CN116946082A - Hub assembly and vehicle - Google Patents

Hub assembly and vehicle Download PDF

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Publication number
CN116946082A
CN116946082A CN202311028538.9A CN202311028538A CN116946082A CN 116946082 A CN116946082 A CN 116946082A CN 202311028538 A CN202311028538 A CN 202311028538A CN 116946082 A CN116946082 A CN 116946082A
Authority
CN
China
Prior art keywords
cavity
outlet
inlet
channel
brake disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311028538.9A
Other languages
Chinese (zh)
Inventor
杨传良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Zeekr Intelligent Technology Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Zeekr Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Zeekr Intelligent Technology Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN202311028538.9A priority Critical patent/CN116946082A/en
Publication of CN116946082A publication Critical patent/CN116946082A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses a hub assembly and a vehicle. The hub assembly comprises a hub motor and a brake disc assembly, wherein a first cavity is formed in the hub motor; the brake disc assembly is internally provided with a second cavity and a cooling flow passage which is communicated with the second cavity and the first cavity, and the cooling flow passage is suitable for guiding cooling liquid in the first cavity to the second cavity so as to dissipate heat of at least part of the brake disc assembly. According to the hub assembly, the first cavity of the hub motor is communicated with the second cavity of the brake disc assembly through the cooling flow passage arranged in the brake disc assembly, and the heat dissipation effect of the brake disc assembly is improved through the recycling of cooling liquid, so that the braking performance of the brake disc assembly is ensured, and the safety of the hub assembly is improved.

Description

Hub assembly and vehicle
Technical Field
The invention relates to the field of vehicles, in particular to a hub assembly and a vehicle.
Background
The brake disc of the vehicle is a key structure for providing braking force for the vehicle, the braking performance of the vehicle can be influenced by the heat dissipation effect of the brake disc, in the prior art, the heat dissipation of the brake disc is usually realized in an air cooling mode, but after the hub motor is mounted at the wheel end of the vehicle, the heat dissipation effect of the brake disc can be influenced by the heat of the motor, the braking performance of the vehicle can be influenced by the fact that the heat dissipation of the brake disc is not timely, and potential safety hazards are brought to the vehicle.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose a hub assembly. According to the hub assembly, the first cavity of the hub motor is communicated with the second cavity of the brake disc assembly through the cooling flow passage arranged in the brake disc assembly, and the heat dissipation effect of the brake disc assembly is improved through the recycling of cooling liquid, so that the braking performance of the brake disc assembly is ensured, and the safety of the hub assembly is improved.
The invention further provides a vehicle comprising the hub assembly.
The hub assembly comprises a hub motor and a brake disc assembly, wherein a first cavity is formed in the hub motor; the brake disc assembly is internally provided with a second cavity and a cooling flow passage which is communicated with the second cavity and the first cavity, and the cooling flow passage is suitable for guiding cooling liquid in the first cavity to the second cavity so as to dissipate heat of at least part of the brake disc assembly.
The hub assembly is provided with the first cavity in the hub motor, and the first cavity can contain cooling liquid. Simultaneously, the wheel hub assembly has still set up the second cavity in the brake disc subassembly and has communicated second cavity and first cavity through the structure cooling runner, in the cooling runner can be with the coolant liquid drainage in the first cavity to the second cavity, specifically, when wheel hub assembly during operation, the drive structure in the wheel hub motor can drive coolant liquid and flow to the cooling runner, the coolant liquid can reach the second cavity and absorb the heat of brake disc subassembly under the drainage effect of cooling runner, the coolant liquid after the heat absorption can return the first cavity through the cooling runner again in order to realize the cyclic utilization of coolant liquid. The driving structure may be understood as a structure such as an oil pump for driving the cooling liquid, and it is noted that a route of the cooling liquid flowing to the second cavity and a route of the cooling liquid flowing back to the first cavity are different, and the route design of the cooling liquid realizes recycling of the cooling liquid, so that the cost can be reduced. The first cavity, the second cavity and the cooling flow channel form a circulation loop of cooling liquid, the cooling liquid flows in the circulation loop and can take away heat transferred to the second cavity by the brake disc assembly, and the hub assembly performs heat exchange in the second cavity through the cooling liquid so as to realize heat dissipation of the brake disc assembly.
According to one embodiment of the invention, the brake disc assembly comprises a brake disc body and a transmission mechanism, wherein the brake disc body is connected with the hub motor, a second cavity is formed on the brake disc body, and the second cavity is arranged in the brake disc body around the circle center of the brake disc body; the transmission mechanism is arranged on one side, deviating from the hub motor, of the brake disc body, a cooling flow passage is formed in the transmission mechanism, and two ends of the cooling flow passage are respectively communicated with the first cavity and the second cavity.
According to one embodiment of the present invention, the transmission mechanism includes a rotary shaft and a sleeve, one end of the rotary shaft is connected with the brake disc body, a housing cavity which is open in the axial direction is formed on the sleeve, the housing cavity is suitable for housing at least part of the rotary shaft, the rotary shaft can rotate relative to the sleeve, a first inlet channel and a first outlet channel which are communicated with the second cavity are formed on the rotary shaft, a second inlet channel and a second outlet channel which are communicated with the first cavity and extend into the housing cavity are formed on the sleeve, and the first outlet channel and the second outlet channel are communicated and configured to at least part of the cooling channel, and the first inlet channel and the second inlet channel are communicated and configured to at least the other part of the cooling channel.
According to one embodiment of the invention, the outlet of the second inlet channel is arranged on the end wall or the peripheral wall of the accommodating cavity; the inlet of the second outlet flow passage is arranged on the end wall or the peripheral wall of the accommodating cavity.
According to one embodiment of the invention, a first groove and a second groove are circumferentially arranged on the inner peripheral wall of the accommodating cavity, and the first groove and the second groove are axially arranged at intervals, wherein the first groove is communicated with the outlet of the second inlet channel and is opposite to the inlet of the first inlet channel in the radial direction of the rotating shaft; the second groove is communicated with the inlet of the second outlet flow channel and is opposite to the outlet of the first outlet flow channel in the radial direction of the rotating shaft.
According to one embodiment of the invention, the end wall of the accommodating cavity is provided with a first groove and a second groove, the first groove and the second groove are arranged into two annular grooves with the same circle center and different radiuses, wherein the first groove is communicated with the outlet of the second inlet channel and the inlet of the first inlet channel, the projection of the inlet of the first inlet channel in the axial direction falls into the first groove, the second groove is communicated with the inlet of the second outlet channel and the outlet of the first outlet channel, and the projection of the outlet of the first outlet channel in the axial direction falls into the second groove.
According to an embodiment of the present invention, the rotary shaft includes a shaft portion and a disk portion, the shaft portion is accommodated in the accommodation chamber, and an outer periphery of the shaft portion is formed with an inlet of the first inlet flow passage and an outlet of the first outlet flow passage; the disc portion is connected with the shaft portion and is arranged on the radial inner periphery of the brake disc body, an outlet of the first inlet runner and an inlet of the first outlet runner are formed on the radial outer periphery of the disc portion, and the outlet of the first inlet runner and the inlet of the first outlet runner are respectively communicated with the second cavity.
According to one embodiment of the invention, the hub assembly further comprises a knuckle arranged on a side of the transmission mechanism facing away from the brake disc body, the transmission mechanism being connected with the hub motor.
According to one embodiment of the invention, the hub assembly further comprises an end cap disposed on a side of the knuckle facing away from the transmission, at least a portion of the end cap passing through the knuckle and abutting the transmission.
According to one embodiment of the invention, a third inlet channel and a third outlet channel which are communicated with the first cavity and extend in the axial direction are formed on the end cover, the third inlet channel is communicated with the second inlet channel, and the third outlet channel is communicated with the second outlet channel.
According to one embodiment of the invention, the hub assembly further comprises two connection pipes, which are configured to communicate the third inlet channel and the third outlet channel with the first cavity, respectively.
The vehicle according to the present invention is briefly described below.
According to the vehicle provided by the invention, the cooling fluid in the first cavity can be led to the second cavity through the cooling flow channel to realize heat dissipation of the brake disc assembly, and the cooling fluid can circulate in the first cavity, the second cavity and the cooling flow channel, so that the heat dissipation effect of the brake disc assembly is improved, the braking performance of the vehicle is ensured, and the safety of the vehicle is further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is an exploded view of a hub assembly according to one embodiment of the present invention;
FIG. 2 is a block diagram of a hub assembly in accordance with one embodiment of the present invention;
FIG. 3 is an assembly view of a knuckle and an end cap according to one embodiment of the invention;
FIG. 4 is a cross-sectional view of a sleeve according to one embodiment of the present invention;
FIG. 5 is a cross-sectional view of a rotating shaft according to one embodiment of the present invention;
FIG. 6 is a cross-sectional view of an end cap according to one embodiment of the invention;
fig. 7 is a sectional view of an assembled shaft housing and rotating shaft according to an embodiment of the present invention.
Reference numerals:
a hub assembly 1;
a hub motor 11, a brake disc body 12 and a transmission mechanism 13;
a rotation shaft 131, a first inlet channel 1311, a first outlet channel 1312, a shaft portion 1313, and a disk portion 1314;
a sleeve 132, a receiving chamber 1321, a first recess 1322, a second recess 1323, a second inlet flow path 1324, a second outlet flow path 1325;
knuckle 14, end cap 15, third inlet channel 151, third outlet channel 152, connecting tube 16.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The brake disc of the vehicle is a key structure for providing braking force for the vehicle, the braking performance of the vehicle can be influenced by the heat dissipation effect of the brake disc, in the prior art, the heat dissipation of the brake disc is usually realized in an air cooling mode, but after the hub motor is mounted at the wheel end of the vehicle, the heat dissipation effect of the brake disc can be influenced by the heat of the motor, the braking performance of the vehicle can be influenced by the fact that the heat dissipation of the brake disc is not timely, and potential safety hazards are brought to the vehicle.
A hub assembly according to an embodiment of the present invention is described below with reference to fig. 1-7.
The hub assembly 1 according to the present invention includes a hub motor 11 and a brake disc assembly, the hub motor 11 having a first cavity formed therein; the brake disc assembly is internally provided with a second cavity and a cooling flow passage communicated with the second cavity and the first cavity, and the cooling flow passage is suitable for guiding cooling liquid in the first cavity to the second cavity so as to dissipate heat of at least part of the brake disc assembly.
The hub assembly 1 according to the present invention provides a first cavity in the hub motor 11, which first cavity can accommodate a cooling fluid. Meanwhile, the hub assembly 1 is further provided with a second cavity in the brake disc assembly and is communicated with the first cavity through a cooling flow passage, the cooling flow passage can drain cooling liquid in the first cavity into the second cavity, specifically, when the hub assembly 1 works, a driving structure in the hub motor 11 can drive the cooling liquid to flow to the cooling flow passage, the cooling liquid can reach the second cavity under the drainage effect of the cooling flow passage and absorb heat of the brake disc assembly, and the cooling liquid after absorbing the heat can return to the first cavity through the cooling flow passage again so as to realize recycling of the cooling liquid.
The driving structure can be understood as structures such as an oil pump for driving the cooling liquid, and it is worth noting that the route of the cooling liquid flowing to the second cavity is different from the route of the cooling liquid flowing back to the first cavity, and the circulation of the cooling liquid is realized by the route design of the cooling liquid, so that the cost can be reduced. The first cavity, the second cavity and the cooling flow channel form a circulation loop of cooling liquid, the cooling liquid flows in the circulation loop and can take away heat transferred to the second cavity by the brake disc assembly, and the hub assembly 1 performs heat exchange in the second cavity through the cooling liquid so as to realize heat dissipation of the brake disc assembly.
According to one embodiment of the invention, the brake disc assembly comprises a brake disc body 12 and a transmission mechanism 13, wherein the brake disc body 12 is connected with the hub motor 11, a second cavity is formed on the brake disc body 12, and the second cavity is arranged inside the brake disc body 12 around the circle center of the brake disc body 12; the transmission mechanism 13 is arranged on one side of the brake disc body 12, which is away from the hub motor 11, and a cooling flow passage is formed on the transmission mechanism 13, and two ends of the cooling flow passage are respectively communicated with the first cavity and the second cavity.
