Reinforced gas spring with protection function

Abstract

The invention relates to the technical field of gas springs, in particular to a reinforced gas spring with a protection function, which comprises a plunger rod, a connecting lug is arranged at one end of the plunger rod, the other end of the plunger rod is slidably arranged in a plunger sleeve rod, an energy conversion assembly comprises a gas guide cylinder and a spiral shaft rod positioned in the gas guide cylinder, and a rotary sleeve is arranged at one end of the spiral shaft rod. Air flow enters the air guide cylinder and then flows along the spiral cavity to push the spiral shaft rod to rotate, and conversion from air flow kinetic energy to rotation kinetic energy is achieved. Through gas flow kinetic energy conversion, rotation kinetic energy consumption, adjustable damping control and automatic pressure relief protection, a more stable buffering process is achieved, and the device can be widely applied to the fields of automobiles, industrial equipment, medical instruments, aerospace and the like and has the advantages of being high in stability, high in safety, adjustable and wide in adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of gas springs, and in particular to a reinforced gas spring with a protective function. Background Art

[0002] Gas springs are widely used as cushioning components in automotive, industrial equipment, medical devices, aerospace, and other fields, primarily providing support, cushioning, and shock absorption. Traditional gas springs typically utilize gas compression and expansion for cushioning. They typically contain a gas chamber and control gas flow through a piston or pore structure to achieve a cushioning effect on telescopic movement. However, existing technologies still have the following problems and limitations: Traditional gas springs rely primarily on the compression and release of gas within a cavity to cushion external impacts. However, because gas flow is constrained by a fixed orifice structure, the airflow path is prone to turbulence and sudden pressure changes. This can lead to sudden impact force fluctuations during the cushioning process, affecting the stability and comfort of the equipment. In high-load or high-speed motion scenarios (such as car trunks and shock-absorbing structures on mechanical equipment), traditional gas springs offer uneven cushioning, prone to localized stress concentration, and can increase equipment vibration, shortening their service life.

[0003] Most existing gas springs use a single orifice or one-way valve to control airflow. This results in a fixed damping force and prevents dynamic adjustment to varying loads or motion requirements. In practical applications, such as industrial robotic arms or vehicle suspension systems, damping requirements vary significantly depending on the operating conditions. Conventional gas springs struggle to adapt to varying loads, limiting equipment flexibility and efficiency.

[0004] In high-frequency, high-impact operating environments, traditional gas springs absorb kinetic energy solely through gas expansion and compression, failing to effectively dissipate excess energy generated during equipment movement. This can lead to structural damage in high-impact scenarios, impacting long-term reliability. Some high-end equipment (such as aerospace equipment and industrial heavy-load cushioning systems) requires efficient cushioning and energy absorption capabilities. However, existing gas springs can experience insufficient cushioning force, gas leakage, or seal damage when subjected to severe impact, shortening equipment lifespan.

[0005] In view of this, research and improvement are carried out on the existing problems, and a reinforced gas spring with protective function is provided to solve the current problems. The purpose is to achieve the purpose of solving the problems and improving the practical value through this technology. Summary of the Invention

[0006] The present invention aims to solve the technical problems existing in the prior art or related technologies, namely that existing gas springs mainly rely on gas compression and circulation for buffering, but in high-load or high-speed motion scenarios, there are problems such as unstable buffering process, non-adjustable damping force, low kinetic energy absorption efficiency, and lack of active pressure relief protection. In particular, in high-impact and high-frequency vibration environments, traditional gas springs have difficulty effectively controlling the buffering process, resulting in increased equipment vibration, seal damage, shortened lifespan, and even safety hazards. Therefore, there is an urgent need for a new gas spring with efficient energy conversion capabilities, adjustable damping structure, and safe pressure relief protection function.

[0007] To this end, the technical solution adopted by the present invention is: a reinforced gas spring with a protective function, comprising: a plunger rod, one end of which is connected to a connecting ear, and the other end of which is slidably arranged inside the plunger rod; The plug rod has a threaded outer surface and is sleeved with an adjusting screw ring and a return spring, and is used to adjust the position of the adjusting screw ring to change the preload force of the return spring; the top end of the plug rod is provided with a top cover head and is connected to the air flow channel; The energy dissipation and damping assembly comprises a connecting seat, a rotating sleeve seat, and a fixed shaft seat, and the energy dissipation and damping assembly absorbs and consumes part of the kinetic energy; The energy conversion assembly includes an air guide cylinder and a spiral shaft located in the air guide cylinder. The inner side of the air guide cylinder is provided with a rotary sleeve sleeved on the surface of the spiral shaft for converting airflow energy into rotational kinetic energy of the spiral shaft. The pressure relief cylinder has a floating plug slidingly installed on the inside and a pressure relief valve head connected to the bottom end, which is used to release gas in overpressure conditions.

[0008] Preferably, the plunger rod drives the air flow inside the sleeve rod to move during the extension and retraction process, and utilizes the air flow channel to flow the air inside the sleeve rod and the air guide cylinder. After the air flow enters the air guide cylinder, it drives the spiral shaft rod to rotate, thereby realizing kinetic energy conversion.

[0009] Preferably, when the spiral shaft rotates, one end thereof is connected to the energy dissipation and damping assembly through a rotary sleeve, thereby transmitting the rotational energy to the energy dissipation and damping assembly.

[0010] Preferably, the top end of the spiral shaft is fixedly connected to the bottom surface of the rotating sleeve, and the rotating sleeve is rotatably sleeved on the outer periphery of the fixed shaft seat. A brake plate is rotatably installed on the surface of the fixed shaft seat, and the bottom surface of the fixed shaft seat is provided with a hydraulic control rod and an elastic push rod connected to the brake plate surface.

[0011] Preferably, both ends of the hydraulic control rod and the elastic push rod are movably connected to the ends of the two brake plates, respectively, for pushing the two brake plates to slide and abut against the inner side of the connecting seat.

[0012] Preferably, the spiral shaft is a spiral shaft structure made of rubber material, and the air guide cylinder is in the shape of a metal rigid sleeve, and the inner side of the air guide cylinder is a spiral cavity.

[0013] Preferably, the bottom surface of the rotating sleeve seat is provided with a plurality of through holes for communicating the air flow inside the seat and guiding the air flow into the interior of the rotating sleeve along the spiral shaft.

[0014] Preferably, the pressure relief cylinder is connected to the air flow channel. When the internal pressure of the gas spring exceeds a preset value, the pressure relief valve head opens, causing the floating plug to move downward to release excess gas, thereby preventing structural damage caused by excessive internal pressure.

[0015] The plunger rod has a fixed lug on one end for connecting to the mounting bracket, while the other end slides inside the plunger rod, enabling the gas spring to extend and retract. The plunger rod has threads on its outer surface for attaching the adjusting screw and return spring to adjust the spring's preload to suit varying load requirements. Its top end features a cap connected to the gas flow channel to guide gas flow.

[0016] The energy conversion assembly is used to convert the kinetic energy of the airflow into rotational kinetic energy, and drive the energy dissipation and damping assembly to consume the kinetic energy. Air guide cylinder: fixedly installed inside the plug sleeve rod and connected to the airflow channel. Its inner wall is provided with a spiral cavity, which is used to guide the incoming airflow to flow along the set path. Spiral shaft: located inside the air guide cylinder, the outer surface of the shaft is provided with a spiral flow channel, and a flow structure is formed along the inner wall of the spiral cavity, which can make the airflow move along the spiral path and drive the spiral shaft to rotate. Rotary sleeve: sleeved on the outside of the spiral shaft and rotates with the spiral shaft. The function of the rotary sleeve is to transfer the rotational kinetic energy to the energy dissipation and damping assembly.

[0017] The energy dissipation and damping components are used to consume rotational kinetic energy to provide a buffering and damping effect to prevent sudden changes in impact force caused by excessive telescopic movement.

[0018] Connecting seat: Serves to connect the transducer assembly and the energy dissipation and damping assembly, providing structural support for the energy dissipation and damping process. Rotating sleeve: Fixedly connected to the top of the spiral shaft, rotating synchronously with the spiral shaft. Fixed shaft seat: Rotatingly sleeved inside the rotating sleeve, allowing the sleeve to rotate freely on its surface. Brake plate: Located inside the fixed shaft seat, it forms frictional contact with the inner wall of the rotating sleeve.

[0019] Hydraulic control lever and elastic push rod: The hydraulic control lever hydraulically adjusts the pressure of the brake pad on the rotating sleeve, thereby varying the friction and achieving dynamic damping effect. The elastic push rod provides elastic restoring force, restoring the brake pad to the default friction state when no external adjustment is required.

[0020] The pressure relief cylinder is used to release excess gas when the internal pressure of the gas spring increases abnormally, ensuring safe operation of the system. The floating plug is installed inside the pressure relief cylinder and can adjust its displacement according to the changes in internal pressure.

