JPH10141392A - Driving force transmission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items of clutch mechanism or the like, simplify driving force transmission mechanism, and the like by functionally selecting auxiliary machines to combine them. SOLUTION: Driving force of an engine is transmitted to a driving force intermittent device 20 through a pulley 18. A pair of clutch plates 44, 46 to which a compressor 12 and a viscous heater 14 are connected are arranged with a rotating plate 40 of the pulley 18 placed in between. Passive plates 56 of the clutch plates 44, 46 are opposed with clearances to driving plates 60 of the rotating plate 40. According to the polarity of magnetic force generated by applying a current to the exciting coil 62 provided in the rotating plate 40, a magnet plate 76 or 78 of either one of the clutch plates is attracted, and the passive plate is brought into contact with the driving plate and integrally rotated. Driving force is thereby transmitted to either one of the compressor and viscous heater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving force transmitting device for transmitting a driving force of an engine to auxiliary equipment such as a compressor and a viscous heater of an air conditioner provided in a vehicle, as required.

[0002]

2. Description of the Related Art In the engine room of a vehicle, various auxiliary devices, such as a water pump, a hydraulic pump for power steering, an alternator, and a compressor for an air conditioner, which operate by receiving the driving force of the vehicle engine, are arranged. An endless belt is wound around a pulley connected to the drive shaft of the engine and a pulley provided on each of these accessories, and the driving force of the engine is transmitted through the endless belt. It is attached to be.
In such a driving force transmission method using an endless belt,
It is necessary to arrange a large number of accessories and an idle pulley for winding an endless belt between each accessory and the engine on substantially the same plane around the engine.

[0003] By the way, some auxiliary devices that operate by receiving the driving force of the engine are temporarily used, such as a viscous heater. A viscous heater is used in an air conditioner that performs heating using cooling water for an engine. When a temperature of the cooling water of the engine (engine temperature) does not increase at the time of starting the engine, heating is performed using the cooling water. It is used so that a desired heating capacity is obtained when the heating capacity is sometimes reduced.

In this viscous heater, a viscous fluid is sealed in a friction chamber in which a fixed rotor and a rotating rotor are arranged, and the viscous fluid generates heat by frictional resistance when the rotating rotor is rotated by the driving force of an engine. Thus, a part of the cooling water is heated, and a desired heating capacity can be obtained by using the heated cooling water. For this reason, when the temperature of the engine rises to a predetermined temperature and the desired heating capacity is obtained by the heat of the engine, the operation is stopped to reduce the engine load.

[0005] On the other hand, also in various accessories arranged around the engine, an electromagnetic clutch mechanism or the like is provided for each accessory so that the driving force of the engine is transmitted as necessary. Clutch mechanisms are arranged as many as the number of accessories.

[0006]

However, if a device for interrupting the driving force such as a clutch mechanism is provided for each accessory, the number of accessories is required, and the number of parts is increased. It can also affect weight.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and the number of components such as a clutch mechanism is reduced and the driving force transmitting mechanism is simplified by functionally selecting and combining accessories. It is an object of the invention to propose a driving force transmission device that can perform the driving force transmission.

[0008]

The invention according to claim 1 is
A driving force transmission device for transmitting a driving force of an engine of a vehicle to a plurality of auxiliary devices, the driving plate being configured to transmit the driving force of the engine and rotating, and a driving plate rotatably rotatable integrally with the driving plate. And a passive plate that is provided in pairs with a slight gap with the drive plate, each of which transmits a driving force to a different auxiliary machine, and selectively brings one of the passive plates into close contact with the drive plate. Connecting means for integrally rotating the drive plate and the passive plate brought into close contact therewith.

According to the present invention, the connecting means sucks one of the passive plates, whereby the driving force can be transmitted to the auxiliary machine to which the sucked passive plate is connected. In addition, the other passive plate provided as a pair with the passive plate to be sucked has a slight gap with the drive plate, so that the driving force is intermittent.

As described above, by using a single connecting means, the driving force can be transmitted to and disconnected from the two accessories, and the clutch mechanism for transmitting and disconnecting the driving force for each accessory can be provided. There is no need to provide such a device. Further, since the driving force is transmitted to only one of the passive plates provided in the pair, a large driving force for simultaneously driving the two auxiliary machines does not act. Does not require endurance.

As the auxiliary devices connected to each of the passive plates, those which do not operate simultaneously or those which do not need to operate simultaneously may be selected and combined.
For example, a combination of a compressor of an air conditioner that performs heating using cooling water for the engine and cooling using a refrigerant and a viscous heater that performs auxiliary heating when the temperature of the cooling water for the engine is low is possible.

According to a second aspect of the present invention, the connecting means includes:
An excitation coil for bringing the passive plate into close contact with the drive plate by magnetic force, and a control unit for switching the polarity of the electric power to be applied together with turning on / off the excitation coil.

According to the present invention, an electromagnet which generates a magnetic force by applying electric power to the exciting coil is used as the coupling means, and the driving force is transmitted to one of the passive plates by changing the polarity of the electromagnet. You. When the power is cut off (off), a small gap is provided between both of the passive plates and the driving plate, so that neither driving force is transmitted.

In this way, with a simple structure for switching on / off and polarity of the exciting coil, there is no need to provide a clutch mechanism for transmitting and disconnecting the driving force for each auxiliary machine, and any one of the passive plates can be used. The driving force can be transmitted to the auxiliary device to which the.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] An embodiment of the present invention will be described below as a first embodiment with reference to the drawings.
As shown in FIG. 2, a compressor 12 and a viscous heater 14 are mounted on a bracket 16 of an engine 10 of the vehicle.
Attached through. The compressor 12
A driving force interrupting device 20 is provided between the
Is provided. In this driving force interrupting device 20, an endless V-belt 22 is wound around a pulley 18 and a pulley 11 connected to a drive shaft 10A of the engine 10, and transmitted to the pulley 18 via the V-belt 22. The driving force of the engine 10 is transmitted to the compressor 12 or the viscous heater 14. The V belt 22 may be wrapped with another accessory such as an alternator or a power steering pump or an idle pulley.

The compressor 12 includes a condenser, an expansion valve, and an evaporator, and forms a refrigeration cycle of an air conditioner (air conditioner) for cooling and heating the interior of the vehicle. In this air conditioner, when the driving force is transmitted from the engine 10 and the compressor 12 is rotationally driven, the compressed refrigerant is supplied to the evaporator via the condenser and the expansion valve, and is blown into the vehicle interior through the evaporator. Cool the air. Further, the air conditioner is provided with a heater core through which cooling water of the engine 10 is circulated by a water pump (not shown), and a part or all of the air passing through the evaporator is heated by passing through the heater core, and is heated to a predetermined temperature. The air is blown into the vehicle cabin as a temperature conditioned air. This allows
Air conditioning (cooling / heating) of the vehicle interior is performed.

The air conditioner provided with the compressor 12 supplies the cooling water of the engine 10 to the heater core,
A general configuration in which air having a desired temperature is generated by an evaporator and a heater core can be applied, and a detailed description is omitted in the present embodiment.

Cooling water is supplied from the engine 10 to the viscous heater 14, and after the cooling water is received by the viscous heater 14, the cooling water is supplied to the heater core from the viscous heater 14 and used for heating air in the heater core. .

FIG. 3 shows an example of the viscous heater 14. The viscous heater 14 includes a casing 24
A drive shaft 26 is inserted therein and is rotatably arranged. Further, inside the casing 24, a friction chamber 28 is provided.
Is provided, and a heating chamber 30 is provided so as to surround the friction chamber 28. The drive shaft 26 described above is arranged so as to penetrate the friction chamber 28.

A rotary rotor 32 mounted on the drive shaft 26 is arranged in the friction chamber 28. A number of rotating fins 34 are protruded from the rotating rotor 32, and each of the rotating fins 34 is formed in a ring shape and coaxially on both surfaces of the rotating rotor 32 (the surface on the left-right direction in FIG. 3). Have been.

A plurality of fixed fins 36 are provided on the inner surface of the friction chamber 28 so as to face the rotating fins 34. Each of the fixed fins 36 is formed with a predetermined gap therebetween. The rotating fins 34 of the rotating rotor 32 are inserted and arranged between the fixed fins 36 adjacent to each other.

A viscous liquid that generates heat due to frictional resistance is sealed in the friction chamber 28, and the driving shaft 26
Is rotated and the rotating fin 34 and the fixed fin 36 rotate relative to each other, so that the viscous liquid between the rotating fin 34 and the fixed fin 36 generates heat. The heating chamber 30 that covers the friction chamber 28 inside the casing 24 includes:
Cooling water is supplied from one of the pipes 38 provided as a pair, and heat generated in the friction chamber 28 is transferred to the fixed fin 36 and the inner wall of the casing 24 (the friction chamber 2).
The cooling water transmitted to the heating chamber 30 through the partition wall between the heating chamber 8 and the heating chamber 30) is heated. The cooling water heated in the heating chamber 30 is supplied to the heater core from the other end of the pipe 38 and used for heating the vehicle interior.

