JP2010167922A - Roof panel for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roof panel capable of securing rigidity against acting pressure by minimizing an increase of weight. <P>SOLUTION: This roof panel 10 can be mounted in an opening part 11a of a roof 11 of a vehicle 1 and includes a resin panel body 5 having an outside panel part 51 which is located at a position of the same surface as an outer surface 11b of the roof 11, and an inside panel part 52 arranged on a lower side of the outside panel part 51 with a space part 55 in the vehicle vertical direction. The width of the vehicle vertical direction of the space part 55 is constituted so that a vehicle front side may be larger than a vehicle rear side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a roof panel attached to a roof opening of a vehicle.

  In recent years, some roof panels mounted on the roof of a vehicle use a panel body formed of a resin material in order to reduce the weight.

  In such a conventional roof panel, a resin-made panel body arranged so as to be flush with the vehicle roof is composed of an outer panel portion on the vehicle exterior side and an inner panel portion on the vehicle compartment side. . A certain space is provided in the vertical direction of the vehicle between the outer panel and the inner panel, and a reinforcing rib is disposed in the space. (For example, refer to Patent Document 1).

JP 2000-142119 A

  A pressure generated by the air flow acts on the roof panel during traveling of the vehicle, and the pressure distribution varies depending on the portion of the roof panel. That is, a pressure (negative pressure) greater than the rear portion is generated in the front portion of the roof panel toward the top of the vehicle.

  In the roof panel having the configuration shown in Patent Document 1, a panel body having a uniform thickness is reinforced with ribs. There has been proposed a method for increasing the rigidity of a required roof panel by providing a large number of ribs in a portion where a large pressure acts. However, this configuration requires a large number of ribs arranged in the space between the outer panel portion and the inner panel portion, which causes a problem of increasing the weight.

  In view of the above-described problems, an object of the present invention is to provide a roof panel that can reduce the increase in weight as much as possible and can secure rigidity against pressure that still acts.

  In order to solve the above-mentioned problem, the invention according to claim 1 is capable of being attached to an opening portion of a roof of a vehicle, and has an outer panel portion that is flush with an outer surface of the roof, and a space portion in a vehicle vertical direction. A roof panel comprising a resin panel body having an inner panel portion disposed below the outer panel portion, wherein the width of the space portion in the vehicle vertical direction is larger on the vehicle front side than on the rear side. .

  In addition to the first aspect, the invention described in claim 2 is configured such that the thickness of the inner panel portion is smaller than the thickness of the outer panel portion.

  According to a third aspect of the present invention, in addition to the first aspect, the panel body is configured to have a uniform composition with a resin material, and an edge portion of the panel portion is made of a resin material different from the panel portion. A reinforcing frame was disposed, and a steel plate supporting frame for supporting the seal was attached to the reinforcing frame.

  Moreover, in addition to Claim 1, invention of Claim 4 was set as the structure which has the rib arrange | positioned in the said space part.

  In addition to the fourth aspect, the invention according to the fifth aspect is configured such that the inner panel portion and the outer panel portion are connected by the rib.

  In addition to claim 5, the invention according to claim 6 has an R portion in which the thickness of the rib of the connecting portion increases in at least one of the inner panel portion and the outer panel portion of the rib. Made the configuration.

  In the invention according to claim 1, the panel body of the roof panel has high rigidity against pressure because the vertical width of the space portion is large in the vehicle vertical direction at the front side portion where a large pressure (negative pressure) is generated. On the other hand, in the rear part where the small pressure acts, the vertical width of the space part is smaller than that of the front part, and the rigidity is also reduced. As described above, since the panel body is configured to have rigidity corresponding to different pressures in each portion, stress is less likely to be generated at a specific part of the panel body. In order to change the rigidity of each part, an increase in weight can be minimized due to the configuration in which the vertical width of the space part is changed.

  In the invention according to claim 2, the outer panel portion having a surface outside the vehicle is made thicker than the inner panel portion on the vehicle interior side to cope with external forces acting on the outer panel portion such as the weight of snow in addition to pressure. Rigidity can be secured.

  In the invention according to claim 3, the panel body whose thickness varies depending on the part is made of resin that is lightweight and easy to mold, while the support frame that supports the seal for waterproofing is made of steel plate. The influence of the thermal expansion of the body and its reinforcing frame on the seal can be avoided.

  In the invention according to claim 4, even when pressure or external force is applied, the shape of the space is maintained by the rib, and the rigidity of the panel body is secured. For this reason, the thickness of the inner panel can be reduced to reduce the weight.

  In the invention described in claim 5, since the inner panel portion and the outer panel portion are connected by the rib, the effect of maintaining the shape of the space portion can be obtained by the thin rib.

  According to the sixth aspect of the present invention, it is possible to avoid concentration of stress on the connecting portion by attaching the R portion to the connecting portion between the rib, the inner panel portion, and the outer panel portion.

