JP4250134B2 - Vehicle door structure - Google Patents

Description

  The present invention relates to a vehicle door structure including a door sash formed by extrusion molding.

  2. Description of the Related Art Conventionally, a door structure of a vehicle such as an automobile is known in which a door sash that guides the vertical movement of a rear end portion of a door glass is provided. Generally, the door sash has a run channel into which the rear end portion of the door glass is fitted and guides the vertical movement of the door glass, and a bulging portion having a closed cross section adjacent to the run channel, It is configured by joining a plurality of parts composed of extruded members, roll-formed members, or press-formed members.

There is also known a vehicle door structure in which a sealing material is integrally formed on a door sash (see, for example, Patent Document 1).
JP 10-193976 A (all pages)

The conventional door sash described above has a problem in that the production cost increases because a plurality of parts are combined.
Further, in the door structure of a vehicle having a door sash, it has been desired to increase the rigidity of the door sash.
Furthermore, for example, when forming a door sash having a divergent design, it is necessary to configure a plurality of parts that are processed in accordance with the design, which makes it difficult to form the door sash.

Accordingly, a first object of the present invention is to provide a vehicle door structure capable of reducing the cost and increasing the rigidity of the door sash.
Another object of the present invention is to provide a vehicle door structure that can increase the degree of freedom of door sash design.

In order to achieve the first object, a vehicle door structure according to the present invention is a vehicle door structure having a door sash for holding a door glass and a door body to which the door sash is fixed. The door sash is integrally formed with a plurality of closed cross sections by extrusion molding, and the plurality of closed cross sections are positioned at least on the vehicle interior side of the vehicle door opening rim. a first closed cross-section portion that abuts, is located in the vehicle outer side of the vehicle, have a second closed cross-section portion which partially forms the outer surface of the door body, the first closed-section portion is The lower portion of the second closed cross-section portion is inlayed with the door body, and the lower portion of the second closed cross-section portion extends downward from the first closed cross-section portion and is fixed to the door main body. To do.

  According to such a vehicle door structure, a door sash having a plurality of closed cross-section portions integrally formed by extrusion molding is provided, and at least the first closed cross-section portion is a contact portion with a door opening peripheral portion. And a part of the second closed cross-section can be used as the exterior surface of the door body, so that there is no complication of composing a door sash by combining multiple types of parts as in the prior art. Thus, it is possible to obtain a door structure that can reduce costs and increase rigidity. Further, since the door sash is formed by integrally forming a plurality of closed cross sections by extrusion molding, a vehicle door structure that is simple and excellent in design can be obtained.

In addition, since the lower portion of the first closed cross-section portion is in-lobe coupled to the door body, a step at the coupling portion can be eliminated, and the sealing performance with the door opening peripheral portion of the vehicle can be improved. Moreover, since the lower part of the second closed cross-sectional portion extends downward from the first closed cross-sectional portion and is fixed to the door body, the lower portion of the first closed cross-sectional portion is the door main body. Combined with the in-row coupling, the door structure of the vehicle in which the mounting rigidity of the door sash with respect to the door body is enhanced is obtained.

  Furthermore, it is preferable that a holding portion for holding the door run channel is formed by the side portion of the first closed cross-section portion and the side portion of the second closed cross-section portion.

  According to such a vehicle door structure, the rigidity of the holding portion for holding the door run channel can be increased, and the door glass can be smoothly raised and lowered. Further, since the rigidity of the holding part is increased, the vibration of the door glass is suppressed and the quietness is improved.

  In order to solve the second problem, a vehicle door structure according to the present invention includes an end portion extending in the front-rear direction of the vehicle at a portion forming the exterior surface of the second closed cross section. The configuration.

  According to such a vehicle door structure, the portion forming the exterior surface of the second closed cross-sectional portion includes the end portion extending in the front-rear direction of the vehicle, and thus the extended end portion is arbitrarily selected. The shape of the exterior surface can be formed by cutting into the shape of the door, and the degree of freedom in designing the door sash can be increased. For example, the door sash can be widened by cutting the extended end into a tapered shape. Therefore, unlike the conventional case, it is possible to easily form a door sash having excellent design properties by eliminating the complexity of combining a plurality of types of parts that have been processed according to a predetermined design in advance.

