A drone arm unit

Abstract

The utility model discloses an unmanned plane's machine arm unit, including unmanned plane shell, the front and back surface of unmanned plane shell all respectively fixedly connected with machine arm mounting seat, the inside of machine arm mounting seat all is equipped with adjustable plug -in seat, the inside of plug -in seat all plug -in has machine arm, still including fixed establishment, fixed establishment: it includes fixed axle, crosspiece, connecting rod, sliding top block and spring four, the inside left and right sides of plug -in seat all are fixedly connected with fixed axle, the outer surface of fixed axle all rotatablely connected with crosspiece, and the one end of crosspiece near unmanned plane shell all rotatablely connected with connecting rod, the inside of plug -in seat all slidingly connected with sliding top block, and the step surface of sliding top block's outer surface near unmanned plane shell's one side with plug -in seat's inner wall all are fixedly connected with spring four between, and this unmanned plane's machine arm unit makes machine arm to be able to carry out quick plug -in while, improves the connecting strength of machine arm to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to an arm unit for a UAV. Background Technology

[0002] With the rapid development of drone technology, its application in fields such as aerial photography, agricultural plant protection, logistics transportation, and inspection is becoming increasingly widespread. As the core support and power-bearing component of the drone, the performance of the drone arm is directly related to the stability, reliability, and flight efficiency of the entire aircraft.

[0003] Most existing drone arm units are fixed to the drone shell with bolts to ensure the connection strength between the arm and the drone. Some drones use plug-in connection for the arm, which uses spring force to snap it in place, which can improve the flexibility of the arm and facilitate the replacement or maintenance of the arm.

[0004] While existing drone arms use bolt connections for high strength, multiple bolts need to be removed when the arm is damaged, making the disassembly process complex. Another method involves connecting the arms via plug-in joints, which improves the efficiency of assembly and disassembly, but the connection strength is relatively weak. Therefore, we propose a drone arm unit. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide an arm unit for a drone. Through a fixing mechanism, the arm drives the sliding top block to move during the insertion process, thereby driving the connecting rod to move, causing the crossbar to move and squeeze the arm. With the engagement of the fixing block and the teeth, the arm is fixedly connected. This allows the arm to be quickly inserted while improving the connection strength of the arm to a certain extent, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an arm unit for a drone, comprising a drone shell, wherein arm mounting seats are fixedly connected to the front and rear surfaces of the drone shell, and the arm mounting seats are provided with adjustable plug-in seats inside, wherein an arm is plugged into the plug-in seats, and a fixing mechanism is also included.

[0007] The fixing mechanism includes a fixed shaft, a crossbar, a connecting rod, a sliding block, and four springs. Fixed shafts are fixedly connected to both the left and right sides of the connector. Crossbars are rotatably connected to the outer surfaces of the fixed shafts. A connecting rod is rotatably connected to the end of the crossbar near the drone shell. A sliding block is slidably connected inside the connector. Four springs are fixedly connected between the stepped surface of the outer surface of the sliding block near the drone shell and the inner wall of the connector. Each spring is sleeved on the rear side of the outer surface of the sliding block. The end of the connecting rod near the middle of the connector is rotatably connected to the side of the sliding block near the drone shell, located inside the same connector. Through this fixing mechanism, the arm moves the sliding block during the insertion process, thereby moving the connecting rod, causing the crossbar to move and press against the arm. This, combined with the engagement of the fixing block and teeth, secures the arm, allowing for rapid insertion while also improving the connection strength of the arm to some extent.

[0008] Furthermore, the fixing mechanism also includes a locking rod, a spring, a fixing block, and teeth. The locking rods are all slidably connected to the inside of the machine arm. A spring is fixedly connected between the lower surface of the locking rod and the inner wall of the machine arm. A fixing block is fixedly connected to the upper surface of the locking rod. Evenly distributed teeth are fixedly connected inside the plug-in seat. The fixing blocks are all installed in conjunction with the adjacent teeth on the same side to lock the machine arm.

[0009] Furthermore, the upper end of the locking rod is provided with a hole, into which a pin can be inserted to increase the locking strength of the arm.

[0010] Furthermore, each arm is fixedly connected to a motor mounting base on the side away from the drone shell. Each motor mounting base is fixedly connected to a brushless motor. A propeller is fixedly connected to the upper end of the output shaft of the brushless motor to provide driving force, thereby driving the drone to fly.

[0011] Furthermore, conductive plates are fixedly connected to the side of the arm closest to the drone shell, and connection ports are fixedly connected to the side of the sliding top block away from the drone shell. The input end of the connection port is electrically connected to the output end of the external controller, and the output end of the conductive plate is electrically connected to the input end of the brushless motor to transmit power.

[0012] Furthermore, each of the arm mounting bases is rotatably connected to a rotating cylinder, the inside of which has a spiral groove. The plug-in bases are fixedly connected to the outer surfaces of the vertically adjacent rotating cylinders. Each of the upper sides of the arm mounting bases is slidably connected to a slide rod II, and the lower side of the outer surface of the slide rod II is fixedly connected to a fixing pin. The fixing pins are slidably connected to the spiral grooves inside the vertically adjacent rotating cylinders. A spring II is fixedly connected between the lower surface of the slide rod II and the inner wall of the arm mounting base to store the arm.

[0013] Furthermore, each of the arm mounting bases is slidably connected with a slide rod, and a spring is fixedly connected between the lower side of the stepped surface of the outer surface of the slide rod and the inner wall of the arm mounting base. The lower end of each slide rod is provided with an inclined surface to limit the position of the retracted arm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The arm unit of this UAV has the following advantages:

[0015] The fixing mechanism causes the sliding top block to move during the insertion process, which in turn moves the connecting rod, causing the crossbar to move and press against the machine arm. The fixing block and the teeth mesh to fix the machine arm in place, allowing the machine arm to be quickly inserted while improving the connection strength of the machine arm to a certain extent. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the present invention in the form of a partial explosion.

[0019] Figure 4 This is a schematic diagram of the fixing mechanism of this utility model;

[0020] Figure 5 This is an enlarged structural diagram of point A in this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the rotating drum of this utility model.

