Waterproof parachute opening mechanism of unmanned aerial vehicle

Abstract

The utility model provides a kind of parachute opening mechanism of waterproof unmanned plane, including the top umbrella hatch cover mechanism being arranged in the rear side of partition, further include the clamping stopper that can reciprocate along straight line, and the drive assembly of driving the movement of this clamping stopper;Clamping stopper penetrates partition, its penetration part with partition is provided with the guide sealing element that realizes dynamic sealing, clamping stopper has first working position and second working position;When it is in the first working position, its end is inserted and blocks top umbrella hatch cover mechanism, so that it keeps compression lock state;When it is driven to move to the second working position by the drive assembly, its end is extracted from top umbrella hatch cover mechanism, removes the block to it, and top umbrella hatch cover mechanism opens immediately.The utility model can realize the good sealing effect to equipment cabin by the effect of guide sealing element, and improves the stable performance of electronic component work in equipment cabin.

Description

Technical Field

[0001] This utility model relates to the field of parachute opening equipment technology, specifically to a parachute opening mechanism for a waterproof drone. Background Technology

[0002] A drone is a self-powered, radio-controlled or autonomously flying unmanned aerial vehicle that can perform multiple tasks and be used multiple times.

[0003] Existing drone parachute deployment mechanisms typically employ a simple mechanical structure where a servo arm directly presses against the parachute canopy opening. Taking the Feiyuan drone as an example, its deployment process is as follows: After a deployment signal is given, the servo arm rotates, releasing it from the parachute canopy opening. The canopy-lifting mechanism at the bottom of the opening is typically driven by a compression spring placed inside. After the servo arm disengages from the opening, it loses its restraint on the canopy, and the restoring force of the spring lifts the canopy, thus deploying the parachute.

[0004] However, this method results in poor sealing performance due to the large clearance or gap between the servo arm and the opening of the parachute canopy. This is especially true when used in humid, rainy, or aquatic environments, and when the drone is being recovered from the sea. Moisture can easily seep into the drone's equipment compartment through these gaps, damaging internal circuits and electronic components, affecting the normal operation of the drone, and shortening its lifespan. Utility Model Content

[0005] In view of this, the present invention provides a parachute opening mechanism for a waterproof drone. It can achieve efficient sealing during the automatic unfolding of the parachute canopy mechanism by using a guide seal to achieve the sealing operation of the locking component during the linear reciprocating motion of the locking component. This solves the problem that there is a large clearance or gap between the servo arm and the opening of the parachute canopy in traditional drones, resulting in poor sealing performance. This is especially true when used in humid, rainy, or aquatic environments, or when the drone is floating and being recovered at sea. Moisture can easily seep into the drone's equipment compartment through these gaps, causing damage to internal circuits and electronic components, affecting the normal operation of the drone, and shortening its service life.

[0006] To solve the above-mentioned technical problems, this utility model provides a parachute opening mechanism for a waterproof unmanned aerial vehicle (UAV), including a top parachute canopy mechanism disposed on the rear side of a partition, a locking member capable of reciprocating along a straight line, and a driving component for driving the locking member to move; the locking member penetrates the partition, and a guide seal is provided at the penetration part between the locking member and the partition to achieve dynamic sealing; the locking member has a first working position and a second working position; when it is in the first working position, its end is inserted into and blocks the top parachute canopy mechanism, keeping it in a compressed and locked state; when it is driven by the driving component to move to the second working position, its end is pulled out from the top parachute canopy mechanism, releasing the obstruction, and the top parachute canopy mechanism then opens. This invention allows the drive mechanism to retract the blocking component along the axis of the guide seal when the umbrella needs to be opened, until its end disengages from the top umbrella cover mechanism. This releases the obstruction to the top umbrella cover mechanism, enabling it to open quickly and efficiently. During this process, the guide seal not only significantly improves the sealing effect of the equipment compartment but also saves installation space and enhances the stability of the electronic components inside the equipment compartment.

[0007] The drive assembly includes a servo motor located on the front side of the partition. A rocker arm is located at the end of the output shaft of the servo motor, and a connecting rod is hinged to the other end of the rocker arm. A retaining element is hinged to the other end of the connecting rod. Both ends of the connecting rod are hinged to the rocker arm and the retaining element through bearings.

