Parachute anti-inversion device and parachute
By designing an anti-tumble parachute device, the parachute lines and canopy are kept in a restrained and stored state before the parachute opens. By using the timing control of the transition sleeve and the snapping of the rope, the problem of the canopy flipping and tangling is solved, thus improving the reliability and safety of the parachute.
Patent Information
- Application Number
- CN202610402573.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-30
- Publication Date
- 2026-06-23
AI Technical Summary
Existing parachutes are prone to problems such as canopy flipping and tangling during deployment, leading to reduced deceleration performance and failure to stabilize the landing.
A parachute anti-tumble device was designed, including a parachute cord sleeve, a transition sleeve, and a canopy sleeve. Through structural design, the parachute cords and canopy are kept in a restrained and stored state before the parachute opens. The timing control of straightening the parachute cords before releasing the canopy is achieved by using the buckle loop, cord binding sleeve, and cord break on the transition sleeve, thus preventing the canopy from flipping and getting tangled.
It effectively prevents the parachute canopy from flipping and tangling, improves the reliability and safety of the parachute, and ensures that the parachute lines and canopy open in an orderly manner in complex airflow environments.
Smart Images
Figure CN122254072A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of parachute technology, specifically to a parachute anti-tumble device and a parachute. Background Technology
[0002] Parachutes, as mature and stable aerodynamic deceleration devices, have been widely used in the aerospace field due to their advantages such as foldable storage, small size, light weight, and convenient installation and connection. With the improvement of material performance and the continuous optimization of parachute deployment control programs, the applicable scenarios of parachutes have been further expanded to various harsh working conditions. Higher strength raw materials enable them to reliably deploy in high-speed airflow environments, avoiding large-area damage or structural damage to the canopy; a well-developed deployment program can effectively resist the impact of complex airflow and reduce the risk of overall failure during deceleration and stabilization.
[0003] Currently, during actual parachute deployment, the problem of parachute flipping is still difficult to completely avoid due to complex airflow disturbances. In mild cases, the entire canopy may flip over, leading to decreased deceleration performance, unstable descent attitude, and increased sway angle and amplitude. In severe cases, the canopy and parachute lines may become entangled, directly causing the deceleration and stabilization procedures to completely fail.
[0004] Therefore, there is currently a lack of anti-tipping devices for parachutes to prevent the canopy from flipping and getting tangled. Summary of the Invention
[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and to propose a parachute anti-tumble device and a parachute, thereby solving the technical problems of easy flipping and tangling of the parachute canopy in the prior art.
[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a parachute anti-tipping device, which includes a parachute cord sleeve, a transition sleeve, and a canopy sleeve. One end of the parachute cord sleeve is provided with a parachute cord loop connected to the parachute cords. One end of the transition sleeve is connected to the other end of the parachute cord sleeve, and a buckle loop and a cord binding loop are provided inside the transition sleeve. At least a portion of the parachute cords are constrained in the cord binding loop in a direction away from the parachute cord sleeve. One end of the canopy sleeve is connected to the other end of the transition sleeve, and the inner diameter of the canopy sleeve is larger than the inner diameter of the parachute cord sleeve. The canopy sleeve is used to cover the canopy. The parachute cords pass through the parachute cord sleeve, the transition sleeve, and the canopy sleeve in sequence. One end of the parachute cords is connected to the parachute cord loop, and the other end is connected to the bottom edge of the canopy. A snap rope is connected between the buckle loop and the bottom edge of the canopy. When the snap rope is straightened, the bottom edge of the canopy is located at the opening of the canopy sleeve away from the transition sleeve.
[0007] In some embodiments, the end of the paracord loop with the paracord loop is provided with a closing cord, which is connected to both the paracord loop and the paracord loop, and is used to close the opening of the paracord loop.
[0008] In some embodiments, the end of the paracord loop with the paracord loop is rolled outwards, and the rolled edge forms a cavity for accommodating the loop-shaped closure.
[0009] In some embodiments, the length L1 of the paracord loop and the inner diameter D1; the length La of the paracord and the diameter Da satisfy: 900mm≤La-L1≤1200mm; 1.5Da≤D1≤2Da.
[0010] In some embodiments, the inner diameter of the transition sleeve near the paracord sleeve is the same as the inner diameter of the paracord sleeve, and the inner diameter of the transition sleeve near the canopy sleeve is the same as the inner diameter of the canopy sleeve. The length L2 of the transition sleeve satisfies: 200mm≤L2≤300mm.
