CN110127031B - Folding assembly and unmanned aerial vehicle - Google Patents
Folding assembly and unmanned aerial vehicle Download PDFInfo
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- CN110127031B CN110127031B CN201910458530.3A CN201910458530A CN110127031B CN 110127031 B CN110127031 B CN 110127031B CN 201910458530 A CN201910458530 A CN 201910458530A CN 110127031 B CN110127031 B CN 110127031B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/30—Parts of fuselage relatively movable to reduce overall dimensions of aircraft
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Abstract
The invention discloses a folding assembly and an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. The folding assembly comprises a first folding piece and a second folding piece which are connected through a pin joint structure, wherein a rotating groove is formed in the side wall of the first folding piece, and when the second folding piece rotates to be abutted against the side wall of the rotating groove, the folding assembly is in a maximum folding state; the outer wall of the first folding piece is provided with an accommodating groove which is communicated with the rotating groove and used for accommodating part of the side wall of the second folding piece. An unmanned aerial vehicle, including above-mentioned folding subassembly. The folding assembly provided by the invention realizes folding in a large angle range through the arrangement of the rotating groove and the accommodating groove, simplifies the installation steps, reduces the system virtual position and is beneficial to improving the flight stability of the unmanned aerial vehicle; the folding assembly provided by the invention has a simple structure, is particularly suitable for folding the small-pipe-diameter arm at a large angle, simplifies the manufacturing cost and reduces the occupation of space.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a folding assembly and an unmanned aerial vehicle.
Background
The unmanned aerial vehicle has the advantages of being flexible, light and capable of hovering at will, loads such as a camera and an infrared imager are carried on the unmanned aerial vehicle, and wide application in the fields of public safety, aerial photography investigation, monitoring and the like can be achieved. However, the unfolding size of the unmanned aerial vehicle arm is overlarge, which brings trouble to transportation and storage of the unmanned aerial vehicle and increases the use cost, so that the foldable arm has important significance for improving portability of the unmanned aerial vehicle.
The folding of horn adopts folding subassembly to realize generally, and folding subassembly one part is connected with interior horn, and another part is connected with outer horn, and interior horn and outer horn realize the reduction of whole size through folding of folding subassembly. However, most of folding assemblies adopted in the industry currently adopt pin shaft plug-in structures or other complex mechanisms. For the pin shaft pulling and inserting structure, the pin shaft and accessory components thereof are easy to lose due to frequent repeated pulling and inserting processes, once spare parts are not available on the use site, serious losses can be caused, and the pin shaft pulling and inserting mode has larger assembly gaps, system virtual positions are generated, and the overall stability of the unmanned aerial vehicle is affected.
For a folding component of a complex mechanism, the range of the folding angle which can be realized when the folding component is used on a large-pipe-diameter horn is larger, but the application of the folding component of the complex mechanism on a small-pipe-diameter horn is limited. Aiming at the small-pipe-diameter horn, the design of the folding assembly exceeding 90 degrees is externally arranged on the rotating shaft, so that no matter the horn is in a straightening state or a folding state, the rotating shaft part is exposed at the periphery of the horn, and the folding assembly is not attractive and occupies a larger space; the folding component arranged in the rotating shaft with the angle smaller than 90 degrees has no significance for folding and shrinking the horn.
Accordingly, there is a need to provide a folding assembly and a unmanned aerial vehicle that solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a folding assembly which can finish large-angle folding of a small-pipe-diameter horn, and can ensure occupation of a small space and reduce generation of system virtual positions.
The invention further aims at providing the unmanned aerial vehicle, wherein the horn of the unmanned aerial vehicle can be folded at a large angle, and the unmanned aerial vehicle is convenient to carry and store.
In order to achieve the above object, the following technical scheme is provided:
The utility model provides a folding subassembly, folding subassembly includes first folding piece and the second folding piece of being connected through pin joint structure, the rotation groove has been seted up on the lateral wall of first folding piece, works as the second folding piece rotate to with the lateral wall butt in rotation groove, folding subassembly is in the biggest folding state.
Preferably, the outer wall of the first folding member is further provided with a containing groove, the containing groove is communicated with the rotating groove, and the containing groove is used for containing part of the side wall of the second folding member.
