Hood hinge assembly and vehicle

Abstract

This application relates to the field of automotive component technology, disclosing a hood hinge device and a vehicle. It includes a fixed arm for mounting on the vehicle body, and a movable arm comprising a first arm segment, a transition arm segment, and a second arm segment sequentially connected along a first direction. The first arm segment is rotatably connected to the fixed arm, and the second arm segment is fixedly connected to the hood. One end of the transition arm segment is connected to the first arm segment, and the other end is connected to the second arm segment. The thickness of the second arm segment along a second direction is less than the thickness of the first arm segment along a third direction. The second direction is perpendicular to the first direction, and the third direction is perpendicular to both the second and first directions. The hood hinge device provided by this application can reduce structural strength redundancy and lower manufacturing costs.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a hood hinge device and a vehicle. Background Technology

[0002] A hood hinge is a component used to rotatably connect the hood to the vehicle body. The hood hinge consists of a fixed arm and a movable arm, which are rotatably connected. The fixed arm is fixed to the vehicle body, while the movable arm is connected to the hood. The hood and movable arm can rotate relative to the fixed arm, thus allowing the hood to rotate relative to the vehicle body.

[0003] However, the structural strength of the hood hinge device in the aforementioned related technologies is redundant, and the manufacturing cost is relatively high. Utility Model Content

[0004] In view of this, the present application provides a hood hinge device and a vehicle to solve the technical problem that the structural strength of the hood hinge device in the above-mentioned related technologies is redundant and the manufacturing cost is relatively high.

[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0006] A first aspect of this application provides a hood hinge device, comprising:

[0007] Fixed arm, used for mounting on the vehicle body;

[0008] The movable arm includes a first arm segment, a transition arm segment, and a second arm segment connected sequentially along a first direction;

[0009] The first arm segment is rotatably connected to the fixed arm, the second arm segment is fixedly connected to the machine cover, one end of the transition arm segment is connected to the first arm segment, and the other end of the transition arm segment is connected to the second arm segment;

[0010] The thickness of the second arm segment along the second direction is less than the thickness of the first arm segment along the third direction. The second direction is perpendicular to the first direction, and the third direction is perpendicular to both the second direction and the first direction.

[0011] The hood hinge device provided in this application embodiment forms a basic support by connecting the fixed arm to the vehicle body, while the movable arm adopts a three-section split structure to expand spatial adaptability. The rotational connection between the first arm section and the fixed arm realizes the hinge opening and closing function, the second arm section directly bears the hood load, and the transition arm section connects the two arm sections and transmits stress. By designing the thickness of the second arm section along the second direction to be less than the thickness of the first arm section along the third direction, a differentiated thickness distribution is formed in two orthogonal dimensions. This unequal thickness design allows the second arm section to reduce material usage while meeting the hood connection strength requirements, while the thickened design of the first arm section in the rotation axis (third direction) strengthens the torsional stiffness of the hinge rotation part. The differentiated spatial thickness configuration in the two directions synergistically solves the contradiction between insufficient stiffness and weight redundancy in large-size movable arms, thereby solving the problem of strength redundancy in the hood hinge device and reducing the manufacturing cost of the hood hinge device.

[0012] In some embodiments of this application, the movable arm is a forged structural component.

[0013] In some embodiments of this application, along the first direction, the size of the movable arm is greater than or equal to 300 mm and less than or equal to 400 mm;

[0014] Along the second direction, the size of the movable arm is greater than or equal to 90 mm and less than or equal to 150 mm.

[0015] In some embodiments of this application, the fixed arm has a first shaft hole extending along the third direction, and the first arm segment has a second shaft hole extending along the third direction and cooperating with the first shaft hole.

[0016] The hood hinge device also includes a pivot shaft, which passes through the first shaft hole and the second shaft hole, and the movable arm rotates about the pivot shaft relative to the fixed arm.

[0017] Along the third direction, the thickness of the first arm segment where the second shaft hole is located is greater than or equal to 10 mm and less than or equal to 15 mm.

[0018] In some embodiments of this application, the second arm segment has a plurality of first mounting holes extending along the second direction;

[0019] The hood hinge device also includes a plurality of connectors, and the first mounting hole is provided in a one-to-one correspondence with the connector. The connector is used to pass through the first mounting hole and install the second arm section onto the hood.

[0020] Along the second direction, the thickness of the second arm segment where the first mounting hole is located is greater than or equal to 8 mm and less than or equal to 12 mm.

