Road signs

Abstract

To provide a road marking device which is less likely to be detached from an installation surface.SOLUTION: A road marking device comprises a pedestal bonded and fixed to an installation surface and a sign body detachably attached to the pedestal, and the pedestal is provided with a base part having a lower surface as a bonding surface, a male screw part, and a female screw member, the female screw member is screwed from above to the male screw part inserted from below into the through-hole of the sign body to attach the pedestal to the sign body, and a cylindrical elastic member is attached to close a gap between the inner peripheral surface of the sign body inside the through-hole and the male screw part, even when the sign body installed on the installation surface by adhesion receives an external force due to the contact of a vehicle or the like, the elastic deformation of the elastic member reduces the external force transmitted between the base material and the marker, and the release of the base material from the installation surface can be suppressed.SELECTED DRAWING: Figure 14

Description

Technical Field

[0001] The present invention relates to a road marking device that is adhesively fixed and installed at places where vehicles travel, such as roads and parking lots.

Background Art

[0002] Road marking devices installed on roads and parking lots for marking the center line of lanes, lane guiding markings, markings for regulating driving, etc. are fixed to the installation location by a method suitable for the installation location and purpose. For example, methods of fixing with anchor bolts or adhesives have been conventionally used, and various inventions have been proposed for the method of using adhesives.

[0003] For example, in Patent Document 1, a base portion having a hollowing-out portion with an opening on the surface and a main body portion protruding upward from the base portion are provided, and a first anchor bolt for fixing the base portion by screwing it to an anchor nut buried and fixed on the road surface is detachably attached. A method of attaching a road marking body formed at the central portion of the base portion to the road surface by adhesion, wherein a bottom plate material formed to close the opening of the hollowing-out portion is attached to the lower surface of the base portion via the attachment portion, and the bottom plate material is adhered to the road surface by an adhesive applied to the bottom surface of the bottom plate material, has been proposed by the applicant of the present application.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The fixing method shown in Patent Document 1 is designed to firmly adhere and fix the road marking to the road surface using a base plate attached to the base portion. However, it was anticipated that when a vehicle comes into contact with the marking, the impact would be transmitted to the base plate, causing the adhesion to the mounting surface to detach.

[0006] This invention provides a road marking device that is less likely to detach from the installation surface. [Means for solving the problem]

[0007] To achieve the above objective, the present invention has the following configuration. In other words, the road marking device according to the present invention is a road marking device comprising a base that is adhesively fixed to an installation surface and a marking body that is detachably attached to the base, wherein the base comprises a base whose lower surface is an adhesive surface, a male screw portion formed above the lower surface, and a female screw member that can be screwed into the male screw portion, and the marking body It comprises a base and a column that protrudes upward from the base, and the base The base is provided with a through hole through which the male thread portion can be inserted, and the female thread member is screwed from above onto the male thread portion inserted into the through hole from below, and the base is base A cylindrical elastic member is attached to the through hole so as to seal the gap between the inner circumferential surface of the indicator and the male screw portion. Furthermore, the male threaded portion to which the elastic member is attached, and the female threaded portion screwed to the male threaded portion, are formed separately from the indicator body. It is characterized by the following:

[0008] The road marking device according to the present invention includes a base that is fixed to the installation surface by adhesive adhesion and a marking body that is detachably attached to the base, so that the marking body can be installed to the installation surface by adhesive adhesion via the base. Furthermore, the base is provided with a base portion whose lower surface is an adhesive surface, a male threaded portion formed above the lower surface, and a female threaded member that screws onto the male threaded portion. Thus, the marker can be detachably attached to the base by the male threaded portion and the female threaded member. Furthermore, a through hole is formed in the marker body through which the male threaded portion can be inserted, and the female threaded member is screwed onto the male threaded portion inserted into the through hole from below to attach the base to the marker body. Additionally, a cylindrical elastic member is attached to the inside of the through hole to seal the gap between the inner surface of the marker body and the male threaded portion. Therefore, even if the marker body installed on the mounting surface by adhesive is subjected to external forces such as contact by a vehicle, the force is mitigated by the elastic deformation of the elastic member. pedestal The external force transmitted between the material and the marker is reduced, pedestal This can prevent detachment from the mounting surface.

