CN111422263A - Kuppe electric control device for truck - Google Patents
Kuppe electric control device for truck Download PDFInfo
- Publication number
- CN111422263A CN111422263A CN202010367579.0A CN202010367579A CN111422263A CN 111422263 A CN111422263 A CN 111422263A CN 202010367579 A CN202010367579 A CN 202010367579A CN 111422263 A CN111422263 A CN 111422263A
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- CN
- China
- Prior art keywords
- air guide
- guide sleeve
- connecting rod
- movable connecting
- truck
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/001—For commercial vehicles or tractor-trailer combinations, e.g. caravans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/005—Front spoilers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/82—Elements for improving aerodynamics
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an electric adjusting device for a flow guide cover for a truck, which comprises a pair of mounting slide rails, a pair of guide rails and a pair of guide rails, wherein each mounting slide rail is provided with a hinge plate connected with the flow guide cover; the two ends of the movable connecting rod are respectively arranged on the pair of mounting slide rails in a sliding mode, the pair of supporting rods are arranged at the two ends of the movable connecting rod in a rotating mode, one end of each supporting rod is respectively arranged at the two ends of the movable connecting rod in a rotating mode, the other end of each supporting rod is hinged with a linkage plate connected with the air guide sleeve, and a driving device is arranged at the driving end of the driving device and connected with the movable connecting rod to drive the movable connecting rod to move along the radial direction of the movable connecting rod, so that the air guide sleeve is driven to rotate around a rotating point on the hinge plate to achieve the purpose.
Description
Technical Field
The invention relates to the technical field of truck air guide sleeve adjustment, in particular to an electric adjusting device for an air guide sleeve of a truck.
Background
During the running of the truck, the air resistance is proportional to the square of the speed of the truck, and for the container truck which usually runs at a high speed, the effect of the air guide sleeve directly influences the oil consumption and the economic benefit of the truck. The prior container truck air guide sleeve is generally in a use state at a fixed angle position after being installed, and generally has a better resistance reduction effect only aiming at a container with one height. However, due to different actual requirements, the height of the container carried by the truck can be changed or the truck is unloaded, and the resistance reducing effect of the existing air guide sleeve on the conditions can be greatly reduced.
Although some kinds of adjustable air guide hoods exist, the air guide hoods are manually adjusted, so that the air guide hoods are difficult and inconvenient to adjust. In actual use, users often cannot spend time and energy to adjust the angle of the air guide sleeve due to the height change of the container, and finally, even the air guide sleeve with the adjustable angle does not play a role in saving oil and reducing emission.
Therefore, a truck air guide sleeve electric driving adjusting device disclosed in chinese patent application publication No. CN111017049A is provided, which directly drives the transmission structure to rotate through the driving structure, so as to adjust the height of the air guide sleeve.
At present, the demand for energy conservation and emission reduction is increasingly strong, and an electric device capable of easily adjusting the angle of a truck air guide sleeve is necessary to be invented.
Disclosure of Invention
The present invention is directed to a truck pod electric adjustment device, which solves the above-mentioned problems.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
the utility model provides a kuppe electric actuator for truck which characterized in that includes:
each mounting slide rail is provided with a hinge plate connected with the air guide sleeve;
a movable connecting rod, two ends of the movable connecting rod are respectively arranged on the pair of installation slide rails in a sliding way,
one end of each of the support rods is rotatably arranged at the two ends of the movable connecting rod, the other end of each of the support rods is hinged with a linkage plate connected with the air guide sleeve,
and the driving end of the driving device is connected with the movable connecting rod so as to drive the movable connecting rod to move along the radial direction of the movable connecting rod, and further drive the air guide sleeve to rotate around a rotating point on the hinge plate so as to achieve the purpose of adjusting the opening angle of the air guide sleeve.
In a preferred embodiment of the present invention, each mounting rail is provided with a slide way, and both ends of the moving link are slidably disposed on the slide way through rolling members.
In a preferred embodiment of the present invention, the slide rail is made of plastic material, so as to prevent the rolling component from directly contacting with the mounting slide rail, and to perform the functions of shock absorption and noise reduction.
In a preferred embodiment of the invention, the side part of the slideway is further provided with a limit edge, and the limit edge is provided with a limit waist-shaped groove for two ends of the movable connecting rod to pass through.
In a preferred embodiment of the invention, the device comprises a linkage rod, and two ends of the linkage rod are respectively connected with the other ends of a pair of supporting rods.