[0021] In some embodiments of this application, along a third direction, the width of the cross section of the transition arm segment along the third direction is greater than the thickness of the first arm segment (210);

[0022] The width of the cross section of the transition arm segment (220) along the third direction is greater than or equal to 12 mm and less than or equal to 16 mm.

[0023] In some embodiments of this application, the length of the cross section of the transition arm segment along the third direction is greater than or equal to 18 mm and less than or equal to 22 mm.

[0024] In some embodiments of this application, the hood hinge device further includes a mounting portion;

[0025] The mounting portion is located on the side of the second arm segment facing away from the first arm segment;

[0026] The mounting portion has a second mounting hole extending in the third direction, the second mounting hole being used to allow the ball head pin to pass through and connect the mounting portion to the auxiliary support rod.

[0027] In some embodiments of this application, along the third direction, the thickness of the mounting portion is less than the thickness of the second arm segment (230);

[0028] The thickness of the mounting part (300) is greater than or equal to 4 mm and less than or equal to 6 mm.

[0029] A second aspect of this application provides a vehicle including a hood, a body, and a hood hinge device as described above.

[0030] The hood and the vehicle body are rotatably connected by the hood hinge device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a hood hinge device provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of a movable arm provided in an embodiment of this application;

[0033] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0034] Figure 4 for Figure 2 Cross-sectional view at point BB;

[0035] Figure 5 for Figure 2 Cross-sectional view at point C;

[0036] Figure 6 for Figure 2 Cross-sectional view at point DD.

[0037] Figure label:

[0038] 100. Fixed arm;

[0039] 110. First shaft hole;

[0040] 200. Movable arm;

[0041] 210. First arm segment; 220. Transition arm segment; 230. Second arm segment;

[0042] 211, Second shaft hole; 231, First mounting hole;

[0043] 300. Installation Department;

[0044] 310. Second mounting hole. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0046] In the embodiments of this application, 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0047] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0048] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0049] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0050] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0051] The hood hinge device in the aforementioned related technologies has redundant structural strength and relatively high manufacturing cost. This problem arises because the existing technology uses a nearly uniform thickness design for each area of ​​the movable arm, without making corresponding specific adjustments based on the strength and torsional resistance requirements of each installation position on the movable arm. This results in some areas of the movable arm having excessive thickness and redundant strength, thus increasing manufacturing costs.

[0052] To address the aforementioned issues, this application provides a hood hinge device and a vehicle. The hood hinge device is connected to the vehicle body via a fixed arm to form a basic support, while the movable arm adopts a three-section split structure to expand spatial adaptability. The rotational connection between the first arm section and the fixed arm enables the hinge opening and closing function. The second arm section directly bears the hood load, and the transition arm section connects the two arm sections and transmits stress. By designing the thickness of the second arm section along the second direction to be less than the thickness of the first arm section along the third direction, a differentiated thickness distribution is formed in two orthogonal dimensions. This unequal thickness design allows the second arm section to reduce material usage while meeting the hood connection strength requirements, while the increased thickness of the first arm section along the rotation axis (third direction) strengthens the torsional stiffness of the hinge rotation part. The differentiated spatial thickness configuration in the two directions synergistically solves the contradiction between insufficient stiffness and weight redundancy in large-size movable arms, thereby resolving the problem of redundant strength in the hood hinge device and reducing the manufacturing cost of the hood hinge device.

[0053] The hood hinge device and vehicle provided in this application are described below with reference to the accompanying drawings and specific embodiments.

[0054] Reference Figure 1 and Figure 2This application provides a hood hinge device, which may include a fixed arm 100 and a movable arm 200.

[0055] The fixed arm 100 is for mounting on the vehicle body. The movable arm 200 may include a direction along a first direction (e.g., Figure 2 The first arm segment 210, the transition arm segment 220, and the second arm segment 230 are sequentially connected in the X direction. The first direction refers to the length extension direction of the movable arm 200. The transition arm segment 220 refers to the intermediate region connecting the two functional arm segments, and can be implemented using a gradually changing cross-section structure to achieve stress transfer transition between regions of different thicknesses.