Preferably, the accommodating groove is formed with a first folding surface on an outer wall of the first folding member; the first folding surface comprises a first sub-plane and a second sub-plane which are arranged in an included angle;
The outer wall of the second folding piece is provided with a second folding surface, and the second folding surface comprises a third sub-plane and a fourth sub-plane which are arranged in an included angle;
When the second folding piece rotates to be abutted to the side wall of the rotating groove, the first sub-plane and the third sub-plane are parallel to each other and are arranged at intervals, and the second sub-plane and the fourth sub-plane are parallel to each other and are arranged at intervals.
Preferably, two support bosses are provided at the end of the first folder; the end part of the second folding piece is provided with a rotating boss, and the rotating boss is rotationally arranged between the two supporting bosses through a rotating shaft;
The rotating boss can be accommodated in the rotating groove and is abutted against the side wall of the rotating groove.
Preferably, the folding assembly further comprises a fastener sleeved on the periphery of the second folding piece; the inner wall of the fastener is provided with internal threads; an external thread is arranged on the outer wall of the first folding piece;
when the first folding piece and the second folding piece are in a complete unfolding state, the fastening piece moves towards the first folding piece and is arranged on the periphery of the joint of the first folding piece and the second folding piece through the threaded fit of the internal threads and the external threads.
Preferably, a positioning boss is arranged at the periphery of the second folding piece; the inner wall of the fastener is provided with a positioning step, and the end face of the positioning boss can be abutted with the step face of the positioning step.
Preferably, the inner wall of the fastener is further provided with a calibration step, the calibration step is arranged between the positioning step and the internal thread, and the inner diameter of the fastener gradually decreases after passing through the calibration step and the positioning step in sequence; the locating boss is located at the alignment step when the fastener is moved to be threadedly engaged with the first folding member.
Preferably, a first positioning plate is arranged on the first folding piece, and the first positioning plate protrudes out of the end face of the first folding piece; the second folding piece is provided with a second positioning plate, and the second positioning plate protrudes out of the end face of the second folding piece;
When the first folding piece and the second folding piece are in a complete unfolding state, the first positioning plate is abutted with the second positioning plate.
Preferably, one of the first positioning plate and the second positioning plate is provided with a groove, and the other one of the first positioning plate and the second positioning plate is provided with a protrusion, and when the first positioning plate is abutted to the second positioning plate, the protrusion is clamped with the groove.
A drone comprising a folding assembly as claimed in any one of the preceding claims.
Compared with the prior art, the invention has the beneficial effects that:
The folding assembly provided by the invention realizes folding in a large angle range through the arrangement of the rotating groove and the accommodating groove, does not need to use a traditional pin shaft for frequent pulling and inserting, and simplifies the installation steps; meanwhile, the installation gap of the folding assembly is small, the system virtual position is reduced, and the flying stability of the unmanned aerial vehicle is improved; the folding assembly provided by the invention has a simple structure, is particularly suitable for folding the small-pipe-diameter arm at a large angle, simplifies the manufacturing cost and reduces the occupation of excessive space.
Drawings
FIG. 1 is an exploded view of a folding assembly in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a folding assembly in a fully unfolded state according to an embodiment of the present invention;
FIG. 3 is a schematic view of a fastener in a fastened state according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of the A-A plane of FIG. 3;
FIG. 5 is a schematic view of a folding assembly according to an embodiment of the present invention in a folded state;
FIG. 6 is a schematic view of a folding assembly in a maximally folded condition according to an embodiment of the present invention;
FIG. 7 is an enlarged partial schematic view at B in FIG. 6;
FIG. 8 is a schematic view of a first folding member according to an embodiment of the present invention;
FIG. 9 is a schematic view of a first folder at a second view angle according to an embodiment of the present invention;
FIG. 10 is a schematic view of a second folder according to an embodiment of the present invention;
FIG. 11 is a schematic view of a second folding member according to an embodiment of the present invention;
FIG. 12 is a schematic view of a fastener according to an embodiment of the present invention from a first perspective;
FIG. 13 is a schematic view of a fastener according to an embodiment of the present invention from a second perspective;
fig. 14 is a cross-sectional view of the C-C plane of fig. 13.
Reference numerals:
1-a first fold; 11-a first closing plate; 12-supporting the boss; 13-a rotating groove; 14-a receiving groove; 15-a first fold surface; 151-a first facet; 152-a second split plane; 16-a first positioning plate; 161-grooves; 17-external threads;
2-a second fold; 21-a second closure panel; 22-rotating the boss; 23-a second positioning plate; 231-bump; 24-positioning a boss; 25-a second fold surface; 251-a third facet; 252-fourth facet; 26-a weight-reducing through groove;
3-rotating shaft;
4-a fastener; 41-internal threads; 42-positioning the step; 43-calibrating the step; 44-gasket groove; 45-anti-skid grooves.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present embodiment discloses a folding assembly, as shown in fig. 1-5, comprising two folding members and a fastener 4, in particular two folding members comprising a first folding member 1 and a second folding member 2 connected by a pivot structure. When the first folding piece 1 and the second folding piece 2 are in an unfolding state, the fastening piece 4 is sleeved on the periphery of the joint of the first folding piece 1 and the second folding piece 2, so that the first folding piece 1 and the second folding piece 2 are prevented from rotating mutually; and the fastener 4 is loosened, so that the fastener 4 is far away from the joint of the first folding piece 1 and the second folding piece 2, and the second folding piece 2 can rotate a certain angle relative to the first folding piece 1 to finish folding.
In order to realize the relative rotation of the first folding member 1 and the second folding member 2 so as to achieve a folding state, the pivoting structure comprises a rotating shaft 3, wherein the rotating shaft 3 is arranged on one folding member, and the other folding member is rotationally connected to the rotating shaft 3 so as to realize the relative rotation of the two folding members. In this embodiment, the rotating shaft 3 is mounted on the first folding member 1, and the second folding member 2 rotates relative to the first folding member 1 around the rotating shaft 3.
Specifically, as shown in fig. 8 to 9, the first folding member 1 has a circular tubular structure, one end of which is provided with a completely open opening, and the other end of which forms a semi-closed opening through the first closing plate 11; the first closing plate 11 is optionally provided integrally formed with the first folder 1 to increase the overall strength of the first folder 1. As shown in fig. 10 to 11, the second folding member 2 is also of a circular tubular structure, one end of which is provided with a completely open opening, and the other end of which forms a semi-closed opening through the first closing plate 21; like the first folder 1, the second closing plate 21 is optionally provided integrally formed with the second folder 2 to improve the overall strength of the second folder 2.
Two support bosses 12 are arranged on the first closing plate 11 along the axial direction of the first folding piece 1, and the two support bosses 12 are parallel to each other and are arranged at intervals, namely a first support boss and a second support boss; the second closing plate 21 is provided with a rotation boss 22 along the axis direction of the second folding member 2, and the rotation boss 22 is provided with a through hole for the rotation shaft 3 to pass through. In specific implementation, the rotating boss 22 is disposed in a space between the two supporting bosses 12, the rotating shaft 3 sequentially passes through the first supporting boss, the through hole of the rotating boss 22 and the second supporting boss, and the rotating boss 22 can rotate relative to the supporting boss 12, so that the relative rotation of the first folding piece 1 and the second folding piece 2 is realized. The folding assembly of this embodiment adopts fixed pivot formula folding, and the fit clearance between pivot 3 and the through-hole of rotating boss 22, between rotating boss 22 and the support boss 12 is controlled at 0.03-0.08mm, and wherein is preferably 0.05mm, when guaranteeing to rotate smooth, reduces the system virtual position because the clearance is too big, has also avoided following the displacement in folding piece axis direction, improves the stability of the device that uses this folding assembly. In order to improve the overall strength of the folding assembly, the supporting boss 12 in this embodiment is vertically disposed on the first closing plate 11, and is integrally formed with the first closing plate 11; the rotating boss 22 is also vertically disposed on the second closing plate 21, and is also integrally formed with the second closing plate 21.
