CN108930747A - A kind of gas spring and automobile tail gate spring assembly - Google Patents
A kind of gas spring and automobile tail gate spring assembly Download PDFInfo
- Publication number
- CN108930747A CN108930747A CN201811100884.2A CN201811100884A CN108930747A CN 108930747 A CN108930747 A CN 108930747A CN 201811100884 A CN201811100884 A CN 201811100884A CN 108930747 A CN108930747 A CN 108930747A
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- Prior art keywords
- cavity
- piston rod
- gas spring
- damper assembly
- connect
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- 238000007789 sealing Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 12
- 230000008859 change Effects 0.000 abstract description 24
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 46
- 238000010586 diagram Methods 0.000 description 10
- 238000013016 damping Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004904 shortening 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
- F16F9/0236—Telescopic characterised by having a hollow piston rod
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
-
- 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
- F16F9/0245—Means for adjusting the length of, or for locking, the spring or dampers
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/52—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics in case of change of temperature
- F16F9/526—Self-adjustment of fluid springs
-
- 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
- F16F9/54—Arrangements for attachment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to gas spring fields, in particular to a kind of gas spring and automobile tail gate spring assembly.The piston rod and cylinder barrel, damper assembly, the lead screw and nut being mutually matched that gas spring includes: driving device, is mutually matched, lead screw one end are connect with driving device, and the other end protrudes into piston rod, and nut is connect with piston rod one end；Damper assembly is installed on the one end of piston rod far from lead screw.The inner cavity of piston rod is divided into the first cavity, the second cavity by damper assembly along its length, and piston rod is set to the first cavity, and damper assembly can make the first cavity be connected to or close with the second cavity.Damper assembly can make the first cavity be connected to or close with the second cavity, after the first cavity is connected to the second cavity, balance pressure between two chambers, and damper assembly closes the first cavity and the second cavity, and piston rod, which no longer moves, after closing realizes self-locking function.The problem of environmental change leads to inside of air spring high pressure gas pressure change is also overcomed simultaneously.
Description
Technical field
The present invention relates to gas spring fields, in particular to a kind of gas spring and automobile tail gate spring assembly.
Background technique
Common gas spring is able to achieve the Electronic control of gas spring by installing decelerating motor and drive lead screw additional.The prior art
In gas spring in use, motor stop driving when, will continue to move, can not achieve motor close when gas spring no longer
Movement.
Summary of the invention
The purpose of the present invention is to provide a kind of gas spring and automobile tail gate spring assemblies, are intended to improve existing gas bullet
The problem of gas spring is continued movement by environmental change when spring motor is closed.
The present invention provides a kind of technical solution:
A kind of gas spring, gas spring include:
Driving device, the piston rod being mutually matched and cylinder barrel damper assembly, the lead screw and nut being mutually matched, lead screw one end
It is connect with driving device, the other end protrudes into piston rod, and nut is connect with piston rod one end；It is separate that damper assembly is installed on piston rod
One end of lead screw.
The inner cavity of piston rod is divided into the first cavity, the second cavity by damper assembly along its length, and piston rod is set to
First cavity, damper assembly can make the first cavity be connected to or close with the second cavity.
In other embodiments of the invention, above-mentioned damper assembly includes:
The inner cavity of piston rod is divided into the first cavity, the second cavity by piston, piston, and piston is provided with via hole.
Closeouts, closeouts are set to the second cavity and match with via hole.
Elastic component, the opposite both ends of elastic component are connect with piston rod, closeouts respectively.
Sealing ring, sealing ring are connect with piston, and sealing ring can make the first cavity be connected to or close with the second cavity.
In other embodiments of the invention, above-mentioned damper assembly further includes the block made of thermo-sensitive material, block with
One end of elastic component connects.
In other embodiments of the invention, above-mentioned damper assembly further includes overflow frame, and overflow frame is connect with piston, overflow
Frame is matched with sealing ring, and the first cavity is made to be connected to or close with the second cavity.
In other embodiments of the invention, above-mentioned damper assembly further includes retaining ring, and the retaining ring and the elastic component connect
It connects, the retaining ring and the closeouts both ends that be respectively arranged at the elastic component opposite.
In other embodiments of the invention, above-mentioned elastic component is spring.
In other embodiments of the invention, above-mentioned piston rod is connect by detaining riveting connection component with nut；Piston rod is set
Be equipped with card slot, button riveting connection component includes scotch, snap ring, and scotch one end is protruded into card slot and abutted with piston rod, the other end and
Nut abuts, and snap ring protrudes into card slot and abuts with scotch.
In other embodiments of the invention, above-mentioned lead screw is provided with U-shaped sealing ring close to one end of driving device, U-shaped
Sealing ring is sheathed on lead screw.
In other embodiments of the invention, above-mentioned gas spring further includes the control device being electrically connected to the drive, control
Device processed controls the mobile distance of piston rod by control driving device.
The present invention also provides a kind of technical solutions:
A kind of automobile tail gate spring assembly, automobile tail gate spring assembly include above-mentioned gas spring.
Gas spring provided in an embodiment of the present invention and the beneficial effect of automobile tail gate spring assembly are:
The inner cavity of piston rod is divided into for the first cavity, the second cavity, driving device driving piston rod movement by damper assembly
Afterwards, the first cavity, the respective volume of the second cavity change, and a volume increases, another volume reduces, and correspondingly lead
The pressure change of two chambers is caused, the pressure difference between two chambers will lead to the trend that piston rod is mobile or generation is mobile, damper assembly energy
So that the first cavity is connected to or is closed with the second cavity, after the first cavity is connected to the second cavity, balances pressure between two chambers, damping
Component closes the first cavity and the second cavity, and piston rod, which no longer moves, after closing realizes self-locking function.Correspondingly, work as the external world
The volume of temperature change, two chambers changes, and piston rod can have mobile trend, but need the volume change of two chambers until
It when the active force of pressure difference between two chambers is greater than the damping force of damper assembly, can just make piston rod mobile, also overcome environment change
The problem of change causes inside of air spring nitrogen pressure to change.
Further, start or close the closeouts and sealing ring in damper assembly when piston rod movement by pressure difference,
The first cavity is set to be connected to or close with the second cavity.Elastic component designs room temperature force value, and temperature-sensitive block generates closeouts different
High/low temperature force value, when piston rod movement, can obtain the dynamic antivibration power under different temperatures, make gas spring lifting force is constant setting
In force value, the problem of temperature change causes gas spring lifting force to change is overcome.Piston rod movement stops closeouts in elastic component
Promotion under close the first cavity and the second cavity lane, make piston rod generate setting damping force, admittance close after piston rod
It no longer moves and realizes self-locking purpose.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the structural schematic diagram of gas spring provided in an embodiment of the present invention；
Fig. 2 shows the schematic diagram of internal structures of piston rod provided in an embodiment of the present invention；
Fig. 3 shows III in Fig. 2 enlarged diagram；
Fig. 4 shows the structural schematic diagram of nut provided in an embodiment of the present invention Yu piston rod junction；
Fig. 5 shows the structural schematic diagram of driving device provided in an embodiment of the present invention Yu lead screw junction.
Icon: 100- gas spring；110- driving device；120- piston rod；130- cylinder barrel；140- lead screw；The sealing of 141-U type
Circle；150- nut；160- damper assembly；The first cavity of 161-；The second cavity of 162-；163- piston；164- closeouts；165- bullet
Property part；166- sealing ring；167- block；168- overflow frame；170- detains riveting connection component；171- scotch；172- snap ring.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the embodiment of the present invention, it is to be understood that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
The invention product using when the orientation or positional relationship usually put or those skilled in the art usually understand
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the equipment of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively important
Property.
In the description of the embodiment of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term
" setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment
Fig. 1 shows the structural schematic diagram of gas spring 100 provided in an embodiment of the present invention, referring to Fig. 1, the present embodiment mentions
A kind of gas spring 100 is supplied, in the present embodiment, gas spring 100 is mainly used for automobile tail gate, it should be noted that in this hair
In bright other embodiments, gas spring 100 can be used for other component, and the present invention does not limit the purposes of gas spring 100
It is fixed.
In detail, gas spring 100 includes driving device 110, the piston rod 120 that is mutually matched and cylinder barrel 130, is mutually matched
Lead screw 140 and nut 150, damper assembly 160,140 one end of lead screw connect with driving device 110, and the other end protrudes into piston rod
120, nut 150 is connect with 120 one end of piston rod；Damper assembly 160 is installed on the one end of piston rod 120 far from lead screw 140.
Fig. 2 shows the schematic diagram of internal structures of piston rod 120 provided in an embodiment of the present invention, please refer to Fig. 2 and Fig. 1.
