Connecting block for an automotive air conditioning compressor

Abstract

The utility model relates to air conditioner compressor component technical field, concretely relates to the connecting block of automobile air conditioner compressor, including roller, collar seat and main shaft, the outside of roller is equipped with the connecting block, the outer side wall of connecting block is fixed with swash plate, the connecting block includes upper ring, lower ring and sets up the inner lining between both, both sides of upper ring and lower ring are perpendicularly provided with outer hole, both sides of both sides outer hole and the both sides of inner lining are provided with inner hole, the inner hole is provided with connecting bolt, and the bottom of connecting bolt is equipped with nut, this connecting block adopts the split type structure of upper ring, lower ring and inner lining combination, compared with traditional integral type connecting block, can respectively after processing each component again assembly, it is convenient to control the machining accuracy of each component, realizes the high accuracy cooperation with roller, swash plate. When the wear and tear or damage of connecting block certain component appears, need not integral replacement, only need to replace the damaged component, greatly reduces the maintenance cost, reduces the resource waste.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioning compressor components, specifically to a connecting block for an automotive air conditioning compressor. Background Technology

[0002] As the core power component of an automotive air conditioning system, the stability and efficiency of the internal transmission structure of the automotive air conditioning compressor directly determine the cooling performance and service life of the air conditioning system. The connecting block, as a key force-transmitting component connecting the rollers, swashplate, and main shaft inside the compressor, plays a crucial role in converting the rotational motion of the main shaft into the reciprocating motion of the swashplate, thereby driving the compressor piston. Its rational structural design is critical to the overall performance of the compressor.

[0003] Existing automotive air conditioning compressor connecting blocks mostly adopt an integral or simple split structure, which has revealed many shortcomings in actual use. On the one hand, integral connecting blocks are difficult to assemble with rollers and swashplates with high precision, and when the connecting block is partially worn or damaged, the entire block needs to be replaced, increasing maintenance costs and wasting resources. Although simple split connecting blocks solve some assembly problems, they are usually fixed by a single connection method, resulting in insufficient connection strength. Under the vibration and load generated by the high-frequency operation of the compressor, the connection is prone to loosening, affecting transmission stability and even causing compressor failure.

[0004] On the other hand, the bolt connection layout of some connecting blocks is unreasonable, resulting in uneven stress distribution. Under long-term load, localized bolt stress concentration and breakage are likely to occur, further affecting the reliability of the compressor. In addition, the existing connecting block liner design lacks specificity and is unable to effectively buffer and disperse the impact force during transmission, further reducing the fatigue resistance and service life of the connecting blocks. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a connecting block for automotive air conditioning compressors, which can effectively solve the problems in the existing technology.

[0006] This utility model provides a connecting block for an automotive air conditioning compressor, including a roller, a collar seat, and a main shaft. The connecting block is sleeved on the outer side of the roller, and a swashplate is fixed on the outer wall of the connecting block. The connecting block includes an upper ring, a lower ring, and an inner liner disposed between the two. Both sides of the upper ring and the lower ring have vertically opened outer holes, and both sides of the outer holes and the inner liner have opened inner holes. A connecting bolt is disposed in the inner hole, and a nut is sleeved on the bottom end of the connecting bolt.

[0007] Furthermore, multiple sets of roller grooves are formed on the outer side of the roller, and a protruding structure adapted to the size of the roller grooves is integrally fixed on the inner sidewall of the liner.

[0008] Furthermore, the inner lining also has two sets of semi-ring structures, and an outer flange structure is integrally provided on both sides of the inner lining, with the inner hole opened on the flange structure.

[0009] Furthermore, the collar seat is disposed on both sides of the roller, and the main shaft is fixed on the outside of the collar seat.

[0010] Furthermore, the outer holes and connecting bolts are arranged in multiple sets at equal intervals on the connecting block.

[0011] Furthermore, the size of the outer hole is larger than the inner diameter of the inner hole.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This connecting block adopts a split structure consisting of an upper ring, a lower ring, and an inner liner. Compared with traditional integral connecting blocks, each component can be processed separately before assembly, facilitating control over the processing accuracy of each component and achieving high-precision fit with rollers and swashplates. When a component of the connecting block is worn or damaged, it is not necessary to replace the entire block; only the damaged component needs to be replaced, significantly reducing maintenance costs and minimizing resource waste. Simultaneously, the inner liner adopts a two-set semi-ring structure, combined with the outer flange structures on both sides, further simplifying the assembly process, improving assembly efficiency, and facilitating subsequent disassembly and maintenance.

[0013] In this device, the upper and lower rings of the connecting block have vertically formed outer holes on both sides. Multiple sets of these outer holes and connecting bolts are equidistantly arranged on the connecting block. Corresponding inner holes are formed on the flange structures on both sides of the inner liner. Connecting bolts pass through the outer and inner holes sequentially and are then secured with nuts. This equidistant array of bolts ensures that the connecting force is evenly distributed throughout the connecting block, effectively avoiding the stress concentration problem caused by traditional single or few bolt connections, and significantly improving the overall connection strength of the connecting block. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a structural exploded view of the connecting block in this utility model.

[0016] The labels in the diagram represent: 1. Roller; 2. Swashplate; 3. Connecting block; 31. Upper ring; 311. Outer hole; 312. Inner hole; 32. Lower ring; 33. Inner liner; 34. Connecting bolt; 35. Nut; 4. Collar seat; 5. Main shaft. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example

[0020] The connection block for the automotive air conditioning compressor is shown in the attached document. Figure 1 - Appendix Figure 3 The assembly includes a roller 1, a collar seat 4, and a main shaft 5. A connecting block 3 is sleeved on the outer side of the roller 1. A swash plate 2 is fixed on the outer side wall of the connecting block 3. The connecting block 3 includes an upper ring 31, a lower ring 32, and an inner liner 33 disposed between the two. Both sides of the upper ring 31 and the lower ring 32 have vertically opened outer holes 311. Both sides of the outer holes 311 and the inner liner 33 have opened inner holes 312. A connecting bolt 34 is disposed in the inner hole 312, and a nut 35 is sleeved on the bottom end of the connecting bolt 34.

[0021] Multiple sets of grooves are formed on the outer side of the roller 1, and a raised structure adapted to the size of the grooves is integrally fixed on the inner sidewall of the liner 33. This raised structure forms a precise concave-convex fit with the grooves. This fit significantly improves the fit and positioning accuracy between the connecting block 3 and the roller 1, effectively limiting relative sliding between them. During transmission, the rotational force of the main shaft 5 can be transmitted to the swashplate 2 more efficiently, improving the transmission efficiency of the compressor. Simultaneously, the concave-convex fit structure ensures that the force is evenly distributed on the contact surfaces of the multiple grooves and the raised structure, reducing the load per unit area, decreasing wear on the mating surfaces, and significantly extending the service life of the connecting block 3 and the roller 1.

[0022] In this device, the inner liner 33 can be made of A390-5 high-silicon aluminum alloy as the raw material for the connecting block, with a silicon content of 15%. The connecting block is designed with cold forging technology and uses "U-shaped" profiles for the raw material to reduce the flow of metal during forging. Phosphate saponification treatment is used to ensure that the surface of the connecting block blank is well lubricated, dry, and full without any missing parts before forging, which effectively protects the mold, realizes the smooth forming of the parts, and ensures that the connecting block is formed in one forging.

