CN101749298A - Three-position power cylinder - Google Patents
Three-position power cylinder Download PDFInfo
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- CN101749298A CN101749298A CN201010118513A CN201010118513A CN101749298A CN 101749298 A CN101749298 A CN 101749298A CN 201010118513 A CN201010118513 A CN 201010118513A CN 201010118513 A CN201010118513 A CN 201010118513A CN 101749298 A CN101749298 A CN 101749298A
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Abstract
The invention relates to a three-position power cylinder, which can be a hydraulic cylinder or an air cylinder. The main scheme of the three-position power cylinder is as follows: the three-position power cylinder comprises a cylinder body, which is provided with only one piston rod, a big chamber is arranged in the cylinder body, a big piston is arranged in the big chamber, and is provided with a chamber for a small piston, the small piston is fixed on the piston rod, and the big piston pushes the small piston to drive the piston rod to move to a fixed position; the small piston moves again to drive the piston rod to move to the next fixed position; and the small piston can be restored by a spring or the pressure of medium. The three-position power cylinder comprises an initial position, a first fixed position and a second fixed position, shock-absorbing rubber rings are used for buffering in the process of motion, consequently, impact cannot occur, positioning is accurate, the service life is long, and the defects of the prior three-position cylinder can be avoided. Since the three-position power cylinder is provided with only one piston rod, the coaxiality is good, and the three-position power cylinder is applicable to a mechanism which needs to be accurately fixed at three positions and has high motion frequency, such as an automatic gear-selecting and shift mechanism on an automobile gearbox.
Description
Technical field
The present invention relates to three-position power cylinder, this ram both can be an oil hydraulic cylinder, also can be cylinder.
Background technique
Automatically choosing on the existing automobile gearbox, gearshift mechanism, adopt three-position power cylinder, this three-position power cylinder gets structure as shown in Figure 1: be sequentially with former and later two chambers in cylinder body 2, the center line of former and later two chambers is on same axis, before, latter two chamber is respectively equipped with first piston 3, second piston 5, being connected with first piston bar 1 on the first piston 3 reaches outside the cylinder body, be connected with second piston rod, 4 roof pressures on second piston 5 in the end of first piston bar (working state), because motion frequency height, second piston rod not only impacts the end of first piston bar, cause distortion and wearing and tearing after time is long, the degree of accuracy of influence location causes choosing automatically on the automobile gearbox, gearshift mechanism is dumb or not in place.Existing three-position power cylinder is used for accurately location and three positions and the high mechanism of motion frequency, as choosing, gearshift mechanism etc. automatically on the automobile gearbox, has the not high hidden danger of degree of accuracy of locating.
Summary of the invention
In order to solve the problem that long back of existing three-position power cylinder time influences positioning precision, the present invention proposes a kind of three-position power cylinder, and it both can be an oil hydraulic cylinder, also can be cylinder.
Inventive concept: a kind of three-position power cylinder, comprise cylinder body, only be provided with a piston rod, in cylinder body, be provided with a big chamber, be provided with a big piston in big chamber, be provided with the chamber of small piston on big piston, small piston and piston rod are fixed, big piston promotes small piston, drives piston rod and moves to a position location; Small piston moves once more and drives piston rod and move to next position location; Resetting of small piston both can be adopted spring, also can utilize pressure medium to realize.
For this reason, technological scheme of the present invention is: a kind of three-position power cylinder comprises cylinder body, it is characterized in that: only be provided with a piston rod, be provided with a big chamber in cylinder body, piston rod passes cylinder body, stretch out from the cylinder body one or both ends, lead in the pilot hole of piston rod in the cylinder body at big chamber two ends; In big chamber, be provided with a big piston, the yielding rubber circle is housed in the big piston front and rear end, big piston is provided with the little cylinder barrel that stretches out, little cylinder barrel end face constitutes the capacitor of a sealing by the end cap shutoff, be provided with small piston in the capacitor, small piston is fixedlyed connected with piston rod, and big piston is enclosed within on the piston rod by flip sleeve, cylinder body is provided with the medium channel of big chamber and capacitor, the center on the piston rod be provided with on medium channel and the cylinder body the corresponding connection of medium channel; The yielding rubber circle is housed on the both ends of the surface of small piston.