The inner cavity of piston rod 120 is divided into the first cavity 161, the second cavity 162 by damper assembly 160 along its length,
Piston rod 120 is set to the first cavity 161, and damper assembly 160 can make the first cavity 161 be connected to or close with the second cavity 162.
Further, the interior intracavitary of piston rod 120 is protruded into 140 one end of lead screw, and damper assembly 160 is installed on piston rod 120
One end far from lead screw 140.The inner cavity of piston rod 120 is divided into the first cavity 161, the second cavity 162 by damper assembly 160, the
One cavity 161 and the second cavity 162 are optionally closed or are opened, and correspondingly, the first cavity 161 is connected to the second cavity 162
Or closing is realized under the effect of 120 internal gas of piston rod by damper assembly 160.
In the prior art, driving device 110 drives lead screw 140 to rotate, and lead screw 140 acts on nut 150,150 band of nut
Piston bar 120 moves, after piston rod 120 moves, the variation of the distance between 120 end of piston rod and lead screw 140, and piston rod
Volume between 120 ends and lead screw 140, which changes, leads to the pressure change of gas, when 110 stop motion of driving device, on
Piston rod 120 can be acted on by stating gas, cause piston rod 120 mobile.
In the present embodiment, the inner cavity of piston rod 120 is divided into for the first cavity 161, the second cavity by damper assembly 160
162, after driving device 110 drives piston rod 120 mobile, the first cavity 161, the respective volume of the second cavity 162 become
Change, a volume increases, another volume reduces, and accordingly results in the pressure of two chambers (the first cavity 161, the second cavity 162)
Variation, it is mobile or with occurring mobile trend that the pressure difference between two chambers will lead to lead screw 140, and damper assembly 160 can make the
One cavity 161 is connected to or closes with the second cavity 162, after the first cavity 161 is connected to the second cavity 162, balances between two chambers
Pressure, damper assembly 160 close the first cavity 161 and the second cavity 162, and piston rod 120 is no longer mobile after closing realizes certainly
The function of lock.Correspondingly, when external environment changes (such as temperature raising), the volume of two chambers changes, piston rod 120
When can have mobile trend, but the active force of the pressure difference between two chambers being needed to be greater than the damping force of damper assembly 160, just meeting
Keep piston rod 120 mobile, also overcomes the problem of environmental change leads to 100 internal gas pressure change of gas spring.
In the present embodiment, driving device 110 includes motor, speed reducer, and motor is connect with speed reducer, speed reducer and piston
Bar 120 connects.It should be noted that in other embodiments of the invention, driving device 110 or other actuators.
Fig. 3 shows III in Fig. 2 enlarged diagram, please refers to Fig. 2 and Fig. 3.
In the present embodiment, damper assembly 160 includes piston 163, closeouts 164, elastic component 165, sealing ring 166；It is living
Plug 163, closeouts 164, elastic component 165, sealing ring 166 are all set in the inside of piston rod 120.
The inner cavity of piston rod 120 is divided into the first cavity 161, the second cavity 162 by piston 163, and piston 163, which is provided with, leads
Through-hole (does not mark) in figure, and via hole is connected to the first cavity 161 and the second cavity 162.Closeouts 164 are set to the second cavity
It 162 and is matched with via hole.The opposite both ends of elastic component 165 are connect with piston rod 120, closeouts 164 respectively.Elastic component 165
It is connect with closeouts 164, closeouts 164 are optionally blocked or beaten under the collective effect of elastic component 165 and two chamber pressure
It convinces through-hole by patient analysis, the first cavity 161 is made to be connected to or close with the second cavity 162.
Sealing ring 166 is connect with piston 163, and sealing ring 166 can make the first cavity 161 be connected to or close with the second cavity 162
It closes.In detail, sealing ring 166 is connect with piston 163, and sealing ring 166 can generate deformation under the action of two chamber pressure, makes piston
There is gap, so that the first cavity 161 be made to be connected to or close with the second cavity 162 between 163 and piston rod 120.
