Transmission shaft assembly and vehicle

Abstract

The transmission shaft assembly comprises a shaft body, a universal joint and a connecting pipe body, the connecting pipe body and the shaft body are connected in a winding and curing mode, and protruding reinforcing ribs are arranged on the surface of the side, facing the shaft body, of the connecting part of the connecting pipe body and the shaft body in the radial direction; the reinforcing rib comprises a first reinforcing part and a second reinforcing part, and an included angle is formed between the second reinforcing part and the first reinforcing part. Therefore, through winding curing connection, mechanical connecting pieces such as rivets do not need to be used between the shaft body and the connecting pipe body, the connecting firmness and reliability between the shaft body and the connecting pipe body can be improved on the premise that the shaft body is not damaged, and therefore the working performance of the shaft body is optimized, and the service life of the shaft body is prolonged. Moreover, the reinforcing ribs are arranged on the connecting pipe body, so that the connecting area between the connecting pipe body and the shaft body is increased, the combinability between the connecting pipe body and the shaft body is further improved, the torque transmission capacity of the transmission shaft assembly can be effectively improved, and the service life of the transmission shaft assembly can be effectively prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of automobile transmission shaft assemblies, and in particular to a transmission shaft assembly and a vehicle. Background Art

[0002] The automotive driveshaft assembly, a key component between the transmission and drive axle, is responsible for transmitting torque, and its performance directly impacts the vehicle's handling and fuel economy. Carbon fiber composite shafts have been used to achieve lightweighting. However, traditional connection methods for these composite shafts can lead to assembly damage, low connection strength, and a shortened service life, failing to meet the performance and lifespan requirements of driveshafts in actual use. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a transmission shaft assembly, wherein the transmission shaft assembly, through winding and curing connection, does not require the use of mechanical connectors such as rivets between the shaft body and the connecting tube body. This can improve the firmness and reliability of the connection between the shaft body and the connecting tube body without damaging the shaft body, thereby optimizing the working performance and service life of the shaft body. In addition, reinforcing ribs are provided on the connecting tube body to increase the connection area between the connecting tube body and the shaft body, further improving the bonding between the connecting tube body and the shaft body, which can effectively improve the torque transmission capacity and service life of the transmission shaft assembly.

[0004] The present application also provides a vehicle having the above-mentioned transmission shaft assembly.

[0005] According to the transmission shaft assembly of the first aspect embodiment of the present application, the transmission shaft assembly includes: a shaft body, a universal joint and a connecting tube body, the universal joint is arranged at the axial ends of the shaft body; the connecting tube body is arranged between the shaft body and the universal joint, the connecting tube body is wound and solidified to the shaft body, and the connecting part of the connecting tube body and the shaft body has a protruding reinforcement rib on the side surface facing the shaft body in the radial direction; wherein the reinforcement rib includes a first reinforcement part and a second reinforcement part, the second reinforcement part is arranged on both sides of the width of the first reinforcement part, and the second reinforcement part has an angle with the first reinforcement part.

[0006] According to the drive shaft assembly of the present application, a winding and curing connection method can be used to eliminate the need for mechanical connectors such as rivets between the shaft body and the connecting tube. This can improve the firmness and reliability of the connection between the shaft body and the connecting tube without damaging the shaft body, thereby optimizing the working performance and service life of the shaft body. In addition, the connecting tube is provided with reinforcing ribs, which can increase the connection area between the connecting tube and the shaft body, further improving the bonding between the connecting tube and the shaft body, thereby effectively improving the torque transmission capacity and service life of the drive shaft assembly.

[0007] According to some embodiments of the present application, the shaft body is constructed as a tubular structure with a hollow interior, one end of the connecting tube body is disposed in the shaft body, and the other end is connected to the universal joint.

[0008] Furthermore, the connecting pipe body includes a first pipe segment and a second pipe segment connected in the axial direction, the first pipe segment is suitable for connecting to the shaft body, and the second pipe segment is suitable for connecting to the universal joint; wherein the reinforcing rib is arranged on the outer peripheral surface of the first pipe segment.

