JP4180037B2 - Road sign pillar with crossing prevention function - Google Patents

Description

  The present invention relates to a road sign pillar having a function of preventing a pedestrian from crossing installed on a road surface such as a center line of a roadway, a median strip, and a boundary part of a sidewalk.

  As shown in FIG. 10, a steel shelf b is installed in the median strip a of the road to prevent crossing. However, in this case, a vehicle or the like collides with the steel fence. If this happens, the vehicle or steel fence may be damaged, leading to a secondary accident. In FIG. 10, C is a roadway.

  In order to improve the above-described problems, a required number of rows of hollow road sign pillars made of an elastic body are arranged on the road surface at a predetermined interval to prevent crossing prevention. In this way, since the road sign pillar is made of an elastic body, when a vehicle or the like collides, the road sign pillar is elastically deformed to prevent the road sign pillar or the vehicle from being damaged, and the possibility of leading to a large secondary accident can be reduced. .

  However, in the regulation based only on the above road sign pillars, there is a space between adjacent road sign pillars so that people can freely pass through.For this reason, for example, a position away from the station When there is a pedestrian crossing, there is a problem that even if a required number of road sign pillars are provided in order to restrict crossing from near the station, people cross through the road sign pillars.

In order to improve the problems of the prior art as described above, it is possible to project a beam outward from one side or both sides of a hollow road sign pillar made of an elastic body and actually pass through it. Road sign pillars have been proposed that can be thought of as being unable to pass through and have the effect of preventing crossing. An example is shown in the following patent document.
JP 2001-81746 A JP 2001-182021 A JP 2002-348820 A JP 2003-105726 A

An example of the prior art is shown in FIG. In addition, FIG. 11 is a thing of the said patent document 2. FIG.
In this prior art, a beam mounting hole 102 is provided near the top of a hollow marker column body 101 having a desired restoring elasticity, and a hollow beam 103 made of the same material as the marker column body is inserted into the hole 102, In this state, the head 104 is molded by the urethane foam casting method, so that the marker column main body 101, the beam 103, and the head 104 are integrally coupled. In this figure, 105 is a reflecting material such as a retroreflective sheet, and 106 is a connecting hole for connecting adjacent beams with a string or the like.

  In this conventional example, as described above, the beam 103 is projected from one side or both sides of the hollow marker column body 101 having restoring elasticity, so that the beam 103 is disposed on the road surface and the adjacent beam When the ends are joined together, it is actually possible to pass through, but it is thought that it cannot be passed through visually, and the effect of preventing crossing can be exhibited.

  However, in the conventional example shown in FIG. 11, since the beam that is integrated with the side of the sign post protrudes from the side of the sign post body, not only does the beam interfere with handling, but the handling becomes worse. As shown in FIG. 5, there is a problem that the useless space 108 exists in the cardboard box 107 and the cost is increased. In addition, the code | symbol 109 in a figure is a base for road surface installation.

  Further, the above-mentioned patent document discloses a structure in which the marker column main body and the beam are formed separately and are integrally coupled to each other via a fixing member in the field. However, the conventional one has a problem that the number of parts increases and the cost increases, or a lot of work is required for installation work.

  The present invention improves the above-described problems of the prior art, enables the beam and the marker column body to be attached and detached with a minimum of component parts, and particularly facilitates the assembly work in the field easily and quickly. It is an object of the present invention to provide a road sign pillar having a crossing prevention function that can be performed on the road.

  In order to achieve the above-described object, the present invention provides a hollow sign post body standing on a road surface, a hollow beam inserted through a through hole provided near the top of the sign post body, and a penetrating through of the sign post body. A fixing mechanism that removably fixes the beam inserted through the hole to the sign post body, and the fixing mechanism is inserted into the top of the main body in a state where the beam is inserted into the through hole. A bush embedded in and fixed to the pin, and a pin that is detachably inserted into the beam via the bush. An undercut portion is formed in the bush, and the undercut portion of the bush is engaged with the outer periphery of the pin. It is characterized in that a projection is formed to prevent the pin from coming off.

  Further, the present invention is characterized in that the retaining by the undercut of the bush and the projection of the pin is performed by rotating the pin after inserting the pin.

  Furthermore, the present invention is characterized in that a reinforcing member is inserted into the beam to give rigidity to the beam so that the free end side of the beam does not hang down.

  As described above, the present invention provides a fixing mechanism for the marker column main body and the beam, the bush embedded and fixed in the head formed in the top of the main body in a state where the beam is inserted into the marker column main body, Since it is composed of pins that are detachably inserted into the beam via the bush, the number of parts is reduced and the cost is reduced. It can be completed simply by rotating the pin and rotating the pin, so that the installation work at the site can be performed very simply and quickly.

  Further, according to the present invention, since the beam is provided with rigidity by attaching a reinforcing body in the beam, the free end side of the beam can be prevented from sagging and an orderly appearance can be maintained.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a front view showing an embodiment of a road sign post according to the present invention, a hollow sign post main body 1 standingly installed from a road surface, and a road surface molded integrally with the lower end of the sign post main body. And a beam 3 assembled so as to form a T-shape near the top of the sign post body. Reference numeral 4 denotes a reflector such as a retroreflective sheet.

