CN110159698B - Safe and mute gas spring - Google Patents
Safe and mute gas spring Download PDFInfo
- Publication number
- CN110159698B CN110159698B CN201910522135.7A CN201910522135A CN110159698B CN 110159698 B CN110159698 B CN 110159698B CN 201910522135 A CN201910522135 A CN 201910522135A CN 110159698 B CN110159698 B CN 110159698B
- Authority
- CN
- China
- Prior art keywords
- piston rod
- inner cylinder
- cylinder barrel
- piston
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims abstract description 39
- 239000010687 lubricating oil Substances 0.000 claims abstract description 13
- 230000030279 gene silencing Effects 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007790 scraping Methods 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/062—Bi-tubular units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/066—Units characterised by the partition, baffle or like element
- F16F9/067—Partitions of the piston type, e.g. sliding pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3278—Details for lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
- F16F9/437—Drainage arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/04—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/48—Thermal insulation
Abstract
The invention discloses a safe and mute gas spring which comprises an outer cylinder barrel, an inner cylinder barrel, a piston rod and a connector, wherein the bottom of the inner cylinder barrel is provided with a gas cavity, high-pressure nitrogen is filled in the gas cavity, a limiting block is arranged in the inner cylinder barrel, two ends of the limiting block are respectively connected with the piston rod and the inner wall of the inner cylinder barrel, the limiting block, the piston rod and the piston form a mute cavity, a plurality of return springs are arranged in the mute cavity, lubricating oil is filled in the outer cylinder barrel, and a plurality of drain holes are arranged at positions corresponding to the mute cavity in the outer cylinder barrel; the top of the inner cylinder is provided with a sealing sleeve, the joint of the sealing sleeve and the piston rod is provided with an annular groove, and the upper end and the lower end of the annular groove are respectively provided with an elastic scraping blade; the gas spring is safe to use, has good air tightness, avoids the conditions of explosion, air leakage and the like of the gas spring, has good silencing and heat conducting effects, and realizes low-noise operation.
Description
Technical Field
The invention relates to a gas spring, in particular to a safe and mute gas spring.
Background
The gas spring is an industrial fitting with functions of supporting, buffering, braking, height adjustment, angle adjustment and the like. Due to the fundamental differences in principle, gas springs have significant advantages over conventional springs: the speed is relatively slow, the dynamic force is not changed much (generally within 1:1.2), and the control is easy.
The existing gas spring has the following defects: when the stress disappears or the stress is overloaded, the situation of unbalanced stress occurs, and if the gas spring is invalid, the piston and the piston rod directly rush out and damage articles, and the surrounding personnel are seriously injured; the existing gas spring is usually plugged at the opening of the pressure pipe by adopting a sealing ring, and along with long-time use, dry friction is easy to occur between the sealing ring and the piston rod, so that the friction force between the piston rod and the sealing ring is large when the piston rod stretches and contracts, and noise is easy to generate; in addition, the gas spring is not provided with a limiting mechanism, so that the gas leakage and locking of the common gas spring in the prior market can be realized under the condition of repeated expansion and contraction, and the problem of injuring people can be easily caused.
Disclosure of Invention
The invention aims to provide a safe and mute gas spring to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a safe and mute gas spring, includes outer cylinder, interior cylinder, piston rod and connector, piston rod bottom and piston connection, the piston is located interior cylinder, interior cylinder bottom is equipped with the air cavity, is filled with high-pressure nitrogen gas in the air cavity, be equipped with annular stopper in the interior cylinder, stopper both ends are connected with piston rod and interior cylinder inner wall respectively, stopper, piston rod and piston form the amortization chamber, are equipped with a plurality of reset spring in the amortization chamber, and reset spring both ends are connected with piston and stopper respectively, outer cylinder overcoat is outside interior cylinder, and outer cylinder intussuseption is filled with lubricating oil, and outer cylinder is equipped with a plurality of drain holes with amortization chamber corresponding position; the sealing sleeve is arranged at the top of the inner cylinder, an annular groove is arranged at the joint of the sealing sleeve and the piston rod, elastic scraping blades are arranged at the upper end and the lower end of the annular groove, liquid inlet channels are arranged at the two sides of the sealing sleeve, liquid inlet holes are formed in the positions, corresponding to the liquid inlet channels, of the inner cylinder, and one end of each liquid inlet hole extends into the outer cylinder.
