Scroll compressor transmission mechanism, scroll compressor assembly and vehicle air conditioning system

Abstract

The present application provides a scroll compressor transmission mechanism, a scroll compressor assembly and a vehicle air conditioning system. The scroll compressor transmission mechanism includes a motor shaft body, a counterweight balancing block, a transmission boss, an eccentric pin, an eccentric sleeve and a movable scroll unit. The counterweight balancing block is sleeved on one end of the motor shaft body; the transmission boss is fixed to the motor shaft body, and the transmission boss is inserted into the transmission hole of the eccentric sleeve, part of the transmission boss fits with the transmission hole, and the other part of the transmission boss has a spacing with the transmission hole. One end of the eccentric pin is fixed to the motor shaft body, and the other end of the eccentric pin penetrates the counterweight balancing block and the eccentric sleeve at the same time; the movable scroll unit and the eccentric sleeve are rotatably matched. During the steady-state operation of the scroll compressor assembly, there is no supporting force between the movable scroll assembly and the anti-rotation pin, which effectively avoids the problem of the anti-rotation pin being loosened due to alternating external forces. For the compressor as a whole, since there is no exciting force, the vibration and noise effects of the compressor can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of compressors, and in particular to a scroll compressor transmission mechanism, a scroll compressor assembly and a vehicle-mounted air-conditioning system. Background Art

[0002] When the compressor, especially the scroll compressor, is working, the rotor core rotates under the action of electromagnetic force, and in turn drives the motor shaft, eccentric pin, counterweight and movable scroll assembly to rotate. The movable scroll assembly, restricted by six anti-rotation pins, eventually moves in a circular translation around the center line of the motor shaft. The volume of the closed working chamber formed by the meshing of the movable scroll assembly and the fixed scroll assembly gradually decreases, and the refrigerant in the closed working chamber is compressed, thereby realizing the function of compressing the refrigerant. The compressed refrigerant is transported through pipelines to participate in heat exchange.

[0003] The inventors have found that during the operation of the scroll compressor, each anti-rotation pin will be subjected to a supporting force, and the magnitude and direction of each supporting force will change periodically with the change of the direction of the driving force. Each anti-rotation pin is in danger of loosening under the action of this force; and, for the entire compressor, the supporting force exerted on the anti-rotation pin is an exciting force, which will increase the vibration of the compressor and make the noise reduction effect of the compressor worse; in addition, during the operation of the compressor, when impurities exist between the molded lines or liquid hammer occurs in the closed working chamber, the counterweight balance block will deflect along with the movable scroll assembly. At this time, the center of mass of the counterweight balance block will shift significantly, which will cause the compressor to have a large imbalance, and then cause the vibration and noise effects of the compressor to deteriorate. Utility Model Content

[0004] The purpose of the utility model is to provide a scroll compressor transmission mechanism, a scroll compressor assembly and a vehicle-mounted air-conditioning system, which can eliminate the supporting force on the anti-rotation pin by changing the transmission path of the force, the anti-rotation pin is not easy to loosen, and can also effectively improve the vibration and noise effects of the compressor.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a scroll compressor transmission mechanism, comprising:

[0007] A motor shaft body, a counterweight balancing block, a transmission boss, an eccentric pin, an eccentric sleeve and a movable scroll unit; the counterweight balancing block is sleeved on one end of the motor shaft body and the two are fixedly matched, and the inner circumference of the counterweight balancing block is in contact with the outer circumference of the motor shaft body; one end of the transmission boss is fixed on the motor shaft body and the two are coaxially arranged, the other end of the transmission boss passes through the counterweight balancing block and is inserted into the transmission hole of the eccentric sleeve, part of the outer circumference of the transmission boss is in contact with the hole wall of the transmission hole, and another part of the outer circumference of the transmission boss is spaced from the hole wall of the transmission hole;

[0008] One end of the eccentric pin is fixed to the motor shaft body, and the other end of the eccentric pin penetrates the counterweight balancing block and the eccentric sleeve at the same time; the movable scroll unit is rotatably matched with the eccentric sleeve.

[0009] In an optional embodiment, the outer peripheral surface of the transmission boss is tangent to the hole wall of the transmission hole.

