JP2005329743A - Vehicular door structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular door structure capable of easily and reliably mounting energy absorption members while securing the arrangement space for interior components. <P>SOLUTION: The vehicular door structure comprises an outer panel 11, an inner panel 12, a door lining 13, and energy absorption members 16, 17. Undercut parts 45, 51 in which a bottom side is wider than the opening side are formed on either a door lining base member 15 of the door lining 13 or the energy absorption members 16, 17, and fitting projecting parts 33, 39 to be fitted to the undercut parts 45, 51 are formed to the other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle door structure to which an energy absorbing member can be attached easily and reliably.

As a technique related to a vehicle door structure, there is one that disposes an energy absorbing member that absorbs the collision energy of a side collision by crushing between an inner panel and a door lining disposed on the vehicle interior side. Among them, there is one in which an opening is provided in the inner panel and the energy absorbing member is attached to the inner panel so that a part of the energy absorbing member protrudes between the inner panel and the outer panel from this opening ( For example, see Patent Document 1).
Japanese Patent Laid-Open No. 9-277832

  When the energy absorbing member is protruded from the opening of the inner panel as described above, there is a problem in that the arrangement space of the internal parts between the inner panel and the outer panel is affected.

  Accordingly, an object of the present invention is to provide a vehicle door structure in which an energy absorbing member can be easily and reliably attached while securing an arrangement space for internal components.

  In order to achieve the above object, an invention according to claim 1 includes an outer panel (for example, outer panel 11 in the embodiment), and an inner panel (for example, inner panel 12 in the embodiment) disposed on the vehicle interior side of the outer panel. A door lining (for example, the door lining 13 in the embodiment) disposed on the inner side of the inner panel, and a collision energy from the side disposed between the door lining and the inner panel. The vehicle door structure includes an energy absorbing member (for example, the upper protector 16 and the lower protector 17 in the embodiment) that absorbs at the door, and the door lining is a door lining base material (for example, the door lining base material 15 in the embodiment). The inner surface of the vehicle interior is covered with a skin material (for example, the skin material 20 in the embodiment). An undercut portion (for example, the undercut portions 45 and 51 in the embodiment) whose bottom side is wider than the opening side is formed in one of the door lining base material and the energy absorbing member, and the door lining base material In addition, a fitting convex portion (for example, the fitting convex portions 33 and 39 in the embodiment) that fits into the undercut portion is formed on the other of the energy absorbing members.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the door lining base material is foam-molded so as to absorb the collision energy.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the joint surface (for example, the joint surfaces 38 and 50 in the embodiment) of the door lining base material and the energy absorbing member is the undercut portion and the fitting. It is characterized by a flat surface excluding the joint convex part.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, characterized in that the skin material further covers the door lining base material and the vehicle exterior side surface of the energy absorbing member. Yes.

  According to the first aspect of the present invention, an undercut portion whose bottom side is wider than the opening side is formed in one of the door lining base material and the energy absorbing member, and either the door lining base material or the energy absorbing member is provided on the other side. A fitting convex part to be fitted to the undercut part is formed, and the energy absorbing member is attached to the door lining base material by fitting the undercut part and the fitting convex part. Therefore, since it is not necessary to project the energy absorbing member between the inner panel and the outer panel, it is possible to secure a space for arranging the internal parts between them, and to easily and reliably secure the energy absorbing member. Can be attached.

  According to the invention which concerns on Claim 2, since the door lining base material is foam-molded, an undercut part or a fitting convex part can be easily formed at the time of foam-molding. Further, since the door lining base material is foam-molded so as to absorb the collision energy from the side, the collision energy input to the energy absorbing member is absorbed by the energy absorbing member, and the door lining base is further removed from the energy absorbing member. It can be dispersed and absorbed radially by the material. In other words, by projecting the energy absorbing member between the inner panel and the outer panel, the length of the energy absorbing member in the side collision direction is extended and the crushing stroke is lengthened to improve the energy absorbing efficiency. By forming the material from a foam molding material, it can be used as an energy absorbing member to improve energy absorption efficiency. Furthermore, since the undercut portion and the fitting convex portion whose bottom side is wider than the opening side are fitted, the door lining base material and the energy absorbing member can be firmly joined, and the energy lining member to the door lining base material can be joined. The energy transmission efficiency to the can be improved. In addition, since the door lining base material and the energy absorbing member are separate members, suitable impact absorbing characteristics can be obtained by individually adjusting the performance against each impact. Furthermore, since energy can be absorbed also in the undercut part and fitting convex part which are junction parts, the thickness including a junction part can be made thin.

