JP2014019362A - Vehicle door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle door by which joint strength of a joint by a hemming process can be improved with a simple configuration.SOLUTION: A vehicle door has a joint by a hemming process which is closely fixed by sandwiching a part to be sandwiched, which is a marginal part of one of two door composing members that are formed of a metal plate-like material and compose the vehicle door, between a support part formed in a marginal part of the other of the door composing members and a folded-back part facing the support part. The tip of the folded-back part is caused to abut against the part to be sandwiched, and the part to be sandwiched is provided with a protruding stopper part that protrudes in the direction that approaches the folded-back part and engages with the folded-back part.

Description

  The present invention relates to a vehicle door, and more particularly to a joining structure of members constituting the vehicle door.

  In many cases, a door frame or a door panel constituting a vehicle door is configured by combining a plurality of structural members obtained by forming a plate-like material into a required cross-sectional shape by press molding, roll molding, extrusion molding or the like. As a technique for joining and fixing such door constituent members, hemming joining is known in which the edge of one member is folded and the edge of the other member is sandwiched. For example, in patent document 1, the outer member and inner member which comprise the side sash extended in an up-down direction among door frames are joined using hemming joining.

JP 2008-302788 A

  In the hemming joined portion, it is necessary to prevent a joining failure such that the member on the sandwiched side comes out of the joined portion. As countermeasures, it is conceivable to increase the crushing pressure during hemming, but there has been a demand to increase the joining strength more easily and reliably. Then, this invention aims at providing the vehicle door which can improve the joint strength of a hemming process junction part by simple structure.

  The present invention comprises a support portion formed of a metal plate-like material and having a sandwiched portion, which is one edge portion of two door constituting members constituting a vehicle door, formed on the edge portion of the other door constituting member, In a vehicle door having a hemming joint that is sandwiched and fixed by a folded portion facing the support portion, the folded portion is crimped until the tip of the folded portion comes into contact with the sandwiched portion, and the folded portion is folded to the sandwiched portion. A protrusion preventing portion that protrudes in a direction approaching the portion and engages with the folded portion is provided.

  The protruding retaining portion may be formed to protrude at a position adjacent to the tip of the sandwiched portion. Or you may make it form a protrusion securing part in the intermediate position of the width direction away from the front-end | tip of the to-be-clamped part.

  In addition to the sandwiched portion, a second retaining projection that projects in the direction approaching the sandwiched portion can be formed on the folded portion side.

  Although this invention does not ask the formation method of a door structural member, it is good to form the door structural member which has a to-be-clamped part, for example by extrusion molding of a metal material.

  The present invention is suitable for joining members constituting a door frame surrounding a window opening. For example, a door constituent member having a support portion and a turn-back portion may be applied as a constituent member of a vertical sash of a door frame. This door constituent member is formed by press molding of a metal material, and gradually changes the width in the vehicle width direction connecting the vehicle inner side and the vehicle outer side according to the longitudinal position of the upright pillar sash.

  More specifically, one of the two door constituent members is surrounded by a vehicle outer side surface portion and a vehicle inner side surface portion that are spaced apart and opposed to the vehicle outer side and the vehicle inner side, and a connection portion that connects the vehicle outer side surface portion and the vehicle inner side surface portion. The glass run channel has a glass run holding recess that opens to the inner peripheral side of the door frame, and a sandwiched portion projects from the inner side surface of the glass run channel toward the outer side of the vehicle. The other of the two door components is connected to the second outer side surface portion and the second connection portion that are located adjacent to the outer peripheral side of the door frame with respect to the outer side surface portion and the connection portion of the glass run channel, and the second An outer member having an inner projecting frame portion that protrudes inward from the connecting portion and forms a cylindrical section having a closed cross section in combination with the inner side surface portion of the glass run channel, and an edge of the inner projecting frame portion in the outer member A support portion and a turn-back portion are formed on the substrate.

  According to the vehicle door of the present invention described above, the joining strength of the hemming joint can be improved by a simple configuration in which the protruding retaining portion that engages with the folded portion is provided in the sandwiched portion.

It is the side view which looked at the side door for the front seats of the motor vehicle which applies this invention from the vehicle inside. It is a disassembled perspective view of the standing pillar sash which comprises the door of FIG. It is sectional drawing of the standing pillar sash along the AA line of FIG. It is sectional drawing to which the hemming junction part of the glass run channel and outer member which comprises an upright pillar sash was expanded. It is sectional drawing which shows different embodiment of the hemming junction part of a glass run channel and an outer member. It is sectional drawing which shows further another embodiment of the hemming junction part of a glass run channel and an outer member. It is sectional drawing which shows embodiment applied to the hemming junction part of the inner panel and outer panel which comprise a door panel. It is the side view which looked at the side door for the rear seats of the motor vehicle which applies the door frame structure of this invention from the vehicle inner side.

