Coupling structure

Abstract

The utility model discloses a coupling structure, and relates to the field of cabin door lifting devices of unmanned aerial vehicles. The plum blossom elastic bodies are located in the adjacent claw discs, through grooves are formed in the outer walls of the claw discs, auxiliary mechanisms used for increasing the friction force of the inner walls of the claw discs are arranged in the claw discs, and each auxiliary mechanism comprises a bearing cylinder, a rubber cylinder, an anti-skid protrusion and a mounting column. The rubber cylinder is located in the bearing cylinder, the anti-skid protrusions are fixedly connected to the inner wall of the rubber cylinder, the mounting column is arranged on the claw disc in a sliding mode, a positioning mechanism used for locking the mounting position of the mounting column is arranged on the side portion of the claw disc, and a shielding mechanism is arranged on the positioning mechanism. The bearing barrel drives the rubber barrel and the anti-skid protrusions to be installed in the claw disc, the convex faces of the anti-skid protrusions are attached to the outer wall of the transmission shaft or the rotating shaft, and therefore the friction force between the claw disc and the transmission shaft or the rotating shaft can be increased, and anti-skid protection can be conveniently conducted on the claw disc.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle cabin door lifting devices, in particular to a coupling structure. Background Art

[0002] The drone door is usually a key component in the design of a drone. The drone door is installed on the drone fuselage and is used to close or open the interior space of the drone. The drone door mainly protects the internal equipment and payload or battery components of the drone, and opens when needed to allow the drone to take off or receive the drone to land. When opening and closing the drone door, a lifting device is usually used. The lifting device can drive the drone door to rise and fall for opening and closing operations.

[0003] The prior art UAV door lifting device usually includes a driving member, a transmission shaft and a coupling, etc. The output end of the driving member is connected to a rotating shaft, and the rotating shaft is connected to the transmission shaft through a coupling. The coupling is usually a plum blossom coupling. The plum blossom coupling can usually rely on its internal plum blossom elastic element or special structure to compensate for the displacement of the shaft to ensure the smooth operation of the transmission system.

[0004] The plum blossom coupling usually includes a claw plate, a plum blossom elastic part and a fastening bolt. There is usually a notch on the claw plate, and the fastening bolt is connected to the notch on the claw plate so that the transmission shaft and the rotating shaft are interlaced with the inside of the claw plate. Then the fastening bolt is rotated to reduce the size of the notch on the claw plate to lock the transmission shaft or the rotating shaft and the claw plate. However, after the claw plate is used for a long time, there will be a small friction between the inner wall of the claw plate and the outer wall of the transmission shaft or the rotating shaft, which will cause the claw plate to slip, affecting the stability of the connection between the transmission shaft and the rotating shaft. As a result, the coupling is not convenient for anti-slip assistance on the inner wall of the claw plate, and there are certain limitations. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a coupling structure, which solves the problem that the claw plate and the transmission shaft or the rotating shaft slip due to low friction between the inner wall of the claw plate and the transmission shaft or the rotating shaft.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a coupling structure, including:

[0007] A claw plate and a plum blossom elastic body, wherein the plum blossom elastic body is located inside the adjacent claw plate;

[0008] It is characterized in that a through groove is provided on the outer wall of the claw plate, and an auxiliary mechanism for increasing the friction force of the inner wall of the claw plate is provided inside the claw plate, and the auxiliary mechanism includes:

[0009] A bearing tube, the bearing tube is slidably inserted and connected to the inside of the claw plate;

[0010] A rubber cylinder and anti-slip protrusions, the rubber cylinder is located inside the bearing cylinder, and the anti-slip protrusions are fixedly connected to the inner wall of the rubber cylinder;

[0011] Mounting posts, the mounting posts are slidably arranged on the claw disc, the mounting posts are used for sliding guidance of the installation of the bearing cylinder, a positioning mechanism for locking the installation position of the mounting posts is arranged on the side of the claw disc, and a shielding mechanism is arranged on the positioning mechanism.

