KR0175531B1 - Auto-opening and shutting of radiator grill - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a radiator grill opening and closing device.

2. The technical problem the invention seeks to solve

It controls the amount of air flowing into the radiator by automatically controlling the opening and closing degree of the air passage of the radiator grill according to the cooling water temperature.

3. Summary of solution of design

A radiator grill for supplying air to a radiator, the radiator comprising: a cooling water temperature sensor configured to sense a temperature of cooling water; An ECU which receives the cooling water temperature from the cooling water temperature sensor and outputs a grill opening / closing drive signal by comparing with a preset set value; An actuator for turning the grill horizontal stage at a predetermined angle according to the grill opening and closing driving signal received from the ECU; And grill opening and closing means having a grill horizontal stage which is pivoted at a predetermined angle on the grill frame body by the actuator.

4. Important uses of the devise

Control of inflow air into the radiator.

Description

Temperature-sensitive radiator grille automatic switchgear

1 is an exploded perspective view of a typical radiator grill.

2 is a perspective view of a radiator grill portion to which the present invention is applied.

3 is an enlarged structural diagram showing in more detail the bonding state of the radiator grill shown in FIG.

Figure 4 is an explanatory diagram for explaining the operation principle of the automatic radiator grille opening and closing device.

5 is a block diagram of a temperature-sensitive radiator grill automatic switching device according to the present invention.

* Explanation of symbols for main parts of the drawings

40: frame 41a, 41b: boss

50: horizontal grill 51a, 51b: rotating projection

52: guide protrusion 60: vertical movable plate

61: guide officer 70: vertical guide

80: cooling water temperature sensor 90: ECU

100: actuator 110: grill opening and closing means

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator grill of a motor vehicle, and more particularly, to a temperature-sensitive radiator grille automatic switchgear which automatically adjusts a radiator grill of a vehicle in response to a predetermined coolant temperature.

In general, automobiles install radiator grilles to increase heat dissipation efficiency by increasing the contact area with air to radiators for cooling the engine's cooling water. Existing radiator grills are horizontal as shown in FIG. (11) are integrally formed in the grill body 10 at equal intervals, and after inserting the grill body 10 into the front mounting groove 21 of the vehicle 20, the packing 30 and the fixing frame 31 As a result, it is fixed firmly. These radiator grills are always fixed in the open state of the horizontal grid, so in the winter, the engine is overcooled, rather it does not start well or the engine efficiency is lowered, causing side effects.

In order to prevent this phenomenon, in the winter, a cover made of newspaper, cardboard or fabric is attached to the front of the radiator grill to partially block the air passage so that the cold air is not excessively introduced into the engine compartment. For this reason, although the engine is prevented from being overcooled, such a method is not only aesthetically pleasing, but also hassle-free to remove the cover.

In order to solve this problem, a new method is disclosed in Japanese Laid-Open Utility Model Publication No. 57-5321, which is briefly described, which is arranged in parallel so that a plurality of shield plates can be rotated in an operation link installed in front of the radiator. A link and a spring made of a shape memory alloy are installed at the lower end of the operation link, and as a modification thereof, a roller having a shielding screen wound around the front of the radiator frame is rotatable, and one end of the roller is rotated. Coil springs made of shape memory alloys are installed. In addition, the auxiliary spring is installed in the middle portion of the front end of the shielding screen.

The existing device disclosed above is to operate the link or roller as the shape memory alloy spring expands and contracts according to the temperature change of the engine compartment, and rotates or moves the shield plate or shield screen installed on the operation link or roller to the radiator through the radiator. By controlling the degree of opening and closing of the furnace, the amount of air flowing into the radiator is controlled.

Such a device is designed to effectively control the amount of air flowing into the radiator as the shape memory alloy spring is stretched to correspond to the temperature change of the engine compartment, but in the structure, a plurality of shielding plates are individually installed and the shielding plates are driven. The main mechanism is complicated and the risk of failure is high, and if some shields are not operated, there is a drawback that the cooling effect is not uniform throughout the radiator because the amount of air introduced is not maintained at a predetermined amount.

