A distributed drive integrated wheel hub bearing unit for new energy vehicles

Abstract

The present invention relates to the technical field of integrated wheel hub bearing units, and specifically to an integrated wheel hub bearing unit for distributed drive new energy vehicles. It solves the problem that when the ABS sensor inside the integrated wheel hub bearing unit fails, the integrated wheel hub bearing unit is inconvenient to disassemble, which is not conducive to the maintenance, inspection or replacement of the ABS sensor. An integrated wheel hub bearing unit for distributed drive new energy vehicles includes a wheel hub connecting sleeve and a wheel hub bearing bracket connecting sleeve, a wheel hub bearing unit body is installed between the wheel hub connecting sleeve and the wheel hub bearing bracket connecting sleeve, one end of the wheel hub connecting sleeve and one end of the wheel hub bearing bracket connecting sleeve are fixed with connecting flanges, and assembly connection holes are penetrated at the four end corners of the connecting flange. The present invention can quickly disassemble the integrated wheel hub bearing unit and remove the internal ABS sensor, which is convenient for the maintenance, inspection or replacement of the ABS sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated wheel hub bearing units, and in particular to an integrated wheel hub bearing unit for a distributed drive new energy vehicle. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source (or use conventional automotive fuels with new onboard power units), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0003] The wheel hub bearing is one of the key components of a car. Its main function is to bear weight and provide precise guidance for the rotation of the wheel hub. This requires it to be able to withstand not only axial loads but also radial loads. The wheel hub bearing is used in the wheels of new energy vehicles and ordinary cars. Integrated wheel hub bearings include driven and distributed drive types. Among them, the distributed drive integrated wheel hub bearing is a design that directly integrates the drive motor into the wheel hub, eliminating intermediate transmission components such as the drive shaft and differential, and realizing direct drive between the motor and the wheel.

[0004] However, when the ABS sensor inside the integrated hub bearing unit fails, it is inconvenient to disassemble the integrated hub bearing unit, which is not conducive to the maintenance, inspection or replacement of the ABS sensor; therefore, it does not meet the existing needs. In this regard, we propose an integrated hub bearing unit for distributed drive new energy vehicles. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated wheel hub bearing unit for a distributed drive new energy vehicle, so as to solve the problem proposed in the above background technology that when the ABS sensor inside the integrated wheel hub bearing unit fails, the integrated wheel hub bearing unit is inconvenient to disassemble, which is not conducive to the maintenance, inspection or replacement of the ABS sensor.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an integrated wheel hub bearing unit for a distributed drive new energy vehicle, comprising a wheel hub connecting sleeve and a wheel hub bearing bracket connecting sleeve, a wheel hub bearing unit body being mounted between the wheel hub connecting sleeve and the wheel hub bearing bracket connecting sleeve, a connecting flange being fixed to one end of the wheel hub connecting sleeve and one end of the wheel hub bearing bracket connecting sleeve, and assembly connection holes being penetrated at the four end corners of the connecting flange;

[0007] The hub bearing unit body includes a bearing outer ring and a bearing inner ring. The bearing outer ring is located outside the end of the hub connecting sleeve, and the bearing inner ring is located outside the end of the hub bearing bracket connecting sleeve. A first sealing end ring and a second sealing end ring are slidably installed between the bearing outer ring and the bearing inner ring. A first limiting ring is fixed on the inner side of the bearing outer ring, and a second limiting ring is fixed on the outer surface of the bearing inner ring. Both sides of the first limiting ring are provided with a plurality of first roller retaining grooves distributed in a circular array around the center of the bearing outer ring. Both sides of the second limiting ring are provided with a plurality of second roller retaining grooves distributed in a circular array around the center of the bearing inner ring. A plurality of first bearing rollers and second bearing rollers are provided between the first and second sealing end rings and the bearing outer ring and the bearing inner ring. The first bearing rollers are clamped inside the first roller retaining grooves, and the second bearing rollers are clamped inside the second roller retaining grooves. The end surfaces of the first and second sealing end rings that are in contact with the bearing outer ring and the bearing inner ring are both provided with sealing ring grooves, and sealing rings are clamped inside the sealing ring grooves.

