CN111376878A - Auxiliary brake spoiler system - Google Patents
Auxiliary brake spoiler system Download PDFInfo
- Publication number
- CN111376878A CN111376878A CN201811637643.1A CN201811637643A CN111376878A CN 111376878 A CN111376878 A CN 111376878A CN 201811637643 A CN201811637643 A CN 201811637643A CN 111376878 A CN111376878 A CN 111376878A
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- Prior art keywords
- spoiler
- motor
- auxiliary brake
- vehicle
- pivot
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- 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
- B60T1/12—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action
- B60T1/16—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action by increasing air resistance, e.g. flaps
Abstract
An auxiliary brake spoiler system arranged in an upper portion of a tailgate of a vehicle, comprising: a movable spoiler; a pivot shaft having a center axis in a vehicle lateral direction, the pivot shaft supporting a spoiler front end such that the spoiler is pivotable about the center axis relative to the tailgate; a motor; a spoiler driving mechanism disposed between the motor and the spoiler; wherein the auxiliary brake spoiler system is activated upon braking of the vehicle, wherein the motor drive via the spoiler drive mechanism drives the spoiler to pivot relative to the tailgate from the stowed position to the open position.
Description
Technical Field
The present application relates to an auxiliary brake spoiler system that assists braking of a vehicle using movement of an active spoiler.
Background
When a vehicle is running, braking is often needed. Under wet road surface conditions, such as rain and snow, the road surface friction coefficient is small, and the wheels may slip during braking, thus making it impossible to reliably reduce the vehicle speed or stop the vehicle. In the case of a vehicle equipped with an ABS system, when a certain wheel is determined to slip in braking, the braking force of the wheel is reduced or released to prevent the wheel from being locked. Therefore, when a vehicle equipped with an ABS system brakes on a slippery road surface, the braking distance required to stop the vehicle may be long.
In dangerous conditions, the vehicle is braked in a shorter braking distance, and the driving safety can be improved. Therefore, it is desirable to shorten the braking distance of the vehicle by an auxiliary measure.
Disclosure of Invention
An object of the present application is to provide an auxiliary braking device that can contribute to shortening the braking distance of a vehicle.
To this end, the present application provides in one of its aspects an auxiliary brake spoiler system for a vehicle, arranged in a rear door upper portion of the vehicle, comprising: a movable spoiler; a pivot shaft having a center axis in a vehicle lateral direction, the pivot shaft supporting a spoiler front end such that the spoiler is pivotable about the center axis relative to the tailgate; a motor; a spoiler driving mechanism disposed between the motor and the spoiler; wherein the auxiliary brake spoiler system is activated upon braking of the vehicle, wherein the motor drive via the spoiler drive mechanism drives the spoiler to pivot relative to the tailgate from the stowed position to the open position.
According to one possible embodiment, the auxiliary brake spoiler system is activated during emergency braking of the vehicle.
According to one possible embodiment, the auxiliary brake spoiler system is activated when the anti-lock brake system of the vehicle is activated.
According to one possible embodiment, the spoiler comprises an outer panel and an inner panel assembled together, the outer panel conforming to the contour of the upper part of the tailgate, the inner panel providing the spoiler with the required aerodynamic properties.
According to one possible embodiment, the spoiler is formed with reinforcing ribs, the upper edges of which abut against the outer panel in order to provide structural strength to the entire spoiler.
According to a possible embodiment, the pivot is fixedly mounted at the front end of the spoiler and is rotatable relative to the tailgate; the spoiler driving mechanism is connected between a motor shaft of the motor and the pivot shaft and is configured to drive the pivot shaft to pivot with the spoiler when the motor is started.
According to a possible embodiment, the pivot is fixedly mounted at the front end of the spoiler and is rotatable relative to the tailgate; or the pivot is fixedly arranged on the tail gate and supports the front end of the spoiler, and the spoiler can rotate around the pivot; the spoiler driving mechanism is connected between a motor shaft of the motor and the spoiler and configured to drive the spoiler to pivot when the motor is activated.
