CN204878497U - Instead draw controllable air spring - Google Patents
Instead draw controllable air spring Download PDFInfo
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- CN204878497U CN204878497U CN201520651805.2U CN201520651805U CN204878497U CN 204878497 U CN204878497 U CN 204878497U CN 201520651805 U CN201520651805 U CN 201520651805U CN 204878497 U CN204878497 U CN 204878497U
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- piston
- connecting head
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- cylinder block
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- 239000007787 solid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 241000309551 Arthraxon hispidus Species 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses an instead draw controllable air spring comprises cylinder block and piston built -in, the piston built -in is arranged in the cylinder block, the piston built -in includes first piston rod, second piston rod and hinge joint head, and hinge joint head center department installs the case, and the first both ends of hinge joint are connected with first piston rod and second piston rod respectively, form inclosed cavity after the hinge joint head is connected with the second piston rod, install the spring in inclosed cavity, and spring and case are connected. Place to have in airtight cavity through the spring and prevent the dead function of case gliding card, tensile or compress the piston built -in in, inside and external can the poor piston built -in that reaches of generate pressure in the inside effect that can fix a position of cylinder block, guarantee that the piston built -in can both reach fixed function on any position of cylinder block inner wall, improved the utility model discloses a result of use.
Description
Technical field
The utility model relates to air spring field, particularly a kind of reverse drawing controllable gas spring.
Background technique
In use, the spool being arranged in piston connecting head central through bore place easily glides air spring in the market, could must reset under the effect of pressurized gas; The assembling hole slot of air spring second piston rod on market, is movable for spool with the remaining cavity of the mode of packing filling, adds fabricating cost; The built-in piston apparatus of air spring on market in use, can only be inflated with one end of piston rod, reduce utilization efficiency.Therefore, air spring in the market also exists poor sealing, and fabricating cost is high, utilization efficiency low defect.
Model utility content
The purpose of this utility model provides a kind of reverse drawing controllable gas spring, solves one or more in above-mentioned prior art problem.
The utility model discloses a kind of reverse drawing controllable gas spring, be made up of cylinder block and piston built-in; Piston built-in is placed in cylinder block; Piston built-in comprises first piston bar, the second piston rod and piston connecting head, piston connecting head center is provided with spool, piston connecting head two ends are connected with first piston bar and the second piston rod respectively, airtight cavity is formed after piston connecting head is connected with the second piston rod, be provided with spring in airtight cavity, spring is connected with spool.Being positioned in closed cavity to have by spring prevents spool to glide stuck function, when stretching or compression piston built-in, inner and the external world can produce pressure difference and reach piston built-in in the inner orientable effect of cylinder block, ensure that piston built-in can reach fixing function on any position of cylinder block inwall, improve using effect of the present utility model.
In some embodiments, first piston bar is arranged with the first outside framework oil seal, the second upper cover of piston rod is provided with the second outside framework oil seal, and the external margin of the first outside framework oil seal and the external margin of the second outside framework oil seal are close on the inwall of cylinder block.This design can make first piston bar and the second piston rod two ends inflate, and adds place's inflation inlet, improves utilization efficiency.
In some embodiments, one end that the second piston rod is connected with piston connecting head is provided with fitting recess and remaining part is solid body.This design can save the manufacture cost of the second piston rod, ensures that the second piston rod is completely not closed, air tight with one end of piston connecting head.
In some embodiments, be equipped with controlling rod in the middle of first piston bar, one end that first piston bar is not connected with piston connecting head is provided with outside thread.This design can make first piston bar and cylinder joint outer part be connected and fixed, and facilitates the Coupled motion of air spring to operate.
In some embodiments, piston connecting head center is provided with through hole, and spool is arranged in described through hole, and spool one end is connected with spring, and the other end is connected with controlling rod packaged type.Forming spool one end that the frustoconic shape spring housing in airtight cavity is located at after piston connecting head is connected with the second piston rod is on dome-shaped end face, and this design can make the reset of the situation lower valve core that the second piston rod intrinsic pressure is lower.
In some embodiments, also comprise rubber ring, piston connecting head outer surface offers annular slot, and rubber ring is arranged in annular slot, ensures that the piston apparatus that air spring is built-in and cylinder body closely cooperate.
