Engine hood hinge, engine hood and automobile

Abstract

The invention belongs to the technical field of automobile hinges, and discloses an engine hood hinge, an engine hood and an automobile, the engine hood hinge comprises a hinge seat, a hinge arm and an anti-loosening hinge shaft assembly, the hinge seat comprises a vertically adjustable threaded connecting piece, the threaded connecting piece is screwed and fixed on the hinge seat, matched hinge holes are formed in the hinge seat and the hinge arm, and the anti-loosening hinge shaft assembly is arranged in the hinge seat. The hinge arm is connected to the hinge base in a pivoted mode through an anti-loosening hinge shaft assembly hinged to the interior of the hinge hole. According to the hinge, the position of the pin shaft is changed into bolt connection from a rivet turning scheme, so that coating damage caused by rivet turning of the pin shaft is effectively avoided, the anti-corrosion performance of the hinge is improved, Z-direction adjustment of the hinge of the engine hood can be achieved, and the problem that the surface of the engine hood and a fender is poor is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile hinges, and in particular relates to an engine hood hinge, an engine hood and an automobile. Background Art

[0002] In the traditional hinge structure, the hinge seat is connected to the body, the hinge arm is connected to the engine hood, and the hinge is located on the inside of the fender. After the engine hood is equipped with accessories such as air springs and sealing strips, the surface difference between the engine hood and the fender will change due to the supporting force of the air springs and sealing strips. In order to adjust the surface difference, the engine hood is generally pre-adjusted before the accessories are assembled. The traditional hinge structure cannot achieve Z-direction adjustment. As a result, the surface difference between the actual vehicle engine hood and the fender does not meet the design requirements, affecting the quality of the entire vehicle.

[0003] In addition, in order to ensure the strength of the hinge pin, the pin is usually riveted. During the riveting process, the surface galvanized layer on both sides of the pin will be damaged, which will greatly reduce the anti-corrosion performance of the hinge pin. After a few years of use, the pin will be corroded to varying degrees, affecting the quality of the car. Summary of the invention

[0004] The purpose of the present invention is to provide a hood hinge, an hood and a car, in which the pin position is changed from a riveting scheme to a bolt connection, thereby effectively avoiding the damage to the coating caused by the riveting of the pin, improving the corrosion resistance of the hinge, realizing the Z-direction adjustment of the hood hinge, and solving the problem of surface difference between the hood and the fender.

[0005] The specific contents of the plan are as follows:

[0006] A hood hinge comprises a hinge seat, a hinge arm and an anti-loosening hinge shaft assembly, the hinge seat comprises a vertically adjustable threaded connector, the threaded connector is screwed and fixed on the hinge seat, matching hinge holes are provided on the hinge seat and the hinge arm, and the hinge arm is pivotally connected to the hinge seat via an anti-loosening hinge shaft assembly hinged in the hinge hole.

