Rotating signal transmission mechanism and drone gimbal

Abstract

The present invention discloses a rotating transmission signal mechanism and a drone gimbal, wherein the rotating transmission signal mechanism is provided with an annular conductive structure on one of a first wiring assembly and a second wiring assembly, and a brush abutting the annular conductive structure is provided on the other. When the first wiring assembly and the second wiring assembly rotate relative to each other, the brush and the annular conductive structure can realize that the signal between the first wiring assembly and the second wiring assembly remains connected, without having to pass a signal wire through the first wiring assembly and the second wiring assembly, so that there will be no line winding problem during the relative rotation of the first wiring assembly and the second wiring assembly, and the relative rotation angle of the first wiring assembly and the second wiring assembly will not be limited. When the rotating transmission signal mechanism is used on a drone gimbal, the influence of the line winding problem on the rotation angle of the camera can be avoided, and the camera can achieve 360° rotation.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles, and in particular to a rotational transmission signal mechanism and a unmanned aerial vehicle gimbal using the rotational transmission signal mechanism. Background Art

[0002] A gimbal is a device that stabilizes a photographing device and is widely used in the field of drones. Usually, the gimbal includes a first arm connected to the drone body, a second arm connected to the camera and rotatably connected to the first arm, and a motor installed on the first arm to drive the second arm to rotate. Most existing methods use a line between the drone body and the camera to achieve signal transmission between the drone body and the camera. However, with this design, the first arm and the second arm will get entangled during the relative rotation, and the first arm and the second arm cannot rotate 360 ​​degrees, which limits the shooting angle of the photographing device. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to disclose a rotation transmission signal mechanism to solve the problem that the first axis arm and the second axis arm of the existing gimbal will cause the line to be entangled during the relative rotation. The second purpose of the present invention is to disclose a drone gimbal, which adopts the above-mentioned rotation transmission signal mechanism.

[0004] One of the purposes of the present invention is achieved by the following technical solution:

[0005] A rotary signal transmission mechanism comprises a first wiring assembly having a first wiring terminal and a second wiring assembly having a second wiring terminal and rotatably connected to the first wiring assembly, wherein the first wiring assembly is provided with a plurality of first conductive structures which are arranged at intervals and are all electrically connected to the first wiring terminal, and the second wiring assembly is provided with a plurality of second conductive structures which are arranged at intervals and are all electrically connected to the second wiring terminal, wherein one of the first conductive structure and the second conductive structure is an annular conductive structure and the other is a brush, and each of the brushes abuts against one of the annular conductive structures.

[0006] As an improved method, the first wiring assembly includes the first wiring terminal, a first end cover and an axis core rotatably connected to the second wiring assembly, the first wiring terminal and the axis core are respectively fixed on two opposite sides of the first end cover, the plurality of annular conductive structures are arranged on the outer side surface of the axis core at axial intervals along the axis core, and the axis core is penetrated by a plurality of first wires for electrically connecting the first wiring terminal and the annular conductive structure.

[0007] As an improved manner, the outer side surface of the shaft core is provided with a plurality of first annular grooves, the plurality of first annular grooves are arranged at intervals along the axial direction of the shaft core, and one of the annular conductive structures is arranged in each of the first annular grooves; and / or,

[0008] The shaft core is provided with a plurality of first through holes, each of which includes a first hole portion and a second hole portion connected to the first hole portion, the first hole portion extending from the end surface of the shaft core facing the first end cover toward the axial direction of the shaft core, and the second hole portion extending from the end of the first hole portion away from the first end cover along the radial outward of the shaft core to the outer side surface of the shaft core, and each of the first through holes is provided with a first conductor; and / or,

[0009] The annular conductive structure is a conductive ring arranged on the outer side of the shaft core, or an annular wire arranged on the outer side of the shaft core, or an annular conductive coating arranged on the outer side of the shaft core.

