CN216301271U

CN216301271U - Three-section empennage

Info

Publication number: CN216301271U
Application number: CN202122748430.XU
Authority: CN
Inventors: 袁伟东
Original assignee: Hangzhou Weiyi Technology Development Co ltd
Current assignee: Hangzhou Weiyi Technology Development Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-15
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a three-section tail wing, which comprises first tail wings at two sides, a second tail wing in the middle, a stretching mechanism and a lifting mechanism, wherein the stretching mechanism comprises a driving assembly and a swing rod assembly; the driving assembly drives the swing rod assemblies on the two sides to drive the first tail wing to unfold towards the two sides or fold towards the middle, when the first tail wing is unfolded, the first tail wing is connected with the second tail wing, and when the first tail wing is folded, the second tail wing is positioned below the first tail wing; the driving assembly also comprises a worm gear assembly which can drive the first tail wing and the second tail wing to integrally tilt; the extension mechanism is fixedly connected with the lifting mechanism through the lifting block, and the lifting mechanism drives the first tail wing and the second tail wing to move up and down. The three-section empennage can be lifted along with the speed, the angle is automatically adjusted, the three-section type empennage is opened, the area of the empennage is further increased, the influence of wind power on a high-speed running automobile is reduced, and a better balance effect is achieved.

Description

Three-section empennage

Technical Field

The utility model relates to the technical field of automobile empennages, in particular to a three-section empennage.

Background

When the automobile runs at a high speed, according to the aerodynamic principle, air resistance can be met in the running process, air power in the longitudinal direction, the lateral direction and the vertical rising direction is generated around the gravity center of the automobile at the same time, wherein the longitudinal direction is the air resistance. In order to effectively reduce and overcome the influence of air resistance when an automobile runs at high speed, the automobile tail fin is designed and used, and has the function of enabling air to generate a fourth acting force on the automobile, namely generating larger adhesive force on the ground, and the automobile tail fin can counteract a part of lifting force, effectively control the automobile to float upwards, enable the wind resistance coefficient to be correspondingly reduced, enable the automobile to be attached to the ground of a road to run, and further improve the running stability.

When the automobile runs at a high speed, the automobile tail fin enables air resistance to form downward pressure to counteract lift force as much as possible, the downward pressure of airflow is effectively controlled, the wind resistance coefficient is correspondingly reduced, and the high-speed running stability of the automobile is improved; because the empennage can reduce the air resistance of the automobile, the installation of the empennage on the high-speed automobile also has certain help to save fuel; meanwhile, the appearance of the automobile is more attractive, and a certain decorative effect is achieved.

The existing automobile tail fin is mostly fixed, cannot be changed according to different speeds of an automobile, is small and exquisite in general in order to match the overall attractiveness of the automobile, and is small in assistance generated by automobile running and insufficient in stability when the automobile runs at a high speed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides the three-section empennage, the empennages on the two sides can be lifted up and down and unfolded left and right, the acting area of the empennage is increased, the angle of the empennage can be adjusted, and the driving stability is further improved.

Therefore, the technical scheme of the utility model is as follows: a three-section tail wing comprises first tail wings at the left side and the right side and a second tail wing positioned in the middle, wherein a stretching mechanism for driving the first tail wing to open and close and a lifting mechanism for driving the first tail wing and the second tail wing to move up and down are further arranged below the first tail wing; the stretching mechanism comprises a fixed seat, a driving assembly and a swing rod assembly, the driving assembly and the swing rod assembly are arranged in the fixed seat, the driving assembly is positioned below the second tail wing, the swing rod assembly is positioned on two sides of the driving assembly, and the first tail wing is fixed on the swing rod assembly; the driving assembly comprises a stretching motor, a transmission shaft, a fixed shaft and a worm and gear assembly, the stretching motor drives the swing rod assemblies on two sides through the transmission shaft, the first tail wing can be unfolded towards two sides or folded towards the middle, and when the first tail wing is unfolded, the first tail wing and the second tail wing are connected into a whole; when the first tail wing is folded, the second tail wing is positioned below the first tail wing; the fixed shaft is rotatably arranged on the fixed seat, the end part of the fixed shaft is fixed on the lifting block, and the lifting block penetrates through the fixed seat and is fixedly connected with the lifting mechanism; the worm and gear assembly comprises a worm and a worm wheel matched with the worm, the worm is linked with the transmission shaft, the worm wheel is fixedly installed on the fixed shaft, and the worm and gear assembly drives the first tail wing and the second tail wing to integrally incline.

The tail wing is of a three-section structure and comprises first tail wings at two sides and a second tail wing in the middle, wherein in an initial state, the first tail wing is positioned at a low position, the two sides are relatively close to each other and positioned at the tail of an automobile, and the second tail wing is positioned below the first tail wing; when the vehicle speed reaches a certain value, the screw motor starts to work, the lifting support swings, the lifting seat moves upwards, and the lifting block drives the fixing seat to move upwards integrally; meanwhile, the stretching motor starts to work, the stretching motor drives the transmission shaft to rotate through the gear, the two ends of the transmission shaft drive the swing rod assemblies, the swing rod assemblies drive the first tail wings to unfold, and the unfolded first tail wings are rotated around the rotation shaft, so that the unfolded first tail wings are just connected with the middle second tail wings to form a complete three-section tail wing, and the area of the tail wings is increased; the transmission shaft and the worm are in 90-degree steering transmission through the helical gear and can drive the worm to rotate, the worm is matched with the worm wheel and is supposed to drive the worm wheel to rotate, but the worm wheel is fixedly mounted on the fixed shaft, and the fixed shaft is fixedly mounted on the lifting block, so that under the condition that the worm wheel cannot rotate, the worm moves along the outline of the worm wheel and inclines, the fixed seat is driven to integrally incline, the rear parts of the first tail wing and the second tail wing are tilted upwards, and the resistance effect is improved. The transmission shaft synchronously drives the first tail wing to unfold and the first tail wing and the second tail wing to incline, so that the stability of the automobile in high-speed running is ensured.

Preferably, the inside of the fixed seat is divided into 3 areas by two partition plates, the middle area is provided with a driving assembly, the two side areas are respectively provided with a swing rod assembly, the second tail wing is fixed above the two partition plates, the fixed shaft and the transmission shaft are parallel to each other, and two ends of the fixed shaft are rotatably arranged on the partition plates and extend out of the partition plates to be fixedly connected with the lifting block; the worm is perpendicular to the transmission shaft and is in transmission through the helical gear, and the worm wheel work in a matched mode to drive the fixing seat to rotate around the fixing shaft.

Preferably, the stretching motor is connected with the transmission shaft through a gear, and both ends of the transmission shaft are provided with first conical gears; the swing rod assembly further comprises bottom rods, a rotating shaft, a swing rod and an installation plate, the bottom rods are installed on the fixed seat, two ends of the rotating shaft are rotatably installed on the two bottom rods, the rotating shaft is perpendicular to the transmission shaft, and a second bevel gear is fixed on the rotating shaft and meshed with the first bevel gear on the transmission shaft; one end of the swing rod is fixed on the rotating shaft, the other end of the swing rod is rotatably installed on the installation plate, and the first tail wing is fixed on the installation plate. The transmission shaft and the rotating shaft are transmitted through the conical gear, the moving direction can be changed, the rotating shaft can drive the swing rod to rotate, and the first tail wing is driven to swing outwards and open above the swing rod.

Preferably, the swing rods are divided into a group of driving swing rods and a group of driven swing rods, the driving swing rods and the driven swing rods are parallel to each other, one ends of the driving swing rods are fixedly installed on the rotating shaft, the other ends of the driving swing rods are rotatably installed on the installation plate, one ends of the driven swing rods are rotatably installed on the bottom rod, and the other ends of the driven swing rods are rotatably installed on the installation plate. Each group of driving swing rods is provided with two swing rods which are respectively positioned at two ends of the rotating shaft, in order to enable the first tail wing to be more stably unfolded, a group of driven swing rods are additionally arranged, and the driven swing rods only play a role in assisting the first tail wing to swing.

Preferably, the whole fixed seat is of a box-packed structure and comprises a bottom plate and a plurality of side plates, the side plates are fixed at the edge of the bottom plate, and the driving assembly and the swing rod assembly are both positioned in the side plates; the cover plate is arranged above the two partition plates of the fixing seat, the cover plate and the partition plates form a closed area, the driving assembly is located in the closed area, and the second tail wing is fixed above the cover plate. All transmission parts are arranged in one box body, so that the safety is higher, dust and impurities are not easy to enter, and the transmission efficiency of each component is ensured.

Preferably, elevating system includes base, lift seat, lead screw motor and lifting support, and the lift seat passes through the elevator with the fixing base to be connected, links to each other through lifting support between base and the lift seat, and lead screw motor drives the lifting support swing, adjusts the distance between base and the lift seat, drives first fin, second fin and reciprocates.

Preferably, one end of each of the lifting seat and the base is provided with a horizontally arranged guide rail, a sliding block matched with the guide rail is arranged in the guide rail, one sliding block is arranged on a motor shaft of the screw motor, the other end of each of the lifting seat and the base is provided with an installation block, two sides of each of the lifting seat are respectively provided with a group of lifting supports, each group of lifting supports comprises a first support and a second support which are arranged in a crossed manner, and the first support and the second support are rotatably connected through a pin shaft; the two ends of the first support and the two ends of the second support are respectively rotatably installed on the sliding block and the installation block, and a motor shaft of the lead screw motor is fixedly connected with the first sliding block on the lifting seat to drive the lifting support to swing around the installation block to drive the first tail wing and the second tail wing to ascend and descend.

Preferably, one end of the lifting seat is provided with a first guide rail, a first sliding block is arranged in the lifting seat, the first sliding block is fixed on a motor shaft of the screw motor and can move along the guide rail, and the other end of the lifting seat is provided with a first mounting block; one end of the base is provided with a second guide rail, a second sliding block is arranged in the base, and the other end of the base is provided with a second mounting block; one end of the first support is rotatably installed on the first sliding block, the other end of the first support is rotatably installed on the second installation block, one end of the second support is rotatably installed on the second sliding block, the other end of the second support is rotatably installed on the first installation block, and the first support and the second support are installed into an X-shaped structure through a pin shaft.

Because the tail wing is arranged in the groove of the tail of the vehicle, no redundant space is provided for the tail wing to be unfolded, the tail wing needs to move upwards first to be separated from the limit of the space of the tail of the vehicle. Lead screw motor level is placed, for telescopic motor, the motor shaft drives first slider along first guide rail horizontal migration, when first slider removes towards lead screw motor place direction, fix two first support homeopathic formations in first slider both sides and be driven, make first support rotate around second installation piece, and first support passes through the round pin hub connection with the second support, drive the second support when first support pivoted, make the second support rotate around first installation piece, push up the lift seat together, the lift seat passes through the elevator, the fixed axle drives the whole rising of fixing base, first fin begins to launch. When the first tail wing is folded, the screw motor pushes the first sliding block to reset, and the first support and the second support drive the lifting seat to descend to return to the initial position.

Preferably, the lift seat outside is equipped with the round baffle, and the baffle downwardly extending to the base outside, lead screw motor, guide rail, lifting support all are located the baffle. The baffle is arranged on the outer side of the lifting mechanism, and various transmission mechanisms of the lifting mechanism are arranged inside the baffle, so that the baffle is safe and attractive.

The three sections of the tail wings can be controlled by an automobile control system, the G value condition and the speed condition for unfolding the tail wings can be preset on an automobile control panel or a mobile phone app connected with an automobile operating system, a gyroscope arranged in an automobile can sense the actual G value of acceleration and turning, the automobile control system compares the actual G value with the preset G value, if the actual G value is greater than the preset G value, the tail wings are opened (the tail wings are lifted, unfolded and inclined), and if the actual G value is less than the preset G value, the tail wings are closed; meanwhile, if the actual running speed of the automobile is higher than the preset speed, the tail wing is opened as well.

Compared with the prior art, the utility model has the beneficial effects that: the three sections of tail wings can be lifted along with the speed, the angles are automatically adjusted, the three sections of tail wings are opened, the area of the tail wings is further increased, and the influence of wind power on a high-speed running automobile is reduced; the built-in gyroscope senses G values of acceleration and turning so as to open or close the tail wings, the maximum action of aerodynamic force and downward pressure is realized, necessary stability is provided for vehicles running at high speed, and particularly for high-power vehicles, three sections of tail wings play a better balance role when the vehicles run at high speed over a curved or complex road section.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the tail wing when not deployed;

FIG. 3 is a schematic view of the tail when deployed;

fig. 4 and 5 are schematic structural views of the stretching mechanism;

FIG. 6 is an initial state diagram of the elevating mechanism;

FIG. 7 is a view showing the operation state of the elevating mechanism;

fig. 8 is a schematic view of the installation of the present invention.

Labeled as:

a first tail fin 1, a second tail fin 2;

an extension mechanism 3;

a fixed seat 31, a bottom plate 311 and a partition 312;

an extension motor 321, a transmission shaft 322, a fixed shaft 323, a driving gear 324, a driven gear 325, a first bevel gear 326, a worm 327, a worm wheel 328, a first bevel gear 329 and a second bevel gear 330;

the swing rod assembly 33, a bottom rod 331, a rotating shaft 332, a mounting plate 333, a second bevel gear 334, a driving swing rod 335 and a driven swing rod 336;

a lifting block 34;

a lifting mechanism 4;

the base 41, the second guide rail 411, the second slider 412 and the second mounting block 413;

the lifting seat 42, the first guide rail 421, the first sliding block 422 and the first mounting block 423;

a lead screw motor 43;

the lifting bracket 44, the first bracket 441, the second bracket 442;

the tail of the vehicle 5.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the utility model, "a number" or "a number" means two or more unless explicitly specified otherwise.

See the drawings. The tail wing is of a three-section structure and comprises first tail wings 1 on the left side and the right side and a second tail wing 2 in the middle, the first tail wings are arranged at the tail 5 of the automobile, and the first tail wings are folded and attached to an accommodating groove of the tail 5 of the automobile; an extension mechanism 3 and a lifting mechanism 4 are further arranged below the tail wings, so that the first tail wings and the second tail wings can integrally ascend and are separated from the limitation of the accommodating groove, the first tail wings expand towards two sides, and meanwhile the first tail wings and the second tail wings incline and upwarp to complete the whole process of opening the tail wings.

The extension mechanism 3 comprises a fixed seat 31 which is integrally of a box-packed structure and comprises a bottom plate 311 and a plurality of side plates, the side plates are fixed on the edge of the bottom plate, the inside of the fixed seat is divided into 3 areas by two partition plates 312, a driving assembly is placed in the middle area between the two partition plates, a cover plate is arranged above the two partition plates, the cover plate and the partition plates form a closed area, the driving assembly is located in the closed area, and the second tail wing 2 is fixed above the cover plate. The areas outside the two partition boards are respectively provided with a swing rod assembly 33, and the first tail wing 1 is fixed on the swing rod assemblies 33. In an initial state, the first tail wings on the two sides are close to each other and are in a folded shape, and the second tail wing is positioned below the two first tail wings; when the first tail wing is unfolded, the first tail wing swings outwards to be opened, the second tail wing below the first tail wing is exposed, and two sides of the second tail wing are connected with the first tail wing to form a complete three-section tail wing, so that the working area of the tail wing is greatly increased.

The driving assembly comprises an extension motor 321, a transmission shaft 322, a fixed shaft 323 and a worm and gear assembly, a driving gear 324 is mounted on a motor shaft of the extension motor 321, a driven gear 325 meshed with the driving gear is mounted on the transmission shaft 322, the transmission shaft is driven through transmission among the gears, and first conical gears 326 are arranged at two ends of the transmission shaft 322; the swing link assembly 33 further comprises two bottom rods 331, a rotating shaft 332, a swing link and a mounting plate 333, the bottom rods are parallel to each other and are mounted on the bottom plate of the fixing seat, two ends of the rotating shaft 332 are rotatably mounted on the two bottom rods 331, the rotating shaft 332 is perpendicular to the transmission shaft 322, and a second bevel gear 334 is fixed on the rotating shaft 332 and meshed with the first bevel gear 326 on the transmission shaft; one end of the swing rod is fixed on the rotating shaft, the other end of the swing rod is rotatably installed on the installation plate 333, and the first tail wing 1 is fixed on the installation plate 333. The transmission shaft and the rotating shaft are transmitted through the conical gear, the moving direction can be changed, the rotating shaft can drive the swing rod to rotate, and the first tail wing is driven to swing outwards and open above the swing rod.

The swing rods are divided into a group of driving swing rods 335 and a group of driven swing rods 336, the driving swing rods and the driven swing rods are parallel to each other, one end of each driving swing rod 335 is fixedly installed on the rotating shaft 332, the other end of each driving swing rod is rotatably installed on the installation plate 333, one end of each driven swing rod 336 is rotatably installed on the bottom rod 331, and the other end of each driven swing rod is rotatably installed on the installation plate 333. Each group of driving swing rods is provided with two swing rods which are respectively positioned at two ends of the rotating shaft, in order to enable the first tail wing to be more stably unfolded, a group of driven swing rods are additionally arranged, and the driven swing rods only play a role in assisting the first tail wing to swing.

The fixed shaft 323 is parallel to the transmission shaft 322, two ends of the fixed shaft are rotatably mounted on the partition plate 312, and the end part of the fixed shaft extends out of the partition plate; the fixed seat 31 is connected with the lifting mechanism 4 through the lifting block 34, the bottom plate 311 of the fixed seat is provided with two openings which are respectively positioned outside the two partition plates, one end of the lifting block 34 is fixed on the lifting seat 42 of the lifting mechanism 4, the other end of the lifting block passes through the opening of the fixed seat 31 and is fixed at the end part of the fixed shaft 323, relative rotation cannot occur between the fixed shaft and the lifting block, and the fixed shaft and the lifting block are firmly fixed together. The worm and gear assembly comprises a worm 327 and a worm wheel 328 matched with the worm 327, the worm 327 is rotatably installed on the fixed seat 31 and is perpendicular to the transmission shaft, a first helical gear 329 is installed on the transmission shaft 322, a second helical gear 330 is installed on the worm 327, the first helical gear 329 and the second helical gear 330 realize 90-degree rotation transmission through the helical gears, and the worm wheel 328 is fixedly installed on the fixed shaft 323; the worm and the worm wheel work in a matched mode, the worm drives the worm wheel to rotate originally, but the worm wheel is fixedly installed on the fixed shaft, the fixed shaft is fixedly installed on the lifting block, and therefore under the condition that the worm wheel cannot rotate, the worm moves along the outline of the worm wheel, the worm integrally inclines, the fixed seat is driven to integrally incline, the rear portions of the first tail wing and the second tail wing are tilted upwards, and the resistance effect is improved.

The lifting mechanism 4 comprises a base 41, a lifting seat 42, a screw motor 43 and a lifting support 44, the lifting seat 44 is connected with the fixed seat 31 through a lifting block 34, one end of the lifting seat 42 is provided with a first guide rail 421, a first sliding block 422 is arranged in the lifting seat, two sides of the first sliding block are provided with rolling wheels, the rolling wheels are placed on the first guide rail, and the other end of the lifting seat is provided with a first mounting block 423; one end of the base 41 is provided with a second guide rail 411, a second sliding block 412 is arranged in the base, two sides of the second sliding block are also provided with rollers, the rollers are placed on the second guide rail, and the other end of the base is provided with a second mounting block 413; the screw motor 43 is horizontally arranged and is a telescopic motor, the first sliding block 422 is fixed on a motor shaft of the screw motor 43, and the screw motor can drive the first sliding block to horizontally move; two sides of the lifting seat are respectively provided with a group of lifting brackets 44, each group of lifting brackets 44 comprises a first bracket 441 and a second bracket 442 which are arranged in a crossed manner, and the first bracket and the second bracket are rotationally connected into an X-shaped structure through pin shafts; the first bracket 441 has one end rotatably mounted on the first slider 422 and the other end rotatably mounted on the second mounting block 413, and the second bracket 442 has one end rotatably mounted on the second slider 412 and the other end rotatably mounted on the first mounting block 423. The outer side of the lifting seat is provided with a circle of baffle plates, the baffle plates extend downwards to the outer side of the base, and the screw motor, the guide rail and the lifting support are all located in the baffle plates, so that the lifting seat is safe and attractive.

Lead screw motor 43 level is placed, for telescopic motor, the motor shaft drives first slider 422 along first guide rail horizontal migration, when first slider removes towards lead screw motor place direction, fix two first supports 441 in first slider both sides and be driven with the ease, make first support 441 rotate around second installation piece 413, and first support passes through the round pin hub connection with the second support, drive the second support when first support pivoted, make the second support rotate around first installation piece 423, jack up the seat that goes up and down together, lift seat 42 passes through elevator 34, fixed axle 323 drives fixing base 31 wholly to rise, first fin begins to expand. When the first tail wing is folded, the screw motor pushes the first sliding block to reset, and the first support and the second support drive the lifting seat to descend to return to the initial position.

The tail wing is of a three-section structure and comprises first tail wings 1 at two sides and a second tail wing 2 in the middle, when the automobile is in a non-working state, the first tail wing 1 is positioned at a low position, the two sides are relatively close to each other and positioned in a tail wing accommodating groove of an automobile tail 5, and the second tail wing 2 is positioned below the first tail wing 1; when the speed or acceleration G value reaches a certain value and the tail wing needs to be unfolded, the lifting mechanism 4 starts to work, a motor shaft of the lead screw motor drives the first sliding block to horizontally move along the first guide rail, when the first sliding block moves towards the direction of the lead screw motor, two first supports fixed on two sides of the first sliding block are driven along the same trend, the first supports rotate around the first mounting block, the first supports are connected with the second supports through pin shafts, the first supports drive the second supports while rotating, the second supports rotate around the second mounting block to jack the lifting seat together, and the lifting seat drives the fixing seat to integrally lift through the lifting block and the fixing shaft;

meanwhile, the extension mechanism 3 starts to work, the extension motor 321 drives the transmission shaft 322 to rotate through the driving gear and the driven gear which are meshed with each other, the transmission shaft drives the rotating shafts 332 in the swing rod assemblies at two sides to rotate through the first bevel gears at two ends, the rotating shafts drive the driving swing rods 335 to swing towards two sides, so that the first tail wings 1 at two sides are driven to be unfolded outwards through the mounting plate, and the unfolded first tail wings 1 are rotated around the rotating shafts, so that the unfolded first tail wings 1 are just connected with the middle second tail wings 2 to form a complete three-section tail wing, and the area of the tail wings is increased;

the transmission shaft 322 can also drive the worm 327 to rotate through the first bevel gear and the second bevel gear which are matched with each other, the worm is matched with the worm wheel 328, the worm wheel should be driven to rotate originally, but the worm wheel is fixedly installed on the fixed shaft which is fixedly installed on the lifting block, so that under the condition that the worm wheel cannot rotate, the worm moves along the outline of the worm wheel, the worm inclines, the fixed seat is driven to rotate integrally relative to the fixed shaft, the rear parts of the first tail wing 1 and the second tail wing 2 are both upwards tilted, and the resistance effect is improved. The transmission shaft synchronously drives the first tail wing to unfold and the first tail wing and the second tail wing to incline, so that the stability of the automobile in high-speed running is ensured.

The three sections of the tail wings can be controlled by an automobile control system, a G value condition and a speed condition for unfolding the tail wings can be preset on an automobile control panel or a mobile phone app connected with an automobile operating system, the speed can be switched within 0-120km/h, an actual G value for accelerating and turning can be sensed by a gyroscope arranged in the automobile, the automobile control system compares the actual G value with the preset G value, if the actual G value is larger than the preset G value, the tail wings are opened (the tail wings are lifted, unfolded and inclined), and if the actual G value is smaller than the preset G value, the tail wings are closed; meanwhile, if the actual running speed of the automobile is higher than the preset speed, the tail wing is opened as well.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. A three-section empennage is characterized in that: the device comprises first tail wings at the left side and the right side and a second tail wing positioned in the middle, wherein a stretching mechanism for driving the first tail wing to open and close and a lifting mechanism for driving the first tail wing and the second tail wing to move up and down are further arranged below the first tail wing; the stretching mechanism comprises a fixed seat, a driving assembly and a swing rod assembly, the driving assembly and the swing rod assembly are arranged in the fixed seat, the driving assembly is positioned below the second tail wing, the swing rod assembly is positioned on two sides of the driving assembly, and the first tail wing is fixed on the swing rod assembly; the driving assembly comprises a stretching motor, a transmission shaft, a fixed shaft and a worm and gear assembly, the stretching motor drives the swing rod assemblies on two sides through the transmission shaft, the first tail wing can be unfolded towards two sides or folded towards the middle, and when the first tail wing is unfolded, the first tail wing and the second tail wing are connected into a whole; when the first tail wing is folded, the second tail wing is positioned below the first tail wing; the fixed shaft is rotatably arranged on the fixed seat, the end part of the fixed shaft is fixed on the lifting block, and the lifting block penetrates through the fixed seat and is fixedly connected with the lifting mechanism; the worm and gear assembly comprises a worm and a worm wheel matched with the worm, the worm is linked with the transmission shaft, the worm wheel is fixedly installed on the fixed shaft, and the worm and gear assembly drives the first tail wing and the second tail wing to integrally incline.

