CN210106569U - Piston pin suitable for high-speed and high-horsepower engine - Google Patents
Piston pin suitable for high-speed and high-horsepower engine Download PDFInfo
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- CN210106569U CN210106569U CN201920422855.1U CN201920422855U CN210106569U CN 210106569 U CN210106569 U CN 210106569U CN 201920422855 U CN201920422855 U CN 201920422855U CN 210106569 U CN210106569 U CN 210106569U
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- piston pin
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Abstract
The utility model relates to a piston pin suitable for high-speed, high horsepower engine. The piston comprises a piston body, wherein a through hole is formed in the piston body, a plurality of small holes which are radially arranged are formed in the surface of the piston body, and a plurality of clamping grooves which are annularly arranged are formed in the inner surface of the through hole; an annular spring is arranged in the clamping groove and slightly protrudes out of the inner surface of the through hole; the small hole is communicated with the clamping groove, and a long rod penetrates through the small hole and abuts against the annular spring; the long rod is arranged in a hollow mode, and a cavity formed by the long rod is used for lubricating oil to circulate. The utility model discloses an improvement to the piston pin structure for connection structure between piston pin and the relevant part is more firm reliable, simultaneously the utility model discloses can improve the lubricating property of piston pin, improve the operational environment of piston pin, effectively improve the life of piston pin, possess fine performance.
Description
Technical Field
The utility model relates to a be applicable to piston pin for high-speed, high horsepower engine belongs to automobile parts technical field.
Background
The piston pin is a cylindrical pin arranged on the skirt part of the piston, the middle part of the piston pin penetrates through the small end hole of the connecting rod and is used for connecting the piston rod and the connecting rod, and the function of the piston pin is to transmit the gas acting force born by the piston to the connecting rod or enable the small end of the connecting rod to drive the piston to move together; the piston pin bears large periodic impact load under high temperature condition, and because the swinging angle of the piston pin in the pin hole is not large, a lubricating oil film is difficult to form, so the lubricating condition is poor.
Therefore, it is important to enhance the performance of the piston pin to effectively reinforce the coupling strength between the piston pin and the piston or the connecting rod, or to enhance the lubrication condition as much as possible.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects, the utility model provides a piston pin for high-speed, high horsepower engine, which is reasonable in structure and can effectively improve the use performance.
Therefore, the utility model adopts the technical scheme that: a piston pin suitable for a high-speed and high-horsepower engine comprises a piston body (1), wherein a through hole (2) is formed in the piston body (1), a plurality of small holes (3) arranged in the radial direction are formed in the surface of the piston body (1), and a plurality of clamping grooves (4) arranged in the circumferential direction are formed in the inner surface of the through hole (2);
an annular spring (5) is arranged in the clamping groove (4), and the annular spring (5) slightly protrudes out of the inner surface of the through hole (2);
the small hole (3) is communicated with the clamping groove (4), and a long rod (6) penetrates through the small hole (3) and abuts against the annular spring (5);
the long rod (6) is arranged in a hollow mode, and a cavity formed by the long rod (6) is used for lubricating oil to flow through.
The clamping groove (4) is obliquely arranged, and the clamping groove (4) and the longitudinal plane are obliquely arranged at an angle of 5-30 degrees.
The through hole (2) comprises a circular truncated cone-shaped through hole (21) positioned at two sides of the piston body (1) and a cylindrical through hole (22) positioned between the two circular truncated cone-shaped through holes (21);
the cylindrical through hole (22) comprises a large through hole (221) and a small through hole (222) which are in a step structure form, and the clamping groove (4) is arranged in the small through hole (222).
An annular elastic tube (7) is arranged on the inner surface of the large through hole (221), a cavity filled with high-pressure gas is formed in the annular elastic tube (7), a channel is formed in the surface of the piston body (1), and an air tube penetrates through the channel to form the annular elastic tube (7) to be inflated.
The radius of the large through hole (221) is 1-5mm larger than that of the small through hole (222).
The piston body (1) surface is seted up a plurality of lightening holes (11), lightening hole (11) are filled with elastomer (12), elastomer (12) surface is provided with a plurality of rectangular shape sand grips, rectangular shape sand grip with the inner wall of lightening hole (11) contacts.