[0010] As an improvement, the second wiring assembly includes the second wiring terminal, a second end cover and a first cylinder, the second wiring terminal and the first cylinder are respectively fixedly arranged on opposite sides of the second end cover, the first cylinder is sleeved on the outer periphery of the shaft core and is rotatably connected to the shaft core, the inner side wall of the first cylinder is axially spaced apart with a plurality of brush holes, each of the brush holes is provided with a brush, and the first cylinder is passed through a plurality of second wires for electrically connecting the second wiring terminal and the brush.

[0011] As an improved manner, the second wiring assembly further comprises a second cylinder sleeved on the outer periphery of the first cylinder and fixedly connected to the first cylinder and / or the second end cover, the outer side surface of the first cylinder is concavely provided with a strip groove extending along the axial direction of the first cylinder to the end surface of the first cylinder, each of the strip grooves is embedded with two second wires arranged side by side along the radial direction of the first cylinder and a first insulating member arranged between the two second wires, and a second insulating member is arranged between the second wire located radially outside the first cylinder and the second cylinder; and / or,

[0012] The brush is an elastic conductive member bent and compressed in the brush hole, or the brush is elastically compressed and installed in the brush hole.

[0013] As an improved manner, the rotation transmission signal mechanism further includes two first bearings respectively sleeved on both ends of the shaft core, and the first cylinder is rotatably connected to the shaft core through the two first bearings; and / or,

[0014] The rotation transmission signal mechanism further includes a first gasket, and the first gasket is arranged between the second cylinder and the first end cover.

[0015] As an improvement, the first wiring assembly includes the first wiring terminal and a top cover rotatably connected to the second wiring assembly, the first wiring terminal is arranged on a side of the top cover away from the second wiring assembly, and a plurality of second annular grooves are arranged at intervals on a side of the top cover facing the second wiring assembly, the plurality of second annular grooves are coaxially arranged, and each of the second annular grooves has an annular conductive structure embedded therein.

[0016] As an improvement, the second wiring assembly includes the second wiring terminal and a bottom cover rotatably connected to the top cover, the second wiring terminal is arranged on the side of the bottom cover away from the first wiring assembly, and a plurality of mounting holes are arranged at intervals from the inside to the outside on the side of the bottom cover facing the top cover, and one of the brushes is installed in each mounting hole.

[0017] As an improved manner, the rotary transmission signal mechanism further includes a connecting shaft and two second bearings, a bearing hole is respectively formed through the top cover and the bottom cover, a second bearing is installed in each of the bearing holes, and the connecting shaft is inserted into the two second bearings; and / or,

[0018] The rotation transmission signal mechanism further includes a second gasket disposed between the top cover and the bottom cover.

[0019] The second object of the present invention is achieved by adopting the following technical solution:

[0020] A drone gimbal includes a mounting base for mounting on a drone body, a first axis arm connected to the mounting base, a second axis arm for connecting a camera and rotatably connected to the first axis arm, a motor mounted on the first axis arm for driving the second axis arm to rotate, and the above-mentioned rotation transmission signal mechanism, wherein one of the first wiring assembly and the second wiring assembly is fixedly connected to the first axis arm, and the other is fixedly connected to the second axis arm.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention sets a rotating signal transmission mechanism by setting a ring-shaped conductive structure on one of the first wiring assembly and the second wiring assembly, and setting a brush abutting the ring-shaped conductive structure on the other. In this way, when the first wiring assembly and the second wiring assembly rotate relative to each other, the brush and the ring-shaped conductive structure can realize the signal connection between the first wiring assembly and the second wiring assembly, without having to pass a wire through the first wiring assembly and the second wiring assembly to realize the signal connection between the first wiring assembly and the second wiring assembly. Therefore, there will be no line winding problem during the relative rotation of the first wiring assembly and the second wiring assembly, and the relative rotation angle of the first wiring assembly and the second wiring assembly will not be limited. When the rotating signal transmission mechanism is used on the drone gimbal, the influence of the line winding problem on the rotation angle of the camera can be avoided, and the camera can achieve 360° rotation, which greatly expands the shooting angle of the camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the rotation transmission signal mechanism disclosed in the first embodiment of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of the rotation transmission signal mechanism disclosed in the first embodiment of the present invention;

