CN216045164U - Three-section lockable gas spring - Google Patents
Three-section lockable gas spring Download PDFInfo
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- CN216045164U CN216045164U CN202121659347.9U CN202121659347U CN216045164U CN 216045164 U CN216045164 U CN 216045164U CN 202121659347 U CN202121659347 U CN 202121659347U CN 216045164 U CN216045164 U CN 216045164U
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Abstract
The utility model discloses a three-section lockable gas spring, which comprises an outer cylinder barrel, wherein an inner cylinder barrel which moves forwards is arranged inside the outer cylinder barrel, a hollow piston rod which moves forwards is arranged inside the inner cylinder barrel, a control rod which moves forwards is arranged inside the hollow piston rod, a first piston assembly is connected on the hollow piston rod inside the inner cylinder barrel, a first valve rod assembly is arranged inside the first piston assembly, the control rod is arranged at the front side of the first valve rod assembly, a second piston assembly is connected on the inner cylinder barrel inside the outer cylinder barrel, the three-section lockable gas spring can stay at any position in an ultra-long stroke under the control of the control rod, required supporting force is provided according to the pressure of high-pressure nitrogen, and corresponding sealing elements, an O-shaped ring in the piston assembly and an O-shaped ring in a floating piston are arranged in the outer cylinder barrel and the inner cylinder barrel, the sealing function between different cavities inside and outside the inner cylinder barrel and inside the outer cylinder barrel is achieved.
Description
Technical Field
The utility model belongs to the technical field of gas springs, and particularly relates to a three-section lockable gas spring.
Background
The lockable gas spring has the functions of supporting and adjusting the height or angle, can stop at any position in the stroke by adjusting the handle switch, is easy to operate and comfortable to use, and is widely applied to automobiles, medical instruments, furniture and seat equipment. In many application occasions, a longer stroke is needed under the same mounting distance of the gas spring, and the common lockable gas spring cannot meet the requirement. The utility model relates to a three-section lockable gas spring, which solves the application requirement of the lockable gas spring on an ultra-long stroke.
SUMMERY OF THE UTILITY MODEL
The present invention provides a three-stage lockable gas spring to solve the problem of the prior art that the conventional lockable gas spring cannot satisfy an ultra-long stroke.
In order to achieve the purpose, the utility model provides the following technical scheme: a three-section lockable gas spring comprises an outer cylinder, wherein an inner cylinder moving forwards is arranged inside the outer cylinder, a hollow piston rod moving forwards is arranged inside the inner cylinder, a control rod moving forwards is arranged inside the hollow piston rod, a first piston assembly is connected onto the hollow piston rod inside the inner cylinder, a first valve rod assembly is arranged inside the first piston assembly, the control rod is arranged on the front side of the first valve rod assembly, a second piston assembly is connected onto the inner cylinder inside the outer cylinder, a first floating piston is further arranged at the front end of the second piston assembly, a spring is arranged inside the second piston assembly, a second valve rod assembly is arranged in the second piston assembly at the front side of the spring, the inner cylinder is arranged on the front side of the second valve rod assembly, and a second floating piston is further arranged at the front end of the second piston assembly, the rear end of the inner cylinder barrel is provided with a supporting sleeve.
Preferably, an oil cavity is formed between the first piston assembly and the inner cylinder barrel, hydraulic oil is arranged in the oil cavity, a first damping hole is formed in the first piston assembly, and the first damping hole is blocked through the first valve rod assembly.
Preferably, an oil cavity is formed between the outer cylinder barrel and the inner cylinder barrel, hydraulic oil is arranged in the oil cavity, a second damping hole is formed in the second piston assembly, and the second damping hole is blocked through the second valve rod assembly.
Preferably, a first sealing element is sleeved on a hollow piston rod in the inner cylinder barrel, a first guide sleeve is sleeved on the hollow piston rod on the front side of the first sealing element, a second sealing element is sleeved on the inner cylinder barrel in the outer cylinder barrel, and a second guide sleeve is sleeved on the inner cylinder barrel on the front side of the second sealing element.
Preferably, high-pressure nitrogen is arranged between the first sealing element and the first floating piston, and high-pressure nitrogen is also arranged between the second sealing element and the second floating piston.
