Output drive mechanism, test apparatus, powertrain, and vehicle

Abstract

The utility model provides a kind of output drive mechanism, test equipment, power assembly and vehicle, output drive mechanism is used for power assembly, power assembly includes differential, output drive mechanism includes: driving part;Transmission shaft subassembly, transmission shaft subassembly includes transmission shaft, transmission shaft one end is connected with driving part, the other end of transmission shaft is used to with differential docking or separating;Sealing assembly, it is located transmission shaft subassembly, and along the radial of transmission shaft, at least a portion of sealing assembly is located the outside of transmission shaft subassembly, in the case where transmission shaft and differential docking, sealing assembly and the end surface of differential abut, without configuring artificial preloading station and dismantling station, when differential and transmission shaft docking, it can be realized to differential oil sealing, greatly save artificial cost and working hours, improve rhythm.And, avoid the risk of differential port knock damage due to artificial disassembly, install skeleton oil seal, it is favorable to guarantee product quality.

Description

Technical Field

[0001] This utility model relates to the field of vehicle off-line testing technology, specifically to an output drive mechanism, testing equipment, powertrain, and vehicle. Background Technology

[0002] The powertrain is a crucial component of a car, and its performance directly impacts the overall driving experience. Powertrain off-line testing is a vital part of powertrain production and quality control. EOL (End of Operation) is a key aspect of powertrain manufacturing. A line (production line end) test bench is a final testing device used to test products before they leave the production line. It can detect various performance indicators of the product, such as electrical, mechanical, and functional properties, to ensure that the product meets specifications and standards. Test results help manufacturers determine whether the product meets quality standards and take necessary adjustments and improvements.

[0003] Currently, test benches typically include an output drive mechanism. The half-shaft of this mechanism connects to the differential of the component under test (DUT), simulating the wheel load of a complete vehicle during testing. In related technologies, when the DUT arrives at the test station, the differential is not yet fitted with a guide oil seal. Therefore, when the half-shaft connects to the differential, a manual pre-installation station is usually added before the DUT enters the test station to manually pre-install the guide oil seal, increasing labor costs and time. Furthermore, the installation of the guide oil seal usually requires manual installation using tooling by hammering or striking, which carries the risk of damaging the guide oil seal and the differential port. Utility Model Content

[0004] The embodiments of this utility model are intended to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, a first aspect of the embodiments of this utility model provides an output drive mechanism.

[0006] A second aspect of the embodiments of this utility model provides a testing device.

[0007] A third aspect of the embodiments of this utility model provides a powertrain.

[0008] A fourth aspect of the embodiments of this utility model provides a vehicle.

[0009] In view of the above, according to a first aspect of the present invention, an output drive mechanism is provided for a powertrain, the powertrain including a differential, the output drive mechanism including: a drive member; a drive shaft assembly including a drive shaft, one end of the drive shaft being connected to the drive member, and the other end of the drive shaft being used for docking or disengaging with the differential; a sealing assembly disposed on the drive shaft assembly and along the radial direction of the drive shaft, at least a portion of the sealing assembly being located outside the drive shaft assembly, and when the drive shaft docks with the differential, the sealing assembly abuts against the end face of the differential.

[0010] The output drive mechanism provided in this embodiment includes a drive component, a transmission shaft assembly, and a sealing assembly. Specifically, the drive component is connected to the transmission shaft. During testing, the test component (powertrain) enters the test station, and the transmission shaft is connected to the differential. During testing, the drive component drives the differential to rotate via the transmission shaft, simulating the load on the wheels of the entire vehicle. This allows for testing of the differential's performance, including but not limited to electrical, mechanical, and functional performance, to ensure that the product meets specifications and quality standards. Optionally, the drive component includes a motor.

[0011] In related technologies, since the tested component (powertrain) does not have a skeleton oil seal installed, the skeleton oil seal needs to be manually installed on the differential before the tested component (powertrain) enters the testing station. After installation, the half-shaft of the output drive mechanism engages with the skeleton oil seal on the tested component to seal the differential oil. After testing, the skeleton oil seal also needs to be manually removed. The need to install and remove the skeleton oil seal increases the manual installation and removal station, leading to increased labor costs and time.

[0012] The sealing assembly is located on the drive shaft assembly, and at least part of the sealing assembly is located on the radially outer side of the drive shaft assembly. That is, the sealing assembly is integrated into the drive shaft assembly of the output drive mechanism. When the drive shaft is connected to the differential, the sealing assembly abuts against the end face of the differential to seal the differential oil.

[0013] By integrating the sealing components into the driveshaft assembly, the differential oil can be sealed simultaneously with the differential's connection to the driveshaft, transmitting torque. This eliminates the need for manual pre-installation and removal stations; the differential oil is sealed automatically during differential-driveshaft connection, significantly reducing labor costs and time, and improving cycle time. Furthermore, it avoids the risk of damage to the differential port caused by manual removal and installation of the skeleton oil seal, thus ensuring product quality.

[0014] Alternatively, the sealing assembly can be an annular sealing assembly.

[0015] In some technical solutions, the sealing assembly optionally includes a seal, a limiting member, and an elastic member, wherein, along the axial direction of the drive shaft, the limiting member is located on the side of the seal facing the drive member, and the elastic member is disposed between the seal and the limiting member; when the drive shaft is connected to the differential, the seal abuts against the end face of the differential, and the elastic member is deformable.

[0016] In this technical solution, the sealing assembly is defined to include a seal, a limiting member, and an elastic member. Specifically, when the differential is connected to the drive shaft, the seal abuts against the end face of the differential to achieve sealing of the differential oil.

[0017] By setting an elastic element between the limiting element and the seal, when the differential is connected to the drive shaft, the elastic element deforms due to the seal abutting against the end face of the differential. Optionally, the elastic element is compressed, so that the seal can be tightly fitted to the end face of the differential under the action of the elastic force of the elastic element, thereby achieving compression and improving the sealing effect of the differential oil.