In a preferred embodiment of the invention, when the driving end of the driving device moves to the maximum opening angle position of the air guide sleeve, the stress of the pair of support rods is transmitted to the pair of mounting slide rails and the pair of support rods, and the driving device is not stressed.
In a preferred embodiment of the present invention, the driving device includes a base and a motor disposed on the base, an output end of the motor is connected to one end of a lead screw, a lead screw nut is disposed on the lead screw, and the other end of the lead screw nut is connected to the movable connecting rod through a connecting member.
In a preferred embodiment of the present invention, the pair of mounting rails is connected to a fixing plate, and the base is fixed to the fixing plate.
In a preferred embodiment of the invention, an integrated controller connected with the motor is arranged in the motor shell, and the integrated controller is connected with a vehicle speed sensor, a wind speed sensor and an ultrasonic sensor which are carried on a vehicle body, senses the running condition of the truck and external environment signals, so that the driving device automatically adjusts the air guide sleeve to stay at a proper angle, and the best fuel economy and the lowest exhaust emission effect are achieved.
In a preferred embodiment of the present invention, an interface through which a connection terminal of the integrated controller extends is disposed on the motor housing, a motor fixing seat is disposed on the base, a thrust bearing connected to the lead screw is disposed on the base, the connection member includes a joint having an external thread at one end and an internal thread at the other end, the other end of the lead screw nut has an external thread matching the internal thread of the joint, a bellows is disposed on the peripheries of the lead screw and the lead screw nut, one end of the bellows is hermetically connected to the base, the other end of the bellows is hermetically connected to the joint through a first nut matching the external thread of the other end of the lead screw nut, and the external thread of the joint is connected to a second nut so as to be fitted and fixed with.
Due to the adoption of the technical scheme, the invention can electrically adjust the opening angle of the air guide sleeve, has reliable structure, simple operation, safety and stability; and the air guide sleeve, the driving device and other parts can form a relatively independent electric air guide sleeve assembly, so that the configuration of a host factory is facilitated, and a customer only needs to fix the installation guide rail on the ceiling of the cab and adapt to a corresponding control wire harness and an operation switch. The angle of the air guide sleeve can be conveniently adjusted according to different working conditions such as different heights of containers carried by trucks or whether the containers are in no-load state, good emission reduction effect is achieved, and fuel is saved; the air guide sleeve can be kept at the corresponding angle position after the adjustment is stopped.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an exploded view of a portion of one embodiment of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 from another perspective.
Fig. 3 is a schematic assembled structure of an embodiment of the present invention.
Fig. 4 is a schematic view of the structure of fig. 3 from another perspective.
Fig. 5 is a schematic view of the structure of fig. 3 from another perspective.
Fig. 6 is an exploded view of one embodiment of the present invention with the pod and drive omitted.
Fig. 7 is a schematic structural diagram of a driving device according to an embodiment of the present invention.
Fig. 8 is a schematic view of the structure of fig. 7 from another perspective.
Fig. 9 is an exploded view of the driving device according to an embodiment of the present invention.
Fig. 10 is a sectional view of a driving apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
Referring to fig. 1 to 10, an electric adjustment device for a truck pod includes a pair of mounting rails 100, a movable link 200, a pair of support rods 300, a driving device 400, and a pod 1.
The pair of mounting sliding rails 100 are fixed on a cab ceiling at intervals in parallel, each mounting sliding rail 100 is provided with a hinge plate 110 connected with the air guide sleeve 1 through a bolt, and one end of each hinge plate 110 is hinged on the mounting sliding rail 100 through a pin shaft 111.
In the present embodiment, each of the mounting rails 100 is provided with a slide rail 120, the slide rail 120 is fixed on the mounting rail 100 by a fastener, the two ends of the movable connecting rod 200 are slidably disposed on the slide rails 120 by rolling members 210, and the rolling members 210 are bearings or rollers. The slide 120 is made of plastic material, so as to prevent the rolling member 210 from directly contacting the mounting rail 100, thereby achieving the functions of shock absorption and noise reduction. The lateral part of the slide 120 is further provided with a limiting edge 130, a limiting waist-shaped groove 131 for the two ends of the movable connecting rod 200 to pass through is formed in the limiting edge 130, the movable connecting rod 200 can move along the direction of the limiting waist-shaped groove 131, a limiting sliding groove is formed in the middle of the slide 120, the rolling part 210 is prevented from deflecting, and the operation precision and the reliability of the whole system are improved on the premise that the manufacturing difficulty of other parts is not increased.
