TWI821744B - Tail drive system for unmanned helicopters - Google Patents

Abstract

A tail transmission system for an unmanned helicopter, including: a main tail rod; a driving part connected to the main tail rod, the driving part including: a brushless motor device; and a tail rotor part connected to the brushless motor device ; wherein the brushless motor device drives the tail rotor portion so that the tail rotor portion rotates around an axial direction of the brushless motor device.

Description

Tail drive system for unmanned helicopters

The present invention relates to a tail transmission system for an unmanned helicopter, and in particular to a tail transmission system for an unmanned helicopter that can reduce or avoid damage by sand, gravel and dust.

The tail drive system of traditional unmanned helicopters all use transmission tail rotors. This transmission tail rotor uses a mechanical mechanism to drive the tail rotor. Its mechanism is complex and has a considerable number of parts. Therefore, when a traditional unmanned helicopter performs flight missions in an environment with a lot of sand, gravel and dust, the sand, gravel or dust in the environment can easily enter the tail transmission system and wear or block various parts of the tail transmission system. In the long run, it will As a result, the service life of the tail transmission system is greatly shortened, and users must frequently replace or clean related parts of the tail transmission system. This will significantly increase the cost of parts replacement and maintenance time of the unmanned helicopter. In view of this, there will be a need for a tail drive system for unmanned helicopters that can reduce or avoid damage from sand, gravel and dust.

In order to solve the above problems, one idea of the present invention is to provide a tail transmission system for an unmanned helicopter that can reduce or avoid damage from sand, gravel and dust.

Based on the foregoing concept, the present invention provides a tail transmission system for an unmanned helicopter, including: a main tail rod; a driving part connected to the main tail rod, the driving part including: a brushless motor device; and a tail rotor part, connect the brushless motor Device; wherein the brushless motor device drives the tail rotor portion so that the tail rotor portion rotates around an axial direction of the brushless motor device.

In a preferred embodiment of the present invention, the main tail boom includes: a first tail boom part; a tail boom connecting part connected to the first tail boom part; and a second tail boom part connected to the tail boom The connecting part and the driving part; wherein the second tail rod part is connected to the first tail rod part in a pivotable manner relative to the first tail rod part through the tail rod connecting part.

In a preferred embodiment of the present invention, the tail boom connection part includes: a first connection part connected to the first tail boom part; a second connection part connected to the second tail boom part; and a pivot. part, connecting the first connecting part and the second connecting part; wherein the second connecting part is connected to the first connecting part in a pivotable manner relative to the first connecting part through the pivoting part.

In a preferred embodiment of the present invention, the tail rod connecting part includes: a fixing part connected to the first connecting part and detachably connected to the second connecting part; wherein the fixing part makes the second connecting part The connecting part is fixed relative to the first connecting part, and fixes a second axial direction of the second tail boom part in a first axial direction of the first tail boom part.

In a preferred embodiment of the present invention, the pivoting part is provided on a first side of the tail boom connection part, and the fixing part is provided on a second side of the tail boom connection part opposite to the first side. .

In a preferred embodiment of the present invention, the tail rod connecting part includes: a fixing part connected to the second connecting part and detachably connected to the first connecting part; wherein the fixing part makes the second connecting part The connecting part is fixed relative to the first connecting part, and fixes a second axial direction of the second tail boom part in a first axial direction of the first tail boom part.

In a preferred embodiment of the present invention, the pivoting part is provided on a first side of the tail boom connection part, and the fixing part is provided on a second side of the tail boom connection part opposite to the first side. .

In a preferred embodiment of the present invention, the driving part includes a connecting device connected to the brushless motor device, and the main and tail rods are extended and fixed in the connecting device.

In a preferred embodiment of the present invention, the tail transmission system further includes: a control device; and a control wire connecting the control device and the brushless motor device; wherein the control device controls the control wire through the control wire. A driving speed of the brushless motor device for the tail rotor portion.

In a preferred embodiment of the present invention, the control wire extends into the main and tail boom.

The foregoing aspects and other aspects of the present invention will become more apparent based on the following detailed description of non-limiting specific embodiments and with reference to the accompanying drawings.