According to the present invention, it is possible to obtain a vehicle door structure capable of reducing the cost and increasing the rigidity of the door sash.
In addition, a vehicle door structure that can increase the degree of freedom in designing the door sash is obtained.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the drawings to be referred to, FIG. 1 is a side view of an automobile to which a vehicle door structure according to an embodiment of the present invention is applied, and FIG. 2 is a view similarly showing the door structure of the vehicle. FIG. 3 is an enlarged perspective view of the door sash and the door body as seen from the inside of the vehicle, and FIG. 4 is an enlarged exploded perspective view for explaining the door structure of the vehicle. In the following description, “front” is the vehicle traveling direction side, “rear” is the vehicle reversing direction side, “upper” is the vertical upper side, “lower” is the vertical lower side, and “left and right” is the vehicle width direction. Let it be the side.

  As shown in FIG. 1, in the present embodiment, a description will be given taking hinge doors (hereinafter referred to as a left front door, hereinafter simply referred to as a door) disposed on the left and right sides of the vehicle body as an example. In addition, it does not specifically limit as a form of a door, It can apply also to the gull wing type door etc. which are arrange | positioned at the rear part of a sliding door or a vehicle body.

  The door includes a door sash 20 for holding the door glass G and a door body 1 to which the door sash 20 is fixed. The door includes an outer panel (not shown) installed on the outside of the door body 1, a window device (not shown) for raising and lowering the door glass G, a lining (not shown) installed on the inside of the door body 1, and the like. Yes.

The door body 1 is a member that becomes a skeleton of the door, and is formed of, for example, a light metal such as an aluminum alloy or a magnesium alloy.
As shown in FIGS. 2 to 4, the door body 1 includes a front frame member 11 provided on the front side of the vehicle, a rear frame member 12 provided on the rear side of the vehicle, a front frame member 11 and a rear frame member 12. Are connected to each other, an upper inner frame 13 provided on the inner side of the vehicle, an upper outer frame 14 provided on the outer side of the upper inner frame 13, a door sash 20 that supports the door glass G (see FIG. 1), and a front frame A lower frame 16 for connecting the member 11 and the rear frame member 12, a door beam 17 as a reinforcing member for the door body 1, and hinge members 18 and 18 for rotatably installing the door body 1 on the vehicle body are mainly used. It is configured. In the door main body 1, the front frame member 11, the rear frame member 12, the upper inner frame 13, the upper outer frame 14, and the lower frame 16 form a cross-shaped frame. An outer panel (not shown) is fixed to the peripheral edge of the cross-shaped frame portion of the door body 1 by using hemming and a structural adhesive in combination.

  First, each member which comprises the door main body 1 is demonstrated. The front frame member 11 is a member constituting a skeleton on the front side of the door body 1 and is formed of a light metal such as an aluminum die cast product formed by an aluminum die cast mold. The front frame member 11 includes a sash mounting portion 11a to which the front door sash 15 is fixed, an engagement groove 11b to which the upper inner frame 13 is fixed, and an fixing surface 11c to which the upper outer frame 14 and an outer panel (not shown) are fixed. A bracket 19 to which the door beam 17 is fixed, a connecting portion 11e to which the lower frame 16 is fixed, a front side surface 11f on which hinge members 18 and 18 are provided, and an outer peripheral edge portion 11h to which an outer panel (not shown) is fixed. Have. A sash mounting portion 11a, an engaging groove 11b, a fixing surface 11c, a bracket 19 and an upper hinge member 18 are disposed at the upper end portion of the front frame member 11, and at the lower portion of the front frame member 11, a connecting portion 11e and A lower hinge member 18 is disposed, and an outer peripheral edge portion 11 h is disposed at the front end and the lower end of the front frame member 11.

The sash attachment portion 11a is a place where the front lower portion 15a of the front door sash 15 is engaged with the upper end portion of the front frame member 11 and fixed with a structural adhesive. The sash mounting portion 11a is formed with a notch portion 11g into which the front lower portion 15a of the front door sash 15 is fitted. A structural adhesive is applied to the sash attachment portion 11a, and the front door sash 15 is fixed by the structural adhesive. As the structural adhesive, for example, an epoxy-based aluminum alloy adhesive is used.
The engaging groove 11b is a substantially U-shaped groove formed in the lower rear part in the vicinity of the sash mounting part 11a. In the engaging groove 11b, the front end part 13a of the upper inner frame 13 is for structural use. In addition to being fitted through an adhesive, it is also fixed using a rivet (not shown).
The fixing surface 11c is a flat surface formed on the front side of the engaging groove 11b, and the front end portion 14a of the upper outer frame 14 and the upper end portion of the outer panel are connected to the fixing surface 11c with a structural adhesive. It is bonded and fixed by rivets (not shown).

