CN212202275U - Assembled piston convenient for oil ring disassembly and assembly - Google Patents
Assembled piston convenient for oil ring disassembly and assembly Download PDFInfo
- Publication number
- CN212202275U CN212202275U CN202020953840.0U CN202020953840U CN212202275U CN 212202275 U CN212202275 U CN 212202275U CN 202020953840 U CN202020953840 U CN 202020953840U CN 212202275 U CN212202275 U CN 212202275U
- Authority
- CN
- China
- Prior art keywords
- piston
- pin
- base body
- oil ring
- retainer ring
- 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 piston of assembling convenient to oil ring dismouting, it includes: the piston comprises a piston base body, a retainer ring and a positioning pin, wherein an oil ring installation groove and a retainer ring embedded groove extending to the bottom of the piston base body from the lower part of the oil ring installation groove are concavely arranged on the excircle of the piston base body, the retainer ring is arranged in the retainer ring embedded groove to be filled, pin bosses extending to the bottom of the piston base body are symmetrically arranged at the bottom of the retainer ring, an arc-shaped plate extending upwards to the inner side of the piston base body is arranged on the pin bosses, an arc-shaped groove corresponding to the bottom of the piston base body is formed between the arc-shaped plate and the retainer ring, a plurality of first pin holes pointing to the arc-shaped plate are arranged on the excircle of the retainer ring, and the positioning pin is. The piston of assembling of oil ring dismouting of being convenient for, maintenance cost is low, is favorable to the installation and the dismantlement of combination oil ring, the damage of piston base member has been avoided to the dismouting in-process, stable in structure.
Description
Technical Field
The utility model relates to a piston technical field especially relates to a piston assembles convenient to oil ring dismouting.
Background
The piston is used for bearing gas pressure in an automobile engine, a connecting rod is driven by a piston pin to drive a crankshaft to rotate, and the top of the piston is also a component of a combustion chamber and occupies an extremely important position when the engine runs.
The work of piston can not leave the oil ring, and in order to promote the stability of oil ring on the piston, the hole of oil ring is less usually, and the piston is overall structure usually moreover, results in the oil ring to install the operation on the piston more hard, and especially the installation of combination oil ring is big with the dismantlement operation degree of difficulty, and the dismouting in-process causes the damage on piston surface easily, is unfavorable for the maintenance of piston ring to be changed, needs to improve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a piston of assembling convenient to oil ring dismouting promotes the dismouting convenience of oil ring, reduces the maintenance cost.
To achieve the purpose, the utility model adopts the following technical proposal:
an assemble piston convenient to oil ring dismouting includes: the piston comprises a piston base body, a retainer ring and a positioning pin, wherein an oil ring installation groove and a retainer ring embedded groove extending to the bottom of the piston base body from the lower part of the oil ring installation groove are concavely arranged on the excircle of the piston base body, the retainer ring is arranged in the retainer ring embedded groove to be filled, pin bosses extending to the bottom of the piston base body are symmetrically arranged at the bottom of the retainer ring, an arc-shaped plate extending upwards to the inner side of the piston base body is arranged on the pin bosses, an arc-shaped groove corresponding to the bottom of the piston base body is formed between the arc-shaped plate and the retainer ring, a plurality of first pin holes pointing to the arc-shaped plate are arranged on the excircle of the retainer ring, and the positioning pin is.
The piston base body is provided with a through hole corresponding to the positioning pin, and the back of the arc-shaped plate is provided with a second pin hole corresponding to the positioning pin.
Wherein, the retainer ring, the pin boss and the arc-shaped plate are of an integrated cast aluminum structure.
The pin seat is transversely provided with a pin shaft mounting hole, and a clamp spring mounting groove is formed in the pin shaft mounting hole.
And the outer circle of the piston base body is concavely provided with an air ring installation groove positioned above the oil ring installation groove.
The outer end of the first pin hole is provided with a threaded hole, and a fastening screw is arranged in the threaded hole.
The utility model has the advantages that: the utility model provides an assemble piston convenient to oil ring dismouting, the structure of assembling has been adopted, piston base member or retaining ring damage back, can maintain alone or change, and is with low costs, the open oil ring installation slot in bottom has been adopted, be favorable to the installation and the dismantlement of combination oil ring, the damage of piston base member is avoided to the dismouting in-process, and carry out the bottom shutoff of oil ring installation slot and the spacing after the installation of combination oil ring through the retaining ring, it carries out the spacing of retaining ring to recycle the locating pin, and the structural stability is promoted.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of a piston base according to the present invention;
fig. 3 is a top view of the retainer ring of fig. 1.
Detailed Description
The technical solution of the present invention is further explained by the specific embodiment with reference to fig. 1 to 3.
As shown in fig. 1 and 2, the assembled piston for facilitating the assembly and disassembly of the oil ring comprises: the piston comprises a piston base body 1, a retainer ring 4 and a positioning pin 6, wherein an oil ring mounting groove 3 and a retainer ring embedded groove 12 extending from the lower part of the oil ring mounting groove 3 to the bottom of the piston base body 1 are concavely arranged on the excircle of the piston base body 1, the bottom-opened oil ring mounting groove 3 is beneficial to mounting and dismounting of a combined oil ring, and the piston base body 1 is prevented from being damaged in the dismounting process. An air ring mounting groove 2 positioned above the oil ring mounting groove 3 is concavely arranged on the excircle of the piston base body 1, so that the air ring is mounted, and the air tightness of the combustion chamber is improved.
The retainer ring 4 is arranged in the retainer ring embedded groove 12 for filling, and the combined oil ring is limited after being installed. The bottom of the retainer ring 4 is symmetrically provided with pin bosses 9 extending to the bottom of the piston base body 1, pin shaft mounting holes 8 are transversely formed in the pin bosses 9, so that the piston pin shaft can be mounted, clamp spring mounting grooves 14 are formed in the pin shaft mounting holes 8, clamp springs can be mounted, and the two ends of the piston pin shaft are limited.
The pin boss 9 is provided with an arc-shaped plate 10 which extends upwards to the inner side of the piston base body 1, as shown in fig. 3, an arc-shaped groove 13 corresponding to the bottom of the piston base body 1 is formed between the arc-shaped plate 10 and the retainer ring 4, and the assembling precision is high. In this embodiment, the retainer ring 4, the pin boss 9 and the arc-shaped plate 10 are of an integrated cast aluminum structure, and the piston base body 1 is also of a cast aluminum structure, so that the piston has a light dead weight and a firm structure.
In order to improve structural stability, be provided with 2~3 first pinhole 15 of directional arc 10 on retaining ring 4 excircle, locating pin 6 sets up in first pinhole 15 and runs through piston base 1 and extend to in the arc 10, realizes retaining ring 4's spacing.
In this embodiment, a through hole 11 corresponding to the positioning pin 6 is formed in the piston base 1, and a second pin hole corresponding to the positioning pin 6 is formed in the back surface of the arc-shaped plate 10, so that the positioning pin 6 can be conveniently installed. First pinhole 15 outer end is provided with screw hole 7, be provided with fastening screw 5 in the screw hole 7, avoid the pine of locating pin 6 to take off, fastening screw 5 does not receive radial force moreover, stable in structure.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (6)
1. The utility model provides a assemble piston convenient to oil ring dismouting which characterized in that includes: the piston comprises a piston base body, a retainer ring and a positioning pin, wherein an oil ring installation groove and a retainer ring embedded groove extending to the bottom of the piston base body from the lower part of the oil ring installation groove are concavely arranged on the excircle of the piston base body, the retainer ring is arranged in the retainer ring embedded groove to be filled, pin bosses extending to the bottom of the piston base body are symmetrically arranged at the bottom of the retainer ring, an arc-shaped plate extending upwards to the inner side of the piston base body is arranged on the pin bosses, an arc-shaped groove corresponding to the bottom of the piston base body is formed between the arc-shaped plate and the retainer ring, a plurality of first pin holes pointing to the arc-shaped plate are arranged on the excircle of the retainer ring, and the positioning pin is.
2. The assembled piston facilitating assembly and disassembly of an oil ring as defined in claim 1, wherein the piston base is provided with a through hole corresponding to the positioning pin, and the back of the arc-shaped plate is provided with a second pin hole corresponding to the positioning pin.
3. The assembled piston facilitating disassembly and assembly of an oil ring as defined in claim 1, wherein the retainer ring, the pin boss and the arcuate plate are of an integrated cast aluminum structure.
4. The assembled piston convenient for disassembling and assembling an oil ring as claimed in claim 1, wherein a pin shaft mounting hole is transversely formed in the pin seat, and a snap spring mounting groove is formed in the pin shaft mounting hole.
5. The assembled piston facilitating oil ring assembly and disassembly of claim 1, wherein an air ring mounting groove located above the oil ring mounting groove is concavely arranged on the outer circle of the piston base body.
6. The assembled piston facilitating oil ring assembly and disassembly of claim 1, wherein the outer end of the first pin hole is provided with a threaded hole, and a fastening screw is arranged in the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020953840.0U CN212202275U (en) | 2020-05-30 | 2020-05-30 | Assembled piston convenient for oil ring disassembly and assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020953840.0U CN212202275U (en) | 2020-05-30 | 2020-05-30 | Assembled piston convenient for oil ring disassembly and assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212202275U true CN212202275U (en) | 2020-12-22 |
Family
ID=73812392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020953840.0U Expired - Fee Related CN212202275U (en) | 2020-05-30 | 2020-05-30 | Assembled piston convenient for oil ring disassembly and assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212202275U (en) |
-
2020
- 2020-05-30 CN CN202020953840.0U patent/CN212202275U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201222 Termination date: 20210530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |