Connecting structure, frame structure and vehicle

Abstract

The utility model relates to the technical field of automobile chassis parts, in particular to a connecting structure, a frame structure and a vehicle, and the connecting structure comprises a connecting piece and an outer wrapping plate. The connecting piece is provided with a first end part and a second end part; the outer wrapping plate comprises a first plate body part, a second plate body part and a third plate body part, and the first plate body part, the second plate body part and the third plate body part form the outer wrapping plate of a [-shaped plate body structure; and the outer wrapping plate is buckled on the connecting piece to form a cuboid shell structure. Compared with the problems that in the prior art, if a seat lug is made of an iron casting, the seat lug cannot be arranged on the vehicle beam, if a steel casting seat lug is adopted, the cost is relatively high, and the vehicle beam is prone to being damaged when the seat lug is detached, the production cost can be better controlled through the connecting structure, and the vehicle beam cannot be damaged in the seat lug maintaining process.

Description

Technical Field

[0001] This application relates to the field of automotive chassis component technology, and more specifically, to a connection structure, a frame structure, and a vehicle. Background Technology

[0002] With the development of the automotive industry, automotive frame technology has also made significant progress. Most existing buses use a monocoque chassis, with the frame generally employing rectangular tubing to form a truss structure, which, together with other parts of the vehicle's frame, creates a high-strength "cage" structure. This design greatly improves the overall rigidity and collision safety of the vehicle.

[0003] However, existing automotive chassis still have some problems. In particular, when buses use leaf spring suspension, if the leaf spring lugs are made of cast steel, although they can be directly welded to the chassis, if damage occurs later, they need to be cut off from the beam using a plasma cutter. This will undoubtedly damage the underframe and increase the time and cost of replacement. Utility Model Content

[0004] The purpose of this application is to provide a connection structure, a frame structure, and a vehicle, which can reduce production costs, facilitate the installation and removal of the seat lugs, and prevent damage to the vehicle beam during the installation and removal of the seat lugs.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application provide a connecting structure, including a connecting member and an outer cover plate. The connecting member has a first end and a second end, which are fixedly connected and vertically arranged. The outer cover plate includes a first plate body, a second plate body, and a third plate body. The first plate body is vertically fixedly connected to one end of the second plate body, and the third plate body is vertically fixedly connected to the other end of the second plate body. The first plate body, the second plate body, and the third plate body form a U-shaped plate structure for the outer cover plate. The outer cover plate is fastened to the connecting member. The first end is fixedly connected to the first plate body, the second plate body, and the third plate body, and the second end is fixedly connected to the first plate body and the third plate body, so that the outer cover plate and the connecting member combine to form a rectangular shell structure. The rectangular shell structure formed between the outer cover plate and the connecting member has a combined chamber.

[0006] In one embodiment, the connection structure further includes a support plate, which is fixedly disposed in the combined cavity. One end of the support plate is fixedly connected to the second plate body portion, and the other end of the support plate is fixedly connected to the second end portion.

[0007] In one embodiment, the number of support plates is at least two, and the at least two support plates are distributed at intervals along the length direction of the second end.

[0008] In one embodiment, the first end has a first end face and a second end face, the second end face being an end face located within the combined cavity, and the first end face being an end face away from the combined cavity and disposed opposite to the second end face; portions of the plate structure of the first plate portion, the second plate portion, and the third plate portion extend out of the second end face and form a mounting groove at the second end face.

[0009] In one embodiment, a first mating through hole is provided on the first end, and the number of the first mating through holes is at least two.

[0010] In one embodiment, a second mating through hole is provided on the second end, and the number of the second mating through holes is at least two.

[0011] In one embodiment, the connection between the first plate portion and the second plate portion is rounded, and the connection between the second plate portion and the third plate portion is rounded.

[0012] In the connection structure provided in this application, the first plate portion, the second plate portion, and the third plate portion are fixedly connected to the vehicle beam, and then the seat lugs are detachably installed on the first end and / or the second end, which facilitates the installation and removal of the seat lugs. Moreover, the connection structure and the vehicle beam are not damaged during the installation and removal of the seat lugs. Compared with the prior art, which has the problem that if the seat lugs are made of cast iron, they cannot be installed on the vehicle beam, and if cast steel seat lugs are used, the cost is relatively high and the vehicle beam is easily damaged when the seat lugs are removed, the connection structure of this application can better control production costs and can maintain the vehicle beam without damaging it during the maintenance of the seat lugs.

[0013] Secondly, embodiments of this application also provide a vehicle frame structure, including a vehicle beam and a connecting structure as described in any of the above embodiments, the connecting structure being mounted on the vehicle beam.

[0014] In one embodiment, the frame structure further includes a seat lug, the seat lug having a vertical plate portion, a horizontal plate portion and a seat body portion, the horizontal plate portion being fixed to the seat body portion, the horizontal plate portion being vertically fixedly connected to the vertical plate portion, the horizontal plate portion being parallel fixedly connected to the second end portion, and the vertical plate portion being parallel fixedly connected to the first end portion.

[0015] Thirdly, embodiments of this application also provide a vehicle including the frame structure described in any of the above embodiments.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of one embodiment of the vehicle frame structure provided in this application;

[0019] Figure 2 A two-view structural schematic diagram of one embodiment of a vehicle frame structure provided in this application;

[0020] Figure 3 A three-view structural schematic diagram of one embodiment of a connection structure provided in this application;

[0021] Figure 4 A four-view structural schematic diagram of one embodiment of a connection structure provided in this application;

[0022] Figure 5 A five-view structural schematic diagram of another embodiment of a connection structure provided in this application;

[0023] Figure 6 A six-view structural schematic diagram of another embodiment of a connection structure provided in this application;

[0024] Figure 7 A three-view structural schematic diagram of another embodiment of a connection structure provided in this application;

[0025] Figure 8 A four-view structural schematic diagram of another embodiment of a connection structure provided in this application;

[0026] Figure 9 A three-view structural schematic diagram of yet another embodiment of a connection structure provided in this application;

[0027] Figure 10 A six-view structural schematic diagram of another embodiment of a connection structure provided in this application;

[0028] Figure 11 A seven-view structural schematic diagram of a portion of one embodiment of a vehicle frame structure provided in this application;

[0029] Figure 12 This is an eight-view structural schematic diagram of a portion of one embodiment of a vehicle frame structure provided in this application.

[0030] icon:

[0031] 100 - Connector; 110 - First end; 112 - First end face; 114 - Second end face; 116 - First mating through hole; 120 - Second end; 122 - Second mating through hole;

[0032] 200 - Outer panel; 210 - First panel body; 220 - Second panel body; 230 - Third panel body;

[0033] 300 - Combined chamber; 350 - Mounting slot;

[0034] 400-Support plate;

[0035] 500 - Ear; 510 - Vertical plate; 520 - Horizontal plate; 530 - Seat body;

[0036] 600 - Vehicle beam; 1000 - Vehicle frame structure. Detailed Implementation

[0037] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] Automotive chassis technology presents challenges, especially when buses use leaf spring suspension. While cast steel leaf spring lugs can be welded, they are difficult to replace once damaged and can easily damage the chassis.

[0041] To address the problem that repairing the seat lugs in the prior art can damage the vehicle frame, this application provides a connection structure, a vehicle frame structure, and a vehicle. The connection structure provides a mounting base for the seat lugs to connect to the vehicle frame, thereby reducing production costs, facilitating the installation and removal of the seat lugs, and preventing damage to the vehicle frame during the installation and removal process.

[0042] In the first aspect, the embodiments of this application provide a connection structure, which adopts the structure of the connector 100 and the outer cover plate 200 to achieve a reliable and firm connection between the frame and the seat ear 500, facilitates the assembly and disassembly of the seat ear 500 on the vehicle beam 600, and does not damage the vehicle beam 600 during the assembly and disassembly of the seat ear 500.

[0043] The connection structure includes an outer plate 200 and a connector 100.

[0044] like Figure 3 or Figure 7 As shown, the connector 100 has a first end 110 and a second end 120, which are fixedly connected and vertically arranged. Exemplarily, the first end 110 and the second end 120 are fixedly connected by welding or integral molding.

