CN210460982U

CN210460982U - Piston pin for compressor

Info

Publication number: CN210460982U
Application number: CN201920879369.2U
Authority: CN
Inventors: 张云; 朱谷昌; 巫竹平; 杨兴标; 胡树浩
Original assignee: Hangzhou Qianjiang Refrigeration Compressor Group Co ltd
Current assignee: Hangzhou Qianjiang Refrigeration Compressor Group Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-05-05
Anticipated expiration: 2029-06-12

Abstract

The utility model relates to a compressor accessory technical field discloses a compressor uses piston pin, including the piston pin body, the piston pin body is equipped with the location pinhole that is used for connecting the piston, the piston pin body still is equipped with the connecting hole that is used for connecting the connecting rod microcephaly, the inner of connecting hole is equipped with the oilhole that falls that runs through terminal pin lower extreme face in vertical direction, the outer port department of connecting hole is equipped with the lubrication groove, the utility model discloses a compressor uses the piston pin have can be to between connecting rod and the piston pin, to the beneficial effect of lubrication action, lubricated effectual, convenient to use safety between piston and the piston cylinder inner wall.

Description

Piston pin for compressor

Technical Field

The utility model relates to a compressor accessory technical field especially relates to a compressor uses piston pin.

Background

Piston pin on the piston compressor is a connecting piece of connecting piston and connecting rod, and whole assembly is inboard in the piston, and during operation connecting rod promotes the piston and makes reciprocating motion, when the compressor area load work, takes place violent friction and wearing and tearing between connecting rod and the piston pin, also can take place violent friction and wearing and tearing between piston and the piston cylinder inner wall, need guarantee sufficient lubrication between the above-mentioned fitting surface this moment, and the present piston pin that is used for the compressor does not all possess good lubricating structure. For example: the invention discloses a piston, a piston pin, a piston assembly and an assembling method thereof as well as a compressor comprising the piston assembly, wherein the end part of the piston pin is provided with a flat boss, the boss comprises an arc surface connected with a cylinder of the piston pin and at least one side plane connected with the end surface of a piston pin shaft, the boss is provided with an elastic pin hole, the elastic pin hole is arranged in a penetrating way through the side plane of the boss, the piston is a cavity with one open end and the other closed end, the piston is provided with an upper piston pin hole, the open end is provided with a notch corresponding to the boss of the piston pin, the notch extends from the open end to be communicated with the piston pin hole, and an elastic pin hole is arranged on a solid part close to the closed end The lubricating effect is achieved between the piston and the inner wall of the piston cylinder.

Disclosure of Invention

The utility model discloses a solve the piston pin among the prior art and do not possess between connecting rod and piston pin, to playing the not enough of lubrication action between piston and the piston cylinder inner wall, provide one kind can use the piston pin to the compressor that plays lubrication action between connecting rod and the piston pin, between piston and the piston cylinder inner wall.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the piston pin for the compressor comprises a piston pin body, wherein the piston pin body is provided with a positioning pin hole used for being connected with a piston, the piston pin body is further provided with a connecting hole used for being connected with a small end of a connecting rod, an oil dropping hole penetrating through the lower end face of the piston pin is formed in the inner end of the connecting hole in the vertical direction, and a lubricating groove is formed in the outer port of the connecting hole. The utility model discloses a piston pin is provided with a locating pin hole for connecting a piston, a connecting hole is provided for connecting a small end of a connecting rod, the small end of the connecting rod can throw oil towards the connecting hole when reciprocating, the inner end of the connecting hole is provided with an oil dropping hole which runs through the lower end face of the piston pin in the vertical direction, the lubricating oil thrown into the connecting hole can flow along the connecting hole and the oil dropping hole and flow out of the oil dropping hole under the action of gravity, the flowing lubricating oil can drop into the piston and flow into the fit clearance between the piston and the inner wall of a piston cylinder in the reciprocating motion of the piston, the lubricating oil is completed to lubricate the piston and reduce friction and abrasion, in addition, one part of the lubricating oil thrown towards the connecting hole of the connecting rod can enter into the connecting hole, the other part can enter into the lubrication groove at the outer end of the connecting hole, the lubrication groove is positioned at the outer wall of the piston pin, the lubricating oil in the lubrication groove can flow into, accomplish lubricated, consequently the utility model discloses can be simultaneously to playing the lubrication action between connecting rod and the piston pin, between piston and the piston cylinder inner wall, effectively reduce friction and wearing and tearing, increase of service life.

Preferably, the connection holes are arranged in parallel. The horizontal positioning pin hole is parallel to the motion track of the piston, and the connecting rod can more efficiently throw enough lubricating oil into the connecting hole.