[0022] In the diagram: 1. UAV shell, 2. Arm mounting base, 3. Arm, 4. Motor mounting base, 5. Brushless motor, 6. Propeller, 7. Fixing mechanism, 71. Locking rod, 72. Spring 3, 73. Fixing block, 74. Tooth, 75. Fixing shaft, 76. Crossbar, 77. Connecting rod, 78. Sliding top block, 79. Spring 4, 8. Slide rod 1, 9. Spring 1, 10. Slide rod 2, 11. Fixing pin, 12. Spring 2, 13. Rotary cylinder, 14. Plug-in socket, 15. Conductive sheet, 16. Connection port. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This embodiment provides a technical solution: an arm unit for a drone, including a drone shell 1. Arm mounting seats 2 are fixedly connected to the front and rear surfaces of the drone shell 1. Adjustable insertion seats 14 are provided inside each arm mounting seat 2, and arms 3 are inserted into the insertion seats 14. Rotary cylinders 13 are rotatably connected inside each arm mounting seat 2, and spiral grooves are formed inside each rotary cylinder 13. Insertion seats 14 are fixedly connected to the outer surfaces of vertically adjacent rotary cylinders 13. A sliding rod 10 is slidably connected to the upper side of each arm mounting seat 2, and a fixing pin 11 is fixedly connected to the lower side of the outer surface of the sliding rod 10. The fixing pins 11 are slidably connected to the spiral grooves inside the vertically adjacent rotary cylinders 13. Spring 12 is fixedly connected between the lower surface of slide bar 2 10 and the inner wall of arm mounting base 2. (The top cover of the upper end of arm mounting base 2 is fixedly connected by bolts. The bolts can be removed to open the top cover of arm mounting base 2 and remove and replace spring 12 to avoid the spring 12 becoming less elastic and unable to function properly after long-term use.) When arm 3 needs to be stored, press slide bar 2 10. Slide bar 2 10 moves downward, spring 13 retracts, and drives fixing pin 11 downward, causing fixing pin 11 to move in the spiral groove inside the rotating drum 13 (the spiral groove is a spiral groove with the central axis of the rotating drum 13 as the central axis), driving the rotating drum 13 to move downward. Rotating cylinder 13 causes the connector 14 to rotate around the central axis of cylinder 13, which in turn drives the arm 3 to rotate closer to the drone shell 1, bringing the arm 3 close to the drone shell 1 (the length of the spiral groove inside the left rotating cylinder 13 is greater than the length of the spiral groove inside the right rotating cylinder 13, allowing the left arm 3 to rotate at a greater angle and fit into the drone shell 1; when the arm 3 is fully folded and stored, the left arm 3 is located between the drone shell 1 and the right arm 3). The arm mounting base 2 is slidably connected to a slide rod 8, and a spring 9 is fixedly connected between the lower side of the stepped surface of the outer surface of the slide rod 8 and the inner wall of the arm mounting base 2 (the spring 9 can be removed and replaced). To prevent the spring 9 from weakening due to prolonged use and becoming unusable, the lower end of the slide bar 8 is provided with an inclined surface. During the rotation of the connector 14, the connector 14 presses against the inclined surface at the lower end of the slide bar 8, causing the slide bar 8 to move upward. The spring 9 relaxes until the connector 14 passes the slide bar 8. At this time, the spring 9 contracts, driving the slide bar 8 to reset, thus limiting the connector 14. When it is necessary to unlock the machine arm 3, the slide bar 8 is pulled upward. At this time, the spring 12 relaxes, pushing the slide bar 11 to reset, causing the fixing pin 11 to reset, causing the rotating drum 13 to reverse, driving the connector 14 to reverse, thereby unlocking and resetting the machine arm 3. It also includes a fixing mechanism 7.

[0025] Fixed mechanism 7 includes a fixed shaft 75, a crossbar 76, a connecting rod 77, a sliding top block 78, and four springs 79. Fixed shafts 75 are fixedly connected to both the left and right sides of the inside of the connector 14. Crossbars 76 are rotatably connected to the outer surface of the fixed shafts 75. Connecting rods 77 are rotatably connected to the end of the crossbars 76 near the drone housing 1. Sliding top blocks 78 are slidably connected inside the connector 14. Four springs 79 are fixedly connected between the stepped surface of the outer surface of the sliding top block 78 near the drone housing 1 and the inner wall of the connector 14. Four springs 79 are sleeved on the rear side of the outer surface of the sliding top block 78. The end of the connecting rod 77 near the middle of the connector 14 is connected to the sliding top block 78 located inside the same connector 14 near the drone housing. The body 1 is rotatably connected to one side. The fixing mechanism 7 also includes a locking rod 71, a spring 72, a fixing block 73, and teeth 74. The locking rod 71 is slidably connected to the inside of the arm 3. The upper end of the locking rod 71 has an insertion hole. The lower surface of the locking rod 71 is fixedly connected to the inner wall of the arm 3 with springs 72 (the arm 3 and the insertion seat 14 are fixed in two parts by bolts. The bolts can be removed to separate the upper and lower parts of the arm 3 and the insertion seat 14, so that the springs 72 and 79 can be disassembled and replaced to avoid the situation where the elasticity of the springs 72 and 79 weakens after long-term use and cannot be used normally). The upper surface of the locking rod 71 is fixedly connected to the fixing block 73. The inner surface of the insertion seat 14 is fixedly connected to the fixing block 73. Each part is fixedly connected with evenly distributed teeth 74. Each fixing block 73 engages with the adjacent teeth 74 on the same side. When the arm 3 needs to be installed, press down the locking rod 71 and insert the arm 3 into the connector 14. Spring 3 72 contracts, causing the arm 3 to press against the sliding top block 78. The sliding top block 78 moves into the connector 14. Spring 4 79 contracts, moving the connecting rod 77 and causing the crossbar 76 to rotate around the central axis of the fixed shaft 75. This causes the end of the crossbar 76 away from the drone housing 1 to approach and press against the side of the arm 3 closest to the drone housing 1. When the arm 3 can no longer be pushed, release the locking rod 71. Spring 3 72 relaxes, pushing the locking rod 71 upwards, causing the fixing block 73 to engage with the teeth 74. At this point, a pin can be inserted into the socket to further secure the locking rod 71 and increase the locking strength. When it is necessary to disassemble the arm 3, pull the pin out of the socket, then press down on the locking rod 71 to move the fixing block 73 and disengage it from the teeth 74, so that the arm 3 can be pulled out. The side of the arm 3 away from the drone shell 1 is fixedly connected to a motor mounting base 4. The inside of the motor mounting base 4 is fixedly connected to a brushless motor 5. The upper end of the output shaft of the brushless motor 5 is fixedly connected to a propeller 6. The side of the arm 3 close to the drone shell 1 is fixedly connected to a conductive plate 15. The side of the sliding top block 78 away from the drone shell 1 is fixedly connected to a connection port 16. The input end of the connection port 16 is electrically connected to the output end of an external controller.The output end of the conductive plate 15 is electrically connected to the input end of the brushless motor 5 (when the arm 3 is fully in contact with and fixed to the sliding block 78, the conductive plate 15 is in close contact with the connection port 16, thereby allowing power to be transmitted from the external controller to the brushless motor 5 through the conductive plate 15 and the connection port 16).