[0010] In an optional embodiment, the counterweight balance block includes an integrated connecting sleeve and a fan-shaped block, the connecting sleeve is provided with an assembly groove and a special-shaped positioning hole, the special-shaped positioning hole is arranged on the bottom wall of the assembly groove; one end of the motor shaft body is inserted into the assembly groove, and the inner circumference of the fan-shaped block is in contact with the outer circumference of the motor shaft body; the transmission boss and the eccentric pin are both inserted into the special-shaped positioning hole.

[0011] In an optional embodiment, the height of the transmission boss protruding from the end surface of the motor shaft body is smaller than the height of the eccentric pin protruding from the motor shaft body.

[0012] In an optional embodiment, the eccentric sleeve is provided with a mounting hole connected to the transmission hole, and the eccentric pin is inserted into the mounting hole.

[0013] In an optional embodiment, a positioning groove is provided on a side of the counterweight balancing block facing away from the motor shaft body, and the eccentric sleeve is inserted into the positioning groove.

[0014] In an optional embodiment, the eccentric sleeve includes a connected mounting column and an annular boss, the annular boss is arranged around the mounting column, the transmission hole is arranged on the mounting column, the mounting column and the annular boss are both inserted into the positioning groove, and the annular boss is convexly arranged on the notch of the positioning groove;

[0015] The movable scroll unit is rotatably matched with the mounting column.

[0016] In an optional embodiment, a transmission bearing is provided on the mounting column, and the movable scroll unit is rotatably matched with the mounting column through the transmission bearing.

[0017] In a second aspect, the utility model provides a scroll compressor assembly, the scroll compressor assembly comprising:

[0018] The scroll compressor transmission mechanism of any one of the aforementioned embodiments.

[0019] In a third aspect, the utility model provides a vehicle air conditioning system, the vehicle air conditioning system comprising:

[0020] The scroll compressor assembly described in the above embodiment.

[0021] The beneficial effects of the embodiments of the utility model are:

[0022] In summary, the scroll compressor transmission mechanism provided by this embodiment has a counterweight balancing block sleeved on one end of the motor shaft body and the two are fixedly matched, and the inner circumference of the counterweight balancing block fits with the outer circumference of the motor shaft body, thereby improving the stability and firmness of the assembly and reducing the probability of relative movement between the two. One end of the transmission boss is fixed on the motor shaft body and the two are coaxially arranged, and the other end of the transmission boss passes through the counterweight balancing block and is inserted into the transmission hole of the eccentric sleeve. Part of the outer circumference of the transmission boss fits with the hole wall of the transmission hole, and another part of the outer circumference of the transmission boss has a spacing with the hole wall of the transmission hole. In this way, the transmission boss can transmit the torque of the motor shaft body to the eccentric sleeve through the position where it contacts the hole wall, which is beneficial to the stable operation of the compressor. One end of the eccentric pin is fixed to the motor shaft body, and the other end of the eccentric pin passes through the counterweight balancing block and the eccentric sleeve at the same time, and the eccentric pin and the eccentric sleeve are in a clearance fit state. The movable scroll unit and the eccentric sleeve are rotatably matched. When the compressor is running, the motor shaft body rotates, and the torque is transmitted to the eccentric sleeve through the eccentric pin. Because the eccentric sleeve is positioned by the transmission boss, the eccentric sleeve moves to a position that fits the outer peripheral surface of the transmission boss. The position of the eccentric sleeve is unique and determined, and then it is transmitted to the movable scroll unit through the eccentric sleeve, which can drive the movable scroll unit to make a circular translation around the center of the motor shaft body. In this way, the transmission path of the compressor is changed, so that there is no supporting force between the movable scroll unit and the anti-rotation pin during the steady-state operation of the compressor. Therefore, the improved transmission structure can effectively avoid the problem of the anti-rotation pin being loose due to the alternating external force. For the compressor as a whole, since there is no exciting force, the vibration and noise effects of the compressor can be effectively improved. At the same time, since the counterweight and balancing block and the eccentric sleeve are split structures, during the operation of the compressor, when impurities exist between the molded lines or liquid hammer occurs in the working chamber, there is a gap between part of the outer circumferential surface of the eccentric sleeve and the transmission boss, allowing the eccentric sleeve to deflect with the movable scroll unit, and only the eccentric sleeve deflects with the movable scroll unit, while the counterweight and balancing block will not deflect with the movable scroll unit; at this time, the center of mass of the eccentric sleeve will not shift significantly, and no large imbalance will be generated in the compressor, thereby effectively improving the vibration and noise effects of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a scroll compressor assembly in the prior art;