It is a side view of a vehicle provided with the roof panel of a 1st embodiment concerning the present invention. It is a top view of a vehicle roof provided with the roof panel of a 1st embodiment concerning the present invention. FIG. 3 is a sectional view taken along line III-III in FIG. 2. FIG. 4 is an enlarged view of a portion IV in FIG. 3. FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. It is a top view of a vehicle roof provided with the roof panel of 2nd Embodiment in connection with this invention. It is sectional drawing in VII-VII in FIG. It is sectional drawing in VIII-VIII in FIG. It is a top view of a vehicle roof provided with the roof panel of 3rd Embodiment in connection with this invention. FIG. 10 is a sectional view taken along line XX in FIG. 9. It is sectional drawing in XI-XI in FIG.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the vehicle 1 in a side view, and the flow of air flowing over the roof 11 while the vehicle 1 is running is indicated by a flow line A. At the front side of the roof 11, the flow velocity is fast and a large negative pressure F is generated. Here, the two-dot chain line in FIG. 1 shows a schematic pressure distribution.

  Further, FIG. 2 shows a plan view of the roof 11. As shown in FIGS. 1 and 2, the roof 11 is provided with an opening 11 a that can open the vehicle compartment 15 to the outside of the vehicle. A roof panel 10 that can be opened and closed by an opening / closing device (not shown) is attached to the opening 11a. The roof panel 10 has a structure capable of airtightly closing the opening 11a. While the roof panel 10 is closed and the vehicle 1 is traveling, the air pressure on the roof 1 is lower than the air pressure in the passenger compartment 15, so that an upward pressure indicated by an arrow B in FIG. Works. The pressure indicated by the arrow B is greater in the front portion of the roof panel 10 than in the rear portion, and has a different distribution depending on the portion of the roof panel 10.

  3 is a cross-sectional view of the roof panel 10 taken along the line III-III in FIG. 1, and FIG. 4 is an enlarged view of the IV part in FIG. FIG. 5 is a cross-sectional view of the roof panel 10 taken along the line VV in FIG.

  As shown in FIGS. 3 and 4, the roof panel 10 includes a panel body 5 that mainly constitutes the roof panel 10. The panel body 5 has an outer panel portion 51 disposed on the vehicle exterior side and an inner panel portion 52 disposed on the vehicle compartment side. As shown in FIG. 4, the outer surface 51 a of the outer panel portion 51 is disposed in the same plane as the outer surface 11 b of the roof 11 in a state in which the roof panel 10 closes the opening portion 11 a. A smooth roof surface.

  A space portion 55 is provided between the outer panel portion 51 and the inner panel portion 52. The space portion 55 has a front end wall 53 at the front end in the vehicle front-rear direction, a rear end wall 54 at the rear end, and a side wall 56 as shown in FIG. They are connected and formed in a closed space.

  As shown in FIGS. 3, 4, and 5, the outer panel portion 51 has a flange extending forward from the front end wall 53, rearward from the rear end wall 54, and further laterally from the side walls 56 on both sides. 51b is formed. The reinforcing frame 6 is formed in close contact with the panel body 5 so as to cover the lower surface of the flange portion 51b, the front surface of the front end wall 53, and the front end lower surface of the inner panel portion 52. The panel body 5 and the reinforcing frame 6 are both formed of a resin material and have excellent connectivity.

  The panel body 5 having the closed space 55 is usually produced by using a gas injection method of a resin material or the like, and has a uniform structure obtained by integral molding without a joint portion by an adhesive or welding. For the panel body 5, a resin material capable of realizing the glossy and smooth appearance quality of the outer surface 51 a of the outer panel portion 51 is selected, and for the reinforcing frame 6, a resin material impregnated with glass fiber or the like is selected for the purpose of reinforcement. It is.

  The reinforcing frame 6 has protrusions 61 extending downward at a plurality of locations. A steel plate support frame 7 having a hole 72 through which the protrusion 61 passes is disposed so as to sandwich the reinforcing frame 6 below the flange 51b, and is attached over the entire circumference of the panel body 5. The support frame 7 is held on the roof panel 10 by a retaining 9 that is locked to the protrusion 61. The seal 8 is attached to the entire outer periphery of the support frame 7 so as to partially protrude from the outer periphery of the flange portion 51b.

  As shown in FIG. 4, the seal 8 abuts against the end surface of the opening 11a, and the roof panel 10 can close the opening 11a in an airtight manner. The inner diameter of the hole 72 is larger than the diameter of the protrusion 61 and there is a gap between them. Due to the temperature change, the difference in expansion or contraction between the steel plate support frame 7 and the resin panel body 5 and the reinforcing frame 6 is absorbed, and the airtightness with the opening 11a of the seal 8 is maintained. . Although not shown, roof panel support parts of an opening / closing device are attached to the support frame 7 at left and right portions in the vehicle width direction, and the roof panel 10 is supported by the vehicle 1 via the opening / closing device.