In this embodiment, the supporting boss 12 is optionally a supporting ear seat, the supporting ear seat is provided with a through hole, and axes of the through holes on the two supporting ear seats are mutually overlapped; the rotating boss 22 is optionally a connecting ear seat, and the axis of a through hole of the connecting ear seat and the axis of a through hole of the supporting ear seat can be overlapped; in order to improve the connection strength of the connecting lug seat, the supporting lug seat and the corresponding folding piece and improve the bearing capacity of the rotating shaft 3, the supporting lug seat and the connecting lug seat are designed in a wedge-shaped structure. The shaft 3 is optionally a sleeve screw.
As shown in fig. 9, in order to achieve a wide range of folding of the second folding member 2 relative to the first folding member 1, a rotation groove 13 is provided on a side wall of the first folding member adjacent to the two support bosses 12 for accommodating the rotation boss 22, providing a movable space for the rotation boss 22, and eliminating the obstruction of the rotation boss 22. The rotating groove 13 is provided through the side wall of the first folder 1 and communicates with the space between the two support bosses 12. When the second folding member 2 is folded about the rotation shaft 3 until the rotation boss 22 abuts against the side wall of the rotation groove 13, the second folding member 2 is in a maximally folded state, and the second folding member 2 is folded at a maximum angle range of 130 ° to 140 ° with respect to the first folding member 1, and the maximum folding angle in this embodiment is optionally set to 135 °.
In addition, due to the limitation of the size of the folded member, when the rotation boss 22 is rotated into the rotation groove 13 at a large angle, interference occurs between the outer walls of the first folded member 1 and the second folded member 2, and in order to eliminate the interference between the outer walls of the folded members, as shown in fig. 7 and 9, the accommodating groove 14 is formed in the outer wall of the first folded member 1 located at one side of the rotation groove 13, and the accommodating groove 14 is communicated with the rotation groove 13, and when the rotation boss 22 moves in the rotation groove 13, the accommodating groove 14 can be used to accommodate a portion of the side wall of the second folded member 2 so as not to interfere.
In this embodiment, the accommodating groove 14 is formed on the outer wall of the first folding member 1, and a first folding surface 15 is formed on the outer wall of the first folding member 1, as shown in fig. 9, the first folding surface 15 includes a first sub-plane 151 and a second sub-plane 152 that are disposed at an included angle, where the first sub-plane 151 is disposed at an included angle with the axis of the first folding member 1, and the second sub-plane 152 is disposed parallel to the axis of the first folding member 1. Correspondingly, a second folding surface 25 is arranged on the outer wall of the second folding piece 2, which is positioned at one side of the rotating boss 22, as shown in fig. 11, the second folding surface 25 comprises a third sub-plane 251 and a fourth sub-plane 252 which are arranged at an included angle, wherein the third sub-plane 251 and the axis of the second folding piece 2 are mutually parallel, and the fourth sub-plane 252 and the axis of the second folding piece 2 are arranged at an included angle; as shown in fig. 6 to 7, when the second folder 2 is folded about the rotation shaft 3 until the rotation boss 22 abuts against the side wall of the rotation groove 13, the second folder 2 is in a maximally folded state, and at this time, the first sub-plane 151 and the third sub-plane 251 are disposed parallel to each other with a slight gap, and the second sub-plane 152 and the fourth sub-plane 252 are disposed parallel to each other with a slight gap. The arrangement of the folding surface keeps the beauty of the folding assembly in the folding state, reduces the slotting size of the containing groove 14 and the rotating groove 13 as much as possible, improves the strength of the folding piece, reduces the system virtual position and ensures the compactness of the folding assembly.
In this embodiment, since the maximum folding angle is optionally set to 135 °, the first facet 151 is optionally set to an angle of 135 ° with respect to the axis of the first folding member 1, and the angle between the first facet 151 and the second facet 152 is also 135 °; the fourth facet 252 is optionally arranged at an angle of 135 ° with respect to the axis of the second folder 2, the angle between the third facet 251 and the fourth facet 252 also being 135 °.
As can be seen from the above, the folding and unfolding actions of the folding assembly can be realized by the rotation of the second folding member 2 relative to the first folding member 1; when the axes of the first folding piece 1 and the second folding piece 2 are overlapped, the folding assembly is in a fully unfolded state, and at the moment, the semi-closed opening of the first folding piece 1 is opposite to the semi-closed opening of the second folding piece 2 and is communicated, and meanwhile, the first folding surface 15 and the second folding surface 25 are far away from each other; when the first folding member 1 and the second folding member 2 are disposed at a certain angle, the folding assembly is in a folded state, the semi-closed openings of the two are far away from each other, and the first folding surface 15 and the second folding surface 25 are close to each other.
As shown in fig. 5, in order to ensure that when the first folding member 1 and the second folding member 2 are fully unfolded, the axes of the two are exactly coincident, and meanwhile, the second folding member 2 is prevented from being excessively unfolded, reverse folding towards the semi-closed opening of the first folding member 1 occurs, a first positioning plate 16 is arranged at the semi-closed opening end of the first folding member 1, and the first positioning plate 16 is arranged at one side of the semi-closed opening end, where the first closing plate 11 is not arranged; the first positioning plate 16 protrudes from the end face of the first folding member 1, and the first positioning plate 16 is optionally formed by extending part of the pipe wall of the first folding member 1 along the axis of the first folding member 1; the semi-closed opening end of the second folding piece 2 is provided with a second positioning plate 23, and the second positioning plate 23 is arranged on one side of the semi-closed opening end, on which the second closing plate 21 is not arranged; the second positioning plate 23 protrudes from the end face of the second folder 2, and the second positioning plate 23 is optionally formed by extending part of the tube wall of the second folder 2 along the axis of the second folder 2. As shown in fig. 2, when the second folder 2 rotates until the axes of the two folders overlap each other, the first positioning plate 16 abuts against the second positioning plate 23, thereby preventing further rotation of the second folder 2 and preventing excessive deployment.
Further, the first positioning plate 16 is provided with a groove 161, the second positioning plate 23 is provided with a protrusion 231, and when the first positioning plate 16 is abutted with the second positioning plate 23, the protrusion 231 is just clamped in the groove 161, so that the effect of further positioning the first folding piece 1 and the second folding piece 2 is achieved, and the mutual coincidence of the axes of the first folding piece 1 and the second folding piece is ensured; simultaneously, two locating plates are engaged through the clamping mode, so that the contact area is increased, and the stress of the rotating shaft 3 is further shared. Such as: when the folding assembly is in a vertical state, one of the folding members is necessarily required to bear the pressure generated by gravity of the other folding member above the folding member, and the arrangement can enable the acting force between the second folding member 2 and the first folding member 1 to be distributed on the contact surface of the first positioning plate 16 and the second positioning plate 23, so that the bearing pressure of the rotating shaft 3 is reduced, and the service life of the whole folding member is prolonged. In particular, the groove may be formed on the second positioning plate 23, and the protrusion may be formed on the first positioning plate 16, or other fastening structures may be adopted, so long as the first positioning plate 16 and the second positioning plate 23 can complete engagement in the unfolded state of the folding assembly. In addition, when there is a certain gap between the side wall of the rotating boss 22 and the side wall of the supporting boss 12, if there is no engagement between the protrusion 231 and the groove 161, the two folded members are easy to relatively deviate after being unfolded, resulting in dislocation, so that the axes of the folded members cannot be aligned precisely, and therefore, the engagement between the protrusion 231 and the groove 161 can also play a role in limiting the dislocation between the two folded members.
After the first folding member 1 and the second folding member 2 are completely unfolded, in order to keep the two folding members in an unfolded state all the time, the second folding member 2 is prevented from being folded relatively, and the fastening member 4 is arranged at the periphery of the joint of the first folding member 1 and the second folding member 2. In this embodiment, the fastener 4 is provided on the periphery of the folder by a screw structure. Specifically, as shown in fig. 12-14, the fastening member 4 is a hollow circular tube structure, both ends of the fastening member are provided with completely open openings, the inner wall of the fastening member 4 is provided with internal threads 41, correspondingly, the outer wall of one of the two folding members is provided with external threads 17, and the fastening member 4 is tightly arranged on the periphery of the joint of the folding members through locking fit between the internal threads 41 and the external threads 17. In this embodiment, the external thread 17 is optionally disposed on the outer wall of the first folder 1, the internal thread 41 is disposed on the inner wall of the fastener 4 near the opening at one end, and one end of the fastener 4 where the internal thread 41 is disposed near the first folder 1, and the other end where the internal thread 41 is not disposed is disposed away from the first folder 1. As shown in fig. 5, when folded, the fastener 4 is sleeved on the periphery of the second folding piece 2; as shown in fig. 3-4, during fastening, the fastener 4 slides along the axis of the folded piece towards the first folded piece 1, when the internal thread 41 and the external thread 17 are mutually matched and meshed, the pipe body of the fastener 4 is just arranged at the periphery of the joint of the two folded pieces, so that the unfolded folded pieces are fixed, and meanwhile, the exposed structures of the rotating shaft 3, the rotating boss 22, the supporting boss 12 and the like are covered. The thread structure in the embodiment can be a trapezoid wide thread, so that the thread structure is more wear-resistant, and the service life of the folding assembly is prolonged. The external thread 17 in this embodiment is disposed on the first folding member 1 near the first folding surface 15, and its height and length are designed to ensure that the external thread 17 does not interfere with the outer wall of the second folding member 2 when the second folding member 2 is folded at the maximum angle. In addition, since the folding assembly in this embodiment is folded by adopting the fixed rotating shaft, the gap between the rotating shaft 3 and the rotating boss 22 is controlled within a smaller range, and the engagement of the protrusion 231 and the groove 161 reduces the relative offset between the two folding members, so that the system virtual position between the two folding members is reduced, the load on the threads after the fastening member 4 is locked is reduced, and the service life of the whole folding assembly is prolonged.
Further, in order to prevent the excessive threaded engagement of the fastener 4 with the folder, the fastener 4 is moved toward the first folder 1 so much that it cannot completely cover the periphery of the connection of the folder, and a positioning structure is further provided between the fastener 4 and the folder. As shown in fig. 4 and 14, specifically, a positioning boss 24 is provided on the periphery of the second folder 2, and the positioning boss 24 is provided near the semi-closed open end of the second folder 2; the inner wall of the fastener 4 is provided with a positioning step 42, the positioning step 42 is arranged close to one end of the fastener 4, which is not provided with the internal thread 41, and when the fastener 4 moves to the position that the end face of the positioning boss 24 is abutted against the step face of the positioning step 42, the positioning boss 24 can block the fastener 4 from further movement, so that excessive engagement between the fastener 4 and the first folding piece 1 is prevented. In order to buffer the hard contact between the positioning boss 24 and the positioning step 42, chamfer angles are arranged on the positioning step 42 and the positioning boss 24.
Because the internal diameter of fastener 4 is bigger than the external diameter of second folded piece 2, consequently have certain clearance between fastener 4 and the second folded piece 2, lead to fastener 4 can take place tiny rocking and skew when installing the use, in order to guarantee concentricity when fastener 4 and folded piece screw-thread fit, prevent to take place the wrong line, transposition phenomenon, be equipped with calibration step 43 on the inner wall of fastener 4, calibration step 43 locates between location step 42 and the internal thread 41, the internal diameter of fastener 4 reduces gradually after passing through calibration step 43, location step 42 in proper order. As shown in fig. 4, when the fastener 4 is moved to be screwed with the first folder 1, the positioning boss 24 is just at the alignment step 43, and since the inner diameter of the fastener 4 is reduced at the alignment step 43, concentricity of the fastener 4 with the folder is further aligned and adjusted in the subsequent screwed engagement, further securing of the folder is ensured. The alignment step 43 is optionally also provided with a chamfer.
Further, since the positioning boss 24 is protruding from the outer wall of the second folding member 2, in order to make the positioning boss 24 be located close to the first folding member 1 as much as possible, so as to reduce the overall size of the fastener 4 and improve the flexibility of the folding assembly, as shown in fig. 11, the third sub-plane 251 of the second folding surface 25 is located on the positioning boss 24, the fourth sub-plane 252 is located on the outer wall of the second folding member 2 between the positioning boss 24 and the rotating boss 22, when the folding assembly is at the maximum folding angle, the third sub-plane 251 on the positioning boss 24 is exactly parallel to and spaced from the first sub-plane 151 on the first folding member 1, and the fourth sub-plane 252 between the positioning boss 24 and the rotating boss 22 is exactly parallel to and spaced from the second sub-plane 152 of the first folding member 1.
