JP2017070375A - Portable slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable slope which is used by a wheelchair user such as an elderly or physically handicapped person by placing the slope across a step occurring between objects, which is particularly formed of a resin material having light weight and high strength, which has excellent safety such as fixing performance, load resistance, and bending resistance when placing the slope across the step, which further has excellent wear resistance of an exterior part such as an installation face and wheelchair passing face, and which can be repaired easily.SOLUTION: The portable slope includes: a plate-shaped core material 5 formed by a resin panel 9 and resin pipe 10 made of a carbon fiber-reinforced plastic and a foam resin material 11, and including inclination faces at front/rear edges; and a polyurea resin layer 6 formed on an outer surface of the plate-shaped core material. The single or plural resin pipes made of a carbon fiber-reinforced plastic are arranged parallelly in a longitudinal direction in an inner part of the foam resin material, and the resin panels made of a carbon fiber-reinforced plastic are arranged on both side faces of the foam resin material along a longitudinal direction to configure the plate-shaped core material.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portable slope that is used by wheelchair users such as elderly people and persons with physical disabilities across a step formed between objects.

  2. Description of the Related Art Conventionally, various portable slopes that are used by wheelchair users such as elderly people and physically disabled people over a step formed between objects have been provided. The required characteristics of the portable slope include not only excellent safety such as fixing performance, load resistance, deflection resistance, etc. across the step, but also exterior parts such as installation surfaces and wheelchair traffic surfaces. Is excellent in wear resistance, and is lightweight and easy to handle.

  In addition to the use of aluminum plates for weight reduction (see Patent Documents 1 and 2), conventional portable slopes are made of fiber reinforced plastic (FRP) on both front and back sides of a foamable resin core material (foamed polyurethane, foamed polystyrene, foamed polyethylene). ) Using a plywood bonded with a light and strong plate material (see Patent Document 3), and a combination of a polycarbonate resin plate and a metal reinforcing plate such as duralumin (see Patent Document 4). Further, in order to improve the durability of the passage surface, a metal (aluminum) thin plate (inside is a resin core) is disclosed (see Patent Document 5).

  Moreover, as a general form of a portable slope, the left slope board and the right slope board which have a wheelchair passage surface on either side are arrange | positioned, and both slope boards can be folded mutually. Each slope plate is provided with a derailment prevention wall along the side edge, and a handle is provided at the outer central portion of each slope plate so that it can be easily carried in a folded state.

JP 2002-097768 A JP 2002-137687 A JP2013-162818A JP 2013-213346 A JP 2013-256780 A

  However, in the above-mentioned prior art, the weight is reduced by combining a foamable resin core material and a fiber reinforced plastic plate, and the surface is a metal (aluminum) thin plate to improve the durability of the traffic surface. However, none of them can simultaneously achieve weight reduction and improved durability of exterior parts such as traffic surfaces and installation surfaces.

  Therefore, in view of the above-described situation, the present invention intends to solve the problem that a wheelchair user such as an elderly person or a disabled person uses a portable slope that is used over a step formed between objects. It is composed of a high-strength resin material, and has excellent safety such as fixing performance, load resistance, and deflection resistance when it is passed over a step, and exterior parts such as the installation surface and wheelchair passage surface are also excellent in wear resistance. Another object is to provide a portable slope that can be easily repaired.

  In order to solve the problems described above, the present invention provides a portable slope that is used by a wheelchair user over a step formed between objects, a resin panel and a resin pipe made of carbon fiber reinforced plastic, a foamable resin material, A portable slope comprising a plate-like core material having an inclined surface at the front and rear end portions and a polyurea resin layer formed on the outer surface of the plate-like core material is formed ( Claim 1).

  Specifically, inside the foamable resin material, one or more resin pipes made of carbon fiber reinforced plastic are arranged in parallel in the longitudinal direction, and carbon is formed on both side surfaces along the longitudinal direction of the foamable resin material. It is preferable to arrange a resin panel made of fiber reinforced plastic to form the plate-like core material (claim 2).

  Furthermore, it is more preferable that a polycarbonate hollow resin plate is laminated on the upper surface of the foamable resin material to form the plate-like core material.

  In addition, it is also preferable that left and right slope plate members having a polyurea resin layer formed on the outer surface of the plate-shaped core member are provided, and the bottom surfaces of both slope plate members are connected to each other with a flexible connecting band so that they can be folded. (Claim 4).

  Here, the upper part of the carbon fiber reinforced plastic resin panel provided on the outer side surfaces of both slope plate members is set to protrude upward from the foamable resin material or the hollow resin plate made of polycarbonate, and is covered with a polyurea resin layer. It is more preferable that the upward projecting portion of the resin panel is used as a derailment prevention wall.

  The portable slope of the present invention as described above can achieve a significant weight reduction compared to an aluminum slope, and uses a resin panel and resin pipe made of carbon fiber reinforced plastic for the plate-like core material. In addition, by covering the outer surface with a high-strength polyurea resin layer, it has excellent safety such as fixing performance, load resistance, deflection resistance, etc. when it is passed over a step, and exterior such as installation surface and wheelchair traffic surface The part is excellent in wear resistance, and when it is cracked or broken, it can be easily repaired by applying a polyurea resin with a collision mixed spray gun. Since the outer surface of the portable slope of the present invention is covered with polyurea resin, naturally, the installation surface is also formed of a polyurea resin layer, so that, for example, the frictional resistance against the train entrance / exit and the platform surface is increased, Therefore, the use state is stable and the wear resistance is also excellent.

  In addition, a single or a plurality of resin pipes made of carbon fiber reinforced plastic are arranged in the longitudinal direction inside the foamable resin material, and carbon fiber reinforced plastic is disposed on both side surfaces along the longitudinal direction of the foamable resin material. By disposing a resin panel made of the resin to form the plate-like core material, it has excellent deflection resistance despite being lightweight.

  Further, by stacking a polycarbonate hollow resin plate on the top surface of the foamable resin material to form the plate-shaped core material, the wheelchair passage surface can be further strengthened.

It is a perspective view of the portable slope which concerns on this invention. It is a cross-sectional view of a portable slope. It is a partial expanded sectional view of a portable slope similarly. It is the longitudinal cross-sectional view of the edge part of a portable slope similarly. It is a perspective view of the state which folded the portable slope. It is sectional drawing of the state which folded the portable slope similarly.

  Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. 1 to 6 show an embodiment of the present invention, in which reference numeral 1 is a portable slope, 2 is a slope plate member, 3 is a connecting band, 4 is a handle, 5 is a plate-like core material, and 6 is a polyurea layer. Respectively.

  The portable slope 1 of the present invention is used by a wheelchair user over a step formed between objects, and includes left and right slope plate members 2 and 2, and the bottom surfaces of both slope plate members 2 and 2 are connected to each other. It is connected with a flexible connecting band 3 so that it can be folded, and a handle 4 is provided at the outer central portion of each slope plate member 2 to facilitate carrying. In addition, inclined surfaces 7 are formed at both ends of the slope plate member 2 and a wheel removal preventing wall 8 is provided along the outer longitudinal direction.

  More specifically, as shown in FIGS. 2 to 4, the portable slope 1 is formed by a resin panel 9 and a resin pipe 10 made of carbon fiber reinforced plastic, and a foamable resin material 11. The left and right slope plate members 2, 2 having a plate-like core member 5 having inclined surfaces 7, 7 and a polyurea resin layer 6 formed on the outer surface of the plate-like core member 5 are connected by the connecting band 3. This is the structure. Here, the left and right slope plate members 2 and 2 are bilaterally symmetric, and the connection band 3 is also formed of a polyurea resin sheet and bonded so as to cross the bottom surface of the slope plate member 2.

  Specifically, as shown in FIG. 2, the resin pipe 10 made of carbon fiber reinforced plastic is arranged in the longitudinal direction in a single or a plurality in parallel with the foamable resin material 11, and the foamable resin material 11. The plate-like core material 5 is formed by disposing carbon fiber reinforced plastic resin panels 9 and 9 on both side surfaces along the longitudinal direction. Further, as shown in FIGS. 2 and 3, a polycarbonate hollow resin plate 12 is laminated on the upper surface of the foamable resin material 11 to form the plate-like core material 5.

  Then, a polyurea resin layer 6 is formed on the outer surface of the plate-like core material 5 by applying a polyurea resin with a collision mixing spray gun.

  Here, the upper part of the carbon fiber reinforced plastic resin panel 9 provided on the outer side surface of the both slope plate members 2 is set so as to protrude upward from the foamable resin material 11 or the polycarbonate hollow resin plate 12, and polyurea resin The upper protruding portion of the resin panel 9 that is covered with the layer 6 is used as the anti-derailing wall 8.

  The polyurea resin used in the present invention is produced by urea bonding between isocyanate and a curing agent having an amino group, but the reaction is very fast and is characterized by contact curing in a few seconds. If an isocyanate and a curing agent having an amino group are applied to the surface of the material 5 with a collision-mixing spray gun, a polyurea resin layer 6 having a predetermined thickness is immediately formed, and is repeatedly applied to obtain a desired thickness. Further, in the polyurea resin, the curing agent is polyamine, and when the strain (elongation) is 2%, it is more preferable that the tensile stress is 10 MPa or more and the breaking stress is 20 MPa or more. The polyurea resin used in this embodiment is a trade name “RESTAR # 350” of Starlight Industry Co., Ltd.

