JP2009018768A - Door structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure of an automobile capable of surely transmitting load in a side collision to a vehicle body side by a connection with a door hinge member, while arranging an impact bar at the vehicle outside in a door panel. <P>SOLUTION: In this door structure, a door side hinge bracket 73 mounted on a front wall part 51 of an inner panel 5 of the door panel constituting a door 1 and the impact bar 6 bridged in the longitudinal direction in the door 1 are provided. The door inner panel 5 has a side wall part 52 extending from a vehicle outer end side of the front wall part 51 to the front. A front end of the impact bar 6 is mounted on the front wall part 51. The door side hinge bracket 73e is provided with an impact bar mounting surface 73e extending along a side wall part 52 of the inner panel 5 from the vehicle outside end part and mounted with a front end of the impact bar 6 by holding the side wall part 52. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door structure of an automobile including a door panel constituting a side door, a door side hinge member attached to an inner panel front wall portion of the door panel, and an impact bar bridged in the front-rear direction inside the side door. .

  Conventionally, in the door structure of an automobile, in order to improve the collision safety performance of the vehicle, it has been studied how to transmit the load acting on the side door at the time of a side collision of the vehicle to the vehicle body side. A structure has been proposed.

  Among these, Patent Document 1 below proposes a structure in which an end portion of an impact bar bridged in the front-rear direction inside the side door is overlapped with a door hinge member of the side door via a mounting bracket.

  According to the following Patent Document 1, since the impact bar is connected to the door hinge member, the load can be transmitted from the impact bar to the frame member of the vehicle body, and thereby the load can be dispersed. It is going to be.

JP 2004-51034 A

  By the way, in the said patent document 1, the edge part of an impact bar is fastened by the door hinge member so that the front wall part formed in a vehicle inner side rather than an inner panel side wall part may be pinched | interposed in a door panel, and, thereby, an impact bar is made inside a vehicle. It has an intricate structure.

  For this reason, in the structure disclosed in Patent Document 1, a time lag occurs between the moment when the side collision occurs until the load is applied to the impact bar, and the load is quickly transmitted to the vehicle body side and dispersed. There is a problem that can not be.

  Therefore, by projecting a part of the mounting bracket from the inner panel front wall toward the outside of the vehicle and attaching the end of the impact bar to the protruding part of the outside end of the vehicle, the impact bar is further arranged outside the vehicle. It is possible to make it.

  However, when such a structure is employed, there is a problem that the mounting bracket is easily deformed at the protruding portion. For this reason, when a large load is applied to the impact bar, the mounting bracket is deformed before the load is transmitted to the vehicle body, and the impact bar connected to the impact bar is displaced to the inside of the vehicle along with the deformation. Get.

  An object of the present invention is to provide an automobile door structure in which a load at the time of a side collision can be reliably transmitted to a vehicle body side by being connected to a door hinge member while arranging an impact bar on the outside of the vehicle inside the door panel. And

  An automobile door structure according to the present invention includes a door panel constituting a side door, a door-side hinge member attached to an inner panel front wall portion of the door panel, and an impact bar bridged in the front-rear direction inside the side door. The inner panel has a side wall portion extending forward from the vehicle outer end side of the front wall portion, and the front end of the impact bar is attached to the inner panel side wall portion. The member includes an impact bar mounting portion that extends from the vehicle outer side end portion along the inner panel side wall portion and to which the front end of the impact bar is mounted across the side wall portion.

According to this configuration, the impact bar is disposed on the vehicle exterior side by attaching the front end of the impact bar to the impact bar mounting portion extending along the side wall of the door inner panel from the vehicle outer end portion of the door side hinge member. can do.
Furthermore, since it can connect with the door side hinge member so that it may overlap with the inner panel side wall part, the load at the time of vehicle side collision can be reliably transmitted to the vehicle body side by an impact bar.

  In one embodiment of the present invention, the impact bar is a member formed by press working, and a front end is directly attached to the inner panel side wall.

  According to this configuration, a special bracket for mounting the impact bar becomes unnecessary, and the number of parts can be reduced accordingly.

  In one embodiment of the present invention, the door-side hinge member includes a fastening part along the inner panel front wall part, and a hinge shaft attaching part extending forward from the fastening part, and the impact bar attaching part is , And formed across the fastening portion and the hinge shaft mounting portion.

  According to this configuration, it is possible to improve the rigidity of the impact bar mounting portion by forming the impact bar mounting portion across a plurality of portions.

  In one embodiment of the present invention, the door-side hinge member is attached to the inner panel front wall at two upper and lower portions, and includes the impact bar attaching portion at the top and bottom, and the front end of the impact bar is It is arrange | positioned so that it may overlap with an upper and lower impact bar attaching part by a side view, and is attached to the said upper and lower impact bar attaching part.

  According to this structure, the attachment rigidity to the door side hinge member of an impact bar can be improved more.

  In one embodiment of the present invention, the upper and lower impact bar mounting portions are continuously connected and integrally formed.

  According to this configuration, it is possible to transmit the load acting on the side door to the vehicle body side via the connecting portion in the event of a vehicle side collision while improving the rigidity of the impact bar mounting portion.

  In one embodiment of the present invention, the door-side hinge member is attached to the inner panel front wall at two upper and lower locations, and the impact bar mounting portion is provided on either one of the upper and lower sides. The portion is connected to the other side where the impact bar mounting portion is not provided.

  According to this configuration, even when the front end of the impact bar cannot be mounted on both the upper and lower sides due to circumstances such as a limited space for the impact bar, while improving the rigidity of the impact bar mounting portion, The load acting on the door can be distributed and transmitted to both the upper and lower sides by the connecting portion, whereby the load transmission efficiency can be improved.

According to this invention, the impact bar is disposed on the vehicle exterior side by attaching the front end of the impact bar to the impact bar mounting portion extending along the side wall of the door inner panel from the vehicle outer end portion of the door side hinge member. can do.
Furthermore, since it can connect with the door side hinge member so that it may overlap with the inner panel side wall part, the load at the time of vehicle side collision can be reliably transmitted to the vehicle body side by an impact bar.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, the first embodiment shown in FIGS. 1 to 5 will be described. FIG. 1 is an external side view showing a door structure of an automobile according to the present embodiment, FIG. 2 is an enlarged view of a main part showing a peripheral portion of the door hinge member, and FIG. 3 is a perspective view showing the door hinge member. In the figure, the arrow (F) indicates the front of the vehicle, the arrow (R) indicates the rear of the vehicle, the arrow (IN) indicates the inside of the vehicle, and the arrow (OUT) indicates the outside of the vehicle.

  As shown in FIG. 1, the door 1 includes a door body 2 and a door sash 3, and the door body 2 is configured by joining a door outer panel 4 as a door panel and a door inner panel 5. ing. An impact bar 6 is provided inside the door (specifically, inside the door main body 2) as shown in FIG.

  The impact bar 6 is a member for preventing the door main body 2 from entering the vehicle compartment at the time of a vehicle-side collision, and is a member formed by pressing a band-shaped metal plate.

  The door 1 is supported at the front portion of the vehicle body frame through a pair of upper and lower door hinge members 7 and 8 so as to be opened and closed, and the impact bar 6 has a front end extending to the upper door hinge member 7.

  Here, the door hinge member 7 will be described as an example. As shown in FIGS. 2 and 3, the door hinge member 7 mainly includes a vehicle body side hinge bracket 71, a hinge shaft 72, and the hinge shaft 72. The door side hinge bracket 73 is pivotally supported by the vehicle body side hinge bracket 71. The vehicle body side hinge bracket 71 and the door side hinge bracket 73 are metal members having a thickness of about 4 (mm), and both have high rigidity.

  The vehicle body side hinge bracket 71 is formed so as to be substantially L-shaped in plan view, and is fixed to the vehicle body side at the vehicle inner side end portion 71a in the vehicle width direction, while at the vehicle outer side end portion 71b, the upper and lower sides thereof are fixed. The door side hinge bracket 73 is pivotally supported via the hinge shaft 72.

  The door-side hinge bracket 73 has a substantially hat shape in side view as shown in FIGS. 2 and 3 by bending a single metal plate X1 as shown in FIG. The door-side hinge bracket 73 is formed with fastening surfaces 73b and 73b in which fastening holes 73a and 73a are formed vertically.

  Further, in the door side hinge bracket 73, the nuts 9a and 9a and the bolts 10 and 10 of the nut plate 9 shown in FIGS. 2 and 5 (however, FIG. 5 is a cross-sectional view taken along line AA in FIG. 2) The upper and lower fastening surfaces 73b and 73b are fastened along the front wall portion 51 of the door inner panel 5 shown in FIG.

  Further, in front of the fastening surfaces 73b and 73b, as shown in FIG. 2, FIG. 3, and FIG. 5, it extends forward from there toward the hat-shaped protruding portion, and is inserted through holes 73c and 73c (see FIG. 4). Are formed with hinge shaft mounting surfaces 73d and 73d. The hinge shaft 72 is inserted into the insertion holes 73c and 73c, and the door 1 including the door outer panel 4 and the door inner panel 5 and the door side hinge bracket 73 can rotate with respect to the vehicle body side hinge bracket 71. It has become.

  Here, as shown in FIG. 5, the vehicle body side hinge bracket 71 is fixed to the hinge pillar 11 constituting the vehicle body side panel member, whereby the door 1 can be opened and closed with respect to the vehicle body.

  Moreover, in this embodiment, as shown in FIGS. 2-5, the door side hinge bracket 73 is set to the side wall part 52 (refer FIG. 5) of the door inner panel 5 from the vehicle outer side edge part of the lower fastening surface 73b. An impact bar mounting surface 73e extending forward is provided.

  And in the door inner panel 5, the side wall part 52 has extended ahead from the vehicle outer end side of the front wall part 51, and the front end of the impact bar 6 is attached to the impact bar attachment surface 73e so that the side wall part 52 may be pinched | interposed. .

  Further, as shown in FIG. 5, the impact bar 6 is fastened to the side wall 52 and the impact bar mounting surface 73 e by bolts 12 and nuts 13, and the front end thereof is directly attached to the side wall 52. In order to realize such a configuration, the impact bar attaching surface 73e is provided with a fastening hole 73f as shown in FIG.

  As described above, the front end of the impact bar 6 is attached to the impact bar attachment surface 73e extending along the side wall portion 52 of the door inner panel 5 from the vehicle outer side end portion of the door side hinge bracket 73 constituting the door hinge member 7. Thus, the impact bar 6 can be disposed outside the vehicle. For this reason, the load which acts on the impact bar 6 at the time of a vehicle side collision can be quickly transmitted to the hinge pillar 11 (vehicle body side).

  Here, at the time of a vehicle side collision, the door 1 tends to bend toward the inside of the vehicle due to the action of a load, so the front end of the door 1 is pulled in the direction indicated by the arrow α in FIG. Since the impact bar 6 is connected to the door-side hinge bracket 73 so as to overlap the side wall portion 52 of the door inner panel 5, the load can be reliably transmitted to the hinge pillar 11 (vehicle body side).

  Further, since the front end of the impact bar 6 formed by press working is directly attached to the side wall portion 52 of the door inner panel 5 as described above, a special bracket for attaching the impact bar 6 becomes unnecessary. Therefore, the number of parts can be reduced accordingly.

(Second Embodiment)
In addition, in 1st Embodiment shown in FIGS. 1-5, although the impact bar attachment surface 73e is formed so that it may extend continuously from the lower fastening surface 73b, in addition to this, as shown in FIG. The lower hinge shaft attaching surface 73d may be provided with a joining piece 73g, and the upper end of the impact bar attaching surface 73e may be joined thereto.

