Input shaft, generator and vehicle

Abstract

The utility model discloses an input shaft, a generator and a vehicle, relates to the technical field of hybrid vehicles, and aims to solve the problem of high machining cost of an existing input shaft. The input shaft comprises a shaft body and a connecting piece. The shaft body is used for sleeving the rotor assembly. The connecting piece is located on the peripheral side of the shaft body and connected with the shaft body. The connecting piece is used for being connected with a rotor assembly. The input shaft is used for driving the rotor assembly to rotate.

Description

Technical Field

[0001] The present application relates to the technical field of hybrid vehicles, and in particular to an input shaft, a generator and a vehicle. Background Art

[0002] With the development of the automobile industry, users have higher and higher requirements for the cost and experience of using cars. Therefore, extended-range electric vehicles have come into being. Compared with pure electric vehicles, extended-range electric vehicles have a range extender system. The range extender system generally includes an engine and a generator. The engine can drive the generator to generate electricity, and the generator can charge the power battery. Therefore, extended-range electric vehicles have the advantage of long cruising range and are very popular among consumers.

[0003] A generator generally includes an input shaft, a rotor and a stator. The rotor is sleeved on the input shaft. When the input shaft rotates, it can drive the rotor to rotate. When the rotor rotates relative to the stator, the stator can cut the magnetic lines of force, thereby generating an induced potential, thereby achieving the purpose of the generator generating electricity.

[0004] In the prior art, in order to enable the input shaft to drive the rotor to rotate when it rotates, a keyway is provided on the circumference of the input shaft, and after the rotor is sleeved on the input shaft, a part of the rotor is engaged in the keyway. However, since the input shaft needs to be heat treated to improve its mechanical properties, the tool is prone to breakage when machining the keyway on the input shaft after heat treatment, resulting in a high machining cost for the input shaft. Utility Model Content

[0005] One of the purposes of the present application is to provide an input shaft to solve the problem of high processing cost of existing input shafts; the second purpose is to provide a generator; and the third purpose is to provide a vehicle.

[0006] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0007] An input shaft comprises a shaft body and a connecting piece. The shaft body is used to sleeve a rotor assembly. The connecting piece is located on the circumference of the shaft body and connected to the shaft body. The connecting piece is used to connect to the rotor assembly.

[0008] According to the above technical means, the shaft body can be used to connect with the engine. Driven by the engine, the shaft body can rotate around its axis. Since the connecting member is connected to the shaft body, and the connecting member can be connected to the rotor assembly, under the action of the connecting member, the rotor assembly sleeved on the shaft body can be fixed on the shaft body. When the shaft body rotates around its axis driven by the engine, the rotor assembly can also rotate around the axis of the shaft body.

[0009] After the rotor assembly is sleeved on the shaft body, it can be fixed on the shaft body by connecting with the connecting piece, so that it can rotate with the shaft body. The rotor assembly does not need to be clamped in the keyway on the shaft body to rotate with the shaft body, and there is no need to open a keyway on the shaft body, which effectively avoids the occurrence of tool breakage when processing the keyway, thereby effectively reducing the processing cost of the input shaft.

[0010] Furthermore, the connecting piece has a connecting hole, which is used for bolts to penetrate through, so that the connecting piece and the rotor assembly are connected by bolts.

[0011] According to the above technical means, by opening a connection hole on the connecting member, a bolt can be inserted into the connection hole, so that the connecting member and the rotor assembly can be connected together by bolts. Since the bolt connection is more reliable and less prone to failure, after the connecting member and the rotor assembly are connected together by bolts, the connection between the two is relatively stable, thereby effectively ensuring that the generator can operate reliably and stably.

[0012] Furthermore, there are multiple connection holes, and the multiple connection holes are evenly spaced along the circumference of the shaft body.

[0013] According to the above technical means, since the connecting member has multiple connecting holes and the multiple connecting holes are evenly spaced along the circumference of the shaft body, the connecting member and the rotor assembly can be connected with multiple bolts, thereby making the connection between the connecting member and the rotor assembly more reliable and stable.

[0014] Furthermore, the shape of the connecting piece is an annular plate and the connecting piece is arranged perpendicular to the shaft body.