  According to the invention which concerns on Claim 3, since the joining surface of a door lining base material and an energy absorption member is made into the flat surface except an undercut part and a fitting convex part, an energy absorption member is shared by different vehicle types. And versatility is improved.

  According to the fourth aspect of the invention, since the skin material further covers the exterior surface of the door lining base material and the energy absorbing member, the door lining base material and the energy absorbing member can be reinforced with the skin material, and can be cracked and detached. Etc. can be prevented.

A vehicle door structure according to a first embodiment of the present invention will be described below with reference to FIG.
FIG. 1 shows a cross section orthogonal to the longitudinal direction of the vehicle body when the door structure of the first embodiment is closed.

  The door structure of the first embodiment includes a metal outer panel 11 that is disposed outside the vehicle compartment and forms a design surface outside the vehicle compartment, and a metal inner panel 12 that is disposed on the vehicle interior side of the outer panel 11. And a door lining 13 which is disposed on the inner side of the inner panel 12 and forms a design surface on the inner side of the inner side.

  The door lining 13 has a substantially constant thickness and extends over the entire height of the inner panel 12, and the door lining base 15 is formed on the outside of the vehicle interior of the door lining base 15, that is, on the upper side of the inner panel 12. An upper protector (energy absorbing member) 16 provided between the inner panel 12 and the lower part of the door lining base material 15 on the inner panel 12 side is provided with a door lining base material 15 and an inner panel 12. It has a lower protector (energy absorbing member) 17 provided so as to be disposed therebetween, and a skin material 20 that covers the entire vehicle interior side surface of the door lining base material 15. The door lining base material 15, the upper protector 16, and the lower protector 17 are separately provided.

  The door lining base material 15 includes a lower plate portion 22 extending from the lower end side of the inner panel 12 to the vehicle interior side along the horizontal direction, and an upper edge portion of the lower plate portion 22 extending along the vertical direction from the vehicle interior side edge. The first inner plate portion 23 extending in the vertical direction and extending upward along the vertical direction in a state where the thickness in the vehicle width direction is increased so as to protrude from the upper edge of the first inner plate portion 23 toward the vehicle interior side. A second inner plate portion 24 that protrudes, a third inner plate portion 25 that extends upward from the upper end edge of the second inner plate portion 24 to the outside of the passenger compartment, and extends upward. A fourth inner plate portion 26 projecting upward along the vertical direction in a state where the thickness in the vehicle width direction is increased from the upper end edge of the inner plate portion 25 so as to project outward from the vehicle body, and the fourth inner plate portion 26 A fifth inner plate portion 28 that slightly protrudes obliquely outward and upward from the upper edge of the vehicle interior, and an end edge portion of the fifth inner plate portion 28 outside the passenger compartment. And a top plate portion 29 that protrudes in the vehicle exterior side along the horizontal direction.

  Further, the fourth inner plate portion 26, the fifth inner plate portion 28, and the sixth inner plate portion 29 of the door lining base material 15 protrude outwardly from the vehicle compartment to a position where they abut against the inner panel 12. The upper protector 16 is joined to the upper part. Further, the lower portion of the door lining substrate 15 protrudes to the outside of the vehicle compartment in a continuous range of the lower plate portion 22, the first inner plate portion 23 and the second inner plate portion 24 to a position where it abuts on the inner panel 12. The protector 17 is joined. Note that the lower protector 17 may be separated from the lower plate portion 22, and in this way, the lower protector 17 can be reduced in weight.

  Specifically, the bonding of the door lining base material 15 to the upper protector 16 composed of the outer surface of the fourth inner plate portion 26, the outer surface of the fifth inner plate portion 28, and the lower surface of the upper plate portion 29. A fitting convex portion 33 that protrudes outward from the passenger compartment is formed on the portion of the surface 32 of the fourth inner plate portion 26. The fitting convex portion 33 is inclined so that the upper surface 34 extending from the joining surface 32 is flat and is located on the upper side toward the outer side (projecting tip side) of the passenger compartment, and extends from the joining surface 32. The lower surface 35 is also planar, and is inclined so as to be positioned on the lower side toward the vehicle compartment outer side (projecting tip side). In other words, the fitting convex portion 33 is wider in the vertical direction toward the vehicle compartment outer side (projecting tip side). Moreover, the front end surface 36 connecting the upper surface 34 and the lower surface 35 of the fitting convex portion 33 is also flat and extends in the vertical direction.

  Further, the joint surface 38 to the lower protector 17 composed of the upper surface of the lower plate portion 22 of the door lining substrate 15, the outer surface of the first inner plate portion 23 and the outer surface of the second inner plate portion 24. The fitting convex part 39 which protrudes outside a compartment is also formed in the part of the 1st inner-plate part 23 of the inside. The fitting convex portion 39 is inclined so that the upper surface 40 extending from the joining surface 38 is flat and is located on the upper side toward the outer side of the vehicle interior (the protruding tip side), and extends from the joining surface 38. The lower surface 41 is also planar, and is inclined so as to be positioned on the lower side toward the vehicle compartment outer side (projecting tip side). In other words, the fitting convex portion 39 is wider in the vertical direction toward the vehicle compartment outer side (projecting tip side). Further, the front end surface 42 connecting the upper surface 40 and the lower surface 41 of the fitting convex portion 39 is also flat and extends in the vertical direction. Here, the joint surface 38 on the outer side of the passenger compartment of the first inner plate portion 23 and the second inner plate portion 24 is formed flat except for the fitting convex portion 39.

  The upper protector 16 is formed with an undercut portion 45 that is recessed toward the outside of the vehicle compartment on a surface on the vehicle interior side, that is, a joint surface 44 to the door lining base material 15. The undercut portion 45 is inclined such that the upper surface 46 extending from the joint surface 44 is planar and is located on the upper side toward the outer side (bottom side) of the passenger compartment, and the lower surface 47 extending from the joint surface 44. Is also inclining so as to be positioned on the lower side toward the vehicle compartment outer side (bottom side). In other words, the undercut portion 45 is wider in the vertical direction toward the vehicle compartment outer side (bottom side), and as a result, the bottom side is wider than the opening side. Further, a bottom surface 48 connecting the upper surface 46 and the lower surface 47 of the undercut portion 45 is also flat and extends in the vertical direction.

  The upper protector 16 is attached to the door lining substrate 15 by fitting the fitting convex portion 33 of the door lining substrate 15 to the undercut portion 45. At this time, the upper protector 16 brings the joint surface 44 into close contact with the joint surface 32 of the door lining substrate 15, and the upper surface 46 of the undercut portion 45 is fitted to the fitting convexity of the door lining substrate 15. The entire surface is in close contact with the upper surface 34 of the portion 33. Furthermore, the upper protector 16 will bring the lower surface 47 of the undercut portion 45 into full contact with the lower surface 35 of the fitting convex portion 33 of the door lining base material 15, and the bottom surface 48 of the undercut portion 45 will be in contact with the door. The entire surface of the lining substrate 15 is brought into close contact with the front end surface 36 of the fitting convex portion 33. Here, the upper protector 16 is in close contact with the lower surfaces of the fifth inner plate portion 28 and the upper plate portion 29.

  The lower protector 17 is also provided with an undercut portion 51 that is recessed toward the outside of the vehicle compartment on the surface on the vehicle interior side, that is, the joint surface 50 to the door lining base material 15. The undercut portion 51 is inclined such that the upper surface 52 extending from the joining surface 50 is planar and is located on the upper side toward the outer side (bottom side) of the passenger compartment, and the lower surface 53 extending from the joining surface 50. Is also inclining so as to be positioned on the lower side toward the vehicle compartment outer side (bottom side). In other words, the undercut portion 51 is wider in the vertical direction toward the vehicle interior side (bottom side), and as a result, the bottom side is wider than the opening side. Further, the bottom surface 54 connecting the upper surface 52 and the lower surface 53 of the undercut portion 51 is also planar and extends in the vertical direction. Here, the joint surface 50 on the vehicle interior side of the lower protector 17 is formed flat except for the undercut portion 51.

  The lower protector 17 is attached to the door lining substrate 15 by fitting the fitting convex portion 39 of the door lining substrate 15 to the undercut portion 51. At this time, the lower protector 17 brings the joint surface 50 into close contact with the joint surface 38 of the door lining base material 15, and the upper surface 52 of the undercut portion 51 is fitted to the fitting convexity of the door lining base material 15. The entire surface is in close contact with the upper surface 40 of the portion 39. Further, the lower protector 17 brings the lower surface 53 of the undercut portion 51 into full contact with the lower surface 41 of the fitting convex portion 39 of the door lining base material 15, and the bottom surface 54 of the undercut portion 51 is brought into contact with the door. The lining base material 15 is brought into close contact with the front end surface 42 of the fitting convex portion 39. Note that a protruding edge portion 55 that protrudes outward is formed at the end edge portion on the bonding surface 50 side.

  Here, the lower protector 17 may have a weight shape so that the cross-sectional area becomes smaller toward the outside of the passenger compartment.

  Although not shown, the door lining base material 15 is continuously formed in the longitudinal direction of the vehicle body so as to cover the vehicle interior side of the inner panel 12 almost entirely, whereas the upper protector 16 and the lower protector 17 are formed. Are partially formed at a plurality of appropriate positions in the longitudinal direction of the vehicle body of the door lining substrate 15. Needless to say, at least one of the upper protector 16 and the lower protector 17 may be formed so as to continuously extend in the vehicle front-rear direction in the same manner as the door lining substrate 15.

  The door lining base material 15, the upper protector 16, and the lower protector 17 are each formed by foam molding. Specifically, each of these is formed from expanded polypropylene beads. Although not shown, the expanded polypropylene beads placed in a mold having a cavity matched to each shape are expanded in the mold. It is formed. By being foam-molded in this way, the upper protector 16 and the lower protector 17 can absorb the collision energy from the side, that is, the outside of the passenger compartment and the inner side of the passenger compartment by being crushed. However, it is possible to absorb the collision energy from the side, that is, the outside of the passenger compartment and the inside of the passenger compartment by being crushed.

  A locking plate 58 is joined to the upper end portion of the upper plate portion 29 of the door lining base material 15. The locking plate 58 is joined to the upper plate portion 29 and extends from the upper plate portion 29 to the outside of the passenger compartment, and is bent from the extending front end side of the substrate portion 59 and extends downward. And a locking plate portion 60 to be taken out.

  A clip pedestal 62 is embedded under the lower plate portion 22 of the door lining base material 15 and the lower protector 17 so as to protrude outside the vehicle compartment, and a resin clip 63 is attached to the clip pedestal 62. Yes. The clip pedestal 62 can be bonded to the door lining base material 15 by spin welding or the like and reinforced from above.

  The interior side surface of the door lining substrate 15 formed as described above is entirely covered with a skin material 20 such as a leather sheet or a fabric sheet. Specifically, the skin material 20 includes an end surface of the lower plate portion 22 outside the vehicle compartment, a lower surface of the lower plate portion 22, a vehicle interior side surface of the first inner plate portion 23, and a vehicle interior side surface of the second inner plate portion 24. , A vehicle interior side surface of the third inner plate portion 25, a vehicle interior side surface of the fourth inner plate portion 26, a vehicle interior side surface of the fifth inner plate portion 28, an upper surface of the upper plate portion 29, and a substrate of the locking plate 58 The upper surface of the portion 59, the surface of the locking plate portion 60 on the outer side of the passenger compartment, the lower surface of the locking plate portion 60, the surface of the locking plate portion 60 on the vehicle interior side, and the lower surface of the substrate portion 59 are continuously covered. The skin material 20 is bonded to the door lining substrate 15 at appropriate portions including the upper end side and the lower end side. The skin material 20 may be a single sheet or a laminate of TPO, PP foam, or the like.

  In such a door lining 13, after the upper locking plate 58 is locked to the upper portion of the inner panel 12 from the upper side, the lower resin clip 63 is fitted into the lower mounting hole 65 of the inner panel 12. Thus, the upper protector 16 and the lower protector 17 are joined to the inner panel 12 in this state. A weather strip 68 that seals a gap with the window glass 67 is fixed to the outside of the passenger compartment of the locking plate portion 60 of the locking plate 58 via the skin material 20. Although not shown, the weather strip 68 is fixed by a part of the core member being crimped to the locking plate 60. A weather strip 69 that seals a gap with the window glass 67 is also fixed to the upper portion of the outer panel 11.

  According to the door structure of the first embodiment described above, the upper protector 16 is formed with the undercut portion 45 whose bottom side is wider than the opening side, and the door lining base material 15 is fitted to the undercut portion 45. The upper protector 16 is attached to the door lining base material 15 by forming the joint convex portion 33 and fitting the undercut portion 45 and the fitting convex portion 33. Further, an undercut portion 51 whose bottom side is wider than the opening side is formed in the lower protector 17, and a fitting convex portion 39 that fits the undercut portion 51 is formed in the door lining base material 15, and these undercut portions are formed. The lower protector 17 is attached to the door lining base material 15 by fitting 51 and the fitting convex part 39. Therefore, since it is not necessary to project the upper protector 16 and the lower protector 17 between the inner panel 12 and the outer panel 11, it is possible to secure an arrangement space for internal parts between them, and then the upper protector. 16 and the lower protector 17 can be attached easily and reliably. Here, the undercut portions 45 and 51 may be formed on the door lining base material 15, and the fitting convex portions 33 and 39 may be formed on the upper protector 16 and the lower protector 17. That is, the undercut portion 45 may be formed on one of the door lining base material 15 and the upper protector 16, and the fitting convex portion 33 may be formed on the other of the door lining base material 15 and the upper protector 16, similarly. The undercut portion 51 may be formed on one of the door lining base material 15 and the lower protector 17, and the fitting convex portion 39 may be formed on the other of the door lining base material 15 and the lower protector 17.

  Moreover, since the door lining base material 15 is foam-molded, the fitting protrusions 33 and 39 can be easily formed during foam molding. Similarly, the upper protector 16 and the lower protector 17 can easily form the undercut portions 45 and 51 during foam molding.

  In addition, since the door lining base material 15 is foam-molded so as to absorb the collision energy from the side, the collision energy from the outside of the vehicle compartment input to the upper protector 16 and the lower protector 17 is converted into the upper protector 16 and the lower protector. While being absorbed by the protector 17, the upper protector 16 and the lower protector 17 can be further dispersed and absorbed radially by the door lining substrate 15. That is, by projecting the upper protector 16 and the lower protector 17 between the inner panel 12 and the outer panel 11, the length of the energy absorbing member in the side projecting direction is extended and the crushing stroke is lengthened to improve the energy absorption efficiency. Instead, by forming the door lining base material 15 from a foam molding material, it can be used as an energy absorbing member to improve energy absorption efficiency.

  Further, in order to fit the undercut portions 45 and 51 whose bottom side is wider than the opening side and the fitting convex portions 33 and 39, the door lining base material 15, the upper protector 16 and the lower protector 17 are firmly joined. Thus, the energy transfer efficiency from the upper protector 16 and the lower protector 17 to the door lining substrate 15 can be improved.

  In addition, since the door lining base material 15, the upper protector 16, and the lower protector 17 are separate members, suitable shock absorption characteristics can be obtained by individually adjusting the foaming ratio that determines the performance against each impact. It is done. Furthermore, since the energy can be absorbed also in the undercut portions 45 and 51 and the fitting convex portions 33 and 39 which are joint portions for joining, the thickness including the joint portion can be reduced.

  Furthermore, since the joint surfaces 38 and 50 of the door lining base material 15 and the lower protector 17 are flat surfaces except for the fitting convex portion 39 and the undercut portion 51, the lower protector 17 can be shared by different vehicle types. It becomes possible and versatility improves.

  Next, a vehicle door structure according to a second embodiment of the present invention will be described below with reference to FIG. 2 focusing on the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.

  In the second embodiment, a skin material 100 that is coupled to the skin material 20 and is different from the skin material 20 covers the exterior surface of the door lining base material 15 except for the upper protector 16 and the lower protector 17. ing.

  Specifically, as shown in FIG. 2, in the portion where the upper protector 16 and the lower protector 17 of the door lining base material 15 are joined, the skin material 20 is the end face outside the passenger compartment of the lower plate portion 22, the lower plate portion. 22, a vehicle interior side surface of the first inner plate portion 23, a vehicle interior side surface of the second inner plate portion 24, a vehicle interior side surface of the third inner plate portion 25, and a vehicle interior side of the fourth inner plate portion 26. Front surface, interior surface of fifth inner plate portion 28, upper surface of upper plate portion 29, upper surface of substrate portion 59 of locking plate 58, surface outside locking chamber of locking plate portion 60, locking plate portion 60 The lower surface, the surface on the vehicle interior side of the locking plate portion 60 and the lower surface of the substrate portion 59 are covered, and another skin material 100 covers the vehicle interior outer surface of the third inner plate portion 25. Further, in a portion where the upper protector 16 and the lower protector 17 are not joined, that is, a portion formed only by the door lining base material 15, the skin material 20 covers the vehicle interior side surface of the door lining base material 15. Covers the vehicle exterior side surface of the door lining substrate 15. In addition, you may coat | cover so that the vehicle interior side surface and vehicle interior outer surface of a door lining base material may circulate with one skin material.

  According to such 2nd Embodiment, in addition to having the same effect as 1st Embodiment, in addition to that, in addition to the vehicle interior side surface of the door lining base material 15, the skin material 20 and 100 is a vehicle interior. Since the outer surface is also covered, the door lining base material 15 can be reinforced with the skin materials 20 and 100, and cracking and detachment can be prevented.

It is sectional drawing which shows the door structure of the vehicle of 1st Embodiment of this invention. It is sectional drawing which shows the door structure of the vehicle of 2nd Embodiment of this invention.

Explanation of symbols

11 Outer panel 12 Inner panel 13 Door lining 15 Door lining base material 16 Upper protector (energy absorbing member)
17 Lower protector (energy absorbing member)
20, 100 Surface material 32, 38, 44, 50 Joint surface 33, 39 Fitting convex portion 45, 51 Undercut portion

Claims (4)

An outer panel; an inner panel disposed on the inner side of the outer panel; a door lining disposed on the inner side of the inner panel; and a side disposed between the door lining and the inner panel. A vehicle door structure having an energy absorbing member that absorbs by collapsing the collision energy from the vehicle,
The door lining is configured by covering the interior side surface of the door lining base material with a skin material, and the bottom side of the door lining base material and the energy absorbing member is wider than the opening side undercut. The vehicle door structure is characterized in that a fitting projection is formed on one of the door lining base material and the energy absorbing member to fit the undercut portion.   The vehicle door structure according to claim 1, wherein the door lining base material is foam-molded to absorb the collision energy.   The vehicle door structure according to claim 1 or 2, wherein a joining surface of the door lining base material and the energy absorbing member is a flat surface except for the undercut portion and the fitting convex portion. The vehicle door structure according to any one of claims 1 to 3, wherein the skin material further covers the door lining base material and a vehicle exterior side surface of the energy absorbing member.

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