[0012] Preferably, the outer wall of the rubber cylinder is fixedly connected to the inner wall of the bearing cylinder, the side of the mounting post is fixedly connected to the outer wall of the bearing cylinder, mounting grooves are symmetrically formed in the inner wall of the claw disc, and the mounting post is slidably inserted into the inner cavity of the mounting groove.

[0013] Preferably, the positioning mechanism includes:

[0014] An arc-shaped plate, a positioning rod is fixedly connected to the inner wall of the arc-shaped plate;

[0015] A fixing plate, the fixing plate is slidably arranged on the arc-shaped plate.

[0016] Preferably, a through hole is formed in the outer wall of the claw disc, a limiting hole is formed in the side of the mounting post, and the positioning rod is slidably inserted into the inner cavities of the through hole and the limiting hole.

[0017] Preferably, the side of the fixing plate is fixedly connected to the claw disc, sliding grooves are symmetrically formed in the outer wall of the arc-shaped plate, the fixing plate is slidably inserted into the inner cavity of the sliding groove, fixing frames are symmetrically fixedly connected to the outer wall of the arc-shaped plate, a locking bolt is threadedly inserted through the side of the fixing frame, and one end of the locking bolt is threadedly inserted through the fixing plate.

[0018] Preferably, the shielding mechanism includes:

[0019] A threaded cylinder, the side of the threaded cylinder is fixedly connected to the fixing frame;

[0020] A shielding cylinder, the threaded cylinder is threadedly inserted into the inner cavity of the shielding cylinder, a stop block is fixedly connected to the side of the inner wall of the shielding cylinder, a positioning cylinder is fixedly connected to the top end of the shielding cylinder, a connecting cylinder is fixedly connected to the top end of the positioning cylinder, and a top ring is fixedly connected to the top end of the connecting cylinder.

[0021] Preferably, an installation rod is slidably inserted into the inner cavity of the top ring. The outer wall of the installation rod is slidably inserted into the top end of the threaded cylinder. A connection frame is fixedly connected to the side of the threaded cylinder. The installation rod is slidably inserted into the inner cavity of the connection frame. A moving block is fixedly connected to the outer wall of the installation rod. A positioning frame is fixedly inserted through the outer wall of the connection cylinder. An elastic cord is arranged inside the positioning frame. One end of the elastic cord is fixedly connected to the positioning frame, and the other end of the elastic cord is fixedly connected to the threaded cylinder.

[0022] Preferably, a T-shaped hole is formed in the outer wall of the claw disc, and a threaded hole is formed in the outer wall of the claw disc. A fastening bolt is threadedly inserted into the inner cavity of the T-shaped hole, and the outer wall of the fastening bolt is threadedly inserted into the inner cavity of the threaded hole. A fitting cylinder is fixedly connected to the inner wall of the T-shaped hole.

[0023] The utility model discloses a coupling structure, and the beneficial effects thereof are as follows:

[0024] The bearing cylinder drives the rubber cylinder and the anti-slip protrusions to be installed inside the claw disc. The positioning mechanism installs and disassembles the bearing cylinder. The convex surface of the anti-slip protrusions is attached to the outer wall of the transmission shaft or the rotating shaft, which is beneficial to increasing the friction between the claw disc and the transmission shaft or the rotating shaft, so as to protect the claw disc from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the front sectional structure at the installation column of the present invention;

[0028] Figure 3 It is a schematic diagram of the side sectional structure at the shielding cylinder of the present invention;

[0029] Figure 4 It is a schematic diagram of the side sectional structure at the connection cylinder of the present invention.

