JP2013241071A - Vehicular roof auxiliary member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular roof auxiliary member that is made to secure a heat shield property without influence to an effective area for the heat shield of a heat shield member, even if the Assy part disposed to a roof trim increases.SOLUTION: A vehicular roof auxiliary member is disposed between a body panel and a roof trim disposed proximity to an inner space of the body panel. The vehicular roof auxiliary member includes: a support part installed in an inner surface of the body panel; and a heat shield member that is installed in the support part to oppose to the body panel, and reflects the radiant heat from the body panel. The support part is a support frame body installed in the inner surface of the body panel for instance to separate the space, and the heat shield member is a metal deposition layer that deposits the metal to the resin film.

Description

  The present invention relates to a vehicle roof auxiliary member.

Conventionally, especially in the summer, when a vehicle is parked in a direct sunlight parking lot, the vehicle body panel is heated by sunlight and becomes high temperature, and the temperature of the vehicle interior of the vehicle rises abnormally due to the radiant heat of the vehicle body panel, May reach 70 ° C or higher.
Therefore, in order to suppress such a temperature increase in the passenger compartment, a reflective layer that reflects radiant heat from the vehicle body panel, that is, a heat shield member, is reflected on the ceiling base material, that is, the roof trim, disposed inside the vehicle body panel on the ceiling. Is trying to arrange. There are thermal insulation members that are arranged in a state of being lifted from the roof trim and those that are integrated with the roof trim.

In the case of the structure in which the heat insulating member is floated from the roof trim, for example, as in Patent Document 1, the roof trim Rt is disposed on the front surface and the back surface side so as to sandwich the base material 1 made of urethane and the base material 1. Glass mat layers (+ isocyanate adhesive) 2 and 3; skin layer 4 laminated on glass mat layer 2 on the front surface side, that is, the passenger compartment side; and glass mat on the back surface side, that is, on the body panel (not shown) side It is composed of a heat shielding member 5 (PET film on which aluminum is deposited) laminated on the layer 3, and a nonwoven fabric or a spun lace as an adhesion preventing layer between the glass mat layer 3 on the vehicle body panel side and the heat shielding member 5 The fiber layer 6 is interposed (see FIG. 7).
In this case, the fiber layer 6 is smaller than the area constituting the roof trim Rt, and occupies the central area of the roof trim Rt, so that the central area of the heat shield member 5 adheres to the other components of the roof trim Rt. It is in a separated state without any problems. That is, the heat shielding member 5 is bonded to the glass mat layer 3 on the vehicle body panel side with an isocyanate-based adhesive at the positions on both sides of the vehicle body, and the front and rear end portions in the vehicle body front-rear direction are made of glass by pressure during molding. The mat layer 3 is bonded by an isocyanate adhesive to be impregnated.
According to such a structure, an air layer is secured between the center region of the heat shield member 5 separated by the fiber layer 6 and the vehicle body panel, and an increase in the temperature of the roof trim Rt due to heat conduction can be suppressed. It is said.

On the other hand, in the case where the roof trim and the heat shield member are integrated, there is no air layer between the vehicle body panel, and therefore, in terms of heat shield properties, a nonwoven fabric or the like is provided between the roof trim Rt and the heat shield member 5. Although it is inferior to the structure having an adhesion preventing layer interposed, it can be said that it is excellent in overall moldability and advantageous in production cost.

European Patent No. 0993935

By the way, various assembly parts (Assembly: urethane chips, harnesses, harness fixing tapes, curtain airbags, pads, etc.) are disposed on the roof trim facing the vehicle body panel side, that is, these Assembly parts are shielded from heat. As a result, the effective area for reflection of radiant heat from the vehicle body panel by the heat shield member is narrowed, and the reflection ability of radiant heat is reduced accordingly. As a result, the vehicle interior is radiated as thermal energy, and the air temperature inside the vehicle rises.

The present invention has been proposed to improve the above-described problems, and even if the number of Assy parts arranged on the roof trim is increased, the effective area for heat shielding of the heat shielding member is not affected. An object of the present invention is to provide a vehicle roof auxiliary member that ensures heat insulation.

