A pre-hang structure and vehicle

Abstract

The application relates to the technical field of vehicles and discloses a pre-hanging structure and a vehicle, the pre-hanging structure is applied to a vehicle, the vehicle comprises a rear anti-collision beam and a rear baffle, the rear anti-collision beam is connected with the rear baffle through the pre-hanging structure, the pre-hanging structure comprises a connecting piece and a connecting hole; the connecting piece is arranged at the end of the rear anti-collision beam; the connecting hole is arranged on the rear baffle, the shape of the connecting piece is matched with the shape of the connecting hole, and the connecting piece and the connecting hole are detachably connected. The pre-hanging structure provided by the application realizes natural suspension of the rear anti-collision beam through the arrangement of the connecting piece and the connecting hole and does not need manual hand holding, so that an operator can install bolts with both hands, the operation load is reduced, the operation convenience is improved, human operation interference and the risk of production line stoppage are reduced, and the production efficiency is significantly improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to a pre-mounted structure and vehicle. Background Technology

[0002] As the automotive manufacturing industry continues to demand higher production efficiency and operational safety, the installation of the rear bumper beam is a key process in the automotive body manufacturing process to ensure the safety of the vehicle's rear collision and the integrity of the body structure. Its installation efficiency and ease of operation directly affect the cycle stability of the entire production line and the intensity of manual labor.

[0003] Currently, the installation of rear bumper beams in this field generally suffers from the lack of pre-attachment structures. Existing technologies do not incorporate pre-attachment positioning components that are compatible between the rear bumper beam and the rear bulkhead. During actual installation, operators must continuously hold the rear bumper beam with their left hand to maintain its relative position to the rear bulkhead while simultaneously using their right hand to install the bolts. This single-handed operation mode presents several challenges. First, it makes it difficult for operators to accurately align the bolts with the mounting holes, resulting in high operational difficulty, low error tolerance, and significantly extended installation time for each bolt. This leads to low overall installation efficiency, frequently resulting in the inability to complete the bumper beam installation within the production line's specified cycle time. Second, delays in preceding processes due to efficiency issues directly impact the work progress of subsequent processes, causing confusion in process connections. In severe cases, it can even interfere with manual work paths, forcing temporary production line shutdowns. This increases production management costs and reduces the overall vehicle production pass rate and stability.

[0004] Therefore, it is particularly important to develop a pre-mounted structure and vehicle that can achieve natural suspension of the rear anti-collision beam through the setting of connectors and connecting holes without manual support, allowing operators to install bolts with both hands, thereby reducing the operating load, improving the convenience of operation, reducing manual operation interference and the risk of production line downtime, and improving production efficiency. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a pre-attached structure and vehicle. By incorporating connectors and connecting holes, it solves the current lack of a pre-attached structure and vehicle that enables natural suspension of the rear anti-collision beam without manual assistance, allowing operators to perform bolt installation with both hands. This reduces operational load, improves operational convenience, minimizes human intervention and production line downtime risks, and enhances production efficiency.

[0006] To achieve the above objectives, the main technical solutions adopted in this application include: In a first aspect, this application provides a pre-mounting structure, which is applied in a vehicle. The vehicle includes a rear bumper beam and a rear bulkhead. The rear bumper beam is connected to the rear bulkhead through the pre-mounting structure. The pre-mounting structure includes a connector and a connecting hole. The connector is located at the end of the rear anti-collision beam; The connecting hole is provided on the rear panel, the shape of the connector matches the shape of the connecting hole, and the connector is detachably connected to the connecting hole.

[0007] In some optional embodiments, the connector includes a straight portion, a first transition portion, and a hook portion, wherein the straight portion, the first transition portion, and the hook portion are integrally formed, and the first transition portion is located between the straight portion and the hook portion.

[0008] In some optional embodiments, the first transition portion and the hook portion protrude in a first preset direction, which is the direction close to the rear panel.