[0008] Preferably, a mounting hole is provided through the interior of the first sealing end ring, an ABS sensor is installed inside the mounting hole, the ABS sensor includes an external transmission harness, a sealing connection terminal is fixed to one end of the external transmission harness, the sealing connection terminal is located inside the mounting hole, and a sensor connection line is detachably installed on the end of the sealing connection terminal located inside the mounting hole, one end of the sensor connection line extends through the mounting hole to between the first sealing end ring and the second sealing end ring, a sensor body is fixed to this end of the sensor connection line, and the sensor body is in contact with the first sealing end ring and the second sealing end ring.

[0009] Preferably, the end portion of the sensor connecting wire connected to the sealed connecting terminal is spiral-shaped, and the length of the sensor connecting wire is greater than the length of the mounting hole.

[0010] Preferably, the outer surface of the first sealing end ring is penetrated by a plurality of first splicing holes, and the outer surface of the second sealing end ring is penetrated by a plurality of second splicing holes, the first splicing holes and the second splicing holes are distributed in a circular array around the axis of the first sealing end ring and the second sealing end ring, and the number of the first splicing holes and the second splicing holes are the same and correspond one to one.

[0011] Preferably, a sealing connector is installed inside the first splicing hole and the second splicing hole whose axes coincide with each other, and the first sealing end ring and the second sealing end ring are connected and fixed by the sealing connector.

[0012] Preferably, the sealing connection member includes a fixed connection sleeve and a fixed connection screw, the fixed connection sleeve is inserted into the inner side of the first splicing hole, the fixed connection screw is inserted into the inner side of the second splicing hole, and the end of the fixed connection sleeve facing the fixed connection screw is provided with a connecting threaded hole, one end of the fixed connection screw is inserted into the inner side of the connecting threaded hole and is threadedly connected to the fixed connection sleeve.

[0013] Preferably, the outer surface of the large end of the fixed connecting sleeve is provided with a first sealing groove, and a first sealing gasket is clamped on the inner side of the first sealing groove. The outer surface of the large end of the fixed connecting screw is provided with a second sealing groove, and a second sealing gasket is clamped on the inner side of the second sealing groove.

[0014] Preferably, a lubricating oil filling structure is also installed on the outer surface of the first sealing end ring, and the lubricating oil filling structure includes a filling hole. The filling hole does not pass through the first sealing end ring, and the inner surface of the filling hole is provided with two filling connecting holes, one end of the filling connecting hole passes through the first sealing end ring.

[0015] Preferably, a sliding sealing sleeve is slidably installed on the inner side of the filling hole, and an addition docking hole is provided on the inner side of the sliding sealing sleeve. Two addition liquid grooves are provided on the inner surface of the addition docking hole. The addition liquid grooves pass through the sliding sealing sleeve shell and correspond to the position of the filling connecting hole. A sealing spring is fixed between the sliding sealing sleeve and the inner end face of the filling hole.

[0016] Preferably, positioning guide surfaces are provided on the outer side and the inner side of the ends of the first sealing end ring and the second sealing end ring located between the bearing outer ring and the bearing inner ring, and the inclination angle of the positioning guide surfaces is five degrees.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the sensor body of the present invention fails or is damaged during use and needs to be replaced, or when the first bearing roller and the second bearing roller are damaged and need to be replaced, it is only necessary to remove the hub connecting sleeve and the hub bearing bracket connecting sleeve from the connecting part, and then separate the fixed connecting sleeve and the fixed connecting screw to separate the first sealing end ring from the second sealing end ring. After the first sealing end ring and the second sealing end ring are separated, the first sealing end ring and the second sealing end ring can be pulled to separate the first sealing end ring and the second sealing end ring from the bearing outer ring and the bearing inner ring, thereby exposing the sensor body, the first bearing roller and the second bearing roller. At this time, the sensor body, the first bearing roller and the second bearing roller can be directly replaced, which facilitates the inspection, maintenance or replacement of the sensor body, reduces the difficulty of operation and improves the maintenance and repair efficiency of the integrated hub bearing unit;

[0019] 2. The present invention squeezes the sliding sealing sleeve into the filling hole, thereby connecting the addition liquid tank with the filling connecting hole. At this time, lubricant can be added between the first sealing end ring, the bearing outer ring, and the bearing inner ring through the addition docking hole, the addition liquid tank, and the filling connecting hole. Lubricant can be added without disassembling the integrated hub bearing unit, ensuring that the integrated hub bearing unit has sufficient lubrication.

[0020] 3. The present invention connects the sensor body to the first sealing end ring through the sensor connecting wire and the sealing connecting terminal, and provides a first bearing roller and a second bearing roller between the first sealing end ring and the bearing outer ring and the bearing inner ring respectively, so as to ensure that when the bearing outer ring or the bearing inner ring rotates, the first sealing end ring and the second sealing end ring remain relatively stationary, thereby ensuring that the external transmission harness will not rotate simultaneously due to the operation of the integrated hub bearing unit, and avoiding the external transmission harness from being entangled or pulled and broken due to rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 It is a structural schematic diagram of the main body of the hub bearing unit of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the bearing outer ring and the bearing inner ring of the present invention;

[0024] Figure 4 A cross-sectional view of the structure of the bearing outer ring and the bearing inner ring of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the second sealing end ring of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the first sealing end ring of the present invention;

[0027] Figure 7 This is a schematic diagram of the connection between the first sealing end ring and the second sealing end ring of the present invention;

[0028] Figure 8 Schematic diagram of the structure of the sealing connector of the present invention;

[0029] Figure 9 Schematic diagram of the structure of the ABS sensor of the present invention;

[0030] Figure 10 It is a structural schematic diagram of the lubricating oil filling structure of the present invention.

[0031] In the figure: 1. Hub connecting sleeve; 2. Hub bearing bracket connecting sleeve; 3. Connecting flange; 4. Assembly connecting hole; 5. Hub bearing unit body; 501. Bearing outer ring; 502. Bearing inner ring; 503. First sealing end ring; 504. Second sealing end ring; 505. ABS sensor; 5051. External transmission wiring harness; 5052. Sealing connection terminal; 5053. Sensor connection line; 5054. Sensor body; 506. First splicing hole; 507. Lubricating oil filling structure; 5071. Filling hole; 5072. Sliding sealing sleeve; 5073. Adding liquid tank; 5074. Sealing spring; 5075. Filling connecting hole; 5076, adding docking hole; 508, first roller slot; 509, second roller slot; 510, first limiting ring; 511, second limiting ring; 512, sealing connection; 5121, fixed connection sleeve; 5122, fixed connection screw; 5123, connecting threaded hole; 5124, first sealing groove; 5125, first sealing gasket; 5126, second sealing groove; 5127, second sealing gasket; 513, sealing ring groove; 514, sealing ring; 515, first bearing roller; 516, second bearing roller; 517, second splicing hole; 518, positioning guide surface; 519, mounting hole. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] like Figure 1 As shown, an integrated hub bearing unit for a distributed drive new energy vehicle includes a hub connecting sleeve 1 and a hub bearing bracket connecting sleeve 2, a hub bearing unit body 5 is installed between the hub connecting sleeve 1 and the hub bearing bracket connecting sleeve 2, one end of the hub connecting sleeve 1 and one end of the hub bearing bracket connecting sleeve 2 are fixed with connecting flanges 3, and assembly connecting holes 4 are penetrated at the four end corners of the connecting flange 3.

[0034] like Figures 1 to 6As shown, the hub bearing unit body 5 includes a bearing outer ring 501 and a bearing inner ring 502. The bearing outer ring 501 is located outside the end of the hub connecting sleeve 1, and the bearing inner ring 502 is located outside the end of the hub bearing bracket connecting sleeve 2. A first sealing end ring 503 and a second sealing end ring 504 are slidably installed between the bearing outer ring 501 and the bearing inner ring 502. A first limiting ring 510 is fixed on the inner side of the bearing outer ring 501, and a second limiting ring 511 is fixed on the outer surface of the bearing inner ring 502. Both sides of the first limiting ring 510 are provided with a plurality of first roller retaining grooves 508 distributed in a circular array around the center of the bearing outer ring 501, and both sides of the second limiting ring 511 are provided with a plurality of second roller retaining grooves 509 distributed in a circular array around the center of the bearing inner ring 502. A plurality of first bearing rollers 515 and a second bearing roller 516 are provided between the first sealing end ring 503, the second sealing end ring 504 and the bearing outer ring 501 and the bearing inner ring 502. Two bearing rollers 516, the first bearing roller 515 is clamped on the inner side of the first roller clamping groove 508, and the second bearing roller 516 is clamped on the inner side of the second roller clamping groove 509. The end faces of the first sealing end ring 503 and the second sealing end ring 504 that are in contact with the bearing outer ring 501 and the bearing inner ring 502 are both provided with sealing ring grooves 513, and the inner side of the sealing ring grooves 513 is clamped with a sealing ring 514. The first sealing end ring 503 and the second sealing end ring 504 are used to limit the position of the first bearing roller 515 and the second bearing roller 516, and the first bearing roller 515, the second bearing roller 516, the first sealing end ring 503 and the second sealing end ring 504 are used to connect and drive the bearing outer ring 501 and the bearing inner ring 502, ensuring that the first sealing end ring 503 and the second sealing end ring 504 are relatively stationary during the process in which the hub connecting sleeve 1 drives the bearing outer ring 501 to rotate and the hub bearing bracket connecting sleeve 2 drives the bearing inner ring 502 to rotate.

[0035] The first sealing end ring 503 and the second sealing end ring 504 are both provided with positioning guide surfaces 518 on the outer and inner sides of the ends thereof located between the bearing outer ring 501 and the bearing inner ring 502. The inclination angle of the positioning guide surfaces 518 is five degrees. When the first sealing end ring 503 and the second sealing end ring 504 are inserted between the bearing outer ring 501 and the bearing inner ring 502, the positioning guide surfaces 518 provided at the ends thereof can contact the first bearing roller 515 and the second bearing roller 516 and push the first bearing roller 515 and the second bearing roller 516 to move, so that the first bearing roller 515 and the second bearing roller 516 drive the bearing outer ring 501 and the bearing inner ring 502 to move, thereby realizing the center positioning of the bearing outer ring 501 and the bearing inner ring 502.

[0036] The outer surface of the first sealing end ring 503 is penetrated by a plurality of first splicing holes 506, and the outer surface of the second sealing end ring 504 is penetrated by a plurality of second splicing holes 517. The first splicing holes 506 and the second splicing holes 517 are distributed in a circular array around the axis of the first sealing end ring 503 and the second sealing end ring 504, and the number of the first splicing holes 506 and the second splicing holes 517 are the same and correspond one to one. The inner side of the first splicing holes 506 and the second splicing holes 517 with the same axis is installed with a sealing connector 512. The first sealing end ring 503 and the second sealing end ring 504 are connected to each other. The ring 504 is connected and fixed by a sealing connector 512, and the first sealing end ring 503 and the second sealing end ring 504 are installed on the ends of the bearing outer ring 501 and the bearing inner ring 502 through the sealing connector 512 to achieve the overall sealing of the integrated hub bearing unit. After the sealing connector 512 is removed from the inside of the first sealing end ring 503 and the second sealing end ring 504, the first sealing end ring 503 and the second sealing end ring 504 can be separated from the bearing outer ring 501 and the bearing inner ring 502, and the entire integrated hub bearing unit can be disassembled.

[0037] like Figure 7 and Figure 8 As shown, the sealing connection member 512 includes a fixed connection sleeve 5121 and a fixed connection screw 5122. The fixed connection sleeve 5121 is inserted into the inner side of the first splicing hole 506, and the fixed connection screw 5122 is inserted into the inner side of the second splicing hole 517. The fixed connection sleeve 5121 is provided with a connecting threaded hole 5123 at the end facing the fixed connection screw 5122. One end of the fixed connection screw 5122 is inserted into the inner side of the connecting threaded hole 5123 and is connected to the fixed connection sleeve 5121 through a thread. The outer surface of the large end of the fixed connection sleeve 5121 is provided with a first sealing groove 5124. The inner side of the first sealing groove 5124 is clamped with a first sealing gasket 5125. A second sealing groove 5126 is provided on the outer surface of the large end of the screw 5122, and a second sealing gasket 5127 is clamped on the inner side of the second sealing groove 5126. The fixed connecting sleeve 5121 and the fixed connecting screw 5122 are connected and locked by threads, and the fixed connecting sleeve 5121 and the fixed connecting screw 5122 are ensured to tighten the first sealing end ring 503 and the second sealing end ring 504, and the gaps between the fixed connecting sleeve 5121 and the first sealing end ring 503, and the gaps between the fixed connecting screw 5122 and the second sealing end ring 504 are filled by the first sealing gasket 5125 and the second sealing gasket 5127 to ensure the internal sealing of the integrated hub bearing unit.