[0009] According to some embodiments of the present application, the reinforcing ribs are constructed in plurality and form a row in the circumferential direction of the connecting tube body; or the reinforcing ribs are constructed in plurality and are divided into a plurality of spaced rows along the axial direction of the connecting tube body, and the number of the reinforcing ribs in the plurality of rows is the same, or the number of the reinforcing ribs in at least one row is different from the number of the reinforcing ribs in other rows.

[0010] Furthermore, the plurality of reinforcing ribs are divided into a plurality of spaced rows along the axial direction of the connecting tube body, and projections of the reinforcing ribs in two adjacent rows along the axial direction of the connecting tube body overlap or intersect.

[0011] Furthermore, the first reinforcement portion includes two first sub-reinforcement portions that are opposite to and spaced apart from each other, and the second reinforcement portion includes two second sub-reinforcement portions that are opposite to and spaced apart from each other; wherein the midpoint position of the interval between the two first sub-reinforcement portions coincides with the midpoint position of the interval between the two second sub-reinforcement portions.

[0012] Furthermore, the first sub-reinforcement portion extends in the axial direction of the connecting pipe body, and the second sub-reinforcement portion extends in the circumferential direction of the connecting pipe body.

[0013] In some embodiments, the cross-sectional areas of the two first sub-reinforcements at one end close to each other gradually increase in the direction away from each other, and the cross-sectional areas of the two first sub-reinforcements at one end away from each other gradually decrease in the direction away from each other; the cross-sectional areas of the two second sub-reinforcements at one end close to each other gradually increase in the direction away from each other, and the cross-sectional areas of the two second sub-reinforcements at one end away from each other gradually decrease in the direction away from each other.

[0014] According to some embodiments of the present application, the transmission shaft assembly further includes: a spline connection, which is provided at one end of one of the two universal joints and is suitable for connection with the connecting pipe body.

[0015] According to the vehicle of the second embodiment of the present application, the vehicle includes: a drive shaft assembly according to any one of the above embodiments.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic structural diagram of a transmission shaft assembly according to an embodiment of the present application;

[0019] Figure 2 is an axonometric view of a connecting pipe body according to an embodiment of the present application;

[0020] Figure 3 is a front view of a connecting pipe body according to an embodiment of the present application;

[0021] Figure 4 This is a side view of the connecting pipe body according to an embodiment of the present application.

[0022] Reference numerals:

[0023] 1000. Drive shaft assembly;

[0024] 1. Shaft body;

[0025] 2. Universal joint;

[0026] 3. Connecting pipe body; 3a. First pipe section; 3b. Second pipe section;

[0027] 31. Reinforcement ribs;

[0028] 31a, first reinforcement portion; 311, first end portion; 312, second end portion;

[0029] 31b, second reinforcement portion; 313, third end portion; 314, fourth end portion;

[0030] 4. Spline connection; 41. Spline shaft; 42. Spline sleeve. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0033] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0035] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0036] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0039] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0040] The term "plurality" used in this application refers to two or more (including two).

[0041] Reference below Figure 1-Figure 4 A propeller shaft assembly 1000 and a vehicle according to an embodiment of the present application are described.

[0042] like Figure 1 As shown, according to the transmission shaft assembly 1000 of the embodiment of the first aspect of the present application, the transmission shaft assembly 1000 includes: a shaft body 1, a universal joint 2 and a connecting tube body 3.

[0043] Among them, the universal joint 2 is arranged at both axial ends of the shaft body 1; the connecting tube body 3 is arranged between the shaft body 1 and the universal joint 2, the connecting tube body 3 is wound and solidified with the shaft body 1, and the connecting part of the connecting tube body 3 and the shaft body 1 has a protruding reinforcement rib 31 on the side surface facing the shaft body 1 in the radial direction; the reinforcement rib 31 includes a first reinforcement part 31a and a second reinforcement part 31b, the second reinforcement part 31b is arranged on both sides of the width of the first reinforcement part 31a, and the second reinforcement part 31b has an angle with the first reinforcement part 31a.