[0009] In some alternative embodiments, the length of the connector is 14cm-16cm, the length of the hook is 8cm-10cm, and the width of the hook is 10cm-12cm.

[0010] In some optional embodiments, the distance between the first endpoint and the first preset point is 2cm-4cm. The first endpoint is the endpoint of the hook part near the first transition part. The first preset point is a point on the plane where the straight part of the connector is located. The first connecting line is perpendicular to the plane where the hook part is located. The first connecting line is the line connecting the first endpoint and the first preset point.

[0011] In some optional embodiments, the distance between the second endpoint and the second preset point is 4cm-6cm. The second endpoint is the endpoint of the hook part away from the first transition part. The second preset point is another point on the plane where the straight part of the connector is located. The second connecting line is perpendicular to the plane where the hook part is located. The second connecting line is the line connecting the second endpoint and the second preset point.

[0012] In some optional embodiments, the connecting hole includes a base hole body, a hook-and-hold portion, and a second transition portion. The base hole body is located on the plane of the rear panel and is located above the hook-and-hold portion. The cross-sectional shape of the second transition portion is U-shaped. The second transition portion and the hook-and-mount portion protrude in a second preset direction, which is the direction close to the anti-collision beam.

[0013] In some optional embodiments, the length of the base hole is 50cm-60cm, the width of the base hole is 15cm-25cm, the length of the hanging receiving part is 20cm-30cm, and the width of the hanging receiving part is 8cm-10cm.

[0014] In some optional embodiments, the distance between the third endpoint and the third preset point is 5cm-7cm. The third endpoint is the endpoint of the hook-and-hold portion away from the second transition portion. The third preset point is a point on the plane where the rear panel is located. The third connecting line is perpendicular to the plane where the hook-and-hold portion is located. The third connecting line is the line connecting the third endpoint and the third preset point.

[0015] Secondly, this application proposes a vehicle that includes a pre-attached structure as described in any of the above embodiments.

[0016] The pre-mounted structure provided in this application is applied to a vehicle, which includes a rear bumper beam and a rear bulkhead. The rear bumper beam is connected to the rear bulkhead via the pre-mounted structure. The pre-mounted structure includes a connector and a connecting hole. The connector is disposed at the end of the rear bumper beam; the connecting hole is disposed on the rear bulkhead. The shape of the connector matches the shape of the connecting hole, and the connector and the connecting hole are detachably connected. The pre-mounted structure provided in this application achieves natural suspension of the rear bumper beam without manual support through the connector and connecting hole, allowing operators to perform bolt installation with both hands. This reduces operational load, improves operational convenience, reduces manual intervention and production line downtime risks, and significantly improves production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the pre-hanging structure according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of a connector structure according to an embodiment of the present invention; Figure 3 This is a side sectional view of a connector according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a connecting hole structure according to an embodiment of the present invention; Figure 5 This is a side cross-sectional view of the connecting hole according to an embodiment of the present invention.

[0019] The following is supplementary explanation of the attached figures: 1-Rear bumper beam; 2-Rear panel; 3-Connector; 4-Connecting hole; 31-Straight part of the connector; 32-First transition part; 33-Hanging part; 41-Basic hole body; 42-Hanging and receiving part; 43-Second transition part. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Because current technologies lack a pre-mounted positioning component that adapts to the rear bumper beam and rear bulkhead, operators struggle to accurately align the bolts with the mounting holes during actual installation. This not only increases operational difficulty and tolerance for error but also significantly prolongs the installation time for each bolt, resulting in low overall installation efficiency, increased production management costs, and reduced vehicle production pass rate and stability. Therefore, to achieve natural suspension of the rear bumper beam without manual assistance, allowing operators to install bolts with both hands, thus reducing workload, improving ease of operation, minimizing manual interference and production line downtime risks, and increasing production efficiency, this application provides a pre-mounted structure and vehicle.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of a pre-mounted structure according to an embodiment of the present utility model. On one hand, this application provides a pre-mounted structure applied in a vehicle, the vehicle including a rear bumper beam 1 and a rear bulkhead 2, the rear bumper beam 1 being connected to the rear bulkhead 2 via the pre-mounted structure, the pre-mounted structure including a connector 3 and a connecting hole 4; The connector 3 is disposed at the end of the rear anti-collision beam 1; The connecting hole 4 is provided on the rear panel 2, the shape of the connector 3 matches the shape of the connecting hole 4, and the connector 3 and the connecting hole 4 are detachably connected.

