CN218449680U - Wheel hub's exhaust structure and electric motor car wheel hub - Google Patents
Wheel hub's exhaust structure and electric motor car wheel hub Download PDFInfo
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- CN218449680U CN218449680U CN202221061267.8U CN202221061267U CN218449680U CN 218449680 U CN218449680 U CN 218449680U CN 202221061267 U CN202221061267 U CN 202221061267U CN 218449680 U CN218449680 U CN 218449680U
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Abstract
The invention belongs to the technical field of electric vehicle accessories, in particular to an exhaust structure of a wheel hub and an electric vehicle wheel hub, wherein a fixed shaft of a wheel hub motor is provided with a threading hole, and a leading-out wire of the wheel hub motor extends out of the threading hole; the outgoing line comprises a plurality of wire cores and an outer sheath; the outer sheath covers the outer parts of the wire cores; a separation chamber is arranged in the shunt joint at the outer end of the outgoing line, and a first end, a second end and a third end are arranged on the peripheral side of the separation chamber; a wire core is inserted into the first end, passes through the separation chamber and then extends out of the second end; the gap channel between the sinle silk switches on to the separation cavity, communicates external environment and separation cavity at the exhaust hole through the third end. The inside gas of wheel hub and fluid can switch on to the separation cavity through the slit passage between the sinle silk, and the rethread is separated among the cavity release and the external environment.
Description
Technical Field
The invention belongs to the technical field of electric vehicle accessories, and particularly relates to an exhaust structure of a wheel hub and an electric vehicle wheel hub.
Background
When a hub motor of the electric vehicle runs, the air pressure inside the hub can rise along with the temperature, and the air pressure inside and outside the motor can be unbalanced; the hot air in the hub can be discharged through the motor wire core and the end cover oil seal. When the temperature in the hub is reduced, the air pressure in the motor is lower than the external air pressure, and water vapor in the air enters the motor through a gap between the wire core of the motor wire and the insulating layer, so that the water enters the motor and gets rusty;
in addition, oil is usually injected into some high-end hub motors, and the stator assembly is cooled by oil; under the condition that the air pressure inside and outside the wheel hub is unbalanced, oil can be discharged outwards along the wire core of the motor, and the service life of the motor is influenced.
The application number is CN202021033082.7, has disclosed a hub motor with dry ventilative structure, through install a ventilative liquid-tight valve member (dry ventilative structure) on the end cover of wheel hub additionally, reach the air pressure equilibrium effect inside and outside the wheel hub;
the disadvantages are as follows:
1. the air-permeable and liquid-tight valve member is arranged on the end cover of the hub, and the valve member is collided in the daily use process, so that the valve member is ineffective;
2. punching holes on a hub end cover, and then installing a gas-permeable and liquid-impermeable valve member; the requirement on the accuracy of end cover punching is high, an additional process is added, and the cost is increased; between the valve member and the bore of the end cap, there is a risk of leakage.
Disclosure of Invention
The invention aims to provide an exhaust structure and an electric vehicle hub, which are simple in structure, good in waterproof performance and low in cost.
The purpose of the invention is realized as follows:
an exhaust structure of a hub comprises a fixed shaft, wherein the fixed shaft is arranged on a hub motor of an electric vehicle, a threading hole is formed in the fixed shaft, and a leading-out wire of the hub motor extends out of the threading hole;
the outgoing line comprises a plurality of wire cores and an outer leather sleeve; the outer leather sleeve is coated outside the plurality of wire cores; the outer wall of the outer leather sleeve is in sealing fit with the threading hole; a gap channel is formed between the wire cores, and one end of the gap channel is communicated to an inner cavity of the hub motor;
the outer end of the outgoing line extends upwards to the inside of the electric locomotive shell;
the outer end of the outgoing line is provided with an exhaust joint, a separation chamber is arranged in the exhaust joint, and a first joint, a second joint and a third joint are arranged on the peripheral side of the separation chamber;
the sheath sleeve and the wire core are inserted into the first connector, and the sheath sleeve and the first connector are sealed;
the wire core passes through the separation chamber and then extends out of the second connector; the wire core and the second joint are sealed;
the slit channel between the wire cores is conducted to the separation chamber.
Preferably, a gas-permeable liquid-impermeable valve member is arranged on the third joint, and the separation chamber is communicated with the external environment through the gas-permeable liquid-impermeable valve member.
Preferably, the exhaust fitting comprises a shunt fitting and a cuff; the envelope is wrapped outside the shunt joint;
the separation chamber is arranged in the shunt joint, and the first end, the second end and the third end of the shunt joint are arranged on the peripheral side of the separation chamber; the sheath sleeve and the wire core are inserted into the first end, and the sheath sleeve and the first end are sealed; the sinle silk stretches out the second end, be provided with the exhaust hole on the third end.
The invention can be further arranged that the outer end of the outgoing line extends into the controller of the electric vehicle; and the wire core extends out of the second joint and then is connected with a circuit board of the controller.
The invention can be further arranged in such a way that the second end is provided with a first rubber sleeve body, the first rubber sleeve body is preformed with a plurality of through holes, and the through holes correspond to the wire cores one by one; the wire cores pass through the corresponding through holes.
The invention can be further provided that the exterior of the rubber sleeve body I is provided with a hoop ring; the first rubber sleeve body is wrapped by the envelope.
The invention can be further arranged in that the outer wall of the outer leather sleeve and the threading hole are sealed by glue.
The invention can be further arranged in that the threading hole comprises an oblique section, the inner wall of the oblique section is provided with a step part, and the outer side of the step part is provided with an internal thread part;
the rubber sleeve body II is in a circular ring shape; the rubber sleeve body II is sleeved outside the outer leather sleeve and abuts against the step part;
the copper sleeve is sleeved on the outer side of the outer leather sleeve and abuts against the rubber sleeve body II; the copper sleeve tightens the outer leather sleeve;
the nut sleeve is sleeved outside the outer leather sleeve and abuts against the copper sleeve; the nut sleeve is screwed into the internal thread part and tightly presses the rubber sleeve body II.
The invention can be further provided that the threading hole is obliquely arranged on the fixed shaft; a protective spring is sleeved outside the outer leather sleeve; one end of the protective spring is embedded into the inclined section of the threading hole and fixed, and the other end of the protective spring extends to the outer side of the threading hole.
An electric vehicle wheel hub comprises the exhaust structure.
Compared with the prior art, the invention has the outstanding and beneficial technical effects that:
the fixing shaft is provided with an inclined section, the inner wall of the inclined section is provided with a step part, and the outer side of the step part is provided with an internal thread part; the nut sleeve is screwed into the inner thread part and tightly presses the rubber sleeve body II, so that the outer leather sleeve and the threading hole can be effectively sealed, and water cannot enter.
The outer end of the outgoing line extends upwards to the inside of the shell of the electric vehicle, for example, the outgoing line is directly connected to the inside of a controller, and the parts are in relatively high positions and generally do not contact water; the outer end of the outgoing line is provided with a shunt joint, and a separation chamber is arranged inside the shunt joint; the inside gas of wheel hub and fluid can switch on to the separation cavity through the slit passage between the sinle silk, and the rethread is separated among the cavity release and the external environment.
The protective spring can effectively prevent the outer sheath from being scratched by the fixed shaft and protect the wire core inside.
Drawings
Fig. 1 is a schematic view of an electric vehicle hub.
Figure 2 is a schematic view of the outer end of the outlet.
Fig. 3 is a sectional view of the outer end of the lead-out wire.
Figure 4 is an exploded view of the outer end of the lead-out wire.
Fig. 5 is one of the fitting views of the fixed shaft and the lead-out wire.
Fig. 6 is a second schematic view of the fitting of the fixed shaft and the lead-out wire.
The reference numerals in the figures denote the meanings:
10-a rim; 20-a fixed shaft; 30-an outgoing line; 40-end cover one; 80-magnetic steel sheet; 90-end cover two; 100-electric vehicle wheel hub;
21-threading hole; 22-an oblique section; 221-a step portion; 222-an internal threaded portion;
301-a wire core; 302-a guard spring; 304-rubber sleeve body two; 305-a copper sleeve; 306-a nut sleeve; 307-outer leather sheath; 310-glue; 311-a stator assembly;
3000-exhaust joint; 3000A-first joint; 3000B-a second joint; 3000C — third linker;
3011-envelope; 3011A-a first end of the envelope; 3011B-a second end of the envelope; 3011C-the central aperture of the envelope;
3012-a shunt connection; 3012A-first end; 3012B-a second end; 3012C — a third end; 3012D-a separation chamber; 3012C 1-vent;
3013-a gas permeable, liquid impermeable valve member; 3013A-a hollow bore; 3013B-a polymer film layer;
3014-a tightening ring; 3015-rubber sleeve one; 3015A-through holes.