Referring to Fig. 2, when the pressure of the first cavity 161 is greater than the second 162 pressure of cavity, under differential pressure action, envelope
164 compression elastic piece 165 of blocking piece, when pressure is greater than elastic component 165 to the reaction forces of closeouts 164, closeouts 164 open the
One cavity 161 and the second cavity 162, until the pressure that two chamber pressure differences generate is equal to or less than 165 reaction force of elastic component, closure
Part 164 closes the first cavity 161 and the second cavity 162, two cavity volumes are not changing, and piston rod 120 no longer moves.Correspondingly,
It needs to overcome elastic component 165 to the reaction force of closeouts 164, just will lead to the volume of the first cavity 161 and the second cavity 162
Variation, therefore, damper assembly 160 have the function of prevent piston rod 120 move, driving device 110 not output power when, gas bullet
Spring 100 will not generate movement, have the function of self-locking.
Correspondingly, when the pressure of the first cavity 161 is less than the second 162 pressure of cavity, two cavity pressures and elastic component 165
Under active force collective effect, closeouts 164 block via hole.Sealing ring 166 can generate deformation under the action of two chamber pressure, make
There is gap, to make the first cavity 161 be connected to the second cavity 162, until pressure difference between sealing ring 166 and piston rod 120
Make no longer to have the gap between sealing ring 166 and piston rod 120.
From the above, it needs 166 deformation of sealing ring to having gap between sealing ring 166 and piston rod 120, just will lead to
The volume change of first cavity 161 and the second cavity 162, therefore, damper assembly 160 have the work for preventing piston rod 120 mobile
With, driving device 110 not output power when, gas spring 100 will not generate movement, have the function of self-locking.
In the present embodiment, above-mentioned elastic component 165 is spring, and closeouts 164 are steel ball, it should be noted that in this hair
In bright other embodiments, the other structures such as elastic component 165 or elastic rubber.Closeouts 164 or taper
The other structures such as needle, the material of closeouts 164 may be other.
Further, in the present embodiment, damper assembly 160 further includes block 167 made of thermo-sensitive material, block
167 connect with one end of elastic component 165.
In detail, in the present embodiment, the material of block 167 is PVC material, in other embodiments of the invention, gear
The material of block 167 may be other high molecular materials or other alloy materials etc..Block 167 made of thermo-sensitive material are
Finger is that the length of block 167 correspondingly changes under temperature change.
Block 167 is connect with one end of elastic component 165, and in the present embodiment, it is close that block 167 is set to elastic component 165
One end of closeouts 164, block 167 are fixedly connected with elastic component 165, and closeouts 164 are abutted with block 167.In other implementations
In example, block 167 also be can be set in the one end of elastic component 165 far from closeouts 164.
In the use process of gas spring 100, it can determine that driving device 110 needs to export according to environment temperature at that time
Function.When environment temperature is high, 167 extended length △ L of block made of thermo-sensitive material, correspondingly, elastic component 165 is by block 167
Compression, length reduces △ L when 165 length of elastic component is than room temperature.110 output power of driving device, 162 volume of the second cavity increase
Greatly, pressure reduces, and two chambers form pressure difference, only exists when pressure of first cavity 161 to the second cavity 162 is greater than elastic component 165
When active force at this temperature, elastic component 165 acts on closeouts 164 and opens via hole, the conducting of two chambers, and damper assembly 160 produces
Lively state damping force, driving device 110 is out of service, and elastic component 165 makes closeouts 164 close via hole, and two cavity volumes are no longer
Variation, the length of gas spring 100 no longer change, and gas spring 100 achievees the purpose that self-locking.
When the temperature is low, block 167 made of thermo-sensitive material shortens length △ H, and elastic component 165 extends, elastic component 165
Length increases △ H when length is than room temperature.Increasing by 165 length of elastic component by △ H makes closeouts 164 that via hole be caused to be opened, two chambers
In connected state.
Driving device 110 exports reverse power, and 162 volume of the second cavity reduces, and pressure increases, and pressure difference makes the second cavity
162 pair of first cavity 161 has pressure, it will be seen that the pressure acts on the power side of closeouts 164 with elastic component 165
To identical.Deformation is generated in overflow frame 168 in pressure impetus lower seal 166, two chambers are connected, driving device 110 is stopped
It only runs, sealing ring 166 restores deformation until two chambers are closed, and the length of gas spring 100 no longer changes, and gas spring 100 reaches certainly
The purpose of lock.
So piston rod 120 is mobile, 162 volume of the second cavity increases or reduces, and damper assembly 160 can make gas bullet
Spring 100 achievees the purpose that self-locking, and the configuration of block 167 made of thermo-sensitive material makes gas spring 100 under different temperature condition
To realize preset elongation or shortening amount.
In this other embodiment of the present invention, gas spring 100 further includes the control device being electrically connected with driving device 110
(not shown), control device control the mobile distance of piston rod 120 by control driving device 110.
Control device may include PLC or single-chip microcontroller, and control device can also stretching according to block 167 at use temperature
Contracting length determines the power that driving device 110 exports, and gas spring 100 is made to stretch preset length.
Further, in the present embodiment, damper assembly 160 further includes overflow frame 168, and overflow frame 168 and piston 163 connect
It connects, overflow frame 168 is matched with sealing ring 166, and the first cavity 161 is made to be connected to or close with the second cavity 162.
In detail, overflow frame 168 is in stepped hole shape, and elastic component 165 is passed through from the through-hole in overflow frame 168, overflow frame 168
Shape be correspondingly in stepped annular, sealing ring 166 is abutted with overflow frame 168, will lead to after the pressure of the first cavity 161 is excessive
Sealing ring 166 deforms, and the first cavity 161 is connected to the second cavity 162, and correspondingly, 166 not deformation of sealing ring or deformation are smaller
When, the first cavity 161 is not connected to the second cavity 162.
In other embodiments of the invention, above-mentioned overflow frame 168 or other structures.
In the present embodiment, damper assembly 160 further includes retaining ring (not marking in figure), and retaining ring is connect with elastic component 165, gear
It encloses and the both ends that be respectively arranged at elastic component 165 opposite of closeouts 164.Retaining ring is for supporting elastic component 165.
In the present embodiment, piston 163 extends along 120 length direction of piston rod, and 163 one end of piston is provided with limit hole
(not marking in figure), limit hole and lead screw 140 are coaxially disposed, and elastic component 165 protrudes into limit hole and connect with closeouts 164.Limit
Hole is coaxially disposed elastic component 165 and lead screw 140, and the stress of elastic component 165 is avoided to shift.
It should be noted that in other embodiments of the invention, damper assembly 160 may be set to be other structures,
For example, damper assembly 160 can be set to the component etc. that will form frictional force with 120 inner wall of piston rod.
Fig. 4 shows the structural schematic diagram of nut 150 and 120 junction of piston rod provided in an embodiment of the present invention, please join
Read Fig. 4.
In the present embodiment, piston rod 120 is connect by detaining riveting connection component 170 with nut 150；Piston rod 120 is arranged
Have card slot (not marked in figure), button riveting connection component 170 includes scotch 171, snap ring 172, and card slot is protruded into 171 one end of scotch
It is abutted with piston rod 120, the other end is abutted with nut 150, and snap ring 172 protrudes into card slot and abuts with scotch 171.
Piston rod 120 is set as the rod piece with inner cavity, and card slot is arranged in one end of rod piece, in production and process
In be easier.171 both ends of scotch support piston rod 120 and nut 150 respectively, and snap ring 172 is clamped scotch 171, makes piston
Bar 120 will not be relatively moved with nut 150.
In other embodiments of the invention, piston rod 120 can also be attached by other means with nut 150.
Fig. 5 shows the structural schematic diagram of driving device 110 and 140 junction of lead screw provided in an embodiment of the present invention, asks
Refering to Fig. 5.
In the present embodiment, lead screw 140 is provided with U-shaped sealing ring 141, U-shaped sealing ring close to one end of driving device 110
141 are sheathed on lead screw 140.
In the present embodiment, U-shaped sealing ring 141 is set to oil sealing close to one end of driving device 110, U-shaped sealing ring 141
It is set between bearing and lead screw 140, bearing is installed between lead screw 140 and cylinder barrel 130.Reduce bearing axial compressive force and shortens
The length of lead screw 140, reduces the length of entire gas spring 100.
In other embodiments of the invention, the sealing between lead screw 140 and driving device 110 can also be close using other
Sealing assembly.
The major advantage of gas spring 100 provided in an embodiment of the present invention is:
The inner cavity of piston rod 120 is divided into for the first cavity 161, the second cavity 162, driving device 110 by damper assembly 160
After driving piston rod 120 mobile, the first cavity 161, the respective volume of the second cavity 162 change, and a volume increases,
Another volume reduces, and accordingly results in the pressure change of two chambers, and the pressure difference between two chambers will lead to the movement of lead screw 140 or hair
Raw mobile trend, damper assembly 160 can make the first cavity 161 be connected to or close with the second cavity 162, the first cavity 161 and
After the connection of second cavity 162, pressure between two chambers is balanced, damper assembly 160 closes the first cavity 161 and the second cavity 162,
Lead screw 140, which does not move, after closing realizes self-locking function.Correspondingly, when ambient temperature changes, the volume of two chambers changes, living
Stopper rod 120 can have mobile trend, but the active force of the pressure difference between two chambers of needs is greater than the damping force of damper assembly 160
When, it can just make piston rod 120 mobile, also overcome the problem of environmental change causes 100 inside nitrogen pressure of gas spring to change.
