Parachute pack

Abstract

The invention discloses a parachute pack. The parachute pack comprises base cloth, the side panel comprises outer cloth, inner cloth and a cylinder, the cylinder is connected to the base cloth, and the cylinder is connected between the outer cloth and the inner cloth to form a rigid supporting structure of the side panel; the blades are connected to one side, far away from the base cloth, of the cylinder; the parachute bag has the beneficial effects that the cylinders in the side panels form reliable rigid support, radial extrusion force generated when the binding belts are tightened can be effectively resisted, the transverse section of the parachute bag is prevented from shrinking, the axial height of the parachute bag is prevented from being increased abnormally, and the situation that the axial height of the parachute bag exceeds the preset height of a parachute cabin body is avoided.

Description

Technical Field

[0001] This invention relates to the field of parachute applications, and more specifically to a parachute pack. Background Technology

[0002] The buoy parachute system is a crucial safety component during buoy deployment. Its function is to ensure the buoy's smooth descent after detachment from the carrier aircraft, guaranteeing its accurate arrival at the designated operational area. The assembly process involves first loading the parachute into a pack and sealing it, then placing the sealed parachute pack into the canopy. Finally, securing the parachute pack within the canopy using restraint straps and tightening ropes prevents it from falling off due to turbulence and vibration during buoy flight from the carrier aircraft, ensuring system stability and deployment safety.

[0003] In existing assembly processes, when the restraint straps are tightened using the drawstring, the restraint straps exert radial compressive force on the parachute pack. Since the parachute pack is made of flexible fabric, this compressive force forces a reduction in its lateral cross-sectional area. With the overall volume of the parachute pack remaining essentially unchanged, this lateral shrinkage leads to a corresponding increase in the axial height of the parachute pack. This deformation causes the axial height of the parachute pack to exceed the preset assembly height of the parachute compartment, resulting in difficulties in smoothly assembling the parachute compartment cover and the compartment itself, thus affecting the assembly efficiency of the buoy parachute system. To solve the parachute pack deformation problem during the assembly process, this application proposes a novel parachute pack. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a parachute pack that solves the technical problem of difficulty in loading the parachute pack due to abnormal deformation in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention provides a parachute pack, including a base fabric;

[0006] The side panel includes an outer fabric, an inner fabric, and a cylinder, the cylinder being connected to the bottom fabric and the outer fabric being connected to the inner fabric, forming a rigid support structure for the side panel; A blade, connected to the side of the cylinder away from the base fabric; and, A sealing buckle is attached to the blade.

[0007] In some embodiments, the cylinder includes a support, a bottom rod, side rods, a sleeve, an adjustment mechanism, and a fixing mechanism. A plurality of bottom rods are arranged around the support, and the bottom rods are slidably connected to the support radially. The fixed end of the adjustment mechanism is connected to the support, and the movable end of the adjustment mechanism is connected to the bottom rods. A plurality of side rods are respectively connected to a plurality of bottom rods. The sleeve is fitted onto the side rods. The inner fabric slidably passes through the inner side of the plurality of sleeves, and the outer fabric slidably passes through the outer side of the plurality of sleeves. The fixing mechanism is used to fix the ends of the outer and inner fabrics. The bottom fabric is detachably connected to the side panel.

[0008] In some embodiments, the cylinder further includes a lifting ring connected to the sleeve, the outer fabric passing through the lifting ring located inside the sleeve, and the inner fabric passing through the lifting ring located outside the sleeve.

[0009] In some embodiments, the adjusting mechanism includes a wedge, a support cylinder, and a power assembly. A plurality of support cylinders are arranged in a ring around the support. A plurality of bottom rods are slidably inserted through the plurality of support cylinders. The wedge is slidably connected to the support along the axial direction of the support. The end of the bottom rod is slidably connected to the wedge surface of the wedge. The wedge has a groove for the bottom rod to slide. The fixed end of the power assembly is connected to the support, and the movable end of the power assembly is connected to the wedge. The power assembly is used to drive the wedge to reciprocate, so that the plurality of bottom rods move closer together or further apart.

[0010] In some embodiments, the power assembly includes a guide rod and a lead screw, the guide rod being connected to a support and extending axially along the support, the wedge being slidably connected to the guide rod, the lead screw being rotatably connected to the support, and the lead screw passing through the wedge and being threadedly connected to the wedge.

