Piston pin of refrigeration type compressor

Abstract

The utility model discloses a refrigeration compressor's piston pin relates to piston pin technical field, including piston pin main part, the interior of piston pin main part is provided with a first cavity, the interior of first cavity is rotatingly provided with a plurality of internal thread pipe, one end of a plurality of internal thread pipe all extends to the outside of first cavity, and the other end of said internal thread pipe extends to the outside of first cavity. Threaded rods are arranged in the inner threaded pipes in a threaded and sleeved mode, an arc-shaped plate is fixedly connected to one end of the outer side of each threaded rod, a rotating rod is rotationally arranged in the middle of the first cavity, a transmission mechanism for driving the multiple inner threaded pipes to rotate is arranged at one end of each rotating rod, and a groove is formed in one end of the piston pin body; and a limiting mechanism for limiting the rotation of the rotating rod is arranged in the groove. The diameter of the piston pin can be adjusted, and the piston pin can be conveniently installed on different compressors.

Description

Technical Field

[0001] The utility model relates to the technical field of piston pins, in particular to a piston pin of a refrigeration compressor. Background Art

[0002] The compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. It sucks low-temperature and low-pressure refrigerant gas from the intake pipe, compresses it by driving the piston through the motor, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle. The piston pin of a refrigeration compressor is usually set with a fixed diameter, so it can only be installed with a matching compressor, and its applicability is poor. Utility Model Content

[0003] In view of the problems existing in the piston pin of the above-mentioned existing refrigeration compressor, the present utility model is proposed.

[0004] Therefore, the utility model aims to provide a piston pin for a refrigeration compressor, which solves the problem that the piston pin of the refrigeration compressor in the prior art is usually set with a fixed diameter, and can therefore only be installed with a matching compressor, resulting in poor applicability.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A piston pin of a refrigeration compressor comprises a piston pin body, a first cavity is formed inside the piston pin body, a plurality of internally threaded tubes are rotatably arranged inside the first cavity, one end of each of the plurality of internally threaded tubes extends to the outside of the first cavity, a threaded rod is provided on the internal thread sleeve of the internally threaded tube, an arc-shaped plate is fixedly connected to one end of the outer side of the threaded rod, a rotating rod is rotatably arranged in the middle of the first cavity, a transmission mechanism for driving the plurality of internally threaded tubes to rotate is provided at one end of the rotating rod, a groove is formed at one end of the piston pin body, a limiting mechanism for limiting the rotation of the rotating rod is provided inside the groove.

[0007] Preferably, the transmission mechanism includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly sleeved on the rod wall of the rotating rod, and the plurality of second bevel gears are respectively fixedly sleeved on the outer wall of the inner end of the corresponding internal threaded tube, and the first bevel gear is meshingly connected with the plurality of second bevel gears.

[0008] Preferably, the limiting mechanism includes a limiting rod and a limiting tube, and a plurality of the limiting tubes are distributed in a circular array on the inner side of the groove with the rotating rod as the axis, and one end of the plurality of limiting tubes is fixedly connected to the inner wall of the groove, and one end of the rotating rod located in the groove is fixedly sleeved with a rotating plate, and a second cavity is opened at both ends of the rotating plate, and a stopper is slidably arranged inside the second cavity, and the limiting rod is fixedly arranged on one side of the stopper, and one end of the limiting rod extends to the outside of the second cavity and is plugged into the corresponding limiting tube.

[0009] Preferably, a spring is fixedly provided on a side of the stopper away from the limiting rod, and the other end of the spring is fixedly connected to the inner wall of the second cavity.

[0010] Preferably, sliding rods are provided on both sides of the internally threaded tube, one end of the sliding rod extends to the outside of the first cavity, and the outer end of the sliding rod is fixedly connected to the corresponding arc-shaped plate.

[0011] Preferably, the cross-sections of the stopper and the second cavity are both rectangular.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. The utility model drives the first bevel gear to rotate by rotating the rotating rod, that is, the multiple second bevel gears are rotated, and then the multiple internal threaded tubes are driven to rotate. The internal threaded tube drives the threaded rod that cannot rotate to move, that is, it can drive the arc plate to move relative to the piston pin body, that is, the installation diameter of the piston pin can be adjusted, which is convenient for installation with different compressors.

[0014] 2. The utility model, in a natural state, allows the elastic force of the spring to push the stopper to move, so that the limit rod is inserted into the corresponding limit tube, thereby limiting the rotation rod and ensuring the stability of multiple arc plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a structural schematic diagram of a piston pin of a refrigeration compressor proposed by the utility model;

[0017] Figure 2 for Figure 1 A rear view structural diagram of ;

[0018] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0019] Description of reference numerals:

[0020] 1. Piston pin body; 2. Internal threaded tube; 3. Threaded rod; 4. Arc plate; 5. Sliding rod; 6. Rotating rod; 7. First bevel gear; 8. Spring; 9. Second bevel gear; 10. Rotating plate; 11. Stopper; 12. Limit rod; 13. Limit tube. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] The utility model embodiment discloses a piston pin of a refrigeration compressor.

[0023] Reference Figure 1-3 A piston pin of a refrigeration compressor comprises a piston pin body 1, a first cavity is opened inside the piston pin body 1, a plurality of internal threaded tubes 2 are rotatably arranged inside the first cavity, one end of each of the plurality of internal threaded tubes 2 extends to the outside of the first cavity, a threaded rod 3 is provided on the internal thread sleeve of the internal threaded tube 2, an arc-shaped plate 4 is fixedly connected to one end of the outer side of the threaded rod 3, a rotating rod 6 is rotatably arranged in the middle of the first cavity, a groove is opened at one end of the piston pin body 1, sliding rods 5 are arranged on both sides of the internal threaded tube 2, one end of the sliding rod 5 extends to the outside of the first cavity, and one end of the outer side of the sliding rod 5 is fixedly connected to the corresponding arc-shaped plate 4, so that the arc-shaped plate 4 cannot rotate, that is, it can slide stably.

[0024] Reference Figure 1-3 A transmission mechanism for driving the rotation of the multiple internal threaded tubes 2 is provided at one end of the rotating rod 6, and the transmission mechanism includes a first bevel gear 7 and a second bevel gear 9. The first bevel gear 7 is fixedly sleeved on the rod wall of the rotating rod 6, and the multiple second bevel gears 9 are respectively fixedly sleeved on the outer wall of the inner end of the corresponding internal threaded tube 2. The first bevel gear 7 is meshedly connected with the multiple second bevel gears 9.

[0025] Reference Figure 1-3A limiting mechanism for limiting the rotation of the rotating rod 6 is provided inside the groove, and the limiting mechanism includes a limiting rod 12 and a limiting tube 13. A plurality of limiting tubes 13 are distributed on the inner side of the groove in a ring array with the rotating rod 6 as the axis, and one end of the plurality of limiting tubes 13 is fixedly connected to the inner wall of the groove. One end of the rotating rod 6 located in the groove is fixedly sleeved with a rotating plate 10, and a second cavity is provided at both ends of the rotating plate 10. A stopper 11 is slidably provided inside the second cavity, and the limiting rod 12 is fixedly provided on one side of the stopper 11. One end of the limiting rod 12 extends to the outside of the second cavity and is plugged into the corresponding limiting tube 13. A spring 8 is fixedly provided on the side of the stopper 11 away from the limiting rod 12, and the other end of the spring 8 is fixedly connected to the inner wall of the second cavity to facilitate the resetting of the stopper 11. The cross-sections of the stopper 11 and the second cavity are both rectangular, so that the stopper 11 cannot rotate, that is, it can slide stably.

[0026] In the utility model, when in use, the rotating rod 6 is rotated, so that the rotating rod 6 drives the first bevel gear 7 to rotate, that is, the multiple second bevel gears 9 are rotated, and then the multiple internal threaded tubes 2 are driven to rotate. The internal threaded tube 2 drives the threaded rod 3 that cannot rotate to move, that is, it can drive the arc plate 4 to move relative to the piston pin body 1, that is, the installation diameter of the piston pin can be adjusted, which is convenient for installation with different compressors, and then the rotating plate 10 is loosened. In a natural state, the elastic force of the spring 8 pushes the stopper 11 to move, that is, the limiting rod 12 is inserted into the corresponding limiting tube 13, that is, the rotating rod 6 can be limited, and then the stability of the multiple arc plates 4 can be ensured.

[0027] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A piston pin for a refrigeration compressor, comprising a piston pin body (1), characterized in that: A first cavity is provided inside the piston pin body (1), a plurality of internally threaded tubes (2) are rotatably arranged inside the first cavity, one end of each of the plurality of internally threaded tubes (2) extends to the outside of the first cavity, a threaded rod (3) is provided on the internal thread sleeve of the internally threaded tube (2), an arc-shaped plate (4) is fixedly connected to one end of the outer side of the threaded rod (3), a rotating rod (6) is rotatably arranged in the middle of the first cavity, one end of the rotating rod (6) is provided with a transmission mechanism for driving the plurality of internally threaded tubes (2) to rotate, a groove is provided at one end of the piston pin body (1), a limiting mechanism for limiting the rotation of the rotating rod (6) is provided inside the groove.

2. The piston pin of a refrigeration compressor according to claim 1, characterized in that: The transmission mechanism comprises a first bevel gear (7) and a second bevel gear (9); the first bevel gear (7) is fixedly sleeved on the rod wall of the rotating rod (6); a plurality of the second bevel gears (9) are respectively fixedly sleeved on the outer wall of one end of the inner side of the corresponding internal threaded tube (2); the first bevel gear (7) is meshingly connected with the plurality of the second bevel gears (9).

3. The piston pin of a refrigeration compressor according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (12) and a limiting tube (13); a plurality of the limiting tubes (13) are arranged on the inner side of the groove in a circular array with the rotating rod (6) as the axis; one end of the plurality of limiting tubes (13) is fixedly connected to the inner wall of the groove; one end of the rotating rod (6) located in the groove is fixedly sleeved with a rotating plate (10); a second cavity is provided at both ends of the rotating plate (10); a stopper (11) is slidably provided inside the second cavity; the limiting rod (12) is fixedly provided on one side of the stopper (11); one end of the limiting rod (12) extends to the outer side of the second cavity and is plugged into the corresponding limiting tube (13).

4. The piston pin of a refrigeration compressor according to claim 3, characterized in that: A spring (8) is fixedly arranged on one side of the stopper (11) away from the limiting rod (12), and the other end of the spring (8) is fixedly connected to the inner wall of the second cavity.

5. The piston pin of a refrigeration compressor according to claim 1, characterized in that: Sliding rods (5) are provided on both sides of the internally threaded tube (2), one end of the sliding rod (5) extends to the outside of the first cavity, and the outer end of the sliding rod (5) is fixedly connected to the corresponding arc-shaped plate (4).

6. The piston pin of a refrigeration compressor according to claim 3, characterized in that: The cross sections of the stopper (11) and the second cavity are both rectangular.

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