Connecting structure and vehicle

Abstract

The utility model relates to the technical field of electric vehicles, and particularly provides a connecting structure and a vehicle. The connecting structure is used for connecting a vehicle part to a beam body in a vehicle body, and comprises a screw joint lining plate arranged in an inner cavity of the beam body, and further comprises a connecting bolt, the inner cavity penetrates through the beam body in the length direction, and at least one end of the beam body is provided with an opening through which the screw joint lining plate enters and exits the inner cavity; a through hole is formed in the side wall of the beam body, and a screw joint hole corresponding to the through hole is formed in the screw joint lining plate; the connecting bolts can penetrate through the through holes to be connected with the threaded connection holes so that the vehicle component can be connected to the beam body. According to the connecting structure disclosed by the utility model, when the conditions of thread slipping, failure and the like occur in the screw joint hole in the screw joint lining plate, a new screw joint lining plate can be replaced through the open hole; the beam body does not need to be cut and disassembled in the whole maintenance process, damage to the vehicle body structure is avoided, maintenance convenience is high, and therefore a connection scheme for connecting the bolt and the beam body is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to a connection structure. Additionally, this utility model also relates to a vehicle. Background Technology

[0002] As one of the core components of electric vehicles, the power battery pack has a large size and weight. In existing models, the power battery pack is usually installed in the vehicle's floor assembly; in practice, the power battery pack is often hoisted onto the floor longitudinal beams or sill beams in the floor assembly.

[0003] The battery pack's outer casing is equipped with a mounting plate with mounting holes. Connecting bolts are passed through these holes and screwed onto the beam, thus securing the battery pack to the floor assembly. The beam's side panels have bolt holes, or projection weld nuts are welded onto the beam. Connecting bolts are then directly screwed into the bolt holes on the beam's side panels or the projection weld nuts for tightening and securing.

[0004] However, during vehicle use, due to the heavy weight of the connecting bolts, problems such as bolt stripping and bolt hole failure often occur between the connecting bolts and the bolt holes on the beam. This problem usually requires cutting the wall panel of the beam to fix, which is difficult to repair and will cause irreversible damage to the vehicle body structure. Utility Model Content

[0005] In view of this, the present invention aims to propose a connection structure to provide a connection scheme between the connecting bolts and the beam body that is easy to inspect and maintain.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A connection structure for connecting vehicle components to a beam in a vehicle body, the connection structure including a threaded bushing disposed in an inner cavity of the beam, and further including connecting bolts;

[0008] The inner cavity is provided through the beam body along its length, and at least one end of the beam body is provided with an opening for the threaded bushing to enter and exit the inner cavity; a through hole is provided on the side wall of the beam body, and a threaded hole corresponding to the through hole is provided on the threaded bushing; the connecting bolt can pass through the through hole and connect with the threaded hole to connect the vehicle component to the beam body.

[0009] Furthermore, a positioning structure is provided between the threaded liner and the beam; the positioning structure is used to position the threaded liner so that the threaded hole and the through hole are arranged facing each other.

[0010] Furthermore, the positioning structure includes a positioning block disposed on the bolted liner and a positioning hole disposed on the beam.

[0011] Furthermore, the positioning blocks are a plurality of those spaced apart on the screw-in liner, and each positioning block is provided with a positioning hole.

[0012] Furthermore, the positioning block can extend out of the beam body through the positioning hole.

[0013] Furthermore, the threaded bushing is provided with a projection weld nut, the threaded hole is located on the projection weld nut, and the threaded bushing is provided with a through hole for the connecting bolt to pass through and enter the threaded hole; and / or, at least one edge of the threaded bushing is provided with a flange.

[0014] Furthermore, the threaded bushing has a protruding portion at one end near the opening, the protruding portion being used to guide the threaded bushing to move out of the inner cavity through the opening.

[0015] Furthermore, the protruding part is provided with a hook hole.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] In this utility model, the connection structure does not involve a direct screw connection between the connecting bolts and the beam. Instead, the connection is achieved through a screw-in liner plate located within the inner cavity of the beam. The connecting bolts pass through through holes and are screwed into screw holes on the liner plate, allowing vehicle components to be fixed to the beam. If the screw holes on the liner plate become stripped or fail, the connecting bolts can be removed first, the liner plate can be pulled out entirely through the opening, a new liner plate can be replaced, and then the vehicle components can be installed back onto the beam using the connecting bolts. The entire maintenance process does not require cutting or disassembling the beam, avoiding damage to the vehicle body structure and offering high convenience for maintenance. This provides a convenient connection solution for connecting bolts and beams.

