JPS6154915B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention connects a plurality of central vertical bars and front and rear vertical bars arranged before and after the central vertical bars with a plurality of links that rotate in a horizontal plane to expand and contract the central vertical bars. The present invention relates to a telescopic gate device having a freely movable gate body.

In this type of device, Japanese Patent Laid-Open No. 54
- Telescopic gates shown in Publication No. 84331 and Japanese Unexamined Patent Application Publication No. 118635/1984 are known. These conventional gates have been made lightweight by making the vertical bar made of pipe, and the link and the vertical bar are fixed by expanding the vertical bar from the inside, and crimping this expanded part with a cylindrical part formed in advance on the link. This simplifies the connection structure.

By the way, in these conventional telescopic gates, the upper and lower links, which are vertically adjacent and intersect, are independent from each other. For this reason, during assembly, it is necessary to ensure intersecting relationships with adjacent links in the direction of expansion and contraction, so after repeating the process many times to fit all the links one by one to the vertical bars, Each link must be positioned relative to each vertical bar while maintaining the relationship between the upper and lower links, and then a predetermined portion of the vertical bar must be expanded. Therefore, there were problems in that assembly was extremely troublesome and mass production was low. In addition, in conventional telescopic gates, a retaining collar or an alternative spacing tube is used at each intersecting portion of the links, but both of these are separate parts from the links. Therefore, not only the number of parts is large, making the assembly even more complicated, but also the structure is complicated.

The present invention has been proposed under the above circumstances, and its purpose is to provide a simple telescoping gate device that is excellent in mass productivity, can be smoothly expanded and contracted, and has an outstanding structure.

The present invention will be explained below with reference to the drawings.

Figures 1 and 2 show a single-opening telescopic gate device, where 1 is the hanging side gatepost, 2 is the doorstop side gatepost, and these are placed upright on the ground A at a distance from each other. . A gate main body 4 is cantilever-supported on the hanging side gate post 1 via supports 3, 3. In this embodiment, the supports 3, 3 are used to rotatably support the gate main body 4, and the direction of rotation is shown by the arrow in FIG. In addition, code 5 is the gatepost side locking body,
Reference numeral 6 denotes a locking body on the side of the gate main body, which forms a locking mechanism, and the locking body 6 is provided with a handle 6a. Also, 7 indicates a door roller.

The gate main body 4 includes a plurality of horizontal telescopic link units 8 to 11, a plurality of central vertical bars 12, a plurality of front vertical bars 13, and a plurality of rear vertical bars 14, and is formed to be expandable and contractible. ing.

The horizontal telescoping link units 8-11 are all of the same construction and are formed as shown in detail in FIGS. 3 to 5. That is, each of these units 8 to 11 is formed with a plurality of sets of equal length links 15... and two sets of equal length end links 16.... The links 15 are made of metal such as iron, aluminum alloy, or stainless steel (in this embodiment, they are made of stainless steel). Among these links 15..., for example, link 1 placed on the upper side
5... are both fixed cylinder parts 17,
18 are provided separately and integrally in a protruding manner, and a rotation hole 19 is provided in the center. In addition, the other links 15 arranged on the lower side each have a fixed cylinder part 20 integrally protruding from the center part, and rotation holes 21, 22 at both ends.
It is formed by providing each separately. Further, the end links 16 are also made of metal such as iron, aluminum alloy, stainless steel, etc. (this embodiment is made of stainless steel). These end links 16 are, for example, half the length of the link 15, and have a fixed cylinder part 23 integrally protruding from one end thereof, and a rotation hole part 24 integrally protruding from the other end thereof. It is formed by Note that the end link 16 may be the same length as the link 15 or longer. Link 1 above
5... comrades, and end links 16... comrades, and these links 15, 16 comrades are connected to each other's fixed cylinder portions 17, 18, 20, 23 and rotation hole portions 19, 21,
22 and 23 are fitted separately and crossed each other, and the rotation holes 19, 21, 22, 23
The fixed cylinder portions 17, 18, 20, 23 have flanges 17a, 18a, 20a, 23a at their penetrating ends.
are formed in an overhanging manner. Tsuba 17a, 18
a, 20a, 23a are the respective cylindrical portions 17, 18, 2
It is provided to maintain the fitted state between 0, 23 and 19, 21, 22, 24. With this configuration, each link 16, 16 that crosses each other, 1
5 and 15 and 15 and 16 are pivotally connected to each other, and a horizontal telescopic link unit 8 is extendable and retractable.
~11 are formed. In addition, 25... in FIGS. 4 and 5 are rotation holes 19, 21, 23, respectively.
This is a resin ring that is longer than 22 and fits on the outside of these rings, and is used to reduce the contact area between the links and make the relative rotation of each link 15..., 16... smoother. was used in this example,
It can be omitted. Moreover, in the present invention, the rotation holes and the fixed cylinder portions of the upper and lower links may be arranged so that the unit of this embodiment is just turned upside down. Furthermore, 2
6 is a reinforcing bead, which is provided as necessary.

Moreover, the central vertical bars 12 are all made of metal tubes such as iron, aluminum alloy, stainless steel, etc., and these are connected to a plurality of horizontal telescopic link units 8 to 12.
Fixed cylindrical parts 20 and 23 are provided at the central intersection of links 15 and 15 in 11, and the intersection of end links 16 and 16 located on the extension of the straight line connecting these central intersections.
It is installed to penetrate through...

Furthermore, the front vertical bar 13... and the rear vertical bar 14...
The tube body is made of metal such as iron, stainless steel, or aluminum alloy, and these are the intersections of the ends of the links 15 and 15 in the plurality of horizontal telescoping link units 8 to 11, and the ends of each link 15 and 16. They are provided so as to pass through fixed cylinder parts 17 and 18 provided at the intersection, respectively.