[0008] The drive assembly includes a telescopic push rod disposed on the front side of the partition, and a stopper disposed on the output rod end of the telescopic push rod. The telescopic push rod can be any one of an electric push rod, a pneumatic push rod, or a hydraulic push rod.

[0009] The drive assembly includes a linear slide table located on the front side of the partition, a stopper located on the slider of the linear slide table, and the drive component of the linear slide table is a motor or a servo motor.

[0010] A mounting hole is provided on the partition plate and on the axis of the retaining member. The guide seal includes a sliding sleeve disposed inside the mounting hole and at least one sealing ring disposed on the sliding sleeve and between it and the retaining member. The sealing ring is fixed by an annular groove in the inner hole of the sliding sleeve.

[0011] One end of the sliding sleeve is provided with a mounting flange, and the other end of the sliding sleeve is threaded with a lock nut. The mounting flange and the lock nut are located on both sides of the partition. A sealing gasket for static sealing is provided between the clamping contact surfaces of the sliding sleeve and the partition. The mounting flange and the lock nut are located on the front and rear sides of the partition, respectively. By tightening the lock nut, the mounting flange and the lock nut together clamp the partition, thereby fixing the sliding sleeve and the partition.

[0012] The top parachute canopy mechanism includes a bracket located at the bottom of the canopy, with a locking hole on the bracket for inserting a card stop. The drive assembly can drive the card stop to insert into the locking hole. The bracket is a stainless steel U-shaped plate structure, and the locking hole is a long strip hole in the shape of a runway.

[0013] The upper part of the horizontal section of the hanger is detachably mounted on the lower part of the parachute canopy by screws. A top rod is installed on the lower part of the horizontal section of the hanger. A fixing cylinder is installed at the lower part of the top rod. An elastic element is installed inside the fixing cylinder. The elastic element is a steel compression spring or a tin bronze spring. The upper part of the elastic element abuts against the lower part of the top rod. The fixing cylinder is located on the rear side of the partition. A sealing ring is installed between the fixing cylinder and the partition.

[0014] The side wall of the fixed cylinder has ventilation holes.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Significantly improved sealing performance, ensuring stable operation of electronic components: This invention achieves multiple seals through guide seals. Specifically, the sealing gasket between the sliding sleeve and the partition provides a static seal, the sealing ring between the sliding sleeve and the retaining element provides a dynamic seal, and the sealing ring between the fixed cylinder and the partition provides a seal at the fixed location. This forms a comprehensive waterproof structure, effectively preventing rainwater and moisture from entering the equipment compartment and avoiding damage to internal electronic components such as flight control modules and sensors due to water ingress. This significantly improves the operational stability of the UAV in humid or rainy environments. It solves the technical problem of sealing failure in existing structures.

[0016] 2. Improve the reliability of parachute opening and unlocking, and avoid safety hazards: The servo motor, rocker arm, connecting rod and guide seals work together to realize the linear transmission structure of the locking component. The rotational motion of the servo motor is converted into the linear motion of the locking component, which greatly improves the unlocking stroke accuracy. This avoids the mis-locking caused by vibration in the existing rocker arm rotation structure, as well as the problem of poor sealing of the equipment compartment caused by the need to open a large space in the bulkhead.

[0017] 3. Strong adaptability to meet diverse needs: In addition to the structure in which the drive component of this utility model adopts a servo motor, rocker arm and linkage to drive the stop part to move along the axis of the guide seal, it can also be replaced with a telescopic push rod or a linear slide. It can adapt to the load and parachute opening force requirements of different UAVs without modifying other components; the elastic element supports the replacement of compression spring and tin bronze spring sheet to adapt to the lifting stroke of different parachute canopies, which solves the problem of limited adaptability of existing structures.

[0018] 4. Stable and reliable parachute opening, reducing safety risks: The locking mechanism in this invention uses a sliding sleeve for precise guidance, preventing movement deviation; the fisheye bearing in the servo linkage drive reduces hinge wear; the linear drive of the telescopic push rod and linear slide provides rapid response; all three drive schemes ensure smooth movement of the locking mechanism, avoiding jamming; simultaneously, the racetrack-shaped locking hole on the bracket accommodates minor deviations of the locking mechanism, further improving unlocking stability. Furthermore, the vent holes in the fixed cylinder balance the air pressure during the movement of the elastic element, ensuring the parachute canopy opens quickly and smoothly, effectively reducing the risk of parachute opening failure due to mechanism jamming. This effect directly addresses the safety risk caused by poor parachute opening stability in the background technology.

[0019] 5. High ease of maintenance and extended service life: The bracket in this utility model is detachably connected to the umbrella compartment cover by stainless steel screws, and the guide seal is detachably connected to the partition by locking nuts. When the bracket is worn or the sealing ring is aged, it can be disassembled and replaced separately without disassembling the entire mechanism, which reduces the difficulty and cost of maintenance and effectively extends the overall service life of the mechanism. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the partition, drive assembly, and top parachute canopy mechanism of the waterproof UAV of this utility model. Figure 2 This is a schematic diagram of the top parachute canopy mechanism in the parachute opening mechanism of the waterproof UAV of this utility model; Figure 3 This is a schematic diagram of the drive component in the parachute opening mechanism of the waterproof drone of this utility model; Figure 4 This is a schematic diagram of the fixed cylinder and top rod in the parachute opening mechanism of the waterproof drone of this utility model; Figure 5 This is a schematic diagram of the fixed cylinder, elastic element, and top rod in the parachute opening mechanism of the waterproof drone of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 100, partition plate; 101, mounting hole; 200, top parachute canopy mechanism; 210, hanger; 211, locking hole; 220, top rod; 230, fixing cylinder; 240, elastic element; 300, locking element; 400, drive assembly; 410, servo motor; 420, rocker arm; 430, connecting rod; 500, guide seal; 510, sliding sleeve; 520, sealing ring; 530, mounting flange; 540, lock nut; 550, sealing gasket. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-5 As shown: This embodiment provides a parachute opening mechanism for a waterproof unmanned aerial vehicle (UAV), including a top parachute canopy mechanism 200 disposed on the rear side of a partition 100, a retaining member 300 capable of reciprocating linear motion, and a drive assembly 400 for driving the retaining member 300. The retaining member 300 penetrates the partition 100, and a guide seal 500 for achieving dynamic sealing is provided at the penetration portion between the retaining member 300 and the partition 100. The retaining member 300 has a first working position and a second working position. When it is in the first working position, its end inserts into and blocks the top parachute canopy mechanism 200, keeping it in a compressed and locked state. When it is driven by the drive assembly 400 to move to the second working position... Its end is pulled out from the top umbrella cover mechanism 200, releasing the obstruction, and the top umbrella cover mechanism 200 opens immediately. This utility model can be used to drive the blocking part 300 along the axis of the guide seal 500 to retract when the umbrella opening operation is required, until its end is disengaged from the top umbrella cover mechanism 200, thus releasing the obstruction to the top umbrella cover mechanism 200. The top umbrella cover mechanism 200 can then achieve a fast and efficient opening operation. In this process, due to the role of the guide seal 500, not only is the sealing effect of the equipment compartment greatly improved, but also the installation space is saved and the stability of the electronic components in the equipment compartment is improved.

[0024] According to one embodiment of the present invention, such as Figure 1 and Figure 3As shown, the drive assembly 400 includes a servo motor 410 disposed on the front side of the partition 100. A rocker arm 420 is disposed at the output shaft end of the servo motor 410, and a connecting rod 430 is hinged to the other end of the rocker arm 420. A stop 300 is hinged to the other end of the connecting rod 430. The rocker arm 420 is made of nylon because nylon is lightweight, wear-resistant, and has a certain degree of elasticity, which can buffer vibrations during transmission and avoid rigid impacts. The stop connecting rod 430 is made of stainless steel because stainless steel has high strength and is not easily deformed, ensuring transmission precision. The connecting rod 430 is hinged to the rocker arm 420 and the retaining member 300 at both ends through brass fisheye bearings. The brass fisheye bearings have self-lubricating properties, which can reduce the rotational friction between the rocker arm 420, the connecting rod 430 and the retaining member 300, reduce transmission resistance, avoid wear and jamming caused by long-term use, and ensure the smooth movement of the retaining member 300. When the servo motor 410 is working, the output shaft drives the rocker arm 420 to rotate. The rocker arm 420 converts the rotational motion into the linear motion of the retaining member 300 through the connecting rod 430, realizing the extension and retraction of the retaining member 300. The brass fisheye bearing reduces hinge wear between the connecting rod 430, rocker arm 420, and stopper 300, improving motion stability. This invention can drive the rocker arm 420, connecting rod 430, and stopper 300 at the end of connecting rod 430 to move along the axis of guide seal 500 under the guidance and limiting action of guide seal 500, greatly improving the stability of parachute opening and the sealing performance of the equipment compartment throughout the process.

[0025] Another embodiment of the drive assembly 400 includes a telescopic push rod disposed on the front side of the partition 100, and a stop 300 disposed at the output rod end of the telescopic push rod. The telescopic push rod can be any one of an electric push rod, a pneumatic push rod, or a hydraulic push rod. The telescopic push rod directly drives the stop 300 to move along the axis of the sliding sleeve 510 through the linear extension and retraction of the output rod. It has a simple structure and fast response speed, and is suitable for scenarios with high requirements for installation space. This utility model can pull the stop 300 along the axis of the guide seal 500 for efficient operation by extending and retracting the output rod of the push rod. The telescopic push rod directly drives the stop 300 to move along the axis of the guide seal 500. It has a simple structure, high transmission efficiency, and does not require a complex connecting rod 430 mechanism, further saving installation space and greatly improving the umbrella opening efficiency.

[0026] Another embodiment of the drive assembly 400 includes a linear slide table disposed on the front side of the partition 100, and a stop 300 disposed on the slider of the linear slide table. The drive component of the linear slide table is a motor or servo motor. The linear slide table drives a ball screw or synchronous belt to move through the drive component, thereby driving the slider to move linearly along the slide rail, realizing the reciprocating motion of the stop 300. This solution has high motion accuracy and is suitable for scenarios with strict requirements for the position control of the stop 300. The stop 300 is fixed to the slider of the linear slide table with bolts. The drive component of the linear slide table drives the slider to move linearly along the slide rail, thereby driving the stop 300 to move. This is suitable for UAV parachute opening scenarios with high motion accuracy requirements. Moreover, the slide rail is hardened, which has strong wear resistance and extends the service life of the mechanism. This utility model can drive the slider on the linear slide table to move along the slide rail on the linear slide table by rotating the output shaft of the drive component of the linear slide table, making the operation more convenient.

[0027] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, a mounting hole 101 is provided on the partition 100 and on the axis of the retaining member 300. The guide seal 500 includes a sliding sleeve 510 disposed inside the mounting hole 101, and at least one sealing ring 520 disposed in the inner hole of the sliding sleeve 510 and between the sliding sleeve 510 and the retaining member 300. The sliding sleeve 510 is made of brass because brass has good wear resistance and machining precision, which can provide stable guidance for the retaining member 300 and avoid wear and deformation caused by long-term movement. The sealing ring 520 is made of nitrile rubber because nitrile rubber has excellent wear resistance and machining precision. Its oil resistance, aging resistance, and elasticity allow it to fit tightly against the outer circumference of the retaining element 300, achieving dynamic sealing and preventing rainwater and water vapor from entering the equipment compartment through the gap between the retaining element 300 and the sliding sleeve 510. The sealing ring 520 is fixed by the annular groove in the inner hole of the sliding sleeve 510, preventing the sealing ring 520 from shifting during the movement of the retaining element 300. This utility model can achieve a good seal between the mounting hole 101 of the partition 100 and the guide seal 500, as well as between the guide seal 500 and the retaining element 300, through the sealing ring 520, resulting in better sealing performance.

