Piston pin for a compressor

Abstract

The utility model discloses a piston pin for compressor belongs to compressor technical field, a piston pin for compressor, including outer pin body and with the sliding connection of inner pin body, all be provided with the locating pin hole one and the locating pin hole two for being connected with the compressor on outer pin body and inner pin body, the limiting mechanism is arranged between outer pin body and inner pin body, and the limiting mechanism includes the assembly groove of setting on the outer pin body near the inner pin body one end and the left and right sides limiting slot of a pair of symmetry distribution in assembly groove, and the outer end fixed connection of inner pin body has assembly ring, and assembly ring is connected with the sliding of assembly groove, the utility model discloses a limiting mechanism is arranged, has guaranteed that inner pin body and outer pin body are connected stably in axial direction, even in the process of carrying or transportation and meet the vibration or external force effect, can effectively prevent the back and forth sliding of inner pin body to greatly reduce the friction damage to the inner wall of outer pin body, prolongs the service life of piston pin and whole compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and more specifically, to a piston pin for a compressor. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant gas through the suction pipe, compresses it by driving a piston through the motor, and then discharges high-temperature, high-pressure refrigerant gas through the discharge pipe, providing power for the refrigeration cycle. The piston pin is a key component in the compressor. It is responsible for connecting the piston and the connecting rod, transmitting the gas force on the piston to the connecting rod, or causing the small end of the connecting rod to drive the piston to move together.

[0003] A search revealed that CN219317137U discloses a compressor piston pin, which solves the problem that conventional compressors can only install the piston pin body on one compressor. When it is necessary to install the piston pin on different compressors, the piston pin diameter is fixed, making it inconvenient to install the piston pin according to the diameter of the piston skirt on the compressor.

[0004] However, through exploration, the inventors discovered that the technical solution still has the following defects: Since the inner pin is slidably connected to the inner wall of the outer pin, this connection method means that the two do not actually have a limiting function in the axial direction. When the workers carry this type of piston pin for field operations, the inner pin is easy to slide back and forth along its axial direction in the outer pin. During this process, the inner wall of the outer pin will be subjected to high-frequency friction, which will reduce the smoothness of the inner wall of the outer pin, thereby affecting the flow effect of the lubricating oil, and ultimately affecting the performance of the compressor using the outer pin. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a piston pin for a compressor. It can ensure a stable axial connection between the inner and outer pins by setting a limiting mechanism. Even if the inner pin is subjected to vibration or external force during carrying or transportation, it can effectively prevent the inner pin from sliding back and forth, thereby greatly reducing frictional damage to the inner wall of the outer pin and extending the service life of the piston pin and the entire compressor.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A piston pin for a compressor includes an outer pin body and an inner pin body slidably connected thereto. Both the outer and inner pin bodies are provided with a first positioning pin hole and a second positioning pin hole for connection with the compressor. A limiting mechanism is provided between the outer and inner pin bodies. The limiting mechanism includes an assembly groove on the outer pin body near one end of the inner pin body, and a pair of limiting grooves symmetrically distributed on the left and right sides of the assembly groove. An assembly ring is fixedly connected to the outer end of the inner pin body, and the assembly ring is slidably connected to the assembly groove. Sliding grooves are provided at both ends of the assembly ring, and limiting sliders are slidably connected within the sliding grooves. Springs are fixedly connected between the limiting sliders and the inner bottom end of the sliding grooves. The limiting sliders and the limiting grooves are movably engaged. An adjustment mechanism is also provided at the outer end of the inner pin body. The adjustment mechanism includes a groove on the outer wall of the inner pin body, located in front of the assembly ring. A rotating shaft is fixedly connected within the groove, and an adjusting block is rotatably connected to the outer end of the rotating shaft. A lever is fixedly connected to the side wall of the adjusting block.

[0010] Furthermore, the limiting groove is a concave hemispherical groove, and the shape of the end of the limiting slider away from the spring matches it.

[0011] Furthermore, the cross-sectional shape of the groove is convex, and a limiting block is fixedly connected to the end of the limiting slider near the spring.

