Front hood assembly fixture

Abstract

This application provides a front hood assembly fixture, relating to the field of vehicle assembly technology. It includes a fixture frame, a positioning component, and two tightening components. The positioning component positions the front hood to the body-in-white, and the two tightening components are respectively disposed on both sides of the fixture frame. When the front hood is closed, a portion of the tightening component is located outside the front hood. The tightening components are configured to tighten the bolts connecting the front hood and the hinge when the front hood is closed. The fixture frame provides a stable foundation for the positioning and tightening components, and the positioning component precisely positions the front hood to the body-in-white, meeting the matching requirements of the front hood. Furthermore, the tightening components on both sides of the fixture frame can adapt to assembly requirements in different directions for the front hood. The tightening components can directly act on the bolts when the front hood is closed, avoiding the problems of unstable front hood assembly and large cumulative errors caused by the hinge being open in traditional methods, thus improving the stability and accuracy of the front hood assembly.

Description

Technical Field

[0001] This application relates to vehicle assembly technology, and more particularly to a front hood assembly fixture. Background Technology

[0002] With the increasing number of new energy vehicles, most models have a front grille that is surrounded by blocks. This requires matching in multiple assembly directions of the front grille, as well as alignment of the rear corners of the front grille with the side panels and fenders. Therefore, the assembly precision requirements for the front grille are relatively high.

[0003] In related technologies, when assembling the front cover onto the body-in-white on the welding assembly line, the traditional method requires unfolding the hinges, then tightening the front cover to the hinges, closing the front cover, checking the gap between the side panel or fender and the front cover, and measuring whether the gap is controlled within the acceptable range. If it is not acceptable, the front cover needs to be opened again and the above operation is repeated until it is acceptable.

[0004] However, due to the influence of the hinge's own structure and envelope, the hinge has poor stability after unfolding, resulting in poor stability when the front cover is installed on the hinge, which affects the assembly accuracy of the front cover. Utility Model Content

[0005] In view of this, this application provides a front cover assembly fixture that can improve the stability of the front cover during assembly and enhance the assembly accuracy of the front cover.

[0006] To achieve the above objectives, this application provides a front cover assembly fixture, which adopts the following technical solution:

[0007] This application provides a front hood mounting fixture for mounting a front hood to a hinge of a body-in-white, comprising:

[0008] Fixture frame;

[0009] A positioning component is movably disposed on the fixture frame, the positioning component being used to position the front cover to the body-in-white;

[0010] Two clamping components are respectively disposed on both sides of the fixture frame;

[0011] The tightening assembly is located outside the front cover when the front cover is closed. The tightening assembly is configured to tighten the bolts connecting the front cover and the hinge when the front cover is closed.

[0012] In one possible implementation, the front cover assembly provided in this application includes a fastening component comprising a transmission member disposed on the assembly frame;

[0013] With the front cover closed, the first end of the transmission component is located between the front cover and the body-in-white, and the second end of the transmission component is located outside the front cover;

[0014] The first end of the transmission component is used to tighten the bolt, and the second end of the transmission component is used to connect to a wrench.

[0015] In one possible implementation, the front cover assembly fixture provided in this application includes a transmission component comprising a first part, a bent part, and a second part connected in sequence.

[0016] The first part has the first end, and the second part has the second end;

[0017] The bent portion extends vertically upwards;

[0018] In the closed state of the front cover, a portion of the second part is located outside the front cover, or both the second part and the bent portion are located outside the front cover.

[0019] In one possible implementation, the front cover assembly provided in this application includes a transmission component comprising a housing and at least one transmission assembly.

[0020] The housing has a receiving cavity, the transmission assembly is located in the receiving cavity, and the input end of the transmission assembly is the second end of the transmission member, and the output end of the transmission assembly is the first end of the transmission member;

[0021] The transmission group is either a belt transmission group or a gear transmission group, and each of the transmission groups is connected in a transmission manner.