[0045] like Figure 3 or Figure 7 As shown, the outer panel 200 is a C-shaped panel. The outer panel 200 includes a first panel portion 210, a second panel portion 220, and a third panel portion 230. The first panel portion 210 is vertically fixed to one end of the second panel portion 220, and the third panel portion 230 is vertically fixed to the other end of the second panel portion 220. Thus, the outer panel 200, which is composed of the first panel portion 210, the second panel portion 220, and the third panel portion 230, has a C-shaped panel structure.

[0046] For example, the first plate portion 210 and the second plate portion 220 are fixedly connected by welding or integral molding. For example, the third plate portion 230 and the second plate portion 220 are fixedly connected by welding or integral molding.

[0047] like Figure 3 or Figure 7 As shown, the U-shaped plate structure is fastened onto the connector 100, and the first end 110 is fixedly connected to the first plate portion 210, the second plate portion 220 and the third plate portion 230. This fixed connection may be, for example, by welding or integral molding.

[0048] The second end portion 120 is fixedly connected to the first plate portion 210 and the third plate portion 230, such fixed connection being, for example, by welding or integral molding.

[0049] The outer cover plate 200 is fixedly connected to the first end 110 and the second end 120 respectively, so that the outer cover plate 200 and the connecting member 100 are combined to form a cuboid shell structure, which improves the shear and tensile strength and bending load-bearing capacity of the combination of the connecting member 100 and the outer cover plate 200, and realizes the impact-resistant connection between the connecting member 100 and the outer cover plate 200; the rectangular shell structure formed between the outer cover plate 200 and the connecting member 100 has a combined chamber 300, that is, it realizes the space within the shell structure formed by the combination of the connecting member 100 and the outer cover plate 200, which facilitates the operation of installing other components, such as facilitating the setting of bolts and other connecting members.

[0050] In this embodiment, the cuboid shell structure used in the connection structure, through the connection of the two opposite ends (first end 110 and second end 120) of the connector 100 to the outer plate 200, improves the shear and tensile strength and bending load-bearing capacity of the connector 100 and the outer plate 200, thereby improving the structural robustness of the connector 100 and the outer plate 200.

[0051] During use, the first plate portion 210, the second plate portion 220, and the third plate portion 230 are fixedly connected to the vehicle beam 600. Then, the lug 500 is detachably installed on the first end 110 and / or the second end 120, which facilitates the installation and removal of the lug 500. Furthermore, the installation and removal of the lug 500 does not damage the connecting structure or the vehicle beam 600. Compared with the prior art, which has the problem that if the lug 500 is made of cast iron, it cannot be installed on the vehicle beam 600, and if the lug 500 is made of cast steel, the cost is relatively high and the vehicle beam 600 is easily damaged when the lug 500 is removed, the connecting structure of this application can better control production costs and can maintain the vehicle beam 600 without damaging it during the maintenance of the lug 500.

[0052] In this embodiment, a cuboid structure is installed on the vehicle beam 600, which results in a large contact area between the connecting structure and the vehicle beam 600, uniform stress distribution, improved connection rigidity, and enhanced strength and stability of the connecting structure.

[0053] like Figure 3 , Figure 5 , Figure 7 or Figure 9 As shown, in one embodiment, the connection structure further includes a support plate 400, which is fixedly disposed in the combined chamber 300. One end of the support plate 400 is fixedly connected to the second plate body portion 220, and the other end of the support plate 400 is fixedly connected to the second end portion 120.

[0054] For example, the support plate 400 and the second plate body 220 are fixedly connected by welding or integral molding. For example, the support plate 400 and the second end portion 120 are fixedly connected by welding or integral molding.

[0055] The support plate 400 plays a supporting and reinforcing role in the combined chamber 300. It connects the second plate body 220 and the second end 120, further enhancing the stability and rigidity of the entire connection structure.

[0056] By adding a support plate 400, the connection structure can better withstand forces and pressures from different directions, thus improving the overall load-bearing capacity.

[0057] The addition of support plate 400 helps to distribute the stress inside the connection structure more evenly, reducing the risk of structural damage caused by stress concentration.