[0011] In some embodiments, the power assembly further includes a handle connected to a lead screw.

[0012] In some embodiments, the fixing mechanism includes a plug, a socket, and a plug rod, with a plurality of plug rods spaced apart from the plug along the length of the plug, the socket having a slot for receiving the plug rod, and both the outer and inner fabrics having holes for the plug rod to pass through.

[0013] In some embodiments, the fixing mechanism further includes a ball head connected to the end of the plug rod, the ball head being located on one end of the plug rod near the socket.

[0014] In some embodiments, the fixing mechanism further includes a spring, one end of which is connected to the plug and the other end of which is connected to the socket. The spring is in a stretched state, and the spring causes the plug and the socket to tend to move closer together.

[0015] In some embodiments, multiple sealing buckles are provided, and the multiple sealing buckles are distributed at intervals along the circumference of the blade for the parachute lines to pass through in order to complete the sealing and fixing of the parachute.

[0016] Compared with the prior art, the beneficial effects of the present invention include: The cylindrical structure inside the side panel forms a reliable rigid support, which can effectively resist the radial extrusion force generated when the restraint straps are tightened, prevent the lateral section of the parachute from shrinking and the axial height from increasing abnormally, and avoid the axial height of the parachute from exceeding the preset height of the parachute compartment. Because the parachute pack can maintain its pre-designed shape under the restraint straps, its axial height is precisely matched with the preset assembly height of the parachute compartment, ensuring that the parachute compartment cover and the parachute compartment body can be assembled smoothly, solving the assembly jamming problem caused by parachute pack deformation in the original process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the parachute compartment provided by the present invention; Figure 2 This is a schematic diagram of the overall structure of the umbrella bag provided by the present invention; Figure 3 This is a schematic diagram of the overall structure of the side panel provided by the present invention; Figure 4 This is a schematic diagram of the overall structure of the cylinder provided by the present invention; Figure 5 This is a cross-sectional view of the overall structure of the cylinder provided by the present invention; Figure 6 This is a cross-sectional view of the overall structure of the fixing mechanism provided by the present invention; Figure 7 This is a schematic diagram of the overall structure of the outer and inner fabrics provided by the present invention; Explanation of reference numerals in the attached figures: 1. Base fabric; 2. Side fabric; 3. Outer fabric; 4. Inner fabric; 5. Cylinder; 51. Support; 52. Base rod; 53. Side rod; 54. Sleeve; 55. Adjustment mechanism; 551. Wedge; 552. Support cylinder; 553. Power assembly; 5531. Guide rod; 5532. Lead screw; 5533. Handle; 554. Wedge surface; 555. Slide groove; 56. Fixing mechanism; 561. Plug; 562. Socket; 563. Insert rod; 564. Slot; 565. Socket hole; 566. Ball head; 567. Spring; 57. Lifting ring; 6. Blade; 7. Sealing buckle; 8. Hull; 9. Hatch cover. Detailed Implementation

[0018] 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.

[0019] This invention provides a parachute pack, the structure of which is as follows: Figure 1 - Figure 7 As shown, it includes the base fabric 1; Side panel 2 includes outer fabric 3, inner fabric 4 and cylinder 5. The cylinder 5 is connected to the bottom fabric 1 and is connected between the outer fabric 3 and the inner fabric 4 to form a rigid support structure for the side panel 2. Blade 6 is connected to the side of the cylinder 5 away from the bottom fabric 1; and, The sealing buckle 7 is connected to the blade 6.

[0020] In use, the rigid cylinder 5 is first fixedly connected between the outer fabric 3 and the inner fabric 4 to form a side panel 2 with rigid support capacity; then the bottom end of the side panel 2 is connected to the bottom fabric 1, and the top end of the side panel 2 is connected to the blade 6 to complete the assembly of the main structure of the parachute pack. The bottom fabric 1, the side panel 2 and the blade 6 together form a cavity for accommodating the parachute; then the parachute is put into the cavity and the parachute rope passing through the sealing buckle 7 on the blade 6 is used to tighten and seal it, so that the parachute is stably placed in the cavity of the parachute pack.

