A TRUNK FLOOR FOR A MOTOR VEHICLE

Abstract

A trunk floor for a motor vehicle having a rigid carrier and a wear-resistant soft elastic protective layer. The rigid carrier is completely or partially protected by a wear-resistant soft elastic layer on its visible surface or side, and is wrapped by its shape. The structure can be used for a load floor or a parcel shelf or a rear seat back plate of a motor vehicle. The wear-resistant soft elastic protective layer is completely or partially covered on the visible surface or side of the rigid carrier, which effectively improves its wear resistance, tensile strength and elongation at break corresponding to the properties required from TPO in the commercial vehicle field, and has a certain acoustic effect at the same time.

Claims

1. A trunk floor for a motor vehicle consisting of a rigid carrier and a wear-resistant soft elastic protective layer, wherein the rigid carrier is completely or partially protected by a wear-resistant soft elastic layer on its visible side or side and is wrapped by its shape.

2. The trunk floor for a motor vehicle according to claim 1, wherein the rigid carrier is composed of honeycomb paper core, glass fiber and rigid polyurethane foam.

3. The trunk floor for a motor vehicle according to claim 1, wherein the rigid carrier is composed of honeycomb aluminum core, glass fiber and rigid polyurethane foam.

4. The trunk floor for a motor vehicle according to claim 1, wherein the rigid carrier is composed of honeycomb paper core, glass fiber, Carbon fiber or Kevlar fiber and rigid polyurethane foam.

5. The trunk floor for a motor vehicle according to claim 1, wherein the rigid carrier is composed of honeycomb paper core, natural fiber and rigid polyurethane foam.

6. The trunk floor for a motor vehicle according to claim 1, wherein the rigid carrier is composed of honeycomb aluminum core, glass fiber, Carbon fiber or Kevlar fiber and rigid polyurethane foam.

7. The trunk floor for a motor vehicle according to claim 1, wherein the wear-resistant soft elastic protective layer is unfilled rigid polyurethane foam material.

8. The trunk floor for a motor vehicle according to claim 1, wherein the building material of the wear-resistant soft elastic protective layer is rigid polyurethane foam material filled with inorganic particles.

9. The trunk floor for a motor vehicle according to claim 1, wherein the wear-resistant soft elastic protective layer has a defined design.

Description

DRAWING DESCRIPTION

[0018] FIG. 1 is a structure schematic view of Embodiment 1;

[0019] FIG. 2 is a cross-sectional view of the B-B side of FIG. 1;

[0020] FIG. 3 is a structure schematic view of Embodiment 2;

[0021] FIG. 4 is a cross-sectional view of the B-B side of FIG. 3:

[0022] FIG. 5 is a structure schematic view of rigid carrier.

[0023] Among them: 1, trunk bottom plate, 2, wear-resistant soft elastic protective layer, 3, rigid carrier, 4, honeycomb paper core, 5, fiberglass mat, 6, rigid polyurethane foam layer, 8, carpet.

DETAILED MODE OF EXECUTION

[0024] The invention will now be further described with reference to the drawings and embodiments.

[0025] A trunk floor for a motor vehicle is composed of a rigid carrier and a wear-resistant soft elastic protective layer on the visible side and the side, the rigid carrier is bonded by a wear-resistant soft elastic protective layer completely or partially on its visible side and side, and is wrapped by its shape. Slightly difference is that the visible surface of the rotatable component can also be particularly made with other decorations, such as textile mat. As a rigid carrier for the related expected application, almost all rigid materials and structures can be used, whether the component is for covering or supportless. The sandwich structure of the preferred rigid carrier has a good stiffness-to-weight ratio. On the other hand, the construction material of the wear-resistant soft elastic protective layer must satisfy many conditions. Thus the selection of the construction material is relatively limited. The viscosity of the build material during the injection period must be low so that the entire part is completely closed on the visible surface and edge areas. The choice of higher viscosities, such as in thermoplastic injection molding period, it requires stronger and more expensive tools. In addition, multiple injection points are required in order to achieve a completely enclosed component coating. This can lead to surface defects. In addition, the high pressure generated may damage the sandwich component itself In the injection molding status, the plastic must have good mechanical properties such as high strength and high wear resistance. All of these properties can be achieved with a grid plastic system. The material of the rigid polyurethane foam floor mat which is made by the RIM process for free covering rather than being firmly attached to the carrier is the inevitable choice for this application. The material is solvent-free and therefore has a very low emission value, which reduces the vibration when it is fixedly connected to the rigid carrier and has a sound-absorbing effect. The building material itself is non-slip and can be further improved by appropriate surface design. In special material variants, the build material can have very soft elasticity and use the coating as a non-slip coating without the need for an extra non-slip mat. The material also has some UV resistance. If necessary, the UV resistance can be improved by additives.

[0026] In the present technical solution, the structure can also be applied to a parcel shelf or a rear seat back plate of a motor vehicle.

[0027] In the present technical solution, the defined design means that the surface of the wear-resistant soft elastic protective layer may be a smooth flat structure or a derma structure or a special surface texture or structure as required.

Embodiment 1

[0028] A car from a US company uses the load floor of the above structure.

[0029] As shown in FIGS. 1, 2 and 5, a load floor for a motor vehicle is composed of a rigid carrier 2 and a wear-resistant soft elastic protective layer 1, on the visible side and the side, the rigid carrier 2 is partially bonded by a wear-resistant soft elastic protective layer 1 and encapsulated in an outer shape. The rigid carrier 2 uses a sandwich structure consisting of a 17 mm thick honeycomb paper core 3 and a 6 mm size socket hole. Opening it, the inside was dried and covered with a glass fiber mat 4 of 450 g/m2 on both sides. The rigid polyurethane foam layer 5 is formed by spraying with about 500 g/m2 of polyurethane rigid foam (for example, using a product of BASF Corporation) and then pressing at a temperature of about 120 C. to crosslink the polyurethane. After deburring, the unfilled polyurethane is then sprayed on the back and sides by the RIM process to form a wear resistant soft elastic protective layer 1. The viscosity of the material component is about 500 mPa.Math.s in the polyol portion processing temperature, and the viscosity of the different portion is about 85 mPa.Math.s. The wear-resistant soft elastic protective layer 1 has a thickness of 0.5 to 1.5 mm, depending on the area. The materials used are scratch resistant and have good abrasion resistance. Mechanical properties such as tensile strength and elongation at break may correspond to the eigenvalues required by TPO in the commercial vehicle field.

[0030] In the present embodiment, the honeycomb paper core 3 can be replaced by a honeycomb aluminum core or polypropylene; the glass fiber mat may also be replaced by one or more of natural fibers (bamboo fibers), carbon fibers or Kevlar fibers.

Embodiment 2

[0031] A car from a US company uses the load floor of the above structure.

[0032] As shown in FIGS. 3, 4 and 5, a load floor for a motor vehicle is composed of a rigid carrier 2 and a wear-resistant soft elastic protective layer 1, on the visible side and the side, the rigid carrier 2 is partially bonded by a wear-resistant soft elastic protective layer 1 and encapsulated in an outer shape. The rigid carrier 2 uses a sandwich structure consisting of a 17 mm thick honeycomb paper core 3 and a 6 mm size socket hole. Opening it, the inside was dried and covered with a glass fiber mat 4 of 450 g/m2 on both sides. The rigid polyurethane foam layer 5 is formed by spraying with about 500 g/m2 of polyurethane rigid foam (for example, using a product of BASF Corporation) and then pressing at a temperature of about 120 C. to crosslink the polyurethane. After deburring, the unfilled polyurethane is then sprayed on the back and sides by the RIM process to form a wear resistant soft elastic protective layer 1. The viscosity of the material component is about 500 mPa.Math.s in the polyol portion processing temperature, and the viscosity of the different portion is about 85 mPa.Math.s. The wear-resistant soft elastic protective layer 1 has a thickness of 0.5 to 1.5 mm, depending on the area. The materials used are scratch resistant and have good abrasion resistance. Mechanical properties such as tensile strength and elongation at break may correspond to the eigenvalues required by TPO in the commercial vehicle field.

[0033] A fabric mat is then attached to the visible surface and a handle is mounted.

[0034] In the present embodiment, the honeycomb paper core 3 can be replaced by a honeycomb aluminum core or polypropylene; the glass fiber mat may also be replaced by one or more of natural fibers (bamboo fibers), carbon fibers or Kevlar fibers.

[0035] The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and for technicians in this field, various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the protective scope of the present invention.