[0025] Figure 3 It is an exploded schematic diagram of the rotation transmission signal mechanism disclosed in the first embodiment of the present invention;

[0026] Figure 4 It is a cross-sectional schematic diagram of the shaft core disclosed in the first embodiment of the present invention;

[0027] Figure 5 It is a cross-sectional schematic diagram of the first cylinder disclosed in the first embodiment of the present invention;

[0028] Figure 6 It is an exploded schematic diagram of the first cylinder disclosed in the first embodiment of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the rotation transmission signal mechanism disclosed in the second embodiment of the present invention;

[0030] Figure 8 An exploded schematic diagram of a first-angle view of a rotational signal transmission mechanism disclosed in Embodiment 2 of the present invention;

[0031] Fig. 9 An exploded schematic diagram of the second viewing angle of the rotational transmission signal mechanism disclosed in the second embodiment of the present invention;

[0032] Fig.10 This is a schematic diagram of the structure of the drone gimbal disclosed in Embodiment 3 of the present invention;

[0033] Fig.11 This is a schematic diagram of an explosion of the UAV gimbal disclosed in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0035] Embodiment 1:

[0036] See also Figure 1-6 Embodiment 1 of the present invention discloses a rotational signal transmission mechanism 40, comprising a first wiring assembly 41 having a first wiring terminal 411 and a second wiring assembly 42 having a second wiring terminal 421 and rotatably connected to the first wiring assembly 41, the first wiring assembly 41 is provided with a plurality of first conductive structures 51 which are arranged at intervals and are all electrically connected to the first wiring terminal 411, the second wiring assembly 42 is provided with a plurality of second conductive structures 52 which are arranged at intervals and are all electrically connected to the second wiring terminal 421, the first conductive structure 51 is an annular conductive structure, the second conductive structure 52 is a brush, and each brush abuts against a corresponding annular conductive structure.

[0037] With this design, since the signal is transmitted through the first conductive structure 51 and the second conductive structure 52, there is no need to pass a line through the first wiring assembly 41 and the second wiring assembly 42 to maintain the transmission of the signal between the first terminal 411 and the second terminal 421. In this way, there will be no problem of system line entanglement during the relative rotation of the first wiring assembly 41 and the second wiring assembly 42. The first wiring assembly 41 and the second wiring assembly 42 can transmit signals while rotating 360°. When the rotating signal transmission mechanism 40 is used on a drone gimbal, the influence of the line entanglement problem on the rotation angle of the camera can be avoided. The camera can achieve 360° rotation, greatly expanding the shooting angle of the camera.

[0038] Of course, the rotating signal transmission mechanism 40 is not limited to use on drone gimbals. Any two components that rotate relative to each other and need to transmit signals during the rotation process can use the rotating signal transmission mechanism 40 to avoid the problem of line entanglement.

[0039] Furthermore, the annular conductive structure and the brush can be swapped, that is, the annular conductive structure can be set on the second wiring component 42, and the brush can be set on the first wiring component 41, as long as the brush and the annular conductive member can always maintain contact during the relative rotation of the first wiring component 41 and the second wiring component 42.

[0040] As an improved method of this embodiment, the first wiring assembly 41 includes a first wiring terminal 411, a first end cover 412, and a shaft core 413 rotatably connected to the second wiring assembly 42. The first wiring terminal 411 and the shaft core 413 are respectively fixed on two opposite sides of the first end cover 412, and the annular conductive structure is arranged on the outer side of the shaft core 413 along the axial direction of the shaft core 413. A plurality of first wires 414 for electrically connecting the first wiring terminal 411 and the annular conductive structure are passed through the shaft core 413. The shaft core 413 is roughly cylindrical, and one end of the shaft core 413 is fastened to the first end cover 412 by bolts.

[0041] As an improvement of this embodiment, the annular conductive structure may be a conductive ring arranged on the outer side of the shaft core 413 , or an annular wire arranged on the outer side of the shaft core 413 , or an annular conductive coating arranged on the outer side of the shaft core 413 .

