A skateboard chassis and vehicle body connection device, structure and automobile

Abstract

This utility model provides a connection device, structure, and automobile for a skateboard chassis and vehicle body. The connection device includes at least one drive component, multiple nuts, and multiple lead screws. The nuts have internal threads and are connected to the drive component for transmission. The nuts are used for rotatable connection with the skateboard chassis or vehicle body. The lead screws are paired with the nuts, and each lead screw has an external thread that mates with the internal thread. The lead screws are used for fixed connection with the skateboard chassis or vehicle body. This connection device, through the threaded engagement of the nuts and lead screws, achieves one-click separation and one-click connection between the skateboard chassis and vehicle body, offering greater flexibility compared to traditional welding or riveting methods.

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology, and more specifically, relates to a skateboard chassis and body connection device, structure, and automobile. Background Technology

[0002] With the rapid development of the automotive industry towards electrification, intelligence, and modularization, skateboard chassis technology, as an innovative automotive architecture design, has received increasing attention. The skateboard chassis integrates key components such as the vehicle's battery, motor, and electronic control system onto the chassis, while the body is connected to the chassis as an independent module. This design not only improves the vehicle's space utilization but also facilitates the rapid development and production of different vehicle models. However, existing skateboard chassis and body connection technologies still face some unresolved issues.

[0003] Currently, the connection structure between the skateboard chassis and the frame is generally bolted. After the bolts are tightened in the car factory, they are fixed and cannot be separated from the skateboard chassis and frame with one click. There is a lack of structural technology that can quickly and automatically unlock and separate the skateboard chassis and frame. Similarly, there is a lack of technology that can automatically lock the skateboard chassis and frame with one click. Utility Model Content

[0004] The purpose of this utility model is to provide a skateboard chassis and vehicle body connection device, structure and automobile, to solve the problem that the existing skateboard chassis and vehicle body connection structure cannot be separated and locked with one key.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a skateboard chassis and vehicle body connection device, comprising:

[0006] At least one drive component;

[0007] Multiple nuts, each nut having an internal thread, are connected to the drive component for transmission, and are used for rotatable connection with the skateboard chassis or body;

[0008] Multiple lead screws are provided, with each lead screw paired with a nut. Each lead screw has an external thread that mates with the internal thread. The lead screw is used to fix and connect to the skateboard chassis or the vehicle body.

[0009] Optionally, the connecting device is used for a square tube structure skateboard chassis and a square tube structure body;

[0010] The nut has an upper extension extending radially on its outer periphery. The upper surface of the upper extension has a first lower raceway. An upper pressure ring is provided above the upper extension. The lower surface of the inner ring of the upper pressure ring has a first upper raceway. A plurality of rolling elements are provided between the first lower raceway and the first upper raceway. The outer ring of the upper pressure ring is used to fix it to the top wall of the square tube.

[0011] The lower outer periphery of the nut is provided with a radially extending lower extension. The lower surface of the lower extension is provided with a second upper raceway. A lower pressure ring is provided below the lower extension. The upper surface of the inner ring of the lower pressure ring is provided with a second lower raceway. Multiple rolling elements are provided between the second upper raceway and the second upper raceway. The outer ring of the lower pressure ring is used to fix it to the bottom wall of the square tube.

[0012] Optionally, the lead screw includes:

[0013] A threaded section, wherein the external thread is provided on the outer periphery of the threaded section, and the threaded section is used to be provided on the outside of the square tube to cooperate with the nut;

[0014] A connecting section is fixedly connected to the threaded section, and the connecting section is used to be fixedly installed inside the square tube.

[0015] Optionally, the outer periphery of the nut is provided with a first gear and a second gear, and multiple nuts are sequentially connected by the first gear, the second gear and multiple chains;

[0016] The output end of the drive component passes through the outer wall of the square tube, and the output end of the drive component is provided with a third gear. At least one of the third gears of the drive component meshes with the first gear of one of the nuts.

[0017] Optionally, the outer diameter of the first gear is larger than the outer diameter of the third gear.

[0018] Optionally, the plurality of nuts are arranged in a straight line, and there are two drive components, with each nut at one end connected to a drive component.

[0019] Secondly, this utility model provides a connection structure between a skateboard chassis and a vehicle body, comprising:

[0020] skateboard chassis;

[0021] Body;

[0022] The connecting device described in the first aspect, wherein the skateboard chassis and the vehicle body are connected by a plurality of the connecting devices.

[0023] Optionally, the skateboard chassis includes: a front crossbeam, a middle crossbeam, a rear crossbeam, a left front longitudinal beam, a right front longitudinal beam, a left rear longitudinal beam, and a right rear longitudinal beam.

[0024] The vehicle body includes: a front crossbeam, a middle crossbeam, a rear crossbeam, a left front longitudinal beam, a right front longitudinal beam, a left rear longitudinal beam, and a right rear longitudinal beam.

[0025] A total of seven connecting devices are provided. The front crossbeam of the chassis is connected to the front crossbeam of the vehicle body through the first connecting device. The middle crossbeam of the chassis is connected to the middle crossbeam of the vehicle body through the second connecting device. The rear crossbeam of the chassis is connected to the rear crossbeam of the vehicle body through the third connecting device. The left front longitudinal beam of the chassis is connected to the left front longitudinal beam of the vehicle body through the fourth connecting device. The right front longitudinal beam of the chassis is connected to the right front longitudinal beam of the vehicle body through the fifth connecting device. The left rear longitudinal beam of the chassis is connected to the left rear longitudinal beam of the vehicle body through the sixth connecting device. The right rear longitudinal beam of the chassis is connected to the right rear longitudinal beam of the vehicle body through the seventh connecting device.

[0026] Optionally, the lead screw, the nut, and the drive component disposed on the skateboard chassis are all lower than the highest point of the skateboard chassis;

[0027] The lead screw, the nut, and the drive component, all located on the vehicle body, are all higher than the lowest point of the skateboard chassis.

[0028] Thirdly, this utility model provides an automobile, comprising:

[0029] The connection structure described in the second aspect.

[0030] The beneficial effects of this utility model are as follows: It provides a skateboard chassis and frame connection device, including: at least one drive component, multiple nuts and multiple lead screws. The nuts are provided with internal threads and are drively connected to the drive component. The nuts are used for rotatable connection with the skateboard chassis or frame. The lead screws are arranged in pairs with the nuts, and the lead screws are provided with external threads that mate with the internal threads. The lead screws are used for fixed connection with the skateboard chassis or frame. This connection device achieves one-click separation and one-click connection between the skateboard chassis and frame through the threaded engagement of the nuts and lead screws, which has higher flexibility compared to traditional welding or riveting methods.

[0031] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0032] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0033] Figure 1 A schematic structural diagram of a skateboard chassis and vehicle body connection device according to an embodiment of the present invention is shown.

[0034] Figure 2The diagram shows an external schematic structural diagram of a skateboard chassis and body connection device installed on the skateboard chassis 8 and body 9 according to an embodiment of the present invention.

[0035] Figure 3 The diagram shows an internal schematic structure of a skateboard chassis and body connection device installed on a skateboard chassis 8 and a body 9 according to an embodiment of the present invention.

[0036] Figure 4 A partial schematic structural diagram of a skateboard chassis and vehicle body connection device according to an embodiment of the present invention is shown.

[0037] Figure 5 A schematic structural diagram of a portion of the skateboard chassis and body connection device of an embodiment of the present invention is shown, which is installed on a square tube.

[0038] Figure 6 A schematic structural diagram of the lead screw 6 according to an embodiment of the present invention is shown.

[0039] Figure 7 One of the schematic structural diagrams of a plurality of skateboard chassis and body connection devices installed on a skateboard chassis 8 according to an embodiment of the present invention is shown.