[0021] The sealed parachute is placed inside the buoy parachute compartment 8, and then the restraint straps are wrapped around the outside of the parachute pack side panel 2. The restraint straps are tightened with the drawstring to secure the parachute pack inside the compartment 8. During this tightening process, the restraint straps exert radial compressive force on the parachute pack side panel 2. Since the cylinder 5 between the outer fabric 3 and the inner fabric 4 in the side panel 2 forms a rigid support structure, this rigid structure can directly resist the radial compressive force, prevent the side panel 2 from shrinking and deforming, and thus avoid a reduction in the transverse cross-sectional area of ​​the parachute pack.

[0022] Under the support of the rigid cylinder 5, the overall shape of the parachute remains stable and will not cause an abnormal increase in axial height due to the shrinkage of the lateral section. This ensures that the axial height of the parachute is always controlled within the preset assembly height range of the parachute compartment 8, ultimately ensuring that the parachute compartment cover 9 and the parachute compartment 8 can be smoothly connected and assembled.

[0023] In this invention, the cylinder 5 inside the side panel 2 forms a reliable rigid support, which can effectively resist the radial extrusion force generated when the restraint strap is tightened, prevent the lateral cross section of the parachute from shrinking and the axial height from increasing abnormally, and avoid the situation where the axial height of the parachute exceeds the preset height of the parachute compartment 8.

[0024] Because the parachute pack can maintain its pre-designed shape under the restraint straps, its axial height is precisely matched with the preset assembly height of the parachute compartment 8, ensuring that the parachute compartment cover 9 and the parachute compartment 8 can be assembled smoothly, solving the assembly jamming problem caused by parachute pack deformation in the original process.

[0025] To adjust the size of the parachute, please refer to... Figure 3In a preferred embodiment, the cylinder 5 includes a support 51, a bottom rod 52, side rods 53, a sleeve 54, an adjusting mechanism 55, and a fixing mechanism 56. Multiple bottom rods 52 are arranged around the support 51 and are slidably connected to the support 51 radially. The fixed end of the adjusting mechanism 55 is connected to the support 51, and the movable end of the adjusting mechanism 55 is connected to the bottom rods 52. Multiple side rods 53 are respectively connected to multiple bottom rods 52. The sleeve 54 is sleeved on the side rods 53. The inner fabric 4 is slidably inserted through the inner side of multiple sleeves 54, and the outer fabric 3 is slidably inserted through the outer side of multiple sleeves 54. The fixing mechanism 56 is used to fix the ends of the outer fabric 3 and the inner fabric 4. The bottom fabric 1 is detachably connected to the side panel 2.

[0026] During use, according to the size requirements of the parachute compartment 8 of the parachute to be packaged, the adjustment mechanism 55 is driven to operate. The movable end of the adjustment mechanism 55 pushes or pulls the base rod 52 to slide radially along the support 51. The base rod 52 drives the side rods 53 to move radially synchronously, thereby adjusting the diameter of the annular contour formed by the multiple side rods 53. During this process, the inner fabric 4 is slid through the inner side of the multiple sleeves 54, and the outer fabric 3 is slid through the outer side of the multiple sleeves 54. Utilizing the guiding effect of the sleeves 54 on the inner and outer fabrics 3, the inner and outer fabrics 3 expand and contract synchronously with the radial movement of the side rods 53, always fitting the side rods 53 to form a complete side panel 2. After the size is adjusted to the correct position, the ends of the outer fabric 3 and the inner fabric 4 are fixed by the fixing mechanism 56, completing the assembly of the side panel 2. The bottom fabric 1 and the bottom of the side panel 2 are detachably connected, so that the bottom fabric 1 and the side panel 2 together enclose a parachute housing cavity of the appropriate size, completing the pre-assembly of the main structure of the parachute pack.

[0027] To reduce the possibility of misalignment between outer fabric 3 and inner fabric 4 during adjustment, please refer to... Figure 4 In a preferred embodiment, the cylinder 5 further includes a lifting ring 57 connected to the sleeve 54, the outer fabric 3 passing through the lifting ring 57 located inside the sleeve 54, and the inner fabric 4 passing through the lifting ring 57 located outside the sleeve 54.

