Parachute opening device with pressure-maintaining function

Abstract

The utility model discloses a parachute opening device with a pressure-maintaining function, comprising a pressure-maintaining device, a parachute cabin, a propulsion member and a gas generator; the pressure-maintaining device comprises a base and an upper pressure cover, the bottom of the base is provided with a first through hole, the peripheral side of the base extends out a first mounting portion, the first mounting portion is provided with a first screw hole, the upper pressure cover is arranged on the base, and the peripheral side of the upper pressure cover extends out a second mounting portion, the second mounting portion is provided with a second screw hole. By providing a pressure-maintaining device, the second screw hole and the first screw hole are directly connected, and then the bolt is used to cooperate with the second screw hole and the first screw hole to control the distance between the upper pressure cover and the base. The shorter the distance, the greater the pressure applied by the upper pressure cover to the parachute cabin. After maintaining pressure for a period of time, the pressure-maintaining device is disassembled, and the canopy after pressure maintenance will have a folding memory, the canopy will not rebound, so that the parachute cabin will not loosen, thereby achieving the improvement of the folding density of the parachute in the parachute cabin.

Description

Technical Field

[0001] The utility model relates to the technology of the parachute field, in particular to a parachute opening device with a pressure-maintaining function. Background Art

[0002] A parachute is a deployable aerodynamic decelerator that uses the principle of air resistance and is inflated relative to the movement of air. Modern parachutes are an aviation tool that allows people or objects to land safely from the air to the ground. They are mainly made of flexible fabrics and are used for airborne combat and training, life-saving and training of aerospace personnel, training, competition and performance of parachutists, airdropping supplies, and recovering aircraft.

[0003] The greater the folding density of the parachute in the cabin, the more the canopy with a larger unfolding area can be folded and placed in the cabin with a limited volume. When the parachute is folded and placed in the cabin, the canopy is made of fabric and has resilience after folding, or some gas remains in the canopy when folded, and the canopy folding density is low, resulting in the parachute not being able to be folded well into the cabin. Therefore, it is necessary to propose a new solution to improve the above problems. Utility Model Content

[0004] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a parachute opening device with a pressure-maintaining function, which can effectively solve the problems that the existing canopy has resilience after being folded, or some gas remains in the canopy when folded, and the folded density of the canopy is low, resulting in the canopy not being able to be folded well into the parachute cabin.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A parachute opening device with a pressure-maintaining function comprises a pressure-maintaining device, a parachute cabin, a propulsion member and a gas generator; the pressure-maintaining device comprises a base and an upper pressure cover, the base having a first through hole at the bottom, a first mounting portion extending from the peripheral side of the base, a first screw hole at the first mounting portion, the upper pressure cover being arranged on the base, the upper pressure cover having a cavity, and a second mounting portion extending from the peripheral side of the upper pressure cover, the second mounting portion having a second screw hole, the second screw hole being directly connected to the first screw hole; the parachute cabin being arranged in the cavity, the parachute cabin having a accommodating cavity for storing a parachute, a second through hole being arranged at the bottom of the parachute cabin, the second through hole being connected to the accommodating cavity and the first through hole; the propulsion member being arranged in the accommodating cavity and completely covering the second through hole; the gas generator being arranged in the first through hole.

[0007] As a preferred solution, the parachute cabin comprises a base and a cabin body, the cabin body is arranged on the base, and the aforementioned accommodating cavity for storing the parachute is formed in the cabin body, and the aforementioned second through hole is opened on the base.

[0008] As a preferred solution, an annular groove for sleeve-mounting a sealing ring is provided on the peripheral side surface of the base.

[0009] As a preferred embodiment, there are multiple first mounting parts, which are circumferentially spaced apart on the circumference of the base. Correspondingly, there are also multiple second mounting parts, which are circumferentially spaced apart on the circumference of the upper pressure cover. The second screw hole on each second mounting part is directly connected to the first screw hole on the corresponding first mounting part.

[0010] As a preferred solution, the second through hole is directly connected to the first through hole.

[0011] As a preferred solution, multiple snap-fit ​​parts are provided on the sides of the second through hole, and the propulsion member is snap-fitted and fixed with the multiple snap-fit ​​parts. The snap-fit ​​parts play the role of fixing the propulsion member to prevent the propulsion member from being displaced due to vibration during transportation, installation, and flight of the UAV. If displacement occurs, the propulsion member cannot cover the second through hole well, and the gas generated by the gas generator cannot fill the propulsion member, thereby making the propulsion member unable to generate sufficient power to eject the cabin and the canopy.