  Here, the polyurea resin layer 6 can be colored in a desired color by mixing a pigment with a raw material, and can improve mechanical properties by mixing an inorganic material or a short fiber. In order to mix these fillers such as pigments, inorganic materials, and short fibers into the polyurea resin layer 6, the filler is sprayed at the same time when applied with a collision mixing spray gun, or one or both of the isocyanate and the curing agent is preliminarily applied. What is necessary is just to mix a filler. In addition, the polyurea resin can be made flame retardant by mixing a flame retardant, and the weather resistance can be further improved by applying an ultraviolet protective top coat.

  The polyurea resin used in the present invention comprises an isocyanate and a curing agent having an amino group, and particularly uses a polyamine as the curing agent. A polyurea resin is cured by a reaction in which a urea bond is formed by mixing an isocyanate and a curing agent having an amino group. Since the urea bond formation reaction is very fast, such as several seconds, it is difficult to perform normal molding using a molding die. Therefore, a coating film is formed on the surface of the substrate by a method in which an isocyanate supplied from an independent raw material supply hose and a curing agent having an amino group are applied by a collision mixing spray gun.

  The characteristics of general polyurea resins are that they can be cured quickly and form a good coating film at low temperatures, have excellent chemical resistance, have excellent adhesion to the substrate surface, and have an elongation of 280%. It is mentioned above that the adhesiveness can be maintained sufficiently following cracks and the like.

  The specifications of the portable slope 1 of this embodiment are as shown below. The slope plate member 2 has a total length of 1500 mm, a width of 303 mm and a thickness of 30 mm, and the height of the anti-derailing wall 8 is 30 mm. The resin panel 9 made of carbon fiber reinforced plastic has a thickness of 1.5 mm, and the resin pipe 10 has a diameter of 28 to 30 mm. The foamable resin material 11 is Kaneka Corporation's trade name “Kanelite Foam” and has a thickness of 30 mm. The polycarbonate hollow resin plate 12 has a thickness of 4 mm. The polyurea resin layer 6 has a thickness of about 1 mm. The portable slope 1 configured as described above satisfied the standard defined in JIS T9207: 2008. In addition, the weight of the portable slope 1 of this embodiment is about 7 kg. In contrast, the weight of a total aluminum portable slope of the same size is about 17 kg.

  The portable slope 1 is used over a step formed between objects. The upper surface of each slope plate member 2, 2 of the portable slope 1 is a wheelchair passage surface, and both end portions of the bottom surface are installation surfaces. And when carrying the said portable slope 1, as shown in FIG.5 and FIG.6, it folds so that the bottom face of each slope board member 2 and 2 may overlap in the part of the said connection belt | band | zone 3. As shown in FIG.

DESCRIPTION OF SYMBOLS 1 Portable slope 2 Slope board member 3 Connection band 4 Handle 5 Plate-like core material 6 Polyurea resin layer 7 Inclined surface 8 Derailment prevention wall 9 Carbon fiber reinforced plastic resin panel 10 Carbon fiber reinforced plastic resin pipe 11 Foamable resin Material 12 Polycarbonate hollow resin plate

Claims (5)

  In a portable slope used by wheelchair users over a step formed between objects, it is formed of a carbon fiber reinforced plastic resin panel and resin pipe, and a foamable resin material, and has inclined surfaces at the front and rear ends. A portable slope comprising a plate-shaped core material and a polyurea resin layer formed on the outer surface of the plate-shaped core material.   Inside the foamable resin material, a single or a plurality of resin pipes made of carbon fiber reinforced plastic are arranged in parallel in the longitudinal direction, and on both sides along the longitudinal direction of the foamable resin material are made of carbon fiber reinforced plastic. The portable slope according to claim 1, wherein a resin panel is arranged to serve as the plate-like core material.   The portable slope according to claim 1 or 2, wherein a polycarbonate hollow resin plate is laminated on the upper surface of the foamable resin material to form the plate-shaped core material.   The left and right slope plate members in which a polyurea resin layer is formed on the outer surface of the plate-like core material are provided, and the bottom surfaces of both slope plate members are connected to each other with a flexible connecting band so that they can be folded. The portable slope according to any one of the above items.   The upper part of the carbon fiber reinforced plastic resin panel provided on the outer side surfaces of both slope plate members is set to project upward from the foamable resin material or the polycarbonate hollow resin plate, and is covered with a polyurea resin layer. The portable slope according to claim 4, wherein the upward protruding portion of the resin panel serves as a derailment prevention wall.

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