The long-strip-shaped convex strips are uniformly distributed on the outer surface of the elastic body (12), and the elastic body (12) is arranged on the outer surface of the elastic body (12) in an intermittent mode.
The utility model has the advantages that: the utility model discloses an improvement to the piston pin structure for connection structure between piston pin and the relevant part is more firm reliable, simultaneously the utility model discloses can improve the lubricating property of piston pin, improve the operational environment of piston pin, effectively improve the life of piston pin, possess fine performance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Fig. 4 is an enlarged view of a portion C in fig. 1.
In the figure, 1 is a piston body, 2 is a through hole, 3 is a small hole, 4 is a clamping groove, 5 is an annular spring, 6 is a long rod, and 7 is an annular elastic tube;
11 is a lightening hole, 12 is an elastic body, 21 is a circular truncated cone-shaped through hole, and 22 is a cylindrical through hole;
221 is a large through hole and 222 is a small through hole.
Detailed Description
A piston pin suitable for a high-speed and high-horsepower engine comprises a piston body 1, wherein a through hole 2 is formed in the piston body 1, a plurality of small holes 3 arranged in the radial direction are formed in the surface of the piston body 1, and a plurality of clamping grooves 4 arranged in the circumferential direction are formed in the inner surface of the through hole 2;
an annular spring 5 is arranged in the clamping groove 4, and the annular spring 5 slightly protrudes out of the inner surface of the through hole 2;
the small hole 3 is communicated with the clamping groove 4, and a long rod 6 penetrates through the small hole 3 and abuts against the annular spring 5;
the long rod 6 is arranged in a hollow mode, and lubricating oil can flow through a cavity formed by the long rod 6.
The clamping groove 4 is obliquely arranged, and the clamping groove 4 and the longitudinal plane are obliquely arranged at an angle of 5-30 degrees.
The through hole 2 comprises truncated cone-shaped through holes 21 positioned at two sides of the piston body 1 and a cylindrical through hole 22 positioned between the two truncated cone-shaped through holes 21;
the cylindrical through hole 22 comprises a large through hole 221 and a small through hole 222 which are in a step structure form, and the clamping groove 4 is arranged in the small through hole 222.
An annular elastic tube 7 is arranged on the inner surface of the large through hole 221, a cavity for filling high-pressure gas is formed in the annular elastic tube 7, a channel is formed in the surface of the piston body 1, and a gas pipe penetrates through the channel to form the annular elastic tube 7 for filling gas.
The radius of the large through hole 221 is 1-5mm larger than that of the small through hole 222.
The piston body 1 surface is seted up a plurality of lightening holes 11, lightening hole 11 is filled with elastomer 12, elastomer 12 surface is provided with a plurality of rectangular shape sand grips, rectangular shape sand grip with the inner wall of lightening hole 11 contacts.
The rectangular shape sand grip equipartition sets up the elastomer 12 surface, the form that the elastomer 12 was interrupted the setting is in the surface of elastomer 12.
Following the utility model discloses make further explanation to better understand the utility model discloses: when the related component is connected with the piston pin, the related component firstly passes through the truncated cone-shaped through hole 21, the truncated cone-shaped through hole 21 facilitates the insertion of the related component, realizes certain guidance for the insertion of the related component, and simultaneously realizes the primary connection with the related component; then the relevant part gets into cylindrical through hole 22, and the relevant part and annular spring 5 produce the contact this moment, except that cylindrical through hole 22 fastens the relevant part time to connect, annular spring 5 has further realized the fastening to the relevant part, further the utility model discloses cylindrical through hole 22 sets up the structural style to big through hole 221, little through hole 222, has reduced the connection degree of difficulty of relevant part and piston pin, but annular spring 5 and annular elastic tube 7 that set up simultaneously have realized holding tightly to the relevant part; therefore, the utility model can not only ensure the reliability of the connection between the piston pin and the related parts, but also reduce the difficulty of the connection between the related parts and the piston pin, and has good practicability; the utility model discloses further will stock 6 sets the structural style of cavity to, can form the passageway of lubricating oil circulation, the utility model discloses set up the closing cap at the tip of stock 6, set up a plurality of micropores on the closing cap certainly and supply the lubricating oil circulation, thereby make the utility model discloses a lubricating property obtains certain improvement.
The utility model discloses further set up lightening hole 11 to set up elastomer 12 in lightening hole 11, can reduce the weight of piston pin, simultaneously elastomer 12 set up also can be right the piston pin carries out certain support and buffering, has further improved the performance of piston pin, and the life of piston pin is effectively prolonged.
The material and the specific structure of the ring spring 5 of the present invention are not the innovative points of the present application, and are not specifically described here.
For other structural descriptions which cannot be exhausted, since the prior art can be realized, no further description is made herein, and any structure which can satisfy the requirements of the related functions can be applied to the present invention.
Claims (7)
1. The piston pin for the high-speed and high-horsepower engine is characterized by comprising a piston body (1), wherein a through hole (2) is formed in the piston body (1), a plurality of small holes (3) which are radially arranged are formed in the surface of the piston body (1), and a plurality of clamping grooves (4) which are annularly arranged are formed in the inner surface of the through hole (2);
an annular spring (5) is arranged in the clamping groove (4), and the annular spring (5) slightly protrudes out of the inner surface of the through hole (2);
the small hole (3) is communicated with the clamping groove (4), and a long rod (6) penetrates through the small hole (3) and abuts against the annular spring (5);
the long rod (6) is arranged in a hollow mode, and a cavity formed by the long rod (6) is used for lubricating oil to flow through.
2. A piston pin for a high-speed, high-horsepower engine according to claim 1, wherein the locking groove (4) is obliquely arranged, and the locking groove (4) and the longitudinal plane are obliquely arranged at an angle of 5 to 30 degrees.
3. A piston pin for a high-speed, high-horsepower engine according to claim 1, wherein the through-hole (2) includes a truncated cone-shaped through-hole (21) at both sides of the piston body (1), and a cylindrical through-hole (22) between the two truncated cone-shaped through-holes (21);
the cylindrical through hole (22) comprises a large through hole (221) and a small through hole (222) which are in a step structure form, and the clamping groove (4) is arranged in the small through hole (222).
4. A piston pin suitable for a high-speed and high-horsepower engine according to claim 3, wherein an annular elastic tube (7) is arranged on the inner surface of the large through hole (221), the annular elastic tube (7) is formed with a cavity filled with high-pressure gas, a channel is formed on the surface of the piston body (1), and a gas pipe is arranged to penetrate through the channel to form the inflation of the annular elastic tube (7).
5. A piston pin for a high speed, high horsepower engine according to claim 3 wherein the radius of the large through hole (221) is 1-5mm larger than the radius of the small through hole (222).
6. The piston pin for the high-speed and high-horsepower engine according to claim 1, wherein a plurality of lightening holes (11) are formed in the surface of the piston body (1), an elastic body (12) is filled in the lightening holes (11), a plurality of elongated convex strips are arranged on the surface of the elastic body (12), and the elongated convex strips are in contact with the inner wall of the lightening holes (11).
7. A piston pin suitable for a high-speed and high-horsepower engine according to claim 6, wherein the elongated ribs are uniformly arranged on the outer surface of the elastic body (12), and the elastic body (12) is arranged on the outer surface of the elastic body (12) in an intermittent manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920422855.1U CN210106569U (en) | 2019-03-31 | 2019-03-31 | Piston pin suitable for high-speed and high-horsepower engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920422855.1U CN210106569U (en) | 2019-03-31 | 2019-03-31 | Piston pin suitable for high-speed and high-horsepower engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210106569U true CN210106569U (en) | 2020-02-21 |
Family
ID=69535989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920422855.1U Expired - Fee Related CN210106569U (en) | 2019-03-31 | 2019-03-31 | Piston pin suitable for high-speed and high-horsepower engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210106569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175524A (en) * | 2021-04-27 | 2021-07-27 | 湖北博英精工科技股份有限公司 | Piston pin |
-
2019
- 2019-03-31 CN CN201920422855.1U patent/CN210106569U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175524A (en) * | 2021-04-27 | 2021-07-27 | 湖北博英精工科技股份有限公司 | Piston pin |
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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: 20200221 Termination date: 20210331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |