Slope material

Abstract

Wear can be suppressed. [Solution] A slope material 10 is constructed by extrusion integral molding to have a surface of a base material 20 made of a foamed synthetic resin, and a surface material 30 made of a non-foamed synthetic resin or a foam with a lower foaming ratio than the base material 20, wherein the base material 20 has a bottom surface 21, a back surface 22 rising upward from the rear end of the bottom surface 21, and an inclined surface 23 connecting the upper end of the back surface 22 and the front end of the bottom surface 21, and the surface material 30 has a back portion 31 that covers the back surface 22 of the base material 20, an inclined portion 32 that covers the inclined surface 23 of the base material 20, and a rear end holding portion 33 that protrudes from the lower end of the back portion 31 toward the front end and contacts the bottom surface 21 of the base material 20.

Description

Technical Field

[0001] The present invention relates to a slope material.

Background Art

[0002] Patent Document 1 discloses a slope material composed of a foam of a synthetic resin such as rubber or plastic. The slope material of Patent Document 1 has a bottom surface, a back surface extending vertically from the rear end of the bottom surface, and an inclined surface connecting the upper end of the back surface and the front end of the bottom surface. The back surface of the slope material of Patent Document 1 is arranged so as to abut against a step.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the slope material of Patent Document 1 is composed of a foam of a synthetic resin, wear occurs due to continuous use. For example, when an operator steps on the slope material of Patent Document 1 with his foot, the inclined surface becomes the surface receiving the force. Therefore, the inclined surface is likely to wear. Also, the corner formed by the bottom surface and the back surface is likely to wear because it abuts against a step.

[0005] The present invention has been made in view of such circumstances, and an object thereof is to suppress wear of the slope material, including the inclined surface and the corner.

Means for Solving the Problems

[0006] A slope material for solving the above problems is a slope material constructed by extrusion integral molding such that a surface material made of non-foamed synthetic resin or foam with a lower foaming ratio than the base material is attached to the surface of a base material made of foamed synthetic resin, wherein the base material has a bottom surface, a back surface rising upward from the rear end of the bottom surface, and an inclined surface connecting the upper end of the back surface and the front end of the bottom surface, and the surface material has a back portion that covers the back surface of the base material, an inclined portion that covers the inclined surface of the base material, and a rear end holding portion that protrudes from the lower end of the back portion toward the front end and contacts the bottom surface of the base material. [Effects of the Invention]

[0007] According to the slope material of the present invention, wear can be suppressed. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view of the ramp material according to this embodiment. [Figure 2] Figure 2 is a front view of the ramp material of this embodiment. [Figure 3] Figure 3 shows an example of a modified slope material. [Figure 4] Figure 4 shows an example of a modified slope material. [Modes for carrying out the invention]

[0009] The following describes embodiments of the ramp material according to the present invention. In the following description, the up and down and left and right shown in Figure 2 will be described as the up and down and front and back of the ramp material. As shown in Figure 1, the ramp material 10 is configured in a roughly triangular prism shape.

[0010] The slope material 10 is constructed by extrusion molding so that a surface material 30 made of non-foamed synthetic resin or foam with a lower foaming ratio than the base material 20 is attached to the surface of a base material 20 made of foamed synthetic resin. For this reason, the slope material 10 is lightweight.

[0011] The ramp material 10 may be fixed to the step, but since the ramp material 10 of this embodiment is lightweight and easy to carry, it can also be positioned and used so as to come into contact with the step when needed.

[0012] The ramp material 10 is placed, for example, on the floor surface, and positioned so that the back portion 31 of the surface material 30, which will be described later, abuts against the end surface of the board. The height of the rear end of the ramp material 10 is set to be the same as, or approximately the same as, the height of the front end of the board. This creates a smooth, continuous surface from the top surface of the ramp material 10 to the top surface of the board. In this case, the step refers to the difference in height between the floor surface and the top surface of the board. This prevents tripping over steps and makes movement easier.

[0013] The size of the ramp material 10 can be set appropriately according to the size of the step. (Base material 20) As shown in Figure 2, the base material 20 has a bottom surface 21, a back surface 22 that rises upward from the rear end of the bottom surface 21, and an inclined surface 23 that connects the upper end of the back surface 22 and the front end of the bottom surface 21.

