CN114151492A - Strut type double-cavity membrane type air spring - Google Patents

Strut type double-cavity membrane type air spring Download PDF

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Publication number
CN114151492A
CN114151492A CN202111246376.7A CN202111246376A CN114151492A CN 114151492 A CN114151492 A CN 114151492A CN 202111246376 A CN202111246376 A CN 202111246376A CN 114151492 A CN114151492 A CN 114151492A
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CN
China
Prior art keywords
air
cylinder
strut
piston
air spring
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.)
Pending
Application number
CN202111246376.7A
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Chinese (zh)
Inventor
李尊远
付斌
曹安
丁亚康
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Lantu Automobile Technology Co Ltd
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Lantu Automobile Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lantu Automobile Technology Co Ltd filed Critical Lantu Automobile Technology Co Ltd
Priority to CN202111246376.7A priority Critical patent/CN114151492A/en
Publication of CN114151492A publication Critical patent/CN114151492A/en
Pending legal-status Critical Current

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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
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/049—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall multi-chamber 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
    • 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
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
    • F16F9/057—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type characterised by the piston
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses a support type double-cavity membrane type air spring, which relates to the technical field of design of air springs for passenger vehicles and comprises an upper support, a bag skin body and a damping cylinder, wherein the upper support, the bag skin body and the damping cylinder form a first air cavity together; a piston is further sleeved on the cylinder body of the damping cylinder, a second air cavity is formed in the piston, an electromagnetic switch valve is arranged on the piston, and the first air cavity and the second air cavity are communicated or disconnected through opening and closing of the electromagnetic switch valve; the first air chamber and the second air chamber are communicated or disconnected through the on-off of the electromagnetic switch valve, so that the change of the working volume of the air spring is realized, the rigidity adjusting function of the two air chambers on the air spring is greatly exerted on the premise of meeting the use space and the bearing requirement, when the road condition is changed rapidly, the air pressure in the air spring body changes along with the change of the air pressure, the rigidity of the two air springs is finally embodied, and the dual requirements of a user on vehicle control and comfort are met.

