A can opener with a steel cable seal assembly

Abstract

The utility model provides a kind of opening umbrella device with steel wire rope sealing assembly, including shell, spring tube, power spring, steel wire rope, gear train and unlocking mechanism, the outside end of spring tube is connected with sealing assembly;Sealing assembly includes outer tube and inner tube, the inner chamber of inner tube and the gap between outer tube and inner tube are all filled with sealing oil;The open end of outer tube is detachably connected with end cap, and the end of outer tube away from opening is connected with spring tube;The one end of inner tube close to end cap is equipped with first sealing ring, and the one end away from end cap is equipped with second sealing ring;The utility model is by sealing assembly design into double cylinder structure, and sealing oil is filled in cylinder body inside, sealing ring is set in the two ends of inner tube, by the cooperation of sealing oil and sealing ring, on the one hand, the sealing performance of sealing assembly is improved, on the other hand, the friction of steel wire rope and sealing ring can be lubricated, so as to meet the use demand of opening umbrella device under high reliability requirement and complex harsh environment.

Description

Technical Field

[0001] This utility model relates to the field of parachute opener technology, and in particular to an opener with a steel wire rope sealing assembly. Background Technology

[0002] The automatic parachute opener is a crucial device for ensuring parachute safety. Its core function is to automatically trigger the parachute deployment procedure at a predetermined safe altitude. This action relies on an internal mechanism where a compressed spring instantly releases energy, rapidly retracting the deployment cable connected to the parachute pack, thus reliably opening the parachute. This process requires the deployment cable to reciprocate smoothly and rapidly within the opener's housing.

[0003] Existing parachute deployers typically employ simple sealing designs for the moving parts of the wire rope, relying primarily on a single sealing ring (such as an O-ring). This traditional sealing structure has significant limitations: its sealing effect is generally poor, making it difficult to effectively isolate the parachute from the external environment. This problem is particularly pronounced when the parachute lands in harsh environments, such as at sea or in the desert. The immense impact force generated upon impact can easily damage the sealing interface, allowing seawater to seep into the internal cavity of the deployer; and in desert environments, even extremely fine sand particles can easily penetrate the sealing gaps and enter the interior.

[0004] Seawater intrusion can cause severe corrosion of internal metal parts of the parachute opener (such as springs, bearings, and triggering mechanisms); sand intrusion can lead to wear, jamming, or blockage of moving parts (especially the wire rope and its guide structure). These damages caused by environmental media intrusion directly threaten the reliability and service life of the parachute opener, potentially causing opening failure at critical moments and creating safety hazards. Therefore, traditional simple sealing methods relying solely on sealing rings are no longer sufficient to meet the high reliability requirements and complex, harsh environments (especially wading and dusty environments) of parachute openers. An efficient and reliable sealing solution for the moving parts of the wire rope is urgently needed. Utility Model Content

[0005] This invention proposes a parachute opener with a wire rope sealing assembly, which solves the problem that the simple sealing method of the moving parts of the wire rope in the prior art, which relies solely on sealing rings, can no longer meet the high reliability requirements and usage needs of the wire rope in complex and harsh environments.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides an umbrella opener with a steel wire rope sealing assembly, including a housing, a spring tube, a power spring, a steel wire rope, a gear system, and an unlocking mechanism, wherein the outer end of the spring tube is connected to the sealing assembly.

[0008] The sealing assembly includes an outer cylinder and an inner cylinder arranged coaxially. The inner cavity of the inner cylinder and the gap between the outer cylinder and the inner cylinder are filled with sealing oil. An end cap is detachably connected to the open end of the outer cylinder. The end of the outer cylinder away from the open end is connected to a spring tube. The center of the end faces of the inner cylinder, outer cylinder, and end cap are all provided with through holes that allow steel wire ropes to pass through. A first sealing ring is provided at the end of the inner cylinder near the end cap, and a second sealing ring is provided at the end away from the end cap. The first sealing ring and the second sealing ring are pressed and sealed by the connection between the end cap and the outer cylinder.

[0009] Specifically, the parachute opener also includes a force guiding hose, one end of which is provided with a quick-release connector for connecting a parachute or a reserve parachute; the other end of the force guiding hose is provided with a locking element for connecting the end cap.

[0010] Furthermore, the locking component includes a top cylinder, a gasket, and a locking cap. The top cylinder passes through the through hole of the end cap. A limiting ring is provided at the front end of the top cylinder located inside the end cap. The limiting ring abuts against the inner end face of the end cap. The front end face of the top cylinder abuts against the first sealing ring. The gasket and the locking cap are sequentially fitted onto the rear end of the top cylinder located outside the end cap. The locking cap is connected to the rear end of the top cylinder by a thread.

[0011] Preferably, the end of the inner cylinder away from the end cap is open, and a gasket is provided between the open end face of the inner cylinder and the second sealing ring.

[0012] Preferably, the inner cylinder has radially provided clearance grooves for inserting steel wire ropes on its sidewalls, and the clearance grooves extend to the axis of the inner cylinder.

[0013] Furthermore, gaskets are provided between the two ends of the inner cylinder and the first sealing ring and the second sealing ring, respectively.

[0014] Preferably, the outer wall of the inner cylinder is provided with a sealing groove, and a third sealing ring is embedded in the sealing groove.

[0015] Preferably, the first sealing ring and the second sealing ring are interference-fitted with the wire rope.

[0016] Optionally, the open end of the outer cylinder is snapped into an end cap or connected by a thread.

[0017] Preferably, the open end of the outer cylinder is provided with an external thread, and the inner side of the end cap is provided with an internal thread that matches the external thread.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) This utility model designs the sealing component at the outer end of the spring tube as a double-cylinder structure, fills the inner cavity of the inner cylinder and the gap between the outer cylinder and the inner cylinder with sealing oil, and sets sealing rings at both ends of the inner cylinder. Through the cooperation of sealing oil and sealing rings, the sealing performance of the sealing component is improved on the one hand, and the friction between the wire rope and the sealing ring can be lubricated on the other hand, so as to meet the use requirements of the umbrella opener in high reliability and complex and harsh environments.

[0020] (2) This utility model connects the parachute or backup parachute to the parachute opener by setting a force guiding hose, which can change the direction of the tension of the wire rope and meet the installation of the parachute opener in any position.

[0021] (3) This utility model sets a locking member at one end of the force guiding hose and connects it to the end cap of the sealing component. After the end cap is connected to the outer cylinder, it abuts against the first sealing ring through the locking member, thereby pressing the first sealing ring and the second sealing ring, ensuring the sealing effect of the sealing component.

[0022] (4) By setting one end of the inner cylinder as an open end, the sealing oil can quickly fill the inner cavity of the inner cylinder when the inner cylinder is inserted into the outer cylinder; at the same time, by setting a gasket on the open end face of the inner cylinder, the steel wire rope is prevented from pulling the second sealing ring during rapid movement, which would cause large deformation and lead to oil leakage.

[0023] (5) This utility model improves assembly efficiency by opening a clearance groove on the side wall of the inner cylinder, which facilitates the quick insertion of the wire rope into the inner cylinder; at the same time, by setting washers between the two ends of the inner cylinder and the sealing ring, the wire rope is prevented from pulling the sealing ring and deforming it during the movement, so that the sealing ring is embedded in the clearance groove.

[0024] (6) This utility model further improves the sealing performance of the sealing component by opening a sealing groove on the outside of the inner cylinder and embedding a sealing ring. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the external structure of an umbrella opener with a steel wire rope sealing assembly according to the present invention.

[0027] Figure 2 This is a cross-sectional structural diagram of the sealing component in an embodiment of the present invention;

[0028] Figure 3This is an exploded view of the sealing assembly in an embodiment of the present invention;

[0029] In the diagram: 1. Housing; 2. Bourdon tube; 3. Power spring; 4. Wire rope; 5. Sealing assembly; 6. Outer cylinder; 7. Inner cylinder; 8. End cap; 9. First sealing ring; 10. Second sealing ring; 11. Force guiding hose; 12. Quick-release connector; 13. Locking element; 14. Top cylinder; 15. Gasket; 16. Locking cap; 17. Limiting ring; 18. Clearance groove; 19. Third sealing ring; 20. External thread; 21. Internal thread. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Reference Figures 1 to 3 This utility model provides an umbrella opener with a steel wire rope sealing assembly, including a housing 1, a spring tube 2, a power spring 3, a steel wire rope 4, a gear system (not shown in the figure) and an unlocking mechanism (not shown in the figure), wherein the outer end of the spring tube 2 is connected to a sealing assembly 5;

[0032] The sealing assembly 5 includes an outer cylinder 6 and an inner cylinder 7 arranged coaxially. The inner cavity of the inner cylinder 7 and the gap between the outer cylinder 6 and the inner cylinder 7 are filled with sealing oil. An end cap 8 is detachably connected to the open end of the outer cylinder 6. The end of the outer cylinder 6 away from the open end is connected to the spring tube 2. The center of the end faces of the inner cylinder 7, the outer cylinder 6, and the end cap 8 are all provided with through holes that allow the steel wire rope 4 to pass through. A first sealing ring 9 is provided at the end of the inner cylinder 7 near the end cap 8, and a second sealing ring 10 is provided at the end away from the end cap 8. The first sealing ring 9 and the second sealing ring 10 are pressed and sealed by the connection between the end cap 8 and the outer cylinder 6.

[0033] This invention designs the sealing assembly 5 at the outer end of the spring tube 2 as a double-cylinder structure, and fills the inner cavity of the inner cylinder 7 and the gap between the outer cylinder 6 and the inner cylinder 7 with sealing oil. Sealing rings are set at both ends of the inner cylinder 7. Through the cooperation of the sealing oil and the sealing rings, on the one hand, the sealing oil seals the wire rope 4 in the sealing assembly 5, and the sealing rings at both ends of the inner cylinder 7 prevent the sealing oil from leaking out with the movement of the wire rope 4, thereby improving the sealing performance of the sealing assembly 5 and providing good waterproof and sandproof protection. On the other hand, the sealing oil lubricates the friction between the wire rope 4 and the sealing ring, reduces the wear of the sealing ring, and extends the service life of the sealing ring, thus meeting the needs of the parachute opener in high reliability requirements and complex and harsh environments.

[0034] In this embodiment, the gear system and the unlocking mechanism are existing technologies in the field, and their specific structures can be directly referred to existing patents (such as Chinese patent with publication number CN119239955A); the assembly structure of the spring tube 2, the power spring 3 and the wire rope 4 is existing technology in the field, and its specific assembly structure can be directly referred to existing patents (such as Chinese patent with publication number CN219406901U), and will not be described again in this embodiment.

[0035] Specifically, the parachute opener also includes a force guiding hose 11, one end of which is provided with a quick-release connector 12 for connecting a parachute or a reserve parachute; the other end of the force guiding hose 11 is provided with a locking member 13 for connecting the end cap 8.

[0036] In this embodiment, the structure of the force guiding hose 11 is the prior art in this field. Its specific structure can be directly referred to existing patents (such as Chinese patent with publication number CN219619382U), and will not be described again in this embodiment.

[0037] Furthermore, such as Figure 2 , 3 As shown, the locking component 13 includes a top cylinder 14, a gasket 15, and a locking cap 16. The top cylinder 14 passes through the through hole of the end cap 8. A limiting ring 17 is provided at the front end of the top cylinder 14 located inside the end cap 8. The limiting ring 17 abuts against the inner end face of the end cap 8. The front end face of the top cylinder 14 abuts against the first sealing ring 9. The gasket 15 and the locking cap 16 are sequentially fitted onto the rear end of the top cylinder 14 located outside the end cap 8. The locking cap 16 is connected to the rear end of the top cylinder 14 by a thread. When the end cap 8 is connected to the outer cylinder 6, the front end face of the top cylinder 14 abuts against the first sealing ring 9, thereby pressing the first sealing ring 9 and the second sealing ring 10 to ensure the sealing effect of the sealing component 5.

[0038] Preferably, such as Figure 2 , 3 As shown, the end of the inner cylinder 7 furthest from the end cap 8 is open, and a metal washer (not shown in the figure) is provided between the open end face of the inner cylinder 7 and the second sealing ring 10. By making the end of the inner cylinder 7 furthest from the end cap 8 (i.e. the end that extends into the outer cylinder 6) open, the sealing oil can quickly fill the inner cavity of the inner cylinder 7 when the inner cylinder 7 is inserted into the outer cylinder 6, ensuring that the inner cavity of the inner cylinder 7 is full of sealing oil. At the same time, by providing a washer on the open end face of the inner cylinder 7, the problem of oil leakage caused by the steel wire rope 4 pulling the second sealing ring 10 during rapid movement is avoided.

[0039] Preferably, such as Figure 3As shown, the inner cylinder 7 has a radially provided clearance groove 18 for inserting the wire rope 4 on its side wall, and the clearance groove 18 extends to the axis of the inner cylinder 7, which facilitates the quick insertion of the wire rope 4 into the inner cylinder 7, improves assembly efficiency, and also facilitates subsequent inspection and maintenance of the sealing component 5.

[0040] Furthermore, metal washers (not shown in the figure) are provided between the two ends of the inner cylinder 7 and the first sealing ring 9 and the second sealing ring 10, respectively. By providing washers between the two ends of the inner cylinder 7 and the sealing rings, the steel wire rope 4 is prevented from pulling and deforming the sealing rings during movement, causing the sealing rings to partially embed into the relief groove 18 and thus damaging the sealing rings.

[0041] Preferably, such as Figure 2 , 3 As shown, a sealing groove (not shown in the figure) is provided on the outer wall of the inner cylinder 7. A third sealing ring 19 is embedded in the sealing groove. By setting the third sealing ring 19, the inner cylinder 7 and the outer cylinder 6 are more tightly fitted, and the sealing performance of the sealing assembly 5 is further improved.

[0042] Preferably, the first sealing ring 9 and the second sealing ring 10 are interference-fitted with the wire rope 4, and the inner diameter of the first sealing ring 9 and the second sealing ring 10 is slightly smaller than the outer diameter of the wire rope 4, thereby maximizing the sealing performance of the sealing rings and preventing sealing oil from leaking out from the gap between the wire rope 4 and the sealing rings.

[0043] Optionally, the open end of the outer cylinder 6 can be snapped into or threaded into the end cap 8. The specific method of detachable connection can be flexibly selected according to the actual situation and is not limited to the snap-fit ​​and threaded connection mentioned in this embodiment.

[0044] Preferably, such as Figure 2 , 3 As shown, the open end of the outer cylinder 6 is provided with an external thread 20, and the inner side of the end cap 8 is provided with an internal thread 21 that matches the external thread 20. The open end of the outer cylinder 6 and the end cap 8 are connected by threads, and a fourth sealing ring (not shown in the figure) is provided on the outside of the threaded interface of the outer cylinder 6, so that the threaded surfaces of the outer cylinder 6 and the end cap 8 are sealed.

[0045] In this embodiment, all sealing rings used are O-rings.

[0046] In this embodiment, the end of the spring tube 2 that extends out of the housing 1 is also provided with a sealing cap (not shown in the figure), which further serves to provide waterproof sealing.

[0047] The installation method of sealing component 5 in this embodiment is as follows:

[0048] First, thread the wire rope 4 through the outer cylinder 6. Then, sequentially place the second sealing ring 10 and the washer onto the wire rope 4 and press them against the inner end face of the outer cylinder 6. Next, insert the wire rope 4 into the through hole of the inner cylinder 7 through the clearance groove 18. Then, place the third sealing ring 19 into the sealing groove on the outside of the inner cylinder 7. Next, fill the inside of the outer cylinder 6 with sealing oil and insert the inner cylinder 7 into the outer cylinder 6 (with the opening of the inner cylinder 7 facing the end face of the outer cylinder 6). After the sealing oil fills the inner cavity of the inner cylinder 7 and the gap between the outer cylinder 6 and the inner cylinder 7, then... The gasket and the first sealing ring 9 are sequentially fitted onto the wire rope 4 and pressed against the outer end face of the inner cylinder 7. Finally, the end cap 8, connected to the locking element 13, is locked to the outer cylinder 6 via a threaded connection. During the tightening of the end cap 8, the end cap 8 of the top cylinder 14 will slowly squeeze the first sealing ring 9. The squeezing force is transmitted to the second sealing ring 10 at the other end through the inner cylinder 7. After the end cap 8 and the outer cylinder 6 are completely locked, the first sealing ring 9 and the second sealing ring 10 are also squeezed into place, which can effectively prevent the sealing oil from leaking out with the movement of the wire rope 4. After the sealing assembly 5 is installed, the end of the outer cylinder 6 away from the opening is connected to the spring tube 2 via a threaded connection, thus completing the assembly of the umbrella opener. Figure 1 As shown.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A parachute opener with a wire rope sealing assembly, comprising a housing (1), a spring tube (2), a power spring (3), a wire rope (4), a gear train, and an unlocking mechanism, characterized in that, A sealing assembly (5) is connected to the outer end of the spring tube (2); The sealing assembly (5) includes an outer cylinder (6) and an inner cylinder (7) arranged coaxially. The inner cavity of the inner cylinder (7) and the gap between the outer cylinder (6) and the inner cylinder (7) are filled with sealing oil. An end cap (8) is detachably connected to the open end of the outer cylinder (6). The end of the outer cylinder (6) away from the open end is connected to the spring tube (2). The center of the end face of the inner cylinder (7), the outer cylinder (6), and the end cap (8) are all provided with through holes that allow the steel wire rope (4) to pass through. The end of the inner cylinder (7) near the end cap (8) is provided with a first sealing ring (9), and the end away from the end cap (8) is provided with a second sealing ring (10). The first sealing ring (9) and the second sealing ring (10) are pressed and sealed by the connection between the end cap (8) and the outer cylinder (6).

2. The umbrella opener with a wire rope sealing assembly as described in claim 1, characterized in that, The parachute opener also includes a force guide hose (11), one end of which is provided with a quick-release connector (12) for connecting a parachute or a reserve parachute; the other end of the force guide hose (11) is provided with a locking member (13) for connecting the end cap (8).

3. The umbrella opener with a wire rope sealing assembly as described in claim 2, characterized in that, The locking component (13) includes a top cylinder (14), a gasket (15), and a locking cap (16). The top cylinder (14) passes through the through hole of the end cap (8). The front end of the top cylinder (14) located inside the end cap (8) is provided with a limiting ring (17). The limiting ring (17) abuts against the inner end face of the end cap (8). The front end face of the top cylinder (14) abuts against the first sealing ring (9). The gasket (15) and the locking cap (16) are sequentially sleeved on the rear end of the top cylinder (14) located outside the end cap (8). The locking cap (16) is connected to the rear end of the top cylinder (14) by a thread.

4. The umbrella opener with a wire rope sealing assembly as described in claim 1, characterized in that, The inner cylinder (7) is open at the end away from the end cap (8), and a gasket is provided between the open end face of the inner cylinder (7) and the second sealing ring (10).

5. An umbrella opener with a wire rope sealing assembly as described in claim 1, characterized in that, The inner cylinder (7) has a radially provided clearance groove (18) for inserting the wire rope (4), and the clearance groove (18) extends to the axis of the inner cylinder (7).

6. An umbrella opener with a wire rope sealing assembly as described in claim 5, characterized in that, Gaskets are provided between the two ends of the inner cylinder (7) and the first sealing ring (9) and the second sealing ring (10), respectively.

7. An umbrella opener with a wire rope sealing assembly as described in claim 1, characterized in that, The outer wall of the inner cylinder (7) is provided with a sealing groove, and a third sealing ring (19) is embedded in the sealing groove.

8. An umbrella opener with a wire rope sealing assembly as described in claim 1, characterized in that, The first sealing ring (9) and the second sealing ring (10) are interference-fitted with the wire rope (4).

9. An umbrella opener with a wire rope sealing assembly as described in claim 1, characterized in that, The open end of the outer cylinder (6) is snapped into or threaded onto the end cap (8).

10. An umbrella opener with a wire rope sealing assembly as described in claim 9, characterized in that, The open end of the outer cylinder (6) is provided with an external thread (20), and the inner side of the end cap (8) is provided with an internal thread (21) that matches the external thread (20).

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