[0028] When in use, after the lifting ring 57 is fixedly connected to the sleeve 54, it forms a precise guide channel for the inner and outer fabrics 3: the outer fabric 3 passes through the lifting ring 57 on the inner side of the sleeve 54, and the inner fabric 4 passes through the lifting ring 57 on the outer side of the sleeve 54. The ring structure of the lifting ring 57 can limit the sliding trajectory of the inner and outer fabrics 3, ensuring that the inner and outer fabrics 3 always fit the surface of the sleeve 54 and will not have circumferential displacement or local wrinkles due to radial adjustment of the side panel 2, umbrella bag sealing, or compression by the restraint strap.

[0029] To drive the base rod 52 to move, please refer to... Figure 5In a preferred embodiment, the adjusting mechanism 55 includes a wedge 551, a support cylinder 552, and a power assembly 553. Multiple support cylinders 552 are arranged around the support 51, and multiple bottom rods 52 are slidably inserted through the multiple support cylinders 552. The wedge 551 is slidably connected to the support 51 along the axial direction of the support 51. The end of each bottom rod 52 is slidably connected to the wedge surface 554 of the wedge 551. The wedge 551 has a groove 555 for sliding the bottom rods 52. The fixed end of the power assembly 553 is connected to the support 51, and the movable end of the power assembly 553 is connected to the wedge 551. The power assembly 553 is used to drive the wedge 551 to reciprocate, so that the multiple bottom rods 52 move closer or further apart.

[0030] In use, according to the size requirements of the parachute or parachute housing 8 to be packaged, the power assembly 553 is activated, driving its movable end to push the wedge 551 to slide along the axial direction of the support 51 towards the bottom fabric 1. When the wedge 551 slides axially, its wedge surface 554 generates a radial thrust on the end of the bottom rod 52 through the sliding groove 555. Since the bottom rod 52 is restricted by the support cylinder 552 to slide only radially, under the action of this thrust, each bottom rod 52 slides synchronously along the support cylinder 552 away from the center of the support 51. The radial expansion of the bottom rod 52 drives the side rods 53 and the sleeve 54 to move outward synchronously. The diameter of the annular contour formed by multiple side rods 53 increases, and the lateral dimension of the side panel 2 expands accordingly. During this process, the inner and outer fabrics 3 expand synchronously through the sliding cooperation of the hanging ring 57 and the sleeve 54. The hanging ring 57 provides precise guidance for the fabric, avoiding wrinkles or jamming, and ensuring that the side panel 2 always maintains a complete annular contour. After the size expansion is in place, the power assembly 553 stops operating and locks the position of the wedge 551, completing the expansion adjustment. When a smaller parachute needs to be adapted, the power unit 553 can be reversed.

[0031] To drive wedge 551 to move, please refer to... Figure 5 In a preferred embodiment, the power assembly 553 includes a guide rod 5531 and a lead screw 5532. The guide rod 5531 is connected to the support 51 and extends axially along the support 51. The wedge block 551 is slidably connected to the guide rod 5531, and the lead screw 5532 is rotatably connected to the support 51. The lead screw 5532 passes through the wedge block 551 and is threadedly connected to the wedge block 551.

[0032] In use, when it is necessary to increase the lateral dimension of the side panel 2, the lead screw 5532 is rotated. Since the circumferential rotational freedom of the wedge block 551 is restricted by the guide rod 5531, the rotational motion of the lead screw 5532 is converted into the linear sliding of the wedge block 551 along the axial direction of the guide rod 5531 through thread engagement. When the wedge block 551 slides axially, its wedge surface 554 generates a continuous radial thrust on the end of the bottom rod 52 through the groove 555. Under the action of this thrust, the bottom rod 52 slides radially away from the center of the support 51 along the support cylinder 552, simultaneously driving the side rod 53 and the sleeve 54 to expand outward. Multiple side rods 53 expand radially synchronously, increasing the diameter of the annular profile of side panel 2 to accommodate the storage needs of large-sized parachutes. During this process, the outer fabric 3 slides and unfolds along the outer ring 57 of the sleeve 54, and the inner fabric 4 slides and unfolds along the inner ring 57 of the sleeve 54. The guiding function of the ring 57 prevents the fabric from wrinkling or getting stuck, ensuring that the side panel 2 has a regular shape after expansion. When the size of side panel 2 is adjusted to the target value, the rotation of the lead screw 5532 is stopped. The threaded engagement structure of the lead screw 5532 has a self-locking characteristic, which can prevent the wedge block 551 from sliding axially due to external force, achieving precise locking of the base rod 52 position. When it is necessary to reduce the lateral dimension of side panel 2, simply rotate the lead screw 5532 in the opposite direction.

[0033] For easier rotation of lead screw 5532, please refer to... Figure 5 In a preferred embodiment, the power assembly 553 further includes a handle 5533, which is connected to the lead screw 5532.

[0034] When in use, the addition of handle 5533 eliminates the need for electric drive components such as motors and batteries to rotate lead screw 5532. Operators can directly drive lead screw 5532 to rotate by rotating handle 5533, thereby completing the expansion or contraction adjustment of side panel 2.

[0035] To secure the outer fabric 3 to the inner fabric 4, please refer to... Figure 4 In a preferred embodiment, the fixing mechanism 56 includes a plug 561, a socket 562, and a plug rod 563. A plurality of plug rods 563 are spaced apart from the plug 561 along the length direction of the plug 561. The socket 562 is provided with a slot 564 for accommodating the plug rod 563. Both the outer fabric 3 and the inner fabric 4 are provided with a insertion hole 565 for the plug rod 563 to pass through.

[0036] In use, the lateral dimension of the side panel 2 is adjusted by the lead screw 5532, handle 5533, and adjustment mechanism 55, so that the outer fabric 3 is stretched or gathered to the target state along the outer hanging ring 57 of the sleeve 54, and the inner fabric 4 is stretched or gathered to the corresponding state along the inner hanging ring 57 of the sleeve 54. At this time, the ends of the outer fabric 3 and the inner fabric 4 are aligned with each other, and the insertion holes 565 at the ends of the fabrics correspond one-to-one with the insertion rods 563 of the plug 561. The operator holds the plug 561, aligns the insertion rods 563 with the insertion holes 565 at the ends of the outer fabric 3 and the inner fabric 4, and inserts them axially along the insertion holes 565, so that the insertion rods 563 pass through the insertion holes 565 of the outer fabric 3 and the inner fabric 4 in sequence, realizing the initial positioning of the outer fabric 3 and the inner fabric 4, and preventing the fabrics from shifting circumferentially or wrinkling in subsequent operations. After the insertion rod 563 passes through the insertion holes 565 of the outer fabric 3 and the inner fabric 4, the plug 561 is pushed further to insert the free end of the insertion rod 563 into the corresponding slot 564 of the socket 562. The inner wall of the slot 564 fits tightly against the insertion rod 563, restricting the axial and radial displacement of the insertion rod 563, thereby clamping and fixing the ends of the outer fabric 3 and the inner fabric 4 between the plug 561 and the socket 562. After locking, the ends of the outer fabric 3 and the inner fabric 4 are completely fixed and cannot slide with external force, ensuring that the side panel 2 always maintains the adjusted annular contour size. At the same time, multiple insertion rods 563 are distributed at intervals along the length of the plug 561, so that the stress on the fabric is evenly distributed to each insertion rod 563 and the socket 562, avoiding local stress concentration that could cause the fabric to tear.

[0037] When a secondary adjustment of the side panel 2 size is required, or when replacing the outer fabric 3 or inner fabric 4, pull the plug 561 away from the socket 562 to disengage the insertion rod 563 from the slot 564 of the socket 562. Then, pull out the insertion rod 563 to separate it from the insertion holes 565 of the outer fabric 3 and inner fabric 4, thus releasing the constraint on the fabric. After unlocking, the screw 5532 can be readjusted using the handle 5533 to change the lateral dimension of the side panel 2. The insertion and locking process of the insertion rod 563 can then be repeated to complete the fabric fixation under the new size, enabling the umbrella bag to be reused and adapted to multiple specifications.

[0038] To facilitate the sliding of the insertion rod 563 into the slot 564, please refer to... Figure 4 In a preferred embodiment, the fixing mechanism 56 further includes a ball head 566, which is connected to the end of the plug rod 563 and is located on the plug rod 563 near the socket 562.

