Hinge for front cabin cover of automobile

Abstract

Hinge supports are arranged at the two ends of the top of a cabin rear wall in the vehicle width direction or arranged on a vehicle body at the rear end of a cabin side wall, the rear ends of hinge swing arms are connected to the hinge supports through hinge shafts, and shaft cores of the hinge shafts are located in the horizontal direction of the vehicle width direction. The hinge support and the vehicle body are arranged at an interval, and an elastic support is arranged in an up-down interval area between the hinge support and the vehicle body. When the head of a pedestrian collides with the front hatch cover connected with the hinge swing arm, the elastic support is stressed and compressed, the energy absorption and buffering effects can be achieved, the front hatch cover is elastically pressed downwards along with the hinge support, the head of the pedestrian and the front hatch cover move downwards together to be buffered, and damage of collision impact force to the head of the pedestrian is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a front hood of an automobile, in particular to a hinge for a front hood of an automobile. Background Art

[0002] With the research on pedestrian protection in vehicle collision safety, when a pedestrian collides with the front of a vehicle head-on, the pedestrian's head will hit the middle and rear parts of the engine hood, causing harm to the pedestrian's head. As Figure 1 shown, in the prior art, the front hood 4 of an automobile is connected to the vehicle body 3 through a hinge (only a partial area of the vehicle body 3 is shown in the figure), wherein the hinge support 1 is fixed on the vehicle body 3, and the middle and rear parts of the front hood 4 of the automobile are connected to the hinge swing arm 2 on the hinge support 1.

[0003] In the prior art, the front hood hinge is rigidly connected to the vehicle body and the front hood. When the front hood is in the closed state, the front hood maintains a stable and immovable posture above the front engine compartment, which makes the front hood area form a rigid structure, especially the middle and rear parts of the front hood. When a pedestrian's head hits this area, the impact force is often large. How to reduce the harm to the pedestrian's head in the front hood area is an important technical difficulty in the development of pedestrian protection safety performance. Summary of the Invention

[0004] The utility model provides a hinge for a front hood of an automobile, which enables the front hood to float elastically and reduces the collision harm to the pedestrian's head.

[0005] In order to achieve the above purpose, the technical scheme adopted is: a hinge for a front hood of an automobile, the hinge support is arranged at both ends of the top of the rear enclosure of the engine compartment in the vehicle width direction or on the vehicle body at the rear end of the side enclosure of the engine compartment, the rear end of the hinge swing arm is connected to the hinge support by a hinge shaft, the axis core of the hinge shaft is in the horizontal direction of the vehicle width direction, the hinge support and the vehicle body are spaced apart, and an elastic support is arranged in the upper and lower spacing area between the two.

[0006] Compared with the prior art, the technical effect of the utility model is: the hinge support and the vehicle body are spaced apart, and an elastic support is arranged in the upper and lower spacing area between the two. When a pedestrian's head hits the front hood connected to the hinge swing arm, the elastic support is compressed by the force, which can play a role in energy absorption and buffering. The front hood is elastically pressed down with the hinge support, so that the pedestrian's head and the front hood move down together for buffering, effectively reducing the harm of the collision impact force to the pedestrian's head. Description of the Drawings

[0007] Figure 1 Schematic diagram of hinge arrangement in the prior art;

[0008] Figure 2 Stereo appearance schematic diagram of the utility model;

[0009] Figure 3 View in the K direction in Figure 2 ;

[0010] Figure 4 Schematic diagram of the separated state of the hinge support, the lower vertical plate, and the vehicle body;

[0011] Figure 5 Schematic diagram of the compression spring arrangement. Specific implementation mode

[0012] The following combines the attached Figures 1-5 drawings and related content to further elaborate on the present utility model in detail:

[0013] A hinge for a vehicle front hood, the hinge support 10 is arranged at both ends of the vehicle body A in the vehicle width direction at the top of the rear enclosure of the engine compartment or at the rear end of the side enclosure of the engine compartment, the rear end of the hinge swing arm 20 is connected to the hinge support 10 by a hinge shaft 30, the axis core of the hinge shaft 30 is in the horizontal direction of the vehicle width direction, the hinge support 10 is arranged at a distance from the vehicle body A and an elastic support is provided in the upper and lower distance area between the two.

[0014] In the above solution, the vehicle front hood is fixedly connected to the front end of the hinge swing arm 20, the hinge support 10 is arranged at a distance from the vehicle body A and an elastic support is provided in the upper and lower distance area between the two. When a pedestrian's upper body, especially the head, hits the front hood, the main impact part is the rear part of the front hood. The elastic support is compressed under force, which can play a role in energy absorption and buffering. The front hood moves downward elastically with the hinge support 10, so that the pedestrian's head and the front hood are pressed down together for buffering, effectively reducing the harm of the collision impact force to the pedestrian's head. After the collision, the hinge support 10 can rise back to the initial position under the elastic force of the elastic support, and the hinge can still be used continuously later, reducing the maintenance parts.

[0015] As a preferred solution, the elastic support is a compression spring 40. The lower end of the compression spring 40 is pressed against the vehicle body A, the upper end of the compression spring 40 supports on the support plate 11 of the hinge support 10, and the support plate 11 with a flat plate surface is arranged at a distance from the vehicle body A. By using the compression spring 40 to support the support plate 11 of the hinge support 10, when a pedestrian's head hits the front hood, the front hood drives the hinge support 10 to move downward together for buffering, and the compression spring 40 is adaptively compressed to elastically buffer the impact force.

[0016] As a preferred solution, in order to improve the connection stability between the hinge support 10 and the vehicle body A, the hinge support 10 includes a support plate 11. The inner plate edge of the support plate 11 has a downwardly extending lower vertical plate 111, and the lower vertical plate 111 is welded to the vertical plate surface of the vehicle body A, avoiding the problem that the overall hinge has poor stability relative to the vehicle body A due to only elastic support between the hinge support 10 and the vehicle body A. When a pedestrian's head hits the front hood, the plate body formed by the connection between the lower vertical plate 111 and the support plate 11 can undergo elastic deformation, and the hinge support 10 can move downward, thus not affecting the buffering of the impact force.

[0017] It should be noted that the lower vertical plate 111 is arranged at the inner plate edge of the support plate 11, not the outer side, nor the front or rear side. This enables the downward displacement degrees of the front and rear ends of the hinge support 10 to tend to be consistent when the front hood is hit by a pedestrian's head, and the entire hinge support 10 moves downward or rebounds synchronously, improving the buffering performance of the front hood.

[0018] Combined with Figure 2 、 3 As shown in FIG. 4, the outer plate edge of the support plate 11 has an upwardly extending support plate 112. The support plate 112 is vertically arranged and its plate surface is perpendicular to the vehicle width direction. The rear end of the hinge swing arm 20 is connected to the support plate 112 by a hinge shaft 30. The support plate 112 serves as the connection part between the hinge swing arm 20 and the hinge support 10 to connect the hinge swing arm 20 and the hinge support 10.

[0019] As a preferred solution, as shown in Figure 4 FIG., the upper plate edge of the lower vertical plate 111 has a connecting plate 1111 that extends along the side where the support plate 11 is located, and the connecting plate 1111 is connected to the support plate 11. In this solution, the lower vertical plate 111 and the connecting plate 1111 are integrally formed, forming a split structure with the hinge support 10 and being respectively press-molded. The single structure is simple, more convenient to manufacture, and also convenient for targeted maintenance and repair in the later stage.

[0020] Furthermore, as shown in Figure 3 、 4 FIG., in order to conveniently connect the upper and lower ends of the compression spring 40 to the support plate 11 and the vehicle body A respectively and improve the stable supporting force, both the upper and lower ends of the compression spring 40 are connected with a flat-placed abutment plate 41. The two abutment plates 41 located above and below are respectively connected to the support plate 11 and the vehicle body A.

Claims

1. A front hood hinge for an automobile, wherein a hinge support (10) is arranged at both ends of the top of the rear enclosure of the engine compartment in the vehicle width direction or arranged on the vehicle body (A) at the rear end of the side enclosure of the engine compartment, and the rear end of the hinge swing arm (20) is connected to the hinge support (10) by a hinge shaft (30), and the axis core of the hinge shaft (30) is located in the horizontal direction of the vehicle width direction, characterized in that: The hinge support (10) and the vehicle body (A) are arranged at a distance, and elastic supports are provided in the upper and lower distance regions between the two.

2. The automobile front hood hinge according to claim 1, characterized in that: The elastic support is a compression spring (40), the lower end of the compression spring (40) is mortgaged on the vehicle body (A), and the upper end of the compression spring (40) is supported on the support plate (11) of the hinge support (10), and the support plate (11) with a flat surface is arranged at a distance from the vehicle body (A).

3. The automobile front hood hinge according to claim 1 or 2, characterized in that: The hinge support (10) comprises a support plate (11), the inner side plate edge of the support plate (11) is provided with a lower vertical plate (111) extending downward, and the lower vertical plate (111) is welded to the vertical plate surface of the vehicle body (A).

4. The automobile front hood hinge according to claim 3, characterized in that: The outer side of the support plate (11) is provided with a support plate (112) extending upwards. The support plate (112) is arranged vertically and the plate surface is perpendicular to the vehicle width direction. The rear end of the hinge swing arm (20) is connected to the support plate (112) by a hinge shaft (30).

5. The automobile front hood hinge according to claim 3, characterized in that: A connecting plate (1111) is arranged on the upper plate edge of the lower vertical plate (111) along the side where the supporting plate (11) is located, and the connecting plate (1111) is connected to the supporting plate (11) to form a connected structure.

6. The automobile front hood hinge according to claim 2, characterized in that: The upper and lower ends of the compression spring (40) are both connected to a flat plate (41), and the two upper and lower plates (41) are connected to the support plate (11) and the vehicle body (A) respectively.

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