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Electromagnetic clutch

An electromagnetic clutch and excitation coil technology, applied in the field of clutches, can solve the problems of unsynchronized tightening or unscrewing deformation, unbalanced friction force, etc.

Inactive Publication Date: 2014-06-18
SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The coil spring vibrates during movement, and the tightening or loosening deformation of its various parts is not synchronous. Although the above patent can ensure that the spring will rub against the pulley when the spring is loosened, the friction force is often unbalanced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The electromagnetic clutch of the compressor is set on the path where the engine transmits the rotational force to the compressor, so that the power transmission can be continued or stopped. The compressor includes a main shaft 30 driven to rotate and a compression mechanism (not shown). When the electromagnetic clutch is engaged, the rotational force on the engine is transmitted to the main shaft 30 through the electromagnetic clutch. When the main shaft 30 rotates, the compression mechanism gives a load to the main shaft 30. When the load is too large, the attraction force on the electromagnetic clutch may be insufficient to cause slippage.

[0030] like figure 2 As shown, the electromagnetic clutch includes a pulley 1, and the engine drives the pulley 1 through a belt; a hub 31; a suction cup 10 opposite to the pulley 1; and a coil 20 arranged in the ring groove of the pulley 1. Wherein, the hub 31 is sleeved on the outer periphery of the compressor main shaft 30,...

Embodiment 2

[0035] In order to improve the frictional force between the flange 2 of the pulley 1 and the elastic body 11, as Figure 7 As shown, the groove 4 is processed on the inner periphery of the flange 2, and the number of the groove 4 is an integer multiple of the elastic body 11. When the elastic member 11 moves to the position of the groove 4 in the third stage, the elastic member 11 and the groove 4 More pronounced deformation occurs in the contact parts, thus increasing friction.

Embodiment 3

[0037] The difference from Example 1 is that, as Figure 8 As shown, in a natural state, the elastic body 11 is in an inwardly concave arc shape, and correspondingly, the inner edge of the pulley 1 protrudes axially from the flange 5 toward the suction cup 10 (will pass through the central hole of the suction cup 10 ). In the same way, the above-mentioned actions in the first to fifth stages are generated.

[0038]In a natural state, the elastic body 11 is separated from the flange 5 . In the first stage of the clutch operation, the coil 20 is energized, the pulley 1 attracts the suction cup 10, causing the elastic body 11 to elongate in the axial direction, the suction cup 10 and the pulley 1 are attracted, the suction cup 10 is driven by the pulley 1, and rotates in the R direction, and the end 11B Located in front of the rotation of the end portion 11A, the spindle 30 has not yet started to rotate due to the load at the moment when the suction cup 10 is activated. In the ...

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Abstract

The invention discloses an electromagnetic clutch which can prevent slipping. The electromagnetic clutch comprises a first rotating member, a second rotating member, a sucker arranged relative to the first rotating member and an excitation coil arranged on the first rotating member and is characterized in that at least three elastomers are connected between the sucker and the second rotating member, one end of every elastomer is connected with the sucker, and the other end of every elastomer is connected with the second rotating member, the first rotating portion is provided with contact portions, and the first rotating member sucks the sucker through the excitation coil, so that when the sucker rotates relative to the second rotating member, the elastomers achieve radial deformation and are in contact with the contact portions of the first rotating member to generate friction which can prevent slipping of the sucker and the first rotating member.

Description

technical field [0001] The present invention relates to clutches, in particular to electromagnetic clutches. Background technique [0002] The clutch is set on the path where the power source transmits the rotational force to the actuator, so as to realize the continuation or stop of the power transmission. The electromagnetic clutch of the compressor can transmit the rotation of the car engine to the transmission on the compressor, which includes a pulley connected to the engine, a suction cup connected to the compressor shaft, and a coil that excites the pulley in the electrified state so that the pulley and the suction cup are attracted together . [0003] When the engine accelerates or the load of the compressor increases, slipping occurs between the pulley and the suction cup. In order to increase the friction between the pulley and the suction cup, the publication number is US2008 / 0041686A1, and the U.S. patent application named Power Transmission Mechanism proposes ...

Claims

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Application Information

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IPC IPC(8): F16D27/105F04B39/00
Inventor 樊灵
Owner SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD
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