As a further scheme of the invention: the bottom of the inner cylinder is provided with a vent hole, the vent hole is of an inverted cone structure, a sealing plug is arranged in the vent hole, and a sealing ring is arranged at the joint of the sealing plug and the vent hole.
As a further scheme of the invention: the surface of the sealing plug is provided with a spiral air escape groove, and the bottom of the sealing plug is provided with a circular pull ring.
As a further scheme of the invention: the connector is connected with the top of the piston rod, and the top of the connector is hinged with a universal head.
As a further scheme of the invention: the top of the sealing sleeve is provided with a limiting sleeve, a plurality of limiting holes are formed in the side face of the limiting sleeve, and locking screws are arranged in the limiting holes.
Compared with the prior art, the invention has the beneficial effects that: the gas spring is safe to use, has good air tightness, avoids the conditions of explosion, air leakage and the like of the gas spring, has good silencing and heat conducting effects, and realizes low-noise operation.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the present invention.
Fig. 3 is a schematic view of the structure of the sealing plug according to the invention.
In the figure: the device comprises a 1-outer cylinder barrel, a 2-piston rod, a 3-sealing sleeve, a 4-pull ring, a 5-limit sleeve, a 6-connector, a 7-universal head, an 8-inner cylinder barrel, a 9-piston, a 10-silencing cavity, an 11-limit block, a 12-annular groove, a 13-scraping blade, a 14-limit hole, a 15-locking screw, a 16-liquid inlet channel, a 17-reset spring, a 18-sealing plug, a 19-vent hole and a 20-vent groove. 21-air cavity.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, in the embodiment of the invention, a safe and mute gas spring comprises an outer cylinder 1, an inner cylinder 8, a piston 9, a piston rod 2 and a connector 6, wherein the bottom of the piston rod 2 is connected with the piston 9, the piston 9 is positioned in the inner cylinder 8, an air cavity 21 is arranged at the bottom of the inner cylinder 8, high-pressure nitrogen is filled in the air cavity 21, an annular limiting block 11 is arranged in the inner cylinder 8, two ends of the limiting block 11 are respectively connected with the inner walls of the piston rod 2 and the inner cylinder 8, the limiting block 11, the piston rod 2 and the piston 9 form a mute cavity 10, a plurality of return springs 17 are arranged in the mute cavity 10, two ends of the return springs 17 are respectively connected with the piston 9 and the limiting block 11, the outer cylinder 1 is sleeved outside the inner cylinder 8, lubricating oil is filled in the outer cylinder 1, and a plurality of drain holes are arranged at positions corresponding to the mute cavity 10; the sealing sleeve 3 is arranged at the top of the inner cylinder 8, an annular groove 12 is arranged at the joint of the sealing sleeve 3 and the piston rod 2, elastic scraping blades 13 are arranged at the upper end and the lower end of the annular groove 12, liquid inlet channels 16 are arranged at the two sides of the sealing sleeve 3, liquid inlet holes are formed in the positions, corresponding to the liquid inlet channels 16, of the inner cylinder 8, and one end of each liquid inlet hole extends into the outer cylinder 1.
In the running process of the air spring, an object is connected by the connector 6, the pressure of the object acts on the piston rod 2 and the piston 9, the air in the air cavity 21 of the piston 9 generates pressure, and the two ends of the piston 9 are stressed and have different cross sectional areas, so that pressure difference is generated at the two ends of the piston 9, and elasticity is generated to realize the dry movement of the piston 9; when the object pressure is removed, the piston rod 2 returns to the initial state again, and the reuse of the gas spring can be realized.
If the gas spring is acted by a heavy load exceeding the bearing capacity of the gas spring in the use process, the piston 9 is subjected to the unbalanced stress phenomenon, the piston rod 2 is ejected out by a large elastic force, and in order to avoid the influence of the gas spring on the safety of operators, the invention is provided with the silencing cavity 10 in the inner cylinder 8, when the piston 9 drives the piston rod 2 to move upwards, the piston 9 presses the return spring 17 in the silencing cavity 10 and is subjected to the reaction force of the return spring 17, and part of the elastic force of the piston 9 is buffered, so that the piston rod 2 can run more slowly and stably; in addition, the reset spring 17 in the silencing cavity 10 can also silence noise generated in the running process of the piston rod 2; when the piston 9 moves, the generated vibration is transmitted into the lubricating oil in the silencing cavity 10, and part of noise is adsorbed by the lubricating oil due to the self-property of the lubricating oil, and meanwhile, resistance can be generated on the operation of the piston rod 2, so that the piston rod 2 operates more stably; lubricating oil in the silencing cavity 10 flows into the sealing sleeve 3 from the drain hole, the outer cylinder 1 and the liquid inlet channel 16 after being compressed, and lubricates the piston rod 2.