[0018] Optionally, the elastic element includes a helical spring or a wave spring.

[0019] In some technical solutions, the seal may optionally include a sealing part and a slip ring, wherein, when the drive shaft is connected to the differential, the sealing part abuts against the end face of the differential, the slip ring is connected to the side of the sealing part near the limiting member, and an elastic element is disposed between the limiting member and the slip ring.

[0020] In this technical solution, the sealing element is defined as including a sealing part and a slip ring. Specifically, the slip ring is connected to the sealing part, and the slip ring is located on the side of the sealing part closer to the limiting member. That is to say, the slip ring is located on the side of the sealing part away from the differential.

[0021] Specifically, when the differential is connected to the drive shaft, the sealing part abuts against the end face of the differential, pushing the sealing part to move away from the end face of the differential. At the same time, the sealing part drives the slip ring to move, so that the elastic element is compressed. Under the action of the elastic force of the elastic element, the sealing part can be tightly fitted to the end face of the differential, achieving compression, which is beneficial to improving the sealing effect of the differential oil.

[0022] In addition, by setting a slip ring on the side of the seal that is away from the differential, the overall structural strength of the seal can be improved while ensuring that the elastic element can be effectively compressed, which is beneficial to extending the overall service life of the seal.

[0023] Optionally, the sealing part includes a sealing ring.

[0024] In some technical solutions, optionally, one of the slip ring and the sealing part is provided with a groove, and the other is provided with a protrusion, the protrusion being inserted into the groove so that the sealing part and the slip ring are connected.

[0025] In this technical solution, specifically, the slip ring has a protrusion and the sealing part has a groove. Alternatively, the slip ring has a groove and the sealing part has a protrusion. The specific configuration can be determined according to actual needs.

[0026] Since the protrusion can be inserted into the groove, a reliable connection between the sealing part and the slip ring can be achieved. At the same time, the structure is simple and compact, which helps to reduce the cost of the output drive mechanism.

[0027] In some technical solutions, the output drive mechanism may optionally include a mounting base, which is disposed between the seal and the drive shaft assembly along the radial direction of the drive shaft and connected to the limiting member. The mounting base has a limiting surface on the side opposite to the drive shaft assembly, which is located on the side of the slip ring opposite to the limiting member and extends at least partially along the radial direction of the drive shaft.

[0028] In this technical solution, the output drive mechanism is further defined as including a mounting base. Specifically, along the radial direction of the drive shaft, the mounting base is disposed between the seal and the drive shaft assembly, and the mounting base is connected to the limiting member, thereby achieving reliable fixation of the limiting member.

[0029] The mounting base has a limiting surface on the side opposite to the drive shaft assembly, and at least a portion of the limiting surface extends radially along the drive shaft. Since the limiting surface is located on the side of the slip ring opposite to the limiting element, it can limit the slip ring, preventing the seal from moving excessively under the action of elastic force when the differential is separated from the drive shaft, which helps to improve the overall reliability of the output drive mechanism.

[0030] In some technical solutions, the drive shaft assembly may optionally include a bushing, which is located on the outside of the drive shaft along the radial direction and connected to the drive shaft. A mounting seat is located between the bushing and the seal. The bushing has a limiting portion on the side opposite to the drive shaft, which extends radially along the drive shaft. At least a portion of the mounting seat is located between the limiting portion and the limiting member along the axial direction of the drive shaft.

[0031] In this technical solution, the drive shaft assembly is further defined as including a bushing. Specifically, the bushing is fitted on the radial outer side of the drive shaft, and the mounting seat is disposed between the bushing and the seal, thereby limiting the mounting seat in the radial direction.

[0032] The bushing has a limiting part on the side away from the drive shaft. Along the axial direction of the drive shaft, at least part of the mounting seat is located between the limiting part and the limiting component, thereby limiting the mounting seat in the axial direction. This helps to improve the reliability of the cooperation between the drive shaft assembly and the sealing assembly. The structure is compact. When the differential and the drive shaft are connected, the differential oil is automatically sealed, reducing labor costs and improving cycle time, while also reducing the space occupied.

[0033] In some technical solutions, optionally, the sealing part and the limiting part form a limiting gap along the radial direction of the transmission shaft; wherein, the side of the mounting seat away from the limiting member includes a limiting foot, the limiting foot includes a limiting surface, and at least a portion of the limiting foot is inserted into the limiting gap.

[0034] In this technical solution, since the side of the mounting seat away from the limiting member includes a limiting foot, and at least part of the limiting foot is inserted into the limiting gap formed by the sealing part and the limiting part, it is beneficial to further improve the limiting effect of the mounting seat in the radial direction, making the structure more compact, thereby achieving reliable cooperation between the mounting seat, the sealing assembly and the drive shaft assembly.

[0035] Since the limiting foot includes a limiting surface, that is, the end of the limiting foot away from the drive shaft protrudes outward to form a limiting surface, thereby playing a limiting role for the slip ring.

[0036] In some technical solutions, the output drive mechanism may optionally include a bearing, which is located between the mounting base and the bushing along the radial direction of the drive shaft.

[0037] In this technical solution, the output drive mechanism is further defined as including a bearing. Specifically, along the radial direction of the drive shaft, the bearing is disposed between the mounting base and the bushing. When the drive shaft docks with the differential, the sealing part abuts against the end face of the differential, so as to achieve automatic sealing of the differential oil without affecting the rotation of the drive shaft and ensuring the function of torque transmission.

[0038] In some technical solutions, the bearing may optionally include a deep groove ball bearing, an angular contact bearing, or a thrust ball bearing.

[0039] In this technical solution, the bearing can specifically be a deep groove ball bearing, an angular contact bearing, or a thrust ball bearing. The specific configuration can be determined according to actual needs.

[0040] In some technical solutions, the mounting base may optionally include a base body and a first protrusion, wherein the base body is connected to a limiting member, the first protrusion is provided on the side of the base body facing the bushing, and the limiting member is provided on the side away from the driving member with a second protrusion, the second protrusion, the base body, the first protrusion and the bushing enclose a mounting space, and at least a portion of the bearing is located within the mounting space.