According to a possible embodiment, the spoiler drive mechanism comprises any one or more of the following elements: gears, worm-gears, cams, links, crank blocks, chain-sprockets, belt-pulleys, or combinations thereof.
According to one possible embodiment, the opening angle of the spoiler is determined on the basis of the vehicle braking situation and adjusted in real time when the auxiliary brake spoiler system is activated.
According to one possible embodiment, the electric motor is arranged in the upper dry zone of the tailgate.
According to one possible embodiment, the motor is arranged in a motor compartment in the upper part of the tailgate, which motor compartment is formed by a sealing plate and a groove-forming plate, with a seal being provided between the sealing plate and the groove-forming plate.
According to a possible embodiment, the lower part of the plate forming the groove is provided with a drainage hole.
According to the present application, in a vehicle braking, particularly an emergency braking, or in a situation where the ABS system is activated during braking, the movable spoiler is activated to increase the air drag resistance of the vehicle, thereby reducing the braking distance of the vehicle.
Drawings
Fig. 1 is a schematic view of an auxiliary brake spoiler system according to an embodiment of the present application in a fixed state.
FIG. 2 is a schematic view of the auxiliary brake spoiler system in an activated state.
FIG. 3 is a schematic view of an active spoiler in the auxiliary brake spoiler system.
Fig. 4-7 are schematic illustrations of possible embodiments of some of the spoiler drive mechanisms in the auxiliary brake spoiler system.
Detailed Description
The following figures describe some possible embodiments of the present application.
The present application relates generally to an auxiliary brake spoiler system that activates an active spoiler under some braking conditions to implement auxiliary braking.
Fig. 1 shows an auxiliary brake spoiler system in a fixed (standby) state according to one possible embodiment of the present application. This spoiler system sets up in 1 upper portions of vehicle tail-gate, mainly includes: a movable spoiler 2 pivotable relative to the tailgate 1 about a center axis of a pivot shaft 3, the center axis being oriented in a vehicle lateral direction; a motor 4; and a spoiler driving mechanism 5 driven by the motor 4 for driving the spoiler 2 to pivot with respect to the tailgate 1.
The motor 4 is arranged in a motor compartment 10 enclosed by the sealing plate 6 and the grooved plate 7. The motor compartment 10 is substantially waterproof to avoid water encroachment on the motor 4. For this purpose, a motor compartment 10 is provided in the dry zone of the upper part of the tailgate 1. Moreover, a sealing strip is also arranged between the sealing plate 6 and the plate 7. Further, a drain hole may be opened in a lower portion of the plate 7 so that water entering the motor compartment 10 for any reason is drained out of the motor compartment 10.
The motor shaft 20 of the motor 4 extends through the plate 7 to the outside of the motor compartment 10. A sealing element is also provided between the motor shaft 20 and the plate 7.
The spoiler drive mechanism 5 is connected on the one hand to the motor shaft 20 and on the other hand to the spoiler 2 or the pivot shaft 3, so that the spoiler 2 can be driven to pivot about the central axis of the pivot shaft 3 by the spoiler drive mechanism 5 when the motor 4 is rotated. The spoiler drive mechanism 5 may have various forms, indicated in fig. 1 by dashed lines.
The pivot 3 is provided at the front end of the spoiler 2, preferably at a position above the front end of the spoiler. The pivot 3 is carried by the tailgate 1. Typically, one pivot shaft 3 is provided at each lateral side of the front end of the spoiler 2. The pivot 3 may be fixed to the tailgate 1 or may be fixed to the spoiler 2 so as to be rotatable with the spoiler 2.
