CN216943318U

CN216943318U - Electric tail wing with gap adjusting mechanism

Info

Publication number: CN216943318U
Application number: CN202123109497.5U
Authority: CN
Inventors: 孙云飞; 李书亮; 胡瑞云
Original assignee: Ningbo Huakai Electronic Technology Co ltd
Current assignee: Ningbo Huakai Electronic Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-12
Anticipated expiration: 2031-12-07

Abstract

An electric tail having a clearance adjustment mechanism, comprising: a tail body; the driving assembly and the transmission assembly are used for driving the tail wing body to ascend or descend; the tail fin support is used for connecting the tail fin body with the transmission assembly; the tail wing bracket is connected with the tail wing body through a gap adjusting mechanism; the clearance adjusting mechanism comprises a clearance adjuster, an adjuster base and an adjusting screw; the adjusting screw is fixedly connected with the empennage body, and the clearance adjuster, the adjuster base and the empennage bracket are sequentially arranged between the adjusting screw and the empennage body; the gap adjuster is in contact fit with the adjuster base and can realize the vertical position adjustment of the empennage body relative to the empennage bracket; the adjusting screw is in clearance fit with the clearance adjuster, so that the horizontal position of the empennage body relative to the empennage bracket is adjusted. According to the invention, through the gap adjusting mechanism arranged between the tail wing body and the tail wing bracket, tolerance compensation can be carried out in the mounting link, so that higher mounting precision of the tail wing is realized.

Description

Electric tail wing with gap adjusting mechanism

Technical Field

The invention relates to the technical field of automobile parts, in particular to an electric empennage with a gap adjusting mechanism.

Background

The automobile tail fin is a spoiler in the profession, and belongs to a part of an automobile aerodynamic suite. The automobile tail fin mainly has the effect of reducing the lift force of the tail of a vehicle, and if the lift force of the tail of the vehicle is larger than that of the head of the vehicle, the oversteer of the vehicle, the reduction of the ground holding force of rear wheels and the deterioration of high-speed stability are easily caused.

The working principle is as follows: 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.

The automobile tail fin has the effects that when an automobile runs at a high speed, air resistance forms downward pressure, lift force is counteracted 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. Some foreign people vividly call it a "snow crow plate" according to its shape. The duck tail or the wind-stabilizing wing is also called in China, and the more scientific name is 'spoiler', 'spoiler wing' or 'spoiler'. The tail fin is generally divided into a single-layer tail fin and a double-layer tail fin, which are made of two materials, namely an aluminum alloy tail fin and a carbon fiber, and the tail fin is divided into manual adjustment and hydraulic automatic adjustment, wherein the hydraulic automatic adjustment is provided with a plurality of hydraulic upright columns, and the angle can be automatically adjusted according to the vehicle speed.

In the assembly process of the tail wing, when at least two components (the tail wing body and the vehicle body) need to be assembled together, the two components are generally directly connected and fixed through screws, and the assembly process is limited by defects existing in machining and installation, so certain tolerance is necessarily existed. Through analysis, firstly, a certain dimensional tolerance exists during the production of a single component, namely, a certain error always exists in the actual size after the production due to the influence of factors such as processing or measurement and the like in the manufacturing process of parts; second, when two or more members are fastened, a position tolerance is also inevitably generated. The existence of tolerance almost runs through the life cycle of the whole product, and influences the quality of the product, the processing route, the detection, the production and manufacturing cost, the assembly of the final product and the like.

US7891927B2 describes a positioning device with tolerance compensation for positioning a first automotive component relative to a second automotive component. The positioning device with tolerance compensation of US7891927B2 comprises a screw and an intermediate part with an internal thread cooperating with the screw. The intermediate part also has an (external) thread which is screwed into an insert which is fixed relative to the second vehicle part. Tightening of the screw and the intermediate member positions the first automotive component relative to the second automotive component. However, the parts of the positioning device with tolerance compensation of US7891927B2 have complex geometries, which make them difficult to be control units and impose that they are manufactured in plastic. Nevertheless, these plastic parts may creep and cannot withstand the considerable forces necessary to maintain a durable and low vibration fastening. Furthermore, the positioning device of US7891927B2 requires the operator to make position adjustments during assembly of the automotive components.

Therefore, a gap adjusting mechanism for an empennage is urgently needed, which can compensate tolerance in an installation link so as to realize higher installation precision of the empennage.