[0018] Furthermore, by setting a positioning structure between the threaded bushing and the beam, the threaded bushing can be positioned correctly within the inner cavity during replacement, aligning the threaded hole with the corresponding through hole on the side wall to facilitate the insertion and bolting of the connecting bolts. This positioning structure not only ensures the positional accuracy of the threaded bushing but also prevents it from rotating or shifting when the connecting bolts are tightened.

[0019] In addition, a protrusion is provided at the end of the threaded liner. During maintenance and replacement, the protrusion can be pulled out from the opening first, and then the entire threaded liner can be moved out of the inner cavity of the beam using the protrusion, reducing the difficulty of removing the threaded liner. Hook holes are provided on the protrusion, allowing tools such as iron hooks to be used to hook the protrusion, making it easier to remove the threaded liner from the inner cavity.

[0020] Another objective of this invention is to provide a vehicle having a floor longitudinal beam and a battery pack, wherein the battery pack is connected to the floor longitudinal beam using the connection structure described in this invention, the battery pack constitutes a vehicle component, and the floor longitudinal beam constitutes the beam body.

[0021] Furthermore, the opening is provided with a cap, and / or, an anti-rust coating is applied between the threaded liner and the beam body.

[0022] The vehicle of this utility model possesses the technical advantages of the aforementioned connection structure. Furthermore, by applying an anti-rust coating between the bolted liner and the beam, the risk of corrosion and rust on the inner wall of the cavity and the bolted liner can be reduced. This effectively prevents the bolted liner from rusting and becoming stuck to the beam, ensuring the smooth replacement of the bolted liner. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model. The directional terms such as front / back, up / down, etc., used therein are only used to indicate relative positional relationships and do not constitute an improper limitation of this utility model. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the connection structure described in this embodiment of the invention, used between the vehicle's floor assembly and battery pack.

[0025] Figure 2 for Figure 1 A magnified view of the area shown in section A;

[0026] Figure 3 This is a top view of the screw-in liner plate described in an embodiment of the present utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the screw-in bushing described in an embodiment of the present utility model;

[0028] Figure 5 This is a partial structural diagram of the threaded liner plate disposed in the inner cavity of the beam body according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the positioning structure between the threaded liner and the beam body according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram showing the state of the protruding part being pulled out of the opening during the process of the screw-in bushing being removed from the inner cavity according to an embodiment of the present utility model;

[0031] Figure 8This is a schematic diagram showing the state of the threaded bushing when it is flipped to the vertical base plate during the process of removing the threaded bushing from the inner cavity according to an embodiment of the present invention.

[0032] Figure 9 for Figure 2 The structural schematic diagram of each component shown is viewed from another angle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Floor assembly; 2. Beam body; 2a. Front section of longitudinal beam; 2b. Rear section of longitudinal beam; 20. Inner cavity; 201. Bottom plate; 202. Side plate; 21. End plate; 210. Opening; 211. Bottom folding plate; 212. Side folding plate; 22. Positioning hole;

[0035] 3. Threaded liner; 30. Projection weld nut; 31. Locating block; 32. Protrusion; 320. Hook hole; 33. Flanged edge;

[0036] 4. Battery pack; 40. Mounting plate; 400. Abutment platform; 5. Connecting bolts; 6. Cover. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] In the description of this utility model, it should be stated that if terms indicating orientation or positional relationship, such as "up," "down," "left," "right," "front," "rear," "inner," and "outer," appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Taking the vehicle described in this utility model as an example, the directional terms such as "up," "down," "left," "right," "front," and "rear" used in the embodiments are defined based on the vehicle's vertical direction (also known as the height direction), horizontal direction (also known as the width direction), and front-back direction (also known as the length direction). Specifically, as shown in the accompanying drawings, the X direction is the vehicle's front-back direction, where the side pointed by the arrow is "front," and vice versa. The Y direction is the vehicle's horizontal direction, where the side pointed by the arrow is "left," and vice versa. The Z direction is the vehicle's vertical direction, where the side pointed by the arrow is "up," and vice versa. "Inner" and "outer" are defined based on the outline of the corresponding components. For example, "inner" and "outer" are defined based on the outline of the vehicle. The side of the vehicle outline closer to the middle of the vehicle is "inner", and the other side is "outer".

[0039] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] This embodiment relates to a connection structure for connecting vehicle components to a beam 2 in the vehicle body, providing a connection scheme between the connecting bolt 5 and the beam 2 that facilitates maintenance; an exemplary structure is as follows: Figure 1 , Figure 2 and Figure 3 As shown.

[0043] Overall, the connection structure includes a threaded bushing 3 disposed in the inner cavity 20 of the beam 2, and a connecting bolt 5. The inner cavity 20 extends through the beam 2 along its length, and at least one end of the beam 2 has an opening 210 for the threaded bushing 3 to enter and exit the inner cavity 20. Simultaneously, a through hole is formed on the side wall of the beam 2, and the threaded bushing 3 has a threaded hole corresponding to the through hole. The connecting bolt 5 can pass through the through hole and connect to the threaded hole to connect the vehicle component to the beam 2.

[0044] It should be noted that, based on the above-mentioned overall design concept, the technical solution of this utility model can adopt a variety of different specific implementation structures, forms, or configuration sequences. For example, the above-mentioned opening 210 can adopt various specific structural forms such as rectangle and circle; the number and position of the screw holes on the screw-connecting plate 3, as well as the specific assembly sequence between the connecting bolt 5 and each screw hole, can all be flexibly adjusted. For the parts required for the implementation of the overall solution but not covered in the above-mentioned overall settings, reasonable and flexible designs can be made by referring to mature design methods in the field and the actual situation during implementation. The specific implementation schemes described below in this embodiment are only one of the many solutions that can be formed by the above-mentioned combinations and variations. In actual implementation, those skilled in the art can make flexible adjustments and improvements based on the actual situation. Obviously, the many solutions that can be formed by the above-mentioned combinations and variations, as well as the specific implementation schemes of this embodiment, are all within the protection scope of this utility model.

[0045] The shape of the threaded bushing 3 should be reasonably set according to the size and shape of the inner cavity 20. Of course, there are many different specific structural schemes to choose from. In this embodiment, such as Figure 3 , Figure 4 As shown, the screw-in liner 3 is in the form of a long strip, which allows for multiple screw holes to be spaced out on the screw-in liner 3.

[0046] Meanwhile, a positioning structure is provided between the threaded bushing 3 and the beam 2 in this embodiment; this positioning structure is used to position the threaded bushing 3 so that the threaded hole and the through hole are aligned. By setting the positioning structure between the threaded bushing 3 and the beam 2, when replacing the threaded bushing 3, it can assist in placing the threaded bushing 3 in the inner cavity 20, so that the threaded hole is aligned with the corresponding through hole on the side wall, so as to perform the insertion and threading operation of the connecting bolt 5. The setting of the positioning structure not only ensures the positional accuracy of the threaded bushing 3, but also ensures that the threaded bushing 3 will not rotate or misalign when the connecting bolt 5 is tightened.

[0047] Specifically, such as Figure 3 and Figure 5 , Figure 6 As shown, the positioning structure in this embodiment includes a positioning block 31 on the threaded liner 3 and a positioning hole 22 on the beam 2. The combination of the positioning block 31 and the positioning hole 22 facilitates processing and provides good positioning performance. In this embodiment, the positioning block 31 is integrally stamped onto the threaded liner 3, forming a tongue-like shape protruding towards one side of the threaded liner 3, while the positioning hole 22 is correspondingly formed into an elongated hole shape.

[0048] The positioning blocks 31 are arranged at intervals on the threaded liner 3, and corresponding to each positioning block 31, multiple positioning holes 22 are provided on the side wall of the beam 2. Preferably, the distribution length of each positioning block 31 on the threaded liner 3 should be no less than 0.6 times the overall length of the threaded liner 3; for example, when two positioning blocks 31 are provided on the threaded liner 3, the distance between the two positioning blocks 31 is the aforementioned distribution length, which can be set to approximately two-thirds of the overall length of the threaded liner 3. This further ensures the positioning effect of the threaded liner 3 within the inner cavity 20 and guarantees the accuracy of the position of the threaded liner 3 on the inner wall of the side wall.

[0049] Still Figure 6As shown, in this embodiment, the positioning block 31 and the positioning hole 22 are in a clearance fit, and the positioning block 31 can extend out of the beam body 2 through the positioning hole 22. The clearance fit between the positioning block 31 and the positioning hole 22 facilitates the smooth insertion of the positioning block 31 into the positioning hole 22. Preferably, the clearance between the positioning block 31 and the positioning hole 22 can be set between 0.5mm and 1.5mm; for example, in the length direction of the bolted liner 3, the size of the positioning hole 22 is 1mm larger than the size of the positioning block 31. Inserting the positioning block 31 into the positioning hole 22, so that the positioning block 31 protrudes outside the beam body 2, reduces the possibility of the positioning block 31 coming out of the positioning hole 22, thus ensuring the stability of the positioning function; preferably, the size of the positioning block 31 protruding outside the beam body 2 through the positioning hole 22 is set between 0.5mm and 1.5mm, for example, the protruding size is set to 1mm.

[0050] There are, of course, several different structural options available for the setting of the threaded hole; for example, the threaded hole can be directly set on the threaded bushing 3, or a projection-welded nut 30 can be used as shown below. Figure 4 , Figure 5 As shown, the threaded bushing 3 is provided with a projection weld nut 30, and the threaded hole is located on the projection weld nut 30. The threaded bushing 3 also has a through hole for the connecting bolt 5 to pass through and enter the threaded hole. By welding the projection weld nut 30 onto the threaded bushing 3, a threaded hole for connecting the connecting bolt 5 is provided, ensuring good connection strength. Of course, the projection weld nut 30 should be welded to the other side of the threaded bushing 3, relative to the inner wall of the contact sidewall. After the connecting bolt 5 passes through the through hole, it then passes through the through hole on the threaded bushing 3 to achieve threading with the projection weld nut 30. In this way, the threaded bushing 3 can also function as a washer, greatly improving the connection strength between the connecting bolt 5 and the beam 2.

[0051] In this embodiment, the threaded bushing 3 is provided with a flange 33 on its side edge to accommodate the contact between the threaded bushing 3 and the inner wall of the side wall. Alternatively, the flange 33 can be provided only on one side of the threaded bushing 3, or as shown in the example below. Figure 4 As shown, flanges 33 are provided on both sides of the threaded liner 3. By providing flanges 33 at the edge of the threaded liner 3 (the flanges 33 should obviously be bent toward the other side of the threaded liner 3 relative to the side that contacts the inner wall), the edge of the threaded liner 3 can be prevented from scratching the side wall.

[0052] In addition, such as Figure 5 and combined Figure 7 , Figure 8As shown, in this embodiment, the threaded bushing 3 has a protrusion 32 at one end near the opening 210. This protrusion 32 is used to guide the threaded bushing 3 through the opening 210 and out of the inner cavity 20. Of course, the protrusion 32 should be narrower than the width of the main body of the threaded bushing 3, and its head is preferably designed to be semi-circular. The protrusion 32 has an overall long tongue-like structure, facilitating smooth passage through the opening 210. By providing the protrusion 32 at the end of the threaded bushing 3, during maintenance and replacement, the protrusion 32 can be pulled out of the opening 210 first, and then the entire threaded bushing 3 can be moved out of the inner cavity 20 of the beam 2 using the protrusion 32, reducing the difficulty of removing the threaded bushing 3.

[0053] Based on the above configuration, the protruding part 32 in this embodiment is also provided with a hook hole 320. By providing a hook hole 320 on the protruding part 32, tools such as iron hooks can be used to hook the protruding part 32, so as to more conveniently remove the screw-on liner 3 from the inner cavity 20.

[0054] Based on the overall setup described above, the specific operation process for replacing the bolted bushing 3 in this embodiment is as follows. (Combined with...) Figure 5 , Figure 7 and Figure 8 As shown, first, all connecting bolts 5 should be removed. Then, use needle-nose pliers to clamp the protruding part 32 through the opening 210, or use a hook to reach into the opening 210 and hook the hook hole 320. Use the needle-nose pliers or hook to apply an upward pulling force to the bolted bushing 3, causing the positioning block 31 to disengage from the positioning hole 22. Then, along... Figure 8 Pull the threaded bushing 3 out of the inner cavity 20 in the direction shown by T.

[0055] It should be noted that, in order to reduce the impact on the end structure of beam 2, the opening 210 is preferably set to a smaller size. In this embodiment, the height of the opening 210 is slightly larger than the width of the threaded bushing 3, while the width of the opening 210 is smaller than the width of the threaded bushing 3. Therefore, after the protruding portion 32 is partially removed from the opening 210, it can be... Figure 8 As shown, the entire threaded liner 3 is rotated 90° using the protrusion 32 so that the threaded liner 3 is perpendicular to the bottom plate 201 of the beam 2 (the side wall with the through hole). Then the entire threaded liner 3 can be moved out of the inner cavity 20 through the opening 210.

[0056] The new threaded bushing 3 that needs to be replaced is operated in reverse as described above. It is inserted into the inner cavity 20 through the opening 210, flipped to be horizontal, and laid on the base plate 201 so that the positioning block 31 is inserted into the corresponding positioning hole 22. Then, tighten all the connecting bolts 5.

[0057] In summary, in this embodiment, the connection structure does not involve a direct screw connection between the connecting bolt 5 and the beam 2. Instead, the connection is achieved through a screw-in liner 3 located within the inner cavity 20 of the beam 2. The connecting bolt 5 passes through a through hole and screws into the screw hole on the screw-in liner 3, allowing vehicle components to be fixed onto the beam 2. If the screw hole on the screw-in liner 3 experiences stripping or failure, the connecting bolt 5 can be removed first, and the screw-in liner 3 can be pulled out entirely through the opening 210. A new screw-in liner 3 can then be replaced, and the vehicle components can be installed onto the beam 2 using the connecting bolt 5 again. The entire maintenance process does not require cutting or disassembling the beam 2, avoiding damage to the vehicle body structure and providing high maintenance convenience. This provides a connection scheme between the connecting bolt 5 and the beam 2 that facilitates maintenance.

[0058] Example 2

[0059] This embodiment relates to a vehicle having a floor longitudinal beam and a battery pack 4. The battery pack 4 is connected to the floor longitudinal beam using the connection structure provided in Embodiment 1. The battery pack 4 constitutes the vehicle component described in Embodiment 1, and the floor longitudinal beam constitutes the beam 2 described in Embodiment 1.

[0060] Of course, beam 2 can be a crossbeam or a longitudinal beam in floor assembly 1. In this embodiment, battery pack 4 is suspended on the longitudinal beam of floor assembly 1. The longitudinal beam includes a front section 2a and a rear section 2b that are connected by overlapping. The rear end of the rear section 2b is integrally formed with an end plate 21. The cross-section of the longitudinal beam includes an integrally connected base plate 201 and side plates 202 connected to both sides of the base plate 201. The base plate 201 and the side plates 202 enclose an inner cavity 20. A threaded liner 3 is provided on the base plate 201. A positioning hole 22 is opened on the base plate 201 of the front section 2a and the rear section 2b of the longitudinal beam, respectively, and is positioned and engaged with two positioning blocks 31 on the threaded liner 3.

[0061] The end plate 21 adopts a self-welding joint structure. The bottom folded plate 211, which is bent into shape at the end of the bottom plate 201, and the side folded plates 212, which are bent into shape at the ends of the two side plates 202, overlap and are welded together to form the end plate 21, ensuring the overall structural strength of the end plate 21. The aforementioned opening 210 is made on the bottom folded plate 211, which improves the structural strength of the end of the beam 2 without affecting the disassembly and replacement of the bolted liner plate 3.

[0062] like Figure 9As shown, a cover 6 is also provided at the opening 210 in this embodiment. Since the opening 210 is relatively large, there is a risk of vehicle whistling noise. By providing the cover 6, vehicle whistling noise can be prevented, as well as preventing mud, sand, and sewage from entering the inner cavity 20. Additionally, a rust-preventive coating can be applied between the threaded bushing 3 and the beam 2. Applying a rust-preventive coating between the threaded bushing 3 and the beam 2 reduces the risk of corrosion and rust on the inner wall of the inner cavity 20 and the threaded bushing 3, effectively preventing the threaded bushing 3 from rusting and becoming stuck to the beam 2, thus ensuring the smooth replacement of the threaded bushing 3. For the rust-preventive coating, methods such as galvanizing the inner wall of the inner cavity 20, injecting wax into the inner cavity 20, or applying rust-preventive paint to the threaded bushing 3 can be used.

[0063] After the bolted bushing 3 is installed in the floor longitudinal beam, the battery pack 4 can be hoisted onto the floor longitudinal beam. The battery pack 4 has a mounting plate 40 on its side and an abutment platform 400 on the mounting plate 40. The connecting bolt 5 passes through the mounting holes on the mounting plate 40 and the abutment platform 400 and is screwed onto the bolted bushing 3 in the floor longitudinal beam. When the battery pack 4 is fixedly installed in place, the abutment platform 400 abuts against the bottom of the beam 2, ensuring the installation stability of the battery pack 4.

[0064] In practical manufacturing applications, the original threaded bushing 3 can be pre-fixed to the floor longitudinal beam using welding fixture bolts. It is then welded to other body parts along with the front floor longitudinal beam and undergoes electrophoresis to obtain an electrophoretic coating that meets the vehicle's overall rust prevention requirements. Therefore, the original threaded bushing 3 only requires galvanizing. During final assembly and battery pack 4 installation, the welding fixture bolts must be removed and replaced with Dacromet bolts.

[0065] During replacement and installation in the after-sales maintenance process, the bolted bushing 3 (aftermarket part) used for replacement is required to be galvanized and coated with electrophoretic black paint to ensure that it meets the corrosion protection requirements of the entire vehicle. Aftermarket parts are in different conditions from original parts, making them easy to distinguish; this ensures low production costs and corrosion protection performance throughout the entire production and after-sales process.

[0066] In summary, the connection structure of this utility model solves the problems of difficult maintenance after the failure of the mounting point on the side of the vehicle body during the disassembly and assembly of the battery pack 4, and damage to the vehicle body structure when the beam 2 is cut; it also reduces the difficulty and workload of maintenance operations.

[0067] The above description is merely a preferred embodiment of this utility model. Detailed explanations of configurations, examples of specific structural arrangements, and descriptions of assembly and connection methods are provided to ensure sufficient disclosure so that those skilled in the art can better implement this utility model, and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A connection structure for connecting vehicle components to a beam (2) in the vehicle body, characterized in that: The connection structure includes a threaded liner (3) disposed in the inner cavity (20) of the beam (2), and also includes connecting bolts (5); The inner cavity (20) is provided through the beam (2) along its length, and at least one end of the beam (2) is provided with an opening (210) for the bolted liner (3) to enter and exit the inner cavity (20); The beam (2) has a through hole on its side wall and the bolted liner (3) has a bolted hole corresponding to the through hole; the connecting bolt (5) can pass through the through hole and connect to the bolted hole to connect the vehicle component to the beam (2).

2. The connection structure according to claim 1, characterized in that: A positioning structure is provided between the bolted liner (3) and the beam (2); The positioning structure is used to position the screw-in bushing (3) so that the screw hole and the through hole are arranged opposite each other.

3. The connection structure according to claim 2, characterized in that: The positioning structure includes a positioning block (31) on the bolted liner (3) and a positioning hole (22) on the beam (2).

4. The connection structure according to claim 3, characterized in that: The positioning blocks (31) are a plurality of those spaced apart on the screw-in liner (3), and each positioning block (31) is provided with a positioning hole (22).

5. The connection structure according to claim 3, characterized in that: The positioning block (31) can extend out of the beam (2) through the positioning hole (22).

6. The connection structure according to claim 1, characterized in that: The threaded bushing (3) is provided with a projection weld nut (30), the threaded hole is located on the projection weld nut (30), and the threaded bushing (3) is provided with a through hole for the connecting bolt (5) to pass through and enter the threaded hole; And / or, at least one edge of the screw-in liner (3) is provided with a flange (33).

7. The connection structure according to any one of claims 1 to 6, characterized in that: The threaded bushing (3) has a protrusion (32) at one end near the opening (210), and the protrusion (32) is used to guide the threaded bushing (3) to move out of the inner cavity (20) through the opening (210).

8. The connection structure according to claim 7, characterized in that: The protruding part (32) is provided with a hook hole (320).

9. A vehicle having floor longitudinal beams and a battery pack (4), characterized in that: The battery pack (4) is connected to the floor longitudinal beam using the connection structure described in any one of claims 1 to 8. The battery pack (4) constitutes the vehicle component, and the floor longitudinal beam constitutes the beam body (2).

10. The vehicle according to claim 9, characterized in that: A cover (6) is provided at the opening (210), and / or, an anti-rust coating is applied between the threaded liner (3) and the beam (2).

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