A front hood structure with reduced wind resistance
By dynamically adjusting the angle of the hood using an electric telescopic rod and a swivel ball joint, the problem of the traditional hood's inability to be adjusted is solved, reducing wind resistance and improving the aerodynamic performance and range of new energy vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD
- Filing Date
- 2025-09-13
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional car hoods cannot adjust their angle according to driving conditions, which increases wind resistance at medium and high speeds, affecting the vehicle's energy consumption and range.
It adopts an electric telescopic rod and a ball joint structure to achieve active adjustment of the rear end angle of the front canopy. The front cabin and the front canopy are connected by a hinge to dynamically optimize the airflow transition.
It effectively reduces the vehicle's wind resistance, improves aerodynamic performance and range, and ensures the stability and structural durability of the hood during adjustment.
Smart Images
Figure CN224409396U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy vehicle manufacturing technology, and in particular to a front hood structure for reducing wind resistance. Background Technology
[0002] For new energy vehicles, air resistance is one of the key factors affecting the vehicle's power and economic performance, especially under medium and high speed driving conditions, where wind resistance directly affects the vehicle's energy consumption level and driving range.
[0003] As a crucial surface for airflow across the front of a vehicle, the hood's angle with the windshield and its ground clearance significantly impact the overall airflow distribution. Especially at medium to high speeds, airflow separation in the hood area can significantly increase wind resistance.
[0004] Traditional automotive hoods typically employ a rear-hinged design, opening towards the rear. Their opening angle and position are relatively fixed, making it impossible to adjust the hood angle according to driving conditions. Therefore, it is necessary to provide a hood structure that reduces wind resistance. Utility Model Content
[0005] In view of this, the present invention proposes a front hood structure to reduce wind resistance. It achieves active adjustment of the rear end angle of the front hood through an electric telescopic rod, which can dynamically optimize the airflow transition between the front hood and the windshield during vehicle operation, effectively reducing the overall vehicle wind resistance and solving the problem that existing car front hoods cannot adjust the angle of the front hood according to the driving conditions.
[0006] The technical solution of this utility model is implemented as follows:
[0007] This utility model provides a front hatch structure for reducing wind resistance, including a front engine compartment, a front hatch, hinges, an electrically telescopic mast, and a swivel ball joint.
[0008] The hinge is located between the front end of the front hatch and the top front side of the front engine compartment, and is used to rotatably connect the front hatch to the front engine compartment.
[0009] One end of the electric telescopic rod is hinged to the side of the forward cabin via a universal ball joint, and the other end is hinged to the bottom of the forward cabin cover via another universal ball joint.
[0010] The electric telescopic rod is used to drive the front hatch to rotate around the hinge, so as to adjust the opening angle of the rear end of the front hatch relative to the front cabin.
[0011] Based on the above technical solutions, preferably, there are two hinges, which are symmetrically arranged on the left and right sides of the front end of the hood.
[0012] On the basis of the above technical solutions, preferably, one end of the hinge is fixedly connected to the front engine compartment, and the other end is fixedly connected to the front hood.
[0013] On the basis of the above technical solutions, preferably, there are two electric telescopic rods, which are symmetrically arranged on the left and right sides inside the front engine compartment.
[0014] On the basis of the above technical solutions, preferably, the universal ball includes a bracket, a connecting rod and a ball head. Ball seats are fixed at both ends of the electric telescopic rod. Among them,
[0015] The brackets are fixed to both the side of the front engine compartment and the bottom of the front hood;
[0016] The connecting rod is rotatably arranged on the bracket, and the ball head is fixedly arranged at one end of the connecting rod;
[0017] The ball head is rotatably embedded in the ball seat.
[0018] On the basis of the above technical solutions, preferably, an avoidance groove is formed in the ball seat, and a ball groove is formed at the bottom of the avoidance groove. Among them,
[0019] The ball head is in clearance fit in the ball groove.
[0020] On the basis of the above technical solutions, preferably, the avoidance groove extends along the axial direction of the electric telescopic rod.
[0021] On the basis of the above technical solutions, preferably, one end of the connecting rod penetrates through the side end of the bracket and is rotatably connected. Among them,
[0022] Two flanges are provided on the side of the connecting rod, and the flanges are respectively located inside and outside the bracket.
[0023] On the basis of the above technical solutions, preferably, the bracket at the bottom of the front hood is L-shaped.
[0024] On the basis of the above technical solutions, preferably, the bracket on the side of the front engine compartment is shaped like a capital letter "J".
[0025] A front hood structure for reducing wind resistance according to the present utility model has the following beneficial effects compared with the prior art:
[0026] (1) The active adjustment of the angle of the rear end of the front hood is realized through the electric telescopic rod, which can dynamically optimize the air flow transition between the front hood and the front windshield during vehicle driving, and effectively reduce the wind resistance of the whole vehicle.
[0027] (2) By setting two symmetrical electric telescopic rods, the driving force is evenly distributed at the bottom of the front hatch, which effectively prevents the phenomenon of uneven load or tilting during the adjustment process, and ensures that the front hatch can be raised and lowered smoothly and reliably.
[0028] (3) The electric telescopic rod is made possible by the use of a universal ball joint to achieve multi-directional free rotation at both ends, which can adapt to the complex motion trajectory of the front hood during large-angle adjustment, avoid damage to the rod by bending moment, and improve transmission efficiency and structural adaptability. At the same time, by setting a clearance groove that extends along the axial direction of the electric telescopic rod, a clear motion guide path is provided for the connecting rod, which guides the relative displacement direction of the ball head and the ball seat during the telescopic rod extension and retraction, reduces lateral stress, reduces wear, and improves the service life of the connecting pair. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a perspective view of a front hood structure for reducing wind resistance according to this utility model;
[0031] Figure 2 This is a perspective view of a front hood structure for reducing wind resistance according to this utility model.
[0032] Figure 3 This is a bottom view of a front hood structure for reducing wind resistance according to this utility model;
[0033] Figure 4 This is a schematic diagram of the structure at the end of an electric telescopic pole;
[0034] Figure 5 This is a cross-sectional view of the end of an electric telescopic pole.
[0035] Figure 6 This is a schematic diagram of the output end of an electric telescopic pole;
[0036] Figure 7 This is a cross-sectional structural diagram of the output end of the electric telescopic pole;
[0037] Figure 8 A structural diagram showing the front hatch in both fully closed and fully open states;
[0038] In the diagram: 1. Forward engine compartment; 2. Forward hatch; 3. Hinge; 4. Electric telescopic mast; 5. Universal ball joint; 41. Ball seat; 51. Bracket; 52. Connecting rod; 53. Ball head; 411. Clearance groove; 412. Ball groove; 521. Flange. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0040] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.
[0041] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0044] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.
[0045] like Figure 1-8 As shown, the present invention provides a front hood structure for reducing wind resistance, including a front engine compartment 1, a front hood 2, a hinge 3, an electric telescopic rod 4, and a swivel ball 5.
[0046] The hinge 3 is located between the front end of the front hatch 2 and the top front side of the front engine compartment 1, and is used to rotatably connect the front hatch 2 to the front engine compartment 1. One end of the electric telescopic rod 4 is hinged to the side of the front engine compartment 1 via a universal ball joint 5, and the other end is hinged to the bottom of the front hatch 2 via another universal ball joint 5.
[0047] When the electric telescopic rod 4 extends or retracts, it drives the hood 2 to rotate around the hinge 3, thereby adjusting the opening angle of the rear end of the hood 2 relative to the front engine compartment 1. This structure allows for dynamic adjustment of the hood 2's attitude during vehicle operation, optimizing airflow transition between it and the windshield, significantly reducing overall vehicle drag, and improving the aerodynamic performance and range of new energy vehicles.
[0048] Based on the above structure, there are two hinges 3, symmetrically arranged on the left and right sides of the front end of the front canopy 2. One end of the hinge 3 is fixedly connected to the forward engine compartment 1, and the other end is fixedly connected to the front canopy 2. This symmetrical arrangement ensures that the front canopy 2 is subjected to uniform force during opening and angle adjustment, effectively improving the rotational stability of the structure, avoiding deformation or deflection caused by single-point support, ensuring smooth and synchronous movement of the front canopy 2, and enhancing the rigidity and durability of the overall structure.