  FIG. 1 shows a side door 10 for the front seat of an automobile. The door 10 includes a door panel 12 having a schematic shape indicated by a two-dot chain line, and a door frame 14 formed in a frame shape on the upper portion of the door panel 12, and includes an upper edge portion of the door panel 12 and an inner edge portion of the door frame 14. A door glass (not shown) moves up and down in the enclosed window opening 16. A glass run 15 (FIG. 3) made of an elastic material is disposed on the inner peripheral side of the door frame 14 facing the window opening 16, and the edge of the door glass is held by the glass run 15. The door frame 14 includes an upper sash 18 that forms an upper edge portion of the door, and an upright column sash 20 that extends upward from the rear portion of the door panel 12, and a rear end portion of the upper sash 18 and an upper end portion of the upright column sash 20. Are joined at the door corner. The door panel 12 is configured by combining an outer panel on the outer side of the vehicle and an inner panel on the inner side of the vehicle, the lower front portion of the upper sash 18 is fixed to the inner panel via a mirror bracket 22, and the lower portion of the upright sash 20 is fixed via a lock bracket 24. Fixed to the inner panel. A beltline reinforcement 26 extending in the vehicle front-rear direction is fixed to the mirror bracket 22 and the lock bracket 24. When the door 10 is closed, the upper sash 18 is positioned along the door opening of the roof panel of the vehicle body (not shown), and the upright sash 20 is positioned along the center pillar of the vehicle body. A weather strip (not shown) made of an elastic material is disposed on the outer peripheral side of the upper sash 18 and the upright pillar sash 20, and when the door 10 is closed, the weather strip is elastically deformed, and between the door 10 and the vehicle body. Block liquid tightly. In the following description, the side facing the window opening 16 in the door frame 14 is called an inner peripheral side, and the side facing the vehicle body opening on the opposite side is called an outer peripheral side. In addition, expressions such as front, rear, upper, lower, vehicle interior, and vehicle exterior refer to directions that are based on the body of the automobile to which the front seat door 10 is attached.

  As shown in FIGS. 2 and 3, the upright pillar sash 20 is configured by combining a glass run channel 42, an outer member 43, and a weather strip channel 44. The glass run channel 42 is a long member formed by extrusion molding or roll molding of an aluminum material, and the vehicle outer wall (vehicle outer surface portion) 45 located on the vehicle outer side and the outer peripheral side end portion of the vehicle outer wall 45 are A glass run holding bottom wall (connecting portion) 46 extending inward, a vehicle inner side wall (vehicle inner side surface portion) 47 extending from the glass run holding bottom wall 46 to the inner peripheral side, and an inner peripheral side end portion of the vehicle inner side wall 47 on the vehicle outer side. And a sandwiched portion 48 formed by bending. The vehicle inner side wall 47 has an outer peripheral side wall portion 47a facing the vehicle outer side wall 45 and an inner peripheral side wall portion 47b not facing the vehicle outer side wall 45, and the inner peripheral side wall portion 47b is located on the vehicle inner side than the outer peripheral side wall portion 47a. ing. The front end of the sandwiched portion 48 is generally at a position where the outer peripheral side wall 47a is extended to the inner peripheral side.

  The outer member 43 is a long member formed by press-molding an aluminum material, and is formed from a vehicle outer wall (second vehicle outer surface portion) 50 located on the vehicle outer side and an inner peripheral side end portion of the vehicle outer wall 50. A bottom wall (second connecting portion) 51 extending to the vehicle inner side, a weather strip contact wall 52 extending from the bottom wall 51 to the vehicle inner side, and a weather strip contact wall 52 from the vehicle inner end to the inner peripheral side A vehicle inner side wall 53 that extends, an inclined wall 54 that gradually moves to the inner peripheral side as it moves away from the vehicle inner side wall 53, and an inner peripheral wall (support) 55 that changes the angle from the inclined wall 54 and extends to the vehicle outer side. The inner peripheral wall 55 has a folded-back portion 56 that is folded back to the outer peripheral side through a U-shaped curved portion 57. A portion from the weather strip contact wall 52 to the folded portion 56 constitutes a bag-like cross-sectionally shaped vehicle inner protruding frame portion 58 that protrudes toward the inner side of the vehicle and opens toward the outer side of the vehicle. Is formed at the edge of the vehicle inner projecting frame portion 58.

  The glass run channel 42 and the outer member 43 are fixed by welding with the bottom wall 51 overlapped on the outer peripheral side of the glass run holding bottom wall 46. Further, the glass run channel 42 and the outer member 43 are also fixed by a hemming joint portion 49 in which the sandwiched portion 48 is sandwiched between the inner peripheral wall 55 and the turned-back portion 56 and fixed. The weather strip channel 44 includes a weather strip holding bottom wall 60 that is fixed to the outer peripheral side of the bottom wall 51 by welding or the like, and a pair of protrusions projecting outward from the outer side and the inner side of the weather strip holding bottom wall 60 to the outer peripheral side. The holding claws 61 and 62 are provided and formed by press molding or roll molding of an aluminum material.

  A portion of the vertical sash 20 surrounded by the vehicle outer wall 45, the glass run holding bottom wall 46, and the vehicle inner wall 47 of the glass run channel 42 constitutes a glass run holding portion 64 for fitting and holding the glass run 15 therein. ing. The glass run holding portion 64 has a bottomed box shape opened toward the inner peripheral side. The glass run 15 held in the glass run holding portion 64 is engaged with the outer surface of the hemming joint 49.

  A portion of the vertical pillar sash 20 surrounded by the outer side wall 50, the bottom wall 51, the weather strip contact wall 52, and the weather strip channel 44 of the outer member 43 is a weather strip holding portion for fitting and holding the weather strip therein. 65 is constituted. The weather strip is prevented from falling off by the holding claws 61 and the holding claws 62 of the weather strip channel 44. When the door 10 is closed, a part of the weather strip comes into contact with the weather strip contact wall 52.

  The opening portion of the outer member 43 facing the vehicle outer side of the vehicle inner protruding frame portion 58 is closed by the vehicle inner side wall 47 of the glass run channel 42, and the portion surrounded by the vehicle inner protruding frame portion 58 and the vehicle inner side wall 47 is a rectangular tube shape. A main frame portion 66 having a (bag-like) hollow cross section is formed. The cross-sectional shape of the main frame portion 66 differs depending on the vertical position of the upright pillar sash 20, and the amount of protrusion of the weatherstrip contact wall 52, the inner peripheral wall 55, and the inclined wall 54 toward the vehicle interior increases as it proceeds downward. That is, the width of the vehicle inner projecting frame portion 58 of the outer member 43 in the vehicle width (door thickness) direction gradually changes so that the main frame portion 66 gradually becomes longer toward the vehicle inner side as it goes downward. The inner projecting frame portion 58 has a cross-sectional shape that is open to the vehicle outer side at any cross-sectional position in the longitudinal direction of the upright pillar sash 20, and as it moves away from the vehicle inner side wall 53 toward the vehicle outer side, the bottom wall 51 and the weather The interval between the outer peripheral wall portion formed of the strip contact wall 52 and the inner peripheral wall portion formed of the inclined wall 54 and the inner peripheral wall 55 is widened. An exterior member (garnish) (not shown) is attached to the vehicle outer wall 45 of the glass run channel 42 and the vehicle outer wall 50 of the outer member 43. As shown in FIG. 1, the vehicle outer side wall 50 of the upright pillar sash 20 gradually increases in width as it progresses downward from above.

  The structure of the hemming joint 49 that joins the glass run channel 42 and the outer member 43 will be described. As shown in FIG. 4, the sandwiched portion 48 at the edge of the glass run channel 42 constituting the hemming joint 49 is formed by bending the inner peripheral side wall 47b of the inner wall 47 to the outside of the vehicle. An inner peripheral wall 55 of the outer member 43 extends along the inner peripheral surface of the sandwiching portion 48. The edge of the inner projecting frame portion 58 of the outer member 43 following the inner peripheral wall 55 is formed on the inner peripheral wall 55 as shown by a two-dot chain line in FIG. 4 before the glass run channel 42 and the outer member 43 are joined. As shown by a solid line in the figure, the curved portion 57 is bent in a U-shape on the outer peripheral side and the folded portion 56 is formed on the inner peripheral wall 55 at the time of hemming joining. It is deformed in such a manner as to overlap the outer peripheral side. At this time, a gap S is formed between the tip of the sandwiched portion 48 and the bending portion 57. The edge portion of the outer member 43 is bent until the tip of the folded portion 56 comes into contact with the outer peripheral surface of the sandwiched portion 48, and is tightly held with the sandwiched portion 48 sandwiched between the inner peripheral wall 55 and the folded portion 56. As a result, it is possible to prevent the sandwiched portion 48 from coming off to the inside of the vehicle.