[0039] In use, firstly, the ball head 566 has a smooth, curved surface structure, which provides automatic guidance when the plug 563 is inserted into the socket 562 slot 564. Even if there is a slight misalignment between the plug 561 and the socket 562, the ball head 566 can guide the plug 563 to slide into the slot 564 along the correct trajectory through the contact between the curved surface and the opening of the slot 564, eliminating the need for precise alignment by the operator and greatly reducing the difficulty of operation. Secondly, the curved surface of the ball head 566 makes point or line contact with the inner wall of the slot 564, which greatly reduces frictional resistance compared to the surface contact of the flat-head plug 563. During insertion and removal operations, the ball head 566 can prevent the end of the plug 563 from scraping against the edge of the slot 564, reducing wear on the plug 563 and the socket 562. At the same time, the gentleness of the sliding friction can prevent scratches and deformation on the inner wall of the slot 564, extending the overall service life of the fixing mechanism 56.

[0040] To simplify the process, please refer to... Figure 4 In a preferred embodiment, the fixing mechanism 56 further includes a spring 567, one end of which is connected to the plug 561 and the other end of which is connected to the socket 562. The spring 567 is in a stretched state, and the spring 567 causes the plug 561 and the socket 562 to tend to move closer together.

[0041] In use, firstly, the tension spring 567 is always in a stretched state, which can apply a continuous opposing pulling force to the plug 561 and the socket 562, forcing the plug 561 to pull the rod 563 towards the socket 562, so that the ball head 566 at the end of the rod 563 maintains a tight fit with the inner wall of the slot 564. Even under the high-frequency vibration and turbulence impact conditions of the buoy carrier aircraft during flight, this pulling force can counteract the loosening tendency caused by vibration, prevent the rod 563 from coming out of the slot 564, and ensure that the ends of the outer fabric 3 and the inner fabric 4 are always firmly fixed. Secondly, during assembly and locking, the tension of the spring 567 can assist the rod 563 to quickly slide into the slot 564 and complete the positioning, without the need for the operator to apply additional clamping force. During unlocking and disassembly, the operator only needs to apply a counterforce slightly greater than the tension of the spring 567 to pull the plug 561 to make the rod 563 come out of the slot 564, making the operation effortless and smooth. Compared to the springless plug structure of the 567, this design reduces the force required for plugging and unplugging, and improves ease of operation.

[0042] To improve the stability of the parachute fixation, please refer to... Figure 2 In a preferred embodiment, multiple sealing buckles 7 are provided, and the multiple sealing buckles 7 are distributed at intervals along the circumference of the blade 6 for the parachute ropes to pass through in order to complete the sealing and fixing of the parachute.

[0043] In use, firstly, after the parachute lines pass through multiple circumferentially spaced sealing buckles 7, tightening the lines creates a uniform annular constraint force on the blades 6. This constraint force is transmitted through the blades 6 to the parachute canopy, ensuring even force distribution along the circumferential edges of the canopy and preventing tearing due to concentrated force at a single point or in a localized area. Secondly, the buoy experiences high-frequency vibrations during takeoff from the carrier aircraft. Without multi-point constraint, the parachute is prone to displacement, stacking, or wrinkling within the canopy cavity. The multiple sealing buckles 7, evenly distributed circumferentially along the blades 6, combined with the tightening action of the parachute lines, precisely fix the circumferential edges of the parachute canopy to the canopy opening, maintaining the parachute in a preset folded posture within the cavity and preventing displacement or deformation due to vibration.

[0044] To better understand this invention, the following is combined with... Figure 1 - Figure 7 The working principle of a parachute pack according to the present invention is described in detail as follows: First, a rigid cylinder 5 is fixedly connected between the outer fabric 3 and the inner fabric 4 to form a side panel 2 with rigid support capacity; then, the bottom end of the side panel 2 is connected to the bottom fabric 1, and the top end of the side panel 2 is connected to the blade 6 to complete the assembly of the main structure of the parachute pack. The bottom fabric 1, the side panel 2 and the blade 6 together form a cavity for accommodating the parachute; then, the parachute is inserted into the cavity, and the parachute cords passing through the sealing buckle 7 on the blade 6 are used to tighten and seal it, so that the parachute is stably placed in the parachute pack cavity.

[0045] The sealed parachute is placed inside the buoy parachute compartment 8, and then the restraint straps are wrapped around the outside of the parachute pack side panel 2. The restraint straps are tightened with the drawstring to secure the parachute pack inside the compartment 8. During this tightening process, the restraint straps exert radial compressive force on the parachute pack side panel 2. Since the cylinder 5 between the outer fabric 3 and the inner fabric 4 in the side panel 2 forms a rigid support structure, this rigid structure can directly resist the radial compressive force, prevent the side panel 2 from shrinking and deforming, and thus avoid a reduction in the transverse cross-sectional area of ​​the parachute pack.

[0046] Under the support of the rigid cylinder 5, the overall shape of the parachute remains stable and will not cause an abnormal increase in axial height due to the shrinkage of the lateral section. This ensures that the axial height of the parachute is always controlled within the preset assembly height range of the parachute compartment 8, ultimately ensuring that the parachute compartment cover 9 and the parachute compartment 8 can be smoothly connected and assembled.

[0047] 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 pack, characterized in that, include: Base fabric; The side panel includes an outer fabric, an inner fabric, and a cylinder, the cylinder being connected to the bottom fabric and the outer fabric being connected to the inner fabric, forming a rigid support structure for the side panel; A blade, connected to the side of the cylinder away from the base fabric; and, A sealing buckle is attached to the blade.

2. The parachute pack according to claim 1, characterized in that, The cylinder includes a support, a bottom rod, side rods, a sleeve, an adjustment mechanism, and a fixing mechanism. Multiple bottom rods are arranged around the support and are slidably connected to the support radially. The fixed end of the adjustment mechanism is connected to the support, and the movable end of the adjustment mechanism is connected to the bottom rods. Multiple side rods are respectively connected to multiple bottom rods. The sleeve is fitted onto the side rods. The inner fabric slidably passes through the inner side of multiple sleeves, and the outer fabric slidably passes through the outer side of multiple sleeves. The fixing mechanism is used to fix the ends of the outer and inner fabrics. The bottom fabric is detachably connected to the side panel.

3. The parachute pack according to claim 2, characterized in that, The cylinder also includes a lifting ring connected to the sleeve. The outer fabric passes through the lifting ring located inside the sleeve, and the inner fabric passes through the lifting ring located outside the sleeve.

4. The parachute pack according to claim 2, characterized in that, The adjusting mechanism includes a wedge, support cylinders, and a power assembly. Multiple support cylinders are arranged in a ring around the support. Multiple bottom rods are slidably inserted through the multiple support cylinders. The wedge is slidably connected to the support along its axial direction. The end of each bottom rod is slidably connected to the wedge surface of the wedge. The wedge has a sliding surface for the bottom rod to slide. The fixed end of the power assembly is connected to the support, and the movable end of the power assembly is connected to the wedge. The power assembly drives the wedge to reciprocate, causing the multiple bottom rods to move closer or further apart.

5. The parachute pack according to claim 4, characterized in that, The power assembly includes a guide rod and a lead screw. The guide rod is connected to a support and extends along the axial direction of the support. The wedge is slidably connected to the guide rod, and the lead screw is rotatably connected to the support. The lead screw passes through the wedge and is threadedly connected to the wedge.

6. The parachute pack according to claim 5, characterized in that, The power assembly also includes a handle connected to a lead screw.

7. The parachute pack according to claim 2, characterized in that, The fixing mechanism includes a plug, a socket, and plug rods. Multiple plug rods are connected to the plug at intervals along the length of the plug. The socket is provided with slots for accommodating the plug rods. Both the outer and inner fabrics are provided with insertion holes for the plug rods to pass through.

8. The parachute pack according to claim 7, characterized in that, The fixing mechanism also includes a ball head, which is connected to the end of the plug rod and is located on the plug rod near the socket.

9. The parachute pack according to claim 7, characterized in that, The fixing mechanism also includes a spring, one end of which is connected to the plug and the other end of which is connected to the socket. The spring is in a stretched state, and the spring causes the plug and the socket to tend to move closer together.

10. The parachute pack according to claim 1, characterized in that, The sealing buckle is provided in multiple parts, and the multiple sealing buckles are distributed at intervals along the circumference of the blade, for the parachute lines to pass through to complete the sealing and fixing of the parachute.

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