阅读说明：本技术 一种板弹簧复合盖板 (Plate spring composite cover plate ) 是由 周文涛 李春 严则进 柴浩 何朝东 于 2019-08-22 设计创作，主要内容包括：本发明公开了一种板弹簧复合盖板,包括骨架,骨架上端面与U型螺栓内弯曲段契合,骨架设于纤维增强高分子材料制成的基体中,骨架为金属材质,骨架下端面与基体下端面齐平,骨架上端面露出于基体表面。骨架上表面与U型螺栓内弯曲段吻合,传递来自U型螺栓的垂向静/动载荷,骨架上表面所受载荷在盖板内部由骨架和基体共同承担,骨架采用金属材料可以保证结构强度和刚度高,基体采用纤维增强高分子材料,弹性模量小,比强度高,起到缓冲和分散载荷效果明显。并且高分子材料重量轻,复合盖板整体相较于传统的铸铁材质板簧盖板的减重率≥50%,可实现轻量化设计。(The invention discloses a leaf spring composite cover plate which comprises a framework, wherein the upper end surface of the framework is matched with an inner bending section of a U-shaped bolt, the framework is arranged in a matrix made of a fiber reinforced polymer material, the framework is made of a metal material, the lower end surface of the framework is flush with the lower end surface of the matrix, and the upper end surface of the framework is exposed out of the surface of the matrix. The upper surface of the framework is matched with the inner bending section of the U-shaped bolt, vertical static/dynamic load from the U-shaped bolt is transferred, the load borne by the upper surface of the framework is jointly born by the framework and the base body in the cover plate, the framework is made of metal materials and can ensure high structural strength and rigidity, the base body is made of fiber reinforced polymer materials, the elastic modulus is small, the specific strength is high, and the effects of buffering and dispersing load are obvious. And the high polymer material is light in weight, the weight reduction rate of the whole composite cover plate is more than or equal to 50% compared with that of the traditional cast iron plate spring cover plate, and the lightweight design can be realized.)

1. The utility model provides a compound apron of leaf spring which characterized in that: the framework is arranged in a base body made of fiber reinforced polymer materials, the framework is made of metal materials, the lower end face of the framework is flush with the lower end face of the base body, and the upper end face of the framework is exposed out of the surface of the base body.

2. The leaf spring composite cover plate of claim 1, wherein: in the fiber-reinforced polymer material adopted by the matrix, the fiber material is glass fiber, carbon fiber, aramid fiber or natural fiber, and the resin material is nylon, polypropylene, polyurethane or epoxy resin.

3. The leaf spring composite cover plate of claim 1, wherein: the framework is made of pure metal or alloy of any one of steel, iron, aluminum, magnesium, copper and titanium.

4. The leaf spring composite cover plate of claim 1, wherein: the skeleton is equipped with two altogether, and two skeletons are located in same base member.

5. The leaf spring composite cover plate of claim 4, wherein: the two frameworks are connected into a whole through the reinforcing rib.

6. The leaf spring composite cover plate of claim 4, wherein: the two frameworks are independent metal pieces.

7. The leaf spring composite cover plate of claim 1, wherein: the framework is a discretization three-dimensional network structural member and is provided with two upper end faces matched with the bent sections in the U-shaped bolts.

8. The leaf spring composite cover plate of claim 1, wherein: the side of the framework is provided with a connecting part, the connecting part comprises a convex structure and/or a concave structure, and the base body is tightly attached to the side of the framework and the connecting part.

9. The leaf spring composite cover plate of claim 1, wherein: the framework is embedded in the substrate as an insert through a high polymer material molding process.

10. The leaf spring composite cover plate of claim 1, wherein: the base member is equipped with the buffer block mounting hole, and the buffer block is installed in the mounting hole, and the lower extreme flushes with base member lower extreme face, and the upper end exposes in the base member.

Technical Field

The invention belongs to the technical field of passenger cars, and particularly relates to a plate spring cover plate.

Background

The plate spring suspension system has the characteristics of mature and reliable structure and convenience for mass production and manufacture, and the plate spring cover plate is an important component of the plate spring suspension system and bears vertical load and impact.

The existing plate spring cover plate is generally an iron casting or a sheet metal part, and the plate spring and a fastening bolt are damaged in the using process; moreover, the cast iron plate spring cover plate has heavy weight and is not suitable for the development requirement of light weight of the current automobile.

Disclosure of Invention

The invention aims to provide a light-weight plate spring cover plate.

In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a compound apron of leaf spring, includes the skeleton, and the skeleton up end agrees with U type bolt inflexion section, and during the base member that fibre reinforced polymer material made was located to the skeleton, the skeleton was the metal material, and the terminal surface flushes with base member lower terminal surface under the skeleton, and the skeleton up end exposes in the base member surface.

Furthermore, in the fiber reinforced polymer material adopted by the matrix, the fiber material is glass fiber, carbon fiber, aramid fiber or natural fiber, and the resin material is nylon, polypropylene, polyurethane or epoxy resin.

Further, the material of the framework is any one of pure metal or alloy of steel, iron, aluminum, magnesium, copper and titanium.

Furthermore, the number of the frameworks is two, and the two frameworks are arranged in the same base body.

Furthermore, the two frameworks are connected into a whole through the reinforcing ribs.

Further, the two frameworks are independent metal pieces.

Furthermore, the framework is a discretization three-dimensional network structural member and is provided with two upper end faces matched with the bent sections in the U-shaped bolts.

Further, the side of the framework is provided with a connecting part which comprises a convex structure and/or a concave structure, and the base body is tightly attached to the side of the framework and the connecting part.

Furthermore, the framework is embedded in the substrate as an insert through a high polymer material molding process.

Furthermore, the base member is equipped with the buffer block mounting hole, and the buffer block is installed in the mounting hole, and the lower extreme flushes with base member lower terminal surface, and the upper end exposes in the base member.

The invention has the advantages that:

1. the upper surface of the framework is matched with the inner bending section of the U-shaped bolt, vertical static/dynamic load from the U-shaped bolt is transferred, the load borne by the upper surface of the framework is jointly born by the framework and the base body in the cover plate, the framework is made of metal materials and can ensure high structural strength and rigidity, the base body is made of fiber reinforced polymer materials, the elastic modulus is small, the specific strength is high, and the effects of buffering and dispersing load are obvious. And the high polymer material is light in weight, the weight reduction rate of the whole composite cover plate is more than or equal to 50% compared with that of the traditional cast iron plate spring cover plate, and the lightweight design can be realized.

2. The existing metal cover plate is usually coated with paint for rust prevention, and after the composite cover plate is used, because the fiber reinforced high polymer material has the performance advantage of resisting chemical media such as acid, alkali and salt, coating is avoided, colors can be customized, the cost of a paint spraying process is eliminated, and the atmospheric pollution hazard is brought.

3. The manufacturing process avoids the traditional large-scale and high-energy-consumption cast-hot forge welding forming, only the framework adopts a metal processing method, the core process is the forming of high polymer materials, the batch production cost is low, the energy consumption is low, the pollution is small, and the environment is friendly.

4. The appearance is totally different from the existing iron casting or sheet metal part, the product discrimination is high, and the mixed use can be effectively avoided.

5. The metal cover plate has the same installation mode as the existing metal cover plate, and has interchangeability with the existing metal cover plate.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of one embodiment of the present invention;

FIG. 3 is a cross-sectional view of a frame in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of an embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the following figures and embodiments:

an embodiment of the invention is shown in fig. 1 to 4, and a leaf spring composite cover plate comprises a framework 1, wherein the upper end surface of the framework 1 is matched with an inner bending section of a U-shaped bolt 11, the framework 1 is arranged in a matrix 2 made of a fiber reinforced polymer material, the framework 1 is made of a metal material, the lower end surface of the framework 1 is flush with the lower end surface of the matrix 2, and the upper end surface of the framework 1 is exposed out of the surface of the matrix 2. The two frameworks 1 are arranged in the same base body 2, and the two frameworks 1 are independent metal pieces. Base member 2 is equipped with the buffer block mounting hole, and buffer block 3 installs in the mounting hole, and the lower extreme flushes with base member 2 lower terminal surface, and the upper end exposes in base member 2. The side of the framework 1 is provided with a connecting part which comprises a convex and/or concave structure, and the base body 2 is tightly attached to the side of the framework 1 and the connecting part.

As shown in fig. 4, in the plate spring suspension system, one end of a plate spring 5 is connected to one fixing bracket 8, the other end of the plate spring is connected to the other fixing bracket 8 through a lifting lug 9, the two fixing brackets 8 are both installed on a vehicle frame 7, the vehicle frame 7 is also provided with a buffer block bracket 6, a plate spring composite cover plate is pressed on the plate spring 5, a U-shaped bolt 11 presses the plate spring 5 from the upper part of the plate spring composite cover plate, and the lower part of the U-shaped bolt 11 is fixed through a nut and a vehicle axle 10.

The upper surface of the framework 1 is matched with the inner bending section of the U-shaped bolt 11 and transmits vertical static/dynamic load from the U-shaped bolt 11, the load borne by the upper surface of the framework 1 is jointly born by the framework 1 and the base body 2 in the composite cover plate, and the connecting part on the side surface of the framework 1 can homogenize the load to a certain degree. The lower surface of the composite cover plate is formed by the lower surface of the framework 1 and the lower surface of the base body 2 together, and is directly contacted with the plate spring 5 or the axle 10 in one plane, so that the homogenized load is transmitted to the plate spring 5 or the axle 10, or the reaction force from the plate spring 5 or the axle 10 is born.

The buffer block 3 is made of rubber or other elastic materials and is matched with the buffer block bracket 6 to play a role in buffering.

The connection portion of the side of the frame 1 can increase the contact area with the substrate 2, thereby increasing the bonding force with the substrate 2, and making the frame 1 more smoothly transmit and homogenize the load to the substrate 2.

In the fiber-reinforced polymer material adopted by the matrix 2, the fiber material can be glass fiber, carbon fiber, aramid fiber or natural fiber, and the resin material can be nylon, polypropylene, polyurethane or epoxy resin. The material of the skeleton 1 may be a pure metal or an alloy of any one of steel, iron, aluminum, magnesium, copper, and titanium. The framework 1 is embedded in the substrate as an insert through a high polymer material molding process.

In a preferred embodiment, the two frameworks 1 are connected into a whole through the reinforcing ribs, and the reinforcing ribs can not only increase the strength of the frameworks 1, but also increase the contact area between the frameworks 1 and the substrate 2, so that the bonding force between the frameworks 1 and the substrate 2 is increased, and the frameworks 1 transmit and homogenize the load more smoothly to the substrate 2.

In a preferred embodiment, the framework 1 is a discretized three-dimensional network structural member, and two upper end surfaces of the framework are matched with the bent sections in the U-shaped bolts. The discretization three-dimensional network structural part can greatly increase the contact area between the framework 1 and the substrate 2, the binding force between the framework 1 and the substrate 2 is stronger, and the load is transferred and homogenized from the framework 1 to the substrate 2 more smoothly.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.