[0044] Specifically, the shaft body 1 is the main part of the transmission, which undertakes the main task of torque transmission. The shaft body 1 can be constructed of carbon fiber material to meet the requirements of lightweight and high strength; the universal joint 2 can be constructed into two, and respectively arranged at the two ends of the shaft body 1 in the axial direction. The universal joint 2 can be used to connect other transmission components, such as the vehicle's gearbox and drive axle, to ensure that the torque can be transmitted smoothly and adapt to steering requirements in different directions; the connecting tube body 3 can be constructed as a metal part, and the number of connecting tube bodies 3 is constructed as two, and respectively arranged between the two axial ends of the shaft body 1 and the two universal joints 2 to achieve connection and transition between the shaft body 1 and the universal joint 2.

[0045] In the present application, the connection between the connecting tube 3 and the shaft body 1 is constructed as a winding and curing connection. The winding and curing connection here can be understood as using a winding molding process to wind the fiber material between the connecting tube 3 and the shaft body 1, and forming the connecting tube 3 and the shaft body 1 into an integrated structure through resin curing. In addition, the connection portion of the connecting tube 3 and the shaft body 1 has a protruding reinforcing rib 31 on the side surface facing the shaft body 1 in the radial direction. The reinforcing rib 31 can enhance the overall rigidity of the connecting tube 3 itself and enable the connecting tube 3 to more evenly disperse stress when subjected to force, thereby improving the durability of the connecting tube 3. The presence of the reinforcing rib 31 can also increase the connection area between the connecting tube 3 and the shaft body 1, enhance the connection strength, and at the same time, as a structural feature, transmit torque, thereby improving the bonding between the connecting tube 3 and the shaft body 1.

[0046] It should be pointed out that the above-mentioned reinforcing rib 31 includes a first reinforcing portion 31a and a second reinforcing portion 31b. The first reinforcing portion 31a and the second reinforcing portion 31b both have a certain width. The second reinforcing portion 31b is located on both sides of the width of the first reinforcing portion 31a, and the second reinforcing portion 31b and the first reinforcing portion 31a have an angle. It can be understood that the second reinforcing portion 31b and the first reinforcing portion 31a extend in different directions. This is conducive to increasing the surface area of each reinforcing rib 31 and further enhancing the connection strength and stability between the connecting tube body 3 and the shaft body 1.

[0047] According to the drive shaft assembly 1000 of the present application, a winding and curing connection method can be used to eliminate the need for mechanical connectors such as rivets between the shaft body 1 and the connecting tube 3. This can improve the connection firmness and reliability between the shaft body 1 and the connecting tube 3 without damaging the shaft body 1, thereby optimizing the operating performance and service life of the shaft body 1. In addition, the connecting tube 3 is provided with a reinforcing rib 31, which can increase the connection area between the connecting tube 3 and the shaft body 1, further improving the bonding between the connecting tube 3 and the shaft body 1, thereby effectively improving the torque transmission capacity and service life of the drive shaft assembly 1000.

[0048] In addition, in some specific embodiments of the present application, the surface of the connecting tube body 3 is subjected to a shot blasting process to increase the surface roughness of the connecting tube body 3 to further improve the bonding between the connecting tube body 3 and the shaft body 1 .