In order to improve the above-mentioned problem, in the invention according to claim 1, a vehicle roof auxiliary member disposed between a vehicle body panel and a roof trim disposed in the inner space of the vehicle body panel, A support portion attached to the inner surface of the vehicle body panel, and a shield that is provided on the support portion so as to face the vehicle body panel and is separated from a surface of the roof trim that faces the vehicle body panel, and reflects radiant heat from the vehicle body panel. And a thermal member.

  Thereby, even if the number of Assy parts arranged on the roof trim increases, the effective area for heat insulation of the heat insulation member is not affected, and heat insulation can be ensured.

  Further, the invention according to claim 2 is characterized in that the support portion is configured to separate a space from the inner surface of the vehicle body panel.

  As a result, the space can provide a heat insulating effect, can effectively reflect the radiant heat into the vehicle interior, and can suppress the thermal influence on the Assy component disposed in the roof trim.

  Moreover, in the invention which concerns on Claim 3, a heat-insulating member is a metal vapor deposition layer comprised by vapor-depositing a metal on one surface of a resin film, It is characterized by the above-mentioned.

  Thereby, the radiant heat from a vehicle body panel can be effectively reflected by the metal vapor deposition layer which comprises a heat-shielding member.

According to the present invention, the heat shielding member is disposed away from the vehicle body panel side surface of the roof trim on which various Assy parts are disposed, so that even if the number of Assy parts disposed on the roof trim increases, The effective area of the heat shield member is not affected, and heat shield properties can be ensured.

(A) It is a typical section side view of a 1st embodiment of a roof auxiliary member for vehicles concerning the present invention. (B) It is a typical top view of the roof auxiliary member for vehicles shown in Drawing 1 (a). It is typical sectional drawing which shows 2nd Embodiment of the roof auxiliary member for vehicles concerning this invention. It is a typical sectional view showing a 3rd embodiment of a roof auxiliary member for vehicles concerning the present invention. It is a typical sectional view showing a 4th embodiment of a roof auxiliary member for vehicles concerning the present invention. It is a typical sectional view showing a 5th embodiment of a roof auxiliary member for vehicles concerning the present invention. It is a typical sectional view showing a 6th embodiment of a roof auxiliary member for vehicles concerning the present invention. It is typical sectional drawing for demonstrating an example of the conventional roof trim.

Hereinafter, embodiments of a vehicle roof auxiliary member according to the present invention will be described with reference to the accompanying drawings. The vehicle roof auxiliary member here is disposed between the vehicle body panel and a roof trim that is disposed in the vicinity of the inner space of the vehicle body panel. That is, the vehicle roof auxiliary member includes a support portion attached to the inner surface of the vehicle body panel, and a heat shield member provided on the support portion so as to face the vehicle body panel and reflecting radiant heat from the vehicle body panel. To do.

(First embodiment)
FIGS. 1A and 1B show a roof auxiliary member 10 that shields radiant heat from the vehicle body panel P. FIG. Here, the roof auxiliary member 10 uses the space S as a support portion attached to the inner surface of the vehicle body panel P in the space between the vehicle body panel P and the roof trim Rt that is disposed close to the inner space of the vehicle body panel P. A support frame body 11 provided at a distance, and a heat shield member 12 attached to the support frame body 11 as a surface facing the vehicle body panel P are provided.
Although the detailed illustration and description of the roof trim Rt are omitted, a roof trim having a known configuration is used here. That is, the roof trim Rt is provided on the surface of the vehicle interior, the urethane base material, the vehicle compartment side fiber layer and the vehicle body panel side fiber layer disposed so as to sandwich the base material, and the vehicle interior side fiber layer. It is comprised by the skin layer which forms a ceiling surface, and the back surface of a vehicle body panel side fiber layer, ie, the ventilation | gas_flow prevention layer facing the vehicle body panel side. In addition, for example, a harness, a urethane chip, a pad, or the like is provided as an Assy component (not shown) in the air-blocking layer.