FIG. 1 shows a schematic configuration of a driving force interrupting device 20 disposed between the compressor 12 and the viscous heater 14. Drive power interrupting device 20
Is provided with a rotating plate 40 forming the pulley 18 around which the V-belt 22 is wound. The drive shaft 26 of the viscous heater 14 has a reduced diameter portion 26 </ b> A formed at a tip end protruding from the casing 24, and a rotating plate 40 is attached to the reduced diameter portion 26 </ b> A via a bearing 42.

On the other hand, each of the compressor 12 side and the viscous heater 14 side with the rotating plate 40
Clutch plates 44 and 46 are arranged. The clutch plate 46 of the viscous heater 14 is attached to the drive shaft 26 of the viscous heater 14 so as to be integrally rotatable, and the clutch plate 44 of the compressor 12 is
It is attached to the tip of a drive shaft 50 projecting from the inside of the casing 48 of the compressor 12, and is configured to rotate integrally with the drive shaft 26 or the drive shaft 50, respectively.

Each of the clutch plates 44 and 46 has a passive plate 56 attached to a base 52 on the shaft center side via a spacer 54 formed of, for example, an elastic body. The passive plate 56 is movable along the axial direction of the drive shafts 26 and 50 by the elastic deformation of the spacer 54.

The passive plates 56 of the clutch plates 44 and 46 are provided with magnet plates 76 and 78 on the outside (the surface opposite to the rotating plate 40), respectively. As shown in FIG. 5A, the magnet plates 76 and 78 are attached with their polarities opposite to each other so that the rotating plate 40 has the same polarity (N poles or S poles). I have. Thus, when an electromagnetic coil 62 to be described later is not energized and does not generate a magnetic force, a small gap is formed between the two passive plates 56 and the rotary plate 40.

The pulleys 18 are arranged in parallel with each other on the axial side (inward in the radial direction) of the outer peripheral portion 58 around which the V-belt 22 is wound, facing the respective passive plates 56 of the clutch plates 44 and 46. The driving plate 60 is provided. An electromagnetic coil 62 is arranged inside the pulley 18 with the driving plate 60 interposed therebetween. This electromagnetic coil 62
The bracket is supported by the casing 24 of the viscous heater 14 and is inserted into a hollow portion between the driving plates 60.

As shown in FIG. 5B, in the driving force interrupting device 20, when a predetermined DC voltage is applied to the electromagnetic coil 62 to excite it, the magnetic pole generated by the polarity of the applied voltage and the magnet One of the driving plates 56 of the clutch plates 44 and 46 is attracted by the elastic force of the spacer 54 in accordance with the direction (polarity) of the magnetic force of the plates 76 and 78, and is brought into contact with the driving plate 60. . As a result, the clutch plate 44 or the clutch plate 46 of the passive plate 56 abutting on the drive plate 60 can rotate integrally with the pulley 18. The other clutch plate 46 or the clutch plate 44 attracted to the drive plate 60 has a predetermined gap between the drive plate 60 of the pulley 18 and the repulsive force acting between the passive plates 56, Relative rotation is possible.

FIG. 4 shows an example of an operation circuit for exciting the electromagnetic coil 62 of the driving force interrupting device 20.
The operation circuit 66 includes two relays 68 and 70, a viscous heater switch 72 whose contacts are opened / closed by turning on / off the viscous heater 14, and a compressor switch 74 whose contacts are opened / closed by turning on / off the compressor 12. It is comprised including.

The relay 68 used in the operation circuit 66
Is provided with a coil 68A, contacts 68B and 68C,
0 has a coil 70A, contacts 70B and 70C,
The contacts 68B, 70B are closed with the coils 68A, 70A de-energized, and the contacts 68C, 70C are the coils 68A,
70A is closed by being excited. Further, a predetermined DC voltage (+ B) is applied to the operation circuit 66 from a battery (not shown) of the vehicle.

In the operation circuit 66, when the viscous heater switch 72 and the compressor switch 74 are turned off (in a state where the internal contacts are opened), the exciting voltage is not applied between the terminals 62A and 62B of the electromagnetic coil 62, and the operation is turned off. Become.

On the other hand, when the compressor switch 74 is off and the viscous heater switch 72 is on, a voltage of a predetermined polarity is applied between the terminals 62A and 62B of the electromagnetic coil 62 (in FIG. 4, a positive voltage is applied to the terminal 62B). Is applied, and the electromagnetic coil 62 is excited. As a result, as shown in FIG.
Attracts the clutch plate 46 to which the viscous heater 14 is connected, and pulls the clutch plate 4
6 will rotate together.

When the compressor switch 74 is turned on, the coils 68A and 70A of the relays 68 and 70 are excited, the contacts 68C and 70C are closed, and the electromagnetic coil 6
The voltage whose polarity has been changed is applied to the terminals 62A and 62B of the second terminal (the positive voltage is applied to the terminal 62A in FIG. 4). Thereby, the electromagnetic coil 62 is connected to the compressor 1
The pulley 18 and the clutch plate 44 rotate integrally by attracting the clutch plate 44 to which the clutch 2 is connected (reverse to FIG. 5B). The viscous heater switch 72 and the compressor switch 74 are turned on / off in conjunction with a switch for operating air conditioning provided in the vehicle.

Next, the operation of the present embodiment will be described. When the engine 10 is started and starts to rotate, the pulley 11 and the pulley 1 of the engine 10 are transmitted to the driving force transmission device 20.
The driving force of the engine 10 is transmitted through a V-belt 22 wound around the driving force
Pulley 18 is rotated.

In the driving force interrupting device 20, when the viscous heater switch 72 and the compressor switch 74 of the operation circuit 66 are turned off, the electromagnetic coil 62 is not excited. Rotary plate 4 provided on pulley 18
0 drive plate 60 and the clutch plate 4
Neither 4 nor 46 transmits the rotational force of the rotating plate 40, and no unnecessary load is applied to the engine 10.

In order to operate the viscous heater 14 of the operation circuit 66, a viscous heater switch 72 is provided.
Is turned on, the terminal 62A of the electromagnetic coil 62,
A voltage of a predetermined polarity is applied during 62B, and the electromagnetic coil 62 is excited by this voltage.

In the driving force interrupting device 20, when the viscous heater switch 72 is turned on and the electromagnetic coil 62 is excited, the clutch plate 46 attached to the driving shaft 26 of the viscous heater 14 is attracted toward the rotating plate 40. As a result, the passive plate 56 of the clutch plate 46 comes into contact with the driving plate 60 of the rotating plate 40, and the clutch plate 46 rotates integrally with the rotating plate 40. Due to the rotation of the clutch plate 46, the driving force of the engine 10 is reduced by the driving shaft 26 of the viscous heater 14.
And the viscous heater 14 operates. Thereby, the cooling water of the engine 10 heated by the viscous heater 14 is supplied to the heater core to heat the vehicle interior.

At this time, the clutch plate 44 attached to the drive shaft 50 of the compressor 12
Since the rotation plate 40 is separated from the rotation plate 40, the rotation of the rotation plate 40 is not transmitted to the compressor 12.

On the other hand, when the compressor switch 74 of the operation circuit 66 is turned on, the coils 68 of the relays 68 and 70 are turned on.
A and 70A are energized to open contacts 68B and 70B and close contacts 68C and 70C. As a result, a voltage whose polarity is changed is applied between the terminals 62A and 62B of the electromagnetic coil 62 as compared with when only the viscous heater switch 72 is turned on.

When the electromagnetic coil 62 is excited by turning on the compressor switch 74, the electromagnetic coil 62
Attracts the clutch plate 44 on the compressor 12 side and causes the passive plate 56 of the clutch plate 44 to abut on the drive plate 60 of the rotating plate 40. Thereby, the rotating plate 40 and the clutch plate 44 rotate integrally, and the driving force of the engine 10 is transmitted to the compressor 12. At this time, since the passive plate 56 of the clutch plate 46 is separated from the driving plate 60 of the rotating plate 40, the rotation of the clutch plate 46 is stopped, and the load caused by the rotation of the compressor 12 and the load caused by the rotation of the viscous heater 14 are applied to the engine 10. Do not hang at the same time.

The compressor 12 cools or heats the interior of the vehicle compartment by a refrigerating cycle. The viscous heater 14 does not increase the engine temperature (engine cooling water) when the engine 10 is started. 10
This operation is performed when the heating capacity for heating the vehicle interior using the cooling water is not sufficiently obtained.

