A kind of rotary top baggage carrier configuration
Technical field
The present invention relates to vehicle technology field, relate in particular to a kind of rotary top baggage carrier configuration.
Background technology
Top luggage rail is to be installed on roof for the equipment of placing articles, is generally used for carrying being variously placed on the article in car because of size or shape inconvenience.At present, the top luggage rail of manned vehicle generally adopts fixed type design, top luggage rail be arranged on can not rotate after roof or, can not hide, this fixed type top luggage rail is because of the medium-and-large-sized vehicles such as commercial vehicle, cross-country car, SUV that are usually used in simple in structure.Although fixed type top luggage rail is simple in structure, be easy to design and installation, but while not needing to use top luggage rail when driving, this top luggage rail is because being exposed at outward on vehicle body ceiling, thereby increased the wind area of vehicle body, thereby increased the air resistance coefficient of vehicle body, caused the increase of driving oil consumption; In addition, under high vehicle speeds operating mode, fixed type top luggage rail and air-flow high-speed friction produce larger noise, thereby affect car load travelling comfort.
China Patent Publication No. CN1102717756A, open day is on October 10th, 2012, name is called in the scheme of " a kind of top luggage rail " and discloses a kind of top luggage rail, comprise the longeron that is positioned at vehicle roof both sides, between longeron, be provided with crossbeam, the both ends of the surface of crossbeam are extended with respectively movable lock pin, the relative longeron side of movable lock pin is provided with the lockhole of movable lock pin described in clamping, and movable lock pin is provided with and makes described movable lock pin retraction depart from the lockable mechanism of the movable lock pin of locking after described lockhole.Weak point is, this top luggage rail, and when not needing to use top luggage rail, this top luggage rail is because being exposed at outward on vehicle body ceiling, thereby increased the wind area of vehicle body, thereby increased the air resistance coefficient of vehicle body, causes the increase of driving oil consumption; And under high vehicle speeds operating mode, top luggage rail and air-flow high-speed friction produce larger noise, thereby affect the traveling comfort that passenger inside the vehicle takes.
Summary of the invention
The present invention is in order to solve existing top luggage rail, when not needing to use top luggage rail, because top luggage rail is exposed on vehicle body ceiling, has increased the wind area of vehicle body outward, thereby has increased the air resistance coefficient of vehicle body, causes the increase of driving oil consumption; And, under high vehicle speeds operating mode, top luggage rail and air-flow high-speed friction produce larger noise, thereby affect these deficiencies of the traveling comfort that passenger inside the vehicle takes, a kind of rotary top baggage carrier configuration is provided, this top luggage rail device is not when needing to use top luggage rail, top luggage rail can be hidden in vehicle body ceiling, the resistance of isolated top luggage rail and air, avoid top luggage rail and air-flow high-speed friction to produce larger noise, and then reduce driving consumption of fuel and improve comfort level by bus.
To achieve these goals, the present invention is by the following technical solutions:
A kind of rotary top baggage carrier configuration, comprise: the square lock pin bar in the square lock pin Gan He of front end rear end, on vehicle body ceiling, be provided with two long recess parallel to each other, on the inner bottom surface of each long recess, from long recess end to end, be installed with successively front permanent seat, front guide base, the middle pedestal of controlling, rear guide base and rear permanent seat, and front permanent seat, front guide base, the middle pedestal of controlling, the height of rear guide base and rear permanent seat is all less than the degree of depth of long recess, the circular blind hole of the circular blind hole of pedestal and rear pedestal before the front permanent seat medial surface center relative with rear permanent seat is respectively equipped with, pedestal square opening and rear pedestal square opening before the center of the circular blind hole of front pedestal and the circular blind hole of rear pedestal bottom is respectively equipped with, the support rail that also comprises two fixing luggages, the two ends of every support rail are towards same lateral buckling, and the support rail end of the front bending segment forming afterwards in bending and rear bending segment respectively level be fixedly connected with front support rotating shaft and rear support rotating shaft, and along the axis of front support rotating shaft and rear support rotating shaft, be axially arranged with cross bar anti-rotation front end square opening and cross bar anti-rotation rear end square opening respectively, and front support rotating shaft and rear support rotating shaft are mated with the circular blind hole of front pedestal and the circular blind hole of rear pedestal respectively, and front support rotating shaft and rear support rotating shaft are rotatably connected on respectively in the circular blind hole of front pedestal and in the circular blind hole of rear pedestal, on front guide base and rear guide base, be respectively equipped with leading to square through hole and rear guiding square through hole, the axis of described front pedestal square opening, the axis of the circular blind hole of front pedestal, the axis of cross bar anti-rotation front end square opening, the leading axis to square through hole, the axis of rear pedestal square opening, the axis of the circular blind hole of rear pedestal, the axis of cross bar anti-rotation rear end square opening and the axis of rear guiding square through hole overlap, and front pedestal square opening, cross bar anti-rotation front end square opening and the leading size to square through hole are mated with the square lock pin bar of front end, rear pedestal square opening, the size of cross bar anti-rotation rear end square opening and rear guiding square through hole is mated with the square lock pin bar in rear end, the square lock pin bar of front end is through in front pedestal square opening successively, in cross bar anti-rotation front end square opening and leading to the square lock pin bar in square through hole Nei, rear end be through successively in rear pedestal square opening, in the square opening of cross bar anti-rotation rear end and in rear guiding square through hole, in centre, control on pedestal and be provided with pulling mechanism, on the square lock pin bar of front end that a tie rod of described pulling mechanism is fixedly connected on front this end of guide base, No. two tie rods of described pulling mechanism are fixedly connected on the square lock pin bar in rear guide base Zhe Duan rear end.
This programme is designed to rotatable form by top luggage rail, when not using top luggage rail, baggage rack is rotated to the long recess of vehicle body ceiling, realizes hiding of baggage rack; While using top luggage rail as need, top luggage rail rotation, to use location, is realized to the quick use of baggage rack.The top luggage rail device of this programme is not when needing to use top luggage rail, top luggage rail can be hidden in vehicle body ceiling, the resistance of isolated top luggage rail and air, avoid top luggage rail and air-flow high-speed friction to produce larger noise, and then reduce driving consumption of fuel and improve comfort level by bus.
As preferably, described pulling mechanism also comprises rotor wheel, in a side of a tie rod and No. two tie rods, be all respectively equipped with some tie rod toothrows straight down, in centre, control the center on pedestal top, the axis of controlling pedestal along centre is provided with control blind hole straight down, the sustained height place, side that controls pedestal in centre is respectively equipped with a horizontal through hole and No. two horizontal through hole that are parallel to each other, and a horizontal through hole and No. two horizontal through hole are all through control blind hole; In controlling blind hole, be provided with rotor wheel, and on the outer wall of rotor wheel, be provided with rotor wheel toothrow straight down, a tie rod and No. two tie rods are through respectively in a horizontal through hole and No. two horizontal through hole, and the tie rod toothrow of a tie rod and No. two tie rods facing to rotor wheel, and allow the tie rod toothrow of a tie rod and No. two tie rods and rotor wheel toothrow be interlocked, on rotor wheel, be provided with regulating handle.Because tie rod toothrow and rotor wheel toothrow are tightly interlocked, when rotating rotor wheel with regulating handle, a tie rod and No. two tie rods can move to front-rear direction respectively under the drive of rotor wheel, tie rod just the square lock pin bar of front end toward post-tensioning, No. two the square lock pin bar in tie rod Jiu Ba rear end draws forward, the result one in front and one in back pulling, the one, the square lock pin Gan of front end one end is pulled out in pedestal square opening and cross bar anti-rotation front end square opening successively in the past, square lock pin Gan one end, Er Shiba rear end pulls out successively from rear pedestal square opening and cross bar anti-rotation rear end square opening, and now support rail just can freely rotate.If initial top luggage rail is opened, after can rotating, support rail is hidden in the long recess of vehicle body ceiling and is gone; If initial top luggage rail is hidden, can rotate top luggage rail, opening after support rail upset, realizing top luggage rail is normal use.Easy to use.