[0014] The base material 20 consists of a foam made of synthetic resin. Examples of foams include polyethylene, polypropylene, and polyvinyl chloride. The foaming ratio of the foam can be set as appropriate, but it is preferably 1.1 to 10 times for ease of molding.

[0015] The angle between the bottom surface 21 and the inclined surface 23 can be acute, and from the viewpoint of stability when a worker steps on the ramp material 10, it is preferably, for example, 3° to 20°. This creates a gently sloping continuous surface from the top surface of the ramp material 10 to the top surface of the board material, thereby suppressing tripping over steps and making movement easier.

[0016] On the upper surface of the inclined surface 23, a depression 24 is formed corresponding to a slit 36 of an inclined portion 32 of a skin material 30, which will be described later. The depression 24 is formed by a mold when the slope material 10 is extrusion-molded integrally. Therefore, the depression 24 extends in the extrusion direction.

[0017] Here, when manufacturing the slope material 10, since the volumes of the front end side portion 41 and the rear end side portion 42 of the base material 20 are different, it is impossible to mold the base material 20 by injecting a foam from one nozzle. The base material 20 is molded by injecting foams from different nozzles into the front end side portion 41 and the rear end side portion 42 of the base material 20, respectively. For this reason, the base material 20 is composed of the front end side portion 41 and the rear end side portion 42, and the front end side portion 41 and the rear end side portion 42 are in contact with each other. Therefore, on the base material 20, an interface surface 43 where the front end side portion 41 and the rear end side portion 42 contact is formed. The interface surface 43 is formed in a straight line or a non-straight line when the slope material 10 is viewed from the extrusion direction.

[0018] (Skin material 30) As shown in FIG. 2, the skin material 30 has a back surface portion 31, an inclined portion 32, a rear end holding portion 33, and a front end holding portion 37. The back surface portion 31 covers the back surface 22 of the base material 20. The inclined portion 32 covers the inclined surface 23 of the base material 20. The rear end holding portion 33 contacts the bottom surface 21 of the base material 20 by protruding from the lower end of the back surface portion 31 toward the front end direction. The front end holding portion 37 contacts the bottom surface 21 of the base material 20 by protruding from the lower end of the inclined portion 32 toward the rear end direction.

[0019] The skin material 30 is made of a non-foamed synthetic resin or a foam having a lower foaming ratio than the base material 20. Examples of the non-foamed material include solids of thermoplastic resins such as polyethylene, polypropylene, and polyvinyl chloride. The same material is used for the foam used for the base material 20 and the non-foamed material used for the skin material 30.

[0020] The portion where the base material 20 and the skin material 30 contact has a fine uneven shape. Thereby, since the contact area between the base material 20 and the skin material 30 becomes large, the base material 20 and the skin material 30 are strongly welded. This fine unevenness is smaller than the slit 36 of the inclined portion 32 which will be described later. This fine unevenness is formed unevenly.

[0021] As shown in FIG. 2, the back surface portion 31 has a recessed portion 34 that is recessed in the front-back direction. For example, the plate material has a convex portion corresponding to the recessed portion 34 on the end surface of the plate material. At this time, by locking the recessed portion 34 and the convex portion of the plate material, a smooth inclined surface can be formed from the upper surface of the slope material 10 to the upper surface of the plate material. Thereby, the step can be eliminated.

[0022] The thickness T1 of the back surface portion 31 can be set as appropriate. For example, it is the same as the thickness T2 of the inclined portion 32. As shown in FIG. 2, a plurality of slits 36 are provided on the upper surface of the inclined portion 32. The plurality of slits 36 are provided in parallel and at equal intervals in the front-back direction. Thereby, when moving using the slope material 10, slipping is suppressed.

[0023] The thickness of the rear end holding portion 33 becomes thinner toward the front end. That is, the tip of the rear end holding portion 33 is tapered. The length L2 in the front-back direction of the rear end holding portion 33 can be set as appropriate. However, it is preferably 1 / 50 to 1 times, more preferably 1 / 10 to 1 / 2 times, and even more preferably 1 / 5 to 1 / 3 times the height L1 of the back surface portion 31.