Description

Strut type double-cavity membrane type air spring
Technical Field
The invention relates to the technical field of design of air springs for passenger vehicles, in particular to a strut type double-cavity membrane type air spring.
Background
The air spring is formed by charging compressed air into a sealed container, and the air spring has ideal nonlinear elastic characteristics because the air has certain compressibility, and the height of a vehicle can be adjusted by charging and discharging air into and from the air spring on the premise of adding a height sensor.
However, because the volume of the air in the air spring is not changed, the rigidity of the air spring cannot be adjusted greatly, and only a deviation comfort mode or a movement mode, namely the rigidity is soft or hard, can be selected during adjustment of the whole vehicle, so that bad driving experience is provided for passengers and drivers.
Therefore, designing an air spring with adjustable rigidity to meet the requirements of comfort and stability of vehicles is a subject of research by designers at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the air spring structure with the double air chambers, wherein the double air chambers are connected through the electromagnetic switch valve, the connection and disconnection of the two air chambers are realized through the connection and disconnection of the electromagnetic switch valve, the effective volume of the air spring is changed, and the rigidity of the air spring can be adjusted in two stages of hardness and softness.
The specific scheme provided by the invention is as follows:
a support type double-cavity membrane type air spring comprises an upper support, a bag skin body and a damping cylinder, wherein a first air cavity is formed by the upper support, the bag skin body and the damping cylinder; still the cover is equipped with the piston on the cylinder body of shock attenuation cylinder, second air chamber has in the piston, be equipped with the electromagnetic switch valve on the piston, the switching of electromagnetic switch valve makes first air chamber with second air chamber intercommunication or disconnection.
Further, the piston comprises an inner cylinder and an outer cylinder, the inner cylinder is sleeved on the cylinder body, and the outer cylinder and the inner cylinder are arranged at intervals to form the second air cavity; the outer barrel is also provided with a vent hole, and the electromagnetic switch valve is arranged on the outer barrel and corresponds to the vent hole; operating the electromagnetic switch valve to open or close the vent hole so that the first air chamber is communicated with or disconnected from the second air chamber.
Furthermore, the damping cylinder also comprises a damping strut, one end of the damping strut is fixed with the upper support, and the other end of the damping strut is arranged in the cylinder body; the cylinder body and the shock strut are coaxially arranged and can axially move.
Further, the upper end part of the piston and the upper end face of the cylinder body are fixedly connected with the capsule shell body in a sealing mode through a second buckling and pressing ring; the lower end part of the piston is arranged on a support of the shock absorber and is connected with the support in a sealing mode through a sealing ring.
Furthermore, the upper bracket pass through first buckle clamping ring with capsule skin body sealing connection.
Furthermore, the shock strut is further provided with a buffer block, the buffer block is fixed at one end, close to the upper strut, of the shock strut, and the buffer block is opposite to the cylinder body.
The beneficial effect that adopts this technical scheme to reach does:
the strut type double-cavity air spring used by the passenger car is characterized in that a first air cavity and a second air cavity are communicated or disconnected through the on-off of an electromagnetic switch valve, so that the working volume of the air spring is changed, the rigidity adjusting function of the two air cavities on the air spring is greatly exerted on the premise of meeting the use space and bearing requirements, when the road condition is changed sharply, the air pressure in a bag skin body is changed along with the air pressure, the rigidity of the two air springs is finally embodied, and the dual requirements of a user on vehicle control and comfort are met; meanwhile, physical keys can be arranged in the cab, so that different driving modes can be selected, and convenience is brought to a driver to use.
Drawings
Fig. 1 is a schematic sectional view of a strut-type double-cavity membrane air spring in the scheme.
Fig. 2 is a schematic cross-sectional view of the piston portion.
Fig. 3 is a three-dimensional structure view of the support type double-cavity membrane type air spring in the scheme.
Wherein: 10 upper support, 11 first clamping ring, 20 capsule skin body, 31 cylinder body, 32 shock absorption strut, 33 buffer block, 40 piston, 41 inner cylinder, 42 outer cylinder, 43 second clamping ring and 50 electromagnetic switch valve.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The embodiment provides a strut type double-cavity membrane type air spring, which is applied to a passenger car so as to fulfill the aim of meeting the dual requirements of users on vehicle control and comfort; meanwhile, the double-cavity air spring provided by the scheme can be integrated on a common shock absorber and also can be integrated on a damping variable shock absorber to form a strut type double-cavity air spring assembly.
Referring to fig. 1 to 3, in the present scheme, an air spring is provided, which includes an upper support 10, a bladder skin body 20 and a shock absorption cylinder, wherein the upper support 10, the bladder skin body 20 and the shock absorption cylinder together form a first air chamber a; meanwhile, a piston 40 is further sleeved on the cylinder body 31 of the damping cylinder, a second air cavity B is arranged in the piston 40, an electromagnetic switch valve 50 is arranged on the piston 40, and the first air cavity A and the second air cavity B are communicated or disconnected through opening and closing of the electromagnetic switch valve 50.
It can be understood that when the electromagnetic switch valve 50 is closed, only the first air chamber a is acted, but at the moment, the effective volume of the air spring which only works in the first air chamber a is smaller, the rigidity of the air spring is large, and the driving performance of the vehicle is biased to be controlled; when the electromagnetic switch valve 50 is opened, the first air cavity A and the second air cavity B are communicated, the effective volume of the air spring is increased after the air spring is communicated, the rigidity of the air spring is reduced, and the driving performance of the vehicle is deviated to the comfort.
The connection between the first air cavity A and the second air cavity B is connected or disconnected through the on-off of the electromagnetic switch valve 50, the working volume of the air spring is changed, the rigidity conditions of the two air springs are finally reflected, a driver can exchange the two rigidity conditions according to actual requirements, and the dual requirements of the user on vehicle control and comfort are met.
In the scheme, the second air cavity B is built in the piston 40, specifically, the piston 40 comprises an inner cylinder 41 and an outer cylinder 42, the inner cylinder 41 is sleeved on the cylinder body 31, and the outer cylinder 42 and the inner cylinder 41 are arranged at intervals to form the second air cavity B; the outer cylinder 42 is also provided with a vent hole, and the electromagnetic switch valve 50 is arranged on the outer cylinder 42 and corresponds to the vent hole; thus, in specific operation, the electromagnetic switch valve 50 can be operated to open or close the vent hole, and the opening and closing of the vent hole can make the first air chamber a and the second air chamber B communicated or disconnected.
In this embodiment, the shock absorbing cylinder further includes a shock absorbing strut 32, one end of the shock absorbing strut 32 is fixed to the upper support 10 described above, and the other end of the shock absorbing strut 32 is disposed in the cylinder body 31; the cylinder 31 and the shock strut 32 are coaxially arranged and can axially move; it can be understood that the cylinder 31 can move along the axial direction of the shock strut 32 during the movement of the shock absorber, and the stability of the cylinder movement is improved by the shock strut 32.
Optionally, a buffer block 33 is further disposed on the shock strut 32, the buffer block 33 is fixed at one end of the shock strut 32 close to the upper support 10, and the buffer block 33 is directly opposite to the cylinder 31; such design makes cylinder 31 when receiving vibrations or assault, and the up end of cylinder 31 directly contacts with the buffer block 33 butt, utilizes buffer block 33 very first time to the impact that receives to cushion the shock attenuation, further promotes the reliability and the shock attenuation effect of structure.
Optionally, the upper end of the piston 40 is fixed to the upper end face of the cylinder 31, and the upper end of the piston 40 is hermetically connected to the capsule shell body 20 through a second snap ring 43; and the lower end portion of the piston 40 is disposed on a support of the shock absorber, which is fixed to the lower portion of the cylinder 31, and the piston 40 is hermetically connected to the support through an O-ring.
Optionally, the upper support 10 is hermetically connected to the capsule shell body 20 through the first buckling ring 11.
According to the strut-type double-cavity air spring used by the passenger car, the first air cavity A and the second air cavity B are communicated or disconnected through the on-off of the electromagnetic switch valve, so that the change of the working volume of the air spring is realized, the rigidity adjusting function of the air spring by the two air cavities is greatly exerted on the premise of meeting the use space and bearing requirements, when the road condition is changed sharply, the air pressure in the bag leather body changes along with the change of the air pressure, the rigidity of the two air springs is finally embodied, and the dual requirements of a user on vehicle control and comfort are met; meanwhile, physical keys can be arranged in the cab, so that different driving modes can be selected, and convenience is brought to a driver to use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (6)

