Cone bar opening and closing device

Abstract

To enable safe opening and closing of traffic cone bars without requiring manual operation. [Solution] The cone bar (B) consists of a rotating body (R) into which the base end is inserted and integrated, and a fixed body (M) that is fitted from above onto a road cone (C) located at the base end of the cone bar. The core cylinder (19) of the rotating body is inserted and fitted into the bearing flange (24) and sheath cylinder (26) of the fixed body so as to be rotatable around the vertical center line (OO). The rotating body is connected to the fixed body by a pair of symmetrical tension coil springs (32) facing each other on its diameter line, so that the cone bar is kept in a stopped state with the entrance and exit of the traffic control area (A) closed when the rotating body is in a neutral position (NN).

Description

[Technical Field]

[0001] The present invention relates to a device capable of safely opening and closing a cone bar for a road cone without requiring manual operation. [Background Art]

[0002] Generally, by horizontally bridging a cone bar of a required length at a constant installation height between adjacent road cones, which are safety devices, work sites such as road construction and civil engineering construction work are compartmentalized. However, when workers related to the work enter and exit (pass through) the compartment as needed for carrying in / out construction materials, eating, resting, relieving oneself, or other purposes, it is extremely troublesome that the cone bar must be removed from the road cone one by one, and if a person steps over the cone bar without removing it, there is a risk of falling.

[0003] A cone bar that addresses such a problem is disclosed in Patent Document 1. This cone bar (10) includes a rod-shaped bar main body (20), annular fitting parts (30) provided at both ends of the bar main body for fitting onto road cones (70), and connecting parts (40) that connect the bar main body (20) and the fitting parts (30), are bendable and are made of a spring material or a rubber material having restoring force after bending. The bending direction of the connecting parts (40) is restricted to the vertical direction by a restricting body (50). [Prior Art Documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent No. 7079456 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] However, in the configuration of the cone bar (10) described in Patent Document 1, even if one fitting part (30) can remain fitted into the road cone (70), the other fitting part (30) must be removed from the road cone (70), and the bar body (20) must be lifted. Therefore, if workers are carrying construction materials or other luggage, lifting the bar body (20) with one hand is dangerous and makes it difficult to pass in a stable posture.

[0006] Furthermore, even if it were possible to pass through, the removed fitting part (30) would have to be reattached to the road cone (70), which would also force the driver into an unstable posture.

[0007] Furthermore, since the fitting portion (30) for the road cone (70) and the connection portion (40) between it and the bar body portion (20) are located at both ends of the bar body portion (20), a bending direction restrictor (50) must also be attached to each pair of fitting portions (30) and connection portions (40), in addition to the spring material or rubber material. This unnecessarily complicates the required configuration and leads to problems such as inferior mass production efficiency, durability, and dust resistance. [Means for solving the problem]

[0008] The present invention aims to solve these problems, and in order to achieve this objective, claim 1 provides a rotating body comprising a bar support head that receives the base end of a horizontal cone bar and a core cylinder integrally extended downward from the bar support head,

[0009] It consists of a fixed body comprising a bearing flange attached and fixed to a road cone and a sheath cylinder integrally extended upward or downward from the bearing flange,

[0010] The core cylinder of the rotating body is inserted and fitted from above into the bearing flange and sheath cylinder of the stationary body so that it can rotate around the vertical centerline of both cylinders,

[0011] The bar support head or core cylinder of the rotating body and the bearing flange of the stationary body are connected by a plurality of tensile elastic wire members arranged in a radially symmetrical distribution around the vertical center line.

[0012] The rotating body is characterized in that, in the neutral position, the cone bar supported by its bar support head is set to remain stationary, closing the entrance and exit of the traffic control area demarcated by it.

[0013] Claim 2 is characterized in that the plurality of tensile elastic wires all consist of tensile coil springs with substantially the same operating length and tensile force.

[0014] Claim 3 is characterized in that the bearing flange of the fixed body is fitted over the load cone from above and fixed in an anti-rotation manner such that its sheath cylinder stands upright inside the hollow interior of the load cone.

[0015] Claim 4 provides that a cylindrical bar support head in the rotating body has a support arm receiving opening for the cone bar formed through it,

[0016] The core cylinder, which hangs integrally from the slender central protrusion of the bar support head, is inserted and fitted from above into the core cylinder receiving port of the bearing flange in the fixed body,

[0017] The bearing flange has a sheath tube that surrounds the core tube suspended integrally from the core tube receiving port,

[0018] The rotating body's bar support head and the stationary body's bearing flange are connected by a pair of opposing, symmetrical tensile elastic wires extending in the vertical direction.

[0019] Claim 5 provides that a bolt support bush is fixed to the lower end of the core cylinder of the rotating body, while a bolt receiving base is fixed to the corresponding lower end of the sheath cylinder of the fixed body,

[0020] A pivot bolt for rotatably holding the core cylinder relative to the sheath cylinder is vertically provided extending across between the upper and lower sides of the bolt support bush and the bolt receiving base.

[0021] In claim 6, a cylindrical head cover is attached and fixed to the bar support head of the rotating body from above, and a pair of opposing support arm receiving communication ports positioned corresponding to the support arm receiving port of the cone bar are formed in the head cover, and

[0022] The head cover is inserted and fitted onto the bearing flange of the fixed body from above, and the periphery of the two tension elastic filaments is entirely covered by the head cover.

[0023] In claim 7, a support arm receiving port for a cone bar is formed through the cylindrical bar support head of the rotating body,

[0024] a core cylinder integrally hanging down from the narrow center protrusion of the bar support head is inserted and fitted from above into the core cylinder receiving port cylinder of the bearing flange of the fixed body, while

[0025] a sheath cylinder surrounding the core cylinder is integrally hung down from the core cylinder receiving port cylinder of the bearing flange, and

[0026] a pair of locking flanges that integrally project laterally from the middle part of the bar support head of the rotating body or the upper end of the core cylinder, and a locking frame piece attached and fixed to the upper end of the bearing flange of the fixed body at a position corresponding to the locking flanges, are connected by a pair of opposing symmetric tension elastic filaments extending along the lateral direction.

[0027] In claim 8, a support arm receiving port for a cone bar is formed through the cylindrical bar support head of the rotating body,

[0028] a core cylinder integrally hanging down from the narrow center protrusion of the bar support head is inserted and fitted from above into the core cylinder receiving port cylinder of the bearing flange of the fixed body, while

[0029] The bearing flange has a sheath cylinder that surrounds the core cylinder, which is integrally extended upward from the core cylinder receiving port of the bearing flange,

[0030] The rotating body is characterized in that the lower end of a core cylinder that protrudes downward from the bearing flange of the stationary body and a locking stay that is attached and fixed to the lower end of the bearing flange of the stationary body so as to be in a position corresponding to the lower end of the core cylinder are connected by a pair of opposing, symmetrical tensile elastic wires that extend substantially in the lateral direction.

[0031] Furthermore, claim 9 is characterized in that the bearing flange of the fixed body is inserted into the load cone from below such that its sheath cylinder stands vertically inside the hollow interior of the load cone, and the locking stay attached to the lower end of the bearing flange is fixed in a state in which it is pressed against the inner conical surface of the load cone. [Effects of the Invention]

[0032] According to the configuration of claim 1, a rotating body, which is rotatably inserted and fitted into a fixed body attached to a road cone so as to rotate around a vertical centerline, is connected to the fixed body via a plurality of tensile elastic wires arranged in a radially symmetrical distribution around the vertical centerline. As a result, the cone bar is kept in a stationary state, closing the entrance and exit of the traffic control area, when the rotating body is in a neutral position. Therefore, personnel involved in construction, accidents, events, etc., entering and exiting the traffic control area can push open the cone bar with their lower bodies while walking (moving forward) normally, without the need for manual opening and closing operations.

[0033] When the aforementioned persons enter or exit the restricted traffic area, they push open the cone bar that spans the entrance to the area. The rotating body of the opening and closing device rotates clockwise or counterclockwise while pulling on multiple tensile elastic wires. As soon as the pushing force on the cone bar is released by the persons' movement, the rotating body is automatically rotated in the opposite direction by the restoring force of the tensile elastic wires, quickly returning to its original neutral position, thus maintaining the entrance closed by the cone bar.

[0034] Therefore, the problems of the conventional technology mentioned at the beginning are completely solved. In other words, it can be provided as a particularly suitable, safe, and convenient cone bar opening and closing device in traffic control areas such as construction sites where it is not possible to use hands to attach or detach cone bars or open and close cone bars due to the need to carry construction materials and other goods. The necessary configuration is simple, so it is possible to expect maximum mass production efficiency and durability. [Brief explanation of the drawing]

[0035] [Figure 1] This is an oblique view showing the overall schematic of a cone bar opening and closing device according to the first embodiment of the present invention. [Figure 2] This is an enlarged side cross-sectional view of the above-mentioned opening and closing device. [Figure 3] This is a cross-sectional view taken along line 3-3 in Figure 2. [Figure 4] This is a cross-sectional view taken along line 4-4 in Figure 2. [Figure 5] This is a front view of the stationary cone bar with the entrance and exit of the traffic control area closed, with the rotating head cover removed. [Figure 6] This is a cross-sectional view taken along line 6-6 in Figure 5. [Figure 7] This is a front view showing the cone bar pushed outwards from the traffic control area at a desired angle. [Figure 8] This is a cross-sectional view taken along line 8-8 in Figure 7. [Figure 9]This is a cross-sectional plan view corresponding to Figure 8, showing the cone bar pushed open by an arbitrary angle toward the inside of the traffic restriction area. [Figure 10] This is a side cross-sectional view corresponding to Figure 2, showing an opening and closing device for a cone bar according to a second embodiment of the present invention. [Figure 11] This is a side cross-sectional view, also corresponding to Figure 2, showing an opening and closing device for a cone bar according to a third embodiment of the present invention. [Modes for carrying out the invention]

[0036] The following describes various embodiments of the present invention in detail with reference to the drawings. Figures 1 to 9 show a cone bar opening and closing device according to the first embodiment, where (C) is a plurality of road cones set up on the road surface, and cone bars (B) are horizontally placed between adjacent road cones, thereby forming a traffic restriction area (A) for work sites such as road construction and civil engineering construction sites, as well as parking lots, bicycle parking areas, accident sites, event venues, sports stadiums, and other traffic restriction areas. Outside of this traffic restriction area (A) becomes a pedestrian walkway (P). The installation height of the cone bars (B) is usually 70 cm, but they may be installed higher or lower.

[0037] However, in some cases, both ends of a cone bar (B) having a certain length (for example, 1m to 3m) are not supported by adjacent road cones (C), and only one end (base end) is supported by a road cone (C), as suggested in Figure 1, while the remaining free end (tip end) approaches the road cone (C) or other fixed structures (for example, pillars, fences, walls, etc.) in a way that prevents passage, thereby forming the aforementioned traffic restriction area (A).

[0038] In any case, a support arm (11) extends integrally from one end (base end) of any single cone bar (B), and is supported by a road cone (C) installed at a position corresponding to that end. The support arm (11) in the illustrated embodiment is made of the same fiber-reinforced plastic (FRP) or ABS resin pipe material as the cone bar body (10), but its diameter is appropriately slender.

[0039] The road cone (C) is roughly conical in shape, gradually narrowing towards the top. In the illustrated embodiment, its upper end is circularly opened as a safety lamp receiving cylinder (13) with a keyway (12) as shown in Figures 2-4. A key (not shown) protruding laterally from the base (socket) of the safety lamp (14) is inserted from above through the keyway (12) and then rotated by a certain angle to securely attach the safety lamp (14) to the upper end of the road cone (C) in a way that prevents it from coming loose.

[0040] As shown in the enlarged views of Figures 2 to 9, the opening and closing device for the cone bar (B) according to the first embodiment described above consists of a rotating body (R) into which the support arm (11) of the cone bar (B) is inserted and integrated, and a fixed body (M) that is placed over the road cone (C) from above and integrated. The rotating body (R) is assembled in a plug-fit state with respect to the fixed body (M) so that it can rotate around the same vertical center line (OO) of both.

[0041] Specifically, the rotating body (R) comprises a cylindrical bar support head (15) made of ABS resin, and a thin center protrusion (17) that tapers downwards via a conical surface (16). The support arm (11) of the cone bar (B) is inserted into a horizontal support arm receiving port (18) formed through the bar support head (15) and integrated with it. The tapering conical surface (16) functions as a relief surface to prevent excessive contact (interference) between the bar support head (15) of the rotating body (R) and the tensile elastic wire material (tensile coil spring) described later, which is twisted and deformed when the rotating body (R) rotates.

[0042] (19) is a core tube of a certain length, made of glass fiber reinforced polymer (GFRP) pipe material, and its upper end is inserted into the center protrusion (17) of the bar support head (15) via adhesive or a roll pin and integrated. (20) is a bolt support bush facing the center protrusion (17), which is also made of ABS resin, and the lower end of the core tube (19) is inserted into it via adhesive and fitted into it.

[0043] Furthermore, (21) is the head cover of the rotating body (R), and consists of a disc-shaped head plate (21a) made of ABS resin and a cover cylinder (21b) made of glass fiber reinforced resin (GFRP) that hangs integrally from its peripheral edge, and the head plate (21a) is attached and fixed to the bar support head (15) of the rotating body (R) by a plurality of countersunk screws (22).

[0044] (23) is a pair of opposing support arm receiving ports formed in the cover cylinder (21b) of the head cover (21), which correspond to the support arm receiving port (18) that penetrates the bar support head (15) of the rotating body (R) as shown in Figure 3, but is larger than the support arm receiving port (18), so that the rotating body (R) can be inserted and fitted onto the support arm (11) of the cone bar (B) while covered by its head cover (21).

[0045] In this case, the upper end of the cover cylinder (21b) of the head cover (21) is attached and fixed to the peripheral edge of the head plate (21a) via adhesive, while the lower end of the cover cylinder (21b) is loosely fitted into the bearing flange of the fixed body (M), which will be described later, thereby covering the entire periphery of the tensile elastic wire material (tensile coil spring), which will be described later, and maintaining a dustproof and waterproof state.

[0046] On the other hand, the stationary body (M) is made of ABS resin and has a circular shape that is approximately the same size as the head plate (21a) of the rotating body (R), and is equipped with a bearing flange (24) that is shaped in a roughly inverted U-shape in cross-section as shown in Figures 2 and 3. A core cylinder receiving port (25) that rotatably supports the core cylinder (19) on the rotating body (R) side protrudes downward integrally from the center of the bearing flange (24), and a cylindrical decorative cover (24a) that covers the upper end of the load cone (C) also protrudes downward from the peripheral edge of the bearing flange (24).

[0047] (26) is a sheath cylinder of a certain length that surrounds the core cylinder (19), and is made of the same glass fiber reinforced resin (GFRP) pipe material as the core cylinder (19), and its upper end is inserted and fitted into the core cylinder receiving opening cylinder (25) of the bearing flange (24) with adhesive. (27) is a bolt receiving base which is about the same diameter as the core cylinder receiving opening cylinder (25), and is also made of ABS resin, and the lower end of the sheath cylinder (26) is inserted and fitted into it with adhesive.

[0048] Furthermore, the tip (lower end) of the pivot bolt (28), which is screwed into the bolt support bush (20) on the rotating body (R) side from above, is inserted in an unfixed state into a bolt receiving groove (29) formed in the bolt receiving base (27) on the fixed body (M) side, and is held in a pivot state in which the rotating body (R) can rotate around the same vertical center line (cylindrical core) (OO) of both the rotating body (R) and the fixed body (M). (30) is a polyethylene spacer or bush interposed between the upper and lower parts of the bolt support bush (20) and the bolt receiving base (27).

[0049] Furthermore, a wedge-shaped anti-rotation key (31) made of ABS resin is fixed with adhesive to the upper end of the bearing flange (24) of the sheath cylinder (26) on the fixed body (M) side, which is surrounded by the decorative cover (24a). As shown in Figure 4, this key (31) corresponds to the keyway (12) of the safety light receiving cylinder (13) installed at the upper end of the road cone (C). The sheath cylinder (26) of the fixed body (M) is, so to speak, replaced by the safety light (14), and the key (31) is inserted into the road cone (C) from above so as to engage with the keyway (12), allowing the bearing flange (24) of the fixed body (M) to be placed over the road cone (C).

[0050] In this way, the existing keyway (12) on the upper end of the road cone (C) is utilized, and the key (31) on the fixed body (M) side is fitted into the keyway (12), so that the fixed body (M) is kept in a literally fixed state, and the rotating body (R) can be rotated relative to the fixed body (M) by the cone bar (B).

[0051] Furthermore, the configuration is not limited to the one in which the fixing body (M) is fitted onto the road cone (C) by fitting the key (31) into the existing keyway (12). In short, any configuration that allows the fixing body (M) to be attached and fixed to the existing road cone (C) in an anti-rotation state is acceptable.

[0052] Furthermore, (32) consists of a pair of identical tensile elastic wire members, preferably stainless steel wire tension coil springs with a constant working length and tensile force extending in the vertical direction (up and down direction) as shown in Figures 2, 5, and 6, where the upper end of each is detachably secured to the bar support head (15) of the rotating body (R) by a hook fitting (33) such as an eye bolt or screw eye, while the lower end is detachably secured to the bearing flange (24) of the fixed body (M) by a hook fitting (34) such as an eye bolt or screw eye, and the rotating body (R) and the fixed body (M) are connected via these multiple tensile elastic wire members (tensile coil springs) (32).

[0053] In this case, as is clear from Figures 6, 8, and 9, the pair of tensile elastic wire members (tensile coil springs) (32) are attached to the bar support head (15) on the rotating body (R) side and the bearing flange (24) on the stationary body (M) side in a symmetrical arrangement (distribution) facing each other on the diameter line (180 degrees). Regardless of whether the rotating body (R) is rotated clockwise or counterclockwise relative to the stationary body (M), the pair of tensile elastic wire members (tensile coil springs) (32), which are pulled and twisted, deform back in the opposite direction due to their restoring force, thereby keeping the rotating body (R) in a neutral position (NN) at rest.

[0054] If such a rotating body (R) can provide a biasing force that returns it to a neutral position (NN) relative to the stationary body (M), then a tension rubber cord or other flexible elastic wire material may be used instead of the tension coil spring in the illustrated embodiment.

[0055] Furthermore, in the illustrated embodiment, a pair (2) of tensile elastic wires (tensile coil springs) (32) are used, arranged symmetrically opposite to each other on the diameter line (180 degrees). However, it is not limited to a pair of two; a total of four tensile elastic wires may be used, which are arranged symmetrically opposite to each other on a diameter line (180 degrees) perpendicular to the diameter line (180 degrees). Alternatively, multiple (preferably an even number) of tensile elastic wires may be used, arranged in an overall radially symmetrical distribution pattern centered on the same core of the other core cylinders (19) and sheath cylinders (26).

[0056] Furthermore, if the core cylinder (19) of the bar support head (15) of the rotating body (R) rotates smoothly and correctly around the vertical center line (OO) relative to the core cylinder receiving port (25) of the bearing flange (24) of the fixed body (M), and there is no risk of lateral swaying such as wobbling, then it is not necessary to assemble the rotating body (R) to the fixed body (M) side in a pivotal state via the pivot bolt (28), and the installation of the pivot bolt (28), bolt support bush (20), bolt receiving base (27), etc., may be omitted.

[0057] Next, Figure 10 shows a second embodiment of the present invention, and the differences in the configuration of the opening and closing device for the cone bar (B) in this embodiment compared to that of the first embodiment are summarized below.

[0058] In other words, in the first embodiment shown in Figures 1-9, the bar support head (15) of the rotating body (R) and the bearing flange (24) of the stationary body (M) are connected by a pair of tensile elastic wires (tensile coil springs) (32) extending in the vertical direction, while in the second embodiment shown in Figure 10, they are connected via a pair of tensile elastic wires (tensile coil springs) (32) extending in the horizontal direction.

[0059] To achieve this, the tapered conical surface (16) of the bar support head (15) in the rotating body (R) is omitted, and a pair of locking flanges (35) that replace hook fittings (33) such as eye bolts or eye bolts are extended laterally from the upper end of the core cylinder (19) or the middle of the bar support head (15), and one end (inner end) of a tensile elastic wire (tensile coil spring) (32) is detachably locked into a locking hole (36) opening in the locking flange (35).

[0060] On the other hand, a pair of locking frame pieces (37) corresponding to the locking flange (35) on the rotating body (R) side are attached and fixed to the upper end (flat top surface) of the bearing flange (24) on the fixed body (M) by rivets (38), and the other end (outer end) of the tensile elastic wire material (tensile coil spring) (32) is detachably locked into a locking hole (39) that opens at the tip of the locking frame piece (37) facing the locking flange (35).

[0061] In this case, the pair of locking flanges (35) are integrally extended from the bar support head (15) or core cylinder (19), whereas the pair of locking frame pieces (37) are bent from a stainless steel plate separate from the fixed body (M). However, the locking frame pieces (37) may be a single, integrated piece as long as they have a pair of locking holes (39).

[0062] In the second embodiment shown in Figure 10, the pivot bolt (28), bolt support bush (20), and bolt receiving base (27) of the first embodiment are absent. The core cylinder (19) on the rotating body (R) side and the sheath cylinder (26) on the fixed body (M) side are fixed and maintained in a parallel state to each other by a cylindrical bush (40) made of ABS resin, which is interposed at their lower ends. The other configurations in the second embodiment are substantially the same as those in the first embodiment, so the same reference numerals as in Figures 1-9 are used in Figure 10, and a detailed explanation is omitted.

[0063] Furthermore, Figure 11 shows a third embodiment of the present invention, and the differences in the configuration of the opening and closing device for the cone bar (B) in this embodiment compared to those of the first and second embodiments are summarized below.

[0064] In the first and second embodiments shown in Figures 1-10, the bearing flange (24) of the stationary body (M) is placed over the load cone (C) from above and fixed in a rotation-preventing state by a key (31). Due to the way it is attached to the load cone (C), not only the bearing flange (24) of the stationary body (M), but also the bar support head (15) of the rotating body (R) and its bar support head (15) or core cylinder (19), and the bearing flange (24) of the stationary body (M) or the locking frame piece (37) fixed thereto, are exposed to the outside from the upper end of the load cone (C) (however, in the first embodiment, the whole of these is covered by a head cover (21)). In the third embodiment shown in Figure 11, the whole of the rotating body (R), except for the bar support head (15), is housed inside the hollow interior of the load cone (C) and is not visible from the outside.

[0065] In other words, in the configuration of the third embodiment, the sheath cylinder (26) surrounding the core cylinder (19) of the rotating body (R) extends upward (taller) from the core cylinder receiving port (25) of the bearing flange (24) in the stationary body (M), in the opposite direction to the first and second embodiments. Furthermore, a pair of symmetrical locking stays (42) for tensile elastic wire members (tensile coil springs) are attached and fixed to the lower end (flat bottom surface) of the bearing flange (24) via a donut-shaped stainless steel seat plate (41). (43) are multiple rivets for this purpose.

[0066] In this case, the multiple locking stays (42) are bent from a stainless steel plate into a shape that can preferably make surface contact with the tapering conical inner surface of the road cone (C), and locking holes (44) for tensile elastic wire (tensile coil spring) (32) are formed at their tips (lower ends).

[0067] On the other hand, the core tube (19) that hangs integrally from the center protrusion (17) of the bar support head (15) in the rotating body (R) is inserted and fitted from above into the core tube receiving port (25) of the bearing flange (24) in the fixed body (M), and is rotatable around the vertical center line (core) (OO). The core tube (19) penetrates the bearing flange (24) and extends to a position that protrudes below the seat plate (41), and both ends of a tensile elastic wire (tensile coil spring) (32) are detachably locked between a hook fitting (45) such as an eye bolt or screw eye fixed to the lower end of the core tube (19) and a locking hole (44) that opens in the locking stay (42) on the fixed body (M) side. The core cylinder (19) and the locking stay (42) are connected by a tensile elastic wire (tensile coil spring) (32) of a constant working length that extends almost horizontally (in the direction of inclination). (46) is a bolt receiving bush fixed to the lower end of the core cylinder (19) with adhesive or a roll pin, and is also made of ABS resin.

[0068] Furthermore, although it was explained that in the opening and closing device of the cone bar (B) according to the third embodiment, the entire rotating body (R), excluding the bar support head (15), is housed inside the hollow interior of the road cone (C), the entire opening and closing device is inserted into the hollow interior of the road cone (C) from below, so that the core cylinder (19) and sheath cylinder (26) are installed in an upright position as shown in Figure 11.

[0069] In other words, if the bar support head (15) of the rotating body (R) is inserted first into the hollow interior of the road cone (C) until the locking stay (42) of the fixed body (M) makes surface contact with the inner circumferential surface of the tapered cone of the road cone (C), then the upper end of the sheath cylinder (26) surrounding the bar support head (15) of the rotating body (R) and its core cylinder (19) will protrude outward by a certain length (H) from the upper end of the road cone (C) and be exposed.

[0070] In this case, a male screw (47) is engraved on the upper end of the sheath tube (26) where a certain length (H) is exposed, and a tightening ring (nut) (48) made of ABS resin is screwed onto the male screw (47). Therefore, by rotating it from the outside and tightening it strongly, the sheath tube (26) of the fixing body (M) is pulled up, and the locking stay (42) of the fixing body (M) is pressed firmly against the inner cone surface of the road cone (C), fixing it in an anti-rotation state, and preventing the cone bar opening and closing device as a whole from falling downward from the road cone (C). (49) is a cylindrical reinforcing bush made of ABS resin that is interposed and fixed to the upper end of the core tube (19) and the sheath tube (26).

[0071] By effectively utilizing the conical shape of the existing road cone (C), which gradually narrows towards the top, the fixing body (M) of the cone bar opening and closing device can be fixedly installed inside its hollow interior, thereby achieving excellent aesthetic appeal and waterproofing effects. Furthermore, since the other components of the third embodiment are substantially the same as those of the first embodiment, only the same reference numerals as in Figures 1-9 are used in Figure 11, and a detailed explanation is omitted.

[0072] Figure 1 shows an example of the use of the cone bar opening and closing device according to the first embodiment described above. The support arm (11) at the base end (one end) of the cone bar (B) is horizontally supported on the road cone (C) by the opening and closing device of the cone bar (B). The free end (other end) of the cone bar (B) approaches the adjacent road cone (C) and another road cone (C), keeping the entrance and exit of the traffic restriction area (A) closed and preventing (blocking) pedestrians other than authorized personnel from freely entering (passing through) the traffic restriction area (A) from the pedestrian walkway (P) outside.

[0073] In the closed state of the traffic restriction area (A) demarcated by the horizontal cone bar (B), as is clear from Figures 5 and 6, a rotating body (R) connected to a fixed body (M) which is fitted over and integrated with the road cone (C) from above, by a pair of symmetrical tensile elastic wires (tensile coil springs) (32) extending in the vertical direction, is stopped in a neutral position (NN).

[0074] Therefore, for example, if personnel involved in road construction within the restricted traffic area (A) need to leave the restricted traffic area (A) to the pedestrian walkway (P) outside for the purpose of transporting construction materials, eating, or other necessary reasons, they can simply push open the cone bar (B) horizontally positioned at the entrance / exit by any angle (for example, about 45 degrees as shown in the illustration) in a clockwise direction using their lower body while walking forward, as shown in Figures 5, 6 to 7, 8.

[0075] In this way, as the cone bar (B) is pushed open, the rotating body (R) rotates from its initial neutral position (NN) while pulling the symmetrical pair of tensile elastic wires (tensile coil springs) (32), thereby accumulating a restoring force. As soon as the persons concerned eventually move outside the traffic restriction area (A) and the force pushing the cone bar (B) by their bodies ceases, the rotating body (R) is quickly pulled back to the neutral position (NN) by the restoring force of its tensile elastic wires (tensile coil springs) (32), and the entrance and exit of the traffic restriction area (A) are kept closed by the cone bar (B).

[0076] On the other hand, if persons involved in the aforementioned road construction work need to enter the restricted traffic area (A) from the pedestrian walkway (P) to bring in construction materials, they can simply push open the horizontal cone bar (B) at the entrance by a suitable angle (for example, about 45 degrees as shown in the illustration) in a counterclockwise direction using their lower body while walking forward, as shown in Figures 5, 6 to 9.

[0077] In this way, just as when exiting the traffic restriction area (A) described above, as soon as the pushing force of the person's body against the cone bar (B) is released, the rotating body (R) will be quickly pulled back to the neutral position (NN) by the restoring force of its tensile elastic wire (tensile coil spring) (32), and the entrance and exit to the traffic restriction area (A) will be kept closed by the cone bar (B).

[0078] In any case, the persons in question do not need to touch the cone bar (B) with their hands; they only need to move away from the cone bar (B) that is being pushed open by their bodies, and can safely move construction materials into and out of the traffic restriction area (A). However, if the persons in question are not carrying any goods, they may open the cone bar (B) with their free hand.

[0079] In that case, if the same tensile elastic wires (tensile coil springs) (32) that exert a uniform tensile force are used as a pair of tensile elastic wires (tensile coil springs) (32) arranged symmetrically on the diameter line (180 degrees) between the rotating body (R) and the stationary body (M), then regardless of whether the cone bar (B) is pushed open in the inward or outward direction in the traffic control area (A), the position of the cone bar (B), which is stopped in the closed state by the restoring force of the tensile elastic wires (tensile coil springs) (32), can always be correctly determined to be above the entrance and exit of the traffic control area (A), which is preferable because there is no risk of misalignment.

[0080] The operation and effects of this first embodiment can also be achieved from the configuration of the cone bar opening and closing device according to the second embodiment in Figure 10 and the third embodiment in Figure 11.

[0081] Furthermore, while the single-opening / closing device for the cone bar (B) has been described based on the overall schematic slope view in Figure 1, the present invention can also be applied to a double-opening / closing device, which is a pair of cone bars (B) placed side by side, positioned close enough that their free ends cannot pass each other, in order to accommodate the need to ensure a wide entrance and exit to the traffic-restricted area (e.g., an event venue or sports stadium) (A) and allow a large number of people to enter and exit. [Explanation of Symbols]

[0082] (10) Cone bar body (11) Support arm (12) Keyway (15) Bar support head (16) Conical surface (17)···Center Totsuko (18) Support arm receiving port (19)...Core tube (20) Bolt support bush (21) ····Headcover (21a) ... Head plate (21b) ...Cover tube (22) Countersunk screws (23) Support arm receiving port (24) Bearing flange (24a) ... Cosmetic cover (25) Core tube receiving port (26)... Scabbard tube (27) Bolt receiving base (28) Pivot bolts (29) Bolt receiving groove (30) Spacer (31)...Key (32)...Tensile elastic wire (33)(34)(45)...Hook fittings (35) Locking flange (37) Locking frame piece (41)... Seat board (42) Locking stay (46) Bolt receiving bush (47) Male screw (48) Tightening ring (A) Traffic restriction area (B)·····corn bar (C)·····Road Cone (M)...Fixed body (R)...Rotating body (NN)...neutral position (OO)...Vertical center line

Claims

1. A rotating body (R) comprising a bar support head (15) that receives the base end of a horizontal cone bar (B), and a core cylinder (19) integrally extending downward from the bar support head (15), It consists of a fixed body (M) which comprises a bearing flange (24) attached and fixed to a load cone (C), and a sheath cylinder (26) integrally extended upward or downward from the bearing flange (24), The core cylinder (19) of the rotating body (R) is inserted and fitted from above into the bearing flange (24) and sheath cylinder (26) of the stationary body (M) so that they can rotate around the vertical center line (O-O) of both cylinders (19) and (26), The bar support head (15) or core cylinder (19) of the rotating body (R) and the bearing flange (24) of the stationary body (M) are connected by a plurality of tensile elastic wire members (32) arranged in a radially symmetrical distribution around the vertical center line (O-O). A cone bar opening and closing device characterized in that, in the neutral position (N-N) of the rotating body (R), the cone bar (B) supported by its bar support head (15) is set to remain in a stopped state, closing the entrance and exit of the traffic restriction area (A) that is partitioned by it.

2. The opening and closing device for a cone bar according to claim 1, characterized in that all of the multiple tensile elastic wire members (32) consist of tensile coil springs having substantially the same working length and tensile force.

3. The cone bar opening and closing device according to claim 1, characterized in that the bearing flange (24) of the fixed body (M) is fitted over the load cone (C) from above and fixed in an anti-rotation manner such that the sheath cylinder (26) of the fixed body (M) is positioned vertically inside the hollow interior of the load cone (C).

4. A support arm receiving opening (18) for the cone bar (B) is formed through the cylindrical bar support head (15) of the rotating body (R). The core tube (19), which hangs integrally from the slender center protrusion (17) of the bar support head (15), is inserted from above and fitted into the core tube receiving port (25) of the bearing flange (24) of the fixed body (M), The bearing flange (24) has a sheath cylinder (26) that surrounds the core cylinder (19) hanging down integrally from the core cylinder receiving port (25), The cone bar opening and closing device according to claim 1, characterized in that the bar support head (15) of the rotating body (R) and the bearing flange (24) of the stationary body (M) are connected by a pair of opposing, symmetrical tensile elastic wire members (32) extending in the vertical direction.

5. A bolt support bush (20) is fixed to the lower end of the core cylinder (19) in the rotating body (R), while a bolt receiving base (27) is fixed to the corresponding lower end of the sheath cylinder (26) in the fixed body (M), The opening and closing device for a cone bar according to claim 4, characterized in that a pivot bolt (28) is erected vertically between the bolt support bush (20) and the bolt receiving base (27) so as to hold the core cylinder (19) in a manner that allows it to rotate relative to the sheath cylinder (26).

6. A cylindrical head cover (21) is attached and fixed from above to the bar support head (15) of the rotating body (R), and a pair of opposing support arm receiving communication openings (23) are formed in the head cover (21) that correspond to the support arm receiving opening (18) of the cone bar (B), The cone bar opening and closing device according to claim 4, characterized in that the head cover (21) is inserted and fitted onto the bearing flange (24) of the fixed body (M) from above, and the head cover (21) covers the entire perimeter of both tensile elastic wire members (32).

7. A support arm receiving opening (18) for the cone bar (B) is formed through the cylindrical bar support head (15) of the rotating body (R). The core tube (19), which hangs integrally from the slender center protrusion (17) of the bar support head (15), is inserted from above and fitted into the core tube receiving port (25) of the bearing flange (24) of the fixed body (M), The bearing flange (24) has a sheath cylinder (26) that surrounds the core cylinder (19) hanging down integrally from the core cylinder receiving port (25), The cone bar opening and closing device according to claim 1, characterized in that a pair of locking flanges (35) that integrally protrude laterally from the middle of the bar support head (15) or the upper end of the core cylinder (19) in the rotating body (R), and a locking frame piece (37) that is attached and fixed to the upper end of the bearing flange (24) in the fixed body (M) so as to be in a position corresponding to the locking flanges (35), are connected by a pair of opposing, symmetrical tensile elastic wire members (32) that extend laterally.

8. A support arm receiving opening (18) for the cone bar (B) is formed through the cylindrical bar support head (15) of the rotating body (R). The core tube (19), which hangs integrally from the slender center protrusion (17) of the bar support head (15), is inserted from above and fitted into the core tube receiving port (25) of the bearing flange (24) of the fixed body (M), The bearing flange (24) has a sheath cylinder (26) that surrounds the core cylinder (19) extending upward integrally from the core cylinder receiving port (25), The opening and closing device for a cone bar according to claim 1, characterized in that the lower end of a core cylinder (19) that protrudes downward from the bearing flange (24) of the stationary body (M) in the rotating body (R) and a locking stay (42) that is attached and fixed to the lower end of the bearing flange (24) of the stationary body (M) so as to be in a position corresponding to the lower end of the core cylinder (19) are connected by a pair of opposing, symmetrical tensile elastic wire members (32) that extend substantially in the lateral direction.

9. The cone bar opening and closing device according to claim 8, characterized in that the bearing flange (24) of the fixed body (M) is inserted into the load cone (C) from below such that its sheath cylinder (26) stands upright inside the hollow interior of the load cone (C), and the locking stay (42) attached to the lower end of the bearing flange (24) is fixed in a state in which it is pressed against the inner conical surface of the load cone (C).

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