In addition, the modified example is also divided into parts that are not covered by the shielding screen, and the cooling effect of the radiator is not uniform, and the local overheating or overcooling of the radiator occurs, which reduces the durability of the radiator There was a dissolution.

Accordingly, an object of the present invention is to solve the above-mentioned drawbacks, according to the coolant temperature by adjusting the opening and closing degree of the radiator grill automatically through the electronic control unit (hereinafter referred to as ECU) the amount of air suitable for the external environment The present invention provides a temperature-sensitive radiator grille automatic switchgear that can be introduced into a radiator.

An object of the present invention is a radiator grill for supplying air to the radiator, the cooling water temperature sensor for sensing the temperature of the cooling water; An ECU which receives the cooling water temperature from the cooling water temperature sensor and outputs a grill opening / closing driving signal by comparing with a preset set value; An actuator for turning the grill horizontal stage at a predetermined angle according to the grill opening and closing driving signal received from the ECU; And a grill opening / closing means having a grill horizontal stage which is pivoted by a predetermined angle on the grill frame body by the actuator.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a radiator grill portion to which the present invention is applied.

As shown in the drawing, the radiator grill is rotatably fixed to a plurality of grill horizontal stages 50 on the frame 40. The grill horizontal stage 50 is to be rotated integrally, the detailed structure thereof will be described later with reference to FIG. 3 and FIG.

FIG. 3 is an enlarged structural diagram illustrating the coupling state of the radiator grill shown in FIG. 2 in more detail. FIG. 4 is a cross-sectional view taken along the line AA ′ of FIG. to be.

As shown in FIG. 3, rotating projections 51a and 51b protruding from both sides of the grill horizontal stage 50 in the grill frame body 40 are supported and supported by the rotatable bosses 41a and 41b. . The grill horizontal stage 50 has a plurality of equal intervals are arranged in the frame 40, the guide projections 52 on the inner side of the grill horizontal stage 50 spaced apart from the rotation protrusions (51a, 51b) a predetermined interval Are each projected one by one and inserted into the vertical movable plate 60. In the vertical movable plate 60, a guide hole 61 is formed in a substantially horizontal direction, and the guide protrusion 52 is inserted into the vertical movable plate 60. Therefore, the guide protrusion 52 is rotated by the guide hole 61 when the grill horizontal stage 50 is moved. That is, when the vertical movable plate 60 is raised or lowered in the vertical direction, the guide holder 61 regulates the guide protrusion 52 and slides in the direction in which the vertical movable plate 60 moves so that the guide protrusions 52 are formed. As shown by the dashed-dotted line in FIG. 4, the rotation protrusions 51a and 51b are pivoted to the apex. At this time, the vertical movable plate 60 is inserted to allow movement in the vertical direction of the vertical guide piece 70 mounted on the inner side of the frame 40, so that the vertical guide piece 70 is up / down.

On the other hand, when the rotary projections (51a, 51b) is rotated, the guide projections 52 located on the other side with the rotation projections (51a, 51b) apex push the guide hole 61, the vertical movable plate 60 is raised or Will descend. Then, the grill horizontal stage 50 in which the guide protrusion 52 is inserted into the vertical movable plate 60 is integrally rolled at the same angle. The control method of the grill opening and closing means described above will be described in more detail in the operation description.

5 is a block diagram of a temperature-sensitive radiator grill automatic switching device according to the present invention. Now, the driving method of the present invention will be described in detail with reference to FIG. 5 and the aforementioned conductive surfaces.

The automatic switchgear is provided with a cooling water temperature sensor 80 for detecting the cooling water temperature. The coolant temperature detected by the coolant temperature sensor 80 is input to the ECU 90 to generate a grill opening / closing driving signal corresponding to the coolant temperature compared with a preset set value. Normally the cooling temperature during warm-up is about 80 ° C, so ideally the set point is about 70 ° C. If the detected coolant temperature exceeds 70 ° C., the grille opening and closing drive signal is output as a signal to open the grille. If the temperature is below 70 ° C, the grille opening and closing drive signal is a signal to close the grille.

The grill opening and closing drive signal is transmitted to the actuator 100, the actuator 100 operates the grill opening and closing means 11 in accordance with this signal to turn the grill horizontal stage 50, thereby adjusting the air passage to suit the external environment Adjust the amount of air entering the radiator.

The actuator 100 may use a hydraulic or pneumatic actuator that uses hydraulic pressure or pneumatic pressure, and connects the pneumatic / hydraulic actuator with one side rotation protrusion 50a or 51b that protrudes the side of the grill level 50 described above. By rotating the projections, the grill horizontal stage 50 may be rotated to open or close the air passage. At this time, the guide protrusion 52 formed on the inside spaced apart from the rotation protrusion 51a or 51b of the grill horizontal stage 50 moves the guide hole 61 and pushes the vertical movable plate 60 to the inner side of the vertical movable plate 60. A plurality of grill horizontal stage 50 is inserted is pivoted integrally, thereby changing the opening and closing degree of the air passage. Of course, in this case, the vertical movable plate 60 is vertically guided by the vertical guide piece 70.

In addition, a solenoid valve may be used as the actuator 100, and the solenoid valve may be connected to the vertical movable plate 60 to guide the vertical movable plate 60 to the vertical guide piece 70 so as to be moved up and down in the vertical direction. The flats 50 can be integrally pivoted. As described above in the principle diagram above, the side projections of the guide holes 61 push the rotating projections 61 inserted in the guide holes 61 of the vertical movable plate 60, and the horizontal projections 50 rotate the projections. This is done by turning 51a and 51b to the vertex.

Of course, the previously described actuator 100 is connected to the rotary protrusions 51a and 51b as described above to rotate the rotary protrusions 51a and 51b, or is coupled to the vertical movable plate 60 to vertically move the vertical movable plate 60. Up / down in the direction allows the grill horizontal stage 50 to be rotated on the frame 40 with the rotary protrusions 51a and 51b as axes.

As described above, the device closes the air passage when the external environment is cold, thereby closing the air passage, thereby preventing the external cold air from flowing into the interior, thereby protecting the engine in winter. Therefore, it is possible to prevent the engine from freezing and stop the engine, reduce the fuel consumption by shortening the warm-up time of the engine, and reduce the noise generation time due to the shortening of the warm-up time. Has an effect.

Claims (3)

Rotating protrusions 51a and 51b protruding from both sides of the grill horizontal stage 50 in the radiator grill frame body 40 are rotatably supported by the bosses 41a and 41b, respectively, A grill opening / closing means (11) having a grill horizontal stand which is mounted on a manual movable plate (60) on which the guide protrusions (52) protrude one by one to form an inner side of the guide plate (61); An actuator (100) connected to any one of the rotating protrusions protruding from both sides of the grill horizontal opening of the grill opening and closing means (11) to rotate the grill horizontal stage at a predetermined angle with respect to the rotating protrusion; An ECU 90 electrically connected to the actuator 100 and configured to apply a grill opening / closing driving signal; And a cooling water temperature sensor (80) electrically connected to the ECU (90) and mounted on a radiator grill to detect a coolant temperature. The solenoid valve of claim 1, wherein the actuator 100 is connected to the vertical movable plate 60 to raise or lower the vertical movable plate 60 in a vertical direction so as to pivot the grill horizontal stand 50 at a predetermined angle. Temperature-sensitive radiator grille automatic switchgear. The method of claim 1, wherein the ECU (90) sends a signal to the actuator (100) for closing the grill level 50 when the cooling water temperature is less than 70 ℃; When the cooling water temperature is 70 ℃ or more, the temperature-sensitive radiator grill automatic switching device characterized in that for outputting a signal to open the grill horizontal stage.