CN2697319Y - Piston assembly for active core type lubricant pressure indicator - Google Patents
Piston assembly for active core type lubricant pressure indicator Download PDFInfo
- Publication number
- CN2697319Y CN2697319Y CN 200420047963 CN200420047963U CN2697319Y CN 2697319 Y CN2697319 Y CN 2697319Y CN 200420047963 CN200420047963 CN 200420047963 CN 200420047963 U CN200420047963 U CN 200420047963U CN 2697319 Y CN2697319 Y CN 2697319Y
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- CN
- China
- Prior art keywords
- piston
- sleeve
- pressure indicator
- piston rod
- cover
- Prior art date
- 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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Abstract
The utility model provides a piston assembly for the active core type lubricant pressure indicator, comprising a piston and a piston rod; wherein, the lower end of the piston rod is provided with a clamp cap; the piston is composed of a piston internal sleeve and a piston external sleeve; the piston internal sleeve is a center hole sleeve whose upper end and lower end are respectively provided with an upper and a lower concave slots on the center shaft; the upper concave slot is provided with a spring, and the lower-concave slot is movably matched with the clamp cap; the lower end of the piston rod penetrates into the piston internal sleeve and the centre hole of the spring; the piston internal sleeve is closely matched with the barrel-shaped piston external sleeve which is sheathed outside the piston internal sleeve; intervals are reserved among the clamp cap, the lower concave slot, the center hole sleeve and the piston rod; the piston external sleeve is movably matched with a hydraulic cylinder which is arranged outside the piston external sleeve. The utility model has the advantages of simple and reasonable structure, easy and simple process and low cost, which ensures the concentricity of the piston and the hydraulic cylinder and prolongs the service life by more than one time.
Description
Technical field
The utility model relates to a kind of engine oil pressure indicator piston, i.e. dnockout core formula engine oil pressure indicator piston assembly.
Background technique
At present, engine oil pressure indicator piston assembly, the unreasonable structure of design, its process for machining and manufacturing complexity, cost height.And the concentricity between its piston and the fluid power cylinder is difficult for ensureing.Thereby, cause the tight side pine of a side between piston and the fluid power cylinder, it not only strengthens resistance to motion, causes the data of engine oil pressure measurement wrong, and adds huge piston and the wearing and tearing of fluid power cylinder, and working life is low.
Summary of the invention
Its purpose of the utility model is: a kind of dnockout core formula engine oil pressure indicator piston assembly is provided, and it is simple and reasonable for structure, and manufacturing process is simple, cheap, ensure the concentricity between piston and the fluid power cylinder, make between piston and the fluid power cylinder stressed even, raising working life.
The utility model is achieved in that a kind of dnockout core formula engine oil pressure indicator piston assembly, comprising: piston and piston rod, and its piston-rod lower end is provided with the card cap; Its piston is made of cover and piston jacket in the piston, and cover is the center borehole jack in the piston, and its upper and lower end is respectively equipped with the upper and lower groove of axle concentricity with it, and spring is set in its upper groove, low groove with block cap movingly; Piston rod is penetrated in the piston in cover, the spring center hole by the lower end; Be provided with the gap between its outer trunk piston overcoat drive fit of cover and cover in the piston, card cap and low groove, center borehole jack and piston rod, piston jacket be located at outside it fluid power cylinder movingly.Described fluid power cylinder lower end is communicated with oil inlet pipe.The piston rod upper end connects indicating device.Described card cap is and oblate of the concentricity axle of piston rod, oblate post, hemisphere.
The utility model is not only simple and reasonable for structure, manufacturing process is simple, cheap, piston rod and card cap in piston, overlap and the groove of piston jacket in have the certain interval amount, thereby, ensure that piston is regulated voluntarily and the fluid power cylinder between concentricity, make between piston and the fluid power cylinder stressed evenly, raising working life is more than one times.Simultaneously, ensure that also the data of engine oil pressure measurement are accurate.
Elaborate with accompanying drawing in conjunction with the embodiments:
Description of drawings
Fig. 1: the utility model structural representation.