Disclosure of Invention

In order to overcome the above-mentioned disadvantages of the prior art, the present invention provides an electric rear wing having a gap adjusting mechanism.

The technical scheme for solving the technical problem is as follows: an electric tail having a clearance adjustment mechanism, comprising:

a tail body;

the driving assembly and the transmission assembly are used for driving the tail wing body to ascend or descend;

the tail fin support is used for connecting the tail fin body with the transmission assembly;

the tail wing bracket is connected with the tail wing body through a gap adjusting mechanism; the clearance adjusting mechanism comprises a clearance adjuster, an adjuster base and an adjusting screw;

the adjusting screw is in threaded connection with the empennage body so as to clamp the clearance adjuster, the adjuster base and the empennage bracket between the adjusting screw and the empennage body in sequence;

the gap adjuster is in contact fit with the adjuster base and can realize the vertical position adjustment of the empennage body relative to the empennage bracket;

the adjusting screw and the clearance adjuster form clearance fit to realize the horizontal position adjustment of the empennage body relative to the empennage bracket.

The technical scheme is further set as follows: the clearance adjuster comprises a thread section and a clearance press-connection end surface, a first through hole penetrating through the clearance adjuster is formed in the clearance adjuster, and the aperture of the first through hole is larger than the thread diameter of the adjusting screw so as to form a horizontal adjusting clearance;

the regulator base comprises a base inserting section and a base pressing connection end face, and a second through hole penetrating through the regulator base is formed in the regulator base;

the empennage bracket is provided with a noncircular connecting hole, and the empennage body is provided with a threaded connecting hole;

the base inserting section is clamped into the noncircular connecting hole, the thread section is screwed into the second through hole, and the adjusting screw is reversely arranged and forms threaded connection with the thread connecting hole after passing through the first through hole; the gap compression joint end face is abutted to the tail wing body, the thread section is in threaded connection with the second through hole, and the base compression joint end face is abutted to the tail wing support.

Preferably, the left side and the right side of the empennage body are respectively connected with a group of transmission assemblies, two groups of clearance adjusting mechanisms are arranged between the empennage bracket and the empennage body on one side, and the two groups of clearance adjusting mechanisms are arranged in a front-back manner.

The technical scheme is further set as follows: the driving assembly is sequentially connected with a motor, a speed reducer, an output gear set and an output shaft according to a transmission sequence, wherein the motor and the output shaft are arranged side by side and are transversely arranged;

the transmission assembly is sequentially connected with an input shaft, a reversing gear set, a screw rod, a nut seat and a multi-connecting-rod hinge set according to a transmission sequence, wherein the screw rod and the multi-connecting-rod hinge set are arranged side by side and are longitudinally arranged;

the input shaft and the output shaft form synchronous transmission fit through a synchronous shaft sleeve.

Preferably, the synchronizing sleeve has a spline through hole, and the end portions of the input shaft and the output shaft have spline portions inserted into the spline through hole.

The technical scheme is further set as follows: the multi-connecting-rod hinge group comprises an input connecting rod hinge, an inner side scissor-type hinge and an outer side scissor-type hinge;

the input connecting rod hinge is connected with the nut seat and forms transmission fit, the inner side scissor-type hinge and the outer side scissor-type hinge are respectively in transmission connection with the tail wing support, and the inner side scissor-type hinge is in transmission connection with the outer side scissor-type hinge through an auxiliary transmission pin.

The technical scheme is further set as follows: the input connecting rod hinge on be equipped with first claw coupling, inboard scissor hinge on be equipped with the second claw coupling of first claw coupling looks meshing, just first claw coupling and second claw coupling between be equipped with the elastic component.

The technical scheme is further set as follows: the connection point a of the inner side scissor type hinge and the tail wing support is higher than the connection point b of the outer side scissor type hinge and the tail wing support, and the connection point a is located behind the connection point b.

Preferably, the joints of the multi-connecting-rod hinge groups and the tail support are connected through rivet pins, each rivet pin is provided with a thick section and a thin section, each thick section is rotatably connected with the multi-connecting-rod hinge group or the tail support, each thin section is riveted and fixed with the tail support or the multi-connecting-rod hinge group, the tail end of each thin section is deformed under stress and then enlarged to form a compression joint section, and the compression joint section is tightly matched with the tail support or the multi-connecting-rod hinge group.