Detailed Description
The invention is further described below with reference to specific examples:
in a first embodiment, as shown in fig. 1 to 6, an exhaust structure of a wheel hub includes a fixing shaft 20, which is mounted on a wheel hub motor of an electric vehicle, the fixing shaft being provided with a threading hole 21, and an outgoing line 30 of the wheel hub motor extending out of the threading hole 21;
the outgoing line 30 comprises a plurality of wire cores 301 and an outer sheath 307; the outer sheath 307 is coated outside the plurality of wire cores 301; the outer wall of the outer leather sheath 307 is in sealing fit with the threading hole 21; the wire core 301 generally has six thick wires, three thick wires correspond to three wires of U, V and W of the stator winding, and three thin wires correspond to the Hall sensor and the like; at present, some vehicle types are directly provided with a controller of an electric vehicle on a stator assembly in a hub, a power line of a core wire is connected with a battery, and a signal line of the core wire is in two-way communication connection with an external central control device;
the outer end of the lead-out wire 30 extends upwards to the inside of the electric locomotive shell; the direct exposure to the environment is avoided, and the protection effect is improved;
an exhaust joint 3000 is arranged at the outer end of the leading-out wire 30, a separation chamber 3012D is arranged in the exhaust joint 3000, and a first joint 3000A, a second joint 3000B and a third joint 3000C are arranged on the peripheral side of the separation chamber 3012D;
the sheath and the wire core are inserted into the first connector 3000A, and the sheath and the first connector 3000A are sealed;
the wire core 301 passes through the separation chamber 3012D and then extends out of the second connector 3000B; the wire core 301 and the second joint 3000B are sealed;
the slit channel between the wire cores 301 leads to the separation chamber 3012D.
A gas-permeable liquid-impermeable valve component 3013 is disposed on the third joint 3012C, and the separation chamber 3012D communicates with the external environment through the gas-permeable liquid-impermeable valve component 3013.
Preferably, the exhaust fitting 3000 includes a shunt fitting 3012 and a jacket 3011; the jacket 3011 is wrapped around the outside of the shunt joint 3012; the first joint 3000A and the first end 3011A of the cuff form a double seal against the outer sheath 307.
The separation chamber 3012D is arranged inside the branch joint 3012, and a first end 3012A, a second end 3012B and a third end 3012C are arranged on the periphery of the separation chamber 3012D; the shunt joint 3012 may also be configured in a tee shape or a sphere; when the shunt joint 3012 is spherical, the first end 3012A, the second end 3012B, and the third end 3012C are three holes distributed on the spherical surface;
the end of the sheath is inserted into the first end 3012A and sealed;
the wire core 301 is inserted into the first end 3012A, passes through the separation chamber 3012D, and then protrudes out of the second end 3012B, the wire core 301 and the second end 3012B being sealed; the wire cores 301 are circular, a slit channel is formed among the wire cores 301, one end of the slit channel is communicated with an inner cavity of the hub motor, and the other end of the slit channel is communicated with the separation cavity 3012D; air and oil can be trapped in the separation chamber and can not pass through the second end 3012B, and stability of the controller is not affected.
The threading hole 21 is arranged on the fixed shaft, and the oil amount (generally silicon oil, which is not conductive) in the hub is small, so that the fixed shaft cannot be immersed; when the hub rotates, oil can splash into a gap channel between the core wires; the invention does not seek to block the gap channel between the core wires any more, but selects the gap channel as an exhaust channel; air and a small part of oil in the hub can be discharged upwards along the slit passage and then treated through the branch joint 3012.
Gas permeable, liquid impermeable valve components 3013 are commercially available and serve the central function of conducting gas to the external environment through a polymeric film layer 3013, but preventing liquid from passing through, thereby completely preventing oil from leaking out and preventing water vapor from entering.
The invention can be further arranged that the outer end of the lead-out wire 30 extends to the inside of the controller of the electric vehicle; and the wire core 301 extends out of the second end 3012B and then is connected with a circuit board of the controller.
The invention can be further set that the second end 3012B is provided with a first rubber sleeve 3015, the first rubber sleeve 3015 is preformed with a plurality of through holes 3015A, and the through holes correspond to the wire cores 301 one by one; wire cores 301 pass through corresponding vias 3015A.
The invention can be further provided that the exterior of the rubber sleeve body I3015 is provided with a hoop 3014. The tightening ring 3014 can contract the rubber sleeve body 3015, so that the rubber sleeve body 3015 can seal the gap channel between the wire cores 301.