Compared with the prior art of gas springs, the utility model provides a three-section lockable gas spring which has the following beneficial effects:
the utility model solves the application requirement of a lockable gas spring on an ultra-long stroke, and mainly comprises a hollow piston rod, a control rod, a sealing piece, an outer cylinder barrel, a floating piston, a valve rod component, a sealing piece, hydraulic oil, high-pressure nitrogen, an outer cylinder barrel, a spring, a supporting sleeve, a guide sleeve and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:
FIG. 1 is a schematic view of a three-section lockable gas spring according to the present invention;
FIG. 2 is a schematic perspective view of a three-section lockable gas spring according to the present invention;
in the figure: 1. a hollow piston rod; 2. a control lever; 3. a first guide sleeve; 4. an inner cylinder barrel; 5. A first floating piston; 6. a first shutter lever assembly; 7. a second guide sleeve; 8. hydraulic oil; 9. An outer cylinder barrel; 10. a second shutter lever assembly; 11. a second piston assembly; 12. a spring; 13. A first seal member; 14. high pressure nitrogen; 15. a first piston assembly; 16. a first orifice; 17. a second seal member; 18. a second floating piston; 19. a support sleeve; 20. a second orifice.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a three-section lockable gas spring comprises an outer cylinder 9, an inner cylinder 4 moving forwards is arranged inside the outer cylinder 9, a hollow piston rod 1 moving forwards is arranged inside the inner cylinder 4, a control rod 2 moving forwards is arranged inside the hollow piston rod 1, a first piston assembly 15 is connected on the hollow piston rod 1 inside the inner cylinder 4, a first valve rod assembly 6 is arranged inside the first piston assembly 15, the control rod 2 is arranged at the front side of the first valve rod assembly 6, a second piston assembly 11 is connected on the inner cylinder 4 inside the outer cylinder 9, a first floating piston 5 is further arranged at the front end of the second piston assembly 11, a spring 12 is arranged inside the second piston assembly 11, a second valve rod assembly 10 is arranged in the second piston assembly 11 at the front side of the spring 12, the inner cylinder 4 is arranged at the front side of the second valve rod assembly 10, the front end of the second piston assembly 11 is also provided with a second floating piston 18, and the rear end of the inner cylinder 4 is provided with a support sleeve 19.
An oil cavity is formed between the first piston assembly 15 and the inner cylinder barrel 4, hydraulic oil 8 is arranged in the oil cavity, a first damping hole 16 is formed in the first piston assembly 15, the first damping hole 16 is separated through the first valve rod assembly 6, and closing of hydraulic oil 8 flow channels in two cavities of the inner cylinder barrel 4 through the first valve rod assembly 6 is facilitated, so that the air spring piston rod is kept to stay at the position, the oil cavity is formed between the outer cylinder barrel 9 and the inner cylinder barrel 4, the hydraulic oil 8 is arranged in the oil cavity, a second damping hole 20 is formed in the second piston assembly 11, the second damping hole 20 is separated through the second valve rod assembly 10, closing of the hydraulic oil 8 flow channels in two cavities of the inner cylinder barrel 4 through the second valve rod assembly 10 is facilitated, and the air spring piston rod is kept to stay at the position.
The cover is equipped with first sealing member 13 on the hollow piston rod 1 in the inner cylinder 4, and the cover is equipped with first uide bushing 3 on the hollow piston rod 1 of first sealing member 13 front side, and the cover is equipped with second sealing member 17 on the inner cylinder 4 in the outer cylinder 9, and the cover is equipped with second uide bushing 7 on the inner cylinder 4 of second sealing member 17 front side, plays the inside and outside sealed effect between the different chambeies in the inner cylinder 4 and the outer cylinder 9.
High-pressure nitrogen gas 14 is provided between the first seal 13 and the first floating piston 5, and high-pressure nitrogen gas 14 is also provided between the second seal 17 and the second floating piston 18, so that a required supporting force is provided according to the pressure of the high-pressure nitrogen gas 14.