[0012] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0013] By setting a pressure-maintaining device, the second screw hole and the first screw hole are connected to each other, and then the bolt is used to cooperate with the second screw hole and the first screw hole threads to control the distance between the upper pressure cover and the base. The shorter the distance, the greater the pressure applied by the upper pressure cover to the parachute cabin. After maintaining pressure for a period of time, the pressure-maintaining device is removed. The canopy after pressure maintenance will have a folding memory, and the canopy will not rebound, so that the parachute cabin will not loosen, thereby achieving an increase in the folding density of the parachute in the parachute cabin.

[0014] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an assembly perspective view of a preferred embodiment of the utility model;

[0016] Figure 2 It is an exploded view of a preferred embodiment of the utility model;

[0017] Figure 3 It is a front view of a preferred embodiment of the utility model;

[0018] Figure 4 It is an enlarged schematic diagram of the base in the preferred embodiment of the utility model;

[0019] Figure 5 It is an enlarged schematic diagram of the base in the preferred embodiment of the utility model.

[0020] Description of the accompanying drawings:

[0021] 10. Pressure-maintaining device 11. Base

[0022] 111, first through hole 112, first mounting portion

[0023] 113, first screw hole 12, upper gland

[0024] 121, cavity 122, second mounting portion

[0025] 123, second screw hole 20, parachute compartment

[0026] 201, accommodating cavity 202, second through hole

[0027] 203, buckle part 21, base

[0028] 211, annular groove 22, cabin

[0029] 30. Propelling member 40. Gas generator. DETAILED DESCRIPTION

[0030] Please refer to Figures 1 to 3 As shown, it shows the specific structure of a preferred embodiment of the utility model, including a pressure maintaining device 10, a parachute cabin 20, a propulsion member 30 and a gas generator 40.

[0031] The pressure-maintaining device 10 includes a base 11 and an upper pressure cover 12. The bottom of the base 11 is provided with a first through hole 111. A first mounting portion 112 is extended from the peripheral side of the base 11. The first mounting portion 112 is provided with a first screw hole 113. The upper pressure cover 12 is arranged on the base 11. The upper pressure cover 12 has a cavity 121. A second mounting portion 122 is extended from the peripheral side of the upper pressure cover 12. The second mounting portion 122 is provided with a second screw hole 123. The second screw holes 123 are directly connected to the first screw hole 113; in the present embodiment, there are a plurality of first mounting portions 112, which are arranged circumferentially at intervals on the circumference of the base 11, and correspondingly, there are a plurality of second mounting portions 122, which are arranged circumferentially at intervals on the circumference of the upper pressure cover 12, and the second screw holes 123 on each second mounting portion 122 are directly connected to the first screw holes 113 on the corresponding first mounting portion 112.

[0032] The parachute compartment 20 is arranged in the cavity 121, and the parachute compartment 20 has a accommodating cavity 201 for storing a parachute. A second through hole 202 is provided at the bottom of the parachute compartment 20, and the second through hole 202 connects the accommodating cavity 201 and the first through hole 111; in the present embodiment, the parachute compartment 20 includes a base 21 and a cabin body 22, the cabin body 22 is arranged on the base 21, and the aforementioned accommodating cavity 201 for storing a parachute is formed in the cabin body 22, and the aforementioned second through hole 202 is provided on the base 21; and an annular groove 211 for sleeved with a sealing ring is provided on the peripheral side surface of the base 21; a plurality of buckling parts 203 are provided on the side of the second through hole 202, and the second through hole 202 and the first through hole 111 are directly connected.

[0033] The propulsion member 30 is arranged in the accommodating chamber 201 and completely covers the second through hole 202; in the present embodiment, the propulsion member 30 is fastened and fixed with a plurality of buckling parts 203, and the buckling parts 203 play the role of fixing the propulsion member 30 to prevent the propulsion member 30 from being displaced due to vibration during transportation, installation, and flight of the drone. If displacement occurs, the propulsion member 30 cannot cover the second through hole 202 well, and the gas generated by the gas generator 40 cannot fill the propulsion member 30, thereby making the propulsion member 30 unable to generate enough power to eject the cabin 22 and the umbrella canopy; in addition, the parachute (not shown in the figure) stored in the accommodating chamber 201 includes an umbrella canopy and a plurality of umbrella ropes, one end of the umbrella rope is connected to the cabin bottom, and the other end is connected to the umbrella canopy, and the umbrella canopy and the umbrella rope are folded and placed in the accommodating chamber. Specifically, the umbrella canopy is folded and covered on the propulsion member 30, so that the umbrella canopy can be ejected when the propulsion member 30 is ejected.

[0034] The gas generator 40 is disposed in the first through hole 111 , and a rear end of the gas generator 40 extends outward from the first through hole 111 .

[0035] The method of using this embodiment is described in detail as follows:

[0036] First, the propulsion member 30 is fastened and fixed with the multiple buckling parts 203, and then the parachute is folded and placed in the accommodating cavity 201 and covered on the propulsion member 30, and the cabin body 22 is covered. Next, the parachute cabin 20 is set in the cavity 121, and then the bolts are threadedly matched with the second screw holes 123 and the first screw holes 113 to control the distance between the upper pressure cover 12 and the base 11, and sufficient pressure is applied to the parachute cabin and maintained for a period of time. After maintaining the pressure for a period of time, the pressure maintaining device 10 is removed. At this time, the canopy after pressure maintenance will have a folding memory, and the canopy will not rebound, so that the parachute cabin will not loosen, thereby achieving an increase in the folding density of the parachute in the parachute cabin.

[0037] When the drone or parachute system detects that the drone has a malfunction and needs to make an emergency landing, the relevant electronic components will send a pulse current to the gas generator 40. The gas generator 40 receives the pulse current and is excited. The gas generator 40 instantly generates a large amount of gas, and the generated gas quickly fills the propulsion member 30, causing the pressure difference inside and outside the propulsion member 30 to cause it to break away from the snap-fit ​​portion 203 and be ejected. At the same time, the propulsion member 30 will also push the canopy and the cabin 22 to be ejected. The cabin 22 is pushed away from the base 21 by the pushing action of the pushing member 30, and then the canopy is ejected. During the descent of the canopy and the drone, the canopy is inflated and expanded to achieve the effect of slowing the descent of the drone.

[0038] The design focus of the utility model is: by setting a pressure-maintaining device, the second screw hole and the first screw hole are directly connected, and then the bolt is used to cooperate with the second screw hole and the first screw hole threadably to control the distance between the upper pressure cover and the base. The shorter the distance, the greater the pressure applied by the upper pressure cover to the parachute cabin. After maintaining pressure for a period of time, the pressure-maintaining device is removed. The canopy after pressure maintenance will have a folding memory, and the canopy will not rebound, so that the parachute cabin will not loosen, thereby achieving an increase in the folding density of the parachute in the parachute cabin.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A parachute opening device with a pressure-maintaining function, characterized in that: It includes a pressure-maintaining device, a parachute cabin, a propulsion member and a gas generator; the pressure-maintaining device includes a base and an upper pressure cover, the bottom of the base is provided with a first through hole, the peripheral side of the base is extended with a first mounting portion, the first mounting portion is provided with a first screw hole, the upper pressure cover is arranged on the base, the upper pressure cover has a cavity, and the peripheral side of the upper pressure cover extends with a second mounting portion, the second mounting portion is provided with a second screw hole, and the second screw hole is directly connected to the first screw hole; the parachute cabin is arranged in the cavity, the parachute cabin has a accommodating cavity for storing a parachute, the bottom of the parachute cabin is provided with a second through hole, the second through hole connects the accommodating cavity and the first through hole; the propulsion member is arranged in the accommodating cavity and completely covers the second through hole; the gas generator is arranged in the first through hole.

2. The parachute opening device with pressure-maintaining function according to claim 1, characterized in that: The parachute cabin comprises a base and a cabin body, the cabin body is arranged on the base, and the aforementioned accommodating cavity for storing the parachute is formed in the cabin body, and the aforementioned second through hole is opened on the base.

3. The parachute opening device with pressure-maintaining function according to claim 2, characterized in that: An annular groove for sleeve-mounting a sealing ring is provided on the peripheral side surface of the base.

4. The parachute opening device with pressure-maintaining function according to claim 1, characterized in that: There are multiple first mounting parts, which are arranged circumferentially at intervals on the circumference of the base. Correspondingly, there are also multiple second mounting parts, which are arranged circumferentially at intervals on the circumference of the upper pressure cover. The second screw hole on each second mounting part is directly connected to the first screw hole on the corresponding first mounting part.

5. The parachute opening device with pressure-maintaining function according to claim 1, characterized in that: The second through hole is directly connected to the first through hole.

6. The parachute opening device with pressure-maintaining function according to claim 1, characterized in that: A plurality of buckling parts are arranged on the side of the second through hole, and the pushing member is buckled and fixed with the plurality of buckling parts.

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