An automatic separation mechanism

Abstract

The application discloses an automatic separation mechanism, which comprises a hook, a lock tongue and a sealing rod, the hook and the lock tongue are connected through a stepped rivet mode, the sealing rod and the lock tongue are connected through a small rivet mode, and can rotate around the connecting points, a torsional spring is sleeved on the stepped rivet, when the lock tongue enters the lock cavity, the torsional spring can generate a pre-tightening force, when the parachute drop object touches the ground, the force of the parachute disappears, the elastic force of the torsional spring acts on the parachute drop object rope loop, the parachute drop object rope loop is unhooked, the automatic separation of the parachute and the parachute drop object is realized, the application is a pure mechanical structure, the structure is simple and ingenious, no special process is needed, the application is easy to process and simple to preserve, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic separation, in particular to an automatic separation mechanism. Background Art

[0002] In order to separate the parachute from the airdropped object after it touches the ground, it is necessary to design a mechanism for automatic separation upon touchdown.

[0003] The ground separation mechanism on the market uses the explosion of pyrotechnics in response to an electrical signal to achieve automatic separation. This device is difficult to transport, has a complex structure, and is expensive to use, so it cannot meet the needs. Summary of the Invention

[0004] The present invention provides an automatic separation mechanism, which solves the problems of complex structure of the separation mechanism, difficult transportation and high cost caused by unstable raw materials.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic separation mechanism, comprising a curved hook, a lock tongue and a sealing rod, the curved hook comprising a first circular hole, a second circular hole and a lock cavity, the first circular hole and the second circular hole being respectively located at the upper and lower ends of the lock cavity, the first circular hole being located at the upper end of the second circular hole, and the first circular hole being connected to the parachute, a stepped rivet being provided inside the second circular hole, the lock tongue being located inside the lock cavity, a first connecting hole being provided at the lower end of the lock tongue, the first connecting hole and the second circular hole being connected through the stepped rivet, and the lock tongue rotating around the stepped rivet in the second circular hole, the sealing rod being located at the upper end of the lock tongue, a second connecting hole being provided at the upper end of the lock tongue, a rotating hole being provided at the tail end of the sealing rod, the second connecting hole and the rotating hole being connected through a small rivet provided, and the sealing rod rotating freely around the small rivet, the sealing rod preventing the airdrop rope loop sleeved in the lock tongue from falling off and preventing foreign objects from being hooked on the curved hook.

[0006] Preferably, the initial position of the sealing rod is located at the opening end of the lock cavity, and the upper end of the sealing rod is in contact with the inner wall contour of the lock cavity, and the lower end of the sealing rod is in contact with the outer wall contour of the lower end of the lock tongue, and the two ends of the sealing rod form a sealed state with the bent hook and the lock tongue.

[0007] Preferably, the inner wall of the lock cavity is in an arc-shaped structure, the lock tongue rotates around the step rivet, and the outer wall of the lock tongue fits with the inner wall of the lock cavity.

[0008] Preferably, the step rivet is covered with a torsion spring, and the two arms of the torsion spring are respectively fixed in the third small hole provided on the lock tongue and the groove of the bent hook. When the lock tongue rotates around the step rivet into the lock cavity, the torsion spring is subjected to a pre-tightening force. When the lock tongue is not subjected to other external forces, the lock tongue automatically pops out of the lock cavity under the action of the torsion spring.

[0009] Preferably, after the lock tongue pops out of the lock cavity, the open side of the lock tongue faces the lower end, the lower end of the sealing rod is separated from the outer wall contour of the lock tongue, and the airdrop rope loop slides off from the inside of the lock tongue.

[0010] Preferably, a first small hole is provided on the side wall of the hook, a safety wire is provided in the first small hole, a second small hole is provided on the side wall of the lock tongue, the lock tongue is screwed into the lock cavity, and the first small hole and the second small hole are connected by the safety wire, and the lock tongue is fixed in the lock cavity.

[0011] Preferably, the first small hole is close to the first circular hole, and when the first small hole and the second small hole are fixed by the safety wire, the lower end of the lock tongue is located in the lock cavity with a space reserved for rotation.

[0012] Preferably, the safety line is sleeved on the locking tongue and the hook, and the safety line passes through the airdrop rope loop at the same time.

[0013] Preferably, the opening of the parachute generates resistance, the airdropped object at the lower end of the hook generates tension, the lock tongue rotates into the rotation space reserved in the lock cavity, and the safety line is broken.

[0014] Compared with existing technologies, the present invention offers the following advantages: It utilizes a purely mechanical structure, utilizing a stepped rivet with an attached torsion spring to connect the hook and the locking tongue. A safety wire secures the locking tongue and the airdrop cord. The parachute opens to create resistance. Under the tension of the airdrop, the safety wire breaks, allowing the locking tongue to enter the bottom of the lock cavity. The torsion spring is preloaded. When the airdrop touches the ground, the tension dissipates, and the torsion spring's elastic force causes the locking tongue to disengage the cord from the mechanism, completing the separation. This sophisticated and simple structure requires no explosives or electrical signals, offers stable performance, is easy to use, and requires no specialized processes. It is easy to manufacture and store, while also reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached figure:

[0017] Figure 1 It is a structural schematic diagram of the automatic separation mechanism of the present invention;

[0018] Figure 2 is a cross-sectional view of the lower end of the hook of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the lock tongue of the present invention;

[0020] Numbers in the figure: 1. Hook; 101. First round hole; 102. Second round hole; 103. Lock cavity; 104. First small hole; 2. Lock tongue; 201. First connecting hole; 202. Second connecting hole; 203. Second small hole; 204. Third small hole; 3. Sealing rod; 301. Rotating hole; 4. Torsion spring; 5. Step rivet; 6. Small rivet; 7. Safety line; 8. Airdrop rope loop. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example: Figure 1-Figure 3As shown, an automatic separation mechanism is connected between a parachute and an airdrop. When the airdrop touches the ground, the parachute can automatically separate from the airdrop. The automatic separation mechanism includes a hook 1, a lock tongue 2 and a sealing rod 3. The hook 1 includes a first circular hole 101, a second circular hole 102 and a lock cavity 103. The first circular hole 101 and the second circular hole 102 are respectively located at the upper and lower ends of the lock cavity 103. The first circular hole 101 is located at the upper end of the second circular hole 102, and the first circular hole 101 is connected to the parachute. A step rivet 5 is provided inside the second circular hole 102. The lock tongue 2 is located inside the lock cavity 103. The inner wall of the lock cavity 103 is an arc-shaped structure. The lock tongue 2 rotates around the step rivet 5. The outer wall of the lock tongue 2 fits with the inner wall of the lock cavity 103, and the outer sleeve of the step rivet 5 is provided with a torsion spring 4. The two arms of the torsion spring 4 are respectively fixed in the third small hole 204 of the lock tongue 2 and the groove of the hook 1. When the lock tongue 2 rotates into the lock cavity 103 around the step rivet 5, the torsion spring 4 is subjected to a pre-tightening force. When the lock tongue 2 is not subjected to other external forces, the lock tongue 2 automatically pops out of the lock cavity 103 under the action of the torsion spring 4. After the lock tongue 2 pops out of the lock cavity 103, the open side of the lock tongue 2 faces the lower end, the lower end of the sealing rod 3 is separated from the outer wall contour of the lock tongue 2, and the airdrop rope loop 8 slides off and separates from the inside of the lock tongue 2. The lower end of the lock tongue 2 is provided with a first connecting rod. The first connecting hole 201 is connected to the second circular hole 102 by the step rivet 5, and the lock tongue 2 rotates around the step rivet 5 in the second circular hole 102, the sealing rod 3 is located at the upper end of the lock tongue 2, and the upper end of the lock tongue 2 is provided with a second connecting hole 202. The initial position of the sealing rod 3 is located at the open end of the lock cavity 103, and the upper end of the sealing rod 3 and the inner wall contour of the lock cavity 103 are fitted together, and the lower end of the sealing rod 3 and the outer wall contour of the lower end of the lock tongue 2 are fitted together. The two ends of the sealing rod 3 form a sealing state with the curved hook 1 and the lock tongue 2. The tail end of the sealing rod 3 is provided with a rotating hole 301, and the second connecting hole 202 is connected to the rotating hole 301. The locking tongue 2 is connected to the locking cavity 103 by a small rivet 6, and the sealing rod 3 rotates freely around the small rivet 6, and the sealing rod 3 prevents the airdrop rope loop 8 in the locking tongue 2 from falling off, and prevents foreign objects from being hooked on the hook 1. The side wall of the hook 1 is provided with a first small hole 104, and a safety line 7 is provided in the first small hole 104. The side wall of the locking tongue 2 is provided with a second small hole 203. The locking tongue 2 is screwed into the locking cavity 103, and the first small hole 104 and the second small hole 203 are connected by the safety line 7. The locking tongue 2 is fixed in the locking cavity 103, and the first small hole 104 is close to the first circular hole 101. When the first small hole 104 and the second small hole 203 are fixed by the safety line 7,The lower end of the lock tongue 2 is located in the reserved rotation space within the lock cavity 103. The safety wire 7 is wrapped around the lock tongue 2 and the hook 1. The lock tongue 2 is fixed in the set position, and the safety wire 7 simultaneously passes through the airdrop rope loop 8. The parachute opens to generate resistance, and the airdrop at the lower end of the hook 1 generates tension. The lock tongue 2 rotates into the reserved rotation space within the lock cavity 103, and the safety wire 7 is pulled apart.

[0023] Specific usage principle:

[0024] In the preparation stage, the parachute is first connected to the first circular hole 101 on the hook 1, and then the airdrop rope loop 8 is put into the lock tongue 2, and the lock tongue 2 is rotated so that the lock tongue 2 rotates into the lock cavity 103 of the hook 1. When the sealing rod 3 connected to the upper end of the lock tongue 2 by the small rivet 6 is rotated to the open end of the lock cavity 103, the closing rod forms contact and fit with the hook 1 and the lock tongue 2 respectively. At this time, the torsion spring 4 is pre-tightened, and the rotation of the sealing rod 3 is constrained, and the open side of the lock tongue 2 is sealed. Then, the safety wire 7 located in the first small hole 104 is passed through the second small hole 203 on the lock tongue 2 and connected to the airdrop rope loop 8. By tying a knot on the safety wire 7, the lock tongue 2 and the airdrop rope loop 8 can be fixed to prevent them from accidentally detaching.

[0025] During the working phase, the parachute opens and generates resistance. Under the action of the tension of the airdropped object, the safety line 7 is broken, the lock tongue 2 enters the bottom of the lock cavity 103, and the torsion spring 4 is pre-tightened. When the airdropped object touches the ground, the tension disappears. Under the action of the elastic force of the torsion spring 4, the lock tongue 2 drives the airdropped object rope loop 8 to separate from the interior of the lock cavity 103, completing the separation operation.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic separation mechanism, characterized in that: The invention comprises a curved hook, a lock tongue and a sealing rod, the curved hook comprises a first circular hole, a second circular hole and a lock cavity, the first circular hole and the second circular hole are respectively located at the upper and lower ends of the lock cavity, the first circular hole is located at the upper end of the second circular hole, and the first circular hole is connected to the parachute, a step rivet is provided inside the second circular hole, the lock tongue is located inside the lock cavity, a first connecting hole is provided at the lower end of the lock tongue, the first connecting hole and the second circular hole are connected through the step rivet, and the lock tongue rotates around the step rivet in the second circular hole, the sealing rod is located at the upper end of the lock tongue, the upper end of the lock tongue is provided with a second connecting hole, the tail end of the sealing rod is provided with a rotating hole, the second connecting hole and the rotating hole are connected through a small rivet, and the sealing rod rotates freely around the small rivet, so that the airdrop rope loop sleeved in the lock tongue is prevented from falling off by the sealing rod, and foreign objects are prevented from being hooked on the curved hook; The stepped rivet is covered with a torsion spring, and two arms of the torsion spring are respectively fixed in the third small hole provided on the lock tongue and the groove of the bent hook. When the lock tongue rotates around the stepped rivet into the lock cavity, the torsion spring is subjected to a pre-tightening force. When the lock tongue is not subjected to other external forces, the lock tongue automatically pops out of the lock cavity under the action of the torsion spring. After the lock tongue pops out of the lock cavity, the open side of the lock tongue faces downward, the lower end of the sealing rod is separated from the outer wall contour of the lock tongue, and the airdrop rope loop slides off from the inside of the lock tongue; The side wall of the hook is provided with a first small hole, a safety wire is provided in the first small hole, the side wall of the lock tongue is provided with a second small hole, the lock tongue is screwed into the lock cavity, and the first small hole and the second small hole are connected by the safety wire, and the lock tongue is fixed in the lock cavity.

2. The automatic separation mechanism according to claim 1, characterized in that: The initial position of the sealing rod is located at the open end of the lock cavity, and the upper end of the sealing rod is in contact with the inner wall contour of the lock cavity, and the lower end of the sealing rod is in contact with the outer wall contour of the lower end of the lock tongue. The two ends of the sealing rod form a sealed state with the curved hook and the lock tongue.

3. The automatic separation mechanism according to claim 1, characterized in that: The inner wall of the lock cavity is in an arc-shaped structure, the lock tongue rotates around the step rivet, and the outer wall of the lock tongue fits with the inner wall of the lock cavity.

4. The automatic separation mechanism according to claim 1, characterized in that: The first small hole is close to the first circular hole. When the first small hole and the second small hole are fixed by the safety wire, the lower end of the lock tongue is located in the lock cavity with a space reserved for rotation.

5. The automatic separation mechanism according to claim 4, characterized in that: The safety line is sleeved on the locking tongue and the hook, and the safety line passes through the airdrop rope loop at the same time.

6. The automatic separation mechanism according to claim 5, characterized in that: The opening of the parachute generates resistance, and the airdropped object at the lower end of the hook generates tension, so that the lock tongue rotates into the rotation space reserved in the lock cavity, and the safety line is broken.

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