CN204025230U - Cylinder piston assembly - Google Patents
Cylinder piston assembly Download PDFInfo
- Publication number
- CN204025230U CN204025230U CN201420459976.0U CN201420459976U CN204025230U CN 204025230 U CN204025230 U CN 204025230U CN 201420459976 U CN201420459976 U CN 201420459976U CN 204025230 U CN204025230 U CN 204025230U
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- CN
- China
- Prior art keywords
- piston
- piston rod
- seal
- groove
- cylinder
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- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of cylinder piston assembly, comprise piston and piston rod, the two end part that piston rod is used for dividing with Piston connecting portion offer positioning groove, the two end part inwall that piston is used for the axis be connected with piston rod is convexly equipped with spacing interior convex edge, piston rod is after oxidation processes and piston passes through spacing interior convex edge and positioning groove is riveted, piston rod is provided with sealed groove between two positioning grooves, the radial length of sealed groove is less than the radial length of positioning groove, be embedded with piston rod seal component in sealed groove, piston sleeve is provided with piston seal.Piston is offered positioning groove and is riveted with the spacing interior convex edge of piston rod and coordinate, thus effectively ensure the concentricity of piston and piston rod, seal groove and piston rod seal component are set, strengthen the sealing between piston and piston rod, if the sealing between piston and cylinder body strengthened by seal ring, rivet with piston after piston rod oxidation processes, wear resistance and the corrosion resistance of piston rod can be strengthened like this.
Description
Technical field
The utility model relates to a kind of parts of cylinder, and more particularly, it relates to a kind of piston assembly of cylinder.
Background technique
Cylinder refers in internal-combustion engine or external-combustion engine, allows piston occupy in the inner, allows its container up and down reciprocatingly.Thrust on piston rod and pulling force is determined according to the size of the required power of work.Select the ouput force slightly surplus that should make cylinder during cylinder thus.If cylinder diameter selects little, ouput force is inadequate, cylinder cisco unity malfunction; But cylinder diameter is excessive, not only make equipment heaviness, cost high, air consumption increases simultaneously, causes energy waste.When jig Design, boosting mechanism should be adopted, to reduce the size of cylinder as far as possible.
Cylinder is made up of cylinder barrel, cylinder cap, piston assembly and Sealing etc.End cap is provided with intake and exhaust port, and what have is also provided with damping mechanism in end cap.Piston assembly comprises piston rod and piston, both connections are generally and are threaded, being threaded and concentricity between piston and piston rod can be caused low, is secondly both easy abrasion and corrosions in position of being threaded, is that after piston is connected with piston rod thread, sealability is between the two poor again.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of cylinder piston assembly, and this kind of piston assembly concentricity is high, good airproof performance, good damping effect and be not easy abrasion and corrosion.
For achieving the above object, the utility model provides following technological scheme:
A kind of cylinder piston assembly, comprise piston and piston rod, the two end part that described piston rod is used for dividing with Piston connecting portion offer positioning groove, the two end part inwall that described piston is used for the axis be connected with piston rod is convexly equipped with spacing interior convex edge, described piston rod is after oxidation processes and piston passes through spacing interior convex edge and positioning groove is riveted, described piston rod is provided with sealed groove between two positioning grooves, the radial length of described sealed groove is less than the radial length of positioning groove, piston rod seal component is embedded with in described sealed groove, described piston sleeve is provided with piston seal, the outer surface at described piston two end part offers the damping trough of annular, beam is embedded with in described damping trough, described beam inwall is convexly equipped with the positioning part arranged ringwise, described beam is embedded in damping trough by positioning part.
By adopting technique scheme, piston is offered positioning groove and is riveted with the spacing interior convex edge of piston rod and coordinate, thus effectively ensure the concentricity of piston and piston rod, piston shaft arrange to two ends spacing interior convex edge coordinate with positioning groove can effectively prevent piston rivet on the piston rod after axial float, seal groove and piston rod seal component are set between two positioning grooves, strengthen the sealing between piston and piston rod, on piston, the sealing between piston and cylinder body strengthened by sheathed seal ring, rivet with piston after piston rod oxidation processes, wear resistance and the corrosion resistance of piston rod can be strengthened like this, its intensity is ensured in piston and piston rod movement process, be not easy abrasion and corrosion
Offering damping trough at the two ends at outer surface of piston can the two ends balanced shock damping of piston, from the impact strength of cylinder body in effective minimizing working procedure, good damping effect, and reduce noise to a certain extent, improve the working life of piston assembly, beam arranges positioning part and is embedded in damping trough, the Du Genggao that is connected firmly of such beam and piston.
The utility model is set to further: described piston rod offers two sealed grooves, and described piston rod seal component is rubber ring.
By adopting technique scheme, two sealed grooves being set to piston rod and piston seal, ensureing also can not waste material under abundant sealing between the two.
The utility model is set to further: described piston seal comprises the contacting part and resilient portion that circumference overlaps, described contacting part inwall and resilient portion inwall are wholely set, both outer walls leave gap and make the V-shaped setting of the cross section of piston seal, and described contacting part contacts with outer surface of piston.
By adopting technique scheme, arrange contact part to be connected ensure between piston seal with piston firm with outer surface of piston and to be connected, resilient portion is overlapping with contacting part circumference, and the V-shaped setting of the cross section of piston seal, such piston seal forms an easy spring, can play cushioning effect while packed-piston and cylinder body.
The utility model is set to further: described piston sleeve is provided with magnet ring.
By adopting technique scheme, the sheathed magnet ring of piston, coordinate the induction switch that cylinder is arranged, the movement position of the reacting piston that can understand.
The utility model is set to further: described piston rod offers two sealed grooves, and described piston rod seal component is rubber ring.
By adopting technique scheme, two sealed grooves being set to piston rod and piston seal, ensureing also can not waste material under abundant sealing between the two.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model cylinder piston assembly embodiment;
Fig. 2 is the structural representation of piston.
Reference character: 1, piston rod; 11, positioning groove; 12, sealed groove; 13, piston rod seal component; 2, piston; 21, spacing interior convex edge; 22, piston seal; 221, contacting part; 222, resilient portion; 23, damping trough; 3, beam; 31, positioning part; 4, magnet ring.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model cylinder piston assembly embodiment is described further.
A kind of cylinder piston assembly, comprise piston 2 and piston rod 1, described piston rod 1 is for offering positioning groove 11 with the two end part of piston 2 attachment portion, described piston 2 is convexly equipped with spacing interior convex edge 21 for the two end part inwall of the axis be connected with piston rod 1, described piston rod 1 is riveted with positioning groove 11 by spacing interior convex edge 21 with piston 2 after oxidation processes, described piston rod 1 is provided with sealed groove 12 between two positioning grooves 11, the radial length of described sealed groove 12 is less than the radial length of positioning groove 11, piston rod seal component 13 is embedded with in described sealed groove 12, described piston 2 is arranged with piston seal 22.
By adopting technique scheme, piston 2 is offered positioning groove 11 and is riveted with the spacing interior convex edge 21 of piston rod 1 and coordinate, thus effectively ensure the concentricity of piston 2 and piston rod 1, the axial two ends of piston 2 arrange spacing interior convex edge 21 coordinate with positioning groove 11 can effectively prevent piston 2 to be riveted on piston rod 1 after axial float, seal groove and piston rod seal component 13 are set between two positioning grooves 11, strengthen the sealing between piston 2 and piston rod 1, on piston 2, the sealing between piston 2 and cylinder body strengthened by sheathed seal ring, rivet with piston 2 after piston rod 1 oxidation processes, wear resistance and the corrosion resistance of piston rod 1 can be strengthened like this, its intensity is ensured in piston 2 and piston rod 1 movement process, be not easy abrasion and corrosion.
The outer surface at described piston 2 two end part offers the damping trough 23 of annular, and be embedded with beam 3 in described damping trough 23, described beam 3 inwall is convexly equipped with the positioning part 31 arranged ringwise, and described beam 3 is embedded in damping trough 23 by positioning part 31.By adopting technique scheme, offering damping trough 23 at the two ends at piston 2 outer surface can the two ends balanced shock damping of piston 2, from the impact strength of cylinder body in effective minimizing working procedure, and reduce noise to a certain extent, improve the working life of piston assembly, beam 3 arranges positioning part 31 and is embedded in damping trough 23, such beam 3 (it should be noted that the material of beam 3 can be silicone gum rubber or fluorine rubber herein with the Du Genggao that is connected firmly of piston 2, silicone gum rubber uses general and cost is lower, the preferred beam 3 made of silicone gum rubber herein).
