Swing mechanism of wobble plate type automobile air conditioner compressor

Abstract

A wobble mechanism of a wobble plate type automobile air conditioner compressor belongs to the field of automobile air conditioner compressors and comprises a main shaft, a swash plate, a wobble plate assembly, a wobble plate gasket, a swash plate gasket and a thrust bearing, the swash plate is fixedly connected onto the main shaft, the wobble plate assembly comprises a wobble plate body sleeved on the swash plate, the wobble plate gasket and the swash plate gasket are correspondingly arranged between the swash plate and the wobble plate body, and the wobble plate gasket and the swash plate gasket are arranged on the wobble plate body. The thrust bearing device is arranged between the swash plate and the wobble plate body, a limiting flange is arranged on the circumferential edge of the back side plane of the wobble plate body, a limiting notch corresponding to the limiting flange is formed in the circumferential edge of the wobble plate gasket, and the limiting flange can be correspondingly embedded in the limiting notch in a matched mode to limit the wobble plate gasket in the circumferential direction. The swing disc gasket and the swing disc body are kept to move synchronously in the working operation state, the situation that the swing disc body is possibly damaged by the friction effect between the swing disc gasket and the swing disc body is avoided, the adverse effects on the operation safety, stability and reliability of the compressor are eliminated, the service life of the swing disc body is prolonged, and the operation efficiency of the swing mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile air conditioner compressor, concretely relates to a swing mechanism of wobble plate type automobile air conditioner compressor. BACKGROUND

[0002] In the wobble plate type automobile air conditioner compressor, the wobble plate body and the main shaft are connected to form the swing mechanism of the compressor, and the rotary motion of the main shaft can be converted into the swing motion of the wobble plate body, and then the piston can be driven to reciprocate along the axial direction through the connecting rod to compress and liquefy and suction and vaporize the refrigerant. Among them, the wobble plate body is connected with the connecting rod to form an assembly structure by using the wobble plate ball socket on the disc surface in a lock sleeve manner, and the connecting rod has a swing degree of freedom relative to the wobble plate body, and the connecting and fitting precision is relatively high. In the current production, the connecting rod ball head is pressed into the wobble plate ball socket for assembly. In order to ensure the process of pressing, the wobble plate body is usually made of a metal material with low hardness, such as AC8C cast aluminum alloy. In the swing mechanism of the automobile air conditioner compressor, the wobble plate body is axially swung by the rotating swash plate. The wobble plate gasket and the swash plate gasket are arranged correspondingly between the wobble plate body and the swash plate to avoid direct contact between the wobble plate body and the swash plate. However, the wobble plate gasket and the swash plate gasket are in a free state without axial constraint and are in surface contact with the wobble plate body and the swash plate, respectively. Therefore, it is obvious that the wobble plate gasket and the swash plate gasket are likely to rotate relative to the wobble plate body and the swash plate, respectively, during the rotation of the swash plate to push the wobble plate body to swing, which causes friction damage and increases the running resistance. In particular, the wobble plate body with low base strength is likely to be damaged and produce peeling debris due to the long-time friction of the wobble plate gasket, which easily affects the normal operation of the compressor, and in severe cases, the compressor may be locked to cause functional failure. More seriously, the wobble plate body may be directly broken to cause the compressor to be directly scrapped. Therefore, it is necessary to further research and improve the swing mechanism of the wobble plate type automobile air conditioner compressor, optimize and improve the design structure, and solve the problems in the prior art. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a swing mechanism of wobble plate type automobile air conditioner compressor, solving the problem of friction and wear under the running state of the wobble plate body, improving the service life of the wobble plate body and the running efficiency of the swing mechanism, and enhancing the safety and reliability of the operation of the automobile air conditioner compressor.