For this reason, when cooling the passenger compartment,
Even when the engine 10 is started, the viscous heater 14 is not turned on because a large heating capacity is not required. Further, when a large heating capacity is required when performing a heating operation at the time of starting the engine 10 or the like, since the outside air temperature and the temperature in the vehicle interior are low, the comfort in the vehicle interior is impaired even if the compressor 12 is not operated. Never be. Conversely, even if the compressor 12 is operated, a large cooling capacity is not required.
Even when the vehicle is substantially stopped, the comfort in the vehicle compartment is not affected.

As described above, the driving force transmission mechanism can be simplified by combining the auxiliary machines which are not substantially operated at the same time or have little influence even if they are not operated at the same time. In addition, for intermittent driving force to the auxiliary equipment provided in parallel, two clutch plates each connected to separate auxiliary equipment are provided for a single pulley for receiving the driving power from the engine 10. By making only one of them connectable to the engine 10, the number of parts can be significantly reduced.

That is, in order to intermittently drive the driving force from the engine 10, it is necessary to separately provide or incorporate a clutch mechanism for each accessory. Also, pulleys and V
A belt is also required.

On the other hand, the driving force interrupting device 20 can transmit and disconnect the driving force to the compressor 12 and the viscous heater 14 with a simple configuration in which a passive plate is added to a substantially one set of clutch mechanisms. . As a result, the number of V-belts, pulleys, and the like for transmitting the driving force to the auxiliary devices arranged around the engine 10 can be reduced, and the area around the engine 10 can be simplified.
It is possible to improve the degree of freedom in arranging accessories, pulleys, V-belts and the like around the engine 10.

The present embodiment is an example of the present invention, and it is needless to say that the present invention does not limit the configuration of the present invention. For example, in the present embodiment, the power is turned on / off and the polarity is switched by separate switches of the viscous heater switch 72 and the compressor switch 74, but the on / off and the polarity are switched using a three-contact switch. It may be performed by a single switch. Further, although the polarity is switched by the two relays 68 and 70, a single relay may be used.

Further, the passive plate 56 of the clutch plates 44 and 46 is brought closer to the drive plate 60 of the rotary plate 40 by the elastic deformation of the spacer 54.
The configuration of the movement of No. 6 is not limited to this. For example, the clutch plates 44 and 46 and the drive shafts 50 and 26 may be engaged by a key formed on one side and a key groove formed on the other side. This allows the passive plate 56 to move integrally with the base 52 toward the drive plate 60, and also allows the clutch plates 44, 46 to move.
Can be rotated integrally with the drive shafts 50 and 26.

The structure of intermittently driving the plurality of (two) auxiliary machines by one set of clutch mechanisms is not limited to the above-described first embodiment. Hereinafter, an example of a configuration in which the driving force of the engine 10 can be transmitted to one of the auxiliary devices provided as a pair will be described as a second embodiment. [Second Embodiment] FIG. 6 shows a driving force interrupting device 80 applied to a second embodiment. The basic configuration of the second embodiment described below is the same as that of the above-described first embodiment, and the same components are denoted by the same reference numerals and description thereof will be omitted.

The driving force transmitting device 80 has a V-belt 2 between the driving shaft 10A of the engine 10 (not shown in FIG. 6).
A pulley 82 around which 2 is wound forms a rotating plate 84. The rotary plate 84 is provided with a single-plate drive plate 86 between the shaft center portion and the outer peripheral portion 58, and the drive plate 86 integrally connects the shaft center portion and the outer peripheral portion. The drive plate 86 has a clutch plate 88 attached to the drive shaft 50 of the compressor 12.
And a clutch plate 90 attached to the drive shaft 26 of the viscous heater 14 are opposed to each other in pairs.

Each of the clutch plates 88 and 90 has a passive plate 92 attached to the base 52 via a spacer 54. The passive plate 92 has a substantially L-shaped cross section, and is disposed with a slight gap from the drive plate 86. In addition, the driving plate 86 is attached to the passive plate 92.
The magnet plates 94 and 96 are attached to the surface on the side opposite to the above.
The magnet plates 94 and 96 are oriented in the opposite direction (polarity) of the magnetic force, similarly to the magnet plates 76 and 78 described above.

