Hydraulic damping cylinder for bidirectional buffered slide rail
By designing a hydraulic damping cylinder for a bidirectional buffer slide rail, combined with a buffer spring, pressure sensor, and airbag, bidirectional buffering of the slide rail is achieved, solving the problems of limited unidirectional buffering effect and damage at the fixing point in the existing technology, and improving the stability and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIEYANG LONGSHENG HARDWARE CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-06-23
AI Technical Summary
Existing hydraulic damping cylinders for slide rails are mostly unidirectional buffers, with limited buffering effect and cannot be flexibly adjusted according to load size and running speed. They are prone to loosening after long-term use and can cause damage to the fixed parts during impact.
A bidirectional buffer hydraulic damping cylinder for slide rails was designed. By combining the hydraulic damping cylinder body, sliding seat, buffer spring, pressure sensor and airbag, bidirectional buffering is achieved. The buffer spring provides initial buffering, the pressure sensor monitors the force, and the airbag provides reverse buffering force. In conjunction with the hydraulic damping of the hydraulic damping cylinder, the expansion degree of the airbag is adjusted to adjust the buffering force.
It improves the stability and safety of slide rail operation, reduces damage caused by impact, and enables flexible buffer adjustment according to load and speed, thereby enhancing the operational stability and safety of the equipment.
Smart Images
Figure CN224397002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of slide rail buffer devices, specifically a hydraulic damping cylinder for bidirectional buffer slide rails. Background Technology
[0002] As a key structure for enabling relative sliding of components, the smoothness and safety of the slide rail directly affect the overall performance and service life of the equipment. To reduce vibration and collision caused by start-stop, load changes, or external impacts during the sliding process, a buffer device is usually required in the slide rail system. Hydraulic damping cylinders, with their excellent damping characteristics and buffering effect, have become a commonly used component in slide rail buffer devices.
[0003] However, existing hydraulic damping cylinders for slide rails still have many shortcomings in practical applications. Most traditional hydraulic damping cylinders can only achieve unidirectional buffering, and the buffering effect of unidirectional buffering is limited, thus failing to meet the requirements for use on slide rails. At the same time, most existing hydraulic damping cylinders are fixed to the slide rail, meaning that existing hydraulic damping cylinders do not have a certain buffering distance. When subjected to impact, the fixed point between the hydraulic damping cylinder and the slide rail will be directly impacted, which will inevitably loosen over time. In addition, the buffering force is mostly fixed and cannot be flexibly adjusted according to different working conditions such as the load size and running speed of the slide rail.
[0004] In view of this, we propose a hydraulic damping cylinder for a bidirectional buffer slide rail. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a hydraulic damping cylinder for a bidirectional buffer slide rail.
[0006] The technical solution of this utility model is:
[0007] A bidirectional buffer slide rail hydraulic damping cylinder includes a hydraulic damping cylinder body, a hydraulic damping cylinder base fixedly mounted at the bottom of the hydraulic damping cylinder body, a sliding seat slidably mounted at the bottom of the hydraulic damping cylinder base, a second slider slidably connected inside the sliding seat, the bottom of the hydraulic damping cylinder base and the top of the second slider fixedly connected, a movable sleeve slidably mounted on the piston rod of the hydraulic damping cylinder body, a buffer spring fixedly mounted between the inner wall of the left end of the movable sleeve and the piston rod, an outer plate fixedly mounted on the outer wall of the left end face of the movable sleeve, a pressure sensor mounted on the left side face of the outer plate, a vertical plate fixedly mounted near the right side of the top of the sliding seat, and an airbag mounted between the vertical plate and the hydraulic damping cylinder body.
