CN212004214U - Wear-resistant automobile piston - Google Patents
Wear-resistant automobile piston Download PDFInfo
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- CN212004214U CN212004214U CN202020449676.XU CN202020449676U CN212004214U CN 212004214 U CN212004214 U CN 212004214U CN 202020449676 U CN202020449676 U CN 202020449676U CN 212004214 U CN212004214 U CN 212004214U
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Abstract
The utility model discloses a wear-resistant automobile piston, which comprises a piston body with a piston cavity, wherein a wear-resistant layer is covered on the cavity wall of the piston cavity; the wear-resistant layer is of a multilayer structure and comprises a smooth glaze layer and a metal ceramic coating from outside to inside; the wear-resisting property of the piston cavity can be improved by arranging the wear-resisting layer, and the practicability and the wear-resisting service life of the wear-resisting layer can be improved by arranging the double-layer wear-resisting layer.
Description
Technical Field
The utility model belongs to the technical field of auto-parts, refer in particular to a stand wear and tear car piston.
Background
The existing hydraulic brake caliper generally comprises a caliper body, a brake pad and a piston, wherein the piston pushes the brake pad to abut against a brake disc to realize braking. For better braking effect, the two symmetrically arranged pistons are adopted in the brake caliper to respectively push the brake pad on the vehicle at present, the pistons slide with the brake caliper, but the structural strength of the wall of the piston cavity of the pistons is not high, so that the pistons are easy to wear in the working process, and the service life of the whole pistons is shortened.
Disclosure of Invention
To the not enough that prior art exists, the utility model aims to provide a simple structure and stand wear and tear car piston.
In order to achieve the above purpose, the utility model provides a following technical scheme: a wear-resistant automobile piston comprises a piston body with a piston cavity, wherein a wear-resistant layer covers the cavity wall of the piston cavity; the wear-resistant layer is of a multilayer structure and comprises a smooth glaze layer and a metal ceramic coating from outside to inside.
Through adopting foretell technical scheme, can improve the wear resistance in piston chamber through setting up the stand wear layer, and can improve the practicality and the wear life of stand wear layer through setting up of double-deck wearing layer.
The utility model discloses further set up to: the thickness ratio of the smooth glaze layer to the metal ceramic coating is 2: 1.
the utility model discloses further set up to: the metal ceramic coating is made of chromium carbide.
By adopting the technical scheme, the metal ceramic coating is made of chromium carbide, so that the wear-resistant and corrosion-resistant performances of the wear-resistant layer can be ensured.
The utility model discloses further set up to: an inner cylinder is arranged in the piston body, the piston cavity is arranged on the inner cylinder, a lubricating cavity with a ring column shape is formed between the outer side of the inner cylinder and the piston body, and a plurality of lubricating holes which are uniformly distributed and communicated to the lubricating cavity are arranged on the cavity wall of the piston cavity; the piston body is provided with a matching groove matched with the supporting edge, and a fastening bolt for fixing the supporting edge on the matching groove; and a sealing sheet is arranged between the supporting edge and the matching groove.
By adopting the technical scheme, the lubricating cavity can be used for storing lubricating oil, so that the lubricating oil enters the piston cavity through the lubricating hole to lubricate; the inner cylinder is arranged, so that the machining of the lubricating cavity is facilitated; the regular hexagonal supporting edge can play a good limiting role on the inner cylinder during assembly, the inner cylinder is prevented from rotating, and the fastening bolt can play a good fixing effect; the sealing sheet arranged between the supporting edge and the matching groove can play a good sealing effect.
The utility model discloses further set up to: an oil filling hole extending to the lubricating cavity is formed in the outer side of the piston body, and a plug is arranged on the oil filling hole.
Through adopting foretell technical scheme, be provided with the oil filler point that extends to lubricated chamber in the outside of piston body to can conveniently get lubricating oil to lubricated intracavity injection after the piston has been assembled.
The utility model discloses further set up to: and a plurality of reinforcing ribs which are uniformly distributed according to the circumference are arranged on the outer side of the inner cylinder and the part which is positioned in the lubricating cavity.
Through adopting foretell technical scheme, set up the strengthening rib and can improve the structural strength of inner tube in the inner tube outside.
The utility model discloses further set up to: the piston is characterized in that a limiting lug in a hexagonal frustum pyramid shape is arranged at the bottom of the inner cylinder, and a limiting groove matched with the limiting lug is formed in the piston body.
Through adopting foretell technical scheme, be provided with the spacing lug that is hexagonal frustum of prism shape at inner tube bottom to can further play spacing and transmission moment of torsion's effect to the inner tube.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at I in FIG. 1;
reference numbers in the drawings and corresponding part names: 1-a piston body, 2-a wear-resistant layer, 2 a-a smooth glaze layer, 2 b-a metal ceramic coating, 3-an inner cylinder, 4-a lubricating cavity, 5-a lubricating hole, 6-a supporting edge, 7-a sealing sheet, 8-a fastening bolt, 9-an oil injection hole, 10-a reinforcing rib and 11-a limiting bump.
Detailed Description
An embodiment of the present invention is further explained with reference to fig. 1 to 3.
A wear-resistant automobile piston comprises a piston body 1 with a piston cavity, wherein a wear-resistant layer 2 covers the cavity wall of the piston cavity; the wear-resistant layer 2 is of a multilayer structure and comprises a smooth glaze layer 2a and a metal ceramic coating layer 2b from outside to inside.
Through adopting foretell technical scheme, can improve the wear resistance in piston chamber through setting up stand wear layer 2, and can improve stand wear layer 2's practicality and wear life through setting up of double-deck wearing layer.