[0042] As an improvement of this embodiment, a plurality of first annular grooves 4131 are provided on the outer side of the shaft core 413 . The plurality of first annular grooves 4131 are spaced apart along the axial direction of the shaft core 413 , and an annular conductive structure is provided in each first annular groove 4131 .

[0043] As an improvement on the present embodiment, a plurality of first through holes 4132 are provided on the shaft core 413, each of the first through holes 4132 comprises a first hole portion 4133 and a second hole portion 4134 connected to the first hole portion 4133, the first hole portion 4133 extends from the end surface of the shaft core 413 facing the first end cover 412 toward the axial direction of the shaft core 413, the second hole portion 4134 extends from the end of the first hole portion 4133 away from the first end cover 412 radially outward along the shaft core 413 to the outer side surface of the shaft core 413, and each of the first through holes 4132 is passed through a first conductor 414 as mentioned above.

[0044] As an improvement of the present embodiment, the second wiring assembly 42 includes a second wiring terminal 421, a second end cover 422 and a first cylinder 423. The second wiring terminal 421 and the first cylinder 423 are respectively fixedly arranged on opposite sides of the second end cover 422. The first cylinder 423 is sleeved on the outer periphery of the shaft core 413 and is rotatably connected to the shaft core 413. The inner side wall of the first cylinder 423 is axially spaced apart with a plurality of brush holes 4231, and each brush hole 4231 is provided with the above-mentioned brush. The first cylinder 423 is provided with a plurality of second wires 424 for electrically connecting the second wiring terminal 421 and the brush.

[0045] As an improvement of the present embodiment, the brush is an elastic conductive member that is bent and compressed in the brush hole 4231. Specifically, the brush is an elastic conductive member with elasticity, and its length is greater than the distance from the second wire 424 to the annular conductive structure, so that when the brush is installed in the brush hole 4231, the brush is in a bent and compressed state. The purpose of this setting is to extend the service life of the rotating transmission signal mechanism 40. Every time the brush is worn a little during use, the brush will extend a little toward the annular conductive structure due to its own elastic force, thereby ensuring the contact between the brush and the annular conductive structure for a long time, and there will be no poor contact due to the wear of the brush, thereby extending the service life of the rotating transmission signal mechanism 40.

[0046] Of course, the brush is not limited to the above-mentioned setting method. For example, the brush can be elastically compressed and installed in the brush hole 4231. Specifically, an elastic member, such as a spring, is installed in the brush hole 4231, and then the brush is installed in the brush hole 4231. The elastic member is in a compressed state. When the brush wears during use, due to the squeezing effect of the elastic member, the brush will always maintain contact with the annular conductive structure to avoid poor contact and extend the service life of the rotating transmission signal mechanism 40.

[0047] As an improved method of this embodiment, the rotation transmission signal mechanism 40 further includes two first bearings 43 respectively sleeved on both ends of the shaft core 413, and the first cylinder 423 is rotatably connected to the shaft core 413 through the two first bearings 43. Specifically, the inner rings of the two first bearings 43 are respectively interference fit with the two ends of the shaft core 413, and the outer rings of the two first bearings 43 are respectively interference fit with the inner walls of the two ends of the first cylinder 423, so as to realize the rotation connection between the shaft core 413 and the first cylinder 423.

[0048] As an improved method of the present embodiment, the second wiring assembly 42 further includes a second cylinder 425 sleeved on the outer periphery of the first cylinder 423 and fixedly connected to the first cylinder 423 and / or the second end cap 422. The outer side surface of the first cylinder 423 is concavely provided with a strip groove 4232 extending axially from the first cylinder 423 to the end surface of the first cylinder 423. Two second wires 424 arranged side by side along the radial direction of the first cylinder 423 and a first insulating member 426 arranged between the two second wires 424 are embedded in each strip groove 4232. A second insulating member 427 is arranged between the second wire 424 located radially outside the first cylinder 423 and the second cylinder 425. With this design, the installation of the second wire 424 is facilitated. During installation, the second wire 424 / the first insulating member 426 / the second wire 424 / the second insulating member 427 only need to be arranged in the strip groove 4232 in a sequentially stacked relationship, and then the second cylinder 425 is sleeved on the outer periphery of the first cylinder 423. It is understandable that the first cylinder 423 is not limited to installing the second wire 424 by setting the strip groove 4232. For example, it is also possible to pass the second wire 424 by opening two through holes spaced apart along the axial direction of the first cylinder 423 from the end surface of the first cylinder 423 toward the second end cover 422.

[0049] As an improved way of this embodiment, the rotation transmission signal mechanism 40 further includes a first gasket 44, which is disposed between the second cylinder 425 and the first end cover 412. Specifically, the second cylinder 425 is provided with a second annular groove 4251 on the surface facing the first end cover 412, and the first gasket 44 is embedded in the first annular groove 4241. The first gasket 44 is used to prevent moisture and dust from entering the interior of the rotation transmission signal mechanism from the gap between the second cylinder 425 and the first end cover 412. It can be understood that the first gasket 44 is not limited to being disposed between the second cylinder 425 and the first end cover 412. For example, the first gasket 44 can also be disposed between the first cylinder 423 and the first end cover 412.

[0050] Embodiment 2:

[0051] See also Figure 7-9 The second embodiment of the present invention provides a rotation transmission signal mechanism 70. The rotation transmission signal mechanism 70 provided in the second embodiment of the present invention is similar to the rotation transmission signal mechanism 40 provided in the first embodiment of the present invention in that:

[0052] The rotary signal transmission mechanism 70 of this embodiment also includes a first wiring component 71 having a first wiring terminal 711 and a second wiring component 72 having a second wiring terminal 721 and rotatably connected to the first wiring component 71. The first wiring component 71 is also provided with a plurality of first conductive structures 81 that are spaced apart and electrically connected to the first wiring terminal 711. The second wiring component 72 is also provided with a plurality of second conductive structures 82 that are spaced apart and electrically connected to the second wiring terminal 721. The first conductive structure 81 is an annular conductive structure, and the second conductive structure 82 is a brush that abuts the annular conductive structure.

[0053] Similarly, with this design, since there is no need to pass a line through the first wiring assembly 71 and the second wiring assembly 72 to maintain the transmission of signals between the first wiring terminal 711 and the second wiring terminal 721, there will be no problem of system line entanglement during the relative rotation of the first wiring assembly 71 and the second wiring assembly 72. The first wiring assembly 71 and the second wiring assembly 72 can rotate 360°, that is, the first axis arm 10 and the second axis arm 20 can rotate 360°. When the rotating signal transmission mechanism 40 is used on a drone gimbal, the influence of the line entanglement problem on the rotation angle of the camera can be avoided, and the camera can rotate 360°, greatly expanding the shooting angle of the camera.

[0054] The rotation transmission signal mechanism 70 provided in the second embodiment of the present invention is different from the rotation transmission signal mechanism 40 provided in the first embodiment in that:

[0055] As an improvement of the present embodiment, the first wiring assembly 71 includes a first wiring terminal 711 and a top cover 712 rotatably connected to the second wiring assembly 72, the first wiring terminal 711 is arranged on a side of the top cover 712 away from the second wiring assembly 72, and a plurality of second annular grooves 7121 are arranged at intervals on a side of the top cover 712 facing the second wiring assembly 72, the plurality of second annular grooves 7121 are coaxially arranged, and an annular conductive structure is embedded in each second annular groove 7121.

[0056] As an improved way of this embodiment, the second wiring assembly 72 includes a second wiring terminal 721 and a bottom cover 722 rotatably connected to the top cover 712, the second wiring terminal 721 is arranged on a side of the bottom cover 722 away from the first wiring assembly 71, and a plurality of mounting holes 7221 are arranged at intervals from the inside to the outside on the side of the bottom cover 722 facing the top cover 712, and a brush is installed in each mounting hole 7221. Preferably, the brush is an elastic conductive member bent and compressed in the mounting hole 7221.