The supporting boss 12, the rotating boss 22 and the rotating shaft 3 are all arranged at the end face of the corresponding folding piece, the accommodating groove 14, the first folding face 15 and the second folding face 25 are all arranged by taking the side wall structure of the folding piece as a support, and the phenomenon that the parts are exposed at the periphery of the folding piece is avoided in the folding and unfolding processes, so that the occupation of space is reduced; especially when the fastener 4 fastens two folding members, the above parts are covered by the fastener 4 and remain bare, improving the overall aesthetic appearance of the folding assembly.
As shown in fig. 4 and 14, in this embodiment, a washer groove 44 is formed on the inner wall of the end of the fastener 4 where the internal thread 41 is not provided, and a washer is installed in the washer groove 44, so that the washer can reduce collision abrasion with the folding member during the rotation process of the fastener 4, and protect the folding assembly; the gasket is optionally a silicone gasket, having a certain elasticity, cushioning the hard friction between the fastener 4 and the folded piece.
As shown in fig. 12, the outer wall of the fastener 4 is further provided with a plurality of anti-slip grooves 45, and the anti-slip grooves 45 are uniformly distributed on the outer wall of the fastener 4 in the circumferential direction, so that the outer wall of the fastener is in an uneven structural design, friction force of the fastener 4 when being screwed is increased, and the installation and disassembly speeds of the fastener 4 are improved.
The folding assembly of this embodiment simple structure, installation convenient to use has mainly included three spare parts of first folded piece 1, second folded piece 2 and fastener 4, and three spare parts cooperation is used, need not to dismantle, has avoided appearing the condition that spare part was lost, has reduced cost of manufacture and use.
The folding assembly provided by the embodiment can be used for folding the unmanned aerial vehicle arm, but is not limited to the unmanned aerial vehicle arm field, and can be used for other occasions and equipment needing folding, and the following specific description is given by taking the use of the folding assembly on the unmanned aerial vehicle arm as an example.
The horn of unmanned aerial vehicle divide into outer horn and interior horn, and the folding subassembly that this embodiment provided can realize the mutual folding of interior horn and outer horn, and then reduces unmanned aerial vehicle's occupation volume, conveniently carries and stores. Specifically, the inner horn is fixed with one of the first folding member 1 and the second folding member 2, and the outer horn is fixed with the other folding member, so that the inner horn and the outer horn are mutually folded through the folding assembly. The arm is fixedly connected with the free end of the folding piece, and the connection mode can be screw connection, riveting, threaded connection or clamping connection, and the like, and the riveting connection is preferred in the embodiment. When the folding piece is connected with the arm by riveting, the rivet can protrude out of the outer wall of the folding piece by a certain height, and the height is set to be larger than the inner diameter of the end face of the fastener 4; therefore, when the fastener 4 slides on the periphery of the folding piece, the protruding rivet can block the sliding of the fastener 4, so that the sliding range of the fastener 4 is limited, the fastener 4 cannot be separated from the folding piece, and the problems that the fastener 4 is easy to fall off and parts are lost are avoided.
The folding assembly provided by the embodiment is suitable for folding the small-pipe-diameter mechanical arm, and can achieve a folding angle of 130-140 degrees. Specifically, the inside diameter of the folding piece is optionally set to 25mm in the embodiment, so that the folding piece can be connected with a horn with the outside diameter of 25mm, and the problem that the horn with a small pipe diameter cannot be folded at a large angle is solved.
Because the folding pieces are hollow structural design, when the first folding piece 1 and the second folding piece 2 are in an unfolding state, the semi-closed openings of the first folding piece 1 and the second folding piece are communicated with each other, and the wire rod of the unmanned aerial vehicle can pass through the two folding pieces through the semi-closed openings to be connected with control equipment of the unmanned aerial vehicle, so that the wire rod is prevented from being exposed, and the appearance of the unmanned aerial vehicle is beautified while the wire rod is protected; when the folding component is in a folding state, the wire is arranged at the opening of the semi-closed opening, so that the arrangement of the wire on the closing plate does not influence the arrangement and use of the wire, and the threading of the wire does not influence the arrangement of the wire on the closing plate.
Further, a plurality of weight-reducing through grooves 26 are formed in the pipe wall of the folding piece, the whole weight of the folding piece can be reduced as much as possible while the folding function of the folding piece is finished, the load of the unmanned aerial vehicle is reduced, and the maneuverability of the unmanned aerial vehicle is improved. Fig. 10 schematically shows a plurality of weight-reducing channels 26 arranged on the second folding member 2 near the fully open end, the weight-reducing channels 26 being evenly distributed circumferentially on the outer wall of the second folding member 2.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (6)
1. The folding assembly is characterized by comprising a first folding piece (1) and a second folding piece (2) which are connected through a pin joint structure, wherein a rotating groove (13) is formed in the side wall of the first folding piece (1), and when the second folding piece (2) rotates to be abutted against the side wall of the rotating groove (13), the folding assembly is in a maximum folding state;
The folding assembly further comprises a fastener (4) sleeved on the periphery of the second folding piece (2); an inner thread (41) is arranged on the inner wall of the fastener (4); an external thread (17) is arranged on the outer wall of the first folding piece (1);
when the first folding piece (1) and the second folding piece (2) are in a fully unfolded state, the fastening piece (4) moves towards the first folding piece (1) and is arranged on the periphery of the joint of the first folding piece (1) and the second folding piece (2) through the threaded fit of the internal threads (41) and the external threads (17);
A positioning boss (24) is arranged at the periphery of the second folding piece (2); a positioning step (42) is arranged on the inner wall of the fastener (4), and the end face of the positioning boss (24) can be abutted against the step face of the positioning step (42);
The inner wall of the fastener (4) is also provided with a calibration step (43), the calibration step (43) is arranged between the positioning step (42) and the internal thread (41), and the inner diameter of the fastener (4) gradually decreases after passing through the calibration step (43) and the positioning step (42) in sequence; -said positioning boss (24) is located at said alignment step (43) when said fastener (4) is moved to be in threaded engagement with said first folding member (1);
the outer wall of the first folding piece (1) is further provided with a containing groove (14), the containing groove (14) is communicated with the rotating groove (13), and the containing groove (14) is used for containing part of the side wall of the second folding piece (2).
2. A folding assembly according to claim 1, characterized in that the receiving groove (14) is formed with a first folding surface (15) on the outer wall of the first folding member (1); the first folding surface (15) comprises a first sub-plane (151) and a second sub-plane (152) which are arranged at an included angle;
a second folding surface (25) is arranged on the outer wall of the second folding piece (2), and the second folding surface (25) comprises a third sub-plane (251) and a fourth sub-plane (252) which are arranged in an included angle manner;
when the second folding piece (2) rotates to be abutted against the side wall of the rotating groove (13), the first sub-plane (151) and the third sub-plane (251) are parallel to each other and are arranged at intervals, and the second sub-plane (152) and the fourth sub-plane (252) are parallel to each other and are arranged at intervals.
3. Folding assembly according to claim 1, characterized in that the end of the first folding member (1) is provided with two support bosses (12); the end part of the second folding piece (2) is provided with a rotating boss (22), and the rotating boss (22) is rotatably arranged between the two supporting bosses (12) through a rotating shaft (3);
the rotation boss (22) can be accommodated in the rotation groove (13) and is abutted against the side wall of the rotation groove (13).
4. The folding assembly according to claim 1, characterized in that the first folding member (1) is provided with a first positioning plate (16), the first positioning plate (16) being arranged protruding from an end face of the first folding member (1); a second positioning plate (23) is arranged on the second folding piece (2), and the second positioning plate (23) protrudes out of the end face of the second folding piece (2);
When the first folding piece (1) and the second folding piece (2) are in a completely unfolded state, the first positioning plate (16) is abutted with the second positioning plate (23).
5. The folding assembly according to claim 4, characterized in that one of the first positioning plate (16) and the second positioning plate (23) is provided with a groove (161), the other is provided with a protrusion (231), and when the first positioning plate (16) abuts against the second positioning plate (23), the protrusion (231) is engaged with the groove (161).
6. A drone comprising the folding assembly of any one of claims 1-5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106904267B (en) * | 2017-04-18 | 2023-08-11 | 昆山合朗航空科技有限公司 | Unmanned aerial vehicle horn mechanism and unmanned aerial vehicle |
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| CN110127031A (en) | 2019-08-16 |
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