JPS58180717A - Opening and closing device of radiator shutter - Google Patents

Abstract

PURPOSE:To perform opening and closing action in accordance with cooling water temperature of an engine with simple constitution, by opening and closing a radiator shutter through a shape memory alloy displaced in accordance with the cooling water temperature. CONSTITUTION:A coil spring-shaped shape memory alloy 1 and a normal spring 2 are built in a cylindrical metallic case 10a protruding in a lower tank 9 of a radiator to constitute a temperature sensing part 10. This alloy 1 is set to contract the overall length when temperature of cooling water in the tank becomes 90 deg.C, and the point end of the alloy 1 is connected to a piston member 3. This member 3 is connected to a slide actuator member 8, which opens and closes opening and closing plates of a shutter 5, through a link mechanism 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter opening/closing device that automatically opens and closes according to cooling water temperature and adjusts the amount of heat released from a radiator.

Simply put, this radiator shutter is used to close when the engine cooling water temperature is low, and to open when the temperature rises to allow air to flow and obtain the radiator heat dissipation function. The question of whether or not to provide a dormitory was a major issue. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a mechanism for opening and closing a fugiator shutter that can be more easily opened and closed automatically.

The feature of this @Ming is the use of shape memory alloy for the opening/closing driving force for automatic opening/closing of the Fujiator shutter.

Recently developed shape memory alloys have the property of returning to their original shape as the temperature rises, and the present invention takes advantage of this property to sense the engine coolant at and change its shape. It is intended to be used to open and close the shutter.

FIG. 1 and FIG. 2 show an embodiment of the present invention, and the symbol -151-lO is a temperature sensing part containing a shape memory alloy l;
As shown in No. 11a, a coil mepling-shaped shape memory alloy 1 and a normal Nuf'' ring 2 were installed in the lower tank 9 of the radiator, and the cooling water temperature in the shape memory alloy IFi tank became 9()℃. The shape memory alloy is set so that its total length converges at times.When the temperature drops below 80°C, the shrinkage force of the shape memory alloy decreases, and the energized spring 2 has the force to expand in response to this. The contraction energy of the shape memory alloy 1 and the expansion force of the spring 2 are applied to the piston member 3, so that the shutter 5t-1+ is closed via the ring 4t'' which is the fulcrum of the shaft 4at.

A cylindrical metal case lOa is provided in the temperature sensing part 1 ( ) to be incorporated into the lower tank, and a handle is attached to the tank 9 to solder the entire circumference. Set the shape memory alloy 1 and the nubring 2 to the lower part of the case IUa and secure them appropriately.
It is installed using 0(3).

The V-shape 5 has a plurality of opening/closing plates 6 arranged in parallel and individually rotatable, a fixed shaft and a movable shaft 3t,
Each of the three movable opening/closing plates 6 is supported by the upright piece 7a of the holding frame 7 by the rotation m6a. Further, the opening/closing plate 6 is connected to the slide operating member 8 by a shaft 6b, and the slide operating member 8 is connected to the arrow A by the link mechanism 4.
, by moving in direction B, the opening/closing plate 6 is simultaneously opened,
Close the shutter 5 to open and close it.

However, 14) The engine started running in order to connect the J car.
When starting, the cooling water temperature gradually starts to rise to 9.
At 0°C, the opening/closing plate 6 of the shutter 5 is in a closed state.
is maintained, and at that time, the force of the overcrowded spring 2 to expand overcomes the force of the shape memory alloy 1 to contract. When the cooling water temperature becomes 90° C. or higher, the force that causes the shape memory alloy 1 to contract becomes greater, and the slide operating member 8 moves in the direction B via the link 4. As a result, the shaft 6a of the opening/closing plate 60 of the shutter moves, and the opening/closing plate 6 rotates to allow air to pass through the radiator.This action restores the radiator's original heat dissipation function and lowers the cooling water temperature.

In addition, in the above-mentioned nine parts, the temperature sensing part t is shown as the lower tank of the radiator in the figure, but it may be anywhere as long as the temperature of the cooling water can be sensed. Also, although a link mechanism was used to open and close the shutter, it is also possible to use a fist using a cable. Further, the shutter may be attached to the front or rear of the fugiator body.

As described above, according to the present invention, a shape memory alloy is used for the driving energy for the opening 1v-1 of the radiator shutter, so that the opening and closing operations according to the engine cooling water temperature are extremely simple (in addition, it is easy to open and close externally). There are effects that can be achieved without any electrical or mechanical energy supply.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the present invention, and FIG. 1 is a configuration diagram showing a main part of Fi in cross section.
FIG. 3 is a partially cutaway front view showing the tsuda. 1-Shape memory alloy, 2-Spring, 3-Piston member, 4-Link mechanism, 5-Shutter, 6-Opening/closing plate, 8-Slide operating member, 9-Lower tank, LTL
...m humid area. Representative Patent Attorney Takashi Yobe-7'I Audience 1 Illustration A 0a [Figure 12

Claims (2)

[Claims] (1) Shape memory alloy TT-mounted at the mounting site that senses the engine cooling water temperature, which moves according to the cooling water temperature;
A fugiator shutter opening/closing device characterized in that the displacement of the shape memory alloy is applied to the fugiator shutter opening/closing mechanism via a transmission device WIt. (2) The fugiator shutter includes a plurality of opening/closing plates arranged in parallel and individually rotatable; and the opening/closing mechanism includes an actuating member that commonly applies rotational force to the plurality of opening/closing plates. A fugiator shutter opening/closing device according to claim 1.