[0004] A swing mechanism of a wobble plate type automobile air conditioner compressor, comprising: a main shaft, a swash plate, a wobble plate assembly, a wobble plate gasket, a swash plate gasket and a thrust bearing, the swash plate is coaxially fixedly connected on the main shaft and can be driven to rotate by the main shaft, the wobble plate assembly further comprises a wobble plate body which is coaxially fitted on the connecting sleeve of the swash plate, can rotate relative to the swash plate and is periodically swung along the axial direction by the swash plate in the rotating state, the wobble plate gasket and the swash plate gasket are both circular ring shapes and are correspondingly arranged between the swash plate and the wobble plate body, the thrust bearing cooperation device is arranged between the swash plate and the wobble plate body to reduce the friction resistance of the relative movement between the swash plate and the wobble plate, a circular arc shaped limiting flange is arranged on the back side plane of the wobble plate body, the limiting flange is distributed along the circumferential edge of the back side plane of the wobble plate body, and a limiting slot is distributed and arranged on the circumferential edge of the wobble plate gasket, the limiting slot and the limiting flange are correspondingly arranged, the limiting flange can be correspondingly fitted and embedded in the limiting slot when the wobble plate gasket and the wobble plate body are coaxially fitted and stacked, the wobble plate gasket is circumferentially limited relative to the wobble plate body, the wobble plate gasket is limited to rotate relative to the wobble plate body, friction between the wobble plate gasket and the wobble plate body is avoided, and dynamic safety protection is implemented on the wobble plate body in the working state.

[0005] Preferably, the setting position of the limiting flange on the back side plane of the wobble plate body corresponds to the opening position of the wobble plate ball socket on the wobble plate body, the opening position of the wobble plate ball socket has a structure feature of protruding radially relative to the wobble plate body, the radial width D of the limiting flange is set to enhance the stability and reliability of the limiting action of the limiting flange.

[0006] Preferably, a surface hardening layer is constructed on the outer surface of the limiting flange arranged on the back side plane of the wobble plate body, the surface hardening layer is formed by surface heat treatment process processing, the surface hardness and wear resistance of the limiting flange are improved, and the reliability of the circumferential limiting of the wobble plate gasket is further enhanced.

[0007] Preferably, the swash plate gasket is fitted on the connecting sleeve of the swash plate in an interference fit, the swash plate gasket is limited to rotate relative to the swash plate, friction between the swash plate gasket and the swash plate is avoided, and the rotating friction resistance relative to the swash plate in the working state is reduced.

[0008] Preferably, an outer circumferential limit stop extending inwardly and perpendicularly to the circular disc surface of the swash plate gasket is arranged on the outer circumferential edge of the swash plate gasket, and an inner circumferential limit stop extending inwardly and perpendicularly to the circular disc surface of the swash plate gasket is arranged on the inner circumferential edge of the swash plate gasket, and the thrust bearing is enclosed in the annular space formed by the swash plate gasket and the outer circumferential limit stop thereof and the swash plate gasket and the inner circumferential limit stop thereof, so as to prevent the thrust bearing from possibly coming into dynamic contact with the swash plate or the swash plate body in a working operation state, and causing friction damage to the swash plate and the swash plate body.

[0009] Preferably, the outer circumferential limit stops are arranged in sequence on the outer circumferential edge of the swash plate gasket, and correspondingly arranged on the bottom arc of the limit slot, so as to optimize the design structure and ensure the operation function on the basis of achieving the purpose of separating and protecting the limit flange.

[0010] The swivel mechanism of the swash plate type automobile air conditioner compressor has the advantages that the limit flange is arranged on the back side of the swash plate body, the limit slot is correspondingly arranged on the swash plate gasket, the limit flange and the limit slot are matched to limit the rotation of the swash plate gasket relative to the swash plate body, the swash plate gasket keeps synchronous movement with the swash plate body in a working operation state, the rotating movement state of the swash plate gasket relative to the swash plate body is completely eliminated, the friction between the swash plate gasket and the swash plate body is effectively avoided, the damage of the swash plate body is avoided, the adverse effects on the working operation safety, stability and reliability of the automobile air conditioner compressor are eliminated, the prior art problems are solved, and the overall function quality of the automobile air conditioner compressor is improved and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure diagram of the swivel mechanism of the swash plate type automobile air conditioner compressor in the embodiment.

[0012] Figure 2 It is a structure diagram of the swivel mechanism of the swash plate type automobile air conditioner compressor in the embodiment. Figure 1 It is a partial enlarged view of position I.

[0013] Figure 3 It is a structure front view of the swash plate gasket in the embodiment.

[0014] Figure 4 It is a structure side view of the swash plate gasket in the embodiment.

[0015] Figure 5 It is a three-dimensional structure diagram of the swash plate gasket and the swash plate body in the embodiment.