[0023] Optionally, there are two connectors 3. Connectors 3 serve as extensions of the rear bumper beam and are symmetrically positioned at the ends of the rear bumper beam 1, forming a stable connection with the main body of the rear bumper beam. They are the core load-bearing components for realizing the pre-attachment function. There are two connecting holes 4. Connecting holes 4 serve as pre-attachment mating components and are symmetrically located on the rear panel 2. Their positions are precisely aligned with the connectors 3 at the ends of the rear bumper beam to ensure smooth mating between the two.

[0024] Optionally, the rear bumper beam 1 is connected to the rear bulkhead 2 via the aforementioned pre-attached structure. Initial positioning is achieved through the engagement of the connector 3 and the connecting hole 4, ensuring subsequent permanent fixation. The overall contour and cross-sectional shape of the connector 3 perfectly match the internal contour and aperture size of the connecting hole 4. This precise fit design ensures a tight fit after the connector 3 is inserted into the connecting hole 4, preventing loosening or misalignment and guaranteeing the stability of the pre-attached state. The connector 3 and connecting hole 4 adopt a detachable connection design, which not only meets the need for rapid pre-attachment during installation but also facilitates disassembly operations during subsequent maintenance or replacement of the rear bumper beam or rear bulkhead without damaging the overall structure, thus improving maintenance convenience.

[0025] By precisely embedding the connector 3 into the corresponding connecting hole 4, the rear bumper beam 1 can be stably suspended on the rear panel 2 using this pre-mounted structure, maintaining a relatively fixed position without manual support. This design fundamentally solves the pain point of traditional installation processes requiring one hand to hold the beam and one hand to operate, providing operators with the conditions to work with both hands. This reduces the workload, improves installation accuracy and efficiency, and ensures the stability of the production line's cycle time.

[0026] In an optional embodiment, the connector 3 includes a straight portion 31, a first transition portion 32, and a hook portion 33, wherein the straight portion 31, the first transition portion 32, and the hook portion 33 are integrally formed, and the first transition portion 32 is located between the straight portion 31 and the hook portion 33.

[0027] Please see Figure 2 , Figure 2This is a schematic diagram of the connector structure according to an embodiment of the present invention. Optionally, the straight portion 31 of the connector is the connection base between the connector 3 and the rear anti-collision beam 1. One end of the straight portion 31 is fixed to the rear anti-collision beam 1, and the other end is connected to the first transition portion 32. Its function is to stably fix the connector 3 on the rear anti-collision beam 1, ensuring that the load-bearing base is firm during pre-hanging and preventing loosening or displacement between the connector 3 and the rear anti-collision beam 1. The hook portion 33 is a direct mating component between the connector 3 and the connecting hole 4 on the rear panel 2, used to realize the pre-hanging function. The hook portion 33 needs to have a specific contour and size to adapt to the shape of the connecting hole 4, ensuring that it can stably support the weight of the rear anti-collision beam 1 after being embedded, achieving natural suspension without falling off, and providing conditions for operators to install bolts with both hands. The first transition section 32 is located between the straight section 31 and the hook-up section 33 of the connector, serving as a form transition and stress buffer. Through its own structural design, namely the R-angle transition connecting the straight shape of the straight section 31 and the hook-up shape of the hook-up section 33, it ensures the smooth overall structure of the connector 3. On the other hand, the weight of the rear anti-collision beam 1 is transferred to the transition section 32 through the straight section 31 of the connector, and then smoothly transferred to the hook-up section 33. Finally, the weight of the hook-up section 33 is transferred to the rear panel 2 through the connection hole 4, avoiding uneven local stress. It can disperse the stress concentration of the rear anti-collision beam 1 on the connector 3 during pre-attachment, and prevent the joint between the straight section and the hook-up section from breaking due to excessive stress, thereby improving the structural strength of the connector 3.

[0028] Optionally, the straight part 31, the first transition part 32, and the hanging part 33 of the connector are integrally formed by stamping, directly making the three parts of the connector 3 into a whole without subsequent assembly. This process avoids splicing gaps or connection interfaces between parts, ensuring the integrity of the overall structure of the connector 3, while avoiding the impact of assembly errors on the pre-hanging fit accuracy. It also ensures that the connector 3 will not fail to hang due to loosening of the interface when bearing the weight of the rear anti-collision beam 1.

[0029] In an optional embodiment, the first transition portion 32 and the hook portion 33 protrude in a first preset direction, which is the direction close to the rear panel 2.

[0030] Optionally, the rear bumper beam 1 is located on the outer rear of the vehicle body, and the rear bulkhead 2 is located inside the vehicle body and is arranged relatively parallel to the rear bumper beam 1. The direction closer to the rear bulkhead 2 is the horizontal direction from the body of the rear bumper beam 1 to the body of the rear bulkhead 2. The straight part 31 of the connector needs to be fixed to the end of the rear bumper beam 1, and its extension direction is consistent with the body of the rear bumper beam 1. The first transition part 32 is an arc-shaped transition section, which is the connecting part between the straight part 31 of the connector and the hook-up part 33. It needs to bend and protrude from the lateral extension direction of the straight part 31 of the connector towards the rear bulkhead 2 to form a smooth transition, i.e., the R-angle design. The hook-up part 33 continues to extend in the same direction from the protruding end of the first transition part 32, and finally forms a hook-up shape that matches the connecting hole 4 of the rear bulkhead 2.

[0031] Optionally, the protruding structure allows the hook-on portion 33 to extend out of the plane of the rear bumper beam 1 and directly point to the connection hole 4 of the rear panel 2, solving the problem that the straight structure cannot achieve spatial docking with the rear panel 2. The first transition portion 32 and the hook-on portion 33 protrude towards the rear panel 2, and the hook-on portion 33 can be smoothly inserted into the connection hole 4 on the rear panel 2 to form a physical hook-on relationship. At the same time, the protruding transition of the first transition portion 32 ensures the continuous force transmission between the hook-on portion 33 and the straight portion 31 of the connector, avoiding structural weakness caused by abrupt changes in direction.

[0032] In an optional embodiment, the length of the connector 3 is 14cm-16cm, the length of the hook part 33 is 8cm-10cm, and the width of the hook part 33 is 10cm-12cm.

[0033] Optionally, the length of the connector 3, the length of the hook part 33, and the width of the hook part 33 can be set according to actual business needs, and are not limited here. For example, the length of the connector 3 can be 15cm, the length of the hook part 33 can be 9cm, and the width of the hook part 33 can be 11cm. The length of the hook part 33 must meet the requirement of having sufficient load-bearing length after being embedded in the connecting hole 4. If it is too short, the hooking depth will be insufficient, and it will be easy to fall off during pre-hanging; if it is too long, it may exceed the range of the connecting hole 4 and cannot adapt to the structural space of the rear panel 2. The width of the hook part 33 should correspond to the requirement of matching the shape of the connector 3 and the connecting hole 4, and at the same time adapt to the structural strength of the rear panel 2. If it is too narrow, the load-bearing area of ​​the hook part 33 will be insufficient, and it will be easy to deform under force; if it is too wide, it may exceed the opening range of the connecting hole 4 on the rear panel 2, or interfere with other components of the rear panel.

