JP2002195303A - Magnetic fan clutch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic fan clutch device having a simple structure and high reliability, manufacturable at a low cost, excellent in acceleration capability and fuel consumption, capable of preventing the intrusion of circumferential dust, metal powder or moisture into a slight gap between a permanent magnet and a conductor and never causing functional trouble due to the dust or moisture by combining a magnet coupling with an electromagnetic clutch. SOLUTION: This device is composed of the electromagnetic clutch mounted to a driving shaft and a magnet coupling gearing with the electromagnetic clutch. The magnet coupling comprises a permanent magnet rotating body with a fan mounted, and a disc having a conductor or hysteresis material facing to the permanent magnet rotating body spaced by the slight gas, and is so structured the permanent magnet rotating body rotates integrally or relatively with the disc by an attracting action working between the permanent magnet and the conductor or the hysteresis material. The magnet coupling is so structured as to be ON/OFF-controlled by the electromagnetic clutch, and has a sealing structure between the disc and the permanent magnet rotating body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic fan clutch device for controlling the rotation of a cooling fan mainly applied to an internal combustion engine for a vehicle, which has low noise, low fuel consumption, and little shock at the beginning of rotation.

[0002]

2. Description of the Related Art As a fan clutch for controlling the rotation of a cooling fan applied to an internal combustion engine for a vehicle, there are a liquid fan clutch, a hydraulically driven fan clutch and the like. As the liquid clutch, a type in which the drive torque of the drive disk is transmitted to the case by oil supplied to the torque transmission chamber is generally used. A drive disk is rotatably provided in the torque transmission chamber by the drive of the drive unit, and oil in the oil sump chamber is supplied to the torque transmission chamber from an outflow adjustment hole formed in the partition plate. 2. Description of the Related Art A coupling device (liquid clutch) having a structure in which oil is returned to an oil reservoir by a circulation path is known (see Japanese Patent Publication No. 63-21048). According to this type of liquid clutch, the drive torque of the drive disk is transmitted to the case by the oil supplied from the oil sump chamber to the torque transmission chamber, and the fan attached to the case rotates, for example, to cool the radiator of an automobile engine. Is performed. Also,
In this type of liquid clutch, the ambient temperature is detected by a bimetal, and when this temperature rises, the opening of the outflow adjustment hole is increased to increase the amount of oil in the torque transmission chamber, the rotational speed of the case is increased, and the fan is raised. It rotates at a speed to increase the cooling effect.

[0003]

However, the liquid fan clutch and the hydraulically driven fan clutch have the following problems. That is, the liquid fan clutch follows the acceleration of the drive disk on the drive side when the engine is restarted or when the engine is rapidly accelerated in a state where a large amount of oil is present in the torque transmission chamber. Due to the oil present, the case (cooling fan) on the driven side also causes a rapid rise in rotation for a short time.
This phenomenon is generally referred to as a "swirling" phenomenon, which causes fan noise and accompanying discomfort, and also reduces fuel consumption.

[0004] In a conventional liquid fan clutch, the "swirling" phenomenon at the time of restarting the engine becomes more conspicuous as the amount of oil in the torque transmission chamber increases. As means for solving this problem, for example, Japanese Patent Publication No. Sho 63-21048 discloses that the oil flowing out of the outflow adjusting hole of the partition plate is once led to the opposite side in the diametrical direction and then supplied to the torque transmission chamber. Things have been suggested.

[0005] In such a structure, when the engine stops when there is almost no oil in the torque transmission chamber and a large amount of oil exists in the oil sump chamber, the oil does not flow into the torque transmission chamber from the oil sump chamber. No "swirling" phenomenon occurs at restart. However, there is no effect in preventing the phenomenon of "swirling" at the time of restart when the engine is stopped in a situation where a large amount of oil is present in the torque transmission chamber, or at the time of rapid acceleration during operation.

On the other hand, in the case of a hydraulically driven fan clutch device, it can be controlled to an arbitrary number of revolutions, but it requires hydraulic equipment such as an oil reservoir tank, hydraulic piping, an oil cooler, and a relief valve, and requires a lot of space. And expensive.

[0007] The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a magnet-type fan clutch device in which the structure is simplified and the cost is reduced by integrating a magnetic coupling and an electromagnetic clutch. It is assumed that.

[0008]

A magnetic fan clutch device according to a first aspect of the present invention is characterized in that a magnet coupling and an electromagnetic clutch are combined, and the fan is mounted on the magnet coupling side. ,
The magnet type fan clutch device according to claim 2 is
A rotatable clutch rotor supported on a drive shaft and incorporating an exciting coil supported externally, and an armature mounted on a disk rotatably supported on the drive shaft via a bearing device. An electromagnetic clutch, a permanent magnet rotating body rotatably supported on the drive shaft via a bearing device, and a fan mounted on the outer periphery of the electromagnetic clutch, and the disk as opposed to the permanent magnet with a slight gap therebetween. It has a hysteresis material or a conductor attached, and is constituted by a permanent magnet rotating body and a magnet coupling having a structure in which the disc rotates integrally by an attraction effect acting between the permanent magnet and the hysteresis material or the conductor. , The magnet coupling is turned on by the electromagnetic clutch
/ Magnetic fan clutch device according to claim 3, wherein an externally supported exciting coil is provided in a clutch rotor supported on a drive shaft, and An electromagnetic clutch composed of an armature held rotatably on the excitation coil side on a driven side housing rotatably supported by a rotor via a bearing device; and a driven shaft integrally formed with the driven side housing. A disk having a hysteresis material or a conductor, which is rotatably supported by a permanent magnet rotating body to which a fan is attached via a bearing device and faces the permanent magnet rotating body with a slight gap therebetween. And a mechanism in which the permanent magnet rotating body and the disk rotate integrally by an attraction function acting between the permanent magnet and the hysteresis material or conductor. The magnetic fan clutch device according to claim 4, wherein the magnetic coupling is controlled to be ON / OFF by the electromagnetic clutch. An excitation coil rotatably supported by the drive shaft via a bearing device and supported by a flange fixed to the outside is provided in the clutch rotor supported by the drive shaft, and the drive shaft is rotated by a bearing device through a bearing device. An electromagnetic clutch composed of an armature held on the driven coil side so as to be able to move back and forth on the driven cylinder that is supported as possible, and a permanent magnet rotating body having a fan mounted on the outer periphery of the driven cylinder. A hysteresis material rotatably supported via a bearing device and opposed to the permanent magnet rotating body with a slight gap therebetween. Is a cylinder type magnet cup in which a conductor is attached to the outer periphery of the driven side cylinder, and the permanent magnet rotating body and the driven side cylinder rotate integrally by an attraction effect acting between the permanent magnet and the hysteresis material or the conductor. The magnet fan clutch device according to claim 5, wherein the magnetic coupling is controlled to be ON / OFF by the electromagnetic clutch. A permanent magnet rotating body is fixed to the driven shaft, and a disk with a fan having a hysteresis material or a conductor facing the permanent magnet rotating body with a slight gap therebetween is rotatably supported on the driven shaft via a bearing device. The permanent magnet is rotated by a suction effect acting between the permanent magnet and the hysteresis material or conductor. A magnetic coupling comprising a mechanism in which the rolling element and the disk with the fan rotate integrally, wherein the electromagnetic coupling is controlled to be ON / OFF by the electromagnetic clutch. The magnet type fan clutch device according to claim 6, wherein an excitation coil fixed to the fixed shaft is provided in a clutch rotor rotatably supported on a non-rotating fixed shaft via a bearing device, and a bearing is mounted on the fixed shaft. An electromagnetic clutch composed of an armature held movably back and forth on the exciting coil side on the back surface of a permanent magnet rotating body rotatably supported via a device, and rotatable via a bearing device on the fixed shaft. A fan is mounted on a disk having a hysteresis material or a conductor which is supported on the rotor and is opposed to the permanent magnet rotor by a slight gap. A magnet coupling is provided, in which the rotating body of the permanent magnet and the disk are integrally rotated by a suction effect acting between the permanent magnet and the hysteresis material or the conductor, and the electromagnetic coupling is ON / OFF controlled by the electromagnetic clutch. It is characterized by the fact that it has a mechanism to be.

The electromagnetic clutch in the above-mentioned magnet type fan clutch device is turned on / off in conjunction with a cooling water temperature, a throttle opening, an engine speed, and an air conditioner switch.
FF control is performed, and this electromagnetic clutch is turned ON / OFF.
The magnet coupling, that is, the fan rotation can be controlled by the OFF control. Further, in the magnetic fan clutch device of the present invention, a thermal ferrite is used in place of the permanent magnet,
An eddy current material (conductor), iron, ferritic stainless steel, or the like is used as the hysteresis material. On the other hand, as the rotary drive source, a system in which the clutch rotor is driven directly by the engine or via a pulley or gear, or a dedicated motor separately provided from the engine can be used.

In the above-mentioned magnet type fan clutch device, the excitation coil of the electromagnetic clutch is energized (O
N) Then, the armature is sucked and attracted to the clutch rotor, and the clutch rotor and the armature and the disk or the driven side housing or cylinder rotate integrally, so that the fan is rotated by the magnetic coupling. At this time, since the magnetic coupling transmits the rotational torque by the magnetic force of the permanent magnet, the magnetic coupling slips and the cushion starts, so that the electromagnetic clutch is turned on.
When entering, the load is small and fan noise can be significantly reduced. Further, when the electromagnetic clutch is turned off, the rotation speed of the magnet coupling is significantly reduced or stopped by the armature moving away from the clutch rotor, so that the fan rotation speed is significantly reduced or stopped.

Further, in a magnetic fan clutch device of the type in which the drive shaft is directly controlled to rotate by an electromagnetic clutch, the drive shaft rotates when the electromagnetic clutch is turned on, and the permanent magnet fixed to the drive shaft rotates. The fan rotates by a magnetic coupling consisting of a disk with a fan rotatably supported coaxially with the body. At this time, the magnetic coupling also starts cushioning, so that the load is small when the electromagnetic clutch is turned ON, and the fan noise can be significantly reduced. Also, set the electromagnetic clutch to OF
In F, the rotation speed of the drive shaft is significantly reduced or stopped, so that the fan rotation speed is significantly reduced or stopped.

As described above, according to the present invention, the electromagnetic clutch is turned on.
By turning on / off the fan rotation can be controlled. Further, the electromagnetic clutch is ON / OFF controlled in conjunction with the cooling water temperature, the throttle opening, the engine speed, and the air conditioner switch, so that the fan rotation can be accurately and stably controlled.

In the case of the above-mentioned magnetic fan clutch device of the present invention, since so-called magnetic energy is used, a disk-type magnetic fan other than the cylinder-type magnetic coupling according to claim 4 is used. In the case of the clutch device, when a surrounding dust (dust, metal powder, etc.), moisture, or the like enters a slight gap between the permanent magnet and the conductor, a functional failure may be caused. Therefore, in the case of the magnet type fan clutch device, it is necessary to take measures to prevent the intrusion of dust (dust, metal powder, and the like) and moisture into the slight gap between the permanent magnet and the conductor.

As a countermeasure against this, the present invention uses the measures described in claims 7 to 12. That is, in the magnetic fan clutch device according to claim 7 of the present invention, a seal is provided between the outer peripheral portion of the permanent magnet rotor and the outer peripheral portion of the permanent magnet rotating body. The magnet type fan clutch device according to claim 8 is characterized by having a labyrinth seal system as the seal structure.
The magnetic fan clutch device according to claim 9 is
The labyrinth seal type sealing structure is formed in a spiral shape, and the magnet type fan clutch device according to claim 10 further comprises a blower mechanism provided between the disk and the permanent magnet rotating body. A magnetic fan clutch device according to claim 11, wherein a guide similar to that of a pump guide blade is obtained between the disk and the permanent magnet rotating body on the surface of the conductor facing the permanent magnet rotating body. 13. A magnet type fan clutch device according to claim 12, further comprising a blower mechanism formed by forming a groove, wherein a blower blade and / or a conductor is provided on an outer peripheral end surface of the disk facing the permanent magnet rotating body. 14. A blower vane is inclined or radially protruded on the entire circumference of the inside of the permanent magnet. The permanent magnet inside the disc facing surface of the rolling body, is characterized in that projecting from the blower blades radially outer peripheral side of the blower vanes and / or permanent magnets. The combination of the permanent magnet and the hysteresis material or the conductor of the magnet coupling in the magnet type fan clutch device according to claims 1 to 12 includes:
It can be composed of an iron plate or a material in which an eddy current material is arranged in front of a hysteresis material and a permanent magnet.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a longitudinal sectional side view showing an embodiment of a magnetic fan clutch device according to claims 1 and 2 of the present invention, and FIG. FIG. 3 is a longitudinal side view showing an embodiment of a magnetic fan clutch device corresponding to claims 1 and 3 of the present invention, and FIG. 4 is a longitudinal sectional view showing an embodiment of the present invention. FIG. 5 is a vertical sectional side view showing one embodiment of a corresponding magnetic fan clutch device, FIG. 5 is a vertical side view showing one embodiment of a magnetic fan clutch device corresponding to claims 1 and 5 of the present invention, and FIG. Claims 1 and 6 of the invention
And FIG. 7 to FIG. 17 show an embodiment of a magnetic fan clutch device corresponding to FIG.
9 illustrates a magnetic fan clutch device corresponding to FIG. 9; FIG. 7 is a longitudinal sectional side view showing an embodiment of the magnetic fan clutch device of the above, and FIGS. 8 to 17 are seal structures in the magnetic fan clutch device of the same. FIGS. 18 to 20 illustrate conductors of a magnet coupling in a magnetic fan clutch device according to claim 10 of the present invention. FIGS. 18 and 19 illustrate the conductors of the magnet coupling. 20, FIG. 20 is a longitudinal sectional side view showing a main part of a magnet type fan clutch device using the conductors shown in FIGS. 18 and 19, and FIGS. 21 to 23 are magnets corresponding to claims 11 and 12 of the present invention. FIG. 21 is a vertical sectional side view of a main part showing the magnet type fan clutch device, and FIG.
2 is a view taken in the direction of arrows AA in FIG. 21, FIG. 23 is a view taken in the direction of arrows BB in FIG. 21, and FIG. 24 is a set of a permanent magnet and a hysteresis material or a conductor of the magnet coupling according to claim 13 of the present invention. It is a schematic sectional drawing which shows an example of alignment, 11, 21, 3
1, 41, 71 are drive shafts, 51 is a driven shaft, 61 is a fixed shaft, 12, 22, 32, 42, 52, 62, 72 are electromagnetic clutches, 13, 23, 33, 43, 53, 63, 73.
Are magnet couplings, 15, 25, 35, 45,
55, 65, 75 are bearing devices, 16, 26, 36, 4
6, 56, 66, and 76 are fans, and 34 is a driven housing.

The magnet type fan clutch device shown in FIG. 1 comprises an electromagnetic clutch 12 and a magnet coupling 13 arranged on one drive shaft 11, and the electromagnetic clutch 12 is integrated with an end of the drive shaft 11. Rotor 12-1 supported by the clutch rotor 12-1
1 and an excitation coil 12-2 which is rotatably fitted to each other via a bearing device 15 and which is fixed to the outside via a bracket 12-3. The excitation coil 1 of the supported disk 13-3
An armature 12-held to be able to move back and forth on the 2-2 side
And 4. The armature 12-4 is externally fitted to the drive shaft 11 and one end thereof is connected to a stay 12-7 fixed to the disc 13-3 by bolts 12-5. It is attached to 12-1 side. In addition, magnet coupling 1
3, a fan 16 is attached to a permanent magnet rotating body 13-1 rotatably supported via a bearing device 15 on the drive side opposite to the electromagnetic clutch 12 on the drive shaft 11, and a fan 16 is mounted on the permanent magnet rotating body 13-. The conductor 13-4 opposed to the permanent magnet 13-2 mounted on the core 1 with a slight gap is
-5, attached to the disk 13-3, and the permanent magnet 1
The permanent magnet rotating body 13-1 and the disk 13-3 are configured to rotate integrally or relative to each other by an attraction effect of an eddy current acting between the 3-2 and the conductor 13-4. 13-6 are radiation fins.

In the magnet type fan clutch device shown in FIG. 1, when the electromagnetic clutch 12 is turned on while the drive shaft 11 is rotating, it is provided in a clutch rotor 12-1 which rotates integrally with the drive shaft 11. The magnet coupling 1 is provided by the excited excitation coil 12-2.
Armature 12 held on disk 13-3 on the third side
-4 is attracted to the clutch rotor 12-1, and the clutch rotor 12-1 and the armature 12-4 and the disk 13-3 rotate integrally. When the disc 13-3 rotates, the conductor 13 attached to the disc 13-3 is rotated.
-4 and the permanent magnet rotating body 13-1 begin to rotate due to the attraction effect acting between the permanent magnet 13-2 of the permanent magnet rotating body 13-1 and the fan 16 starts rotating. At this time, since the magnet coupling 13 starts cushioning, the load when the electromagnetic clutch 12 is turned on is small, and the fan noise can be significantly reduced. When the electromagnetic clutch 12 is turned off, the armature 12-4 is separated from the clutch rotor 12-1 by the spring force of the spring 12-6, so that the rotation speed of the disk 13-3 is significantly reduced or stopped, and the rotation of the fan 16 is stopped. The speed drops significantly or stops. That is, by turning on / off the electromagnetic clutch 12, the rotation of the fan 16 can be controlled. Further, since the electromagnetic clutch 12 can be turned on / off in conjunction with the cooling water temperature, the throttle opening, the engine speed, the air conditioner switch, etc., the fan rotation can be controlled accurately and stably.

The magnetic fan clutch device shown in FIG. 2 has a configuration in which the positions of the electromagnetic clutch 12 and the magnet coupling 13 of the magnetic fan clutch device shown in FIG. An electromagnetic clutch 22 is provided on the drive side of the drive shaft 21 in the same manner as that shown in FIG. And a clutch rotor 22-1 integrally supported on the end of the drive shaft 21, and are rotatably fitted in the clutch rotor 22-1 via a bearing device 25 and via a bracket 22-3. An excitation coil 22-2 fixed to the outside and a disk 23-3 rotatably supported on a drive shaft 21 via a bearing device 25 on the excitation coil 22-2 side. And a Kodo capable retained armature 22-4 Prefecture. Armature 22-4
Is externally fitted to the drive shaft 21 and one end thereof is connected to a bolt 22-
5 is attached to the clutch rotor 22-1 via a spring 22-6 having one end fixed to a stator 22-7 fixed to a disk 23-3. The magnetic coupling 23 is rotatably supported on the drive shaft 21 on the side opposite to the electromagnetic clutch 22 via a bearing device 25 and rotatably supported on the drive shaft 21 via the bearing device 25. The fan 26 is attached to the freely mounted permanent magnet rotator 23-1, and the permanent magnet rotator 23-1
A conductor 23-4 opposed to the permanent magnet 23-2 mounted on the disk 2 with a slight gap therebetween has a core 23-5 therebetween.
3-3, the permanent magnet 23-2 and the conductor 23-
The permanent magnet rotator 23-1 and the disk 23-3 are configured to rotate integrally or relatively to each other by the attraction action of the eddy current acting between the four. 23-6 are radiation fins.

In the magnet type fan clutch device shown in FIG. 2, when the electromagnetic clutch 22 is turned on while the drive shaft 21 is rotating, it is provided in the clutch rotor 22-1 which rotates integrally with the drive shaft 21. The magnet coupling 2 is provided by the excited excitation coil 22-2.
The armature 22 held on the third disk 23-3
-4 are attracted to the clutch rotor 22-1, and the clutch rotor 22-1 and the armature 22-4 and the disk 23-3 rotate integrally. When the disk 23-3 rotates, the conductor 23 attached to the disk 23-3 is rotated.
-4 and the permanent magnet rotator 23-1 start to rotate due to the attraction effect acting between the permanent magnet rotator 23-1 and the permanent magnet 23-2, and the fan 26 starts to rotate. At this time, since the magnet coupling 23 starts cushioning, the load when the electromagnetic clutch 22 is turned ON is small, and the fan noise can be significantly reduced. When the electromagnetic clutch 22 is turned off, the armature 22-4 is separated from the clutch rotor 22-1, and the rotation speed of the disk 23-3 is greatly reduced or stopped, and the rotation speed of the fan 26 is significantly reduced or stopped. I do. That is, also in the case of this magnet type fan clutch device, the electromagnetic clutch 22
By turning ON / OFF the rotation of the fan 26 can be controlled. Further, since the electromagnetic clutch 22 can be turned on / off in conjunction with the cooling water temperature, the throttle opening, the engine speed, the air conditioner switch, and the like, the fan rotation can be accurately and stably controlled.

The magnet type fan clutch device shown in FIG. 3 comprises an electromagnetic clutch 32 provided on the drive shaft 31 side and a magnet coupling 33 provided on the driven shaft side. A clutch rotor 32-1 with a pulley 32-1a supported on the drive shaft 3 provided in the clutch rotor 32-1.
An excitation coil 32-2 attached via a first bracket 32b and a bearing device 3 attached to the clutch rotor 32-1.
Driven side housing 34 rotatably supported via 5
And an armature 32-3 held on the excitation coil 32-2 side so as to be able to move back and forth. The magnet coupling 33 is connected to the driven housing 3.
4, a driven shaft 34- protruding coaxially with the drive shaft 31;
The fan 36 is attached to a permanent magnet rotating body 33-1 rotatably supported on the permanent magnet rotating body 33-1 via a bearing device 35, and is separated from the permanent magnet 33-2 mounted on the permanent magnet rotating body 33-1 with a slight gap. And a disk 33-3 having a conductor or hysteresis material 33-4 opposed to the driven shaft 34-1.
Is attached to a bolt 33-5 at the tip of the permanent magnet 33.
The permanent magnet rotating body 33-1 and the disk 33-3 having the conductor 33-4 are integrally rotated or relatively rotated by the attraction action of the eddy current acting between the conductor -2 and the conductor 33-4. .

In the magnet type fan clutch device shown in FIG. 3, when the electromagnetic clutch 32 is turned on while the clutch rotor 32-1 and the drive shaft 31 are rotating via the pulley 32-1a, the clutch rotor The armature 32-3, which is supported by the driven side housing 34 so as to be able to move back and forth, is attracted by the excitation coil 32-2 provided in the clutch rotor 32-2.
-1 and the clutch rotor 32-1 and the armature 32-3 and the driven side housing 34 rotate integrally. When the driven side housing 34 rotates, the fan rotates by the magnet coupling 33 provided on the driven shaft 34-1 protruding from the driven side housing 34.
That is, when the driven shaft 34-1 rotates, the disk 33-3 attached to the driven shaft and the permanent magnet rotating body 33-
1 is a conductor or hysteresis material 33-4 and a permanent magnet 33
The fan 36 rotates due to the suction effect acting between -2. At this time, since the magnet coupling 33 starts cushioning, the load when the electromagnetic clutch 32 is turned ON is small, and the fan noise can be significantly reduced. When the electromagnetic clutch 32 is turned off, the armature 32-3 is separated from the clutch rotor 32-1 so that the rotation speed of the driven housing 34 is significantly reduced or stopped, and the rotation speed of the fan 36 is significantly reduced or stopped. . Also in the case of this magnet type fan clutch device, the rotation of the fan 36 can be controlled by turning on / off the electromagnetic clutch 32. Further, since the electromagnetic clutch 32 is ON / OFF controlled in conjunction with the cooling water temperature, the throttle opening, the engine rotation speed, and the air conditioner switch, the fan rotation can be accurately and stably controlled.

The magnet type fan clutch device shown in FIG. 4 has the same electromagnetic clutch 4 as described above on one drive shaft 41.
2 and cylinder type magnet coupling 43
The electromagnetic clutch 42 has a clutch rotor 42-1 with a pulley 42-1a supported on a drive shaft 41, and is provided in the clutch rotor 42-1. An exciting coil 42-2 mounted rotatably via a flange 45-3 and fixed to the outside via a shaft 45, and is rotatably supported via a bearing device 45 at an end of the drive shaft 41. Tsuba 43-3a
An armature 42-4 is provided at the flange 43-3a portion of the cylinder 43-3 with the armature 42-4 so as to be able to move back and forth in opposition to the exciting coil 42-2. Further, the magnet coupling 43 is provided on the drive shaft 41 with the bearing device 4.
5. A flanged cylinder 43 that is rotatably supported via 5
A fan 46 is attached to a permanent magnet rotating body 43-1 rotatably supported on the outer periphery of the rotor 3 via a bearing device 45, and a permanent magnet 43-2 mounted on the permanent magnet rotating body 43-1.
A conductor or hysteresis material 43-4 opposed to a small gap is attached to the outer circumference of the flanged cylinder 43-3, and the eddy current acts between the permanent magnet 43-2 and the conductor or hysteresis material 43-4. The permanent magnet rotating body 43-1 and the flanged cylinder 43-
3 are configured to rotate integrally or relatively.

In the magnet type fan clutch device shown in FIG. 4, when the electromagnetic clutch 42 is turned on while the clutch rotor 42-1 and the drive shaft 41 are rotating via the pulley 42-1a, the clutch rotor The armature 42-4 supported by the flanged cylinder 43-3 so as to be able to move back and forth is attracted by the exciting coil 42-2 provided in the inside of the clutch rotor 42-1, and is attracted to the clutch rotor 42-1. -1 and the armature 42-4 and the flanged cylinder 43-3 rotate integrally. When the flanged cylinder 43-3 rotates, the cylinder and the permanent magnet rotating body 43-1 rotate by a suction effect acting between the conductor or the hysteresis material 43-4 and the permanent magnet 43-2, and the fan 46 rotates. At this time, since the magnetic coupling 43 starts cushioning, the load when the electromagnetic clutch 42 is turned ON is small, and the fan noise can be significantly reduced. When the electromagnetic clutch 42 is turned off, the armature 42-4 is separated from the clutch rotor 42-1 so that the rotation speed of the flanged cylinder 43-3 is significantly reduced, or stopped, and the rotation speed of the fan 46 is significantly reduced, or Stop. In the case of this magnet type fan clutch device,
By turning on / off the electromagnetic clutch 42, the rotation of the fan 46 can be controlled. The electromagnetic clutch 42 is turned on / off in conjunction with the cooling water temperature, the throttle opening, the engine speed, and the air conditioner switch.
Since the F control is performed, the rotation of the fan can be controlled accurately and stably. Further, in the case of this magnetic fan clutch device, since the cylinder type has a smaller diameter than the disk type magnetic fan clutch device, the length of the fan blade can be increased and the air volume can be increased. Further, by sliding the permanent magnet rotating body 43-1 and the flanged cylinder 43-3 in the axial direction, the transmission torque can be easily changed, and the fan rotation speed can be arbitrarily controlled.

The magnetic fan clutch device shown in FIG. 5 has a structure in which an electromagnetic clutch 52 and a magnetic coupling 53 are provided on a driven shaft 51. The electromagnetic clutch 52 has a rotating mechanism 52-3 on the driven shaft 51. A clutch rotor 52-1 with a pulley 52-1a supported via
And a solenoid actuator 52-2 for stopping the rotation of the driven shaft 51. On the other hand, the magnet coupling 53 is rotatably supported by the permanent magnet rotating body 53-1 fixed to the driven shaft 51 and the driven shaft 51 via a bearing device 55, and is mounted on the permanent magnet rotating body. Fan 56 having conductor or hysteresis material 53-4 opposed to permanent magnet 53-2 with a slight gap therebetween
The permanent magnet 53-2.
The permanent magnet rotator 53-1 and the disk 53-3 having the conductor 53-4 are configured to rotate integrally or relative to each other by the attraction action of the eddy current acting between the rotor and the conductor or the hysteresis material 53-4. I have.

In the magnet type fan clutch device shown in FIG. 5, when the solenoid type actuator 52-2 is turned off and the electromagnetic clutch 52 is turned on, the pulley 52-
1a through the clutch rotor 52-1 and the driven shaft 51
Is rotated, the permanent magnet rotating body 53-1 fixed to the driven shaft 51 rotates, so that the driven shaft 51
The disk 53-3, which is rotatably supported via a bearing device 55, rotates by a suction effect acting between the conductor or hysteresis material 53-4 and the permanent magnet 53-2, and the fan 56 rotates. At this time, since the magnet coupling 53 starts cushioning in the same manner as described above, the load when the electromagnetic clutch 52 is turned ON is small, and the fan noise can be significantly reduced. When the solenoid type actuator 52-2 of the electromagnetic clutch 52 is turned on and the rotation of the driven shaft 51 is stopped, the rotation speed of the permanent magnet rotating body 53-1 is significantly reduced or stopped, and the rotation speed of the fan 56 is greatly reduced. Or stop. Therefore,
Also in the present embodiment, the electromagnetic clutch 52 is turned on / off.
By doing so, the rotation of the fan 56 can be controlled.

The magnetic fan clutch device shown in FIG. 6 has a structure in which an electromagnetic clutch 62 and a magnetic coupling 63 are provided on a non-rotating fixed shaft 61, and the electromagnetic clutch 62 has a bearing device 65 mounted on the fixed shaft 61. , A clutch rotor 62-1 with a pulley 62-1a rotatably supported via a shaft, an excitation coil 62-2 fitted in the clutch rotor and fixed to a fixed shaft 61 via a stay 62-3. And an armature 62-4 held movably back and forth on the exciting coil 62-2 side of a permanent magnet rotating body 63-1 rotatably supported on the fixed shaft 61 via a bearing device 65. I have. On the other hand, the magnet coupling 63 has a bearing device 6 attached to the end of the fixed shaft 61.
5, a permanent magnet rotating body 63- rotatably supported via
1 and a conductor or hysteresis member 63-4 rotatably supported by the fixed shaft 61 via a bearing device 65 and opposed to the permanent magnet 63-2 mounted on the permanent magnet rotating body with a slight gap therebetween. Disk 6 with fan 66 having
3-3, and the permanent magnet rotating body 63-1 and the conductor 63- 3 are attracted by an eddy current acting between the permanent magnet 63-2 and the conductor or the hysteresis material 63-4.
4 is configured to rotate integrally or relatively.

In the magnetic fan clutch device shown in FIG. 6, the electromagnetic clutch 62 is rotated while the clutch rotor 62-1 is rotating via the pulley 62-1a.
Is turned on, the armature 62-4 held by the permanent magnet rotating body 63-1 so as to be able to move back and forth is attracted by the exciting coil 62-2 fixed to the fixed shaft 61, and is attracted to the clutch rotor 62-1. , The clutch rotor 62-1
And the permanent magnet rotating body 63-1 rotate integrally. When the permanent magnet rotating body 63-1 rotates, the permanent magnet rotating body 6
The disk 63-3 is rotated by the attraction action of the eddy current acting between the permanent magnet 63-2 of 3-1 and the conductor or the hysteresis material 63-4 attached to the disk 63-3, and the fan 66 is rotated.
Rotates. At this time, since the magnet coupling 63 starts cushioning in the same manner as described above, the load when the electromagnetic clutch 62 is turned on is small, and the fan noise can be significantly reduced. Also, set the electromagnetic clutch 62 to OF
F, the armature 62-4 becomes the clutch rotor 62
By moving away from -1, the rotation speed of the disk 63-3 is greatly reduced or stopped, and the rotation speed of the fan 66 is significantly reduced or stopped. That is, also in the case of the magnet type fan clutch device, the rotation of the fan 66 can be controlled by turning on / off the electromagnetic clutch 62 as in the above-described case. The electromagnetic clutch 62 is turned on / off in conjunction with the cooling water temperature, the throttle opening, the engine speed, and the air conditioner switch.
Since the F control is performed, the rotation of the fan can be controlled accurately and stably.

The magnetic fan clutch device shown in FIG. 7 has the same configuration as that shown in FIG. 1 except that a seal structure is provided on the outer peripheral edge of the disk and the permanent magnet rotating body.
That is, the electromagnetic clutch 7 arranged on one drive shaft 71
2 and a magnetic coupling 73, and the electromagnetic clutch 72 includes a clutch rotor 72-1 integrally supported at an end of the drive shaft 1, and a clutch rotor 7-1.
An excitation coil 72-2 fitted rotatably with each other in a bearing 2-1 via a bearing device 75 and fixed to the outside via a bracket 72-3, and a drive shaft 71 rotated through a bearing device 75. Armature 7 held so as to be able to move back and forth on the side of the exciting coil 72-2 of the disk 73-3 which is supported as possible.
2-4. The armature 72-4 is externally fitted to the drive shaft 1 and one end thereof is connected to a stay 72-7 fixed to the disk 73-3 by bolts 72-5. 72-1
Mounted on the side. The magnet coupling 73 has a fan 76 mounted on a permanent magnet rotating body 73-1 rotatably supported via a bearing device 75 on a drive side opposite to the electromagnetic clutch 72 on the drive shaft 71. The conductor 73-4 facing the permanent magnet 73-2 mounted on the magnet rotating body 73-1 with a slight gap therebetween is the core 7
The permanent magnet rotating body 73-1 and the disk 73- are attached to the disk 73-3 via 3-5, and are attracted by an eddy current acting between the permanent magnet 73-2 and the conductor 73-4. 3
Are integrally rotated or relatively rotated. A protrusion 73-5 is provided on the outer peripheral edge of the disk 73-3 so as to overlap with the outer peripheral edge of the permanent magnet rotating body 73-1.
3 and a seal structure is provided on the outer peripheral edge of the permanent magnet rotating body 73-1. 73-6 is a radiation fin.

The seal structure is not limited to the structure shown in FIG. 7, but may be a structure shown in FIGS. The seal structure shown in FIGS. 8 to 10 exemplifies a structure in which dust (dust, metal powder, and the like), moisture, and the like that have entered a slight gap between the permanent magnet and the conductor are easily discharged. FIG. The exit of the gap between the outer peripheral edge of 73-3 and the outer peripheral edge of the permanent magnet rotator 73-1, that is, the outer peripheral back surface of the permanent magnet rotator 73-1 and the projection 73-5 of the disk 73-3. FIG. 9 shows an example of a seal structure in which the tip of the inner surface is chamfered as shown to form a trumpet, and FIG. 9 shows an example of a labyrinth seal structure in which the inner surface side of a projection 73-5 formed in a disk 73-3 is formed in an arc shape. FIG. 10 shows an example of a seal structure in which a corner of the outer peripheral edge of the permanent magnet rotating body 73-1 is chamfered into a spherical shape. In the case of the seal structure shown in FIGS. 8 to 10 described above, not only is it difficult for dust (dust, metal powder, and the like) and moisture to enter the gap between the disk 73-3 and the permanent magnet rotating body 73-1. Even if dust, moisture, and the like enter the gap between the disk 73-3 and the permanent magnet rotating body 73-1, in the case of the seal structure shown in FIG. 8, the outer peripheral edge of the disk 73-3 and the permanent magnet Since the outlet of the gap between the outer peripheral edges of the rotating body 73-1 is formed in a trumpet shape, dust and moisture that have entered are easily discharged, and in the case of the seal structure shown in FIG.
Since the inner surface side of the projection 73-5 formed in the shape -3 is formed in an arc shape, invading dust, moisture and the like are easily discharged along the arc surface, and the intruding dust also occurs in the seal structure shown in FIG. And water and the like are easily discharged along the spherical surface on the permanent magnet rotating body 73-1 side.

FIGS. 11 to 15 illustrate a labyrinth seal structure. FIG. 11 shows a labyrinth ring 73-3 'provided on the outer peripheral edge of the disk 73-3 and a permanent magnet rotating body 7.
3-1 Disc-shaped fins 73 each having a comb-shaped cross section on the 3-1 side
-3a, 73-1a in a staggered labyrinth seal structure, FIG. 12 shows a straight labyrinth seal in which a disc-shaped fin 73-3b having a comb-shaped cross section is provided on the disk 73-3 side. FIG. 13 shows a direct labyrinth seal structure in which a disk-shaped fin 73-1c having a comb-like cross section is provided on the permanent magnet rotating body 73-1 side. 14 and 15 show examples in which the labyrinth seal structure is provided in a direction perpendicular to the axis. FIG. 14 shows a cross section of the disk 73-3 and the permanent magnet rotating body 73-1 in a direction perpendicular to the axis. A staggered labyrinth seal structure in which toothed cylindrical fins 73-3d and 73-1d are provided in a meshing manner. FIG. 15 shows a disk 73-3.
A cylindrical fin 73-3 having a comb-shaped cross section in a direction perpendicular to the axis on the side.
e shows a direct-flow labyrinth seal structure provided with e. Incidentally, a disc-shaped fin 73-3b having a comb-shaped cross section is provided.
73-1c and the cylindrical fin 73-3e may be provided in a spiral shape. In the case of the labyrinth seal structure shown in FIGS. 11 to 15, disc-shaped fins 73-1a, 73-3a, and 73-3b each having a comb-like cross section are provided;
Due to the action of the cylindrical fins 73-3d, 73-1d, and 73-3e, dust (dust, metal powder, etc.), moisture, and the like hardly enter the gap between the disk 73-3 and the permanent magnet rotating body 73-1. In the case of the labyrinth seal structure shown in FIG. 12, FIG. 13, and FIG. 15, there is also an effect that the intruded dust, moisture and the like are easily discharged.

The seal structure shown in FIG. 16 has a pump effect by providing a spiral groove 73-1b on the permanent magnet rotating body 73-1 side, and dust in the spiral groove 73-1b is subjected to wind pressure. Is discharged at Note that the spiral groove 73-1b may be provided inside the wrap portion on the disk 73-3 side. FIG.
The seal structure shown in (a), (b) and (c) is a disk 73-3.
The projection 73-5 provided on the side is constituted by a separate cylinder 73-5a, and FIG. 17A shows a cylinder 73-5a having the same thickness.
17A is attached to the outer peripheral edge of the disk 73-3, and FIG. 17B shows a taper 73-5a 'formed so that the inner end surface of the cylindrical body 73-5a on the open end side extends outward. 17 (c) shows a cylindrical body 73-5.
FIG. 17 shows a seal structure in which the open end of FIG.
(D) shows a taper 73-5a 'formed so that the inner end surface of the opening end side of the cylindrical body 73-5a expands outward and is made thinner, and a taper 73-1 is formed on the permanent magnet rotating body 73-1 side.
e 'is formed, and the cylindrical body 7-1e is formed.
3-5a is provided so that the opening end face thereof is located within the range of the taper 73-1e 'provided on the permanent magnet rotating body 73-1 side, and water dropped from the opening end face of the cylindrical body 73-5a is tapered. The seal structures formed so as to fall on the 1e 'surface and fall along the annular groove 73-1e are shown. Also in the case of the seal structure shown in FIG. 17, dust (dust, metal powder, etc.), moisture, and the like enter the gap between the disk 73-3 and the permanent magnet rotating body 73-1 due to the action of the cylinder 73-5a. In addition, there is an effect that dust and moisture that have entered are easily discharged.

The conductor 73-4 shown in FIG. 18 and FIG.
a, 73-4b are guide grooves 73-4a ', 7 on the surface facing the permanent magnet rotating body, in which the same action as the guide blade of the pump is obtained.
3-4b ', each guide groove 73-4a',
The width, depth, number and the like of 73-4b 'are
4, 73-4b are appropriately determined according to the thickness, size, and the like. In the case of the magnet type fan clutch device in which the conductor 73-4 having the guide grooves 73-4a 'and 73-4b' is attached to the disk 73-3, the same operation as that of the guide blade of the pump is performed as shown in FIG. Guide groove 73-4a 'obtained,
When gas flows outward as indicated by the arrow by 73-4b ', dust (dust, metal powder, etc.) and moisture enter the gap between the conductors 73-4a and 73-4b and the permanent magnet 73-2. Not only is it difficult, but temporarily each conductor 73-4
Even if dust (dust, metal powder, etc.), moisture, or the like enters the gap between the a, 73-4b and the permanent magnet 73-2, it is discharged to the outside by the gas flowing outward. Also,
At the same time, the conductor 73-
4a and 73-4b are cooled, and transmission torque reduction is suppressed. 73-6 is a dustproof filter for air sucked from the outside.

The magnet type fan clutch device shown in FIGS. 21 to 23 cools the conductor by means of fins provided on the conductor side and the permanent magnet rotating body side of the magnet coupling, and removes dust and moisture into the gap between the conductor and the permanent magnet. A blow blade 73-3f is provided on the outer peripheral end surface of the disk 73-3 facing the permanent magnet rotating body so as to protrude over the entire circumference, and is provided on the permanent magnet rotating body 73-1 side. The blower vanes 73-1f are radially protruded from the inner surface of the permanent magnet opposite to the disk. The blower blade 73-3f provided on the disk 73-3 side can be provided not only inclining like a guide blade of a pump as shown in FIG. 22, but also radially. Thus, the blowing blade 73-3f and the blowing vane 73-1f provided on the disk 73-3 and the permanent magnet rotating body 73-1 side of the magnet coupling.
Similarly, the magnetic fan clutch device provided with the blower blade 73-3f and the blower vane 73-1 is similar to the above.
By the action of f, the dust filter 73-
6, the gas flows outward and is not only difficult for dust or moisture to enter the gap between the conductor 73-4 and the permanent magnet 73-2, but also for the conductor 73-4 and the permanent magnet 73-2. Even if dust, moisture, or the like intrudes into the gap, it is discharged to the outside by the gas flowing outward. At the same time, the conductor 73-4 is cooled by the gas flowing outward, so that the transmission torque is suppressed from being reduced.

The magnet coupling in the magnet type fan clutch device of the present invention described above is an example in which a permanent magnet and a conductor or a hysteresis material are combined, but a combination of a permanent magnet and a conductor or a hysteresis material is exemplified. For the combination, a combination example shown in FIG. 24 may be adopted. That is, as shown in FIG. 24A, an example in which the hysteresis material 80 and the permanent magnet 90 are combined, as shown in FIG. 24B, the hysteresis material 80 and an eddy current material 81 disposed on the front surface thereof, Permanent magnet 9
As shown in (c), an example of combining with a permanent magnet 90 using a core material 82 made of an iron plate and a conductor 81 disposed on the front surface thereof can be used.

[0035]

As described above, the magnet type fan clutch device according to the present invention has the following effects. (1) Since the rotation of the fan is controlled by turning on / off the electromagnetic clutch, it is possible to prevent the motor from rotating at the time of startup and acceleration. (2) Since the magnetic coupling serves as a cushion start, the load when the electromagnetic clutch is turned ON is small, and the fan noise can be significantly reduced. (3) The electromagnetic clutch is used for cooling water temperature, engine speed,
Since the ON / OFF control is performed in conjunction with the air conditioner switch or the like, the fan rotation can be accurately and stably controlled. (4) Simplification of the structure, downsizing of the device, and cost reduction can be realized. (5) The electromagnetic clutch and the magnetic coupling are high in reliability and safety. (6) Acceleration performance and fuel efficiency can be improved. (7) Since it is possible to prevent intrusion of surrounding dust (dust, metal powder, etc.) and moisture into a slight gap between the permanent magnet and the conductor, there is no possibility of causing a functional failure due to dust or moisture. The function as a magnet type fan clutch is maintained. (8) Since it has a conductor cooling function, transmission torque reduction is suppressed, and a predetermined transmission torque is always maintained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of a magnetic fan clutch device according to claims 1 and 2 of the present invention.

FIG. 2 is a longitudinal sectional side view showing another embodiment of the magnetic fan clutch device shown in FIG.

FIG. 3 is a vertical sectional side view showing one embodiment of a magnetic fan clutch device according to claims 1 and 3 of the present invention.

FIG. 4 is a longitudinal sectional side view showing an embodiment of a magnetic fan clutch device according to claims 1 and 4 of the present invention.

FIG. 5 is a longitudinal sectional side view showing an embodiment of a magnetic fan clutch device according to claims 1 and 5 of the present invention.

FIG. 6 is a longitudinal sectional side view showing an embodiment of a magnetic fan clutch device according to claims 1 and 6 of the present invention.

FIG. 7 is a vertical sectional side view showing an embodiment of a magnetic fan clutch device according to claims 7 to 9 of the present invention.

FIG. 8 is an enlarged sectional view of a main part showing a first embodiment of a seal structure in the device.

FIG. 9 is an enlarged sectional view of a main part showing a second embodiment of the seal structure in the above device.

FIG. 10 is an enlarged sectional view of a main part showing a third embodiment of the seal structure in the above device.

FIG. 11 is an enlarged sectional view of a main part showing a fourth embodiment of the seal structure in the above device.

FIG. 12 is an enlarged sectional view of a main part showing a fifth embodiment of the seal structure in the above device.

FIG. 13 is an enlarged sectional view of a main part showing a sixth embodiment of the seal structure in the above device.

FIG. 14 is an enlarged sectional view of a main part showing a seventh embodiment of the seal structure in the above device.

FIG. 15 is an essential part enlarged sectional view showing an eighth embodiment of the seal structure in the above device.

FIG. 16 is an essential part enlarged sectional view showing a ninth embodiment of a seal structure in the above device.

FIG. 17 is an enlarged cross-sectional view of a principal part showing a tenth embodiment of a seal structure in the above device, in which (a) is a seal structure in which a cylindrical body having the same thickness is attached to an outer peripheral edge of a disk, and (b) Is a seal structure in which the opening end side of the cylindrical body is thinned, (c) is a seal structure in which the open end of the cylindrical body is curved outward,
(D) shows a seal structure in which the opening end side of the cylindrical body is formed in a trumpet shape and an annular concave groove 73-1e is formed on the permanent magnet rotating body side.

FIG. 18 is a front view showing an example of a conductor of a magnetic coupling in a magnetic fan clutch device according to claim 11 of the present invention.

FIG. 19 is a front view showing another example of the conductor of the magnetic coupling of the above.

FIG. 20 is a vertical sectional side view showing a main part of a magnetic fan clutch device using the above conductor.

FIG. 21 is a vertical sectional side view showing a main part of another embodiment of a magnetic coupling in a magnetic fan clutch device according to claims 12 and 13 of the present invention.

FIG. 22 is a view taken in the direction of arrows AA in FIG. 21;

23 is a view as viewed in the direction of arrows BB in FIG. 21.

FIG. 24 is a schematic cross-sectional view showing an example of a combination of a permanent magnet and a hysteresis material or a conductor of a magnet coupling according to claim 13 of the present invention, wherein (a) is an example of a combination of a permanent magnet and a hysteresis material; (B) is a combination example of a permanent magnet and an eddy current material arranged on the front surface of a hysteresis material, and (c) is a combination example of a permanent magnet and an eddy current material arranged on the front surface of an iron plate. Are respectively shown.

[Explanation of symbols]

11, 21, 31, 41, 71 Drive shaft 12, 22, 32, 42, 52, 62, 72 Electromagnetic clutch 13, 23, 33, 43, 53, 63, 73 Magnet coupling 15, 25, 35, 45, 55, 65, 75 Bearing device 16, 26, 36, 46, 56, 66, 76 Fan 34 Follower housing 73-1a, 73-3a, 73-3b, 73-1c Dic fin 73-1d, 73-3d , 73-3e Cylindrical fin 73-1e Annular groove 73-5a Cylindrical body 73-6 Filter

Claims (14)

[Claims] 1. A magnet type fan clutch device, wherein a magnet coupling and an electromagnetic clutch are combined, and a fan is mounted on the magnet coupling side. 2. A clutch rotor supported by a drive shaft and incorporating an externally supported excitation coil, and an armature mounted on a disk rotatably supported on the drive shaft via a bearing device. And a rotatable electromagnetic clutch, which is rotatably supported on the drive shaft via a bearing device, and faces a permanent magnet rotating body having a fan mounted on the outer periphery thereof and a small gap with the permanent magnet. A magnet cup having a hysteresis material or a conductor attached to the disk as described above, and having a mechanism in which the permanent magnet rotating body and the disk rotate integrally by a suction effect acting between the permanent magnet and the hysteresis material or the conductor. Wherein the electromagnetic coupling is turned on / off by the electromagnetic clutch. -Type fan clutch device. 3. An externally supported excitation coil is provided in a clutch rotor supported on a drive shaft, and a driven housing rotatably supported on the clutch rotor via a bearing device is provided on a side of the excitation coil. A permanent magnet rotating body with a fan is rotatably supported via a bearing device on an electromagnetic clutch composed of an armature held so as to be able to move back and forth, and on a driven shaft integrated with the driven side housing. A disk having a hysteresis material or a conductor facing the permanent magnet rotating body with a slight gap therebetween is attached to the driven shaft, and the permanent magnet is rotated by a suction effect acting between the permanent magnet and the hysteresis material or the conductor. A magnetic coupling configured to rotate the body and the disk integrally, and the electromagnetic coupling A magnetic fan clutch device characterized in that the coupling is controlled to be ON / OFF. 4. An excitation coil rotatably supported by a drive shaft via a bearing device and supported by a flange fixed to the outside is provided in a clutch rotor supported by the drive shaft, and the drive shaft is provided with an excitation coil. An electromagnetic clutch composed of a driven cylinder rotatably supported via a bearing device and an armature movably held back and forth on the exciting coil side, and a fan mounted on an outer periphery of the driven cylinder. The permanent magnet rotating body is rotatably supported via a bearing device, and a hysteresis material or a conductor facing the permanent magnet rotating body with a slight gap therebetween is attached to the outer periphery of the driven side cylinder, Cylinder with a mechanism in which the permanent magnet rotor and the driven cylinder rotate integrally by the attraction effect between the magnet and the hysteresis material or conductor A magnetic fan clutch device, comprising: a magnetic coupling, wherein the electromagnetic coupling is ON / OFF controlled by the electromagnetic clutch. 5. A disk with a fan having a hysteresis material or a conductor opposed to the permanent magnet rotating body with a small gap fixed to a permanent magnet rotating body fixed to a driven shaft whose rotation is controlled by an electromagnetic clutch. A magnet cup rotatably supported on a driven shaft via a bearing device, and configured so that the permanent magnet rotating body and the fan-equipped disk rotate integrally by a suction effect acting between the permanent magnet and the hysteresis material or conductor. A magnetic fan clutch device comprising a ring, wherein the electromagnetic coupling is controlled to be turned on / off by the electromagnetic clutch. 6. An exciting coil fixed to the fixed shaft is provided in a clutch rotor rotatably supported by a non-rotating fixed shaft via a bearing device, and the fixed shaft is rotated by a bearing device. An electromagnetic clutch composed of an armature held movably back and forth on the excitation coil side on the back of a permanent magnet rotating body that is rotatably supported, and rotatably supported via a bearing device on the fixed shaft, and A fan is attached to a disk having a hysteresis material or a conductor opposed to the permanent magnet rotating body with a slight gap therebetween, and the fan is attached to the permanent magnet rotating body by a suction effect acting between the permanent magnet and the hysteresis material or the conductor. It is provided with a magnet coupling in which the plate rotates integrally, and the electromagnetic coupling controls ON / OFF of the magnet coupling. A magnet type fan clutch device, characterized in that: 7. A seal structure is provided between an outer peripheral portion of the disk on the outer diameter side of the conductor and an outer peripheral portion of the permanent magnet rotor on the outer diameter side of the permanent magnet. ~ 3,
The magnetic fan clutch device according to any one of claims 5 and 6. 8. The magnetic fan clutch device according to claim 7, wherein said seal structure is of a labyrinth seal type. 9. The magnet type fan clutch device according to claim 8, wherein the labyrinth seal type sealing structure is formed in a spiral shape. 10. A blower mechanism is provided between the disk and the permanent magnet rotating body.
The magnetic fan clutch device according to claim 1. 11. Between the disk and the permanent magnet rotating body,
11. The magnet type fan clutch device according to claim 10, wherein an air blowing mechanism is provided on the surface of the conductor facing the permanent magnet rotating body, the guide groove having the same action as the guide blade of the pump. 12. A blower vane and / or a blower vane is provided on the inner peripheral surface of the conductor on the outer peripheral end surface of the disk facing the permanent magnet rotating body so as to be inclined or radially protruded over the entire circumference. Item 12. The magnet type fan clutch device according to item 10 or 11. 13. A blower vane and / or a blower blade radially protruding from an outer peripheral side of the permanent magnet on the inner side of the permanent magnet on the disk-facing surface of the permanent magnet rotor. Magnetic fan clutch device. 14. A combination of a permanent magnet and a hysteresis material or a conductor of the magnet coupling, wherein the permanent magnet is formed by disposing an eddy current material on the front surface of an iron plate or a hysteresis material. The magnet type fan clutch device according to any one of claims 1 to 12.