CN102305261B - Air spring appending air chamber structure with variable volume - Google Patents
Air spring appending air chamber structure with variable volume Download PDFInfo
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- CN102305261B CN102305261B CN 201110287224 CN201110287224A CN102305261B CN 102305261 B CN102305261 B CN 102305261B CN 201110287224 CN201110287224 CN 201110287224 CN 201110287224 A CN201110287224 A CN 201110287224A CN 102305261 B CN102305261 B CN 102305261B
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- piston
- air
- air chamber
- chamber cavity
- auxiliary chamber
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Abstract
The invention discloses an air spring appending air chamber structure with variable volume for a vehicle, and the structure comprises a cylindrical appending air chamber cavity body of which the two ends are provided with openings, wherein the middle axle of the inner cavity of the appending air chamber cavity body is provided with a screw rod of which the upper end is connected with an external driving device; the screw rod in the appending air chamber cavity body is sheathed with a piston by a screw rod pair, the outer wall of the piston is tightly matched with the inner wall of the appending air chamber cavity body, and the appending air chamber cavity body is divided into an effective volume cavity and a spare volume cavity; the whole inner wall of the appending air chamber cavity body is provided with a piston rotation-limiting groove along the axial direction, and the edge of the piston is provided with a protruding part which is clamped in the piston rotation-limiting groove; the inner wall of the appending air chamber cavity body is provided with three vent grooves at interval along the axial direction; and a gap between every two vent grooves and the thickness of the piston are equal. The air chamber structure provided by the invention has the advantages of simple structure and small volume, and can be used for effectively and reliably achieving the variable volume of the appending air chamber.
Description
Technical field
The present invention relates to the auxiliary chamber of air spring for automobile, particularly the air spring additional air chamber of variable volume.
Background technology
Air bellow utilizes the compressibility of gas to realize its elastic reaction, has the function of buffering, vibration isolation, and air spring rigidity is one of critical component that affects car comfort.In order to make air suspension of automobile adapt to the various complex working conditions of Vehicle Driving Cycle, change the stiffness characteristics of spring by the volume that changes air spring additional air chamber, the volume of auxiliary chamber is remarkable on the stiffness characteristics impact, and it is large that the auxiliary chamber volume becomes, and air spring rigidity diminishes.
Number of patent application is 201010549005.1, title is " a kind of constant internal pressure air-spring additional air chamber of variable volume ", and number of patent application is 201010549434.9, title is " a kind of air spring additional air chamber of variable volume ", all auxiliary chamber is divided into eight chambers, its defective is: it is comparatively complicated to change volume structure, and leakproofness also is difficult to be guaranteed.
Summary of the invention
The present invention is directed to the existing air spring additional air chamber volume complicated present situation that in the change process, shifts gears, a kind of air spring additional air chamber of variable volume simple in structure is provided.
The technical solution used in the present invention is: the cylindrical shape auxiliary chamber cavity that comprises a both ends open, its upper and lower port upper and lower seal cover board that is tightly connected respectively, the inner chamber axis place of auxiliary chamber cavity arranges a leading screw that passes top cover labyrinth plate and upper end connection external driver device, the lower end captive joint lower seal cover plate of leading screw; With piston of lead screw pair socket, piston outer wall and auxiliary chamber cavity inner wall closely cooperate, and the auxiliary chamber cavity is divided into effective volume chamber and cavity volume for subsequent use on the leading screw in the auxiliary chamber cavity; Piston limit turn trough is set on the whole inwall of auxiliary chamber cavity vertically, in the edge of piston an outshot is set, outshot is stuck in the described piston limit turn trough; Three air channels are established at the interval vertically on the inwall of auxiliary chamber cavity, and the gap between per two air channels equates with the thickness of piston.
Further, the first air channel in three air channels is a near lower seal cover plate and distance between the two, the second air channel middle and and the first air channel between the gap be b, the 3rd air channel is d near top cover labyrinth plate and distance between the two, is provided with boss at the lower seal cover plate, and the thickness of boss is e, midway location at piston is provided with upper and lower boss, the thickness of described upper and lower boss is respectively f, g, and a=e+f+b, d=b+g.
The invention has the beneficial effects as follows: 1, in the process that changes the auxiliary chamber volume, guaranteed the stable of air bellow internal pressure, avoid causing because of the change of auxiliary chamber volume the change of suspension system height, can further enlarge the variation range of air spring rigidity, and need not the process that complicated control setup is finished the volume change; In addition, compare with existing adjusting auxiliary chamber device in volume, device takes up space and greatly reduces.2, simple in structure, small volume, manufacturing technique requirent is low, and easy to maintenance and effective failure-free has been realized the variable of auxiliary chamber volume, under the different operating modes when Vehicle Driving Cycle, improves riding comfort and the travelling comfort of vehicle.3, the present invention not only is confined to be applied on the vehicle suspension system, and is all applicable for the air bellow of installing and using in mechanical equipment, guideway vehicle.
Description of drawings
Structure for a more complete understanding of the present invention and principle of work are described in further detail the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is outside drawing of the present invention;
Fig. 2 is inner structure scheme drawing of the present invention;
Fig. 3 is the revolved section enlarged drawing of auxiliary chamber cavity 1 and piston 2 structures among Fig. 2.
Among the figure: 1-auxiliary chamber cavity; 2-piston; 3-three air channels; 4-connecting line; 5-lower seal cover plate; 6-leading screw; 7-piston limit turn trough; 8-sealing arrangement; 9-top cover labyrinth plate; 10-leading screw and actuating device junction; 11-effective volume chamber; 12-cavity volume for subsequent use; 13-outshot.
The specific embodiment
Referring to Fig. 1-2, the present invention includes a columnar auxiliary chamber cavity 1, the both ends open of auxiliary chamber cavity 1, the end opening lower seal cover plate 5 that is tightly connected, the top cover labyrinth plate 9 that is tightly connected suitable for reading guarantees the leakproofness of auxiliary chamber cavity 1.Lower seal cover plate 5 connects an end of connecting line 4, and connecting line 4 one ends are communicated with auxiliary chamber cavity 1, and the other end of connecting line 4 is communicated with the air bellow body.
Inner chamber axis place at auxiliary chamber cavity 1 arranges a rhizoid thick stick 6, the lower end of leading screw 6 is fixedly connected on the lower seal cover plate 5, the hole on the seal cover board 9 is passed in the upper end of leading screw 6, stretch out outside auxiliary chamber cavity 1, be connected with the actuating device that is installed in auxiliary chamber cavity 1 outside by actuating device junction 10, actuating device drives leading screw 6 rotations, and its drive form can be hydraulic pressure, electronic, crank connecting link or other type of drive.Sealing arrangement 8 sealings are sentenced in hole on seal cover board 9, guarantee that auxiliary chamber cavity 1 is without gas leakage.
Piston 2 of leading screw 6 sockets in auxiliary chamber cavity 1, piston 2 is enclosed within on the leading screw 6, be connected by lead screw pair between piston 2 and the leading screw 6, when leading screw 6 rotation, piston 2 axially moves back and forth along leading screw 6 under the drive of leading screw 6, and the rotation of actuating device is converted into the straight-line motion of piston 2 in auxiliary chamber cavity 1.Piston 2 outer walls and auxiliary chamber cavity 1 inwall closely cooperate, thereby make piston 2 that auxiliary chamber cavity 1 is divided into effective volume chamber 11 and cavity volume for subsequent use 12 these two chambers.Effective volume chamber 11 is auxiliary chamber volumes of actual participation work, and cavity volume 12 for subsequent use is when effective volume chamber 11 is large not, can to the direction mobile piston 2 of cavity volume 12 for subsequent use, make the volume of cavity volume 12 for subsequent use also participate in work.Connecting line 4 is communicated with effective volume chamber 11, and auxiliary chamber cavity 1 is connected with the air bellow body by connecting line 4, is used for the airiness between assurance auxiliary chamber cavity 1 and the main gas tank.
A piston limit turn trough 7 is set on auxiliary chamber cavity 1 whole inwall vertically, and the degree of depth of piston limit turn trough 7 is less than the wall thickness of auxiliary chamber cavity 1.Edge at piston 2 arranges an outshot 13, outshot 13 on the edge of this piston limit turn trough 7 and piston 2 matches, outshot 13 is stuck in the piston limit turn trough 7, is used for the rotation of limited piston 2, guarantee that piston 2 does not rotate with leading screw 6 in motion process.
Referring to Fig. 2-3, three air channels 3 are established at the interval vertically on auxiliary chamber cavity 1 inwall, guarantee the air inerchange between effective cavity volume 11 and the cavity volume for subsequent use 12 when moving for piston 2, make the air pressure balance of two chambers.These three air channels 3 are respectively the first air channel 3-1, the second air channel 3-2 and the 3rd air channel 3-3.Referring to Fig. 5, close lower seal cover plate 5, the first air channel 3-1 of the first air channel 3-1 are a apart from the distance of lower seal cover plate 5.In the middle of the second air channel 3-2 was positioned at, the gap between the second air channel 3-2 and the first air channel 3-1 was b.The 3rd air channel 3-3 is c near the gap between top cover labyrinth plate 9, the three air channel 3-3 and the second air channel 3-2, and the distance between the 3rd air channel 3-3 and the top cover labyrinth plate 9 is d.Be provided with boss at lower seal cover plate 5, the thickness of this boss is e.Piston 2 midways location are provided with upper and lower boss, and the thickness of upper and lower boss is respectively f and g.Wherein, gap b and gap c are equal, and equal the thickness of piston 2, and namely the gap between per two air channels equates with the thickness of piston 2; Apart from a=e+f+b, apart from d=b+g.The length of three air channels 3 determines the variation yardstick of auxiliary chamber effective volume, according to demand flexible choice.
When the present invention works, drive leading screw 6 rotations by lead-screw driving device, owing to be provided with piston limit turn trough 7, so leading screw 6 rotates and drives just that piston 2 moves up and down and nonrotational.Actuating device can be guaranteed piston 2 from an intermittent motion of air channel 3 to another gap, and is then static.Air channel 3 is used for gas exchange between effective volume chamber 11 and the cavity volume for subsequent use 12, guarantees that both sides air pressure equates.When piston 2 remained static, lead-screw driving device made piston 2 rest on the gap location of three air channels 3, makes auxiliary chamber cavity 1 interior without air inerchange, and gas circuit is closed.For example: when piston 2 is in the gap location of the first air channel 3-1 and the second air channel 3-2, because gap b equates with piston 2 thickness, at this moment, piston 2 fits tightly with auxiliary chamber cavity 1 inwall, piston 2 has intercepted the air inerchange between effective volume chamber 11 and the cavity volume for subsequent use 12, so the time auxiliary chamber cavity 1 interior without air inerchange, guarantee the constant of auxiliary chamber and main gas tank's internal gas pressure; When change from small to big in effective volume chamber 11, air spring rigidity diminishes.
Claims (2)
1. the air spring auxiliary air chamber structure of a variable volume, the cylindrical shape auxiliary chamber cavity (1) that comprises a both ends open, its upper and lower port upper and lower seal cover board (9,5) that is tightly connected respectively, it is characterized in that: the inner chamber axis place of auxiliary chamber cavity (1) arranges a leading screw (6) that passes top cover labyrinth plate (9) and upper end connection external driver device, the lower end captive joint lower seal cover plate (5) of leading screw (6); Leading screw (6) in auxiliary chamber cavity (1) is upper with a lead screw pair socket piston (2), piston (2) outer wall and auxiliary chamber cavity (1) inwall closely cooperate, and auxiliary chamber cavity (1) is divided into effective volume chamber (11) and cavity volume for subsequent use (12); Piston limit turn trough (7) is set on the whole inwall of auxiliary chamber cavity (1) vertically, in the edge of piston (2) outshot (13) is set, described outshot (13) is stuck in the described piston limit turn trough (7); Three air channels (3) are established at the interval vertically on the inwall of auxiliary chamber cavity (1), and the gap between per two air channels equates with the thickness of piston (2).
2. the air spring auxiliary air chamber structure of a kind of variable volume according to claim 1, it is characterized in that: the first air channel (3-1) in three air channels (3) is a near lower seal cover plate (5) and distance between the two, the second air channel (3-2) be positioned in the middle of and and the first air channel (3-1) between the gap be b, the 3rd air channel (3-3) is d near top cover labyrinth plate (9) and distance between the two, be provided with boss at lower seal cover plate (5), the thickness of boss is e, midway location at piston (2) is provided with, lower bulge, on described, the thickness of lower bulge is respectively f, g, and a=e+f+b, d=b+g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110287224 CN102305261B (en) | 2011-09-26 | 2011-09-26 | Air spring appending air chamber structure with variable volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110287224 CN102305261B (en) | 2011-09-26 | 2011-09-26 | Air spring appending air chamber structure with variable volume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102305261A CN102305261A (en) | 2012-01-04 |
| CN102305261B true CN102305261B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110287224 Expired - Fee Related CN102305261B (en) | 2011-09-26 | 2011-09-26 | Air spring appending air chamber structure with variable volume |
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| CN (1) | CN102305261B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836103B (en) * | 2012-11-21 | 2016-03-30 | 重庆长安汽车股份有限公司 | A kind of rear overhang rack lining |
| CN108518440A (en) * | 2018-06-14 | 2018-09-11 | 海南大学 | A kind of shared gas chamber of the air suspension of variable volume |
| CN111963614B (en) * | 2020-08-24 | 2022-02-22 | 南京丹枫机械科技有限公司 | Viscous damper |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4844428A (en) * | 1987-03-31 | 1989-07-04 | Aisin Seiki Kabushiki Kaisha | Air spring assembly |
| US5255935A (en) * | 1990-03-09 | 1993-10-26 | Nippondenso Co., Ltd. | Air suspension system |
| CN201240242Y (en) * | 2008-07-29 | 2009-05-20 | 郭孔辉 | Load sensing variable damping or controllable load sensing variable damping shock mitigation system |
| CN202280776U (en) * | 2011-09-26 | 2012-06-20 | 江苏大学 | Air spring auxiliary air chamber structure with variable volume |
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2011
- 2011-09-26 CN CN 201110287224 patent/CN102305261B/en not_active Expired - Fee Related
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| CN102305261A (en) | 2012-01-04 |
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Granted publication date: 20130123 Termination date: 20130926 |