[0023] The inner liner 33 also has a two-set semi-ring structure, and an outer flange structure is integrally provided on both sides of the inner liner 33, with the inner hole 312 opened on the flange structure. This connecting block 3 adopts a split structure combining the upper ring 31, the lower ring 32, and the inner liner 33. Compared with the traditional integral connecting block 3, each component can be processed separately and then assembled, which facilitates the control of the processing accuracy of each component and achieves high-precision matching with the roller 1 and the swashplate 2. When a component of the connecting block 3 is worn or damaged, it is not necessary to replace the whole block; only the damaged component needs to be replaced, which greatly reduces maintenance costs and resource waste. At the same time, the inner liner 33 adopts a two-set semi-ring structure, combined with the outer flange structure on both sides, which further simplifies the assembly process, improves assembly efficiency, and facilitates subsequent disassembly and maintenance.

[0024] The collar seat 4 is set on both sides of the roller 1, and the main shaft 5 is fixed on the outside of the collar seat 4. The collar seat 4 is set on both sides of the roller 1, and the main shaft 5 is fixed on the outside of the collar seat 4, forming a complete transmission structure with the connecting block 3 and the roller 1, making the force of the entire transmission system more reasonable and effectively dispersing the impact force generated during the operation of the compressor.

[0025] Combining the aforementioned split structure, multiple bolt connections, and precise convex-concave fit design, this connecting block 3 possesses higher structural strength, transmission efficiency, and fatigue resistance, which can effectively reduce the failure rate of the compressor during use, significantly extend the overall service life of the compressor, and provide a reliable guarantee for the stable operation of the automotive air conditioning system.

[0026] Multiple sets of outer holes 311 and connecting bolts 34 are equidistantly arranged on the connecting block 3. The size of the outer hole 311 is larger than the inner diameter of the inner hole 312. The upper ring 31 and lower ring 32 of the connecting block 3 have vertically arranged outer holes 311 on both sides, and multiple sets of outer holes 311 and connecting bolts 34 are equidistantly arranged on the connecting block 3. Simultaneously, corresponding inner holes 312 are opened on the flange structures on both sides of the inner liner 33. Connecting bolts 34 pass through the outer holes 311 and inner holes 312 in sequence and are then fixed with nuts 35. This equidistant array of bolts ensures that the connection force is evenly distributed throughout the connecting block 3, effectively avoiding the stress concentration problem caused by traditional single or few bolt connections, and significantly improving the overall connection strength of the connecting block 3. Under the vibration and load generated by the high-frequency operation of the compressor, it can effectively prevent loosening of the connection, ensure transmission stability, and reduce the compressor failure rate.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A connecting block for an automotive air conditioning compressor, comprising a roller (1), a collar seat (4), and a main shaft (5), characterized in that, A connecting block (3) is sleeved on the outer side of the roller (1). A swash plate (2) is fixed on the outer wall of the connecting block (3). The connecting block (3) includes an upper ring (31), a lower ring (32), and an inner liner (33) between them. Both sides of the upper ring (31) and the lower ring (32) are vertically provided with outer holes (311). Both sides of the outer holes (311) and the inner liner (33) are provided with inner holes (312). A connecting bolt (34) is provided in the inner hole (312), and a nut (35) is sleeved on the bottom end of the connecting bolt (34).

2. The connecting block for the automotive air conditioning compressor according to claim 1, characterized in that, The outer side of the roller (1) has multiple sets of roller grooves, and the inner sidewall of the liner (33) is integrally fixed with a protrusion structure that matches the size of the roller grooves.

3. The connecting block for the automotive air conditioning compressor according to claim 1, characterized in that, The inner lining (33) is also a two-ring structure, and an outer flange structure is integrally provided on both sides of the inner lining (33), and the inner hole (312) is opened on the flange structure.

4. The connecting block for the automotive air conditioning compressor according to claim 1, characterized in that, The collar seat (4) is arranged on both sides of the roller (1), and the main shaft (5) is fixed on the outside of the collar seat (4).

5. The connecting block for the automotive air conditioning compressor according to claim 4, characterized in that, The outer hole (311) and connecting bolt (34) are arranged in multiple sets at equal intervals on the connecting block (3).

6. The connecting block for the automotive air conditioning compressor according to claim 1, characterized in that, The outer hole (311) has a larger diameter than the inner hole (312).

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