[0011] In some embodiments, the transition sleeve is provided with two buckles, which are symmetrical about the axis of the transition sleeve, and the pull cord passes through the two buckles respectively and connects to the bottom edge of the umbrella canopy.
[0012] In some embodiments, the breaking strength of the rope is 3-5 times the total weight of the paracord.
[0013] In some embodiments, the inner diameter of the umbrella cover is the same as the diameter of the bottom edge of the umbrella cover, the diameter of the bottom edge of the umbrella cover is the diameter of the umbrella cover in the folded state, and the length L3 of the umbrella cover satisfies: 300mm≤L3≤500mm.
[0014] In some embodiments, the paracord loops, transition loops, canopy covers, and buckle loops are all made of polyethylene fiber fabric.
[0015] Secondly, the present invention also provides a parachute that includes the above-described parachute anti-tumble device.
[0016] Compared with existing technologies, the present invention provides a parachute anti-tipping device. This device includes a parachute line sleeve for restraining and storing the parachute lines, a canopy sleeve for covering and restraining the bottom edge of the parachute canopy, and a transition sleeve for connecting the line sleeve and the canopy sleeve, reducing damage to the line sleeve caused by line tension during deployment. Through structural design, the parachute lines and the bottom edge of the canopy are always in a restrained and stored state before being fully straightened, avoiding interference from complex airflow. This also makes the parachute more orderly, facilitating subsequent packing and maintenance. Furthermore, the transition sleeve is equipped with a buckle, a line-binding sleeve, and a breakaway cord. When the parachute lines are partially restrained within the line-binding sleeve, the remaining lines are straightened, achieving sequential control of straightening the lines before releasing the canopy. This fundamentally prevents premature canopy flipping and inflation disorder, thereby avoiding canopy flipping and tangling, and improving the reliability and safety of the parachute operation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a parachute anti-tumble device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the parachute anti-tipping device and the parachute packaging provided in this embodiment of the invention; Figure 3 yes Figure 2 A sectional view in the direction of symmetry of the structural connection.
[0018] Explanation of reference numerals in the attached figures: 100. Parachute anti-tumble device; 110. Paracord loop; 111. Closure cord; 120. Transition loop; 121. Buckle loop; 122. Rope binding loop; 123. Rope breakage device; 130. Umbrella cover; 140. Umbrella canopy; 141. Umbrella canopy bottom edge; 150. Paracord; 160. Paracord loop. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0020] Parachutes, as technologically mature and stable aerodynamic deceleration devices, have been widely used in the aerospace field. Currently, during actual parachute deployment, complex airflow disturbances can cause technical problems such as canopy flipping and entanglement.
[0021] To address the technical problem of parachute canopies easily flipping and tangling, this invention provides a parachute anti-flipping device that can effectively prevent parachute canopies from flipping and tangling, thereby improving the reliability and safety of parachute operation.
[0022] It should be noted that the parachute anti-tumble device provided by the present invention is used in, but not limited to, aerospace parachutes, industrial and civilian parachutes, etc. For ease of explanation, this invention only uses the application of the parachute anti-tumble device in aerospace parachutes as an example for explanation. The principle of the parachute anti-tumble device applied to other types of parachutes is essentially the same as that applied to aerospace parachutes, and will not be described in detail here.
[0023] This invention provides a parachute anti-tumble device 100, such as... Figures 1 to 3As shown, the parachute anti-tumble device 100 includes a parachute line sleeve 110, a transition sleeve 120, and a canopy sleeve 130. One end of the parachute line sleeve 110 is provided with a parachute line loop 160 connected to the parachute line 150. One end of the transition sleeve 120 is connected to the other end of the parachute line sleeve 110. The inner side of the transition sleeve 120 is provided with a fastening loop 121 and a rope binding sleeve 122. At least a portion of the parachute line 150 is constrained within the rope binding sleeve 122 in a direction away from the parachute line sleeve 110. One end of the canopy sleeve 130 is connected to the other end of the transition sleeve 120. The inner diameter of the canopy cover 130 is larger than the inner diameter of the paracord cover 110. The canopy cover 130 is used to cover the canopy 140. The paracord 150 passes through the paracord cover 110, the transition cover 120 and the canopy cover 130 in sequence. One end of the paracord 150 is connected to the paracord loop 160 and the other end is connected to the bottom edge 141 of the canopy. A snap rope 123 is connected between the buckle 121 and the bottom edge 141 of the canopy. When the snap rope 123 is straightened, the bottom edge 141 of the canopy is located at the opening of the canopy cover 130 away from the transition cover 120.