[0015] According to the above technical means, after the annular plate-shaped connecting member is connected to the rotor assembly, the contact area between the connecting member and the rotor assembly is larger, so that the friction between the connecting member and the rotor assembly is larger, which effectively prevents the connecting member and the rotor assembly from separating, improves the firmness of the connection between the connecting member and the rotor assembly, and further ensures the reliability of the connection between the connecting member and the rotor assembly.

[0016] Furthermore, the connecting piece and the shaft body are integrally formed.

[0017] According to the above technical means, the connection between the connecting piece and the shaft body is relatively firm, and the two are not easily separated.

[0018] Furthermore, a conveying channel is formed inside the shaft body, one end of which is connected to the outside of the shaft body, and a discharge hole is formed on the circumference of the shaft body, which is connected to the other end of the conveying channel.

[0019] According to the above technical means, since one end of the delivery channel is connected to the outside of the shaft body, the cooling oil can enter the delivery channel through the one end of the delivery channel. Since the discharge hole on the circumferential side of the shaft body is connected to the other end of the delivery channel, the cooling oil in the delivery channel can be discharged from the discharge hole, thereby cooling the rotor assembly sleeved on the circumferential side of the shaft body.

[0020] Furthermore, the number of the discharge holes is multiple and the multiple discharge holes are evenly spaced along the circumference of the shaft body.

[0021] According to the above technical means, by evenly arranging multiple discharge holes on the shaft body, the cooling oil in the conveying channel can be discharged from the multiple discharge holes, so that more cooling oil flows to the rotor assembly, effectively improving the cooling efficiency of the rotor assembly.

[0022] A generator comprises a housing, a stator, any one of the above-mentioned input shafts, and a rotor assembly. A mounting cavity is formed inside the housing. The stator is located in the mounting cavity and connected to the housing. The stator is annular, and a placement space is formed inside. The shaft body is located in the placement space and is rotatably connected to the housing. The extension direction of the shaft body is the same as the extension direction of the stator. The rotor assembly is located in the placement space. A rotation hole is opened on the rotor assembly, the shaft body is inserted into the rotation hole, and the connecting piece is connected to the rotor assembly. The rotor assembly is used to generate a magnetic field.

[0023] Furthermore, the rotor assembly includes a rotor hub and a rotor core. A rotation hole is formed on the rotor hub. The rotor hub is connected to a connecting piece. The rotor core is annular. The rotor core is arranged around the rotor hub along the circumference of the rotation hole. The rotor core is used to generate a magnetic field.

[0024] The rotor hub includes a support portion and a connection portion. A rotation hole is formed on the support portion. The support portion is connected to a connection piece. Along the circumference of the rotation hole, the connection portion is arranged around the support portion, and the rotor core is arranged around the connection portion. Along the axial direction of the rotation hole, the thickness of the support portion is smaller than the thickness of the connection portion.

[0025] A vehicle comprises an engine and any one of the above generators. The engine has an output shaft. The shaft body is connected to the output shaft.

[0026] Beneficial effects of this application:

[0027] (1) After the rotor assembly is sleeved on the shaft body, it can be fixed on the shaft body by connecting with the connecting piece, so that it can rotate with the shaft body. The rotor assembly does not need to be clamped in the keyway on the shaft body to rotate with the shaft body, and there is no need to open a keyway on the shaft body, which effectively avoids the occurrence of tool breakage when machining the keyway, thereby effectively reducing the machining cost of the input shaft.

[0028] (2) By opening a connection hole on the connecting piece, a bolt can be inserted into the connection hole, so that the connecting piece and the rotor assembly can be connected together by bolts. Since the bolt connection is more reliable and less prone to failure, after the connecting piece and the rotor assembly are connected together by bolts, the connection between the two is relatively stable, thereby effectively ensuring that the generator can operate reliably and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the assembly of the input shaft and other components of the generator provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of an input shaft provided in an embodiment of the present application;

[0031] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0032] Figure 4 for Figure 3 Sectional view at the middle BB;

[0033] Figure 5 for Figure 3 Sectional view at CC;

[0034] Figure 6 One of the partial schematic diagrams of the input shaft provided in the embodiment of the present application;

[0035] Figure 7 The second partial schematic diagram of the input shaft provided in the embodiment of the present application;

[0036] Figure 8 for Figure 1 A partial enlarged view of .

