Engine hood hinge, engine hood assembly and vehicle
By setting a collapsed part in the limit structure of the engine hood hinge to absorb the impact energy during collision, the serious head injury problem of pedestrians caused by the strength of the existing hinge is solved, and a safer vehicle collision protection effect is achieved.
Patent Information
- Application Number
- CN202311198531.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-15
- Publication Date
- 2025-03-18
AI Technical Summary
The existing engine hood has a high strength, which can easily cause serious head injuries when the vehicle collides with pedestrians.
An engine hood hinge is designed, including a fixed seat and a rotating arm. One of the fixed seat and a rotating arm is provided with a limit structure. The limit structure includes a collapsed part. When the engine hood is subjected to external force, the collapsed part will deform, absorb impact energy, and cushion the head impact.
Through deformation of the collapsed part, part of the impact energy is absorbed, and the impact on the pedestrian's head is reduced. The acceleration and head injury index HIC is significantly reduced, meeting the five-star development target of C-NCAP and reducing the casualties of pedestrians in human-vehicle collision accidents.
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Figure CN119641193A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of vehicle technology, and in particular to an engine hood hinge, an engine hood assembly and a vehicle. Background Art
[0002] The hood system is a relatively independent assembly in the vehicle body structure and is a necessary channel for users to inspect and repair the power system. The vehicle's hood is fixed to the body through hinges, and the hood is opened and closed through hinges. In order for the hinge to support and position the hood, it is necessary to ensure that the hinge has sufficient strength. Therefore, the strength of the hinge is generally designed to be large.
[0003] However, when the vehicle is in motion, it is easy to have a head-on collision with a pedestrian, which often causes the pedestrian's head to hit the engine hood. When the pedestrian's head hits the area opposite to the hinge, the hinge is strong and will cause a greater impact on the pedestrian's head, resulting in serious head injuries and endangering personal safety. Summary of the invention
[0004] In order to solve the above technical problems, the present disclosure provides a hood hinge, a hood assembly and a vehicle.
[0005] A first aspect of the present disclosure provides an engine hood hinge, comprising:
[0006] A fixing seat, used for connecting with the vehicle body;
[0007] A rotating arm, used to be connected to the engine hood, the rotating arm being rotatably connected to the fixing seat;
[0008] Among them, one of the fixed seat and the rotating arm includes a limiting structure, which is used to abut against the other of the fixed seat and the rotating arm; the limiting structure includes a collapse portion, which is used to deform when the engine hood is subjected to an external force toward the fixed seat.
[0009] Further, the limiting structure is arranged on the fixing seat, and the fixing seat includes a fixing plate;
[0010] The collapse portion includes a first collapse plate and a second collapse plate connected to each other, a first bending portion is provided between the first collapse plate and the second collapse plate, and the first collapse plate is connected to the fixing plate;
[0011] The second crusher plate extends from the top of the first crusher plate toward one side of the first crusher plate;
[0012] The second collapse plate is used to abut against the rotating arm.
[0013] Further, the engine hood hinge further comprises a third crush plate and a fourth crush plate connected to each other, a second bending portion is provided between the third crush plate and the fourth crush plate, and the third crush plate is connected to the rotating arm;
[0014] The fourth collapse plate extends from the bottom of the third collapse plate toward one side of the third collapse plate;
[0015] The fourth collapse plate is used to abut against the fixing seat.
[0016] Furthermore, one of the second crush plate and the fourth crush plate is provided with a limiting member, and the limiting member is used to abut against the other of the second crush plate and the fourth crush plate.
[0017] Furthermore, the limiting member includes a limiting bolt, which is threadedly connected to one of the second collapse plate and the fourth collapse plate, at least a portion of the limiting bolt is located between the second collapse plate and the fourth collapse plate, and an end of the limiting bolt in the height direction abuts against the other of the second collapse plate and the fourth collapse plate.
[0018] Further, the height H1 of the first collapse plate satisfies: 11 mm ≤ H1 ≤ 13 mm; the width W1 of the first collapse plate along the X direction satisfies: 11 mm ≤ W1 ≤ 13 mm;
[0019] And / or, a height H2 of the third collapse plate satisfies: 11 mm≤H2≤13 mm; a width W2 of the third collapse plate along the X direction satisfies: 11 mm≤W2≤13 mm.
[0020] Furthermore, it also includes a front connecting rod and a rear connecting rod, wherein two ends of the front connecting rod are rotatably connected to the fixing seat and the rotating arm respectively, and two ends of the rear connecting rod are rotatably connected to the fixing seat and the rotating arm respectively.
[0021] A second aspect of the present disclosure provides an engine hood assembly, comprising the engine hood hinge described in the first aspect.
[0022] A third aspect of the present disclosure provides a vehicle, comprising the engine hood assembly described in the second aspect.
[0023] Furthermore, the fixing plate of the engine hood hinge is connected to the front beam of the vehicle body by fasteners. The technical solution provided by the embodiment of the present disclosure has the following advantages over the prior art:
[0024] The hood hinge provided by the disclosed embodiment includes a fixed seat and a rotating arm; the fixed seat is used to connect with the vehicle body; the rotating arm is used to connect with the hood, and the rotating arm is rotatably connected with the fixed seat; one of the fixed seat and the rotating arm includes a limiting structure, and the limiting structure is used to abut with the other of the fixed seat and the rotating arm; the limiting structure includes a collapse part, and the collapse part is used to deform when the hood is subjected to an external force in the direction of the fixed seat. In the disclosed embodiment, when the hood is subjected to an external force in the direction of the fixed seat through the collapse part of the fixed seat limiting structure, the hood will transfer the force to the rotating arm, so that the rotating arm squeezes the collapse part and the collapse part is deformed. When a collision occurs between a pedestrian and a vehicle, the collapse part collapses and deforms under the impact of the external force, absorbs part of the impact energy, and alleviates the impact on the pedestrian's head; the possibility of collision damage to the pedestrian's head is greatly reduced, and the casualties of pedestrians in human-vehicle collision accidents are reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0027] Figure 1 It is a structural schematic diagram of the engine hood hinge according to an embodiment of the present disclosure;
[0028] Figure 2 This is a schematic structural diagram of the engine hood hinge from another perspective according to an embodiment of the present disclosure.
[0029] Figure numerals: 1. engine hood; 2. fixing seat; 21. first crush plate; 22. second crush plate; 3. rotating arm; 31. third crush plate; 32. fourth crush plate; 23. fixing plate; 231. reinforcement structure; 232. weight reduction hole; 4. front connecting rod; 5. rear connecting rod; 6. limiter. DETAILED DESCRIPTION
[0030] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0032] The hood hinge limiting structure is composed of a hinge and a limiting structure. During the pedestrian protection C-NCAP head collision, during the head impact simulation in the hinge area, the maximum value of the head injury value index HIC exceeded 1700, which did not meet the C-NCAP five-star performance development goal.
[0033] Based on this, the disclosed embodiment provides a fixing seat with a limiting structure. Through the comprehensive optimization of the cross-section and layout area of the limiting structure, the crushing force when the head impacts the engine hood is effectively reduced, so that the acceleration to which the head is subjected is reduced. Therefore, the maximum value of the head injury value index HIC in the hinge area is reduced to within 1500, meeting the C-NCAP five-star development goal.
[0034] Combination Figure 1 and Figure 2 As shown, the hood hinge provided by the embodiment of the present disclosure includes a fixed seat 2 and a rotating arm 3; the fixed seat 2 is used to connect with the vehicle body; the rotating arm 3 is used to connect with the hood 1, and the rotating arm 3 is rotatably connected with the fixed seat 2; wherein, one of the fixed seat 2 and the rotating arm 3 includes a limiting structure, and the limiting structure is used to abut against the other of the fixed seat 2 and the rotating arm 3; the limiting structure includes a collapsing portion, and the collapsing portion is used to deform when the hood 1 is subjected to an external force in the direction of the fixed seat 2. In the embodiment of the present disclosure, the collapsing portion is provided in the limiting structure of the fixed seat 2. When the hood 1 is subjected to an external force, the hood 1 will transfer the force to the rotating arm 3, so that the rotating arm 3 squeezes the collapsing portion, and the collapsing portion is deformed. When a collision occurs between a pedestrian and a vehicle, the collapsing portion collapses and deforms under the impact of the external force, absorbs part of the impact energy, and can buffer the force received by the head during the impact, thereby reducing the head injury value index HIC, reducing the acceleration of the hood hinge, and alleviating the impact on the pedestrian's head. The engine hood hinge provided by the embodiment of the present disclosure greatly reduces the possibility of collision damage to pedestrians' heads, and reduces pedestrian casualties in pedestrian-vehicle collision accidents.
[0035] In some specific embodiments, the limiting structure is arranged on the fixing seat 2, and the fixing seat 2 includes a fixing plate 23; the limiting part includes a first crush plate 21 and a second crush plate 22 connected to each other, and a first bending part is provided between the first crush plate 21 and the second crush plate 22, and the first crush plate 21 is connected to the fixing plate 23; the second crush plate 22 extends from the top of the first crush plate 21 toward one side of the first crush plate 21; the second crush plate 22 is used to abut against the rotating arm 3. When the engine hood 1 is subjected to external force, the engine hood 1 will transmit the force to the rotating arm 3, so that the rotating arm 3 squeezes the second crush plate 22, and the second crush plate 22 and the first crush plate 21 are deformed to absorb part of the impact energy, which can buffer the force received by the head during impact. There is a first bending part between the first crush plate 21 and the second crush plate 22, so that the limiting part is easy to deform from the connection part between the first crush plate 21 and the second crush plate 22, so as to better buffer the impact energy.
[0036] In some specific embodiments, the hood hinge further includes a third crush plate 31 and a fourth crush plate 32 connected to each other, a second bending portion is provided between the third crush plate 31 and the fourth crush plate 32, the third crush plate 31 is connected to the rotating arm 3; the fourth crush plate 32 extends from the bottom of the third crush plate 31 toward one side of the third crush plate 31; the fourth crush plate 32 is used to abut against the fixing seat 2. When the hood 1 is subjected to an external force, the hood 1 will transfer the force to the rotating arm 3, causing the third crush plate 31 and the fourth crush plate 32 of the rotating arm 3 to deform, absorb part of the impact energy, and buffer the force received when the head is impacted.
[0037] Optionally, the third crush plate 31 is connected to the rotating arm 3, and the fourth crush plate 32 is arranged opposite to the second crush plate 22. When the hood 1 is subjected to external force, the hood 1 will transfer the force to the rotating arm 3, so that the fourth crush plate 32 of the rotating arm 3 squeezes the second crush plate 22, and the fourth crush plate 32 and the second crush plate 22 will collapse and deform, absorbing part of the impact energy, and can buffer the force received when the head is impacted. There is a second bending portion between the third crush plate 31 and the fourth crush plate 32, so that the connection portion of the third crush plate 31 and the fourth crush plate 32 is easy to deform, thereby better buffering the impact energy.
[0038] Optionally, the first crush plate 21, the second crush plate 22, the third crush plate 31 and the fourth crush plate 32 may be provided with crush holes, so that the first crush plate 21, the second crush plate 22, the third crush plate 31 and the fourth crush plate 32 are deformed when subjected to force, so as to better buffer the impact energy. The number of crush holes may be one, two, three or more, and the shape of the crush holes may be square or circular.
[0039] The engine hood hinge provided by the disclosed embodiment has been verified by a physical experiment on the pedestrian head protection of a real vehicle. During the experiment, the limit structure can be crushed, and the simulation benchmarking accuracy is as high as 90%. The C-NCAP score in the hinge area is improved by 0.2 points, which can meet the C-NCAP 5-star development goal. After verification by the road test vehicle durability experiment, the durability index meets the standard.