[0026] The working principle of the unmanned aerial vehicle (UAV) arm unit provided by this utility model is as follows: When the arm 3 needs to be retracted, press the slide bar 2 10, the slide bar 2 10 moves downward, the spring 2 13 contracts, and drives the fixing pin 11 to move downward, so that the fixing pin 11 moves in the spiral groove inside the rotating cylinder 13 (the spiral groove is a spiral groove with the central axis of the rotating cylinder 13 as the central axis), driving the rotating cylinder 13 to rotate, so that the insertion seat 14 rotates around the central axis of the rotating cylinder 13, driving the arm 3 to rotate towards the UAV shell 1, so that the arm 3 is close to the UAV shell 1 (the left side of the rotating cylinder 1). The length of the spiral groove inside cylinder 13 is greater than the length of the spiral groove inside the rotating cylinder 13 on the right, allowing the left arm 3 to rotate at a greater angle and fit into the drone shell 1. When the arms 3 are fully folded and stored, the left arms 3 are located between the drone shell 1 and the right arms 3. At the same time, during the rotation of the connector 14, the connector 14 presses against the inclined surface at the lower end of the slide bar 8, causing the slide bar 8 to move upward. The spring 9 relaxes until the connector 14 passes the slide bar 8. At this time, the spring 9 contracts, causing the slide bar 8 to return to its original position, thus limiting the position of the connector 14. When it is necessary to unlock the machine arm 3, pull the slide bar 8 upward. At this time, the spring 12 relaxes, pushing the slide bar 11 back to its original position, causing the fixing pin 11 to return to its original position, causing the rotating drum 13 to reverse, and driving the insertion seat 14 to reverse, thereby unlocking and resetting the machine arm 3. When it is necessary to install the machine arm 3, press the locking bar 71 downward and insert the machine arm 3 into the insertion seat 14. The spring 72 contracts, causing the machine arm 3 to press against the sliding top block 78. The sliding top block 78 moves into the insertion seat 14. The spring 79 contracts, driving the connecting rod 77 to move, causing the crossbar 76 to rotate around the central axis of the fixed shaft 75. Turn the lever 76 so that the end of the lever away from the drone housing 1 approaches and presses the side of the arm 3 that is close to the drone housing 1. When the arm 3 can no longer be pushed, release the locking lever 71, the spring 72 relaxes, and pushes the locking lever 71 to move upward, causing the fixing block 73 to engage with the teeth 74. At this time, a pin can be inserted into the socket to further fix and lock the locking lever 71, thereby increasing the locking strength. When it is necessary to disassemble the arm 3, pull the pin out of the socket, and then press the locking lever 71 downward to move the fixing block 73 and disengage it from the teeth 74, so that the arm 3 can be pulled out.

[0027] It is worth noting that the brushless motor 15 disclosed in the above embodiments can be MN5215 KV300.

[0028] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An arm unit for a drone, comprising a drone housing (1), wherein arm mounting seats (2) are fixedly connected to the front and rear surfaces of the drone housing (1), and each arm mounting seat (2) is provided with an adjustable insertion seat (14), into which an arm (3) is inserted, characterized in that: It also includes fixed mechanisms (7); Fixed mechanism (7): It includes a fixed shaft (75), a crossbar (76), a connecting rod (77), a sliding top block (78), and a spring four (79). The fixed shaft (75) is fixedly connected to both the left and right sides inside the plug-in seat (14). The crossbar (76) is rotatably connected to the outer surface of the fixed shaft (75). The connecting rod (77) is rotatably connected to the end of the crossbar (76) near the UAV shell (1). The sliding top block (78) is slidably connected to the inside of the plug-in seat (14). The step surface of the outer surface of the sliding top block (78) near the UAV shell (1) is fixedly connected to the inner wall of the plug-in seat (14). The spring four (79) is sleeved on the rear side of the outer surface of the sliding top block (78). The end of the connecting rod (77) near the middle of the plug-in seat (14) is rotatably connected to the side of the sliding top block (78) near the UAV shell (1) inside the same plug-in seat (14).

2. The arm unit of a UAV according to claim 1, characterized in that: The fixing mechanism (7) also includes a locking rod (71), a spring (72), a fixing block (73), and teeth (74). The locking rod (71) is slidably connected to the inside of the arm (3). The lower surface of the locking rod (71) is fixedly connected to the inner wall of the arm (3). The upper surface of the locking rod (71) is fixedly connected to the fixing block (73). The inside of the plug-in seat (14) is fixedly connected to evenly distributed teeth (74). The fixing block (73) is installed in conjunction with the adjacent teeth (74) on the same side.

3. The arm unit of a UAV according to claim 2, characterized in that: The upper end of the locking rod (71) is provided with an insertion hole.

4. The arm unit of a UAV according to claim 1, characterized in that: The arm (3) is fixedly connected to a motor mounting base (4) on the side away from the UAV shell (1). A brushless motor (5) is fixedly connected inside the motor mounting base (4). A propeller (6) is fixedly connected to the upper end of the output shaft of the brushless motor (5).

5. The arm unit of a UAV according to claim 4, characterized in that: The arm (3) is fixedly connected to a conductive sheet (15) on the side close to the drone housing (1), and the sliding top block (78) is fixedly connected to a connection port (16) on the side away from the drone housing (1). The input end of the connection port (16) is electrically connected to the output end of the external controller, and the output end of the conductive sheet (15) is electrically connected to the input end of the brushless motor (5).

6. The arm unit of a UAV according to claim 1, characterized in that: The arm mounting base (2) is rotatably connected to a rotating cylinder (13). The rotating cylinder (13) has a spiral groove inside. The plug-in base (14) is fixedly connected to the outer surface of the vertically adjacent rotating cylinder (13). The upper side of the arm mounting base (2) is slidably connected to a slide rod (10). The lower side of the outer surface of the slide rod (10) is fixedly connected to a fixing pin (11). The fixing pin (11) is slidably connected to the spiral groove inside the vertically adjacent rotating cylinder (13). The lower surface of the slide rod (10) and the inner wall of the arm mounting base (2) are fixedly connected to a spring (12).

7. The arm unit of a UAV according to claim 1, characterized in that: The arm mounting base (2) is slidably connected to a slide rod (8). A spring (9) is fixedly connected between the lower side of the stepped surface of the outer surface of the slide rod (8) and the inner wall of the arm mounting base (2). The lower end of the slide rod (8) is provided with an inclined surface.

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