[0007] The hinge seat and hinge arm of the engine hood hinge of the present invention are both provided with matching hinge holes at the hinge position. The hinge arm is pivotally connected to the hinge seat through an anti-loosening hinge shaft assembly hinged in the hinge hole, and the hinge arm can rotate around the anti-loosening hinge shaft assembly and the hinge seat. The anti-loosening hinge shaft assembly can prevent the engine hood hinge from causing torque attenuation or bolt disengagement after collision due to vibration and other reasons during long-term use. The traditional engine hood hinge hinge shaft usually adopts a pin shaft. In order to ensure the strength of the hinge pin shaft, the pin shaft position is generally riveted. During the pin shaft riveting process, the surface galvanized layer on both sides of the pin shaft will be destroyed, resulting in a significant reduction in the anti-corrosion performance of the hinge pin shaft position. After a few years of use by users, the pin shaft position will show different degrees of corrosion, affecting the quality of the car. The anti-loosening hinge shaft assembly of the present invention adopts anti-loosening bolts and anti-loosening fastening nuts, which avoids the problem that the surface galvanized layer on both sides of the pin shaft is destroyed during the traditional pin shaft riveting process, resulting in a significant reduction in the anti-corrosion performance of the hinge pin shaft position. The anti-loosening hinge shaft assembly also includes a bushing and a gasket. The purpose of the bushing and the gasket is to prevent wear during the rotation of the hinge arm and reduce the rotational torque. The bolt head of the anti-loosening bolt is an external hexagonal bolt. The external hexagonal bolt is simple to operate, has uniform force, good self-pinning, a large pre-tightening contact area, a large pre-tightening force, a wider range of full-thread length, and a reaming hole, which can fix the position of the parts and withstand the shear caused by the lateral force. The bushing matching part of the anti-loosening bolt is arranged between the bolt head and the threaded part, and is used to install the bushing. The anti-loosening fastening nut screws the hinge arm and the hinge seat sleeved on the anti-loosening bolt to the anti-loosening bolt, and limits the position by local pressure forming at the tail end of the anti-loosening bolt to avoid the problem of loosening after long-term use. The anti-loosening fastening nut used in the present invention is a press-riveted nut that is press-riveted on the hinge hole of the hinge seat and has a press-fitting tooth at the front end. The press-fitting tooth is fixed to the hinge hole to prevent the anti-loosening fastening nut from rotating circumferentially when tightened. The hinge seat is fixed to the corresponding position of the vehicle body by installing bolts and adjusting nuts. The installation bolts and adjusting nuts cooperate to realize the Z-direction position adjustment of the hinge seat. The Z-direction of the car refers to the vertical direction, which solves the problem that the traditional hinge structure cannot achieve Z-direction adjustment, resulting in the surface difference between the actual vehicle hood and the fender not meeting the design requirements, affecting the quality of the entire vehicle.

[0008] Furthermore, the anti-loosening hinge shaft assembly includes an anti-loosening bolt and an anti-loosening fastening nut. The anti-loosening bolt is hinged in the hinge holes of the hinge arm and the hinge seat and is screwed and fixed by the anti-loosening fastening nut. The hinge arm can rotate around the hinge seat with the anti-loosening bolt as the axis.

[0009] The anti-loosening hinge shaft assembly of the present invention adopts anti-loosening bolts and anti-loosening fastening nuts, and the hinge arm is hinged on the hinge seat by the anti-loosening bolts and anti-loosening fastening nuts, which overcomes the defect that the traditional engine hood hinge uses a pin shaft hinge to rivet on the pin shaft position to ensure strength, thereby damaging the zinc plating layer on both sides of the pin shaft surface, thereby improving the anti-corrosion performance of the engine hood hinge. A limiting structure is provided on the hinge arm, and the hinge arm can only rotate within a certain angle with the anti-loosening bolt as the axis.

[0010] Furthermore, the anti-loosening hinge shaft assembly also includes a bushing, which is an I-shaped spool structure with an axial through hole in the middle connecting portion, and the bushing is rotatably sleeved between the hinge arm and the anti-loosening bolt.

[0011] The present invention adds a bushing to the anti-loosening bolt, and the hinge arm is rotatably sleeved on the bushing, so as to prevent wear during the rotation of the hinge arm and reduce the rotation torque. The bushing can be a steel-backed copper mesh + polytetrafluoroethylene bushing with high wear resistance.

[0012] Furthermore, the anti-loosening hinge shaft assembly also includes a gasket, which is a circular ring-shaped gasket, which is limitedly sleeved on the anti-loosening bolt and clamped between the bushing and the hinge seat.

[0013] The anti-loosening hinge shaft assembly also adds a gasket. The material of the gasket is automotive structural steel, which has high strength, high toughness and durability. The gasket is sleeved on the anti-loosening bolt and clamped between the bushing and the hinge seat, which can further prevent wear during the rotation of the hinge arm and reduce the rotation torque. A necking structure is provided on the anti-loosening bolt, and the gasket is limitedly sleeved on the necking structure. The gasket and the anti-loosening fastening nut together fix the hinge seat on the anti-loosening bolt.

[0014] Furthermore, the anti-loosening bolt includes a bolt head, a bushing fitting portion, a threaded portion, a limiting portion and a necking structure. The bolt head is an external hexagonal convex column structure, and a ring-shaped bolt cap is provided at the rear end thereof. The bushing fitting portion is arranged between the bolt head and the threaded portion, and the necking structure is connected between the bushing fitting portion and the threaded portion. The bushing is matched and sleeved on the bushing fitting portion. The threaded portion of the anti-loosening bolt is threadedly fixed to the anti-loosening fastening nut, and the necking structure is in close contact with the front end of the gasket. The limiting portion is arranged on the rear end of the threaded portion, and the limiting portion of the anti-loosening bolt is limited and fixed on the outer end face of the anti-loosening fastening nut.

[0015] The bolt head of the anti-loosening bolt is an external hexagonal convex column structure, and a ring bolt cap is provided at the rear end thereof. The bushing matching part is arranged between the bolt head and the threaded part, the necking structure is connected between the bushing matching part and the threaded part, the bushing matching sleeve is connected to the bushing matching part, and the threaded part of the anti-loosening bolt is screwed and fixed on the anti-loosening fastening nut. The necking structure is in close contact with the front end of the gasket. Because the gasket is limited on the necking structure, the gasket and the anti-loosening fastening nut can fix the hinge seat on the anti-loosening bolt together. The limiting part is arranged on the rear end of the threaded part, and the limiting part of the anti-loosening bolt is limited and fixed on the outer end surface of the anti-loosening fastening nut.

[0016] Furthermore, the length of the bushing fitting portion is greater than the horizontal distance between the left and right end faces of the bushing, the inner wall of the bushing is tightly in contact with the corresponding position of the hinge arm, the hole of the bushing and the side wall of the bushing fitting portion are clearance fit, and the bushing can be rotated with the bushing fitting portion as the axis; or, the bolt head annular bolt cap and the gasket tightly crimp and fix the bushing, the inner walls of the left and right ends of the bushing are adjacent to the corresponding positions of the hinge arm, and the middle circumferential outer wall of the bushing is clearance fit with the hinge hole of the hinge arm, and the hinge arm can be rotated with the bushing as the axis.

[0017] There are two schemes for the matching of the bushing and the hinge arm. The first is that there is a clearance fit between the bushing and the anti-loosening bolt, the length of the bushing matching part is greater than the horizontal distance between the left and right end faces of the bushing, the inner walls at the left and right ends of the bushing are in tight contact with the corresponding positions of the hinge arm, and there is a clearance fit between the hole of the bushing and the circumferential outer wall of the bushing matching part, and the bushing and the hinge arm can rotate together with the bushing matching part as the axis; the second scheme is that the bolt head annular bolt cap and the gasket tightly press and fix the bushing, the inner walls of the left and right ends of the bushing are adjacent to the corresponding positions of the hinge arm, and there is a clearance fit between the middle circumferential outer wall of the bushing and the hinge hole of the hinge arm, and the hinge arm can rotate with the bushing as the axis.

[0018] The limiting method of the limiting part of the anti-loosening bolt can be to locally press the limiting part so that it is completely pressed and limited on the outer end surface of the anti-loosening fastening nut to prevent the anti-loosening bolt from loosening during use.

[0019] Furthermore, the anti-loosening fastening nut is a compression rivet nut, and the front circumference of the anti-loosening fastening nut is provided with engaging teeth, which are interference fit in the hinge hole of the hinge seat, and the rear of the anti-loosening fastening nut is crimped to the outer edge of the hinge hole of the hinge seat.

[0020] The anti-loosening fastening nut is a pressure riveted nut, and the front outer circumferential surface of the anti-loosening fastening nut is provided with bite teeth, which are interference fit in the hinge hole of the hinge seat, and the rear of the anti-loosening fastening nut is pressure riveted on the outer edge of the hinge hole of the hinge seat. It can prevent the anti-loosening fastening nut from rotating circumferentially when the anti-loosening bolt is tightened, affecting the tightening effect.

[0021] Furthermore, the hinge seat includes two groups of threaded connectors, each group of threaded connectors includes an adjusting nut, and the adjusting nut is fixed to the hinge seat by threading with a bolt. The hinge seat can adjust the vertical position through the cooperation of the adjusting nut and the bolt.

[0022] The hinge seat and the corresponding position of the car body are fixedly connected by two sets of threaded connectors. Each set of threaded connectors includes an adjusting nut. The adjusting nut and the bolt cooperate to change the position of the hinge seat in the Z direction, i.e. the vertical direction, of the car, so as to facilitate the adjustment of the surface difference between the engine hood and the fender.

[0023] An engine hood comprises the engine hood hinge.

[0024] A car comprises an engine hood, wherein a hinge arm of the engine hood hinge is fixedly connected to the inner wall of the engine hood, and a hinge seat is screwed and fixed to a sheet metal corresponding to the engine compartment through bolts and adjusting nuts.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention changes the position of the pin from riveting to bolt connection, which effectively avoids the damage of the coating caused by riveting the pin and improves the anti-corrosion performance of the hinge;

[0027] 2. The present invention uses an adjusting nut to fix the hinge seat to achieve Z-direction adjustment of the engine hood hinge, thereby solving the problem of difficulty in adjusting the surface difference between the engine hood and the fender. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the overall structure diagram of the present invention;

[0029] Figure 2 is a schematic diagram of the cross-sectional structure of the hinge portion of the present invention;

[0030] Figure 3 It is a schematic diagram of the connection position of the anti-loosening hinge shaft assembly of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the anti-loosening bolt of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the anti-loosening fastening nut of the present invention.

[0033] In the figure:

[0034] 1. Hinge seat; 1.1. Threaded connector; 1.11. Adjusting nut; 2. Hinge arm; 3. Anti-loosening hinge shaft assembly; 3.1. Anti-loosening bolt; 3.11. Bolt head; 3.12. Bushing mating part; 3.13.

[0035] Threaded part; 3.14. Limiting part; 3.15. Neck structure; 3.2. Anti-loosening fastening nut; 3.21.

[0036] occlusal tooth; 3.3. bushing; 3.4. gasket. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0039] It should be noted that the directions or positional relationships indicated by the terms "front", "rear", "inside" and "outside" in the present invention are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0041] The embodiment of the present invention, namely, an embodiment of a hood hinge, an hood and a car, is described below in combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Provide detailed explanation.

[0042] Embodiment 1:

[0043] See Figure 1 , Figure 2 As shown, a hood hinge comprises a hinge seat 1, a hinge arm 2 and an anti-loosening articulation shaft assembly 3, the hinge seat 1 comprises a vertically adjustable threaded connector 1.1, the threaded connector 1.1 is screwed and fixed on the hinge seat 1, matching articulation holes are provided on the hinge seat 1 and the hinge arm 2, the hinge arm 2 is pivotally connected to the hinge seat 1 through the anti-loosening articulation shaft assembly 3 hinged in the articulation hole.

[0044] See Figure 3 As shown, the anti-loosening hinge shaft assembly 3 includes an anti-loosening bolt 3.1 and an anti-loosening fastening nut 3.2. The anti-loosening bolt 3.1 is hinged in the hinge hole of the hinge arm 2 and the hinge seat 1 and is screwed and fixed by the anti-loosening fastening nut 3.2. The hinge arm 2 can rotate around the hinge seat 1 with the anti-loosening bolt 3.1 as the axis.

[0045] The anti-loosening hinge shaft assembly 3 also includes a bushing 3.3. The bushing 3.3 is an I-shaped spool structure with an axial through hole in the middle connecting portion. The bushing 3.3 is rotatably sleeved between the hinge arm 2 and the anti-loosening bolt 3.1.

[0046] The anti-loosening hinge shaft assembly 3 also includes a gasket 3.4, which is a circular ring-shaped gasket 3.4, and the gasket 3.4 is limitedly sleeved on the anti-loosening bolt 3.1 and clamped between the bushing 3.3 and the hinge seat 1.

[0047] See Figure 4 As shown, the anti-loosening bolt 3.1 includes a bolt head 3.11, a bushing matching portion 3.12, a threaded portion 3.13, a limiting portion 3.14 and a necking structure 3.15. The bolt head 3.11 is an external hexagonal convex column structure, and a ring-shaped bolt cap is provided at its rear end. The bushing matching portion 3.12 is arranged between the bolt head 3.11 and the threaded portion 3.13. The necking structure 3.15 is connected between the bushing matching portion 3.12 and the threaded portion 3.13. The bushing 3.3 is matched and sleeved on the bushing matching portion 3.12. The threaded portion 3.13 of the anti-loosening bolt 3.1 is screwed and fixed to the anti-loosening fastening nut 3.2. The necking structure 3.15 is in close contact with the front end of the gasket 3.4. The limiting portion 3.14 is arranged on the rear end of the threaded portion 3.13. The limiting portion 3.14 of the anti-loosening bolt 3.1 is limited and fixed on the outer end surface of the anti-loosening fastening nut 3.2.

[0048] The length of the bushing fitting portion 3.12 is greater than the horizontal distance between the left and right end faces of the bushing 3.3, the inner wall of the bushing 3.3 is tightly in contact with the corresponding position of the hinge arm 2, and there is a clearance fit between the hole of the bushing 3.3 and the side wall of the bushing fitting portion 3.12, and the bushing 3.3 can rotate with the bushing fitting portion 3.12 as the axis; or, the annular bolt cap of the bolt head 3.11 and the gasket 3.4 tightly crimp and fix the bushing 3.3, the inner walls of the left and right ends of the bushing 3.3 are adjacent to the corresponding positions of the hinge arm 2, and there is a clearance fit between the middle circumferential outer wall of the bushing 3.3 and the hinge hole of the hinge arm 2, and the hinge arm 2 can rotate with the bushing 3.3 as the axis.

[0049] See Figure 5 As shown, the anti-loosening fastening nut 3.2 is a pressure riveted nut, and the front circumference of the anti-loosening fastening nut 3.2 is provided with bite teeth 3.21, which are interference fit in the hinge hole of the hinge seat 1, and the rear of the anti-loosening fastening nut 3.2 is pressed against the outer edge of the hinge hole of the hinge seat 1.

[0050] The hinge seat 1 comprises two sets of threaded connectors 1.1, each set of threaded connectors 1.1 comprises an adjusting nut 1.11, and the adjusting nut 1.11 is screwed and fixed on the hinge seat 1 with a bolt. The hinge seat 1 can adjust the vertical position by the cooperation between the adjusting nut 1.11 and the bolt.

[0051] Embodiment 2:

[0052] The present invention also provides an engine hood, comprising the engine hood hinge.

[0053] Embodiment 3:

[0054] The present invention also provides a car, comprising the engine hood, wherein the hinge arm 2 of the engine hood hinge is fixedly connected to the inner wall of the engine hood, and the hinge seat 1 is screwed and fixed to the sheet metal corresponding to the engine compartment through bolts and adjusting nuts 1.11.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An engine hood hinge, characterized in that: The invention comprises a hinge seat (1), a hinge arm (2) and an anti-loosening hinge shaft assembly (3); the hinge seat (1) comprises a vertically adjustable threaded connection member (1.1); the threaded connection member (1.1) is screwed and fixed on the hinge seat (1); the hinge seat (1) and the hinge arm (2) are both provided with matching hinge holes; the hinge arm (2) is pivotally connected to the hinge seat (1) via the anti-loosening hinge shaft assembly (3) hinged in the hinge hole.

2. The hood hinge according to claim 1, characterized in that: The anti-loosening hinge shaft assembly (3) comprises an anti-loosening bolt (3.1) and an anti-loosening fastening nut (3.2); the anti-loosening bolt (3.1) is hinged in the hinge holes of the hinge arm (2) and the hinge seat (1) and is screwed and fixed by the anti-loosening fastening nut (3.2); the hinge arm (2) can be rotated around the hinge seat (1) with the anti-loosening bolt (3.1) as the axis.