[0037] Among them, 100-input shaft; 200-rotor assembly; 300-rotor rotor; 201-rotating hole; 202-rotor hub; 203-rotor core; 204-circulation hole; 2021-support part; 2022-connecting part; 1-shaft body; 2-connecting piece; 3-first mounting piece; 4-second mounting piece; 11-delivery channel; 12-discharge hole; 13-first shaft section; 14-second shaft section; 15-third shaft section; 16-fourth shaft section; 17-fifth shaft section; 18-sixth shaft section; 131-external spline; 132-thrust pin hole; 181-oil inlet hole; 21-connecting hole; 151-chamfer; 161-groove; 162-avoidance groove; 31-degassing groove; 41-guide angle. DETAILED DESCRIPTION

[0038] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0039] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0040] The embodiment of the present application provides a vehicle, which may include a chassis, a battery, a motor, a body, an engine, and a generator. The type of vehicle is not specifically limited here, and illustratively, the vehicle is an extended-range electric vehicle.

[0041] Among them, the battery, motor, body, engine and generator are arranged on the chassis. The chassis can support and install the battery, motor, body, engine, generator and other components and assemblies of the vehicle to form the overall shape of the vehicle.

[0042] The motor is connected to a battery. The battery can store electrical energy, so as to provide electrical energy to the motor so that the motor can operate.

[0043] The motor is the vehicle's power unit, providing power for the vehicle to move on the ground.

[0044] The interior of the vehicle body forms a cabin, which can be used for the driver, passengers or cargo. It should be noted that when the vehicle is a bus or a car, its body is generally an integral structure. When the vehicle is a truck, its body is generally composed of a cab and a cargo box.

[0045] The engine has an output shaft, and the output shaft is connected to the generator. The engine can output power to the generator through the output shaft, thereby driving the generator to generate electricity.

[0046] The generator is connected to the battery, and the electrical energy generated by the generator can be stored in the battery.

[0047] The following is a detailed introduction to the generator in the vehicle provided in the embodiment of the present application. The generator provided in the embodiment of the present application may include a housing, a stator, an input shaft and a rotor assembly.

[0048] The housing has an installation cavity formed inside. The stator is located in the installation cavity and connected to the housing. The installation cavity inside the housing can provide an installation location for the stator and other components of the generator.

[0049] The stator is annular, and the interior of the stator forms a placement space. The input shaft is located in the placement space and is rotatably connected to the housing. The extension direction of the input shaft is the same as the extension direction of the stator. The rotor assembly is located in the placement space.

[0050] like Figure 1 As shown, Figure 1 The schematic diagram of the assembly of the input shaft 100 and other components in the generator provided in the embodiment of the present application is that a rotation hole 201 is provided on the rotor assembly 200. The input shaft 100 is inserted into the rotation hole 201 and connected to the rotor assembly 200.

[0051] The placement space inside the stator can provide a mounting position for the input shaft 100 and the rotor assembly 200. The input shaft 100 can be connected to the output shaft of the engine, and driven by the output shaft of the engine, the input shaft 100 can rotate around its axis.

[0052] Since the rotor assembly 200 can be sleeved on the outside of the input shaft 100 through the rotation hole 201 and connected to the input shaft 100 , when the input shaft 100 rotates around its axis, it can drive the rotor assembly 200 to rotate together.

[0053] The rotor assembly 200 is used to generate a magnetic field. When the rotor assembly 200 rotates relative to the stator in the placement space, the rotor assembly 200 becomes a rotating magnetic field. At this time, the stator can cut the magnetic lines of force, thereby generating an induced potential, thereby achieving the purpose of the generator generating electricity.

[0054] Continue to see Figure 1 In some embodiments, the rotor assembly 200 may include a rotor hub 202 and a rotor core 203. The rotor hub 202 is provided with a rotation hole 201. The input shaft 100 is inserted into the rotation hole 201 and connected to the rotor hub 202. When the input shaft 100 rotates around its axis, it can drive the rotating hub to rotate together.

[0055] The rotor core 203 is annular. Along the circumference of the rotating hole 201, the rotor core 203 is arranged around the rotor hub 202. The rotor core 203 can be used to generate a magnetic field. When the rotor hub 202 rotates around the axis of the rotating hole 201, it can drive the rotor core 203 to rotate together, so that the rotor core 203 can become a rotating magnetic field.

