JPS6010197Y2 - Automobile engine room heat dissipation device - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology belongs to a bonnet hood opening/closing technology that releases hot air in the engine room of an automobile from the rear end of the bonnet hood.

Therefore, in this invention, the bonnet hood that covers the engine room of the automobile is made to be able to be opened and closed by pivoting the front part up and down through a parallel opening/closing link at the rear end. On the other hand, this is a device related to a heat dissipation device that allows hot air inside the engine room to flow and be released.
In particular, the parallel opening/closing link at the rear end is made into a bending link via a hinge, and is linked to an actuator provided on the body via an elevating link whose base end is pivoted to the body, and serves as a lifting fulcrum for the front opening/closing rear part. This invention relates to a heat dissipation device for an engine room of an automobile, which is capable of opening a set gap, and the actuator is electrically connected to an engine room temperature sensor to operate at a set temperature.

<Prior Art> As is well known, the engine of an automobile is generally installed in the front engine room, and as shown in FIG. Cooling and heat is radiated by suction air by the wind A1 or the fan 3, and since the engine room is covered by the bonnet hood 4, the cooling air flows from below to the rear as shown by arrow B. ing.

<Problem to be solved by the invention> Recently, in the automobile 1, a cooling air passage in the engine compartment is designed to prevent the engine 5 from overheating even under the most severe operating conditions. The amount of heat dissipated from the engine 5 varies greatly depending on loading conditions, driving conditions, and environmental conditions, and since the cooling design is designed to overcome these factors, it has the drawback of deteriorating aerodynamic characteristics.

In addition, in cold seasons, etc., there were problems such as overcooling and making it difficult to warm up.

By the way, as shown in FIG. 1, the bonnet hood 4 has a hinge 6 at the rear end and a bending parallel opening/closing link 7, and the front part is closed to the hood striker 8 with a hood lock 9, so that it can be used for maintenance. The front part is raised and lowered via the link 7, and can be opened and closed in a rotating state, so that the front part can be opened wide to increase the amount of intake air in accordance with conditions of extreme heat and high loads. However, because the rear fulcrum is fixed in position, the cooling air cannot escape to the top, and the flow resistance of the cooling air from the engine room 10 is large, resulting in a constant increase in air resistance.

Another disadvantage is that the amount of intake air is set low to suppress an increase in air resistance, resulting in insufficient cooling capacity during extreme heat and high loads.

The purpose of this invention is to solve the problem of hot air dissipation in the engine compartment based on the above-mentioned conventional technology. The fulcrum is raised and lowered to adjust the amount of opening and closing at the rear of the bonnet hood, allowing hot air from the engine room to flow through and dissipate to the rear of the top along with cooling air, while also improving aerodynamic characteristics. It is an object of the present invention to provide an excellent automobile engine room heat dissipation device that is useful in the field of application of heat control technology in industry.

<Means/effects for solving the problems> In order to solve the above-mentioned problems, the structure of this invention, which is based on the above-mentioned claims for utility model registration, is to solve the above-mentioned problems. During operation, both the front and rear portions of the bonnet hood are closed to create a sealed state, and air is sucked in from the front opening with as little air resistance as possible, providing a cooling effect and flowing through the lower part of the engine compartment. If the temperature in the engine compartment exceeds the set temperature due to high load, etc., the actuator detects the high temperature and operates the link, moving the rear end of the bonnet hood to the fulcrum via the parallel opening/closing link. raises the set height to open the set amount, automatically creates a set gap between the cowl top and the cowl top, and increases intake air from the front opening.
It has a cooling effect, allowing hot air to flow from the cowl top along the front windshield glass, and has good aerodynamic properties.When the temperature drops, the bonnet hood is operated in the opposite direction and closed, and the rear part is closed during maintenance. A technical measure has been taken in which the hinge of the parallel opening/closing link is placed in a lower fixed position so that it can be opened and closed easily.

<Embodiment - Configuration> Next, one embodiment of this invention will be described below based on FIGS. 2 and 3.

Note that the same parts as in FIG. 1 will be explained using the same reference numerals.

The engine compartment 10 of the automobile 1 is provided with a radiator grill 2 at the front in the same way as in the conventional case, and directs cooling air in the direction indicated by the arrow A.
The bonnet hood 4, which can be opened and closed at the top, is closed via a hood lock 9 against a hood striker 8 provided at the front end of the body room. 1 in front of cowl top 11
A pair of parallel links 7.7 are pivoted bendably via hinges 6.6 at their upper ends via pins 12.12.

Therefore, it has a rear fulcrum and a front opening/closing type.

The lower end of the parallel opening/closing link 7.7 is connected by a pin 16 to another elevating link 15 which is pivoted by a pin 14 to a bracket 13 whose base end is fixed to the fender panel inch of the body.
．． It is supported by 16.

The other end of the elevating link 15 is connected to a rod 20 connected to a flip-flop mechanism (not shown) of an appropriate electromagnetic switch 19 as an actuator fixed to the chassis frame 17 with bolts 18, 18, . . .
It is linked via 2.

The electromagnetic switch 19 is connected to an ON/OFF control circuit mechanism 24 via a cable pipe 23, and the control circuit mechanism 24 is connected to an appropriate temperature sensor 25 provided in the engine room 10 by a lead wire 26. The electromagnetic switch 19 is connected to conduct an ON signal to the electromagnetic switch 19 when the temperature is higher than the set temperature.

<Embodiment - Effect> In the above-described configuration, when the engine compartment 10 is inspected and maintained while the engine is stopped, when the front end hood lock 9 is released and the bonnet hood 4 is raised, the electromagnetic switch is activated because the engine is stopped. 19 is cut, and the rod 20 is maintained in a lower position by the flip-flop mechanism, so the sub-link 21 and the elevating link 15 are fixed. Therefore, as in the past, the parallel link 7.7 is connected to the hinge 6. .6 serves as a fixed fulcrum, and the front portion of the bonnet hood 4 is opened by pivoting around the fixed fulcrum of the parallel link 7.7.

During driving, the temperature in the engine room 10 rises due to the operation of the engine 5, but in this invention, the cooling air flow is designed to have little resistance from the viewpoint of aerodynamic characteristics, so if the temperature is below the specified temperature, the temperature in the engine room 10 will rise. Since the bonnet hood 4 is in a sealed state, the cooling air sucked in from the front radiator grille 2 as shown in A flows out from the rear lower side of the engine compartment 10 as shown by arrow B, dissipating the hot air in a predetermined manner. .

Therefore, when the cooler is in operation when parked for a long time at an intersection as described below, the cooling air from the fan 3 cannot be scavenged in the engine room 10 due to the internal pressure, and the same situation occurs when climbing up a slope, and gradually The temperature inside the engine room 10 increases.

Therefore, the temperature sensor 25 detects the hot air at a temperature higher than the set temperature, and the detection signal is input to the control circuit 24 to excite and bias the electromagnetic switch to the ON side.

Then, the switch switched by the excitation uses an appropriate flip-flop mechanism (not shown) to raise the rod 20 to the set height.
4 through the sub-link 21, turning at a set angle and ascending;
As a result, the rear fulcrum part rises, and the rear end of the bonnet hood 4 is moved to the second position via the parallel link 7.7 and the hinge 6.6.
As shown in the figure, the cowl top 17 is opened by a set gap 27.

Therefore, the outside air sucked in from the radiator grille 2 etc. as shown by arrow A scavenges the inside of the engine room 10, gives a cooling effect and flows, and a part of it escapes from the rear lower side as shown by arrow B. A portion escapes through the upper opening gap 27 and flows along the front windshield glass 28, reducing drag and improving aerodynamic properties.

Therefore, the hot air in the engine room 10 disappears, and not only the engine 5 but also the riser part of the carburetor etc. are air-cooled.
The effect of suppressing evaporated emissions also occurs.

When the engine 5 shifts to a low load state or the like, the temperature sensor 25 detects a drop in temperature and transmits the detection signal to the control circuit mechanism 24 to generate an OFF signal to turn the electromagnetic switch 19 off.
is switched to the OFF side, the flip-flop mechanism (not shown) is urged downward, the sub-link 21 is lowered via the rod 20, and the vertical opening/closing link 7.7 and the hinge 6.6 are rotated downward by the lifting link 15. through bonnet hood 4
automatically closes and the fulcrum returns to the parent's position.

It goes without saying that the embodiment of this invention is not limited to the above-mentioned embodiment. For example, the actuator may be controlled by a flip-flop mechanism using an electromagnetic motor and a worm, or
It is also possible to use a vacuum pump that uses intake manifold negative pressure, a temperature sensor can be installed in the radiator in addition to being installed in the engine room, and a parallel link can be connected directly to an actuator. is possible.

<Effects of the invention> As described above, according to this invention, the lower end of the parallel opening/closing link provided at the rear end of the bonnet hood of the automobile is linked to the lifting actuator, and the actuator is electrically connected to the temperature sensor. Basically, when the temperature inside the engine room reaches a set temperature or higher, the actuator operates to automatically open the rear fulcrum of the bonnet hood 4 relative to the cowl top via the parallel opening/closing link. The outside air taken in through the front opening can flow not only from the rear and lower part of the engine room, but also through the opening gap, making it possible to smoothly scavenge hot air from the engine room and cool it. effect is produced.

In addition, since the cooling air flows smoothly in this way, there is less flow resistance in the engine room, and by having a function to cope with high heat loads, the cooling air can be set to a small amount during normal driving, reducing air resistance. This, together with the smooth flow of air from the hood to the windshield glass, has the excellent effect of improving the aerodynamic characteristics of the automobile.

Furthermore, since the bonnet hood can be installed completely automatically,
There is no need for any human operations, and it also has the advantage that it can be opened and closed during maintenance in exactly the same way as conventional types.

In addition, the conventional parallel opening/closing link hinge system can be used as is, and the link and actuator can be attached together with the temperature sensor, so there is no need to change the design.

The temperature-controlled bonnet hood uses a flip-flop mechanism to maintain the lifting/lowering opening/closing state of its rear supporting point within a predetermined temperature range, so it can maintain this state stably and can also be opened to provide support for maintenance and inspection work. There is also the effect that there is nothing to do.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a bonnet hood opening/closing mechanism based on the prior art, Figs. 2 and 3 are explanatory views of one embodiment of this invention, Fig. 2 is an overall schematic sectional view, and Fig. 3 is a portion of the part shown in Fig. 2. Enlarged sectional views 1...Car, 10...Engine room, 7...Parallel opening/closing link, 4...Bonnet hood, 6...・Hinge, 19...
...Actuator, 25...Temperature sensor, 1
5... Lifting link.

Claims (1)

[Scope of utility model registration request] A heat dissipation device installed on a bonnet hood whose front part can be opened and closed up and down using a parallel opening/closing link at the upper rear end of the engine room as a fulcrum, the upper end of which is pivoted on the bonnet hood and has a hinge so that it can be bent. The lower end of the parallel opening/closing link is pivotally supported by an elevating link, and the proximal end of the elevating link is supported by a pin on the body, and the tip is linked to an actuator installed on the body so that the fulcrum of the bonnet hood is 1. A heat dissipation device for an engine room of an automobile, characterized in that it can be raised and lowered and opened and closed, and the actuator is electrically connected to a temperature sensor.