CN213088189U

CN213088189U - Compressor piston

Info

Publication number: CN213088189U
Application number: CN202021074437.7U
Authority: CN
Inventors: 徐信国; 黄益军; 苏高辉
Original assignee: Ningbo Ningjiang Powder Metallurgy Co ltd
Current assignee: Ningbo Ningjiang Powder Metallurgy Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-04-30
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a compressor piston, including the piston body, be provided with a plurality of piston ring mounting grooves that distribute from top to bottom on the periphery wall of piston body lower extreme, all be provided with inward boss on the inner wall of the left and right sides of piston body, be provided with the through-hole in the boss, the through-hole runs through the lateral wall of boss and piston body, the outer tip department of each through-hole all is provided with the annular step of outside expansion, annular step and through-hole coaxial setting, inlay in the annular step and be equipped with the bearing, the outer lane in the bearing is in close fit with annular step, the internal diameter of the inner circle in the bearing is less than the aperture of; the utility model discloses a setting of bearing, after the piston is connected through round pin axle and connecting rod, the inner circle tight fit of round pin axle and bearing, the connecting rod rotates with the round pin axle to be connected, because the effect of bearing for round pin axle itself can the relative piston rotate, and so can avoid producing the friction between round pin axle and the piston, thereby can avoid the phenomenon that appears wearing and tearing between round pin axle and the piston.

Description

Compressor piston

Technical Field

The utility model relates to a compressor technical field, concretely relates to compressor piston.

Background

The piston of the compressor is an important component of the compressor, and when in work, the piston is in transmission connection with a connecting rod in the compressor, namely the connecting rod in the compressor is in transmission connection with the piston through a pin shaft penetrating through the connecting rod and the piston; however, when the compressor works, because certain torsion exists between the pin shaft and the piston, in such a way, in the process that the connecting rod drives the piston to move up and down for a long time through the pin shaft, the pin shaft and the piston can rotate in front of the piston, namely, the pin shaft and the piston can generate rotational friction, so that the pin shaft and the piston can be abraded, and then the phenomena of deviation, jumping and deflection can occur between the pin shaft and the piston, and the normal driving of the connecting rod to the piston can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a compressor piston, its setting through the bearing, after the piston is connected through round pin axle and connecting rod, the inner circle tight fit of round pin axle and bearing, the connecting rod rotates with the round pin axle to be connected, because the effect of bearing for round pin axle itself can the relative piston rotate, so, can avoid producing the friction between round pin axle and the piston to can avoid appearing the phenomenon of wearing and tearing between round pin axle and the piston.

The utility model discloses a compressor piston, including the piston body, be provided with a plurality of piston ring mounting grooves that distribute from top to bottom on the periphery wall of piston body lower extreme, all be provided with inward boss on the left and right sides inner wall of piston body, be provided with the through-hole in the boss, the through-hole runs through the lateral wall of boss and piston body, the outer tip department of every through-hole all is provided with the annular step of outside expansion, annular step and the coaxial setting of through-hole, it is equipped with the bearing to inlay in the annular step, outer lane and annular step tight fit in the bearing, the internal diameter of the inner circle in the bearing is less than the aperture of.

The utility model discloses a compressor piston, wherein, an annular arc transition surface is arranged between the outer peripheral wall of the boss and the inner side wall of the piston body; through the setting of the circular arc transition surface of annular form, can improve the structural strength between boss and the piston body, can avoid appearing cracked phenomenon between boss and the piston body.

The utility model discloses a setting of bearing, after the piston is connected through round pin axle and connecting rod, the inner circle tight fit of round pin axle and bearing, the connecting rod rotates with the round pin axle to be connected, because the effect of bearing for round pin axle itself can the relative piston rotate, and so can avoid producing the friction between round pin axle and the piston, thereby can avoid the phenomenon that appears wearing and tearing between round pin axle and the piston.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic sectional view of the present invention.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model discloses a compressor piston, including piston body 1, be provided with a plurality of piston ring mounting grooves 11 that distribute from top to bottom on the periphery wall of piston body 1 lower extreme, all be provided with inward boss 12 on the inner wall of the left and right sides of piston body 1, be provided with through-hole 13 in the boss 12, through-hole 13 runs through the lateral wall of boss 12 and piston body 1, the outer tip department of each through-hole 13 all is provided with the annular step 14 of outside expansion, annular step 14 and through-hole 13 coaxial arrangement, inlay in the annular step 14 and be equipped with bearing 2, the outer lane in the bearing 2 is close-fitting with annular step 14, the internal diameter of the inner circle in the bearing 2 is less than the aperture of through-; the utility model discloses a setting of bearing, after the piston is connected through round pin axle and connecting rod, the inner circle tight fit of round pin axle and bearing, the connecting rod rotates with the round pin axle to be connected, because the effect of bearing for round pin axle itself can the relative piston rotate, and so can avoid producing the friction between round pin axle and the piston, thereby can avoid the phenomenon that appears wearing and tearing between round pin axle and the piston.

An annular arc transition surface 15 is arranged between the outer peripheral wall of the boss 12 and the inner side wall of the piston body 1; through the setting of the circular arc transition surface of annular form, can improve the structural strength between boss and the piston body, can avoid appearing cracked phenomenon between boss and the piston body.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a compressor piston, includes piston body (1), be provided with a plurality of piston ring mounting grooves (11) that distribute from top to bottom on the periphery wall of piston body (1) lower extreme, all be provided with inward boss (12) on the left and right sides inner wall of piston body (1), be provided with through-hole (13) in boss (12), through-hole (13) run through the lateral wall of boss (12) and piston body (1), its characterized in that: an outward-expanding annular step (14) is arranged at the outer end of each through hole (13), the annular steps (14) and the through holes (13) are coaxially arranged, a bearing (2) is embedded in each annular step (14), an outer ring in each bearing (2) is tightly matched with each annular step (14), and the inner diameter of an inner ring in each bearing (2) is smaller than the aperture of each through hole (13).

2. The compressor piston according to claim 1, characterized in that a circular arc transition surface (15) in the shape of a ring is provided between the outer peripheral wall of the boss (12) and the inner side wall of the piston body (1).