  Since the sign post body 1 is a well-known one widely used as a line-of-sight guide sign for lane separation, pedestrian boundary display, etc., detailed description thereof is omitted, but for example, polyurethane having the following physical properties is used. It is configured so that when a vehicle or the like collides with it, it is elastically deformed to absorb and relieve the impact and can be restored when the vehicle passes.

Tensile fracture strength: 14.7 MPa (Test method JIS K 7311)
Tensile elongation at break: 300% (Test method JIS K 7311)
Tear fracture strength: 49 N / mn (Test method JIS K 7311)
Hardness: Durometer A90 (Test method JIS K 7311)

  However, the present invention is not limited to the above polyurethane, and an elastic body such as ethylene vinyl acetate copolymer (EVA) or low density polyethylene (LDPE), or a resin close to the elastic body may be used. it can.

  In the case of this embodiment, the beam 3 is made of polyurethane having the same physical properties as the sign post body 1, but in that case, in order to prevent the free end side of the beam 3 from sagging, a reinforcing body is provided inside the beam 3 during molding. 31 is inserted.

  The reinforcing body 31 is made of a resin such as polyethylene or polyethylene terephthalate (PET), and polylene terephthalate (PET) is used in this embodiment. The physical properties are as follows.

Tensile fracture strength: 133 MPa (Test method JIS C 2151)
Tensile elongation at break: 244% (Test method JIS C 2151)

  As described above, the present invention is a road sign composed of a hollow sign post body 1 standing upright from a road surface and a beam 3 assembled so as to form a T shape near the top of the sign post body. In the pillar, the fixing mechanism of both is connected via a bush 6 embedded and fixed in a head 5 filled and formed in the top of the main body in a state where the beam 3 is inserted into the sign post main body 1. It is characterized by comprising a pin 7 that is detachably inserted into the beam 3.

  2 to 5 show the main part of the present invention. FIG. 2 is an enlarged cross-sectional view corresponding to part A of FIG. 1, FIG. 3 is an explanatory view of the assembly method, and FIG. FIG. 5 is a three-dimensional view showing an example of a bush.

  As shown in these figures, when the head 6 is formed in a state where the beam 3 is inserted into the beam insertion hole 11 provided in the vicinity of the top of the sign post body 1, An undercut portion that has a cylindrical shape with an uneven ridge 61 provided on the outer periphery so as to be integrally coupled with the pin 5, and engages with the projection of the pin by rotating the pin after inserting the pin 7 therein 62 is formed. That is, the undercut portion 62 is formed with a pin insertion hole 63 having a shape as shown in FIG. 5 in which the pin 7 with the projection can be inserted and removed at the center, and the pin insertion hole 63 from above. When the pin 7 with the protrusion is inserted and then the pin 7 is rotated by 90 °, for example, the protrusion of the pin is engaged with the undercut portion 62 to prevent the pin 7 from coming off.

  As shown in FIGS. 2 and 3, when the pin 7 is inserted into the head 5 via the bush 6, the tip 7 penetrates through the pin holes 32 and 33 formed in the beam 3. A projection 71 having a length that reaches the pin hole 51 formed in the head 5 and having an upper portion opened in the outer diameter direction is formed at a position corresponding to the height position of the bush 6 above the pin hole 51, and further above the pin A pin head 73 having a groove 72 for seven rotational operations is formed. The groove 72 may be a protrusion.

  The bush 6 and the pin 7 are resin molded products such as polyurethane, polyethylene, and polypropylene. In this embodiment, the bush 6 and the pin 7 are not particularly limited, but the bush 6 is made of polyurethane having the following physical properties. The pin 7 was similarly molded using polypropylene having the following physical properties.

Bush physical properties Tensile fracture strength: 43 MPa (Test method JIS K 6301)
Tensile elongation at break: 270% (Test method JIS K 6301)
Hardness: JIS A99 (Test method JIS K 6301)

Physical properties of pin Tensile fracture strength: 23 MPa (Test method JIS K 6758)
Tensile elongation at break: 200% (Test method JIS K 6758)
Hardness: Rockwell R scale 70 (Test method JIS K 6758)

  The head portion 5 is formed by filling and curing foamed polyurethane in the same state as the beam 3 is inserted through the insertion hole 11 of the sign post body 1 and fixing and holding the bush. For example, it is as follows.

Tensile fracture strength: 7.8 MPa (Test method JIS K 7311)
Tensile elongation at break: 340% (Test method JIS K 7311)
Hardness: Durometer A86 (Test method JIS K 7311)

  As described above, in the present invention, the fixing mechanism for the marker column main body and the beam can be attached to and detached from the beam via the bushing embedded in the head portion filled and formed at the top of the main body. Since it consists of a pin to be inserted, the number of parts can be reduced and the cost can be reduced. In particular, the assembly work in the field is to insert the pin into the bush after inserting the beam into the sign post body and rotate the pin. Therefore, the installation work at the installation site can be performed very easily and quickly.

  In the embodiment shown in FIG. 2 and FIG. 3, the beam 3 is made of a material having elasticity similar to that of the sign post body 1, and in this case, the beam 3 is reinforced in order to prevent the free end from sagging. Although the embodiment in which the body 31 is inserted is shown, the present invention is not limited to such an embodiment.

  FIG. 6 is a second embodiment showing an example thereof, in which 1 is a marker column body, 3 is a beam, and a bush 6 embedded in and fixed to a head 5 formed on the top of the marker column body 1; The pin post 7 and the pin 7 that are detachably assembled to the bush constitute a fixing mechanism for the sign post main body and the beam in the same manner as in the embodiment shown in FIGS. 2 and 3, but the beam configuration is different. is doing. That is, in this embodiment, the beam 3 ′ is constituted by a composite resin tube extending in the axial direction while the elastic resin 3-a and the hard resin 3-b are alternately and continuously formed by a two-color molding method. It is possible to prevent the free end of the beam from sagging without using the reinforcing body used in the first embodiment by providing the required elasticity with the resin 3-a and increasing the hardness with the hard resin 3-b. It is a thing.

  FIG. 7 shows a third embodiment. That is, in this embodiment, the mechanism for fixing the marker post body 1 and the beam 3 is constituted by the bush 6 and the pin 7, which is exactly the same as that in the nineteenth embodiment. A beam was formed using a resin paper tube 3 ″ having the following physical properties made of a non-woven fabric made of synthetic resin.

Tensile strength: 9.7 MPa (Test method JIS L 1016)
Elongation: 42% (Test method JIS L 1016)

  In this embodiment, as described above, by using the resin paper tube 3 ″ made of a non-woven fabric as a beam, the weight is reduced and it is possible to prevent the beam from sagging due to its own weight.

  In addition, the road sign pillar according to the present invention is a pedestal of the same size as a commonly used road fence and is molded integrally with the sign pillar main body, and is installed upright on the road surface. The pedestal can be downsized and installed in the mount-up 8 or the curb 9 as shown in FIG. 8 or FIG. In FIG. 8 or FIG. 9, 10 is a miniaturized pedestal, 11 is a bolt embedded in the pedestal, and 12 is an embedding leg. This configuration is well known as an installation structure of a road sign post. Therefore, detailed description thereof is omitted.

It is a front view which shows the 1st Embodiment of this invention. It is an expanded sectional view of the principal part of this invention corresponded to the A section of FIG. It is explanatory drawing of an assembly | attachment state. It is a three-dimensional view showing an example of an assembly pin. It is a three-dimensional view showing an example of an assembly bush. It is a partial front view which shows 2nd Embodiment. It is a partial front view which shows 3rd Embodiment. It is a partial cross section figure which shows the modification of installation structure. It is a partial cross section figure which shows the other modification of an installation structure. It is explanatory drawing which shows the prior art example which installed the steel fence in the center separation zone. It is a front view which shows an example of the conventional road sign pillar. It is explanatory drawing which shows the malfunction of the prior art example shown in FIG.

Explanation of symbols

1: Marking column main body, 2: Pedestal, 3: Beam, 3 ′: Elastic resin, 3 ″: Resin paper tube, 5: Head, 6: Bush, 7: Pin, 8: Mount up, 9: Curb 11: Beam insertion hole, 11: Insertion hole, 31: Reinforcing body, 32, 33: Pin hole, 51: Pin hole, 61: Concavity and convexity, 62: Undercut part, 63: Pin insertion hole, 70: Steel, 71: Protrusion, 72: Groove, 73: Pin head, 101: Marking column body, 102: Hole, 103: Beam. 104: head, 107: cardboard box, 108: space.

Claims (5)

  A sign post body made of an elastic body standing on the road surface, a beam inserted into a through hole provided near the top of the sign post main body, and a beam inserted into the through hole of the sign post main body to the sign post main body The fixing mechanism is detachably fixed, and the fixing mechanism can be detachably attached to the beam via the bush, embedded in the head filled in the top of the main body, and the bush. The pin is inserted, and an undercut portion is formed in the bush, and a protrusion that engages with the undercut portion of the bush is formed on the outer periphery of the pin to prevent the pin from coming off. Road sign pillar with a crossing prevention function.   2. The road having a crossing prevention function according to claim 1, wherein the pin is prevented from coming off by the undercut portion of the bush and the projection of the pin by rotating the pin after inserting the pin. Signpost.   The road sign post having a crossing prevention function according to claim 1, wherein the beam is constituted by a hollow elastic body and the beam is reinforced by a reinforcing member to prevent the beam from falling down on the free end side. A road sign pillar that is constructed.   The road sign post having a crossing preventing function according to claim 1, wherein the beam is constituted by a composite resin tube extending in an axial direction while an elastic resin and a hard resin are alternately continued to form a beam free end. A road sign pillar configured to prevent side drooping. A road sign post having a crossing prevention function according to claim 1, wherein the beam is constituted by a resin paper tube made of a synthetic resin non-woven fabric to prevent the beam free end from sagging. A road sign pillar characterized by

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