The support frame 11 is made of, for example, a PP (polypropylene) resin frame assembled in a rectangular parallelepiped shape. The support frame 11 is assembled with a support column 11a for securing a space S between the vehicle body panel P and a support column. The first frame portion 11b ₁ and the second frame portion 11b ₂ having a longer dimension than the first frame portion 11b ₁ are configured.
The heat shield member 12 is a metal vapor deposition layer configured by vapor-depositing a metal such as aluminum on one surface of a resin film such as polypropylene terephthalate (PPT) or polyethylene terephthalate (PET). Of course, in addition to vapor deposition of a metal such as aluminum, it is also possible to laminate an aluminum foil, an aluminum sheet, or a stainless steel foil on the resin film.
The heat shield member 12 has an area that can be attached to a rectangular frame formed by the first frame portion 11b ₁ and the second frame portion 11b ₂ in the support frame body 11. When the heat shield member 12 is attached to the vehicle body panel P via the support frame body 11, the heat shield member 12 is opposed to the inner surface of the vehicle body panel P with a space S between the heat shield member 12 and the vehicle body panel P. Placed in.
In this case, the heat shield member 12 is preferably located at a position of approximately 20 mm or less from the inner surface of the vehicle body panel P, and is located above the Assy component disposed on the roof trim Rt.
Thereby, the radiant heat due to sunlight received by the vehicle body panel P is reflected by the heat shield member 12 so that the radiant heat does not directly reach the Assy parts on the roof trim Rt.

  According to the roof auxiliary member 10 as described above, the radiant heat generated by the sunlight received by the vehicle body panel P can be insulated by the space S between the vehicle body panel P and the heat shield member 12 can bring the vehicle into the vehicle interior. The radiant heat can be effectively reflected, the rise of the room temperature in the passenger compartment can be suppressed, and the thermal influence on the Assy component disposed in the roof trim Rt can be suppressed.

(Second Embodiment)
FIG. 2 shows the roof auxiliary member 10 according to the second embodiment. The roof auxiliary member 10 includes a resin support layer 13 as a support portion attached to the inner surface of the vehicle body panel P, and a heat shield member 12 laminated via the resin support layer 13.
Since the heat shield member 12 is a metal vapor deposition layer having the same configuration as the heat shield member 12 shown in the first embodiment, description thereof is omitted.
The resin support layer 13 preferably has a thickness of about 5 to 10 mm, and a well-known engineering plastic is used. For example, the heat shielding member 12 can be composed of a PET film with improved adhesion and a heat-resistant resin (such as urethane resin).

  According to the roof auxiliary member 10 of the second embodiment described above, there is no space as in the first embodiment between the resin support layer 13 on which the heat shield member 12 is laminated and the vehicle body panel P. The movement can be suppressed and heat conduction by convection can be reduced. Therefore, even if the vehicle body panel P is heated by the radiant heat from sunlight, the heat conduction to the heat shield member 12 can be suppressed, and the thermal influence on the Assy component disposed on the roof trim Rt can be suppressed. Radiation of heat into the room is suppressed, and an increase in the passenger compartment temperature can be suppressed.

(Third embodiment)
FIG. 3 shows a roof auxiliary member 10 according to the third embodiment. The roof auxiliary member 10 includes an adhesive layer 14 as a support portion laminated on the inner surface of the vehicle body panel P, and a honeycomb structure 15 bonded through the adhesive layer 14 and having a metal vapor deposition film formed on the surface. Has been.
The honeycomb structure 15 is formed by depositing a metal such as aluminum on a vehicle body panel P by bonding a reinforcing material such as kraft paper on one side of the structure in which a large number of hexagonal air chambers 15ac are defined. It is fixed via an adhesive layer 14. The honeycomb structure 15 is formed with a metal vapor deposition film in which a metal such as aluminum is vapor-deposited on the vertical wall and bottom surface of the air chamber 15ac having a hexagonal cross section or on the bottom surface.

  According to the roof auxiliary member 10 according to the third embodiment described above, the metal vapor deposition surface of the air chamber 15ac of the honeycomb structure 15 reflects the radiant heat from the vehicle body panel P, while the highly rigid honeycomb structure 15 The rigidity and vibration damping property of the vehicle body panel P can be improved. For this reason, the vehicle body panel P vibrates due to the impact caused by the impact of raindrops or other falling objects such as raindrops, firewood, and pebbles, and the vehicle body panel P becomes a large noise source and suppresses reverberation in the vehicle interior. Functions can also be provided.

(Fourth embodiment)
FIG. 4 shows the roof auxiliary member 10 according to the fourth embodiment. The roof auxiliary member 10 includes a heat insulating member 20 as a support portion in which a plurality of air chambers 20ac are defined on the inner surface of the vehicle body panel P, and a heat shield member 12 laminated via the heat insulating member 20. Yes.
The heat insulating member 20 is made of a well-known resin, and a large number of air chambers 20ac having a certain partitioned volume are defined. The air chamber 20ac provides heat insulation. Furthermore, the heat insulating member 20 is laminated with a heat shield member 12 so as to face the inner surface of the vehicle body panel P. Since the structure of the heat shield member 12 is a metal vapor deposition layer having the same structure as that of the above-described embodiment, the description thereof is omitted.

(Fifth embodiment)
In the roof auxiliary member 10 according to the fifth embodiment, instead of the heat insulating member 20 in which a plurality of air chambers 20ac are defined, illustration is omitted, but, for example, kraft paper is laminated on the front and back surfaces of urethane material Can also be used. According to such a heat insulating member, sound absorption and rigidity are improved as a vibration damping material.
Further, the heat insulating member includes a foam material or a porous material in which the structure itself includes a minute air layer. In short, what is necessary is just to provide a heat insulation function.

According to the roof auxiliary member 10 according to the fourth and fifth embodiments described above, in addition to the heat insulating effect by the heat insulating member 20, since the movement of air is suppressed, heat conduction by convection can be reduced.

(Sixth embodiment)
FIG. 5 shows a roof auxiliary member 10 according to the sixth embodiment.
In this roof auxiliary member 10, the heat insulation member 20 in the roof auxiliary member 10 according to the fourth embodiment is joined to the inner surface of the vehicle body panel P by the fixing adhesive B, whereby the height dimension of the air chamber 20 ac of the heat insulation member 20 is obtained. It is attached with a gap ng having a minute gap as compared with the above.

According to the roof auxiliary member 10 according to the sixth embodiment described above, heat conduction from the vehicle body panel P can be blocked by the gap ng, and a further heat shielding effect can be achieved by a synergistic effect with the heat shielding member 12. Can do.

(Seventh embodiment)
FIG. 6 shows a roof auxiliary member 10 according to the seventh embodiment.
In this roof auxiliary member 10, in addition to the roof auxiliary member 10 according to the sixth embodiment, the heat insulating member 20 is attached via a metal vapor deposition layer which is the heat shielding member 12 while separating the gap ng. Of course, a metal vapor deposition layer as the heat shield member 12 is provided on the surface of the roof auxiliary member 10 facing the roof trim Rt.

Thereby, the area which reflects the radiant heat from the vehicle body panel P increases, and the heat shielding effect can be expected more effectively.

  The vehicle roof auxiliary member according to the present invention has been described individually with various embodiments. In any case, the vehicle roof auxiliary member of the present invention is disposed independently of the roof trim disposed in the inner space of the vehicle body panel, and the heat shield structure is provided on the vehicle body panel of the roof trim. Since it is provided apart from the opposing surface, the effective area of the heat shield member in the roof trim is not affected even if the number of Assy parts arranged in the roof trim is increased, and the heat shielding property is ensured. be able to.

DESCRIPTION OF SYMBOLS 10 Roof auxiliary member 11 Support frame body 11a Support | pillar part 11b ₁ 1st frame part 11b ₂ 2nd frame part 12 Thermal insulation member 13 Resin support layer 14 Adhesive layer 15 Honeycomb structure 15ac Air chamber 20 Heat insulation member 20ac Air chamber P Car body Panel Rt Roof trim S Space B Fixed adhesive ng Air gap

Claims (3)

A vehicle roof auxiliary member disposed between a vehicle body panel and a roof trim disposed in the inner space of the vehicle body panel,
A support attached to the inner surface of the vehicle body panel;
A heat insulating member provided on the support portion so as to face the vehicle body panel and spaced from a surface of the roof trim facing the vehicle body panel and reflecting radiant heat from the vehicle body panel;
A vehicle roof auxiliary member. The support portion is configured to separate a space from the inner surface of the vehicle body panel.
The roof auxiliary member for a vehicle according to claim 1. The heat-shielding member is a metal vapor deposition layer configured by vapor-depositing metal on one surface of the resin film.
The roof auxiliary member for a vehicle according to claim 1.

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