[0008] In use, the system incorporates a hydraulic damping cylinder body, a hydraulic damping cylinder base, a sliding seat, a second slider, a movable sleeve, a buffer spring, an outer plate, a pressure sensor, a vertical plate, and an air bladder, achieving a bidirectional buffering function. When the outer plate is subjected to external force, the buffer spring provides initial buffering, while the pressure sensor monitors the pressure in real time. As the piston rod of the hydraulic damping cylinder body moves, the air bladder provides buffering force from the other side. Combined with the hydraulic damping of the hydraulic damping cylinder, this effectively enhances the bidirectional buffering effect during slide rail operation, reduces damage from impacts, and improves the stability and safety of the equipment.
[0009] As a preferred technical solution, an air pump is fixedly installed on the top of the sliding seat and on the right side of the vertical plate. The air pump is connected to the inside of the airbag through an inflation pipe, and a pressure-holding valve is installed on the inflation pipe. By connecting the inflation pipe to the airbag and installing the pressure-holding valve, the air pump can be used to inflate the airbag according to actual usage needs, thereby adjusting the degree of airbag expansion and changing the buffering force of the airbag on the hydraulic damping cylinder body. The pressure-holding valve can ensure stable air pressure inside the airbag.
[0010] As a preferred technical solution, an exhaust pipe is installed on the inflation tube, and an exhaust valve is installed on the exhaust pipe. By providing an exhaust pipe and exhaust valve on the inflation tube, the gas inside the airbag can be discharged through the exhaust pipe by opening the exhaust valve. When the airbag is compressed, the exhaust valve can be opened simultaneously, which can further improve the cushioning effect of the airbag.
[0011] As a preferred technical solution, a fixed seat is provided at the bottom right end of the sliding seat, and a first slider is slidably installed inside the fixed seat. The bottom right end of the sliding seat is fixedly connected to the top of the first slider, and a support frame is fixedly installed at the bottom left end of the sliding seat. A support wheel is rotatably installed inside the support frame. Through the arrangement of the fixed seat, the first slider, the support frame, and the support wheel, the sliding seat can slide on the fixed seat via the first slider, while the support wheel provides support to the left end of the sliding seat, ensuring the stability of the sliding seat during movement.
[0012] As a preferred technical solution, both the first slider and the second slider have T-shaped cross sections. The T-shaped structure and the sliding groove can effectively limit the movement direction of the slider and prevent the slider from falling off or deviating during the sliding process. The top of the fixed seat and the sliding seat are respectively provided with a first sliding groove and a second sliding groove that are slidably connected to the top of the first slider and the second slider, so as to ensure that the sliding of the first slider in the fixed seat and the second slider in the sliding seat is more stable and reliable.
[0013] As a preferred technical solution, an adjusting screw threadedly connected to the first slider is rotatably installed inside the first slide groove, and an adjusting motor with its output shaft coaxially fixed to the adjusting screw is installed at the right end of the fixed seat. By driving the adjusting screw to rotate through the adjusting motor, the first slider can slide within the fixed seat, thereby adjusting the position of the sliding seat. When the hydraulic damping cylinder body is compressed, the adjusting screw can slowly move the hydraulic damping cylinder body to the right, which can improve the buffering effect.
[0014] As a preferred technical solution, a side plate is fixedly installed on the bottom of both the front and rear sides of the fixing base, and each side plate has several fixing holes. The fixing holes allow the fixing base to be securely installed on the slide rail.