[0056] Continue to see Figure 1The rotor hub 202 may include a support portion 2021 and a connection portion 2022. The support portion 2021 is provided with a rotation hole 201. The support portion 2021 may be used to connect with the input shaft 100.

[0057] Along the circumference of the rotating hole 201, the connecting portion 2022 is arranged around the supporting portion 2021, and the rotor core 203 is arranged around the connecting portion 2022. The rotor core 203 can be connected to the supporting portion 2021 through the connecting portion 2022, so that it can rotate under the drive of the input shaft 100.

[0058] Along the axial direction of the rotating hole 201, the thickness of the support portion 2021 is smaller than the thickness of the connecting portion 2022. Since the support portion 2021 is sleeved on the outside of the input shaft 100 through the rotating hole 201, by setting the thickness of the support portion 2021 to be smaller than the thickness of the connecting portion 2022, along the axial direction of the input shaft 100, the length of the input shaft 100 occupied by the support portion 2021 is smaller, thereby effectively shortening the axial length of the input shaft 100, thereby making the size of the entire generator smaller, and effectively reducing the difficulty of arranging the generator on the vehicle.

[0059] The input shaft 100 in the generator provided in the embodiment of the present application is described in detail below. Figure 2 As shown, Figure 2 The schematic diagram of the input shaft 100 provided in the embodiment of the present application, the input shaft 100 provided in the embodiment of the present application may include a shaft body 1 and a connector 2. The shaft body 1 may be used to connect with the output shaft of the engine. Driven by the output shaft of the engine, the shaft body 1 may rotate around its axis. The shaft body 1 may also be used to sleeve the rotor assembly 200.

[0060] The connector 2 is located on the circumferential side of the shaft body 1 and is connected to the shaft body 1. The connector 2 can be used to connect to the rotor assembly 200 ( Figure 1 ) connection. In this way, since the connecting member 2 is connected to the shaft body 1, and the connecting member 2 can be connected to the rotor assembly 200, under the action of the connecting member 2, the rotor assembly 200 sleeved on the shaft body 1 can be fixed on the shaft body 1. When the shaft body 1 rotates around its axis driven by the output shaft of the engine, the rotor assembly 200 can also rotate around the axis of the shaft body 1.

[0061] After the rotor assembly 200 is sleeved on the shaft body 1, it can be fixed on the shaft body 1 by connecting with the connecting piece 2, so that it can rotate together with the shaft body 1. The rotor assembly 200 does not need to be clamped in the keyway on the shaft body 1 to rotate together with the shaft body 1, and there is no need to open a keyway on the shaft body 1, which effectively avoids the occurrence of tool breakage when processing the keyway, thereby effectively reducing the processing cost of the input shaft 100.

[0062] It should be noted that when the input shaft 100 includes a shaft body 1 and a connector 2, the shaft body 1 of the input shaft 100 is located in the placement space and is rotatably connected to the housing. The extension direction of the shaft body 1 is the same as the extension direction of the stator. The shaft body 1 of the input shaft 100 is inserted into the rotating hole 201. The connector 2 of the input shaft 100 is connected to the rotor assembly 200.

[0063] Since the rotor assembly 200 sleeved on the input shaft 100 generates heat during the power generation process of the generator, in order to dissipate the heat of the rotor assembly 200, in some embodiments, such as Figure 3 As shown, Figure 3 for Figure 2 In the cross-sectional view at AA, a conveying channel 11 is formed inside the shaft body 1. One end of the conveying channel 11 is connected to the outside of the shaft body 1. A discharge hole 12 is opened on the circumference of the shaft body 1, and the discharge hole 12 is connected to the other end of the conveying channel 11.

[0064] Since one end of the delivery channel 11 is connected to the outside of the shaft body 1, the cooling oil can enter the delivery channel 11 through the one end of the delivery channel 11. Since the discharge hole 12 on the circumference of the shaft body 1 is connected to the other end of the delivery channel 11, the cooling oil in the delivery channel 11 can be discharged from the discharge hole 12, so that the rotor assembly 200 sleeved on the circumference of the shaft body 1 can be cooled.

