JPH0622016U - Anti-vibration device for vehicles equipped with air conditioner unit - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the habitability of vehicles equipped with an air conditioner unit driven by a sub-engine. [Structure] A damper 13 is provided on a drive shaft 12 extending from a sub engine 5 which is a drive source of an air conditioner unit 2 to an air conditioner blower 10. When the drive shaft 12 is driven along with the operation of the sub-engine 5, the drive shaft 1
The damper 13 provided in 2 has a vibration suppressing effect. Therefore,
Vibration of the drive shaft 12 when the air conditioner blower 10 is driven by the sub engine 5 is suppressed, and thus vibration of the air conditioner unit 2 is reduced. Therefore, vibration transmitted to the vehicle body is reduced and the comfort of the vehicle is improved. improves.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle equipped with an air conditioner unit in which a sub engine directly connected to an air conditioner compressor and an air conditioner blower are connected via a drive shaft to drive the air conditioner blower with this sub engine. The present invention relates to a vibration control device, and more particularly, to a vibration control device capable of effectively suppressing vibration associated with the operation of a sub-engine to improve the comfortability of a vehicle.

[0002]

[Prior art]

 In order to suppress the vibration of the vehicle and improve the livability, as shown in Japanese Utility Model Laid-Open No. 61-201937, a dynamic damper is provided on the propeller shaft of an automobile to reduce the vibration accompanying the rotation of the propeller shaft. It may be suppressed.

However, in a vehicle equipped with an air conditioner unit in which a compressor for an air conditioner and a blower are driven by a sub engine provided separately from a vehicle engine, such as a large-sized bus, the propeller shaft as in the above-mentioned conventional example. Even if a dynamic damper is installed in the vehicle to reduce the vibration of the vehicle drive system, the vibration associated with the operation of the sub engine cannot be reduced.

[0004]

[Problems to be solved by the device]

 The present invention has been made to solve the above-mentioned problems, and effectively reduces the vibrations associated with the operation of the sub engine that is the drive source of the air conditioner unit, so that the air conditioner unit that uses the sub engine as the drive source is effectively reduced. The challenge is to improve the habitability of vehicles equipped with.

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized in that a damper is provided on a drive shaft from a sub engine, which is a drive source of an air conditioner unit, to a blower for an air conditioner.

[0006]

[Action]

 Since the drive shaft from the sub engine to the air conditioner blower is equipped with a damper, when the drive shaft is driven by the sub engine, the damper installed on the drive shaft suppresses vibration. Therefore, since the vibration of the air conditioner unit due to the operation of the sub engine is suppressed, the vibration transmitted from the air conditioner unit to the vehicle body via the mount rubber etc. is reduced, and the vibration and noise of the entire vehicle are reduced. Comfortability is improved.

[0007]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of an air conditioning unit for a vehicle equipped with an embodiment of an anti-vibration device for a vehicle equipped with a sub engine according to the present invention, and FIG. It is a vibration characteristic figure of a frequency.

In these figures, a sub engine 5 directly connected to an air conditioner compressor 4 is attached to a frame 3 of an air conditioner unit 2 mounted on a frame of a vehicle (not shown) via mounts 1 and 1. Further, the engine pulley 6 provided at the tip of the output shaft (crank shaft) of the sub-engine 5 and the clutch pulley 8 provided at the input shaft of the motor & magnet clutch 7 are interlocked via a belt 9, and the motor & magnet The output shaft of the clutch 7 and the drive shaft 11 of the air conditioner blower 10 are linked via a drive shaft 12.

The motor and magnet clutch 7 functions not only as a normal clutch but also as a motor. Therefore, when the motor & magnet clutch 7 is turned on, the rotation of the sub engine 5 is transmitted to the air conditioner blower 10 via the motor & magnet clutch 7, so that the air conditioner blower 10 is driven at high speed. However, when the drive current is supplied with the magnet clutch 7 turned off, the motor & magnet clutch 7 functions as a motor to drive the air conditioner blower 10 (drive shaft 12) at a low speed.

A damper 13 is attached to the central portion of the drive shaft 12. The damper 13 is composed of a ring-shaped weight externally attached to the drive shaft 12 and a dynamic damper made of an elastic material that couples the weight to the drive shaft 12, and reduces torsional vibration and bending vibration of the drive shaft 12. It When configuring the damper 13, the weight of the weight and the spring constant of the elastic material are tuned while the sub-engine 5 is operated in a steady state, the motor & magnet clutch 7 is turned on, and the air conditioner blower 10 is driven. Is desired to be done. 14 is a heater core, 15 is an evaporator, 16 is a preheater, 17 is a ventilation motor, 18 is a ventilation damper, and 19 is a suction port filter.

In the vibration damping device for a vehicle equipped with a sub-engine configured as described above, when the sub-engine 5 is driven, the compressor 4 for an air conditioner directly connected to the sub-engine 5 is driven. When the sub engine 5 is operating, the input shaft of the motor & magnet clutch 7 is driven via the pulleys 6, 8 and the belt 9, so that the motor & magnet clutch 7 is turned on. Then, the drive shaft 12 is driven to drive the air conditioner blower 10.

When the drive shaft 12 is rotationally driven during driving of the air conditioner blower 10 as described above, the drive shaft 12 vibrates due to rotational fluctuation of the sub-engine 5 or vibration from the outside. That is, if the sub-engine 5 is operated at 1700 rpm and the pulley ratio of both pulleys 6 and 7 that are interlocked via the belt 9 is 7: 3, the drive shaft 12 is driven by the operation of the sub-engine 5. The primary vibration frequency of rotation is 132 Hz. Therefore, the 1/3 octave center frequency of the vibration generated in the drive shaft 12 has a peak in the vicinity of 125 Hz as shown by the broken line in FIG. However, when the damper 13 is attached to the drive shaft 12 as in the present invention, the vibration of the drive shaft 12 is reduced by the vibration suppressing action of the damper 13, and the addition of the damper 13 makes the drive shaft 12 unique. Since the frequency also changes, the vibration level and its peak value decrease as shown by the solid line in the figure, and the vibration transmitted to the vehicle body via the frame 3 and the mount 2 is reduced.

Although the dynamic damper 13 is attached to the center of the drive shaft 12 in the embodiment, the type and mounting position of the damper 13 may be adjusted according to the vibration characteristics of the drive shaft 12. Further, in the embodiment, the reduction mechanism including the pulleys 6 and 8 and the belt 9 and the motor & magnet clutch 7 are interposed between the output shaft of the sub-engine 5 and the input end of the drive shaft 12 to provide a motor & magnet clutch. 7 is turned on / off so that the sub engine 5 and the drive shaft 12 can be connected and disconnected, and the drive shaft 12 can be driven separately from the sub engine 5 by using the motor & magnet clutch 7 as a drive source. However, a speed change mechanism may be used instead of the speed reduction mechanism and the motor & magnet clutch 7.

[0014]

[Effect of device]

 As is apparent from the above description, according to the present invention, the vibration suppressing function of the damper is utilized by providing the damper on the drive shaft from the sub engine provided as the drive source of the air conditioner unit to the blower for the air conditioner. Vibration of the drive shaft is dampened. Therefore, the vibration of the air conditioner unit is effectively suppressed and the vibration transmitted to the vehicle is reduced, so that the comfortability of the vehicle while the air conditioner unit is in operation is improved.

[Brief description of drawings]

FIG. 1 is a plan view of a vehicle air conditioner unit including an embodiment of a vibration isolation device for a vehicle equipped with a sub engine according to the present invention.

FIG. 2 is a vibration characteristic diagram of a drive shaft according to an example and a conventional example at a center frequency of 1/3 octave.

[Explanation of symbols]

 2 Air conditioner unit 4 Air conditioner compressor 5 Sub engine 6 Pulley 7 Motor & magnet clutch 8 Pulley 9 Belt 10 Air conditioner blower 11 Drive shaft 12 Drive shaft 13 Damper

Claims (1)

[Scope of utility model registration request] 1. A vehicle equipped with an air conditioner unit in which a sub engine directly connected to an air conditioner compressor and an air conditioner blower are connected via a drive shaft to drive the air conditioner blower by the sub engine, A vibration preventing device for a vehicle equipped with an air conditioner unit, wherein a damper is provided on a drive shaft from the sub engine to the air conditioner blower.