[0028] One end of the sliding sleeve 510 is provided with a mounting flange 530, and the other end of the sliding sleeve 510 is threadedly connected with a lock nut 540. The mounting flange 530 and the lock nut 540 are located on both sides of the partition 100, and the lock nut 540 is made of stainless steel. A sealing gasket 550 is provided between the clamping contact surfaces of the sliding sleeve 510 and the partition 100 to achieve a static seal. The sealing gasket 550 is made of fluororubber. Because fluororubber is resistant to high temperature and chemical corrosion and has strong sealing performance, it can fill the tiny gaps between the sliding sleeve 510 and the partition 100, preventing moisture from seeping in from the static connection part, forming a "dynamic seal plus static seal". The double waterproof structure specifically features an integrally formed mounting flange 530 and sliding sleeve 510. The other end of the sliding sleeve 510 has an external thread on its outer circumferential surface, and a locking nut 540 is threaded onto this thread. The locking nut 540 is made of stainless steel, which boasts high strength and corrosion resistance, ensuring it will not rust during long-term use and guaranteeing the stability of the sliding sleeve 510. The mounting flange 530 and locking nut 540 are located on the front and rear sides of the partition 100, respectively. By tightening the locking nut 540, the mounting flange 530 and locking nut 540 together clamp the partition 100, thus fixing the sliding sleeve 510 to the partition 100. This invention allows for quick installation and fixing of the sliding sleeve 510 using the locking nut 540.

[0029] According to another embodiment of the present invention, such as 2 and Figure 3 As shown, the top parachute canopy mechanism 200 includes a bracket 210 disposed at the lower part of the canopy. The bracket 210 has a locking hole 211 for inserting a locking member 300. The drive assembly 400 can drive the locking member 300 to insert into the locking hole 211. The bracket 210 is a stainless steel U-shaped plate structure. The stainless steel bracket 210 has high strength, is rust-resistant, and can withstand the pushing force of the elastic member 240 without deformation. The locking hole 211 is a runway-shaped elongated hole. The runway-shaped structure can accommodate minor deviations in the movement of the locking member 300, avoiding the problem of the locking member 300 being unable to be inserted or removed due to installation errors, and ensuring the reliability of locking and unlocking. This utility model can use the drive assembly 400 to drive the locking member 300 to be pulled out from the runway-shaped elongated hole, thereby realizing the release operation of the top parachute canopy mechanism 200 and achieving its efficient automatic parachute opening operation.

[0030] According to another embodiment of the present invention, such as Figure 1 , Figure 4 and Figure 5As shown, the upper horizontal part of the bracket 210 is detachably mounted on the lower part of the parachute canopy using stainless steel screws. These screws are rust-proof and provide reliable connections. The detachable design facilitates maintenance and replacement of the parachute canopy or bracket 210. A top rod 220 is welded to the lower horizontal part of the bracket 210. The top rod 220 is made of steel, which has high strength and rigidity, effectively transmitting the pushing force of the elastic element 240. A fixing cylinder 230 is located at the lower part of the top rod 220. The fixing cylinder 230 is made of aluminum alloy, which is lightweight yet possesses sufficient strength, reducing the overall weight of the mechanism while ensuring structural stability. An elastic element 240 is installed inside the fixing cylinder 230. The elastic element 240 is either a steel compression spring or a tin bronze spring. The steel compression spring is made of spring steel, which has a high elastic limit and long fatigue life, maintaining compression and reset performance over a long period. The tin bronze spring has excellent elasticity and corrosion resistance, suitable for… In installation scenarios with limited space, the upper part of the elastic element 240 abuts against the lower part of the top rod 220. When the locking member 300 locks the bracket 210, the top rod 220 compresses the elastic element 240, causing the elastic element 240 to store restoring elastic force. The upper part of the elastic element 240 abuts against the lower part of the top rod 220. The fixing cylinder 230 is bolted to the rear side of the partition 100. A fluororubber sealing ring 520 is provided between the fixing cylinder 230 and the partition 100. The fluororubber sealing ring 520 further prevents rainwater from seeping in from the connection between the fixing cylinder 230 and the partition 100, enhancing the waterproof performance of the equipment compartment. This utility model allows the compressed elastic element 240 to push the top rod 220 upward under its own restoring elastic force after the locking member 300 separates from the locking hole 211, so as to efficiently lift and open the bracket 210 and the umbrella canopy installed on the bracket 210.

[0031] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the side wall of the fixed cylinder 230 is provided with a vent hole. When the elastic element 240 quickly resets and pushes the top rod 220, the vent hole can balance the air pressure inside the fixed cylinder 230 and the outside in real time, avoiding the formation of negative or positive pressure inside the fixed cylinder 230 that hinders the movement of the top rod 220, ensuring that the parachute canopy opens quickly and smoothly, and effectively reducing the risk of parachute opening failure caused by air pressure jamming. This utility model can balance the air pressure when the elastic element 240 moves through the vent hole of the fixed cylinder 230, ensuring that the parachute canopy opens quickly and smoothly, and effectively reducing the risk of parachute opening failure caused by mechanism jamming.

