Retractable barrier device
The telescopic blocking device uses air pressure and hook-and-loop fasteners to prevent sagging, enabling it to extend horizontally and overcome obstacles, ensuring effective sealing and unblocking.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ADOBITSUKU
- Filing Date
- 2024-12-25
- Publication Date
- 2026-07-07
AI Technical Summary
Conventional telescopic blocking devices, such as circuit breakers, can sag due to gravity when extending and are hindered by obstacles like guardrails, preventing them from fully extending and functioning effectively.
A telescopic blocking device with a bag-shaped circuit breaker that uses air pressure to extend horizontally, combined with hook-and-loop fasteners to maintain tension and prevent sagging, allowing it to overcome obstacles.
The device ensures the circuit breaker extends horizontally without drooping, even over obstacles, ensuring effective sealing and unblocking as needed, with the fasteners providing resistance to maintain extension.
Smart Images
Figure 2026112445000001_ABST
Abstract
Description
Technical Field
[0001] The present invention is for temporarily and automatically blocking a passage such as a road, and a bag-shaped flexible blocker that extends in a direction to block the road horizontally from the side of the road is used. When blocking the road, the present invention relates to a telescopic blocking device in which the blocker automatically extends, and when the blocker extends, its tip is prevented from descending in the vertical direction.
Background Art
[0002] Conventionally, as blocking devices, those installed at railway crossings and those installed at toll booths on toll roads are well-known.
[0003] Also, although not a blocking device, a telescopic warning device is also known.
[0004] When a road is damaged due to a natural disaster such as a landslide, or when the lower road (hereinafter referred to as "underpass") that is dug down at an intersection is flooded due to heavy rain, etc., the passage becomes impossible or dangerous, and it is necessary to block the passage of automobiles etc. at the damaged position of the road or in front of the underpass.
[0005] When it becomes necessary to block the passage of automobiles etc. at the damaged position of the road or in front of the underpass, workers are dispatched to the site to manually perform the blocking operation.
Prior Art Documents
[0006]
Patent Document
Disclosure of the Invention
Problems to be Solved by the Invention
[0007] As a blocking device that can be temporarily or periodically opened and closed as appropriate, a telescopic blocking device described in Patent Document 1 has been proposed.
[0008] In the extendable circuit breaker described in Patent Document 1, when air is supplied to the circuit breaker, the tip of the circuit breaker may initially sag due to gravity. However, normally, even if the tip initially sags, if air is continued to be supplied, the circuit breaker will continue to extend and eventually extend horizontally, fulfilling its function as a circuit breaker. However, as shown in Figure 7, if there is an obstruction such as a guardrail 7 in front of the circuit breaker, the tip of the hanging circuit breaker stops in front of the obstruction, and no matter how much air is supplied thereafter, the extension is hindered by the obstruction, and it does not extend sufficiently and is unable to function as a circuit breaker.
[0009] In view of the problems of the conventional devices, the present invention aims to realize a circuit breaker that is configured so that its tip does not droop when it extends, and that extends over obstacles such as guardrails even if there are such obstacles in the direction of the circuit breaker's extension. [Means for solving the problem]
[0010] (1) The present invention relates to an extendable circuit breaker for intermittently sealing a passage, comprising: a box body supported on a base and having an opening in one side wall that opens horizontally; a blower attached to the box body for blowing air; and an extendable bag-shaped circuit breaker mounted inside the box body so as to surround the exhaust port of the blower, wherein when the blower is operated and air is supplied into the circuit breaker, the air pressure inside the circuit breaker increases due to the air pressure from the blower, and the pressure causes the circuit breaker to extend substantially horizontally from the opening, maintaining a state of tension and sealing the passage, and when the operation of the blower is stopped, the air pressure inside the circuit breaker decreases, the tension is relieved and the sealing state is released, wherein the extendable circuit breaker is provided with a means to prevent the tip of the circuit breaker from drooping when the circuit breaker extends from the opening of the box body. In this invention, a fall prevention means is provided to prevent the tip of the circuit breaker from drooping. Therefore, even if there is an obstruction such as a guardrail in the direction of extension of the circuit breaker, the circuit breaker will extend over the obstruction, and thus, even with the obstruction, it can extend to a predetermined position and perform its function as a circuit breaker.
[0011] (2) It is desirable that the engaging side of the hook-and-loop fastener is fixed to the outer side of one of the opposing surfaces of the circuit breaker, and the engaged side of the hook-and-loop fastener is fixed to the outer side of the other surface. If the engaging side of the hook-and-loop fastener is fixed to the outer side of one of the opposing surfaces of the circuit breaker, and the engaged side of the hook-and-loop fastener is fixed to the outer side of the other, then when the circuit breaker is wound up and stored in the box with the engaging and engaged sides of the hook-and-loop fastener in contact, when air is supplied to the circuit breaker, the air pressure causes the engaging and engaged sides of the hook-and-loop fastener to make a buzzing sound and gradually separate, causing the circuit breaker to extend, much like blowing air into a party blower toy, so that its tip does not droop and it extends to a predetermined position, thus enabling the circuit breaker to function.
[0012] (3) It is desirable that hook-and-loop fasteners be fixed to the upper and lower surfaces of the circuit breaker in the vertical direction. If hook-and-loop fasteners are fixed to the upper and lower surfaces of the circuit breaker in the vertical direction, the engagement force between the engaging side and the engaged side of the hook-and-loop fastener acts as resistance, creating a force that opposes the sagging of the circuit breaker, thereby reliably preventing the tip of the circuit breaker from sagging when it extends.
[0013] (4) The engaging side of the hook-and-loop fastener may be fixed to the upper surface of the circuit breaker and the engaged side of the hook-and-loop fastener may be fixed to the lower surface, or the engaging side of the hook-and-loop fastener may be fixed to the lower surface of the circuit breaker and the engaged side of the hook-and-loop fastener may be fixed to the upper surface.
[0014] (5) It is desirable that the hook-and-loop fastener is fixed to the circuit breaker in a straight line parallel to the extending direction. If the hook-and-loop fastener is fixed to the circuit breaker in a straight line parallel to its extending direction, the engaging side and the engaged side can be easily brought into contact and wound up when winding up the circuit breaker.
[0015] (6) It is desirable that the hook-and-loop fasteners be continuously attached. If the hook-and-loop fasteners are continuously attached, the circuit breaker can be wound up without having to check the positions of the engaging and engaged sides.
[0016] (7) The hook-and-loop fasteners may be attached intermittently. In this case, although it is necessary to align the engaging and engaged sides of the hook-and-loop fastener when wrapping around the circuit breaker, the amount of hook-and-loop fastener used can be reduced.
[0017] (8) Preferably, a hook is formed on the engaging side of the hook-and-loop fastener, and a loop is formed on the engaged side of the hook-and-loop fastener. There are several types of hook-and-loop fasteners, but if the engaging side of the fastener has a key-shaped hook and the receiving side has a ring-shaped loop, engagement and disengagement are made easy.
[0018] (9) When housing the circuit breaker in the box, it is desirable that the engaging side and engaged side of the hook-and-loop fastener fixed to the circuit breaker come into contact with each other, and when extending the circuit breaker out of the box, the air pressure inside the circuit breaker increases due to the air pressure from the blower, and the circuit breaker is pushed out of the opening of the box by that pressure, at which point the engaging side and engaged side of the hook-and-loop fastener detach and rotate in the opposite direction to the winding direction, extending horizontally. [Effects of the Invention]
[0019] In the present invention, when the circuit breaker is housed in the box body, it is wound so that the engaging side and the engaged side of the surface fastener fixed to the circuit breaker come into contact with each other. When the circuit breaker is protruded from the box body, the air pressure inside the circuit breaker rises due to the wind pressure from the blower, and the circuit breaker is pushed out from the opening of the box body by that pressure. At that time, the engaging side and the engaged side of the surface fastener rotate in the opposite direction to the winding direction while being detached from each other and extend in the horizontal direction. Therefore, due to the resistance when the engaging side and the engaged side of the surface fastener are detached, the tip of the circuit breaker extends in the horizontal direction without falling. Therefore, even if there is a shielding object such as a guard rail, there is no problem, and it can pass above it and extend in the horizontal direction.
Brief Description of the Drawings
[0020] [Figure 1] It is a front view of the state where the door of one embodiment of the present invention is closed. [Figure 2] It is a front view of the state where the door of one embodiment of the present invention is open. [Figure 3] It is a longitudinal sectional view of the state where the circuit breaker of one embodiment of the present invention is extended. [Figure 4] It is a plan view of the state where the circuit breaker of one embodiment of the present invention is extended. [Figure 5] It is a side view sequentially showing the state where the circuit breaker of one embodiment of the present invention extends. [Figure 6] It is a side view of the state where the circuit breaker of one embodiment of the present invention is extended. [Figure 7] It is a side view of one form of the conventional example.
Embodiments for Carrying Out the Invention
[0021] Hereinafter, an embodiment of the present invention will be described while referring to the drawings. [[ID=3�]]First, an overview of the overall internal structure will be described. In Figure 4, 1 is a rectangular box fixed to the upper end of the base 6, with an opening 2 on its right side. A blower 3 is mounted on the left inner wall to draw in outside air, and a circular ventilation hole 9 is provided on the left inner wall at a location corresponding to the intake port of the blower 3.
[0022] Inside the box 1, a translucent, slightly breathable, bag-shaped circuit breaker 4 is installed so as to surround the exhaust port of the blower 3. When the blower 3 is activated and air is supplied into the circuit breaker 4 (see arrow in Figure 4), the air pressure inside the circuit breaker 4 increases, causing it to extend substantially horizontally from the opening 2 of the box 1 and maintain tension, thereby sealing off a passage 5 such as a road (see Figure 6). Furthermore, after the circuit breaker 4 reaches a tensioned state, even if air continues to be supplied from the blower 3, the supplied air is discharged outward from the permeable portion of the circuit breaker 4. The amount of air supplied from the blower 3 and the amount of air leaking from the circuit breaker 4 are balanced, so that the circuit breaker 4 maintains a tensioned state and does not burst due to air pressure.
[0023] The extended horizontal length of the circuit breaker 4 is 5 m, the cylindrical outer diameter is 50 cm, and the tip is slightly pointed. The aforementioned circuit breaker 4 is made of polyester and has a thickness of 0.5 mm. Furthermore, a triangular auxiliary plate 10 for fixing the base 6 to the ground is fixed to the lower end of the base 6, a control panel box 11 is mounted in the middle of the base 6 in the vertical direction, and a red rotating light 12 is mounted on the upper part of the box body 1.
[0024] Next, when the operation of the blower 3 is stopped, the air pressure inside the circuit breaker 4 decreases, and the tension is relieved. Therefore, if the underpass becomes flooded to a dangerous depth, or if a disaster occurs and it becomes necessary to block passage through the passage 5 at a predetermined location, the blower 3 is activated to supply air into the circuit breaker 4. This increases the air pressure inside the circuit breaker 4, causing it to extend substantially horizontally from the opening of the box, maintaining tension and sealing the passage 5.
[0025] Furthermore, when it is no longer necessary to block the passage, stopping the operation of the blower 3 as described above will reduce the air pressure inside the barrier 4, easing the tension and releasing the blockage, thereby releasing the blockage of the passage 5.
[0026] Furthermore, as shown in Figures 1 and 2, the right door 13A and the left door 13B in the front view are each attached to the box body 1 by hinges 14 so as to be able to swing horizontally, and are configured to be released when air is supplied to the circuit breaker 4 and it expands forward, as the force of this expansion pushes them outward.
[0027] Next, the hook-and-loop fastener 15, which is a feature of the present invention, will be described. As is well known, the hook-and-loop fastener 15 is composed of a hook (engaging side) 15A and a loop (received side) 15B. By bringing the hook 15A and loop 15B into contact, they engage with each other and become adhesive. By separating the hook 15A and loop 15B, they peel apart with a ripping sound, and it is possible to repeat the contact and separation process multiple times.
[0028] In Figure 4, two hooks 15A are fixed to the upper surface of the circuit breaker 4 along its extending direction, and a loop 15B of the same dimensions as the hooks 15A is fixed to the lower surface of the circuit breaker 4 (not shown) at a position corresponding to the hooks 15A. Then, the circuit breaker 4 is wound up so that the hook 15A is on the inside and the loop 15B is on the outside, and the two are engaged, and then stored in the box body 1. Furthermore, at least one or both of the hooks 15A and loops 15B of the hook-and-loop fastener 15 may be intermittently fixed. In this case, although it is necessary to align the hooks 15A and loops 15 of the hook-and-loop fastener 15 when wrapping the circuit breaker, the amount of hook-and-loop fastener can be reduced.
[0029] In this case, the loop 15B may be fixed to the upper surface of the circuit breaker 4 and the hook 15A to the lower surface of the circuit breaker 4. However, if this is done, the hook 15A will be on the outside when the circuit breaker 4 is wrapped around it. When the hook 15A is on the outside, dirt and other debris are more likely to adhere to it, which may reduce the adhesive performance of the hook-and-loop fastener 15.
[0030] When air is supplied into the circuit breaker 4, as shown in Figures 5(A) to (C), the air pressure causes the hook 15A and loop 15B of the hook-and-loop fastener 15 to rattle and slowly separate, causing the circuit breaker 4 to unwind (rotate clockwise) and extend almost horizontally beyond the guardrail 7. At this time, resistance is generated when the hook 15A and loop 15B detach, so the circuit breaker 4 does not sag and there is no risk of it getting caught on the guardrail 7.
[0031] It is as if you were blowing air into a so-called "party blower," and its tip extends to the designated position without drooping, thus enabling the circuit breaker 4 to function. In a typical "party blower toy," a thin coil spring is attached to the top of the cylinder, causing it to rewind towards the user. By blowing air against the elasticity of this coil spring, the spring's resistance prevents the cylinder from descending, causing it to extend straight. However, in this invention, this resistance is achieved using a hook-and-loop fastener instead of a coil spring. Therefore, when winding up the circuit breaker 4, it is necessary to wind it up manually so that the hook 15A and the loop 15B come into contact. [Explanation of symbols]
[0032] 1 Box body, 2 Opening, 3 Blower, 4 Circuit breaker, 5 Passageway (road), 6 Base, 7 Guardrail, 8 Lighter, 9 Ventilation hole, 10 Auxiliary plate, 11 Control panel box, 12 Red rotating light, 13A Right door, 13B Left door, 14 Hinges, 15 Velcro fasteners, 15A Hooks, 15B Loops.
Claims
1. A barrier device for intermittently blocking a passageway, A box-shaped structure supported by a base and having an opening on one side wall that opens horizontally, A blower attached to the aforementioned box for blowing air, Inside the aforementioned box, there is a retractable, bag-shaped circuit breaker that is mounted so as to surround the exhaust port of the blower, In an extendable circuit breaker configured such that when the blower is operated to supply air into the circuit breaker, the air pressure inside the circuit breaker increases due to the air pressure from the blower, and this pressure causes the circuit breaker to extend substantially horizontally from the opening, maintaining tension and sealing the passage, and when the operation of the blower is stopped, the air pressure inside the circuit breaker decreases, the tension is relieved and the sealing is released, A retractable circuit breaker characterized by being provided with a means to prevent the tip of the circuit breaker from drooping when the circuit breaker extends from the opening of the box.
2. The extendable circuit breaker according to claim 1, wherein the engaging side of a hook-and-loop fastener is fixed to the outer side of one of the opposing surfaces in the extending direction of the circuit breaker, and the engaged side of the hook-and-loop fastener is fixed to the outer side of the other surface.
3. The extendable circuit breaker according to claim 2, wherein hook-and-loop fasteners are fixed to the upper and lower surfaces of the circuit breaker in the vertical direction when it is extended.
4. The extendable circuit breaker according to claim 3, wherein the engaging side of the hook-and-loop fastener is fixed to the upper surface of the circuit breaker and the engaged side of the hook-and-loop fastener is fixed to the lower surface.
5. The extendable circuit breaker according to claim 3, wherein the engaging side of the hook-and-loop fastener is fixed to the lower surface of the circuit breaker and the engaged side of the hook-and-loop fastener is fixed to the upper surface.
6. The extendable circuit breaker according to claim 3, wherein a hook-and-loop fastener is fixed to the circuit breaker in a linear manner in a direction parallel to the extending direction.
7. The expandable and retractable blocking device according to claim 6, wherein the hook-and-loop fasteners are continuously fixed.
8. The expandable and retractable blocking device according to claim 6, wherein the hook-and-loop fasteners are intermittently fixed.
9. The expandable and retractable blocking device according to any one of claims 2 to 7, wherein a hook is formed on the engaging side of the hook-and-loop fastener and a loop is formed on the engaged side of the hook-and-loop fastener.
10. The extendable circuit breaker according to claim 2, wherein when the circuit breaker is housed in the box, the engaging side and engaged side of the hook-and-loop fastener fixed to the circuit breaker are wound in contact with each other, and when the circuit breaker is extended out of the box, the air pressure inside the circuit breaker increases due to the air pressure from the blower, and the circuit breaker is pushed out from the opening of the box by that pressure, at which time the engaging side and engaged side of the hook-and-loop fastener detach and unwind as it extends horizontally.