JP5551032B2 - Cowl louver heat shield - Google Patents

Description

  The present invention relates to a heat shield plate provided in a cowl louver in order to prevent heat generated in an engine room of an automobile from entering a passenger compartment through a ventilation duct.

This type of heat insulating plate for a cowl louver includes a base member coupled to the cowl louver and a seal member for maintaining airtightness between the base member and the inner surface of the engine hood. The base member is formed of a hard resin material, and the seal member is formed of a resin material that is elastically deformed flexibly. The individually molded base member and the sealing member are bonded with a double-sided adhesive tape or the like.
In addition, as what shows the relationship between an engine hood and a cowl louver, the technique disclosed by patent document 1, for example is well-known.

JP 2010-6214 A

  Conventional heat insulating plates for cowl louvers are often manufactured through the process of molding the base member and the sealing member separately and bonding them together to integrate them. Work personnel and time.

  The present invention is intended to solve such problems, and an object of the present invention is to simplify the manufacturing process of the heat shield and to save labor personnel.

The present invention is for achieving the above object, and is configured as follows.
A first invention is a cowl louver heat shield that is disposed between an inside of an engine hood and a cowl louver in an automobile and prevents heat from the engine room from entering the vehicle interior . A seal member made of a resin material that is elastically deformed flexibly in order to maintain airtightness between the base member and the engine hood is integrated with the base member formed of a resin material by direct molding. And the base member is couple | bonded with the cowl louver by couple | bonding the clip part provided in the base member with the attachment hole of the cowl louver .

  Thereby, after forming a base member and a sealing member individually, compared with integrating these by adhesion | attachment, the manufacturing process of a thermal-insulation board is simplified and the labor saving of a worker becomes possible.

According to a second aspect of the present invention, in the first aspect, the cowl louver and engine hood having different shapes depending on the vehicle type have a common base member in a predetermined shape, and the sealing member has a shape of the cowl louver and engine hood for each vehicle type. Molded together.
According to a third invention, in the first or second invention, reinforcing ribs are continuously provided on the side surface of the base member that is thermally influenced during the direct molding of the seal member. Similarly, the seal members of the portions molded on both sides of the base member by direct molding are connected to each other through through holes penetrating the both side surfaces of the base member.

  In this way, the manufacturing cost can be reduced by sharing the base member whose equipment cost such as the molding die is more expensive than the sealing member.

The side view showing the heat insulating board of the state assembled | attached to the cowl louver. The perspective view showing the heat insulating board of the state assembled | attached to the cowl louver. The plane sectional view showing the heat shield in the state assembled to the cowl louver. The longitudinal cross-sectional view showing the heat shield in the state assembled | attached to the cowl louver. The disassembled perspective view showing the heat shield. Explanatory drawing showing the means which makes a heat shield correspond to every vehicle type.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
The cowl louver 14 shown in FIGS. 1 to 4 is an integrally molded product made of a resin material, and at the boundary between the lower part of the windshield of the automobile and the engine room (both not shown), the vehicle body side and the lower part of the windshield. It is assembled in a state where it is coupled to. Therefore, the entire shape of the cowl louver 14 has a predetermined width, and extends in the vehicle width direction following the shape of the lower portion of the windshield.

  The cowl louver 14 has a large number of ventilation holes 16 arranged in a lattice pattern (FIG. 2). The cowl louver 14 is divided into a windshield side region exposed from the engine hood 10 in the width direction and an engine room side region located inside the engine hood 10 (FIG. 1). A cushion 18 also serving as a seal is provided along the longitudinal direction (vehicle width direction) of the cowl louver 14 at the end of the region located on the engine room side. The cushion 18 has a function of blocking heat from the engine room from flowing in the front direction and blocking sound generated by the engine and a water stop function for the engine room.

On both sides of the engine hood 10, a heat shield 20 is disposed between the inner panel 12 and the cowl louver 14 of the engine hood 10. The heat shield plate 20 functions to prevent heat in the engine room from entering the vehicle compartment through a ventilation duct (not shown).
The heat shield plate 20 includes a base member 22 coupled to the cowl louver 14, a seal member 24 that keeps airtight between the base member 22 and the inner panel 12 of the engine hood 10, and the cowl louver 14 and the base member 22. It is comprised by the vibration proofing members 26, such as a nonwoven fabric, which isolate | separates the vibration between them (FIG. 1, FIG. 2 and FIG. 4). The base member 22 is formed of a hard resin material such as polypropylene (PP), and the seal member 24 is formed of a resin material that is elastically deformed flexibly such as an elastomer (TPE).

