JPH0452256Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to fences installed at gas stations, factory grounds, boundaries between parking lots and roads, etc. for the purpose of blocking vehicles.

(Prior Art) Conventionally, the present applicant has installed a fence buried in the ground as an easy-to-open and close-operated fence that is stretched at the boundary with the road in order to prevent cars from entering during closing hours at gas stations, etc. The lower ends of a number of collapsible poles whose upper ends are connected by string-like bodies inside the groove frame are pivotally mounted with horizontal shafts so that they can rise and fall freely, and the string-like bodies are fixed in tension at the ends of the groove frame. A fence with fixed poles erected was first developed, and it was put into production in 1980.
-Already published as Publication No. 107115.

(Problem to be solved by the invention) However, with the fence as seen in the above-mentioned earlier application, the work of pivoting a large number of collapsible poles in a movable manner inside a trench frame buried in the ground is troublesome. Several problems remained, such as increased work costs, difficulty in removing the collapsible pole once it was pivoted, and time-consuming maintenance and trench cleaning.

(Means for solving the problem) The present invention was completed with the aim of solving the above-mentioned problems. In the fence, the lower end of a retractable pole is pivotally mounted with a horizontal axis so that it can be raised and lowered freely, and a fixed pole is erected at the end of the groove frame to fix a string-like body under tension. A U-shaped holder is installed on the inner surface of the side wall with its opening facing upward, and a sleeve is inserted into the lower end of each collapsible pole. The sleeve is inserted so as to protrude from the open end of the sleeve, and each collapsible pole is fitted into the receiver with the protruding end of the horizontal shaft, and is inserted between the flange plates so that the poles are inserted onto the upper flange plate. It is characterized in that it is pivotally connected to a horizontal shaft fixed to a receiver by pressure contact between a collar plate portion that is narrowed by tightening and loosening a bolt and a shaft portion of the bolt.

(Example) Next, the present invention will be explained in detail with reference to illustrated examples.

1 is a trench frame made of an iron plate with an internal space of, for example, 130 mm in depth and 110 mm in width, which is buried in the ground at the entrance of a gas station, etc., and 2 and 3 are fixed fixtures erected at both ends of trench frame 1. It's Paul. Inside the groove frame 1, there are a number of collapsible poles 5 made of metal tubes, for example, with a diameter of 60 mm and a height of 850 mm, which are connected to each other by a string-like body 4 whose upper part is a chain, at a required interval, for example, an interval of approximately 900 mm. It is pivoted so that it can be raised freely. That is, a sleeve 6a is inserted into the lower end of each collapsible pole 5, and a hollow horizontal shaft 6 is inserted into this so that both sides thereof protrude from the open end of the sleeve 6a. For example, connect the end to the groove bottom 8 on the inner surface of the side walls 7, 7 of the groove frame 1.
It is fitted and fixed to U-shaped receivers 9, 9 with openings provided facing each other at a position of 70 mm and facing diagonally upward. Note that the protruding end of this horizontal shaft 6 is connected to the holder 9,
9, first, the protruding end is fitted and held in the U-shaped receivers 9, 9 whose openings face diagonally upward, and then the upper and lower collar plates 10, 9 of the receivers 9 are fitted and held. A bolt 11 with a tapered shaft portion is inserted into the through holes 10a, 10a provided in the upper collar plate 10, and is tightened by operating a nut 12 from above the upper flange plate 10, so that the horizontal axis is fixed as shown in FIG. The horizontal shaft 6 is pressed against the support 9 by pressure contact with the flange plate portions 10, 10 whose mutual interval is narrowed until the cross section of the bolt 6 becomes oval, and by pressure contact of the tapered shaft portion of the bolt 11 against the horizontal shaft 6. The poles 5 are firmly fixed in a holding manner, and each collapsible pole 5 is pivotally connected to the fixed horizontal shaft 6 and the sleeve 6a so as to be able to move up and down smoothly. 13 is a support pin that supports the upper part of the collapsible pole 5 when the collapsible pole 5 is knocked down inside the groove frame 1;
3 is stretched slightly above the groove bottom 8, so when the collapsible pole 5 is not in use, it is attached to the groove frame 1.
The collapsible pole 5 is stored in a substantially horizontal position apart from the groove bottom 8 of the groove, even if rainwater or mud flows into the groove frame 1.
It cannot be defiled. Also, one end of the string-like body 4 that connects the upper parts of the collapsible poles 5 to each other is fixed to one of the fixed poles 2, and the other end is attached to a winding device such as a manual winch or an electric winch provided on the other fixed pole 3. It is wound around the machine 14 and can be fixed in a tensioned state. Note that when the number of collapsible poles 5 is small, it is not necessarily necessary to provide the winder 14, and it is possible to provide a hook or the like at the end of the string-like body 4 and fix it to the fixed pole 3 in a tensioned state. You may also do so. When the groove frame 1 is made of concrete, the receiver 9 may be integrally embedded in the groove frame 1 with a locking part provided on the side thereof.

(Function) When the entrance and exit of a gas station or the like is left open, the cord-like body 4 is loosened and each collapsible pole 5 is placed on the ground as shown by the dashed line in Fig. 1. By storing it upside down inside the buried trench frame 1, it will not cause any hindrance to the entry and exit of vehicles, etc. Also, if the entrance is closed at the time of closing etc., it can be installed on the fixed pole 3. When the string-like body 4 is pulled by the winder 14 or manually, the multiple collapsible poles 5 whose upper parts are connected to each other by the string-like body 4 are raised and erected, as shown in FIG. A string-like body 4 fixed to a fixed pole 2
Since the poles stop at a tensioned position, a strong fence is formed that can completely prevent cars from entering.If the string-like body 4 is loosened, each pole 5 will fall down all at once due to its own weight, and the poles 5 will fall down again into the groove 1. This is the same as in the earlier application, Fuens.

However, in the present invention, a sleeve 6a is inserted into the lower end of each collapsible pole 5, and the horizontal shaft 6 is inserted through this so that both ends thereof protrude from the open end of the sleeve 6a. The protruding end of the horizontal shaft 6 is fitted into U-shaped holders 9, 9, which are provided opposite to the inner surfaces of the side walls 7, 7 of the groove frame 1, and whose openings face diagonally upward. Flange plate part 1
The collar plate parts 10, 10 are narrowed by inserting a bolt 11 with a tapered shaft into the through holes 10a, 10a provided in the upper collar plate part 10 and tightening a nut 12 from above the upper collar plate part 10. The horizontal shaft 6 is firmly fixed to the receiver 9 by pressure contact with the tapered shaft portion of the bolt 11, and each collapsible pole 5 can be smoothly raised and lowered by the fixed horizontal shaft 6 and the sleeve 6a. This has the following features. In other words, to install the fence according to the present invention, prepare in advance the groove frame 1 with the supports 9 attached to the inner surfaces of the side walls 7, 7, and the collapsible pole 5 with the sleeve 6a inserted at the lower end. Keep this groove frame 1
is buried in the ground, while the retractable pole 5 has a U-shaped receiver 9 with a horizontal shaft 6 inserted through a sleeve 6a at the lower end, and with both protruding ends facing the side frames 7, 7. , 9 through the diagonally upward opening, and then insert the bolt 11 whose shaft portion is tapered into the collar plate portions 10, 10, and tighten the nut onto the threaded portion protruding from the top. 12 are screwed together, the nut 12 is tightened and fixed from above the groove frame 1 using a tool such as a T-shaped wrench, and finally, the upper parts of the many collapsible poles 5 are interconnected with the string-like body 4. For this reason, the installation work is extremely easy, and the side frames 7, 7 in the groove frame 1 are secured using a special fixing means that is made strong by press-fitting the narrowed holders 9, 9 and the bolts 11 as described above. A horizontal shaft 6 that can be firmly constructed between the
Since the collapsible pole 5 can be raised and lowered freely by the sleeve 6a inserted into the lower end of the collapsible pole 5, the tiltable pole 5 can be raised and lowered smoothly, and the bolt can be easily operated from above the groove frame 1. 11 can be tightened and loosened, each collapsible pole 5 can be easily attached and detached, and there are many advantages such as easy maintenance and groove cleaning.

(Effects of the invention) As is clear from the above description, the present invention consists of a U-shaped structure in which a large number of collapsible poles are attached to sleeves inserted into their lower ends and to both side frames of a groove frame with the openings facing diagonally upward. By pivoting to a horizontal shaft that is firmly fixed at both ends and easily tightened and loosened on a letter-shaped receiver, the installation work to pivot a large number of collapsible poles so that they can be raised and lowered is simplified and the work cost is reduced. It has many advantages, such as being able to lower the fence and making it easy to remove the collapsible pole once installed, making it convenient for maintenance and cleaning inside the trench.It has great practical value as it eliminates the disadvantages of conventional fences of this type. It's a big thing.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention in use, FIG. 2 is a perspective view of the main part thereof, and FIG. 3 is a partially cutaway front view of the main part. 1... Groove, 2, 3... Fixed pole, 4... String-like body, 5... Foldable pole, 6... Horizontal shaft, 6a...
Sleeve, 7... Side wall, 9... Receiver, 10... Flange plate, 11... Bolt.

Claims (1)

[Scope of utility model registration request] A string-like body 4 is placed above inside the trench frame 1 buried in the ground.
The lower ends of a large number of collapsible poles 5 connected by a horizontal axis 6 are pivotally mounted to be able to rise and fall freely, and fixed poles 2 and 3 are attached to the ends of the groove frame 1 to fix a string-like body 4 under tension. In the fence where the trench frame 1 is erected, a U-shaped receiver 9 is attached to the inner surface of the side walls 7, 7 with the opening facing diagonally upward, and each collapsible pole 5 is Assuming that the sleeve 6a is inserted into the lower end, the horizontal shaft 6
is inserted so that both ends protrude from the open end of the sleeve 6a, and each collapsible pole 5 is attached to the horizontal shaft 6a.
A flange that fits into the receiver 9 with a protruding end, is inserted between the flange plates 10 and 10, and is narrowed by tightening a bolt 11 that can be tightened or loosened on the upper flange plate 10. A fence characterized in that it is pivotally connected to a horizontal shaft 6 fixed to a receiver 9 by pressure contact between plate parts 10, 10 and the shaft part of the bolt 11.