[0065] The extending direction of the conveying channel 11 can be specifically set according to actual conditions. For example, the extending direction of the conveying channel 11 is the same as the extending direction of the shaft body 1. At this time, one end of the conveying channel 11 is connected to the end surface of one end of the shaft body 1.

[0066] The method of delivering cooling oil to the delivery channel 11 can be specifically selected according to actual conditions. For example, the generator may include an oil pump, and the outlet of the oil pump is connected to one end of the delivery channel 11. Under the action of the oil pump, the cooling oil can be discharged into the delivery channel 11.

[0067] It should be noted that when the rotor assembly 200 includes the rotor hub 202 and the rotor core 203 , the rotor core 203 will generate heat during the power generation process of the generator.

[0068] In order to enable the cooling oil discharged from the discharge hole 12 to cool the rotor core 203 in the rotor assembly 200, as shown in FIG. Figure 1 As shown, a flow hole 204 may be provided on the hole wall of the rotating hole 201 of the rotor hub 202, and the flow hole 204 is connected to the outer wall of the rotor hub 202, and the flow hole 204 is arranged opposite to the discharge hole 12. In this way, the cooling oil discharged from the discharge hole 12 can enter the flow hole 204, and then can be discharged from the outer wall of the rotor hub 202, so as to cool the rotor core 203 located on the outer wall.

[0069] In order to improve the cooling efficiency of the rotor assembly 200, in some embodiments, as Figure 4 As shown, Figure 4 for Figure 3 In the cross-sectional view at BB, there are multiple discharge holes 12. Multiple discharge holes 12 are evenly spaced along the circumference of the shaft body 1. In this way, by evenly arranging multiple discharge holes 12 on the shaft body 1, the cooling oil in the delivery channel 11 can be discharged from the multiple discharge holes 12, so that more cooling oil flows to the rotor assembly 200, effectively improving the cooling efficiency of the rotor assembly 200.

[0070] The number of the discharge holes 12 can be specifically set according to actual needs. For example, the number of the discharge holes 12 is four. It can be understood that when the number of the discharge holes 12 on the shaft body 1 is four, the number of the flow holes 204 on the rotor hub 202 is also set to four. The four flow holes 204 are set in a one-to-one correspondence with the four discharge holes 12.

[0071] In order to achieve the connection between the connector 2 and the rotor assembly 200, in some embodiments, continue to refer to Figure 4 The connecting member 2 has a connecting hole 21. The connecting hole 21 is used to allow a bolt to penetrate so that the connecting member 2 and the rotor assembly 200 ( Figure 1 ) are connected by bolts.

[0072] It should be noted that a relief hole is provided on the rotor assembly 200. Bolts can be passed through the relief hole of the rotor assembly 200 and the connecting hole 21 of the connecting member 2 to connect the rotor assembly 200 to the connecting member 2.

[0073] In this way, by providing the connection hole 21 on the connection member 2, a bolt can be inserted into the connection hole 21, so that the connection member 2 and the rotor assembly 200 can be connected together by bolts. Since the bolt connection is more reliable and less prone to failure, after the connection member 2 and the rotor assembly 200 are connected together by bolts, the connection between the two is more stable, thereby effectively ensuring that the generator can operate reliably and stably.

[0074] Of course, in other embodiments, the connecting member 2 may also be connected to the rotor assembly 200 by welding.

[0075] In order to further ensure the reliability of the connection between the connector 2 and the rotor assembly 200, Figure 4 In some embodiments, there are multiple connection holes 21 , and the multiple connection holes 21 are evenly spaced along the circumference of the shaft body 1 .

[0076] It is understandable that when there are multiple connecting holes 21, there are also multiple avoidance holes and multiple bolts on the rotor assembly 200. The multiple bolts are respectively inserted into the multiple connecting holes 21 and the multiple avoidance holes.

[0077] In this way, since the connecting member 2 has multiple connecting holes 21, and the multiple connecting holes 21 are evenly spaced along the circumference of the shaft body 1, the connecting member 2 and the rotor assembly 200 can be connected by multiple bolts, thereby making the connection between the connecting member 2 and the rotor assembly 200 more reliable and stable.

[0078] The connection hole 21 can be set as a threaded hole or a smooth hole, and the specific setting can be made according to the actual situation.

[0079] The number of the connection holes 21 can be specifically set according to actual needs. For example, the number of the connection holes 21 can be six.

[0080] In order to further ensure the reliability of the connection between the connector 2 and the rotor assembly 200, in some embodiments, as Figure 3 As shown, the shape of the connecting member 2 is an annular plate. The connecting member 2 is arranged perpendicular to the shaft body 1.

[0081] In this way, after the annular plate-shaped connecting member 2 is connected to the rotor assembly 200, the contact area between the connecting member 2 and the rotor assembly 200 is larger, so that the friction between the connecting member 2 and the rotor assembly 200 is larger, which effectively prevents the connecting member 2 and the rotor assembly 200 from separating, improves the firmness of the connection between the connecting member 2 and the rotor assembly 200, and further ensures the reliability of the connection between the connecting member 2 and the rotor assembly 200.

[0082] Of course, in other embodiments, the connecting member 2 may also be configured as a block. In this case, the shape of the connecting member 2 is relatively simple, and the manufacturing difficulty of the connecting member 2 is relatively low.

[0083] Continue to see Figure 3 In some embodiments, the connecting member 2 is integrally formed with the shaft body 1. At this time, the connection between the connecting member 2 and the shaft body 1 is relatively firm, and the two are not easily separated.

[0084] Of course, in other embodiments, the connecting member 2 and the shaft body 1 may also be connected together by welding. In this case, since the shaft body 1 and the connecting member 2 in the input shaft 100 are two separate structures, the shaft body 1 and the connecting member 2 may be processed and manufactured separately, thereby further reducing the difficulty of manufacturing the input shaft 100.

[0085] Continue to see Figure 3In some embodiments, the shaft body 1 may include a first shaft segment 13, a second shaft segment 14, a third shaft segment 15, a fourth shaft segment 16, a fifth shaft segment 17, and a sixth shaft segment 18, which are connected in sequence and have axes that coincide with each other. The cross sections of the first shaft segment 13, the second shaft segment 14, the third shaft segment 15, the fourth shaft segment 16, the fifth shaft segment 17, and the sixth shaft segment 18 are all circular, and the cross sections are perpendicular to the axis of the shaft body 1.

[0086] The first shaft section 13 can be used to connect the torque limiter, and the torque limiter can be used to be connected with the output shaft of the engine. Like this, the rotating speed and the torque of the output shaft of the engine can be transmitted to the first shaft section 13 by the torque limiter.

[0087] like Figure 5 As shown, Figure 5 for Figure 3 In the cross-sectional view at CC, the first shaft section 13 has an external spline 131 with 24 teeth on the outside, and the torque limiter (not shown in the figure) has an internal spline. The external spline 131 of the first shaft section 13 meshes with the internal spline of the torque limiter, so that the connection between the first shaft section 13 and the torque limiter is more reliable.

[0088] like Figure 3 As shown, the end surface of the first shaft section 13 away from the second shaft section 14 has an ejector hole 132. The ejector hole 132 can be used to center and fix the input shaft 100 when processing the input shaft 100. At the same time, the ejector hole 132 can also provide a position for fixing tooling during the assembly of the generator.

[0089] The shaft diameter of the second shaft segment 14 is smaller than the shaft diameter of the first shaft segment 13, and smaller than the shaft diameter of the third shaft segment 15. In order to meet the processing requirements of the external spline 131 and avoid stress concentration between the second shaft segment 14 and the first shaft segment 13 and the third shaft segment 15, as shown in FIG. Figure 6 As shown, Figure 6 This is one of the partial schematic diagrams of the input shaft 100 provided in an embodiment of the present application, in which the first shaft segment 13 and the second shaft segment 14 are smoothly connected by a fillet with a radius of 2 mm, and the second shaft segment 14 and the third shaft segment 15 are smoothly connected by a fillet with a radius of 1.5 mm.

[0090] The third shaft section 15 can be used for interference fit with an oil seal, which can seal the housing of the generator.

[0091] In order to facilitate the press-fitting of the oil seal on the third shaft section 15, see Figure 6 The end surface of the third shaft section 15 close to one end of the second shaft section 14 has a chamfer 151 with an angle of 20 degrees. The chamfer 151 can play a guiding role, thereby facilitating the press-fitting of the oil seal on the third shaft section 15.

[0092] Both ends of the chamfer 151 on the end surface of the third shaft section 15 close to one end of the second shaft section 14 are rounded with a radius of 0.5 mm, thereby effectively ensuring that the oil seal lip will not be scratched when the oil seal is press-fitted on the third shaft section 15 .

[0093] In order to ensure a tight fit between the third shaft segment 15 and the oil seal, the third shaft segment 15 is processed by vertical feed, which can prevent the lubricating oil in the generator housing from flowing out from the processed texture on the third shaft segment 15 .

[0094] like Figure 3 As shown, the shaft diameter of the fourth shaft segment 16 is smaller than the shaft diameter of the fifth shaft segment 17, and is the same as the shaft diameter of the third shaft segment 15. The shaft diameter of the sixth shaft segment 18 is smaller than the shaft diameter of the fifth shaft segment 17. The fourth shaft segment 16 and the sixth shaft segment 18 can both be used to install bearings and have an interference fit with the bearings. The bearings on the fourth shaft segment 16 and the sixth shaft segment 18 can be connected to the housing, thereby reducing the resistance encountered by the input shaft 100 when rotating at high speed.

[0095] In order to prevent the bearings installed on the fourth shaft section 16 and the sixth shaft section 18 from slipping, Figure 7 As shown, Figure 7 The second partial schematic diagram of the input shaft 100 provided in the embodiment of the present application, the fourth shaft segment 16 and the sixth shaft segment 18 ( Figure 3 ) is provided with a groove 161 on the outside. The groove 161 can be used to install the clamp ring.

[0096] It is understandable that the collar installed on the fourth shaft segment 16 can be located on the side of the bearing away from the fifth shaft segment 17, and the collar on the sixth shaft segment 18 can be located on the side of the bearing away from the fifth shaft segment 17. In this way, the collar can play a limiting role, thereby effectively preventing the bearings installed on the fourth shaft segment 16 and the sixth shaft segment 18 from slipping.

[0097] When processing the input shaft 100, since the corner area at the connection between the fourth shaft segment 16 and the fifth shaft segment 17 is easily not processed properly, in order to avoid the corner area at the connection between the fourth shaft segment 16 and the fifth shaft segment 17 from interfering with the bearing, continue to refer to Figure 7 The corner area at the connection between the fourth shaft segment 16 and the fifth shaft segment 17 has an avoidance groove 162 .

[0098] Similarly, the corner area at the connection between the sixth shaft segment 18 and the fifth shaft segment 17 also has an avoidance groove 162 .

[0099] like Figure 3 As shown, the fifth shaft segment 17 is used to pass through the rotor hub 202 ( Figure 1 ) of the rotating hole 201 ( Figure 1) and has an interference fit with the rotor hub 202. The discharge hole 12 is opened on the outside of the fifth shaft segment 17. The delivery channel 11 is formed inside the fifth shaft segment 17 and extends along the extension direction of the fifth shaft segment 17, passing through the end surface of the fifth shaft segment 17 close to one end of the sixth shaft segment 18. The connecting member 2 is located on the circumferential side of the fifth shaft segment 17 and is connected to the fifth shaft segment 17.

[0100] Continue to see Figure 3 An oil inlet hole 181 is provided on the end surface of the sixth shaft section 18 away from the fifth shaft section 17. The shape of the oil inlet hole 181 can be set to a square hole. The oil inlet hole 181 is connected to the delivery channel 11. The oil inlet hole 181 can be used to communicate with the oil pump. The cooling oil discharged by the oil pump can enter the delivery channel 11 through the oil inlet hole 181.

[0101] Continue to see Figure 3 The input shaft 100 may further include a first mounting member 3 and a second mounting member 4. The first mounting member 3 is located on the circumferential side of the fifth shaft segment 17, connected to the fifth shaft segment 17, and arranged around the circumference of the fifth shaft segment 17. Along the axial direction of the fifth shaft segment 17, the first mounting member 3 is spaced apart from the connecting member 2, and is located on the side of the connecting member 2 close to the sixth shaft segment 18. The second mounting member 4 is located on the side of the first mounting member 3 away from the connecting member 2, and is located on the circumferential side of the fifth shaft segment 17, connected to the first mounting member 3, and connected to the fifth shaft segment 17. The second mounting member 4 is arranged around the circumference of the fifth shaft segment 17.