[0022] In one possible implementation, the front cover assembly provided in this application further includes a connector having a connecting portion and an extension portion;

[0023] The connecting part is connected to the fixture frame, and the extension part connects the connecting part and the transmission component;

[0024] There is an angle between the connecting part and the extension part.

[0025] In one possible implementation, the front cover assembly provided in this application includes a positioning component comprising a first positioning element and a second positioning element;

[0026] The first positioning member is disposed on the fixture frame, and the first positioning member is used to extend toward the body-in-white and connect to the first positioning point of the body-in-white.

[0027] The second positioning member is disposed on the fixture frame, and the second positioning member extends toward the front cover and is connected to the second positioning point of the front cover.

[0028] In one possible implementation, the front cover assembly fixture provided in this application further includes a connecting plate;

[0029] Both the first positioning element and the second positioning element are disposed on the connecting plate, and the connecting plate is movably disposed on the fixture frame.

[0030] In one possible implementation, the front cover assembly fixture provided in this application has at least two positioning components distributed on opposite sides of the fixture frame.

[0031] In one possible implementation, the front cover assembly fixture provided in this application further includes a plurality of first support members and a plurality of second support members;

[0032] The first support member is disposed on the fixture frame, and a plurality of the first support members are distributed on opposite sides of the fixture frame. The first support member is used to abut against the body-in-white.

[0033] The second support member is disposed on the fixture frame, and a plurality of the second support members are distributed on opposite sides of the fixture frame. The second support members are used to abut against the front cover.

[0034] In one possible implementation, the front cover assembly fixture provided in this application includes a frame comprising a crossbeam and side beams disposed at the ends of the crossbeam;

[0035] The side beam is provided with the first support member and part of the second support member, and the crossbeam is provided with part of the second support member.

[0036] The front hood assembly fixture provided in this application includes a fixture frame, a positioning component, and two tightening components. The positioning component is movably mounted on the fixture frame and is used to position the front hood to the body-in-white. The two tightening components are respectively located on both sides of the fixture frame. When the front hood is closed, a portion of the tightening component is located outside the front hood. The tightening components are configured to tighten the bolts connecting the front hood and the hinges when the front hood is closed. The fixture frame provides a stable foundation for the positioning and tightening components, reducing displacement or deformation of the front hood during assembly and ensuring operational reliability. The positioning component precisely positions the front hood to the body-in-white, meeting the matching requirements of the rear sharp corner of the front hood with key parts such as the side panels and fenders, ensuring uniform gaps. Furthermore, the tightening components on both sides of the fixture frame can adapt to assembly needs in different directions for the front hood and can tighten all bolts when the front hood is closed. The tightening components can directly act on the bolts when the front hood is closed, avoiding the problems of unstable front hood assembly and large cumulative errors caused by hinge opening in traditional methods, thus improving the stability and accuracy of front hood assembly.

[0037] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0038] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.

[0039] Figure 1 Schematic diagram of the front cover assembly fixture provided in this application Figure 1 ;

[0040] Figure 2 Schematic diagram of the front cover assembly fixture provided in this application Figure 2 ;

[0041] Figure 3 A schematic diagram of the front cover assembly fixture provided in this application in the front cover closed state;

[0042] Figure 4 This is a schematic diagram of the hinge structure in the body-in-white of a related technology;

[0043] Figure 5 A partial structural schematic diagram of the clamping component provided in this application;

[0044] Figure 6 for Figure 5 A schematic diagram of one implementation method of the transmission component;

[0045] Figure 7 for Figure 5 A schematic diagram of another implementation method for the transmission component.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10. Front cover; 20. Hinge; 30. Wrench; 40. Anti-rotation positioning hole; 100. Fixture frame; 110. Crossbeam; 120. Side beam; 130. Extension; 200. Positioning assembly; 210. First positioning element; 220. Second positioning element; 230. Connecting plate; 300. Tightening assembly; 310. Transmission element; 3101. First end; 3102. Second end; 3103. First part; 3104. Bending part; 3105. Second part; 311. Housing; 3111. Receiving cavity; 312. Transmission assembly; 3121. Belt drive assembly; 3122. Gear drive assembly; 320. Connector; 321. Connecting part; 322. Extension; 400. First support; 500. Second support.