A kind of three-position power cylinder comprises cylinder body, it is characterized in that: only be provided with a piston rod, be provided with a big chamber in cylinder body, piston rod passes cylinder body, stretches out or single-ended stretching out from the cylinder body two ends, lead in the pilot hole of piston rod in the cylinder body at big chamber two ends, be provided with seal arrangement between the two; In big chamber, be provided with a big piston, before the big piston, the yielding rubber circle is housed in the ear end face, big piston is provided with the little cylinder barrel that stretches out, little cylinder barrel end face constitutes the capacitor of a sealing by the end cap shutoff, be provided with small piston in the capacitor, small piston is fixedlyed connected with piston rod, big piston is slidingly fitted on the piston rod by flip sleeve, cylinder body is provided with the medium channel of big chamber and capacitor, the medium channel of big chamber is entered by the big piston two ends, the medium channel of capacitor enters the rear end of small piston by the center hole on the piston rod, and the front end of small piston is provided with Returnning spring; The yielding rubber circle is housed on the both ends of the surface of small piston.
Beneficial effect: the present invention adopts a piston rod, the active chamber of in big piston, establishing small piston, and big piston moves into place, and promotes small piston, drives piston rod and moves realization first position location, and small piston continues to promote piston rod and realizes second position location.The present invention constitutes three-position power cylinder by initial position, first position location, second position location, and in movement process, yielding rubber circle buffering does not have and impacts, accurate positioning, reliability height, long service life, the defective that can avoid existing three cylinders to exist.Only be provided with a piston rod, coaxality is good.The present invention both can be an oil hydraulic cylinder, can be cylinder also, was suitable for being used for accurately being positioned three positions and the high mechanism of motion frequency, as choosing, gearshift mechanism etc. automatically on the automobile gearbox.
Description of drawings
Fig. 1 is the structural drawing of existing three cylinders.
Fig. 2 is the plan view of one embodiment of this invention.
Fig. 3 is the plan view of one embodiment of this invention.
Fig. 4 is along the A-A sectional view among Fig. 2.
Fig. 5 is the structural representation of another embodiment of the present invention.
Fig. 6 is the another kind of return structural representation of small piston.
Embodiment
A kind of three-position power cylinder shown in Fig. 2,3,4 comprises cylinder body 10, only is provided with a piston rod 7, in cylinder body 10, be provided with a big chamber, piston rod 7 passes cylinder body, stretches out from the cylinder body two ends, leads in the pilot hole of piston rod 7 in the cylinder body at big chamber two ends; In big chamber, be provided with a big piston 11, big piston is equipped with the yielding rubber circle in 11 front and rear ends, big piston 11 is provided with the little cylinder barrel 12 that stretches out, little cylinder barrel end face constitutes the capacitor of a sealing by end cap 14 shutoff, be provided with small piston in the capacitor, small piston 13 is fixedlyed connected with piston rod 7, and big piston 11 is enclosed within on the piston rod by flip sleeve, cylinder body 10 is provided with the medium channel of big chamber and capacitor, piston rod be provided with on center hole 9 and the cylinder body the corresponding connection of medium channel; The yielding rubber circle is housed on the both ends of the surface of small piston 13.Cylinder body 10 is provided with four inlet passages 8.
As shown in Figure 5, be another kind of structural representation of the present invention, an end of piston rod 7 does not pass cylinder body, is provided with end cap 16 and blocks.All the other structures are identical with the structure shown in Fig. 2,3,4.