  In order to further improve the joint strength at the hemming joint 49, a retaining protrusion (projection retaining part) 70 is formed on the sandwiched part 48. The retaining protrusion 70 is a protrusion that protrudes in a direction approaching the folded portion 56 from the surface facing the outer peripheral side of the tip of the sandwiched portion 48. The tip of the retaining protrusion 70 is in contact with the inner peripheral surface of the folded portion 56. When a force in the direction of pulling the sandwiched portion 48 from the inner peripheral wall 55 and the folded portion 56 is applied to the inside of the vehicle, the retaining projection 70 functions to increase the contact pressure with respect to the folded portion 56, and the sandwiched portion 48 comes off. It is surely prevented.

  FIG. 5 shows a different embodiment of the hemming joint 49. As in the embodiment of FIG. 4, a retaining protrusion 70 is formed on the sandwiched portion 48, but a retaining protrusion (second protruding retaining portion) 72 is also formed on the folded portion 56. The retaining protrusion 72 is a protrusion protruding in a direction approaching the sandwiched portion 48 from the surface facing the inner peripheral side of the tip of the folded portion 56, and the distal end of the retaining projection 72 is formed on the outer peripheral surface of the sandwiched portion 48. It is in contact. In addition to the retaining projection 70 of the sandwiched portion 48, the retaining projection 72 is provided on the folded portion 56 side that sandwiches the sandwiched portion 48, so that both the retaining projection 70 and the retaining projection 72 are removed from the sandwiched portion 48. It functions as a protrusion prevention part which prevents, and the joint strength in the hemming joint 49 is further improved.

  FIG. 6 shows a further different embodiment of the hemming joint 49. In this embodiment, a retaining protrusion (protruding retaining portion) 74 in the sandwiched portion 48 is formed in the intermediate portion in the width direction away from the tip of the sandwiched portion 48. The retaining protrusion 74 protrudes from the surface facing the outer peripheral side of the sandwiched portion 48 in a direction approaching the folded portion 56 and is held by contacting the folded portion 56 in the same manner as the retaining projection 70 in FIGS. 4 and 5. It has a function of preventing the part 48 from coming off. The retaining protrusion 74 has a mountain-shaped cross-sectional shape, and a concave portion 76 corresponding to the back surface shape of the retaining protrusion 74 protruding to the outer peripheral side is formed on the surface facing the inner peripheral side of the sandwiched portion 48.

  As can be seen from the above embodiments of FIGS. 4 to 6, in the hemming joint 49 held by the inner peripheral wall 55 and the folded portion 56 with the sandwiched portion 48 held therebetween, the leading end of the folded portion 56 is sandwiched. By forming the retaining protrusions 70 and 74 that engage with the sandwiched portion 48 on the sandwiched portion 48, the bonding strength at the hemming joint 49 can be increased. In addition to this, as in the embodiment of FIG. 5, it is also possible to provide a retaining protrusion 72 on the folded portion 56 side to improve the bonding strength.

  In each of the above embodiments, the present invention is applied to the structure in which the glass run channel 42 and the outer member 43 constituting the upright column sash 20 are fixed. However, the present invention can also be applied to locations other than the upright column sash 20 in the door 10. It is. For example, when the upper sash 18 is composed of a plurality of members, it can be applied to the hemming joining of the members constituting the upper sash. Furthermore, the present invention can be applied not only to the door frame 14 but also to the hemming joining of the constituent members of the door panel 12. FIG. 7 shows an example applied to the hemming joint 149 for fixing the inner panel 76 and the outer panel 78 constituting the door panel 12. A sandwiched portion 80 is formed on the upper edge of the inner panel 76 located on the inner side of the vehicle. On the upper edge of the outer panel 78, there are formed a vehicle outer wall 82 along the vehicle outer side of the sandwiched portion 80, and a folded portion 86 where the region following the vehicle outer wall 82 is folded back to the vehicle inner side through a U-shaped curved portion 84. The folded portion 86 is folded until the tip abuts against the sandwiched portion 80, and sandwiches the sandwiched portion 80 with the vehicle outer side wall 82. A retaining projection 88 that protrudes in a direction approaching the folded portion 86 is formed on the inner surface of the front end of the sandwiched portion 80. The retaining projection 88 engages with the folded portion 86, so that the hemming joint portion is formed. The joint strength of 149 is increased.