[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0050] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application 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 this application.

[0052] In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise specified precisely.

[0053] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0054] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0055] With the increasing number of new energy vehicles, most models have a front grille with a segmented, enclosed design. This requires matching in the X, Y, and Z directions, as well as alignment of the rear corners with the side panels and fenders. DTS (Dimension Tolerance Specification) is highly sensitive to these requirements, necessitating high assembly precision for the front grille.

[0056] Due to structural segmentation and space constraints, some vehicle models cannot accommodate hinged hinges and are instead fitted with four-bar hinges. When assembling the front hood onto the body-in-white on the welding assembly line, the traditional method involves unfolding the hinges, then tightening the front hood to the hinges. After closing the front hood, the gap between the side panels or fenders and the front hood is checked, and the gap is measured to ensure it is within acceptable limits. If it is not, the front hood needs to be reopened and the above operation repeated until it is acceptable.

[0057] In traditional assembly, the front cover is opened and then tightened. Due to the structure and envelope of the four-bar hinge itself, the front cover has poor stability in the XYZ directions when assembled with the four-bar hinge, which affects the assembly accuracy of the front cover.

[0058] To address the aforementioned technical problems, this application provides a front hood assembly fixture. This fixture includes a fixture frame, a positioning component, and two tightening components. The positioning component is movably mounted on the fixture frame and is used to position the front hood to the body-in-white. The two tightening components are respectively located on both sides of the fixture frame. When the front hood is closed, a portion of the tightening component is located outside the front hood. The tightening component is configured to tighten the bolts connecting the front hood and the hinge when the front hood is closed. The fixture frame provides a stable foundation for the positioning and tightening components, reducing displacement or deformation of the front hood during assembly and ensuring operational reliability. The positioning component precisely positions the front hood to the body-in-white, meeting the matching requirements of the rear sharp corner of the front hood with key components such as the side panels and fenders, ensuring uniform gaps. Furthermore, the tightening components on both sides of the fixture frame can adapt to assembly requirements in different directions of the front hood and can tighten all bolts when the front hood is closed. The tightening component can act directly on the bolts when the front cover is closed, avoiding the problems of unstable front cover assembly and large cumulative errors caused by the hinge opening in the traditional method, thus improving the stability and accuracy of front cover assembly.

[0059] It should be noted that, Figures 1 to 7 This diagram illustrates a simplified representation of the components in the front hood assembly fixture. The specific structures of the remaining components in the front hood assembly fixture are not limited to... Figures 1 to 7 of examples.

[0060] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0061] Reference Figure 1 , Figure 2 and Figure 3 As shown in the illustration, this application provides a front hood 10 assembly fixture for assembling the front hood 10 to the hinge 20 of the body-in-white. This part will be understood by those skilled in the art. On a vehicle welding assembly line, the body-in-white refers to the welded assembly of the vehicle's body structural components and body panels. The front hood 10 typically refers to the cover of the engine compartment located at the front of the vehicle, and the front hood 10 can be opened and closed relative to the body-in-white. (See related art for reference.) Figure 3 As shown, hinge 20 has an anti-rotation positioning hole 40, and hinge 20 is connected to the body-in-white through the anti-rotation positioning hole 40.

[0062] The front cover 10 assembly provided in this application includes an assembly frame 100, a positioning component 200, and two fastening components 300. The positioning component 200 is movably disposed on the assembly frame 100 and is used to position the front cover 10 to the body-in-white. The two fastening components 300 are respectively disposed on both sides of the assembly frame 100. When the front cover 10 is closed, a portion of the fastening component 300 is located outside the front cover 10. The fastening component 300 is configured to tighten the bolts connecting the front cover 10 and the hinge 20 when the front cover 10 is closed.

[0063] Through the above-described configuration, the mounting frame 100 provides a stable foundation for the positioning assembly 200 and the tightening assembly 300, reducing displacement or deformation of the front cover 10 during assembly, ensuring the stability of the front cover 10, and guaranteeing operational reliability. The positioning assembly 200 precisely positions the front cover 10 to the body-in-white, meeting the matching requirements of the rear sharp corner of the front cover 10 with key components such as the side panels and fenders, ensuring uniform gaps.

[0064] Furthermore, tightening components 300 are provided on both sides of the fixture frame 100 to accommodate assembly requirements in different directions of the front cover 10, enabling the tightening of various bolts when the front cover 10 is closed. It is understood here that in related technologies, such as... Figure 3 As shown, the front cover 10 has hinges 20 on both sides in the vehicle width direction. Two fastening components 300 are respectively set on both sides of the fixture frame 100, which ensures that when the front cover 10 is closed, each fastening component 300 directly acts on the corresponding bolt, without the need for multiple opening and closing of the front cover 10. This avoids the problem of unstable assembly and large cumulative error of the front cover 10 caused by the opening of the hinges 20 in the traditional method, and improves the stability and accuracy of the front cover 10 assembly.

[0065] In one possible implementation, the fastening assembly 300 includes a transmission member 310 disposed on the fixture frame 100; when the front cover 10 is closed, a first end 3101 of the transmission member 310 is located between the front cover 10 and the body-in-white, and a second end 3102 of the transmission member 310 is located outside the front cover 10.

[0066] The first end 3101 of the transmission component 310 is used to tighten the bolt, and the second end 3102 of the transmission component 310 is used to connect to the wrench 30.

[0067] Traditional methods require unfolding the hinge 20 before installing the front cover 10, but the hinge 20's structure results in poor stability after unfolding, easily introducing assembly errors. In the above embodiment, by setting a transmission component 310, bolt tightening can be achieved without unfolding the hinge 20. The first end 3101 of the transmission component 310 directly acts on the bolt between the front cover 10 and the body-in-white, while the second end 3102 is exposed for connecting the wrench 30. This design bypasses the stability dependence of the unfolded hinge 20, fundamentally eliminating assembly accuracy problems caused by hinge 20 wobbling. It should be noted that the wrench 30 can be an electric wrench 30, a pneumatic wrench 30, or a manual wrench 30. This application embodiment does not limit the specific structure of the wrench 30, allowing for flexible adjustment according to production line needs and improving the versatility of the equipment.

[0068] By exposing the second end 3102 of the transmission component 310, the wrench 30 can be directly operated when the front cover 10 is closed, avoiding the difficulties in tool access caused by space limitations in traditional methods, such as narrow gaps or complex enveloping spaces that prevent the use of tools. Furthermore, the transmission component 310 reduces repeated opening and closing operations. Traditional methods require repeated opening and closing of the front cover 10 to check gaps and make adjustments, while this solution allows for direct bolt tightening with the transmission component 310 in the closed state, eliminating the need for multiple openings and closings and significantly shortening the assembly cycle. Repeated opening and closing of the front cover 10 may cause positional displacement due to friction or deformation of the hinge 20; however, this solution completes tightening in the closed state, maintaining the relative position of the front cover 10 and the body-in-white and ensuring assembly accuracy.

[0069] In one possible implementation, the transmission member 310 includes a first part 3103, a bent part 3104, and a second part 3105 connected in sequence; the first part 3103 has a first end 3101, and the second part 3105 has a second end 3102; the bent part 3104 extends upward in a vertical direction.

[0070] With the front cover 10 closed, part of the second portion 3105 is located outside the front cover 10, or both the second portion 3105 and the bent portion 3104 are located outside the front cover 10.

