CN111720468B - Balance air spring with bidirectional power airflow control piece - Google Patents
Balance air spring with bidirectional power airflow control piece Download PDFInfo
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- CN111720468B CN111720468B CN202010629026.8A CN202010629026A CN111720468B CN 111720468 B CN111720468 B CN 111720468B CN 202010629026 A CN202010629026 A CN 202010629026A CN 111720468 B CN111720468 B CN 111720468B
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- piston
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- hole
- gas flow
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- 230000002457 bidirectional effect Effects 0.000 title description 4
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 210000004907 gland Anatomy 0.000 claims abstract description 42
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 43
- 238000009434 installation Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0227—Telescopic characterised by the piston construction
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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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0281—Details
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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
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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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
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
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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
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/369—Sealings for elements other than pistons or piston rods, e.g. valves
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0011—Balancing, e.g. counterbalancing to produce static balance
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
A counterbalanced gas spring provided with a bi-directional power gas flow control, comprising: sealing member, the piston rod body and elasticity stop the piece, and elasticity stop the piece and include: the piston assembly, the piston gland and the power airflow control part; wherein, the piston assembly includes: the elastic stopping piece is simple in composition structure, low in part processing difficulty and capable of meeting the application in multiple fields.
Description
Technical Field
The invention relates to the field of balance force gas springs, in particular to a balance gas spring with a bidirectional power gas flow control piece.
Background
A gas spring (gas spring) is an industrial accessory which can play the roles of supporting, buffering, braking, height adjusting, angle adjusting and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the cross section area of the piston rod smaller than that of the piston. Due to the fundamental difference in principle, the gas spring has very remarkable advantages compared with the common spring: the speed is relatively slow, the dynamic force change is not large (generally within 1: 1.2), and the control is easy.
With the application fields of gas springs becoming wider and wider, the application of a balance force gas spring also has application requirements in multiple fields, such as the application numbers: cn201711296002.x discloses an air spring based high pressure micro-regulating valve. The air spring cavity and the air spring cavity welding base are connected by argon arc welding; the upper part of the air spring cavity is provided with a locking cover; the lower end face of the air spring is connected with the air spring connecting seat through a first inner hexagon bolt and is placed in the air spring cavity; the return spring is arranged between the air spring connecting seat and the air spring cavity welding base; the upper end of the valve fixing seat is connected with the air spring cavity welding base through a second inner hexagon bolt; the regulating valve is arranged at the lower end of the valve fixing seat; the regulating valve is connected with the air spring connecting seat through a valve coupling and a limiting connecting shaft.
If the application number is as follows: CN201920474811.3 discloses a nitrogen spring structure, which comprises a cylinder body, a plunger rod and an intermediate sleeve, wherein the cylinder body is provided with a cylinder body hole, the intermediate sleeve is hermetically connected to the upper part of the inner wall of the cylinder body hole, the plunger rod is hermetically connected with the inner hole of the intermediate sleeve in a sliding manner, the cylinder body hole of the cylinder body is filled with high-pressure nitrogen, the inner end surface of the plunger rod is provided with at least two steps of stepped bosses extending outwards, the inner wall of the intermediate sleeve is provided with an inwards extending stop boss and a limiting boss, a Y-shaped sealing ring is arranged in a sealing ring accommodating groove, and the periphery of the intermediate sleeve is provided with an annular pressure relief thin-walled boss; the outer end face of the plunger rod is provided with at least one stress surface which forms an inclined angle relative to the outer end face; the cylinder body hole bottom of cylinder body is equipped with the mounting hole, is fixed with the end cap mount pad on the mounting hole, is equipped with the end cap blind hole towards the cylinder body hole on the end cap mount pad.
The piston of the gas spring structure is too complex in composition, and the processing difficulty of parts is high, so that the application requirements of multiple fields are difficult to meet.
Disclosure of Invention
The invention aims to provide a balance gas spring which is simple in structure, low in processing difficulty, long in service life, stable in elastic effect and suitable for multiple fields.
The technical scheme of the invention is as follows: a counterbalanced gas spring provided with a bi-directional power gas flow control, comprising: sealing member, the one end setting that is equipped with airtight cavity are in the airtight cavity of sealing member, and the other end accesss to the outside piston rod body of sealing member and sets up in the sealing member and hinder the piece with piston rod body fixed connection's elasticity, and elasticity hinders and stops the piece and include: the piston assembly is fixedly arranged on the piston rod body, the piston glands are symmetrically arranged at two ends of the piston assembly and are fixedly connected with the piston rod body, and the power airflow communication control piece is arranged between the piston assembly and the piston glands;
wherein, the piston assembly includes: the piston main body is movably sealed with the inner wall of the sealing element, and the rubber O-shaped sealing ring is arranged in the longitudinal middle of the piston main body and used for blocking gas flow; the piston main body is further provided with a longitudinal through hole, one end of the longitudinal through hole is used for penetrating through two end faces of the piston main body, the power airflow control pieces are symmetrically arranged at two ends of the longitudinal through hole respectively, a transverse through hole is further arranged in the middle section of the longitudinal through hole, one end of the transverse through hole is communicated with the longitudinal through hole, and the other end of the transverse through hole is communicated with the middle of the rubber O-shaped sealing ring placing groove.
In one embodiment, the power air flow control member comprises: the elastic pressing ring is arranged on one side, away from the longitudinal through hole, of the sealed pressing sheet and used for providing sealing resistance for the sealed pressing sheet.
In one embodiment, the elastic pressing ring and the rubber O-shaped sealing ring are made of elastic deformation materials.
In one embodiment, the elastic pressing ring is arranged in a fixed value annular shape, and the cross section of the elastic pressing ring is circular or square.
In one embodiment, the piston gland includes: the first piston gland and the second piston gland are respectively arranged on two end faces of the piston main body, and a power air flow control part is further arranged between the first piston gland and the second piston gland.
In one embodiment, the power air flow control member comprises: the first power air flow control piece is arranged between the first piston gland and the piston main body, and the second power air flow control piece is arranged between the second piston gland and the piston main body.
In one embodiment, the connection between the first piston gland and the piston assembly and the connection between the second piston gland and the piston assembly are respectively provided with a first mounting concave step groove and a second mounting concave step groove, the first mounting concave step groove and the second mounting concave step groove are used for respectively assembling a first power air flow control part and a second power air flow control part, the outer sides of the first mounting concave step groove and the second mounting concave step groove are respectively provided with an opening, and the openings are communicated with a gap formed between the closed cavity and the piston main body.
In one embodiment, the first power airflow control part comprises a first closed pressing sheet and a first elastic pressing ring; the second power airflow control part consists of a second closed pressing sheet and a second elastic pressing ring.
In one embodiment, the seal comprises: the cylinder, set up the direction sealing system and the back stifled piece of setting at the cylinder other end at cylinder one end, elasticity hinder the piece and set up in this cylinder, and the piston rod body one end hinders with elasticity and stops the piece and be connected, and the other end passes the direction sealing system and accesss to the external world.
In one embodiment, the guiding and sealing system includes a guiding and limiting member for preventing the piston rod from shaking during the displacement, and a lip seal disposed on the guiding and limiting member for ensuring that the air tightness inside the cylinder is not affected when the piston rod is displaced.
The balance gas spring provided with the bidirectional power gas flow control piece has the advantages of simple composition structure, low part processing difficulty and long service life, and can meet the application in multiple fields.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a general schematic view of the elastic stop of the present invention;
FIG. 3 is a schematic view of the piston assembly of the resilient stop of the present invention;
FIG. 4 is a schematic view of the dynamic airflow control feature of the elastic stop of the present invention;
FIG. 5 is a schematic view of the gas flow direction of the elastic stop of the present invention in an extended state;
FIG. 6 is a schematic view of the elastic stop of the present invention illustrating gas flow in the compressed state;
fig. 7 is a schematic view of the piston body of the elastic stop of the present invention provided with a longitudinal through hole.
Detailed Description
It should be noted that all the directional indications (such as up, down, left, right, front, back, inner and outer, center … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, a counterbalanced gas spring provided with a bi-directional power gas flow control, the piston rod comprising: the sealing device comprises a sealing element 2, a piston rod body 3 and an elastic stopping element 1, wherein a closed cavity 10 is arranged in the sealing element 2, one end of the piston rod body 3 is arranged in the sealing element 2, and the other end of the piston rod body 3 is communicated with the outside of the sealing element 2; this elasticity hinders and stops piece 1 and sets up in airtight cavity 10, includes: the piston assembly 11 is fixedly arranged on the piston rod body 3, the piston glands 12 are symmetrically arranged at two ends of the piston assembly 11, and the power airflow communication control part 13 is arranged between the piston assembly 11 and the piston glands 12;
wherein, piston assembly 11 includes: the piston comprises a piston main body 111 arranged in a clearance with the inner wall of the closed cavity 10 and a rubber O-shaped sealing ring 112 arranged on the side surface of the piston main body 111 and used for blocking gas, wherein a rubber O-shaped sealing ring placing groove 113 is arranged on the piston main body 111, the rubber O-shaped sealing ring placing groove 113 is used for limiting the moving distance of the rubber O-shaped sealing ring 112 and matching with the rubber O-shaped sealing ring 112, sealing surfaces are formed on two sides of the rubber O-shaped sealing ring placing groove 113 by the rubber O-shaped sealing ring 112, and the sealing surfaces are formed by 3-point sealing formed by interference fit of the O-shaped sealing ring 112 with the inner wall of the sealing element 2, the groove bottom of the rubber O-shaped sealing ring placing groove 113 and the side end surface of the rubber O-shaped sealing ring placing groove 113 respectively.
The piston main body 111 is further provided with a longitudinal through hole 114, the longitudinal through hole 114 is used for communicating two end faces of the piston main body 111, the power air flow control member 13 is respectively and symmetrically arranged at two ends of the longitudinal through hole 114, the middle section of the longitudinal through hole 114 is further provided with a transverse through hole 115, one end of the transverse through hole 115 is communicated with the longitudinal through hole 114, the other end of the transverse through hole 115 is communicated with a rubber O-shaped sealing ring placing groove 113 provided with a rubber O-shaped sealing ring 112, and when the rubber O-shaped sealing ring 112 is positioned at any end of the rubber O-shaped sealing ring placing groove 113, the transverse through hole 115 is exposed to be ventilated by the rubber O-shaped sealing ring 112.
Referring to fig. 2, the piston gland 12 includes: the piston assembly comprises a first piston gland 121 and a second piston gland 122, wherein the first piston gland 121 and the second piston gland 122 are respectively arranged on two end faces of the piston main body 111, and a power and air flow control member 13 is further arranged between the first piston gland 121 and the second piston gland 122.
With reference to fig. 3, said power-air-flow control member 13 comprises: a first power air flow passage control member 131 and a second power air flow passage control member 132, the first power air flow passage control member 131 being disposed between the first piston cover 121 and the piston body 111, the second power air flow passage control member 132 being disposed between the second piston cover 122 and the piston body 111.
As shown in fig. 2 and 3, a first installation concave step groove 1211 and a second installation concave step groove 1221 are respectively disposed at the connection positions of the first piston gland 121 and the second piston gland 122 with the piston assembly 11, the first installation concave step groove 1211 and the second installation concave step groove 1221 are used for respectively assembling the first power air flow control member 131 and the second power air flow control member 132, openings 123 are respectively disposed at the outer sides of the first installation concave step groove 1211 and the second installation concave step groove 1221, and the openings 123 communicate with a gap formed between the sealed cavity 10 and the piston main body 111.
Referring to fig. 2 to 4, the first motive air flow-through control member 131 includes: a first sealing pressing sheet 1311 arranged on the longitudinal through hole 114 for sealing the longitudinal through hole 114, and a first elastic pressing ring 1312 arranged on one side of the first sealing pressing sheet 1311 far away from the longitudinal through hole 114 for providing sealing resistance for the first sealing pressing sheet 1311.
Further preferably, the second powered air flow control member 132 includes: a second sealing pressing sheet 1321 arranged on the longitudinal through hole 114 for sealing the longitudinal through hole 114, and a second elastic pressing ring 1322 arranged on one side of the second sealing pressing sheet 1321 far away from the longitudinal through hole 114 for providing sealing resistance for the second sealing pressing sheet 1321.