[0021] When the internal pressure of the gas spring is normal, the pressure relief valve head is closed. When the internal pressure exceeds the set threshold, the floating plug is pressed downward, pushing the pressure relief valve head open, releasing excess gas, preventing overload damage, and improving system safety.

[0022] The beneficial effects achieved by the present invention are: 1. Traditional gas springs mainly rely on gas compression and circulation for cushioning, while this invention innovatively adopts a spiral shaft to convert the kinetic energy of the airflow into rotational kinetic energy, making the cushioning process smoother and reducing the vibration and impact caused by airflow turbulence: the spiral cavity structure of the spiral shaft plus the air guide cylinder optimizes the airflow path, improves the efficiency of airflow kinetic energy conversion, makes the expansion and contraction resistance more uniform, reduces the sudden change of impact force, and increases the life of the gas spring.

[0023] 2. The energy dissipation damping assembly of this invention utilizes a friction damping structure consisting of a brake plate, a hydraulic control rod, and an elastic push rod. This precisely dissipates rotational kinetic energy, achieving adjustable damping to adapt to varying load conditions. Adjusting the brake plate via the hydraulic control rod varies the friction force, dynamically controlling the gas spring's expansion and contraction speed and cushioning strength. This provides greater adaptability than the single, fixed damping structure of traditional gas springs.

[0024] 3. In this invention, the rotating sleeve and fixed shaft seat form a highly efficient rotational energy dissipation structure. This structure can quickly disperse rotational kinetic energy during heavy load impacts, preventing component damage from single-point impacts. The spiral shaft is made of wear-resistant material, improving impact resistance while reducing wear caused by prolonged rotation, thereby extending the service life of the gas spring.

[0025] In summary, the present invention provides a gas spring structure with high stability, high safety, adjustability and wide adaptability through the combination of airflow kinetic energy conversion, rotational energy consumption, adjustable damping control and automatic pressure relief. Compared with traditional gas springs, it has better cushioning performance and longer service life, can effectively reduce impact force, improve equipment reliability, and is suitable for the needs of various industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 A schematic cross-sectional view of an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a transducer assembly according to an embodiment of the present invention; Figure 4A schematic diagram of the energy dissipation damping assembly and the spiral shaft structure according to an embodiment of the present invention; Figure 5 This is a structural schematic diagram of a fixed shaft seat according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of a pressure relief cylinder according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the gas guide cylinder and the spiral shaft according to an embodiment of the present invention.

[0027] Reference numerals: 100, plunger rod; 110, connecting ear; 200, sleeve rod; 210, adjusting screw ring; 220, return spring; 201, thread; 202, top cover head; 203, air flow channel; 300, energy dissipation damping assembly; 310, connecting seat; 320, rotating sleeve seat; 330, fixed axis seat; 331, brake plate; 332, hydraulic control rod; 333, elastic push rod; 400, transducer assembly; 410, air guide cylinder; 420, spiral shaft; 411, rotary sleeve; 500, pressure relief cylinder; 510, floating plug; 511, pressure relief valve head. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0029] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0030] The following is combined with Figures 1 to 7 A reinforced gas spring with a protective function provided by some embodiments of the present invention is described.

[0031] This embodiment provides a reinforced gas spring with a protective function, and its structure is as follows Figures 1 to 7 As shown, it includes a plunger rod 100, a sleeve rod 200, an energy dissipation and damping assembly 300, an energy conversion assembly 400 and a pressure relief cylinder 500, which are used to achieve more stable buffering control and improve the safety and durability of the gas spring through airflow kinetic energy conversion, rotational kinetic energy consumption and pressure relief protection mechanism during the expansion and contraction process of the gas spring.

[0032] A reinforced gas spring with protective function mainly includes the following structures: 1Gas spring body The plunger rod 100 has a connecting ear 110 fixedly connected to one end thereof for connecting to the mounting bracket, and the other end thereof is slidably disposed inside the sleeve rod 200 .

[0033] Plug rod 200: Its outer surface is provided with a thread 201, which can be sleeved with an adjusting screw ring 210 and a return spring 220. The adjusting screw ring 210 is used to change the preload force of the return spring 220 to adjust the rebound performance of the gas spring.

[0034] Air flow channel 203 : During the expansion and contraction of the gas spring, the internal gas flows along the air flow channel 203 and enters the energy conversion assembly 400 .

[0035] 2 transducer components 400 The air guide cylinder 410 is located on one side of the plug sleeve rod 200 and is connected to the air flow channel 203. The inner wall of the air guide cylinder 410 is provided with a spiral cavity, so that the incoming air flow spirals up along the surface of the spiral shaft 420.

[0036] The spiral shaft 420 is located inside the air guide cylinder 410. A spiral flow channel is provided on its surface and the inner side of the rotary sleeve 411. The outer periphery of the spiral shaft 420 is interference fit with the inner side of the rotary sleeve 411. It rotates under the impetus of the airflow, realizing the conversion of airflow kinetic energy into rotational kinetic energy.

[0037] The rotary sleeve 411 is sleeved on the outside of the spiral shaft 420 and maintains rotational contact therewith to transfer the rotational energy to the energy dissipation and damping assembly 300 .

[0038] 3 Energy dissipation damping components 300 The connecting seat 310 is used to connect the energy conversion component 400 and the energy dissipation and damping component 300 and control the air flow.

[0039] The rotating sleeve 320 is fixedly connected to the top of the spiral shaft 420 and rotates synchronously with the spiral shaft 420.

[0040] The fixed shaft seat 330 is sleeved on the inner side of the rotating sleeve seat 320, and the rotating sleeve seat 320 can rotate relative to it.

[0041] The brake plate 331 is arranged inside the fixed shaft seat 330 and uses the hydraulic control rod 332 and the elastic push rod 333 to apply friction force to control the damping of the rotating sleeve seat 320.

[0042] 4 pressure relief cylinder 500 Floating plug 510: It is set inside the pressure relief cylinder 500 and can float and adjust its position when the air flow pressure changes.

[0043] Pressure relief valve head 511: used to open when the pressure exceeds the set threshold to release excess gas and prevent internal overload damage to the gas spring.

[0044] The working principle and use process of the present invention: How it works The present invention mainly utilizes the airflow kinetic energy conversion, damping energy dissipation and pressure relief protection mechanism to achieve buffering and protection of gas spring movement. Its specific working principle is as follows: 1. Gas Spring Telescopic Movement and Airflow Drive: During use, the plunger rod 100 telescopes relative to the sleeve rod 200, causing the gas inside the sleeve rod 200 to flow through the airflow channel 203 and into the air guide cylinder 410. The airflow flows within the air guide cylinder 410 along the spiral cavity of the spiral shaft 420, driving the spiral shaft 420 to rotate.

[0045] 2. Converting airflow kinetic energy into rotational kinetic energy: Through holes inside the fixed-axis seat 330 guide airflow toward the rotating sleeve 411. The airflow causes the spiral shaft 420 to rotate, and its top is fixedly connected to the rotating sleeve 320, thereby driving the rotating sleeve 320 to rotate. The rotating sleeve 320 is sleeved around the outer periphery of the fixed-axis seat 330, allowing it to rotate freely.

[0046] 3. Rotational Energy Dissipation and Damping Control: The rotation of the screw shaft 420 drives the rotating sleeve 320, while the fixed shaft seat 330 remains stationary. A brake plate 331 is provided on the fixed shaft seat 330. Driven by a hydraulic control lever 332 and an elastic push rod 333, the brake plate 331 forms frictional contact with the inner wall of the rotating sleeve 320, dissipating some of the rotational energy and achieving damping control. The hydraulic control lever 332 hydraulically adjusts the friction force of the brake plate 331 on the screw shaft 420, providing an adjustable damping effect.

[0047] 4. Pressure relief protection mechanism: When the gas spring is subjected to a large external force or the air pressure rises abnormally, the air flows through the rotary sleeve 411 and enters the pressure relief cylinder 500. After that, the floating plug 510 moves downward under pressure, triggering the pressure relief valve head 511, thereby releasing excess gas, preventing damage to the gas spring caused by excessive internal pressure and improving safety.

[0048] Usage Process The present invention is applicable to gas spring devices that require buffering and protective functions, and the use process is as follows: 1. Equipment installation: According to the use requirements, the connecting ear 110 of the gas spring and the top cover head 202 of the plug sleeve rod 200 are installed to the specified position. By rotating the adjusting screw ring 210, the preload force of the return spring 220 is adjusted to adapt to different load requirements.

[0049] 2. Energy conversion during operation: When the device is subjected to force to cause the gas spring to expand and contract, the internal airflow enters the air guide cylinder 410 through the airflow channel 203, flows along the surface of the spiral shaft 420 and the internal spiral flow channel of the rotating sleeve 411, and drives the spiral shaft 420 to rotate.

[0050] The rotating spiral shaft 420 drives the rotating sleeve 320 to rotate on the surface of the fixed shaft seat 330 through the rotating sleeve 411 .