[0024] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the parachute anti-tipping device 100 includes three functional areas: parachute cord sleeve 110, transition sleeve 120, and parachute canopy sleeve 130.
[0025] The parachute cord sleeve 110 is a hollow cylindrical structure. It is used to package and restrain the parachute cords 150, preventing tangling or the formation of a rope sail during parachute deployment. The parachute cords 150 pass through the sleeve 110 and connect to a cord loop 160 at one end of the sleeve. The dimensions and material of the sleeve 110 will be described later through specific embodiments.
[0026] The transition sleeve 120 is a flared, centrally located frustum structure. Inside the transition sleeve 120, there are a buckle 121 and a rope binding sleeve 122. The transition sleeve 120 is used to package and constrain the parachute ropes 150 at the base of the parachute canopy, ensuring that the parachute ropes 140 and 150 are not fully straightened before the ropes are wrapped in the rope binding sleeve 122, and fixing the bottom edge 141 of the parachute canopy to the opening of the transition sleeve 120, thereby reducing the damage to the rope binding sleeve 110 caused by the tension of the parachute ropes 150 when the parachute opens.
[0027] For example, a drawstring loop 122, with a width equal to half the circumference of the cylindrical cross-section of the parachute lines 150, is sewn parallel to the direction of the loop 121. The drawstring loop 122 ensures that the parachute lines 150 are not under stress before the parachute is straightened, and the excess portion of the parachute lines 150 at the bottom edge 141 of the parachute canopy can be restrained on the drawstring loop 120, resulting in neat and orderly packaging. The material of the drawstring loop 122 is not limited, as long as it meets the strength and quality requirements. For example, the drawstring loop 122 can be made of lightweight thin cotton fabric with a certain degree of friction.
[0028] For example, a portion of the parachute ropes 150 at the bottom edge 141 of the parachute canopy enters the drawstring loop 122 of the transition sleeve 120 in the direction of pulling out the parachute anti-tumble device 100. If the direction is reversed, the drawstring loop 122 will be torn, causing damage to the transition sleeve 120 of the parachute anti-tumble device 100.
[0029] The parachute canopy 130 is a hollow cylindrical structure. The parachute canopy 130 is used to package and constrain the bottom edge 141 of the parachute canopy. Before the parachute canopy 140 and parachute lines 150 are straightened, the inflation channel of the parachute canopy 140 is blocked to prevent the bottom edge 141 of the parachute canopy from inflating prematurely. This ensures that the parachute canopy 140 and parachute lines 150 can be straightened in an orderly manner under various complex airflow conditions before inflation begins.
[0030] For example, a snap rope 123 is connected between the buckle 121 and the bottom edge 141 of the canopy; when the snap rope is straightened, the bottom edge 141 of the canopy is located at the opening of the canopy cover 130 away from the transition cover 120. The breaking strength of the snap rope 123 is 3-5 times the total weight of the parachute lines 150, which ensures that the canopy 140 and the parachute lines 150 are still under the packaging constraints of the parachute anti-tumble device 100 before the parachute is straightened, and the parachute will not inflate prematurely; it also ensures that after the parachute is straightened, the parachute will break the snap rope 123 under a small top traction force or under the action of airflow disturbance. The snap rope 123 is replaced after each use.
[0031] To better understand this invention, the principles of this invention will now be explained. For example... Figures 1 to 3 As shown.
[0032] Specifically, the paracord 150 passes through the paracord loop 110, the transition loop 120 and the canopy loop 130 in sequence. One end of the paracord 150 is connected to the paracord loop 160 and the other end is connected to the bottom edge of the canopy loop 141. The canopy loop 140 is completely covered inside the canopy loop 130. The pull cord 123 passes through the buckle loop 121 and is connected to the bottom edge of the canopy loop 141.