[0049] In some other specific embodiments of the present application, the angle between the second reinforcement portion 31b and the first reinforcement portion 31a is configured to be 90°. It can be understood that the first reinforcement portion 31a can extend in the first direction, and the second reinforcement portion 31b can extend in the second direction, so that the first direction is orthogonal to the second direction. By setting the angle between the second reinforcement portion 31b and the first reinforcement portion 31a to be 90°, on the one hand, the first reinforcement portion 31a and the first reinforcement portion 31a extend in two orthogonal directions respectively, which can effectively increase the surface area of each reinforcement rib 31 and enhance the connection strength and stability between the connecting tube body 3 and the shaft body 1; on the other hand, by setting the angle between the second reinforcement portion 31b and the first reinforcement portion 31a to be 90°, the second reinforcement portion 31b is arranged perpendicular to the first reinforcement portion 31a, which helps to disperse the stress that may be concentrated in a certain area to a wider area, effectively improving the stress dispersion ability, avoiding the risk of local stress damage, and improving the reliability of the overall structure. In addition, the second reinforcement portion 31b is arranged perpendicular to the first reinforcement portion 31a, which can also enhance the torsion and shear resistance, improve the overall structural durability of the connecting tube body 3 and the shaft body 1, and thereby improve the working performance and reliability of the drive shaft assembly 1000.

[0050] It should be pointed out that the above-mentioned first reinforcement portion 31a extends in the first direction, and the second reinforcement portion 31b extends in the second direction, wherein the first direction and the second direction can both be constructed as curved directions, which is equivalent to the first direction and the second direction being constructed as directions intersecting with the axial and circumferential directions of the connecting pipe body 3. This arrangement can better adapt to the force characteristics of the drive shaft assembly 1000 under complex working conditions, such as bearing unevenly distributed torque and bending moment. The curved first reinforcement portion 31a and the second reinforcement portion 31b can better disperse stress and reduce stress concentration, thereby improving the strength and durability of the overall structure; the first direction and the second direction can also be constructed as a curved direction, and the other as a straight direction. For example, one of the first direction and the second direction is constructed as the axial direction of the connecting pipe body 3, and the other is constructed as the circumferential direction of the connecting pipe body 3. The use of a reinforcement rib 31 combining curves and straight lines is beneficial to improving the simplicity of the structure and manufacturing efficiency while ensuring good stress dispersion performance.

[0051] like Figure 1 As shown, according to some embodiments of the present application, the shaft body 1 is constructed as a tubular structure with a hollow interior, one end of the connecting tube 3 is arranged in the shaft body 1, and the other end is connected to the universal joint 2.

[0052] Specifically, the shaft body 1 can be constructed as a hollow tubular structure, with the projected profile of the shaft body 1 in the axial direction being a circular ring. This helps to increase the lightweighting of the shaft body 1 and save material costs, while also meeting the strength and rigidity requirements of the drive shaft assembly 1000. The shaft body 1 is connected to connecting tubes 3 at both ends in the axial direction. The ends of the two connecting tubes 3 that are closest to each other are disposed within the shaft body 1 and connected to the shaft body 1 through winding and curing, thereby improving the strength and durability of the connection and enhancing the overall performance of the drive shaft assembly 1000. The ends of the two connecting tubes 3 that are away from each other are respectively connected to two universal joints 2 to ensure smooth torque transmission and guarantee the normal operation of the drive shaft assembly 1000.

[0053] like Figure 2 and Figure 3 As shown, according to some embodiments of the present application, the connecting pipe body 3 includes a first pipe segment 3a and a second pipe segment 3b connected in the axial direction.

[0054] The first pipe section 3a is suitable for being connected to the shaft body 1, and the second pipe section 3b is suitable for being connected to the universal joint 2; and the reinforcing rib 31 is provided on the outer peripheral surface of the first pipe section 3a.

[0055] Specifically, the connecting tube body 3 can be divided axially into a first tube segment 3a and a second tube segment 3b. At least a portion of the first tube segment 3a is radially opposite the end of the shaft body 1 and is disposed within the shaft body 1. Furthermore, at least a portion of the first tube segment 3a is connected to the end of the shaft body 1 by winding and curing, fully utilizing the lightweight and high-strength properties of the composite material of the shaft body 1 and the connecting tube body 3, thereby enhancing the lightweight and durability of the assembled structure of the shaft body 1 and the connecting tube body 3. At least a portion of the second tube segment 3b can be connected to the universal joint 2. For example, at least a portion of the second tube segment 3b and the universal joint 2 can be connected by welding to ensure a good connection and stability between the second tube segment 3b and the universal joint 2, thereby ensuring effective connection and power transmission between the drive shaft assembly 1000 and the drive axle or transmission.

[0056] It should be noted that the outer circumference of the first pipe segment 3a is provided with reinforcing ribs 31 to enhance the strength and reliability of the connection between the first pipe segment 3a and the shaft body 1, thereby improving the torque transmission capacity between the first pipe segment 3a and the shaft body 1. The second pipe segment 3b, however, is used for connection to the universal joint 2. Since the second pipe segment 3b does not need to withstand the same high-intensity torque transmission as the shaft body 1, the outer circumference of the second pipe segment 3b can be omitted from the reinforcing ribs 31 to facilitate welding between the second pipe segment 3b and the universal joint 2. This not only meets functional requirements but also helps to further reduce weight and save material costs.

[0057] like Figure 2-Figure 4As shown, according to some embodiments of the present application, the reinforcing ribs 31 are constructed in plurality and form a row in the circumferential direction of the connecting tube body 3; or the reinforcing ribs 31 are constructed in plurality and divided into a plurality of spaced rows along the axial direction of the connecting tube body 3, and the number of reinforcing ribs 31 in the plurality of rows is the same, or the number of reinforcing ribs 31 in at least one row is different from the number of reinforcing ribs 31 in other rows.

[0058] Specifically, the reinforcing ribs 31 can be constructed in multiple numbers to further improve the bonding between the connecting tube body 3 and the shaft body 1. The multiple reinforcing ribs 31 can be arranged circumferentially and axially on the connecting tube body 3 as needed. For example, the multiple reinforcing ribs 31 can form a single row along the circumference of the connecting tube body 3, or they can be formed into multiple rows spaced axially along the connecting tube body 3. This can be understood as at least one row of reinforcing ribs 31 being provided on the periphery of the connecting tube body 3. In the case where multiple rows of reinforcing ribs 31 spaced axially are provided on the periphery of the connecting tube body 3, the number of reinforcing ribs 31 in the multiple rows of reinforcing ribs 31 can be the same to improve the manufacturing efficiency of the reinforcing ribs 31. The number of reinforcing ribs 31 in at least one row of the multiple rows of reinforcing ribs 31 can also be different from that in the other rows. In this way, the flexibility of the arrangement of the reinforcing ribs 31 can be improved so that it can be adjusted according to specific torque transmission requirements and structural strength requirements.

[0059] like Figure 2-Figure 4 As shown, the plurality of reinforcing ribs 31 are divided into a plurality of spaced rows along the axial direction of the connecting tube body 3 , and the projections of the reinforcing ribs 31 of two adjacent rows in the axial direction of the connecting tube body 3 overlap or intersect.

[0060] Specifically, multiple reinforcing ribs 31 can be formed into multiple rows spaced axially along the connecting tube body 3, and the projections of two adjacent rows of reinforcing ribs 31 in the axial direction of the connecting tube body 3 can be overlapped, so that multiple rows of reinforcing ribs 31 are neatly arranged in the axial direction of the connecting tube body 3, which is conducive to improving the manufacturing convenience of the reinforcing ribs 31 and improving production efficiency; the projections of two adjacent rows of reinforcing ribs 31 in the axial direction of the connecting tube body 3 can also be staggered, and the two axially corresponding reinforcing ribs 31 in the two connected rows of reinforcing ribs 31 have an angle with the axis, for example, they can be set at an angle of 30°, 45°, etc. In this way, on the one hand, the adaptability of the reinforcing ribs 31 to the angle required for the winding process can be improved, which is conducive to improving the winding and curing effect between the connecting tube body 3 and the shaft body 1; on the other hand, the staggered arrangement is also conducive to improving the coverage of the reinforcing ribs 31 in the connecting tube body 3, which can increase the connection area between the connecting tube body 3 and the shaft body 1, and improve the force uniformity of the connecting tube body 3, thereby improving the durability of the connecting tube body 3.

[0061] like Figure 2-Figure 4 As shown, according to some embodiments of the present application, the first reinforcing portion 31 a includes two first sub-reinforcing portions that are opposite to and spaced apart from each other, and the second reinforcing portion 31 b includes two second sub-reinforcing portions that are opposite to and spaced apart from each other.

[0062] The midpoint of the interval between the two first sub-reinforcement portions coincides with the midpoint of the interval between the two second sub-reinforcement portions.

[0063] Specifically, the first reinforcing portion 31 a is composed of two first sub-reinforcing portions that are opposite to each other and spaced apart, and the second reinforcing portion 31 b is composed of two second sub-reinforcing portions that are opposite to each other and spaced apart. The two first sub-reinforcements are respectively located on both sides of the width of the two second sub-reinforcements, and the two first sub-reinforcements are symmetrical with each other about the midpoint of the interval between the two second sub-reinforcements. Similarly, the two second sub-reinforcements are respectively located on both sides of the width of the two first sub-reinforcements, and the two second sub-reinforcements are symmetrical with each other about the midpoint of the interval between the two first sub-reinforcements, and the midpoint of the interval between the two first sub-reinforcements coincides with the midpoint of the interval between the two second sub-reinforcements, so that the first sub-reinforcements and the second sub-reinforcements jointly define a reinforcement rib 31 with good structural symmetry to ensure that the reinforcement rib 31 has good stress dispersion performance and good torsional and bending resistance. In addition, the spacing between the two first sub-reinforcements, between the two second sub-reinforcements, and between the first sub-reinforcements and the second sub-reinforcements increases the coverage area of the reinforcement rib 31 on the connecting tube body 3, increases the contact area between the reinforcement rib 31 and the shaft body 1, and enhances the strength and rigidity of the overall structure after the connecting tube body 3 and the shaft body 1 are assembled.

[0064] like Figure 2-Figure 4 As shown, according to some embodiments of the present application, the first sub-reinforcement portion extends along the axial direction of the connecting tube body 3 , and the second sub-reinforcement portion extends in the circumferential direction of the connecting tube body 3 .

[0065] Specifically, the first sub-reinforcement portion can be constructed to extend axially along the connecting tube body 3, thereby enabling the first sub-reinforcement portion to better withstand axial tension and compression, thereby enhancing the axial strength and rigidity of the drive shaft assembly 1000. The second sub-reinforcement portion can be constructed to extend circumferentially along the connecting tube body 3, thereby enabling the second sub-reinforcement portion to better withstand circumferential torque and bending moment, thereby enhancing the circumferential strength and torsional resistance of the drive shaft assembly 1000. The use of the first and second sub-reinforcements extending axially and circumferentially, respectively, ensures good uniformity and stability in the force applied to the reinforcing rib 31 between the connecting tube body 3 and the shaft body 1. Furthermore, the use of the first and second sub-reinforcements extending axially and circumferentially, respectively, also helps improve manufacturing efficiency and precision during the production process, thereby facilitating improved production efficiency and quality of the drive shaft assembly 1000.

[0066] like Figure 2-Figure 4As shown, according to some embodiments of the present application, the cross-sectional areas of the two first sub-reinforcement portions at one end close to each other gradually increase in the direction away from each other, and the cross-sectional areas of the two first sub-reinforcement portions at one end away from each other gradually decrease in the direction away from each other; the cross-sectional areas of the two second sub-reinforcement portions at one end close to each other gradually increase in the direction away from each other, and the cross-sectional areas of the two second sub-reinforcement portions at one end away from each other gradually decrease in the direction away from each other.