[0056] The first arm segment 210 is rotatably connected to the fixed arm 100, the second arm segment 230 is fixedly connected to the cover, one end of the transition arm segment 220 is connected to the first arm segment 210, and the other end of the transition arm segment 220 is connected to the second arm segment 230. The second arm segment 230 is along a second direction (e.g., Figure 2 The thickness of the first arm segment 210 in the Z direction is less than that in the third direction (e.g., along the Z direction). Figure 3 The thickness in the Y direction is such that the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the second and first directions.

[0057] Specifically, the fixed arm 100 is bolted to the vehicle body, forming a stable support base. The first arm segment 210 of the movable arm 200 forms a rotating pair with the fixed arm 100 via a pivot mechanism, and has a larger thickness in the third direction to resist torsional torque during opening and closing. The second arm segment 230 is connected to the hood via bolts, and its thickness is reduced in the second direction to reduce material redundancy in this area while ensuring sufficient bending stiffness. The transition arm segment 220 connects the two functional areas through a gradually changing cross-section design, allowing stress to be smoothly transferred from the high torque area to the high bending moment area. The differentiated thickness configuration in three orthogonal directions allows for precise matching of material distribution with load type, achieving lightweighting while maintaining overall stiffness.

[0058] This application provides a hood hinge assembly. A fixed arm 100 connects to the vehicle body to form a basic support, while a movable arm 200 employs a three-section split structure to expand spatial adaptability. The first arm segment 210's rotatable connection with the fixed arm 100 enables the hinge's opening and closing function. The second arm segment 230 directly bears the hood load, and a transition arm segment 220 connects the two arm segments and transmits stress. By designing the thickness of the second arm segment 230 along the second direction to be less than the thickness of the first arm segment 210 along the third direction, a differentiated thickness distribution is formed in two orthogonal dimensions. This unequal thickness design allows the second arm segment 230 to reduce material usage while meeting the hood connection strength requirements, while the increased thickness of the first arm segment 210 along the rotation axis (third direction) strengthens the torsional stiffness of the hinge's rotating parts. This differentiated spatial thickness configuration in two directions collaboratively resolves the contradiction between insufficient stiffness and weight redundancy in the large movable arm 200, thereby solving the problem of redundant strength in the hood hinge assembly and reducing the manufacturing cost of the hood hinge assembly.

[0059] Reference Figure 1 and Figure 2 In some embodiments, the movable arm 200 is a forged structural component.

[0060] Thus, by designing the movable arm 200 as a forged structural component, the forming process of the movable arm 200 is fundamentally changed. Compared with traditional sheet metal stamping, forging allows the metal material to form a dense fibrous streamline structure under high temperature and pressure, thereby significantly improving the overall mechanical strength and deformation resistance of the movable arm 200. This process characteristic allows the movable arm 200 to maintain sufficient rigidity even with increased size, avoiding strength reduction problems caused by insufficient material ductility or loose structure. The one-piece forming characteristic of forged structural components also eliminates structural defects such as seams and weak points in bending that may occur in the stamping process, further enhancing the stability of the movable arm 200 under complex stress conditions.

[0061] In some embodiments, the fixed arm 100 may also be a forged structural member.

[0062] Reference Figure 1 and Figure 2 In some embodiments, along the first direction, the dimensions of the movable arm 200 (e.g.) Figure 1 L1 in the figure is greater than or equal to 300 mm and less than or equal to 400 mm. For example, along the first direction, the size of the movable arm 200 can be one of 300 mm, 320 mm, 340 mm, 350 mm, 370 mm, and 390 mm. Alternatively, the size of the movable arm 200 can be any value within the range of greater than or equal to 300 mm and less than or equal to 400 mm.

[0063] Along the second direction, the dimensions of the movable arm 200 (e.g.) Figure 1The L2 in the second direction is greater than or equal to 90 mm and less than or equal to 150 mm. For example, along the second direction, the size of the movable arm 200 can be one of 90 mm, 95 mm, 100 mm, 110 mm, 120 mm, and 140 mm. Alternatively, the size of the movable arm 200 can be any value within the range of greater than or equal to 90 mm and less than or equal to 150 mm.

[0064] In this way, by controlling the dimension of the movable arm 200 in the first direction to a range of greater than or equal to 300 mm and less than or equal to 400 mm, the movable arm 200 has sufficient extension length in the longitudinal direction. This allows it to cross obstacle areas by extending the arm structure, even when the hood hinge mounting area is occupied by other components, providing a remote mounting point for the hood. Simultaneously, limiting the dimension in the second direction to a range of greater than or equal to 90 mm and less than or equal to 150 mm ensures that the movable arm 200 has sufficient bending stiffness in the height direction while avoiding spatial interference with surrounding components due to excessive size. This coordinated limitation of the dimensional range in both directions allows the movable arm 200 to overcome the installation limitations of traditional small-sized hinges in complex layout environments while maintaining structural compactness, enabling reliable installation of the hood hinge device in confined spaces.

