JP2011057027A - Cowl cover device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cowl cover device which prevents the deformation and deterioration of a cowl cover by hot air from an engine while avoiding cost increase and increase of mass. <P>SOLUTION: The cowl cover 6, disposed between an engine compartment 1 and a windshield 4 of a cabin 3, comprises an oblique wall part 11 formed diagonally upward toward the engine compartment 1 at a position adjacent to the engine compartment 1 and an upper plate part 12 provided from the upper part of the oblique wall part 11 over the windshield 4 of the cabin 3. Air layer parts 19 are formed by a plurality of spacers 18 of rib shapes between a heat insulation material 13 arranged at the engine compartment 1 side of the oblique wall part 11 of the cowl cover 6 and the oblique wall part 11. Each spacer 18 has a notch groove 20 at the center, so that the air layer parts 19 partitioned by each spacer 18 of the rib shape communicate with each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cowl cover device adjacent to a front compartment that houses an internal combustion engine, an electric motor, a battery, or the like.

  A car body cover of a resin molded product that covers a cowl portion between a bonnet hood that covers a front compartment such as an engine compartment and a windshield that is located on the front side of the passenger compartment is attached to the body of an automobile (for example, a patent Reference 1).

Japanese Patent Laying-Open No. 2006-62472 (first page, FIG. 5)

  Since the cowl cover is exposed in the engine room in a bare state, the cowl cover may be deformed or deteriorated when it receives direct heat from the engine room and a large amount of heat is radiated from the engine.

  Further, the cowl cover is heated by the heat from the engine room, and the heat received by the cowl cover is transferred into the air box, which may increase the temperature of the air vent.

  As a countermeasure for these, turbochargers and the like that emit a large amount of heat from the engine are provided with a heat shield cover, but the cost is increased and the mass is increased.

  The present invention has been made in view of these points, and an object of the present invention is to provide a cowl cover device that can prevent deformation and deterioration of the cowl cover due to hot air from the front compartment while avoiding high cost and mass increase. .

  The invention described in claim 1 is a cowl cover device provided between a front compartment and a windshield of a vehicle compartment, and the cowl cover device is attached to the front compartment at a position adjacent to the front compartment. A slant wall part formed obliquely upward, an upper plate part provided from the upper part of the slant wall part to the windshield of the vehicle compartment, and the upper plate part positioned above the slant wall part A cowl cover having an opening connected to the outside air provided at a corresponding location, a heat insulating material disposed on the front compartment side of the inclined wall portion of the cowl cover, and between the heat insulating material and the inclined wall portion A cowl cover device provided with an air layer portion provided.

  According to a second aspect of the present invention, in the cowl cover device according to the first aspect, the cowl cover includes a lower end support portion and an upper end support portion that support the heat insulating material from the lower end and upper end of the inclined wall portion to the front compartment side. It is formed integrally and the heat insulating material is in contact with and supported between the lower end support portion and the upper end support portion.

  According to a third aspect of the present invention, in the cowl cover device according to the first or second aspect, the opening connected to the outside air is hidden at a position hidden under the hood that protrudes from above the front compartment to above the upper plate portion. It is provided.

  According to the first aspect of the present invention, the heat that has passed through the heat insulating material from the front compartment is diffused and dispersed in the air layer portion provided between the heat insulating material and the inclined wall portion, so that It is possible to avoid the portion from becoming partially hot, and by dispersing the heat, the maximum temperature of the cowl cover can be lowered and heat can be efficiently radiated over the entire surface of the inclined wall portion. In particular, heat from the front compartment rises efficiently due to the inclined wall portion formed obliquely upward toward the front compartment, and the outside air provided at the corresponding portion of the upper plate portion located above the inclined wall portion. Because it is released to the outside air from the opening connected to the outside, the heat received from the front compartment can be released efficiently from the opening to the outside of the vehicle, eliminating the heat damage (deformation / thermal deterioration) received by the cowl cover and maintaining the original performance of the cowl cover At the same time, it is possible to prevent an increase in the air vent temperature due to heat from the front compartment, and to reduce the cost.