The invention can be further configured that the outside of the shunt joint 3012 is wrapped by an envelope 3011; the sleeve 3011 is wrapped by the rubber sleeve 3015 to achieve a thorough sealing effect.
The invention can be further configured that the space between the outer wall of the outer leather sheath 307 and the threading hole 21 is sealed by glue 310. After the glue is solidified, the lead-out wire is fixed in the hub and sealed.
The invention can be further arranged that the threading hole 21 comprises an oblique section 22, the inner wall of the oblique section is provided with a step part 221, and the outer side of the step part is provided with an internal thread part 222;
the rubber sleeve body II 304 is annular; the second rubber sleeve body 304 is sleeved outside the outer leather sleeve 307 and abuts against the step part 221;
the copper sleeve 305 is sleeved outside the outer leather sleeve 307 and abuts against the second rubber sleeve body 304; the copper sheath tightens the outer sheath 307;
a nut sleeve 306 sleeved outside the outer leather sleeve 307 and abutted against the copper sleeve 305; the nut sleeve 306 is screwed into the internal thread part 222 and presses the second rubber sleeve body 304.
When the nut sleeve is screwed into the internal thread part, the rubber sleeve body II is pressed, the front section of the rubber sleeve body II is abutted against the step part 221, the rubber sleeve body II deforms under the action of external force and presses the outer leather sleeve 307, and the design is to seal between the outer leather sleeve and the threading hole 21; the outer leather sleeve 307 is fixed through the copper sleeve, so that the stability and the sealing of the outgoing line are ensured, and water cannot enter. And the nut sleeve and the rubber sleeve body II further fix the outgoing line outside the hub and improve the sealing property.
The invention can be further provided that the threading hole 21 is obliquely arranged on the fixed shaft; the outer side of the outer leather sheath 307 is sleeved with a protective spring 302; one end of the protective spring is embedded into the inclined section 22 of the threading hole 21 and fixed, and the other end of the protective spring extends to the outer side of the threading hole 21. Burrs exist in the threading hole 21, the outer leather sleeve can be cut, and the burrs of the threading hole can be isolated due to the design of the protective spring 302; the protective spring 302 is directly clamped into the threading hole and can be pulled out with larger force.
The second embodiment is substantially the same as the first embodiment, except that the third joint 3012C is directly exposed; that is, third end 3012C is provided with vent 3012C1, which is in direct communication with the external environment and separation chamber 3012D. In the scheme, oil is temporarily stored in the separation chamber 3012D, air is directly released into the environment, after the wheel hub is cooled, the oil is sucked back into the wheel hub, and the waterproof function of the scheme is that a certain isolation can be formed based on the shell of the electric vehicle, so that water vapor is prevented from directly contacting with the branch joint; when the shell of the electric vehicle is damaged, the electric vehicle runs in wading, and the electric vehicle is in foggy weather, the waterproof effect is poor. When the amount of oil entering the gap passage is too large, oil leakage also occurs.
The application claims an electric motor car wheel hub, include exhaust structure.
The rubber parts in direct contact with oil are generally made of fluorine-containing rubber, and common rubber contacts with the oil for a long time and can expand, crack, lose elasticity and even disintegrate.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An exhaust structure of a wheel hub comprises a fixed shaft (20) which is arranged on a wheel hub motor of an electric vehicle, and is characterized in that,
the fixed shaft is provided with a threading hole (21), and a leading-out wire (30) of the hub motor extends out of the threading hole (21);
the outgoing line (30) comprises a plurality of wire cores (301) and a sheath (307); the outer sheath (307) is coated outside the wire cores (301); the outer wall of the outer leather sleeve (307) is in sealing fit with the threading hole (21);
the outer end of the lead-out wire (30) extends upwards to the interior of the electric locomotive shell;
an exhaust joint (3000) is installed at the outer end of the lead-out wire (30), a separation chamber (3012D) is arranged in the exhaust joint (3000), and a first joint (3000A), a second joint (3000B) and a third joint (3000C) are arranged on the peripheral side of the separation chamber (3012D);
the sheath and the wire core are inserted into the first connector (3000A), and the sheath and the first connector (3000A) are sealed;
the wire core (301) passes through the separation chamber (3012D) and then protrudes from the second connector (3000B); the wire core (301) and the second joint (3000B) are sealed;
the slit channels between the wire cores (301) are conducted to the separation chamber (3012D).
2. A hub venting structure as claimed in claim 1, wherein the third connector (3000C) is provided with a gas-permeable, liquid-impermeable valve member (3013), and the separation chamber (3012D) is in communication with the external environment via the gas-permeable, liquid-impermeable valve member (3013).
3. A hub venting structure as claimed in claim 1 or 2, wherein said venting fitting (3000) comprises a shunt fitting (3012) and a cuff (3011); the envelope (3011) is wrapped outside the shunt joint (3012);
the separation chamber (3012D) is arranged in the branch joint (3012), and a first end (3012A), a second end (3012B) and a third end (3012C) of the branch joint (3012) are arranged on the peripheral side of the separation chamber (3012D);
the end of the sheath is inserted into the first end (3012A) and sealed;
the wire core (301) and the wire core are inserted into the first end (3012A), and the sheath and the first end (3012A) are sealed; the wire core (301) extends out of the second end (3012B); an exhaust hole (3012C 1) is formed in the third end (3012C).
4. A hub vent structure according to claim 3, wherein the outer ends of the lead wires (30) extend to the inside of a controller of an electric vehicle; and after the wire core (301) extends out of the second end (3012B), the wire core is connected with a circuit board of the controller.
5. The exhaust structure of the wheel hub according to claim 3, wherein the second end (3012B) is provided with a first rubber sleeve body (3015), the first rubber sleeve body (3015) is preformed with a plurality of through holes (3015A), and the through holes correspond to the wire cores (301) one by one; the wire cores (301) penetrate through the corresponding through holes (3015A); the first rubber sleeve body (3015) is wrapped by the sleeve (3011) at the same time.
6. A hub venting structure as claimed in claim 5, wherein the rubber cover body (3015) is externally provided with a hoop ring (3014).
7. A hub venting structure as claimed in claim 1 wherein the outer wall of the sheath (307) is sealed to the threading hole (21) by glue (310).
8. The air discharge structure of a hub as claimed in claim 1, wherein the threading hole (21) includes an inclined section (22) having a stepped portion (221) provided on an inner wall thereof and an internal threaded portion (222) provided on an outer side thereof;
a rubber sleeve body II (304) which is annular; the rubber sleeve body II (304) is sleeved outside the outer leather sleeve (307) and abuts against the step part (221);
the copper sleeve (305) is sleeved outside the outer leather sleeve (307) and abuts against the second rubber sleeve body (304); the copper sheathing tightens the sheath (307);
a nut sleeve (306) sleeved outside the outer leather sleeve (307) and abutted against the copper sleeve (305); the nut sleeve (306) is screwed into the internal thread part (222) and presses the rubber sleeve body II (304).
9. A hub vent structure according to claim 1, wherein the threading hole (21) is obliquely provided on the fixing shaft; a protective spring (302) is sleeved on the outer side of the outer leather sleeve (307); one end of the protective spring is embedded into the inclined section (22) of the threading hole (21) and fixed, and the other end of the protective spring extends to the outer side of the threading hole (21).
10. An electric vehicle wheel hub characterized by comprising the exhaust structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221061267.8U CN218449680U (en) | 2022-04-28 | 2022-04-28 | Wheel hub's exhaust structure and electric motor car wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221061267.8U CN218449680U (en) | 2022-04-28 | 2022-04-28 | Wheel hub's exhaust structure and electric motor car wheel hub |
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| Publication Number | Publication Date |
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| CN218449680U true CN218449680U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221061267.8U Active CN218449680U (en) | 2022-04-28 | 2022-04-28 | Wheel hub's exhaust structure and electric motor car wheel hub |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023217157A1 (en) * | 2022-05-09 | 2023-11-16 | 信质集团股份有限公司 | Hub motor |
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2022
- 2022-04-28 CN CN202221061267.8U patent/CN218449680U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023217157A1 (en) * | 2022-05-09 | 2023-11-16 | 信质集团股份有限公司 | Hub motor |
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Address after: 318016 No.28, qiansuoxinzi Road, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Xinzhi Group Co.,Ltd. Patentee after: Feida Technology Co.,Ltd. Address before: 318000 No. 28 Xin Qian Xin Road, Jiaojiang District, Taizhou, Zhejiang Patentee before: CHANGYINGXINZHI TECHNOLOGY Co.,Ltd. Patentee before: Feida Technology Co.,Ltd. |
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Effective date of registration: 20230612 Address after: 318016 No.28, qiansuoxinzi Road, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Xinzhi Group Co.,Ltd. Address before: 318016 No.28, qiansuoxinzi Road, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: Xinzhi Group Co.,Ltd. Patentee before: Feida Technology Co.,Ltd. |
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