As shown in Figure 6, the medium channel of capacitor enters the rear end of small piston by the end center hole on the piston rod, and the front end of small piston is provided with Returnning spring 17 and realizes resetting.This resetting structure both can be replaced resetting structure shown in Figure 4, can replace resetting structure shown in Figure 5 again.
Above-mentioned three-position power cylinder both can be an oil hydraulic cylinder, also can be cylinder, as long as structure is identical, all belonged to protection scope of the present invention.
The advantage of three-position power cylinder: realize step-wise displacement by a piston rod 1, with one heart; Bump when not moving, long service life.
Claims (3)
1. three-position power cylinder, comprise cylinder body, it is characterized in that: only be provided with a piston rod, in cylinder body, be provided with a big chamber, piston rod passes cylinder body, stretch out or single-ended stretching out from the cylinder body two ends, lead in the pilot hole of piston rod in the cylinder body at big chamber two ends, be provided with seal arrangement between the two; In big chamber, be provided with a big piston, the yielding rubber circle is housed in the big piston front and rear end, big piston is provided with the little cylinder barrel that stretches out, little cylinder barrel end face constitutes the capacitor of a sealing by the end cap shutoff, be provided with small piston in the capacitor, small piston is fixedlyed connected with piston rod, big piston is slidingly fitted on the piston rod by flip sleeve, cylinder body is provided with the medium channel of big chamber and capacitor, the medium channel of big chamber is entered by the big piston two ends, and the medium channel of capacitor is entered the two ends of small piston by the center hole on the piston rod; The yielding rubber circle is housed on the both ends of the surface of small piston.
2. three-position power cylinder, comprise cylinder body, it is characterized in that: only be provided with a piston rod, in cylinder body, be provided with a big chamber, piston rod passes cylinder body, stretch out or single-ended stretching out from the cylinder body two ends, lead in the pilot hole of piston rod in the cylinder body at big chamber two ends, be provided with seal arrangement between the two; In big chamber, be provided with a big piston, before the big piston, the yielding rubber circle is housed in the ear end face, big piston is provided with the little cylinder barrel that stretches out, little cylinder barrel end face constitutes the capacitor of a sealing by the end cap shutoff, be provided with small piston in the capacitor, small piston is fixedlyed connected with piston rod, big piston is slidingly fitted on the piston rod by flip sleeve, cylinder body is provided with the medium channel of big chamber and capacitor, the medium channel of big chamber is entered by the big piston two ends, the medium channel of capacitor enters the rear end of small piston by the center hole on the piston rod, and the front end of small piston is provided with Returnning spring; The yielding rubber circle is housed on the both ends of the surface of small piston.
3. a kind of three-position power cylinder according to claim 1 and 2 is characterized in that: described a kind of three-position power cylinder is oil hydraulic cylinder or cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118513A CN101749298A (en) | 2010-01-22 | 2010-01-22 | Three-position power cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118513A CN101749298A (en) | 2010-01-22 | 2010-01-22 | Three-position power cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749298A true CN101749298A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010118513A Pending CN101749298A (en) | 2010-01-22 | 2010-01-22 | Three-position power cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749298A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317776A (en) * | 2014-05-28 | 2016-02-10 | 上海汽车集团股份有限公司 | Hydraulic cylinder and control device with same |
| CN109607191A (en) * | 2019-01-30 | 2019-04-12 | 苏州日川精密仪器有限公司 | Pneumatic suction cup slider cylinder |
-
2010
- 2010-01-22 CN CN201010118513A patent/CN101749298A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317776A (en) * | 2014-05-28 | 2016-02-10 | 上海汽车集团股份有限公司 | Hydraulic cylinder and control device with same |
| CN105317776B (en) * | 2014-05-28 | 2017-08-08 | 上海汽车集团股份有限公司 | A kind of hydraulic cylinder and the control device with the hydraulic cylinder |
| CN109607191A (en) * | 2019-01-30 | 2019-04-12 | 苏州日川精密仪器有限公司 | Pneumatic suction cup slider cylinder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100623 |