[0012] Furthermore, micro-magnetic stickers are fixedly connected to the end of the adjustment block away from the rotating shaft and to the side wall of the groove.

[0013] Furthermore, both the adjusting block and the lever are disposed inside the groove, and the outer end of the lever is fixedly connected with a rubber layer that matches its shape.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) This solution ensures that the inner pin and the outer pin are stably connected in the axial direction by setting a limiting mechanism. Even if vibration or external force is encountered during carrying or transportation, it can effectively prevent the inner pin from sliding back and forth, thereby greatly reducing the frictional damage to the inner wall of the outer pin and extending the service life of the piston pin and the entire compressor.

[0017] (2) Although this solution adds an axial limiting design, it still maintains the characteristic of easy disassembly and assembly between the inner and outer pins, enabling workers to quickly operate when replacing or repairing piston pins, thus ensuring high work efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a side sectional view of the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This utility model Figure 2 Enlarged view at point B in the middle;

[0022] Figure 5 This utility model Figure 2 Enlarged view of point C.

[0023] Explanation of the labels in the diagram:

[0024] 1. Outer pin body; 101. Assembly groove; 102. Limiting groove; 103. Positioning pin hole one; 2. Inner pin body; 201. Groove; 202. Positioning pin hole two; 3. Assembly ring; 301. Slide groove; 4. Limiting slider; 401. Limiting block; 5. Spring; 7. Rotating shaft; 8. Adjusting block; 9. Pulley; 10. Micro magnetic sticker. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1:

[0029] Please see Figure 1-5 A piston pin for a compressor includes an outer pin body 1 and an inner pin body 2 slidably connected thereto. Both the outer pin body 1 and the inner pin body 2 are provided with a positioning pin hole 103 and a positioning pin hole 202 for connecting with the compressor. A limit mechanism is provided between the outer pin body 1 and the inner pin body 2.

[0030] The limiting mechanism includes an assembly groove 101 formed on the outer pin 1 near one end of the inner pin 2, and a pair of limiting grooves 102 symmetrically distributed on the left and right sides of the assembly groove 101. An assembly ring 3 is fixedly connected to the outer end of the inner pin 2, and the assembly ring 3 is slidably connected to the assembly groove 101. A sliding groove 301 is formed on both the left and right ends of the assembly ring 3, and a limiting slider 4 is slidably connected in the sliding groove 301. A spring 5 is fixedly connected between the limiting slider 4 and the inner bottom end of the sliding groove 301. The cross-sectional shape of the sliding groove 301 is convex. A limiting block 401 is fixedly connected to the end of the limiting slider 4 near the spring 5. The movement stroke of the limiting slider 4 can be limited by the matching shape of the limiting block 401 and the sliding groove 301. The limiting groove 102 is a concave hemispherical groove, and the shape of the end of the limiting slider 4 away from the spring 5 matches it. The limiting slider 4 and the limiting groove 102 are in a movable snap-fit ​​connection. This shape ensures that during the installation of the inner pin 2 and the outer pin 1, when the assembly ring 3 enters the assembly groove 101, the limiting slider 4 can be squeezed back to a position flush with the opening of the slide groove 301 by the inner wall of the assembly groove 101. When the inner pin 2 is rotated to align the limiting slider 4 with the limiting groove 102, the limiting slider 4 will be directly inserted into the limiting groove 102 by the elasticity provided by the spring 5, providing axial limiting between the inner pin 2 and the outer pin 1. Generally speaking, the hemispherical shape of the connection between the limiting slider 4 and the limiting groove 102 is convenient for connection and separation. However, since the inner and outer walls of the outer pin 1 and the inner pin 2 are both smooth, the friction between them and the palm is too small. This may make it difficult for the operator to separate the two when only the outer pin 1 or the inner pin 2 is needed during actual operation. Therefore, an adjustment mechanism is also provided at the outer end of the inner pin 2.