On the other hand, the casing 48 of the compressor 12
The electromagnetic coils 100 and 102 are attached to the casing 24 of the viscous heater 14 so as to face the magnet plates 94 and 96 attached to the passive plate 92. Each of the electromagnetic coils 100 and 102 has a magnetic force generated by being energized.
It repels the magnetic force of 96.

That is, when the electromagnetic coils 100 and 102 are energized, magnetic poles of the same polarity as the magnet plates 94 and 96 are generated on the side facing the magnet plates 94 and 96. Thus, the passive plate 92 is pressed against the drive plate 86 together with the magnet plates 94 and 96, and the drive plate 86 and the passive plate 92 are rotated integrally.

As shown in FIG. 7A, a voltage of a predetermined polarity may be directly applied to each of the electromagnetic coils 100 and 102 by operating the compressor switch 74 or the viscous heater switch 72.

As shown in FIG. 7B, a predetermined voltage is applied to the electromagnetic coils 100 and 102 via an operation circuit 98 including a viscous heater switch 72, a compressor switch 74 and a relay 68. You may make it apply. In this operation circuit 98, when the compressor switch 74 is turned off and the viscous heater switch 72 is turned on, the terminals 102A, 102
B, a voltage of a predetermined polarity is applied to the electromagnetic coil 10.
2 and the compressor switch 74 is operated to apply a voltage of a predetermined polarity between the terminals 100A and 100B to excite the electromagnetic coil 100. Thereby, it is possible to prevent the electromagnetic coils 100 and 102 from being simultaneously excited.

The driving force interrupting device 80 thus configured
, The engine 1 transmitted to the single pulley 82
The driving force from zero can be transmitted to one of the compressor 12 or the viscous heater 14. Further, in a simple configuration in which the clutch plates 94 and 96 arranged in pairs are opposed to the single rotating plate 84, the compressor 12
The driving force can be intermittently provided without providing a clutch mechanism corresponding to each of the viscous heater 14 and the viscous heater 14.

[0056]

As described above, according to the present invention, the driving force can be transmitted to the selected auxiliary machine as required without providing a clutch mechanism for each auxiliary machine. This has an excellent effect that the number of parts, weight and cost can be reduced.

Further, according to the present invention, it is possible to select an auxiliary machine for transmitting the driving force with a simple configuration for switching on / off the exciting coil and switching the polarity of the electric power applied to the exciting coil.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a driving force interrupting device to which the present invention is applied.

FIG. 2 is a schematic view showing an example of mounting a viscous heater and a compressor.

FIG. 3 is a schematic configuration diagram illustrating an example of a viscous heater.

FIG. 4 is a switch circuit diagram illustrating an example of control of an exciting coil.

FIGS. 5A and 5B are schematic diagrams showing the operation of the driving force interrupting device, respectively. FIG. 5A shows a non-transmission state of the driving force, and FIG. This shows a possible state.

FIG. 6 is a schematic configuration diagram of a driving force interrupting device applied to a second embodiment.

FIGS. 7A and 7B are switch circuit diagrams for operating an exciting coil.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Engine 12 Compressor (auxiliary machine) 14 Viscous heater (auxiliary machine) 20 Driving force interrupting device (driving force transmission device) 40 Rotation plate (drive plate) 44, 46 Clutch plate (passive play) 62 Electromagnetic coil (connection means) 66 Switch circuit (control means) 72 Viscous heater switch (control means) 74 Compressor switch (control means)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Goro Uchida 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Koichi Kamino 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation ( 72) Inventor Hajime Ito 3-101-3, Shintomi-cho, Kariya-shi, Aichi (72) Inventor Takashi Ban 2-1-1, Toyota-cho, Kariya-shi, Aichi Prefecture Inside Toyota Industries Corporation

Claims (2)

[Claims] 1. A driving force transmitting device for transmitting a driving force of an engine of a vehicle to a plurality of auxiliary devices, wherein the driving plate is configured to rotate by receiving a driving force of the engine, and is rotatable integrally with the driving plate. A passive plate that is provided in pairs with the drive plate interposed therebetween and with a slight gap from the drive plate, each of which transmits a driving force to a different auxiliary device; and one of the passive plates with respect to the drive plate. Connecting means for selectively bringing the drive plate and the passive plate brought into close contact with each other so as to rotate integrally with the drive plate. 2. The coupling means includes: an exciting coil for bringing the passive plate into close contact with the driving plate by magnetic force; and a control means for switching the polarity of the applied power when the exciting coil is turned on and off. The driving force transmission device according to claim 1, wherein