Described piston rod 1 offers two sealed grooves 12, and described piston rod seal component 13 is rubber ring.By adopting technique scheme, two sealed grooves, 12 pairs of piston rods 1 being set and piston 2 seals, ensureing also can not waste material under abundant sealing between the two.
Described piston seal 22 comprises the contacting part 221 and resilient portion 222 that circumference overlaps, described contacting part 221 inwall and resilient portion 222 inwall are wholely set, both outer walls leave gap and make the V-shaped setting of the cross section of piston seal 22, described contacting part 221 and piston 2 exterior surface.By adopting technique scheme, arrange contact part to be connected ensure between piston seal 22 with piston 2 firm with piston 2 outer surface and to be connected, resilient portion 222 is overlapping with contacting part 221 circumference, and the V-shaped setting of the cross section of piston seal 22, such piston seal 22 forms an easy spring, can play cushioning effect while packed-piston 2 with cylinder body.
Described piston 2 is arranged with magnet ring 4, the sheathed magnet ring 4 of piston 2, coordinates the induction switch that cylinder is arranged, the movement position of the reacting piston 2 that can understand.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a cylinder piston assembly, comprise piston and piston rod, it is characterized in that: the two end part that described piston rod is used for dividing with Piston connecting portion offer positioning groove, the two end part inwall that described piston is used for the axis be connected with piston rod is convexly equipped with spacing interior convex edge, described piston rod is after oxidation processes and piston passes through spacing interior convex edge and positioning groove is riveted, described piston rod is provided with sealed groove between two positioning grooves, the radial length of described sealed groove is less than the radial length of positioning groove, piston rod seal component is embedded with in described sealed groove, described piston sleeve is provided with piston seal, the outer surface at described piston two end part offers the damping trough of annular, beam is embedded with in described damping trough, described beam inwall is convexly equipped with the positioning part arranged ringwise, described beam is embedded in damping trough by positioning part.
2. cylinder piston assembly according to claim 1, is characterized in that: described piston rod offers two sealed grooves, and described piston rod seal component is rubber ring.
3. cylinder piston assembly according to claim 1, it is characterized in that: described piston seal comprises the contacting part and resilient portion that circumference overlaps, described contacting part inwall and resilient portion inwall are wholely set, both outer walls leave gap and make the V-shaped setting of the cross section of piston seal, and described contacting part contacts with outer surface of piston.
4. the cylinder piston assembly according to Claims 2 or 3, is characterized in that: described piston sleeve is provided with magnet ring.
5. cylinder piston assembly according to claim 4, is characterized in that: described piston rod offers two sealed grooves, and described piston rod seal component is rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459976.0U CN204025230U (en) | 2013-12-21 | 2014-08-13 | Cylinder piston assembly |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851640 | 2013-12-21 | ||
| CN201320851640.4 | 2013-12-21 | ||
| CN201420459976.0U CN204025230U (en) | 2013-12-21 | 2014-08-13 | Cylinder piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025230U true CN204025230U (en) | 2014-12-17 |
Family
ID=52065101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459976.0U Expired - Fee Related CN204025230U (en) | 2013-12-21 | 2014-08-13 | Cylinder piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204025230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826843A (en) * | 2019-03-25 | 2019-05-31 | 宁波纽帕得机械有限公司 | A kind of modularization cylinder piston and preparation method thereof |
-
2014
- 2014-08-13 CN CN201420459976.0U patent/CN204025230U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826843A (en) * | 2019-03-25 | 2019-05-31 | 宁波纽帕得机械有限公司 | A kind of modularization cylinder piston and preparation method thereof |
| CN109826843B (en) * | 2019-03-25 | 2024-05-03 | 宁波纽帕得机械有限公司 | Modularized cylinder piston and manufacturing method thereof |
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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 |
Granted publication date: 20141217 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |