Anti-adhesion clutch for automobile air conditioner

Abstract

The anti-adhesion clutch for the automobile air conditioner comprises a belt pulley assembly, a coil assembly and a driving disc assembly correspondingly matched with the belt pulley assembly, the driving disc assembly comprises a spline disc (1), a set of spring pieces (2) are evenly distributed on the spline disc (1), one side of each spring piece (2) is connected with a suction cup (3), and the other side of each spring piece (2) is connected with the suction cup (3). The sucker is characterized in that an electrophoretic paint layer (4) is coated on the sucker (3), and an annular paint-free area (5) is arranged on the electrophoretic paint layer (4). The clutch is simple in structure and convenient to use, and solves the problem of adhesion of the clutch on the premise of ensuring the service life and the torque performance of the clutch.

Description

Technical Field

[0001] This utility model relates to a clutch, specifically an anti-sticking clutch for automotive air conditioning. Background Technology

[0002] The automotive air conditioning electromagnetic clutch consists of three main assemblies: a drive disc assembly, a pulley assembly, and a coil assembly. The friction surfaces of the drive disc assembly are machined using a grinding process. Since both the pulley assembly and the drive disc assembly have metal friction surfaces, in actual use, if the compressor jams or seizes up, the pulley assembly and drive disc assembly will experience slippage torque. When this torque exceeds the torque transmitted by the belt, the clutch cannot continue to slip, and the two metal surfaces of the pulley and drive disc will cold-weld and stick together.

[0003] Therefore, the friction surface of the drive disc assembly of the clutch used in vehicle air conditioning uses electrophoresis processing. The pulley friction plate is made of resin-based material, and the main component of the electrophoretic paint is also resin. In actual use, when the clutch is engaged for a long time, there will be adhesion between the electrophoretic paint between the pulley friction plate and the drive disc friction surface, which will cause the clutch to be unable to disengage.

[0004] Therefore, ensuring that the clutch does not stick when the compressor jams or locks up has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an anti-sticking clutch for automotive air conditioning.

[0006] This application provides the following technical solution:

[0007] An anti-sticking clutch for automotive air conditioning includes a pulley assembly, a coil assembly, and a drive disk assembly corresponding to the pulley assembly. The drive disk assembly includes a keypad with a set of spring plates evenly distributed on the keypad. One side of the spring plates is connected to a suction cup. The characteristic feature is that an electrophoretic paint layer is coated on the friction surface of the suction cup, and at least one annular unpainted area is provided on the electrophoretic paint layer.

[0008] Based on the above technical solutions, the following further technical solutions are also possible:

[0009] The unpainted area is coaxially distributed with the suction cup.

[0010] The ratio of the inner diameter of the unpainted area to the diameter of the suction cup is (0.7-0.8):1, and the ratio of the outer diameter of the unpainted area to the diameter of the suction cup is (0.8-0.95):1.

[0011] Advantages of the utility model:

[0012] This invention has a simple structure and is easy to use, solving the clutch sticking problem while ensuring the service life and torque performance of the clutch. Attached Figure Description

[0013] Figure 1 : This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 :yes Figure 1 Schematic diagram of electrophoretic paint distribution on the central suction cup;

[0015] Figure 3 :yes Figure 2 A structural schematic diagram of the AA cross-sectional view. Detailed Implementation

[0016] like Figure 1-3 As shown, an anti-sticking clutch for automotive air conditioning includes a pulley assembly a, a coil assembly b, and a drive disc assembly c that corresponds to and cooperates with the pulley assembly a. The above structure is prior art and will not be described in detail below.

[0017] An annular groove is provided on the friction surface of the pulley in pulley assembly a, and a friction plate a1 corresponding to and cooperating with drive disc assembly c is installed in the annular groove.

[0018] The drive disk assembly includes: a keypad 1, and a central gasket 8 inside the keypad 1. A set of spring plates 2 are evenly distributed on the keypad 1. The spring plates 2 are connected to the suction cup 3 by internal screws 6 and external rivets 7. A muffler plug 10 is also installed on the spring plates 2.

[0019] An electrophoretic paint layer 4 is coated on the friction surface of the suction cup 3, and an annular unpainted area 5 is provided on the electrophoretic paint layer 4. The unpainted area 5 is coaxially distributed with the suction cup 3. The ratio of the inner diameter of the unpainted area 5 to the diameter of the suction cup 3 is 0.8:1, and the ratio of the outer diameter of the unpainted area 5 to the diameter of the suction cup 3 is 0.9:1.

[0020] Friction plates are installed on the pulley. During processing, the electrophoretic paint at the contact point between the suction cup and the friction plate is removed to avoid the friction plate and suction cup sticking together. When the compressor is stuck, it can prevent the two metal surfaces from directly rubbing together and causing cold welding.

Claims

1. An anti-sticking clutch for automotive air conditioning, comprising a pulley assembly, a coil assembly, and a drive disc assembly corresponding to and cooperating with the pulley assembly, wherein the drive disc assembly comprises: The keyboard (1) has a set of spring sheets (2) evenly distributed on it. One side of the spring sheet (2) is connected to the suction cup (3). The keyboard (1) is characterized by having an electrophoretic paint layer (4) coated on the friction surface of the suction cup (3) and having at least one annular unpainted area (5) on the electrophoretic paint layer (4).

2. The anti-sticking clutch for automotive air conditioning as described in claim 1, characterized in that: The unpainted area (5) is coaxially distributed with the suction cup (3).

3. The anti-sticking clutch for automotive air conditioning as described in claim 1, characterized in that: The ratio of the inner diameter of the unpainted area (5) to the diameter of the suction cup (3) is (0.7-0.8):1, and the ratio of the outer diameter of the unpainted area (5) to the diameter of the suction cup (3) is (0.8-0.95):1.

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