  According to the invention described in claim 2, the heat insulating material on the front compartment side can be reliably supported by the lower end support portion and the upper end support portion that are integrally formed on the front compartment side from the lower end and the upper end of the inclined wall portion. The air layer portion can be easily formed by contacting the lower end and the upper end of the heat insulating material to the lower end support portion and the upper end support portion.

  According to the third aspect of the present invention, since the opening connected to the outside air is provided at a position hidden under the hood protruding from the upper side of the front compartment to the upper side of the upper plate portion, the opening flies during traveling. It is possible to reliably prevent the possibility of being clogged with trash and the like, and to ensure a heat dissipation effect from this opening.

It is sectional drawing which shows one Embodiment of the cowl cover apparatus which concerns on this invention. It is a disassembled perspective view of a cover apparatus same as the above. It is sectional drawing which shows other embodiment of a cover apparatus same as the above. It is sectional drawing which shows the heat flow effect | action of a cover apparatus same as the above. It is sectional drawing of the reference contrast structure for demonstrating the characteristic of a cover apparatus same as the above. It is sectional drawing of the other reference contrast structure for demonstrating the characteristic of a cover apparatus same as the above. It is a disassembled perspective view which shows other embodiment of a cover apparatus same as the above. It is sectional drawing which shows another embodiment of a cover apparatus same as the above. It is sectional drawing which shows another embodiment of a cover apparatus same as the above.

  First, the present invention will be described in detail with reference to an embodiment shown in FIGS.

  FIG. 1 shows a cowl cover device. A car body of an automobile includes a hood hood 2 as a hood that covers an engine room 1 as a front compartment, and a windshield 4 as a windshield positioned on the front side of the passenger compartment 3. A cowl cover 6 is attached to cover the cowl portion 5 therebetween. The cowl cover 6 is, for example, an elastically deformable resin molded product obtained by injection molding of a thermoplastic resin such as polypropylene, acrylonitrile / butadiene / styrene copolymer (ABS), or a polyamide synthetic resin using a mold. The upper outside air portion 7 and the lower air box 8 are partitioned.

  The cowl cover 6 is provided between the engine room 1 and the windshield 4 of the passenger compartment 3, and a slant wall portion 11 formed obliquely upward toward the engine room 1 at a position adjacent to the engine room 1, And an upper plate part 12 provided from the upper part of the inclined wall part 11 to the windshield 4 of the passenger compartment 3.

  The cowl cover 6 has a lower end support portion 14 and an upper end support portion 15 that support the heat insulating material 13 integrally formed in a U-shaped cross section from the lower end and upper end of the inclined wall portion 11 to the engine room 1 side. The heat insulating material 13 is in contact with and supported between the support portion 14 and the upper end support portion 15. The lower end support portion 14 is fixed to an extension panel 16 as a main body panel with a screw 17 via a sealing material.

  An air layer as shown in FIG. 2 is provided between the heat insulating material 13 disposed on the engine room 1 side of the inclined wall portion 11 of the cowl cover 6 and the inclined wall portion 11 by a plurality of rib-shaped spacers 18. A portion 19 is formed. Since each spacer 18 has a notch groove 20 at the center, the air layer portions 19 partitioned by the rib-shaped spacers 18 communicate with each other.

  In the cowl cover 6, the shape of the portion that receives heat from the engine room 1 on the front side of the vehicle is formed into a U-shaped cross section by the inclined wall portion 11, the lower end support portion 14, and the upper end support portion 15. A heat insulating material 13 is installed in the cross section, and a rib-shaped spacer 18 is provided at an attachment portion of the heat insulating material 13 so as to set an air layer portion 19.

  Returning to FIG. 1, the upper plate 12 of the cowl cover 6 is provided with a concave curved portion 21 which is concavely curved upward toward the rear of the vehicle at a corresponding position located above the inclined wall portion 11. The concave curved portion 21 is provided with an air intake portion 22 as an opening connected to the outside air. It is desirable to provide the air intake port 22 in a region where the entire area of the inclined wall portion 11 is projected right above.

  The air intake port 22 connected to the outside air is provided at a position hidden under the hood hood 2 that protrudes from above the engine room 1 to above the upper plate 12. The hood hood 2 is formed by integrating a hood outer portion 23 and a hood inner portion 24, and a seal member 25 that is elastically deformed by the hood inner portion 24 is provided on the upper end support portion 15 of the inclined wall portion 11. ing. FIG. 1 shows the seal member 25 before deformation.

  In the upper plate portion 12 of the cowl cover 6, an inclined surface portion 27 that is inclined downward toward the rear of the vehicle is formed on the concave curved portion 21 via the peak portion 26. A window frame portion 29 is formed in an upwardly inclined manner via 28. As shown in FIG. 2, the eaves portion 28 communicates with the drainage groove portion 30 in which the summit-like portion 26 is partially formed in a concave shape so as to be drainable forward.

  A windshield engaging portion 31 is integrally formed in a concave shape below the window frame portion 29, and the lower portion of the windshield 4 is fitted into the windshield engaging portion 31 together with the seal member 32.

  FIG. 3 shows another embodiment in which the air layer portion 19 is formed without using a spacer. When the heat insulating material 13 has a strength to maintain a certain shape, the rib-shaped spacer 18 is not necessarily required. Absent.

  Next, the effects of the embodiment shown in FIGS. 1 and 2 and the embodiment shown in FIG. 3 will be described with reference to FIGS.

  As shown in FIG. 4, a heat insulating material 13 is installed in a U-shaped cross section on the vehicle front side that receives heat directly from the cowl cover 6, and between the heat insulating material 13 and the inclined wall portion 11 of the cowl cover 6. Since the air layer portion 19 is set by the rib-shaped spacer 18 or the like, the heat that has passed through the heat insulating material 13 is dispersed throughout the air layer portion 19 and is applied to a specific portion of the inclined wall portion 11 of the cowl cover 6. The heat is efficiently radiated from the entire surface of the inclined wall portion 11 without being concentrated.

  Further, by adopting a triple structure of the heat insulating material 13, the air layer portion 19 and the inclined wall portion 11 of the cowl cover 6, the heat insulating layer through which heat passes is increased and the amount of heat passing is reduced.

  At this time, the upper and lower end portions of the heat insulating material 13 are formed at the lower end by forming the front side of the vehicle that receives heat directly from the cowl cover 6 in a U-shaped cross section by the inclined wall portion 11, the lower end support portion 14 and the upper end support portion 15. The air layer portion 19 is set in contact with the support portion 14 and the upper end support portion 15 so as to be in close contact with each other.

  On the other hand, when the heat insulating material 13a is in close contact with the inclined wall portion 11a as in the cowl cover 6a having the reference contrast structure shown in FIG. Directly acting on the inclined wall portion 11a of 6a, the inclined wall portion 11a partially becomes hot, the heat dissipation area is small, and the heat dissipation efficiency from the air intake port 22a is deteriorated.

  Further, as shown in FIG. 4, the inclined wall portion 11 having a U-shaped cross section is installed so as to be inclined toward the vehicle front side, and an air intake portion 22 connected to the outside air portion 7 is installed on the upper portion of the inclined wall portion 11. .

  Since the inclined slant wall 11 is provided, the surface area is increased and heat can be efficiently released, and the released heat is released from the slant wall 11 and immediately outside air from the upper air intake 22. It is discharged to part 7. The inclination of the inclined wall portion 11 does not prevent the hot air from rising toward the air intake portion 22 and can radiate heat from the entire area of the air intake portion 22.

  On the other hand, like the cowl cover 6b having the reference contrast structure shown in FIG. 6, in the vertical vertical wall portion 11b, there is an air layer portion 19b between the vertical wall portion 11b and the heat insulating material 13b. The hot air is concentrated in one place of the air intake port 22b and is not efficiently discharged to the outside.

  In this way, what is shown in FIG. 4 is that the heat of the heated inclined wall portion 11 is effectively released from the air intake portion 22 to the outside air, the heat accumulation is eliminated, and the temperature of the cowl cover 6 increases. Can be prevented. Simultaneously with the release of heat, outside air (cold air) is taken into the air box 8 from the air intake port 22 to cool the inclined wall portion 11.

  Since there is an air intake port 22 connected to the outside air portion 7 at the upper part of the inclined wall portion 11, the heat that has entered the air box 8 through the inclined wall portion 11 is immediately released to the outside air. The temperature rise of the air vent can be prevented, and the temperature rise of the air vent communicated with the air box 8 can also be prevented.

  Since the lower end portion of the cowl cover 6 is sealed with the extension panel 16, hot air does not enter the air box 8 through the gap.

  As described above, the heat that has passed through the heat insulating material 13 from the engine room 1 is diffused and dispersed in the air layer portion 19 provided between the heat insulating material 13 and the inclined wall portion 11, thereby It is possible to avoid the part from becoming partially hot, and by dispersing the heat, the maximum temperature of the cowl cover 6 can be lowered, and heat can be efficiently radiated over the entire surface of the inclined wall part 11.

  In particular, when the heat from the engine room 1 passes through the inclined wall portion 11 formed obliquely upward toward the engine room 1, the heat rises efficiently, and further, the upper plate portion 12 positioned above the inclined wall portion 11 Since the air intake 22 connected to the outside air provided at the corresponding location is released to the outside air, the heat received from the engine room 1 can be efficiently released from the air intake 22 to the outside of the vehicle, and the cowl cover 6 receives heat damage. (Deformation and heat deterioration) can be eliminated, the original performance of the cowl cover can be maintained, and an increase in the air vent temperature due to heat from the engine room 1 can be prevented.

  In addition, the cost can be reduced only by the cowl cover 6 and the heat insulating material 13 without installing an expensive heat shield cover or the like.

  Further, the lower end support portion 14 and the upper end support portion 15 integrally formed on the engine room 1 side from the lower end and upper end of the inclined wall portion 11 can reliably support the heat insulating material 13 on the engine room side, and support these lower ends. The air layer portion 19 can be easily formed by bringing the lower end and upper end of the heat insulating material 13 into contact with the portion 14 and the upper end support portion 15.

  Furthermore, since the air intake port 22 connected to the outside air is provided at a position hidden under the hood 2 protruding from the upper side of the engine room 1 to the upper side of the upper plate 12, the air intake port 22 is running. Therefore, it is possible to reliably prevent the possibility of being blocked by dust or the like flying in the air, and to ensure the heat dissipation effect from the air intake port 22.

  Next, FIG. 7 shows a cowl cover 6A of still another embodiment, and the width shape L of the heat insulating material 13 may be reduced in accordance with the position of the heat source on the engine room 1 side.

  Next, FIG. 8 shows a cowl cover 6B of still another embodiment, and the thickness of the heat insulating material 13 may be adjusted in accordance with the amount of heat from the engine room 1 side.

  Next, FIG. 9 shows a cowl cover 6C of still another embodiment, and a boss-shaped spacer 18b may be used instead of the rib-shaped spacer 18.

  In each of the above embodiments, the engine room 1 that houses an engine as an internal combustion engine is illustrated as a front compartment. However, an electric motor, a battery, or the like may be housed as the front compartment.

  The present invention can be used in manufacturing a cowl cover device.

1 Engine compartment as front compartment 2 Bonnet hood as hood 3 Car compartment 4 Windshield as windshield 6 Cowl cover
11 Slanted wall
12 Upper plate
13 Insulation
14 Bottom support
15 Upper end support
19 Air layer
22 Air intake as opening

Claims (3)

A cowl cover device provided between the front compartment and the windshield of the passenger compartment,
This cowl cover device
An inclined wall portion formed obliquely upward toward the front compartment at a position adjacent to the front compartment;
An upper plate part provided from the upper part of the inclined wall part to the windshield of the vehicle compartment,
A cowl cover provided with an opening connected to the outside air provided at a corresponding position located above the inclined wall portion in the upper plate portion;
A heat insulating material disposed on the front compartment side of the inclined wall portion of the cowl cover;
A cowl cover device comprising: the heat insulating material and an air layer portion provided between the inclined wall portion. The cowl cover is integrally formed with a lower end support portion and an upper end support portion that support the heat insulating material from the lower end and upper end of the inclined wall portion to the front compartment side,
The cowl cover device according to claim 1, wherein the heat insulating material contacts and is supported between the lower end support portion and the upper end support portion. The cowl cover device according to claim 1 or 2, wherein the opening connected to the outside air is provided at a position hidden under the hood that protrudes from above the front compartment to above the upper plate portion.

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