1. A support type double-cavity membrane type air spring comprises an upper support (10), a bag skin body (20) and a damping cylinder, wherein the upper support (10), the bag skin body (20) and the damping cylinder jointly form a first air cavity A; the damping cylinder is characterized in that a piston (40) is further sleeved on a cylinder body (31) of the damping cylinder, a second air cavity B is formed in the piston (40), an electromagnetic switch valve (50) is arranged on the piston (40), and the first air cavity A is communicated with or disconnected from the second air cavity B due to the opening and closing of the electromagnetic switch valve (50).
2. A strut-type dual chamber diaphragm air spring as claimed in claim 1, wherein said piston (40) comprises an inner cylinder (41) and an outer cylinder (42), said inner cylinder (41) is fitted over said cylinder (31), said outer cylinder (42) is spaced from said inner cylinder (41) to form said second air chamber B; the outer cylinder (42) is also provided with a vent hole, and the electromagnetic switch valve (50) is arranged on the outer cylinder (42) and corresponds to the vent hole; operating the electromagnetic opening/closing valve (50) opens or closes the air vent, so that the first air chamber a is communicated with or disconnected from the second air chamber B.
3. A strut-type dual chamber diaphragm air spring as claimed in claim 1, wherein said shock-absorbing cylinder further comprises a shock-absorbing strut (32), one end of said shock-absorbing strut (32) is fixed to said upper support (10), and the other end is disposed in said cylinder body (31); the cylinder body (31) and the shock strut (32) are coaxially arranged and axially movable.
4. A strut-type dual chamber diaphragm air spring as claimed in claim 3, wherein the upper end of the piston (40) and the upper end surface of the cylinder (31) are fixedly connected with the bladder skin body (20) in a sealing manner through a second snap ring (43); the lower end part of the piston (40) is arranged on a support of the shock absorber and is connected with the support in a sealing mode through a sealing ring.
5. A strut-type dual chamber diaphragm air spring as claimed in claim 4, wherein the upper support (10) is sealingly connected to the bellows body (20) by means of a first snap ring (11).
6. A strut-type dual chamber diaphragm air spring as claimed in claim 5, wherein a cushion block (33) is further provided on said shock strut (32), said cushion block (33) being fixed to an end of said shock strut (32) adjacent to said upper strut, said cushion block (33) being directly opposite to said cylinder (31).
CN202111246376.7A 2021-10-26 2021-10-26 Strut type double-cavity membrane type air spring Pending CN114151492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111246376.7A CN114151492A (en) 2021-10-26 2021-10-26 Strut type double-cavity membrane type air spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111246376.7A CN114151492A (en) 2021-10-26 2021-10-26 Strut type double-cavity membrane type air spring

Publications (1)

Publication Number Publication Date
CN114151492A true CN114151492A (en) 2022-03-08

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Application Number Title Priority Date Filing Date
CN202111246376.7A Pending CN114151492A (en) 2021-10-26 2021-10-26 Strut type double-cavity membrane type air spring

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2334019A1 (en) * 1975-12-01 1977-07-01 Schlumberger Compteurs Shock absorber with pressure closing valve - has ball valve normally supported on perforated platform by spring
JP2001137268A (en) * 1999-11-15 2001-05-22 Nabco Ltd Air cylinder device for artificial leg
DE10236621A1 (en) * 2002-08-09 2004-03-04 Daimlerchrysler Ag Air spring system for McPherson suspension strut for automobile has air spring head provided with separate chambers selectively coupled for determining spring characteristics
JP2011117490A (en) * 2009-12-01 2011-06-16 Kyb Co Ltd Damper with air spring
DE102013212978A1 (en) * 2012-10-18 2014-04-24 Continental Teves Ag & Co. Ohg Air suspension module
CN104534007A (en) * 2015-01-07 2015-04-22 青岛思锐科技有限公司 Air spring shock absorber assembly with internally-arranged type altitude valve
CN205417069U (en) * 2016-04-01 2016-08-03 青岛浩釜铭车辆科技有限公司 Macpherson suspension is air spring for structure
CN206329663U (en) * 2016-12-14 2017-07-14 青岛浩釜铭车辆科技有限公司 A kind of multi-link structure Combined air spring
CN107035811A (en) * 2017-06-26 2017-08-11 吉林大学 Load self-adapting type stroke correlation mutative damp shock absorber
CN107869545A (en) * 2017-12-13 2018-04-03 广州溢滔钱潮减震科技股份有限公司 A kind of electronics combined vibration-damping device
CN110397692A (en) * 2019-08-16 2019-11-01 青岛霍普莱特悬架技术有限公司 A kind of adjustable integrated protection air spring vibration reduction device of rigidity
CN212839105U (en) * 2020-07-06 2021-03-30 天润智能控制***集成有限公司 Rigidity-adjustable air spring

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2334019A1 (en) * 1975-12-01 1977-07-01 Schlumberger Compteurs Shock absorber with pressure closing valve - has ball valve normally supported on perforated platform by spring
JP2001137268A (en) * 1999-11-15 2001-05-22 Nabco Ltd Air cylinder device for artificial leg
DE10236621A1 (en) * 2002-08-09 2004-03-04 Daimlerchrysler Ag Air spring system for McPherson suspension strut for automobile has air spring head provided with separate chambers selectively coupled for determining spring characteristics
JP2011117490A (en) * 2009-12-01 2011-06-16 Kyb Co Ltd Damper with air spring
DE102013212978A1 (en) * 2012-10-18 2014-04-24 Continental Teves Ag & Co. Ohg Air suspension module
CN104534007A (en) * 2015-01-07 2015-04-22 青岛思锐科技有限公司 Air spring shock absorber assembly with internally-arranged type altitude valve
CN205417069U (en) * 2016-04-01 2016-08-03 青岛浩釜铭车辆科技有限公司 Macpherson suspension is air spring for structure
CN206329663U (en) * 2016-12-14 2017-07-14 青岛浩釜铭车辆科技有限公司 A kind of multi-link structure Combined air spring
CN107035811A (en) * 2017-06-26 2017-08-11 吉林大学 Load self-adapting type stroke correlation mutative damp shock absorber
CN107869545A (en) * 2017-12-13 2018-04-03 广州溢滔钱潮减震科技股份有限公司 A kind of electronics combined vibration-damping device
CN110397692A (en) * 2019-08-16 2019-11-01 青岛霍普莱特悬架技术有限公司 A kind of adjustable integrated protection air spring vibration reduction device of rigidity
CN212839105U (en) * 2020-07-06 2021-03-30 天润智能控制***集成有限公司 Rigidity-adjustable air spring

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Application publication date: 20220308