The auxiliary brake spoiler system is controlled by the vehicle brake system, e.g. by a control unit of the vehicle brake system. When the vehicle is normally running, the spoiler 2 is housed in the upper portion of the tailgate 1 as shown in fig. 1. When the vehicle brake system brakes the vehicle, the auxiliary brake spoiler system is activated, if necessary. Specifically, the vehicle brake system signals activation of the auxiliary brake spoiler system, and the motor 4 rotates to drive the spoiler 2 to pivot upward about the central axis of the pivot shaft 3 by the spoiler drive mechanism 5. Thus, the spoiler 2 pivots upwardly from a stowed position in the upper portion of the tailgate 1 shown in FIG. 1 to an open position relative to the tailgate 1 shown in FIG. 2. The activated state of the auxiliary brake spoiler system is shown in fig. 2. The pivot angle (opening angle) of the spoiler 2 is determined by the vehicle brake system based on the vehicle braking state, and can be adjusted in real time. After the braking operation is completed, the vehicle brake system commands the motor 4 to rotate in reverse to pivot the spoiler 2 back down about the central axis of the pivot shaft 3 to the stowed position shown in fig. 1 by the spoiler drive mechanism 5.
The auxiliary brake spoiler system may be activated during an emergency braking condition of the vehicle. The vehicle brake system can determine the stroke and speed of the brake pedal by using the detection signal of the brake pedal position sensor, thereby judging the braking intention of the driven. If it is found that the driver depresses the brake pedal sharply, it is considered that the driver intends to apply the emergency braking, the vehicle brake system activates the auxiliary brake spoiler system to open the spoiler 2 to increase the frontal area of the vehicle to increase the air drag resistance of the vehicle, thereby reducing the braking distance of the vehicle.
For vehicles equipped with an ABS (anti-lock braking) system, the auxiliary brake spoiler system may be activated in an emergency braking state of the vehicle and/or activated when the ABS system is activated. Therefore, the braking distance of the vehicle can be reduced, and the stability of the vehicle body in the braking of the vehicle can be improved. For vehicles equipped with an ABS system, the auxiliary brake spoiler system may be controlled by the ABS system, or by a combination of the vehicle brake system and the ABS system.
The spoiler 2 may have a substantially wing shape and may be assembled from plates. For example, in the example shown in fig. 3, the spoiler 2 is constituted by combining the outer panel 11 and the inner panel 12. The outer panel 11 conforms to the general contour of the upper portion of the tailgate 1 and may therefore be substantially flat or slightly curved. The inner panel 12 provides the spoiler 2 with the required aerodynamic properties. The inner plate member 12 defines therein an inner groove which is deep in front and gradually becomes shallow toward the distal end 2a of the spoiler 2. The upper edge of the inner panel 12 is secured to the outer panel 11 with a seal 13 therebetween. The groove bottom of the inner plate 12 may be formed at a longitudinally middle portion with a raised reinforcing rib 14, the upper edge of which abuts against the outer plate 11, to provide structural strength to the entire spoiler 2. The pivot shaft 3 carries the spoiler 2 at the front end of the spoiler 2 (particularly, the inner panel 12), and preferably carries the spoiler 2 at the upper portion of the front end of the spoiler 2 (particularly, the inner panel 12).
Depending on the spoiler drive mechanism, the pivot 3 can be fixed on the spoiler 2 and can be rotated together with the spoiler 2 relative to the tailgate 1. Alternatively, the pivot shaft 3 may be fixed to the tailgate 1, and the spoiler 2 may be rotatable about the pivot shaft 3.
Some possible solutions of the spoiler drive mechanism are described below.