[0038] like Figure 9As shown, the interior of the first sealing end ring 503 is penetrated by a mounting hole 519, and an ABS sensor 505 is mounted inside the mounting hole 519. The ABS sensor 505 includes an external transmission harness 5051, and a sealing connection terminal 5052 is fixed at one end of the external transmission harness 5051. The sealing connection terminal 5052 is located inside the mounting hole 519, and the sealing connection terminal 5052 is located inside the mounting hole 519. The inner end is detachably mounted with a sensor connecting wire 5053, one end of the sensor connecting wire 5053 passes through the mounting hole 519 and extends between the first sealing end ring 503 and the second sealing end ring 504, a sensor body 5054 is fixed to this end of the sensor connecting wire 5053, the sensor body 5054 is in contact with the first sealing end ring 503 and the second sealing end ring 504, the sensor body 5054 is mounted between the first sealing end ring 503 and the second sealing end ring 504, to ensure that the sensor body 5054 is relatively stationary during the operation of the integrated hub bearing unit, and the external transmission harness 5051 does not rotate due to the operation of the integrated hub bearing unit, thereby preventing the external transmission harness 5051 from being entangled or pulled and broken due to rotation.

[0039] The end portion of the sensor connecting wire 5053 connected to the sealed connecting terminal 5052 is spiral-shaped, and the length of the sensor connecting wire 5053 is greater than the length of the mounting hole 519, ensuring that when the sealed connecting terminal 5052 is separated from the inside of the mounting hole 519, the end portion of the sensor connecting wire 5053 can be pulled out synchronously without pulling the sensor body 5054.

[0040] like Figure 10As shown, the outer surface of the first sealing end ring 503 is further provided with a lubricating oil filling structure 507, which includes a filling hole 5071. The filling hole 5071 does not penetrate the first sealing end ring 503. The inner surface of the filling hole 5071 is provided with two filling connecting holes 5075. One end of the filling connecting hole 5075 penetrates the first sealing end ring 503. A sliding sealing sleeve 5072 is slidably installed on the inner side of the filling hole 5071. The inner side of the sliding sealing sleeve 5072 is provided with a filling docking hole 5076. The inner surface of the filling docking hole 5076 is provided with two adding liquid grooves 5073. The adding liquid grooves 5073 penetrate the sliding sealing sleeve 5072. The shell corresponds to the position of the filling connecting hole 5075, and a sealing spring 5074 is fixed between the sliding sealing sleeve 5072 and the inner end face of the filling hole 5071. After the sliding sealing sleeve 5072 is squeezed into the filling hole 5071, the addition liquid tank 5073 is connected with the filling connecting hole 5075. At this time, lubricant can be added between the first sealing end ring 503, the bearing outer ring 501, and the bearing inner ring 502 through the addition docking hole 5076, the addition liquid tank 5073 and the filling connecting hole 5075. The addition of lubricant is completed without disassembling the integrated hub bearing unit, thereby ensuring that the integrated hub bearing unit has sufficient lubrication.

[0041] Working principle: When assembling the integrated hub bearing unit, first place the bearing outer ring 501 on the table, then place the bearing inner ring 502 inside the bearing outer ring 501, and clamp the first bearing roller 515 into the inside of the first roller clamping groove 508, and clamp the second bearing roller 516 into the inside of the second roller clamping groove 509, and then insert the end of the second sealing end ring 504 with the positioning guide surface 518 between the bearing outer ring 501 and the bearing inner ring 502. When the second sealing end ring 504 is inserted, the positioning guide surface 518 is aligned with the first bearing. The roller 515 and the second bearing roller 516 come into contact. At this time, the first bearing roller 515 and the second bearing roller 516 are squeezed and enter the first roller groove 508 and the second roller groove 509, pushing the bearing outer ring 501 and the bearing inner ring 502 to move on the table until the second sealing end ring 504 contacts all the first bearing rollers 515 and the second bearing rollers 516. At this time, the centers of the hub connecting sleeve 1 and the hub bearing bracket connecting sleeve 2 coincide, and the fixing screw 5122 is inserted into the inner side of the second splicing hole 517;

[0042] At this time, the bearing outer ring 501, the bearing inner ring 502, and the second sealing end ring 504 are turned over so that the second sealing end ring 504 contacts the desktop, and one end of the sensor connecting wire 5053 is passed through the mounting hole 519 to connect with the sensor main body 5054. Subsequently, the other end of the sensor connecting wire 5053 is assembled with the sealing connection terminal 5052, and the sensor connecting wire 5053 is received into the mounting hole 519. The end of the mounting hole 519 is sealed with the sealing connection terminal 5052, and finally, the external transmission harness 5051 is connected to the sealing connection terminal 5052. At this time, the first sealing end ring 503 is inserted between the bearing outer ring 501 and the bearing inner ring 502 until the first sealing end ring 503 contacts the bearing outer ring 501 and the bearing inner ring 502. At this time, the sensor main body 5054 is sandwiched between the first sealing end ring 503 and the second sealing end ring 504.

[0043] Next, insert the fixed connecting sleeve 5121 into the first splicing hole 506 so that the connecting threaded hole 5123 at the end of the fixed connecting sleeve 5121 contacts the end of the fixing connecting screw 5122. Stand the bearing outer ring 501, the bearing inner ring 502, the first sealing end ring 503, and the second sealing end ring 504 upright and perpendicular to the table. Use a tool to tighten the fixed connecting sleeve 5121 and the fixing connecting screw 5122 so that the end of the fixing connecting screw 5122 enters the inner side of the connecting threaded hole 5123. At this time, the fixed connecting sleeve 5121 and the fixing connecting screw 5122 approach each other and enter the inner sides of the first splicing hole 506 and the second splicing hole 517 until the large ends of the fixed connecting sleeve 5121 and the fixing connecting screw 5122 contact the inner end surfaces of the first splicing hole 506 and the second splicing hole 517 respectively. The assembly of the integrated hub bearing unit is completed. Then, assemble the hub connecting sleeve 1, the hub bearing bracket connecting sleeve 2 and the hub bearing unit body 5.

[0044] When the sensor body 5054 fails or is damaged during use and needs to be replaced, or when the first bearing roller 515 and the second bearing roller 516 are damaged and need to be replaced, it is only necessary to remove the hub connecting sleeve 1 and the hub bearing bracket connecting sleeve 2 from the connecting part, and then separate the fixed connecting sleeve 5121 and the fixed connecting screw 5122 to separate the first sealing end ring 503 from the second sealing end ring 504. After the first sealing end ring 503 and the second sealing end ring 504 are separated, the first sealing end ring 503 and the second sealing end ring 504 are replaced. By pulling the two sealing end rings 504, the first sealing end ring 503 and the second sealing end ring 504 can be separated from the bearing outer ring 501 and the bearing inner ring 502, exposing the sensor body 5054, the first bearing roller 515 and the second bearing roller 516. At this time, the sensor body 5054, the first bearing roller 515 and the second bearing roller 516 can be directly replaced, which facilitates the inspection, maintenance or replacement of the sensor body 5054, reduces the difficulty of operation and improves the maintenance and repair efficiency of the integrated hub bearing unit.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An integrated wheel hub bearing unit for a distributed drive new energy vehicle, comprising a wheel hub connecting sleeve (1) and a wheel hub bearing bracket connecting sleeve (2), characterized in that: A hub bearing unit body (5) is installed between the hub connecting sleeve (1) and the hub bearing bracket connecting sleeve (2), and a connecting flange (3) is fixed to one end of the hub connecting sleeve (1) and one end of the hub bearing bracket connecting sleeve (2), and assembly connection holes (4) are provided through the four end corners of the connecting flange (3); The hub bearing unit body (5) comprises a bearing outer ring (501) and a bearing inner ring (502), wherein the bearing outer ring (501) is located outside the end of the hub connecting sleeve (1), and the bearing inner ring (502) is located outside the end of the hub bearing bracket connecting sleeve (2), and a first sealing end ring (503) and a second sealing end ring (504) are slidably mounted between the bearing outer ring (501) and the bearing inner ring (502), a first limiting ring (510) is fixed on the inner side of the bearing outer ring (501), and a second limiting ring (511) is fixed on the outer surface of the bearing inner ring (502), and a plurality of first roller slots (508) are provided on both sides of the first limiting ring (510) and are distributed in a circular array around the center of the bearing outer ring (501), and the second limiting ring (511) is fixed on the outer side of the bearing inner ring (502). 11) are provided with a plurality of second roller retaining grooves (509) distributed in a circular array around the center of the bearing inner ring (502) on both sides, a plurality of first bearing rollers (515) and second bearing rollers (516) are provided between the first sealing end ring (503), the second sealing end ring (504) and the bearing outer ring (501), and the bearing inner ring (502), the first bearing rollers (515) are clamped on the inner side of the first roller retaining groove (508), and the second bearing rollers (516) are clamped on the inner side of the second roller retaining groove (509), and the end faces of the first sealing end ring (503) and the second sealing end ring (504) that are in contact with the bearing outer ring (501) and the bearing inner ring (502) are provided with sealing ring grooves (513), and the inner side of the sealing ring grooves (513) is clamped with a sealing ring (514); The outer surface of the first sealing end ring (503) is further provided with a lubricating oil filling structure (507), the lubricating oil filling structure (507) comprising a filling hole (5071), the filling hole (5071) not penetrating the first sealing end ring (503), and the inner surface of the filling hole (5071) is provided with two filling connecting holes (5075), one end of the filling connecting hole (5075) penetrating the first sealing end ring (503); A sliding sealing sleeve (5072) is slidably mounted on the inner side of the filling hole (5071), an addition docking hole (5076) is provided on the inner side of the sliding sealing sleeve (5072), two addition liquid grooves (5073) are provided on the inner surface of the addition docking hole (5076), the addition liquid grooves (5073) pass through the housing of the sliding sealing sleeve (5072) and correspond to the positions of the filling connecting hole (5075), and a sealing spring (5074) is fixed between the sliding sealing sleeve (5072) and the inner end surface of the filling hole (5071); The outer surface of the first sealing end ring (503) is penetrated by a plurality of first splicing holes (506), and the outer surface of the second sealing end ring (504) is penetrated by a plurality of second splicing holes (517), the first splicing holes (506) and the second splicing holes (517) are distributed in a circular array around the axis of the first sealing end ring (503) and the second sealing end ring (504), and the number of the first splicing holes (506) and the second splicing holes (517) are the same and correspond one to one; A sealing connector (512) is installed inside the first splicing hole (506) and the second splicing hole (517) whose axes coincide with each other, and the first sealing end ring (503) and the second sealing end ring (504) are connected and fixed via the sealing connector (512); The sealing connection member (512) comprises a fixed connection sleeve (5121) and a fixed connection screw (5122), wherein the fixed connection sleeve (5121) is inserted into the inner side of the first splicing hole (506), and the fixed connection screw (5122) is inserted into the inner side of the second splicing hole (517), and a connection threaded hole (5123) is provided at the end of the fixed connection sleeve (5121) facing the fixed connection screw (5122), and one end of the fixed connection screw (5122) is inserted into the inner side of the connection threaded hole (5123) and is threadedly connected to the fixed connection sleeve (5121); The outer surface of the large end of the fixed connection sleeve (5121) is provided with a first sealing groove (5124), and the inner side of the first sealing groove (5124) is clamped with a first sealing gasket (5125). The outer surface of the large end of the fixed connection screw (5122) is provided with a second sealing groove (5126), and the inner side of the second sealing groove (5126) is clamped with a second sealing gasket (5127).

2. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 1, characterized in that: The first sealing end ring (503) is provided with a mounting hole (519) extending through the interior thereof, an ABS sensor (505) is mounted inside the mounting hole (519), the ABS sensor (505) comprises an external transmission harness (5051), one end of the external transmission harness (5051) is fixed with a sealing connection terminal (5052), the sealing connection terminal (5052) is located inside the mounting hole (519), and the end of the sealing connection terminal (5052) located inside the mounting hole (519) is detachably mounted with a sensor connection line (5053), one end of the sensor connection line (5053) passes through the mounting hole (519) and extends between the first sealing end ring (503) and the second sealing end ring (504), a sensor body (5054) is fixed to this end of the sensor connection line (5053), and the sensor body (5054) is in contact with the first sealing end ring (503) and the second sealing end ring (504).

3. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 2, characterized in that: The end portion of the sensor connecting wire (5053) connected to the sealed connecting terminal (5052) is spiral-shaped, and the length of the sensor connecting wire (5053) is greater than the length of the mounting hole (519).

4. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 1, characterized in that: Positioning guide surfaces (518) are provided on the outer and inner sides of the ends of the first sealing end ring (503) and the second sealing end ring (504) located between the bearing outer ring (501) and the bearing inner ring (502), and the inclination angle of the positioning guide surface (518) is five degrees.

Images