[0016] Wherein: 1 is the main shaft, 2 is the swash plate, 3 is the rocker body, 4 is the rocker gasket, 5 is the swash plate gasket, 6 is the thrust bearing, 7 is the shaft sleeve, 8 is the cooperative shaft, 9 is the duckbill guide column, 10 is the bushing, 11 is the limiting flange, 12 is the limiting notch, 13 is the outer peripheral limiting stop, 14 is the inner peripheral limiting stop, and 15 is the connecting rod. DETAILED DESCRIPTION

[0017] Further, the technical scheme claimed in the utility model is described in detail in combination with specific embodiments and drawings.

[0018] A swinging mechanism of a swash plate type automobile air conditioner compressor, such as Figures 1 to 5As shown, by the main shaft 1, swash plate 2, rocker assembly, rocker pad 4, swash plate pad 5, thrust bearing 6 and shaft sleeve 7, wherein: the rocker assembly is composed of rocker body 3, bushing 10 and connecting rod 15; the main shaft 1 is a power transmission shaft, the shaft body has a lateral vertical set of collaborative shaft 8, the swash plate 2 is installed on the main shaft 1 through the shaft sleeve 7, and is connected to the collaborative shaft 8 by the connecting lug on the swash plate 2, so that the swash plate 2 can be driven by the main shaft 1 to rotate synchronously; the front side of the rocker assembly is provided with five rocker ball sockets and is connected with the connecting rod 15 respectively, and the bushing 10 is fitted on the connecting sleeve of the swash plate 2, two duckbill guide columns 9 are arranged on the rocker body 3, and the two duckbill guide columns 9 are combined to form a guide groove, which is matched with the guide pin connected to the compressor housing to limit the rotary motion of the rocker body 3, but can guide the rocker body 3 to periodically swing along the axial direction under the push of the swash plate 2 in the rotating state; the rocker pad 4, the thrust bearing 6 and the swash plate pad 5 are sequentially embedded between the rocker body 3 and the swash plate 2, wherein the rocker body 3 is made of AC8C aluminum alloy material, and the back side plane of the rocker body 3 is provided with a circular arc shaped limiting flange 11, which is arranged corresponding to the position of the five rocker ball sockets on the front side plane, has a radial width D, and four limiting grooves 12 are arranged on the edge of the rocker pad 4, wherein one limiting groove 12 corresponds to the two limiting flanges 11 adjacent to the guide groove on the rocker body 3, and the other three limiting grooves 12 correspond to the other three limiting flanges 11 respectively, when the rocker pad 4 is connected with the rocker body 3, the two limiting flanges 11 adjacent to the guide groove and the other three limiting flanges 11 are respectively embedded in the four limiting grooves 12 on the rocker pad 4, so that the rocker pad 4 and the rocker body 3 are coaxially connected and stacked, and the rocker pad 4 is limited in the circumferential direction relative to the rocker body 3; the outer surface of the limiting flange 11 is subjected to laser surface hardening treatment, so that the outer surface of the limiting flange 11 has a thickness range of 0.5~1.A 5 mm hardened layer improves surface hardness and wear resistance. The specific processing method involves: using a high-energy laser beam to scan and heat the surface of the limiting flange 11, followed by cooling in air via the heat conduction of the swashplate body 3. The swashplate 5 is interference-fitted onto the connecting sleeve of the swashplate 2, ensuring it rotates synchronously with the swashplate 2. The thrust bearing 6 is a needle roller thrust bearing, embedded between the mating surfaces of the swashplate 4 and the swashplate 5. A continuous inner circumferential stop 14 is provided on the inner circumferential edge of the swashplate 5 to block... The inner bushing of the thrust bearing 6 may come into dynamic contact with the connecting sleeve on the swashplate 2. To prevent frictional damage, sequentially continuous outer circumferential stops 13 are provided on the outer circumferential edge of the rocker plate 4. These outer circumferential stops 13 are respectively arranged on the bottom arc of each of the limiting slots 12. This ensures that the outer circumferential stops 13 can prevent dynamic contact between the outer bushing of the thrust bearing 6 and the limiting flange 11 on the rocker plate body 3, without structurally interfering with the normal operation of the automotive air conditioning compressor.

[0019] The oscillating mechanism of the rocker-type automotive air conditioning compressor described in this embodiment is as follows: Figures 1 to 5 As shown, since the rocker plate 4 is axially limited and overlapped on the rocker plate body 3 through an interlocking fit between the limiting slot 12 and the upper limiting flange 11 of the rocker plate body 3, and the swashplate 5 is fixedly connected to the swashplate 2 by an interference fit, therefore, in the operating state of the rocker plate type automotive air conditioning compressor, there will be no relative movement between the rocker plate 4 and the rocker plate body 3, but only synchronous axial oscillation together with the rocker plate body 3 under the push of the swashplate 2. At the same time, since the swashplate 5 is fixedly connected to the swashplate 2 by an interference fit, there will be no relative movement between the swashplate 5 and the swashplate 2, but only synchronous rotation together with the swashplate 2 under the drive of the main shaft 1. Therefore, the rocker plate 4 and the rocker plate body 3... There is no sliding friction between the swash plate 5 and the swash plate 2. Therefore, this optimized structure of the rocker-type automotive air conditioning compressor can solve the technical problem in the prior art where the rocker body 3 may generate peeling debris due to friction, affecting its normal operation or damaging its function. Moreover, it can completely replace the relatively high-resistance friction between the swash plate 5 and the swash plate 2 with the low-resistance frictional fit between the thrust bearing 6 and the rocker-type gasket 4 and the swash plate 5, thereby reducing the frictional wear of the swash plate 5, reducing the operating resistance of the rocker mechanism in the rocker-type automotive air conditioning compressor, and improving the overall working efficiency of the rocker-type automotive air conditioning compressor.

Claims

1. A rocking mechanism for a rocking disc type automotive air conditioning compressor, characterized in that, The utility model relates to a kind of swash plate type variable displacement piston pump, including: Main shaft (1), swash plate (2), wobble plate assembly, wobble plate gasket (4), swash plate gasket (5) and thrust bearing (6), the swash plate (2) coaxial fixed connection is connected on the main shaft (1), can be driven by the main shaft (1) rotation, the wobble plate assembly further includes wobble plate body (3), the wobble plate body (3) coaxial cooperation is sleeved on the connecting sleeve of the swash plate (2), can be rotated relative to the swash plate (2) and be pushed along axial periodic swing by the swash plate (2) of rotating state, the wobble plate gasket (4) and the swash plate gasket (5) are circular ring shape, corresponding each other between the swash plate (2) and the wobble plate body (3) are set, the thrust bearing (6) cooperation device between the swash plate (2) and the wobble plate body (3), there is arc-shaped limit flange (11) on the backside plane of the wobble plate body (3), the limit flange (11) is distributed along the circumferential edge of the backside plane of the wobble plate body (3), while limit slot (12) is distributed on the circumferential edge of the wobble plate gasket (4), the limit slot (12) is correspondingly arranged with the limit flange (11), when the wobble plate gasket (4) and the wobble plate body (3) coaxial cooperation are superposed, the limit flange (11) can be respectively correspondingly fitted in the limit slot (12) and the wobble plate gasket (4) circumferential limit.

2. The wobble mechanism of the rocking plate type automotive air conditioning compressor as set forth in claim 1, wherein: The setting position of the limit flange (11) on the backside plane of the wobble plate body (3) corresponds to the opening position of wobble plate ball socket on the wobble plate body (3).

3. The wobble mechanism of a swash plate type automobile air conditioning compressor as recited in claim 2, wherein: Surface hardening layer is built on the outer surface of the limit flange (11) arranged on the backside plane of the wobble plate body (3), and the surface hardening layer is formed by surface heat treatment process.

4. The wobble mechanism of a wobble plate type air conditioning compressor for an automobile according to any one of claims 1 to 3, wherein: The swash plate gasket (5) is interference fitted on the connecting sleeve of the swash plate (2).

5. The wobble mechanism of a swash plate type automobile air conditioning compressor as recited in claim 4, wherein: The outer circumferential edge of the wobble plate gasket (4) is provided with an outer circumferential limit stop (13) extending inwardly perpendicular to the disc surface of the wobble plate gasket (4), and the inner circumferential edge of the swash plate gasket (5) is provided with an inner circumferential limit stop (14) extending inwardly perpendicular to the disc surface of the swash plate gasket (5), and the thrust bearing (6) is enclosed and accommodated in the annular space composed of the wobble plate gasket (4), the outer circumferential limit stop (13) thereof, the swash plate gasket (5) and the inner circumferential limit stop (14) thereof.

6. The wobble mechanism of a swash plate type automobile air conditioning compressor according to claim 5, wherein: The outer circumferential limit stop (13) is sequentially arranged on the outer circumferential edge of the wobble plate gasket (4) and correspondingly arranged on the bottom arc of the limit slot (12).

Images