[0049] Furthermore, there are two electric telescopic booms 4, symmetrically arranged on the left and right sides inside the front engine compartment 1. The dual-side drive design ensures that the driving force is evenly applied to both ends of the bottom of the front hatch 2, avoiding uneven loading, tilting, or jamming caused by unilateral force. This ensures that the front hatch 2 maintains a horizontal posture during lifting, lowering, and angle adjustment, resulting in smooth and reliable operation, improved control precision, and enhanced user experience.
[0050] Based on the above structure, the universal ball 5 includes a bracket 51, a connecting rod 52 and a ball head 53, and ball seats 41 are fixed at both ends of the electric telescopic rod 4.
[0051] The front engine compartment 1 and the bottom of the front hatch 2 are both fixed with brackets 51. A connecting rod 52 is rotatably mounted on the bracket 51, and a ball head 53 is fixedly mounted at one end of the connecting rod 52. The ball head 53 is rotatably embedded in a ball seat 41. This structure enables multi-degree-of-freedom rotation at both ends of the electric telescopic rod 4, adapting to the complex movement trajectory of the front hatch 2 during large-angle adjustment, effectively releasing assembly errors and motion interference, avoiding the electric telescopic rod 4 from bearing additional bending moments, improving transmission efficiency and structural adaptability, and extending service life.
[0052] Furthermore, the ball seat 41 has a clearance groove 411, and a ball groove 412 is formed on the bottom of the clearance groove 411. The ball head 53 is clearance-fitted within the ball groove 412. This fit structure allows the ball head 53 to rotate freely within the ball groove 412, achieving flexibility in angle adjustment, while effectively limiting its axial disengagement and providing a reliable limiting function. The clearance fit design also allows for a certain range of small displacements, alleviating stress concentration and improving the stability and durability of the connection pair.
[0053] Furthermore, the clearance groove 411 extends along the axial direction of the electric telescopic rod 4, forming an elongated oval shape, providing a clear guide path for the connecting rod 52 during movement. When the electric telescopic rod 4 extends or retracts, the clearance groove 411 guides the relative displacement direction between the ball head 53 and the ball seat 41, reducing lateral shear force and frictional wear, lowering movement resistance, ensuring a smooth adjustment process, and further improving the reliability and service life of the connection structure.
[0054] Based on the above structure, one end of the connecting rod 52 passes through the side end of the bracket 51 and is rotatably connected. Two flanges 521 are provided on the side of the connecting rod 52, located on the inner and outer sides of the bracket 51, respectively. In this structure, the flanges 521 axially limit the connecting rod 52, preventing axial movement or detachment from the bracket 51 during rotation, ensuring the stability and safety of the connection. Simultaneously, the rotatable connection method is simple in structure, easy to assemble, and flexible in movement, making it suitable for high-frequency adjustment scenarios.
[0055] Based on the above structure, the bracket 51 at the bottom of the front hatch 2 is L-shaped. Its horizontal section is fixed to the bottom of the front hatch 2, and its vertical section extends outward and is provided with connecting holes for installing the connecting rod 52. The L-shaped structure has good mechanical properties, can effectively transmit the push and pull force of the electric telescopic rod 4, and adapts to the internal space layout of the front cabin 1. It is stably installed, has reasonable stress distribution, and improves the strength and reliability of the overall structure.
[0056] Furthermore, the bracket 51 on the side of the forward engine compartment 1 is shaped like a "Z", with both ends fixed to the inner surface of the forward engine compartment 1, and an opening in the middle protruding part for connecting the connecting rod 52. This "Z" shaped structure has high bending and torsional stiffness, which can effectively withstand the load applied by the end of the electric telescopic rod 4 (the end away from its output end is the end), prevent local deformation or cracking of the forward engine compartment 1, and improve the overall structural strength and long-term stability of the forward engine compartment 1.