As preferably, in the square lock pin bar of front end one end to after pedestal square opening before being deep into time, on the square lock pin bar of front end of this section between front support rotating shaft and front guide base, be provided with return block, and be arranged with pull back spring on the square lock pin bar of front end of return block and front this section of guide base, at pull back spring during in compressive state, together with return block abuts against with front support rotating shaft; In square lock pin bar one end, rear end to after pedestal square opening after being deep into time, between rear support rotating shaft and rear guide base, on the square lock pin bar in Zhe Duan rear end, be provided with also return block, and be also arranged with pull back spring on the square lock pin bar of return block and rear guide base Zhe Duan rear end, at pull back spring during in compressive state, together with return block abuts against with rear support rotating shaft.Return block can stop the square lock pin bar landing of the square lock pin Gan He of front end rear end, and pull back spring can be good at allowing and tightly pin support rail after the square lock pin bar return of the square lock pin Gan He of front end rear end and do not rotate, simple and easy to use.
As preferably, in centre, to control on pedestal and be also provided with flexible motor and controller, the flexible rotating shaft of motor is connected with the rotating shaft of rotor wheel, and rotor wheel can rotate under the drive of the machine shaft that stretches, and the control end of the motor that stretches is connected with controller; In the front permanent seat of front support rotating shaft one side, be provided with upset motor, on the rotating shaft lateral wall of upset motor, be provided with upset machine shaft toothrow, on the outer wall of front support rotating shaft, be provided with strut bar and rotate toothrow, and upset machine shaft toothrow and strut bar rotate toothrow and be interlocked, and the control end of upset motor is connected with controller.The reasonable combination of upset motor, flexible motor and controller with coordinate, can improve the automation switching level of rotary top baggage carrier configuration, alleviate user and use the working strength that regulates top luggage rail support rail, improve the automatization level of rotary top baggage carrier configuration.
As preferably, in the outside of front permanent seat and rear permanent seat, be provided with anti-rotation stopper, and on anti-rotation stopper, be provided with contact pickup No. one, a described contact pickup is connected with controller; On support rail medial surface, be provided with hiding hole, be provided with contact pickup No. two, and be fixed with projection in hiding hole in the long recess inner bottom part long recess corresponding with hiding hole, described No. two contact pickups are connected with controller.Contact pickup, anti-rotation stopper, No. two contact pickups and projection can improve the reliability of top luggage rail device.Only have when a contact pickup detects support rail and is pressed on anti-rotation stopper, just determine that support rail opens really completely, otherwise support rail do not open completely, improve controller and support rail is opened to the judgement of effect; Only have when No. two contact pickups and bump contact, illustrate that support rail has been hidden in the long recess of vehicle body ceiling completely, otherwise be not just hidden in completely in the long recess of vehicle body ceiling, improve the judgement of controller to support rail concealment effect, reduce erroneous judgement.
As preferably, on strut bar outer wall, be fixedly connected with long recess upset cover plate, the long recess upset size of cover plate mate with the opening of long recess, and long recess overturns cover plate when No. two contact pickups and bump contact, and long recess overturns cover plate enclosing cover on the opening of long recess.When top luggage rail is stashed, owing to also having a groove, with long recess, overturn cover plate tight the building of long recess, and long recess upset cover plate is consistent with the curve of vehicle body ceiling, can greatly reduce like this resistance of wind to vehicle body, can not send the sound of gas current friction, passenger's ride quality is high.
As preferably, on the inside face of long recess upset cover plate, be provided with reinforced rib, on the opening inwall of long recess, be provided with Elastic plastic-rubber.Elastic plastic-rubber makes long recess upset cover plate cover comparatively tightly, and reinforced rib has strengthened the intensity of long recess upset cover plate, allows long recess upset cover plate be difficult for distortion, and is difficult for sending the sound.
The present invention can reach following effect:
1, this invention is designed to rotatable pattern by top luggage rail, baggage rack is rotated to vehicle body ceiling long recess, and be fixed with fixed mechanism while not using baggage rack, realizes hiding of baggage rack; While using baggage rack as need, baggage rack rotation is fixed on to use location by fixed mechanism by baggage rack to use location, realizes the quick use of baggage rack.
2 top luggage rail devices of the present invention are not when needing to use top luggage rail, top luggage rail can be hidden in vehicle body ceiling, the resistance of isolated top luggage rail and air, avoid top luggage rail and air-flow high-speed friction to produce larger noise, and then reduce driving consumption of fuel and improve comfort level by bus.
3, this rotary top baggage carrier configuration mechanical characteristics and environmental stability are good, easy to use, and preparation technology is simple, and compact conformation is with low cost.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of circuit connection diagram of the present invention.
Fig. 3 is that the present invention is hidden in a kind of status architecture schematic diagram in vehicle body ceiling long recess.
