JP2015197038A - Air inflation type fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air inflation type fence capable of maintaining the function as a barricade (a fence) and a display device even if a vehicle collides.SOLUTION: An air inflation type fence comprises a tube connected body of inflating-contracting by filling-discharging air, and the tube connected body comprises a central tube 10 of a straight tube shape and straight tube-like parts 21S, 22S and 23S arranged at a 120° interval in the circumferential direction of the central tube 10 and respectively extending in parallel to the central tube while separating by a constant distance from an outer peripheral surface of the central tube 10, and comprises three support tubes 21, 22 and 23 connected to both end parts of the central tube 10 in respective both end parts, and display cloths 51, 52 and 53 for displaying a marker such as a character, a diagram and a sign on both surfaces, are arranged between the respective straight tube-like parts and the central tube 10 of the three support tubes.

Description

  The present invention relates to an air inflatable fence that expands and contracts by injecting and discharging air, and can be used as a barricade or the like that prevents the vehicle from proceeding during expansion.

  For example, a barricade that prevents a runaway vehicle from running has been proposed that includes a hollow body that expands and expands by injecting gas to form a barricade skeleton (see Patent Document 1 below).

  The barricade described in Patent Document 1 is attached with a fabric in which “stop” is displayed on a triangular columnar barricade skeleton formed by connecting three long hollow bodies (tubes) with a short hollow body (tube). It will be.

According to such a barricade, the road can be blocked by expanding it in a short time, and the rider can be injured even if a motorcycle or other vehicle enters because it does not use metal. Can be prevented.
In addition, this barricade including a fabric on which characters “stop” are displayed can exhibit a function as a display device.

Japanese Patent Laid-Open No. 10-219640

However, the conventional barricade made of a hollow body including the one described in Patent Document 1 has a high center of gravity, and has a problem that it easily falls down due to a collision of a vehicle or wind.
And if it falls, the function as a barricade (fence) cannot be achieved, and the characters displayed on the cloth cannot be seen, so the function as a display device cannot be exhibited.
In this case, raising the fallen barricade again is extremely dangerous because the person who performs the work may come into contact with the following vehicle.

The present invention has been made based on the above situation.
An object of the present invention is to provide an air inflatable fence that can maintain functions as a barricade (fence) and a display device even when a vehicle or the like collides.

(1) The air inflatable fence of the present invention is an air inflatable fence provided with a tube connecting body that expands and contracts by filling and discharging air,
The tube connector is a straight tubular central tube,
The central tube is disposed at 120 ° intervals in the circumferential direction, and each has a straight tubular portion extending in parallel with the central tube while being spaced apart from the outer peripheral surface of the central tube, and at both ends, Three support tubes connected to both ends of the central tube,
A display cloth on which a sign selected from characters, figures, symbols and the like is displayed on at least one surface is disposed between the straight tubular portion of each of the three support tubes and the central tube. To do.

  According to the air-expandable fence having such a configuration, it is possible to exert a function as a barricade (fence) by installing any two of the three support tubes on the road in a grounded state. In addition, the display cloth disposed between the straight tubular portion of the remaining one support tube and the central tube is in an upright state (perpendicular to the road surface) and exhibits the display function of this display cloth. be able to.

  In addition, the center of gravity of the air inflatable fence is on the central axis of the central tube and is sufficiently low compared to the conventional one, so the air inflatable fence is difficult to tip over and is installed in a stable state. be able to.

When a strong impact such as a vehicle colliding from the front side or the back side of the installed air inflatable fence is received, the air inflatable fence rotates around the central tube, and then the two support tubes again. Stop while grounding.
For this reason, while being able to maintain the function as a barricade (fence) similar to that before the collision, it is possible to maintain the display function of the display cloth that has been erected after the rotation.

(2) In the air inflatable fence according to the present invention, it is preferable that the tube connector is formed of a rubberized cloth or a plastic cloth.

(3) In the air inflatable fence of the present invention, it is preferable that the display cloth is formed from a mesh fabric.
According to the air-expandable fence having such a configuration, the display cloth is ensured to be air permeable, so that it is possible to prevent the wind from overturning (rotating).

