JPS5928158Y2 - cooling fan device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooling fan device, and more specifically, a cooling fan that cools an engine in a so-called chassis dynamometer, which tests nine performance functions in various driving conditions of an automobile at a fixed position. Regarding equipment.

Generally, in performance tests conducted indoors using a chassis dynamometer, a real car is exposed to wind while driving, so a cooling fan is placed in the front of the car to simulate this and blow wind onto the car.

However, in conventional cooling fan devices, the height of the vehicle, especially the height of the engine radiator section, varies depending on the type of vehicle, so as shown in FIG. 5 and FIG. A fan body 3 is placed and fixed on the fan body 3, a flexible duct 4 is attached to the discharge port of the fan body 3, and a discharge port 5 of the flexible duct 4 is mounted on the fan body 3.
The height was adjustable up and down.

That is, near the discharge port 5 of the flexible duct 4,
As shown in FIG. 7, a NAND member 6 equipped with a female screw hole (not shown) in the vertical direction is appropriately attached to the NAND member 6, and is rotatably erected on the pedestal 2 via a bearing 7. A screw punch 8 was screwed into the screw punch 8, and a handle 9 was attached to the upper end of the screw punch 8.

By turning the handle 9 in an appropriate direction, the discharge port 5 of the flexible duct 4 can be opened in the case of a trunk 9a where the radiator section of the engine is high as shown in FIG.
At the same time, in the case of a passenger car 9b with a low engine sigiator part, the exhaust port 5 of the flexible duct 4 is lowered to apply cooling air to various types of automobiles.

However, in the case of a trunk with a high vehicle height, the flexible duct 4 bends as shown in Figure 6, and the cooling air discharged from the outlet 5 is directed diagonally from below to above the vehicle. However, there were problems such as the fact that the wind was different from the wind that a car actually experiences while driving, making it impossible to conduct accurate performance tests.

Therefore, in the case of cars with extremely different vehicle heights, there was a problem in that a separate device suitable for the car had to be manufactured.

In view of the above-mentioned problems, the present invention aims to provide a cooling fan device that can properly perform performance tests on various automobiles with different vehicle heights using one device. One embodiment will be described in detail.

FIG. 1 is a partially cutaway schematic front view of a cooling fan device 10 according to the present invention, and the cooling fan device 10 includes:
It consists of a pedestal 16 supported by a plurality of support screws 13 erected on a base plate 12 which can be fixed to the pole chamber position on the floor via fasteners 11 such as bolts.

Each support screw 13 is inserted into the vicinity of each corner of a pedestal 16 on which a fan main body 15 having a discharge port 14 for discharging cooling air is mounted and fixed.

The pedestal 16 is formed into a hollow box shape, and its upper surface extends horizontally.

A worm gear 18 (see FIGS. 3 and 4) having a female screw hole 17 formed in its shaft center is screwed into each support screw 13.

Each worm gear 18 has an upper wall 19 relative to the pedestal 16.
A thrust bearing 21 is interposed between the lower wall 20 and the lower wall 20, so that the lower wall 20 is rotatably supported.

The worm gear 18 has a discharge port 1 of the fan body 15.
Worm 2 extending in the same direction as the cooling air discharged from 4
2 are in mesh with each other.

Each worm 22 is connected to the fan body 15 as shown in FIG.
0, and each shaft end is rotatably supported by a bearing 23 mounted on the lower wall 20 of the frame 16.

The inner ends of the worms 22 on both sides are respectively connected to both ends of the torque transmission shaft 240 via a compression ring 25.

The worms 22 on both sides are interlocked and connected to a rotational drive mechanism 26 that rotates each worm 22 simultaneously in the same direction in order to horizontally move the gantry 16 up and down.

That is, sprockets 27 are attached to respective pole chambers at opposing outer ends (left end in FIG. 2) of the worms 23 on both sides.

Further, near the middle of the worms 22 on both sides, a drive shaft 28 extending parallel to each worm 22 is rotatably supported via a bearing 29 mounted on the lower wall 20 of the pedestal 16. The drive shaft 28 has the sprockets 2 on both sides.
A sprocket 30 facing the sprocket 7 is mounted with an appropriate distance therebetween.

Between the sprockets 27 on both sides and each sprocket 30 attached to the drive shaft 28, a loop-shaped chain 3 is provided.
1 is the multiplication.

The first drive shaft 28 is rotatably inserted through the side wall of the pedestal 16, and a handle 32 is appropriately attached to its outer end.

Therefore, when the drive shaft 28 is rotated in an appropriate direction by the handle 32, the torque is transmitted to each worm gear 18 via the sprocket 30, the chino 31, the sprocket 27, the worm 22, etc.
8 in the same direction at the same time.

Therefore, while being screwed to the support screw 13, the frame 1
Each worm gear 18 rotatably supported by the worm gear 6 moves up and down along the support screw 13 and moves up and down the pedestal 16 horizontally and integrally.

Therefore, the discharge port 14 of the fan body 15 can be
The position can be adjusted up and down to match the height of the engine's radiator section.

In this embodiment, a case has been described in which one drive shaft 28 of the rotary drive mechanism 26 is manually rotated by the handle 32, but the present invention is not limited to this embodiment, and for example, the drive shaft 28 can be freely rotated in both forward and reverse directions. It is also possible to use a configuration in which an electric box is used for rotation.

In addition, as a means for transmitting the rotation of the drive shaft 28 to the worms 22 on both sides, a configuration using a sprocket 27° 30 and a chino 31 has been described, but a configuration using a timing pulley and a timing belt or a configuration using gears is also described. It is also possible to do this.

Furthermore, the worms 22 on both sides are connected to the outlet 1 of the fan main body 15.
For example, each worm 22 is connected using a torque transmission shaft 24 extending in the same direction as the direction of the cooling air discharged from the worms 22. It is also possible to do so.

In some cases, the base plate 12 may be left as is without being fixed to the floor with fasteners 11 such as bolts.

As described above, the present invention is provided by inserting support screws erected on a base plate into each corner of the pedestal extending horizontally and on which the fan body is placed and fixed, and screwing into each of the support screws. A worm gear is rotatably mounted on the frame via a thrust bearing, and a worm is provided to mesh with each of the worm gears, and each worm is rotatably driven in the same direction at the same time. The outlet of the main body can be adjusted vertically to match the height of the radiator of the engine in various automobiles, and this device allows cooling air with the same wind speed distribution as in actual driving conditions to be delivered to any type of automobile. You can guess.

Therefore, accurate performance tests can be performed at all times.

Furthermore, the pedestal does not move due to the reaction caused by the discharge of cooling air, making it possible to perform performance tests safely.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway schematic front view of the device according to the present invention, and FIG. 2 is a schematic plan view with a partially cutaway pedestal. , FIG. 3 is an enlarged plan view of the main part, FIG. 4 is an enlarged side view of the main part partially cut away along line IV-IV in FIG. 2, and FIGS.
The figures are explanatory front views of the conventional devices used for automobiles with different vehicle heights, and FIG. 7 is an enlarged front view of the main parts of the conventional devices. 12...Base plate, 13...Support screw, 15...Fan body, 16...
- Frame, 18... Worm gear, 21...
...Thrust bearing, 22... Worm.

Claims (1)

[Scope of utility model registration request] Support screws 13 erected on the base plate 12 are inserted into each corner of a pedestal 16 extending horizontally and on which the fan body 15 is mounted and fixed, and a worm gear 18 is screwed into each of the support screws 13. is rotatably mounted on the pedestal 16 via a thrust bearing 21, and a worm 22 is provided to mesh with each of the worm gears 18, and each worm 22 is provided to be rotatably driven in the same direction at the same time. Cooling fan device.