As shown in fig. 1, 2 and 5, the elastic stopper 1 blocks the sealed chamber 10 into two first chambers 6 and two second chambers 5 which can only communicate gas through the longitudinal through hole 114. When no external force is applied, the gas pressure in the first cavity 6 and the gas pressure in the second cavity 5 are the same in unit area, because the area of the first piston gland 121 exposed in the first cavity 6 is smaller than the area of the second piston gland 122 combined with the area of the end of the piston rod 3 exposed in the second cavity 5, the elastic stopping member 1 always has a pushing force which enables the piston rod 3 and the elastic stopping member 1 to extend outwards, during the extension displacement, the rubber O-ring 112 displaces to seal the gap formed between the transverse through hole 115 and the first cavity 6 by the piston main body 111 and the closed cavity 10, the gas is led to the second closed pressing sheet 1321 by the longitudinal through hole 114, because the second closed pressing sheet 1321 is in interference fit with the second elastic pressing sheet 1322, the side outlet of the longitudinal through hole 114 is also sealed, so that the required supporting balance force is generated, and the gas is forced to push the second closed pressing sheet 1321 by the external force applied, the gas in the second chamber 5 can be circulated to the first chamber 6, and the gas pressure in the two chambers can be maintained in a balanced state by the transfer of the gas between the two chambers.
As shown in fig. 6, because of the initial pushing force, the elastic stopper 1 is only compressed and displaced from the piston main body 111 to the second piston gland 122 direction under the action of an external force, during the compression displacement, the rubber O-ring 112 is displaced to close the gap between the transverse through hole 115 and the second cavity 5 formed between the piston main body 111 and the closed cavity 10, and the gas is led to the first closed pressing sheet 1311 from the longitudinal through hole 114, because the first closed pressing sheet 1311 is in interference fit with the first elastic pressing ring 1312, the side outlet of the longitudinal through hole 114 is also closed, so that the required supporting balance force is generated, and only by forcing the gas to push the first closed pressing sheet 1311 by the external force, the gas in the first cavity 6 is allowed to flow to the second cavity 5, so as to maintain the balance state of the gas pressure in the two cavities.
This elasticity hinders and stops piece 1 and realizes the function of balanced power air spring through simple structure setting, and its part processing degree of difficulty is low, has satisfied the application demand in different fields.
By arranging two power air flow control members 13 at two ends of the longitudinal through hole 114 on one piston main body 111, the elasticity of the air spring is controlled when the air spring is compressed and stretched, and the power air flow control members 13 are not abraded in the using process, so that the elasticity of the air spring is reduced.
Further, the rubber O-ring 112 is made of a material having good wear resistance and sealing property.
Further, the contact area between the sealing pressing piece 131 and the elastic pressing ring 132 after being pressed can be set to the external force constant value, for example, the larger the contact area between the first elastic pressing ring 1312 and the first sealing pressing piece 1311 after being pressed is, the larger the external force is required to deform the first elastic pressing ring 1312.
Further, the first elastic pressing ring 1312, the second elastic pressing ring 1322 and the rubber O-ring 112 are all made of an elastic deformable material.
Furthermore, the first elastic pressing ring 1312, the second elastic pressing ring 1322 and the rubber O-ring 112 are disposed in a ring shape, and the cross sections of the first elastic pressing ring 1312, the second elastic pressing ring 1322 and the rubber O-ring 112 may be circular or square.
Referring to fig. 7, at least two longitudinal through holes 114 are formed in the piston body 111 in a ring shape at equal intervals. The arrangement of the longitudinal through holes 114 at equal intervals is favorable for the stability of the operation of the elastic stopping piece 1, and ensures that the elastic stopping piece 1 cannot be clamped in a closed cavity due to uneven air pressure when the displacement occurs.
Preferably, the first piston gland 121, the second piston gland 122 and the piston main body 111 are provided with mounting holes 14 at corresponding positions, and the mounting holes 14 are used for assembling the elastic stopper 1 with other devices.
Further referring to fig. 2, stepped structures 31 are disposed at the joints of the piston rod body 3 and the first and second piston glands 121 and 122, and the stepped structures 31 limit the displacement of the first and second piston glands 121 and 122.
As shown in connection with fig. 1, the seal 2 comprises: the cylinder 21, set up the guide seal system 22 and the back stifled piece 23 of setting at the cylinder 21 other end in cylinder 21 one end, elasticity stop 1 sets up in this cylinder 21, and the piston rod body 3 one end is connected with elasticity stop 1, and the other end passes guide seal system 22 and leads to the external world.
Further, the cylinder 21 is provided as a hollow cylinder, and may be any cylinder such as a cylinder, a square cylinder, or the like.
The elastic stopping piece 1 is correspondingly arranged according to the hollow shape of the cylinder 21, so that the elastic stopping piece 1 is always matched with the inner wall of the cylinder 21.
Preferably, the guiding and sealing system 22 includes a guiding and limiting member 221 and a lip sealing member 222 disposed on the guiding and limiting member 221, the guiding and limiting member 221 is used for preventing the piston rod body 3 from shaking during the displacement process, and the lip sealing member 222 is disposed on one side of the guiding and limiting member 221 for ensuring that the air tightness inside the cylinder 21 is not affected when the piston rod body 3 is displaced.
Preferably, the end of the piston rod body 3 remote from the elastic stopper 1 is provided with a connecting structure 4, and the connecting structure 4 is used for connecting the piston rod body 3 with other structures.
Further, the end of the rear blocking element 23 remote from the elastic blocking element 1 is also provided with a connecting structure 4. The piston rod can be assembled on other structures by means of the connecting structure 4. For example: the connecting structure 4 at one end of the rear plug 23 is connected with the windowsill, and the connecting structure 4 at one end of the piston rod body 3 is connected with the window to realize the function of the windowsill supporting rod. Furthermore, the piston rod can be used in different fields by means of the connecting structure 4.
In one embodiment, a weight is arranged on the piston rod body 3 via the connecting structure 4, the weight force of the weight is equal to and opposite to the initial existing thrust force of the elastic stopping member 1, so that after the weight is arranged, the elastic stopping member 1 is in a force balance state without other additional force.
In this force equilibrium state the elastic stop 1 is stationary, in which state the elastic stop 1 can only be displaced to perform an extension or compression movement upon application of additional power.
In the displacement process, the first cavity 6 and the second cavity 5 are communicated through the longitudinal through hole 114 of the elastic stopping member 1, the pressure intensity of the gas in unit area in the two cavities is kept to be the same, the displacement of the elastic stopping member 1 is stopped after the external force action is lost, and the elastic stopping member 1 is still in a force balance state.
The working principle of the invention is as follows: the air pressure of the first cavity 6 and the second cavity 5 in the piston rod is set, so that the supporting force provided by the air pressure of the first cavity 6 is equal to or slightly less than the minimum gravity of a support, when the elastic stopping piece 1 is compressed inwards, the rubber O-shaped sealing ring 112 arranged in the rubber O-shaped sealing ring mounting groove 113 is displaced to abut against one end, close to the piston rod body 3, of the rubber O-shaped sealing ring mounting groove 113 and the inner wall of the cylinder 21, so that the seal of the first cavity 6 is formed, the power gas can be held by the seal, the required supporting balance force is generated, the gas can be forced to push the first sealed pressing sheet 1311 open only by applying external pressure force, the power gas on the two sides of the elastic stopping piece 1 can be communicated with the first cavity 6, and the piston rod can perform compression movement.
When the piston rod extends outwards, the rubber O-ring 112 in the rubber O-ring receiving groove 113 is displaced to abut against one end of the rubber O-ring receiving groove 113 close to the first cavity 6 and the inner wall of the cylinder 21, thereby forming the seal of the second cavity 5, but the power gas passes through the second cavity 5 through the gap between the outer diameter of the elastic stopper 1 and the inner diameter of the cylinder 21, and then passes through the transverse through hole 115 to the second power gas flow passage control member 132, the gas is forced to push the second airtight pressure plate 1321 open only by the external force of pressure application, the power gas at both sides of the elastic stopper 1 can flow to the second cavity 5, and the piston rod can perform extension movement.