[0071] In the above embodiment, the vertical direction is the height direction of the vehicle. The bent portion 3104 of the transmission component 310 extends in the vertical direction, which can effectively avoid the complex internal structure of the front cover 10 and reduce the risk of interference with traditional assembly areas. It is especially suitable for the narrow space of the enclosed segmented front cover 10 of new energy vehicles. By placing the second end 3102 of the transmission component 310 outside the front cover 10, sufficient space is provided for the operation of the wrench 30, avoiding the difficulty of tool intervention caused by the closure of the front cover 10, and reducing the complexity of manual operation.

[0072] To improve the compatibility of the front cover 10 assembly fixtures, the first end 3101 and the second end 3102 of the transmission component 310 can be of the same specification, such as hexagonal or star-shaped, to be compatible with pneumatic, electric or manual wrenches 30 or bolts, which facilitates the standardized management of production line tools.

[0073] In one possible implementation, the transmission member 310 includes a housing 311 and at least one transmission assembly 312.

[0074] The housing 311 has a receiving cavity 3111, and the transmission assembly 312 is located within the receiving cavity 3111. The input end of the transmission assembly 312 is the second end 3102 of the transmission member 310, and the output end of the transmission assembly 312 is the first end 3101 of the transmission member 310. The transmission assembly 312 is either a belt transmission assembly 3121 or a gear transmission assembly 3122, and each transmission assembly 312 is connected in a transmission manner.

[0075] In the above embodiments, by integrating the transmission assembly 312 within the receiving cavity 3111 of the housing 311, a closed transmission system is formed, avoiding interference from external impurities (such as dust and liquids) on the transmission assembly 312, and reducing the risk of transmission failure due to vibration or collision. The design employing "at least one transmission assembly 312" with each assembly connected allows for matching the torque required for bolt tightening through speed increase or torque variation, avoiding bolt loosening or overtightening caused by uneven force during direct manual operation. This achieves high-precision, high-stability, and highly versatile bolt tightening.

[0076] Reference Figure 6 As shown, the transmission group 312 is a belt transmission group 3121, and there are two belt transmission groups 3121 connected to each other. The input end of one belt transmission group 3121 is the second end 3102 of the transmission member 310, and the output end of the other belt transmission group 3121 is the first end 3101 of the transmission member 310. The belt transmission group 3121 is suitable for scenarios that require long-distance force transmission or smooth transmission, and can alleviate the difficulty of tool intervention caused by the narrow gap between the front cover 10 and the body-in-white.

[0077] Reference Figure 7 As shown, the transmission group 312 is a gear transmission group 3122, and there are four gear transmission groups 3122. Each gear transmission group 3122 is connected to the transmission group. Here, the gear in the gear transmission group 3122 can be a bevel gear. The bevel gear can realize the transmission of driving force in different directions. By setting the gear transmission group 3122, it is suitable for high torque and high precision scenarios. Stable power output is achieved through gear meshing, which is especially suitable for bolts in new energy vehicles with extremely high assembly precision requirements.

[0078] In one possible implementation, the tightening assembly 300 further includes a connector 320 having a connecting portion 321 and an extension portion 322.

[0079] The connecting part 321 is connected to the fixture frame 100, and the extension part 322 connects the connecting part 321 and the transmission member 310.

[0080] There is an angle between the connecting part 321 and the extension part 322.

[0081] In the above embodiment, an angle is provided between the connecting portion 321 and the extension portion 322 of the connector 320. The extension portion 322 of the connector 320 is inclined to connect to the transmission component 310, which can avoid the complex internal structure of the front cover 10 and provide sufficient operating space for the transmission component 310. By adjusting the angle or extension length of the connector 320, it can be quickly adapted to the bolt positions and assembly spaces of different vehicle models, improving the versatility of the fittings.

[0082] In one possible implementation, the positioning component 200 includes a first positioning element 210 and a second positioning element 220.

[0083] The first positioning element 210 is disposed on the fixture frame 100. The first positioning element 210 is used to extend toward the body-in-white and connect with the first positioning point of the body-in-white.

[0084] The second positioning member 220 is disposed on the fixture frame 100. The second positioning member 220 extends toward the front cover 10 and is connected to the second positioning point of the front cover 10.

[0085] Reference Figures 1 to 4 As shown, the first positioning element 210 is a positioning pin, which extends downwards in the vertical direction. The first positioning point of the body-in-white is a positioning hole. The fixture frame 100 is positioned on the body-in-white by the cooperation of the first positioning element 210 with the first positioning point, i.e., the positioning pin is inserted into the positioning hole. This structure is simple, easy to operate, and helps to improve assembly efficiency. The second positioning element 220 is a positioning pin, which extends upwards. The inner side of the front cover 10 is provided with a second positioning point, which is a positioning hole. The positioning pin is inserted into the positioning hole to position the front cover 10 on the fixture frame 100, thereby positioning the front cover 10 on the body-in-white and improving the stability of the front cover 10 during assembly.

[0086] To further improve the positioning accuracy of the front cover 10, in one possible implementation, a connecting plate 230 is also included; the first positioning member 210 and the second positioning member 220 are both disposed on the connecting plate 230, and the connecting plate 230 is movably disposed on the fixture frame 100.

[0087] In the above embodiments, the connecting plate 230 serves as a carrier for the first positioning member 210 and the second positioning member 220. It is movably mounted on the fixture frame 100 (e.g., sliding, rotating, or tilting), allowing for flexible adjustment based on the shape of the front cover 10, the position of the hinge 20, and the body-in-white positioning points of different vehicle models. This ensures precise alignment of the first positioning member 210 (connecting to the body-in-white) and the second positioning member 220 (connecting to the front cover 10). Integrating the first positioning member 210 and the second positioning member 220 into the same connecting plate 230 reduces fixture complexity and cost while avoiding the risk of interference between multiple components. By adjusting the position or angle of the connecting plate 230, assembly requirements for different vehicle models can be quickly switched without changing fixtures, improving the flexibility of the production line.

[0088] The connecting plate 230, acting as an intermediate carrier, can distribute the force on the first positioning component 210 and the second positioning component 220, preventing deformation of the fixture due to local stress concentration. This is especially suitable for the high-precision alignment requirements of the front cover 10 in the assembly of new energy vehicles. The movable connecting plate 230 can be fixed in the target position by mechanical locking or hydraulic clamping to ensure positioning stability and prevent displacement due to vibration or external force during bolt tightening.

[0089] In one possible implementation, the number of positioning components 200 is set to at least two, distributed on opposite sides of the fixture frame 100. By distributing at least two positioning components 200 on opposite sides of the fixture frame 100, bidirectional or multi-point constraints are formed, restricting the translation, rotation, and tilting of the front cover 10 in the closed state. For example, one side positioning component 200 fixes the left side of the front cover 10 to align with the body-in-white, and the other side fixes the right side, avoiding wobbling or twisting of the front cover 10 caused by unilateral positioning. The positioning components 200 on both sides can share the reaction force when the bolts are tightened, reducing the deformation or displacement of the fixture frame 100 caused by concentrated force at a single point, ensuring a high-precision match between the front cover 10 and the hinge 20. Bilateral positioning reduces assembly errors caused by uneven gaps in the segmented structure by simultaneously constraining multiple degrees of freedom of the front cover 10, ensuring overall assembly accuracy.

[0090] In one possible implementation, the front cover 10 assembly fixture provided in this application further includes a plurality of first support members 400 and a plurality of second support members 500.

[0091] The first support member 400 is disposed on the fixture frame 100 and screwed to the fixture frame 100. Multiple first support members 400 are distributed on opposite sides of the fixture frame 100. The first support member 400 is used to abut against the body-in-white.

[0092] The second support member 500 is disposed on the fixture frame 100 and screwed to the fixture frame 100. Multiple second support members 500 are distributed on opposite sides of the fixture frame 100. The second support members 500 are used to abut against the front cover 10.

[0093] Here, the first support member 400 abuts against the body-in-white, fixing the body-in-white through multi-point contact, offsetting the reaction force generated when the bolts are tightened, and preventing the body-in-white from shifting or vibrating due to localized stress.

[0094] The second support member 500 abuts against the front cover 10, providing an additional support point when the front cover 10 is closed, thus balancing the risk of deformation of the front cover 10 caused by the force applied by the transmission member 310. The first support member 400 and the second support member 500 are distributed on opposite sides of the fixture frame 100, forming a symmetrical force-bearing structure, avoiding frame twisting caused by unilateral support, and ensuring the foundation for high-precision assembly.

[0095] Furthermore, the position and quantity of the first support member 400 and the second support member 500 can be flexibly adjusted according to the vehicle characteristics (such as increasing support points or changing the distribution density) to adapt to different front cover 10 shapes, hinge 20 positions, and segmented structures. The contact surface between the first support member 400 and the body-in-white, and the contact surface between the second support member 500 and the front cover 10, can be designed as elastic contact (such as embedded rubber pads or adjustable screws) to compensate for manufacturing tolerances and assembly errors, and to avoid stress concentration that could lead to component damage.

[0096] In one possible implementation, the fixture frame 100 includes a crossbeam 110 and side beams 120 disposed at the ends of the crossbeam 110.

[0097] To further improve stability, the side beam 120 is provided with a first support member 400 and a portion of the second support member 500, and the crossbeam 110 is provided with a portion of the second support member 500.

[0098] In the above embodiment, by providing a portion of the second support member 500 on the crossbeam 110, more support points for supporting the front cover 10 can be provided, thereby improving the stability of the front cover 10.

[0099] In a specific implementation, the first support member 400 is arranged along the length of the side beam 120. To improve the applicability of the fixture frame 100, the side beam 120 has an extension 130 extending toward the body-in-white, and the first support member 400 is provided on the extension 130. A portion of the second support members 500 are arranged along the length of the side beam 120, and a portion of the second support members 500 are arranged along the length of the crossbeam 110.

[0100] The implementation principle of a front cover 10 assembly fixture according to an embodiment of this application is as follows: The front cover 10 assembly fixture includes a fixture frame 100, a positioning component 200, and two tightening components 300. The positioning component 200 is movably disposed on the fixture frame 100 and is used to position the front cover 10 to the body-in-white. The two tightening components 300 are respectively disposed on both sides of the fixture frame 100. When the front cover 10 is closed, a portion of the tightening component 300 is located outside the front cover 10. The tightening component 300 is configured to tighten the bolts connecting the front cover 10 and the hinge 20 when the front cover 10 is closed. The fixture frame 100 provides a stable foundation for the positioning component 200 and the tightening components 300, reducing displacement or deformation of the front cover 10 during assembly and ensuring operational reliability. The positioning component 200 precisely positions the front cover 10 to the body-in-white, meeting the matching requirements of the rear sharp corner of the front cover 10 with key parts such as the side panels and fenders, ensuring uniform gaps. Furthermore, tightening components 300 are provided on both sides of the fixture frame 100 to adapt to the assembly requirements of the front cover 10 in different directions, and can tighten all bolts when the front cover 10 is closed. The tightening components 300 can directly act on the bolts when the front cover 10 is closed, avoiding the problems of unstable assembly and large cumulative errors caused by the opening of the hinge 20 in the traditional method, ensuring that the front cover 10 is installed correctly on the first attempt, and improving the stability and accuracy of the front cover 10 assembly.

[0101] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein.

[0102] The embodiments in this application are intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0103] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A front cover fitting tool for fitting a front cover (10) to a hinge (20) of a body in white, characterized in that, include: Fixture frame (100); A positioning component (200) is movably disposed on the fixture frame (100) for positioning the front cover (10) to the body-in-white; Two clamping components (300) are respectively disposed on both sides of the fixture frame (100); When the front cover (10) is closed, a portion of the structure of the tightening assembly (300) is located outside the front cover (10), and the tightening assembly (300) is configured to tighten the bolts connecting the front cover (10) and the hinge (20) when the front cover (10) is closed.

2. The front cover assembly fixture of claim 1, wherein The tightening assembly (300) includes a transmission member (310) disposed on the fixture frame (100). When the front cover (10) is closed, the first end (3101) of the transmission member (310) is located between the front cover (10) and the body-in-white, and the second end (3102) of the transmission member (310) is located outside the front cover (10); The first end (3101) of the transmission member (310) is used to tighten the bolt, and the second end (3102) of the transmission member (310) is used to connect to the wrench (30).

3. The front cover assembly fixture according to claim 2, characterized in that, The transmission component (310) includes a first part (3103), a bent part (3104), and a second part (3105) connected in sequence. The first part (3103) has the first end (3101), and the second part (3105) has the second end (3102). The bent portion (3104) extends vertically upwards; When the front cover (10) is closed, part of the second portion (3105) is located outside the front cover (10), or both the second portion (3105) and the bent portion (3104) are located outside the front cover (10).

4. The front cover assembly fixture according to claim 2, characterized in that, The transmission component (310) includes a housing (311) and at least one transmission assembly (312). The housing (311) has a receiving cavity (3111), the transmission group (312) is located in the receiving cavity (3111), and the input end of the transmission group (312) is the second end (3102) of the transmission member (310), and the output end of the transmission group (312) is the first end (3101) of the transmission member (310). The transmission group (312) is either a belt transmission group (3121) or a gear transmission group (3122), and each of the transmission groups (312) is connected in a transmission manner.

5. The front cover assembly fixture according to claim 2, characterized in that, The tightening assembly (300) also includes a connector (320) having a connecting portion (321) and an extension portion (322). The connecting part (321) is connected to the fixture frame (100), and the extension part (322) connects the connecting part (321) and the transmission member (310). There is an angle between the connecting part (321) and the extension part (322).

6. The front cover assembly fixture according to any one of claims 1 to 5, characterized in that, The positioning component (200) includes a first positioning element (210) and a second positioning element (220); The first positioning member (210) is disposed on the fixture frame (100), and the first positioning member (210) is used to extend toward the body-in-white and connect to the first positioning point of the body-in-white; The second positioning member (220) is disposed on the fixture frame (100), the second positioning member (220) extends toward the front cover (10) and is connected to the second positioning point of the front cover (10).

7. The front cover assembly fixture according to claim 6, characterized in that, It also includes a connecting plate (230); The first positioning member (210) and the second positioning member (220) are both disposed on the connecting plate (230), and the connecting plate (230) is movably disposed on the fixture frame (100).

8. The front cover assembly fixture according to claim 6, characterized in that, The number of positioning components (200) is set to at least two, and the positioning components (200) are distributed on opposite sides of the fixture frame (100).

9. The front cover assembly fixture according to any one of claims 1 to 5, characterized in that, It also includes multiple first support members (400) and multiple second support members (500); The first support member (400) is disposed on the fixture frame (100), and a plurality of the first support members (400) are distributed on opposite sides of the fixture frame (100). The first support member (400) is used to abut against the body-in-white. The second support member (500) is disposed on the fixture frame (100), and a plurality of the second support members (500) are distributed on opposite sides of the fixture frame (100). The second support members (500) are used to abut against the front cover (10).

10. The front cover assembly fixture according to claim 9, characterized in that, The fixture frame (100) includes a crossbeam (110) and side beams (120) disposed at the ends of the crossbeam (110). The side beam (120) is provided with the first support member (400) and a portion of the second support member (500), and the cross beam (110) is provided with a portion of the second support member (500).

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