[0102] like Figure 8 As shown, Figure 8 for Figure 1 A partial enlarged view shows that a step is formed between the first mounting member 3 and the second mounting member 4, and the outer surface of the first mounting member 3 is located at the outer surface of the second mounting member 4 away from the fifth shaft segment 17 ( Figure 3 The outer side of the second mounting member 4 can be used to sleeve the resolver rotor 300 of the resolver, and the resolver rotor 300 of the resolver is interference-fitted with the second mounting member 4.

[0103] In order to facilitate the press-fitting of the resolver rotor 300 of the resolver on the outside of the second mounting member 4, a guide angle 41 is formed on the end of the outer surface of the second mounting member 4 away from the first mounting member 3. The guide angle 41 can play a guiding role, thereby facilitating the press-fitting of the resolver rotor 300 of the resolver on the outside of the second mounting member 4.

[0104] The first mounting member 3 has a degassing groove 31 on its surface near the second mounting member 4, and the degassing groove 31 is located at the corner of the step between the first mounting member 3 and the second mounting member 4. In this way, the degassing groove 31 can not only avoid the resolver rotor 300 of the resolver, but also ensure that the resolver rotor 300 of the resolver has a sufficient contact area with the second mounting member 4, thereby ensuring the connection firmness between the resolver rotor 300 of the resolver and the second mounting member 4.

[0105] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present application is within the protection scope of the present application.

Claims

1. An input shaft, characterized in that: include: A shaft body, the shaft body being used for sleeve-mounting the rotor assembly; as well as, A connecting member, located on the peripheral side of the shaft body and connected to the shaft body; The connecting member is used to connect with the rotor assembly; The connecting member is provided with a connecting hole; the connecting hole is used for a bolt to pass through, so that the connecting member and the rotor assembly are connected through the bolt.

2. The input shaft according to claim 1, characterized in that: There are multiple connection holes, and the multiple connection holes are evenly spaced along the circumference of the shaft body.

3. The input shaft according to claim 1, characterized in that: The connecting piece is in the shape of an annular plate; the connecting piece is arranged perpendicular to the shaft body.

4. The input shaft according to claim 1, characterized in that The connecting piece and the shaft body are integrally formed.

5. The input shaft according to any one of claims 1 to 4, characterized in that: A conveying channel is formed inside the shaft body; one end of the conveying channel is communicated with the outside of the shaft body; a discharge hole is opened on the circumference of the shaft body, and the discharge hole is communicated with the other end of the conveying channel.

6. The input shaft according to claim 5, characterized in that There are multiple discharge holes, and the multiple discharge holes are evenly spaced along the circumference of the shaft.

7. A generator, characterized in that: include: A housing having an installation cavity formed therein; A stator is located in the installation cavity and connected to the housing; the stator is annular and has a placement space enclosed therein; The input shaft according to any one of claims 1 to 6, wherein the shaft body is located in the placement space and is rotatably connected to the housing; the extension direction of the shaft body is the same as the extension direction of the stator; and, The rotor assembly is located in the placement space; a rotation hole is opened on the rotor assembly, the shaft body is passed through the rotation hole, and the connecting piece is connected to the rotor assembly; the rotor assembly is used to generate a magnetic field.

8. The generator according to claim 7, characterized in that: The rotor assembly comprises: A rotor hub is provided with the rotating hole; the rotor hub is connected to the connecting member; and, A rotor core, the rotor core is annular; along the circumference of the rotating hole, the rotor core is arranged around the rotor hub; the rotor core is used to generate a magnetic field; Wherein, the rotor hub comprises: The support portion is provided with the rotation hole; the support portion is connected to the connecting member; and, A connecting portion, along the circumference of the rotating hole, the connecting portion is arranged around the supporting portion, and the rotor core is arranged around the connecting portion; Along the axial direction of the rotating hole, the thickness of the supporting portion is smaller than the thickness of the connecting portion.

9. A vehicle, characterized in that: include: an engine having an output shaft; as well as, In the generator according to any one of claims 7 to 8, the shaft body is connected to the output shaft.

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