A cylinder suitable for use in a flap lock

Abstract

This utility model relates to a cylinder suitable for locking flaps, comprising a cylinder housing, a piston rod, a sliding sealing seat, a sealing seat, an air inlet, an exhaust outlet, a piston block, and a locking mechanism. The cylinder housing has a sliding sealing seat at the front end and a sealing seat at the rear end. The sliding sealing seat connects to the air inlet, and the sealing seat provides the exhaust outlet. The piston block is fixed to the end of the piston rod, and a locking mechanism is provided between the sliding sealing seat and the piston block. The locking mechanism consists of a locking ring and a locking pin mechanism. The locking pin mechanism includes a through hole, a locking pin, a floating piston, and a limiting ring. The piston rod has a connecting hole inside and a through hole on its side wall, which is sealed and connected to the through hole. The sliding sealing seat has an insertion hole inside, a pin hole and an inlet groove on its inner wall, and an air guide chamber at its end that communicates with the air inlet.

Description

Technical Field

[0001] This utility model relates to a cylinder suitable for locking flaps, belonging to the field of cylinder modification technology. Background Technology

[0002] Currently, most mechanisms are designed using standard linear-stroke cylinders. ① These cylinders experience significant lateral forces during the flapping motion, leading to substantial damage to their components. ② At the two extreme positions of the flap, the standard cylinder relies solely on air pressure to maintain operational stability. If there is a lack of air supply or a pressure drop due to leakage, the flap may fall, causing personal injury or equipment damage. This proposal addresses these two issues and offers solutions. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the technical problems in the prior art and provide a cylinder suitable for locking a flap.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A cylinder suitable for locking a flap includes:

[0006] The cylinder housing has a sliding sealing seat at its front end, through which a piston rod is slidably connected. A sealing seat is located at the rear end of the cylinder housing. An air inlet is connected to the sliding sealing seat, and an exhaust outlet is located on the sealing seat.

[0007] Piston block, the piston block is fixedly connected to the end of the piston rod;

[0008] A locking mechanism is provided between the sliding sealing seat and the piston block; the locking mechanism includes a locking ring provided at the front end of the piston block, a plurality of locking pin mechanisms are arranged in an annular array on the locking ring, the locking pin mechanism includes a through hole provided in the locking ring, a locking pin is connected in the through hole by a sliding seal, a floating piston is provided on the outer wall of the locking pin, two sets of limiting rings are provided at both ends of the through hole, the floating piston is located between the two sets of limiting rings, a connecting hole is provided inside the piston rod, and a through hole is provided on the side wall of the piston rod at the position corresponding to the locking ring, the connecting hole is sealed and connected to the through hole through the through hole; the locking mechanism also includes an annular insertion hole provided in the sliding sealing seat, the diameter of the insertion hole is larger than the diameter of the locking ring, a plurality of pin holes are arranged in an annular array on the inner wall of the insertion hole, and a guide groove with a bevel structure is also provided between the end face of the insertion hole and the pin hole;

[0009] An annular air guide cavity is provided at the end of the insertion hole, and the air guide cavity is connected to the air inlet.

[0010] As a further improvement of this utility model, a support spring for pushing the locking pin out of the through hole is provided between one set of limiting rings and the floating piston.

[0011] The support spring ensures the stability of the locking pin support, maintaining the lock even under pressure drop. It also ensures the locking pin extends by default, preventing blockage and jamming due to internal lubricating oil.

[0012] As a further improvement of this utility model, a number of air guide grooves are provided on the outer side wall of the locking ring. One end of the air guide groove is open at the front end of the locking ring, and the other end of the air guide groove is open on the wall surface of the through hole.

[0013] The air guide groove can ensure the efficient connection between the air pressure at the air inlet and the air pressure inside the through hole, thereby improving the sensitivity of the structure.

[0014] As a further improvement of this utility model, a gradually expanding hole is provided at the front end of the through hole, and the flared end of the gradually expanding hole is set towards the outside of the locking ring.

[0015] Gradual-expanding apertures can further improve structural sensitivity and ensure connectivity efficiency.

[0016] As a further improvement of this utility model, the front end of the locking pin has a spherical structure;

[0017] The spherical structure ensures that the locking pin can be stably slid into the pin hole through the guide groove, improving structural stability and ease of use.

[0018] The beneficial effects of this utility model are:

[0019] This invention improves cylinder safety by providing a self-locking structure at the end of the piston block. When the cylinder moves to its limit position, the self-locking prevents the piston rod from moving excessively and dislodging. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 This is the book Figure 2 A magnified view of a portion of point A in the middle.

[0024] In the diagram: 1. Cylinder housing; 2. Sliding seal seat; 3. Inlet nozzle; 4. Sealing seat; 5. Exhaust nozzle; 6. Piston rod; 7. Piston block; 8. Connecting hole; 9. Retaining ring; 10. Insertion hole; 11. Pin hole; 12. Inlet groove; 13. Air guide chamber; 14. Locking ring; 15. Through hole; 16. Limiting ring; 17. Locking pin; 18. Floating piston; 19. Support spring; 20. Air guide groove; 21. Diverging hole. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] like Figure 1 and Figure 2 A cylinder suitable for locking a flap, comprising:

[0027] The cylinder housing 1 has a sliding sealing seat 2 at its front end, through which a piston rod 6 is slidably connected. A sealing seat 4 is provided at the rear end of the cylinder housing 1. An air inlet 3 is connected to the sliding sealing seat 2, and an exhaust port 5 is provided on the sealing seat 4.

[0028] Piston block 7 is fixedly connected to the end of piston rod 6. A stepped ring is provided at the end of piston rod 6. A stepped hole corresponding to the stepped ring is provided on the inner wall of piston block 7. Piston block 7 is limited and fixed to the end of piston rod 6. A fixing ring 9 is also fixed to the end of stepped ring of piston rod 6 by thread. The fixing ring 9 is used to lock and fix piston block 7.

[0029] like Figure 3A locking mechanism is provided between the sliding sealing seat 2 and the piston block 7. The locking mechanism includes a locking ring 14 located at the front end of the piston block 7. The locking ring 14 and the piston block 7 are integrally formed and fixed to the outer wall of the piston rod 6. A plurality of locking pins 17 are arranged in a ring array on the locking ring 14. The locking pins 17 include a through hole 15 located in the locking ring 14. A locking pin 17 is connected to the through hole 15 by a sliding seal. The front end of the locking pin 17 is a spherical structure. A floating piston 18 is provided on the outer wall of the locking pin 17. Two sets of limiting rings 16 are provided at both ends of the through hole 15. The floating piston 18 is located between the two sets of limiting rings 16. Between the bottom limiting ring 16 and the floating piston 18, a support spring 19 is provided to push the locking pin 17 out of the through hole 15. The piston rod 6 is provided with a connecting hole 8 inside. A guide hole is provided on the side wall of the piston rod 6 at the position corresponding to the locking ring 14. The connecting hole 8 is sealed and connected to the through hole 15 through the guide hole. The locking mechanism includes an annular insertion hole 10 provided in the sliding sealing seat 2. The diameter of the insertion hole 10 is larger than the diameter of the locking ring 14. A plurality of pin holes 11 are arranged in an annular array on the inner wall of the insertion hole 10. A guide groove 12 with a bevel structure is also provided between the end face of the insertion hole 10 and the pin hole 11.

[0030] An annular air guide cavity 13 is provided at the end of the insertion hole 10, and the air guide cavity 13 is connected to the air inlet 3.

[0031] like Figure 2 The locking ring 14 has several air guide grooves 20 on its outer side wall. One end of the air guide groove 20 is open at the front end of the locking ring 14, and the other end of the air guide groove 20 is open on the wall of the through hole 15. A gradually expanding hole 21 is provided at the front end of the through hole 15, and the flared end of the gradually expanding hole 21 is set towards the outside of the locking ring 14.

[0032] In use, air is intake through exhaust nozzle 5 by default. Under the action of intake pressure and support spring 19, floating piston 18 causes locking pin 17 to extend relative to locking ring 14. Then, piston block 7 drives piston rod 6 to extend. When it reaches the limit position, locking ring 14 is inserted into insertion hole 10. At the same time, the end of locking pin 17 is finally inserted into pin hole 11 under the guidance of guide groove 12, realizing locking. At this time, piston block 7 is locked by the combination of pin hole 11 and locking pin 17. When locking is to be released, air is intake through air intake nozzle 3 at the front end. At this time, positive pressure is generated in air guide chamber 13. The pressure is transmitted to floating piston 18 through air guide groove 20 and gradually expanding hole 21. Floating piston 18 drives locking pin 17 to withdraw from pin hole 11, realizing the release of locking.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cylinder suitable for locking a flap, comprising: The cylinder housing (1) has a sliding sealing seat (2) at the front end, and a piston rod (6) is slidably connected to the sliding sealing seat (2). A sealing seat (4) is provided at the rear end of the cylinder housing (1). An air inlet (3) is connected to the sliding sealing seat (2), and an exhaust outlet (5) is provided on the sealing seat (4). Piston block (7), which is fixedly connected to the end of piston rod (6); Its characteristic is that a locking mechanism is provided between the sliding sealing seat (2) and the piston block (7); the locking mechanism includes a locking ring (14) provided at the front end of the piston block (7), and a plurality of locking pins (17) mechanisms are arranged in a ring array on the locking ring (14). The locking pins (17) mechanism includes a through hole (15) provided in the locking ring (14), and a locking pin (17) is connected to the through hole (15) by a sliding seal. A floating piston (18) is provided on the outer wall of the locking pin (17), and two sets of limiting rings (16) are provided at both ends of the through hole (15). The floating piston (18) is located at both ends of the through hole (15). Between the limiting rings (16), the piston rod (6) is provided with a connecting hole (8), and a through hole is provided on the side wall of the piston rod (6) corresponding to the locking ring (14). The connecting hole (8) is sealed and connected to the through hole (15) through the through hole. The locking mechanism includes an annular insertion hole (10) provided in the sliding sealing seat (2). The diameter of the insertion hole (10) is larger than the diameter of the locking ring (14). Several pin holes (11) are arranged in an annular array on the inner wall of the insertion hole (10). A guide groove (12) with a bevel structure is also provided between the end face of the insertion hole (10) and the pin hole (11). An annular air guide cavity (13) is provided at the end of the insertion hole (10), and the air guide cavity (13) is connected to the air inlet (3).

2. A cylinder suitable for locking a flap as described in claim 1, characterized in that: in A support spring (19) is provided between one set of limiting rings (16) and floating piston (18) for pushing locking pin (17) out of through hole (15).

3. A cylinder suitable for locking a flap as described in claim 1, characterized in that: in The outer wall of the locking ring (14) is provided with several air guide grooves (20). One end of the air guide groove (20) is open at the front end of the locking ring (14), and the other end of the air guide groove (20) is open on the wall of the through hole (15).

4. A cylinder suitable for locking a flap as described in claim 3, characterized in that: A gradually expanding hole (21) is provided at the front end of the through hole (15), with the flared end of the gradually expanding hole (21) facing the outside of the locking ring (14).

5. A cylinder suitable for locking a flap as described in claim 1, characterized in that: The front end of the locking pin (17) has a spherical structure.

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