CN102305261A - 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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- CN102305261A CN102305261A CN201110287224A CN201110287224A CN102305261A CN 102305261 A CN102305261 A CN 102305261A CN 201110287224 A CN201110287224 A CN 201110287224A CN 201110287224 A CN201110287224 A CN 201110287224A CN 102305261 A CN102305261 A CN 102305261A
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- chamber cavity
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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 pneumatic spring auxiliary chamber of variable volume.
Background technique
Pneumatic spring 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 influences car comfort.In order to make air suspension of automobile adapt to the various complex working conditions of vehicle driving; Change the stiffness characteristics of spring through the volume that changes the pneumatic spring auxiliary chamber; The volume of auxiliary chamber is remarkable to the stiffness characteristics influence, and it is big that the auxiliary chamber volume becomes, and air spring rigidity diminishes.
Number of patent application is 201010549005.1, title is " a kind of variable volume constant in press the pneumatic spring auxiliary chamber "; And number of patent application is 201010549434.9, title is " a kind of pneumatic spring auxiliary chamber of variable volume "; All auxiliary chamber is divided into eight chambers; Its defective is: it is comparatively complicated to change volume structure, and seal also is difficult to be guaranteed.
Summary of the invention
The present invention is directed to the existing pneumatic spring auxiliary chamber volume complicated present situation that in the change process, shifts gears, a kind of pneumatic spring auxiliary chamber of variable volume simple in structure is provided.
The technological scheme that the present invention adopts is: the cylindrical shape auxiliary chamber cavity that comprises a both ends open; Its upper and lower port upper and lower sealed cover that is tightly connected respectively; The inner chamber axis place of auxiliary chamber cavity is provided with a leading screw that passes top cover labyrinth plate and upper end connection external driver device, and the lower end of leading screw is fixedly connected the lower seal cover plate; With piston of lead screw pair socket, piston outer wall and auxiliary chamber cavity inner wall closely cooperate on the leading screw in the auxiliary chamber cavity, and the auxiliary chamber cavity is divided into actual volume chamber and subsequent use cavity volume; Piston limit turn trough is set on the whole inwall of auxiliary chamber cavity vertically, in the edge of piston a projection is set, projection is stuck in the said piston limit turn trough; Axially spaced-apart is established three vent slots in the inwall upper edge of auxiliary chamber cavity, and the gap between per two vent slots equates with the thickness of piston.
Further; First vent slot in three vent slots is a near lower seal cover plate and distance between the two; Second vent slot middle and and first vent slot between the gap be b; The 3rd vent slot is d near top cover labyrinth plate and distance between the two, on the lower seal cover plate, is provided with boss, and the thickness of boss is e; Be provided with upper and lower boss in the neutral position of piston; The thickness of said 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 pneumatic spring internal pressure; Avoid causing the change of suspension system height because of the change of auxiliary chamber volume; Can further enlarge the excursion of air spring rigidity, and need not the process that complex control apparatus is accomplished the volume change; In addition, compare with existing adjusting auxiliary chamber device in volume, device takes up space and reduces greatly.2, simple in structure, volume is less, and manufacturing technique requirent is low, and is easy to maintenance and effectively realized the variable of auxiliary chamber volume reliably, under the different operating modes when vehicle driving, improves the run smoothness and the riding comfort of vehicle.3, the present invention not only is confined to be applied on the vehicle suspension system, all is suitable for for the pneumatic spring of in machinery, rail vehicle, installing and using.
Description of drawings
In order more fully to understand structure of the present invention and working principle, the present invention is done further explain below in conjunction with accompanying drawing and embodiment.
Fig. 1 is an outline drawing of the present invention;
Fig. 2 is an internal structure schematic representation of the present invention;
Fig. 3 is the revolved section enlarged view of auxiliary chamber cavity 1 and piston 2 structures among Fig. 2.
Among the figure: 1-auxiliary chamber cavity; 2-piston; 3-three vent slots; 4-connecting pipeline; 5-lower seal cover plate; 6-leading screw; 7-piston limit turn trough; 8-seal arrangement; 9-top cover labyrinth plate; 10-leading screw and drive unit joint; 11-actual volume chamber; 12-subsequent use cavity volume; 13-projection.
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 seal of auxiliary chamber cavity 1.The end that lower seal cover plate 5 connects connecting pipeline 4 makes connecting pipeline 4 one ends communicate with auxiliary chamber cavity 1, and the other end of connecting pipeline 4 is communicated with the pneumatic spring body.
Inner chamber axis place at auxiliary chamber cavity 1 is provided with 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 sealed cover 9 is passed in the upper end of leading screw 6; Stretch out outside auxiliary chamber cavity 1; Be connected with the drive unit that is installed in auxiliary chamber cavity 1 outside through drive unit joint 10; Drive unit drives leading screw 6 rotations, and its drive form can be hydraulic pressure, electronic, crank-connecting rod or other driving mode.Seal arrangement 8 sealings are sentenced in hole on sealed cover 9, guarantee that auxiliary chamber cavity 1 does not have gas leakage.
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 is provided with a projection 13; Projection 13 on the edge of this piston limit turn trough 7 and piston 2 matches; Projection 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 movement process.