[0030] In the figure: 1. Claw disc; 2. Plum blossom elastomer; 3. Auxiliary mechanism; 31. Bearing cylinder; 32. Rubber cylinder; 33. Anti-slip protrusion; 34. Mounting post; 4. Positioning mechanism; 41. Arc plate; 42. Positioning rod; 43. Fixed plate; 44. Fixed frame; 45. Locking bolt; 5. Fitting cylinder; 6. Shielding mechanism; 61. Threaded cylinder; 62. Shielding cylinder; 63. Block; 64. Positioning cylinder; 65. Connecting cylinder; 66. Top ring; 67. Mounting rod; 68. Moving block; 69. Positioning frame; 610. Elastic cord; 611. Connecting frame; 7. Fastening bolt. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model are clearly and completely described below. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] By providing a coupling structure in the embodiments of the present application, the problem that the friction between the inner wall of the claw disc 1 and the transmission shaft or the rotating shaft is small, resulting in slipping between the claw disc 1 and the transmission shaft or the rotating shaft, is solved. By inserting the bearing cylinder 31 into the inside of the claw disc 1, the rubber cylinder 32 and the anti-slip protrusion 33 increase the friction between the inner wall of the claw disc 1 and the transmission shaft or the rotating shaft, thereby providing anti-slip protection for the claw disc 1.

[0033] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific implementation modes.

[0034] The embodiments of the present utility model disclose a coupling structure.

[0035] According to Attachment Figure 1 -4 shows that it includes a claw disc 1 and a plum blossom elastomer 2. A T-shaped hole is provided on the outer wall of the claw disc 1, and a threaded hole is provided on the outer wall of the claw disc 1. A fastening bolt 7 is threadedly inserted into the inner cavity of the T-shaped hole. When it is screwed, the inner cavity size of the through groove is reduced, so that the claw disc 1 deforms at the through groove to clamp and fix the transmission shaft or the rotating shaft. The outer wall of the fastening bolt 7 is threadedly inserted into the inner cavity of the threaded hole. A fitting cylinder 5 is fixedly connected to the inner wall of the T-shaped hole. The fitting cylinder 5 is made of rubber. The fitting cylinder 5 is beneficial to increasing the friction at the end of the fastening bolt 7, and thus is beneficial to providing anti-slip protection for the fastening bolt 7. The plum blossom elastomer 2 is located inside the adjacent claw disc 1.

[0036] Further, a through groove is formed in the outer wall of the claw disc 1, and an auxiliary mechanism 3 for increasing the friction force on the inner wall of the claw disc 1 is arranged inside the claw disc 1. The auxiliary mechanism 3 includes a bearing cylinder 31, a rubber cylinder 32, anti-slip protrusions 33 and a mounting post 34. The bearing cylinder 31 can be an elastic member, so that the edge position of the bearing cylinder 31 can be deformed. The bearing cylinder 31 is arranged in an open loop. The rubber cylinder 32 is beneficial to support the anti-slip protrusions 33. The anti-slip protrusions 33 are made of rubber. The rubber cylinder 32 and the anti-slip protrusions 33 are beneficial to increase the friction force between the inner wall of the claw disc 1 and the outer wall of the transmission shaft or the rotating shaft, so as to protect the claw disc 1 from slipping. The mounting post 34 is beneficial to vertically guide the installation of the bearing cylinder 31, and is convenient for preventing the bearing cylinder 31 from rotating randomly. The bearing cylinder 31 is slidably inserted into the inside of the claw disc 1. The rubber cylinder 32 is located inside the bearing cylinder 31. The anti-slip protrusions 33 are fixedly connected to the inner wall of the rubber cylinder 32. The mounting post 34 is slidably arranged on the claw disc 1. The mounting post 34 is used for slidingly guiding the installation of the bearing cylinder 31. A positioning mechanism 4 for locking the installation position of the mounting post 34 is arranged on the side of the claw disc 1. A shielding mechanism 6 is arranged on the positioning mechanism 4. The outer wall of the rubber cylinder 32 is fixedly connected to the inner wall of the bearing cylinder 31. The side of the mounting post 34 is fixedly connected to the outer wall of the bearing cylinder 31. Mounting grooves are symmetrically formed in the inner wall of the claw disc 1. The mounting post 34 is slidably inserted into the inner cavity of the mounting groove.

