WO2021208538A1

WO2021208538A1 - Installation structure of front-flip-type engine hood and vehicle

Info

Publication number: WO2021208538A1
Application number: PCT/CN2021/071193
Authority: WO
Inventors: 赵凤云; 李鹏; 王希阁; 徐娟; 李梦
Original assignee: 东风越野车有限公司
Priority date: 2020-04-13
Filing date: 2021-01-12
Publication date: 2021-10-21
Also published as: CN111516759A

Abstract

An installation structure of a front-flip-type engine hood, comprising a vehicle body (1), a vehicle frame (2), a front bumper (3), an engine hood (4), a movable cross beam (5), a supporting base (6), a hinge mechanism (8), spring dampers (10) and a flexible locking mechanism (9), wherein a front end of the engine hood (4) is fixed at two ends of the movable cross beam (5) by means of the hinge mechanism (8); the middle of the movable cross beam (5) is movably connected to the supporting base (6), and the supporting base (6) is fixed onto the vehicle frame (2); the rear end of the engine hood (4) is connected to the vehicle body (1) by means of the flexible locking mechanism (9); the spring dampers (10) are symmetrically arranged at the two ends of the supporting base (6) in the length direction of the movable cross beam (5); one end of each spring damper (10) is connected to the front bumper (3), and the other end thereof is located below the movable cross beam (5) and makes contact with the movable cross beam (5) when the movable cross beam (5) is parallel to the vehicle body. In actual use, the installation structure is favorable for reducing deformation to the engine hood during driving, caused by inconsistent torsional deformation of the vehicle body and the vehicle frame.

Description

Installation structure of front-turning engine hood and vehicle

Technical field

The invention relates to an engine cover, belonging to the technical field of automobile parts, and in particular to a front-turning engine cover installation structure and a vehicle.

Background technique

For some cars that use the front flip to open the hood, the hood should cover the entire front area of the car. The hood integrates the functions of fenders, front bumpers and other parts. The hood is the installation basis for lamps and grilles. The front end of the hood is mounted on the frame through a hinge, and the rear end is locked with the front wall of the body-in-white, and the hood has a large torsional deformation; in addition, the deformation of the body and the frame caused by the road surface during the driving process is inconsistent, which further aggravates the engine The torsional deformation of the hood, so the engine hood operating conditions are more severe. In order to solve this problem, the prior art usually adopts complicated design of the hood structure and/or the use of materials with higher performance. However, this will inevitably lead to the increase of the weight of the hood and the complicated structure, which is not conducive to the whole vehicle. Lightweight production, in addition, studies have also proved that large and heavy engine covers are easier to deform.

Summary of the invention

In order to solve the above technical problems, the present invention provides a front-turning hood mounting structure and a vehicle. The mounting structure is provided with a movable crossbeam at the front end of the hood, and the rear end is connected by a flexible locking mechanism. First, the frame and the body are lowered. The degree of torsion of the engine cover caused by the relative torsion. Secondly, a spring shock absorber is arranged under the movable beam, which cooperates with the flexible locking mechanism, so that the displacement of the front and rear ends of the engine cover in the vertical direction is related. It reduces the amount of deformation caused by the inconsistent vertical displacement of the front and rear ends of the engine hood.

In order to achieve the above objective, the present invention discloses a front-turning engine hood mounting structure, including a body, a frame, a front bumper and an engine hood, and is characterized in that it also includes a movable beam, a support seat, an articulation mechanism, and a spring reducer. A shock and a flexible locking mechanism, the front end of the engine hood is fixed at both ends of the movable beam through a hinge mechanism, the middle part of the movable beam is movably connected to a support seat, the support seat is fixedly arranged on the frame, and the rear end of the engine hood Connect the car body through a flexible locking mechanism;

The spring shock absorbers are symmetrically arranged at both ends of the support base along the length of the movable beam, one end of each spring shock absorber is connected to the front bumper, and the other end is located under the movable beam and contacts the movable beam when the movable beam is parallel to the vehicle body .

Further, the length direction of the movable beam is parallel to the front bumper.

Further, the middle part of the movable beam is provided with a first through hole, and the support seat is provided with a second through hole, and the pin shaft passes through the first through hole and the second through hole to hinge the movable beam and the support seat together.

Further, the direction of the central axis of the pin shaft is perpendicular to the length direction of the movable beam.

Further, each spring shock absorber is connected to a bracket, and each bracket is fixed on the front bumper.

Further, the hinge mechanism includes a movable leaf plate connected with the engine hood and a fixed leaf plate fixedly arranged on the movable beam; the movable leaf plate and the fixed leaf plate are hinged together by a hinge pin.

Further, the flexible locking mechanism includes a slot body fixed on the engine hood, a lower fixing seat on the vehicle body, and a handle movably connected to the slot body, and the handle is connected to one end of a tension band, The other end of the tension band is connected to the lower fixing seat.

Further, the handle is provided with a roller that can be fitted into the slot on the slot body.

Further, a limit groove is provided in the middle of the inner side of the rear end of the engine hood, and the limit groove is installed in cooperation with the limit buffer block provided on the vehicle body to limit the displacement of the engine hood in the driving direction and the vertical direction;

Limiting bosses are also symmetrically distributed on the car body at both ends of the limit buffer block, and the limit bosses are used to limit the displacement of the engine cover in the vertical direction.

The invention also discloses an off-road vehicle, which includes the above-mentioned mounting structure.

The beneficial effects of the present invention are mainly embodied in the following aspects:

The invention designs that the engine hood is connected to the twistable beam arranged at the front end of the frame through a hinge, and the twistable beam is installed on a fixed bracket arranged in the middle of the frame through a rotating shaft; when the frame and the body are relatively twisted, the front end of the engine cover The cross beam can rotate around the middle shaft, and the frame torsion cannot be transmitted to the hood. The rear end of the hood is locked with the body through a flexible locking device. The hood is twisted relative to the frame along with the body. At the same time, one is arranged at each end of the cross beam. The shock-absorbing and energy-absorbing device ensures the balance after the hood is opened and buffers the beam to reduce the vibration of the hood.

Description of the drawings

Figure 1 is a schematic diagram of the positional relationship between the movable beam and the engine cover designed by the present invention;

Figure 2 is a schematic diagram of the structure of the engine cover;

Figure 3 is a schematic diagram of the engine cover structure;

Figure 4 is a schematic diagram of the movable beam structure in Figure 3;

Figure 5 is a schematic diagram of the movable beam structure in Figure 3;

Fig. 6 is a schematic diagram of the supporting seat structure in Fig. 3;

Fig. 7 is a schematic diagram of the structure of the spring shock absorber in Fig. 3;

Figure 8 is a schematic diagram of the structure of the engine cover;

Figure 9 is a schematic diagram of the structure of the engine cover;

Figure 10 is a schematic diagram of the positional relationship of the flexible locking mechanism in Figure 3;

Figure 11 is a schematic diagram of the structure of the flexible locking mechanism in Figure 10;

Figure 12 is a schematic diagram of the structure of the flexible locking mechanism in Figure 10;

The component numbers in the above drawings are as follows:

Body 1 (limit buffer block 1.1, limit boss 1.2), frame 2, front bumper 3, engine hood 4 (engine hood front 4.1, engine hood rear 4.2, limit groove 4.3), movable beam 5 (The two ends of the movable beam 5.1, the middle part of the movable beam 5.2, the first through hole 5.3), the support seat 6 (the second through hole 6.1), the pin shaft 7, the hinge mechanism 8 (movable page plate 8.1, fixed page plate 8.2, hinge pin Shaft 8.3), flexible locking mechanism 9 (among them, upper fixing seat 9.1, card slot body 9.2 (among them, first slot 9.21, second slot 9.22, protrusion 9.23), handle 9.3 (among them, roller 9.31, handle Front end 9.32), tension band 9.4, lower fixing seat 9.5), spring shock absorber 10, bracket 11.

Detailed ways

In order to better explain the present invention, the main content of the present invention will be further clarified below in conjunction with specific embodiments, but the content of the present invention is not limited to the following embodiments.

Example 1

This embodiment discloses a front-turning engine hood mounting structure, which includes a vehicle body 1, a frame 2, a front bumper 3, and an engine hood 4, and also includes a movable cross beam 5, a support seat 6, a pin shaft 7, and a hinge mechanism 8. The flexible locking mechanism 9 and the spring shock absorber 10 are shown in Figure 1, Figure 2, and Figure 3. The front end 4.1 of the engine hood is hinged on both ends 5.1 of the movable beam. The length direction of the movable beam 5 is preferred in the present invention. Parallel to the front bumper 3, the middle part of the movable crossbeam 5.2 is movably connected to the support base 6, and the support base 6 is fixedly arranged on the frame 2, wherein the movable crossbeam 5 can rely on the support base 6 as a support point, and a certain amount of It can be seen from Figure 4, Figure 5 and Figure 6 that the middle part of the movable beam 5.2 is connected to the lifting lug, the lifting lug is provided with a first through hole 5.3, and the support seat 6 is provided with a second through hole 6.1, and the pin The shaft 7 passes through the first through hole 5.3 and the second through hole 6.1 to hinge together the movable beam 5 and the support base 6, and preferably the central axis direction of the pin shaft 7 is perpendicular to the length direction of the movable beam 5, so it can be very It is good to keep the movable cross beam 5 rotating around the pin axis 7. In addition, other movable connection methods can also be selected, such as the movable cross beam 5 passes through the through hole on the support base 6 and is hinged together with the support base 6, or on the support base 6. The manners such as setting limit arc grooves are all within the protection scope of the present invention, and the present invention will not be described in detail.

The above-mentioned movable connection method is selected because the relative torsion between the frame 2 and the body 1 is isolated, so that the torsion of the frame 2 cannot be directly transmitted to the body 1 through the front end 4.1 of the hood, and at the same time, the torsion of the body 1 cannot be It is directly transmitted to the frame 2 and isolates the relative torsion of the two, resulting in a reduction in the degree of torsion of the hood 4.

In addition, in conjunction with Figures 4 and 5, it can be seen that the hinge mechanism 8 between the two ends 5.1 of the movable beam and the engine hood 4 includes a movable leaf 8.1 connected to the engine hood 4 and a fixedly arranged on the movable cross beam 5. The fixed page plate 8.2; the movable page plate 8.1 and the fixed page plate 8.2 are hinged together by a hinge pin 8.3.

2 and 7 again, the spring shock absorbers 10 are symmetrically distributed at both ends of the support base 6 along the length of the movable beam 5, and the number of spring shock absorbers 10 is an even number that is not zero, such as two , Four, etc., the structure is a conventional structure, this embodiment will not be repeated, one end of each spring shock absorber 10 is connected to the front bumper 3, and the other end is located under the movable cross beam 5 and when the movable cross beam 5 is in a static state parallel to the body 1 It is in contact with the movable beam 5 but has no interaction force.

As shown in FIG. 7, the spring shock absorber 10 is connected to the bracket 11, and each bracket 11 is fixed on the front bumper 3. The spring shock absorber 10 designed in the present invention has a flexible limiting effect on the movable beam 5, ensuring the balance of the left and right ends of the engine hood 4 when it is opened, and buffering the vibration of the vehicle frame when the vehicle is running when the hood 4 is closed. Specifically, in conjunction with Fig. 8, it can be seen that after the engine hood 4 is opened forward, if there is no support device at both ends of the movable beam 5, the movable beam 5 will rotate around the middle pin 7 and the engine hood 4 cannot remain stable. At this time, the spring damping The hood 10 plays a certain supporting role on the movable beam 5 to avoid the deflection of the hood 4 caused by the rotation of the hood 4 around the intermediate pin 7; The relative torsion of the frame 2, if the front movable beam 5 can rotate freely around the front pin 7 of the frame, there is no restriction. When the body 1 and the frame 2 undergo relatively large torsional deformation, the rear end 4.2 of the engine hood will move with the body 1 , The front end of the engine hood 4.1 moves with the frame 2, and the engine hood 4 is deformed due to relative torsion. At this time, the gap between the engine hood 4 and the engine compartment parts arranged on the frame 2 will also change greatly. In order to avoid the engine hood Interference with parts of the engine room requires a large space for movement when designing the engine cover, which will result in a larger engine cover or difficulty in nacelle layout. The most important thing is that the spring shock absorber 10 needs to buffer the vibration of the movable beam 5 caused by the impact of the road surface and absorb the vibration energy to reduce the impact and impact of the vibration on the engine cover 4.

At the same time, the flexible locking mechanism 9 between the engine hood 4 and the vehicle body 1 designed in the present application is also beneficial to reduce the influence of the torsion and vibration of the vehicle body 1 on the engine hood 4.

Specifically, in conjunction with Figures 10, 11 and 12, it can be seen that the flexible locking mechanism 9 includes a slot body 9.2 fixed on the engine hood 4 and a lower fixing seat 9.5 located on the vehicle body 1, and is connected to the slot The body 9.2 is movably connected to the handle 9.3, the handle 9.3 is connected to one end of the tension band 9.4, the other end of the tension band 9.4 is connected to the lower fixing seat 9.5, and the card slot body 9.2 is fixedly arranged on the upper fixing seat 9.1 Engine cover 4.

As shown in Figure 11, the flexible locking mechanism 9 is in an open state; in this embodiment, the slot body 9.2 is preferably hinged with a handle 9.3, and the handle 9.3 is hinged with a tension band 9.4; wherein the slot body 9.2 is connected with the handle 9.3 Point B, the connection point A between the handle 9.3 and the tension band 9.4, and the connection point C between the tension band 9.4 and the lower fixing seat 9.5 are enclosed to form a triangle with relatively high stability.

Specifically, the card slot body 9.2 includes a first card slot 9.21, a second card slot 9.22, and a protrusion 9.23 located between the first card slot 9.21 and the second card slot 9.22, and the handle 9.3 includes a handle front end 9.32 and the roller 9.31, wherein the front end of the handle 9.32 is inserted into the second slot 9.22 and is hinged to the slot body 9.2; the tension band 9.4 is an extensible elastic band, and for its specific material, this The invention is not limited in any way.

Pull the handle 9.3 shown in Fig. 11 upwards forcefully, the handle 9.3 moves upwards, and the tension band 9.4 stretches to ensure that the roller 9.31 on the handle 9.3 passes over the protrusion 9.23 on the slot body 9.2 and then snaps into the first groove 9.21 to achieve For locking purposes, this process needs to overcome the tension of the tension belt 9.4. And as shown in Figure 12, even after locking, the above connection points A, B, and C still enclose to form a stable triangle.

Therefore, the present invention reduces the force influence of the frame 2 on the front end 4.1 of the engine hood, and the influence of the vehicle body 1 on the rear end 4.2 of the engine hood, so that the front end of the engine hood 4.1 And the deformation of the back end 4.2 is smaller.

Example 2

9 and 10, the inner middle of the rear end 4.2 of the engine hood is provided with a limit groove 4.3, and the limit groove 4.3 cooperates with the limit buffer block 1.1 provided on the vehicle body 1 for closing the engine hood. In the state, the displacement of the engine cover 4 in the horizontal, left, and vertical directions is restricted.

At the same time, on the body 1 at both ends of the limit buffer block 1.1, there are also symmetrical limit bosses 1.2 distributed, the limit bosses 1.2 are used to limit the vertical displacement of the engine hood 4 when the engine hood is closed. , Where the limit boss 1.2 after the engine hood 4 is closed is in contact with the rear edge beam on the inner side of the engine hood.

Example 3

In addition, this embodiment also protects an off-road vehicle, which includes the above-mentioned mounting structure.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", " The orientation or positional relationship indicated by "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have The specific orientation, construction and operation in a specific orientation cannot be understood as a limitation of the present invention.

The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, the meaning of "more than one" includes one.

In the description of the present invention, it should be noted that the terms "installed", "connected", and "connected" should be understood in a broad sense unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations.

The above embodiments are only the best examples, and are not intended to limit the implementation of the present invention. In addition to the above-mentioned embodiments, the present invention has other embodiments. All technical solutions formed by equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

Claims

A front-turning type engine cover installation structure, including a vehicle body, a frame, a front bumper and an engine cover, is characterized in that it also includes a movable beam, a support seat, an articulation mechanism, a spring shock absorber and a flexible locking mechanism. The front end of the engine hood is fixed to both ends of the movable crossbeam by a hinge mechanism, the middle part of the movable crossbeam is movably connected to a support seat, the support seat is fixedly arranged on the frame, and the rear end of the engine hood is connected to the vehicle body through a flexible locking mechanism;

The spring shock absorbers are symmetrically arranged at both ends of the support base along the length of the movable beam. One end of each spring shock absorber is connected to the front bumper, and the other end is located under the movable beam and contacts the movable beam when the movable beam is parallel to the vehicle body. .
The mounting structure of the front-turning engine hood according to claim 1, wherein the longitudinal direction of the movable cross member is parallel to the front bumper.
The installation structure of the forward-turning engine hood according to claim 1, wherein the middle part of the movable beam is provided with a first through hole, the support seat is provided with a second through hole, and the pin shaft passes through the first through hole, The second through hole hinges the movable cross beam and the support base together.
The mounting structure of the forward-turning engine hood according to claim 3, wherein the direction of the central axis of the pin shaft is perpendicular to the length direction of the movable beam.
The mounting structure of the forward-turning engine cover according to any one of claims 1 to 4, wherein each spring damper is connected to a bracket, and each bracket is fixed on the front bumper.
The mounting structure of the forward-turning engine hood according to any one of claims 1 to 4, characterized in that: the hinge mechanism includes a movable leaf plate connected with the engine hood and a fixedly arranged on the movable beam The fixed page; the movable page and the fixed page are hinged together by a hinge pin.
The mounting structure of the forward-turning engine hood according to any one of claims 1 to 4, wherein the flexible locking mechanism includes a slot body fixed on the engine hood and a lower fixing seat on the vehicle body, And a handle movably connected with the card slot body, the handle is connected with one end of the tension band, and the other end of the tension band is connected with the lower fixing seat.
8. The mounting structure of the forward-turning engine hood according to claim 7, wherein the handle is provided with a roller that can be fitted into the slot on the slot body.
The mounting structure of the forward-turning engine hood according to claim 1 or 2 or 3 or 4 or 6, characterized in that: the inner middle of the rear end of the engine hood is provided with a limiting groove, and the limiting groove is connected to the body The set limit buffer block is matched with the installation to limit the displacement of the engine cover in the driving direction and the vertical direction;

Limiting bosses are also symmetrically distributed on the car body at both ends of the limit buffer block, and the limit bosses are used to limit the displacement of the engine cover in the vertical direction.
An off-road vehicle, which includes the mounting structure of claim 1.