WO2020107571A1 - Moteur de direction et véhicule aérien sans pilote - Google Patents

Moteur de direction et véhicule aérien sans pilote Download PDF

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Publication number
WO2020107571A1
WO2020107571A1 PCT/CN2018/122134 CN2018122134W WO2020107571A1 WO 2020107571 A1 WO2020107571 A1 WO 2020107571A1 CN 2018122134 W CN2018122134 W CN 2018122134W WO 2020107571 A1 WO2020107571 A1 WO 2020107571A1
Authority
WO
WIPO (PCT)
Prior art keywords
output shaft
cone surface
steering gear
tapered surface
steering wheel
Prior art date
Application number
PCT/CN2018/122134
Other languages
English (en)
Chinese (zh)
Inventor
罗冲
聂金安
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201880042748.4A priority Critical patent/CN111032505A/zh
Publication of WO2020107571A1 publication Critical patent/WO2020107571A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters
    • B64C27/12—Rotor drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D27/02—Aircraft characterised by the type or position of power plants
    • B64D27/24—Aircraft characterised by the type or position of power plants using steam or spring force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/20—Transmission of mechanical power to rotors or propellers

Definitions

  • the embodiments of the present invention generally relate to a steering gear, and in particular, to a steering gear and a drone equipped with the steering gear.
  • the steering gear is mainly composed of a housing, a circuit board, a drive motor, a reducer and a position detection element. Its working principle is that the receiver sends a signal to the steering gear, rotates the motor through the IC on the circuit board, and transmits the power through the reduction gear. To the output shaft and rudder disc.
  • the output shaft and the steering wheel are connected by a spline and a spline groove, but there is a gap between the output shaft and the steering wheel where the spline and the spline groove are connected, and the size of the gap is not easy to control .
  • the existence of the load will cause the gap to become larger and larger, affecting the normal operation of the servo.
  • a main purpose of the embodiments of the present invention is to overcome at least one of the above-mentioned defects of the prior art, and to provide a steering gear that can effectively eliminate transmission gaps.
  • Another main object of the embodiments of the present invention is to overcome at least one of the above-mentioned defects of the prior art and provide a steering gear.
  • Another main object of the embodiments of the present invention is to overcome at least one of the above-mentioned shortcomings of the prior art and provide a drone equipped with the above-mentioned steering gear.
  • a steering gear including an output shaft and a steering wheel connected to the output shaft, the output shaft has a first matching portion, and the steering wheel has a first matching portion
  • the connected second mating part, one of the first mating part and the second mating part has an outer tapered surface, and the other one has an inner tapered surface;
  • the outer tapered surface is outwardly directed toward the inner tapered surface
  • the inner cone surface is inclined in such a manner that the inner diameter increases toward the outer cone surface, the outer cone surface is in contact with the inner cone surface;
  • the steering gear further includes a locking member, the lock The tightening member is connected to the output shaft and the steering wheel.
  • the outer tapered surface and the inner tapered surface are interference fit.
  • a circumferential limiting structure is provided between the outer cone surface and the inner cone surface.
  • the circumferential limit structure is:
  • One of the outer surface of the outer tapered surface and the inner surface of the inner tapered surface is provided with at least one key slot, and the other is provided with a convex key matching the size of the at least one key slot, the convex key sliding into The direction of the keyway is at an angle of less than 90 degrees with the axis of the output shaft.
  • the locking member is a locking bolt
  • the output shaft and the steering wheel are provided with coaxial threaded holes
  • the locking bolt is connected to the output shaft and the steering wheel The threaded holes of the are engaged to lock the output shaft and the steering wheel.
  • the end of the output shaft has a blind hole-type threaded hole in the axial direction
  • the steering wheel has a through-hole type threaded hole in the axial direction
  • the locking bolt passes The two threaded holes lock the steering wheel and the output shaft.
  • the axis lines of the blind hole type threaded hole and the through hole type threaded hole coincide with the axis line of the output shaft.
  • the steering gear further includes a sloped pin that passes through the contact surface of the outer cone surface and the inner cone surface in the radial direction of the output shaft.
  • the outer cone surface is an outer cone surface
  • the inner cone surface is an inner cone surface
  • the cross-sectional curve of the cone formed on the outer peripheral surface of the first fitting portion or the second fitting portion is an isometric curve.
  • the steering gear further includes at least one expansion sleeve sleeved on the outer cone surface, the inner wall surface and the outer wall surface of the expansion sleeve are respectively in contact with the outer cone surface and the inner cone Face contact.
  • the outer cone surface is an outer cone surface
  • the inner cone surface is an inner cone surface
  • the cross-sectional curve of the cone formed on the outer peripheral surface of the first fitting portion or the second fitting portion is an isometric curve.
  • a drone including a load or propeller, a flight controller, and a steering gear according to any one of the foregoing connected to the load or propeller, the flight controller controlling The steering gear drives the load or propeller movement.
  • the outer cone surface is inclined so that the outer diameter decreases toward the inner cone surface direction
  • the inner cone surface is inclined so as to increase toward the inner diameter of the outer cone surface, the outer cone surface and the inner cone
  • Fig. 1 is a cross-sectional view of a steering gear according to an exemplary embodiment.
  • Fig. 2 is an exploded view of a steering gear according to an exemplary embodiment.
  • Fig. 3 is a perspective view of an output shaft with a keyway according to an exemplary embodiment.
  • Fig. 4 is a perspective view of a steering wheel having a convex key according to an exemplary embodiment.
  • FIG. 5 is a cross-sectional view taken along the diameter direction of the rudder disc in FIG. 4.
  • Fig. 1 is a cross-sectional view of a steering gear according to an exemplary embodiment.
  • Fig. 2 is an exploded view of a steering gear according to an exemplary embodiment.
  • Fig. 3 is a perspective view of an output shaft with a keyway according to an exemplary embodiment.
  • Fig. 4 is a perspective view of a steering wheel having a convex key according to an exemplary embodiment.
  • FIG. 5 is a cross-sectional view taken along the diameter direction of the rudder disc in FIG. 4.
  • FIG. 1 schematically shows a steering gear including an output shaft 10 and a steering wheel 20 connected to the output shaft 10.
  • steering gear provided by the embodiments of the present invention may be applied in multiple fields, such as the field of smart cars, the field of aeromodelling, or other industrial application fields.
  • the output shaft 10 has a first fitting portion 11, and correspondingly, the rudder disc 20 has a second fitting portion 21 connected to the first fitting portion 11.
  • One of the first fitting portion 11 and the second fitting portion 21 has an outer tapered surface 111, and the other one has an inner tapered surface 211.
  • the second mating portion 21 of the rudder disc 20 has an inner tapered surface 211.
  • the second mating portion 21 of the rudder disc 20 has an outer tapered surface 111.
  • first mating portion 11 having an outer tapered surface 111 and the second mating portion 21 having an inner tapered surface 211 are also applicable to the first mating portion 11 having The inner tapered surface 211 and the second fitting portion 21 have an embodiment of the outer tapered surface 111.
  • the outer tapered surface 111 is inclined so that the outer diameter decreases toward the inner tapered surface 211
  • the inner tapered surface 211 is inclined so as to increase toward the inner diameter of the outer tapered surface 111
  • the outer tapered surface 111 is in contact with the inner tapered surface 211.
  • the outer diameter of the outer tapered surface 111 refers to an outer contour cut in a direction perpendicular to the axial direction of the output shaft 10.
  • the outer contour can be circular, the outer cone surface 111 is a conical surface; the outer contour can be rectangular, the outer cone surface 111 is a quadrangular pyramid surface; the outer contour can be a polygon, the outer cone surface 111 is a polygonal pyramid surface;
  • the outer contour can also be other special shapes, which satisfy the reduced outer diameter and are tapered, and will not be described in detail here.
  • the steering gear may further include a bevel pin, and the bevel pin passes through the contact surface of the outer cone surface 111 and the inner cone surface 211 along the radial direction of the output shaft 10.
  • the bevel pin passes through the outer wall of the second fitting portion 21, the inner wall of the second fitting portion 21, and part of the first fitting portion 11 in order to prevent relative sliding between the two.
  • the steering gear further includes a locking member 30, which can be configured to be axially connected to the output shaft 10 and the steering wheel 20 described above.
  • the locking member 30 may be a bolt provided along the circumferential direction of the output shaft 10.
  • the locking member 30 may also be other axial locking structures such as rivets.
  • the outer tapered surface 111 of the first fitting portion 11 and the inner tapered surface 211 of the second fitting portion 21 are interference fit.
  • the interference fit design has the advantages of simple structure, good coaxiality, and can withstand greater axial force and torque.
  • the interference between the outer cone surface 111 and the inner cone surface 211 can reduce the circumferential load of the locking member 30 accordingly, making the connection between the output shaft 10 and the steering wheel 20 more stable, firm and without gaps, effectively eliminating the output shaft 10 Transmission gap between the steering wheel 20.
  • the outer cone surface 111 is an outer cone surface
  • the inner cone surface 211 is an inner cone surface.