[0032] Working principle and usage of this utility model: First, it needs to be clarified that the parachute opening mechanism involved in this utility model is mainly used for the automatic opening of the parachute canopy of a drone. This utility model takes the automatic opening of the parachute canopy of the Feiyuan drone as an example to explain its working principle and usage method in detail. The working principle is as follows: When the UAV is flying normally, the blocking component 300 is in the first working position: its end passes through the sliding sleeve 510 of the guide seal 500 and inserts into the runway-shaped locking hole 211 of the bracket 210 in the top parachute canopy mechanism 200, thus blocking the bracket 210; at this time, the top rod 220 at the bottom of the bracket 210 compresses the elastic element 240 in the fixing cylinder 230, and the elastic element 240 is in a compressed and energy-storing state, and the parachute canopy remains in a compressed and locked state; the dynamic sealing ring 520 and the static sealing gasket 550 of the guide seal 500 and the fluororubber sealing ring 520 of the fixing cylinder 230 together prevent external moisture from entering the equipment compartment and protect the internal electronic components. When the drone encounters an emergency and needs to deploy its parachute, the drone's flight control system sends a start signal to the drive component 400: The operating principles of the three driving methods are explained below; If a servo motor 410 is used for driving: the output shaft of the servo motor 410 rotates, causing the nylon rocker arm 420 to swing around the output shaft; the rocker arm 420 pulls the stainless steel connecting rod 430 through the brass fisheye bearing, and the connecting rod 430, under the buffering effect of the fisheye bearing, causes the retaining part 300 to retract backward along the axis of the nitrile rubber sealing ring 520 in the inner hole of the brass sliding sleeve 510. During this process, the guide seal 500 guides and seals the retaining part 300. If an electric push rod is used for driving: the output rod of the electric push rod is controlled by an electrical signal to retract, directly pulling the end stop 300 to move backward along the axis of the guide seal 500; If a linear slide is used for driving: the servo motor of the linear slide drives the ball screw of the linear slide to rotate, which causes the slider to move backward along the slide rail. The slider causes the stop 300 on it to retract along the axis of the guide seal 500.