[0015] As a preferred technical solution, a fixing block is fixedly installed at both ends of the airbag, and the two fixing blocks are respectively fixedly connected to the right end of the hydraulic damping cylinder body and the left side of the vertical plate. By setting fixing blocks at both ends of the airbag and fixing them to the hydraulic damping cylinder body and the vertical plate respectively, the connection between the airbag and both is made more secure and reliable.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This invention achieves bidirectional buffering by incorporating a hydraulic damping cylinder body, a hydraulic damping cylinder base, a sliding seat, a second slider, a movable sleeve, a buffer spring, an outer plate, a pressure sensor, a vertical plate, and an air bladder. When the outer plate is subjected to external force, the buffer spring provides initial buffering, while the pressure sensor monitors the pressure in real time. As the piston rod of the hydraulic damping cylinder body moves, the air bladder provides buffering force from the other side. Combined with the hydraulic damping of the hydraulic damping cylinder, this effectively enhances the bidirectional buffering effect during slide rail operation, reduces damage from impacts, and improves the stability and safety of equipment operation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a front view schematic diagram of the overall structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the hydraulic damping cylinder base and sliding seat in this utility model;
[0021] Figure 4 This is a schematic diagram of the internal structure of the fixing base in this utility model;
[0022] The meanings of the labels in the diagram are as follows:
[0023] 1. Hydraulic damping cylinder body; 10. Movable sleeve; 11. Outer plate; 12. Pressure sensor; 13. Buffer spring; 2. Hydraulic damping cylinder base; 3. Sliding seat; 30. Support frame; 31. Support wheel; 32. Vertical plate; 33. Second slide groove; 34. Second slider; 4. Fixed seat; 40. Side plate; 41. Fixing hole; 42. First slide groove; 43. Adjusting screw; 44. Adjusting motor; 45. First slider; 5. Airbag; 50. Fixed block; 51. Inflation pipe; 52. Air pump; 53. Exhaust valve; 54. Exhaust pipe; 55. Pressure holding valve. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-4 This utility model provides a technical solution:
[0026] A bidirectional buffer hydraulic damping cylinder for a slide rail includes a hydraulic damping cylinder body 1. A hydraulic damping cylinder base 2 is fixedly installed at the bottom of the hydraulic damping cylinder body 1. A sliding seat 3 is slidably provided at the bottom of the hydraulic damping cylinder base 2. A second slider 34 is slidably connected inside the sliding seat 3. The bottom of the hydraulic damping cylinder base 2 is fixedly connected to the top of the second slider 34. A movable sleeve 10 is slidably installed on the piston rod of the hydraulic damping cylinder body 1. A buffer spring 13 is fixedly installed between the inner wall of the left end of the movable sleeve 10 and the piston rod. An outer plate 11 is fixedly installed on the outer wall of the left end face of the movable sleeve 10. A pressure sensor 12 is installed on the left side face of the outer plate 11. A vertical plate 32 is fixedly installed near the right side of the top of the sliding seat 3. An air bladder 5 is installed between the vertical plate 32 and the hydraulic damping cylinder body 1.
[0027] In use, the system incorporates a hydraulic damping cylinder body 1, a hydraulic damping cylinder base 2, a sliding seat 3, a second slider 34, a movable sleeve 10, a buffer spring 13, an outer plate 11, a pressure sensor 12, a vertical plate 32, and an airbag 5, achieving a bidirectional buffering function. When the outer plate 11 is subjected to external force, the buffer spring 13 provides initial buffering, while the pressure sensor 12 monitors the pressure in real time. When the piston rod of the hydraulic damping cylinder body 1 moves, the airbag 5 provides buffering force from the other side. Combined with the hydraulic damping of the hydraulic damping cylinder, this effectively enhances the bidirectional buffering effect during slide rail operation, reduces damage caused by impacts, and improves the stability and safety of equipment operation.
[0028] In a preferred embodiment, an air pump 52 is fixedly installed on the top of the sliding seat 3 and on the right side of the vertical plate 32. The air pump 52 is connected to the inside of the airbag 5 through an inflation pipe 51, and a pressure holding valve 55 is installed on the inflation pipe 51. By connecting the inflation pipe 51 to the airbag 5 and installing the pressure holding valve 55, air can be pumped into the airbag 5 according to actual usage needs, adjusting the degree of inflation of the airbag 5, thereby changing the buffering force of the airbag 5 on the hydraulic damping cylinder body 1. The pressure holding valve 55 can ensure the stability of the air pressure inside the airbag 5.