[0033] The total length La of the parachute lines 150 is greater than the sum of the lengths of the parachute line sleeve 110, the transition sleeve 120, and the canopy sleeve 130, i.e., La > L1 + L2 + L3. Part of the parachute lines 150 is constrained within the cord binding sleeve 122. During the opening process, under a small top traction force or airflow disturbance, the canopy 140 will move towards the end of the canopy sleeve 130 away from the transition sleeve 120, causing the bottom edge 141 of the canopy to move to the end of the transition sleeve 120. At this time, the break cord 123 is tightened, and the parachute lines 150 are basically in a straight state, with only a portion of their length still constrained within the cord binding sleeve 122. The system enters a critical state. Before the pull cord 123 breaks, the parachute canopy is still inside the canopy cover 130, and the bottom edge 141 of the canopy cannot be inflated. When the pull cord 123 is broken, the parachute rope segment restrained in the rope cover 122 is instantly released from restraint under the action of tension, and the parachute anti-tumble device 100 immediately detaches from the bottom edge 141 of the canopy, and the parachute begins to inflate normally.
[0034] It should be noted that since the main body of the parachute lines 150 is pre-stretched, only a portion of the lines are constrained. Due to the limited length of the constrained portion, the release speed is fast and the release time is short. This can be understood as the entire parachute line 150 being instantly stretched to its full length before inflation, thus preventing the parachute line 150 from tangling. Therefore, this ensures that the parachute can open in an orderly manner—first fully stretching and then inflating—in various airflow environments, fundamentally preventing parachute inversion problems caused by premature inflation of the canopy's bottom edge in complex airflow conditions.
[0035] In this embodiment, the parachute anti-tipping device 100 includes a parachute line sleeve 110 for restraining and storing the parachute lines 150, a canopy sleeve 130 for covering and restraining the bottom edge 141 of the parachute canopy, and a transition sleeve 120 for connecting the parachute line sleeve 110 and the canopy sleeve 130 and reducing the damage to the parachute line sleeve 110 caused by the tension of the parachute lines 150 during the opening process. Through structural design, the parachute lines 150 and the bottom edge 141 of the canopy can always be in a state of overall restraint and storage before being fully straightened, avoiding interference from complex airflow, while making the parachute more regular in shape, facilitating subsequent parachute wrapping and tidying operations. Furthermore, the transition sleeve 120 is equipped with a buckle 121, a cord loop 122, and a break cord 123. When the parachute cord 150 is partially bound within the cord loop 122, the remaining parachute cords are in a taut state. This achieves timing control of first tautting the parachute cords and then releasing the parachute canopy, preventing the parachute canopy 140 from flipping prematurely or becoming disordered during inflation. This prevents the parachute canopy 140 from flipping and tangling, thereby improving the reliability and safety of the parachute operation.
[0036] In some embodiments, such as Figure 2 and Figure 3 As shown, the paracord sleeve 110 has a paracord loop 160 at one end, and a closing rope 111 is provided at the other end. The closing rope 111 is connected to the paracord sleeve 110 and the paracord loop 160 respectively, and the closing rope 111 is used to close the opening of the paracord sleeve 110.
[0037] In this embodiment, a drawstring 111 is sewn onto the opening of the paracord loop 110 at one end of the paracord ring 160. The drawstring 111 closes the opening of the paracord loop 110 and fixes it to the paracord ring 160, forming a stable constraint end at the lower end of the paracord loop 110. When the drawstring 111 is tightened, it can close the opening of the paracord loop 110, thereby preventing air from inflating through the opening of the paracord loop 110 and further avoiding the risk of the canopy 140 and the paracord 150 becoming entangled. The material of the drawstring 111 is not limited, as long as it meets the strength and quality requirements. For example, the drawstring 111 is made of cotton rope with high breaking strength, light weight, and a certain degree of friction.
[0038] In some embodiments, the end of the paracord loop 110 with the paracord loop 160 is rolled outwards, and the rolled edge forms an annular cavity for accommodating the drawstring 111.
[0039] In this embodiment, the parachute cord sleeve 110 is sewn with an outward-curled edge, which reduces obstruction to the internal channel and facilitates smooth sliding of the parachute cord 150 within the sleeve 110. The drawstring 111 is located in the cavity formed by the outer rolled edge, used to tighten and seal the opening of the parachute cord sleeve 110. The transition sleeve 120, like the canopy sleeve 130, can also be sewn with an outward-curled edge, further reducing internal channel resistance and making the overall shape of the parachute anti-tumble device 100 more regular and the sewing process simpler.