[0065] Reference Figure 2 and Figure 3 In some embodiments, the fixed arm 100 has a first shaft hole 110 extending in a third direction, and the first arm segment 210 has a second shaft hole 211 extending in a third direction and cooperating with the first shaft hole 110.

[0066] The hood hinge device may also include a pivot shaft, which passes through a first pivot hole 110 and a second pivot hole 211, and the movable arm 200 rotates about the pivot shaft relative to the fixed arm 100.

[0067] Along a third direction, the thickness of the first arm segment 210 where the second shaft hole 211 is located (e.g.) Figure 3 The value of h1 is greater than or equal to 10 mm and less than or equal to 15 mm.

[0068] In this way, the movable arm 200 achieves stable rotation around the pivot by engaging the pivot holes extending along a third direction on the fixed arm 100 and the movable arm 200. The design of the first pivot hole 110 and the second pivot hole 211 extending along a third direction ensures that the pivot is aligned with the force direction of the hinge device during installation, avoiding localized stress concentration caused by directional deviation. The pivot passes through the two pivot holes, forming a rigid connection between the movable arm 200 and the fixed arm 100, ensuring structural stability during rotation.

[0069] The thickness of the first arm segment 210 in the area of ​​the second shaft hole 211 is controlled between 10mm and 15mm. This ensures the strength required for this area to bear the rotational load, while avoiding material waste due to excessive thickness. Thus, the weight and cost are optimized while meeting the stiffness requirements of the hinge device.

[0070] Reference Figure 2 and Figure 4 In some embodiments, the second arm segment 230 has a plurality of first mounting holes 231 extending in a second direction.

[0071] The hood hinge device may also include multiple connectors, with the first mounting hole 231 corresponding to each connector. The connector is used to pass through the first mounting hole 231 and install the second arm section 230 onto the hood.

[0072] Along the second direction, the thickness of the second arm segment 230 where the first mounting hole 231 is located (e.g.) Figure 4 (h2) is greater than or equal to 8 mm and less than or equal to 12 mm. For example, the thickness of the second arm segment 230 where the first mounting hole 231 is located can be one of 8 mm, 9 mm, 10 mm, 11 mm and 12 mm, or it can be any value within the range of greater than or equal to 8 mm and less than or equal to 12 mm.

[0073] The connector refers to the fastening element used to achieve mechanical connection. Specifically, it can be achieved using hexagonal flange bolts with anti-loosening washers, forming a stable connection through axial preload. The thickness range of the second arm section 230 refers to the material thickness along the force direction in the area where the mounting hole is located. Specifically, it can be achieved by controlling the forming allowance through forging process, ensuring the crush resistance of the hole wall while controlling material consumption.

[0074] This technical solution improves the connection stability between the second arm segment 230 and the hood by setting multiple first mounting holes 231 extending along the second direction, enabling the connector to distribute the load evenly along the force direction. Limiting the thickness of the second arm segment 230 in the area where the first mounting holes 231 are located to between 8mm and 12mm ensures that the material around the mounting holes has sufficient shear strength and deformation resistance, while controlling the upper limit avoids material waste due to excessive thickness. The lower limit of 8mm prevents local crushing or cracking around the holes caused by excessively thin walls under the preload of the connector, while the upper limit of 12mm is based on the actual load calculation results of the hood hinge device, optimizing material costs while meeting strength requirements.

[0075] Reference Figure 2 , Figure 3 and Figure 5 In some embodiments, along the third direction, the width of the cross-section of the transition arm segment 220 along the third direction (e.g.) Figure 5The thickness of the middle section (h3) can be greater than that of the first arm segment 210 (e.g., h3). Figure 3 The thickness of the movable arm 200 is set at different positions (h1), which helps to reduce the material cost of the movable arm 200.

[0076] Along the third direction, the width of the cross section of the transition arm segment 220 along the third direction is greater than or equal to 12 mm and less than or equal to 16 mm. For example, the width of the cross section of the transition arm segment 220 along the third direction can be one of 12 mm, 13 mm, 14 mm, 15 mm and 16 mm, or it can be any value within the range of greater than or equal to 12 mm and less than or equal to 16 mm.

[0077] This technical solution achieves a balance between structural strength and material cost by limiting the cross-sectional width range of the transition arm segment 220 in the third direction. As a key area connecting the first arm segment 210 and the second arm segment 230, the cross-sectional width of the transition arm segment 220 is controlled between 12mm and 16mm. This avoids the risk of bending or breaking under stress due to excessive width, while also preventing material waste and increased costs due to excessive width.

[0078] Reference Figure 2 and Figure 5 In some embodiments, along the third direction, the length of the cross-section of the transition arm segment 220 along the third direction (e.g.) Figure 5 (h4) is greater than or equal to 18 mm and less than or equal to 22 mm. For example, the length of the section of the transition arm segment 220 along the third direction can be one of 18 mm, 19 mm, 20 mm, 21 mm and 22 mm, or it can be any value within the range of greater than or equal to 18 mm and less than or equal to 22 mm.

[0079] This technical solution balances strength and material economy in its structure by limiting the length range of the transition arm segment 220 along a third-direction cross section. As a key force-transmitting structure connecting the first arm segment 210 and the second arm segment 230, the length of the transition arm segment 220 is controlled within a range of greater than or equal to 18 mm and less than or equal to 22 mm. This ensures that the area has sufficient flexural section modulus to prevent bending fracture caused by stress concentration, while avoiding material waste due to excessive cross-sectional dimensions. This length range is set based on the overall stress analysis of the movable arm 200, ensuring that the transition arm segment 220, when bearing the combined load generated by the opening and closing of the hood, meets strength requirements while also matching the thickness parameters of the adjacent first arm segment 210 and second arm segment 230, achieving a lightweight design for the overall structure.

[0080] Reference Figure 2 and Figure 6In some embodiments, the hood hinge assembly may further include a mounting portion 300. The mounting portion 300 is disposed on the side of the second arm segment 230 opposite to the first arm segment 210, and the mounting portion 300 has a second mounting hole 310 extending in a third direction for allowing a ball joint pin to pass through and connecting the mounting portion 300 to an auxiliary support rod.

[0081] The mounting section 300 refers to a plate-like structure that is fixed to the end of the second arm section 230 and extends outward. It can be achieved by welding or integral molding. Its function is to provide an independent connection point for the auxiliary support rod.

[0082] By providing a mounting portion 300 on the side of the second arm segment 230 facing away from the first arm segment 210, the auxiliary support rod can form a spatially separate connection with the hinge device via a ball joint pin, avoiding interference with the rotational movement between the movable arm 200 and the fixed arm 100. The mounting portion 300 has a second mounting hole 310 extending along a third direction. Utilizing the geometric characteristics that the third direction is perpendicular to the first and second directions, the axial mounting direction of the ball joint pin is aligned with the thickness direction of the movable arm 200, ensuring both the installation strength of the ball joint pin and matching the force direction of the auxiliary support rod with the motion plane of the hinge device.

[0083] By connecting the mounting part 300 with the auxiliary support rod, part of the load when the hood is opened can be transferred to the auxiliary support rod, thereby reducing the torque borne by the movable arm 200 alone and improving the load-bearing capacity and stability of the entire hood hinge device.

[0084] Reference Figure 2 and Figure 6 In some embodiments, along a third direction, the thickness of the mounting portion 300 (e.g.) Figure 6 The thickness of the middle section (h5) is less than that of the second arm section (230), so that the thickness of the movable arm 200 is not equal at different positions, which helps to reduce the material cost of the movable arm 200.

[0085] The thickness of the mounting portion (300) is greater than or equal to 4 mm and less than or equal to 6 mm. For example, the thickness of the mounting portion 300 can be one of 4 mm, 4.5 mm and 5 mm, or it can be any value within the range of greater than or equal to 4 mm and less than or equal to 6 mm.