1, cover in piston rod 101, card cap 2, spring 3, the piston
4, piston jacket 5, fluid power cylinder 6, oil inlet pipe 7, indicating device
Embodiment
Its structure is as shown in Figure 1: a kind of dnockout core formula engine oil pressure indicator piston assembly comprises: fluid power cylinder 5, and movingly piston assembly with it, and its piston assembly comprises: piston and piston rod 1, its piston-rod lower end is provided with card cap 101; Its piston is made of cover 3 and piston jacket 4 in the piston, and cover is the center borehole jack in the piston, and its upper and lower end is respectively equipped with the upper and lower groove of axle concentricity with it, and spring 2 is set in its upper groove, and low groove and card cap are movingly; Piston rod 1 is penetrated by cover lower end in the piston and overlaps in the piston in center hole and the spring 2, is provided with the gap between its card cap and low groove, center borehole jack and the piston rod; Cover 3 and piston jacket 4 drive fits of overlapping its outer cylindrical in the piston, piston jacket and fluid power cylinder are movingly.Described fluid power cylinder 5 lower ends are communicated with oil inlet pipe 6.Piston rod 1 upper end connects indicating device 7.Described card cap 101 is and oblate of the concentricity axle of piston rod 1, oblate post, hemisphere.
Cover adopts the good high-quality steel of wear resistance in described piston rod 1, piston jacket and fluid power cylinder, the piston, and spring 2 adopts the high-quality spring steel.
Experimental results show that: the utility model is simple and reasonable for structure, and manufacturing process is simple, and cost has reduced 30-50%.In the working procedure, piston rod and card cap in piston, overlap and the groove of piston jacket in have the certain interval amount, thereby, ensured the concentricity between piston and the fluid power cylinder, make between piston and the fluid power cylinder stressed evenly, raising working life is more than one times.Simultaneously, ensure that also the data of engine oil pressure measurement are accurate.
Claims (4)
1, a kind of dnockout core formula engine oil pressure indicator piston assembly, comprising: piston and piston rod (1) is characterized in that: its piston-rod lower end is provided with card cap (101); Its piston is by cover (3) and piston jacket (4) formation in the piston, and cover is the center borehole jack in the piston, and its upper and lower end is respectively equipped with the upper and lower groove of axle concentricity with it, and spring (2) is set in its upper groove, and low groove and card cap are movingly; Piston rod (1) is penetrated in the piston in cover, the spring center hole by the lower end; Be provided with the gap between its outer trunk piston overcoat (4) drive fit of cover (3) and cover in the piston, card cap and low groove, center borehole jack and piston rod, piston jacket be located at outside it fluid power cylinder movingly.
2, dnockout core formula engine oil pressure indicator piston assembly as claimed in claim 1 is characterized in that: described fluid power cylinder (5) lower end is communicated with oil inlet pipe (6).
3, dnockout core formula engine oil pressure indicator piston assembly as claimed in claim 1 is characterized in that: described piston rod (1) upper end connects indicating device (7).
4, dnockout core formula engine oil pressure indicator piston assembly as claimed in claim 1 is characterized in that: described card cap (101) for oblate of the concentricity axle of piston rod (1), oblate post, hemisphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047963 CN2697319Y (en) | 2004-04-09 | 2004-04-09 | Piston assembly for active core type lubricant pressure indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047963 CN2697319Y (en) | 2004-04-09 | 2004-04-09 | Piston assembly for active core type lubricant pressure indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697319Y true CN2697319Y (en) | 2005-05-04 |
Family
ID=34776213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420047963 Expired - Fee Related CN2697319Y (en) | 2004-04-09 | 2004-04-09 | Piston assembly for active core type lubricant pressure indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697319Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808451A (en) * | 2012-11-12 | 2014-05-21 | 森萨塔科技公司 | Pressure-measuring plug for a combustion engine |
-
2004
- 2004-04-09 CN CN 200420047963 patent/CN2697319Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808451A (en) * | 2012-11-12 | 2014-05-21 | 森萨塔科技公司 | Pressure-measuring plug for a combustion engine |
| CN103808451B (en) * | 2012-11-12 | 2017-09-22 | 森萨塔科技公司 | Pressure-measuring plug for combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20100409 |