The spoiler drive mechanism may be gear based. In one possible embodiment, as shown in fig. 4, the spoiler drive mechanism comprises a drive rod 21 with a bevel gear 22 at one end of the drive rod 21 and a bevel gear 23 at the other end. The motor shaft 20 is provided with a bevel gear 24 engaged with the bevel gear 22, and the pivot shaft 3 is provided with a bevel gear 25 engaged with the bevel gear 23. The pivot 3 is fixed to the front end of the spoiler 2. Thus, the rotation of the motor 4 is transmitted to the pivot shaft 3 through the bevel gears, so that the spoiler 2 can be driven to rotate about the central axis of the pivot shaft 3. The bevel gear 22 has a reference circle diameter larger than that of the bevel gear 24, and the bevel gear 25 has a reference circle diameter larger than that of the bevel gear 23, so that the rotation of the motor shaft 20 is transmitted to the pivot shaft 3 at a reduced speed.
The spoiler drive mechanism may also be based on a link. In one possible embodiment as shown in fig. 5, the spoiler drive mechanism comprises a cylindrical gear 26, a cylindrical gear 27, a first link 28 and a second link 29, wherein the gear 26 is mounted on the motor shaft 20, the gear 27 is engaged with the gear 26, the gear 27 is rotatable about a fixed central axis, the first link 28 has one end fixed to the gear 27 and the other end connected to a first end of the second link 29 by a rotating hinge 30, and a second end of the second link 29 supports the inner panel 12 of the spoiler 2 (particularly, supports the middle or rear portion of the inner panel 12) by a rotating hinge 31. The pivot 3 can be fixed at the front end of the spoiler 2; alternatively, the pivot 3 is fixed to the tailgate and the spoiler 2 is rotatable about the pivot 3. The rotation of the motor 4 is transmitted to the first link 28 through the gears 26, 27, and the first link 28 drives the second link 29 to rotate and move about the hinge 30, so that the second link 29 drives the spoiler 2 to rotate about the central axis of the pivot shaft 3 through the hinge 31. The gear 27 has a reference circle diameter larger than that of the gear 26 so that the rotation of the motor 4 is transmitted to the first link 28 at a reduced speed. Furthermore, by designing the rod lengths of the first link 28 and the second link 29, the mounting positions of both with respect to the gear 27 and the spoiler 2, a desired ratio between the rotational speed of the spoiler 2 about the axis of the pivot shaft 3 and the rotational speed of the motor 4 can be achieved.
The spoiler drive mechanism may also be based on a rack. In one possible embodiment as shown in fig. 6, the spoiler drive mechanism comprises a cylindrical gear 26, a cylindrical gear 27, a cylindrical gear 32, and a rack 33, wherein the cylindrical gear 26 is mounted on the motor shaft 20, the gear 27 is engaged with the gear 26, the gear 32 is coaxially fixed with the gear 27, the gears 27 and 32 are rotatable about a fixed central axis, the gear 32 is engaged with the rack 33, and the end of the rack 33 supports the inner panel member 12 of the spoiler 2 (particularly, the middle or rear portion of the inner panel member 12) by a rotating hinge 34. The pivot 3 can be fixed at the front end of the spoiler 2; alternatively, the pivot 3 is fixed to the tailgate and the spoiler 2 is rotatable about the pivot 3. Furthermore, a stop means 35 may be provided for keeping the rack 33 in engagement with the gear wheel 32. The rotation of the motor 4 is transmitted to the gear 32 through the gears 26 and 27, the gear 32 drives the rack 33 to move, and the rack 33 drives the spoiler 2 to rotate around the central axis of the pivot shaft 3 through the hinge 34. The gear 27 has a larger pitch circle diameter than the gear 26 so that the rotation of the motor 4 is transmitted to the gear 32 at a reduced speed. Furthermore, by designing the mounting position of the rack 33 with respect to the gear 32 and the spoiler 2, a desired ratio between the rotational speed of the spoiler 2 about the axis of the pivot shaft 3 and the rotational speed of the motor 4 can be achieved.
The spoiler drive mechanism may also be based on chain-sprockets. In one possible embodiment as shown in fig. 7, the spoiler drive mechanism includes a cylindrical gear 26, a cylindrical gear 27, a first sprocket 36, a second sprocket 37, and a chain 38, wherein the cylindrical gear 26 is mounted on the motor shaft 20, the gear 27 is engaged with the gear 26, the first sprocket 36 is coaxially fixed with the gear 27, the gear 27 and the first sprocket 36 are rotatable about a fixed central axis, the second sprocket 37 is coaxially fixed with the pivot shaft 3, the pivot shaft 3 is fixedly mounted at the front end of the spoiler 2, and the chain 38 is wound around the first sprocket 36 and the second sprocket 37. The pitch circle diameter of the gear 27 is larger than that of the gear 26, and the rotation of the motor 4 is transmitted to the first chain wheel 36 in a decelerating manner and then transmitted to the pivot shaft 3 through the chain 38 and the second chain wheel 37, so that the spoiler 2 can be driven to rotate around the central axis of the pivot shaft 3.
It will be appreciated that in a possible embodiment shown in fig. 7, the chain-sprocket mechanism may be replaced by a belt-pulley mechanism, including a toothed belt-pulley mechanism.
It will be appreciated that a wide variety of spoiler drive mechanisms may be devised by those skilled in the art. For example, the spoiler drive mechanism may comprise various forms of gears, worm gears, cams, links, crank blocks, chain-sprockets, belt-pulleys, or combinations thereof, for example, provided that the spoiler drive mechanism can be arranged in the upper portion of the tailgate 1 and that the desired transmission ratio between the motor 4 and the spoiler 2 can be achieved.
It will be appreciated that only one motor 4 and a corresponding set of spoiler drive mechanisms 5 may be provided in the auxiliary brake spoiler system; if necessary, a motor 4 and a corresponding spoiler drive 5 can be provided on each of the lateral sides.
In a vehicle equipped with the auxiliary brake spoiler system of the present application, the auxiliary brake spoiler system is activated to increase air drag resistance of the vehicle when the vehicle is braking, particularly in emergency braking and/or when the ABS system is activated, thereby reducing the braking distance of the vehicle and improving the braking safety of the vehicle.
In addition, by analyzing the state of the vehicle in braking and performing aerodynamic optimization design on the contour of the spoiler 2, particularly the inner panel 12, the stability of the vehicle body in braking of the vehicle can be improved, so that adverse phenomena such as yaw of the vehicle body are inhibited when wheels slip in braking of the vehicle, and the safety of braking of the vehicle is further improved.
Furthermore, when the auxiliary brake spoiler system is activated, the opening angle of the spoiler 2 can be determined according to the actual braking conditions of the vehicle to achieve an optimal vehicle braking process.
In addition, a reduction gear element, such as the gear set described above, is typically included in the spoiler drive mechanism 5. In order to achieve the desired transmission ratio between the motor 4 and the spoiler 2, a plurality of reduction elements may be provided. Further, the motor 4 itself may be integrated with a speed reduction mechanism.
Although the present application has been described herein with reference to particular embodiments, the scope of the present application is not intended to be limited to the details shown. Various modifications may be made to these details without departing from the underlying principles of the application.
Claims (12)
1. An auxiliary brake spoiler system for a vehicle, arranged in an upper portion of a tailgate of the vehicle, comprising:
a movable spoiler;
a pivot shaft having a center axis in a vehicle lateral direction, the pivot shaft supporting a spoiler front end such that the spoiler is pivotable about the center axis relative to the tailgate;
a motor;
a spoiler driving mechanism disposed between the motor and the spoiler;
wherein the auxiliary brake spoiler system is activated upon braking of the vehicle, wherein the motor drive via the spoiler drive mechanism drives the spoiler to pivot relative to the tailgate from the stowed position to the open position.
2. The auxiliary brake spoiler system according to claim 1, wherein the auxiliary brake spoiler system is activated upon emergency braking of the vehicle.
3. The auxiliary brake spoiler system according to claim 1 or 2, wherein the auxiliary brake spoiler system is activated upon activation of an anti-lock brake system of a vehicle.