[0067] Specifically, the ends of the two first sub-reinforcements close to each other can be constructed as the first end 311, and the ends of the two first sub-reinforcements away from each other can be constructed as the second end 312. Then, the cross-sectional areas of the two first ends 311 gradually increase in the direction away from each other, and the cross-sectional areas of the two second ends 312 gradually decrease in the direction away from each other. In this way, the two first ends 311 and the two second ends 312 can form a good transition with the outer peripheral surface of the connecting tube body 3, so that the two ends of the first sub-reinforcement are smoothly connected to the outer peripheral surface of the connecting tube body 3 without generating steps, thereby promoting the winding and curing effect between the connecting tube body 3 and the shaft body 1 and the efficiency. rate; the ends of the two second sub-reinforcements close to each other can be constructed as the third end 313, and the ends of the two second sub-reinforcements away from each other can be constructed as the fourth end 314, then the cross-sectional areas of the two third ends 313 gradually increase in the direction away from each other, and the cross-sectional areas of the two fourth ends 314 gradually decrease in the direction away from each other. Similarly, the two third ends 313 and the two fourth ends 314 can form a good transition with the outer peripheral surface of the connecting tube body 3, so that the two ends of the second sub-reinforcement are smoothly connected to the outer peripheral surface of the connecting tube body 3 without generating steps, thereby promoting the winding and curing effect and efficiency between the connecting tube body 3 and the shaft body 1.

[0068] like Figure 1 As shown, according to some embodiments of the present application, the transmission shaft assembly 1000 further includes: a spline connection 4 , which is provided at one end of one of the two universal joints 2 and is suitable for connecting to the connecting pipe body 3 .

[0069] Specifically, the spline connection 4 has a certain length in the axial direction of the shaft body 1. One end of the spline connection 4 is adapted to connect to one of the two universal joints 2, and the other end is adapted to connect to the connecting tube 3 corresponding to the universal joint 2. The spline connection 4 can have a spline structure, which can include a set of evenly distributed key teeth and a set of notches adapted to mate with the multiple key teeth. By matching these key teeth with the corresponding notches, the spline connection 4 can provide a larger contact area in the drive shaft assembly 1000, enhancing the connection's firmness and torsional resistance. The provision of the spline connection 4 between the universal joint 2 and the connecting tube 3 ensures accurate and efficient torque transmission. The spline connection 4 can also be configured to be axially telescopically slidable to accommodate changes in the length of the drive shaft assembly 1000, thereby ensuring smooth and reliable transmission.

[0070] Furthermore, in some specific embodiments of the present application, the spline connection 4 includes a spline shaft 41 and a spline sleeve 42. One axial end of the spline shaft 41 is connected to one of the two universal joints 2, and the spline sleeve 42 is sleeved on the other axial end of the spline shaft 41. The spline sleeve 42 is axially distal to the end of the universal joint 2 connected to the spline shaft 41 and is adapted to be connected to the end of the connecting tube 3 distal to the shaft body 1. The spline shaft 41 can be constructed as a hollow tubular structure to achieve lightweight construction. The spline shaft 41 can have a plurality of circumferentially evenly spaced key teeth on its outer circumference. The spline sleeve 42 can be formed with notches adapted to engage with the key teeth. The spline sleeve 42 is adapted to be connected to the connecting tube 3. Thus, the spline shaft 41 and the spline sleeve 42 can achieve spline transmission between one of the pair of universal joints 2 and the connecting tube 3, thereby achieving spline transmission between one of the universal joints 2 and the shaft body 1, thereby ensuring normal movement and operation of the entire transmission shaft assembly 1000.

[0071] In other specific embodiments of the present application, one connecting tube body 3 and one universal joint 2, and another connecting tube body 3 and the spline connection 4 are constructed as welded connections, for example, through friction welding. Through welding, the overall connectivity of each component can be improved, and the working performance and reliability of the drive shaft assembly 1000 can be improved.

[0072] like Figure 1-Figure 4 As shown, according to the vehicle of the second embodiment of the present application, the vehicle includes: the drive shaft assembly 1000 described in any one of the above embodiments, and the technical effects produced are consistent with those in the above embodiments, which will not be repeated here.

[0073] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0074] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A transmission shaft assembly, characterized in that: include: Axle body (1); Universal joints (2), the universal joints (2) being arranged at both axial ends of the shaft body (1); A connecting tube body (3), wherein the connecting tube body (3) is arranged between the shaft body (1) and the universal joint (2), the connecting tube body (3) and the shaft body (1) are connected by winding and curing, and the connecting portion between the connecting tube body (3) and the shaft body (1) has a protruding reinforcing rib (31) on one side surface facing the shaft body (1) in the radial direction; wherein the reinforcing rib (31) includes a first reinforcing portion (31a) and a second reinforcing portion (31b), wherein the second reinforcing portion (31b) is arranged on both sides of the width of the first reinforcing portion (31a), and the second reinforcing portion (31b) and the first reinforcing portion (31a) have an included angle.

2. The transmission shaft assembly according to claim 1, characterized in that: The shaft body (1) is constructed as a tubular structure with a hollow interior; one end of the connecting tube (3) is arranged in the shaft body (1), and the other end is connected to the universal joint (2).

3. The transmission shaft assembly according to claim 2, characterized in that: The connecting pipe body (3) comprises a first pipe section (3a) and a second pipe section (3b) connected in the axial direction, wherein the first pipe section (3a) is suitable for being connected to the shaft body (1), and the second pipe section (3b) is suitable for being connected to the universal joint (2); wherein the reinforcing rib (31) is provided on the outer peripheral surface of the first pipe section (3a).

4. The transmission shaft assembly according to claim 1, characterized in that: The reinforcing ribs (31) are constructed in a plurality and form a row in the circumferential direction of the connecting tube body (3); or the reinforcing ribs (31) are constructed in a plurality and are divided into a plurality of interval rows along the axial direction of the connecting tube body (3), and the number of the reinforcing ribs (31) in the plurality of rows is the same, or the number of the reinforcing ribs (31) in at least one row is different from the number of the reinforcing ribs (31) in other rows.

5. The transmission shaft assembly according to claim 4, characterized in that: The plurality of reinforcing ribs (31) are divided into a plurality of spaced rows along the axial direction of the connecting tube body (3), and the projections of the reinforcing ribs (31) in two adjacent rows in the axial direction of the connecting tube body (3) overlap or intersect.

6. The transmission shaft assembly according to claim 5, characterized in that: The first reinforcing portion (31a) includes two first sub-reinforcing portions that are opposite to and spaced apart from each other, and the second reinforcing portion (31b) includes two second sub-reinforcing portions that are opposite to and spaced apart from each other; wherein the midpoint position of the interval between the two first sub-reinforcing portions coincides with the midpoint position of the interval between the two second sub-reinforcing portions.

7. The transmission shaft assembly according to claim 6, characterized in that: The first sub-reinforcement portion extends in the axial direction of the connecting tube body (3), and the second sub-reinforcement portion extends in the circumferential direction of the connecting tube body (3).

8. The transmission shaft assembly according to claim 6, characterized in that: The cross-sectional areas of the two first sub-reinforcements at one end close to each other gradually increase in the direction away from each other, and the cross-sectional areas of the two first sub-reinforcements at one end away from each other gradually decrease in the direction away from each other; the cross-sectional areas of the two second sub-reinforcements at one end close to each other gradually increase in the direction away from each other, and the cross-sectional areas of the two second sub-reinforcements at one end away from each other gradually decrease in the direction away from each other.

9. The transmission shaft assembly according to claim 1, characterized in that: Also includes: A spline connection (4) is provided at one end of one of the two universal joints (2) and is suitable for connection with the connecting pipe body (3).

10. A vehicle, characterized in that: include: The transmission shaft assembly according to any one of claims 1 to 9.

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