Connecting structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a connecting structure and a vehicle. The connecting structure comprises a first clamping piece, a connecting assembly and a second clamping piece, and an avoiding hole is formed in the first clamping piece. The connecting assembly is provided with a connecting part, and the connecting part is used for being connected with an input shaft of the gearbox through the receding hole. The second clamping piece is arranged on the side, away from the first clamping piece, of the connecting assembly, and the second clamping piece is connected with the first clamping piece so as to clamp the connecting assembly together with the first clamping piece; the second clamping piece is used for being connected with a motor shaft of the motor so that the torque of the motor shaft can be transmitted to the input shaft through friction force via the connecting assembly. According to the connecting structure and the vehicle provided by the invention, the interference of road excitation on the rotating speed and torque of the motor is reduced.

Description

Technical Field

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

[0002] A central drive commercial vehicle is a commercial vehicle that uses an electric motor instead of a traditional internal combustion engine. Central drive commercial vehicles are equipped with a gearbox that can adjust the output speed and torque of the electric motor to adapt to different driving conditions.

[0003] In the prior art, the motor shaft of the electric motor is connected to the input shaft of the gearbox via a spline. The motor shaft of the electric motor can transmit power to the input shaft of the gearbox, thereby driving the vehicle to move.

[0004] However, during vehicle operation, the vehicle is subjected to excitations from the road surface (such as vertical impacts and vibrations). The vehicle can transfer all the loads generated by the road surface excitations to the electric motor through the transmission, thereby interfering with the speed and torque of the electric motor. Utility Model Content

[0005] This application provides a connection structure and vehicle that reduces the interference of road surface excitation on the speed and torque of the electric motor.

[0006] In a first aspect, the connection structure provided in this application includes: a first clamping member, a connecting assembly, and a second clamping member, wherein the first clamping member is provided with a clearance hole.

[0007] A connecting assembly having a connecting part for connecting to the input shaft of the gearbox via a clearance hole.

[0008] The second clamping member is disposed on the side of the connecting assembly opposite to the first clamping member. The second clamping member is connected to the first clamping member so as to clamp the connecting assembly together with the first clamping member. The second clamping member is used to connect to the motor shaft of the electric motor so as to transmit the torque of the motor shaft to the input shaft through the connecting assembly via friction.

[0009] In one possible implementation, the connection structure provided in this application includes a first connector and a second connector connected to the periphery of the first connector.

[0010] The connecting part is disposed on the first connecting member, and the first clamping member and the second clamping member together clamp the second connecting member.

[0011] In one possible implementation, the connection structure provided in this application further includes a plurality of wear-resistant components, which are disposed on the surface of the second connector, and the second connector contacts the first clamping component and / or the second clamping component through the wear-resistant components.

[0012] In one possible implementation, the connection structure provided in this application further includes at least one elastic element that connects the first connector and the second connector.

[0013] In one possible implementation, the connection structure provided in this application has an edge of the first connector having a receiving groove for accommodating a portion of the second connector.

[0014] The first connector is provided with at least one first limiting groove, and the second connector is provided with at least one second limiting groove. The receiving groove is connected to the first limiting groove and the second limiting groove. The elastic element is engaged in the first limiting groove and the second limiting groove to connect the first connector and the second connector.

[0015] In one possible implementation, the connection structure provided in this application has a first groove on the first clamping member and a second groove on the second clamping member. The first groove and the second groove are arranged opposite to each other to form a receiving cavity for accommodating the connection component, and the clearance hole is connected to the receiving cavity.

[0016] In one possible implementation, the connection structure provided in this application further includes multiple fasteners, with the first clamping member and the second clamping member connected by the fasteners.

[0017] Secondly, this application provides a vehicle, including a vehicle body and a connection structure provided in the first aspect disposed on the vehicle body.

[0018] In one possible implementation, the vehicle provided in this application includes a vehicle body comprising a gearbox and an electric motor, wherein the connecting portion of the connecting assembly of the connecting structure is connected to the input shaft of the gearbox via a spline.

[0019] The second clamping component of the connecting structure is bolted to the motor shaft of the electric motor.

[0020] In one possible implementation, the vehicle provided in this application further includes a bearing member disposed on a second clamping member, with the end of the input shaft inserted into the bearing member.