Referring to Fig. 2-3, establish three vent slots 3 at auxiliary chamber cavity 1 inwall upper edge axially spaced-apart, guarantee the air exchange between actual volume chamber 11 and the subsequent use cavity volume 12 when being used for piston 2 and moving, make the air pressure balance of two chambers.These three vent slots 3 are respectively the first vent slot 3-1, the second vent slot 3-2 and the 3rd vent slot 3-3.Referring to Fig. 5, close lower seal cover plate 5, the first vent slot 3-1 of the first vent slot 3-1 are a apart from the distance of lower seal cover plate 5.In the middle of the second vent slot 3-2 was positioned at, the gap between the second vent slot 3-2 and the first vent slot 3-1 was b.The 3rd vent slot 3-3 is c near the gap between top cover labyrinth plate 9, the three vent slot 3-3 and the second vent slot 3-2, and the distance between the 3rd vent slot 3-3 and the top cover labyrinth plate 9 is d.On lower seal cover plate 5, be provided with boss, the thickness of this boss is e.Piston 2 neutral positions 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 the gap between promptly per two vent slots equates with the thickness of piston 2; Apart from a=e+f+b, apart from d=b+g.The variation yardstick of the length decision auxiliary chamber actual volume of three vent slots 3 can be selected according to demand flexibly.
When the present invention works, drive leading screw 6 rotations, 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 nonrotationally by lead-screw driving device.Drive unit can guarantee piston 2 from an intermittent motion of vent slot 3 to another gap, static then.Vent slot 3 is used for gas exchange between actual volume chamber 11 and the subsequent use cavity volume 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 vent slots 3, makes no air exchange in the auxiliary chamber cavity 1, and gas circuit is closed.For example: when piston 2 is in the gap location of the first vent slot 3-1 and the second vent slot 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 exchange between actual volume chamber 11 and the subsequent use cavity volume 12; So the time auxiliary chamber cavity 1 in no air exchange, assurance auxiliary chamber and main gas tank's internal air pressure constant; When effective cavity volume 11 changed from small to big, air spring rigidity diminished.
Claims (2)
1. the pneumatic spring auxiliary 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 sealed cover (9,5) that is tightly connected respectively; It is characterized in that: the inner chamber axis place of auxiliary chamber cavity (1) is provided with a leading screw (6) that passes top cover labyrinth plate (9) and upper end connection external driver device, and the lower end of leading screw (6) is fixedly connected lower seal cover plate (5); Leading screw (6) in auxiliary chamber cavity (1) is gone up with a piston of lead screw pair socket (2); Piston (2) outer wall and auxiliary chamber cavity (1) inwall closely cooperate, and auxiliary chamber cavity (1) is divided into actual volume chamber (11) and subsequent use cavity volume (12); Piston limit turn trough (7) is set on the whole inwall of auxiliary chamber cavity (1) vertically, in the edge of piston (2) projection (13) is set, said projection (13) is stuck in the said piston limit turn trough (7); Axially spaced-apart is established three vent slots (3) in the inwall upper edge of auxiliary chamber cavity (1), and the gap between per two vent slots equates with the thickness of piston (2).
2. the pneumatic spring auxiliary chamber structure of a kind of variable volume according to claim 1; It is characterized in that: first vent slot (3-1) in three vent slots (3) is a near lower seal cover plate (5) and distance between the two; Second vent slot (3-2) be positioned in the middle of and and first vent slot (3-1) between the gap be b; The 3rd vent slot (3-3) is d near top cover labyrinth plate (9) and distance between the two; On lower seal cover plate (5), be provided with boss; The thickness of boss is e; Neutral position at piston (2) is provided with; Lower convex platform; On said; The thickness of lower convex platform 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 true CN102305261A (en) | 2012-01-04 |
| CN102305261B 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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| Country | Link |
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| CN (1) | CN102305261B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836103A (en) * | 2012-11-21 | 2014-06-04 | 重庆长安汽车股份有限公司 | Automobile rear suspension bushing |
| 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 |
| CN111649088A (en) * | 2020-05-25 | 2020-09-11 | 安徽合力股份有限公司 | Air spring and cab side door using same |
| CN111963614A (en) * | 2020-08-24 | 2020-11-20 | 南京丹枫机械科技有限公司 | Novel viscous damper |
| WO2024098218A1 (en) * | 2022-11-07 | 2024-05-16 | 华为技术有限公司 | Air chamber, air spring, air suspension system, and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63318336A (en) * | 1987-03-31 | 1988-12-27 | Aisin Seiki Co Ltd | Air spring device |
| 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 |
-
2011
- 2011-09-26 CN CN 201110287224 patent/CN102305261B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63318336A (en) * | 1987-03-31 | 1988-12-27 | Aisin Seiki Co Ltd | Air spring device |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836103A (en) * | 2012-11-21 | 2014-06-04 | 重庆长安汽车股份有限公司 | Automobile rear suspension bushing |
| 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 |
| CN111649088A (en) * | 2020-05-25 | 2020-09-11 | 安徽合力股份有限公司 | Air spring and cab side door using same |
| CN111963614A (en) * | 2020-08-24 | 2020-11-20 | 南京丹枫机械科技有限公司 | Novel viscous damper |
| WO2024098218A1 (en) * | 2022-11-07 | 2024-05-16 | 华为技术有限公司 | Air chamber, air spring, air suspension system, and vehicle |
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| Publication number | Publication date |
|---|---|
| CN102305261B (en) | 2013-01-23 |
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Granted publication date: 20130123 Termination date: 20130926 |