CN212225973U - Novel piston pin structure - Google Patents
Novel piston pin structure Download PDFInfo
- Publication number
- CN212225973U CN212225973U CN202020975823.7U CN202020975823U CN212225973U CN 212225973 U CN212225973 U CN 212225973U CN 202020975823 U CN202020975823 U CN 202020975823U CN 212225973 U CN212225973 U CN 212225973U
- Authority
- CN
- China
- Prior art keywords
- piston pin
- positioning
- obturator
- base member
- pin base
- 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
Links
- 238000012856 packing Methods 0.000 claims 5
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a novel piston pin structure, including piston pin base member and obturator, the obturator is in piston pin base member intracavity and interference fit between the two, set up the elastic locating element on the perisporium of position department around the obturator, the elastic locating element includes first reference column, piston pin base member chamber wall is corresponding to be provided with the locating hole, and extend circumference on the piston pin base member perisporium and open the spread groove, the locating hole is located the spread groove tank bottom, the obturator perisporium is equipped with protruding stupefied, slot on the corresponding piston pin base member chamber wall, this piston pin adopts composite construction, imbed the obturator in piston pin base member intracavity, interference fit, and shaping protruding stupefied on the obturator, protruding stupefied and slot cooperation direction, spacing with the elastic locating element, when reaching the locating hole, first reference column pushes up the locating hole and limits the obturator displacement, more convenient to use, improve the precision, and open the spread groove at piston pin peris, and the positioning holes are connected by the oil grooves, so that heat dissipation is facilitated.
Description
Technical Field
The utility model relates to a piston pin technical field especially relates to a novel piston pin structure.
Background
At present, for the intensity that improves the piston pin, common practice is whole replacement material, and the shortcoming lies in with high costs, to the way of this part enterprise adoption intussuseption, intensity promotion, cost reduction, but its thermal diffusivity is not good, and easily takes place the phenomenon of dislocation in the filling process, needs external positioning, needs the improvement.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a novel piston pin structure to solve the above problems.
The technical scheme of the utility model is that:
the utility model provides a novel piston pin structure, includes piston pin base member and obturator, and the obturator is in piston pin base member intracavity and interference fit between the two, establishes elastic locating element around the obturator on the position department perisporium, and elastic locating element includes first reference column, and piston pin base member chamber wall is corresponding to be provided with the locating hole, and extends circumference on the piston pin base member perisporium and open the spread groove, and the locating hole is located the spread groove tank bottom, and the obturator perisporium is established protruding stupefied, fluting on the corresponding piston pin base member chamber wall.
This piston pin adopts composite construction, puts into the obturator at piston pin base member intracavity, interference fit to the shaping is protruding stupefied on the obturator, protruding stupefied and groove cooperation direction, it is spacing with elastic positioning element, when reacing the locating hole, locating hole restriction obturator displacement is gone into in first reference column top, and the use of being more convenient for improves the precision, and opens the spread groove at piston pin perisporium and form the oil groove, and couples together the locating hole with the oil groove, the heat dissipation of being convenient for.
Furthermore, the elastic positioning piece comprises a positioning cylinder, a stepped first positioning column and springs, a mounting groove is formed in the filling body, the positioning cylinder is sleeved on the first positioning column and is fixedly embedded in the mounting groove, 1 spring is mounted between the first positioning column and the bottom wall of the groove, and the outer diameter of each spring is 3/5-1 of the diameter of the positioning column.
According to the technical scheme, the first positioning column is limited by the positioning barrel, the spring provides elasticity, the positioning column is ejected out, and two ends of the spring are fixedly connected with the bottom surface and the groove wall of the positioning column.
The positioning structure further comprises a second positioning column, the second positioning column is arranged in the positioning hole and is fixedly embedded with the first positioning column, and holes are formed in the second positioning column and the first positioning column along the central line.
With second reference column and first reference column gomphosis stationary phase cooperation location obturator, and preferably during second reference column embedding locating hole, fill the space and improve structural stability, trompil in order to dispel the heat, good heat dissipation in two reference columns simultaneously.
Further, open the axial groove between the position mounting groove around the obturator, the cell wall trompil in axial groove both ends communicates with the mounting groove, the circulation of the lubricated liquid of being convenient for, good heat dissipation.
Furthermore, the distance between the mounting groove and the adjacent end of the filling body is 1/5-1/3 of the length of the filling body, and the depth of the mounting groove is 1/6-1/5 of the wall thickness of the filling body, so that the structural strength of the filling body is prevented from being greatly reduced, and the structural stability is maintained.
Drawings
FIG. 1: the structure of the utility model in the embodiment 1;
FIG. 2: the convex edge and the groove are matched with the structure diagram;
in the figure: 1. a piston pin base; 2. a filler; 3. mounting grooves; 4. a first positioning post; 5. a positioning cylinder; 6. a spring; 7. a second positioning column; 8. connecting grooves; 9. an axial slot; 10. and (4) convex edges.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.
Example 1
The novel piston pin structure disclosed in the embodiment comprises a piston pin base body 1 and a filling body 2, wherein the filling body is in interference fit with the piston pin base body in a cavity, the peripheral wall of the filling body is 4 cross-shaped integrally formed protruding ridges, grooves are formed in the corresponding piston pin base body cavity, the protruding ridges 10 are the same as the grooves in shape, and the depth of the grooves is 1/10 of the wall thickness of the piston pin base body.
Referring to fig. 1, the distance between the mounting groove 3 and the adjacent end of the filler is 1/4 of the length of the filler, the depth of the mounting groove is 1/6 of the thickness of the filler, an elastic positioning part is arranged in the mounting groove, and comprises a first positioning column 4, a positioning cylinder 5 and a spring 6, wherein the first positioning column is of a step type and is arranged in the mounting groove, the positioning sleeve is sleeved on the first positioning column and is embedded and fixed in the mounting groove, as shown in fig. 1, when the filler is installed in the cavity of the piston pin base body, the convex edge matching groove guides, the wall of the cavity of the piston pin base body is provided with a positioning hole, and when the positioning hole is located, the first positioning column rises to the positioning hole under.
In this embodiment, after the first positioning post extends into the positioning hole, the second positioning post 7 is inserted into the positioning hole outside the piston pin base and is fixed to the first positioning post in an embedded manner, specifically, the top of the first positioning post is slotted, the bottom of the second positioning post protrudes, the protruding portion is embedded into the slot, the first positioning post and the second positioning post are both provided with holes along the central line, the second positioning post fills the gap between the positioning holes, the structural stability is improved, and the holes formed along the central line facilitate heat dissipation.
In this embodiment, extend circumference on the piston pin base member perisporium and open spread groove 8, because of 4 sets of elastic locating element total installations, two liang of corresponding installations, the locating hole is located the spread groove tank bottom, and piston pin perisporium changes range little, and structural stability is good.
And open axial groove 9 between the filler front and back position mounting groove, the cell wall trompil in axial groove both ends communicates with the mounting groove, the circulation of the lubricated liquid of being convenient for, good heat dissipation.
Preferably, 1 spring of installation between first reference column and the cell bottom wall, the external diameter of spring is the same with reference column bottom diameter, and the spring receives the mounting groove spacing, can not produce phenomenons such as slope, spring both ends and reference column bottom surface and cell wall fixed connection.
During installation, the filling body is slowly pressed into the cavity of the piston pin base body, the convex edge and the groove are matched and guided, when the piston pin base body reaches the positioning hole, the first positioning column pushes the positioning hole to limit the displacement of the filling body, and the second positioning column is pressed down to be fixed with the first positioning column, so that the assembly is completed.
Of course, the above is only a specific application example of the present invention, and the protection scope of the present invention is not limited at all. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a novel piston pin structure, includes piston pin base member and obturator, and the obturator is in piston pin base member intracavity and interference fit between the two, its characterized in that, establishes elastic locating element around the obturator on the position department perisporium, and elastic locating element includes first reference column, and piston pin base member chamber wall is corresponding to be provided with the locating hole, and extends circumference on the piston pin base member perisporium and open the spread groove, and the locating hole is located the spread groove tank bottom, and the obturator perisporium is established protruding stupefied, fluting on the corresponding piston pin base member chamber wall.
2. The piston pin structure as claimed in claim 1, wherein the elastic positioning member comprises a positioning cylinder, a stepped first positioning column and a spring, the packing body is provided with a mounting groove, the positioning cylinder is sleeved on the first positioning column and is fixed in the mounting groove in an embedded manner, 1 spring is arranged between the first positioning column and the bottom wall of the groove, and the outer diameter of the spring is 3/5-1 of the diameter of the positioning column.
3. The piston pin structure as claimed in claim 2, further comprising a second positioning post, wherein the second positioning post is disposed in the positioning hole and the second positioning post is fixed to the first positioning post in an embedded manner, and the second positioning post and the first positioning post are provided with a hole along a center line.
4. The piston pin structure as claimed in claim 3, wherein an axial groove is formed between the mounting grooves at the front and rear positions of the packing body, and the openings of the groove walls at both ends of the axial groove are communicated with the mounting grooves.
5. The novel piston pin structure of claim 1, wherein the mounting groove is spaced from the proximal end of the packing body by a distance of 1/5-1/3 of the length of the packing body and the depth of the mounting groove is 1/6-1/5 of the wall thickness of the packing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020975823.7U CN212225973U (en) | 2020-06-01 | 2020-06-01 | Novel piston pin structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020975823.7U CN212225973U (en) | 2020-06-01 | 2020-06-01 | Novel piston pin structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212225973U true CN212225973U (en) | 2020-12-25 |
Family
ID=73931612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020975823.7U Expired - Fee Related CN212225973U (en) | 2020-06-01 | 2020-06-01 | Novel piston pin structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212225973U (en) |
-
2020
- 2020-06-01 CN CN202020975823.7U patent/CN212225973U/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: 20201225 |