Safety barrier

Abstract

To provide a shut-off rod with safety means that allows the pulled-out belt to automatically slow down and wrap around the spool in the head, thereby preventing safety accidents and other problems.SOLUTION: A shut-off rod comprises a support 2 fixed to a receiving base, a cylindrical head mounted on the upper end of the support, a spool 4 built into the head, a belt 5 pulled out from the spool 4, and wound so as to be mounted on the head of the adjacent shut-off bar, and a spring 6 acting on the spool so that the belt 5 pulled out from the spool is automatically rewound to the spool after use; when the belt 5 is rewound to the spool 4 by the restoring force of the spring 6, a holder is moved to the outside in the radial direction by the centrifugal force of a sphere arranged in the groove of the holder mounted on an upper housing interlocked with the spool, and is brought into close contact with the inside face of the wall body of the upper housing, and the rewinding speed of the belt is reduced by the reduction of the rotation of the spool.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a safety bar, and more particularly to an improved safety bar equipped with a safety means for slowing down the speed at which a guide belt pulled out from a head housing is rewound onto a spool in the head housing, thereby preventing injury to people nearby and damage to the head of the bar. [Background technology]

[0002] Generally, barriers are used to prevent safety accidents and maintain order by restricting the entry and exit of outsiders to various construction sites and work sites, and by guiding people to move along designated routes at event venues and other places.

[0003] Such barrier bars have a support rod connected to a base placed on the ground, and a belt built into a head located at the upper end of the support rod is pulled out as a means of guiding people through.

[0004] As an example of such a safety barrier, Korean Utility Model Publication No. 20-2011-0010503 (Publication date: November 9, 2011) discloses a safety barrier comprising a barrier bar body having a support bar supported by a receiving base at the bottom, a belt housing connected and fixed to the top end of the support bar, a take-up drum rotatably mounted inside the belt housing, a barrier belt wound around the take-up drum and capable of being pulled out from the barrier bar body, and a winding force generating means for generating a winding force in the winding direction of the barrier belt against the winding drum, wherein the winding force generating means is implemented as a pair of upper and lower spiral springs mounted on the inside of the belt housing and capable of reinforcing the winding force of the barrier belt being pulled out, and the barrier bar body is formed with upper and lower cases connected to the belt housing, the upper case has a connecting rim protruding from its upper surface, and further has an alarm means connected to the upper side of the connecting rim and functioning as a switch.

[0005] Another example of such a blocking bar is a belt housing for a blocking bar and a manufacturing method thereof disclosed in Korean Patent Registration No. 10-1193901 (registration date: October 17, 2012).

[0006] However, in the above-mentioned conventional technology, when the belt is pulled out from the barrier bar and inserted into the head of the adjacent barrier bar to be used as a passage guide means, and then the end of the belt is removed from the adjacent barrier bar, the belt is suddenly rewound due to the restoring force of the spring that serves as a winding force generating means, and in this process, there is a problem that the belt and the knobs attached to its end may injure people next to or near the barrier bar, or damage vehicles or equipment, etc., and therefore a safety measure was desired when the belt is rewound. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Korean published utility model no. 20-2011-0010503 [Patent Document 2] Korean Patent Registration No. 10-1193901 Summary of the Invention [Problem to be solved by the invention]

[0008] In order to solve the problems associated with the above-mentioned conventional cutoff bars, the object of the present invention is to provide a cutoff bar equipped with a safety means that, when the pulled-out belt is rewound into the head disposed at the upper end of the support bar of the cutoff bar, the speed of the belt is automatically reduced and the belt is wound onto a spool in the head. [Means for solving the problem]

[0009] In order to achieve the above object, the safety means-equipped circuit breaker according to the present invention comprises a support post fixed to a cradle, a cylindrical head attached to the upper end of the support post, a spool built into the head, and a wire wound around the spool so that it can be pulled out and attached to the head of an adjacent circuit breaker. tree A breaking rod comprising a belt and a spring acting on a spool so that the belt is compressed when the belt is unwound from the spool and the elastic restoring force causes the unwound belt to automatically rewind onto the spool after use. ,before The spring slows down the rotation of the spool to prevent accidents caused by the free end of the belt when the belt is rewound onto the spool by the restoring force of the spring. On the top plate of the spool The present invention is characterized in that it comprises a safety means disposed on the

[0010] The safety means are disposed in the space inside the upper housing, and Multiple It comprises two divided annular holders each having a groove formed therein, and a metal ball disposed in the groove of each holder.

[0011] The restoring force of the spring along with rotate do The centrifugal force acting radially outward on the balls placed in the holder grooves causes the two holders to move radially outward away from each other, and they are brought into close contact with the inner surface of the wall of the upper housing. ,vinegar The rotation of the pool is slowed down and the speed at which the pulled belt is unwound is also slowed down.

[0012] The protruding end of the central shaft protrudes above the upper plate of the spool. ,above The protruding end of the central shaft protruding above the plate is fitted into a boss extending downward from the center of a cover disposed on the upper housing, and the spool but rotate Can As if attached . [Effects of the Invention]

[0013] Linked to the spool Ruho The centrifugal force of the balls arranged in the grooves of the holder causes the holder to move radially outward and come into close contact with the inner surface of the wall of the upper housing, slowing down the rotation of the spool and slowing down the belt unwinding speed, which has the effect of eliminating safety accidents that previously occurred due to the free end of the belt when it was being unwound onto the spool. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic perspective view of a blocking bar according to the present invention; [Figure 2] FIG. 2 is a schematic exploded perspective view of the head of the blocking bar of FIG. 1; [Figure 3] 2 is a schematic cross-sectional view of the head of the cutoff bar of FIG. 1; [Figure 4] 2 is a cross-sectional view showing the state in which the belt is pulled out from the head of the blocking bar of FIG. 1. FIG. [Figure 5] This is a schematic perspective view showing that in the blocking bar of Figure 1, after the belt is pulled out and its end is inserted into an adjacent blocking bar, the belt is rewound by the restoring force of a spring arranged in the head. DETAILED DESCRIPTION OF THE INVENTION

[0015] The invention will now be described in more detail with reference to the accompanying drawings, which show embodiments of the invention.

[0016] 1 to 3, the safety barrier bar of the present invention comprises a support post 2 fixed to a base 1, a cylindrical head 3 attached to the upper end of the support post, a spool 4 built into the head 3, a belt 5 wound up so that it can be pulled out from the spool 4 and attached to the head of an adjacent barrier bar, a spring 6 acting on the spool so that the pulled out belt 5 is automatically rewound onto the spool after use by the elastic restoring force of the compressed belt 5 when pulled out from the spool, and a safety means for slowing down the spool to prevent accidents caused by the free end of the belt when the belt 5 is rewound onto the spool 4 by the restoring force of the spring 6.

[0017] A support plate 21 is formed at the upper end of the support pillar 2 so as to have a concave groove shape, and an insertion portion 31 connected to the lower end of the head 3 is fastened to the support plate 21 with a bolt 22, thereby attaching the head 3 to the upper end of the support pillar 2.

[0018] The head 3 has a cylindrical side surface cut out at a plurality of positions to form notches 32, and the notches 32 are provided with a plate 33 having an outlet 331 formed therein. Decoration The belt 5 is pulled out through the pull-out opening 331, and the end of the belt is is, A knob portion 51 having a width greater than that of the outlet 331 is fixed.

[0019] An upper housing 36 is fixed to the inside of the upper part of the head 3, The head 3 has a lower housing 34 for accommodating a spring at its lower part. of The outer surface is tightly fitted to the inner surface of the housing, the lower end of the side wall of the lower housing is placed and fixed to the support claw 35 protruding from the inside of the lower part of the head 3, and a hole 341 is formed in the center of the lower housing 34, into which a protruding end portion 41' protruding downward from the bottom surface of the lower plate 41 of the spool 4 is rotatably fitted.

[0020] The bottom plate 342 of the lower housing 34 is formed lower than the upper end of the side wall, and a spring 6 having a spiral spring shape like a clock spring is placed in the formed groove 343, and one end of the spring 6 is fixed to the protruding end 41' of the lower plate 41 of the spool 4, and the other end is fixed to the side wall of the lower housing 34.As a result, as the user pulls out the belt 5, the spool rotates and the spring 6 is elastically wound around the spool, which has an elastic restoring force in the unwinding direction, thereby allowing the belt 5 to be rewound, as will be described later.

[0021] The spool 4 has a lower plate 41 and an upper plate 42 integrally formed at the lower and upper ends of a central shaft portion 43, respectively, and a belt 5 is wound around the central shaft portion, one end of the belt is fixed to the central shaft portion 43, and the other end is positioned outside through the withdrawal opening 331 formed in the head, as described above.

[0022] Two locking portions 45 are protrudingly provided on the upper surface of the upper plate 42 of the spool 4 at positions facing each other in the diametric direction, and a protruding end portion 43' of the central shaft portion 43 protrudes above the upper plate 42.

[0023] Two divided annular holders 37, 37' are arranged on the upper surface of the upper plate 42 of the spool 4 in the space inside the upper housing 36, and each holder has a plurality of grooves 38, 38' (three in the illustrated embodiment) formed therein, and metal balls 39, 39' having a diameter smaller than that of the groove are arranged in each groove 38, 38'. A predetermined gap is formed between the holders 37, 37' so that they can move freely inward and outward in the radial direction within the space inside the upper housing 36 and on the upper plate 42.

[0024] Above the upper plate 42 of the spool 4 formed to protrude from the surface The locking portion 45 It is disposed between the two holders 37, 37', The protruding end 43' of the central shaft 43 protruding above the upper plate 42 is fitted into a boss 44' extending downward from the center of a cover 44 disposed on the upper housing 36, and the spool 4 When rotating Holder 37,37' Also spool 4 It rotates as it moves.

[0025] As a result, when the spool 4 rotates due to the restoring force of the spring 6 and the pulled-out belt 5 is rewound, the engaging portion 45 formed on the upper plate 42 of the spool 4 engages with the protruding end 41'. Holder 37,37' As it rotates 、 holder 37,37’ The two holders 37, 37' are also moved radially outwardly away from each other by the centrifugal force acting on the balls 39, 39' disposed in the grooves 38, 38', and are brought into close contact with the inner surface of the wall of the upper housing 36. ,vinegar The rotation of the spool 4 is slowed down, and therefore the speed of the belt 5 being unwound onto the spool 4 is also slowed down.

[0026] This allows the present invention to provide a safety feature that is linked to the spool. Ruho The centrifugal force of the balls arranged in the grooves of the holder causes the holder to move radially outward and come into close contact with the inner surface of the wall of the upper housing, slowing down the rotation of the spool and slowing down the belt unwinding speed, eliminating problems such as safety hazards caused by the free end when the belt is unwound onto the spool. [Industrial Applicability]

[0027] The present invention can be used to prevent safety accidents by restricting the entry and exit of outsiders to construction sites and work sites, and by guiding the movement routes of people at event and festival venues, and to prevent safety accidents that occur when rewinding belts on barriers to maintain order. [Explanation of symbols]

[0028] 1: Receiving stand 2: Prop 3: Head 4: Spool 5: Belt 6;Spring 36: Upper housing 37,37': Holder 38,38': Groove 39,39': Ball 42: Upper board 45: Locking part

Claims

[Claim 1] A support (2) fixed to the cradle (1); a cylindrical head (3) attached to the upper end of the support (2); a spool (4) built into the head (3), in which a protruding end (43') of a central shaft portion (43) protruding above an upper plate (42) is inserted into a boss (44') extending downward from the center of a lid body (44) disposed on an upper housing (36) of the head (3), and the spool (4) is rotatable; A belt (5) wound up so that it can be pulled out from the spool (4) and attached to the head (3) of the adjacent blocking bar; a spring (6) acting on the spool (4) so ​​that the belt (5) is compressed when it is pulled out from the spool (4) and the pulled out belt (5) is automatically rewound onto the spool (4) after use by the elastic restoring force; a safety means disposed on the upper surface of the upper plate (42) of the spool (4) in the space inside the upper housing (36) fixed to the inside of the upper part of the head (3) so as to prevent an accident caused by the free end of the belt (5) when the belt (5) is rewound onto the spool (4) by the restoring force of the spring (6); the safety means moves radially outward due to centrifugal force during rotation and comes into close contact with the inner surface of the wall of the upper housing (36) fixed to the inside of the upper part of the head (3), thereby slowing down the rotation of the spool (4) and slowing down the speed at which the pulled-out belt (5) is rewound; In a blocking rod comprising: The safety means is arranged on the upper surface of the upper plate (42) of the spool (4) in the space inside the upper housing (36), and comprises two divided annular holders (37, 37') each having a plurality of grooves (38, 38') formed therein, and metal balls (39, 39') disposed in the grooves (38, 38') of the holders (37, 37'), Two locking portions (45) are formed on the upper surface of the upper plate (42) of the spool (4) so ​​as to protrude between the adjacent ends of the holder (37, 37'), and the holder (37, 37') rotates together with the spool (4) due to the restoring force of the spring (6), When the holder (37, 37') arranged on the upper surface of the upper plate (42) rotates together with the spool (4), the balls (39, 39') disposed in the grooves (38, 38') of the holder (37, 37') are centrifugal force acting radially outwardly, causing the holder (37, 37') to come into close contact with the inner surface of the wall of the upper housing (36) in the radial direction, thereby slowing down the speed at which the pulled-out belt (5) is unwound.

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