The working principle and the using process of the utility model are as follows: after the three-section lockable gas spring is installed, the control rod 2 at the front end of the hollow piston rod 1 is pressed down to drive the first valve rod assembly 6 to move, hydraulic oil 8 flow channels in two cavities of the inner cylinder barrel 4 in the first piston assembly 15 are opened, the first piston assembly 15 drives the hollow piston rod 1, under the balance action of internal and external forces of the inner cylinder barrel 4, the gas spring extends or compresses in a stroke range in the inner cylinder barrel 4, the control rod 2 is released, and the pressure in the cylinder barrel enables the first valve rod assembly 6 to close the hydraulic oil 8 flow channels in the two cavities of the inner cylinder barrel 4, so that the piston rod of the gas spring is kept at the position; when the gas spring needs to be compressed or extended within a longer stroke range, the control rod 2 controls the first valve rod component 6 to open a flow passage and continuously move to the tail end of the inner cylinder barrel 4, contacts and presses the second valve rod component 10 down, so that the second valve rod component opens hydraulic oil 8 flow passages of two cavities of the outer cylinder barrel 9 in the second piston component 11, the second piston component 11 contacts the supporting sleeve 19, the inner cylinder barrel 4, the hollow piston rod 1 and the second piston component 11 are driven, under the balance action of the inner force and the outer force of the cylinder barrel, the air spring extends or compresses in the stroke range of the outer cylinder barrel 9, the control rod 2 is loosened, the pressure in the cylinder barrel enables the first valve rod assembly 6 to close the hydraulic oil 8 flow channels in the two cavities of the inner cylinder barrel 4, the second valve rod assembly 10 simultaneously closes the hydraulic oil 8 flow channels in the two cavities of the outer cylinder barrel 9 under the action of the spring 12, and therefore the piston rod of the air spring is kept to stay at the position; the first floating piston 5 and the second floating piston 18 respectively isolate an oil chamber and a nitrogen chamber of the inner cylinder 4 and the outer cylinder 9, and the high-pressure nitrogen 14 generates the supporting force required by the gas spring.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a syllogic lockable gas spring, includes outer cylinder (9), its characterized in that: an inner cylinder barrel (4) moving forwards is arranged in the outer cylinder barrel (9), a hollow piston rod (1) moving forwards is arranged in the inner cylinder barrel (4), a control rod (2) moving forwards is arranged in the hollow piston rod (1), a first piston assembly (15) is connected onto the hollow piston rod (1) in the inner cylinder barrel (4), a first valve rod assembly (6) is arranged in the first piston assembly (15), the control rod (2) is arranged on the front side of the first valve rod assembly (6), a second piston assembly (11) is connected onto the inner cylinder barrel (4) in the outer cylinder barrel (9), a first floating piston (5) is further arranged at the front end of the second piston assembly (11), a spring (12) is arranged in the second piston assembly (11) in front of the spring (12), and a second valve rod assembly (10) is arranged in the second piston assembly (11) in front of the spring (12), the inner cylinder barrel (4) is arranged on the front side of the second valve rod assembly (10), a second floating piston (18) is further arranged at the front end of the second piston assembly (11), and a supporting sleeve (19) is arranged at the rear end of the inner cylinder barrel (4).
2. The three-piece lockable gas spring as claimed in claim 1, wherein: an oil cavity is formed between the first piston assembly (15) and the inner cylinder barrel (4), hydraulic oil (8) is arranged in the oil cavity, a first damping hole (16) is formed in the first piston assembly (15), and the first damping hole (16) is blocked through the first valve rod assembly (6).
3. The three-piece lockable gas spring as claimed in claim 2, wherein: an oil cavity is formed between the outer cylinder barrel (9) and the inner cylinder barrel (4), hydraulic oil (8) is arranged in the oil cavity, a second damping hole (20) is formed in the second piston assembly (11), and the second damping hole (20) is blocked through the second valve rod assembly (10).
4. The three-piece lockable gas spring as claimed in claim 2, wherein: the novel oil cylinder is characterized in that a first sealing element (13) is sleeved on a hollow piston rod (1) in the inner cylinder barrel (4), a first guide sleeve (3) is sleeved on the hollow piston rod (1) on the front side of the first sealing element (13), a second sealing element (17) is sleeved on the inner cylinder barrel (4) in the outer cylinder barrel (9), and a second guide sleeve (7) is sleeved on the inner cylinder barrel (4) on the front side of the second sealing element (17).
5. The three-piece lockable gas spring as claimed in claim 4, wherein: high-pressure nitrogen (14) is arranged between the first sealing element (13) and the first floating piston (5), and high-pressure nitrogen (14) is also arranged between the second sealing element (17) and the second floating piston (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121659347.9U CN216045164U (en) | 2021-07-21 | 2021-07-21 | Three-section lockable gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121659347.9U CN216045164U (en) | 2021-07-21 | 2021-07-21 | Three-section lockable gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045164U true CN216045164U (en) | 2022-03-15 |
Family
ID=80617754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121659347.9U Active CN216045164U (en) | 2021-07-21 | 2021-07-21 | Three-section lockable gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216045164U (en) |
-
2021
- 2021-07-21 CN CN202121659347.9U patent/CN216045164U/en active Active
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