Preferably, the output gear set comprises an output helical gear and an input helical gear, the output helical gear is sleeved on a motor shaft of the motor, the input helical gear is sleeved on the output shaft, and the output helical gear is in meshing transmission with the input helical gear;

the reversing gear set comprises a first reversing gear which is longitudinally arranged and connected with the input shaft and a second reversing gear which is transversely arranged and connected with the screw rod, the first reversing gear and the second reversing gear are constant-speed bevel gears and are in meshing transmission with each other.

The invention has the beneficial effects that:

1. through the clearance adjustment mechanism arranged between the empennage body and the empennage bracket, tolerance compensation can be carried out in the installation link, so that higher installation precision of the empennage is realized.

2. Through the installation and the use of clearance adjustment ware, regulator base and adjusting screw, can realize vertical and level to all-round clearance adjustment function to further improve the installation accuracy of fin body.

3. The double-shear hinge structure consisting of the inner shear hinge and the outer shear hinge enables the operation of the two sides of the empennage body to be more stable and smooth, and enhances the integral rigidity of the structure.

4. Through the setting of contact boss, can increase the area of contact with the fin support, compact structure closely prevents not hard up in the cooperation, and bearing capacity is stronger.

Drawings

Fig. 1 is an overall assembly schematic of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an exploded view of the gap adjusting mechanism of the present invention.

FIG. 4 is a schematic view of the drive assembly and transmission assembly.

Fig. 5 is a schematic view of the internal structure of the drive assembly and the transmission assembly.

Fig. 6 is a schematic structural view of the transmission assembly, tail mount and gap adjustment mechanism.

Fig. 7 is a schematic view of the transmission assembly, tail mount and gap adjustment mechanism at another angle.

Fig. 8 is a disassembled schematic view of the transmission assembly, tail mount and gap adjustment mechanism.

Fig. 9 is a partial sectional view of the multi-link hinge set and tail mount in an assembled state.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, an electric rear wing having a gap adjusting mechanism includes:

an empennage body 1;

the driving assembly 2 and the transmission assembly 3 are used for driving the tail wing body 1 to ascend or descend;

the tail wing bracket 4 is used for connecting the tail wing body 1 with the transmission assembly 3;

the empennage bracket 4 is connected with the empennage body 1 through a gap adjusting mechanism 5; the gap adjusting mechanism 5 comprises a gap adjuster 6, an adjuster base 7 and an adjusting screw 8;

the adjusting screw 8 is in threaded connection with the empennage body 1, so that the clearance adjuster 6, the adjuster base 7 and the empennage bracket 4 are sequentially clamped between the adjusting screw 8 and the empennage body 1;

the gap adjuster 6 is in contact fit with the adjuster base 7 and can realize the vertical position adjustment of the empennage body 1 relative to the empennage bracket 4;

the adjusting screw 8 and the gap adjuster 6 form clearance fit to realize the horizontal position adjustment of the empennage body 1 relative to the empennage bracket 4.

Further, the adjuster base 7 is welded to the tail support 4 to improve positional stability.

Referring to fig. 2 and 3, in order to realize the function of adjusting the vertical position and the horizontal position of the tail support 4 by the gap adjusting mechanism 5, the specific structures and the mutual assembling modes of the gap adjuster 6, the adjuster base 7 and the adjusting screw 8 in the above technical solution are as follows: the gap adjuster 6 comprises a thread section 61 and a gap press-connection end surface 62, a first through hole 63 penetrating through the gap adjuster 6 is formed in the gap adjuster 6, and the aperture of the first through hole 63 is larger than the thread diameter of the adjusting screw 8 so as to form a horizontal adjusting gap 9; the regulator base 7 comprises a base insertion section 71 and a base press-connection end surface 72, and the regulator base 7 is provided with a second through hole 73 penetrating through the regulator base 7; the empennage bracket 4 is provided with a noncircular connecting hole 41, and the empennage body 1 is provided with a threaded connecting hole 101; the base insertion section 71 is clamped into the noncircular connecting hole 41, the threaded section 61 is screwed into the second through hole 73, and the adjusting screw 8 is reversely arranged and forms threaded connection with the threaded connecting hole 101 after passing through the first through hole 63; the gap press-connection end surface 62 is abutted against the tail body 1, the thread section 61 is in threaded connection with the second through hole 73, and the base press-connection end surface 72 is abutted against the tail support 4.