[0040] In some embodiments, such as Figure 1 and Figure 2 As shown, the length L1 and inner diameter D1 of paracord loop 110; the length La and diameter Da of paracord 150, satisfying: 900mm≤La-L1≤1200mm; 1.5Da≤D1≤2Da.
[0041] In this embodiment, the length L1 of the parachute cord sleeve 110 is 900mm-1200mm shorter than the length La of the parachute cord 150. Specifically, La-L1 can be 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1050mm, 1100mm, 1150mm, or 1200mm, or any value between any two adjacent values mentioned above. By limiting the difference between the length of the parachute cord sleeve 110 and the length of the parachute cord 150 to 900mm-1200mm, it can be ensured that when the parachute canopy 140 and the parachute cord 150 are fully taut, the entire parachute anti-tipping device 100 is completely separated from the bottom edge 141 of the canopy, ensuring normal parachute inflation.
[0042] In this embodiment, the inner diameter D1 of the parachute cord sleeve 110 is 1.5-2 times the diameter Da of the parachute cord 150. Specifically, D1 can be 1.6Da, 1.7Da, 1.8Da, 1.9Da, 2Da, or any value between two adjacent values mentioned above. By controlling the inner diameter of the parachute cord sleeve 110 and the diameter of the parachute cord 150 within this ratio range, the parachute cord 150 can be neatly arranged and easily packaged during storage, effectively avoiding cord-sail phenomena. It also ensures that the parachute cord 150 can be smoothly pulled out along the opening direction of the parachute cord sleeve 110 during parachute opening, while preventing the parachute cord from swaying or tangling due to excessive gaps.
[0043] In some embodiments, such as Figure 1 and Figure 2 As shown, the inner diameter of the transition sleeve 120 near the paracord sleeve 110 is the same as the inner diameter of the paracord sleeve 110, and the inner diameter of the transition sleeve 120 near the canopy sleeve 130 is the same as the inner diameter of the canopy sleeve 130. The length L2 of the transition sleeve 120 satisfies: 200mm≤L2≤300mm.
[0044] In this embodiment, the transition sleeve 120 is a flared, centrally shaped frustum structure. In the direction of gravity, the end of the transition sleeve 120 closest to the paracord sleeve 110 is the lower end, and the end closest to the canopy sleeve 130 is the upper end. The inner diameter of the lower opening of the transition sleeve 120 closest to the paracord sleeve 110 is the same as the inner diameter of the paracord sleeve 110, and the inner diameter of the upper opening of the transition sleeve 120 closest to the canopy sleeve 130 is the same as the inner diameter of the canopy sleeve 130. The length L2 of the transition sleeve 120 can be understood as its height. Specifically, the length L2 can be 200mm, 220mm, 250mm, 280mm, 300mm, or any value between two adjacent values mentioned above. By using a flared, centrally shaped frustum structure for the transition sleeve 120, with its inner diameters at both ends matching those of the paracord sleeve 110 and the canopy sleeve 130 respectively, a smooth transition in inner diameter is achieved, effectively avoiding stress concentration and jamming of the paracord 150. Furthermore, this structure can reduce the impact and mechanical damage of the parachute rope tension on the parachute rope sleeve 110 during the deployment of the parachute rope 150, making the structural connection smoother and reducing airflow interference and motion resistance during parachute opening. At the same time, the length of the transition sleeve 120 is reasonably set, which can provide sufficient installation space for the buckle loop 121 and the rope sleeve 122, ensuring that a section of parachute rope at the bottom edge 141 of the canopy can be reliably constrained before the parachute is fully straightened.
[0045] In some embodiments, such as Figure 2 and Figure 3 As shown, the transition sleeve 120 is provided with two buckle loops 121. The two buckle loops 121 are symmetrical about the axis of the transition sleeve 120. The pull rope 123 passes through the two buckle loops 121 respectively and connects to the bottom edge 141 of the umbrella canopy.
[0046] In this embodiment, two loops 121 are symmetrically sewn onto the transition sleeve 120, passing through the paracord loops 110. After the break cord 123 passes through the two symmetrically arranged loops 121, it is tied and tightened to the roots of the two outermost paracord bundles on the bottom edge 141 of the parachute canopy. For example, for a parachute equipped with a secondary opening device, the break cord 123 can be directly connected to the secondary opening pull cord; for example, for a parachute without a secondary opening device, corresponding loops can be added to the roots of the two outermost paracords in the packaging for connection, so as to ensure uniform stress distribution.