[0029] In a preferred embodiment, an exhaust pipe 54 is installed on the inflation tube 51, and an exhaust valve 53 is installed on the exhaust pipe 54. By providing an exhaust pipe 54 and an exhaust valve 53 on the inflation tube 51, the gas inside the airbag 5 can be discharged through the exhaust pipe 54 by opening the exhaust valve 53. When the airbag 5 is compressed, the exhaust valve 53 receives a pressure signal from the pressure sensor 12, thereby automatically opening the exhaust valve 53, which can further improve the cushioning effect of the airbag 5.
[0030] In a preferred embodiment, a fixed seat 4 is provided at the bottom right end of the sliding seat 3. A first slider 45 is slidably installed inside the fixed seat 4. The bottom right end of the sliding seat 3 is fixedly connected to the top of the first slider 45. A support frame 30 is fixedly installed at the bottom left end of the sliding seat 3. A support wheel 31 is rotatably installed inside the support frame 30. Through the arrangement of the fixed seat 4, the first slider 45, the support frame 30, and the support wheel 31, the sliding seat 3 can slide on the fixed seat 4 via the first slider 45. At the same time, the support wheel 31 supports the left end of the sliding seat 3, ensuring the stability of the sliding seat 3 during movement.
[0031] As a preferred embodiment, both the first slider 45 and the second slider 34 have T-shaped cross sections. The T-shaped structure and the sliding groove can effectively limit the movement direction of the slider and prevent the slider from falling off or deviating during the sliding process. The top of the fixed seat 4 and the sliding seat 3 are respectively provided with a first sliding groove 42 and a second sliding groove 33 that are slidably connected to the top of the first slider 45 and the second slider 34, ensuring that the sliding of the first slider 45 in the fixed seat 4 and the second slider 34 in the sliding seat 3 is more stable and reliable.
[0032] In a preferred embodiment, an adjusting screw 43, threadedly connected to the first slider 45, is rotatably mounted within the first slide groove 42. An adjusting motor 44, with its output shaft coaxially fixed to the adjusting screw 43, is mounted at the right end of the fixed seat 4. By driving the adjusting screw 43 to rotate via the adjusting motor 44, the first slider 45 can slide within the fixed seat 4, thereby adjusting the position of the sliding seat 3. Furthermore, when the hydraulic damping cylinder body 1 is compressed, the adjusting screw 43 can slowly move the hydraulic damping cylinder body 1 to the right, improving the buffering effect.
[0033] In a preferred embodiment, a side plate 40 is fixedly installed on the bottom of both the front and rear sides of the fixed base 4, and each side plate 40 has several fixing holes 41. The fixed base 4 can be securely installed on the slide rail using the fixing holes 41.
[0034] In a preferred embodiment, a fixing block 50 is fixedly installed at both ends of the airbag 5, and the two fixing blocks 50 are fixedly connected to the right end of the hydraulic damping cylinder body 1 and the left side of the vertical plate 32, respectively. By setting fixing blocks 50 at both ends of the airbag 5 and fixing them to the hydraulic damping cylinder body 1 and the vertical plate 32, the connection between the airbag 5 and the two is made more secure and reliable.
[0035] In use, when the slide rail of this utility model drives the movement of related components and causes the outer plate 11 to be impacted by an external force, the external force first acts on the outer plate 11. The outer plate 11 then transmits the force to the movable sleeve 10, which slides on the piston rod. At this time, the buffer spring 13 between the movable sleeve 10 and the piston rod is compressed, utilizing the elastic deformation of the spring for initial buffering and reducing the initial impact force. Simultaneously, the pressure sensor 12 on the outer plate 11 monitors the applied pressure in real time, providing data support for monitoring and adjusting the buffering process.
[0036] As the external force continues to act, the piston rod of the hydraulic damping cylinder body 1 is pushed, generating hydraulic damping force inside the hydraulic damping cylinder body 1, further buffering the impact force. During this process, the hydraulic damping cylinder body 1 moves towards the vertical plate 32 due to the force, compressing the airbag 5 located between the hydraulic damping cylinder body 1 and the vertical plate 32. The airbag 5 generates a reverse elastic force under compression, providing buffering force to the hydraulic damping cylinder body 1 from the other side. This, combined with the hydraulic damping of the hydraulic damping cylinder, forms a bidirectional buffer, effectively offsetting the impact force and significantly improving the bidirectional buffering effect during the operation of the slide rail, reducing damage caused by impact.
[0037] Regarding the adjustment of the cushioning force, the air pump 52 can inflate the airbag 5 through the inflation pipe 51. The pressure holding valve 55 on the inflation pipe 51 can ensure the stability of the air pressure inside the airbag 5. By adjusting the inflation amount, the degree of expansion of the airbag 5 can be changed, thereby adjusting the cushioning force of the airbag 5 on the hydraulic damping cylinder body 1. If it is necessary to reduce the cushioning force, the exhaust valve 53 on the exhaust pipe 54 can be opened to discharge the gas inside the airbag 5. The exhaust valve 53 can be opened simultaneously when the airbag 5 is squeezed, which can further improve the cushioning effect of the airbag 5.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hydraulic damping cylinder for a bidirectional buffer slide rail, characterized in that: The system includes a hydraulic damping cylinder body (1), a hydraulic damping cylinder base (2) fixedly installed at the bottom of the hydraulic damping cylinder body (1), a sliding seat (3) slidably installed at the bottom of the hydraulic damping cylinder base (2), a second slider (34) slidably connected inside the sliding seat (3), the bottom of the hydraulic damping cylinder base (2) and the top of the second slider (34) fixedly connected, a movable sleeve (10) slidably installed on the piston rod of the hydraulic damping cylinder body (1), a buffer spring (13) fixedly installed between the inner wall of the left end of the movable sleeve (10) and the piston rod, an outer plate (11) fixedly installed on the outer wall of the left end face of the movable sleeve (10), a pressure sensor (12) installed on the left side face of the outer plate (11), a vertical plate (32) fixedly installed near the right side of the top of the sliding seat (3), and an airbag (5) installed between the vertical plate (32) and the hydraulic damping cylinder body (1).
2. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 1, characterized in that: An air pump (52) is fixedly installed on the top of the sliding seat (3) and on the right side of the vertical plate (32). The air pump (52) is connected to the inside of the airbag (5) through the inflation pipe (51). A pressure holding valve (55) is installed on the inflation pipe (51).
3. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 2, characterized in that: An exhaust pipe (54) is installed on the inflation pipe (51), and an exhaust valve (53) is installed on the exhaust pipe (54).
4. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 3, characterized in that: The bottom right end of the sliding seat (3) is provided with a fixed seat (4), and a first slider (45) is slidably installed in the fixed seat (4). The bottom right end of the sliding seat (3) is fixedly connected to the top of the first slider (45). A support frame (30) is fixedly installed at the bottom left end of the sliding seat (3), and a support wheel (31) is rotatably installed inside the support frame (30).
5. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 4, characterized in that: The first slider (45) and the second slider (34) both have a T-shaped cross section. The top of the fixed seat (4) and the sliding seat (3) are respectively provided with a first groove (42) and a second groove (33) that are slidably connected to the top of the first slider (45) and the second slider (34).
6. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 5, characterized in that: An adjusting screw (43) that is threadedly connected to the first slider (45) is rotatably installed in the first slide groove (42), and an adjusting motor (44) whose output shaft is coaxially fixed with the adjusting screw (43) is installed at the right end of the fixed seat (4).
7. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 6, characterized in that: The bottom of the front and rear sides of the fixed base (4) is fixedly installed with a side plate (40), and each side plate (40) has a number of fixing holes (41).
8. The hydraulic damping cylinder for the bidirectional buffer slide rail as described in claim 7, characterized in that: A fixing block (50) is fixedly installed at both ends of the airbag (5). The two fixing blocks (50) are fixedly connected to the right end of the hydraulic damping cylinder body (1) and the left side of the vertical plate (32), respectively.