  • the design of the outer conical surface and the inner conical surface makes the outer wall of the first mating portion 11 of the output shaft 10 be a cone, ensuring that the contact surfaces of the first mating portion 11 and the second mating portion 21 are inclined surfaces, eliminating the maximum The gap between the two.
  • a circumferential limiting structure is provided between the outer tapered surface 111 and the inner tapered surface 211.
  • One of the outer surface of the outer cone surface 111 and the inner surface of the inner cone surface 211 is provided with at least one key slot 112, and the other is provided with a size corresponding to at least one key slot 112.
  • the cooperating convex key 212, the direction in which the convex key 212 slides into the key groove 112 forms an angle of less than 90 degrees with the axis of the output shaft 10.
  • the outer tapered surface 111 has at least one key groove 112 and the inner tapered surface 211 has a convex key 212 matching the size of the at least one key groove 112 as an example for schematic description.
  • the embodiment of the present invention does not particularly limit the axial cross-sectional shape of the keyway 112, for example, it may be a rectangular trapezoid, a parallelogram, a triangle, or other shapes.
  • the embodiment of the present invention does not particularly limit the cross-sectional shape of the keyway 112 perpendicular to the axial direction, and the cross-sectional shape may be, for example, dovetail-shaped, rectangular, or the like.
  • the embodiment of the present invention does not particularly limit the number of keyways 112, which can be one, two, three, four, or more.
  • Those of ordinary skill in the art can determine the output shaft 10 cross-sectional size according to the torque Other factors to design the specific number of keyways 112.
  • outer cone surface 111 and the inner cone surface 211 are the outer cone surface and the inner cone surface, respectively, and have four uniformly arranged key grooves 112.
  • the above-mentioned locking member 30 may be a locking bolt, and coaxial threaded holes are formed in the output shaft 10 and the steering wheel 20.
  • the locking bolt is connected to the output shaft 10 and the steering wheel 20.
  • the threaded holes cooperate to lock the output shaft 10 and the end plate.
  • the threaded hole may be provided along the axial direction of the output shaft 10 or may be provided along the radial direction of the output shaft 10.
  • a screw hole is provided along the axial direction of the output shaft 10 as an example for illustration.
  • the end of the first fitting portion 11 of the output shaft 10 has a blind hole in the axial direction
  • the screw hole 113 of the type is provided with a through-hole type screw hole 213 in the axial direction of the steering wheel 20, and the locking bolt locks the steering wheel 20 and the output shaft 10 through the above two screw holes.
  • the axis lines of the blind hole type screw hole 113 and the through hole type screw hole 213 coincide with the axis line of the output shaft 10.
  • the cross-sectional curve of the cone formed on the outer peripheral surface of the first fitting portion 11 or the second fitting portion 21 is an equidistant curve.
  • the equidistant curve is defined as the distance between two parallel lines tangent to its contour curve is a constant.
  • the steering gear further includes at least one expansion sleeve, which is sleeved on the outer cone surface 111, and the inner wall surface and the outer wall surface of the expansion sleeve are in contact with the outer cone surface 111 and the inner cone surface 211, respectively, and the output is achieved through the expansion connection Connection of shaft 10 and rudder disc 20.
  • the number of expansion sleeves is not particularly limited.
  • the expansion sleeves simultaneously expand the output shaft 10 and the steering wheel 20 under the action of an axial force.
  • the outer cone surface 111 may be an outer cone surface
  • the inner cone surface 211 may be an inner cone surface
  • the cross-sectional curve of the cone formed on the outer peripheral surface of the first fitting portion 11 or the second fitting portion 21 is an equidistant curve.
  • An embodiment of the present invention also provides a drone, which includes a load or propeller, a flight controller, and any one of the above-mentioned steering gears connected to the above load or propeller, wherein the flight controller controls the steering gear to drive the load or the propeller to move.
  • the beneficial effect of the steering gear is that, “the outer cone surface 111 is inclined in such a manner that the outer diameter decreases toward the inner cone surface 211, and the inner cone surface 211 is oriented
  • the outer cone surface 111 is inclined in a manner of increasing the inner diameter, and the design of the outer cone surface 111 being in contact with the inner cone surface 211 makes the outer cone surface 111 closely contact the inner cone surface 211, effectively eliminating the output shaft 10 and The transmission gap between the rudder discs 20 improves the transmission efficiency.
  • the locking member 30 is used to lock the output shaft 10 and the steering wheel 20 in the axial direction, which can ensure the stability of the further connection of the two.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Steering Controls (AREA)
  • Gear Transmission (AREA)

Abstract

La présente invention concerne un moteur de direction et un véhicule aérien sans pilote. Le moteur de direction comprend un arbre de sortie (10) et un volant de direction (20) raccordé à l'arbre de sortie (10), l'arbre de sortie (10) étant doté d'une première partie d'adaptation (11), le volant de direction (20) étant doté d'une seconde partie d'adaptation (21) raccordée à la première partie d'adaptation (11), l'une de la première partie d'adaptation (11) et de la seconde partie d'adaptation (21) étant dotée d'une surface conique externe (111) et l'autre étant dotée d'une surface conique interne (211) ; la surface conique externe (111) s'incline de manière à réduire le diamètre externe en direction de la surface conique interne (211), la surface conique interne (211) s'incline de manière à augmenter le diamètre interne en direction de la surface conique externe (111) et la surface conique externe (111) est en contact avec la surface conique interne (211) ; le moteur de direction comprend en outre une pièce de verrouillage (30) et la pièce de verrouillage (30) est raccordée à l'arbre de sortie (10) et au volant de direction (20) le long de la direction axiale.
PCT/CN2018/122134 2018-11-30 2018-12-19 Moteur de direction et véhicule aérien sans pilote WO2020107571A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880042748.4A CN111032505A (zh) 2018-11-30 2018-12-19 舵机及无人机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201822001853.3 2018-11-30
CN201822001853.3U CN209274912U (zh) 2018-11-30 2018-11-30 舵机及无人机

Publications (1)

Publication Number Publication Date
WO2020107571A1 true WO2020107571A1 (fr) 2020-06-04

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PCT/CN2018/122134 WO2020107571A1 (fr) 2018-11-30 2018-12-19 Moteur de direction et véhicule aérien sans pilote

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CN (1) CN209274912U (fr)
WO (1) WO2020107571A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000072095A (ja) * 1998-09-02 2000-03-07 Engineering System Kk 共軸双ロータ形ヘリコプタ
CN107074368A (zh) * 2016-04-01 2017-08-18 深圳市大疆创新科技有限公司 锁定装置、螺旋桨、电机、动力套装及无人飞行器
CN206417195U (zh) * 2016-11-24 2017-08-18 深圳市大疆创新科技有限公司 螺旋桨及其锁紧机构、电机、动力组件和无人飞行器
CN207450225U (zh) * 2017-10-16 2018-06-05 嘉兴中创航空技术有限公司 一种新型无人直升机舵机支架
CN208233359U (zh) * 2018-05-04 2018-12-14 深圳市大疆创新科技有限公司 动力套装

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000072095A (ja) * 1998-09-02 2000-03-07 Engineering System Kk 共軸双ロータ形ヘリコプタ
CN107074368A (zh) * 2016-04-01 2017-08-18 深圳市大疆创新科技有限公司 锁定装置、螺旋桨、电机、动力套装及无人飞行器
CN206417195U (zh) * 2016-11-24 2017-08-18 深圳市大疆创新科技有限公司 螺旋桨及其锁紧机构、电机、动力组件和无人飞行器
CN207450225U (zh) * 2017-10-16 2018-06-05 嘉兴中创航空技术有限公司 一种新型无人直升机舵机支架
CN208233359U (zh) * 2018-05-04 2018-12-14 深圳市大疆创新科技有限公司 动力套装

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