Fig. 4 is a kind of status architecture schematic diagram covering on the basis of Fig. 3 after long recess upset cover plate.
In figure: front permanent seat (1), front support rotating shaft (2), return block (3), pull back spring (4), front guide base (5), the square lock pin bar of front end (6), tie rod toothrow (7), a tie rod (8), the middle pedestal (9) of controlling, No. two tie rods (10), the square lock pin bar in rear end (11), rear guide base (12), rear support rotating shaft (13), rear permanent seat (14), anti-rotation stopper (15), front bending segment (16), hide hole (17), support rail (18), regulating handle (19), rear bending segment (20), vehicle body ceiling (21), long recess (22), long recess upset cover plate (23), upset motor (24), flexible motor (25), controller (26), a contact pickup (27), No. two contact pickups (28).
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of rotary top baggage carrier configuration, shown in Fig. 1, Fig. 3, comprising: the square lock pin bar 11 of the square lock pin bar 6 of front end and rear end.On vehicle body ceiling 21, be provided with two long recess parallel to each other 22, on the inner bottom surface of each long recess, from long recess end to end, be installed with successively front permanent seat 1, front guide base 5, the middle pedestal 9 of controlling, rear guide base 12 and rear permanent seat 14, and front permanent seat, front guide base, the middle pedestal of controlling, the height of rear guide base and rear permanent seat is all less than the degree of depth of long recess.A corner in long recess bottom is provided with a drain gutter, and drain gutter is connected to outside vehicle body by a drain hose.Drain gutter can discharge the water in long recess, keeps the clean hygiene in long recess.The circular blind hole of the circular blind hole of pedestal and rear pedestal before the front permanent seat medial surface center relative with rear permanent seat is respectively equipped with, pedestal square opening and rear pedestal square opening before the center of the circular blind hole of front pedestal and the circular blind hole of rear pedestal bottom is respectively equipped with.The circular blind hole of the circular blind hole of front pedestal and rear pedestal is convenient to support rail rotation, and front pedestal square opening and rear pedestal square opening can stop the square lock pin bar in square lock pin Gan He rear end, front and back end to rotate, and anti-rotation effect is better.The support rail 18 that also comprises two fixing luggages, the two ends of every support rail are towards same lateral buckling, and the support rail end of the front bending segment 16 forming afterwards in bending and rear bending segment 20 respectively level be fixedly connected with front support rotating shaft 2 and rear support rotating shaft 13, and along the axis of front support rotating shaft and rear support rotating shaft, be axially arranged with cross bar anti-rotation front end square opening and cross bar anti-rotation rear end square opening respectively, and front support rotating shaft and rear support rotating shaft are mated with the circular blind hole of front pedestal and the circular blind hole of rear pedestal respectively, and front support rotating shaft and rear support rotating shaft are rotatably connected on respectively in the circular blind hole of front pedestal and in the circular blind hole of rear pedestal.On front guide base and rear guide base, be respectively equipped with leading to square through hole and rear guiding square through hole.The axis of front pedestal square opening, the axis of the circular blind hole of front pedestal, the axis of cross bar anti-rotation front end square opening, the leading axis to square through hole, the axis of rear pedestal square opening, the axis of the circular blind hole of rear pedestal, the axis of cross bar anti-rotation rear end square opening and the axis of rear guiding square through hole overlap, and front pedestal square opening, cross bar anti-rotation front end square opening and the leading size to square through hole are mated with the square lock pin bar of front end, rear pedestal square opening, the size of cross bar anti-rotation rear end square opening and rear guiding square through hole is mated with the square lock pin bar in rear end.The square lock pin bar of front end is through in front pedestal square opening successively, in cross bar anti-rotation front end square opening and leading to the square lock pin bar in square through hole Nei, rear end be through successively in rear pedestal square opening, in the square opening of cross bar anti-rotation rear end and in rear guiding square through hole.In centre, control on pedestal and be provided with pulling mechanism, on the square lock pin bar of front end that a tie rod 8 of pulling mechanism is fixedly connected on front this end of guide base, No. two tie rods 10 of pulling mechanism are fixedly connected on the square lock pin bar in rear guide base Zhe Duan rear end.Pulling mechanism also comprises rotor wheel, in a side of a tie rod and No. two tie rods, be all respectively equipped with some tie rod toothrows 7 straight down, in centre, control the center on pedestal top, the axis of controlling pedestal along centre is provided with control blind hole straight down, the sustained height place, side that controls pedestal in centre is respectively equipped with a horizontal through hole and No. two horizontal through hole that are parallel to each other, and a horizontal through hole and No. two horizontal through hole are all through control blind hole; In controlling blind hole, be provided with rotor wheel, and on the outer wall of rotor wheel, be provided with rotor wheel toothrow straight down, a tie rod and No. two tie rods are through respectively in a horizontal through hole and No. two horizontal through hole, and the tie rod toothrow of a tie rod and No. two tie rods facing to rotor wheel, and allow the tie rod toothrow of a tie rod and No. two tie rods and rotor wheel toothrow be interlocked, on rotor wheel, be provided with regulating handle 19.In the square lock pin bar of front end one end to after pedestal square opening before being deep into time, on the square lock pin bar of front end of this section between front support rotating shaft and front guide base, be provided with return block 3, and be arranged with pull back spring 4 on the square lock pin bar of front end of return block and front this section of guide base, at pull back spring during in compressive state, together with return block abuts against with front support rotating shaft; In square lock pin bar one end, rear end to after pedestal square opening after being deep into time, between rear support rotating shaft and rear guide base, on the square lock pin bar in Zhe Duan rear end, be provided with also return block, and be also arranged with pull back spring on the square lock pin bar of return block and rear guide base Zhe Duan rear end, at pull back spring during in compressive state, together with return block abuts against with rear support rotating shaft.Return block can stop the square lock pin bar landing of the square lock pin Gan He of front end rear end, and pull back spring can be good at allowing and tightly pin support rail after the square lock pin bar return of the square lock pin Gan He of front end rear end and do not rotate, simple and easy to use.
Shown in Figure 2, be also provided with flexible motor 25 and controller 26 on controlling pedestal in centre, the flexible rotating shaft of motor is connected with the rotating shaft of rotor wheel, and rotor wheel can rotate under the drive of the machine shaft that stretches, and the control end of the motor that stretches is connected with controller; In the front permanent seat of front support rotating shaft one side, be provided with upset motor 24, on the rotating shaft lateral wall of upset motor, be provided with upset machine shaft toothrow, on the outer wall of front support rotating shaft, be provided with strut bar and rotate toothrow, and upset machine shaft toothrow and strut bar rotate toothrow and be interlocked, and the control end of upset motor is connected with controller.In the outside of front permanent seat and rear permanent seat, be provided with anti-rotation stopper 15, and on anti-rotation stopper, be provided with 27, numbers contact pickups of a contact pickup and be connected with controller; On support rail medial surface, be provided with and hide hole 17, be provided with contact pickup 28 No. two, and be fixed with projection in hiding hole in the long recess inner bottom part long recess corresponding with hiding hole, No. two contact pickup is connected with controller.The control button of top luggage rail device is arranged on bridge instrumentation dish.The reasonable combination of upset motor, flexible motor and controller with coordinate, can improve the automation switching level of rotary top baggage carrier configuration, alleviate user and use the working strength that regulates top luggage rail support rail, improve the automatization level of rotary top baggage carrier configuration.Contact pickup, anti-rotation stopper, No. two contact pickups and projection can improve the reliability of top luggage rail device.Only have when a contact pickup detects support rail and is pressed on anti-rotation stopper, just determine that support rail opens really completely, otherwise support rail do not open completely, improve controller and support rail is opened to the judgement of effect; Only have when No. two contact pickups and bump contact, illustrate that support rail has been hidden in the long recess of vehicle body ceiling completely, otherwise be not just hidden in completely in the long recess of vehicle body ceiling, improve the judgement of controller to support rail concealment effect, reduce erroneous judgement.
In centre, control on pedestal and be also provided with voice prompting device, and voice prompting device is connected with controller.When support rail is hidden completely or opened completely, voice prompting device sends corresponding voice message, and reminding user support rail has been opened completely or be completely hiding, simple and easy to use.
At the medial surface magnetic metal bar of support rail, the position corresponding with magnetic metal bar on support rail in long recess bottom is provided with magnet.Magnetic metal bar is located on the support rail of hiding this side of hole, and when support rail is hidden completely, magnetic metal bar, by attraction, allows support rail closely be attached on the bottom of long recess, is difficult for shake or the sound occur, and allows passenger feel by bus comfortable.
Shown in Figure 4, on strut bar outer wall, be fixedly connected with long recess upset cover plate 23, the long recess upset size of cover plate mate with the opening of long recess, and long recess overturns cover plate when No. two contact pickups and bump contact, and long recess overturns cover plate enclosing cover on the opening of long recess.When top luggage rail is stashed, owing to also having a groove, with long recess, overturn cover plate tight the building of long recess, and long recess upset cover plate is consistent with the curve of vehicle body ceiling, can greatly reduce like this resistance of wind to vehicle body, can not send the sound of gas current friction, passenger's ride quality is high.On the inside face of long recess upset cover plate, be provided with reinforced rib, on the opening inwall of long recess, be provided with Elastic plastic-rubber.Elastic plastic-rubber makes long recess upset cover plate cover comparatively tightly, and reinforced rib has strengthened the intensity of long recess upset cover plate, allows long recess upset cover plate be difficult for distortion, and is difficult for sending the sound.
In the time will using strut bar, to press top luggage rail device and open after corresponding control button, controller is in the instruction of sending forward rotation to flexible motor, and flexible motor forward rotation also drives rotor wheel forward rotation.Rotor wheel a tie rod toward post-tensioning, simultaneously, rotor wheel draws No. two tie rods forward, result just pulls out the square lock pin bar of front end one end successively in the past in pedestal square opening and cross bar anti-rotation front end square opening, square lock pin bar one end, rear end is pulled out successively from rear pedestal square opening and cross bar anti-rotation rear end square opening simultaneously, flexible motor, in hold mode, support rail can freely be rotated.Then controller sends OPEN to upset motor, and upset driven by motor support rail forward rotation, opens support rail.When strut bar is pushed down a contact pickup, upset motor is in hold mode, and No. one contact pickup is passed opened signal back to controller immediately, expression support rail is opened completely, and controller sends counter-rotational instruction can to immediately flexible motor, and flexible motor rotates backward and drive rotor wheel to rotate backward.Rotor wheel pushes away a tie rod forward, simultaneously, rotor wheel No. two tie rods toward pusher, result is just pushed into the square lock pin bar of front end one end in cross bar anti-rotation front end square opening and front pedestal square opening successively, square lock pin bar one end, rear end is pushed in cross bar anti-rotation rear end square opening and rear pedestal square opening successively simultaneously.
When not using support rail, to press top luggage rail device and hide after corresponding control button, controller is in the instruction of sending forward rotation to flexible motor, and flexible motor forward rotation also drives rotor wheel forward rotation.Rotor wheel a tie rod toward post-tensioning, simultaneously, rotor wheel draws No. two tie rods forward, result just pulls out the square lock pin bar of front end one end successively in the past in pedestal square opening and cross bar anti-rotation front end square opening, square lock pin bar one end, rear end is pulled out successively from rear pedestal square opening and cross bar anti-rotation rear end square opening simultaneously, flexible motor, in hold mode, support rail can freely be rotated.Then controller sends the instruction of cutting out to upset motor, and upset driven by motor support rail rotates backward, and after support rail is rotated, is hidden in vehicle body ceiling long recess.When No. two contact pickups and bump contact, upset motor is in hold mode, and No. one contact pickup is passed hiding signal back to controller immediately, represent that support rail is completely hiding, and controller sends counter-rotational instruction can to immediately flexible motor, and flexible motor rotates backward and drive rotor wheel to rotate backward.Rotor wheel pushes away a tie rod forward, simultaneously, rotor wheel No. two tie rods toward pusher, result is just pushed into the square lock pin bar of front end one end in cross bar anti-rotation front end square opening and front pedestal square opening successively, square lock pin bar one end, rear end is pushed in cross bar anti-rotation rear end square opening and rear pedestal square opening successively simultaneously.And when No. two contact pickups and bump contact, long recess upset cover plate is tight the building of long recess, and long recess upset cover plate is consistent with the curve of vehicle body ceiling, can greatly reduce like this resistance of wind to vehicle body, can not send the sound of gas current friction, passenger's ride quality is high.
Described by reference to the accompanying drawings embodiments of the present invention above, but not limited by above-described embodiment while realizing, those of ordinary skills can make a variety of changes within the scope of the appended claims or revise.