One end of the pair of support rods 300 is rotatably disposed at the two ends of the movable connecting rod 200, in this embodiment, the two ends of the movable connecting rod 200 respectively penetrate through one end of the pair of support rods 300 and then are connected to the support rods 300 through the fastening sleeve 310, so that the support rods 300 can rotate around the end of the movable connecting rod 200, and the end of the movable connecting rod 200 also penetrates through the rotation center of the rolling member 210 and can be used as the rotation axis of the rolling member 210. The other end of the pair of support rods 300 is hinged with a linkage plate 500 connected with the air guide sleeve 1 through a bolt, the linkage plate 500 can be rotatably arranged at the other end of the support rods 300 through short pins, and the linkage plate 500 can rotate around the other end of the support rods 300. In this embodiment, the linkage rod 600 is included, two ends of the linkage rod 600 are respectively connected with the other ends of the pair of support rods 300, and the linkage rod passes through the linkage plate 500 and then is connected with the linkage plate 500 through the fastening sleeve 610, so that the linkage plate 500 can rotate around the end of the linkage rod 600.
The driving end of the driving device 400 is connected to the movable connecting rod 200 to drive the movable connecting rod 200 to move along the radial direction of the movable connecting rod 200, and further drive the pod 1 to rotate around the rotation point on the hinge plate 110 to achieve the purpose of adjusting the opening angle of the pod 1. In this embodiment, the driving device 400 includes a base 410 and a reduction motor 420 disposed on the base 410, an output end of the reduction motor 420 is connected to one end of a lead screw 430, a lead screw nut 440 is disposed on the lead screw 430, and the other end of the lead screw nut 440 is connected to the movable connecting rod 200 through a connecting member. The base 410 is provided with a motor fixing seat 410a, the base 410 is provided with a thrust bearing 411 connected with the lead screw 430, the connecting component comprises a joint 450 with an external thread 451 at one end and an internal thread 452 at the other end, and the lead screw nut 440 has an external thread 441 matched with the internal thread 452 of the joint 450 at the other end. The lead screw 430 and the lead screw nut 440 are peripherally provided with a bellows 460, one end of the bellows 460 is hermetically connected to the base 410 by a pressing plate 461, a screw assembly 462 and the like, the other end is hermetically connected to the joint 450 by a first nut 463, a flat washer 464 and the like which are engaged with the external thread 441 at the other end of the lead screw nut 440, and the external thread 451 of the joint 450 is connected to a second nut 465 and a washer part 466 so as to be engaged and fixed with the hole 221 of the connecting plate 220 on the moving link 200.
The base 410 in the driving device 400 is fixed on the fixing plate 700, the joint 450 of the driving device is rigidly coupled with the connecting plate 220 on the movable connecting rod 200, the internal spline of the reduction motor 420 is engaged with the external spline at the end of the lead screw 430, the rotary motion generated by the reduction motor 420 is converted into the axial telescopic motion between the lead screw 430 and the lead screw nut 440, then the opening angle of the air guide sleeve 1 is adjusted through the movement of the movable connecting rod 200, and the angle of the air guide sleeve 1 is continuously kept to be suitable for the expected requirement through the mechanical self-locking action of the reduction motor 420 and the mechanism components.
In order to improve the control precision of the driving device 400, an integrated controller 470 connected with the motor 420 is arranged in the motor housing 421, pod attitude control (algorithm) software is written in the integrated controller 470, an interface 422 through which a connection terminal 471 of the integrated controller 470 extends is arranged on the motor housing 421, the integrated controller 470 is connected with a control switch on a vehicle body wire harness through the connection terminal 471, and a user can conveniently adjust and maintain the opening angle of the pod by operating the switch. The integrated controller 470 is connected with a vehicle speed sensor, a wind speed sensor and an ultrasonic sensor which are carried on a vehicle body, senses the running condition of the truck and external environment signals, and enables the driving device to automatically adjust the air guide sleeve to stay at a proper angle, so that the best fuel economy and the lowest exhaust emission effect are achieved.
The assembly process of the driving device 400 of the present invention is as follows:
1. sleeving the V-shaped sealing ring 481 into the central hole of the base 410, and then pressing the thrust bearing 411 into the base 410 to form a first process part;
2. sleeving a lead screw ring 483 sleeved with a small O-shaped sealing ring 482 into the end part of a lead screw 430, grinding and riveting the lead screw ring 483 into a whole, screwing a lead screw nut 440 into the lead screw, and pressing a shaft sleeve 481a into the other end of the lead screw 430 to form a second working procedure piece;
3.1, after the thrust bearing 411 of the first working procedure piece is pressed into the screw 430 of the second working procedure piece, the E-shaped retaining ring 489 is clamped into the screw groove to play a role of preventing falling;
3.2, connecting the motor fixing seat 410a and the base 410 into a whole by using a screw washer assembly 484 to play a role in preventing the bearing from moving;
3.3, screwing the first nut 463 into the lead screw nut 440, respectively sleeving the spring washer and the flat washer 464 and the corrugated pipe 460, screwing the joint 450 into the lead screw nut 440 to a certain position, and finally, tightly screwing the first nut 463 and the joint 450, so that two end faces of the corrugated pipe 460 are respectively tightly attached to the end face of the joint 450 and the end faces of the spring washer and the flat washer 464, and the sealing effect is ensured;
forming a third working procedure;
4. after the wiring terminal 471 is inserted into the fixing block 486, the wiring terminal is welded with the PCB which is attached with the electronic component according to the functional design requirement, and then the sealing block 487 is inserted into the terminal and attached to the fixing block 486 to form a working procedure part four (the integrated controller 470);
5. pressing the speed reducing motor 420 into the motor housing 421 to connect the wires thereon with the fourth process component (the integrated controller 470), and then mounting the latter into the motor housing 421, wherein the sealing block 487 is tightly attached to the contact surfaces of the fixing block 486, the connecting terminal 471 and the motor housing 421 to play a role in waterproof and dustproof sealing, and then sleeving the large O-shaped sealing ring 488 on the motor housing 421 to form a fifth process component;
6. the pressing plate 461, the third process element and the fifth process element are tightly combined together through the screw component 462 and the spring washer assembly 489, wherein two end faces of the bottom of the corrugated pipe are tightly attached to the pressing plate 461 and the base 410, the base 410 is tightly combined with the large O-shaped sealing ring 488 and the motor shell 421, two end faces of the head of the corrugated pipe are tightly combined with corresponding parts, and the sealing block 487 is tightly combined with the wiring terminal 471, the fixing block 486 and the motor shell 421, so that the waterproof and dustproof performance of the driving device 400 is ensured to reach the IP67 level. The bellows 460 is fixed to the base 410 at one end and to the joint 450 at the other end, and has a bellows structure that is retractable with the joint 450 due to axial movement of the lead screw 430 and the lead screw nut 440. The V-shaped sealing ring 481 tightly wraps the shaft sleeve 481a pressed into the lead screw 430 and is tightly attached to the contact surface of the base 410 and the thrust bearing 411, so that the waterproof and dustproof functions are enhanced; finally, the second nut 465 and washer 466 are threaded into the joint to couple with the traveling link 200, thus completing the drive mechanism.
The working principle of the invention is as follows:
the speed reducing motor 420 in the switch control driving device 400 rotates forwards and backwards, so that the pair of supporting rods 300 can be driven by the movable connecting rod 200 to move back and forth on the pair of installation sliding rails 100, the air guide sleeve 1 is driven to rotate around the hinge shaft of the hinge plate 110, the opening angle of the air guide sleeve 1 is adjusted, and the air guide sleeve 1 stays and keeps a proper expected opening angle through the mechanical self-locking action of the speed reducing motor 420 and mechanism components. And as the driving device 400 extends, the opening angle of the air guide sleeve 1 gradually decreases until the air guide sleeve is closed; the drive 400 is shortened and the pod 1 is opened to the maximum angle. In this way, the stiffness, stability and reliability of the drive 400 are adapted to the forces to which the pod 1 is subjected. That is, the larger the opening angle of the air guide sleeve 1 is, the larger the wind resistance external force it bears, and the higher the overlap ratio of the screw 430 and the screw nut 440 in the driving device 400 is, the stronger the inherent rigidity, stability and reliability are. In addition, the force born by the air guide sleeve 1 is absorbed by a pair of installation slide rails 100, a pair of support rods 300 and other components more along with the increase of the opening angle of the air guide sleeve, in the maximum opening state, the stress of the pair of support rods 300 is completely transmitted to the pair of installation slide rails 100 and the pair of support rods 300, at the moment, the pair of support rods 300 can be perpendicular to the pair of installation slide rails 100, the pair of support rods 300 are limited mechanically when moving to the end, the driving device 400 is not stressed and is in the optimal working mode, and therefore the running stability, reliability and durable working performance of the whole system are greatly improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a kuppe electric actuator for truck which characterized in that includes:
each mounting slide rail is provided with a hinge plate connected with the air guide sleeve;
a movable connecting rod, two ends of the movable connecting rod are respectively arranged on the pair of installation slide rails in a sliding way,
one end of each of the support rods is rotatably arranged at the two ends of the movable connecting rod, the other end of each of the support rods is hinged with a linkage plate connected with the air guide sleeve,
and the driving end of the driving device is connected with the movable connecting rod so as to drive the movable connecting rod to move along the radial direction of the movable connecting rod, and further drive the air guide sleeve to rotate around a rotating point on the hinge plate so as to achieve the purpose of adjusting the opening angle of the air guide sleeve.
2. The electrical control apparatus of claim 1, wherein each of the mounting rails has a slide track, and the two ends of the movable link are slidably disposed on the slide tracks via rolling members.
3. The electrical pod adjuster of claim 2, wherein the track is made of plastic.
4. The electric air guide sleeve adjusting device for the truck as claimed in claim 2, wherein a limiting edge is further provided at a side portion of the slide way, and a limiting waist-shaped groove for passing through two ends of the movable connecting rod is provided at the limiting edge.
5. The electrical adjustment device for the air guide sleeve of the truck as claimed in claim 1, comprising a linkage rod, wherein two ends of the linkage rod are respectively connected with the other ends of the pair of support rods.
6. The electrical adjustment device for a truck pod of claim 1, wherein when the driving end of the driving device is moved to the maximum opening angle position of the pod, the force applied to the pair of support rods is transmitted to the pair of mounting rails and the pair of support rods, and the driving device is not applied.
7. The electrical adjustment device for the air guide sleeve of the truck as claimed in claim 1, wherein the driving device comprises a base and a motor disposed on the base, an output end of the motor is connected to one end of a lead screw, a lead screw nut is disposed on the lead screw, and the other end of the lead screw nut is connected to the movable connecting rod through a connecting component.
8. The electrical pod adjuster of claim 1, wherein the pair of mounting rails are coupled to a mounting plate, and the base is secured to the mounting plate.
9. The electrical adjustment device for the air guide sleeve of the truck as claimed in claim 7, wherein an integrated controller connected with the motor is disposed in the motor housing, and the integrated controller is connected with a vehicle speed sensor, a wind speed sensor and an ultrasonic sensor mounted on the truck body to sense the driving condition of the truck and the external environment signal, so that the driving device automatically adjusts the air guide sleeve to stay at a proper angle.
10. The electrical adjustment device for the air guide sleeve of the truck as claimed in claim 9, wherein the motor casing is provided with an interface for extending a connection terminal of the integrated controller, the base is provided with a motor fixing seat, the base is provided with a thrust bearing connected with the lead screw, the connection component comprises a joint with an external thread at one end and an internal thread at the other end, the other end of the lead screw nut is provided with an external thread matched with the internal thread of the joint, the peripheries of the lead screw and the lead screw nut are provided with a corrugated pipe, one end of the corrugated pipe is hermetically connected to the base, the other end of the corrugated pipe is hermetically connected to the joint through a first nut matched with the external thread at the other end of the lead screw nut, and the external thread of the joint is connected with a second nut so as to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367579.0A CN111422263A (en) | 2020-04-30 | 2020-04-30 | Kuppe electric control device for truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367579.0A CN111422263A (en) | 2020-04-30 | 2020-04-30 | Kuppe electric control device for truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111422263A true CN111422263A (en) | 2020-07-17 |
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ID=71552122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010367579.0A Pending CN111422263A (en) | 2020-04-30 | 2020-04-30 | Kuppe electric control device for truck |
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| Country | Link |
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| CN (1) | CN111422263A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911218A (en) * | 2021-11-18 | 2022-01-11 | 中国重汽集团济南动力有限公司 | Commercial car roof air guide sleeve assembly with electrically adjustable height and lifting method thereof |
| CN115447683A (en) * | 2022-09-06 | 2022-12-09 | 一汽解放汽车有限公司 | Flow guiding device, flow guiding device control method and vehicle |
-
2020
- 2020-04-30 CN CN202010367579.0A patent/CN111422263A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911218A (en) * | 2021-11-18 | 2022-01-11 | 中国重汽集团济南动力有限公司 | Commercial car roof air guide sleeve assembly with electrically adjustable height and lifting method thereof |
| CN115447683A (en) * | 2022-09-06 | 2022-12-09 | 一汽解放汽车有限公司 | Flow guiding device, flow guiding device control method and vehicle |
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