Because the air spring is generally applied to the range from-40 degrees to 80 degrees, the performance of the air spring can be influenced when the external temperature is too high or too low, the outer cylinder barrel 1 is sleeved outside the inner cylinder barrel 8, the inner cylinder barrel 8 is insulated by the lubricating oil in the outer cylinder barrel 1, the temperature in the inner cylinder barrel 8 is prevented from being greatly changed, and meanwhile, the lubricating oil in the outer cylinder barrel 1 can also flow into the silencing cavity 10 and the sealing sleeve 3 through the drain hole and the liquid inlet hole for silencing and lubricating.
Because the piston rod 2 will move up and down many times in the course of movement of the gas spring, the piston rod 2 will contact with seal sleeve 3 at this moment and produce friction, friction will cause noise and heating, so the invention has annular groove 12 in the seal sleeve 3 and contact place of piston rod 2, can introduce the lubricating oil in the outer cylinder 1 through the liquid inlet channel 16 in the annular groove 12, at this moment, lubricate through the lubricating oil between seal sleeve 3 and the piston rod 2, have reduced the friction, have reduced the cause; meanwhile, the scraping blades 13 above and below the annular groove 12 not only can seal the annular groove 12, but also can scrape oil on the passing piston rod 2, so that oil stains on the surface of the piston rod 2 are prevented from affecting the work of the gas spring.
The bottom of the inner cylinder 8 is provided with a gas release hole 19, the gas release hole 19 is of an inverted cone structure, a sealing plug 18 is arranged in the gas release hole 19, and a sealing ring is arranged at the joint of the sealing plug 18 and the gas release hole 19; in general, in order to disassemble the gas spring, a large amount of gas and lubricating oil are splashed out of the drill hole so as to easily cause injury to operators; in order to avoid injury, the bottom of the air cylinder is provided with the air vent hole 19, and air can be discharged from the air cavity 21 by rotating the sealing plug 18 in the air vent hole 19, so that the influence of punching holes on the surface of the air spring on the use of the air spring is avoided; meanwhile, as the air leakage hole 19 is of an inverted cone structure, the pressure in the air cavity 21 is maximum at the opening of the air leakage hole 19, and the air tightness of the whole air cavity 21 can be ensured only by plugging the air leakage hole 19 with the sealing plug 18; the sealing ring is used for enhancing the air tightness.
The connector 6 is connected with the top of the piston rod 2, and the top of the connector 6 is hinged with a universal head 7; the connector 6 mainly says that the piston rod 2 is connected with other parts, and universal head 7 at the top of connector 6 can make the part of waiting to connect take place the slope of different angles with piston rod 2, is convenient for the installation of other parts.
The top of the sealing sleeve 3 is provided with a limiting sleeve 5, the side surface of the limiting sleeve 5 is provided with a plurality of limiting holes 14, and locking screws 15 are arranged in the limiting holes 14; if the gas spring is in the operation process, the piston rod 2 is ejected, so that the limiting sleeve 5 is arranged outside the piston rod 2, and after the operation of the piston rod 2 is finished, the piston rod 2 can be fixed by penetrating the limiting hole 14 through the locking screw 15, and the piston rod 2 is prevented from being ejected accidentally.
Referring to fig. 3, in the embodiment of the present invention, a spiral air escape groove 20 is formed on the surface of the sealing plug 18, and a circular pull ring 4 is formed at the bottom of the sealing plug 18; when the sealing plug 18 is pulled out, if the sealing plug is pulled out directly, the air is ejected out to cause the excessive air pressure; the surface of the sealing plug 18 is provided with the air escape groove 20, so that the sealing plug 18 can slowly unscrew along the air escape groove 20 when being pulled out, air slowly flows out through the air escape groove 20, and when the sealing plug 18 is completely pulled out, the pressure at the air escape hole 19 is reduced to the atmospheric pressure, so that the human body is not damaged; the pull ring 4 is provided to facilitate the extraction of the sealing plug 18.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The utility model provides a safe and mute's air spring, includes outer cylinder (1), interior cylinder (8), piston (9), piston rod (2) and connector (6), its characterized in that: the bottom of the piston rod (2) is connected with the piston (9), the piston (9) is positioned in the inner cylinder barrel (8), an air cavity (21) is arranged at the bottom of the inner cylinder barrel (8), high-pressure nitrogen is filled in the air cavity (21), an annular limiting block (11) is arranged in the inner cylinder barrel (8), two ends of the limiting block (11) are respectively connected with the inner wall of the piston rod (2) and the inner cylinder barrel (8), the limiting block (11), the piston rod (2) and the piston (9) form a silencing cavity (10), a plurality of reset springs (17) are arranged in the silencing cavity (10), two ends of each reset spring (17) are respectively connected with the piston (9) and the limiting block (11), the outer cylinder barrel (1) is sleeved outside the inner cylinder barrel (8), lubricating oil is filled in the outer cylinder barrel (1), and a plurality of drain holes are arranged at positions corresponding to the silencing cavity (10); the sealing sleeve (3) is arranged at the top of the inner cylinder (8), an annular groove (12) is formed in the joint of the sealing sleeve (3) and the piston rod (2), elastic scraping blades (13) are arranged at the upper end and the lower end of the annular groove (12), liquid inlet channels (16) are formed in the two sides of the sealing sleeve (3), liquid inlet holes are formed in the positions, corresponding to the liquid inlet channels (16), of the inner cylinder (8), and one end of each liquid inlet hole extends into the outer cylinder (1);
the bottom of the inner cylinder (8) is provided with a gas leakage hole (19), the gas leakage hole (19) is of an inverted cone structure, a sealing plug (18) is arranged in the gas leakage hole (19), and a sealing ring is arranged at the joint of the sealing plug (18) and the gas leakage hole (19);
the surface of the sealing plug (18) is provided with a spiral air leakage groove (20), and the bottom of the sealing plug (18) is provided with a circular pull ring (4);
the connector (6) is connected with the top of the piston rod (2), and the universal head (7) is hinged to the top of the connector (6).
2. A safety silent gas spring according to claim 1, characterized in that: the sealing sleeve is characterized in that a limiting sleeve (5) is arranged at the top of the sealing sleeve (3), a plurality of limiting holes (14) are formed in the side face of the limiting sleeve (5), and locking screws (15) are arranged in the limiting holes (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522135.7A CN110159698B (en) | 2019-06-17 | 2019-06-17 | Safe and mute gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522135.7A CN110159698B (en) | 2019-06-17 | 2019-06-17 | Safe and mute gas spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159698A CN110159698A (en) | 2019-08-23 |
| CN110159698B true CN110159698B (en) | 2024-03-15 |
Family
ID=67625825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910522135.7A Active CN110159698B (en) | 2019-06-17 | 2019-06-17 | Safe and mute gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159698B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466109B (en) * | 2021-08-11 | 2022-05-27 | 龙游县万基建设工程检测有限公司 | Device and method for detecting impermeability of concrete for building |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119591A (en) * | 2017-12-21 | 2018-06-05 | 佛山市佛禅健康管理有限公司 | A kind of spring of arbitrarily stopping the supple of gas or steam of console for mosquito expelling box |
| CN208778566U (en) * | 2018-09-11 | 2019-04-23 | 北京磊焱氮气弹簧技术研究所 | A kind of twin-tub temperature-compensating gas spring |
| CN210371791U (en) * | 2019-06-17 | 2020-04-21 | 徐州天泓传动设备有限公司 | Safe and silent air spring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207005175U (en) * | 2017-06-08 | 2018-02-13 | 常州市莱特气弹簧有限公司 | Pressure adjustable gas spring |
-
2019
- 2019-06-17 CN CN201910522135.7A patent/CN110159698B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119591A (en) * | 2017-12-21 | 2018-06-05 | 佛山市佛禅健康管理有限公司 | A kind of spring of arbitrarily stopping the supple of gas or steam of console for mosquito expelling box |
| CN208778566U (en) * | 2018-09-11 | 2019-04-23 | 北京磊焱氮气弹簧技术研究所 | A kind of twin-tub temperature-compensating gas spring |
| CN210371791U (en) * | 2019-06-17 | 2020-04-21 | 徐州天泓传动设备有限公司 | Safe and silent air spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110159698A (en) | 2019-08-23 |
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