[0033] Any of the three driving methods described above can be used. When the stopper 300 moves to the second working position, its end is completely pulled out of the locking hole 211 of the bracket 210, releasing the obstruction to the bracket 210; at this time, the compressed elastic element 240 inside the fixed cylinder 230 pushes the steel push rod 220 upward under its own restoring elastic force; the push rod 220 pushes the stainless steel U-shaped bracket 210 welded to it, and the bracket 210 drives the parachute canopy connected by stainless steel screws to move upward; at the same time, the vent holes on the side wall of the fixed cylinder 230 balance the air pressure inside the fixed cylinder 230 in real time, avoiding air pressure from hindering the movement of the push rod 220, ensuring that the parachute canopy opens quickly and smoothly, and the parachute is deployed immediately, realizing the emergency landing protection of the UAV. The usage method is as follows: The installation follows these steps. S1. Pre-treatment of partition 100: On the partition 100 of the UAV equipment compartment, an installation hole 101 is opened along the axis of the preset retaining member 300. The diameter of the installation hole 101 is adapted to the outer diameter of the brass sliding sleeve 510. S2. Installation of guide seal 500: Fit the fluororubber gasket 550 onto the mounting flange 530 side of the brass sliding sleeve 510, and embed the sliding sleeve 510 into the mounting hole 101 of the partition 100, so that the mounting flange 530 fits against the front side of the partition 100 and the gasket 550 is sandwiched between the sliding sleeve 510 and the partition 100; thread the stainless steel lock nut 540 onto the external thread end of the sliding sleeve 510 from the rear side of the partition 100, and tighten the lock nut 540 with a wrench to clamp and fix the sliding sleeve 510 and the partition 100, thus completing the static seal; embed the nitrile rubber sealing ring 520 into the annular groove in the inner hole of the sliding sleeve 510, and insert the retaining member 300 through the sliding sleeve 510 from the front side of the partition 100, ensuring that the sealing ring 520 and the outer circumferential surface of the retaining member 300 are tightly fitted, thus completing the dynamic seal; S3, Driver Component 400 Installation: Select Driver Component 400 according to the drone's requirements: Servo 410 drive: The mounting housing of servo 410 is fixed to the front side of partition 100 with bolts. The output shaft of servo 410 faces the retaining member 300. The output shaft of servo 410 is connected to nylon rocker arm 420 through a flat key. The other end of rocker arm 420 is hinged to stainless steel connecting rod 430 through brass fisheye bearing. The other end of connecting rod 430 is hinged to the front end of retaining member 300 through brass fisheye bearing. When an electric actuator is used: the electric actuator is fixed to the front side of the partition 100 by a bracket, the output rod axis of the electric actuator is aligned with the axis of the retaining member 300, and the front end of the retaining member 300 is connected to the end of the output rod by a thread. When using a linear slide drive: the linear slide is fixed to the front of the partition 100 with bolts, the slider axis of the linear slide is aligned with the axis of the stop 300, the servo motor of the linear slide is connected to the ball screw drive of the slide, and the front end of the stop 300 is fixed to the slider with bolts. You can choose any one of the three driving methods mentioned above. S4. Installation of the top canopy cover mechanism 200: Place the fluororubber sealing ring 520 on the upper end of the aluminum alloy fixing cylinder 230, and fix the fixing cylinder 230 to the rear side of the partition 100 with bolts. Note that the axis of the fixing cylinder 230 is perpendicular to the axis of the locking member 300 and corresponds to the position of the top rod 220. Place a steel compression spring or tin bronze spring in the fixing cylinder 230, and insert the steel top rod 220 from the upper end of the fixing cylinder 230 so that the lower end of the top rod 220 abuts against the upper end of the elastic member 240. Connect the upper part of the horizontal section of the stainless steel U-shaped bracket 210 to the lower part of the canopy cover with stainless steel screws, and weld the lower part of the horizontal section of the bracket 210 to the upper end of the top rod 220. Press down on the canopy cover to compress the elastic member 240 with the top rod 220 until the racetrack-shaped locking hole 211 of the bracket 210 is aligned with the end of the locking member 300. Push the locking member 300 into the locking hole 211 to complete the overall installation. Daily use and opening the umbrella are as follows: Normal operation: After installation, the retaining clip 300 is always in the first working position, with its end inserted into the locking hole 211 of the bracket 210, and the umbrella cover remains locked; regularly check whether the sealing ring 520 and sealing gasket 550 are aging, and whether the locking nut 540 is loose, to ensure sealing performance; Emergency Parachute Deployment: When the UAV flight control system detects an emergency (such as power failure or sudden altitude drop), it automatically sends an electrical signal to the drive assembly 400; the drive assembly 400 drives the latch 300 to retract to the second working position, the elastic element 240 pushes the push rod 220 and the bracket 210, and the parachute canopy opens automatically, completing the parachute deployment; if the flight control system malfunctions, the drive assembly 400 can be manually triggered by the emergency parachute deployment button on the UAV remote controller to achieve parachute deployment; The maintenance procedure is as follows: Seal replacement: If moisture is found to have seeped into the equipment compartment, disassembly and maintenance are required: unscrew the locking nut 540 on the back of the partition 100, remove the sliding sleeve 510, replace the aged nitrile rubber sealing ring 520 or fluororubber sealing gasket 550, reinstall the sliding sleeve 510 and tighten the locking nut 540. Replacement of vulnerable parts: If the movement of the stop part 300 is stuck, check if the brass spherical bearing is worn. If it is worn, remove the connecting rod 430 and replace the spherical bearing. If the elasticity of the elastic part 240 decreases, unscrew the fixing bolt of the fixing cylinder 230, remove the old elastic part 240, and replace it with a new steel compression spring or tin bronze spring. Parachute canopy maintenance: If the parachute canopy does not open smoothly, check if the vent holes of the fixing cylinder 230 are blocked, and use a thin wire to clear the vent holes; if the bracket 210 is damaged, unscrew the stainless steel screws, remove the old bracket 210, replace it with a new bracket 210 and reconnect the parachute canopy.