  The outline of the base member 22 has a shape corresponding to the surface shape of the inner panel 12 of the engine hood 10 and the surface shape of the cowl louver 14 located inside the engine hood 10. One side of the base member 22 is provided with an arm portion 22a that integrally extends laterally therefrom, and a clip portion 22b is provided at the tip of the arm portion 22a (FIGS. 3 to 5). As shown in FIG. 4, the base member 22 (heat shield plate 20) is coupled to the cowl louver 14 by inserting the clip portion 22 b into the attachment hole 15 formed in the cowl louver 14 and coupling it.

The base member 22 includes a plurality of (four) contact ribs 22c protruding from both front and rear side surfaces. When the base member 22 is coupled to the cowl louver 14, these abutment ribs 22c are positioned between the engagement pieces 17 provided on the cowl louver 14 to position the base member 22 (FIG. 3).
Further, the base member 22 is provided with reinforcing ribs 22e continuously provided in the front-rear direction on one side surface and through holes 22d penetrating over both side surfaces (FIG. 5). These roles will be described later.

The seal member 24 is provided along the edge of the base member 22 on the side facing the inner panel 12 of the engine hood 10. The seal member 24 has a seal surface 24 a that contacts the inner panel 12, and the shape of the seal surface 24 a substantially corresponds to the surface shape of the inner panel 12. Further, on both sides of the seal member 24, flange portions 24b are provided for enhancing the airtightness and the reinforcement.
As is well known, the shapes of the base member 22 and the seal member 24 constituting the heat shield plate 20 vary widely depending on the vehicle type, and FIGS. 1 to 5 show examples thereof.

Next, manufacturing of the heat shield plate 20 will be described. First, the base member 22 is formed of a resin material such as PP. Thereafter, the seal member 24 is directly formed on the base member 22 by TPE or the like, and the base member 22 and the seal member 24 are integrated. At the same time as or concurrently with the molding of the seal member 24, a vibration isolation member 26 is formed on the lower edge of the base member 22, and the vibration isolation member 26 is integrated with the base member 22.
In this way, by directly forming the seal member 24 and the vibration isolation member 26 on the base member 22, the manufacturing process of the heat shield plate 20 is simplified, unlike the conventional one that requires multiple steps. It is possible to improve performance and save labor.

  Further, when molding the seal member 24, TPE or the like enters the through hole 22d of the base member 22, and the portions of the seal member 24 molded on both sides of the base member 22 are coupled through the through hole 22d. Thereby, integration with the base member 22 and the sealing member 24 is strengthened. Furthermore, by providing the base member 22 with the reinforcing rib 22e, it is possible to prevent the base member 22 from being deformed due to the thermal influence during the direct molding of the seal member 24.

As already described, the shape and structure of the heat shield plate 20 vary widely depending on the vehicle type, because the surface shape of the inner panel 12 or the cowl louver 14 of the engine hood 10 is different for each vehicle type.
Therefore, for example, in the two types of heat shield plates 20 shown in FIGS. 4A and 4B, the base members 22 are made common in a predetermined shape, and the seal members 24 are used for the individual inner panels 12 and the cowl louvers 14. Match the surface shape. That is, the manufacturing cost of the heat shield plate 20 can be reduced by sharing the base member 22 that is expensive in equipment costs such as a molding die.

10 Engine hood 14 Cowl louver 20 Heat shield 22 Base member 24 Seal member

Claims (3)

It is placed between the inside of the engine hood and the cowl louver in an automobile,
A heat shield for a cowl louver to prevent heat from the engine room from entering the vehicle interior,
A seal member made of a resin material that is elastically deformed flexibly in order to maintain the airtightness between the base member and the engine hood is integrated with the base member by direct molding. A heat insulating plate for a cowl louver in which a base member is coupled to a cowl louver by coupling a provided clip portion to a mounting hole of the cowl louver. A heat shield for a cowl louver according to claim 1,
A cowl louver heat shield for a cowl louver and engine hood that have different shapes depending on the vehicle model, with a base member shared in a predetermined shape and a sealing member that is shaped to match the shape of the cowl louver and engine hood for each vehicle type . A heat shield for a cowl louver according to claim 1 or 2,
  In the base member, reinforcing ribs are continuously provided on the side surfaces of the part that is affected by heat during direct molding of the seal member. A heat insulating plate for a cowl louver that is connected to each other through a through-hole.

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