[0051] 3. Damping adjustment The brake plate 331 generates friction with the fixed shaft seat 330, providing rotational damping, making the gas spring's expansion and contraction process smoother and avoiding violent shocks. By adjusting the hydraulic control rod 332, the friction force of the brake plate 331 can be changed to achieve buffer adjustment under different loads.

[0052] 4. Automatic pressure relief protection After a high-intensity impact or prolonged use, the internal pressure of the gas spring may increase. The pressure relief cylinder 500 automatically releases excess gas through the pressure relief valve head 511 to prevent structural damage and improve safety.

[0053] 5. Maintenance and Adjustment After long-term use, the wear of the brake plate 331 and the spiral shaft 420 can be regularly checked and the worn parts can be replaced if necessary. The damping effect can be optimized by adjusting the hydraulic control rod 332 and the elastic push rod 333 to adapt to different environments and working conditions.

[0054] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A reinforced gas spring with protective function, characterized in that: include: A plunger rod (100) having a connecting ear (110) connected to one end and the other end slidably disposed inside the sleeve rod (200); A plug sleeve rod (200) is provided with a screw thread (201) on its outer surface and is sleeved with an adjusting screw ring (210) and a return spring (220), and is used to adjust the position of the adjusting screw ring (210) to change the preload force of the return spring (220); a top cover head (202) is provided at the top end of the plug sleeve rod (200) and is connected to an air flow channel (203); An energy dissipation and damping assembly (300) comprises a connecting seat (310), a rotating sleeve seat (320), and a fixed shaft seat (330), and the energy dissipation and damping assembly (300) absorbs kinetic energy to consume part of the kinetic energy; The energy conversion assembly (400) includes an air guide cylinder (410) and a spiral shaft (420) located in the air guide cylinder (410), wherein a rotary sleeve (411) is provided on the inner side of the air guide cylinder (410) and is sleeved on the surface of the spiral shaft (420) for converting airflow energy into rotational kinetic energy of the spiral shaft (420); The pressure relief cylinder (500) has a floating plug (510) slidably mounted on its inner side and a pressure relief valve head (511) connected to its bottom end for releasing gas in the event of overpressure.

2. The reinforced gas spring with protective function according to claim 1, characterized in that: The plunger rod (100) drives the airflow inside the sleeve rod (200) during the extension and retraction process, and utilizes the airflow channel (203) to cause the airflow inside the sleeve rod (200) and the air guide cylinder (410) to flow. After the airflow enters the air guide cylinder (410), it drives the spiral shaft rod (420) to rotate, thereby realizing kinetic energy conversion.

3. The reinforced gas spring with protective function according to claim 1, characterized in that: When the spiral shaft (420) rotates, one end thereof is connected to the energy dissipation and damping assembly (300) via the rotating sleeve (411), thereby transmitting the rotational energy to the energy dissipation and damping assembly (300).

4. The reinforced gas spring with protective function according to claim 1, characterized in that: The top end of the spiral shaft (420) is fixedly connected to the bottom surface of the rotating sleeve (320), and the rotating sleeve (320) is rotatably sleeved on the outer periphery of the fixed shaft seat (330). A brake plate (331) is rotatably mounted on the surface of the fixed shaft seat (330), and the bottom surface of the fixed shaft seat (330) is provided with a hydraulic control rod (332) and an elastic push rod (333) connected to the surface of the brake plate (331).

5. The reinforced gas spring with protective function according to claim 4, characterized in that: The ends of the hydraulic control rod (332) and the elastic push rod (333) are respectively movably connected to the ends of the two brake plates (331) for pushing the two brake plates (331) to slide and abut against the inner side of the connecting seat (310).

6. The reinforced gas spring with protective function according to claim 1, characterized in that: The spiral shaft (420) is a spiral shaft structure made of rubber material, and the air guide cylinder (410) is in the shape of a metal rigid sleeve, and the inner side of the air guide cylinder (410) is a spiral cavity.

7. The reinforced gas spring with protective function according to claim 1, characterized in that: The bottom surface of the rotating sleeve seat (320) is provided with a plurality of through holes for allowing the airflow inside the connecting seat (310) to pass through and guide the airflow along the spiral shaft (420) into the interior of the rotating sleeve (411).

8. The reinforced gas spring with protective function according to claim 1, characterized in that: The pressure relief cylinder (500) is connected to the air flow channel (203). When the internal pressure of the gas spring exceeds a preset value, the pressure relief valve head (511) opens, causing the floating plug (510) to move downward, releasing excess gas and preventing structural damage caused by excessive internal pressure.

Images