And each of these vertical bars 12..., 13..., 14...
and each of the fixed cylinder parts 17..., 18..., 20..., 23... are fixed by expanded pipe parts 27..., respectively.
Expanded pipe part 27... is fixed cylinder part 1 of each vertical bar 12-14
7, 18, 20, and 23, and is formed by bulging out the penetrating portion from the inside. Due to this bulge, the expanded tube portions 27 are crimped and fixed to each fixed cylinder portion 17, 18, 20, 23. In addition, in forming this expanded tube portion 27, each vertical bar 1 is
After being inserted in a shortened state within 2 to 14,
A tube expansion device that has a part that expands outward by mechanical force, or a tube expansion device that uses hydraulic pressure such as bulge processing is used. Further, in the present invention, each of the vertical bars 12 to 14 and each of the fixed cylinder parts 17, 18, 20,
23 may be fixed as shown in FIG. In other words, a bead-shaped first expanded tube portion 27a is formed in advance at a fixed position of each of the vertical bars 12 to 14, and this expanded tube portion 27a is formed in advance.
After positioning the fitting depth of the fixed cylinder parts 17, 18, 20, 23 in step a, a bead-shaped second expanded pipe part is provided on each of the vertical bars 12 to 14 so as to engage with the collar 20a. Good too.

Although the above embodiment is configured as described above, the present invention is not limited to this, and the present invention can also be implemented in a double-opening telescopic gate device. Furthermore, in the above embodiment, two sets of horizontal telescoping link units are provided close to each other at the top and bottom, but the number of these units to be used can be set as appropriate based on the height and length of the gate body and design requirements. It is sufficient if at least one is provided at the top and bottom. In addition, in the above embodiment, in order to make the relative rotation of each link more stable and smooth,
Although the rotation hole has a cylindrical structure, it may be formed as a simple hole without a cylindrical portion. In carrying out the present invention, unless it is contrary to the gist of the invention, the horizontal telescoping link unit, links, end links, fixed cylinder parts, rotation holes, collars, central vertical bars, front vertical bars, rear It goes without saying that the specific structure, shape, position, material, etc. of the side vertical bars, bulging portions, etc. are not limited to the one embodiment described above, and can be configured and implemented in various ways.

The present invention described above has the gist of the configuration described in the claims above. Therefore, according to the present invention, the gate main body includes a plurality of horizontal telescoping unit links which are formed in advance to be telescopic by pivotally connecting the intersecting parts of the links via a fixed cylindrical part with a flange. Because of this structure, the gate main body can be assembled by passing the central vertical bar and the front and rear vertical bars through the fixed cylindrical part of the unit and fixing each of these bars and the fixed cylindrical part. In other words, there is no need for the conventional method of assembling each link one by one for each vertical bar while taking into account the cross-relationships with adjacent links in the direction of expansion and contraction. Since it can be assembled, the work is easy and mass production is possible.

Each link of the horizontal telescopic link unit is connected to be relatively rotatable by fitting the fixed cylinder part and the rotation hole part at the intersection part.
It can be easily rotated using the outer periphery of the fixed cylinder as a guide. This has the effect that the gate body can expand and contract smoothly.

Further, since the fixed cylinder has a flange and maintains a fitted state with the rotation hole, there is no need for a retaining member such as a retaining collar as in the prior art. Moreover, the fixed cylinder part is integrated with the link, and
Since this and the vertical bar are fixed at the expanded tube portion formed by expanding a part of the vertical bar, screws, pins, welding, etc. are not required for fixing. Therefore, the number of parts can be reduced, the structure can be simplified, and the fixing work can also be made easier.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a perspective view of the horizontal telescopic link unit, and FIG. FIG. 5 is a sectional view of the upper part of the gate main body along the center line, and is an exploded perspective view of a part of the unit. FIG. 6 is a sectional view showing another structure of the connecting portion between the unit and the vertical bar. 4...Gate body, 8, 9, 10, 11...Horizontal telescopic link unit, 12...Central vertical bar, 13...
...Front vertical bar, 14... Rear vertical bar, 15... Link, 16... End link, 17, 18, 20, 2
3...Fixed cylinder part, 17a, 18a, 20a, 23
a...Brim, 19, 21, 22, 24... Rotating tube portion, 27, 27a, 27b... Tube expansion portion.

Claims (1)

[Scope of Claims] 1. A plurality of sets of equal-length metal links each having a fixed cylinder integrally provided at either the ends or the center, and a rotation hole provided at the other end, and fixed at one end. Two sets of equal-length metal end links each having an integral cylindrical portion and a rotation hole at the other end, and these links and end links are connected to each other by connecting the fixed cylindrical portion and the rotation hole to each other. At the same time, the fixed cylinder part that penetrates the rotation hole part is formed with a flange projecting from the penetrating end, and the mutually crossed links are pivotally connected to each other so as to be freely rotatable. a plurality of horizontal telescoping link units formed in advance to be expandable and retractable, central intersections of the links in these horizontal telescoping link units, and end links located on an extension of a straight line connecting these central intersections. A metal pipe made of a metal tube, which is provided to penetrate the fixed cylinder part provided at each of the intersection parts of the comrades, and has an enlarged pipe part formed in the penetrating part to bulge from the inside to fix the fixed cylinder part. The central vertical bar is provided to pass through the fixed cylinder portions provided at the intersections of the ends of the links in the plurality of horizontal telescoping link units, and the intersections of the ends of the links and the end links. A gate body comprising: a front vertical bar and a rear vertical bar made of metal tubes, each having an enlarged tube portion formed in the penetrating portion to bulge from the inside to fix the fixed cylinder portion; Features a telescopic gate device.