[0034] Optionally, the total length of the mounting part 33 and the first transition part 32 is 15cm, and the length of the straight part 31 of the connector is 4cm. The connector 3 has a transition structure with a radius of 6cm at the connection with the rear bumper beam 1.

[0035] In an optional embodiment, the distance between the first endpoint and the first preset point is 2cm-4cm. The first endpoint is the endpoint of the hook part 33 near the first transition part 32. The first preset point is a point on the plane where the straight part 31 of the connector is located. The first connecting line is perpendicular to the plane where the hook part 33 is located. The first connecting line is the line connecting the first endpoint and the first preset point.

[0036] In an optional embodiment, the distance between the second endpoint and the second preset point is 4cm-6cm. The second endpoint is the endpoint of the hook part 33 away from the first transition part 32. The second preset point is another point on the plane where the straight part 31 of the connector is located. The second connecting line is perpendicular to the plane where the hook part 33 is located. The second connecting line is the line connecting the second endpoint and the second preset point.

[0037] Please see Figure 3 , Figure 3 This is a side sectional view of a connector according to an embodiment of the present invention. Optionally, the hook-on portion 33 is connected to the straight portion 31 of the connector via a first transition portion 32. The first endpoint is the outermost endpoint of the first transition portion 32 and the straight portion 31 of the connector, and is the starting reference point for the axial extension of the hook-on portion 33. The plane containing the straight portion 31 of the connector is the transverse plane of the end of the rear anti-collision beam. The first preset point is the foot of the perpendicular line drawn from the first endpoint to the plane containing the straight portion 31 of the connector, and is a reference point reflecting the spatial height of the hook-on portion 33 relative to the straight portion 31 of the connector. The first connecting line is a vertical line segment perpendicular to the extension direction of the hook-on portion 33, directly reflecting the spatial distance between the hook-on portion 33 and the straight portion 31 in the direction perpendicular to the plane of the hook-on portion. The first transition section 32 needs to transition with an R-angle. The distance between the first endpoint and the first preset point is the protrusion height of the hook section 33 relative to the straight section 31. It needs to be precisely matched with the gap between the rear bumper beam and the rear panel to avoid insufficient protrusion of the hook section 33, which would prevent it from reaching the connection hole 4 of the rear panel 2 and causing the pre-attachment function to fail, or excessive protrusion of the hook section 33, which would interfere with other components on the back of the rear panel 2 and cause installation difficulties. The distance between the first endpoint and the first preset point can be set according to actual business needs and is not limited here. For example, the distance between the first endpoint and the first preset point is 3cm.

[0038] Optionally, the second endpoint is the endpoint of the hook-up portion 33 furthest from the first transition portion 32, and is the axially extending end endpoint of the hook-up portion 33. The second preset point is a specific point on the plane where the straight portion 31 of the connector is located. Since the plane where the straight portion 31 is located is consistent with the end plane of the rear bumper beam 1, the second preset point is essentially the foot of the perpendicular line drawn from the second endpoint to the plane where the straight portion 31 is located, and is a reference point for measuring the spatial height of the end of the hook-up portion 33 relative to the straight portion. The second connecting line is the line connecting the second endpoint and the second preset point, and is perpendicular to the plane where the hook-up portion 33 is located. It reflects the protrusion height of the end of the hook-up portion 33 relative to the rear bumper beam 1, and is the spatial dimension to ensure precise fit between the hook-up portion and the connecting hole 4.

[0039] In an optional embodiment, the connecting hole includes a base hole body 41, a hook-and-hold portion 42, and a second transition portion 43. The base hole body 41 is located on the plane of the rear panel 2 and is located above the hook-and-hold portion 42. The cross-sectional shape of the second transition portion 43 is U-shaped. The second transition portion 43 and the hook-and-hold portion 42 protrude in a second preset direction, which is the direction close to the anti-collision beam 1.

[0040] Please see Figure 4 , Figure 4 This is a schematic diagram of a connecting hole structure according to an embodiment of the present invention. Optionally, the basic hole 41 is the entrance and positioning reference of the connecting hole 4, located on the plane of the rear panel 2. The rear panel 2 has a planar structure, and the basic hole 41 is directly opened on this plane, with a regular hole shape such as rectangular or oblong. It is the channel for the hooking part 33 of the connector 3 to enter the connecting hole 4, providing an insertion guide for the hooking part 33, ensuring that the hooking part can be accurately aligned with the subsequent hooking receiving part 42, and serving as a connecting structure between the connecting hole 4 and the rear panel 2, so that the connecting hole as a whole is integrated with the plane of the rear panel, avoiding structural abruptness caused by local protrusions, while ensuring the structural integrity of the rear panel body.

[0041] Optionally, the mounting and accommodating part 42 is a mounting part 33 used to accommodate and limit the connector 3 for pre-mounting and bearing. Its internal contour is completely adapted to the external shape of the mounting part 33, and its depth must be sufficient to stably bear the weight of the rear anti-collision beam 1 after the mounting part 33 is fully embedded. The mounting and accommodating part 42 directly achieves this function by wrapping and limiting the mounting part 33, thus preventing the mounting part from shifting left and right or falling off up and down during the pre-mounting process.

[0042] Optionally, the second transition section 43 has a U-shaped cross-section. The opening of the U-shaped structure faces the base hole 41, and the two arc-shaped sides connect the edges of the base hole 41 and the edges of the hanging receiving part 42, forming a smooth transition channel. This guides the hanging part 33 to smoothly enter the hanging receiving part 42 from the base hole 41, avoiding jamming or interference due to the height difference between the two. Furthermore, the arc-shaped structure of the U disperses stress, preventing the connecting hole 4 from cracking due to excessive local stress caused by sharp edges at the junction of the base hole and the hanging receiving part, thus improving the overall structural strength of the connecting hole.

[0043] Optionally, from the rear view of the vehicle, the base hole 41 is located in the upper region of the mounting receiving part 42, and the two are vertically distributed and connected by the U-shaped structure of the second transition part 43. When the operator installs the rear bumper beam 1, they usually align the mounting part 33 with the base hole 41 from the rear of the vehicle and then slide it into the mounting receiving part 42. Pre-attachment can be completed without additional angle adjustment. The mounting receiving part 42 can use gravity to assist in limiting the position, and the mounting part 33 is not easy to fall off upward after sliding in, further improving the stability of pre-attachment.

[0044] Optionally, the second preset direction is from the rear panel 2 body towards the rear outer side of the vehicle body, which is opposite to the protruding direction of the connector 3, ensuring that the two form a concave-convex fit. The hook-up portion 33 of the connector 3 protrudes towards the rear panel 2, and the connecting hole protrudes in the opposite direction to form a complementary fit, so that the hook-up portion 33 can be completely embedded in the recessed space of the hook-up receiving portion 42, avoiding gaps between the two that could cause the rear anti-collision beam to sway. The protruding structure makes the hook-up receiving portion 42 form a receiving cavity with a certain depth, rather than just a through hole on the rear panel, which can fully accommodate the thickness and length of the hook-up portion 33, ensuring sufficient load-bearing area. At the same time, the protruding structure increases the material thickness at the edge of the connecting hole, and with the arc design of the U-shaped transition portion, it can effectively disperse the load-bearing stress, preventing the rear panel from deforming or breaking due to the opening and the weight of the rear anti-collision beam. The U-shaped cross section of the second transition portion 43 and the protruding shape of the hook-up receiving portion 42 can be achieved by single stamping, without the need for subsequent splicing or processing, simplifying the production process.

[0045] In an optional embodiment, the length of the base hole 41 is 50cm-60cm, the width of the base hole 41 is 15cm-25cm, the length of the hanging receiving part 42 is 20cm-30cm, and the width of the hanging receiving part 42 is 8cm-10cm.

[0046] Optionally, the length of the base hole 41 can be 55cm, the width of the base hole 41 can be 20cm, the length of the hook-and-hold portion 42 can be 25cm, and the width of the hook-and-hold portion 42 can be 9cm, to fit with the hook portion 33, ensuring that the hook portion can be accurately positioned after being inserted, avoiding over-insertion or detachment. The edge span of the second transition portion 43 is 49cm, and the radius of the second transition portion 43 is 12cm.

[0047] In an optional embodiment, the distance between the third endpoint and the third preset point is 5cm-7cm. The third endpoint is the endpoint of the hanging and receiving part 42 away from the second transition part 43. The third preset point is a point on the plane where the rear panel 2 is located. The third connecting line is perpendicular to the plane where the hanging and receiving part 42 is located. The third connecting line is the line connecting the third endpoint and the third preset point.

[0048] Optionally, the third endpoint is the endpoint of the hook-and-hold portion 42 furthest from the second transition portion 43. It is the end edge point of the axial extension of the hook-and-hold portion 42. The third endpoint is the outermost endpoint of the load-bearing area of ​​the hook-and-hold portion, and it is the limiting point where the hook-and-hold portion 33 finally abuts after being inserted, directly affecting the hook-and-hold depth and load-bearing stability. The third preset point is a specific point on the plane where the rear panel 2 is located. The plane where the rear panel 2 is located is the reference plane of the rear end of the vehicle body. The third preset point is the foot of the perpendicular line drawn from the third endpoint to this reference plane, and it is the core reference point for measuring the protrusion height of the hook-and-hold portion 42 relative to the plane of the rear panel. The third connecting line is the line segment connecting the third endpoint and the third preset point. This line segment must be perpendicular to the plane where the hook-and-hold portion 42 is located, representing the protrusion height of the end of the hook-and-hold portion 42 relative to the reference plane of the rear panel 2. It is a key spatial dimension to ensure the fit between the connecting hole and the connector.

[0049] Optionally, the distance between the third endpoint and the third preset point is 6cm, which matches the protrusion height of the hook part 33, so that the hook part is embedded to form an interference fit. The weight of the rear anti-collision beam is offset by the wrapping and limiting of the hole wall, so that it can be naturally suspended without manual support. This prevents the rear anti-collision beam from falling off due to vibration or operation during the pre-hanging process, ensuring the safety and smoothness of the assembly process, and indirectly improving the stability of the production line cycle.

[0050] Optionally, the distance between the fourth endpoint and the fourth preset point is 4cm. The fourth endpoint is the endpoint of the hook-and-hold portion 42 near the second transition portion 43. The fourth preset point is a point on the plane where the rear panel 2 is located. The fourth connecting line is perpendicular to the plane where the hook-and-hold portion 42 is located. The fourth connecting line is the line connecting the fourth endpoint and the fourth preset point.

[0051] Optionally, the fourth endpoint is the edge endpoint at the junction of the mounting and receiving portion 42 and the second transition portion 43, affecting the smoothness of the mounting part's insertion. The fourth preset point is a specific point on the plane where the rear panel 2 is located. The plane where the rear panel 2 is located is the reference plane of the rear end of the vehicle body. The fourth preset point is the foot of the perpendicular line drawn from the fourth endpoint to this reference plane. The fourth connecting line is the line connecting the fourth endpoint and the fourth preset point, and this line segment must be perpendicular to the plane where the mounting and receiving portion 42 is located.

[0052] On the other hand, this application provides a vehicle that includes a pre-attached structure as described in any of the above embodiments.

[0053] The pre-mounted structure provided in this application is applied to a vehicle, which includes a rear bumper beam and a rear bulkhead. The rear bumper beam is connected to the rear bulkhead via the pre-mounted structure. The pre-mounted structure includes a connector and a connecting hole. The connector is disposed at the end of the rear bumper beam; the connecting hole is disposed on the rear bulkhead. The shape of the connector matches the shape of the connecting hole, and the connector and the connecting hole are detachably connected. The pre-mounted structure provided in this application achieves natural suspension of the rear bumper beam without manual support through the connector and connecting hole, allowing operators to perform bolt installation with both hands. This reduces operational load, improves operational convenience, reduces manual intervention and production line downtime risks, and significantly improves production efficiency.

[0054] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0055] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A pre-mounted structure, characterized in that, The pre-attached structure is applied in a vehicle, which includes a rear bumper beam (1) and a rear bulkhead (2). The rear bumper beam (1) is connected to the rear bulkhead (2) through the pre-attached structure. The pre-attached structure includes a connector (3) and a connecting hole (4). The connector (3) is disposed at the end of the rear anti-collision beam (1); The connecting hole (4) is provided on the rear panel (2), the shape of the connector (3) matches the shape of the connecting hole (4), and the connector (3) and the connecting hole (4) are detachably connected.

2. The pre-mounted structure according to claim 1, characterized in that, The connector (3) includes a straight part (31), a first transition part (32), and a hook part (33). The straight part (31), the first transition part (32), and the hook part (33) are integrally formed. The first transition part (32) is located between the straight part (31) and the hook part (33).

3. The pre-mounted structure according to claim 2, characterized in that, The first transition portion (32) and the hook portion (33) protrude in a first preset direction, which is the direction close to the rear panel (2).

4. The pre-mounted structure according to claim 2, characterized in that, The length of the connector (3) is 14cm-16cm, the length of the hook part (33) is 8cm-10cm, and the width of the hook part (33) is 10cm-12cm.

5. The pre-mounted structure according to claim 2, characterized in that, The distance between the first endpoint and the first preset point is 2cm-4cm. The first endpoint is the endpoint of the hook part (33) near the first transition part (32). The first preset point is a point on the plane where the straight part (31) of the connector is located. The first connecting line is perpendicular to the plane where the hook part (33) is located. The first connecting line is the line connecting the first endpoint and the first preset point.

6. The pre-mounted structure according to claim 5, characterized in that, The distance between the second endpoint and the second preset point is 4cm-6cm. The second endpoint is the endpoint of the hook part (33) away from the first transition part (32). The second preset point is another point on the plane where the straight part (31) of the connector is located. The second connecting line is perpendicular to the plane where the hook part (33) is located. The second connecting line is the line connecting the second endpoint and the second preset point.

7. The pre-mounted structure according to claim 1, characterized in that, The connecting hole includes a base hole body (41), a hook-and-hold portion (42), and a second transition portion (43). The base hole body (41) is located on the plane of the rear panel (2) and is located above the hook-and-hold portion (42). The cross-sectional shape of the second transition part (43) is U-shaped. The second transition part (43) and the hook-and-hold part (42) protrude in a second preset direction, which is the direction close to the anti-collision beam (1).

8. The pre-mounted structure according to claim 7, characterized in that, The length of the base hole (41) is 50cm-60cm, the width of the base hole (41) is 15cm-25cm, the length of the hanging and receiving part (42) is 20cm-30cm, and the width of the hanging and receiving part (42) is 8cm-10cm.

9. The pre-mounted structure according to claim 8, characterized in that, The distance between the third endpoint and the third preset point is 5cm-7cm. The third endpoint is the endpoint of the hanging and accommodating part (42) away from the second transition part (43). The third preset point is a point on the plane where the rear panel (2) is located. The third connecting line is perpendicular to the plane where the hanging and accommodating part (42) is located. The third connecting line is the line connecting the third endpoint and the third preset point.

10. A vehicle, characterized in that, The vehicle includes the pre-attached structure as described in any one of claims 1 to 9.

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