According to the invention, the power airflow control parts 13 are respectively arranged at the two ends of the elastic stopping part 1, so that the static balance of the piston rod body 3 can be better kept when the piston rod body is not displaced, and 6-grade wind can be resisted without changing the stopping position.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A counterbalanced gas spring provided with a bi-directional power gas flow control, comprising: sealing member, the one end setting that is equipped with airtight cavity is in the airtight cavity of sealing member, the other end accesss to the outside piston rod body of sealing member and setting are in the sealing member with piston rod body fixed connection's elasticity hinders and stops the piece, its characterized in that, elasticity hinders and stops the piece and includes: the piston assembly is fixedly arranged on the piston rod body, the piston glands are symmetrically arranged at two ends of the piston assembly and are fixedly connected with the piston rod body, and the power airflow communication control part is arranged between the piston assembly and the piston glands;
wherein the piston assembly comprises: the piston is characterized by comprising a piston main body and a rubber O-shaped sealing ring, wherein the piston main body is arranged in a gap with the inner wall of the sealing element, the rubber O-shaped sealing ring is arranged on the side surface of the piston main body and used for blocking gas flow, a rubber O-shaped sealing ring placing groove is formed in the piston main body, the rubber O-shaped sealing ring is arranged in the rubber O-shaped sealing ring placing groove, and the rubber O-shaped sealing ring placing groove is used for limiting the moving distance of the rubber O-shaped sealing ring and matching the rubber O-shaped sealing ring to form sealing surfaces on the vertical end surfaces of two sides in the rubber O-shaped sealing ring placing groove; the piston main body is also provided with a longitudinal through hole which is used for communicating two end faces of the piston main body, the power airflow control part is respectively and symmetrically arranged at two ends of the longitudinal through hole, the middle section of the longitudinal through hole is also provided with a transverse through hole, one end of the transverse through hole is communicated with the longitudinal through hole, and the other end of the transverse through hole is communicated with the rubber O-shaped sealing ring mounting groove;
the power airflow passage control member includes: the elastic pressing ring is arranged on one side, away from the longitudinal through hole, of the closed pressing sheet and used for providing closed resistance for the closed pressing sheet.
2. The counterbalanced gas spring provided with a bi-directional power gas flow control as claimed in claim 1, wherein said resilient collar and said rubber O-ring are both made of an elastically deformable material.
3. The counterbalanced gas spring provided with a bi-directional power gas flow control as claimed in claim 1, wherein said resilient collar is provided in a constant annular configuration and has a circular or rectangular cross-section.
4. The counterbalanced gas spring provided with a bi-directional power gas flow control as claimed in any one of claims 1 to 3, wherein the piston gland comprises: the piston comprises a piston body, a first piston gland and a second piston gland, wherein the first piston gland and the second piston gland are respectively arranged on two end faces of the piston body, and a power and air flow control part is respectively arranged between the first piston gland and the second piston gland.
5. The counterbalanced gas spring provided with a bi-directional power gas flow control as set forth in claim 4, wherein said power gas flow control comprises: a first power air flow through control disposed between the first piston gland and the piston body and a second power air flow through control disposed between the second piston gland and the piston body.
6. The balanced gas spring with bi-directional power gas flow control feature of claim 5 wherein the first and second piston glands are provided with first and second mounting recesses, respectively, at their connection to the piston assembly for receiving the first and second power gas flow control features, respectively, the first and second mounting recesses being open to close engagement between the outside of the first and second mounting recesses and open to the gap formed between the enclosed cavity and the piston body.
7. The counterbalanced gas spring provided with a bi-directional power gas flow control as claimed in claim 5, wherein said first power gas flow control comprises a first obturating press plate and a first resilient press ring; and the second power airflow control part consists of a second closed pressing sheet and a second elastic pressing ring.
8. The counterbalanced gas spring provided with a bi-directional power gas flow control as set forth in claim 1, wherein said seal comprises: the elastic stopping device comprises a cylinder barrel, a guide sealing system arranged at one end of the cylinder barrel and a rear blocking piece arranged at the other end of the cylinder barrel, wherein the elastic stopping piece is assembled in the cylinder barrel, one end of a piston rod body is connected with the elastic stopping piece, and the other end of the piston rod body penetrates through the guide sealing system to be led out of the cylinder barrel.
9. The balanced gas spring with bi-directional power gas flow control according to claim 8, wherein said guide seal system comprises a guide limit member for preventing the piston rod body from lateral displacement sloshing during displacement and a lip seal member disposed on said guide limit member for ensuring gas tightness inside the cylinder during displacement movement of the piston rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629026.8A CN111720468B (en) | 2020-07-02 | 2020-07-02 | Balance air spring with bidirectional power airflow control piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010629026.8A CN111720468B (en) | 2020-07-02 | 2020-07-02 | Balance air spring with bidirectional power airflow control piece |
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| CN111720468A CN111720468A (en) | 2020-09-29 |
| CN111720468B true CN111720468B (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010629026.8A Active CN111720468B (en) | 2020-07-02 | 2020-07-02 | Balance air spring with bidirectional power airflow control piece |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113007255A (en) * | 2021-04-27 | 2021-06-22 | 江苏三乔智能科技有限公司 | Thread groove damping device |
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| CN111720468A (en) | 2020-09-29 |
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