[0041] In this technical solution, the mounting base is defined as including a base body and a first protrusion. Specifically, the first protrusion is disposed on the side of the base body facing the bushing, that is, the first protrusion is disposed on the radially inner side of the base body. A second protrusion is disposed on the side of the limiting member away from the driving member, that is, a second protrusion is disposed on the side of the limiting member facing the mounting base.

[0042] Specifically, the first protrusion, the second protrusion, the seat body, and the bushing enclose and form an installation space. Since at least part of the bearing is located within the installation space, it is possible to connect the drive shaft with the differential and achieve automatic sealing of the differential oil. This does not affect the rotation of the drive shaft, but also helps to improve the installation stability and reliability of the bearing, thereby improving the overall reliability of the output drive mechanism.

[0043] In some technical solutions, the bushing may optionally include a bushing body and a connecting member, wherein a limiting part is provided on the side of the bushing body away from the drive shaft, and the connecting member is connected to the bushing body and the drive shaft and is located on the side of the bearing near the limiting part.

[0044] In this technical solution, the bushing is defined as including a bushing body and a connecting member. Specifically, the connecting member is connected to the bushing body and the drive shaft, that is, the bushing body is fixed to the drive shaft through the connecting member.

[0045] Since the connecting piece is located on the side of the bearing closer to the limiting part, that is, on the side of the bearing away from the limiting part, it can further limit the bearing in the axial direction, which is conducive to further improving the installation stability and reliability of the bearing. At the same time, it can also make the structure more compact.

[0046] In some technical solutions, the output drive mechanism may optionally include a retaining ring, which is located on the outside of the drive shaft along the radial direction of the drive shaft, and on the side of the bushing away from the drive member along the axial direction of the drive shaft.

[0047] In this technical solution, the output drive mechanism is further defined as including a retaining ring. Specifically, the retaining ring is located on the radial outer side of the drive shaft, and along the axial direction of the drive shaft, the retaining ring is located on the side of the bushing away from the drive component. That is, along the axial direction of the drive shaft, the retaining ring is located on the side of the bushing facing the differential, which can limit the bushing and help improve the overall reliability of the output drive mechanism.

[0048] In some technical solutions, the elastic element may optionally include a helical spring or a wave spring.

[0049] In this technical solution, by setting a helical spring or wave spring between the limiting component and the seal, when the differential is connected to the drive shaft, the helical spring or wave spring is compressed because the seal abuts against the end face of the differential. Under the action of the elastic force of the helical spring or wave spring, the seal can be tightly fitted to the end face of the differential, thereby achieving compression and improving the sealing effect on the differential oil.

[0050] In some technical solutions, the sealing part may optionally include a polyurethane sealing part, a nitrile rubber sealing part, or a fluororubber sealing part.

[0051] In this technical solution, the sealing part can specifically be a polyurethane sealing part, a nitrile rubber sealing part, or a fluororubber sealing part. The specific design can be configured according to actual needs.

[0052] In some technical solutions, optionally, a spline is provided at the end of the drive shaft away from the drive component, and the spline is used to mate with the differential spline.

[0053] In this technical solution, a spline is provided at the end of the drive shaft furthest from the drive component; specifically, this spline is used to mate with the differential spline. Optionally, a first spline is provided at the end of the drive shaft furthest from the drive component, and a second spline is provided in the differential; the second spline mates with the first spline. Optionally, if the first spline is an internal spline, the second spline is an external spline. Alternatively, if the first spline is an external spline, the second spline is an internal spline. The specific configuration can be determined according to actual needs.

[0054] Because the drive shaft and differential are connected by a spline, a reliable connection can be achieved when the drive shaft and differential are connected, which helps to improve the reliability of torque transmission.

[0055] According to a second aspect of the present invention, a testing device is provided, including an output drive mechanism as provided by any of the above technical solutions, and thus possesses all the beneficial technical effects of the output drive mechanism, which will not be repeated here.

[0056] According to a third aspect of this utility model, a powertrain is provided, which is tested using the testing equipment provided by any of the above technical solutions, and thus possesses all the beneficial technical effects of the testing equipment, which will not be repeated here.

[0057] According to a fourth aspect of the present invention, a vehicle is provided, including a powertrain as provided by any of the above-described technical solutions, and thus possessing all the beneficial technical effects of the powertrain, which will not be repeated here.

[0058] Additional aspects and advantages of the present invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0059] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0060] Figure 1 A partial structural schematic diagram of an output drive mechanism according to an embodiment of the present invention is shown;

[0061] Figure 2 A partial cross-sectional view of an output drive mechanism according to an embodiment of the present invention is shown;

[0062] Figure 3 A schematic diagram of the output drive mechanism docking with the differential according to an embodiment of the present invention is shown;

[0063] Figure 4 A schematic diagram of a structure in which the output drive mechanism is separated from the differential according to an embodiment of the present invention is shown.

[0064] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0065] 100 Output drive mechanism, 110 Drive component, 120 Drive shaft assembly, 121 Drive shaft, 122 Bushing, 123 Limiting part, 124 Body, 125 Connecting part, 126 Retaining ring, 127 Spline, 130 Sealing assembly, 131 Seal, 132 Limiting part, 133 Elastic part, 134 Sealing part, 135 Slip ring, 136 Groove, 137 Protrusion, 138 Second protrusion, 140 Mounting seat, 141 Limiting surface, 142 Limiting foot, 143 Sealing body, 144 First protrusion, 150 Limiting clearance, 160 Bearing, 170 Mounting space, 200 Powertrain, 210 Differential, 211 End face. Detailed Implementation

[0066] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0067] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0068] The following reference Figures 1 to 4 This invention describes an output drive mechanism 100, a test device, a powertrain 200, and a vehicle provided according to some embodiments of the present invention.