Next, the rear frame member 12 will be described with reference to FIGS.
The rear frame member 12 is a member that forms a skeleton on the rear side of the door body 1, and is formed of, for example, a light metal such as an aluminum die cast product formed by an aluminum die cast mold. The rear frame member 12 has a sash mounting portion 12a to which the door sash 20 is fixed, an engagement groove 12b to which the upper inner frame 13 is fixed, a fixing surface 12c to which the door beam 17 is fixed, and a lower frame 16 to be fixed. And a connecting portion 12d.

The rear frame member 12 is provided with the sash mounting portion 12a and the engagement groove 12b at the upper portion, and with a fixing surface 12c and a connecting portion 12d at the lower portion.
The sash mounting portion 12a is formed with a substantially U-shaped coupling portion in plan view to which a lower portion 21a of a door sash 20 described later is coupled in-situ.
A flat attachment portion 12e to which the lower portion 22a of the door sash 20 is attached is formed below the sash attachment portion 12a. The engagement groove 12b is a substantially U-shaped groove formed in the front portion in the vicinity of the sash mounting portion 12a, and the rear end portion 13b of the upper inner frame 13 is fitted into the engagement groove 12b. And fixed by a structural adhesive.
The fixing surface 12c is a flat surface formed at the lower front end portion of the rear frame member 12, and the rear end portion 17b of the door beam 17 is fixed to the fixing surface 12c with a structural adhesive.
The connecting portion 12d has a symmetrical shape with the connecting portion 11e described above, is formed to project from the lower portion of the rear frame member 12 toward the front frame member 11, and is fixed to the lower frame 16 and an outer panel (not shown). Yes.

  Next, the door sash 20 which is a characteristic structure of this invention is demonstrated with reference to FIGS. 5A is an enlarged cross-sectional view of the door sash taken along the line aa in FIG. 1, and FIG. 5B is an enlarged cross-sectional view of the door opening rim of the automobile and the door sash taken along the line aa in FIG. 6 is a perspective view showing attachment of the door sash to the sash attachment portion, and FIGS. 7A and 7B are cross-sectional views of the first closed cross-section portion and the sash attachment portion taken along line bb in FIG. FIGS. 8A and 8B are diagrams illustrating the coupling state of the door sash in the sash mounting portion. FIG. 8A is a perspective view seen from obliquely above, and FIG. 8B is a perspective view seen obliquely from below.

As described above, the door sash 20 of the present embodiment is integrated by so-called in-lobe coupling of the lower portion 21 a to the sash mounting portion 12 a of the door body 1. The inlay coupling will be described later.
As shown in FIGS. 5A and 5B, the door sash 20 has a substantially L-shaped cross section in which two closed cross sections are integrally formed by extrusion molding, and is located on the inner side of the automobile C. Then, the first closed cross-section portion 21 that is in contact with the door opening peripheral edge portion C1 of the automobile C, and the second closed cross-section portion 22 that is located outside the automobile C and partially forms the exterior surface D1 of the door. And have.

As shown in FIG. 5B, the first closed cross-section portion 21 is a cross-section in which the side (side surface) that contacts the vehicle body-side weather strip W1 attached to the door opening peripheral edge portion C1 is formed in an uneven shape in plan view. It has a substantially pentagonal shape, and the vehicle body-side weather strip W1 comes into contact with the corner portion 21 ′ that is a protruding portion.
As shown in FIGS. 6, 7 (a) and 7 (b), the lower portion 21 a of the first closed cross-section portion 21 is in a state where the diameter is reduced to a portion coupled to the sash mounting portion 12 a of the door body 1. A step portion 21 c is formed, and a lower portion 21 a of the first closed cross-section portion 21 is provided on the inner wall 12 a ′ of the sash attachment portion 12 a of the door body 1 so as to be able to be inlayed. In addition, in the state where the inlay is coupled, the outer surface of the sash mounting portion 12a of the door body 1 and the outer surface of the first closed cross-sectional portion 21 are substantially flush (see FIGS. 8A and 8B). The dimensions of each part are set.