In some embodiments, piston connecting head is provided with overdraught through hole, and fitting recess is provided with downstream through hole, and downstream through hole communicates with overdraught through hole, ensures that cylinder block air pressure inside is stablized.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of reverse drawing controllable gas spring of a kind of mode of execution of the present utility model;
Fig. 2 is the first piston bar of a kind of reverse drawing controllable gas spring of a kind of mode of execution of the present utility model connects the second piston rod structural representation by piston connecting head;
Fig. 3 is the structural representation of the piston connecting head of a kind of reverse drawing controllable gas spring of a kind of mode of execution of the present utility model;
Fig. 4 is the structural representation of the second piston rod of a kind of reverse drawing controllable gas spring of a kind of mode of execution of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in more detail.
As depicted in figs. 1 and 2, a kind of reverse drawing controllable gas spring, is made up of cylinder block 1 and piston built-in, piston built-in is placed in cylinder block 1, piston built-in comprises first piston bar 2, second piston rod 3 and piston connecting head 4, piston connecting head 4 two ends respectively with first piston bar 2 and the second piston rod 3 seamless welding, specifically, piston connecting head 4 is cylindrical, its one end offers the first fixed cover 43, the other end offers the second fixed cover 45, first piston bar 2 and the first fixed cover 43 seamless welding, second piston rod 3 and the second fixed cover 45 seamless welding, piston connecting head 4 is connected the airtight cavity of rear formation 13 with the second piston rod 3, this cavity 13 is that fitting recess 33 coordinates with the second fixed cover 45 and formed, in airtight cavity 13, spring 10 is installed, spring 10 is frustoconic shape.Piston connecting head 4 center is provided with through hole 44, the diameter of through hole 44 is slightly larger than the diameter of valve core rod, spool 9 is arranged in through hole 44, the length of spool 9 is slightly less than the length of piston connecting head 4, one end of spool 9 is dome shape and diameter is greater than the diameter of valve core rod, can ensure that spool 9 to be placed in through hole 44 and can to move around in through hole 44, play the effect of transmitting the pressure that controlling rod 8 produces.The dome-shaped one end of spool 8 is connected with spring 10, and spring 10 is sheathed on dome shape one end of spool 9, can ensure the reset of the pressure of in the second piston rod 3 at lower situation lower valve core 9.Valve core rod is arranged with rubber sheet gasket 11 and metallic shim 12, can ensures that spool 9 the other end is connected with controlling rod 8 packaged type.
First piston bar 2 is arranged with the first outside framework oil seal 5, first outside framework oil seal 5 is made for rubber material, when high-pressure aerated, the lip of the first outside framework oil seal 5 can be opened, and first piston bar 2 adopts an outside framework oil seal, substitutes the structure that original guide pin bushing combines with O RunddichtringO, structure is simple, easily manufactured, save cost, also play the effect supported with air spring cylinder block simultaneously.First piston bar 2 is hollow article, and described hollow article is in axially arranging, and controlling rod 8 is arranged on the inside of hollow article, and its diameter is slightly smaller than the internal diameter of hollow article, can ensure controlling rod 8 freely activity under pressure.One end that first piston bar 2 is not connected with piston connecting head 4 is provided with outside thread 14, first piston bar 2 is connected and fixed by outside thread 14 and cylinder block 1 joint outer part, under the effect of external force and air pressure inside, facilitate the entirety combined operation back and forth in cylinder block 1 of piston built-in.
As shown in Figure 3, one end that second piston rod 3 is connected with piston connecting head 4 has dug a fitting recess 33 and remaining part is solid body, ensure that the completely closed of one end that the second piston rod 3 is not connected with piston connecting head 4, can not leak gas, by digging fitting recess 33, substituted for original needs at the inner first overall fluting of the second piston rod 3, the manufacturing process that the packings such as rear use steel ball are filled, manufacturing process in the past not only production difficulty is large, and second one end of not being connected with piston connecting head 4 of piston rod 3 easily leak gas, manufacture method engine lathe of the present utility model can be processed, save manufacture cost, be conducive to the further penetration and promotion of the utility model.Second piston rod 3 being arranged with the second outside framework oil seal 6, second outside framework oil seal 6 for rubber material makes, substantially more identical with the first outside framework oil seal 5 function and structure than the second outside framework oil seal 6, does not repeat them here.One end that second piston rod 3 is connected with piston connecting head 4 is provided with fitting recess 33, fitting recess 33 is columniform pilot hole, specifically, this fitting recess 33 assembles the said closed cavity 13 of rear formation with piston connecting head 4, facilitate laying and being that the resilience of spring 10 provides buffer space of spring 10, be beneficial to the reset of spool 9, fitting recess 33 is provided with downstream through hole 31, piston connecting head 4 is provided with overdraught through hole 41, downstream through hole 31 communicates with overdraught through hole 41, ensure that the balance of air spring cylinder interior pressure.
Piston connecting head 4 outer surface offers annular slot 42, and rubber ring 7 is arranged in annular slot 42, ensures that the piston apparatus that air spring is built-in and cylinder block 1 closely cooperate.By spool 9 open under the effect of pressure difference with reset closed, closely cooperating simultaneously by the first outside framework oil seal 5, second outside framework oil seal 6 and rubber ring 7 and cylinder block 1 inwall, reach the effect that any position of piston built-in in cylinder block 1 can reach location, expand using scope of the present utility model and using effect further.
The above is only optimal way of the present utility model; it should be pointed out that to those skilled in the art, under the prerequisite not departing from the utility model creation design; can also make some similar distortion and improvement, these also should be considered as within protection domain of the present utility model.
Claims (7)
1. a reverse drawing controllable gas spring, is made up of cylinder block (1) and piston built-in, described piston built-in is placed in cylinder block (1), it is characterized in that: described piston built-in comprises first piston bar (2), second piston rod (3) and piston connecting head (4), described piston connecting head (4) center is provided with spool (9), described piston connecting head (4) two ends are connected with first piston bar (2) and the second piston rod (3) respectively, airtight cavity (13) is formed after described piston connecting head (4) is connected with the second piston rod (3), in described airtight cavity (13), spring (10) is installed, described spring (10) is connected with spool (9).
2. a kind of reverse drawing controllable gas spring according to claim 1, it is characterized in that: described first piston bar (2) is arranged with the first outside framework oil seal (5), described second piston rod (3) is arranged with the second outside framework oil seal (6), and the external margin of described first outside framework oil seal (5) and the external margin of the second outside framework oil seal (6) are close on the inwall of cylinder block (1).
3. a kind of reverse drawing controllable gas spring according to claim 1, is characterized in that: one end that described second piston rod (3) is connected with piston connecting head (4) is provided with fitting recess (33) and remaining part is solid body.
4. a kind of reverse drawing controllable gas spring according to claim 1, it is characterized in that: be equipped with controlling rod (8) in the middle of described first piston bar (2), one end that described first piston bar (2) is not connected with piston connecting head (4) is provided with outside thread (14).
5. a kind of reverse drawing controllable gas spring according to claim 1, it is characterized in that: described piston connecting head (4) center is provided with through hole (44), described spool (9) is arranged in described through hole (44), described spool (9) one end is connected with spring (10), and the other end is connected with controlling rod (8) packaged type.
6. a kind of reverse drawing controllable gas spring according to claim 5, it is characterized in that: also comprise rubber ring (7), described piston connecting head (4) outer surface offers annular slot (42), and described rubber ring (7) is arranged in annular slot (42).
7. a kind of reverse drawing controllable gas spring according to claim 3, it is characterized in that: described piston connecting head (4) is provided with overdraught through hole (41), described fitting recess (33) is provided with downstream through hole (31), and described downstream through hole (31) communicates with overdraught through hole (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520651805.2U CN204878497U (en) | 2015-08-21 | 2015-08-21 | Instead draw controllable air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520651805.2U CN204878497U (en) | 2015-08-21 | 2015-08-21 | Instead draw controllable air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878497U true CN204878497U (en) | 2015-12-16 |
Family
ID=54822872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520651805.2U Expired - Fee Related CN204878497U (en) | 2015-08-21 | 2015-08-21 | Instead draw controllable air spring |
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| Country | Link |
|---|---|
| CN (1) | CN204878497U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345549A (en) * | 2016-05-04 | 2017-11-14 | 上海汽车集团股份有限公司 | Suspension system and its damper |
| CN112211941A (en) * | 2020-09-10 | 2021-01-12 | 东风汽车集团有限公司 | Adjustable air spring |
-
2015
- 2015-08-21 CN CN201520651805.2U patent/CN204878497U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345549A (en) * | 2016-05-04 | 2017-11-14 | 上海汽车集团股份有限公司 | Suspension system and its damper |
| CN107345549B (en) * | 2016-05-04 | 2019-05-24 | 上海汽车集团股份有限公司 | Suspension system and its damper |
| CN112211941A (en) * | 2020-09-10 | 2021-01-12 | 东风汽车集团有限公司 | Adjustable air spring |
| CN112211941B (en) * | 2020-09-10 | 2021-12-21 | 东风汽车集团有限公司 | An adjustable gas spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20180821 |