Referring to fig. 4, a set of transmission assemblies 3 are respectively connected to the left and right sides of the tail body 1. Firstly, the driving assemblies 2 of the same set synchronously drive the transmission assemblies 3 on two sides, and the structure of the transmission assemblies 3 is superior to that of the transmission assemblies 3 independently driven by a single-side motor on the market, so that the risk of the safety accident caused by the single-side collapse of the empennage and the side-tipping of the vehicle body due to the single-side transmission failure is effectively avoided. Furthermore, two sets of gap adjusting mechanisms 5 are arranged between the empennage bracket 4 and the empennage body 1 on one side, and the two sets of gap adjusting mechanisms 5 are arranged in a front-back manner; during the use, two inter-group gap adjustment mechanisms 5 can be independently installed and debugged respectively, and then make the front end and the rear end of fin body 1 all can realize independent regulation.

The specific composition and arrangement of the driving assembly 2 and the transmission assembly 3 are as follows: the driving assembly 2 comprises a motor 201, a speed reducer 202, an output gear set and an output shaft 205 which are sequentially connected according to a transmission sequence, wherein the motor 201 and the output shaft 205 are arranged side by side and are transversely arranged; the transmission assembly 3 comprises an input shaft 301, a reversing gear set, a screw rod 304, a nut seat 305 and a multi-connecting-rod hinge group 18 which are sequentially connected according to a transmission sequence, wherein the screw rod 304 and the multi-connecting-rod hinge group 18 are arranged side by side and are longitudinally arranged; the input shaft 301 and the output shaft 205 form a synchronous transmission fit through a synchronous shaft 306 sleeve. In the above scheme, motor 201 and output shaft 205 set up side by side and all are transversely arranging, and lead screw 304 sets up side by side with many connecting rod hinge group 18 and all is vertically arranging, under the reliable stable circumstances of assurance transmission for overall layout is compacter practical, and moves reliable and stable.

In this embodiment, the synchronizing shaft 306 has a spline through hole 307, the ends of the input shaft 301 and the output shaft 205 have spline portions 308, and the spline portions 308 are inserted into the spline through hole 307. The connecting structure of the spline is adopted, so that the connection between the shafts is more reliable, the reduction of transmission efficiency caused by slippage can not occur, and the transmission is more direct.

The structure of the multi-link hinge group 18 has various forms, and the embodiment provides a preferable scheme suitable for the electric empennage, which specifically comprises: referring to fig. 6 and 7, the input link hinge 10, the inside scissor hinge 11 and the outside scissor hinge 12 are included; the input connecting rod hinge 10 is connected with the nut seat 305 and forms transmission fit, the inner side scissor hinge 11 and the outer side scissor hinge 12 are respectively in transmission connection with the tail support 4, and the inner side scissor hinge 11 is in transmission connection with the outer side scissor hinge 12 through an auxiliary transmission pin 13. Through the arrangement of the auxiliary transmission pin 13, the double-point transmission fit is formed between the inner side shear type hinge 11 and the outer side shear type hinge 12, so that the transmission is more stable and reliable, particularly, the empennage body 1 still has better support performance under the condition of strong downward pressure, and the forced deformation and displacement are avoided.

The multi-link hinge group 18 is further configured to: referring to fig. 8, the input link hinge 10 is provided with a first claw coupling 14, the inner scissor hinge 11 is provided with a second claw coupling 15 engaged with the first claw coupling 14, and an elastic member 16 is disposed between the first claw coupling 14 and the second claw coupling 15, wherein the elastic member 16 is preferably a torsion spring or a straight spring. The resilient member 16 provides a unidirectional axial torque to the nut seat 305 to cause the nut seat 305 to mate with the lead screw 304. In operation, the elastic element 16 provides a unidirectional axial torque to act on the nut seat 305, so that the screw rod 304 and the nut seat 305 are in close contact fit all the time, the scraping gap is offset, oil is applied in a matched manner, the nut transmission system of the screw rod 304 is uniformly stressed, transmission is smooth, the wear resistance is improved, and noise is reduced.