2. A three-section tail as claimed in claim 1, wherein: the inside of the fixed seat is divided into 3 areas by two partition plates, a driving assembly is arranged in the middle area, two swing rod assemblies are respectively arranged in the two side areas, the second tail wings are fixed above the two partition plates, the fixed shaft and the transmission shaft are parallel to each other, and two ends of the fixed shaft are rotatably arranged on the partition plates and extend out of the partition plates to be fixedly connected with the lifting block; the worm is perpendicular to the transmission shaft and is in transmission through the helical gear, and the worm wheel work in a matched mode to drive the fixing seat to rotate around the fixing shaft.

3. A three-section tail as claimed in claim 1, wherein: the stretching motor is connected with a transmission shaft through a gear, and two ends of the transmission shaft are provided with first conical gears; the swing rod assembly further comprises bottom rods, a rotating shaft, a swing rod and an installation plate, the bottom rods are installed on the fixed seat, two ends of the rotating shaft are rotatably installed on the two bottom rods, the rotating shaft is perpendicular to the transmission shaft, and a second bevel gear is fixed on the rotating shaft and meshed with the first bevel gear on the transmission shaft; one end of the swing rod is fixed on the rotating shaft, the other end of the swing rod is rotatably installed on the installation plate, and the first tail wing is fixed on the installation plate.

4. A three-section tail as claimed in claim 3, wherein: the swing rod is divided into a group of driving swing rods and a group of driven swing rods, the driving swing rods and the driven swing rods are parallel to each other, one ends of the driving swing rods are fixedly installed on the rotating shaft, the other ends of the driving swing rods are rotatably installed on the installation plate, one ends of the driven swing rods are rotatably installed on the bottom rod, and the other ends of the driven swing rods are rotatably installed on the installation plate.

5. A three-section tail as claimed in claim 1, wherein: the whole fixed seat is of a box-packed structure and comprises a bottom plate and a plurality of side plates, the side plates are fixed at the edge of the bottom plate, and the driving assembly and the swing rod assembly are positioned in the side plates; the cover plate is arranged above the two partition plates of the fixing seat, the cover plate and the partition plates form a closed area, the driving assembly is located in the closed area, and the second tail wing is fixed above the cover plate.

6. A three-section tail as claimed in claim 1, wherein: elevating system includes base, lift seat, lead screw motor and lifting support, and the lift seat passes through the elevator with the fixing base to be connected, links to each other through lifting support between base and the lift seat, and lead screw motor drives the lifting support swing, adjusts the distance between base and the lift seat, drives first fin, second fin and reciprocates.

7. A three-section tail as claimed in claim 6, wherein: one end of each of the lifting seat and the base is provided with a horizontally arranged guide rail, a sliding block matched with the guide rail is arranged in the guide rail, one sliding block is arranged on a motor shaft of the screw motor, the other end of each of the lifting seat and the base is provided with an installation block, two sides of each of the lifting seat are respectively provided with a group of lifting supports, each group of lifting supports comprises a first support and a second support which are arranged in a crossed mode, and the first support and the second support are rotationally connected through a pin shaft; the two ends of the first support and the two ends of the second support are respectively rotatably installed on the sliding block and the installation block, and a motor shaft of the lead screw motor is fixedly connected with the first sliding block on the lifting seat to drive the lifting support to swing around the installation block to drive the first tail wing and the second tail wing to ascend and descend.

8. A three-section tail as claimed in claim 7, wherein: one end of the lifting seat is provided with a first guide rail, a first sliding block is arranged in the lifting seat, the first sliding block is fixed on a motor shaft of the screw motor and can move along the guide rail, and a first mounting block is arranged at the other end of the lifting seat; one end of the base is provided with a second guide rail, a second sliding block is arranged in the base, and the other end of the base is provided with a second mounting block; one end of the first support is rotatably installed on the first sliding block, the other end of the first support is rotatably installed on the second installation block, one end of the second support is rotatably installed on the second sliding block, the other end of the second support is rotatably installed on the first installation block, and the first support and the second support are installed into an X-shaped structure through a pin shaft.

9. A three-section tail as claimed in claim 6, wherein: the outer side of the lifting seat is provided with a circle of baffle plates, the baffle plates extend downwards to the outer side of the base, and the screw motor, the guide rail and the lifting support are all located in the baffle plates.