4. The auxiliary brake spoiler system according to any one of claims 1 to 3, wherein the spoiler comprises an outer panel and an inner panel assembled together, the outer panel conforming to a contour of an upper portion of the tailgate, the inner panel providing a desired aerodynamic performance to the spoiler.
5. The auxiliary brake spoiler system according to claim 4, wherein the spoiler is formed with a reinforcing rib, an upper edge of which abuts the outer panel to provide structural strength to the entire spoiler.
6. The auxiliary brake spoiler system according to any one of claims 1 to 5, wherein the pivot is fixedly installed at a front end of the spoiler and is rotatable with respect to a tailgate;
the spoiler driving mechanism is connected between a motor shaft of the motor and the pivot shaft and is configured to drive the pivot shaft to pivot with the spoiler when the motor is started.
7. The auxiliary brake spoiler system according to any one of claims 1 to 5, wherein the pivot is fixedly installed at a front end of the spoiler and is rotatable with respect to a tailgate; or the pivot is fixedly arranged on the tail gate and supports the front end of the spoiler, and the spoiler can rotate around the pivot;
the spoiler driving mechanism is connected between a motor shaft of the motor and the spoiler and configured to drive the spoiler to pivot when the motor is activated.
8. The auxiliary brake spoiler system according to any one of claims 1 to 7, wherein the spoiler drive mechanism comprises any one or more of the following elements: gears, worm-gears, cams, links, crank blocks, chain-sprockets, belt-pulleys, or combinations thereof.
9. The auxiliary brake spoiler system according to any one of claims 1 to 8, wherein an opening angle of the spoiler is determined based on a vehicle braking condition and adjusted in real time when the auxiliary brake spoiler system is activated.
10. The auxiliary brake spoiler system according to any one of claims 1 to 9, wherein the motor is arranged in a dry area of an upper portion of the tailgate.
11. The auxiliary brake spoiler system according to any one of claims 1 to 10, wherein the motor is disposed in a motor compartment of an upper portion of the tailgate, the motor compartment being composed of a sealing plate and a groove-formed plate with a seal provided therebetween.
12. The auxiliary brake spoiler system according to claim 11, wherein a lower portion of the groove-forming plate is provided with a water discharge hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637643.1A CN111376878A (en) | 2018-12-29 | 2018-12-29 | Auxiliary brake spoiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637643.1A CN111376878A (en) | 2018-12-29 | 2018-12-29 | Auxiliary brake spoiler system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111376878A true CN111376878A (en) | 2020-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811637643.1A Pending CN111376878A (en) | 2018-12-29 | 2018-12-29 | Auxiliary brake spoiler system |
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| Country | Link |
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| CN (1) | CN111376878A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665794A (en) * | 2021-09-24 | 2021-11-19 | 肇庆市海特复合材料技术研究院 | Composite material unmanned aerial vehicle wing |
| CN114523943A (en) * | 2022-03-25 | 2022-05-24 | 江苏理工学院 | Vehicle auxiliary braking device and method thereof |
| CN114889711A (en) * | 2022-06-06 | 2022-08-12 | 蔚来汽车科技(安徽)有限公司 | Vehicle spoiler assembly and vehicle equipped with same |
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| CN107472511A (en) * | 2017-08-03 | 2017-12-15 | 北京航空航天大学 | The pneumatic rudder face of the Flying-wing's aircraft coordinated based on spoiler and trailing edge rudder face |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113665794A (en) * | 2021-09-24 | 2021-11-19 | 肇庆市海特复合材料技术研究院 | Composite material unmanned aerial vehicle wing |
| CN114523943A (en) * | 2022-03-25 | 2022-05-24 | 江苏理工学院 | Vehicle auxiliary braking device and method thereof |
| CN114889711A (en) * | 2022-06-06 | 2022-08-12 | 蔚来汽车科技(安徽)有限公司 | Vehicle spoiler assembly and vehicle equipped with same |
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