The technical scheme is further set as follows: the connection point a of the inner scissor hinge 11 and the tail support 4 is higher than the connection point b of the outer scissor hinge 12 and the tail support 4, and the connection point a is located behind the connection point b. Connecting point a, connecting point b adopt about, stagger the mode of arranging around, can make 4 both sides atress of fin support balanced, can provide bigger holding power under the same material size, play the effect of reinforcing stability, reliability, and both cooperate in coordination to play the lift effect of fin body 1 stepless formula opening angle.

Referring to fig. 9, the joints of the multi-link hinge group 18 and the tail support 4 are all connected by a rivet pin 17, the rivet pin 17 has a thick section 1701 and a thin section 1702, the thick section 1701 is rotatably connected with the multi-link hinge group 18 or the tail support 4, the thin section 1702 is riveted with the tail support 4 or the multi-link hinge group 18, the end of the thin section 1702 is deformed by force and then becomes larger to form a crimping section 1703, and the crimping section 1703 forms a tight fit with the tail support 4 or the multi-link hinge group 18. The arrangement of the rivet pin 17 firstly enables one of the rest multi-link hinge groups 18 and the tail support 4 to form a rotary connection relationship and form a riveting fixed relationship with the other, and then the tail support 4 can realize the stepless regulation effect of lifting and rotating under the action of the multi-link hinge groups 18. On the other hand, the rivet pin 17 can increase the contact area with the tail support 4, so that the structure is compact, the fit is tight to prevent looseness, and the bearing capacity is stronger.

Further, the input link hinge 10, the inside scissor hinge 11, and the outside scissor hinge 12 may be connected to each other, and the links inside the input link hinge 10, the inside scissor hinge 11, and the outside scissor hinge 12 may also be connected to each other by a rivet pin 17, which is selected according to actual situations.

The inner side scissor type hinge 11 and the outer side scissor type hinge 12 are both provided with contact bosses 17, and the contact bosses 17 are riveted with the tail wing support 4. The contact area between the contact boss 17 and the tail support 4 can be increased, the structure is compact, the fit is tight, the looseness is prevented, and the bearing capacity is stronger.

The common spur gears are engaged along the tooth width simultaneously, so that impact vibration noise is generated, and the transmission is not stable. In the invention, an optimized design concept of an advanced module combination system is adopted, an output gear set comprises an output bevel gear 203 and an input bevel gear 204, the output bevel gear 203 is sleeved on a motor shaft of the motor 201, the input bevel gear 204 is sleeved on the output shaft 205, and the output bevel gear 203 and the input bevel gear 204 are in meshing transmission. Therefore, the device has the advantages of small volume, light weight, large transmission torque, smooth start, fine transmission ratio grading, and capability of being connected at will and selecting various installation positions according to the requirements of users;

the reversing gear set comprises a first reversing gear 302 which is longitudinally arranged and connected with the input shaft 301 and a second reversing gear 303 which is transversely arranged and connected with the screw rod 304, wherein the first reversing gear 302 and the second reversing gear 303 both adopt constant-speed bevel gears and are in meshing transmission with each other. Through the cooperation of the first reversing gear 302 and the second reversing gear 303, power transmission and power reversing are realized, the occupied space is smaller, and the installation and the use of other parts are facilitated.

The lifting working principle of the empennage body 1 is as follows: the motor 201 is decelerated by the speed reducer 202 and then drives the output shafts 205 on two sides through the output gear set, the output shafts 205 drive the transmission assemblies 3 on two sides to synchronously move through the synchronizing shaft 306 sleeve and the input shaft 301, the transmission assemblies 3 adjust the transverse power into the longitudinal power through the reversing gear set and then drive the screw rod 304 to rotate, the nut seat 305 on the screw rod 304 linearly moves along the screw rod 304, the nut seat 305 drives the inner side scissor hinge 11 to realize the upwarp or the landing of one end of the tail wing body 1, meanwhile, the inner side scissor hinge 11 drives the outer side scissor hinge 12 to realize the upwarp or the landing of the other end of the tail wing body 1, and the two phases are combined to realize the stepless regulation opening and closing function of the whole ascending or descending of the tail wing body 1.

The invention has the core innovation point that the tail wing device also has the function of adjusting the clearance of the tail wing body 1 relative to the tail wing bracket 4, and the installation mode is as follows: firstly, screwing the threaded section 61 into the second through hole 73 to realize the connection between the gap adjuster 6 and the adjuster base 7; the base insertion section 71 is clamped into the noncircular connecting hole 41, so that the gap adjuster 6 and the adjuster base 7 are mounted on the tail support 4 in a communicating manner; then the empennage body 1 is pressed on the upper ends of the gap adjuster 6 and the adjuster base 7; finally, the adjusting screw 8 is inversely installed and forms threaded connection with the threaded connecting hole 101 after passing through the first through hole 63, and therefore the connection between the empennage body 1 and the empennage bracket 4 is achieved. The vertical clearance adjusting mode comprises the following steps: the number of thread turns of the thread section 61 screwed into the second through hole 73 can be adjusted to compensate for vertical tolerance, and independent adjustment of the front and rear side heights of the empennage body 1 can be realized through two sets of clearance adjusting mechanisms 5 arranged in front and rear; horizontal clearance adjustment mode: because the aperture of the first through hole 63 is larger than the thread diameter of the adjusting screw 8 and the horizontal adjusting gap 9 is formed, so that the adjusting screw 8 and the gap adjuster 6 form a clearance fit, the adjusting screw 8 can horizontally move relative to the gap adjuster 6 according to the tolerance condition to compensate the horizontal tolerance.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An electric tail having a clearance adjustment mechanism, comprising:

a tail body;

the method is characterized in that: the tail wing bracket is connected with the tail wing body through a gap adjusting mechanism; the clearance adjusting mechanism comprises a clearance adjuster, an adjuster base and an adjusting screw;

the adjusting screw is in threaded connection with the empennage body so as to sequentially clamp the clearance adjuster, the adjuster base and the empennage bracket between the adjusting screw and the empennage body;

2. Electric tail with gap adjustment mechanism according to claim 1, characterized in that: the clearance adjuster comprises a thread section and a clearance press-connection end surface, a first through hole penetrating through the clearance adjuster is formed in the clearance adjuster, and the aperture of the first through hole is larger than the thread diameter of the adjusting screw so as to form a horizontal adjusting clearance;

3. Electric tail with gap adjustment mechanism according to claim 1, characterized in that: the left side and the right side of the empennage body are respectively connected with a group of transmission assemblies, two groups of clearance adjusting mechanisms are arranged between the empennage bracket and the empennage body on one side, and the two groups of clearance adjusting mechanisms are arranged in the front and back direction.

4. Electric tail with gap adjustment mechanism according to claim 1, characterized in that: the driving assembly is sequentially connected with a motor, a speed reducer, an output gear set and an output shaft according to a transmission sequence, wherein the motor and the output shaft are arranged side by side and are transversely arranged;

5. The electric rear wing with clearance adjustment mechanism according to claim 4, characterized in that: the synchronous shaft sleeve is provided with a spline through hole, the end parts of the input shaft and the output shaft are provided with spline parts, and the spline parts are inserted into the spline through hole.

6. The electric rear wing with clearance adjustment mechanism according to claim 4, characterized in that: the multi-connecting-rod hinge group comprises an input connecting rod hinge, an inner side scissor type hinge and an outer side scissor type hinge;

7. Electric tail with gap adjustment mechanism according to claim 6, characterized in that: the input connecting rod hinge is provided with a first claw type coupler, the inner side scissor type hinge is provided with a second claw type coupler meshed with the first claw type coupler, and an elastic piece is arranged between the first claw type coupler and the second claw type coupler.

8. Electric tail with gap adjustment mechanism according to claim 6, characterized in that: the connection point a of the inner side scissor type hinge and the tail wing support is higher than the connection point b of the outer side scissor type hinge and the tail wing support, and the connection point a is located behind the connection point b.

9. Electric tail with gap adjustment mechanism according to claim 4, characterized in that: the multi-connecting-rod hinge group is connected with the connection part of the empennage support through a rivet pin, the rivet pin is provided with a thick section and a thin section, the thick section is rotationally connected with the multi-connecting-rod hinge group or the empennage support, the thin section is fixedly riveted with the empennage support or the multi-connecting-rod hinge group, the tail end of the thin section is stressed and deformed to be enlarged, so that a crimping section is formed, and the crimping section is tightly matched with the empennage support or the multi-connecting-rod hinge group.

10. Electric tail with gap adjustment mechanism according to claim 4, characterized in that: the output gear set comprises an output helical gear and an input helical gear, the output helical gear is sleeved on a motor shaft of the motor, the input helical gear is sleeved on the output shaft, and the output helical gear and the input helical gear are in meshing transmission;