[0031] The adjustment mechanism includes a groove 201 formed on the outer wall of the inner pin 2, located in front of the assembly ring 3. A rotating shaft 7 is fixedly connected inside the groove 201, and an adjusting block 8 is rotatably connected to the outer end of the rotating shaft 7. A lever 9 is fixedly connected to the side wall of the adjusting block 8. Both the adjusting block 8 and the lever 9 are located inside the groove 201. Micro-magnetic stickers 10 are fixedly connected to the end of the adjusting block 8 away from the rotating shaft 7 and to the side wall of the groove 201. The magnetic force provided by the pair of micro-magnetic stickers 10 ensures that the adjusting block 8 and the lever 9 remain within the groove 201 without external interference. This makes the assembled outer pin 1 and inner pin 2 more suitable for use when working outside or storing, and prevents damage to the lever 9. Figure 4 As shown, a rubber layer matching its shape is fixedly connected to the outer end of the lever 9 to increase the friction between the lever 9 and the operator's fingers. When it is necessary to separate the inner pin 2 and the outer pin 1, moving the lever 9 can drive the adjusting block 8 to rotate along the rotating shaft 7. When the lever 9 is rotated into position, the lever 9 will abut against the side wall of the groove 201. At this time, the pair of levers 9 are in a parallel state. Figure 5 As shown, the inner pin 2 can then be removed from the outer pin 1 by using the lever 9.

[0032] Compared with existing technologies, this solution ensures a stable axial connection between the inner pin 2 and the outer pin 1 by setting a limiting mechanism. Even if vibration or external force is encountered during carrying or transportation, it can effectively prevent the inner pin from sliding back and forth, thereby greatly reducing frictional damage to the inner wall of the outer pin and extending the service life of the piston pin and the entire compressor. Secondly, although this solution adds an axial limiting design, it still maintains the characteristic of easy disassembly and assembly between the inner pin 2 and the outer pin 1, enabling staff to operate quickly when replacing or repairing the piston pin, ensuring high work efficiency.

[0033] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A piston pin for a compressor, comprising an outer pin body (1) and an inner pin body (2) slidably connected thereto, wherein both the outer pin body (1) and the inner pin body (2) are provided with a first positioning pin hole (103) and a second positioning pin hole (202) for connection with the compressor, characterized in that: A limiting mechanism is provided between the outer pin (1) and the inner pin (2); The limiting mechanism includes an assembly groove (101) on the outer pin (1) near the inner pin (2) and a pair of limiting grooves (102) symmetrically distributed on the left and right sides of the assembly groove (101). An assembly ring (3) is fixedly connected to the outer end of the inner pin (2). The assembly ring (3) is slidably connected to the assembly groove (101). Sliding grooves (301) are provided at both the left and right ends of the assembly ring (3). A limiting slider (4) is slidably connected in the sliding groove (301). A spring (5) is fixedly connected between the limiting slider (4) and the inner bottom end of the sliding groove (301). The limiting slider (4) and the limiting groove (102) are movably engaged. An adjustment mechanism is also provided at the outer end of the inner pin (2). The adjustment mechanism includes a groove (201) formed on the outer wall of the inner pin (2), and the groove (201) is located on the front side of the assembly ring (3). A rotating shaft (7) is fixedly connected in the groove (201), and an adjustment block (8) is rotatably connected to the outer end of the rotating shaft (7). A lever block (9) is fixedly connected to the side wall of the adjustment block (8).

2. A piston pin for a compressor according to claim 1, characterized in that: The limiting groove (102) is a concave hemispherical groove, and the shape of the end of the limiting slider (4) away from the spring (5) matches that of the limiting slider (4).

3. A piston pin for a compressor according to claim 1, characterized in that: The cross-sectional shape of the slide (301) is "convex", and the limiting slider (4) is fixedly connected to the limiting block (401) at the end near the spring (5).

4. A piston pin for a compressor according to claim 1, characterized in that: Micro magnetic stickers (10) are fixedly connected to the end of the adjusting block (8) away from the rotating shaft (7) and the side wall of the groove (201).

5. A piston pin for a compressor according to claim 1, characterized in that: Both the adjusting block (8) and the lever block (9) are located inside the groove (201), and the outer end of the lever block (9) is fixedly connected with a rubber layer that matches its shape.

Images