  In the present embodiment, as shown in FIG. 7, the joining piece portion 73g is formed so as to protrude from the lower hinge shaft attachment surface 73d in the plate material X2, and when joining with the impact bar attachment surface 73e, As shown in FIG. 6, the tip is bent downward and joined to the upper end of the impact bar mounting surface 73e by a method such as welding.

  In this case, the impact bar mounting surface 73e can be formed so as to straddle the fastening surface 73b and the hinge shaft surface 73d, and the rigidity of the impact bar mounting surface 73e can be improved. For this reason, the deformation | transformation of the door hinge member 7 at the time of a vehicle side collision can be suppressed, and the load which acts at the time of a side collision can be more reliably transmitted to the vehicle body side.

(Third embodiment)
Further, in the first and second embodiments described above, the impact bar mounting surface 73e is provided only on the lower side of the door-side hinge bracket 73. However, as shown in FIG. 73e may be provided.

  In the present embodiment, as shown in FIG. 9, the plate material X3 forming the door-side hinge bracket 73 is formed substantially symmetrical in the vertical direction, and corresponds to each impact bar mounting surface 73e, 73e, similar to the second embodiment. The joining piece parts 73g and 73g are provided.

  In this case, as shown in FIG. 10, the front end of the impact bar 6 is disposed so as to overlap the upper and lower impact bar mounting surfaces 73e and 73e in a side view, and the side wall 52 ( (See FIG. 5). For this reason, the mounting rigidity of the impact bar 6 to the door side hinge bracket 73 can be further improved, and the load can be more reliably transmitted to the vehicle body side.

(Fourth embodiment)
Further, when the impact bar mounting surfaces 73e and 73e are provided on both upper and lower sides as in the third embodiment, as shown in FIG. 11, a connecting portion 73h continuously extending from one impact bar mounting surface 73e toward the other. May be formed, and the upper and lower impact bar mounting surfaces 73e, 73e may be connected and integrally formed.

  In the present embodiment, as shown in FIG. 12, the plate member X4 forming the door-side hinge bracket 73 includes a connecting portion 73h that protrudes in a strip shape from the lower impact bar mounting surface 73e, and this connecting portion 73h In the middle, it is joined to the lower joining piece portion 73g, and at its tip, it is joined to the upper joining piece portion 73g. In the present embodiment, with such a configuration, the upper and lower impact bar mounting surfaces 73e and 73e are connected via the connecting portion 73h and the joining piece portion 73g.

  As described above, in the present embodiment, the upper and lower impact bar mounting surfaces 73e and 73e are configured to be connected to each other. 1 can be transmitted to the vehicle body side via the connecting portion 73h.

  In addition, although it has the structure provided with the connection part 73h which protrudes from the lower impact bar attachment surface 73e in the thing of illustration, conversely, the connection part which protrudes from the upper impact bar attachment surface 73e is provided. You may make it prepare.

(Fifth embodiment)
13 and 14 show a case where the connecting portion 73i is formed in the case where the impact bar mounting surface 73e is provided on only one of the upper and lower sides of the door side hinge bracket 73. FIG.

  In this embodiment shown in FIGS. 13 and 14, as shown in FIG. 14, the plate material X5 forming the door-side hinge bracket 73 protrudes from the lower impact bar mounting surface 73e in a band shape as in the fourth embodiment. While the connection portion 73i is provided, only the joining piece portion 73g ′ is provided on the upper side not provided with the impact bar mounting surface 73e.

  Here, as shown in FIG. 13, the joining piece portion 73g ′ is bent so that the tip thereof faces the impact bar mounting surface 73e side, and the connecting portion 73i is joined to the lower end of the joining piece portion 73g ′ at the tip. Has been.

  In this case, the front end of the impact bar 6 is fastened only to the impact bar mounting surface 73e provided on the lower side. The impact bar mounting surface 73e is connected to the upper joint piece 73g ′ by the connecting portion 73i. By being connected, a load acting on the door 1 at the time of a vehicle side collision can be transmitted not only downward but also upward.

  For this reason, even when the front end of the impact bar 6 cannot be attached to the upper and lower sides of the door-side hinge bracket 73, the load is applied to the upper and lower sides by the connecting portion 73i while improving the rigidity of the impact bar attaching surface 73e. It becomes possible to transmit in a distributed manner, thereby improving the load transmission efficiency. The configuration according to the present embodiment is particularly effective when the front end of the impact bar 6 cannot be placed on the top and bottom of the door-side hinge bracket 73 due to circumstances such as a limited space for placing the impact bar 6.

  In addition, in 2nd-5th embodiment, about the component similar to 1st Embodiment demonstrated with reference to FIGS. 1-5, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

In correspondence between the configuration of the present invention and the above-described embodiment,
The impact bar mounting portion of the present invention corresponds to the impact bar mounting surface 73e,
Similarly,
The door side hinge member corresponds to the door side hinge bracket 73,
The fastening portion corresponds to the fastening surface 73b,
The hinge shaft mounting portion corresponds to the hinge shaft mounting surface 73d,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

1 is an external side view showing a door structure of an automobile according to a first embodiment of the present invention. The principal part enlarged view which shows a door hinge member periphery part. The perspective view which shows a door hinge member. The expanded view of the board | plate material which comprises a door side hinge bracket. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The perspective view which shows the door hinge member which concerns on 2nd Embodiment of this invention. The expanded view of the board | plate material which comprises a door side hinge bracket. The perspective view which shows the door hinge member which concerns on 3rd Embodiment of this invention. The expanded view of the board | plate material which comprises a door side hinge bracket. The principal part enlarged view which shows a door hinge member periphery part. The perspective view which shows the door hinge member which concerns on 4th Embodiment of this invention. The expanded view of the board | plate material which comprises a door side hinge bracket. The perspective view which shows the door hinge member which concerns on 5th Embodiment of this invention. The expanded view of the board | plate material which comprises a door side hinge bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Door 5 ... Door inner panel 6 ... Impact bar 7 ... Door hinge member 51 ... Front wall part 52 ... Side wall part 73 ... Door side hinge bracket 73b ... Fastening surface 73d ... Hinge shaft attachment surface 73e ... Impact bar attachment surface

Claims (6)

A door panel constituting the side door;
A door side hinge member attached to an inner panel front wall portion of the door panel;
An impact bar bridged in the front-rear direction inside the side door;
While the inner panel has a side wall portion extending forward from the vehicle outer end side of the front wall portion,
A front door of the impact bar is an automobile door structure attached to the inner panel side wall,
The door structure of the motor vehicle provided with the impact bar attaching part which the said door side hinge member was extended along the inner panel side wall part from the vehicle outer side edge part, and the front end of the said impact bar was attached on both sides of this side wall part. 2. The automobile door structure according to claim 1, wherein the impact bar is a member formed by press working, and a front end is directly attached to the inner panel side wall. The door side hinge member includes a fastening portion along the inner panel front wall portion, and a hinge shaft mounting portion extending forward from the fastening portion,
The automobile door structure according to claim 1, wherein the impact bar mounting portion is formed across the fastening portion and the hinge shaft mounting portion. The door-side hinge member is attached to the inner panel front wall at two upper and lower locations, and includes the impact bar mounting portion at the top and bottom.
The front end of the impact bar is disposed so as to overlap the upper and lower impact bar mounting portions in a side view, and is attached to the upper and lower impact bar mounting portions. Door structure. The automobile door structure according to claim 4, wherein the upper and lower impact bar mounting portions are continuously connected and integrally formed. The door-side hinge member is attached to the inner panel front wall at two upper and lower locations, and includes the impact bar mounting portion on one of the upper and lower sides.
The door structure for an automobile according to any one of claims 1 to 3, wherein the impact bar mounting portion is connected to the other side where the impact bar mounting portion is not provided.

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