[0009] Furthermore, by compressing the elastic member vertically through the screwing of the female thread member, and elastically deforming it so that the thickness of the cylindrical wall of the elastic member increases, the outer surface of this cylindrical wall is pressed against the inner surface of the marking body, and the inner surface is pressed against the male thread portion, the gap between the male thread portion and the inner surface of the through hole can be effectively sealed by the elastic member, pedestal The elastic member can further reduce the impact and other forces transmitted between the sign and the sign, which is preferable.

[0010] Furthermore, the elastic member is positioned across the entire inside of the through hole, with the upper end of the elastic member in contact with the female screw member, and the lower end of the elastic member in contact with the female screw member. pedestal By bringing it into contact with the base, the effect of mitigating external forces due to the elastic deformation of the elastic member is enhanced, pedestal This is preferable because it can more effectively reduce the impact and other shocks transmitted between the sign and the sign body. [Effects of the Invention]

[0011] The road marking device according to the present invention is less likely to detach from the installation surface. [Brief explanation of the drawing]

[0012] [Figure 1] This is a front view showing one embodiment of the road marking device according to the present invention. [Figure 2] This is a bottom view of Figure 1. [Figure 3]It is a view showing a state in which the column body and the base in FIG. 1 are separated. [Figure 4] It is a view showing a state in which the base and the pedestal in FIG. 3 are separated. [Figure 5] It is a front view showing the pedestal in FIG. 4. [Figure 6] It is a plan view of FIG. 5. [Figure 7] It is a sectional view taken along line A-A of FIG. 6 showing a longitudinal section of the pedestal. [Figure 8] It is a view showing a state in which the pedestal in FIG. 7 is installed. [Figure 9] It is a view showing a longitudinal section of the base in FIG. 4. [Figure 10] (A) is a plan view and (B) is a front view showing the elastic member in FIG. 4. [Figure 11] It is a view showing a state in which the base in FIG. 9 is placed on the pedestal in FIG. 8. [Figure 12] It is an enlarged view showing a state in which the elastic member in FIG. 10 is attached to the through-hole of the base in FIG. 11. [Figure 13] It is a view showing a state in which a female screw member is screwed to the male screw portion in FIG. 12. [Figure 14] It is a view showing the entire pedestal and base in FIG. 13.

Embodiments for Carrying out the Invention

[0013] Embodiments of the present invention will be specifically described based on the drawings. [[ID=​​​​​​​​​​​Furthermore, a reflective sheet 14 having retroreflective properties that reflects irradiated light back towards the light source is attached to the outer surface of the column portion 12. The reflective sheet 14 is wrapped around and attached to the outer surface of the column portion 12, and as shown in Figure 1, three reflective sheets 14 are arranged on the column portion 12 with gaps between them vertically.

[0015] The column 11 is formed from a thermoplastic polyurethane resin so that it has flexibility to bend elastically due to contact with a vehicle, etc., and then return to its original state. However, it is not limited to this, and soft polyolefins, elastomers, etc., can be suitably used. Furthermore, the cap 13 is also made of the same thermoplastic polyurethane resin as the column portion 12 and is fixed to the column portion 12 by methods such as fusion or adhesive bonding.

[0016] Figure 2 is a bottom view of Figure 1. Base 2 has a rectangular shape when viewed from below, with the entire shape composed of curves, and its size in the front-to-back direction is larger than that in the left-to-right direction. Base 2 is made of acrylonitrile-styrene-acrylate resin (ASA resin), which is harder than the column 11, but is not limited to this, and may be formed by selecting or combining synthetic resins other than ASA resin. The column 11 is detachably attached to the base 2. Furthermore, a base 5 having a disc-shaped base 51 is detachably attached to the underside of the base 2.

[0017] Figure 3 shows the column 11 and base 2 separated from each other as shown in Figure 1. A base portion 15 is provided at the lower end of the column 11. The base portion 15 is formed in a substantially cylindrical shape, separate from the column portion 12, and is fixed to the lower end of the column portion 12.