[0034] This invention utilizes the guide seal 500 to achieve efficient sealing of the latch 300 during its linear reciprocating motion, enabling the automatic deployment of the parachute canopy mechanism. This solves the problem of poor sealing performance caused by the large clearance or gap between the servo motor 410 rocker arm 420 and the parachute canopy opening, especially in humid, rainy, or aquatic environments, and when the drone is floating and being recovered at sea. Moisture can easily seep into the drone's equipment compartment through these gaps, damaging internal circuits and electronic components, affecting the drone's normal operation, and shortening its lifespan.

[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A parachute opening mechanism for a waterproof unmanned aerial vehicle, comprising a top parachute canopy mechanism (200) disposed on the rear side of a partition (100), characterized in that: It also includes a retaining element (300) capable of reciprocating along a straight line, and a drive assembly (400) for driving the retaining element (300) to move; the retaining element (300) penetrates the partition (100), and a guide seal (500) is provided at the penetration part between the retaining element (300) and the partition (100) to achieve dynamic sealing; the retaining element (300) has a first working position and a second working position; when it is in the first working position, its end is inserted into and blocks the top umbrella canopy cover mechanism (200) to keep it in a compressed and locked state; When it is driven to the second working position by the drive assembly (400), its end is pulled out from the top parachute canopy mechanism (200), releasing the obstruction, and the top parachute canopy mechanism (200) then opens.

2. The parachute opening mechanism of the waterproof drone as described in claim 1, characterized in that: The drive assembly (400) includes a servo motor (410) disposed on the front side of the partition (100), a rocker arm (420) is disposed at the end of the output shaft of the servo motor (410), a connecting rod (430) is hinged to the other end of the rocker arm (420), and a stop (300) is hinged to the other end of the rocker arm (420).

3. The parachute opening mechanism of the waterproof drone as described in claim 1, characterized in that: The drive assembly (400) includes a telescopic push rod disposed on the front side of the partition (100), and the stop (300) is disposed at the output rod end of the telescopic push rod.

4. The parachute opening mechanism of the waterproof drone as described in claim 1, characterized in that: The drive assembly (400) includes a linear slide table disposed on the front side of the partition (100), and the stop (300) is disposed on the slider of the linear slide table.

5. The parachute opening mechanism of the waterproof drone as described in claim 1, characterized in that: The partition (100) is provided with a mounting hole (101) on the axis of the retaining member (300). The guide seal (500) includes a sliding sleeve (510) disposed inside the mounting hole (101) and at least one sealing ring (520) disposed on the sliding sleeve (510) and between it and the retaining member (300).

6. The parachute opening mechanism of the waterproof drone as described in claim 5, characterized in that: One end of the sliding sleeve (510) is provided with a mounting flange (530), and the other end of the sliding sleeve (510) is threadedly connected with a locking nut (540). The mounting flange (530) and the locking nut (540) are respectively located on both sides of the partition plate (100). A sealing gasket (550) for static sealing is provided between the clamping contact surfaces of the sliding sleeve (510) and the partition plate (100).

7. The parachute opening mechanism of the waterproof drone as described in claim 1, characterized in that: The top parachute canopy mechanism (200) includes a bracket (210) disposed at the lower part of the parachute canopy. The bracket (210) has a locking hole (211) for inserting the locking member (300). The drive assembly (400) can drive the locking member (300) to insert into the locking hole (211).

8. The parachute opening mechanism of the waterproof drone as described in claim 7, characterized in that: The hanger (210) has a U-shaped plate structure. The upper part of the horizontal section of the hanger (210) is detachably mounted on the lower part of the parachute canopy by fasteners. The locking hole (211) is a runway-shaped elongated hole. A top rod (220) is provided on the lower part of the horizontal section of the hanger (210). A fixing cylinder (230) is provided on the lower part of the top rod (220). An elastic element (240) is provided inside the fixing cylinder (230). The upper part of the elastic element (240) is located on the lower part of the top rod (220). The fixing cylinder (230) is located on the rear side of the partition (100).

9. The parachute opening mechanism of the waterproof drone as described in claim 3, characterized in that: The telescopic push rod can be any one of an electric push rod, a pneumatic push rod, or a hydraulic push rod.

10. The parachute opening mechanism of the waterproof drone as described in claim 8, characterized in that: The elastic element (240) is a compression spring or a tin bronze spring.

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