[0086] By limiting the thickness range of the mounting section 300 in the third direction, a balance is struck between the structural strength and material cost of the mounting section 300. As a key component connecting the auxiliary support rod, a thickness of less than 4mm in the mounting section 300 may result in insufficient connection strength, making it unable to withstand the load transmitted by the auxiliary support rod; while a thickness exceeding 6mm would cause material redundancy, increasing the overall weight and manufacturing cost of the hinge. Controlling the thickness of the mounting section 300 within the range of greater than or equal to 4mm and less than or equal to 6mm ensures the reliability of the connection between the ball joint pin and the second mounting hole 310, while avoiding material waste through precise dimensional design, meeting the combined requirements of lightweight and cost control in the hood hinge device. This thickness range is an optimized value derived from forging process characteristics and stress analysis of the auxiliary support rod, meeting the mechanical performance requirements of the hinge during dynamic opening and closing.

[0087] This application also provides a vehicle, which may include a hood, a body, and the aforementioned hood hinge device, wherein the hood and the body are rotatably connected by the hood hinge device.

[0088] In this way, by using the aforementioned hood hinge device, the vehicle can achieve a lightweight design while ensuring the connection strength between the hood and the vehicle body.

[0089] In some embodiments, the vehicle may be a gasoline-powered vehicle, or it may be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle may also be any vehicle equipped with a battery.

[0090] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A lid hinge device, characterized by include: Fixed arm (100) for mounting on the vehicle body; The movable arm (200) includes a first arm segment (210), a transition arm segment (220), and a second arm segment (230) connected sequentially along a first direction; The first arm segment (210) is rotatably connected to the fixed arm (100), the second arm segment (230) is fixedly connected to the cover, one end of the transition arm segment (220) is connected to the first arm segment (210), and the other end of the transition arm segment (220) is connected to the second arm segment (230); The thickness of the second arm segment (230) along the second direction is less than the thickness of the first arm segment (210) along the third direction. The second direction is perpendicular to the first direction, and the third direction is perpendicular to both the second direction and the first direction.

2. The lid hinge device according to claim 1, characterized in that The movable arm (200) is a forged structural component.

3. The lid hinge device according to claim 2, characterized in that Along the first direction, the size of the movable arm (200) is greater than or equal to 300 mm and less than or equal to 400 mm; Along the second direction, the size of the movable arm (200) is greater than or equal to 90 mm and less than or equal to 150 mm.

4. The lid hinge device of claim 1, wherein The fixed arm (100) has a first shaft hole (110) extending along the third direction, and the first arm segment (210) has a second shaft hole (211) extending along the third direction and cooperating with the first shaft hole (110); The hood hinge device also includes a pivot shaft, which passes through the first shaft hole (110) and the second shaft hole (211), and the movable arm (200) rotates about the pivot shaft relative to the fixed arm (100). Along the third direction, the thickness of the first arm segment (210) where the second shaft hole (211) is located is greater than or equal to 10 mm and less than or equal to 15 mm.

5. The lid hinge device of claim 1, wherein The second arm segment (230) has a plurality of first mounting holes (231) extending along the second direction; The hood hinge device also includes a plurality of connectors, and the first mounting hole (231) is provided in a one-to-one correspondence with the connector. The connector is used to pass through the first mounting hole (231) and install the second arm segment (230) on the hood. Along the second direction, the thickness of the second arm segment (230) where the first mounting hole (231) is located is greater than or equal to 8 mm and less than or equal to 12 mm.

6. The lid hinge device of claim 1, wherein Along the third direction, the width of the cross section of the transition arm segment (220) along the third direction is greater than the thickness of the first arm segment (210); The width of the cross section of the transition arm segment (220) along the third direction is greater than or equal to 12 mm and less than or equal to 16 mm.

7. The lid hinge device according to claim 6, characterized in that Along the third direction, the length of the cross section of the transition arm segment (220) along the third direction is greater than or equal to 18 mm and less than or equal to 22 mm.

8. The lid hinge device of claim 1, wherein The hood hinge device also includes a mounting part (300); The mounting part (300) is disposed on the side of the second arm segment (230) facing away from the first arm segment (210); The mounting portion (300) has a second mounting hole (310) extending in the third direction, the second mounting hole (310) for allowing the ball head pin to pass through and connecting the mounting portion (300) to the auxiliary support rod.

9. The lid hinge device according to claim 8, characterized in that Along the third direction, the thickness of the mounting portion (300) is less than the thickness of the second arm segment (230); The thickness of the mounting part (300) is greater than or equal to 4 mm and less than or equal to 6 mm.

10. A vehicle characterized by comprising: Includes a hood, a body, and a hood hinge device as described in any one of claims 1 to 9; The hood and the vehicle body are rotatably connected by the hood hinge device.

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