  Further, as shown in FIG. 6, the second closed cross-section portion 22 has a substantially long rectangular shape, the end portion D2 of the exterior surface D1 extends toward the rear of the automobile C, and the vehicle body-side weather strip. It comes into contact with W2 (see FIG. 5B). In the present embodiment, the end portion D2 of the exterior surface D1 extends a certain length rearward of the automobile C over the longitudinal direction (vertical direction) of the door sash 20.

  The second closed cross-section portion 22 has a lower portion 22a extending longer than the first closed cross-section portion 21, and as shown in FIGS. 8 (a) and 8 (b), the side portion of the door body 1 is provided. On the other hand, a structural adhesive (not shown) and a rivet are used in combination. In the present embodiment, as shown in FIG. 8B, the first closed cross-section portion 21 side 21b remains along the lower portion 22a of the second closed cross-section portion 22 in the first state. The closed cross-section portion 21 is provided by being cut out, and the connecting portion 21 d is arranged so as to be in close contact with the corner portion 1 a of the door body 1. In addition, in order to avoid interference with the overhang | projection part 1b of the door main body 1, the edge part D2 is notched in the lower part 22a of the 2nd closed cross-section part 22. FIG.

  In such a portion surrounded by the side portion 21b of the first closed cross-section portion 21 and the side portion 22b of the second closed cross-section portion 22, the rear end of the door glass G as shown in FIG. A portion G1 is arranged, and a holding portion 23 for engaging and holding a door run channel (not shown) that holds the rear end portion G1 of the door glass G and slides and guides it in the vertical direction is formed. Yes.

  Here, as shown in FIG. 5B, the vehicle body-side weather strip W1 includes a hollow inner seal portion W11 that elastically contacts the first closed section 21 of the door sash 20, and a door opening peripheral portion. And a holding portion W12 having a plurality of holding pieces W12a held by C1. The vehicle body-side weather strip W2 includes a hollow seal portion W21 that elastically contacts the end D2 of the second closed section 22 of the door sash 20, and a door opening (not shown) is formed by the plurality of holding pieces W22. It is attached to the periphery.

  In the present embodiment, the upper end portion of the door sash 20 is configured to be connected to the front door sash 15 by welding. The front door sash 15 may be integrally formed with the door sash 20.

  Further, as shown in FIG. 4, the upper inner frame 13 has a front end 13a fixed to the front frame member 11, a rear end 13b fixed to the rear frame member 12, and attached to the upper end. The guide portion 13c shown in FIG. 1 is integrally formed.

  The upper outer frame 14 is disposed substantially parallel to the vehicle outer side of the upper inner frame 13, the front end portion 14 a is fixed to the front frame member 11, and the rear end portion 14 b is fixed to the rear frame member 12, and is provided at a plurality of locations. The lower portion 14c is fixed to an outer panel (not shown) by an adhesive seal member.

  The door beam 17 is a reinforcing member made of a light metal such as an aluminum alloy, for example, and is formed of a tubular member having a substantially rectangular cross section disposed obliquely with respect to the door body 1. The door beam 17 is connected in a state where the mounting position of the front end portion 17a is higher than the mounting position of the rear end portion 17b.

  The vehicle door structure described above includes the door sash 20 in which a plurality of closed cross sections are integrally formed by extrusion molding, and the first closed cross section 21 is contacted with the door opening peripheral edge C1. Since it can be used as a contact portion, and a part of the second closed cross-section portion 22 can be used as the exterior surface D1 of the door body 1, a plurality of parts are combined as in the prior art to constitute a door sash. There is no complexity, a cost can be reduced, and a door structure that can increase rigidity can be obtained. Further, since the door sash 20 is formed by integrally forming the two closed cross sections 21 and 22 by extrusion molding, a vehicle door structure that is simple and excellent in design is obtained.

  Further, since the lower portion 21a of the first closed cross-section portion 21 is in-joined with the sash attachment portion 12a of the door body 1, a step at the joining portion can be eliminated, and the vehicle door opening peripheral portion C1 (FIG. 5). (B) can be improved.

  Further, the second closed cross-section portion 22 has a lower portion 22 a that extends downward from the first closed cross-section portion 21 and is fixed to the door body 1. Coupled with the inlay coupling of the lower portion 21a to the sash attachment portion 12a of the door body 1, a vehicle door structure in which the attachment rigidity of the door sash 20 to the door body 1 is enhanced is obtained.