[0024] The length L3 in the front-back direction of the front end holding portion 37 can be set as appropriate. For example, it is preferably 1 / 50 to 1 times, more preferably 1 / 10 to 1 / 2 times, and even more preferably 1 / 5 to 1 / 3 times the height L1 of the back surface portion 31.

[0025] The tip of the front end holding portion 37 is tapered. The front end holding portion 37 has a raised portion 38 that protrudes upward. The height L4 of the raised portion 38 can be set as appropriate, but for example, it is 1 / 30 to 1 / 5 times the height L1 of the back portion 31.

[0026] <Effects and Effects of the Embodiment> The operation and effects of this embodiment will now be described. (1) The slope material 10 is constructed by extrusion integral molding such that a surface material 30 made of non-foamed synthetic resin or foam with a lower foaming ratio than the base material 20 is attached to the surface of a base material 20 made of foamed synthetic resin. The base material 20 has a bottom surface 21, a back surface 22 rising upward from the rear end of the bottom surface 21, and an inclined surface 23 connecting the upper end of the back surface 22 and the front end of the bottom surface 21. The surface material 30 has a back portion 31 that covers the back surface 22 of the base material 20, an inclined portion 32 that covers the inclined surface 23 of the base material 20, and a rear end holding portion 33 that protrudes from the lower end of the back portion 31 toward the front and contacts the bottom surface 21 of the base material 20.

[0027] Here, for example, when a worker steps on the ramp material 10 with their foot, the inclined portion 32 of the surface material 30 becomes the surface that receives the force. With the above configuration, the surface material 30 is made of a non-foamed material or a foam with a lower foaming ratio than the base material 20, and therefore has higher strength than the base material 20. Consequently, wear of the ramp material 10 is suppressed compared to a ramp material in which the entire ramp material is made of a foam with the same foaming ratio as the base material 20.

[0028] Furthermore, when the ramp material 10 is positioned and used in contact with a step, the rear end holding portion 33 is in contact with the step and is therefore susceptible to friction. With the above configuration, the rear end holding portion 33, like the inclined portion 32, is made of a non-foamed material or a foam with a lower foaming ratio than the base material 20. Therefore, compared to a ramp material in which the entire ramp material is made of a foam with the same foaming ratio as the base material 20, wear of the ramp material 10 is suppressed.

[0029] (2) The surface material 30 has a recess 34 on its back surface 31. Here, a plate material is prepared that has a protrusion corresponding to the recess 34. With the above configuration, by engaging the recess 34 with the protrusion of the plate material, a smooth inclined surface can be formed from the upper surface of the slope material 10 to the upper surface of the plate material. This eliminates the step.

[0030] (3) The length L2 of the rear end holding portion 33 in the front-rear direction is 1 / 50 to 1 times the height L1 of the back portion 31. With the above configuration, the corners formed by the bottom surface 21 and the back surface 22 of the base material 20 can be protected more effectively, and wear of the corners can be suppressed.

[0031] (4) The surface material 30 further has a front end holding portion 37 that protrudes from the lower end of the inclined portion 32 toward the rear end and contacts the bottom surface 21 of the base material 20. With the above configuration, both ends of the bottom surface 21 of the base material 20 are surrounded by the rear end holding portion 33 and the front end holding portion 37, so that the base material 20 and the surface material 30 do not separate from each other and peel off.

[0032] (5) The front end holding portion 37 has a raised portion 38 that protrudes upward. With the above configuration, it is possible to prevent the base material 20 located on the front end side of the raised portion 38 from peeling off from the surface material 30.

[0033] <Example of changes> This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0034] The foam used in the base material 20 may consist of more than one type. If the base material 20 is composed of more than one type of foam, different foaming ratios may be used. For example, the foam at the rear end of the bottom surface 21 may have a higher foaming ratio than the foam at the front end. In this case, the base material 20 has an interface 43 formed where the front end portion 41, which is made of foam with a low foaming ratio, and the rear end portion 42, which is made of foam with a high foaming ratio, meet. The interface 43 is formed to be straight or non-straight when the slope material 10 is viewed from the extrusion direction.

[0035] The rear portion 31 does not necessarily have to have a recess 34. That is, the rear portion 31 may be configured perpendicular to the floor surface. As shown in Figure 3, the rear portion 31 may have a protrusion 35 that projects in the front-rear direction. Here, for example, a plate material having a recess corresponding to the protrusion 35 is prepared. With this configuration, by engaging the protrusion 35 with the recess of the plate material, a smooth inclined surface can be formed from the upper surface of the slope material 11 to the upper surface of the plate material. This eliminates the step difference.

[0036] The recess 34 of the slope material 10 shown in Figure 2 and the protrusion 35 of the slope material 11 shown in Figure 3 may be configured at the same height on the back surface 31 so as to interlock with each other. With this configuration, it is possible to connect the inclined portion 32 of the slope material 10 and the inclined portion 32 of the slope material 11 to form a smooth inclined surface.

[0037] The protrusion 35 does not necessarily have to protrude in the front-rear direction. For example, the protrusion 35 may protrude in a direction that intersects the front-rear direction at an angle. Also, the recess 34 may be appropriately modified according to the shape of the protrusion 35.

[0038] The inclined portion 32 does not necessarily have to have a slit 36. The inclined portion 32 may have a protrusion instead of a slit 36, for example. The slits 36 may be configured at an angle to the front-to-back direction. Multiple slits 36 may intersect each other.

[0039] The outer covering material 30 does not necessarily have to have a front end holding portion 37. The front end gripping portion 37 does not necessarily have to have a raised portion 38 that protrudes upward. That is, the thickness of the front end gripping portion 37 may be constant in the front-rear direction, or it may become thinner towards the tip.

[0040] As shown in Figure 4, the surface material 30 may be configured to cover all surfaces of the base material 20, including the bottom surface 21, the back surface 22, and the inclined surface 23. This suppresses wear on all surfaces of the slope material.

[0041] Next, the technical concepts that can be understood from the above embodiments and modified examples are described below. A slope material is constructed by extrusion integral molding such that a surface material made of non-foamed synthetic resin or foam with a lower foaming ratio than the base material is attached to the surface of a base material made of foamed synthetic resin, wherein the base material has a bottom surface, a back surface rising upward from the rear end of the bottom surface, and an inclined surface connecting the upper end of the back surface and the front end of the bottom surface, and the surface material has a back portion that covers the back surface of the base material, an inclined portion that covers the inclined surface of the base material, and a bottom portion that covers the bottom surface of the base material. With this configuration, the entire surface of the slope material is covered with a surface material made of non-foamed material. Therefore, wear can be suppressed on the entire surface of the slope material. [Explanation of Symbols]

[0042] 10, 11...Slope material, 20...Base material, 21...Bottom surface, 22...Back surface, 23...Inclined surface, 30...Surface material, 31...Back part, 32...Inclined part, 33...Rear end holding part, 34...Recess, 35...Convex part, 37...Front end holding part, 38...Raised part.

Claims

1. A slope material constructed by extrusion integral molding such that a surface material made of a non-foamed synthetic resin or a foam with a lower foaming ratio than the base material is attached to the surface of a base material made of a foamed synthetic resin, The substrate has a bottom surface, a back surface rising upward from the rear end of the bottom surface, and an inclined surface connecting the upper end of the back surface and the front end of the bottom surface. The surface material is a slope material having a back portion that covers the back surface of the base material, an inclined portion that covers the inclined surface of the base material, and a rear end holding portion that protrudes from the lower end of the back portion toward the front end and contacts the bottom surface of the base material.

2. The slope material according to claim 1, wherein the surface material has a convex or concave portion on its back surface.

3. The ramp material according to claim 1, wherein the length of the rear end holding portion in the front-rear direction is 1 / 50 to 1 times the height of the rear portion.

4. The surface material further has a front end holding portion that protrudes from the lower end of the inclined portion toward the rear end and contacts the bottom surface of the base material, The slope material according to any one of claims 1 to 3, wherein the front end holding portion has a raised portion that protrudes upward.

5. The substrate has a front end portion and a rear end portion, The aforementioned front end portion and the aforementioned rear end portion are in contact with each other. The slope material according to claim 1, wherein the base material has an interface surface where the front end side and the rear end side are in contact.

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