The present invention also provides a kind of technical solutions:
A kind of automobile tail gate spring assembly, automobile tail gate spring assembly include above-mentioned gas spring 100, further, vapour
Tailstock door spring assembly further includes the pedestal for installing gas spring 100.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of gas spring, which is characterized in that the gas spring includes:
Driving device, the piston rod being mutually matched and cylinder barrel, damper assembly, the lead screw and nut being mutually matched, the lead screw one
End is connect with the driving device, and the other end protrudes into the piston rod, and the nut is connect with described piston rod one end；The resistance
Buddhist nun's component is installed on the one end of the piston rod far from the lead screw；
The inner cavity of the piston rod is divided into the first cavity, the second cavity, the piston by the damper assembly along its length
Bar is set to first cavity, and the damper assembly can make first cavity be connected to or close with second cavity.
2. gas spring according to claim 1, which is characterized in that the damper assembly includes:
The inner cavity of the piston rod is divided into first cavity, second cavity by piston, the piston, and the piston is set
It is equipped with via hole；
Closeouts, the closeouts are set to second cavity and match with the via hole；
Elastic component, the opposite both ends of the elastic component are connect with the piston rod, the closeouts respectively；
Sealing ring, the sealing ring are connect with the piston, and the sealing ring can make first cavity and second cavity
Connection is closed.
3. gas spring according to claim 2, which is characterized in that the damper assembly further includes made of thermo-sensitive material
Block, the block are connect with one end of the elastic component.
4. gas spring according to claim 2, which is characterized in that the damper assembly further includes overflow frame, the overflow
Frame is connect with the piston, and the overflow frame is connect with the sealing ring, is connected to first cavity with second cavity
Or it closes.
5. gas spring according to claim 2, which is characterized in that the damper assembly further includes retaining ring, the retaining ring with
Elastic component connection, the retaining ring and the closeouts both ends that be respectively arranged at the elastic component opposite.
6. gas spring according to claim 2, which is characterized in that the elastic component is spring.
7. gas spring according to claim 1-6, which is characterized in that the piston rod passes through button riveting connection component
It is connect with the nut；The piston rod is provided with card slot, and the button riveting connection component includes scotch, snap ring, the stop
Block one end is protruded into the card slot and is abutted with the piston rod, and the other end is abutted with the nut, and the snap ring protrudes into the card slot
And it is abutted with the scotch.
8. gas spring according to claim 1, which is characterized in that the lead screw is arranged close to one end of the driving device
There is U-shaped sealing ring, the U-shaped sealing ring is sheathed on the lead screw.
9. gas spring according to claim 1, which is characterized in that the gas spring further includes being electrically connected with the driving device
The control device connect, the control device control the mobile distance of the piston rod by controlling the driving device.
10. a kind of automobile tail gate spring assembly, which is characterized in that the automobile tail gate spring assembly includes that claim 1-9 appoints
Gas spring described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100884.2A CN108930747A (en) | 2018-09-20 | 2018-09-20 | A kind of gas spring and automobile tail gate spring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100884.2A CN108930747A (en) | 2018-09-20 | 2018-09-20 | A kind of gas spring and automobile tail gate spring assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108930747A true CN108930747A (en) | 2018-12-04 |
Family
ID=64443809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811100884.2A Pending CN108930747A (en) | 2018-09-20 | 2018-09-20 | A kind of gas spring and automobile tail gate spring assembly |
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| Country | Link |
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| CN (1) | CN108930747A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826897A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of temperature-sensitive automatic pressure-balancing piston spring |
| CN110159693A (en) * | 2019-06-24 | 2019-08-23 | 徐州天泓传动设备有限公司 | A kind of adjustable protective type gas spring |
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| CN110159693A (en) * | 2019-06-24 | 2019-08-23 | 徐州天泓传动设备有限公司 | A kind of adjustable protective type gas spring |
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