  Further, since the holding portion 23 for holding the door run channel is formed by the side portion 21b of the first closed cross-section portion 21 and the side portion 22b of the second closed cross-section portion 22, the rigidity of the holding portion 23 is determined. The door glass G can be raised and lowered smoothly. Further, since the rigidity of the holding portion 23 is increased, the vibration of the door glass G is suppressed and the quietness is improved.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented.
9 and 10 show a modification of the embodiment. FIG. 9 is a side view of a door sash in a vehicle door structure according to a modification of the embodiment (a part of the correspondence with the sectional shape of the door sash is shown), and FIG. 10 is a perspective view of the door sash.

As shown in FIGS. 9 and 10, the vehicle door structure of this modification is different in that the door sash 20 ′ is formed in a wide end shape that is wide from the upper part to the lower part.
The exterior surface D1 of the second closed cross section 22 is formed so that the dimension L2 of the lower end D2B is wider than the dimension L1 of the upper end D2A. It has a divergent shape.
Such a door sash 20 ′ is formed by extruding the end portion of the exterior surface D1 of the second closed cross-section portion 22 in advance so as to have a widened shape (a size having the dimension L2). It can be easily formed by cutting diagonally. Therefore, unlike the conventional case, it is possible to easily form the door sash 20 ′ having excellent design without the trouble of combining a plurality of types of parts processed in advance according to a predetermined design. it can. Moreover, since the door sash 20 'can be formed by general extrusion molding, an advantage of excellent productivity can be obtained. Moreover, since the exterior surface D1 can be made into an arbitrary shape by cutting, a vehicle door structure with a high degree of freedom in design can be obtained.

  In the above-described embodiment, the example in which the closed cross-section portions formed on the door sashes 20 and 20 ′ are two is shown, but the present invention is not limited to this, and three or more may be provided. Moreover, a suitable shape can be employ | adopted for the shape of a closed cross-section part.

1 is a side view of an automobile to which a vehicle door structure according to an embodiment of the present invention is applied. It is a figure which similarly shows the door structure of a vehicle, and is an expanded perspective view of a door sash and a door main body seen from the vehicle outer side. FIG. 3 is an enlarged perspective view of the door sash and the door body as seen from the inside of the vehicle. It is an expansion exploded perspective view for explaining the door structure of vehicles similarly. (A) is an expanded sectional view of the door sash in the aa line of FIG. 1, (b) is an expanded sectional view of the door opening peripheral part of a motor vehicle and the door sash in the aa line of FIG. It is a perspective view which shows attachment of the door sash with respect to a sash attachment part. (A) and (b) are explanatory drawings of the inlay coupling | bonding which cut and represented the 1st closed cross-section part and the sash attachment part by the bb line | wire of FIG. It is a figure which shows the attachment state of the door sash in a sash attachment part, (a) is the perspective view seen from diagonally upward, (b) is the perspective view seen from diagonally downward. It is a side view of a door sash in a door structure of a vehicle concerning a modification of an embodiment (a part of correspondence relation with a sectional shape of a door sash is shown). It is a perspective view of a door sash similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door main body 12a Sash attachment part 12e Attachment part 14 Upper outer frame 20 Door sash 20 'Door sash 21a Lower part 21 Closed cross-section part 21' Corner | angular part 21b Side part 21c Step part 22 Closed cross-section part 22a Lower part 22b Side part 23 Holding part C Automobile C1 Door opening peripheral edge D1 Exterior surface D2 End G Door glass G1 Rear end

Claims (3)

A door structure of a vehicle having a door sash for holding a door glass and a door main body to which the door sash is fixed,
The door sash is integrally formed with a plurality of closed cross sections by extrusion,
The plurality of closed cross-section portions are located at least on the vehicle inner side, a first closed cross-section portion contacting the door opening peripheral portion of the vehicle, and on the vehicle outer side of the vehicle, and a part thereof have a second closed cross-section portion forming the exterior surface of the door body,
The lower portion of the first closed cross-section portion is inlayed with the door body, and the lower portion of the second closed cross-section portion extends downward from the first closed cross-section portion, so that the door main body is extended. A door structure of a vehicle characterized by being fixed to the door. The vehicle according to claim 1, wherein a holding portion for holding the door run channel is formed by a side portion of the first closed cross-section portion and a side portion of the second closed cross-section portion. Door structure. The site forming the exterior surface of the second closed cross-section portion, the door structure according to claim 1 or claim 2, characterized in that it comprises an end portion extending in the longitudinal direction of the vehicle.

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