100: Tail transmission system

110: Main and tail rod

112:First tail rod part

114: Tail rod connection part

116:Second tail rod part

120:Drive Department

122:Connection device

124: Brushless motor device

126:Rotating shaft part

200: Main and tail rod

220:First tail rod part

222: First axis

240: Tail rod connection part

242:First connection part

244: Pivot part

246: Second connection part

248:Fixed part

260:Second tail rod part

262: Second axis

300:Drive Department

320:Connection device

322:Channel

324:Channel

340: Brushless motor device

342:Rotating shaft part

360: Tail rotor section

802~808: Locking components

922~926: Locking components

962~968: Locking components

The first figure is a structural diagram of a specific embodiment of the tail transmission system of the present invention.

The second figure is a structural diagram of a specific embodiment of the main tail boom.

The third figure is an architectural diagram of a specific embodiment of the driving unit.

Please refer to the first figure, which illustrates a structural diagram of a specific embodiment of the tail transmission system of the present invention. As shown in the first figure, the tail transmission system 100 for an unmanned helicopter includes a main tail boom 110 and a driving part 120 , and the driving part 120 is connected to the main tail boom 110 . The main tail boom 110 includes a first tail boom part 112 and a tail boom connecting part 114 and a second tail boom portion 116 . The tail boom connecting part 114 connects the first tail boom part 112 and the second tail boom part 116 , and the second tail boom part 116 connects to the driving part 120 . The second tail boom part 116 is pivotally connected to the first tail boom part 112 through the tail boom connecting part 114 . That is, the second tail boom portion 116 can pivot relative to the first tail boom portion 112 through the tail boom connection portion 114 . The driving part 120 includes a connection device 122, a brushless motor device 124 and a tail rotor part (not shown). The connecting device 122 is connected to the second tail boom portion 116 of the main tail boom 110 , the brushless motor device 124 is connected to (or installed on) the connecting device 122 , and the tail rotor portion is connected to (or installed on) the rotating shaft portion of the brushless motor device 124 126 on. Preferably, the second tail rod portion 116 of the main tail rod 110 can be extended and fixed in the connecting device 122 . In the embodiment shown in the first figure, the brushless motor device 124 can drive the tail rotor portion to rotate around an axial direction of the brushless motor device 124 (ie, the axial direction of the rotating shaft portion 126), thereby adjusting the flight direction of the unmanned helicopter. Or adjust the direction the fuselage is facing.

In a specific embodiment, the tail drive system 100 further includes a control device and control wires. The control wire connects the control device and the brushless motor device 124, and the control device can control the driving speed of the brushless motor device 124 on the tail rotor part through the control wire. Preferably, the control wires can be extended and disposed inside the main tail rod 110 . However, it should be understood that the control wires may also be disposed outside the main and tail rods 110 as required. In a specific embodiment, the control device regulates the current input to the brushless motor device 124 through the control wire, thereby controlling the driving speed of the brushless motor device 124 . In a specific embodiment, the control wires include three cable lines, and the control device controls the current input to the brushless motor device 124 through these three cable lines.

In a specific embodiment, the driving part 120 is a modular component, so when any part of the driving part 120 is damaged, the user can directly replace the entire set of driving parts. 120 without having to replace or repair only a single component in the driving part 120. This modular approach can significantly reduce replacement time, thereby avoiding delays in the unmanned helicopter's subsequent flight missions. In addition, this modular approach makes the replacement operation relatively simple and can be performed independently by ordinary users. In a specific embodiment, the tail transmission system 100 is a modular component (whether this modular component must include a control device depends on the requirements), so when any part of the tail transmission system 100 is damaged, use The user can directly replace the entire tail transmission system 100 without having to replace or repair only a single component in the tail transmission system 100 . This modular approach can significantly reduce replacement time, thereby avoiding delays in the unmanned helicopter's subsequent flight missions. In addition, the replacement operation of this modular approach is relatively simple and can be performed independently by ordinary users (it should be understood that if only a single component is replaced, in addition to the more complicated replacement procedures, additional parts adjustment operations are required. These The process must be performed by the maintenance technician of the unmanned helicopter). In a specific embodiment, the control device may not be included in the modular tail transmission system, but the control device may be provided on the body of the unmanned helicopter. In this way, when the user replaces the modular tail drive system, he only needs to fix the tail drive system to the body and connect the control wires to the control device.

Please refer to the second figure, which illustrates an architectural diagram of a specific embodiment of the main and tail booms. As shown in the second figure, the main tail boom 200 includes a first tail boom part 220 , a tail boom connecting part 240 and a second tail boom part 260 . The tail boom connecting part 240 connects the first tail boom part 220 and the second tail boom part 260 , and the second tail boom part 260 can be pivoted relative to the first tail boom part 220 through the tail boom connecting part 240 Connect the first tail rod part 220. The tail boom connection part 240 includes a first connection part 242 , a pivot part 244 , a second connection part 246 and a fixed part 248 . The first tail rod part 220 can be connected to the first connection part 242, and the first tail rod part 220 can be locked to the first connecting part 242 through the locking elements 922, 924, and 926. The second tail rod part 260 can be connected to the second connecting part 246, and the second tail rod part 260 can be locked to the second connecting part 246 through the locking elements 962, 964, 966, 968. The pivoting part 244 connects the first connecting part 242 and the second connecting part 246 , and the second connecting part 246 can be connected to the first connecting part 242 in a pivotable manner relative to the first connecting part 242 through the pivoting part 244 . That is, the second connecting part 246 can pivot relative to the first connecting part 242 through the pivoting part 244 .

In the embodiment shown in the second figure, the fixing part 248 is connected to (or installed on) the second connecting part 246 , and the fixing part 248 is detachably connected to (or locked on) the first connecting part 242 . When the fixing part 248 is not locked to the first connecting part 242, the second connecting part 246 can pivot relative to the first connecting part 242 through the pivoting part 244. When the fixing part 248 is locked to the first connecting part 242, the second connecting part 246 cannot pivot relative to the first connecting part 242 through the pivoting part 244. At this time, the fixing part 248 fixes the second connecting part 246 relative to the first connecting part 242 and fixes the second axial direction 262 of the second tail rod part 260 to the first axial direction 222 of the first tail rod part 220 superior. In this way, the second axial direction 262 is substantially parallel to the first axial direction 222 . Preferably, the pivoting portion 244 of the tail boom connecting portion 240 is disposed on a first side of the tail boom connecting portion 240 , and the fixing portion 248 is disposed on a first side of the tail boom connecting portion 240 opposite to the first side. Two sides, as shown in the second picture.

It should be understood that the arrangement of the fixing portion 248 may also be different from that shown in the second figure. In a specific embodiment, the fixing part 248 is connected to (or installed on) the first connecting part 242 , and the fixing part 248 is detachably connected to (or locked on) the second connecting part 246 . When the fixing part 248 is not locked to the second connecting part 246, the second connecting part 246 can pivot relative to the first connecting part 242 through the pivoting part 244. And when the fixed part 248 is locked on When the second connecting portion 246 is configured, the second connecting portion 246 cannot pivot relative to the first connecting portion 242 through the pivoting portion 244 . At this time, the fixing part 248 fixes the second connecting part 246 relative to the first connecting part 242 and fixes the second axial direction 262 of the second tail rod part 260 to the first axial direction 222 of the first tail rod part 220 superior. In this way, the second axial direction 262 is substantially parallel to the first axial direction 222 . Preferably, the pivoting portion 244 of the tail boom connecting portion 240 is disposed on a first side of the tail boom connecting portion 240 , and the fixing portion 248 is disposed on a first side of the tail boom connecting portion 240 opposite to the first side. Two sides.

Please refer to the third figure, which illustrates the architecture diagram of a specific embodiment of the driving unit. As shown in the third embodiment, the driving part 300 includes a connecting device 320, a brushless motor device 340 and a tail rotor part 360. The brushless motor device 340 can be locked on the connection device 320 through the locking components 802, 804, 806, and 808. The tail rotor portion 360 can be connected to the rotating shaft portion 342 of the brushless motor device 340 , and the brushless motor device 340 can drive the tail rotor portion 360 so that the tail rotor portion 360 rotates around an axial direction of the brushless motor device 340 . The connecting device 320 has channels 322 and 324, and the main tail rod of the tail drive system can extend through the channels 322 and 324 to be connected and fixed (or locked) in the connecting device 320.

It should be understood that the traditional tail drive system uses a transmission motor and uses a mechanical mechanism to control the tail rotor. This control method requires the tail drive system to have an extremely complex mechanical structure and must have an extremely large number of mechanical components. In an environment with a lot of sand, gravel, and dust, too many mechanical components will cause the components to be easily worn by sand, gravel, and dust, which will greatly shorten the service life of the tail transmission system. In comparison, the tail drive system of the present invention uses a brushless motor device (brushless motors are known in the industry to have dust-proof and waterproof properties), and the tail drive system of the present invention controls the brushless motor through electrical control. device to drive the tail rotor section, so there is no Requires too many mechanical components. This arrangement of the tail transmission system of the present invention will make the unmanned helicopter suitable for environments with a lot of sand, gravel and dust, and will not significantly shorten the service life of the tail transmission system due to sand, gravel and dust in the environment. In a specific embodiment, the tail transmission system of the present invention is used for a single-rotor unmanned helicopter.

So far, the tail transmission system of the present invention for an unmanned helicopter has been explained based on the above description and drawings. However, it should be understood that each specific embodiment of the present invention is for illustration only, and various changes can be made without departing from the patent scope and spirit of the present invention, and all should be included in the patent scope of the present invention. Therefore, the specific embodiments described in this specification are not intended to limit the invention, and the true scope and spirit of the invention are disclosed in the following patent applications.

100: Tail transmission system

110: Main and tail rod

112:First tail rod part

114: Tail rod connection part

116:Second tail rod part

120:Drive Department

122:Connection device

124: Brushless motor device

126:Rotating shaft part

Claims (8)

A tail transmission system for an unmanned helicopter, including: a main tail rod; a driving part connected to the main tail rod, the driving part including: a brushless motor device; and a tail rotor part connected to the brushless motor device ; wherein the brushless motor device drives the tail rotor portion so that the tail rotor portion rotates around an axial direction of the brushless motor device; wherein the tail rotor transmission system further includes: a control device; and a control wire, The control device and the brushless motor device are connected; wherein the control device controls a driving speed of the brushless motor device to the tail rotor portion through the control wire; wherein the control wire extends and is provided in the main tail boom. The tail wing transmission system of claim 1, wherein the main tail boom includes: a first tail boom part; a tail boom connecting part connected to the first tail boom part; and a second tail boom part connected to the tail boom connection part and the driving part; wherein the second tail rod part is connected to the first tail rod part in a pivotable manner relative to the first tail rod part through the tail rod connecting part. The tail wing transmission system of claim 2, wherein the tail boom connection part includes: a first connection part connected to the first tail boom part; a second connection part connected to the second tail boom part; and a pivot part , connect the first connecting part and the second connecting part; The second connecting part is connected to the first connecting part in a pivotable manner relative to the first connecting part through the pivoting part. The tail wing transmission system of claim 3, wherein the tail boom connecting part includes: a fixing part connected to the first connecting part and detachably connected to the second connecting part; wherein the fixing part makes the second connecting part The part is fixed relative to the first connecting part, and a second axial direction of the second tail boom part is fixed in a first axial direction of the first tail boom part. The tail wing transmission system of claim 4, wherein the pivot part is provided on a first side of the tail boom connection part, and the fixing part is provided on a second side of the tail boom connection part opposite to the first side. The tail wing transmission system of claim 3, wherein the tail boom connection part includes: a fixed part connected to the second connecting part and detachably connected to the first connecting part; wherein the fixed part makes the second connecting part The part is fixed relative to the first connecting part, and a second axial direction of the second tail boom part is fixed in a first axial direction of the first tail boom part. The tail wing transmission system of claim 6, wherein the pivoting part is provided on a first side of the tail boom connection part, and the fixing part is provided on a second side of the tail boom connection part opposite to the first side. The tail wing transmission system of claim 1, wherein the driving part includes a connecting device, the connecting device is connected to the brushless motor device, and the main tail rod is extended and fixed in the connecting device.