CN113175524A - Piston pin - Google Patents
Piston pin Download PDFInfo
- Publication number
- CN113175524A CN113175524A CN202110456754.8A CN202110456754A CN113175524A CN 113175524 A CN113175524 A CN 113175524A CN 202110456754 A CN202110456754 A CN 202110456754A CN 113175524 A CN113175524 A CN 113175524A
- Authority
- CN
- China
- Prior art keywords
- hole
- piston pin
- pin body
- communicated
- support column
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention relates to a piston pin, which comprises a piston pin body, wherein a first through hole is axially arranged in the piston pin body, a fixing hole communicated with the first through hole is formed in the piston pin body, a supporting column is fixed in the fixing hole, and the supporting column penetrates through the first through hole and is connected with the piston pin body; the support column is provided with a center hole communicated with the fixing hole in the axial direction, the support column is provided with a through hole, and the center hole and the first through hole are communicated with the through hole respectively. According to the piston pin provided by the embodiment of the invention, the fixing holes and the supporting columns are arranged, and the central holes and the through holes are formed in the supporting columns, so that the heat on the surface of the piston pin is dissipated through the first through holes after passing through the fixing holes, the central holes and the through holes in the process of piston movement on the premise of ensuring the overall strength of the piston pin, and the heat dissipation capacity of the surface of the piston pin is improved.
Description
Technical Field
The invention relates to the technical field of piston accessories, in particular to a piston pin.
Background
The piston pin is a cylindrical pin arranged on the skirt part of the piston and used for connecting the piston and the connecting rod, and the piston pin and the connecting rod generate friction during the movement of the piston and further generate heat, so that the piston pin not only needs to bear periodic impact load but also needs to bear high temperature during the movement of the piston, and therefore, the requirement on the high temperature resistance of the piston pin is high.
Disclosure of Invention
The embodiment of the invention provides a piston pin, which is convenient for the surface heat dissipation and cooling of a piston pin in the motion of a piston.
In order to solve the problems in the background art, an embodiment of the present invention provides a piston pin, including a piston pin body, a first through hole is axially formed in the piston pin body, a fixing hole communicated with the first through hole is formed in the piston pin body, a supporting pillar is fixed in the fixing hole, and the supporting pillar passes through the first through hole and is connected with the piston pin body; the support column is provided with a center hole communicated with the fixing hole in the axial direction, the support column is provided with a through hole, and the center hole and the first through hole are communicated with the through hole respectively.
Preferably, the middle part of the first through hole is cylindrical, the two end parts of the first through hole are truncated cone-shaped, and the middle part and the two end parts are in smooth transition; the diameter of the middle part is smaller than the diameters of the two ends; the fixing hole is located at a middle position of the piston pin body.
Preferably, a strip-shaped groove is circumferentially formed in the surface of the piston pin body, two ends of the groove are closed, a first backflow hole is formed in the groove, two ends of the first through hole are provided with plugs, and at least one plug is detachably connected with the piston pin body; a second through hole is axially formed in the plug, a second backflow hole communicated with the second through hole is circumferentially formed in the surface of the plug, and the second backflow hole is communicated with the first backflow hole; and one end of the plug, which is far away from the support column, is provided with an elastic sealing sheet.
Preferably, both the plugs are in threaded connection with the piston pin body; the distance from one end, close to the support column, of the plug to the second backflow hole is larger than the diameter of the first backflow hole.
Preferably, the elastic sealing sheet is a rubber sheet or a silica gel sheet.
Preferably, both ends of the central hole are communicated with the fixing holes.
According to the piston pin, the fixing holes and the supporting columns are arranged, and the central holes and the through holes are formed in the supporting columns, so that heat on the surface of the piston pin is dissipated through the fixing holes, the central holes and the through holes in the process of piston movement on the premise that the overall strength of the piston pin is guaranteed, and the heat dissipation capacity of the surface of the piston pin is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is one of the structural schematic views of a piston pin of the present invention;
FIG. 2 is a second schematic structural view of a piston pin of the present invention;
FIG. 3 is a schematic view of the inner structure of the plug of FIG. 2;
reference numerals in the figures; the sealing structure comprises a piston pin body 1, a first through hole 2, a fixing hole 3, a support pillar 4, a center hole 5, a through hole 6, a groove 7, a first backflow hole 8, a plug 9, a second through hole 10, a second backflow hole 11 and an elastic sealing sheet 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, referring to fig. 1, the invention provides a piston pin, which includes a piston pin body 1, a first through hole 2 is axially arranged inside the piston pin body, a fixing hole 3 communicated with the first through hole is arranged on the piston pin body, a supporting pillar 4 is fixed in the fixing hole, the supporting pillar passes through the first through hole and is connected with the piston pin body, a radial support is formed on the piston pin body, and damage caused by insufficient strength of the piston pin at the fixing hole is prevented; in order to increase the support firmness of the support column, two ends of the support column can be in threaded connection with the piston pin body, one end of the support column is located in the fixing hole, the other end of the support column is located in the groove of the piston pin body, and the piston pin does not swing in the pin hole at a large angle, so that one end of the support column located in the groove can be arranged corresponding to the swinging position; the support column is provided with a center hole 5 communicated with the fixing hole in the axial direction, the support column is provided with a through hole 6, and the center hole and the first through hole are respectively communicated with the through hole. In the embodiment, in order to prevent the bending deformation of the piston pin and further damage to the piston pin boss, the applicant sets the middle part of the first through hole to be cylindrical, the two end parts are in a truncated cone shape, and the middle part and the two end parts are in smooth transition; the diameter of the middle part is smaller than the diameters of the two ends of the first through hole; the fixing hole is located at a middle position of the piston pin body.
Foretell piston pin is through setting up fixed orifices and support column to with setting up centre bore and perforation on the support column, under the prerequisite of guaranteeing the bulk strength of piston pin, make the surperficial heat of piston pin in the in-process of piston motion distribute through first through-hole after fixed orifices, centre bore and perforation, improved the heat-sinking capability on piston pin surface.
When the piston pin in the embodiment is used, after the piston pin and the piston pin seat are fixed, the piston pin seat can block the groove, then the plug is installed after the heat dissipation liquid or the lubricating liquid is injected into the first through hole, and the rubber sheet or the silica gel sheet has elasticity, so that more heat dissipation liquid or lubricating liquid can be contained, in the process of piston movement, the rubber sheet or the silica gel sheet is periodically deformed and recovered to drive the heat dissipation liquid or the lubricating liquid in the first through hole to extrude or draw the heat dissipation liquid or the lubricating liquid in the groove through the second backflow hole and the first backflow hole, and when the heat dissipation liquid or the lubricating liquid in the groove is extruded or drawn, the heat dissipation liquid or the lubricating liquid in the groove extrudes or draws the heat dissipation liquid or the lubricating liquid in the first through hole through the fixing hole, the central hole and the through hole, so that the liquid in the groove flows to be heat exchanged with the heat dissipation liquid or the lubricating liquid in the first through hole, achieving better heat dissipation or lubrication effect.
In a preferred embodiment, both the plugs are in threaded connection with the piston pin body; the distance from one end, close to the support column, of the plug to the second backflow hole is larger than the diameter of the first backflow hole. When the structure is used, the piston pin and the piston pin seat are fixed well, the piston pin seat can block the groove, then one of the plugs is plugged at one end of the first through hole, the plug is properly unscrewed during plugging, the first backflow hole and the second backflow hole are staggered, another plug is installed after heat dissipation liquid or lubricating liquid is injected into the first through hole, and finally the unscrewed plug is screwed down. The structure is more convenient for injecting heat dissipation liquid or lubricating liquid into the first through hole, and can contain more heat dissipation liquid or lubricating liquid.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A piston pin comprises a piston pin body (1), wherein a first through hole (2) is axially formed in the piston pin body, and the piston pin is characterized in that a fixing hole (3) communicated with the first through hole is formed in the piston pin body, a supporting column (4) is fixed in the fixing hole, and the supporting column penetrates through the first through hole and is connected with the piston pin body;
the support column is provided with a center hole (5) communicated with the fixing hole in the axial direction, the support column is provided with a through hole (6), and the center hole and the first through hole are communicated with the through hole respectively.
2. The piston pin of claim 1, wherein said first bore has a cylindrical shape in a middle portion and truncated circular cone shapes in both end portions, said middle portion and said end portions being in smooth transition;
the diameter of the middle part is smaller than the diameters of the two ends;
the fixing hole is located at a middle position of the piston pin body.
3. A piston pin according to claim 1 or 2, characterized in that the surface of the piston pin body is provided circumferentially with a strip-shaped groove (7), both ends of which are closed and provided with a first return hole (8), both ends of the first through hole being provided with plugs (9), at least one of which is detachably connected with the piston pin body;
a second through hole (10) is axially formed in the plug, a second backflow hole (11) communicated with the second through hole is circumferentially formed in the surface of the plug, and the second backflow hole is communicated with the first backflow hole;
and one end of the plug, which is far away from the support column, is provided with an elastic sealing sheet (12).
4. A piston pin according to claim 3, characterized in that both said plugs are screwed to said piston pin body;
the distance from one end, close to the support column, of the plug to the second backflow hole is larger than the diameter of the first backflow hole.
5. The piston pin of claim 3, wherein said elastic sealing piece is a rubber piece or a silicone piece.
6. The piston pin of claim 1, wherein said securing aperture is in communication with both ends of said central bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110456754.8A CN113175524B (en) | 2021-04-27 | 2021-04-27 | Piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110456754.8A CN113175524B (en) | 2021-04-27 | 2021-04-27 | Piston pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113175524A true CN113175524A (en) | 2021-07-27 |
| CN113175524B CN113175524B (en) | 2022-09-02 |
Family
ID=76926354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110456754.8A Active CN113175524B (en) | 2021-04-27 | 2021-04-27 | Piston pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113175524B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989864A (en) * | 1982-11-12 | 1984-05-24 | Toyota Motor Corp | Piston pin |
| DE3806929A1 (en) * | 1988-03-03 | 1989-09-14 | Mahle Gmbh | Securing of piston pins |
| DE102008062218A1 (en) * | 2008-12-13 | 2010-06-24 | Mahle International Gmbh | Piston for internal combustion engine, has wire guided into circulating channel over feed channel exhibiting same cross section as circulating channel, where feed channel passes from outer surface of lug to circulating channel |
| CN107355533A (en) * | 2017-08-18 | 2017-11-17 | 黄石市科兴机电科技有限公司 | A kind of piston pin easy to use |
| CN210106569U (en) * | 2019-03-31 | 2020-02-21 | 扬州光辉汽车零部件有限公司 | Piston pin suitable for high-speed and high-horsepower engine |
| CN212131276U (en) * | 2020-05-13 | 2020-12-11 | 余姚市华辰机械有限公司 | Piston pin with high heat dissipation performance |
| CN212225974U (en) * | 2020-06-01 | 2020-12-25 | 余姚市华辰机械有限公司 | Wear-resisting type piston pin |
| CN212407542U (en) * | 2020-06-16 | 2021-01-26 | 北京汽车动力总成有限公司 | Piston pin, engine and vehicle |
-
2021
- 2021-04-27 CN CN202110456754.8A patent/CN113175524B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989864A (en) * | 1982-11-12 | 1984-05-24 | Toyota Motor Corp | Piston pin |
| DE3806929A1 (en) * | 1988-03-03 | 1989-09-14 | Mahle Gmbh | Securing of piston pins |
| DE102008062218A1 (en) * | 2008-12-13 | 2010-06-24 | Mahle International Gmbh | Piston for internal combustion engine, has wire guided into circulating channel over feed channel exhibiting same cross section as circulating channel, where feed channel passes from outer surface of lug to circulating channel |
| CN107355533A (en) * | 2017-08-18 | 2017-11-17 | 黄石市科兴机电科技有限公司 | A kind of piston pin easy to use |
| CN210106569U (en) * | 2019-03-31 | 2020-02-21 | 扬州光辉汽车零部件有限公司 | Piston pin suitable for high-speed and high-horsepower engine |
| CN212131276U (en) * | 2020-05-13 | 2020-12-11 | 余姚市华辰机械有限公司 | Piston pin with high heat dissipation performance |
| CN212225974U (en) * | 2020-06-01 | 2020-12-25 | 余姚市华辰机械有限公司 | Wear-resisting type piston pin |
| CN212407542U (en) * | 2020-06-16 | 2021-01-26 | 北京汽车动力总成有限公司 | Piston pin, engine and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113175524B (en) | 2022-09-02 |
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