[0021] The connection structure and vehicle provided in this application include a first clamping member, a connecting assembly, and a second clamping member. The first clamping member has a clearance hole. The connecting assembly has a connecting portion for connecting to the input shaft of the gearbox via the clearance hole. The second clamping member is located on the side of the connecting assembly opposite to the first clamping member, and together with the first clamping member, clamps the connecting assembly, thereby subjecting the connecting assembly to compression by the first and second clamping members. The second clamping member is connected to the motor shaft of the electric motor. When the motor shaft drives the second clamping member to rotate, the second clamping member can drive the connecting assembly to rotate through friction. The connecting assembly then transmits torque to the input shaft of the gearbox, allowing the gearbox to adjust the torque and speed output by the electric motor.

[0022] During vehicle operation, the vehicle is subjected to excitation from the road surface. The vehicle transmits the load generated by the road surface excitation to the connecting assembly through the input shaft of the transmission. When the load exceeds the static friction between the connecting assembly and the second clamping member, the connecting assembly can slide relative to the second clamping member. This reduces the load transmitted from the connecting assembly to the motor through the second clamping member, thereby reducing the interference of the road surface excitation on the motor's speed and torque. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the connection structure provided in the embodiments of this application;

[0025] Figure 2 for Figure 1 An explosion diagram;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of the connecting component;

[0027] Figure 4 for Figure 3 A sectional view of section AA in the middle;

[0028] Figure 5 for Figure 4 Enlarged structural diagram of section B;

[0029] Figure 6 for Figure 2 A schematic diagram of the structure of the first clamping component;

[0030] Figure 7 for Figure 6 A structural diagram from another angle;

[0031] Figure 8 for Figure 2 Schematic diagram of the structure of the second clamping component;

[0032] Figure 9 for Figure 8 A structural diagram from another angle;

[0033] Figure 10 A diagram showing the usage state of the connection structure provided in the embodiments of this application;

[0034] Figure 11 for Figure 10 An explosion diagram;

[0035] Figure 12 for Figure 11 A schematic diagram of the structure of the electric motor;

[0036] Figure 13 for Figure 11 A schematic diagram of the gearbox structure.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100 - First clamping element; 110 - Clearance hole; 120 - First groove;

[0039] 200 - Connection Components;

[0040] 210 - First connector; 211 - Connecting part; 212 - Receiving groove; 213 - First limiting groove;

[0041] 220 - Second connector; 221 - Second limiting groove;

[0042] 230 - Wear-resistant parts;

[0043] 240 - Elastic element;

[0044] 300 - Second clamping element; 310 - Second groove;

[0045] 400 - Fasteners;

[0046] 500 - Gearbox; 510 - Input shaft;

[0047] 600 - Electric motor; 610 - Motor shaft;

[0048] 700 - Bearing components.

[0049] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0050] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0051] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0054] As shown in the background section, in the prior art, the motor shaft of the electric motor is connected to the input shaft of the gearbox via a spline, and the motor shaft of the electric motor transmits power to the input shaft of the gearbox via the spline, thereby driving the vehicle to move.

[0055] However, during vehicle operation, the vehicle is subjected to excitations from the road surface (such as vertical impacts and vibrations). Since the motor shaft of the electric motor is rigidly connected to the input shaft of the gearbox, the vehicle can transfer all the loads generated by the road surface excitations to the electric motor through the gearbox, thereby interfering with the speed and torque of the electric motor.

[0056] Based on this, the connection structure and vehicle provided in this application include a first clamping member, a connecting assembly, and a second clamping member. The first clamping member has a clearance hole. The connecting assembly has a connecting portion for connecting to the input shaft of the gearbox via the clearance hole. The second clamping member is located on the side of the connecting assembly opposite to the first clamping member, and together with the first clamping member, clamps the connecting assembly, thereby subjecting the connecting assembly to compression by the first and second clamping members. The second clamping member is connected to the motor shaft of the electric motor. When the motor shaft drives the second clamping member to rotate, the second clamping member can drive the connecting assembly to rotate through friction. The connecting assembly then transmits torque to the input shaft of the gearbox, allowing the gearbox to adjust the torque and speed output by the electric motor.

[0057] During vehicle operation, the vehicle is subjected to excitation from the road surface. The vehicle transmits the load generated by the road surface excitation to the connecting assembly through the input shaft of the transmission. When the load exceeds the static friction between the connecting assembly and the second clamping member, the connecting assembly can slide relative to the second clamping member. This reduces the load transmitted from the connecting assembly to the motor through the second clamping member, thereby reducing the interference of the road surface excitation on the motor's speed and torque.

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0059] Reference Figure 1 and Figure 2 As shown, the connection structure provided in this application includes: a first clamping member 100, a connecting assembly 200, and a second clamping member 300. The first clamping member 100 is provided with a clearance hole 110.

[0060] The connecting assembly 200 has a connecting part 211 for connecting to the input shaft 510 of the gearbox 500 via the clearance hole 110.

[0061] The second clamping member 300 is disposed on the side of the connecting assembly 200 opposite to the first clamping member 100. The second clamping member 300 is connected to the first clamping member 100 to clamp the connecting assembly 200 together with the first clamping member 100. The second clamping member 300 is used to connect to the motor shaft 610 of the motor 600 to transmit the torque of the motor shaft 610 to the input shaft 510 through friction via the connecting assembly 200.

[0062] It should be noted that the connection structure provided in this application embodiment can be used to connect the electric motor 600 and the gearbox 500 of a centrally driven commercial vehicle, and can also be used in other vehicles equipped with the electric motor 600 and the gearbox 500. This application embodiment does not impose too many restrictions on this.

[0063] Specifically, the second clamping member 300 is disposed on the side of the connecting assembly 200 away from the first clamping member 100, that is, the connecting assembly 200 is located between the first clamping member 100 and the second clamping member 300. The first clamping member 100 and the second clamping member 300 can jointly clamp the connecting assembly 200, so that the opposite sides of the connecting assembly 200 are squeezed by the first clamping member 100 and the second clamping member 300 respectively.

[0064] Since the rotational torque generated inside the motor 600 can be output through the motor shaft 610, and the second clamping member 300 is used to connect with the motor shaft 610 of the motor 600, the motor 600 can transmit torque to the second clamping member 300 through the motor shaft 610, thereby driving the second clamping member 300 to rotate.

[0065] For example, the second clamping member 300 can be connected to the motor shaft 610 by bolts or flanges, or by other means. This application embodiment does not impose too many restrictions on this.

[0066] When the motor shaft 610 of the motor 600 transmits torque to the second clamping member 300 so that the second clamping member 300 rotates or has a tendency to rotate relative to the connecting assembly 200, the friction between the second clamping member 300 and the connecting assembly 200 can drive the connecting assembly 200 to rotate synchronously with the second clamping member 300 due to the compression of the connecting assembly 200 by the second clamping member 300.

[0067] Furthermore, since the first clamping member 100 is provided with a clearance hole 110, the connecting part 211 on the connecting assembly 200 can be connected to the input shaft 510 of the gearbox 500 through the clearance hole 110. Thus, when the connecting assembly 200 rotates synchronously with the second clamping member 300, the connecting assembly 200 can drive the input shaft 510 of the gearbox 500 to rotate synchronously through the connecting part 211, thereby allowing the gearbox 500 to adjust the torque and speed output by the motor 600.

[0068] For example, the shape of the clearance hole 110 can be circular, rectangular or trapezoidal, or other shapes. This application embodiment does not impose too many restrictions on this.

[0069] During vehicle operation, the vehicle is subjected to excitation from the road surface. The vehicle transmits the load generated by the road surface excitation to the connecting assembly 200 through the input shaft 510 of the transmission 500. When the load exceeds the static friction between the connecting assembly 200 and the second clamping member 300, the static friction fails, and the connecting assembly 200 can slide relative to the second clamping member 300. This reduces the load transmitted from the connecting assembly 200 to the motor 600 through the second clamping member 300, thereby reducing the interference of the road surface excitation on the speed and torque of the motor 600.

[0070] In some embodiments, refer to Figure 3 and Figure 4 As shown, the connection assembly 200 includes a first connector 210 and a second connector 220 connected to the periphery of the first connector 210.

[0071] The connecting part 211 is disposed on the first connecting member 210, and the first clamping member 100 and the second clamping member 300 jointly clamp the second connecting member 220.