[0037] Specifically, the positioning mechanism 4 includes an arc plate 41 and a fixing plate 43. The arc plate 41 is beneficial to drive the positioning rod 42 to move, and is convenient for pulling the positioning rod 42. A positioning rod 42 is fixedly connected to the inner wall of the arc plate 41, which is beneficial to limit the position of the mounting post 34, and further beneficial to install and disassemble the bearing cylinder 31, and is convenient for replacing the rubber cylinder 32 and the anti-slip protrusions 33. The fixing plate 43 is beneficial to be connected with the arc plate 41, and further beneficial to slidably install the arc plate 41. The fixing plate 43 is slidably arranged on the arc plate 41. A through hole is formed in the outer wall of the claw disc 1. A limiting hole is formed in the side of the mounting post 34. The positioning rod 42 is slidably inserted into the inner cavities of the through hole and the limiting hole. The side of the fixing plate 43 is fixedly connected to the claw disc 1. Sliding grooves are symmetrically formed in the outer wall of the arc plate 41. The fixing plate 43 is slidably inserted into the inner cavity of the sliding groove. Fixing frames 44 are symmetrically fixedly connected to the outer wall of the arc plate 41, which are beneficial to be connected with the fixing plate 43 and at the same time beneficial to support the locking bolts 45. A locking bolt 45 is threadedly inserted into the side of the fixing frame 44, which is beneficial to limit the relative position of the fixing frame 44 and the fixing plate 43 and prevent the positioning rod 42 from sliding randomly. One end of the locking bolt 45 is threadedly inserted into the fixing plate 43.

[0038] Specifically, the shielding mechanism 6 includes a threaded cylinder 61 and a shielding cylinder 62, which is beneficial to support the installation of the shielding cylinder 62. The shielding cylinder 62 is beneficial to drive the block 63 to move, and at the same time is beneficial to cooperate with the threaded cylinder 61 to shield and protect the locking bolt 45. The side of the threaded cylinder 61 is fixedly connected to the fixed frame 44. The threaded cylinder 61 and the inner cavity of the shielding cylinder 62 are threadedly inserted and connected. The side of the inner wall of the shielding cylinder 62 is fixedly connected with a block 63, which is beneficial to limit the end of the locking bolt 45 and prevent the self-rotation of the locking bolt 45. The top of the shielding cylinder 62 is fixedly connected with a positioning cylinder 64, which is beneficial to support the connecting cylinder 65. The top of the positioning cylinder 64 is fixedly connected with a connecting cylinder 65, which is beneficial to support the top ring 66. The top of the connecting cylinder 65 is fixedly connected with a top ring 66, which is beneficial to vertically guide and support the return of the mounting rod 67. The inner cavity of the top ring 66 is slidably inserted with a mounting rod 67, which is beneficial to be connected with the connecting frame 611, and further beneficial to limit the relative positions of the shielding cylinder 62 and the connecting frame 611 to prevent the random rotation of the shielding cylinder 62. The outer wall of the mounting rod 67 is slidably inserted through the top of the threaded cylinder 61. The side of the threaded cylinder 61 is fixedly connected with a connecting frame 611, which is beneficial to be connected with the mounting rod 67. The mounting rod 67 is slidably inserted through the inner cavity of the connecting frame 611. The outer wall of the mounting rod 67 is fixedly connected with a moving block 68, which is beneficial to drive the mounting rod 67 to move. The outer wall of the connecting cylinder 65 is fixedly inserted with a positioning frame 69, and the positioning frame 69 is U-shaped. The positioning frame 69 is beneficial to limit the movement position of the moving block 68 and at the same time make the elastic cord 610 have a certain tensile force in the initial position. The elastic cord 610 is arranged inside the positioning frame 69, which is beneficial to generate a tensile force on the moving block 68 and facilitate the mounting rod 67 to return to its original position after movement. One end of the elastic cord 610 is fixedly connected to the positioning frame 69, and the other end of the elastic cord 610 is fixedly connected to the threaded cylinder 61.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coupling structure, comprising a claw plate (1) and a plum blossom elastic body (2), wherein the plum blossom elastic body (2) is located inside an adjacent claw plate (1); It is characterized in that The outer wall of the claw plate (1) is provided with a through groove, and the interior of the claw plate (1) is provided with an auxiliary mechanism (3) for increasing the friction force of the inner wall of the claw plate (1), and the auxiliary mechanism (3) comprises: A bearing tube (31), the bearing tube (31) is slidably inserted and connected to the inside of the claw plate (1); A rubber tube (32) and an anti-skid protrusion (33), wherein the rubber tube (32) is located inside the bearing tube (31), and the anti-skid protrusion (33) is fixedly connected to the inner wall of the rubber tube (32); The mounting column (34) is slidably arranged on the claw plate (1), and the mounting column (34) is used for slidingly guiding the installation of the supporting tube (31). A positioning mechanism (4) for locking the installation position of the mounting column (34) is arranged on the side of the claw plate (1), and a shielding mechanism (6) is arranged on the positioning mechanism (4).

2. A coupling structure according to claim 1, characterized in that: The outer wall of the rubber tube (32) is fixedly connected to the inner wall of the bearing tube (31), the side of the mounting column (34) is fixedly connected to the outer wall of the bearing tube (31), the inner wall of the claw plate (1) is symmetrically provided with mounting grooves, and the mounting column (34) is slidably connected to the inner cavity of the mounting groove.

3. A coupling structure according to claim 1, characterized in that: The positioning mechanism (4) comprises: An arc-shaped plate (41), wherein the inner wall of the arc-shaped plate (41) is fixedly connected with a positioning rod (42); A fixed plate (43), wherein the fixed plate (43) is slidably disposed on the arc-shaped plate (41).

4. A coupling structure according to claim 3, characterized in that: The outer wall of the claw plate (1) is provided with a through hole, the side of the mounting column (34) is provided with a limiting hole, and the positioning rod (42) is slidably connected with the inner cavities of the through hole and the limiting hole.

5. A coupling structure according to claim 3, characterized in that: The side of the fixing plate (43) is fixedly connected to the claw plate (1); the outer wall of the arc plate (41) is symmetrically provided with sliding grooves; the fixing plate (43) is slidably inserted and connected to the inner cavity of the sliding groove; the outer wall of the arc plate (41) is symmetrically fixedly connected to a fixing frame (44); the side of the fixing frame (44) is threadedly inserted and connected to a locking bolt (45); one end of the locking bolt (45) is threadedly inserted and connected to the fixing plate (43).

6. A coupling structure according to claim 1, characterized in that: The shielding mechanism (6) comprises: A threaded barrel (61), the side of which is fixedly connected to a fixing frame (44); A shielding tube (62), wherein the threaded tube (61) is threadably connected to the inner cavity of the shielding tube (62), a stopper (63) is fixedly connected to the side of the inner wall of the shielding tube (62), the top end of the shielding tube (62) is fixedly connected to a positioning tube (64), the top end of the positioning tube (64) is fixedly connected to a connecting tube (65), and the top end of the connecting tube (65) is fixedly connected to a top ring (66).

7. A coupling structure according to claim 6, characterized in that: The inner cavity of the top ring (66) is slidably connected with a mounting rod (67), the outer wall of the mounting rod (67) is slidably connected with the top of the threaded tube (61), the side of the threaded tube (61) is fixedly connected with a connecting frame (611), the mounting rod (67) is slidably connected with the inner cavity of the connecting frame (611), the outer wall of the mounting rod (67) is fixedly connected with a moving block (68), the outer wall of the connecting tube (65) is fixedly connected with a positioning frame (69), an elastic rope (610) is arranged inside the positioning frame (69), one end of the elastic rope (610) is fixedly connected with the positioning frame (69), and the other end of the elastic rope (610) is fixedly connected with the threaded tube (61).

8. A coupling structure according to claim 1, characterized in that: The outer wall of the claw plate (1) is provided with a T-shaped hole, the outer wall of the claw plate (1) is provided with a screw hole, the inner cavity of the T-shaped hole is threadedly inserted with a fastening bolt (7), the outer wall of the fastening bolt (7) is threadedly inserted with the inner cavity of the screw hole, and the inner wall of the T-shaped hole is fixedly connected with a fitting cylinder (5).

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