[0040] Figure 8 The second schematic structural diagram shows a plurality of skateboard chassis and body connection devices installed on a skateboard chassis 8 according to an embodiment of the present invention.

[0041] Figure 9 It shows Figure 7 and Figure 8 A schematic diagram showing the arrangement of multiple skateboard chassis and vehicle body connection devices.

[0042] Figure 10 A schematic structural diagram of a skateboard chassis and vehicle body connection device according to an embodiment of the present invention is shown, which is installed on the vehicle body 9.

[0043] Figure 11 It shows Figure 10 A schematic diagram showing the arrangement of multiple skateboard chassis and vehicle body connection devices.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Drive component; 11. Third gear;

[0046] 2. Nut; 21. Upper extension; 22. Lower extension; 23. First gear; 24. Second gear;

[0047] 3. Upper pressure ring;

[0048] 4. Lower pressure ring;

[0049] 5. Rolling elements;

[0050] 6. Lead screw; 61. Threaded section; 62. Connecting section;

[0051] 7. Chain;

[0052] 8. Skateboard chassis; 81. Front crossbeam of chassis; 82. Middle crossbeam of chassis; 83. Rear crossbeam of chassis; 84. Front left longitudinal beam of chassis; 85. Front right longitudinal beam of chassis; 86. Rear left longitudinal beam of chassis; 87. Rear right longitudinal beam of chassis;

[0053] 9. Body; 91. Front crossbeam; 92. Middle crossbeam; 93. Rear crossbeam; 94. Left front longitudinal beam; 95. Right front longitudinal beam; 96. Left rear longitudinal beam; 97. Right rear longitudinal beam;

[0054] 10. Square tube. Detailed Implementation

[0055] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0056] Example

[0057] like Figure 1-4 As shown, this embodiment provides a skateboard chassis and vehicle body connection device, including:

[0058] At least one drive component 1;

[0059] Multiple nuts 2, each nut 2 having an internal thread, are connected to the drive component 1 for transmission, and are used to be rotatably connected to the skateboard chassis 8 or the body 9.

[0060] Multiple lead screws 6 are provided, with lead screws 6 and nuts 2 arranged in pairs. Lead screws 6 are provided with external threads that mate with internal threads. Lead screws 6 are used for fixed connection with the skateboard chassis 8 or the body 9.

[0061] During the connection process between the skateboard chassis 8 and the body 9, multiple lead screws 6 are inserted into the threaded holes of the corresponding nuts 2. The drive component 1 is activated in a forward motion, causing the multiple nuts 2 to rotate in the forward direction. The internal threads of the nuts 2 engage with the external threads of the lead screws 6, converting the rotation of the nuts 2 into radial movement of the lead screws 6. The skateboard chassis 8 and the body 9 move closer together until they are in contact. During the separation process between the skateboard chassis 8 and the body 9, the drive component 1 is activated in a reverse motion, causing the multiple nuts 2 to rotate in the reverse direction. The internal threads of the nuts 2 engage with the external threads of the lead screws 6, converting the rotation of the nuts 2 into radial movement of the lead screws 6. The skateboard chassis 8 and the body 9 move further apart until they are completely separated.

[0062] In this embodiment, the driving component 1 is a motor.

[0063] Specifically, the connecting device achieves one-click separation and one-click connection between the skateboard chassis 8 and the body 9 through the threaded engagement of the nut 2 and the lead screw 6, which is more flexible than the traditional welding or riveting methods.

[0064] Optionally, the connecting device is used for the skateboard chassis 8 of the square tube 10 structure and the body 9 of the square tube 10 structure;

[0065] like Figure 5 As shown, the upper outer periphery of the nut 2 is provided with an upper extension 21 extending radially. The upper surface of the upper extension 21 is provided with a first lower raceway. An upper pressure ring 3 is provided above the upper extension 21. The lower surface of the inner ring of the upper pressure ring 3 is provided with a first upper raceway. A plurality of rolling elements 5 are provided between the first lower raceway and the first upper raceway. The outer ring of the upper pressure ring 3 is used to fix it to the top wall of the square tube 10.