3. The hood hinge according to claim 2, characterized in that: The anti-loosening hinge shaft assembly (3) further comprises a bushing (3.3), the bushing (3.3) being an I-shaped spool structure with an axial through hole provided at the middle connecting portion, and the bushing (3.3) being rotatably sleeved between the hinge arm (2) and the anti-loosening bolt (3.1).

4. The hood hinge according to claim 3, characterized in that: The anti-loosening hinge shaft assembly (3) also includes a gasket (3.4), which is a circular ring-shaped gasket (3.4) and is limitedly sleeved on the anti-loosening bolt (3.1) and clamped between the bushing (3.3) and the hinge seat (1).

5. The hood hinge according to claim 4, characterized in that: The anti-loosening bolt (3.1) comprises a bolt head (3.11), a bushing fitting portion (3.12), a threaded portion (3.13), a limiting portion (3.14) and a necking structure (3.15); the bolt head (3.11) is an external hexagonal convex column structure, a ring-shaped bolt cap is provided at the rear end thereof, the bushing fitting portion (3.12) is arranged between the bolt head (3.11) and the threaded portion (3.13), and the necking structure (3.15) is connected to the bushing fitting portion (3.12) and the threaded portion (3.13). The bushing (3.3) is matched and sleeved on the bushing matching part (3.12), the threaded part (3.13) of the anti-loosening bolt (3.1) is screwed and fixed on the anti-loosening fastening nut (3.2), the necking structure (3.15) is tightly in contact with the front end of the gasket (3.4), the limiting part (3.14) is arranged on the rear end of the threaded part (3.13), and the limiting part (3.14) of the anti-loosening bolt (3.1) is fixed on the outer end surface of the anti-loosening fastening nut (3.2).

6. The hood hinge according to claim 5, characterized in that: The length of the bushing fitting portion (3.12) is greater than the horizontal distance between the left and right end faces of the bushing (3.3), the inner side wall of the bushing (3.3) is in close contact with the corresponding position of the hinge arm (2), the hole of the bushing (3.3) and the side wall of the bushing fitting portion (3.12) are clearance fit, and the bushing (3.3) can be rotated around the bushing fitting portion (3.12); or, the annular bolt cap of the bolt head (3.11) and the gasket (3.4) tightly press-fit the bushing (3.3) to fix it, the inner side walls of the left and right ends of the bushing (3.3) are adjacent to the corresponding positions of the hinge arm (2), and the middle circumferential outer side wall of the bushing (3.3) and the hinge hole of the hinge arm (2) are clearance fit, and the hinge arm (2) can be rotated around the bushing (3.3) as the axis.

7. The hood hinge according to claim 6, characterized in that: The anti-loosening fastening nut (3.2) is a pressure riveted nut, and the front part of the anti-loosening fastening nut (3.2) is circumferentially provided with engaging teeth (3.21), which are interference-fitted in the hinge hole of the hinge seat (1), and the rear part of the anti-loosening fastening nut (3.2) is pressed against the outer edge of the hinge hole of the hinge seat (1).

8. The hood hinge according to claim 7, characterized in that: The hinge seat (1) comprises two groups of threaded connectors (1.1), each group of threaded connectors (1.1) comprises an adjusting nut (1.11), the adjusting nut (1.11) is threadedly fixed to the hinge seat (1) with a bolt, and the hinge seat (1) can adjust the vertical position through the cooperation between the adjusting nut (1.11) and the bolt.

9. An engine hood, characterized in that: Comprising the hood hinge according to any one of claims 1-8.

10. An automobile, characterized in that: It comprises the engine hood as claimed in claim 9, wherein the hinge arm (2) of the engine hood hinge is fixedly connected to the inner wall of the engine hood, and the hinge seat (1) is screwed and fixed to the sheet metal corresponding to the engine compartment through bolts and adjusting nuts (1.11).

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