(4) In the air inflatable fence of the present invention, it is preferable that the width of the display cloth is shorter than the length of the straight tubular portion of the support tube.
According to the air inflatable fence having such a configuration, the area surrounded by the central tube and the support tube is not completely blocked by the display cloth, and the ventilation area is secured on both ends of the display cloth. The fall (rotation) due to wind can be further suppressed.

(5) In the air inflatable fence according to the present invention, it is preferable that the central tube is formed of a laminated body of rubberized cloth or plastic cloth.
According to the air-expandable fence having such a configuration, it is possible to suppress the occurrence of breakage (perforation) when a vehicle or the like collides with the central tube due to the reinforcing effect obtained by stacking the pulling cloths.

(6) In the air inflatable fence according to the present invention, it is preferable that at least a grounding portion of the support tube is formed of a laminated body of rubberized cloth or plastic cloth.
According to the air-expandable fence having such a configuration, the reinforcement effect by laminating the pulling cloth can suppress the occurrence of breakage (perforation) when a vehicle or the like rides on or collides with the support tube. it can.

(7) In the air inflatable fence according to the present invention, it is preferable that a plurality of belt-shaped reinforcing bodies made of an elastic member are wound around the outer periphery of the support tube.
According to the air expandable fence having such a configuration, it is possible to further suppress the occurrence of breakage (perforation) when a vehicle or the like rides on or collides with the support tube.

(8) In the air inflatable fence of the present invention, it is preferable that signs are displayed on both surfaces of the display cloth.
According to the air-expandable fence having such a configuration, the display function of the display cloth can be exhibited on both the front and back sides.

  According to the air expansion type fence of the present invention, even if a vehicle or the like collides, the function as a barricade (fence) and the function as a display device can be maintained without impairing.

It is a front view showing one embodiment of the air expansion type fence of the present invention. It is a rear view which shows the air expansion type fence shown in FIG. It is a right view which shows the air expansion type fence shown in FIG. It is a left view which shows the air expansion | deployment type fence shown in FIG. It is a top view which shows the air expansion type fence shown in FIG. It is a bottom view which shows the air expansion | deployment type fence shown in FIG. It is a cross-sectional view (AA cross section of FIG. 1) which shows the air expansion | deployment type fence shown in FIG. It is a cross-sectional view which shows the air inflatable fence shown in FIG. It is a cross-sectional view which shows the air inflatable fence shown in FIG. It is a front view which deletes the code | symbol of the inflatable fence shown in FIG. It is a rear view which deletes the code | symbol of the inflatable fence shown in FIG. It is a right view which deletes the code | symbol of the air inflatable fence shown in FIG. It is a left view which deletes the code | symbol of the air inflatable fence shown in FIG. It is a top view which deletes the code | symbol of the air inflatable fence shown in FIG. It is a bottom view which deletes the code | symbol of the air inflatable fence shown in FIG. It is a cross-sectional view (BB section of Drawing 8) which deletes and shows the numerals of the air expansion type fence shown in Drawing 7A.

Hereinafter, one embodiment of an air expansion type fence of the present invention is described using a drawing.
The air inflatable fence according to this embodiment shown in FIGS. 1 to 7 (FIGS. 7A to 7C) is suitably used as a barricade for countermeasures against a runaway group by police.
The air inflatable fence of the present embodiment is an air inflatable fence including a tube connecting body that expands and contracts by injecting and discharging air,
The tube connection body has a straight tubular central tube 10 and a straight tubular portion 21S extending in parallel with the central tube 10 while being spaced apart from the outer peripheral surface of the central tube 10, and both ends of the central tube 10 at both ends thereof. A first support tube 21 connected to the portion, and arranged at a distance of 120 ° from the first support tube 21 in the circumferential direction of the central tube 10, and a fixed distance from the outer peripheral surface of the central tube 10 (the first support tube A second support tube having a straight tubular portion 22S extending in parallel with the central tube 10 while being spaced apart, and being connected to both ends of the central tube 10 at both ends thereof. 22 and the second support tube 22 from the second support tube 22 in the circumferential direction of the central tube 10 at an interval of 120 °. A straight tubular portion extending in parallel with the central tube 10 while being spaced apart from the outer peripheral surface of the tube 10 by a certain distance (equal distance from the distance between the straight tubular portion 21S of the first support tube 21 and the straight tubular portion 22S of the second support tube 22). And a third support tube 23 connected to both ends of the central tube 10 at both ends thereof.
Between the straight tubular portion 21S of the first support tube 21 and the central tube 10, between the straight tubular portion 22S of the second support tube 22 and the central tube 10, and between the straight tubular portion 23S of the third support tube 23 and the central tube 10. Between the two, display cloths 51, 52, and 53 on which both sides of the “stop” character marker are displayed are arranged.

