JPH0236763B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fan shroud with a radiator shutter for an automobile, in which a radiator shutter is provided on the fan shroud.

[Conventional technology]

Conventional radiator shutters are provided in front of and behind the radiator grille in front of the radiator of an automobile, and are usually screen-type or blade-type shutters. Since conventional radiator shutters have the above-mentioned location and structure, they generally have the following problems.

[Problem to be solved by the invention]

That is, by closing the radiator shutter and reducing the flow of air through the radiator,
This can improve the effectiveness of the heater in winter, etc., but due to the mounting structure, it is not easy to seal the gaps between the left and right, top and bottom members of the radiator shutter, and it is not possible to completely block air flow. First, there is a limit to how effective the heater can be.

Furthermore, engine noise in the engine compartment leaks through the gap surrounding the radiator shutter and is radiated to the front of the vehicle, resulting in incomplete noise isolation, which is unsuitable as a measure against noise outside the vehicle. Particularly in diesel passenger cars, noise is large during idling and acceleration, and leakage of noise from gaps around the shutter cannot be ignored.

On the other hand, since the radiator shutter is installed in front of the radiator, it is directly exposed to the outside and is susceptible to corrosion and damage due to sludge and salt damage.

Furthermore, since it is necessary to block the flow of air over a wide area in front of the radiator, the structure inevitably becomes large, which is a factor that hinders the reduction in weight and size of automobiles.

In order to solve the above-mentioned problems with conventional devices, the present invention eliminates the gap around the radiator shutter to provide complete insulation, making air circulation and noise dissipation more effective when the radiator shutter is closed. The purpose of the present invention is to provide a fan shroud with a radiator shutter that prevents damage caused by sludge and salt damage by incorporating the radiator shutter into a narrow space that is not directly exposed to the outside, and that also contributes to being lighter and more compact. That is.

[Means to solve the problem]

The fan shroud with a radiator shutter of the present invention that meets this purpose can be opened and closed in the internal space of the fan shroud and at a position corresponding to the rear of the radiator and the front of the fan when mounted on a vehicle, and blocks the entire cross section inside the fan shroud when closed. Consists of a radiator shutter attached.

[Effect]

The fan shroud itself functions as the outer frame of the radiator shutter, so there are no gaps around the radiator shutter, making the area around the radiator shutter completely sealed against air flow and engine noise. Become.

〔Example〕

Preferred embodiments of a fan shroud with a radiator shutter according to the present invention will be described below with reference to the drawings.

1 through 4 illustrate an apparatus according to a typical embodiment of the present invention. In the figure, 1 is a fan shroud, which includes a front part 1a consisting of a casing having an essentially rectangular cross section, and a rear part 1b consisting of a casing having an essentially circular cross section.
It consists of an intermediate part 1c located between the front part 1a and the rear part 1b, and whose cross section smoothly decreases from the front part 1a to the rear part 1b. The front end of the front portion 1a is enlarged to facilitate air intake, and as shown in FIG. 7, an automobile radiator R will be located in front of the front end when mounted on an automobile. Rear 1b
When mounted on the vehicle, an engine E is located at the rear of the vehicle, and a fan F is provided inside the rear portion 1b.

The interior space of the front portion 1a of the fan shroud 1 is a narrow rectangular space, and a radiator shutter 2 is installed therein. In the apparatus shown in FIGS. 1 to 4, the fan shroud 1 itself constitutes the outer frame of the radiator shutter 2. In the apparatus shown in FIGS. The radiator shutter 2 is comprised of one type of shutter, such as a rotating blade type shutter, a lattice sliding door type shutter, or a screen roll-up type shutter, and blocks the entire cross section inside the fan shroud when closed. The illustrated example shows a rotating blade type shutter.

In the rotary blade type shutter 2, each of the plurality of shutter blades 3 has a rotation shaft 4 extending vertically or horizontally, and both ends thereof have pivots 5, which function as an outer frame of the radiator shutter 2. It is rotatably supported by a casing at the front portion 1a of the fan shroud 1. The shutter blades 3 are connected to each other by a pin connection through a relay rod 6 extending in a direction perpendicular to the shutter blades 3, and by reciprocating the relay rod 6 in its longitudinal direction, all the shutter blades 3 open and close at the same time. It's becoming like that. 3 shows a state in which the shutter blade 3 is open, and FIG. 4 shows a state in which the shutter blade 3 is closed.

The means for opening and closing the shutter blade 3 is either an automatic actuator such as a vacuum diaphragm, an electromagnetic solenoid, or an electric motor, or a manual means such as a push-pull cable or a push-pull link.
The opening/closing means for the shutter blade 3, such as an actuator, is connected to the relay rod 6 by a link rod 7 that passes through the wall of the intermediate portion 1c of the radiator shroud, so that movement of the actuator is transmitted to the relay rod 6.

The actuator is configured to sense engine water temperature, engine rotation speed, etc., and automatically open the radiator shutter when these values exceed a certain predetermined value. However, the radiator shutter may be opened and closed by sensing operating conditions other than engine water temperature and engine speed.

