CN220081623U

CN220081623U - Connecting structure of compressor piston and piston ring

Info

Publication number: CN220081623U
Application number: CN202321384275.0U
Authority: CN
Inventors: 邓爱根; 樊柏明
Original assignee: Guangzhou Anpu Automotive Air Conditioning Co ltd
Current assignee: Guangzhou Anpu Automotive Air Conditioning Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-11-24
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a connecting structure of a compressor piston and a piston ring, which comprises a main body and the piston ring, wherein piston heads are respectively arranged at two ends of the main body, a limiting device is arranged on the piston heads, mounting grooves are further arranged on the piston heads, a plurality of axial linear grooves are arranged in the mounting grooves at equal intervals, a plurality of axial linear protrusions are arranged at the inner periphery of the piston ring, the axial linear protrusions are arranged at equal heights, the axial linear protrusions are arranged on the inner peripheral surface of the piston ring at equal intervals, and the main body and the piston ring are connected with the axial linear protrusions in a matched manner through the axial linear grooves, so that friction force between the piston ring and the piston can be ensured, and the situation that relative sliding between the piston ring and the piston can not occur is further ensured.

Description

Connecting structure of compressor piston and piston ring

Technical Field

The utility model belongs to the field of compressors, and particularly relates to a connecting structure of a compressor piston and a piston ring.

Background

In the industry of automobile air-conditioning compressors, a swash plate piston type compressor has advantages of market mastering by simple and reliable structure, stable operation, low noise, higher service life, mature processing technology and other conditions, and after the compressor piston and a piston ring are assembled, the compressor piston and the piston ring are slidably arranged in a cylinder body of the swash plate type compressor, and the piston ring are driven to linearly reciprocate in the cylinder body through the rotary motion of a swash plate of the compressor, so that the processes of sucking, compressing and discharging refrigerant gas are completed.

However, in the existing connection structure of the compressor piston and the piston ring, the friction force between the piston ring and the piston is insufficient after the piston ring is connected, and the relative sliding condition between the piston ring and the piston ring is easy to occur, so that the sliding or falling-off condition occurs after the piston and the piston ring are assembled, and the situation of piston clamping stagnation and unsmooth operation is caused.

Disclosure of Invention

The utility model mainly aims to provide a connecting structure capable of ensuring that a piston runs smoothly in a compressor cylinder body after a piston ring and the piston are assembled.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a connection structure of compressor piston and piston ring, includes main part and piston ring, the main part both ends are equipped with the piston head respectively, be equipped with stop device on the piston head, still be equipped with the mounting groove on the piston head, be equipped with a plurality of axial straight line recesses in the mounting groove, a plurality of equidistant setting of axial straight line recess is in the mounting groove, the inner periphery of piston ring is equipped with a plurality of axial straight line arch, a plurality of axial straight line arch is the equidistant setting of axial straight line arch is in on the inner peripheral surface of piston ring, the main part with the piston ring passes through axial straight line recess with the protruding cooperation of axial straight line is connected.

In a specific embodiment of the utility model, the groove is an inverted trapezoid groove, the protrusion is a trapezoid protrusion, and a gap is reserved between the bottom of the groove and the top of the protrusion when the groove is matched and connected with the protrusion.

In a specific embodiment of the present utility model, a first installation cavity is provided in the main body, and the first installation cavity is a cavity with an upper opening.

In a specific embodiment of the present utility model, a limiting surface is disposed in the first mounting cavity.

In a specific embodiment of the present utility model, ball slides are respectively disposed on inner walls of two sides of the first installation cavity.

In a particular embodiment of the utility model, a second mounting cavity is formed between the top of the first mounting cavity and the side of the piston head.

In a specific embodiment of the present utility model, the second mounting cavity is a cavity with an upper opening and a lower opening, and the first mounting cavity is communicated with the second mounting cavity.