[0057] As an improved way of the present embodiment, the rotation transmission signal mechanism 70 further includes a connecting shaft 73 and two second bearings 74. A bearing hole 7122 is respectively formed through the top cover 712 and the bottom cover 722. A second bearing 74 is installed in each bearing hole 7122, and the connecting shaft 73 is inserted into the two second bearings 74. Specifically, the outer rings of the two second bearings 74 are respectively interference fit with the bearing holes 7122 formed on the top cover 712 and the bottom cover 722, the connecting shaft 73 is inserted into the two second bearings 74, and both ends are respectively interference fit with the inner rings of the two second bearings 74, so as to realize the rotation fit of the first wiring assembly 71 and the second wiring assembly 72.

[0058] As an improved way of this embodiment, the rotation transmission signal mechanism 70 further includes a second gasket 75, which is disposed between the top cover 712 and the bottom cover 722. Specifically, the surface of the bottom cover 722 facing the top cover 712 is provided with a third annular groove 7222, and the second gasket 75 is embedded in the third annular groove 7222. The second gasket 75 is used to prevent moisture and dust from entering the interior of the rotation transmission signal mechanism from the gap between the top cover 712 and the bottom cover 722. It can be understood that the third annular groove 7222 is not limited to being disposed on the bottom cover 722, and can also be disposed on the top cover 712.

[0059] Embodiment three:

[0060] See also Figure 7-11 , Embodiment 3 of the present invention discloses a drone gimbal 100, including a mounting seat 101, a first shaft arm 102, a second shaft arm 103, a motor 104, and a rotation transmission signal mechanism as described in Embodiment 1 or Embodiment 2. In this embodiment, the rotation transmission signal mechanism 70 disclosed in Embodiment 2 is used as an example for description. The mounting seat 101 is used for mounting and fixing the drone fuselage, the first shaft arm 102 is connected to the mounting seat 101, the second shaft arm 103 is rotationally connected to the first shaft arm 102, the camera is mounted on the second shaft arm 103, the motor 104 is mounted on the first shaft arm 102 to drive the second shaft arm 103 to rotate relative to the first shaft arm 102, and the rotation transmission signal mechanism 70 is installed between the first shaft arm 102 and the second shaft arm 103 for communication between the drone fuselage and the camera.

[0061] Specifically, the first wiring assembly 71 of the rotation transmission signal mechanism 70 is fixedly mounted on the first shaft arm 102, the second wiring assembly 72 of the rotation transmission signal mechanism 70 is fixedly mounted on the second shaft arm 103, the output shaft 1041 of the motor 104 passes through the bearing hole 7122 and is fixedly connected to the second shaft arm 103, the wire from the drone fuselage is connected to the first wiring terminal 711, and the wire from the camera is connected to the second wiring terminal 721. When in use, the motor 104 drives the second shaft arm 103 to rotate along the EE direction relative to the first shaft arm 102, thereby driving the camera to rotate along the EE direction. Since the first wiring assembly 71 and the second wiring assembly 72 realize signal transmission through the first conductive structure 81 and the second conductive structure 82, there is no need to set a line in the first wiring assembly 71 and the second wiring assembly 72 to maintain the signal transmission between the first wiring terminal 711 and the second wiring terminal 721. In this way, when the motor 104 drives the second shaft arm 103 to rotate relative to the first shaft arm 102, there will be no problem of system line winding between the first wiring assembly 71 and the second wiring assembly 72. The first wiring assembly 71 and the second wiring assembly 72 can be rotated 360 degrees, that is, the first shaft arm 102 and the second shaft arm 103 can be rotated 360 degrees, which greatly expands the shooting angle of the camera. It can be understood that the installation positions of the first wiring assembly 71 and the second wiring assembly 72 can be interchanged, that is, the first wiring assembly 71 is fixedly installed on the second shaft arm 103, and the second wiring assembly 72 is fixedly installed on the first shaft arm 102.