[0025] Figure 2 for Figure 1 Schematic cross-sectional view of AA in the figure;

[0026] Figure 3 It is a force analysis diagram of a scroll compressor assembly in the prior art;

[0027] Figure 4 A schematic diagram of a scroll compressor transmission mechanism according to an embodiment of the present utility model;

[0028] Figure 5 A schematic diagram of a motor shaft body according to an embodiment of the utility model;

[0029] Figure 6 A schematic diagram of a counterweight balancing block according to an embodiment of the utility model;

[0030] Figure 7 A schematic diagram of an eccentric sleeve according to an embodiment of the utility model;

[0031] Figure 8 It is a schematic diagram of the cooperation between the motor shaft body, the counterweight balancing block and the eccentric pin in the embodiment of the utility model;

[0032] Fig. 9 It is a schematic diagram of the cooperation of the motor shaft body, the counterweight balancing block, the eccentric pin and the eccentric sleeve in the embodiment of the utility model;

[0033] Fig.10 It is a cross-sectional schematic diagram of the scroll compressor transmission mechanism of an embodiment of the utility model;

[0034] Fig.11 for Fig.10 Schematic diagram of the middle AA direction;

[0035] Fig.12 for Fig.10 Schematic diagram of the middle BB direction;

[0036] Fig.13 for Fig.10 Schematic diagram of the CC direction.

[0037] icon:

[0038] 001-orbiting scroll assembly; 002-counterweight balance block; 003-rotor core; 004-motor shaft assembly; 041-motor shaft; 042-eccentric pin; 005-main bearing; 006-secondary bearing; 007-anti-rotation pin; 008-first gap; 009-second gap;

[0039] 100-motor shaft body; 110-fixing hole; 200-counterweight balancing block; 210-connecting sleeve; 220-sector block; 230-assembly groove; 240-special-shaped positioning hole; 250-positioning groove; 300-transmission boss; 400-eccentric pin; 500-eccentric sleeve; 501-transmission hole; 502-mounting hole; 510-mounting column; 520-annular boss; 600-moving scroll unit; 700-transmission bearing; 710-auxiliary bearing; 720-main bearing; 800-rotor core; 900-front balancing block; 910-rear balancing block; 1000-eccentric pin; 1100-spacing. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Please combine Figure 1 and Figure 2 In the prior art, the transmission structure of the scroll compressor includes the main parts such as the movable scroll assembly 001, the counterweight balancing block 002, the rotor core 003, the motor shaft assembly 004, the main bearing 005, the auxiliary bearing 006 and a plurality of anti-rotation pins 007; wherein the motor shaft assembly 004 is mainly composed of the motor shaft 041 and the eccentric pin 042. The counterweight balancing block 002 is provided with an arc surface, and there is a first gap 008 between one side of the arc surface and the outer cylindrical surface of the motor shaft 041, and there is a second gap 009 between the other side and the outer cylindrical surface of the motor shaft 041. Except for the anti-rotation pin 007, the main bearing 005 and the auxiliary bearing 006 which are fixed in the compressor and are stationary, the other parts will have relative movement. During the operation of the scroll compressor, the rotor core 003 rotates under the action of electromagnetic force, and drives the motor shaft 041, the eccentric pin 042, the counterweight 002 and the movable scroll assembly 001 to rotate in turn; the movable scroll assembly 001, under the restriction of multiple anti-rotation pins 007, finally makes a circumferential translation around the center of the motor shaft 041, and the counterweight 002 is stabilized at a position with a first gap 008 and a second gap 009 with the motor shaft 041. The volume of the closed working chamber formed by the meshing of the profile between the movable scroll assembly 001 and the fixed scroll assembly becomes smaller, and the refrigerant in the closed working chamber is compressed, thereby realizing the function of compressing the refrigerant.