Preferably, the lubrication groove is an annular closed-type ring groove. The lubricating oil can pass through the circumference of the side wall of the whole piston pin along the ring groove, and the effect of uniform lubrication is achieved.

Preferably, the lubrication grooves pass through both sides of the outer end surface of the connection hole. Lubricating oil can be along the two-way lubrication groove of getting rid of simultaneously in the both sides of connecting hole, improves lubricated speed and lubricated effect.

Preferably, the lubrication groove is horizontally arranged. The horizontal lubricating groove achieves the effect of uniform lubrication, and if the lubricating groove inclines upwards or downwards, the phenomenon that the lubrication on one side far away from the connecting hole or one side close to the connecting hole is insufficient can be caused.

Preferably, the longitudinal section of the lubrication groove is V-shaped. The lubricating groove with the V-shaped section can better store oil and is convenient for the lubricating oil to flow out to the low-level side.

Preferably, the maximum depth of the lubrication groove is 0.3 cm or less. The lubricating groove with proper depth can effectively store oil and prevent oil leakage.

Therefore, the utility model discloses a compressor uses piston pin possesses following advantage: can lubricate between the connecting rod and the piston pin and between the piston and the inner wall of the piston cylinder, and has good lubricating effect and convenient and safe use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is an assembly view of the piston pin.

Wherein: the piston pin comprises a piston pin body 1, a positioning pin hole 2, a connecting hole 3, a piston 4, a connecting rod small end 5, an oil dropping hole 6 and a lubricating groove 7.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

As shown in fig. 1 and 2, a compressor uses a wrist pin, and fig. 3 is an assembly view of the wrist pin, in which:

the piston pin comprises a piston pin body 1, the piston pin body is provided with a positioning pin hole 2 and a connecting hole 3 in the horizontal direction, the positioning pin hole is used for connecting a piston 4, the connecting hole is used for connecting a small connecting rod head 5, the inner end of the connecting hole is provided with an oil dropping hole 6 penetrating through the lower end face of the piston pin in the vertical direction, the outer end face of the connecting hole is provided with a horizontal closed annular lubricating groove 7, the lubricating groove penetrates through two sides of the outer end face of the connecting hole, the longitudinal section of the lubricating groove is V-shaped, the maximum depth of the lubricating groove is less than or equal to 0.3 cm, when a compressor moves under load, the small connecting rod head pushes the piston pin and the piston to do reciprocating motion, the small connecting rod head is provided with an oil feeding mechanism and can throw oil towards the connecting hole, the inner end of the connecting hole is provided with an oil dropping hole penetrating through the lower end face in the vertical, the lubricating oil of outflow can drop in the piston to flow in the fit clearance to piston and piston cylinder inner wall in the reciprocating motion of piston, accomplish the lubrication to it, reduce friction and wearing and tearing, in addition, the connecting rod gets rid of and partly can enter into the connecting hole to the lubricating oil of connecting hole, another part then can enter into the lubrication groove of the outer port department of connecting hole, the lubrication groove is located the outer wall department of piston pin, the lubricating oil of lubrication inslot can flow in to between the fit clearance between them when connecting rod and piston pin take place to rotate, form the oil film, accomplish the lubrication, therefore the utility model discloses can be simultaneously to between connecting rod and the piston pin, play the lubrication action between piston and the piston cylinder inner wall, can effectively reduce friction and wearing and tearing, increase of service life.

The utility model discloses a compressor uses the piston pin to have can be to between connecting rod and the piston pin, to having lubricated effect, lubricated effectual, the convenient to use safe beneficial effect between piston and the piston cylinder inner wall.

Claims

1. The piston pin for the compressor comprises a piston pin body and is characterized in that the piston pin body is provided with a positioning pin hole used for being connected with a piston, the piston pin body is further provided with a connecting hole used for being connected with a small end of a connecting rod, an oil dropping hole penetrating through the lower end face of the piston pin is formed in the inner end of the connecting hole in the vertical direction, and a lubricating groove is formed in the outer port of the connecting hole.

2. A piston pin for use in a compressor according to claim 1, wherein said connecting holes are formed in parallel.

3. A compressor use piston pin according to claim 1, wherein said lubrication groove is an annular closed ring groove.

4. A piston pin for use in a compressor according to claim 3, wherein said lubrication grooves are formed through both sides of an outer end surface of the connection hole.

5. A compressor use piston pin according to claim 1 or 3, characterized in that said lubrication grooves are arranged horizontally.

6. A piston pin for use in a compressor according to claim 1 or 3, wherein said lubrication groove has a V-shaped longitudinal section.

7. A compressor use piston pin according to claim 1 or 3, characterized in that the maximum depth of said lubricating groove is equal to or less than 0.3 cm.