An undercarriage protection device

Abstract

The application provides an automobile chassis protection device, which comprises a bottom plate, an upper cover plate arranged above the bottom plate, a plurality of convex strips fixedly connected to the upper end of the bottom plate, a plurality of welding holes arranged on the upper cover plate, a protrusion at the upper end of the convex strip matched in the welding hole, and a detection belt fixedly attached to the upper end surface of the bottom plate. The detection belt comprises a bottom film, a sensitive grid arranged on the upper surface of the bottom film, and a wire electrically connected to the sensitive grid at equal intervals. The application is provided with a double-layer structure of the guard plate, improves the structural strength, and thus improves the protection ability. Meanwhile, the detection belt is arranged to determine whether the guard plate is bent and deformed.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to an automotive chassis protection device. Background Technology

[0002] Car chassis skid plates are critical protective devices installed on the vehicle chassis. They are mainly divided into two categories: engine skid plates and chassis armor plates, which differ in function, material, and applicable scenarios. The main functions of the skid plates are: to provide partial protection for the engine oil pan, to prevent mechanical damage caused by gravel or bottoming out, to optimize airflow under the chassis, to reduce wind resistance and noise, and to improve high-speed stability.

[0003] However, existing automotive underbody protection plates, whether made of metal or plastic, are primarily single-layered structures with raised and recessed stripes to enhance structural strength. Relatively speaking, this structure is quite simple and offers limited protection. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses an automotive chassis protection device, comprising a base plate, an upper cover plate disposed on top of the base plate, a plurality of protruding strips fixedly connected to the upper end of the base plate, and a plurality of welding holes provided on the upper cover plate, with pre-set protrusions at the upper ends of the protruding strips fitting into the welding holes. The base plate and upper cover plate are double-layered, and protruding strips are provided between them, thereby improving the overall structural strength of the protective plate.

[0005] A detection strip is adhered and fixed to the upper surface of the base plate. The detection strip includes a base film, and a sensitive grid is disposed on the upper surface of the base film. Wires are electrically connected to the sensitive grid at equal intervals. The sensitive grid is a metal resistive element. When the sensitive grid deforms, its resistance value changes. When the protective plate deforms, the resistance value of the sensitive grid changes. The arrangement of multiple wires allows the resistance value between two wires to be obtained, thereby determining the location of the bending of the protective plate.

[0006] Preferably, the two sides of the base plate are bent to form a first folded edge, and a plurality of mounting holes are provided on the first folded edge. Bolts and other components are inserted through the mounting holes to fix the guard plate to the chassis of the vehicle.

[0007] Preferably, a sponge ring is fixedly connected to the upper edge of the cover plate. After the protective plate is installed, the sponge ring contacts the chassis, preventing stones and foreign objects from entering the upper part of the protective plate.

[0008] Preferably, the upper cover plate is provided with a wiring hole, and a plug is fastened to the wiring hole, with a through hole in the middle of the plug. That is, the cable connecting the detection belt passes through the through hole of the plug.

[0009] Preferably, the front and rear edges of the upper cover plate are bent to form a second folded edge. The first and second folded edges enhance the aesthetics of the cover plate.

[0010] Preferably, the upper surface of the bottom membrane is covered with a cover film, and the sensitive grid and the wire are located between the cover film and the bottom membrane. An adhesive layer is provided on the lower surface of the bottom membrane. The adhesive layer facilitates the adhesion of the detection strip to the upper surface of the base plate.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. It is equipped with a base plate and a top cover plate, and a raised strip is provided between the two, which greatly improves the structural strength of the protective plate and thus improves its protective ability.

[0013] 2. A detection strip is installed on the base plate. The change in the resistance value of the sensitive grid on it can be used to determine whether the protective plate is bent and whether it needs to be replaced. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a partial schematic diagram of the detection band of the present invention.

[0017] List of reference numerals in the attached diagram:

[0018] 1. Base plate; 2. Top cover plate; 3. Sponge ring; 4. Detection strip; 5. Sealing;

[0019] 11. First fold; 12. Mounting hole; 13. Raised strip; 21. Welding hole; 22. Wiring hole; 23. Second fold; 41. Coating; 42. Wire; 43. Sensitive grid; 44. Adhesive layer; 45. Base film. Detailed Implementation

[0020] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figures 1 to 3As shown, a car chassis protection device includes a base plate 1, which is located on a plate. A top cover plate 2 is provided on top of the base plate 1. Similarly, the top cover plate 2 is also a plate. Several protruding strips 13 are fixedly connected to the upper end of the base plate 1. Several welding holes 21 are provided on the top cover plate 2. The protrusions at the upper ends of the protruding strips 13 are pre-set to fit into the welding holes 21. After the base plate 1 and the top cover plate 2 are covered together, they are fixed by welding. The specific positions are at the edge between the base plate 1 and the top cover plate 2, and at the welding holes 21. The double-layer setting and the provision of protruding strips 13 can greatly improve the structural strength of the protective plate, that is, provide protection.

[0022] A detection strip 4 is adhered and fixed to the upper surface of the base plate 1. The detection strip 4 is used to detect whether the protective plate has been bent due to impact. The detection strip 4 includes a base film 45, and a sensitive grid 43 is provided on the upper surface of the base film 45. The sensitive grid 43 is a metal resistive sheet. When the sensitive grid 43 is deformed, its resistance value changes. Whether the resistance value remains unchanged determines whether the protective plate has been deformed. Wires 42 are electrically connected to the sensitive grid 43 at equal intervals. The equally spaced wires 42 divide the sensitive grid 43 into multiple segments. If the resistance value changes at one segment, the location of the bending of the protective plate can be further determined. In addition, if the change in resistance value is too large, it can be used to indicate whether the protective plate needs to be replaced.

[0023] The two sides of the base plate 1 are bent to form the first folded edge 11. The first folded edge 11 is obtained by two arc bends. The arc bend can improve the aesthetics of the edge of the guard plate. Several mounting holes 12 are provided on the first folded edge 11. Bolts and other connecting parts are inserted into the mounting holes 12 to fix the guard plate to the chassis.

[0024] A sponge ring 3 is fixedly connected to the upper edge of the cover plate 2. After the protective plate is installed, the sponge ring 3 is in close contact with the chassis to prevent foreign objects from entering between the base plate and the protective plate.

[0025] The upper cover plate 2 is provided with a cable routing hole 22, which is used to send the cable between the base plate 1 and the upper cover plate 2 for electrical connection with the detection belt 4. A plug 5 is fastened on the cable routing hole 22 to prevent foreign objects from entering between the base plate 1 and the upper cover plate 2. A through hole is provided in the middle of the plug 5, and the cable passes through the through hole.

[0026] The front and rear edges of the top cover plate 2 are bent to form a second folded edge 23. Similarly, the second folded edge 23 is also curved, and its edge is attached to the upper surface of the bottom plate 1 through a single bend. Overall, the first folded edge 11 and the second folded edge 23 greatly improve the aesthetics of the protective plate.

[0027] The upper surface of the bottom membrane 45 is covered with a covering membrane 41, and the sensitive grid 43 and the wire 42 are located between the covering membrane 41 and the bottom membrane 45. That is, the covering membrane 41 and the bottom membrane 45 wrap the sensitive grid 43. The lower surface of the bottom membrane 45 is provided with an adhesive layer 44. The adhesive layer 44 facilitates fixing the detection band 4 to the upper end of the base plate 1.

[0028] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A vehicle chassis protection device, characterized in that, Includes a base plate (1), and an upper cover plate (2) is provided above the base plate (1). Several protrusions (13) are fixedly connected to the upper end of the base plate (1). Several welding holes (21) are provided on the upper cover plate (2). The protrusions at the upper ends of the protrusions (13) are fitted into the welding holes (21). The upper end face of the base plate (1) is attached to a detection strip (4), the detection strip (4) includes a base film (45), the upper surface of the base film (45) is provided with a sensitive grid (43), and the sensitive grid (43) is electrically connected with wires (42) at equal intervals.

2. The automobile chassis protection device according to claim 1, characterized in that: The base plate (1) is bent on both sides to form a first folded edge (11), and a plurality of mounting holes (12) are provided on the first folded edge (11).

3. The automobile chassis protection device according to claim 1, characterized in that: A sponge ring (3) is fixedly connected to the upper edge of the upper cover plate (2).

4. The automobile chassis protection device according to claim 1, characterized in that: The upper cover plate (2) is provided with a wiring hole (22), and a plug (5) is fastened to the wiring hole (22), and a through hole is provided in the middle of the plug (5).

5. The automobile chassis protection device according to claim 1, characterized in that: The front and rear edges of the upper cover plate (2) are bent to form a second fold (23).

6. The automobile chassis protection device according to claim 1, characterized in that: The upper surface of the bottom film (45) is covered with a film (41), and the sensitive grid (43) and the wire (42) are located between the film (41) and the bottom film (45). The lower surface of the bottom film (45) is provided with an adhesive layer (44).

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