One of the above technical solutions of the present utility model has at least one of the following advantages or beneficial effects:

according to the utility model, the piston ring mounting grooves and the limiting devices are arranged at the two ends of the piston, the grooves are internally provided with the grooves, the inner periphery of the piston ring is provided with the protrusions, and the piston ring are connected with the protrusions in a matched manner through the grooves, so that the friction force between the piston ring and the piston can be ensured, the situation that the piston ring and the piston cannot slide relatively is ensured, and the smooth running of the piston in the compressor cylinder body is ensured.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is an overall block diagram of a piston according to one embodiment of the present utility model;

FIG. 2 is a B-B directional cross-sectional view of one embodiment of the present utility model;

FIG. 3 is an assembled view of a piston and piston ring in accordance with one embodiment of the present utility model;

FIG. 4 is a cross-sectional view in the A-A direction of one embodiment of the present utility model;

fig. 5 is a diagram showing the internal structure of a piston ring according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the simplified description of the present utility model, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more features.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and for example, it may be a fixed connection or an active connection, or it may be a detachable connection or a non-detachable connection, or it may be an integral connection; may be mechanically connected, may be electrically connected, or may be in communication with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements, indirect communication or interaction relationship between the two elements.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.

Referring to fig. 1 to 5, in an embodiment of the present utility model, a connection structure of a compressor piston and a piston ring includes a main body 1 and a piston ring 2, wherein piston heads 3 are respectively disposed at both ends of the main body 1, a limiting device 7 is disposed on the piston heads 3, a mounting groove 4 is further disposed on the piston heads 3, a plurality of axial linear grooves 5 are disposed in the mounting groove 4 at equal intervals, a plurality of axial linear protrusions 6 are disposed at the inner circumference of the piston ring 2 at equal intervals, the main body 1 and the piston ring 2 are cooperatively connected with the axial linear protrusions 6 through the axial linear grooves 5, and a piston portion of a swash plate type compressor is operated in such a manner that the piston matched with the piston ring 2 is slidably disposed in a cylinder body of the swash plate type compressor, and the piston performs linear reciprocating motion inside the cylinder body through rotation of a swash plate, thereby sucking or compressing and discharging refrigerant gas.

In one embodiment of the utility model, the groove 5 is an inverted trapezoid groove, the protrusion 6 is a trapezoid protrusion, when the groove 5 is in fit connection with the protrusion 6, a gap is reserved between the bottom of the groove 5 and the top of the protrusion 6, the reason for the arrangement is that the protrusion 6 is arranged as a trapezoid protrusion, the groove 5 on the compressor piston is arranged as an inverted trapezoid groove, the connection and the fit of the two are convenient, and when the compressor piston moves linearly back and forth under the action of the rotation of a compressor swash plate, the temperature rise condition occurs due to friction at the fit position of the compressor piston main body 1 and the compressor piston ring 2, so that an installation gap is reserved between the top of the protrusion 6 and the bottom of the groove 5, namely, the expansion quantity influenced by the temperature rise is reserved, thereby the service life of the compressor piston can be prolonged.

In one embodiment of the utility model, the limiting device 7 comprises limiting surfaces positioned at two sides of the groove 5 and the bottom surface of the mounting groove 4, when the piston main body 1 performs axial linear reciprocating motion in the compressor cylinder under the action of the compressor main shaft and the compressor swash plate, the piston ring 2 not only can reduce the contact surface of the piston when in friction with the compressor cylinder, but also the limiting devices 7 are arranged at two sides of the groove 5, so that the piston main body 1 and the piston ring 2 can not perform relative displacement in the up-down direction and the left-right direction when in reciprocating motion, thereby avoiding damage to the compressor piston and further prolonging the service life of the compressor piston.

In one embodiment of the utility model, a first installation cavity 8 is arranged in the main body 1, the first installation cavity 8 is a cavity with an opening at the upper part, a limit surface 9 is arranged in the first installation cavity 8, the purpose of the arrangement is to ensure that one end of a compressor swash plate can be placed in a preset position in the piston main body 1, thereby ensuring that the compressor swash plate can drive a piston to perform axial reciprocating motion, ball slide ways 10 are respectively arranged on inner walls at two sides of the first installation cavity 8, namely, one side of the main body 1 close to the compressor swash plate is provided with the first installation cavity 8, ball slide ways 10 are respectively arranged at two sides of the piston main body 1 at the compressor swash plate, one end of the compressor swash plate can be placed in the first installation cavity 8, balls are respectively arranged between two sides of the compressor swash plate and the side wall of the first installation cavity 8, and are respectively connected with the ball slide ways 10 in a matching way.

Because the compressor piston is two-way piston, and piston main part 1 is located the compressor cylinder body, when the belt pulley drives the compressor main shaft and rotates, the compressor main shaft drives the compressor sloping cam plate and rotates, the compressor sloping cam plate then promotes piston main part 1 and do axial reciprocating motion, thereby accomplish the process of breathing in compression exhaust, wherein the ball that sets up in ball slide 10, the in-process that piston main part 1 and piston ring 2 do axial reciprocating motion has played the effect of transmission effort, namely the rotation motion of compressor sloping cam plate is converted into the straight line reciprocating motion of piston main part 1 through the ball, and the motion through the ball in ball slide 10 has played the effect that reduces the friction between compressor piston main part 1 and the compressor sloping cam plate, simultaneously ball slide 10 can also guarantee that the ball is gone on according to fixed orbit between compressor sloping cam plate and the piston main part 1, the ball slide 10 has played spacing effect to the slip of ball promptly.

In one embodiment of the present utility model, a second installation cavity 12 is formed between the upper side of the first installation cavity 8 and the side surface of the piston head 3, the second installation cavity 12 is a cavity with an opening at the upper side and the lower side, the first installation cavity 8 is communicated with the second installation cavity 12, the second installation cavity 12 is arranged to be in conformity with the shape of the compressor swash plate, because the thickness of the inner ring of the compressor swash plate close to the compressor main shaft is larger than the thickness of the compressor swash plate far away from the compressor main shaft, and in the process of installing the compressor swash plate and the compressor piston in a matching way, the part of the compressor swash plate close to the compressor main shaft needs to be placed into the compressor piston main body 1, so the second installation cavity 12 is arranged between the upper side of the first installation cavity 8 and the side surface of the piston head 3, and meanwhile, the limit effect can be achieved in the process of driving the compressor piston to do axial linear motion on the compressor swash plate, namely, the compressor swash plate is limited not to generate transverse relative displacement in the compressor piston.

In one embodiment of the present utility model, the material of the piston ring 2 is a synthetic polymer material, so that when the piston ring 2 is installed in the installation groove 4 preset on the piston main body 1, the inner circumference of the piston ring 2 can be enlarged first, so that the piston ring 2 can be smoothly pressed into the installation groove 4, after the installation is completed, the inner circumference of the piston ring 2 is gradually reduced due to the plasticity of the piston ring 2, and finally, the groove 5 arranged on the inner circumference of the piston ring 2 can be tightly matched with the protrusion 6 in the installation groove 4, thereby ensuring that the situation of slipping or falling off is stopped after the piston is assembled with the piston ring 2, and ensuring that the piston runs smoothly in the cylinder body of the compressor.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a connection structure of compressor piston and piston ring, includes main part (1) and piston ring (2), its characterized in that, main part (1) both ends are equipped with piston head (3) respectively, be equipped with stop device (7) on piston head (3), still be equipped with mounting groove (4) on piston head (3), be equipped with a plurality of axial sharp recess (5) in mounting groove (4), a plurality of equidistant setting of axial sharp recess (5) is in mounting groove (4), the inner periphery of piston ring (2) is equipped with a plurality of axial sharp arch (6), a plurality of axial sharp arch (6) are the equidistant setting of axial sharp arch (6) are in on the inner peripheral surface of piston ring (2), main part (1) with piston ring (2) are passed through axial sharp recess (5) with axial sharp arch (6) cooperation is connected.

2. The connection structure of a compressor piston and a piston ring according to claim 1, wherein: the groove (5) is an inverted trapezoid groove, the protrusion (6) is a trapezoid protrusion, and when the groove (5) is connected with the protrusion (6) in a matched mode, a gap is reserved between the bottom of the groove (5) and the top of the protrusion (6).

3. The connection structure of a compressor piston and a piston ring according to claim 1, wherein: a first installation cavity (8) is arranged in the main body (1), and the first installation cavity (8) is a cavity with an opening at the upper part.

4. A connection structure of a compressor piston and a piston ring according to claim 3, wherein: a limiting surface (9) is arranged in the first mounting cavity (8).

5. The connection structure of the compressor piston and the piston ring according to claim 4, wherein: the inner walls of the two sides of the first installation cavity (8) are respectively provided with a ball slideway (10).

6. The connection structure of the compressor piston and the piston ring according to claim 5, wherein: a second mounting cavity (12) is formed between the upper part of the first mounting cavity (8) and the side surface of the piston head (3).

7. The connection structure of the compressor piston and the piston ring according to claim 6, wherein: the second installation cavity (12) is a cavity with openings at the upper part and the lower part, and the first installation cavity (8) is communicated with the second installation cavity (12).

8. The connection structure of a compressor piston and a piston ring according to claim 1, wherein: the piston ring (2) is made of synthetic polymer materials.