JPH0449006Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (industrial field of application) This invention is used in the synthetic resin molding industry and is a highly weather-resistant core material that is attached to the edge of steps in vehicles such as buses. Pertains to curved step edge materials.

(Prior Art) Conventionally, the step edge material attached to the edge of the step of a bus entrance or staircase of a building, etc. in a vehicle is a long material made of rubber or plastic and formed into a plate shape or an L-shaped cross section. cut into specified dimensions, or extruded or press-formed elongated material such as aluminum alloy, etc., cut into specified sizes.
In use, they are coated with adhesive and attached to the edge of the step, or fixed with screws.

(Problem to be solved by the invention) However, when the conventional step edge material is made of rubber or plastic, it does not have a core material inside, so it can be used as it is for steps such as bus entrances and stairs. When attached to the step edge, it is either glued or screwed, so the attached step edge material can break or fall off in a short period of time due to shocks when getting on and off the bus, vibrations from the bus, and other types of shock, and the step may no longer function as a step. If the step is made of metal such as aluminum alloy, it may be bent to match the shape of the edge of the step, and the mounting surface may be bent to fit the edge of the doorway or staircase. Therefore, the step edge material cannot be manufactured at a low cost because it is very time-consuming to perform accurate bending.

The object of the present invention is to provide a curved step edge material with a core material, which is made to solve the above-mentioned conventional problems.

B. Structure of the invention (means for solving problems) In order to achieve the above object, the curved step edge material with a core material of the present invention is made of a bent metal core having a plurality of notches expanded by bending. a synthetic resin outer skin portion provided to cover the bent metal core material, and the plurality of cuts are provided in a direction that crosses the bent metal core material; are arranged side by side.

(Function) When the curved step edge material with a core material according to the present invention is attached to the step edge 8 of a boarding/exit entrance of a bus, for example, the fastening piece 3 of the step edge material A formed by bending After drilling holes 6 for the set screws 7 in advance at multiple intervals, this step edge material A is
After applying it to the step edge 8 and letting it fit in, it is fixed to the step edge 8 by passing the set screw 7 through the hole 6 of the fixing piece 3. The above method is also used when fixing to the step edge of a staircase, etc. It also stops.

In addition, adhesive may be used as necessary in areas where screws cannot be used for fastening.

(Example) Next, a curved step edge material with a core material according to the present invention will be explained based on FIGS. 1 to 5 of the drawings.

In the figure, 1 is a bent metal core material that has a plurality of cuts 2 expanded by bending.
The notches are provided in a direction that crosses the bent metal core material 1, and the notches are arranged in parallel. The bent metal core material 1 is a long shape material made of aluminum alloy formed into an L-shaped cross section, and a plurality of cuts 2 are made at 15 cm intervals in the fastening pieces 3 of this shape material before bending. .

Reference numeral 4 denotes a synthetic resin outer skin part which is placed on the bent metal core material 1 and blends in with it. When laminated by hot pressure, the bent metal core material 1 is coated with a resin adhesive such as phenol-modified acrylic adhesive on the surface in advance. Metal core material 1
are laminated in such a way that they are sandwiched between synthetic resin plates mainly made of vinyl chloride, and these are bonded under hot pressure using a hot press or the like, and then bent using a resin adhesive to form a metal core material 1.
The synthetic resin plate is integrally bonded to the synthetic resin plate, or when extrusion molding is used, the bent metal core material 1 is coated with a phenol-modified acrylic adhesive in advance, and then the bent metal core 1 is coated with vinyl chloride, stabilizers, plasticizers, and fillers. The resin melting temperature is 185 by mixing the agent and additive materials in a specified manner.
The synthetic resin part of the exterior is extruded and molded using an extrusion molding machine along with the resin raw material heated to ℃.Synthetic resin materials in various colors are used.

Reference numeral A denotes an arcuate curved step edge material made of the bent metal core 1 and synthetic resin outer skin 4, and the step edge material is laminated or extruded to facilitate bending by boiler steam. , soften the outer skin part 4 with moist air (temperature 80°C to 90°C), apply it to the wooden mold 5, bend it along the wooden mold 5 so as to widen the cut side of the cut 2, and bend it to a predetermined shape. After being bent, the outer skin part 4 is cooled with cold water to harden the softened outer skin part 4 and maintain the bent state.

In order to obtain a curved step edge material A having a large curvature, the interval between adjacent cuts 2 in the bent metal core material 1 is narrowed to provide a large number of cuts 2.

Reference numeral 6 denotes a through hole for a set screw 7 drilled in the fixing piece 3 of the formed curved step edge material A, which matches the through hole drilled in the step edge 8 at the boarding/exit of a bus, etc. .

In some cases, the bent metal core material 1 has an I-shaped cross section, as shown in FIG. 3, to obtain a plate-shaped bent step edge material.

As described above, when using the curved step edge material with a core material according to this embodiment, after applying it as it is to the curved step edge 8 at the boarding/exit of a bus, etc.,
It is integrally fixed to the step edge 8 with a set screw 7.

Also, when it is attached to the step edge of a staircase or the like in a building, it is attached in the same way as the step edge of a bus.

C. Effect of the invention The curved step edge material with a core material of the present invention consists of a bent metal core material having a plurality of notches expanded by bending, and a synthetic resin provided to cover the bent metal core material. The flexible outer skin part and the plurality of cuts are provided in a direction that crosses the bent metal core material, and the cuts are arranged in parallel, so that this can be used, for example, as a boarding entrance for a bus. When installing on the edge of a step such as a staircase in a building, the step edge material has a core material inside, so it will not be easily damaged or fall off, and a strong installation can be achieved. The bending process can be easily formed using a wooden mold or the like by making cuts in the bent metal core material, so it is easy to obtain a bending step edge material with an accurate and reliable curvature, and it does not require special and expensive bending equipment. Since there is no need for this, it can be produced in small quantities and has the unique effect of being able to be manufactured at low cost.

[Brief explanation of drawings]

Figure 1 is a partially cross-sectional plan view showing an embodiment of the curved step edge material with a core material according to the present invention, Figure 2 is a vertical sectional side view, and Figure 3 is a plan view of the step edge material of the present invention. FIG. 4 is an explanatory diagram showing the formation of the bending process, and FIG. 5 is a longitudinal side view of the state of use. In the figure, 1 is a bent metal core material, and 2 is a notch 4, which is an outer skin part.

Claims (1)

[Scope of utility model registration request] a bent metal core material having a plurality of notches expanded by bending; a synthetic resin outer skin portion provided to cover the bent metal core material; A curved step edge material containing a core material, characterized in that the notches are provided in a direction transverse to the core material and are arranged in parallel.