Patent Application
20090159352
This application is a continuation of International Patent Application No. PCT/CN2007/002673, with an international filing date of Sep. 10, 2007, designating the United States, now pending, which is based on China Patent Application No. 200610166571.8, filed Dec. 30, 2006. The contents of these specifications, including any intervening amendments thereto, are incorporated herein by reference.
1. Field of the Invention
The invention relates to a cooling device, and particularly to a cooling device for a vehicle.
2. Description of the Related Art
Nowadays, cooling devices are widely used in vehicles, and fans are of great importance for the cooling devices. However, due to space limitation of vehicles, conventional fans are of small size, which greatly affects heat emission effect.
In view of the above-described problems, it is an objective of the invention to provide a cooling device for a vehicle that features a large-size fan and improved heat emission effect.
To achieve the above objective, in accordance with one aspect of the present invention, there is provided a cooling device for a vehicle, comprising a fan comprising an input end and a power supply, a transmission box having an input end, a universal joint coupling having an input end and a pulley; wherein the input end of the transmission box is connected to the universal joint coupling, the input end of the universal joint coupling is connected to the pulley, the input end of the transmission box is connected to a transmission device via the universal joint coupling, the transmission box operates to change an angle between a movement center line of the power supply and that of the fan.
In another class of this embodiment, the input end of the transmission box is connected to the power supply.
In another class of this embodiment, the input end of the transmission box is connected to a transmission device and then to the power supply.
In another class of this embodiment, the transmission device is a belt transmission device.
In another class of this embodiment, connection between the input end of the transmission box and the transmission device or that between the input end of the transmission box and the power supply is flexible connection.
In another class of this embodiment, connection between the input end of the transmission box and the transmission device or that between the input end of the transmission box and the power supply is implemented by the universal joint coupling.
In another class of this embodiment, an oil pump is connected to an end shaft of the transmission box.
In another class of this embodiment, the universal joint coupling is a cage coupling.
In another class of this embodiment, a bevel gear transmission operating to change the angle between a movement center line of the power supply and that of the fan.
In another class of this embodiment, an output end of the bevel gear transmission is connected to an input shaft of the fan.
In another class of this embodiment, the bevel gear transmission employs circular bevel gear transmission.
In another class of this embodiment, an angle of a bevel gear of the bevel gear transmission is the angle between a movement center line of the power supply and that of the fan.
In another class of this embodiment, the transmission box comprises a housing, at least one stage gear transmission is disposed in the housing, and an output shaft of the gear transmission is connected to the bevel gear transmission.
In another class of this embodiment, a transition gear is connected between two gears of the gear transmission.
In another class of this embodiment, an oil pump is connected to an end shaft of the transmission box.
In another class of this embodiment, an oil pipe is connected between the oil pump and an oil box.
In another class of this embodiment, an output oil pipe of the oil pump is connected to the housing of the transmission box.
The cooling device for a vehicle that features a large-size fan and improved heat emission effect.
The invention is described hereinafter with reference to accompanying drawings, in which:
As shown in
In this embodiment, the fan 1 is a silicon oil fan having a diameter of 600 mm.
The transmission box 2 operates to change an angle between a movement center line of the power supply and that of the fan 1. An output shaft of the transmission box 2 is connected to an input shaft of the fan 1.
Connection between the input end of the transmission box 2 and a transmission device or that between the input end of the transmission box 2 and the power supply is flexible connection implemented by a universal joint coupling 3. Flexible connection enables two connected components to move with respect to each other in a certain range, so as to prevent damage or improper operation of the components.
The universal joint coupling 3 may be a cross-shaft-type coupling, a dual-servo coupling, a three-pin axle coupling, a cage coupling and so on. In this embodiment, a cage coupling is used.
An input end of the transmission box 2 is connected to the universal joint coupling 3, and an input end of the universal joint coupling 3 is connected to the pulley 25. Power of an engine is transmitted to the transmission box 2 via the pulley 25.
An oil box 9 is disposed on the transmission box 2, and an oil drain plugis disposed below the oil box 9. The oil box 9 can be integrated with a housing of the transmission box 2 or independent therefrom.
A bevel gear transmission is disposed in the transmission box 2, and operates to change the angle between a movement center line of the power supply and that of the fan. An output end of the bevel gear transmission is connected to the input shaft of the fan 1. In this embodiment, the bevel gear transmission employs circular bevel gear transmission.
The transmission box 2 comprises a housing, at least one stage gear transmission is disposed in the housing, and an output shaft of the gear transmission 2 is connected to the bevel gear transmission.
The circular bevel gear transmission can be disposed in the transmission box 2, or the transmission box 2 can be connected to the circular bevel gear transmission via at least one stage gear.
As shown in
An input shaft 11 of the gear transmission is supported by a first bearing 8 and a second bearing 12. A driving gear 10 is connected to the input shaft 11, and engaged with a transition gear 13. The transition gear 13 is disposed on a central axis 28. Both ends of the central axis 28 are connected to a supporting bearing 15. A driven gear 16 is disposed on an end shaft 29. Both ends of the end shaft 29 are connected to another supporting bearing 18 and a third bearing 5.
A driving circular bevel gear 4 is disposed on the end shaft 29. The driving circular bevel gear 4 can be integrated with the end shaft 29 or independent therefrom.
As shown in
As shown in
An oil seal 19 is disposed between the output shaft 20 and the housing, and another oil seal 33 is disposed between the input shaft 11 and the housing.
Flexible connection between the input end of the transmission box 2 and the transmission device effectively prevents damage of components. The oil box and the oil pump improve lubrication and heat emission during high-speed operation of the engine. In addition, the circular bevel gear transmission greatly reduce noise during transmission.
This invention is not to be limited to the specific embodiments disclosed herein and modifications for various applications and other embodiments are intended to be included within the scope of the appended claims. While this invention has been described in connection with particular examples thereof, the true scope of the invention should not be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, specification, and following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 200610166571.8 | Dec 2006 | CN | national |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2007/002673 | Sep 2007 | US |
| Child | 12394505 | US |