[0069] In one embodiment according to this application, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an output drive mechanism 100 is proposed for a powertrain 200, which includes a differential 210. The output drive mechanism 100 includes: a drive member 110; a drive shaft assembly 120, which includes a drive shaft 121, one end of which is connected to the drive member 110, and the other end of which is used to engage or disengage with the differential 210; and a sealing assembly 130, which is disposed on the drive shaft assembly 120 and along the radial direction of the drive shaft 121. At least a portion of the sealing assembly 130 is located outside the drive shaft assembly 120, and when the drive shaft 121 engages with the differential 210, the sealing assembly 130 abuts against the end face 211 of the differential 210.

[0070] The output drive mechanism 100 provided in this embodiment of the utility model includes a drive component 110, a transmission shaft assembly 120, and a sealing assembly 130. Specifically, the drive component 110 is connected to the transmission shaft 121. During testing, the test component (powertrain 200) enters the test station, and the transmission shaft 121 is connected to the differential 210. During testing, the drive component 110 drives the differential 210 to rotate through the transmission shaft 121, simulating the load on the wheels of the entire vehicle. This allows for testing of the performance of the differential 210, including but not limited to electrical, mechanical, and functional performance, to ensure that the product meets specifications and quality standards. Optionally, the drive component 110 includes a motor.

[0071] In related technologies, since the tested component (powertrain) does not have a skeleton oil seal installed, the skeleton oil seal needs to be manually installed on the differential before the tested component (powertrain) enters the testing station. After installation, the half-shaft of the output drive mechanism engages with the skeleton oil seal on the tested component to seal the differential oil. After testing, the skeleton oil seal also needs to be manually removed. The need to install and remove the skeleton oil seal increases the manual installation and removal station, leading to increased labor costs and time.

[0072] The sealing assembly 130 is disposed on the drive shaft assembly 120, and at least part of the sealing assembly 130 is located on the radially outer side of the drive shaft assembly 120. That is, the sealing assembly 130 is integrated into the drive shaft assembly 120 of the output drive mechanism 100. When the drive shaft 121 is connected to the differential 210, the sealing assembly 130 abuts against the end face 211 of the differential 210 to seal the differential oil.

[0073] By integrating the sealing component 130 onto the driveshaft assembly 120, the differential oil can be sealed simultaneously with the connection between the differential 210 and the driveshaft 121 to transmit torque. This eliminates the need for manual pre-installation and removal stations; the differential oil is sealed automatically when the differential 210 is connected to the driveshaft 121, significantly reducing labor costs and time, and improving cycle time. Furthermore, it avoids the risk of damage to the differential 210 port due to manual removal and installation of the oil seal, thus ensuring product quality.

[0074] Alternatively, the sealing assembly 130 may be an annular sealing assembly.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the sealing assembly 130 includes a seal 131, a limiting member 132, and an elastic member 133, wherein, along the axial direction of the drive shaft 121, the limiting member 132 is located on the side of the seal 131 facing the drive member 110, and the elastic member 133 is disposed between the seal 131 and the limiting member 132; when the drive shaft 121 is connected to the differential 210, the seal 131 abuts against the end face 211 of the differential 210, and the elastic member 133 is deformable.

[0076] In this embodiment, the sealing assembly 130 is defined to include a seal 131, a limiting member 132, and an elastic member 133. Specifically, when the differential 210 is connected to the drive shaft 121, the seal 131 abuts against the end face 211 of the differential 210 to achieve sealing of the differential oil.

[0077] By providing an elastic element 133 between the limiting element 132 and the seal 131, when the differential 210 is connected to the drive shaft 121, the elastic element 133 deforms due to the seal 131 abutting against the end face 211 of the differential 210. Optionally, the elastic element 133 is compressed, so that the seal 131 can be tightly fitted with the end face 211 of the differential 210 under the action of the elastic force of the elastic element 133, thereby achieving compression and improving the sealing effect on the differential oil.

[0078] Optionally, the elastic element 133 includes a helical spring or a wave spring.

[0079] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the seal 131 includes a sealing portion 134 and a slip ring 135, wherein, when the drive shaft 121 is connected to the differential 210, the sealing portion 134 abuts against the end face 211 of the differential 210, the slip ring 135 is connected to the side of the sealing portion 134 near the limiting member 132, and the elastic member 133 is disposed between the limiting member 132 and the slip ring 135.

[0080] In this embodiment, the seal 131 is defined to include a sealing portion 134 and a slip ring 135. Specifically, the slip ring 135 is connected to the sealing portion 134, and the slip ring 135 is located on the side of the sealing portion 134 near the limiting member 132. That is, the slip ring 135 is located on the side of the sealing portion 134 away from the differential 210.

[0081] Specifically, when the differential 210 is connected to the drive shaft 121, the sealing part 134 abuts against the end face 211 of the differential 210, pushing the sealing part 134 to move away from the end face 211 of the differential 210. At the same time, the sealing part 134 drives the slip ring 135 to move, so that the elastic element 133 is compressed. Thus, under the action of the elastic force of the elastic element 133, the sealing part 134 can be tightly fitted with the end face 211 of the differential 210, achieving compression, which is beneficial to improving the sealing effect of the differential oil.

[0082] In addition, by providing a slip ring 135 on the side of the sealing part 134 away from the differential 210, the overall structural strength of the sealing part 131 can be improved while ensuring that the elastic element 133 can be effectively compressed, which is beneficial to extending the overall service life of the sealing part 131.

[0083] Optionally, the sealing part 134 includes a sealing ring.

[0084] like Figure 2 As shown, in some embodiments, optionally, one of the slip ring 135 and the sealing portion 134 is provided with a groove 136, and the other is provided with a protrusion 137, the protrusion 137 being inserted into the groove 136 so that the sealing portion 134 and the slip ring 135 are connected.

[0085] In this embodiment, specifically, the slip ring 135 is provided with a protrusion 137, and the sealing part 134 is provided with a groove 136. Alternatively, the slip ring 135 is provided with a groove 136, and the sealing part 134 is provided with a protrusion 137. The specific configuration can be made according to actual needs.