[0057] In the aforementioned structure, the driving and control technology of the electric telescopic pole 4 is a mature technology in this field, and the relevant control scheme can be fully inspired by existing technologies. For example, the invention disclosed in patent announcement number CN117022469B discloses an electric rear wing control method and device that adjusts the angle according to the vehicle body state. It discloses the control logic and system architecture for dynamically adjusting the angle of aerodynamic components based on parameters such as vehicle speed and driving mode. Moreover, the sensor configuration, control algorithm, and actuator coordination method disclosed therein can be reasonably transplanted by those skilled in the art and applied to the electric telescopic pole 4 in this application to achieve adaptive angle adjustment of the hood 2 under different driving conditions, such as automatically raising the rear angle when entering the wind resistance reduction mode, thereby optimizing the front airflow and reducing air resistance. For example... Figure 8 The front hatch 2 is shown in its fully closed and fully open states.
[0058] The method of using the front hood structure for reducing wind resistance according to this utility model is as follows:
[0059] A hinge 3 is provided between the front end of the front hatch 2 and the top front side of the front engine compartment 1 to rotatably connect the front hatch 2 to the front engine compartment 1. One end of the electric telescopic rod 4 is hinged to the side of the front engine compartment 1 via a ball joint 5, and the other end is hinged to the bottom of the front hatch 2 via another ball joint 5. When the electric telescopic rod 4 extends or retracts, it drives the front hatch 2 to rotate around the hinge 3, thereby adjusting the opening angle of the rear end of the front hatch 2 relative to the front engine compartment 1.
[0060] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A front hood structure that reduces wind resistance, characterized by: It includes a front engine compartment (1), a front hood (2), a hinge (3), an electric telescopic rod (4) and a universal ball (5). Among them, The hinge (3) is arranged between the front end of the front hood (2) and the top of the front side of the front engine compartment (1) for rotatably connecting the front hood (2) to the front engine compartment (1); One end of the electric telescopic rod (4) is hinged to the side of the front engine compartment (1) through one universal ball (5), and the other end is hinged to the bottom of the front hood (2) through another universal ball (5); The electric telescopic rod (4) is used to drive the front hood (2) to rotate around the hinge (3) to adjust the opening angle of the rear end of the front hood (2) relative to the front engine compartment (1).
2. A front hood structure with reduced wind resistance according to claim 1, characterized in that: There are two hinges (3), which are symmetrically arranged on the left and right sides of the front end of the front hood (2).
3. A front hood structure with reduced wind resistance according to claim 1, characterized in that: One end of the hinge (3) is fixedly connected to the front engine compartment (1), and the other end is fixedly connected to the front hood (2).
4. The front hood structure for reducing wind resistance as described in claim 1, characterized in that: There are two electric telescopic rods (4), which are symmetrically arranged on the left and right sides inside the front engine compartment (1).
5. The front hood structure for reducing wind resistance as described in claim 1, characterized in that: The universal ball (5) includes a bracket (51), a connecting rod (52) and a ball head (53). Ball seats (41) are fixed at both ends of the electric telescopic rod (4). Among them, The brackets (51) are fixed on both the side of the front engine compartment (1) and the bottom of the front hood (2); The connecting rod (52) is rotatably arranged on the bracket (51), and the ball head (53) is fixedly arranged at one end of the connecting rod (52); The ball head (53) is rotatably embedded in the ball seat (41).
6. The front hood structure for reducing wind resistance as described in claim 5, characterized in that: A relief groove (411) is formed in the ball seat (41), and a ball groove (412) is formed in the bottom of the relief groove (411). Among them, The ball head (53) is in clearance fit in the ball groove (412).
7. A front hood structure for reducing wind resistance as described in claim 6, characterized in that: The relief groove (411) extends along the axial direction of the electric telescopic rod (4).
8. A front hood structure for reducing wind resistance as described in claim 5, characterized in that: One end of the connecting rod (52) penetrates through the side end of the bracket (51) and is rotatably connected. Among them, Two flanges (521) are arranged on the side of the connecting rod (52), and the flanges (521) are respectively located inside and outside the bracket (51).
9. A front hood structure for reducing wind resistance as described in claim 5, characterized in that: The bracket (51) at the bottom of the front hood (2) is L-shaped.
10. A front hood structure for reducing wind resistance as described in claim 5, characterized in that: The bracket (51) on the side of the front engine compartment (1) is shaped like a capital C.