[0040] In some specific embodiments, one of the second crush plate 22 and the fourth crush plate 32 is provided with a limit member 6, and the limit member 6 is used to abut against the other of the second crush plate 22 and the fourth crush plate 32. When the hood is buckled, the limit member 6 abuts against the second crush plate 22 or the fourth crush plate 32, thereby eliminating the assembly error, ensuring the function of the crushing part of the hood hinge, absorbing part of the impact energy, and cushioning the force applied to the head during impact.
[0041] In some specific embodiments, the second crush plate 22 is provided with a stopper 6, and the stopper 6 abuts against the fourth crush plate 32, which can improve the stability of the engine hood 1. When the engine hood 1 is subjected to external force, the engine hood 1 will transmit the force to the rotating arm 3, so that the fourth crush plate 32 of the rotating arm 3 squeezes the stopper 6 on the second crush plate 22, and the stopper 6 is subjected to the crushing force, squeezing the second crush plate 22, and the second crush plate 22 and the first crush plate 21 are deformed, absorbing part of the impact energy, and can buffer the force received when the head is impacted. The stopper 6 can be a stopper bolt.
[0042] In some specific embodiments, the limit member 6 includes a limit bolt, which is threadedly connected to one of the second crush plate 22 and the fourth crush plate 32. At least a portion of the limit bolt is located between the second crush plate 22 and the fourth crush plate 32, and the end of the limit bolt in the height direction abuts against the other of the second crush plate 22 and the fourth crush plate 32. Taking the threaded connection between the limit bolt and the second crush plate 22 as an example, when the engine hood is fastened, the limit bolt is rotated to ensure that the limit bolt abuts against the fourth crush plate 32, that is, the assembly error is eliminated, the function of the crush part of the engine hood hinge is ensured, and the stability can be improved.
[0043] In some specific embodiments, the height H1 of the first crush plate 21 satisfies: 11 mm ≤ H1 ≤ 13 mm; the width W1 of the first crush plate 21 along the X direction satisfies 11 mm ≤ W1 ≤ 13 mm; the first crush plate 21 is crushed to the limit state as much as possible to better absorb the impact energy and buffer the force received by the head during the impact. The X direction is the front-to-back direction of the vehicle.
[0044] And / or, the height H2 of the third crush plate 31 satisfies: 11mm≤H2≤13mm; the width W2 of the third crush plate 31 along the X direction satisfies 11mm≤W2≤13mm, so that the third crush plate 31 is collapsed to the limit state as much as possible to better absorb the impact energy and buffer the force exerted on the head during impact.
[0045] In some specific embodiments, the fixing plate 23 is provided with a weight-reducing hole 232, which can reduce the weight of the fixing plate 23 on the one hand, and on the other hand, the weight-reducing hole 232 can form a collapse hole, which is convenient for the fixing plate 23 to be crushed and deformed, so as to better absorb the impact energy and cushion the force exerted on the head during impact.
[0046] In some specific embodiments, the fixing plate 23 is provided with a raised or recessed reinforcement structure 231, which can improve the strength of the fixing plate 23, thereby improving the stability of the engine hood hinge to meet the rigidity requirements of the hinge.
[0047] In some specific embodiments, a front link 4 and a rear link 5 are further included, wherein two ends of the front link 4 are rotatably connected to the fixed seat 2 and the rotating arm 3 respectively, and two ends of the rear link 5 are rotatably connected to the fixed seat 2 and the rotating arm 3 respectively.
[0048] The front link 4 and the rear link 5 are arranged at intervals without crossing. The rotating arm 3, the front link 4, the fixing seat 2 and the rear link 5 are connected in sequence to form a parallelogram structure. The fixing seat 2 includes a limiting structure. When the hood 1 is subjected to an external force, the hood 1 will transfer the force to the rotating arm 3, so that the rotating arm 3 squeezes the collapsed part, and the collapsed part is deformed. When a collision occurs between a pedestrian and a vehicle, the collapsed part collapses and deforms under the impact of the external force, absorbs part of the impact energy, and can buffer the force received by the head during the impact, thereby reducing the head injury value index HIC, reducing the acceleration of the hood hinge, and alleviating the impact on the pedestrian's head.
[0049] In some specific embodiments, the material of the fixing seat 2 and the collapse part is SAPH440, 3 mm thick, and is made of high-strength steel material. The fixing seat 2 is connected to the front connecting rod 4 and the rear connecting rod 5 by bolts, and can be connected to the rotating arm 3 by a hinge rotation angle. The rotating arm 3 is fastened to the inner plate of the engine hood 1 by bolts. The fixing seat 2 is connected to the left front beam of the vehicle body by bolts.
[0050] In some specific embodiments, the fixing plate 23 of the hood hinge is connected to the front beam of the vehicle body by fasteners to facilitate disassembly and installation.
[0051] The hood assembly provided in the embodiment of the present disclosure includes the hood hinge provided in the embodiment of the present disclosure. The vehicle provided in the embodiment of the present disclosure includes the hood assembly provided in the embodiment of the present disclosure. Since the hood assembly or vehicle provided in the embodiment of the present disclosure has the same advantages as the hood hinge provided in the embodiment of the present disclosure, they will not be described in detail here.
[0052] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0053] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A hood hinge, characterized in that: include: A fixing seat, used for connecting with the vehicle body; A rotating arm, used to be connected to the engine hood, the rotating arm being rotatably connected to the fixing seat; Among them, one of the fixed seat and the rotating arm includes a limiting structure, which is used to abut against the other of the fixed seat and the rotating arm; the limiting structure includes a collapse portion, which is used to deform when the engine hood is subjected to an external force toward the fixed seat.
2. The hood hinge according to claim 1, characterized in that: The limiting structure is arranged on the fixing seat, and the fixing seat comprises a fixing plate; The collapse portion includes a first collapse plate and a second collapse plate connected to each other, a first bending portion is provided between the first collapse plate and the second collapse plate, and the first collapse plate is connected to the fixing plate; The second crusher plate extends from the top of the first crusher plate toward one side of the first crusher plate; The second collapse plate is used to abut against the rotating arm.
3. The hood hinge according to claim 2, characterized in that: The hood hinge further comprises a third crush plate and a fourth crush plate connected to each other, a second bending portion is provided between the third crush plate and the fourth crush plate, and the third crush plate is connected to the rotating arm; The fourth collapse plate extends from the bottom of the third collapse plate toward one side of the third collapse plate; The fourth collapse plate is used to abut against the fixing seat.
4. The hood hinge according to claim 3, characterized in that: One of the second crush plate and the fourth crush plate is provided with a stopper, and the stopper is used to abut against the other of the second crush plate and the fourth crush plate.
5. The hood hinge according to claim 4, characterized in that: The limiting member includes a limiting bolt, which is threadedly connected to one of the second collapse plate and the fourth collapse plate, at least a portion of the limiting bolt is located between the second collapse plate and the fourth collapse plate, and an end of the limiting bolt in the height direction abuts against the other of the second collapse plate and the fourth collapse plate.
6. The hood hinge according to claim 3, characterized in that: The height H1 of the first crush plate satisfies: 11 mm ≤ H1 ≤ 13 mm; the width W1 of the first crush plate along the X direction satisfies: 11 mm ≤ W1 ≤ 13 mm; And / or, a height H2 of the third collapse plate satisfies: 11 mm≤H2≤13 mm; a width W2 of the third collapse plate along the X direction satisfies: 11 mm≤W2≤13 mm.
7. The engine hood hinge according to any one of claims 1 to 6, characterized in that: It also includes a front connecting rod and a rear connecting rod, wherein two ends of the front connecting rod are rotatably connected to the fixing seat and the rotating arm respectively, and two ends of the rear connecting rod are rotatably connected to the fixing seat and the rotating arm respectively.
8. An engine hood assembly, characterized in that: The hood hinge comprises the hood hinge as claimed in any one of claims 1 to 7.
9. A vehicle, characterized in that: Includes the engine hood assembly as described in claim 8.
10. The vehicle according to claim 9, characterized in that The fixing plate (23) of the engine hood hinge is connected to the front beam of the vehicle body via a fastener.