  As described above, a large pressure acts in the vertical direction (the direction in which the panel body 5 is peeled off) in the front portion of the roof panel 10, and a pressure smaller than the front portion acts in the vertical direction in the rear portion. On the other hand, the vertical width of the space 55 of the panel body 5 is large at the front C portion and smaller than the rear D portion as shown in FIG. That is, the rigidity of the roof panel 10 is large on the front side where the vertical width of the space 55 is large, and the rigidity is smaller on the rear side than on the front side. Thus, the rigidity distribution of the roof panel 10 is made to correspond to the distribution of the acting pressure. With this configuration, it is possible to avoid the occurrence of partial concentration of high stress on the roof panel 10 and to reduce the weight efficiently with a minimum of materials.

  A rib 57 is partially formed on the inner panel portion 52 so as to be convex toward the space portion 55, and the rigidity of the roof panel 10 is secured by maintaining the shape of the space portion 55 even when pressure is applied. The outer panel 51 has a predetermined thickness for ensuring a strength corresponding to an external force acting due to snow accumulation or the like as well as a smooth appearance. On the other hand, the inner panel portion 52 is configured to be thinner than the outer panel portion 51 by increasing the rigidity with the ribs 57, thereby contributing to weight reduction.

  Next, a second embodiment of the present invention will be described based on FIG. 6, FIG. 7, and FIG. In addition, the same number as the structure corresponding to 1st Embodiment is provided with respect to the site | part which is not used for description in the figure regarding the following 2nd and 3rd Embodiment.

  In the roof panel 110, a plurality of ribs 154 that connect the outer panel portion 151 and the inner panel portion 152 of the panel body 105 are formed extending in the front-rear direction of the vehicle 1. The panel body 105 does not include a wall portion corresponding to the front end wall 53 and the rear end wall 56 of the panel body 5 of the first embodiment. And the space part 155 can be formed by using the molding method using an insertion mold, and the panel body 5 can be integrally molded with a homogeneous composition. As shown in FIG. 8, an R portion formed so that the thickness of the rib 154 is increased is attached to the connecting portion of the outer panel portion 151, the inner panel portion 152, and the rib 154. Stress concentration at the connecting portion can be prevented by the R portion.

  A third embodiment of the present invention is shown in FIG. 9, FIG. 10, and FIG.

  In the roof panel 210, a plurality of ribs 254 that connect the outer panel portion 251 and the inner panel portion 252 of the panel body 205 are formed extending in the width direction of the vehicle 1. As shown in FIG. 11, the wall portion corresponding to the side wall 56 (FIG. 5) of the panel body 5 of the first embodiment is not provided. And the space part 255 can be formed by using the shaping | molding construction method using an insertion type | mold, and the integral molding with the homogeneous composition of the panel body 5 is enabled. As in the configuration of the second embodiment, the outer panel portion 251 and the inner panel portion 252 and the connecting portion of the rib 254 are provided with an R portion formed to increase the thickness of the rib 254. The R portion can prevent stress concentration at the connecting portion.

  As described above, in the roof panels 10, 110, and 210 shown in the first, second, and third embodiments, the vertical widths of the space portions 55, 155, and 255 in the panel bodies 5, 105, and 205 are set to the vehicle. 1, the rigidity of each part corresponding to the acting pressure distribution is realized. Therefore, the required rigidity can be ensured while minimizing the increase in weight.

  In the first, second, and third embodiments, a structure having a uniform structure that is manufactured by using a gas injection method, a molding method, or the like, has no joint portion by an adhesive or welding, and is obtained by integral molding. Although it is desirable, it is good also as an integral shape by joining by an adhesive agent or welding, for example.

DESCRIPTION OF SYMBOLS 1 Vehicle 5, 105, 205 Panel body 6 Reinforcement frame 7 Support frame 8 Seal 10, 110, 210 Roof panel 51, 151, 251 Outer panel 52, 152, 252 Inner panel 55, 155, 255 Space part

Claims (6)

An outer panel that can be attached to the opening of the roof of the vehicle and is flush with the outer surface of the roof; an inner panel disposed below the outer panel with a space in the vehicle vertical direction; A roof panel comprising a resin panel body having
A roof panel in which the width of the space in the vehicle vertical direction is larger on the front side of the vehicle than on the rear side.   The roof panel according to claim 1, wherein a thickness of the inner panel portion is configured to be thinner than a thickness of the outer panel portion.   The panel body is configured to have a uniform composition with a resin material, a reinforcing frame made of a resin material different from the panel portion is arranged at an edge of the panel portion, and a steel plate support that supports a seal on the reinforcing frame The roof panel according to any one of claims 1 to 3, wherein a frame is attached.   The roof panel according to claim 1, further comprising a rib disposed in the space portion.   The roof panel according to claim 4, wherein the inner panel portion and the outer panel portion are connected by the rib.   The roof panel according to claim 5, wherein an R portion in which a thickness of the rib of the connecting portion is increased is provided in at least one of the inner panel portion and the outer panel portion of the rib.

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