Crankshaft structure of automobile air conditioner compressor

Abstract

The utility model discloses a crankshaft structure of an automobile air conditioner compressor, which comprises an auxiliary shaft part, a first eccentric wheel, a shaft shoulder part, a second eccentric wheel, a main shaft part, an end shaft part and an oil pumping hole arranged in the auxiliary shaft part, the first eccentric wheel, the shaft shoulder part, the second eccentric wheel, the main shaft part and the end shaft part which are integrally formed, the first oil groove and the second oil groove are inclined spiral oil grooves and are communicated with the oil pumping hole through a first eccentric wheel oil hole and a second eccentric wheel oil hole respectively; through the optimized and improved design of the product and the adoption of the crankshaft with the spiral groove design, the lubricating effect is obviously improved, not only is the circulation efficiency of oil improved, but also the waste of oil is reduced, in addition, the generation of friction heat is reduced, the improvement of the overall performance of the compressor is facilitated, and the service life of the compressor is prolonged. And a good working state can still be kept during high-load operation, so that the beneficial effect of ensuring the stability and the reliability of equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor crankshafts, in particular to a crankshaft structure of an automobile air-conditioning compressor. Background Art

[0002] Automobile air-conditioning compressors are horizontal rotor compressors, which are widely used in refrigeration, air-conditioning and other fields. Their performance and efficiency directly affect the operation of the entire system.

[0003] However, the oil groove of the existing crankshaft eccentric wheel adopts a vertical groove design. Although it can achieve oil injection and circulation to a certain extent, there are still problems such as poor oil flow, low circulation efficiency and insufficient oil lubrication, which leads to performance degradation and even damage of the compressor under high load or long-term operation. Utility Model Content

[0004] In view of the above technical problems in the related art, the present invention proposes a crankshaft structure for an automobile air-conditioning compressor, which can overcome the above deficiencies in the prior art.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0006] An automobile air-conditioning compressor crankshaft structure;

[0007] The crankshaft structure of the automobile air-conditioning compressor includes an integrally formed secondary shaft portion, a first eccentric wheel, a shoulder portion, a second eccentric wheel, a main shaft portion and an end shaft portion. The secondary shaft portion, the first eccentric wheel, the shoulder portion, the second eccentric wheel, the main shaft portion and the end shaft portion, which are arranged in sequence, are coaxially penetrated by an oil pump hole. The outer side walls of the first eccentric wheel and the second eccentric wheel are respectively provided with a first oil groove and a second oil groove. The first oil groove and the second oil groove are obliquely arranged spiral oil grooves. The first oil groove and the second oil groove are connected to the oil pump hole through the first eccentric wheel oil hole and the second eccentric wheel oil hole, respectively.

[0008] Furthermore, a shoulder oil hole is provided through the shoulder portion, the shoulder oil hole passes through the oil pump hole, and the angle between the shoulder oil hole and the oil pump hole is 90 degrees.

[0009] Furthermore, the included angle between the first oil groove and the second oil groove is 45 degrees, and the inclination direction of the first oil groove and the second oil groove is consistent with the rotation direction of the crankshaft structure of the automobile air-conditioning compressor.

[0010] Furthermore, a side oil hole communicating with the oil pump hole is provided on a single side wall of the main shaft portion adjacent to one end of the second eccentric wheel.

[0011] Furthermore, the angle between the side oil hole and the shoulder oil hole is 90 degrees, the angle between the side oil hole and the second eccentric oil hole is 45 degrees, and the angle between the side oil hole and the first eccentric oil hole is 135 degrees.

[0012] Furthermore, an oblique cutting groove is provided at the end of the end shaft portion.

[0013] The beneficial effects of the present invention are as follows: through the optimized and improved design of the product of the present invention, a crankshaft with a spiral groove design is adopted, which significantly improves the lubrication effect, not only improves the oil circulation efficiency, but also reduces oil waste. In addition, the design reduces the generation of frictional heat, helps to improve the overall performance of the compressor, and enables it to maintain a good working condition during high-load operation, thereby achieving the beneficial effect of ensuring the stability and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a perspective view of the overall structure of an automobile air-conditioning compressor crankshaft structure according to an embodiment of the present utility model;

[0016] Figure 2 The invention is based on an automobile air-conditioning compressor crankshaft structure. Figure 1 A partial enlarged view of point A in the middle;

[0017] Figure 3 The invention is based on an automobile air-conditioning compressor crankshaft structure. Figure 1 Partial detail diagram at B in the middle;

[0018] Figure 4 This is a partial perspective structural diagram of a crankshaft structure of an automobile air-conditioning compressor according to an embodiment of the present utility model;

[0019] Figure 5 This is a first perspective perspective view of a conventional crankshaft according to an embodiment of the present invention;

[0020] Figure 6 is a second perspective perspective view of a conventional crankshaft according to an embodiment of the present invention;

[0021] In the figure: 1. auxiliary shaft; 2. first eccentric; 3. shoulder; 4. second eccentric; 5. main shaft; 6. end shaft; 7. pump oil hole; 8. first eccentric oil hole; 9. first oil groove; 10. shoulder oil hole; 11. second eccentric oil hole; 12. second oil groove; 13. side oil hole; 14. bevel groove. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0023] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0024] like Figure 1-4 As shown, according to an embodiment of the present utility model, an automobile air-conditioning compressor crankshaft structure includes an integrally formed secondary shaft portion 1, a first eccentric wheel 2, a shoulder portion 3, a second eccentric wheel 4, a main shaft portion 5 and an end shaft portion 6. The secondary shaft portion 1, the first eccentric wheel 2, the shoulder portion 3, the second eccentric wheel 4, the main shaft portion 5 and the end shaft portion 6 are arranged in sequence, and an oil pump hole 7 is coaxially penetrated inside. The outer side walls of the first eccentric wheel 2 and the second eccentric wheel 4 are respectively provided with a first oil groove 9 and a second oil groove 12. The first oil groove 9 and the second oil groove 12 are obliquely arranged spiral oil grooves. The first oil groove 9 and the second oil groove 12 are connected to the oil pump hole 7 through the first eccentric wheel oil hole 8 and the second eccentric wheel oil hole 11 respectively.

[0025] According to an automobile air-conditioning compressor crankshaft structure described in an embodiment of the present invention, in a specific embodiment, a shoulder oil hole 10 is provided through the shoulder portion 3, the shoulder oil hole 10 passes through the oil pump hole 7, and the angle between the shoulder oil hole 10 and the oil pump hole 7 is 90 degrees.

[0026] According to an embodiment of the present invention, an automobile air-conditioning compressor crankshaft structure is described. In a specific embodiment, the angle between the first oil groove 9 and the second oil groove 12 is 45 degrees, and the inclination direction of the first oil groove 9 and the second oil groove 12 is consistent with the rotation direction of the automobile air-conditioning compressor crankshaft structure.

[0027] According to an automobile air-conditioning compressor crankshaft structure described in an embodiment of the present invention, in a specific embodiment, a side oil hole 13 communicating with the oil pump hole 7 is provided on a single side wall of the main shaft portion 5 adjacent to one end of the second eccentric wheel 4 .

[0028] According to an automobile air-conditioning compressor crankshaft structure described in an embodiment of the present utility model, in a specific embodiment, the angle between the side oil hole 13 and the shoulder oil hole 10 is 90 degrees, the angle between the side oil hole 13 and the second eccentric oil hole 11 is 45 degrees, and the angle between the side oil hole 13 and the first eccentric oil hole 8 is 135 degrees.

[0029] According to an embodiment of the present invention, an automobile air-conditioning compressor crankshaft structure, in a specific embodiment, an end portion of the end shaft portion 6 is provided with a beveled groove 14 .

[0030] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0031] In practice, the crankshaft structure for an automotive air-conditioning compressor according to the present invention replaces conventional vertical grooves with spiral grooves in the first oil groove 9 on the first eccentric 2 and the second oil groove 12 on the second eccentric 4. Specifically, the spiral groove design of the first oil groove 9 and the second oil groove 12 not only improves oil circulation efficiency but also enhances the lubrication effect of the oil.

[0032] When the crankshaft rotates during operation, the oil in the first oil groove 9 and the second oil groove 12 will flow along a spiral path. This flow pattern effectively promotes the circulation of oil, ensuring that the oil can cover the key parts of the compressor in time, reducing friction and extending the service life of the equipment.

[0033] The technical solution of the present utility model optimizes the structural design of the oil groove. The oil enters from the first eccentric oil hole 8 which is transversely connected to the oil pump hole 7, follows the rotation direction of the first oil groove 9 to enter the intermediate shaft shoulder 3 and enters the oil pump hole 7 through the shaft shoulder oil hole 10 and continues to flow upward. Then, the oil enters the second oil groove 12 through the second eccentric oil hole 11 which is transversely connected to the oil pump hole 7, and follows the rotation direction of the second oil groove 12 to enter the side oil hole 13, forming a series of oil circuits and merging into the oil pump hole 7. In addition, a bevel groove 14 is also provided at the end of the end shaft portion 6. The structural design of the oil groove includes but is not limited to parametric design and optimization design such as the pitch of the spiral and the groove depth and shape of the spiral.

[0034] To sum up, with the help of the above-mentioned technical solution of the utility model, through the optimization and improvement design of the product of the utility model, the crankshaft with a spiral groove design is adopted, so that the lubrication effect is significantly improved, which not only improves the oil circulation efficiency but also reduces oil waste. In addition, the design reduces the generation of frictional heat, helps to improve the overall performance of the compressor, so that it can still maintain a good working condition when operating at high load, thereby achieving the beneficial effect of ensuring the stability and reliability of the equipment.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A crankshaft structure for an automobile air-conditioning compressor, characterized in that: The invention comprises an integrally formed auxiliary shaft portion (1), a first eccentric wheel (2), a shaft shoulder portion (3), a second eccentric wheel (4), a main shaft portion (5) and an end shaft portion (6); an oil pump hole (7) is coaxially passed through the auxiliary shaft portion (1), the first eccentric wheel (2), the shaft shoulder portion (3), the second eccentric wheel (4), the main shaft portion (5) and the end shaft portion (6) arranged in sequence; a first oil groove (9) and a second oil groove (12) are respectively provided on the outer side walls of the first eccentric wheel (2) and the second eccentric wheel (4); the first oil groove (9) and the second oil groove (12) are spiral oil grooves arranged obliquely; the first oil groove (9) and the second oil groove (12) are respectively connected to the oil pump hole (7) through the first eccentric wheel oil hole (8) and the second eccentric wheel oil hole (11).

2. The automobile air-conditioning compressor crankshaft structure according to claim 1, characterized in that: A shoulder oil hole (10) is provided through the shoulder portion (3), the shoulder oil hole (10) passes through the oil pump hole (7), and the angle between the shoulder oil hole (10) and the oil pump hole (7) is 90 degrees.

3. The automobile air-conditioning compressor crankshaft structure according to claim 2, characterized in that: The included angle between the first oil groove (9) and the second oil groove (12) is 45 degrees, and the inclination direction of the first oil groove (9) and the second oil groove (12) is consistent with the rotation direction of the crankshaft structure of the automobile air-conditioning compressor.

4. The automobile air-conditioning compressor crankshaft structure according to claim 2, characterized in that: A side oil hole (13) communicating with the oil pump hole (7) is provided on a single side wall of the main shaft portion (5) adjacent to one end of the second eccentric wheel (4).

5. The automobile air-conditioning compressor crankshaft structure according to claim 4, characterized in that: The included angle between the side oil hole (13) and the shoulder oil hole (10) is 90 degrees, the included angle between the side oil hole (13) and the second eccentric oil hole (11) is 45 degrees, and the included angle between the side oil hole (13) and the first eccentric oil hole (8) is 135 degrees.

6. The automobile air-conditioning compressor crankshaft structure according to claim 1, characterized in that: The end of the end shaft portion (6) is provided with a beveled groove (14).

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