  Each of the above embodiments is applied to the side door 10 for the front seat of the automobile, but can be applied to other doors such as the side door 110 for the rear seat shown in FIG. The door 110 includes a door panel 112 and a door frame 114. An upper sash 118 that forms an upper edge of the door, and a vertical pillar sash 120 that extends upward from the front portion of the door panel 112 are provided at the door corner portion at the upper front of the door. They are joined with their end faces in contact with each other. The present invention can be applied to the joining of the constituent members of the door frame 114 and the door panel 112 in the door 110 for the rear seat.

  Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to the illustrated embodiment, and can be improved or modified without departing from the gist of the invention. For example, each member constituting the door frame of the illustrated embodiment is made of aluminum, but the present invention can also be applied to door frames formed of different materials such as iron.

DESCRIPTION OF SYMBOLS 10 Door 12 Door panel 14 Door frame 15 Glass run 18 Upper sash 20 Standing pillar sash 22 Mirror bracket 24 Lock bracket 42 Glass run channel 43 Outer member 44 Weather strip channel 45 Car outer wall 46 Glass run holding bottom wall 47 Car inner side wall 48 Clamping part 49 Hemming joint 50 Car outer wall 51 Bottom wall 52 Weather strip contact wall 53 Car inner wall 54 Inclined wall 55 Inner peripheral wall (support)
56 Folding part 57 Bending part 58 Car interior side projecting frame part 60 Weather strip holding bottom wall 61 62 Holding claw 64 Glass run holding part 65 Weather strip holding part 66 Main frame part 70 Stop protrusion (projecting stopper part)
72 Retaining protrusion (second protruding retaining part)
74 Retaining protrusion (Projection retaining part)
80 Clamped portion 82 Car outer wall 84 Curved portion 82 Car inner wall 88 Retaining protrusion 110 Door 112 Door panel 114 Door frame 149 Hemming joint

Claims (7)

A sandwiched portion, which is one edge portion of two door constituent members that are formed of a metal plate-like material and constitute a vehicle door, is opposed to a support portion formed on the edge portion of the other door constituent member and the support portion. In the vehicle door having a hemming joint that is tightly fixed between the folded portion
The front end of the folded portion is brought into contact with the sandwiched portion; and a projecting retaining portion that projects from the sandwiched portion in a direction approaching the folded portion and engages with the folded portion;
A vehicle door characterized by the following. The vehicle door according to claim 1, wherein the protruding retaining portion is formed to protrude at a position adjacent to a tip of the sandwiched portion. 3. The vehicle door according to claim 1 or 2, wherein the door constituting member having the sandwiched portion is formed by extrusion molding of a metal material. 4. The vehicle door according to claim 1, further comprising: a vertical pillar sash that forms a door frame that surrounds the window opening and extends in a vertical direction, and the door constituent member having the support portion and the folding portion is a metal. A vehicle door which is formed by press molding of a material to constitute the vertical pillar sash, and gradually changes the width in the vehicle width direction connecting the vehicle inner side and the vehicle outer side according to the longitudinal position of the vertical pillar sash. The vehicle door according to any one of claims 1 to 4, wherein the two door constituting members constitute a door frame surrounding a window opening,
One of the two door constituent members is surrounded by a vehicle outer side surface portion and a vehicle inner side surface portion that are spaced apart and opposed to the vehicle outer side and the vehicle inner side, and a connection portion that connects the vehicle outer side surface portion and the vehicle inner side surface portion. It is a glass run channel having a glass run holding recess that opens to the circumferential side, and the sandwiched portion protrudes from the vehicle inner side surface toward the vehicle outer side,
The other of the two door constituent members is a second vehicle outer surface portion and a second connection portion located adjacent to the door frame outer peripheral side with respect to the vehicle outer surface portion and the connection portion of the glass run channel, An outer member having a vehicle inner projecting frame portion that protrudes from the second connection portion to the vehicle inner side and forms a cylindrical portion having a closed cross-section in combination with the vehicle inner side surface portion of the glass run channel; The folding portion is a vehicle door formed at an edge of the vehicle inner protruding frame portion. 2. The vehicle door according to claim 1, wherein the protruding retaining portion is formed to project at an intermediate position in a width direction away from a tip of the sandwiched portion. The vehicle door according to any one of claims 1 to 6, wherein a second retaining projection that projects in a direction approaching the sandwiched portion is formed on the folded portion.

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