[0018] The upper part of the base 2 is provided with a support recess 21 that is recessed in a shape corresponding to the base portion 15, and the support recess 21 is formed so that the base portion 15 can be inserted into and out of it freely. The inner circumferential surface of the support recess 21 is formed as a support surface 23 capable of supporting the outer circumferential surface 15a of the inserted base portion 15, and the column 11, with the base portion 15 inserted into the support recess 21 of the base 2, is erected with its lower end supported by the support surface 23 of the base 2. Furthermore, the outer circumferential surface 15a of the base portion 15 has multiple rectangular projections 15b that protrude outward in the diameter direction, and each projection 15b is engaged with an engaging portion formed on the support surface 23 of the base 2 to attach the column 11 to the base 2. In other words, the column 11 can be removed from the base 2 by releasing the engagement between each projection 15b and the engaging portion formed on the support surface 23. The support recess 21 and support surface 23 formed in the base 2 are shown in Figure 9, which will be described later.

[0019] Figure 4 shows the base 2 and pedestal 5 separated from the base 2 in Figure 3. The base 5 has a male threaded portion 53 that protrudes upward from the base portion 51, and is attached to the base 2 via this male threaded portion 53. Specifically, the base 5 is attached to the base 2 by inserting the male threaded portion 53 through the base 2 from below and screwing the female threaded member 58, which has a female thread, to the male threaded portion 53 from above the base 2. Below the female threaded member 58, an elastic member 7 is positioned and attached. The elastic member 7 is formed in a cylindrical shape and is installed by inserting the male threaded portion 53 through the inside of its cylindrical wall 71.

[0020] Figure 5 is a front view showing the base 5 in Figure 4, Figure 6 is a plan view of Figure 5, and Figure 7 is a cross-sectional view AA of Figure 6 showing the longitudinal section of the base 5. The base 5 has a disc-shaped base 51 with one through hole 51a near the edge, and a bolt is fixed to the center of the base 51 to form the male threaded portion 53. Specifically, the male thread of the bolt is inserted through the base 51 from below, forming the male threaded portion 53 that protrudes upward from the base 51.

[0021] The bolt is a so-called weld bolt having a disc-shaped head 54, and the head 54 is welded and fixed to a metal base 51. A circular recessed storage section 52 is formed on the lower surface of the base 51 by press forming, and the head 54 of the bolt is housed inside this storage section 52. Although the base portion 51 is formed from a stainless steel plate, it is not limited to this, and any metal material can be suitably used. Specifically, iron-based metal materials including special steels such as stainless steel and ordinary steel, as well as non-ferrous metal materials such as aluminum alloys, can be used. Furthermore, corrosion resistance and other properties may be improved by applying chemical treatments such as chromate treatment, or surface treatments such as plating or painting.

[0022] The base 5 is designed to be fixed to the installation surface G by adhesive, with the lower surface of the base 51 serving as the adhesive surface. Figure 8 shows the base 5 from Figure 7 in place. As shown in Figure 8, the base 5 is bonded to the installation surface G of the installation location, which is made of asphalt or concrete, by applying adhesive 6 to the entire lower surface of the base 51 and bringing it into contact with it. Although the adhesive 6 uses an epoxy-based adhesive, it is not limited to this, and other adhesives such as acrylic resin-based adhesives, urethane resin-based adhesives, thermosetting adhesives such as polyimide-based adhesives, instant adhesives such as cyanoacrylate-based adhesives, and rubber-based adhesives can be suitably used.

[0023] Figure 9 is a cross-sectional view of the base 2 shown in Figure 4. Figure 9 is an end view of the cut section of the base 2. The support recess 21 is formed in a circular concave shape that is recessed downward from the upper surface of the base 2, and its outer circumferential surface is the support surface 23. The support recess 21 has a substantially cylindrical rib 28 projecting upward from the center of its bottom surface, and a circular through-hole 29 extending to the bottom surface of the base 2 is formed throughout the inner surface of the cylindrical wall of this rib 28.