[0058] like Figure 3 or Figure 7 As shown, in one embodiment, the number of support plates 400 is at least two, and the at least two support plates 400 are distributed sequentially at intervals along the length direction of the second end 120.

[0059] For example, two support plates 400 are provided, and the two support plates 400 are distributed at intervals along the length direction of the second end 120.

[0060] In another embodiment, three support plates 400 are provided, and the three support plates 400 are distributed at intervals along the length direction of the second end 120.

[0061] In another embodiment, four support plates 400 are provided, and the four support plates 400 are distributed at intervals along the length direction of the second end 120.

[0062] In another embodiment, five support plates 400 are provided, and the five support plates 400 are distributed at intervals along the length direction of the second end 120.

[0063] In another embodiment, six support plates 400 are provided, and the six support plates 400 are distributed at intervals along the length direction of the second end 120. Of course, seven, eight, or nine support plates 400 can also be provided, etc.

[0064] Multiple support plates 400 are spaced apart along the length of the second end 120, which can more effectively disperse and bear forces and pressures from different directions, thereby further enhancing the stability and rigidity of the entire connection structure. With the increase in the number of support plates 400, the connection structure can withstand greater loads, improving its overall load-bearing capacity and making it more suitable for heavy-duty or high-load applications. The arrangement of multiple support plates 400 helps to distribute stress more evenly within the connection structure, reducing the risk of structural damage due to stress concentration and extending the structure's service life. When subjected to external impacts or vibrations, the multiple support plates 400 can work together to absorb and disperse impact energy, thereby enhancing the impact resistance of the connection structure.

[0065] like Figure 3 and Figure 4 As shown, in one embodiment, the first end portion 110 has a first end face 112 and a second end face 114; as Figure 3 As shown, the second end face 114 is the end face located within the combined chamber 300; as Figure 4 As shown, the first end face 112 is the end face away from the combined chamber 300 and is disposed opposite to the second end face 114.

[0066] like Figure 4 or Figure 8 As shown, portions of the plate structure of the first plate portion 210, the second plate portion 220, and the third plate portion 230 extend beyond the second end face 114 and form a mounting groove 350 at the second end face 114. The mounting groove has an opening, which facilitates the installation of the lug 500 into the mounting groove; as shown Figure 6 or Figure 10 As shown, the mounting groove provides a mounting position for the lug 500, and the inner wall of the mounting groove restricts the rotation of the lug 500.

[0067] The design of the mounting slot allows the lug 500 to be precisely positioned in the predetermined location, ensuring proper alignment and tight fit between the lug 500 and the connecting structure.

[0068] By constraining the lug 500 by the inner wall of the mounting groove, the rotation of the lug 500 after installation is effectively limited, thereby improving the stability and reliability of the entire structure.

[0069] like Figure 3 or Figure 7 As shown, in one embodiment, a first mating through hole 116 is provided on the first end 110, and the number of first mating through holes 116 is at least two. Figure 5 or Figure 9 As shown, a bolt can be installed at the first mating through hole, so that the lug 500 and the first end 110 can be detachably connected by the bolt.

[0070] like Figure 7 and Figure 8 As shown, exemplarily, two first mating through holes are provided, and the two first mating through holes are spaced apart. For example... Figure 3 and Figure 4 As shown, in another embodiment, three first mating through holes are provided, and the three first mating through holes are spaced apart.

[0071] In another embodiment, four first mating through holes are provided, and the four first mating through holes are spaced apart.

[0072] In another embodiment, five first mating through holes are provided, spaced apart from each other. Of course, six, seven, or other first mating through holes can also be provided.

[0073] By using at least two spaced-apart first mating through holes 116 and corresponding bolt connections, the lug 500 can be more securely connected to the first end 110, improving the reliability and stability of the entire structure. This multi-point connection method helps to distribute stress and pressure at the connection points, reducing the risk of connection failure due to excessive stress at a single point.

[0074] Bolted connections are a detachable connection method, allowing the lug 500 to be easily installed and removed. This design facilitates subsequent maintenance and replacement work, reducing maintenance costs and time.

[0075] The system features at least two first mating through-holes 116, providing flexibility for adjustment and calibration. During installation, the position and angle of the lug 500 can be adjusted by selecting different through-hole positions to meet specific installation requirements.

[0076] like Figure 3 or Figure 7 As shown, in one embodiment, a second mating through hole 122 is provided on the second end 120, and the number of second mating through holes 122 is at least two. Figure 5 or Figure 9 As shown, bolts can be installed at the second mating through hole, so that the lug 500 and the second end 120 can be detachably connected by bolts.

[0077] like Figure 7 and Figure 8 As shown, exemplarily, two second mating through holes are provided, and the two second mating through holes are spaced apart. For example... Figure 3 and Figure 4 As shown, in another embodiment, three second mating through holes are provided, and the three second mating through holes are spaced apart.

[0078] In another embodiment, four second mating through holes are provided, and the four second mating through holes are spaced apart.

[0079] In another embodiment, five second mating through holes are provided, spaced apart. Of course, six, seven, or other types of second mating through holes can also be provided.

[0080] Multiple second mating through holes 122 and corresponding bolt connections can enhance the structural strength and rigidity of the second end 120. This multi-point connection method helps to distribute stress and pressure at the connection points, improving the load-bearing capacity and stability of the entire structure.

[0081] The removable nature of the bolted connection allows the lug 500 to be easily installed onto the second end 120, and to be disassembled and adjusted as needed. This design facilitates subsequent maintenance and replacement work, while also allowing for necessary calibration and adjustment during installation.

[0082] The presence of at least two second mating through holes 122 provides flexibility for adjustment and calibration. During installation, the position and angle of the lug 500 can be adjusted by selecting different through hole positions to meet specific installation requirements.

[0083] like Figure 4 or Figure 8 As shown, in one embodiment, the connection between the first plate portion 210 and the second plate portion 220 is rounded, and the connection between the second plate portion 220 and the third plate portion 230 is rounded.

[0084] Rounding corners helps to disperse stress concentration at joints, reducing the risk of structural damage caused by stress concentration. In mechanical structures, stress concentration is often one of the main causes of component breakage or failure. By rounding corners, the strength and durability of the joint can be effectively improved.

[0085] Rounding the corners makes the connection smoother, which is beneficial for subsequent processing and assembly work. For example, it makes it easier to install the connection structure onto the 600 beam and reduces the obstruction during the installation process.

[0086] Rounding corners removes sharp edges from joints, reducing the risk of injury to users. During the operation of mechanical structures, workers or other personnel may come into contact with these joints; rounding corners significantly reduces the likelihood of accidental injury.

[0087] Secondly, embodiments of this application provide a frame structure 1000, such as... Figure 1 and Figure 2 As shown, the frame structure 1000 includes a beam 600 and a connecting structure as described in any of the above embodiments, the connecting structure being disposed on the beam 600.

[0088] For example, a slot is provided on one side of the vehicle beam 600 near the connecting structure. The slot is a C-shaped groove structure. The first plate part 210, the second plate part 220 and the third plate part 230 are fixedly connected to the inner wall of the slot. The fixed connection method includes, but is not limited to, welding, riveting and so on.

[0089] At least one of these connecting structures is provided on the beam 600. Exemplarily, one connecting structure is provided on the beam 600. In one embodiment, such as... Figure 1 and Figure 2As shown, the beam 600 has two connecting structures. In another embodiment, the beam 600 has four connecting structures. Of course, other numbers of connecting structures can also be provided, such as six, eight, or nine.

[0090] The frame structure adopts the connection structure in any of the above embodiments. This mechanical connection structure provides an installation position for the seat lugs. The removal of the seat lugs can be completed without cutting the frame structure, without damaging the frame, thus ensuring the integrity and stability of the frame.

[0091] like Figure 1 and Figure 2 As shown, in one embodiment, the frame structure 1000 further includes a lug 500, which is mounted on the beam 600 via a connecting structure.

[0092] like Figure 11 and Figure 12 As shown, the lug 500 has a vertical plate portion 510, a horizontal plate portion 520, and a seat portion 530.

[0093] The horizontal plate portion 520 is fixed to the base portion 530. For example, the horizontal plate portion 520 and the base portion 530 are fixedly connected by welding, riveting or integral molding.

[0094] The horizontal plate portion 520 and the vertical plate portion 510 are vertically fixedly connected. For example, the horizontal plate portion 520 and the vertical plate portion 510 are fixedly connected by welding, riveting or integral molding.

[0095] The horizontal plate portion 520 is fixedly connected to the second end portion 120 in parallel, for example, as shown in the example. Figure 5 or Figure 9 As shown, the horizontal plate portion 520 and the second end portion 120 are detachably fixedly connected by bolts, with the bolts passing through the second mating through hole 122 on the second end portion 120.

[0096] The vertical plate portion 510 is fixedly connected to the first end portion 110 in parallel, for example, as shown in the example. Figure 6 or Figure 10 As shown, the vertical plate portion 510 and the first end portion 110 are detachably fixedly connected by bolts, with the bolts passing through the first mating through hole 116 on the first end portion 110.

[0097] Thirdly, embodiments of this application also provide a vehicle that employs a frame structure 1000 as described in any of the above embodiments.

[0098] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0099] The above description is merely a preferred embodiment of this application and is not intended to limit 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 protection scope of this application.

Claims

1. A connection structure, characterized in that, include: A connector (100) having a first end (110) and a second end (120) fixedly connected and vertically arranged; An outer panel (200) includes a first panel portion (210), a second panel portion (220), and a third panel portion (230). The first panel portion (210) is vertically fixedly connected to one end of the second panel portion (220), and the third panel portion (230) is vertically fixedly connected to the other end of the second panel portion (220). The first panel portion (210), the second panel portion (220), and the third panel portion (230) form an U-shaped panel structure for the outer panel (200). The outer cover plate (200) is fastened to the connector (100). The first end (110) is fixedly connected to the first plate body (210), the second plate body (220) and the third plate body (230). The second end (120) is fixedly connected to the first plate body (210) and the third plate body (230) so that the outer cover plate (200) and the connector (100) are combined to form a cuboid shell structure. The cuboid shell structure formed between the outer cover plate (200) and the connector (100) has a combined chamber (300).

2. The connection structure according to claim 1, characterized in that, Also includes: A support plate (400) is fixedly disposed in the combined chamber (300). One end of the support plate (400) is fixedly connected to the second plate body part (220), and the other end of the support plate (400) is fixedly connected to the second end part (120).

3. The connection structure according to claim 2, characterized in that, The number of the support plates (400) is at least two, and the at least two support plates (400) are distributed sequentially at intervals along the length direction of the second end (120).

4. The connection structure according to claim 1, characterized in that, The first end (110) has a first end face (112) and a second end face (114), the second end face (114) being an end face located inside the combined chamber (300), and the first end face (112) being an end face away from the combined chamber (300) and disposed opposite to the second end face (114); Parts of the plate structure of the first plate portion (210), the second plate portion (220) and the third plate portion (230) extend out of the second end face (114) and form a mounting groove (350) at the second end face (114).

5. The connection structure according to claim 1, characterized in that, The first end (110) is provided with a first mating through hole (116), and the number of the first mating through holes (116) is at least two.

6. The connection structure according to claim 1, characterized in that, The second end (120) is provided with a second mating through hole (122), and the number of the second mating through holes (122) is at least two.

7. The connection structure according to claim 1, characterized in that, The connection between the first plate portion (210) and the second plate portion (220) is rounded, and the connection between the second plate portion (220) and the third plate portion (230) is rounded.

8. A vehicle frame structure, characterized in that, include: Vehicle beam (600); The connection structure as described in any one of claims 1 to 7 is mounted on the vehicle beam (600).

9. A vehicle frame structure according to claim 8, characterized in that, Also includes: The ear (500) has a vertical plate portion (510), a horizontal plate portion (520) and a seat body portion (530). The horizontal plate portion (520) is fixed to the seat body portion (530). The horizontal plate portion (520) is vertically fixed to the vertical plate portion (510). The horizontal plate portion (520) is parallel to the second end portion (120) and the vertical plate portion (510) is parallel to the first end portion (110).

10. A vehicle, characterized in that, include: The frame structure (1000) as described in claim 9.

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