CN204692561U - Without oily piston - Google Patents
Without oily piston Download PDFInfo
- Publication number
- CN204692561U CN204692561U CN201520387927.5U CN201520387927U CN204692561U CN 204692561 U CN204692561 U CN 204692561U CN 201520387927 U CN201520387927 U CN 201520387927U CN 204692561 U CN204692561 U CN 204692561U
- Authority
- CN
- China
- Prior art keywords
- top cover
- fixed base
- piston
- bump
- oily piston
- 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 discloses a kind of without oily piston, its drip irrigation device is, comprise piston only, top cover, described piston only is provided with the fixed base coordinated with top cover, described fixed base is equipped with the center of described top cover the screw hole matched, the one side that described top cover and described fixed base are fitted is provided with bump, and described fixed base is provided with the depressed part consistent with described lobe shape, and described bump is the domed shape of arc; Utilize the bump of domed shape on top cover to coordinate with the depressed part on fixed base, change the structure of original plane, can guarantee that both are by stable for leather cup clamping.
Description
Technical field
The utility model relates to a kind of piston, and more particularly, it relates to a kind of without oily piston.
Background technique
Apply now comparatively extensive on industrial production, structural design without oily piston type air compressor.Without oily piston and most piston structure substantially similar, the leather cup be made up of self lubricating material is only added without oily piston, because self lubricating material has an outstanding feature, namely on the metal surface that it runs, form the very little film of one deck friction factor, thus on piston and inboard wall of cylinder block between the air flue effect of lubricating.Tetrafluoroethylene, nylon products, metallo-plastic etc. that self lubricating material is common.
Owing to needing the leather cup of selflubricating to be clamped on piston only without oily piston, therefore, present Design of Piston Structure is substantially, utilization utilizes a top cover, be fixed on piston by the screw hole being positioned at top cap central, piston is provided with a fixed base matched with top cover, and leather cup is clamped between fixed base and top cover.Because most of top cover and fixed base are plane, adding screwing is the position being positioned at center, easily there will be intermediate recess go down when being fixed and clamped, the structure that outside tilts, the leather cup that this structure can cause periphery to be pushed down is not very stable, easily occurs the phenomenon come off.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is that providing a kind of utilizes the bump of domed shape on top cover to coordinate with the depressed part on fixed base without oily piston, change the structure of original plane, can guarantee that both are by stable for leather cup clamping.
For achieving the above object, the utility model provides following technological scheme: a kind of without oily piston, comprise piston only, top cover, described piston only is provided with the fixed base coordinated with top cover, described fixed base is equipped with the center of described top cover the screw hole matched, it is characterized in that: the one side that described top cover and described fixed base are fitted is provided with bump, and described fixed base is provided with the depressed part consistent with described lobe shape, described bump is the domed shape of arc.
The utility model is set to further: described bump is provided with multiple fixture block, and described depressed part is provided with the draw-in groove corresponding with described fixture block.
The utility model is set to further: described fixture block is rectangular shape.
The utility model is set to further: the one side that described top cover and described fixed base are fitted also establishes multiple anti-skidding bulge loop for clamping leather cup.
The utility model is set to further: described anti-skidding bulge loop quantity is two and distributes with one heart.
Compared with prior art, the utility model has the advantage of, utilize the bump of domed shape on top cover to coordinate with the depressed part on fixed base, change the structure of original plane.Because screw is fixing from There toward fixed base, after top cover adds the bump of dome, the forced position of screw is just thick, and the lower thickness of periphery, just slow down intermediate recess, peripheral situation about protruding occurs, prevent the leather cup being clamped in centre from occurring that situation about loosening occurs.With coordinating of draw-in groove, fixture block can guarantee that situation about rotating in use can not appear in top cover, and anti-skidding bulge loop can increase the frictional force of top cover to leather cup greatly, guarantees that leather cup there will not be phenomenons such as coming off.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model without oily piston embodiment;
Fig. 2 is that the utility model is without the structural drawing under oily piston embodiment separated position;
Fig. 3 is the structural drawing of the utility model without oily piston embodiment piston only;
Fig. 4 is the structural drawing of the utility model without oily piston embodiment top cover.
Reference character: 1, piston only; 11, fixed base; 12, depressed part; 13, draw-in groove; 2, top cover; 21, bump; 22, fixture block; 23, anti-skidding bulge loop.
Embodiment
Referring to figs. 1 through Fig. 4, the utility model is described further without oily piston embodiment.
A kind of without oily piston, comprise piston only 1, circular top cover 2, piston only 1 is provided with the fixed base 11 coordinated with top cover 2, and fixed base 11 is circular, and piston only 1 is provided with the through hole passed for bent axle above.Fixed base 11 is equipped with the center of top cover 2 screw hole matched, and clamps leather cup between top cover 2 and fixed base 11, is known technology and does not relate to the utility model structure, so do not represent in figure due to leather cup.
The one side that top cover 2 and fixed base 11 are fitted is provided with bump 21, fixed base 11 is provided with the depressed part 12 consistent with bump 21 shape, bump 21 is the domed shape of arc, bump 21 is positioned at the center of top cover 2, and the outward edge of the outward edge of bump 21 and top cover 2 also has certain distance, the one side that top cover 2 and fixed base 11 are fitted, comprises all zinc-plated setting of outside one side of bump 21.
Utilize the bump 21 of domed shape on top cover 2 to coordinate with the depressed part 12 on fixed base 11, change the structure of original plane.Because screw is fixed toward fixed base 11 above top cover 2, after top cover 2 adds the bump 21 of dome, the forced position of screw is just thick, and the lower thickness of periphery, just slow down intermediate recess, peripheral situation about protruding occurs, prevent the leather cup being clamped in centre from occurring that situation about loosening occurs.
Bump 21 is provided with two fixture blocks 22, and depressed part 12 is provided with the draw-in groove 13 corresponding with fixture block 22.Two symmetrical distributions of fixture block 22, both lines are by screw hole, and fixture block 22 is rectangular shape.
With coordinating of draw-in groove 13, fixture block 22 can guarantee that situation about rotating in use can not appear in top cover 2, most of fixture block 22 is all columniform, but the fixture block of rectangular shape 22 is stressed more stable, not easily there is rotary shifted situation, about two distributions, convenient installation, just can align very soon.
The one side that top cover 2 and fixed base 11 are fitted also establishes multiple anti-skidding bulge loop 23 for clamping leather cup.Anti-skidding bulge loop 23 quantity is two and distributes with one heart.Anti-skidding bulge loop 23 can increase the frictional force of top cover 2 pairs of leather cups greatly, guarantees that leather cup there will not be phenomenons such as coming off.
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. one kind without oily piston, comprise piston only, top cover, described piston only is provided with the fixed base coordinated with top cover, described fixed base is equipped with the center of described top cover the screw hole matched, it is characterized in that: the one side that described top cover and described fixed base are fitted is provided with bump, described fixed base is provided with the depressed part consistent with described lobe shape, and described bump is the domed shape of arc.
2. according to claim 1 without oily piston, it is characterized in that: described bump is provided with multiple fixture block, described depressed part is provided with the draw-in groove corresponding with described fixture block.
3. according to claim 2 without oily piston, it is characterized in that: described fixture block is rectangular shape.
4. according to claim 1 without oily piston, it is characterized in that: the one side that described top cover and described fixed base are fitted also establishes multiple anti-skidding bulge loop for clamping leather cup.
5. according to claim 4 without oily piston, it is characterized in that: described anti-skidding bulge loop quantity is two and distributes with one heart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387927.5U CN204692561U (en) | 2015-06-06 | 2015-06-06 | Without oily piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387927.5U CN204692561U (en) | 2015-06-06 | 2015-06-06 | Without oily piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692561U true CN204692561U (en) | 2015-10-07 |
Family
ID=54232859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387927.5U Expired - Fee Related CN204692561U (en) | 2015-06-06 | 2015-06-06 | Without oily piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692561U (en) |
-
2015
- 2015-06-06 CN CN201520387927.5U patent/CN204692561U/en not_active Expired - Fee Related
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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: 20151007 Termination date: 20160606 |