[0024] Figure 10 shows the elastic member 7 of Figure 4, where (a) is a plan view and (b) is a front view. The cylindrical wall 71 of the elastic member 7 is formed to have an outer diameter that corresponds to the inner diameter of the through hole 29 formed inside the rib 28 of the base 2. Furthermore, the circular through-hole 72 formed on the inside of the cylindrical wall 71 has an inner diameter that corresponds to the outer diameter of the male threaded portion 53. The elastic member 7 in Figure 10 is made of ethylene propylene diene rubber (EPDM), but is not limited to this, and may be made of other elastic materials. For example, it can be made by selecting or combining synthetic rubber other than EPDM, natural rubber, polyurethane, polyvinyl chloride or other elastomers.

[0025] Figure 11 shows the base 2 from Figure 9 placed on the pedestal 5 from Figure 8. The base 2 in Figure 11 is placed on the upper surface of the base 51 by inserting the male threaded portion 53 of the pedestal 5 into the inside of the through hole 29, and its orientation can be easily adjusted by rotating it around the male threaded portion 53.

[0026] Figure 12 is an enlarged view showing the elastic member 7 from Figure 10 attached to the through hole 29 of the base 2 from Figure 11. As shown in Figure 12, the elastic member 7 has a male threaded portion 53 inserted inside the through hole 72, the inner circumferential surface 71b of the cylindrical wall 71 is in contact with the outer surface of the male threaded portion 3, the outer circumferential surface 71a of the cylindrical wall 71 is in contact with the inner circumferential surface of the rib 28, and the lower end of the cylindrical wall 71 is in contact with the upper surface of the base portion 51 of the base 5. Furthermore, the elastic member 7 in Figure 12 is formed such that, when the lower end of the cylindrical wall 71 is in contact with another member, the upper end of the cylindrical wall 71 protrudes slightly above the upper end of the rib 28.

[0027] The base 2 shown in Figure 12 is attached to the base 5 by screwing a female threaded member 58, which has an internal thread, onto the male threaded portion 53. Figure 13 shows the state in which the female threaded member 58 is screwed onto the male threaded portion 53 of Figure 12, and Figure 14 shows the entire base 5 and base 2 of Figure 13. The female threaded member 58 is formed as a so-called hexagonal nut and is equipped with a separate washer 58a. The female threaded member 58 shown in Figures 13 and 14 is tightened to the male threaded portion 53 with the appropriate torque, and the washer 58a is screwed in place against the upper end of the rib 28.

[0028] By attaching the column 11 shown in Figure 3 to the base 2 shown in Figures 13 and 14, a road marking device 1 is formed to be installed on the installation surface G as shown in Figure 1. Specifically, the base portion 15 of the column 11 shown in Figure 3 is inserted into the support recess 21 of the base 2, and the projection 15b is engaged with an engaging portion (not shown) formed on the support surface 23 to attach the column 11. In the state where the column 11 is attached to the base 2, the upper part of the female threaded member 58 is covered by the column 11, making it impossible to remove the base 2 from the base 5 by unscrewing the threaded member 58 with a tool. In other words, the road marking device 1 installed on the installation surface G can be removed from the installation surface G by first removing the column 11 from the base 2, and then unscrewing the female threaded member 58 from the male threaded portion 53 and removing it.

[0029] As shown in Figures 13 and 14, the road marking device 1 can reduce the transmission of force between the male threaded portion 53 and the base 2 by the elastic deformation of the elastic member 7, by attaching the elastic member 7 so as to close the gap between the male threaded portion 53 and the rib 28. Specifically, when a vehicle comes into contact with the column 11 or base 2 of the marker body 10, the impact transmitted from the base 2 to the elastic member 7 is mitigated by the elastic deformation of the elastic member 7 before reaching the male screw portion 53 and then transmitted to the base 51. In this way, the impact transmitted to the base 51 is mitigated and reduced by the elastic member 7, making it less likely for the adhesive 6 applied to the lower surface of the base 51 to come loose, and allowing the road marking device 1 to be installed more stably on the installation surface G.

[0030] Furthermore, when the marker body 10 is subjected to force, such as when a vehicle comes into contact with it, the elastic member 7 is expected to suppress the rotation of the rib 28 around the male screw portion 53. In other words, it is expected to suppress the rotation of the base 2 relative to the base 5.