[0062] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A rotational signal transmission mechanism, characterized in that: The invention comprises a first wiring assembly having a first wiring terminal and a second wiring assembly having a second wiring terminal and being rotatably connected to the first wiring assembly, wherein the first wiring assembly is provided with a plurality of first conductive structures which are arranged at intervals and are all electrically connected to the first wiring terminal, and the second wiring assembly is provided with a plurality of second conductive structures which are arranged at intervals and are all electrically connected to the second wiring terminal, wherein the first conductive structure is an annular conductive structure, and the second conductive structure is an electric brush, and each of the brushes abuts against one of the annular conductive structures; the second wiring assembly comprises the second wiring terminal, a second end cover and a first cylinder, and the second wiring assembly also comprises a sleeve A second cylinder body is arranged at the outer periphery of the first cylinder body and fixedly connected to the first cylinder body and / or the second end cover, the outer side surface of the first cylinder body is concavely provided with a strip groove extending along the axial direction of the first cylinder body to the end surface of the first cylinder body, each of the strip grooves is embedded with two second wires arranged side by side along the radial direction of the first cylinder body for electrically connecting the second terminal and the brush and a first insulating member arranged between the two second wires, and a second insulating member is arranged between the second wire located on the radial outer side of the first cylinder body and the second cylinder body; a plurality of brush holes are axially spaced apart on the inner side wall of the first cylinder body, and the brushes are elastically compressed and installed in the brush holes; The first wiring assembly includes the first wiring terminal, a first end cover and an axis core rotatably connected to the second wiring assembly, the first wiring terminal and the axis core are respectively fixed on two opposite sides of the first end cover, the multiple annular conductive structures are arranged on the outer side of the axis core along the axial direction of the axis core, and multiple first wires for electrically connecting the first wiring terminal and the annular conductive structure are passed through the axis core, and one end of the axis core is fastened to the first end cover by bolts.

2. The rotation transmission signal mechanism according to claim 1, characterized in that: The outer side surface of the shaft core is provided with a plurality of first annular grooves, and the plurality of first annular grooves are arranged at intervals along the axial direction of the shaft core, and one of the annular conductive structures is arranged in each of the first annular grooves.

3. The rotation transmission signal mechanism according to claim 2, characterized in that: A plurality of first through holes are provided on the shaft core, each of the first through holes includes a first hole portion and a second hole portion connected to the first hole portion, the first hole portion extends from the end surface of the shaft core facing the first end cover toward the axial direction of the shaft core, and the second hole portion extends from the end of the first hole portion away from the first end cover along the radial outward of the shaft core to the outer side surface of the shaft core, and a first conductor is passed through each of the first through holes; and the annular conductive structure is a conductive ring arranged on the outer side surface of the shaft core.

4. The rotation transmission signal mechanism according to any one of claims 1 to 3, characterized in that: The second terminal and the first cylinder are respectively fixedly arranged on opposite sides of the second end cover, the first cylinder is sleeved on the outer periphery of the shaft core and is rotatably connected to the shaft core, a plurality of brush holes are axially spaced apart on the inner side wall of the first cylinder, one brush is arranged in each of the brush holes, and a plurality of second wires for electrically connecting the second terminal and the brush are passed through the first cylinder.

5. The rotation transmission signal mechanism according to claim 3, characterized in that: The conductive ring is a ring-shaped conductive wire or a ring-shaped conductive coating.

6. The rotational signal transmission mechanism according to any one of claims 1 to 3, characterized in that: The brush is an elastic conductive member.

7. The rotational signal transmission mechanism according to any one of claims 1 to 3, characterized in that: The rotation transmission signal mechanism further includes two first bearings respectively sleeved on two ends of the shaft core, and the first cylinder is rotationally connected to the shaft core via the two first bearings.

8. The rotational signal transmission mechanism according to any one of claims 1 to 3, characterized in that: The rotation transmission signal mechanism further includes a first gasket, and the first gasket is arranged between the second cylinder and the first end cover.

9. A drone gimbal, characterized in that: It includes a mounting base for mounting on a drone fuselage, a first arm connected to the mounting base, a second arm for connecting a camera and rotatably connected to the first arm, a motor installed on the first arm to drive the second arm to rotate, and a rotating signal transmission mechanism as described in any one of claims 1 to 8, wherein one of the first wiring assembly and the second wiring assembly is fixedly connected to the first arm, and the other is fixedly connected to the second arm.

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