[0047] In this embodiment, the material of the buckle 121 is not limited, as long as it meets the strength and quality requirements. For example, the buckle 121 is made of polyethylene tape with high breaking strength and light weight. Through the structural design of symmetrical double buckles combined with a single break rope 123, the break rope 123 can be subjected to balanced force during operation, ensuring accurate, stable and reliable release of the canopy.
[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, the inner diameter of the umbrella cover 130 is the same as the diameter of the bottom edge 141 of the umbrella cover. The diameter of the bottom edge 141 of the umbrella cover is the diameter of the umbrella cover 140 in the folded state. The length L3 of the umbrella cover 130 satisfies: 300mm≤L3≤500mm.
[0049] In this embodiment, the canopy cover 130 is a cylindrical hollow structure, and its inner diameter matches the outer diameter of the canopy bottom edge 141. The length L3 of the canopy cover 130 can be 300mm, 320mm, 350mm, 380mm, 400mm, 420mm, 450mm, 480mm, 500mm, or any value between any two adjacent values mentioned above. Before the breakage cord 123 is broken, the canopy cover 130 can completely constrain the parachute lines 150 and the canopy bottom edge 141, preventing the canopy bottom edge 141 from inflating prematurely before the parachute is fully extended; after the breakage cord 123 breaks, a safe distance of approximately 400mm can be formed between the end of the canopy cover 130 and the canopy bottom edge 141, providing sufficient space for the parachute to inflate smoothly and fully.
[0050] In some embodiments, the paracord sleeve 110, transition sleeve 120, canopy sleeve 130, and buckle 121 are all made of polyethylene fiber fabric.
[0051] In this embodiment, the parachute cord sheath 110, transition sheath 120, and canopy sheath 130 are made of lightweight, smooth, and high-strength polyethylene silk; the drawstring 111 is made of ordinary cotton rope; the buckle loop 121 is made of polyethylene ribbon; and the cord sheath 122 is made of thin cotton cloth. The polyethylene fiber fabric is lightweight, does not add extra weight to the parachute, and possesses high strength and abrasion resistance. Its smooth surface ensures smooth cord extraction and effectively reduces wear.
[0052] To better understand this invention, the following is combined with... Figures 1 to 3 The technical solution of the present invention will be described in detail below: In some embodiments, the parachute anti-tipping device 100 includes a parachute rope sleeve 110, a transition sleeve 120, and a parachute canopy sleeve 130 connected in sequence.
[0053] The parachute cord sleeve 110 has a hollow cylindrical structure. One end of the sleeve is sewn with a drawstring 111, which connects to both the sleeve and the cord loop 160. The drawstring 111 seals the opening of the sleeve and prevents air from entering during inflation. The length L1 of the sleeve is 900mm-1200mm shorter than the length La of the parachute cords 150. This ensures that when the parachute canopy 140 and cords 150 are fully extended, the entire anti-tumble device 100 is completely separated from the bottom edge 141 of the canopy, guaranteeing proper parachute inflation. The inner diameter D1 of the sleeve is 1.5-2 times the diameter Da of the cords 150. This design effectively prevents the cord-sail phenomenon and ensures that the cords 150 are smoothly pulled out along the opening direction of the sleeve.
[0054] The transition sleeve 120 is a flared, centrally located frustum structure. The inner diameter of the transition sleeve 120 near the paracord sleeve 110 is the same as the inner diameter of the paracord sleeve 110, and the inner diameter of the transition sleeve 120 near the canopy sleeve 130 is the same as the inner diameter of the canopy sleeve 130. The length L2 of the transition sleeve 120 is between 200mm and 300mm. Two loops 121 and one cord binding sleeve 122 are provided inside the transition sleeve 120. The two loops 121 are symmetrical about the axis of the transition sleeve 120. The broken cord 123 passes through the two loops 121 and connects to the bottom edge 141 of the canopy. Part of the paracord 150 is bound in the cord binding sleeve 122 of the transition sleeve 120.