[0031] Furthermore, when vibrations generated on the mounting surface G by vehicles traveling nearby reach the female threaded member 58 through the base 51 and male threaded portion 53 of the base 5, the elastic deformation of the elastic member 7 mitigates and reduces the transmission of these vibrations, which is expected to suppress the loosening of the female threaded member 58 caused by vibrations. In other words, it is expected to suppress the detachment of the base 2 from the base 5 due to the female threaded member 58 loosening and coming off the male threaded portion 53.

[0032] In Figures 13 and 14, the elastic member 7 has its upper end portion of the cylindrical wall 71, which protrudes upward from the rib 28, pushed inward into the through hole 29 by a washer 58a. In other words, the elastic member 7 is compressed vertically between the base 51 of the pedestal 5, to which its lower end abuts, and the washer 58A, to which its upper end abuts. The elastic member 7 is compressed vertically, causing it to elastically deform so that the thickness of the cylindrical wall 71 increases, and the outer circumferential surface 71a and inner circumferential surface 72b of the cylindrical wall 71 are pressed against the inner circumferential surface of the rib 28 and the outer surface of the male threaded portion 53, respectively.

[0033] As described above, the outer peripheral surface 71a and inner peripheral surface 71b of the cylindrical wall 71 are pressed against the rib 28 and the male threaded portion 53, so that the gap inside the through hole 29 of the base 2 is sealed by the elastic member 7 and made to a minimum. By minimizing the gap between the male threaded portion 53 and the rib 28 and the elastic member 7 in this way, when the road marking device 1 is subjected to external forces such as shocks and vibrations, the rattling between the male threaded portion 53 and the rib 28 and the elastic member 7 caused by the gap is suppressed, so that the shocks and vibrations can be more effectively mitigated and reduced by the elastic deformation of the elastic member 7.

[0034] Furthermore, by pressing the outer surface 71a and inner surface 71b of the cylindrical wall 71 together, the gap between the male screw portion 53 and the rib 28 and the elastic member 7 is minimized, effectively preventing water, dust, fine sand, etc. from entering the inside of the road marking device 1 through the inside of the through hole 29. In other words, the elastic member 7 can function as a water-stopping member or a sealing member that prevents the intrusion of fine particles.

[0035] Furthermore, the road marking device 1 according to the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, the male threaded portion 53 formed on the base 5 has male threads formed on the entire portion that protrudes from the upper surface of the base 51, but it is not limited to this. For example, as shown in Figures 13 and 14, a portion without male threads may be provided below the female threaded member 58 to be screwed. [Explanation of Symbols]

[0036] 1 Road marking device 10 Markings 11 Column 12 Pillar section 13 caps 14 Reflective sheet 15 base 2 bases 21 Support recess 23 Support surface 28 Ribs 29 Through hole 5 bases 51 Base 52 Storage compartment 53 Threaded part 58 Screw member 6. Adhesive 7 Elastic members 71 Cylinder wall 72 Through hole G Installation surface

Claims

1. A road marking device comprising a base that is fixed to the mounting surface by adhesive, and a marking body that is detachably attached to the base, The base comprises a base whose lower surface is an adhesive surface, a male threaded portion formed above the lower surface, and a female threaded member that can be screwed into the male threaded portion. The sign body comprises a base and a column that protrudes upward from the base. The base is provided with a through hole through which the male screw portion can be inserted. The female threaded member is screwed from above onto the male threaded portion inserted into the through hole from below, thereby attaching the base to the base, and a cylindrical elastic member is attached to close the gap between the inner circumferential surface of the indicator body and the male threaded portion inside the through hole. A road marking device characterized in that the male threaded portion to which the elastic member is attached and the female threaded portion screwed to the male threaded portion are formed separately from the marking body.

2. The road marking device according to claim 1, characterized in that the elastic member is compressed vertically by the screwing of the female threaded member, elastically deformed so as to increase the thickness of the cylindrical wall of the elastic member, the outer surface of the cylindrical wall is pressed against the inner surface of the marking body, and the inner surface of the cylindrical wall is pressed against the male threaded portion.

3. The road marking device according to claim 1 or 2, characterized in that the elastic member is arranged throughout the entire inside of the through hole, the upper end of the elastic member abuts against the female screw member and the lower end abuts against the base of the pedestal.

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