[0086] Since the protrusion 137 can be inserted into the groove 136, a reliable connection between the sealing part 134 and the slip ring 135 can be achieved. At the same time, the structure is simple and compact, which helps to reduce the cost of the output drive mechanism 100.

[0087] like Figure 2 As shown, in some embodiments, the output drive mechanism 100 may optionally include a mounting base 140, which is disposed between the seal 131 and the drive shaft assembly 120 along the radial direction of the drive shaft 121 and connected to the limiting member 132. The mounting base 140 has a limiting surface 141 on the side opposite to the drive shaft assembly 120. The limiting surface 141 is located on the side of the slip ring 135 opposite to the limiting member 132 and extends at least partially along the radial direction of the drive shaft 121.

[0088] In this embodiment, the output drive mechanism 100 is further defined as including a mounting base 140. Specifically, the mounting base 140 is disposed between the seal 131 and the drive shaft assembly 120 along the radial direction of the drive shaft 121, and the mounting base 140 is connected to the limiting member 132, thereby achieving reliable fixation of the limiting member 132.

[0089] The mounting base 140 has a limiting surface 141 on the side opposite to the drive shaft assembly 120, and at least a portion of the limiting surface 141 extends radially along the drive shaft 121. Since the limiting surface 141 is located on the side of the slip ring 135 opposite to the limiting member 132, it can limit the slip ring 135. When the differential 210 is separated from the drive shaft 121, it prevents the seal 131 from moving excessively under the action of elastic force, which helps to improve the overall reliability of the output drive mechanism 100.

[0090] like Figure 2 As shown, in some embodiments, optionally, the drive shaft assembly 120 further includes a bushing 122. Along the radial direction of the drive shaft 121, the bushing 122 is disposed on the outside of the drive shaft 121 and connected to the drive shaft 121. A mounting seat 140 is disposed between the bushing 122 and the seal 131. The bushing 122 has a limiting portion 123 on the side opposite to the drive shaft 121. The limiting portion 123 extends radially along the drive shaft 121. Along the axial direction of the drive shaft 121, at least a portion of the mounting seat 140 is located between the limiting portion 123 and the limiting member 132.

[0091] In this embodiment, the drive shaft assembly 120 is further defined as including a bushing 122. Specifically, the bushing 122 is fitted on the radially outer side of the drive shaft 121, and the mounting seat 140 is disposed between the bushing 122 and the seal 131, thereby limiting the mounting seat 140 in the radial direction.

[0092] The bushing 122 has a limiting part 123 on the side opposite to the drive shaft 121. Along the axial direction of the drive shaft 121, at least part of the mounting seat 140 is located between the limiting part 123 and the limiting member 132, thereby limiting the mounting seat 140 in the axial direction. This helps to improve the reliability of the cooperation between the drive shaft assembly 120 and the sealing assembly 130. The structure is also compact. When the differential 210 and the drive shaft 121 are connected, the differential oil is automatically sealed, reducing labor costs and improving cycle time, while also reducing the space occupied.

[0093] like Figure 2As shown, in some embodiments, optionally, the sealing portion 134 and the limiting portion 123 form a limiting gap 150 along the radial direction of the drive shaft 121; wherein, the side of the mounting base 140 opposite to the limiting member 132 includes a limiting foot 142, the limiting foot 142 includes a limiting surface 141, and at least a portion of the limiting foot 142 is inserted into the limiting gap 150.

[0094] In this embodiment, since the side of the mounting base 140 away from the limiting member 132 includes a limiting foot 142, and at least a portion of the limiting foot 142 is inserted into the limiting gap 150 formed by the sealing part 134 and the limiting part 123, it is beneficial to further improve the limiting effect of the mounting base 140 in the radial direction, making the structure more compact, thereby achieving reliable cooperation between the mounting base 140, the sealing assembly 130 and the drive shaft assembly 120.

[0095] Since the limiting foot 142 includes a limiting surface 141, that is, the end of the limiting foot 142 away from the drive shaft 121 protrudes outward to form the limiting surface 141, thereby limiting the slip ring 135.

[0096] like Figure 2 As shown, in some embodiments, the output drive mechanism 100 may optionally include a bearing 160 disposed between the mounting base 140 and the bushing 122 along the radial direction of the drive shaft 121.

[0097] In this embodiment, the output drive mechanism 100 is further defined as including a bearing 160. Specifically, along the radial direction of the drive shaft 121, the bearing 160 is disposed between the mounting base 140 and the bushing 122. When the drive shaft 121 docks with the differential 210, the sealing part 134 abuts against the end face 211 of the differential 210, so as to achieve automatic sealing of the differential oil without affecting the rotation of the drive shaft 121 and ensuring the torque transmission function.

[0098] In some embodiments, the bearing 160 may optionally include a deep groove ball bearing, an angular contact bearing, or a thrust ball bearing.

[0099] In this embodiment, specifically, the bearing 160 can be a deep groove ball bearing, an angular contact bearing, or a thrust ball bearing. The specific configuration can be determined according to actual needs.

[0100] like Figure 2As shown, in some embodiments, optionally, the mounting base 140 includes a base body 143 and a first protrusion 144, wherein the base body 143 is connected to the limiting member 132, and the first protrusion 144 is provided on the side of the base body 143 facing the bushing 122; the limiting member 132 is provided on the side away from the driving member 110 with a second protrusion 138, the second protrusion 138, the base body 143, the first protrusion 144 and the bushing 122 enclose to form a mounting space 170, and at least a portion of the bearing 160 is located within the mounting space 170.

[0101] In this embodiment, the mounting base 140 is defined as including a base body 143 and a first protrusion 144. Specifically, the first protrusion 144 is disposed on the side of the base body 143 facing the bushing 122, that is, the first protrusion 144 is disposed on the radially inner side of the base body 143. The limiting member 132 is provided with a second protrusion 138 on the side opposite to the driving member 110, that is, the limiting member 132 is provided with a second protrusion 138 on the side facing the mounting base 140.