[0072] Specifically, the first clamping member 100 and the second clamping member 300 jointly clamp the second connecting member 220, thereby the second connecting member 220 is squeezed by the first clamping member 100 and the second clamping member 300. When the motor shaft 610 of the motor 600 transmits torque to the second clamping member 300 to make the second clamping member 300 rotate or have a tendency to rotate relative to the second connecting member 220, the friction between the second connecting member 220 and the second clamping member 300 due to the squeezing of the second clamping member 300 can drive the second connecting member 220 to rotate synchronously with the second clamping member 300.

[0073] Since the second connecting member 220 is connected to the first connecting member 210, the second connecting member 220 can drive the first connecting member 210 to rotate synchronously. A connecting part 211 is provided on the first connecting member 210, and the first connecting member 210 is connected to the input shaft 510 of the gearbox 500 via the connecting part 211 and the clearance hole 110 of the first clamping member 100. Therefore, the first connecting member 210 can drive the input shaft 510 of the gearbox 500 to rotate synchronously via the connecting part 211, allowing the gearbox 500 to adjust the torque and speed output by the electric motor 600.

[0074] During vehicle operation, the vehicle is subjected to excitation from the road surface. The vehicle transmits the load generated by the road surface excitation to the second connector 220 via the input shaft 510 of the transmission 500 through the first connector 210. When the load exceeds the static friction between the second connector 220 and the second clamping member 300, the second connector 220 can slide relative to the second clamping member 300, thereby reducing the load transmitted from the second connector 220 to the motor 600 through the second clamping member 300, thus reducing the interference of the road surface excitation on the speed and torque of the motor 600.

[0075] For example, both the first connector 210 and the second connector 220 can be annular, and the first connector 210 and the second connector 220 are concentrically arranged. The connecting portion 211 can be disposed in the central hole of the first connector 210, the clearance hole 110 can be disposed in the center of the second clamping member 300, and the motor shaft 610 of the motor 600 can be connected to the center of the second clamping member 300. Thus, the motor shaft 610 is coaxially arranged with the second clamping member 300, the second connector 220, the first connector 210, and the first clamping member 100. In this way, the centrifugal force generated during rotation is more uniform, which helps to improve the stability of the connecting assembly 200.

[0076] In some embodiments, refer to Figure 3 and Figure 4 As shown, the connecting assembly 200 also includes a plurality of wear-resistant parts 230, which are disposed on the surface of the second connector 220. The second connector 220 contacts the first clamping member 100 and / or the second clamping member 300 through the wear-resistant parts 230.

[0077] It should be noted that since the first clamping member 100 is connected to the second clamping member 300, when the motor shaft 610 of the motor 600 drives the second clamping member 300 to rotate, the first clamping member 100 rotates synchronously with the second clamping member 300.

[0078] Furthermore, since the two opposite sides of the second connector 220 are squeezed by the first clamping member 100 and the second clamping member 300 respectively, when the first clamping member 100 and the second clamping member 300 rotate relative to the connecting assembly 200 or have a tendency to rotate, both the first clamping member 100 and the second clamping member 300 have frictional force with the second connector 220, and both the first clamping member 100 and the second clamping member 300 can drive the second connector 220 to rotate synchronously.

[0079] Understandably, by providing a wear-resistant part 230 on the side of the second connector 220 facing the second clamping member 300, the friction between the second connector 220 and the second clamping member 300 can be increased; by providing a wear-resistant part 230 on the side of the second connector 220 facing the first clamping member 100, the friction between the second connector 220 and the first clamping member 100 can be increased.

[0080] In specific implementation, the material of the second connector 220 can be steel, and the material of the wear-resistant part 230 can be organic friction material or ceramic friction material, or other materials can be used. This application embodiment does not impose too many restrictions on this.

[0081] For example, the wear-resistant part 230 and the second connecting part 220 can be connected by riveting, bolting or welding, or other methods. This application embodiment does not impose too many restrictions on this.

[0082] In some embodiments, refer to Figure 3 and Figure 4 As shown, the connecting assembly 200 also includes at least one elastic element 240, which connects the first connecting element 210 and the second connecting element 220.

[0083] During vehicle operation, the vehicle transmits the load generated by road surface excitation to the first connector 210 through the input shaft 510 of the transmission 500.

[0084] By providing an elastic element 240 between the first connector 210 and the second connector 220, the elastic element 240 flexibly connects the first connector 210 and the second connector 220, effectively absorbing the load transmitted by the first connector 210, thereby reducing the load transmitted to the second connector 220, and further reducing the interference of road excitation on the speed and torque of the motor 600.