[0047] Please combine Figure 3 Furthermore, in order to analyze the force during the movement, the number of anti-rotation pins 007 is six as an example, and it is assumed that during the steady-state operation of the compressor, the driving force on the movable scroll organization is F, and the point of action is the center point O3 of the movable scroll. This force can be decomposed into horizontal force Ft and vertical force Fr; the horizontal force Ft and the refrigerant force Ft on the movable scroll assembly 001 in the horizontal direction are 气The resultant force is zero, the vertical force Fr and the refrigerant force Fr on the moving scroll in the vertical direction 气 , the sum of the supporting forces of the six anti-rotation pins 007 (the sum of Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6), the centrifugal force F of the movable scroll 离1 , the centrifugal force F of the counterweight 002 离2 The net force is zero, that is, Fr = Fr 气 +Fn1+Fn2+Fn3+Fn4+Fn5+Fn6+F 离1 +F 离2 , where Fr is the driving force, Fr 气 ,Fn1,Fn2,Fn3,Fn4,Fn5,Fn6,F 离1 and F 离2 All are load.

[0048] From the above analysis, it can be seen that in the prior art, the vortex compressor assembly is used to balance the vertical component force Fr of the driving force F borne by the movable scroll assembly 001. The six anti-rotation pins 007 bear the supporting forces Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6 respectively, and the magnitude and direction of the supporting force of each anti-rotation pin 007 will change periodically with the change of the driving force direction. Under the action of this force, the anti-rotation pin 007 is in danger of loosening; the periodically changing supporting forces Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6 borne by the anti-rotation pin 007 are exciting forces for the compressor as a whole, which will cause the vibration and noise effects of the compressor to deteriorate. In addition, when there are impurities between the mold lines or liquid hammer occurs in the working chamber, the counterweight balance will deflect with the movable scroll assembly; at this time, the center of mass of the counterweight balance block will shift significantly, which will cause the compressor to have a large imbalance and cause the vibration and noise effects of the compressor to deteriorate.

[0049] In view of this, the designer provides a scroll compressor transmission mechanism, in which the anti-rotation pin is not easy to loosen during the operation of the compressor, and the vibration and noise are small.

[0050] Please combine Figure 4-Figure 9In this embodiment, the scroll compressor transmission mechanism includes a motor shaft body 100, a counterweight balancing block 200, a transmission boss 300, an eccentric pin 1000, an eccentric sleeve 500 and a movable scroll unit 600. The counterweight balancing block 200 is sleeved on one end of the motor shaft body 100 and the two are fixedly matched, and the inner circumference of the counterweight balancing block 200 is in contact with the outer circumference of the motor shaft body 100; one end of the transmission boss 300 is fixed on the motor shaft body 100 and the two are coaxially arranged, and the other end of the transmission boss 300 passes through the counterweight balancing block 200 and is inserted into the transmission hole 501 of the eccentric sleeve 500, and part of the outer circumference of the transmission boss 300 is in contact with the hole wall of the transmission hole 501, and the other part of the outer circumference of the transmission boss 300 is spaced 1100 from the hole wall of the transmission hole 501. One end of the eccentric pin 1000 is fixed to the motor shaft body 100 , and the other end of the eccentric pin 1000 penetrates both the counterweight 200 and the eccentric sleeve 500 ; the movable scroll unit 600 is rotatably matched with the eccentric sleeve 500 .

[0051] Based on the above, the working principle of the scroll compressor transmission mechanism of this embodiment is as follows:

[0052] When the compressor is running, the motor shaft body 100 rotates, and the torque is transmitted to the eccentric sleeve 500 through the deflection pin. Since the eccentric sleeve 500 is positioned under the transmission boss 300, the eccentric sleeve 500 moves to a position that fits the outer peripheral surface of the transmission boss 300. The position of the eccentric sleeve 500 is unique and determined, and then transmitted to the movable scroll unit 600 through the eccentric sleeve 500, which can drive the movable scroll unit 600 to make a circular translation around the center O1 of the motor shaft body 100. In this way, the transmission path of the compressor is changed, so that there is no supporting force between the movable scroll unit 600 and the anti-rotation pin during the steady-state operation of the compressor. Therefore, the improved transmission structure can effectively avoid the problem of the anti-rotation pin being loose due to the alternating external force. For the compressor as a whole, since there is no exciting force, the vibration and noise effects of the compressor can be effectively improved. At the same time, since the counterweight balancing block 200 and the eccentric sleeve 500 are split structures, during the operation of the compressor, when impurities exist between the molded lines or liquid hammer occurs in the working chamber, a spacing of 1100 is provided between part of the outer peripheral surface of the eccentric sleeve 500 and the transmission boss 300, allowing the eccentric sleeve 500 to deflect along with the movable scroll unit 600, and only the eccentric sleeve 500 deflects along with the movable scroll unit 600, while the counterweight balancing block 200 does not deflect along with the movable scroll unit 600; at this time, the center of mass of the eccentric sleeve 500 does not deflect significantly, and does not cause a large imbalance to the compressor, thereby effectively improving the vibration and noise effects of the compressor.

[0053] The detailed structure of the scroll compressor transmission mechanism of the embodiment of the present application is described below by way of example.

[0054] Please combine Figure 4-Figure 13 In this embodiment, the scroll compressor transmission mechanism includes a motor shaft body 100, a counterweight balancing block 200, a transmission boss 300, an eccentric pin 1000, an eccentric sleeve 500, a movable scroll unit 600, a transmission bearing 700, a rotor core 800, a secondary bearing 710, a main bearing 720, a front balancing block 900, a rear balancing block 910 and an anti-rotation pin. The transmission boss 300 and the eccentric pin 1000 are both fixed on the same end face of the motor shaft body 100, the transmission boss 300 is a truncated cone structure and is coaxially arranged with the motor shaft body 100, and the eccentric pin 1000 is a cylindrical pin and is eccentrically arranged with the motor shaft body 100. The counterweight balancing block 200 is interference fit with the motor shaft body 100, and the transmission boss 300 and the eccentric pin 1000 both penetrate the counterweight balancing block 200. The transmission boss 300 and the eccentric pin 1000 are both inserted into the eccentric sleeve 500. Part of the outer peripheral surface of the transmission boss 300 fits with the hole wall of the transmission hole 501 of the eccentric sleeve 500. Another part of the outer peripheral surface of the transmission boss 300 and the hole wall have a spacing of 1100. For example, in this embodiment, the outer peripheral surface of the transmission boss 300 is tangent to the hole wall of the transmission hole 501, and the tangent point is A. In this way, the transmission boss 300 fits with the eccentric sleeve 500 at the tangent position, and the remaining positions have a spacing of 1100, which is convenient for the processing of the transmission boss 300 and the eccentric sleeve 500, and also convenient for the assembly of the two. The movable scroll unit 600 is rotatably matched with the eccentric sleeve 500 through the transmission bearing 700. The rotor core 800 is sleeved on the outside of the motor shaft body 100, and the auxiliary bearing 710 and the main bearing 720 are both sleeved on the outside of the motor shaft body 100 and located on both sides of the rotor core 800. The front balancing block 900 is fixed on the end surface of the rotor core 800 close to the auxiliary bearing 710, and the rear balancing block 910 is fixed on the end surface of the rotor core 800 close to the main bearing 720. The anti-rotation pin is fixed on the compressor housing and plugged into the corresponding anti-rotation groove on the movable scroll unit 600. The number of anti-rotation pins can be set as required. In this embodiment, for the convenience of description, six anti-rotation pins are taken as an example for description.

[0055] Among the above parts, except for the anti-rotation pin, the main bearing 720 and the auxiliary bearing 710 which are fixed in the compressor housing and remain stationary, the other parts will move relative to each other. During the operation of the compressor, the rotor core 800 rotates under the action of the electromagnetic force, and drives the motor shaft body 100, the eccentric pin 1000, the eccentric sleeve 500 and the movable scroll unit 600 to rotate in turn; in the above process, the eccentric sleeve 500 is restricted by the transmission boss 300 and can only rotate to the tangential contact position with the transmission boss 300 at point A. At this time, the position of the movable scroll unit 600 installed on the eccentric sleeve 500 is uniquely determined, and finally the movable scroll unit 600 performs a circular translation around the center of the motor shaft. The volume of the closed working chamber formed by the meshing of the profile between the movable scroll unit 600 and the static scroll assembly becomes smaller, and the refrigerant in the closed working chamber is compressed, thereby realizing the function of compressing the refrigerant.

[0056] Please combine Fig.10 and Fig.13 ,in, Fig.13 FIG. 2 shows a force diagram of the scroll compressor transmission mechanism in this embodiment. Fig.13 The arrow in represents the rotation direction of the motor shaft body 100, and the force analysis is as follows:

[0057] During the steady-state operation of the compressor, the driving force on the movable scroll unit 600 is F, and the point of action is the center point O3 of the movable scroll unit 600. This force can be decomposed into a horizontal force Ft and a vertical force Fr; the horizontal force Ft and the refrigerant force Fr on the movable scroll unit 600 in the horizontal direction are t气 The resultant force is zero, but the vertical force Fr and the refrigerant force F acting on the movable scroll unit 600 in the vertical direction are r气 、The centrifugal force F of the moving scroll 离1 , centrifugal force F of eccentric sleeve 500 离2 The resultant force is not zero, and Fr>F r气 +F 离1 +F 离2 , which will cause the eccentric sleeve 500 to have a tendency to rotate clockwise around the center point O2 of the eccentric pin 1000, and then at the point A position where the eccentric sleeve 500 is tangent to the transmission boss 300, the transmission boss 300 generates a support force of Fn on the eccentric sleeve 500, and just prevents the eccentric sleeve 500 from rotating clockwise around the center point O2 of the eccentric pin 1000. In the above transmission process, there are no support forces Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6 between the movable scroll unit 600 and the six anti-rotation pins. Therefore, the scroll compressor transmission mechanism provided in this embodiment can effectively avoid the problem of the danger of the anti-rotation pin being loosened due to the alternating external force. For the entire compressor, since there is no exciting force Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6, the vibration and noise effects of the compressor can be effectively improved. At the same time, since the counterweight balancing block 200 and the eccentric sleeve 500 are split structures, during the operation of the compressor, when impurities exist between the molded lines or liquid hammer occurs in the working chamber, only the eccentric sleeve 500 will deflect along with the movable scroll unit 600, while the counterweight balancing block 200 will not deflect along with the movable scroll unit 600; at this time, the center of mass of the eccentric sleeve 500 will not shift significantly, and a large imbalance will not be generated in the compressor, thereby effectively improving the vibration and noise effects of the compressor.

[0058] Please combine Figure 5In this embodiment, optionally, a fixing hole 110 is provided on the end face of the motor shaft body 100, and the fixing hole 110 can be a blind hole. The eccentric pin 1000 is inserted into the fixing hole 110, and the eccentric pin 1000 and the fixing hole 110 are interference fit. At the same time, the eccentric pin 1000 is a cylindrical pin, and the outer diameter of the eccentric pin 1000 is greater than the outer diameter of the transmission boss 300, and the height of the eccentric pin 1000 protruding from the motor shaft body 100 is greater than the height of the transmission boss 300 protruding from the motor shaft body 100. Such a design is conducive to the arrangement of the eccentric pin 1000 and the transmission boss 300 in the limited space of the motor shaft body 100, and the eccentric pin 1000 is subjected to greater force, and its diameter is larger and not easy to be damaged, while the diameter of the transmission boss 300 is smaller, and its length is set shorter, which plays the role of positioning the eccentric sleeve 500 and enhances its own structural strength, is not easy to bend or break, has a long service life, and is safe and reliable to use.

[0059] For example, in this embodiment, the height of the eccentric pin 1000 protruding from the motor shaft body 100 is 2-3 times the height of the transmission boss 300 protruding from the motor shaft.

[0060] It should be noted that the transmission boss 300 can be configured as an integrated structure with the motor shaft body 100, which is easy to process, and the overall structure has high strength and a long service life.

[0061] Please combine Figure 6 and Figure 8 In this embodiment, the counterweight balancing block 200 optionally includes an integrated connecting sleeve 210 and a sector block 220. The connecting sleeve 210 is provided with an assembly groove 230 and a special-shaped positioning hole 240. The special-shaped positioning hole 240 is provided on the bottom wall of the assembly groove 230. One end of the motor shaft body 100 is inserted into the assembly groove 230, and the inner circumference of the sector block 220 is in contact with the outer circumference of the motor shaft body 100; the transmission boss 300 and the eccentric pin 1000 are both inserted into the special-shaped positioning hole 240. The counterweight balancing block 200 has a simple structure, and by providing the special-shaped positioning hole 240, the transmission boss 300 and the eccentric pin 1000 can be positioned at the same time, which reduces the processing difficulty and the processing cost. It should be understood that the inner circumference of the sector block 220 is a cylindrical surface. After the counterweight balance block 200 is installed on the motor shaft body 100, the axis of the inner circumference is collinear with the axis of the motor shaft body 100, and the inner circumference fits more closely with the outer circumference of the motor shaft body 100, with high assembly quality and high combination stability.

[0062] Furthermore, a positioning groove 250 is provided on the side of the connecting sleeve 210 that is away from the motor shaft body 100. The positioning groove 250 and the assembly groove 230 are located on two opposite sides of the counterweight balancing block 200, and the special-shaped positioning hole 240 passes through the bottom wall of the positioning groove 250. By providing the positioning groove 250, the position of the eccentric sleeve 500 can be located, which is convenient for the installation of the eccentric sleeve 500.

[0063] Please combine Figure 7 and Fig. 9 In this embodiment, optionally, the eccentric sleeve 500 includes a connected mounting cylinder 510 and an annular boss 520. The mounting cylinder 510 can be a cylinder, and the annular boss 520 can be an annular boss. The annular boss 520 is arranged around the mounting cylinder 510. The mounting cylinder 510 and the annular boss 520 can be arranged as a coaxial integrated structure, which has high structural strength and long service life. The mounting cylinder 510 is provided with a transmission hole 501 and a mounting hole 502. The transmission hole 501 is a blind hole, which corresponds to the height of the transmission boss 300. The mounting hole 502 is a through hole, and the mounting hole 502 is provided for the eccentric pin 1000 to pass through. The mounting cylinder 510 and the annular boss 520 are both inserted into the positioning groove 250, and the annular boss 520 is convexly arranged in the notch of the positioning groove 250. The transmission bearing 700 is sleeved on the outside of the installation column 510 , and the side surface of the transmission bearing 700 abuts against the annular boss 520 , thereby limiting the position of the transmission bearing 700 and preventing the transmission bearing 700 from directly contacting the counterweight balancing block 200 .

[0064] It should be understood that, due to the small height of the transmission boss 300 , the transmission hole 501 can be set as a blind hole, which reduces the opening area of ​​the eccentric sleeve 500 , reduces the processing difficulty, and improves the structural strength of the eccentric sleeve 500 .

[0065] The scroll compressor transmission mechanism provided in the present embodiment changes the transmission path of the compressor by setting the transmission boss 300 and the eccentric sleeve 500 to be tangentially matched, so that during the steady-state operation of the compressor, there are no supporting forces Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6 between the movable scroll unit 600 and the six anti-rotation pins, which can effectively avoid the risk of the anti-rotation pins loosening due to alternating external forces. For the entire compressor, since there is no exciting forces Fn1, Fn2, Fn3, Fn4, Fn5, Fn6, the vibration and noise effects of the compressor can be effectively improved. At the same time, since the counterweight balancing block 200 and the eccentric sleeve 500 are split structures, during the operation of the compressor, when impurities exist between the molded lines or liquid hammer occurs in the working chamber, only the eccentric sleeve 500 will deflect along with the movable scroll assembly, while the counterweight balancing block 200 will not deflect along with the movable scroll assembly; at this time, the center of mass of the eccentric sleeve 500 will not be greatly offset, and a large imbalance will not be generated in the compressor, thereby effectively improving the vibration and noise effects of the compressor.

[0066] This embodiment also provides a scroll compressor assembly, which includes the above-mentioned scroll compressor transmission mechanism and has at least the advantages of stable and reliable operation and low noise.

[0067] This embodiment also provides a vehicle air-conditioning system, which includes the above-mentioned scroll compressor assembly and has at least the advantages of stable and reliable operation and low noise.

[0068] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A scroll compressor transmission mechanism, characterized in that: include: A motor shaft body (100), a counterweight balancing block (200), a transmission boss (300), an eccentric pin (1000), an eccentric sleeve (500) and a movable scroll unit (600); the counterweight balancing block (200) is sleeved on one end of the motor shaft body (100) and the two are fixedly matched, and the inner circumferential surface of the counterweight balancing block (200) is in contact with the outer circumferential surface of the motor shaft body (100); one end of the transmission boss (300) is fixed to The transmission boss (300) is coaxially arranged on the motor shaft body (100), the other end of the transmission boss (300) passes through the counterweight balancing block (200) and is inserted into the transmission hole (501) of the eccentric sleeve (500), a portion of the outer circumference of the transmission boss (300) is in contact with the hole wall of the transmission hole (501), and another portion of the outer circumference of the transmission boss (300) is spaced (1100) from the hole wall of the transmission hole (501); One end of the eccentric pin (1000) is fixed to the motor shaft body (100), and the other end of the eccentric pin (1000) simultaneously penetrates the counterweight balancing block (200) and the eccentric sleeve (500); the movable scroll unit (600) is rotatably matched with the eccentric sleeve (500).

2. The scroll compressor transmission mechanism according to claim 1, characterized in that: The outer peripheral surface of the transmission boss (300) is tangent to the hole wall of the transmission hole (501).

3. The scroll compressor transmission mechanism according to claim 1, characterized in that: The counterweight balancing block (200) comprises an integrated connecting sleeve (210) and a sector block (220); the connecting sleeve (210) is provided with an assembly groove (230) and a special-shaped positioning hole (240); the special-shaped positioning hole (240) is arranged on the bottom wall of the assembly groove (230); one end of the motor shaft body (100) is inserted into the assembly groove (230), and the inner circumference of the sector block (220) is in contact with the outer circumference of the motor shaft body (100); the transmission boss (300) and the eccentric pin (1000) are both inserted into the special-shaped positioning hole (240).

4. The scroll compressor transmission mechanism according to claim 1, characterized in that: The height of the transmission boss (300) protruding from the end surface of the motor shaft body (100) is smaller than the height of the eccentric pin (1000) protruding from the motor shaft body (100).

5. The scroll compressor transmission mechanism according to claim 1, characterized in that: The eccentric sleeve (500) is provided with a mounting hole (502) which is in communication with the transmission hole (501), and the eccentric pin (1000) is inserted into the mounting hole (502).

6. The scroll compressor transmission mechanism according to claim 1, characterized in that: A positioning groove (250) is provided on the side of the counterweight balancing block (200) facing away from the motor shaft body (100), and the eccentric sleeve (500) is inserted into the positioning groove (250).

7. The scroll compressor transmission mechanism according to claim 6, characterized in that: The eccentric sleeve (500) comprises a connected mounting column (510) and an annular boss (520), the annular boss (520) is arranged around the mounting column (510), the transmission hole (501) is arranged on the mounting column (510), the mounting column (510) and the annular boss (520) are both inserted into the positioning groove (250), and the annular boss (520) is convexly arranged on the notch of the positioning groove (250); The movable scroll unit (600) is rotatably matched with the mounting column (510).

8. The scroll compressor transmission mechanism according to claim 7, characterized in that: A transmission bearing (700) is provided on the mounting column (510), and the movable scroll unit (600) is rotatably matched with the mounting column (510) via the transmission bearing (700).

9. A scroll compressor assembly, characterized in that: The scroll compressor assembly comprises: The scroll compressor transmission mechanism according to any one of claims 1 to 8.

10. A vehicle air conditioning system, characterized in that: The vehicle air conditioning system comprises: The scroll compressor assembly as claimed in claim 9.

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