[0102] Specifically, the first protrusion 144, the second protrusion 138, the seat body 143, and the bushing 122 enclose and form an installation space 170. Since at least part of the bearing 160 is located within the installation space 170, it is possible to connect the drive shaft 121 with the differential 210 to achieve automatic sealing of the differential oil. This does not affect the rotation of the drive shaft 121, but also helps to improve the installation stability and reliability of the bearing 160, thereby improving the overall reliability of the output drive mechanism 100.

[0103] like Figure 2 As shown, in some embodiments, optionally, the bushing 122 includes a bushing body 124 and a connector 125, wherein the bushing body 124 is provided with a limiting part 123 on the side opposite to the drive shaft 121, and the connector 125 is connected to the bushing body 124 and the drive shaft 121 and is located on the side of the bearing 160 near the limiting part 132.

[0104] In this embodiment, the bushing 122 is defined to include a bushing body 124 and a connector 125. Specifically, the connector 125 is connected to the bushing body 124 and the drive shaft 121. That is, the bushing body 124 is fixed to the drive shaft 121 by the connector 125.

[0105] Since the connecting member 125 is located on the side of the bearing 160 close to the limiting member 132, that is, on the side of the bearing 160 away from the limiting part 123, the connecting member 125 can further limit the bearing 160 in the axial direction, which is conducive to further improving the installation stability and reliability of the bearing 160, and at the same time, it can also make the structure more compact.

[0106] like Figure 2As shown, in some embodiments, the output drive mechanism 100 may optionally include a retaining ring 126, which is disposed on the outer side of the drive shaft 121 along the radial direction of the drive shaft 121, and on the side of the bushing 122 away from the drive member 110 along the axial direction of the drive shaft 121.

[0107] In this embodiment, the output drive mechanism 100 is further defined as including a retaining ring 126. Specifically, the retaining ring 126 is disposed on the radially outer side of the drive shaft 121 and along the axial direction of the drive shaft 121, the retaining ring 126 is located on the side of the bushing 122 away from the drive member 110. That is, along the axial direction of the drive shaft 121, the retaining ring 126 is located on the side of the bushing 122 facing the differential 210, thereby limiting the bushing 122 and improving the overall reliability of the output drive mechanism 100.

[0108] In some embodiments, the elastic element 133 may optionally include a helical spring or a wave spring.

[0109] In this embodiment, by providing a helical spring or wave spring between the limiting member 132 and the sealing member 131, when the differential 210 is connected to the drive shaft 121, the sealing member 131 abuts against the end face 211 of the differential 210, causing the helical spring or wave spring to be compressed. Thus, under the action of the elastic force of the helical spring or wave spring, the sealing member 131 can be tightly fitted to the end face 211 of the differential 210, achieving compression, which is beneficial to improving the sealing effect on the differential oil.

[0110] In some embodiments, the sealing portion 134 may optionally include a polyurethane sealing portion, a nitrile rubber sealing portion, or a fluororubber sealing portion.

[0111] In this embodiment, the sealing part 134 can be a polyurethane sealing part, a nitrile rubber sealing part, or a fluororubber sealing part. The specific configuration can be determined according to actual needs.

[0112] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the end of the drive shaft 121 away from the drive member 110 is provided with a spline 127, which is used to engage with the differential 210 spline.

[0113] In this embodiment, a spline 127 is provided at the end of the drive shaft 121 away from the drive member 110. Specifically, the spline 127 is used to engage with the differential 210. Optionally, a first spline is provided at the end of the drive shaft 121 away from the drive member 110, and a second spline is provided at the differential 210, with the second spline engaging with the first spline. Optionally, if the first spline is an internal spline, the second spline is an external spline. Alternatively, if the first spline is an external spline, the second spline is an internal spline. The specific configuration can be determined according to actual needs.

[0114] Since the drive shaft 121 and the differential 210 are connected by a spline, a reliable connection can be achieved when the drive shaft 121 and the differential 210 are connected, which is beneficial to improving the reliability of torque transmission.

[0115] Based on the user's new assembly process requirements, a differential sealing mechanism (sealing assembly 130) was designed to meet their needs. This mechanism is integrated on the half shaft (drive shaft assembly 120).

[0116] In a specific embodiment, such as Figure 1 and Figure 2 As shown, the differential sealing mechanism (sealing assembly 130) mainly comprises: a half shaft (drive shaft 121), a pressure cap (limiting element 132), a spring (elastic element 133), a bearing housing (mounting seat 140), a bearing 160, a slip ring 135, a sealing ring (sealing part 134), a bushing 122, and a wire retaining ring (retaining ring 126).

[0117] The differential sealing mechanism (sealing assembly 130) is integrated on the half shaft (drive shaft assembly 120). After the half shaft (drive shaft 121) is connected to the differential 210 of the test component (powertrain 200), the sealing ring (sealing part 134) will simultaneously contact the end face 211 of the differential 210 and compress the spring (elastic element 133). The spring force of the spring causes the sealing ring to seal the differential oil.

[0118] During testing, the half-shaft (drive shaft 121) needs to drive the differential 210 to rotate, but the sealing ring (sealing part 134) cannot rotate. Therefore, a bearing 160 is added. The spring force of the spring (elastic element 133) fixes the parts installed on the outer ring of the bearing 160, so as not to affect the rotation of the half-shaft (drive shaft 121).

[0119] By integrating the differential oil sealing mechanism (sealing assembly 130) onto the half-shaft (driveshaft assembly 120), the differential oil can be sealed simultaneously with the splined connection of the differential 210. This enables automatic connection and sealing, eliminating the need for additional manual workstations, significantly saving labor costs and time, and improving cycle time. Furthermore, it avoids the risk of damage to the differential 210 port due to manual disassembly and assembly of the skeleton oil seal, thus ensuring product quality.

[0120] According to a second aspect of the present invention, a testing device is provided, including an output drive mechanism 100 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the output drive mechanism 100, which will not be repeated here.

[0121] The output drive mechanism 100 includes a drive component 110, a drive shaft assembly 120, and a sealing assembly 130. Specifically, the drive component 110 is connected to the drive shaft 121. During testing, the test component (powertrain 200) enters the test station, and the drive shaft 121 is connected to the differential 210. During testing, the drive component 110 drives the differential 210 to rotate via the drive shaft 121, simulating the load on the wheels of the entire vehicle. This allows for testing of the performance of the differential 210, including but not limited to electrical, mechanical, and functional performance, to ensure that the product meets specifications and quality standards. Optionally, the drive component 110 includes a motor.

[0122] In related technologies, since the tested component (powertrain) does not have a skeleton oil seal installed, the skeleton oil seal needs to be manually installed on the differential before the tested component (powertrain) enters the testing station. After installation, the half-shaft of the output drive mechanism engages with the skeleton oil seal on the tested component to seal the differential oil. After testing, the skeleton oil seal also needs to be manually removed. The need to install and remove the skeleton oil seal increases the manual installation and removal station, leading to increased labor costs and time.

[0123] The sealing assembly 130 is disposed on the drive shaft assembly 120, and at least part of the sealing assembly 130 is located on the radially outer side of the drive shaft assembly 120. That is, the sealing assembly 130 is integrated into the drive shaft assembly 120 of the output drive mechanism 100. When the drive shaft 121 is connected to the differential 210, the sealing assembly 130 abuts against the end face 211 of the differential 210 to seal the differential oil.

[0124] By integrating the sealing component 130 onto the driveshaft assembly 120, the differential oil can be sealed simultaneously with the connection between the differential 210 and the driveshaft 121 to transmit torque. This eliminates the need for manual pre-installation and removal stations; the differential oil is sealed automatically when the differential 210 is connected to the driveshaft 121, significantly reducing labor costs and time, and improving cycle time. Furthermore, it avoids the risk of damage to the differential 210 port due to manual removal and installation of the oil seal, thus ensuring product quality.

[0125] like Figure 1 and Figure 2As shown, in some embodiments, optionally, the sealing assembly 130 includes a seal 131, a limiting member 132, and an elastic member 133, wherein, along the axial direction of the drive shaft 121, the limiting member 132 is located on the side of the seal 131 facing the drive member 110, and the elastic member 133 is disposed between the seal 131 and the limiting member 132; when the drive shaft 121 is connected to the differential 210, the seal 131 abuts against the end face 211 of the differential 210, and the elastic member 133 is deformable.

[0126] In this embodiment, the sealing assembly 130 is defined to include a seal 131, a limiting member 132, and an elastic member 133. Specifically, when the differential 210 is connected to the drive shaft 121, the seal 131 abuts against the end face 211 of the differential 210 to achieve sealing of the differential oil.

[0127] By providing an elastic element 133 between the limiting element 132 and the seal 131, when the differential 210 is connected to the drive shaft 121, the elastic element 133 deforms due to the seal 131 abutting against the end face 211 of the differential 210. Optionally, the elastic element 133 is compressed, so that the seal 131 can be tightly fitted with the end face 211 of the differential 210 under the action of the elastic force of the elastic element 133, thereby achieving compression and improving the sealing effect on the differential oil.

[0128] Optionally, the elastic element 133 includes a helical spring or a wave spring.

[0129] According to a third aspect of the present invention, a powertrain 200 is provided, which is tested using the testing equipment provided in any of the above embodiments, and thus possesses all the beneficial technical effects of the testing equipment, which will not be repeated here.

[0130] Optionally, the powertrain 200 includes a differential 210. It is understandable that the powertrain is a crucial component of a vehicle, and its performance directly affects the overall driving experience. Powertrain off-line testing is an important part of powertrain production and quality control. EOL (End of Operation) A line (production line end) test bench is a final testing device used to test products before they leave the production line. It can detect various performance indicators of the product, such as electrical, mechanical, and functional properties, to ensure that the product meets specifications and standards. Test results help manufacturers determine whether the product meets quality standards and take necessary adjustments and improvements.

[0131] When the test component (powertrain 200) needs to be tested, it enters the test station, and the drive shaft 121 is connected to the differential 210. During testing, the drive component 110 drives the differential 210 to rotate via the drive shaft 121, simulating the load on the wheels of the entire vehicle. This allows for the testing of the differential 210's performance, including but not limited to electrical, mechanical, and functional performance, to ensure the product meets specifications and quality standards. Optionally, the drive component 110 may include a motor.

[0132] In related technologies, since the tested component (powertrain) does not have a skeleton oil seal installed, the skeleton oil seal needs to be manually installed on the differential before the tested component (powertrain) enters the testing station. After installation, the half-shaft of the output drive mechanism engages with the skeleton oil seal on the tested component to seal the differential oil. After testing, the skeleton oil seal also needs to be manually removed. The need to install and remove the skeleton oil seal increases the manual installation and removal station, leading to increased labor costs and time.

[0133] The sealing assembly 130 is disposed on the drive shaft assembly 120, and at least part of the sealing assembly 130 is located on the radially outer side of the drive shaft assembly 120. That is, the sealing assembly 130 is integrated into the drive shaft assembly 120 of the output drive mechanism 100. When the drive shaft 121 is connected to the differential 210, the sealing assembly 130 abuts against the end face 211 of the differential 210 to seal the differential oil.

[0134] By integrating the sealing component 130 onto the driveshaft assembly 120, the differential oil can be sealed simultaneously with the connection between the differential 210 and the driveshaft 121 to transmit torque. This eliminates the need for manual pre-installation and removal stations; the differential oil is sealed automatically when the differential 210 is connected to the driveshaft 121, significantly reducing labor costs and time, and improving cycle time. Furthermore, it avoids the risk of damage to the differential 210 port due to manual removal and installation of the oil seal, thus ensuring product quality.