Because the cooling flow passage and the second cavity are formed within the brake disc assembly, the configuration of the brake disc assembly may affect the flow of the cooling fluid. The brake disc assembly comprises a brake disc body 12 and a transmission mechanism 13, wherein the brake disc body 12 is a structure for providing braking force for a vehicle, the transmission mechanism 13 is used for constructing a cooling flow passage, a second cavity is formed in the brake disc body 12, the cooling flow passage is used for communicating the second cavity with the first cavity, and cooling liquid can enter the second cavity after passing through the cooling flow passage and exchange heat in the second cavity so as to reduce the heat of the brake disc body 12. It should be noted that the second cavity may be configured as an annular cavity disposed around the center of the brake disc body 12, and the design of the second cavity can increase the heat exchange area of the cooling liquid, thereby improving the heat dissipation effect of the brake disc body 12.
According to an embodiment of the present invention, the transmission mechanism 13 includes a rotation shaft 131 and a sleeve 132, one end of the rotation shaft 131 is connected to the brake disc body 12, the other end of the rotation shaft 131 is connected to the sleeve 132, a housing chamber 1321 opened in an axial direction is formed in the sleeve 132, the housing chamber 1321 is adapted to house at least a part of the rotation shaft 131, the rotation shaft 131 is rotatable relative to the sleeve 132, wherein a first inlet flow passage 1311 and a first outlet flow passage 1312 communicating with a second chamber are formed in the rotation shaft 131, a second inlet flow passage 1324 and a second outlet flow passage 1325 communicating with the first chamber and extending into the housing chamber 1321 are formed in the sleeve 132, the first inlet flow passage 1311 and the second inlet flow passage 1324 communicate and are configured as at least a part of the cooling flow passage.
Since the cooling flow passage is formed in the transmission mechanism 13, the configuration of the transmission mechanism 13 affects the design of the cooling flow passage. The transmission mechanism 13 comprises a shaft sleeve 132 and a rotating shaft 131, wherein the rotating shaft 131 is connected with the brake disc body 12, and the rotating shaft 131 can synchronously rotate with the brake disc body 12 during operation. A shaft sleeve 132 is provided at an end of the rotary shaft 131 remote from the brake disc body 12, and a housing chamber 1321 is formed in the shaft sleeve 132 so as to be opened in an axial direction, and at least a part of the rotary shaft 131 is housed in the housing chamber 1321 and is rotatable relative to the shaft sleeve 132 when assembled. The housing 1321 is provided to improve stability when the rotation shaft 131 and the sleeve 132 are rotated relatively.
Further, a first inlet flow channel 1311 and a first outlet flow channel 1312 communicating with the second cavity are formed on the rotation shaft 131, a second inlet flow channel 1324 and a second outlet flow channel 1325 communicating with the first cavity are formed on the sleeve 132, and when the rotation shaft 131 is assembled with the sleeve 132, the first inlet flow channel 1311 and the second inlet flow channel 1324 cooperate to form at least a part of a cooling flow channel and communicate the first cavity with the second cavity, and the first outlet flow channel 1312 and the second outlet flow channel 1325 cooperate to form at least another part of a cooling flow channel and communicate the second cavity with the first cavity, specifically, a flow path of the cooling liquid can be briefly summarized as: the cooling liquid flows out of the first cavity, sequentially passes through the second inlet flow passage 1324 and the first inlet flow passage 1311, then enters the second cavity, exchanges heat in the second cavity, flows out of the second cavity, sequentially passes through the first outlet flow passage 1312 and the second outlet flow passage 1325, and then flows into the first cavity. The transmission mechanism 13 realizes the recycling of the cooling liquid, can continuously dissipate heat of the brake disc body 12 while saving cost, and improves the heat dissipation effect of the brake disc body 12.
According to one embodiment of the invention, the outlet of the second inlet flow passage 1324 is provided in an end wall or peripheral wall of the receiving chamber 1321; the inlet of the second flow passage 1325 is provided at an end wall or a peripheral wall of the receiving chamber 1321. Specifically, the sleeve 132 sets the outlet of the second inlet flow path 1324 on the peripheral wall of the accommodating cavity 1321, and meanwhile, the sleeve 132 sets the inlet of the second outlet flow path 1325 on the peripheral wall of the accommodating cavity 1321, and it is noted that the projection of the inlet of the second outlet flow path 1325 and the outlet of the second inlet flow path 1324 on the sleeve 132 are set in a staggered manner, so that the design of the inlet of the second outlet flow path 1325 and the outlet of the second inlet flow path 1324 can avoid the interference between the route of the cooling liquid flowing to the second cavity and the route of the cooling liquid flowing back to the first cavity, and ensure that the cooling liquid can be recycled normally.
According to one embodiment of the present invention, the inner peripheral wall of the housing cavity 1321 is circumferentially provided with a first groove 1322 and a second groove 1323, the first groove 1322 and the second groove 1323 being arranged at intervals in the axial direction, wherein the first groove 1322 communicates with the outlet of the second inlet flow passage 1324 and is directly opposite to the inlet of the first inlet flow passage 1311 in the radial direction of the rotary shaft 131; the second groove 1323 communicates with an inlet of the second flow passage 1325 and is directly opposite to an outlet of the first flow passage 1312 in the radial direction of the rotary shaft 131.
Since at least part of the rotation shaft 131 is accommodated in the accommodation chamber 1321, the configuration of the accommodation chamber 1321 may affect the flow of the cooling liquid between the boss 132 and the rotation shaft 131. The inner peripheral wall of the receiving chamber 1321 is circumferentially provided with a first groove 1322 and a second groove 1323, the first groove 1322 and the second groove 1323 are axially spaced apart, an outlet of the second inflow path 1324 communicates with the first groove 1322, an inlet of the second outflow path 1325 communicates with the second groove 1323, an inlet of the first inflow path 1311 communicates with the first groove 1322, and an outlet of the first outflow path 1312 communicates with the second groove 1323 when the sleeve 132 is assembled with the rotation shaft 131. Here, the inlet of the first inlet channel 1311 may be in communication with the first groove 1322 such that the inlet of the first inlet channel 1311 is directly opposite to the first groove 1322 in the radial direction of the rotary shaft 131, and similarly, the outlet of the first outlet channel 1312 may be in communication with the second groove 1323 such that the outlet of the first outlet channel 1312 is directly opposite to the second groove 1323 in the radial direction of the rotary shaft 131. When the rotary shaft 131 rotates in the housing chamber 1321, the inlet of the first inlet flow passage 1311 radially opposite to the first groove 1322 may be constantly in communication with the outlet of the second inlet flow passage 1324, and similarly, the outlet of the first outlet flow passage 1312 radially opposite to the second groove 1323 may be constantly in communication with the inlet of the second outlet flow passage 1325.
At this time, the flow of the cooling liquid in the transmission mechanism 13 can be understood as: the cooling liquid flowing out of the first cavity enters the first groove 1322 through the second inflow channel 1324, and the cooling liquid entering the first groove 1322 can enter the second cavity through the first inflow channel 1311; the cooling fluid flowing out of the second cavity enters the second groove 1323 through the first outflow channel 1312, and the cooling fluid entering the second groove 1323 may enter the first cavity through the second outflow channel 1325. The design of the first groove 1322 and the second groove 1323 prevents the mutual interference between the paths of the coolant reciprocating in the circulation, ensuring the circulation flow of the coolant.
According to one embodiment of the present invention, the end wall of the receiving cavity 1321 is provided with a first groove 1322 and a second groove 1323, the first groove 1322 and the second groove 1323 are provided as two annular grooves of the same center and different radii, wherein the first groove 1322 communicates with the outlet of the second inlet flow path 1324 and the inlet of the first inlet flow path 1311, and the projection of the inlet of the first inlet flow path 1311 in the axial direction falls into the first groove 1322, the second groove 1323 communicates with the inlet of the second outlet flow path 1325 and the outlet of the first outlet flow path 1312, and the projection of the outlet of the first outlet flow path 1312 in the axial direction falls into the second groove 3.
Since at least part of the rotation shaft 131 is accommodated in the accommodation chamber 1321, the configuration of the accommodation chamber 1321 may affect the flow of the cooling liquid between the boss 132 and the rotation shaft 131. The end wall of the accommodating cavity 1321 is provided with a first groove 1322 and a second groove 1323, the first groove 1322 and the second groove 1323 form concentric annular grooves with different radiuses on the end wall of the accommodating cavity 1321, meanwhile, the outlet of the second inflow channel 1324 is communicated with the first groove 1322, the inlet of the second outflow channel 1325 is communicated with the second groove 1323, and it can be understood that the outlet of the second inflow channel 1324 is arranged in the first groove 1322, and the inlet of the second outflow channel 1325 is arranged in the second groove 1323. When the rotation shaft 131 goes deep into the accommodation chamber 1321, the projection of the inlet of the first inflow channel 1311 in the axial direction falls into the first groove 1322, and the projection of the outlet of the first outflow channel 1312 in the axial direction falls into the second groove 1323. When the rotary shaft 131 rotates, the first inlet flow channel 1311 can be constantly in communication with the first recess 1322, and similarly, the first outlet flow channel 1312 can be constantly in communication with the second recess 1323. The provision of the first groove 1322 and the second groove 1323 prevents the mutual interference between the paths of the coolant reciprocating in the circulation, ensuring the circulation flow of the coolant.
According to an embodiment of the present invention, the rotary shaft 131 includes a shaft portion 1313 and a disk portion 1314, the shaft portion 1313 being accommodated in the accommodation chamber 1321, an inlet of the first inlet flow channel 1311 and an outlet of the first outlet flow channel 1312 being formed at an outer periphery of the shaft portion 1313; the disk portion 1314 is connected to the shaft portion 1313 and is provided on a radially inner periphery of the brake disk body 12, and an outlet of the first inlet channel 1311 and an inlet of the first outlet channel 1312 are formed on a radially outer periphery of the disk portion 1314, and the outlet of the first inlet channel 1311 and the inlet of the first outlet channel 1312 communicate with the second chamber, respectively.
Since the rotation shaft 131 can realize the mutual flow of the coolant between the boss 132 and the brake disc body 12, the configuration of the rotation shaft 131 may affect the flow condition of the coolant. The rotary shaft 131 is configured with a shaft portion 1313 and a disk portion 1314, wherein the shaft portion 1313 is receivable in the receiving chamber 1321, and an inlet to the first inlet flow path 1311 and an outlet to the first outlet flow path 1312 are formed in an outer periphery of the shaft portion 1313, and the shaft portion 1313 is designed to ensure a flow of the coolant between the boss 132 and the rotary shaft 131; the disk portion 1314 is connected to the shaft portion 1313 and is provided on the radially inner periphery of the brake disk body 12, so that the connection stability between the rotary shaft 131 and the brake disk body 12 is improved, and the radially outer periphery of the disk portion 1314 is provided with the outlet of the first inlet flow channel 1311 and the inlet of the first outlet flow channel 1312, which are respectively connected to the second chamber, so that the cooling liquid can flow into or out of the second chamber in the radial direction, and the cooling liquid flow efficiency in the radial direction is higher than that in the other directions because the disk portion 1314 and the brake disk body 12 are kept rotating in synchronization.
According to one embodiment of the invention, the hub assembly 1 further comprises a knuckle 14, said knuckle 14 being arranged at a side of said transmission 13 facing away from said brake disc body 12, said transmission 13 being connected to said hub motor 11. The structure of the hub assembly 1 affects the stability of the mating of the transmission 13 with the brake disc body 12. The steering knuckle 14 is arranged on one side of the transmission mechanism 13, which is away from the brake disc body 12, of the hub assembly 1, and the steering knuckle 14 is connected with the hub motor 11 and can be stopped with the transmission mechanism 13 in the axial direction, so that the stability of the cooperation between the transmission mechanism 13 and the brake disc body 12 is improved.
According to one embodiment of the invention, the hub assembly 1 further comprises an end cap 15, the end cap 15 being arranged on the side of the knuckle 14 facing away from the transmission 13, at least part of the end cap 15 passing through the knuckle 14 and being in abutment with the transmission 13. The wheel hub assembly 1 has still set up end cover 15 in the knuckle 14 side that deviates from drive mechanism 13, and at least part of end cover 15 can pass knuckle 14 and stop with drive mechanism 13, and at least another part of end cover 15 can be fixed with knuckle 14 through fastener such as bolt, and the setting of end cover 15 has further improved the stability of wheel hub assembly 1.
According to an embodiment of the present invention, the end cap 15 is formed with a third inlet flow channel 151 and a third outlet flow channel 152 which are communicated with the first cavity and extend in the axial direction, the third inlet flow channel 151 is communicated with the second inlet flow channel 1324, and the third outlet flow channel 152 is communicated with the second outlet flow channel 1325. Since the hub assembly 1 is assembled, the communication between the cooling fluid passage and the first cavity is affected by the knuckle 14 and the end cap 15. The hub assembly 1 is provided with a third inlet flow channel 151 and a third outlet flow channel 152 extending in the axial direction on the end cover 15, and the third inlet flow channel 151 and the third outlet flow channel 152 respectively communicate the second inlet flow channel 1324 and the second outlet flow channel 1325 with the first cavity, so that the normal flow of the cooling liquid is realized.
According to an embodiment of the present invention, the hub assembly 1 further includes two connection pipes 16, and the two connection pipes 16 respectively communicate the third inlet flow channel 151 and the third outlet flow channel 152 with the first cavity. The wheel hub assembly 1 has set up two connecting pipes 16 in the brake disc subassembly outside, and two connecting pipes 16 are respectively with third runner 151 and third runner 152 and first cavity intercommunication, and the flow between first cavity and drive mechanism 13 has been realized in the cooling of setting up of connecting pipe 16, and simultaneously, connecting pipe 16 setting up in the outside of brake disc subassembly can avoid wheel hub assembly 1 during operation connecting pipe 16 to take place to interfere with the brake disc subassembly, has improved the security of wheel hub assembly 1.
In some embodiments, the hub assembly 1 may further provide a heat dissipating structure for cooling in the hub motor 11, where the heat dissipating structure may be a radiator, a heat sink, or other type of heat dissipating structure. After the cooling liquid flows back to the first cavity, the cooling liquid carrying heat can be cooled under the action of the heat radiation structure, so that the cooling liquid recycled into the second cavity is in a low-temperature state, and the heat radiation effect of the hub assembly 1 can be further improved.
The vehicle according to the present invention is briefly described below.
The vehicle according to the invention comprises the hub assembly 1 in the embodiment, and since the vehicle according to the invention is provided with the hub assembly 1 in the embodiment, the hub assembly 1 can drain the cooling liquid in the first cavity to the second cavity through the cooling flow channel to realize heat dissipation of the brake disc assembly in the vehicle operation, and the cooling liquid can circulate in the first cavity, the second cavity and the cooling flow channel, so that the heat dissipation effect of the brake disc assembly is improved, the braking performance of the vehicle is ensured, and the safety of the vehicle is further improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the invention, a "first feature" or "second feature" may include one or more of such features.
In the description of the present invention, "plurality" means two or more.
In the description of the invention, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A hub assembly, comprising:
the hub motor is internally provided with a first cavity;
the brake disc assembly is internally provided with a second cavity and a cooling flow passage which is communicated with the second cavity and the first cavity, and the cooling flow passage is suitable for guiding cooling liquid in the first cavity to the second cavity so as to dissipate heat of at least part of the brake disc assembly.
2. The hub assembly of claim 1, wherein the brake disc assembly comprises:
the brake disc body is connected with the hub motor, a second cavity is formed on the brake disc body, and the second cavity is arranged in the brake disc body around the circle center of the brake disc body;
the transmission mechanism is arranged on one side, deviating from the hub motor, of the brake disc body, a cooling flow passage is formed in the transmission mechanism, and two ends of the cooling flow passage are respectively communicated with the first cavity and the second cavity.
3. The hub assembly of claim 2, wherein the transmission mechanism comprises:
a rotating shaft, one end of which is connected with the brake disc body,
a shaft housing formed with an accommodation chamber opened in an axial direction, the accommodation chamber being adapted to accommodate at least a part of the rotation shaft rotatable with respect to the shaft housing, wherein
The rotary shaft is provided with a first inlet channel and a first outlet channel which are communicated with the second cavity, the shaft sleeve is provided with a second inlet channel and a second outlet channel which are communicated with the first cavity and extend into the accommodating cavity, the first outlet channel and the second outlet channel are communicated and configured to be at least partial cooling channels, and the first inlet channel and the second inlet channel are communicated and configured to be at least one part of the other cooling channels.
4. A hub assembly according to claim 3, wherein the outlet of the second inlet channel is provided in an end wall or peripheral wall of the receiving chamber; the inlet of the second outlet flow passage is arranged on the end wall or the peripheral wall of the accommodating cavity.
5. The hub assembly of claim 4, wherein the inner peripheral wall of the receiving cavity is circumferentially provided with first and second grooves spaced axially apart, wherein
The first groove is communicated with the outlet of the second inlet channel and the inlet of the first inlet channel, and the inlet of the first inlet channel is opposite to the first groove in the radial direction of the rotating shaft;
the second groove is communicated with the inlet of the second outlet flow channel and the outlet of the first outlet flow channel, and the outlet of the first outlet flow channel is opposite to the second groove in the radial direction of the rotating shaft.
6. The hub assembly of claim 4, wherein the end wall of the receiving cavity is provided with a first groove and a second groove, the first groove and the second groove are provided as two annular grooves with the same center and different radii, wherein,
the first groove is communicated with the outlet of the second inlet channel and the inlet of the first inlet channel, the projection of the inlet of the first inlet channel in the axial direction falls into the first groove, the second groove is communicated with the inlet of the second outlet channel and the outlet of the first outlet channel, and the projection of the outlet of the first outlet channel in the axial direction falls into the second groove.
7. The hub assembly of claim 5 or 6, wherein the rotating shaft comprises:
a shaft portion which is accommodated in the accommodation chamber, and an inlet of the first inlet flow passage and an outlet of the first outlet flow passage being formed on an outer periphery of the shaft portion;
the disc part is connected with the shaft part and is arranged on the radial inner periphery of the brake disc body, the radial outer periphery of the disc part is provided with an outlet of the first inlet runner and an inlet of the first outlet runner, and the outlet of the first inlet runner and the inlet of the first outlet runner are respectively communicated with the second cavity.
8. The hub assembly of claim 3, further comprising: the steering knuckle is arranged on one side, deviating from the brake disc body, of the transmission mechanism, and the transmission mechanism is connected with the hub motor.
9. The hub assembly of claim 8, further comprising: the end cover is arranged on one side, away from the transmission mechanism, of the steering knuckle, and at least part of the end cover penetrates through the steering knuckle and is stopped with the transmission mechanism.
10. The hub assembly of claim 9, wherein a third inlet channel and a third outlet channel are formed in the end cap that communicate with the first cavity and extend in an axial direction, the third inlet channel communicating with the second inlet channel and the third outlet channel communicating with the second outlet channel.
11. The hub assembly of claim 10, further comprising: and the two connecting pipes are used for respectively communicating the third inlet flow passage and the third outlet flow passage with the first cavity.
12. A vehicle comprising a hub assembly according to any one of claims 1-11.
CN202311028538.9A 2023-08-14 2023-08-14 Hub assembly and vehicle Pending CN116946082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311028538.9A CN116946082A (en) 2023-08-14 2023-08-14 Hub assembly and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311028538.9A CN116946082A (en) 2023-08-14 2023-08-14 Hub assembly and vehicle

Publications (1)

Publication Number Publication Date
CN116946082A true CN116946082A (en) 2023-10-27

Family

ID=88462054

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311028538.9A Pending CN116946082A (en) 2023-08-14 2023-08-14 Hub assembly and vehicle

Country Status (1)

Country Link
CN (1) CN116946082A (en)

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