[0066] The lower outer periphery of the nut 2 is provided with a radially extending lower extension 22. The lower surface of the lower extension 22 is provided with a second upper raceway. A lower pressure ring 4 is provided below the lower extension 22. The upper surface of the inner ring of the lower pressure ring 4 is provided with a second lower raceway. A plurality of rolling elements 5 are provided between the second upper raceway and the second upper raceway. The outer ring of the lower pressure ring 4 is used to fix it to the bottom wall of the square tube 10.

[0067] In this embodiment, the rolling element 5 is a ball bearing. The top and bottom walls of the square tube 10 are provided with first through holes corresponding to the nut 2. The nut 2 is installed in the cavity of the square tube 10 at the position corresponding to the first through hole. The lower surface of the outer ring of the upper pressure ring 3 is welded and fixed to the upper surface of the top wall of the square tube 10. The first upper raceway of the upper pressure ring 3 passes through the first through hole of the top wall and rotates with the first lower raceway of the nut 2. The upper surface of the outer ring of the lower pressure ring 4 is welded and fixed to the lower surface of the bottom wall of the square tube 10. The second lower raceway of the lower pressure ring 4 passes through the first through hole of the bottom wall and rotates with the second upper raceway of the nut 2.

[0068] Specifically, this connecting device is designed for the skateboard chassis 8 and body 9 with a square tube 10 structure. It can make full use of the internal space of the square tube 10 and arrange the nut 2 inside the square tube 10 in a reasonable way, which saves space and ensures the compactness and integrity of the structure. In addition, the rolling element 5 greatly reduces the frictional resistance of the nut 2 during rotation, improves the transmission efficiency, reduces wear, and extends the service life of the components.

[0069] like Figure 6 As shown, optionally, the lead screw 6 includes:

[0070] Threaded section 61, with external thread provided on the outer periphery of threaded section 61, is used to be provided on the outside of square tube 10 to cooperate with nut 2;

[0071] Connecting section 62 is fixedly connected to threaded section 61. Connecting section 62 is used to fix it inside the square tube 10.

[0072] Optionally, the outer periphery of the nut 2 is provided with a first gear 23 and a second gear 24, and multiple nuts 2 are sequentially connected by the first gear 23, the second gear 24 and multiple chains 7;

[0073] The output end of the drive component 1 passes through the outer wall of the square tube 10. The output end of the drive component 1 is provided with a third gear 11. At least one third gear 11 of the drive component 1 meshes with the first gear 23 of a nut 2.

[0074] Specifically, by setting a first gear 23 and a second gear 24 on the nut 2 and connecting multiple nuts 2 with a chain 7, multi-point synchronous transmission is achieved. This not only improves the stability of the transmission, but also enables the operation of multiple nuts 2 to be controlled by a smaller number of drive components 1, reducing weight and saving costs.

[0075] Optionally, the outer diameter of the first gear 23 is larger than the outer diameter of the third gear 11.

[0076] Specifically, the outer diameter of the first gear 23 is larger than that of the third gear 11, which can reduce speed and increase torque, significantly reducing the power of the drive component 1 and lowering costs.

[0077] like Figure 1 and 2 As shown, optionally, multiple nuts 2 are arranged in a straight line, and two drive components 1 are provided, with each end nut 2 connected to a drive component 1.

[0078] In this embodiment, the connecting device includes four nuts 2 and two driving components 1. The four nuts 2 are arranged in a straight line. The first gear 23 of the first nut 2 is connected to the first gear 23 of the second nut 2 via a chain 7. The second gear 24 of the second nut 2 is connected to the second gear 24 of the third nut 2 via a chain 7. The first gear 23 of the third nut 2 is connected to the first gear 23 of the fourth nut 2 via a chain 7. The third gear 11 of the first driving component 1 meshes with the first gear 23 of the first nut 2, and the third gear 11 of the second driving component 1 meshes with the first gear 23 of the fourth nut 2. Both the first and second driving components 1 are located inside the chain 7 to avoid interference between the driving device and the chain 7.

[0079] Specifically, two drive components 1 drive four nuts 2, reducing the number of drive components 1 and lowering costs. Furthermore, the two-end drive method improves system redundancy; even if one drive component 1 fails, the entire device can still function, enhancing system reliability.

[0080] like Figure 7-11 As shown, this embodiment also provides a connection structure between a skateboard chassis and a vehicle body, including:

[0081] Skateboard chassis 8;

[0082] Body 9;

[0083] In this embodiment, the connecting device connects the skateboard chassis 8 and the vehicle body 9 through multiple connecting devices.

[0084] Specifically, the skateboard chassis and body connection structure can achieve one-click separation and one-click connection between the skateboard chassis 8 and the body 9 through the connection device, which has higher flexibility compared with the traditional welding or riveting connection structure.

[0085] Optionally, the skateboard chassis 8 includes: a front crossbeam 81, a middle crossbeam 82, a rear crossbeam 83, a left front longitudinal beam 84, a right front longitudinal beam 85, a left rear longitudinal beam 86, and a right rear longitudinal beam 87.

[0086] The body 9 includes: front crossbeam 91, middle crossbeam 92, rear crossbeam 93, left front longitudinal beam 94, right front longitudinal beam 95, left rear longitudinal beam 96, and right rear longitudinal beam 97.

[0087] There are seven connecting devices in total. The front crossbeam 81 of the chassis is connected to the front crossbeam 91 of the vehicle body through the first connecting device. The middle crossbeam 82 of the chassis is connected to the middle crossbeam 92 of the vehicle body through the second connecting device. The rear crossbeam 83 of the chassis is connected to the rear crossbeam 93 of the vehicle body through the third connecting device. The left front longitudinal beam 84 of the chassis is connected to the left front longitudinal beam 94 of the vehicle body through the fourth connecting device. The right front longitudinal beam 85 of the chassis is connected to the right front longitudinal beam 95 of the vehicle body through the fifth connecting device. The left rear longitudinal beam 86 of the chassis is connected to the left rear longitudinal beam 96 of the vehicle body through the sixth connecting device. The right rear longitudinal beam 87 of the chassis is connected to the right rear longitudinal beam 97 of the vehicle body through the seventh connecting device.

[0088] Specifically, by setting multiple connecting devices at different parts of the skateboard chassis 8 and the body 9, multi-point connection is achieved. The reasonable arrangement takes into account the front, rear, left, right and middle areas, which can effectively distribute the load, avoid connection failure caused by local stress concentration, and ensure the firmness of the connection and the stability after separation.

[0089] Optionally, the lead screw 6, nut 2 and drive component 1 located on the skateboard chassis 8 are all lower than the highest point of the skateboard chassis 8;

[0090] The lead screw 6, nut 2, and drive component 1, which are located on the body 9, are all higher than the lowest point of the skateboard chassis 8.

[0091] Specifically, the height settings of the lead screw 6, nut 2, and drive component 1 help to ensure the flatness of the lower surface of the vehicle body 9 and the flatness of the upper surface of the skateboard chassis 8, reduce the possibility of collision between the connecting device and other components, and facilitate the storage of the vehicle body 9 and skateboard chassis 8 in other locations.

[0092] In this embodiment, both the skateboard chassis 8 and the body 9 are square tube structures 10;

[0093] The heights of the chassis crossbeam 82, chassis left front longitudinal beam 84, chassis right front longitudinal beam 85, chassis left rear longitudinal beam 86 and chassis right rear longitudinal beam 87 are the same and lower than the chassis front crossbeam 81 and chassis rear crossbeam 83.

[0094] The heights of the vehicle body crossbeam 92, the left front longitudinal beam 94, the right front longitudinal beam 95, the left rear longitudinal beam 96, and the right rear longitudinal beam 97 are the same and lower than the front crossbeam 91 and the rear crossbeam 93.

[0095] Multiple nuts 2 of the first connecting device are disposed inside the front crossbeam 81 of the chassis. The top and bottom walls of the front crossbeam 81 of the chassis are provided with multiple first through holes corresponding to the nuts 2. The first through holes are used to accommodate the screw 6. The body of the drive component 1 of the first connecting device is disposed below the front crossbeam 81 of the chassis. The bottom wall of the front crossbeam 81 of the chassis is provided with at least one second through hole corresponding to the drive component 1. The output end of the drive component 1 of the first connecting device passes through the second through hole of the front crossbeam 81 of the chassis and is connected to the nuts 2 of the first connecting device. The front crossbeam 91 of the vehicle body is provided with multiple third through holes corresponding to the screw 6. The multiple screws 6 of the first connecting device are installed in the third through holes of the front crossbeam 91 of the vehicle body.

[0096] Multiple nuts 2 of the second connecting device are disposed inside the rear crossbeam 83 of the chassis. The top and bottom walls of the rear crossbeam 83 of the chassis are provided with multiple first through holes corresponding to the nuts 2. The body of the drive component 1 of the second connecting device is disposed below the rear crossbeam 83 of the chassis. The bottom wall of the rear crossbeam 83 of the chassis is provided with at least one second through hole corresponding to the drive component 1. The output end of the drive component 1 of the second connecting device passes through the second through hole of the rear crossbeam 83 of the chassis and is connected to the nuts 2 of the second connecting device in a transmission manner. The rear crossbeam 93 of the vehicle body is provided with multiple third through holes corresponding to the lead screws. Multiple lead screws 6 of the second connecting device are installed in the third through holes of the rear crossbeam 93 of the vehicle body.

[0097] Multiple nuts 2 of the third connecting device are disposed inside the crossbeam 92 of the vehicle body. The top and bottom walls of the crossbeam 92 of the vehicle body are provided with multiple first through holes corresponding to the nuts 2. The body of the drive component 1 of the third connecting device is disposed above the crossbeam 92 of the vehicle body. The top wall of the crossbeam 92 of the vehicle body is provided with at least one second through hole corresponding to the drive component 1. The output end of the drive component 1 of the third connecting device passes through the second through hole of the crossbeam 92 of the vehicle body and is connected to the nuts 2 in a transmission manner. The crossbeam 82 of the chassis is provided with multiple third through holes corresponding to the lead screws 6. The multiple lead screws 6 of the third connecting device are installed in the third through holes of the crossbeam 82 of the chassis.

[0098] The fourth connecting device has multiple nuts 2 inside the left front longitudinal beam 94 of the vehicle body. The top and bottom walls of the left front longitudinal beam 94 of the vehicle body have multiple first through holes corresponding to the nuts 2. The body of the driving component 1 of the fourth connecting device is located above the left front longitudinal beam 94 of the vehicle body. The top wall of the left front longitudinal beam 94 of the vehicle body has at least one second through hole corresponding to the driving component 1. The output end of the driving component 1 of the fourth connecting device passes through the second through hole of the left front longitudinal beam 94 of the vehicle body and is connected to the nuts 2 of the fourth connecting device. The chassis left front longitudinal beam 84 has multiple third through holes corresponding to the lead screw 6. The multiple lead screws 6 of the fourth connecting device are installed in the third through holes of the chassis left front longitudinal beam 84.

[0099] The fifth connecting device has multiple nuts 2 inside the right front longitudinal beam 95 of the vehicle body. The top and bottom walls of the right front longitudinal beam 95 of the vehicle body have multiple first through holes corresponding to the nuts 2. The body of the driving component 1 of the fifth connecting device is located above the right front longitudinal beam 95 of the vehicle body. The top wall of the right front longitudinal beam 95 of the vehicle body has at least one second through hole corresponding to the driving component 1. The output end of the driving component 1 of the fifth connecting device passes through the second through hole and is connected to the nuts 2 of the fifth connecting device. The right front longitudinal beam 85 of the chassis has multiple third through holes. The multiple lead screws 6 of the fifth connecting device are installed in the third through holes of the right front longitudinal beam 85 of the chassis.

[0100] The sixth connecting device has multiple nuts 2 inside the left rear longitudinal beam 96 of the vehicle body. The top and bottom walls of the left rear longitudinal beam 96 of the vehicle body have multiple first through holes corresponding to the nuts 2. The body of the driving component 1 of the sixth connecting device is located above the left rear longitudinal beam 96 of the vehicle body. The top wall of the left rear longitudinal beam 96 of the vehicle body has at least one second through hole corresponding to the driving component 1. The output end of the driving component 1 of the sixth connecting device passes through the second through hole of the left rear longitudinal beam 96 of the vehicle body and is connected to the nuts 2 for transmission. The left rear longitudinal beam 86 of the chassis has multiple third through holes corresponding to the lead screws. The multiple lead screws 6 of the sixth connecting device are installed in the third through holes of the left rear longitudinal beam 86 of the chassis.

[0101] The seventh connecting device has multiple nuts 2 located inside the right rear longitudinal beam 97 of the vehicle body. The top and bottom walls of the right rear longitudinal beam 97 of the vehicle body have multiple first through holes corresponding to the nuts 2. The body of the drive component 1 of the seventh connecting device is located above the right rear longitudinal beam 97 of the vehicle body. The top wall of the right rear longitudinal beam 97 of the vehicle body has at least one second through hole corresponding to the drive component 1. The output end of the drive component 1 of the seventh connecting device passes through the second through hole of the right rear longitudinal beam 97 of the vehicle body and is connected to the nuts 2 for transmission. The right rear longitudinal beam 87 of the chassis has multiple third through holes corresponding to the lead screws 6. The multiple lead screws 6 of the seventh connecting device are installed in the third through holes of the right rear longitudinal beam 87 of the chassis.

[0102] This embodiment also provides a car, including:

[0103] The connection structure in this embodiment.

[0104] Specifically, the vehicle can achieve one-click separation and one-click connection between the skateboard chassis 8 and the body 9 through a connecting device, which is more flexible than traditional welding or riveting methods.

[0105] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A connection device between a skateboard chassis and a vehicle body, characterized in that, include: At least one drive component (1); Multiple nuts (2), each nut (2) having an internal thread, the nuts (2) being connected to the drive component (1) in a transmission manner, the nuts (2) being used to rotatably connect with the skateboard chassis (8) or the body (9); Multiple lead screws (6) are provided in pairs with the nuts (2). The lead screws (6) are provided with external threads that mate with the internal threads. The lead screws (6) are used to be fixedly connected to the skateboard chassis (8) or the vehicle body (9).

2. The skateboard chassis and vehicle body connection device according to claim 1, characterized in that, The connecting device is used for the skateboard chassis (8) with a square tube (10) structure and the body (9) with a square tube structure; The nut (2) has an upper extension (21) extending radially on the outer periphery of its upper part. The upper surface of the upper extension (21) has a first lower raceway. An upper pressure ring (3) is provided above the upper extension (21). The lower surface of the inner ring of the upper pressure ring (3) has a first upper raceway. A plurality of rolling elements (5) are provided between the first lower raceway and the first upper raceway. The outer ring of the upper pressure ring (3) is used to fix it to the top wall of the square tube (10). The lower outer periphery of the nut (2) is provided with a radially extending lower extension (22). The lower surface of the lower extension (22) is provided with a second upper raceway. A lower pressure ring (4) is provided below the lower extension (22). The upper surface of the inner ring of the lower pressure ring (4) is provided with a second lower raceway. A plurality of rolling elements (5) are provided between the second upper raceway and the second upper raceway. The outer ring of the lower pressure ring (4) is used to fix it to the bottom wall of the square tube (10).

3. The skateboard chassis and vehicle body connection device according to claim 2, characterized in that, The lead screw (6) includes: Threaded section (61), the external thread is provided on the outer periphery of the threaded section (61), the threaded section (61) is used to be provided on the outside of the square tube (10) to cooperate with the nut (2); A connecting section (62) is fixedly connected to the threaded section (61), and the connecting section (62) is used to be fixedly installed inside the square tube (10).

4. The skateboard chassis and vehicle body connection device according to claim 2, characterized in that, The outer periphery of the nut (2) is provided with a first gear (23) and a second gear (24), and multiple nuts (2) are sequentially connected by the first gear (23), the second gear (24) and multiple chains (7); The output end of the drive component (1) passes through the outer wall of the square tube (10), and the output end of the drive component (1) is provided with a third gear (11). At least one of the third gears (11) of the drive component (1) meshes with the first gear (23) of the nut (2).

5. The skateboard chassis and vehicle body connection device according to claim 4, characterized in that, The outer diameter of the first gear (23) is larger than the outer diameter of the third gear (11).

6. The skateboard chassis and vehicle body connection device according to claim 4, characterized in that, Multiple nuts (2) are arranged in a straight line, and two drive components (1) are provided, with each nut (2) at both ends connected to one drive component (1).

7. A connection structure between a skateboard chassis and a vehicle body, characterized in that, include: Skateboard chassis (8); Body (9); The connecting device according to any one of claims 1-6, wherein the skateboard chassis (8) and the vehicle body (9) are connected by the multiple connecting devices.

8. The skateboard chassis and vehicle body connection structure according to claim 7, characterized in that, The skateboard chassis (8) includes: a front crossbeam (81), a middle crossbeam (82), a rear crossbeam (83), a left front longitudinal beam (84), a right front longitudinal beam (85), a left rear longitudinal beam (86), and a right rear longitudinal beam (87). The vehicle body (9) includes: a front crossbeam (91), a middle crossbeam (92), a rear crossbeam (93), a left front longitudinal beam (94), a right front longitudinal beam (95), a left rear longitudinal beam (96), and a right rear longitudinal beam (97). The connecting devices are provided in total, with the front crossbeam of the chassis (81) and the front crossbeam of the vehicle body (91) connected by the first connecting device, the middle crossbeam of the chassis (82) and the middle crossbeam of the vehicle body (92) connected by the second connecting device, the rear crossbeam of the chassis (83) and the rear crossbeam of the vehicle body (93) connected by the third connecting device, the left front longitudinal beam of the chassis (84) and the left front longitudinal beam of the vehicle body (94) connected by the fourth connecting device, the right front longitudinal beam of the chassis (85) and the right front longitudinal beam of the vehicle body (95) connected by the fifth connecting device, the left rear longitudinal beam of the chassis (86) and the left rear longitudinal beam of the vehicle body (96) connected by the sixth connecting device, and the right rear longitudinal beam of the chassis (87) and the right rear longitudinal beam of the vehicle body (97) connected by the seventh connecting device.

9. The skateboard chassis and vehicle body connection structure according to claim 8, characterized in that, The lead screw (6), the nut (2) and the drive component (1) located on the skateboard chassis (8) are all below the highest point of the skateboard chassis (8); The lead screw (6), the nut (2) and the drive component (1) located on the vehicle body (9) are all higher than the lowest point of the skateboard chassis (8).

10. A car, characterized in that, include: The connection structure according to any one of claims 7-9.

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