The utility model discloses further set up to: the thickness ratio of the smooth glaze layer 2a to the metal ceramic coating layer 2b is 2: 1.
the utility model discloses further set up to: the metal ceramic coating 2b is made of chromium carbide.
By adopting the technical scheme, the metal ceramic coating 2b is made of chromium carbide, so that the wear-resistant and corrosion-resistant performances of the wear-resistant layer can be ensured.
The utility model discloses further set up to: an inner cylinder 3 is arranged in the piston body 1, the piston cavity is arranged on the inner cylinder 3, a ring-column-shaped lubricating cavity 4 is formed between the outer side of the inner cylinder 3 and the piston body 1, and a plurality of lubricating holes 5 which are uniformly distributed and communicated to the lubricating cavity 4 are arranged on the cavity wall of the piston cavity; a supporting edge 6 is arranged on the end face of the inner cylinder 3, the cross section of the supporting edge 6 is in a regular hexagon shape, a matching groove matched with the supporting edge 6 is arranged on the piston body 1, and a fastening bolt 8 for fixing the supporting edge 6 on the matching groove is arranged; and a sealing sheet 7 is arranged between the supporting edge 6 and the mating groove.
By adopting the technical scheme, the lubricating cavity 4 can be used for storing lubricating oil, so that the lubricating oil enters the piston cavity through the lubricating hole 5 to lubricate; the inner cylinder 3 is arranged to facilitate the processing of the lubricating cavity 4; the regular hexagonal supporting edge 6 can play a good limiting role in the assembly of the inner barrel 3, the rotation of the inner barrel 3 is avoided, and the fastening bolt 8 can play a good fixing effect; the sealing sheet 7 is arranged between the supporting edge 6 and the matching groove to achieve good sealing effect.
The utility model discloses further set up to: an oil filling hole 9 extending to the lubricating cavity 4 is formed in the outer side of the piston body 1, and a plug is arranged on the oil filling hole 9.
Through adopting foretell technical scheme, be provided with the oil filler point 9 that extends to lubricated chamber 4 in the outside of piston body 1 to can conveniently get to pour into lubricating oil into in lubricated chamber 4 after the piston has been assembled.
The utility model discloses further set up to: a plurality of reinforcing ribs 10 which are uniformly distributed according to the circumference are arranged on the outer side of the inner cylinder 3 and the part which is positioned in the lubricating cavity 4.
By adopting the technical scheme, the reinforcing ribs 10 are arranged on the outer side of the inner barrel 3, so that the structural strength of the inner barrel 3 can be improved.
The utility model discloses further set up to: the bottom of the inner cylinder 3 is provided with a limit lug 11 in a hexagonal frustum shape, and the piston body 1 is provided with a limit groove matched with the limit lug 11.
Through adopting foretell technical scheme, be provided with the spacing lug 11 that is hexagonal frustum pyramid shape in inner tube 3 bottom to can further play spacing and the effect of transmission moment of torsion to inner tube 3.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. A wear-resistant automobile piston comprises a piston body (1) with a piston cavity, and is characterized in that: a wear-resistant layer (2) covers the cavity wall of the piston cavity; the wear-resistant layer (2) is of a multilayer structure and comprises a smooth glaze layer (2a) and a metal ceramic coating (2b) from outside to inside.
2. A wear resistant automotive piston as claimed in claim 1, wherein: the thickness ratio of the smooth glaze layer (2a) to the metal ceramic coating (2b) is 2: 1.
3. a wear resistant automotive piston as claimed in claim 2, wherein: the metal ceramic coating (2b) is made of chromium carbide.
4. A wear resistant automotive piston as claimed in claim 3, wherein: an inner cylinder (3) is arranged in the piston body (1), and the piston cavity is arranged on the inner cylinder (3); a ring-column-shaped lubricating cavity (4) is formed between the outer side of the inner cylinder (3) and the piston body (1), and a plurality of lubricating holes (5) which are uniformly distributed and communicated with the lubricating cavity (4) are formed in the cavity wall of the piston cavity; and the end surface of the inner cylinder (3) is provided with a supporting edge (6), the cross section of the supporting edge (6) is in a regular hexagon, the piston body (1) is provided with a matching groove matched with the supporting edge (6), a sealing sheet (7) is arranged between the supporting edge (6) and the matching groove, and a fastening bolt (8) for fixing the supporting edge (6) on the matching groove is arranged.
5. A wear resistant automotive piston as claimed in claim 4, wherein: an oil filling hole (9) extending to the lubricating cavity (4) is arranged on the outer side of the piston body (1).
6. A wear resistant automotive piston as claimed in claim 5, wherein: a plurality of reinforcing ribs (10) which are uniformly distributed according to the circumference are arranged on the outer side of the inner cylinder (3) and the part which is positioned in the lubricating cavity (4).
7. A wear resistant automotive piston as claimed in claim 6, wherein: the piston is characterized in that a limiting lug (11) in a hexagonal frustum pyramid shape is arranged at the bottom of the inner cylinder (3), and a limiting groove matched with the limiting lug (11) is formed in the piston body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020449676.XU CN212004214U (en) | 2020-03-31 | 2020-03-31 | Wear-resistant automobile piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020449676.XU CN212004214U (en) | 2020-03-31 | 2020-03-31 | Wear-resistant automobile piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212004214U true CN212004214U (en) | 2020-11-24 |
Family
ID=73422077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020449676.XU Active CN212004214U (en) | 2020-03-31 | 2020-03-31 | Wear-resistant automobile piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212004214U (en) |
-
2020
- 2020-03-31 CN CN202020449676.XU patent/CN212004214U/en active Active
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