The central tube 10, which is a straight tube, is disposed at the center of three support tubes (a first support tube 21, a second support tube 22, and a third support tube 23).
That is, in the cross-sectional view as shown in FIG. 7A, the central axis (O ₁₀ ) of the central tube 10 represents the central axes (O ₂₁ , O ₂₂ , O ₂₃ ) of the straight tubular portions of the three support tubes. It is in the position of the center of gravity of the equilateral triangle as the apex (it is also the position of the outer, inner, and vertices).

Three grips 60 (six at both ends) are attached to both ends (one end and the other end) of the central tube 10 at intervals of 120 °.
In addition, an exhaust port 41 for discharging air filled in the tube connector is disposed on one side surface (left side surface) of the central tube 10.

The length (L1) of the central tube 10 that defines the width of the air inflatable fence according to the present embodiment is preferably 2000 to 6500 mm, and 4000 mm if a suitable example is shown.
The outer diameter of the central tube 10 is preferably 350 to 650 mm, and 420 mm if a suitable example is shown.

The three support tubes (the first support tube 21, the second support tube 22, and the third support tube 23) that constitute the tube connection body are arranged at equiangular (120 °) intervals in the circumferential direction of the central tube 10. Yes.
The internal space (air chamber) of each of the three support tubes communicates with the internal space (air chamber) of the central tube 10, but the internal space of the support tube and the internal space of the central tube 10 are independent. May be.

  The first support tube 21 is positioned on each of the straight tubular portion 21S extending in parallel with the central tube 10 and both end sides (one end side and the other end side) of the straight tubular portion 21S, and approaches the outer peripheral surface of the central tube 10. The connecting tube portions 21 </ b> A and 21 </ b> B are connected to both ends (one end or the other end) of the central tube 10.

Both end portions of the first support tube 21 can be connected to both end portions of the central tube 10 by the connecting tube portions 21A and 21B.
The connecting tube portion 21A extends from the outer peripheral surface of one end portion of the central tube 10 to the radially outer portion of the first portion 211A, and extends continuously from the first portion 211A and is connected to one end side of the straight tubular portion 21S. It consists of the second part 212A.
The connecting tube portion 21B has a first portion 211B extending radially outward from the outer peripheral surface of the other end portion of the central tube 10, and the other end side of the straight tubular portion 21S extending continuously from the first portion 211B. It consists of the 2nd part 212B to connect.

  The second support tube 22 is positioned on each of the straight tubular portion 22S extending in parallel with the central tube 10 and both end sides (one end side and the other end side) of the straight tubular portion 22S, and approaches the outer peripheral surface of the central tube 10. The connecting tube portions 22A and 22B are connected to both end portions (one end portion or the other end portion) of the central tube 10.

Both end portions of the first support tube 22 can be connected to both end portions of the central tube 10 by the connecting tube portions 22A and 22B.
22 A of connecting pipe parts are extended from the outer peripheral surface of the one end part of the central tube 10 to the radial direction outward, and extend continuously from the 1st part 221A, and connect with the one end side of the straight tubular part 22S. The second portion 222A.
The connecting tube portion 22B has a first portion 221B extending radially outward from the outer peripheral surface of the other end portion of the central tube 10, and extends continuously from the first portion 221B to the other end side of the straight tubular portion 22S. It consists of the 2nd part 222B to connect.

  The third support tube 23 is positioned on each of the straight tubular portion 23S extending in parallel with the central tube 10 and both end sides (one end side and the other end side) of the straight tubular portion 23S, and approaches the outer peripheral surface of the central tube 10. The connecting tube portions 23 </ b> A and 23 </ b> B are connected to both ends (one end or the other end) of the central tube 10.

Both end portions of the first support tube 23 can be connected to both end portions of the central tube 10 by the connecting tube portions 23A and 23B.
The connecting tube portion 23A extends from the outer peripheral surface of one end of the central tube 10 to the radially outer portion of the first portion 231A, and extends continuously from the first portion 231A to connect to one end of the straight tubular portion 23S. It consists of a second part 232A.
The connecting tube portion 23B extends from the outer peripheral surface of the other end of the central tube 10 to the first portion 231B extending outward in the radial direction, and extends continuously from the first portion 231B to the other end of the straight tubular portion 23S. It consists of the 2nd part 232B to connect.

The tube connecting body constituting the air inflatable fence of the present embodiment can be rapidly expanded by injecting air using an air cylinder or the like.
The connecting tube portion 21A (first portion 211A) of the first support tube 21, the connecting tube portion 22A (first portion 221A) of the second support tube 22, and the connecting tube portion 23A (first portion 231A) of the third support tube 23. ) Is provided with an air inlet 32 for filling the tube connector with air. The tube connector can be expanded by connecting a hose to these charging ports 32 and filling air from an air cylinder or a blower.
When injecting air into the tube connector, a check valve can be attached to each of the charging ports 32 so that the filled air does not escape. It should be noted that these check valves can be removed and used for exhaust.

The tube connector constituting the air inflatable fence of the present embodiment contracts by discharging air.
The connecting tube portion 21A (second portion 212A) of the first support tube 21, the connecting tube portion 22A (second portion 222A) of the second support tube 22, and the connecting tube portion 23A (second portion 232A) of the third support tube 23. ) Are respectively provided with exhaust ports 42 for discharging the air filled in the tube connector.
The air filled in the tube connector is discharged from the exhaust port 42 disposed in each of the first support tube 21, the second support tube 22 and the third support tube 23 and the exhaust port 41 disposed in the central tube 10. As a result, the tube connector can be rapidly contracted.

The connecting tube portion 21A (first portion 211A) and connecting tube portion 21B (first portion 211B) of the first support tube 21, the connecting tube portion 22A (first portion 221A) and the connecting tube portion 22B of the second support tube 22 ( A loop-shaped band 65 is attached to the first portion 221B) and the connecting tube portion 23A (first portion 231A) and the connecting tube portion 23B (first portion 231B) of the third support tube 23.
By connecting one end of the rope having the other end fixed to each of these bands 65 via a carabiner or the like, the fence of this embodiment can be prevented from moving on the road while rolling.

The connection tube portion 21B (second portion 212B) of the first support tube 21, the connection tube portion 22B (second portion 222B) of the second support tube 22, and the connection tube portion 23B (second portion 232B) of the third support tube 23. Are provided with safety valves 45 that are activated when the internal pressure of the tube connector exceeds a certain value.
Thereby, it is possible to avoid rupture of the tube connected body even when the internal pressure is rapidly increased.

In the straight tubular portion 21S of the first support tube 21, the straight tubular portion 22S of the second support tube 22, and the straight tubular portion 23S of the third support tube 23, strip-shaped reinforcing bodies 70 made of an elastic member are respectively wound at three locations. It has been turned.
As a result, a vehicle or the like rides on one of the support tubes (at this time, the outer peripheral surface of the support tube is strongly pressed against the road surface or rubbed against the road surface) or is damaged due to a collision (hole Aki) can be further suppressed.

A boundary portion between the straight tubular portion 21S and the connecting tube portions 21A and 21B in the first support tube 21, a boundary portion between the straight tubular portion 22S and the connecting tube portions 22A and 21B in the second support tube 22, and a third support tube A reinforcing body 75 made of an elastic member is also wound around a boundary portion between the straight tubular portion 23S and the connecting pipe portions 23A and 21B.
Thereby, when transporting the tube connector in an expanded state, the boundary portion that is easily damaged can be protected.

The length (grounding length L2) of the straight tubular portion 21S of the first support tube 21, the straight tubular portion 22S of the second support tube 22, and the straight tubular portion 23S of the third support tube 23 is shorter than the length of the central tube 10. A preferable example is 3000 mm.
The outer diameter of the support tube is preferably 250 to 500 mm, and 280 mm if a suitable example is shown.

  The material constituting the tube connection body is not particularly limited as long as it can form a hollow body that expands and contracts by injecting and discharging air, and is preferably a rubber cloth or a plastic cloth. It is particularly preferable that it is a stretch cloth.

  The thickness of the stretch fabric constituting the tube connector is preferably 0.4 to 1.0 mm, and 0.45 mm if a suitable example is shown.

In addition, it is preferable that the center tube 10 is formed from the laminated body of such a draw cloth.
As a result, the central tube 10 is reinforced compared to a single-layered stretch fabric, and this reinforcement effect prevents the occurrence of damage (perforation) when a vehicle or the like collides with the central tube 10. it can.

Moreover, it is preferable that at least the grounding portion of the support tube is formed of a laminate of stretch fabrics.
As a result, at least the grounding portion of the support tube is reinforced compared to a single-layered stretch fabric, and due to this reinforcement effect, the vehicle is rubbed against the road surface when a vehicle or the like rides on the support tube or collides with it. The occurrence of breakage (perforation) can be suppressed.

In the air inflatable fence of the present embodiment, the first display cloth 51 is provided between the straight tubular portion 21S (outer peripheral surface) of the first support tube 21 constituting the tube connecting body and the central tube 10 (outer peripheral surface). Has been placed.
A second display cloth 52 is disposed between the straight tubular portion 22S (outer peripheral surface) of the second support tube 22 and the central tube 10 (outer peripheral surface).
Further, a third display cloth 53 is disposed between the straight tubular portion 23S (outer peripheral surface) of the third support tube 23 and the central tube 10 (outer peripheral surface).

On both surfaces of the display cloths 51, 52 and 53, a “stop” character mark formed of a reflective material or the like is displayed, and the character mark can be recognized from the front side and the back side of the air inflatable fence.
In addition, the sign displayed on both surfaces of the display cloths 51, 52, and 53 is not limited to such a character sign, and a character, a figure, a symbol, or a sign formed by combining these can be displayed. . Moreover, these signs may be displayed on one surface of the display cloth.

  As a method of arranging the display cloth between the straight tube portion of the support tube and the central tube 10, the straight tube portion (straight tube portion 21 </ b> S, straight tube portion 22 </ b> S, straight tube portion 23 </ b> S) of the support tube and the central tube 10 are arranged. A method of fixing the end portions of the display cloth (the first display cloth 51, the second display cloth 52, and the third display cloth 53) to each outer peripheral surface by adhesion, welding, stitching, or the like can be given.

Although it does not specifically limit as a constituent material of the 1st display cloth 51, the 2nd display cloth 52, and the 3rd display cloth 53, It is preferable that it is formed from the mesh fabric.
By forming the display cloth from the mesh fabric, air permeability is secured in the display cloth, and the overturn (rotation) due to the wind can be effectively suppressed.

  The width (W) of the display cloth is not particularly limited as long as it is a length that can be disposed between the straight tubular portion of the support tube and the central tube 10, but the straight tubular portion (21 S, 22S, 23S) is preferably shorter than the length (L2), specifically 1000 to 4300 mm, and 2500 mm if a suitable example is shown.

  Since the width (W) of the display cloth is shorter than the length (L2) of the straight tubular portion of the support tube, the central tube 10 and the support tubes (first support tube 21, second support tube 22, and third support tube 23) are displayed. Are not completely blocked by the display cloth (the first display cloth 51, the second display cloth 52, and the third display cloth 53), and the ventilation areas 55 are provided at both ends of the display cloth. Therefore, it is possible to further suppress the fall (rotation) due to the wind.

  The height (h) of the display cloth is determined by the separation distance (distance between the outer peripheral surfaces) between the central tube 10 and the support tube, specifically, 330 to 1100 mm, and 420 mm if a suitable example is shown. It is.

  The height (H) of the air inflatable fence of the present embodiment is preferably 1200 to 3000 mm, and 1400 mm if a suitable example is shown.

  According to the air inflatable fence of the present embodiment, any two of the three support tubes, for example, the straight tubular portion 22S of the second support tube 22 and the third support tube 23 as shown in FIG. 7A. By installing the straight tubular portion 23S on the road surface G in a grounded state, the function as a barricade (fence) can be exhibited, and the straight tubular portion 21S of the first support tube 21 and the central tube 10 The 1st display cloth 51 arrange | positioned between will be in the standing state, and the display function (display function recognizable from both the front side and the back side) by the said 1st display cloth 51 can be exhibited.

Further, the center of gravity of the air inflatable fence of the present embodiment is on the central axis (O ₁₀ ) of the central tube 10 and is sufficiently lower than the conventional one, so that the air inflatable fence falls down. It is difficult to install and can be installed in a stable state.

  And when it receives a strong impact such as a vehicle colliding from the front side or the back side of the air inflatable fence installed on the road, this air inflatable fence may rotate around the central tube 10 as the axis. Then, the air inflatable fence stops again in a state where the straight tubular portions of the two support tubes are grounded (the state shown in any of FIGS. 7A to 7C).

  For example, when stopped in the state shown in FIG. 7B, the straight tubular portion 23S of the third support tube 23 and the straight tubular portion 21S of the first support tube 21 are installed on the road surface G in a state where they are grounded. The second display cloth 52 arranged between the straight tubular portion 22S of the second support tube 22 and the central tube 10 can stand up and function as a barricade (fence). The display function by the 2 display cloth 52 can be exhibited.

  7C, when the straight tubular portion 21S of the first support tube 21 and the straight tubular portion 22S of the second support tube 22 are grounded, they are installed on the road surface G. The third display cloth 53 placed between the straight tubular portion 23S of the third support tube 23 and the central tube 10 can stand up and function as a barricade (fence). The display function by the 3 display cloth 53 can be exhibited.

  Thereby, while being able to maintain the function as a barricade (fence) similar to that before the collision, it is possible to maintain the display function by the display cloth that is in a standing state after the rotation.

DESCRIPTION OF SYMBOLS 10 Central tube 21 1st support tube 21S Straight pipe part 21A Connection pipe part 211A 1st part 212A 2nd part 21B Connection pipe part 211B 1st part 212B 2nd part 22 2nd support tube 22S Straight pipe part 22A Connection pipe part 221A First portion 222A Second portion 22B Connecting tube portion 221B First portion 222B Second portion 23 Third support tube 23S Straight tube portion 23A Connecting tube portion 231A First portion 232A Second portion 23B Connecting tube portion 231B First portion 232B First 2 parts 32 Charging port 41 Exhaust port 42 Exhaust port 45 Safety valve 51 First display cloth 52 Second display cloth 53 Third display cloth 55 Ventilation area 60 Handle 65 Loop-shaped band 70 Band-shaped reinforcing body 75 Reinforcing body

Claims (8)

An air expansion type fence having a tube connecting body that expands and contracts by filling and discharging air,
The tube connector is a straight tubular central tube,
The central tube is disposed at 120 ° intervals in the circumferential direction, and each has a straight tubular portion extending in parallel with the central tube while being spaced apart from the outer peripheral surface of the central tube, and at both ends, Three support tubes connected to both ends of the central tube,
A display cloth on which a sign selected from characters, figures, symbols and the like is displayed on at least one surface is disposed between the straight tubular portion of each of the three support tubes and the central tube. Air expandable fence.   The air inflatable fence according to claim 1, wherein the tube connecting body is formed of a rubber or cloth.   The air inflatable fence according to claim 1, wherein the display cloth is made of a mesh fabric.   The air inflatable fence according to any one of claims 1 to 3, wherein the width of the display cloth is shorter than the length of the straight tubular portion of the support tube.   The air inflatable fence according to any one of claims 1 to 4, wherein the central tube is formed of a laminated body of rubber or plastic.   The air inflatable fence according to any one of claims 1 to 5, wherein at least a grounding portion of the support tube is formed of a laminated body of rubber or plastic.   The air inflatable fence according to any one of claims 1 to 6, wherein a plurality of belt-shaped reinforcing bodies made of an elastic member are wound around the outer periphery of the support tube.   The air inflatable fence according to any one of claims 1 to 7, wherein signs are displayed on both surfaces of the display cloth.

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