[0085] For example, the elastic element 240 can be a spring or other elastic component, and the embodiments of this application do not impose too many restrictions on it.

[0086] In some embodiments, refer to Figures 3 to 5 As shown, the edge of the first connector 210 has a receiving groove 212, which is used to receive a portion of the second connector 220.

[0087] The first connector 210 is provided with at least one first limiting groove 213, and the second connector 220 is provided with at least one second limiting groove 221. The receiving groove 212 is connected to the first limiting groove 213 and the second limiting groove 221. The elastic member 240 is engaged in the first limiting groove 213 and the second limiting groove 221 to connect the first connector 210 and the second connector 220.

[0088] Specifically, a portion of the second connector 220 is placed within the receiving groove 212 on the edge of the first connector 210, meaning the edge of the first connector 210 overlaps with a portion of the second connector 220. The first limiting groove 213 on the first connector 210 and the second limiting groove 221 on the second connector 220 both communicate with the receiving groove 212. The elastic member 240 is engaged within the first limiting groove 213 and the second limiting groove 221, thereby connecting the first connector 210 and the second connector 220.

[0089] It should be noted that there can be multiple elastic elements 240, first limiting grooves 213 and second limiting grooves 221, and the number of elastic elements 240, first limiting grooves 213 and second limiting grooves 221 is the same. Each elastic element 240 is correspondingly engaged in the first limiting groove 213 and the second limiting groove 221. For example, each elastic element 240 can be evenly spaced.

[0090] In some embodiments, refer to Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the first clamping member 100 is provided with a first groove 120, and the second clamping member 300 is provided with a second groove 310. The first groove 120 and the second groove 310 are arranged opposite to each other to form a receiving cavity for accommodating the connecting assembly 200. The clearance hole 110 is connected to the receiving cavity.

[0091] Understandably, by providing a first groove 120 and a second groove 310 on the first clamping member 100 and the second clamping member 300 respectively to form a receiving cavity, the first clamping member 100 and the second clamping member 300 provide receiving space for the connecting assembly 200. The connecting assembly 200 can be completely placed in the receiving cavity, so that the edge of the first clamping member 100 contacts the edge of the second clamping member 300, thereby facilitating the connection of the first clamping member 100 and the second clamping member 300.

[0092] In some embodiments, refer to Figure 1 and Figure 2 As shown, it also includes multiple fasteners 400, and the first clamping member 100 and the second clamping member 300 are connected by the fasteners 400.

[0093] Specifically, multiple through holes can be provided on the edge of the first clamping member 100, and multiple threaded holes can be provided on the edge of the second clamping member 300. The fastener 400 is inserted into the first clamping member 100 through the through holes and connected to the threaded holes of the second clamping member 300, thereby connecting the first clamping member 100 and the second clamping member 300. For example, the fastener 400 can be a bolt.

[0094] This application also provides a vehicle, including a vehicle body and a connection structure disposed on the vehicle body.

[0095] The specific structure and working method of the connection structure have been described in detail in the above embodiments, and will not be repeated here.

[0096] In some embodiments, refer to Figures 10 to 13 As shown, the vehicle body includes a gearbox 500 and an electric motor 600, and the connecting part 211 of the connecting assembly 200 of the connecting structure is connected to the input shaft 510 of the gearbox 500 via a spline.

[0097] The second clamping member 300 of the connecting structure is connected to the motor shaft 610 of the motor 600 by bolts.

[0098] For example, a toothed joint can be provided in the connecting portion 211 of the connecting assembly 200, and the input shaft 510 of the gearbox 500 is inserted into the connecting portion 211 and meshes with the toothed joint.

[0099] For example, a through hole can be provided on the second clamping member 300 and a threaded hole can be provided on the motor shaft 610. The bolt is inserted into the second clamping member 300 through the through hole and connected to the threaded hole on the motor shaft 610.

[0100] In some embodiments, refer to Figure 8 and Figure 13 As shown, the vehicle also includes a bearing 700, which is disposed on the second clamping member 300, and the end of the input shaft 510 is inserted into the bearing 700.

[0101] Specifically, by providing a bearing 700 on the second clamping member 300, the end of the input shaft 510 of the gearbox 500 is inserted into the bearing 700, and the second clamping member 300 can provide support for the input shaft 510 through the bearing 700.

[0102] It should be noted that, due to the function of the bearing component 700, the rotation of the second clamping component 300 or the input shaft 510 will not cause the other to rotate. Exemplarily, the bearing component 700 can be a deep groove ball bearing or a thrust ball bearing, or other types of bearings; this embodiment does not impose excessive limitations on this.

[0103] Those skilled in the art will understand that the connection structure and vehicle provided in this application include a first clamping member 100, a connecting assembly 200, and a second clamping member 300. The first clamping member 100 has a clearance hole 110. The connecting assembly 200 has a connecting portion 211 for connecting to the input shaft 510 of the gearbox 500 via the clearance hole 110. The second clamping member 300 is located on the side of the connecting assembly 200 opposite to the first clamping member 100, and together with the first clamping member 100, clamps the connecting assembly 200, thereby subjecting the connecting assembly 200 to compression by the first clamping member 100 and the second clamping member 300. The second clamping member 300 is used to connect to the motor shaft 610 of the motor 600. When the motor shaft 610 drives the second clamping member 300 to rotate, the second clamping member 300 can drive the connecting assembly 200 to rotate through friction. The connecting assembly 200 then transmits the torque to the input shaft 510 of the gearbox 500, so that the gearbox 500 can adjust the torque and speed output by the motor 600.

[0104] During vehicle operation, the vehicle is subjected to excitation from the road surface. The vehicle transmits the load generated by the road surface excitation to the connecting assembly 200 through the input shaft 510 of the transmission 500. When the load exceeds the static friction between the connecting assembly 200 and the second clamping member 300, the connecting assembly 200 can slide relative to the second clamping member 300, thereby reducing the load transmitted from the connecting assembly 200 to the motor 600 through the second clamping member 300, and thus reducing the interference of the road surface excitation on the speed and torque of the motor 600.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0106] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0107] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A connection structure characterized by comprising: include: A first clamping member, wherein the first clamping member is provided with a clearance hole; A connecting assembly having a connecting portion for connecting to the input shaft of a gearbox via the clearance hole; The second clamping member is disposed on the side of the connecting assembly opposite to the first clamping member. The second clamping member is connected to the first clamping member to clamp the connecting assembly together with the first clamping member. The second clamping member is used to connect to the motor shaft of the electric motor to transmit the torque of the motor shaft to the input shaft through the connecting assembly via friction.

2. The connection structure according to claim 1, characterized in that The connecting component includes a first connector and a second connector connected to the periphery of the first connector; The connecting part is disposed on the first connecting member, and the first clamping member and the second clamping member together clamp the second connecting member.

3. The connection structure according to claim 2, characterized in that, The connecting assembly further includes a plurality of wear-resistant components disposed on the surface of the second connecting member, and the second connecting member contacts the first clamping member and / or the second clamping member through the wear-resistant components.

4. The connection structure according to claim 2, characterized by The connecting component further includes at least one elastic element that connects the first connecting element and the second connecting element.

5. The connection structure according to claim 4, characterized in that The edge of the first connector has a receiving groove for receiving a portion of the second connector; The first connector is provided with at least one first limiting groove, and the second connector is provided with at least one second limiting groove. The receiving groove is connected to the first limiting groove and the second limiting groove. The elastic element is engaged in the first limiting groove and the second limiting groove to connect the first connector and the second connector.

6. The connection structure according to any one of claims 1 to 5, characterized in that The first clamping member has a first groove, and the second clamping member has a second groove. The first groove and the second groove are arranged opposite to each other to form a receiving cavity for accommodating the connecting component. The clearance hole is connected to the receiving cavity.

7. The connection structure according to claim 6, characterized in that It also includes multiple fasteners, through which the first clamping member and the second clamping member are connected.

8. A vehicle characterized by comprising: It includes a vehicle body and a connection structure as described in any one of claims 1 to 7 disposed on the vehicle body.

9. The vehicle of claim 8, wherein, The vehicle body includes a gearbox and an electric motor, and the connecting part of the connecting component of the connecting structure is connected to the input shaft of the gearbox via a spline. The second clamping member of the connecting structure is bolted to the motor shaft of the electric motor.

10. The vehicle of claim 9, wherein, It also includes a bearing component, which is disposed on the second clamping component, and the end of the input shaft is inserted into the bearing component.

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