supported so as to be rotatable and openable. That is, arm 4 and arm link 11
is rotated by approximately 90° in the embodiment.

The biasing means 10 is formed by connecting a gas spring 13 to the arm link 11 via a link rod 12, and is for biasing the gate 2 in the direction of lifting and opening. The arm link 11 is installed so as to intersect diagonally with respect to the axial direction of the arm 4, and one end is connected to the mounting bracket 9 of the arm 4 as described above, and the other end is connected to the opening 14 provided in the side surface of the arm support 3. It's going inside. That is, the arm link 11 rotates upward when the arm 4 rotates downward and downward when the arm 4 rotates upward, so the opening 14 is large enough to allow the arm link 11 to move up and down. It has length.

The gas spring 13 connects a pin 17 to a mounting piece 16 protruding inside the cap 15 of the arm support 3.
It is mounted hanging down so that it can rotate. In addition, the tip of the rod 18 of this gas spring 13 is connected to one end of the link rod 12, and the other end of the link rod 12 is connected to one end of the arm link 11, so that the force that tends to extend the rod 18 is reduced. The link rod 12 and arm link 11 are constantly urged to rotate as indicated by arrows A and B in FIG.

An adjustment section 20 for adjusting the strength of the biasing force of the biasing means 10 is provided at the connecting portion between the arm link 11 and the link rod 12 described above.

This adjustment part 20 has a plurality of through holes 21, 21 formed at arbitrary intervals at the end of the arm link 11, and a pin 22 provided at the end of the link rod 12 is selectively inserted into the through holes 21, 21. and is fixed by a nut 23. That is, by changing the connecting position of the arm link 11 and the link rod 12 using the adjustment section 20, the arm link 11
By changing the radius of rotation of the arm 4, the springing force applied to the arm 4 can be adjusted.

On the other hand, a second adjustment section 3 that performs the same function as the first adjustment section 20 is provided at the connecting portion between the link rod 12 and the rod 18 (substantially a link).
0 is set.

This adjustment part 30 has a long threaded rod 33 protruding from the lower end of the link rod 12, and the threaded rod 33 is inserted into the through hole 32 of the connecting punch 31 of both links, and then screwed with nuts 34, 34 from both sides. It is constructed by tightening and fixing. That is, by changing the fixing position of the threaded rod 33 with respect to the connecting punch 31 by moving in the longitudinal direction, the length ratio of both the link rod 12 and the arm link 11 is changed, thereby The flip-up force is adjustable.

Although it is desirable to install both of the above-mentioned two adjustment sections 20 and 30, the strength of the biasing force can be sufficiently adjusted even if only one of them is used.

A wheel 35 is provided at the end of the connecting punch 31, and this wheel 35 rolls within a guide rail 36 inside the support 1, thereby ensuring smooth rotation of the link.

Further, it goes without saying that an expandable coil spring or the like can be used in place of the gas spring 13 described above, and other means may also be used without any problem.

Next, an example of the assembly order in the illustrated embodiment will be explained. First, attach the gas spring 13 to the mounting piece 16 of the cap 15 with the pin 17, and attach the link rod 1 to the tip of the rod 18 of the gas spring 13.
2 are connected via the adjustment part 30, and furthermore, the link rod 1
2 is connected to the arm link 11 via the adjustment part 20. Next, link rod 12 and arm link 1
1 are in a straight line, both links are folded back above the gas spring 13, and inserted into the arm support 3 with the connecting portion of the rod 18 and the link rod 12 first. Then open the arm link 11 at the opening 14.
After confirming that it is positioned in the shaft hole 8 of the rotary shaft bearing 7, the cap 15 is fixed, and the assembly of the arm support 3 is completed. Then, the arm support 3 assembled as described above is inserted into the support column 1 with the rod 18 of the gas spring 13 at the beginning, and the fitting part 5 is fitted onto the upper end of the support column 1 and screwed into place. Furthermore, by inserting the mounting bracket 9 of the arm 4 through the shaft hole 8 of the rotary shaft bearing 7 and rotatably inserting it into the arm link 11 that has been positioned in advance on the opposite side of the arm 4, and fixing it with a nut 19. Finish the assembly. Of course, other assembly orders are also possible.

Next, the operation in this embodiment will be explained.

First, when the gate 2 is open,
The rod 18 of the gas spring 13 tries to extend downward within the column 1 and pulls the link rod 12 downward, and the arm link 11 is also pulled downward together with this. Therefore, the arm link 11 and the link rod 12 are urged to rotate so as to be positioned on a straight line connecting the shaft hole 8 and the tip of the rod 18.

Then, when the gate 2 is rotated downward, the arm 4
As the arm link 11 rotates, the arm link 11 rotates upward in the opposite direction, pushing the rod 18 upwardly through the link rod 12 against the bias of the gas spring 13. Therefore, the momentum of the rotation of the gate 2 is reduced, and the rotation is performed slowly and stably.

When opening the gate 2, the arm link 11 rotates in the same direction as the direction in which it is biased by the gas spring 13, that is, in the biasing direction, so that the gate 2 can be easily lifted. Become.

Next, if the biasing force for lifting (springing up) the gate 2 described above is not appropriate, the biasing force can be reduced by changing the connection position of one of the adjusting parts 20, 30 provided at the connecting part of each link. The lifting force of the gate 2 is brought to a preferable state by adjusting the strength.

Note that the internal and external shapes and structures of the pillar 1, gate 2, arm support 3, etc. are not limited to the illustrated example.

[Effect of idea]

A biasing means for assisting the rotation of the gate is provided in the cylindrical column and the arm support, and an adjustment section for adjusting the strength of the biasing force is provided at the link connecting portion of the biasing means. By adjusting the strength of the biasing force of the gate in all situations, the gate can always be flipped up and rotated smoothly, and the biasing means consisting of a link structure is not exposed to the outside, resulting in a good appearance. It is effective in keeping the

Furthermore, the adjustment section adjusts the biasing force by simply moving the connecting section of the link, so there is no need to replace the biasing means itself, making the adjustment operation extremely easy. be.

[Brief explanation of the drawing]

FIG. 1 is an exploded partial vertical sectional view of an embodiment of the present invention, FIG. 2 is a partial vertical sectional view of the assembled state in the direction orthogonal to FIG. 1, FIG. 3 is a partial plan view, and FIG. FIG. 5 is a partially sectional side view, FIG. 5 is a plan view, and FIG. 6 is a front view. 1... Support column, 2... Gate, 3... Arm support, 4... Arm, 7... Rotating shaft bearing, 10...
Biasing means, 11... Arm link, 12... Link rod, 13... Gas spring, 18... Rod, 20, 30... Adjustment section.

Claims (1)

[Scope of claim for utility model registration] A gate attached to the top of a post via an arm,
A flip-up gate that opens and closes by rotating vertically and is characterized by meeting the following requirements: (a) A cylindrical arm support attached to the upper end of a cylindrical support is provided with a rotary shaft bearing that supports the arm so as to be rotatable in the vertical direction. (b) A biasing means for biasing the arm in a direction to lift the gate in conjunction with the arm is provided inside the column and the arm support. (c) The biasing means includes an arm link, a link rod, and a spring body, one end of which is linked to the arm via the rotation shaft bearing, and the spring body has its upper end connected to the arm support. The link rod has one end connected to the other end of the arm link and the other end connected to the lower end of the spring rod. (d) An adjustment section for adjusting the strength of the biasing force of the biasing means is provided at the connecting portion between the link rod and the arm link. (e) The adjustment section is configured to change the relative radius of rotation between the link rod and the arm link by changing the connecting position of the link rod and the arm link.