FIG. 5 shows a fan shroud according to another embodiment of the invention. In the figure, the radiator shutter 2 (not shown) has a shutter case 8 as an outer frame, and when the radiator shutter 2 is attached to the fan shroud 1, the shutter case 8 is placed inside the fan shroud 1.
This is done by inserting and fixing the fan shroud 1 so that its outer surface contacts the inner surface of the front portion 1a of the fan shroud 1. With this configuration, the radiator shutter 2 and the fan shroud 1 can be manufactured and assembled separately, which facilitates design and manufacture. The configuration of other parts is similar to that of the above embodiment, so corresponding parts are shown in FIGS. 1 to 4.
Detailed explanation will be omitted by assigning the same reference numerals as those in the figures.

FIG. 6 shows the configuration of a fan shroud according to yet another embodiment of the present invention. In this embodiment, the front part 1d of the fan shroud 1 is formed separately from the intermediate part 1c and the rear part 1b, and a flange 1e is formed at the joint part of both parts, and the flanges 1e are butted together to form a bolt. By fastening, an integral fan shroud 1 is formed. A radiator shutter 2 (not shown) is installed in advance in the fan shroud casing of the front portion 1d.
By adopting the fastening structure of the divided bodies in this way,
The radiator shutter can be easily attached to the fan shroud. The configuration of other parts is similar to that of the previous embodiment, so the explanation will be omitted.

In the fan shroud with a radiator shutter of the present invention constructed as described above, the fan shroud 1 directly constitutes the outer frame of the radiator shutter 2, or as shown in FIG. 8 is fitted directly into the fan shroud 1, so that when the radiator shutter 2 is closed, the radiator shutter portion ideally shuts off.

For this reason, when the radiator shutter 2 is closed, the flow of air through the radiator shutter 2 is almost completely stopped, which improves the effectiveness of the heater, and also reduces engine noise in the engine room through the radiator shutter. Dissipation to the outside is prevented. When this performance was tested on diesel passengers, the following good results were obtained. That is, during low-speed driving, the engine water temperature rose by several degrees Celsius, and the heater outlet temperature also rose by several degrees Celsius. In addition, when the engine was idling, we measured the noise around the front of the vehicle and found that several
A dB noise reduction was observed.

〔Effect of the invention〕

When using the fan shroud with a radiator shutter of the present invention, the following various effects can be obtained.

In other words, a radiator shutter that can be opened and closed in the interior space of the fan shroud and corresponds to the rear of the radiator and the front of the fan when mounted on a vehicle, and that blocks the entire cross section inside the fan shroud when closed, allows the fan shroud itself to be directly or It can indirectly function as an outer frame of the radiator shutter, thereby eliminating gaps around the radiator shutter. This makes it possible to achieve complete sealing against air flow and engine noise, improve the effectiveness of the heater, and significantly prevent engine noise from radiating outside the vehicle. This measure to prevent dissipation of engine noise is particularly effective in the case of diesel passenger cars, where noise is a drawback.

In addition, the radiator shutter is formed in the fan shroud, which is a narrower space than the front of the radiator, so the radiator shutter can be made lighter and more compact, contributing to lighter and more compact automobiles. Can be done.

[Brief explanation of drawings]

FIG. 1 is a front view of a device according to an embodiment of the fan shroud with a radiator shutter of the present invention, and FIG.
The figure is a side view of the device shown in FIG. 1, FIG. 3 is a sectional view of the device shown in FIG. 1 taken along the - line with the radiator shutter open, and FIG. A sectional view of the shutter in a closed state; FIG. 5 is a sectional view of only the fan shutter of a device according to another embodiment of the present invention;
FIG. 6 is a sectional view showing only the fan shroud of a device according to yet another embodiment of the present invention, and FIG. 7 is a diagram showing the arrangement relationship between the fan shroud with a radiator shutter, the radiator, the fan, and the engine. FIG. 1... Fancillator loud, 1a... Front, 1b
...Rear part, 1c...Middle part, 1d...Front part, 2...
...Radiator shutter, 3...Shutter blade, 8...Shutter case.

Claims (1)

[Scope of Claims] 1. A radiator shutter is installed in the interior space of the fan shroud, and at a position corresponding to the rear of the radiator and the front of the fan when mounted on a vehicle, which can be opened and closed, and which blocks the entire cross section of the inside of the fan shroud when closed. Features a fan shroud with a radiator shutter. 2. A fan shroud with a radiator shutter according to claim 1, wherein the fan shroud itself serves as an outer frame of the radiator shutter. 3. A fan shroud with a radiator shutter according to claim 1, wherein the radiator shutter has a shutter case as an outer frame, and the shutter case is inserted into the fan shroud and attached to the fan shroud. 4. A fan shroud with a radiator shutter according to claim 1, wherein the fan shroud is comprised of a fastening structure of a fan shroud case divided into front and rear parts, and the radiator shutter is mounted in the front fan shroud case. 5. A fan shroud with a radiator shutter according to claim 1, wherein the radiator shutter is any one of a rotating blade type shutter, a lattice sliding door type shutter, and a screen winding type shutter. 6. A fan shroud with a radiator shutter according to claim 1, wherein the radiator shutter opens when the engine cooling water temperature exceeds a specified value. 7. The opening/closing means for the radiator shutter consists of either an automatic actuator consisting of a vacuum diaphragm, an electromagnetic solenoid, or an electric motor, or a manual means consisting of a push-pull cable or a push-pull link. A fan shroud with a radiator shutter according to claim 1.