CN203547948U - New-type piston for chain saw - Google Patents
New-type piston for chain saw Download PDFInfo
- Publication number
- CN203547948U CN203547948U CN201320546613.6U CN201320546613U CN203547948U CN 203547948 U CN203547948 U CN 203547948U CN 201320546613 U CN201320546613 U CN 201320546613U CN 203547948 U CN203547948 U CN 203547948U
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- CN
- China
- Prior art keywords
- piston
- chain saw
- new
- key seat
- skirt
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a new-type piston for a chain saw. The new-type piston comprises a piston body, a ring slot, a piston skirt and pin boss holes. The piston body is a hollow cylinder, a ring slot is formed at the top end of the piston body, a piston skirt is arranged at the bottom end of the piston body and two pin boss holes in a line are formed in the upper side of the piston skirt. Grooves are formed in the pin boss holes and a plurality of strengthening bars are arranged on the pin boss holes inside the piston body. A deepening groove is formed inside the piston body and strengthening bars are arranged on the ring slot. The new-type piston has the advantages of being new in structure, good in sealing, stable in performance, secure in connection with other parts, and smooth in motion.
Description
Technical field
The utility model relates to the technical field of piston, particularly a kind of for chain saw novel piston.
Background technique
The function of piston is to bear gas pressure, and by wrist pin, passes to connecting rod and order about crankshaft rotating, piston head or the constituent element of firing chamber.Piston at high temperature, high pressure, at a high speed, work under the condition of insufficient lubrication.Piston is worked under this severe condition, can produce distortion accelerated wear test, also can produce additional load and thermal stress, is subject to the chemical corrosion effect of combustion gas simultaneously.If the Rig up error of piston ring or poor sealing, will cause altering to firing chamber and burning on the machine oil on casing wall, cause burn oil phenomenon together with mixed gas.If the matching gap of piston ring and casing wall is too small or piston ring because of the carbon distribution situation such as be stuck in annular groove, when piston moves up and down, possibly by cylinder wall scratch, can on cylinder wall, form very dark rill, " scuffing of cylinder bore " phenomenon of namely often saying after long-time.Cylinder wall has had rill, and sealing is bad, can cause equally the situation of burn oil.
Model utility content
For addressing the above problem, the purpose of this utility model be to provide a kind of novel structure, sealing by force, not breaking-up easy to wear for chain saw novel piston.
For achieving the above object, the technical solution of the utility model:
A kind of for chain saw novel piston, comprise piston only, annular groove, piston skirt, key seat hole, described piston only is the cylindrical of inner hollow out, piston only upper end has the annular groove of a depression, piston only lower end is provided with piston skirt, and the top of piston skirt has two key seat holes on same straight line.
As preferably, on described key seat hole, have a groove.
As preferably, in described piston only, place, key seat hole is provided with some reinforcing strip.
As preferably, described piston only inside is provided with and adds deep trouth, adds deep trouth lower than piston only inwall.
As preferably, described annular groove is provided with positioning strip.
Beneficial conditions of the present utility model is: novel structure, and good seal performance, stable performance, is connected firmly effectively with other parts, moves smooth and easy.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the right elevation of Fig. 1.
Fig. 4 is the worm's eye view of Fig. 1.
Embodiment
As shown in Figure 1,2,3, 4, a kind of for chain saw novel piston, comprise piston only 1, annular groove 2, piston skirt 3, key seat hole 4, what described piston only 1 was inner hollow out is cylindrical, piston only 1 upper end has the annular groove 2 of a depression, piston only 1 lower end is provided with piston skirt 3, and the top of piston skirt 3 has two key seat holes 4 on same straight line.On described key seat hole 4, have a groove 5.Described 4 places, the interior key seat of piston only 1 hole are provided with some reinforcing strip 6.Described piston only 1 inside is provided with and adds deep trouth 7, adds deep trouth 7 lower than piston only 1 inwall.Described annular groove 2 is provided with positioning strip 8.Annular groove 2 and annular groove 2 that piston only of the present utility model 1 upper end has a depression are provided with positioning strip, for placing and positioning piston ring, avoid mobile, prevent fluid leakage, sealability is strong, piston only 1 lower end is provided with piston skirt 3, its effect is to keep piston only 1 vertical attitude in to-and-fro motion as far as possible, for piston only 1 plays targeting part, the top of piston skirt 3 has two key seat holes 4 on same straight line, by being inserted in, loose pin in key seat hole 4, is connected support with connecting rod, carry out moving up and down of piston only 1, on key seat hole 4, have a groove 5, installation loose pin is more convenient, 4 places, the interior key seat of piston only 1 hole are provided with some reinforcing strip 6, key seat hole 4 can not damaged because of long-term motion, piston only 1 inside is provided with and adds deep trouth 7, add deep trouth 7 lower than piston only 1 inwall, during the link motion of the loose pin in being placed on key seat hole 4, not can with piston only 1 internal impact friction, avoid damaging.
Claims (5)
1. one kind for chain saw novel piston, comprise piston only (1), annular groove (2), piston skirt (3), key seat hole (4), it is characterized in that, what described piston only (1) was inner hollow out is cylindrical, piston only (1) upper end has the annular groove (2) of a depression, piston only (1) lower end is provided with piston skirt (3), and the top of piston skirt (3) has two key seat holes (4) on same straight line.
2. according to claim 1 a kind ofly it is characterized in that for chain saw novel piston, on described key seat hole (4), have a groove (5).
3. according to claim 1 a kind ofly it is characterized in that for chain saw novel piston, some reinforcing strip (6) are located to be provided with in the interior key seat of described piston only (1) hole (4).
4. according to claim 1 and 2 a kind ofly it is characterized in that for chain saw novel piston, described piston only (1) inside is provided with and adds deep trouth (7), adds deep trouth (7) lower than piston only (1) inwall.
5. according to claim 1 a kind ofly it is characterized in that for chain saw novel piston, described annular groove (2) is provided with positioning strip (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546613.6U CN203547948U (en) | 2013-09-04 | 2013-09-04 | New-type piston for chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546613.6U CN203547948U (en) | 2013-09-04 | 2013-09-04 | New-type piston for chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547948U true CN203547948U (en) | 2014-04-16 |
Family
ID=50466076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546613.6U Expired - Fee Related CN203547948U (en) | 2013-09-04 | 2013-09-04 | New-type piston for chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547948U (en) |
-
2013
- 2013-09-04 CN CN201320546613.6U patent/CN203547948U/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: 20140416 Termination date: 20150904 |
|
| EXPY | Termination of patent right or utility model |