[0135] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the sealing assembly 130 includes a seal 131, a limiting member 132, and an elastic member 133, wherein, along the axial direction of the drive shaft 121, the limiting member 132 is located on the side of the seal 131 facing the drive member 110, and the elastic member 133 is disposed between the seal 131 and the limiting member 132; when the drive shaft 121 is connected to the differential 210, the seal 131 abuts against the end face 211 of the differential 210, and the elastic member 133 is deformable.

[0136] In this embodiment, the sealing assembly 130 is defined to include a seal 131, a limiting member 132, and an elastic member 133. Specifically, when the differential 210 is connected to the drive shaft 121, the seal 131 abuts against the end face 211 of the differential 210 to achieve sealing of the differential oil.

[0137] By providing an elastic element 133 between the limiting element 132 and the seal 131, when the differential 210 is connected to the drive shaft 121, the elastic element 133 deforms due to the seal 131 abutting against the end face 211 of the differential 210. Optionally, the elastic element 133 is compressed, so that the seal 131 can be tightly fitted with the end face 211 of the differential 210 under the action of the elastic force of the elastic element 133, thereby achieving compression and improving the sealing effect on the differential oil.

[0138] Optionally, the elastic element 133 includes a helical spring or a wave spring.

[0139] According to a fourth aspect of the present invention, a vehicle is provided, including a powertrain 200 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the powertrain 200, which will not be repeated here.

[0140] Optionally, the vehicle includes new energy vehicles.

[0141] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0142] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. 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.

[0143] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An output drive mechanism, characterized in that, For a powertrain, the powertrain including a differential, the output drive mechanism including: Drive components; A driveshaft assembly, the driveshaft assembly including a driveshaft, one end of the driveshaft being connected to the drive component, and the other end of the driveshaft being used to engage or disengage with the differential; A sealing assembly is disposed on the driveshaft assembly and along the radial direction of the driveshaft, at least a portion of the sealing assembly being located outside the driveshaft assembly, wherein, when the driveshaft is mated with the differential, the sealing assembly abuts against the end face of the differential.

2. The output drive mechanism according to claim 1, characterized in that, The sealing assembly includes: Seals; A limiting member is located along the axial direction of the drive shaft, on the side of the seal facing the drive member; An elastic element is disposed between the sealing element and the limiting element; In the case where the drive shaft is connected to the differential, the seal abuts against the end face of the differential, and the elastic element is deformable.

3. The output drive mechanism according to claim 2, characterized in that, The sealing element includes: The sealing part abuts against the end face of the differential when the drive shaft is connected to the differential; A slip ring is connected to the side of the sealing portion near the limiting member, and the elastic member is disposed between the limiting member and the slip ring.

4. The output drive mechanism according to claim 3, characterized in that, One of the slip ring and the sealing part is provided with a groove, and the other is provided with a protrusion. The protrusion is inserted into the groove so that the sealing part and the slip ring are connected.

5. The output drive mechanism according to claim 3, characterized in that, Also includes: A mounting base, located radially along the drive shaft, is positioned between the seal and the drive shaft assembly and is connected to the limiting member. The mounting base has a limiting surface on the side opposite to the drive shaft assembly. The limiting surface is located on the side of the slip ring opposite to the limiting member and extends at least partially along the radial direction of the drive shaft.

6. The output drive mechanism according to claim 5, characterized in that, The drive shaft assembly also includes: A bushing, along the radial direction of the drive shaft, is disposed on the outside of the drive shaft and connected to the drive shaft; the mounting seat is disposed between the bushing and the seal. The bushing has a limiting part on the side opposite to the drive shaft. The limiting part extends radially along the drive shaft and axially along the drive shaft. At least a portion of the mounting base is located between the limiting part and the limiting member.

7. The output drive mechanism according to claim 6, characterized in that, Along the radial direction of the drive shaft, the sealing part and the limiting part form a limiting gap; The mounting base includes a limiting foot on the side opposite to the limiting member, the limiting foot includes the limiting surface, and at least a portion of the limiting foot is inserted into the limiting gap.

8. The output drive mechanism according to claim 6, characterized in that, Also includes: A bearing, located radially along the drive shaft, is positioned between the mounting base and the bushing.

9. The output drive mechanism according to claim 8, characterized in that, The bearings include deep groove ball bearings, angular contact bearings, or thrust ball bearings.

10. The output drive mechanism according to claim 8, characterized in that, The mounting base includes: The seat body is connected to the limiting member; The first protrusion is provided on the side of the seat body facing the bushing; The limiting member has a second protrusion on the side opposite to the driving member. The second protrusion, the seat body, the first protrusion, and the bushing enclose an installation space, and at least a portion of the bearing is located within the installation space.

11. The output drive mechanism according to claim 8, characterized in that, The bushing includes: The sleeve body has the limiting part on the side of the sleeve body opposite to the drive shaft; The connector is connected to the sleeve body and the drive shaft, and is located on the side of the bearing near the limiting member.

12. The output drive mechanism according to claim 6, characterized in that, Also includes: A retaining ring is provided on the outer side of the drive shaft along the radial direction and along the axial direction of the drive shaft, on the side of the bushing away from the drive member.

13. The output drive mechanism according to any one of claims 2 to 12, characterized in that, The elastic element includes a helical spring or a wave spring.

14. The output drive mechanism according to any one of claims 3 to 12, characterized in that, The sealing part includes a polyurethane sealing part, a nitrile rubber sealing part, or a fluororubber sealing part.

15. The output drive mechanism according to any one of claims 1 to 12, characterized in that, The drive shaft is provided with a spline at the end away from the drive component, and the spline is used to cooperate with the differential spline.

16. A testing device, characterized in that, Includes the output drive mechanism as described in any one of claims 1 to 15.

17. A powertrain, characterized in that, The test was performed using the test equipment as described in claim 16.

18. A vehicle, characterized in that, Including the powertrain as described in claim 17.

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