CN-224233531-U - Magnetic transmission electromagnetic clutch for air conditioner of automobile

Abstract

The electromagnetic clutch of the magnetic transmission automobile air conditioner is composed of a belt pulley, a driven disc, a compressor shaft, a compressor shell, a bearing and a coil; the working principle is that the internal combustion engine drives the belt pulley to rotate, when the air conditioner is not needed to work, the coil is not electrified, no magnetic force exists between the belt pulley and the driven disc, and the compressor is not in work. When the air conditioner is needed to work, the coil is electrified, and magnetic force which is mutually attracted is formed at the air gap between the magnetic conduction teeth of the rim of the belt pulley, the teeth of the magnetic conduction toothed ring outside the driven disc, the magnetic conduction teeth of the spoke of the belt pulley, the teeth of the magnetic conduction toothed ring inside the driven disc and the magnetic conduction teeth of the hub of the belt pulley, and the magnetic force drives the driven disc to rotate together with the belt pulley, so that the compressor works.

Inventors

• CAI XUEGONG

Assignees

• 蔡学功

Dates

Publication Date

20260512

Application Date

20250528

Claims (4)

1. 1. A magnetic transmission electromagnetic clutch for an automobile air conditioner is characterized by comprising a belt pulley, a driven disc, a magnetic conduction toothed ring in the driven disc, a magnetic conduction toothed ring outside the driven disc, a compressor shaft, a compressor shell, a bearing, a coil shell, a coil support, a spring and a coil, wherein the belt pulley comprises a hub, spokes and a rim, an annular cavity is formed between the hub and the rim, two discontinuous rings of grooves for magnetic isolation are formed at the spokes, and a belt pulley magnetic conduction tooth with the same number of circles and uniform distribution is respectively formed at the hub, the spokes and the rim of the end face of the belt pulley, and is respectively called as a belt pulley hub magnetic conduction tooth, a belt pulley spoke magnetic conduction tooth and a belt pulley rim magnetic conduction tooth.
2. 2. The electromagnetic clutch of the magnetic transmission automobile air conditioner according to claim 1, wherein the driven plate is disc-shaped and made of aluminum alloy, an inner magnetic conduction toothed ring and an outer magnetic conduction toothed ring of the driven plate are fixed at the end opposite to the end face of the belt pulley, the inner magnetic conduction toothed ring and the outer magnetic conduction toothed ring of the driven plate are made of low carbon steel, the number of teeth of the inner magnetic conduction toothed ring and the outer magnetic conduction toothed ring of the driven plate are identical to the number of teeth of the magnetic conduction teeth of the belt pulley, and the tooth sections of the inner magnetic conduction toothed ring and the outer magnetic conduction toothed ring of the driven plate are convex so as to increase magnetic conduction area to reduce magnetic resistance and increase magnetic force.
3. 3. The electromagnetic clutch of the magnetic transmission automobile air conditioner according to claim 1, wherein the compressor shaft is stepped, the compressor shaft is provided with a spline and a thread, and the spring is sleeved on the compressor shaft, one end of the spring is propped against the compressor shaft, and the other end of the spring is propped against the driven disc.
4. 4. The electromagnetic clutch of the magnetic transmission automobile air conditioner of claim 1, wherein the coil is arranged in a coil housing, the coil housing is fixed on the compressor housing through a coil bracket, the coil and the coil housing are arranged in an annular cavity of the belt pulley, a certain gap is reserved between the coil and the belt pulley, and the coil housing also serves as a coil iron core.

Description

Magnetic transmission electromagnetic clutch for air conditioner of automobile Technical Field The utility model relates to an electromagnetic clutch of an automobile air conditioner. Background The electromagnetic clutch of the existing automobile air conditioner mainly comprises a belt pulley, a driving assembly, a coil and an iron core. The driving assembly is arranged on the shaft of the compressor through a spline and is close to the friction surface of the belt pulley, and the compressor is driven to rotate by means of friction force between the belt pulley and the friction surface of the driving assembly. When the clutch works, the transmission capacity is reduced due to the abrasion of the friction plate, the working reliability and the service life are lower, and when the main shaft of the air conditioner is locked, the belt connecting the engine, the compressor and the generator gear train is seriously damaged or broken, so that the normal work of the engine gear train is influenced, even the stop operation and failure of the automobile engine are caused, traffic accidents occur, and the safety of the human body is threatened. Disclosure of utility model The utility model aims to provide a magnetic transmission electromagnetic clutch of an automobile air conditioner, which mainly comprises a belt pulley, a driven disc, a compressor shaft and a coil. The magnetic conducting teeth are arranged on the belt pulley and the driven disc, and after the coil is electrified, the magnetic force between the magnetic conducting teeth on the belt pulley and the magnetic conducting teeth on the driven disc enables the belt pulley and the driven disc to be connected together, so that the belt pulley drives the driven disc to synchronously rotate, and the compressor is driven to rotate. Compared with a common electromagnetic clutch in operation, the belt pulley and the driven disc have small friction, higher reliability and simpler structure. The structure of the utility model mainly comprises a belt pulley, a driven disc, a magnetic conduction toothed ring in the driven disc, a magnetic conduction toothed ring outside the driven disc, a compressor shaft, a compressor shell, a bearing, a coil shell, a coil bracket, a spring and a coil. The belt pulley consists of a hub, a spoke and a rim, wherein an annular cavity is formed between the hub and the rim, two discontinuous rings of grooves for magnetic isolation are formed at the spoke, and a belt pulley magnetic conduction tooth which has the same number of turns and is uniformly distributed is respectively arranged at the hub, the spoke and the rim of the end face of the belt pulley and is respectively called as a belt pulley hub magnetic conduction tooth, a belt pulley spoke magnetic conduction tooth and a belt pulley rim magnetic conduction tooth. The driven disc is made of aluminum alloy, an inner magnetic conduction toothed ring and an outer magnetic conduction toothed ring of the driven disc are fixed at the end opposite to the end face of the belt pulley, the inner magnetic conduction toothed ring and the outer magnetic conduction toothed ring of the driven disc are made of low carbon steel, the teeth number of the inner magnetic conduction toothed ring and the outer magnetic conduction toothed ring of the driven disc is identical to that of the magnetic conduction teeth of the belt pulley, the tooth sections of the inner magnetic conduction toothed ring and the outer magnetic conduction toothed ring of the driven disc are convex so as to increase magnetic conduction area and reduce magnetic resistance and increase magnetic force, the teeth of the inner magnetic conduction toothed ring of the driven disc are positioned between the magnetic conduction teeth of the hub of the belt pulley and the magnetic conduction teeth of the spoke of the belt pulley, the teeth of the outer magnetic conduction toothed ring of the driven disc are positioned between the rim magnetic conduction teeth of the belt pulley and the spoke magnetic conduction teeth of the belt pulley, and the inner hole of the driven disc is provided with a spline, and the driven disc is connected with a compressor shaft through the spline. The compressor shaft is stepped, the compressor shaft is provided with a spline and threads, a spring is sleeved on the compressor shaft, one end of the spring is propped against the compressor shaft, the other end of the spring is propped against the driven disc, the spring is used for enabling the end face of the belt pulley to be separated from contact with the driven disc when the compressor is not in operation so as to reduce friction, the coil is arranged in a coil housing, the coil housing is fixed on the compressor housing through a coil bracket, the coil and the coil housing are arranged in an annular cavity of the belt pulley, a certain gap is reserved between the coil housing and the belt pulley, and the coil housing also serves as a coil iron core. Compa