[0055] The umbrella cover 130 is a hollow cylindrical structure. The inner diameter of the umbrella cover 130 is the same as the diameter of the bottom edge 141 of the umbrella cover. The diameter of the bottom edge 141 of the umbrella cover is the diameter of the umbrella cover 140 when it is folded. The length L3 of the umbrella cover 130 is between 300mm and 500mm.
[0056] The paracord sleeve 110, transition sleeve 120, and umbrella canopy sleeve 130 are all made of lightweight, smooth, and high-strength polyethylene silk. During sewing, the rolled edges of the paracord sleeve 110, transition sleeve 120, and umbrella canopy sleeve 130 face outwards to reduce obstruction of the internal channels. The drawstring 111 is made of ordinary cotton rope; the buckle loop 121 is made of polyethylene ribbon; and the drawstring sleeve 122 is made of thin cotton fabric.
[0057] This invention also provides a parachute, which includes the parachute anti-tumble device 100 described above.
[0058] In this embodiment, the parachute includes a parachute anti-tumble device 100. The parachute anti-tumble device 100 can constrain the parachute lines 150 and the bottom edge 141 of the canopy as a whole, and cooperate with the timing control of the pull-off line 123 to straighten the parachute lines 150 first and then inflate and deploy, effectively preventing the parachute from flipping and tangling, and improving the reliability and safety of the parachute.
[0059] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A parachute anti-tumble device, characterized in that, include: A paracord loop, one end of which is provided with a paracord loop connected to the paracord; A transition sleeve, one end of which is connected to the other end of the paracord sleeve, and a buckle and a cord binding sleeve are provided inside the transition sleeve, with at least a portion of the paracords being bound inside the cord binding sleeve in a direction away from the paracord sleeve. The umbrella canopy cover has one end connected to the other end of the transition sleeve. The inner diameter of the umbrella canopy cover is larger than the inner diameter of the parachute rope sleeve. The umbrella canopy cover is used to cover the umbrella canopy. The paracords pass sequentially through the paracord loop, the transition loop, and the canopy loop. One end of the paracord is connected to the paracord loop, and the other end is connected to the bottom edge of the canopy. A snap rope is connected between the buckle and the bottom edge of the canopy. When the snap rope is straightened, the bottom edge of the canopy is located at the opening of the canopy loop away from the transition loop.
2. The parachute anti-tumble device according to claim 1, characterized in that, The paracord loop has a drawstring at one end, which is connected to both the paracord loop and the paracord loop. The drawstring is used to close the opening of the paracord loop.
3. The parachute anti-tumble device according to claim 2, characterized in that, The end of the paracord loop with the paracord loop is rolled outwards, and the rolled edge forms a cavity for accommodating the loop-shaped closure.
4. The parachute anti-tumble device according to claim 2, characterized in that, The length L1 and inner diameter D1 of the paracord sleeve; the length La and diameter Da of the paracord satisfy: 900mm≤La-L1≤1200mm; 1.5Da≤D1≤2Da.
5. The parachute anti-tumble device according to claim 1, characterized in that, The inner diameter of the transition sleeve near the end of the paracord sleeve is the same as the inner diameter of the paracord sleeve, and the inner diameter of the transition sleeve near the end of the umbrella canopy sleeve is the same as the inner diameter of the umbrella canopy sleeve. The length L2 of the transition sleeve satisfies: 200mm≤L2≤300mm.
6. The parachute anti-tumble device according to claim 5, characterized in that, The transition sleeve is provided with two buckle loops, which are symmetrical about the axis of the transition sleeve. The pull cord passes through the two buckle loops and connects to the bottom edge of the umbrella canopy.
7. The parachute anti-tumble device according to claim 1, characterized in that, The breaking strength of the rope is 3-5 times the total weight of the paracord.
8. The parachute anti-tumble device according to claim 1, characterized in that, The inner diameter of the umbrella cover is the same as the bottom diameter of the umbrella cover, the bottom diameter of the umbrella cover is the diameter of the umbrella cover in the folded state, and the length L3 of the umbrella cover satisfies: 300mm≤L3≤500mm.
9. The parachute anti-tumble device according to claim 1, characterized in that, The paracord sleeve, the transition sleeve, the umbrella canopy sleeve, and the buckle loop are all made of polyethylene fiber fabric.
10. A parachute, characterized in that, Includes the parachute anti-tumble device as described in any one of claims 1-9.