Side Door for Vehicle

Abstract

To provide a vehicular side door having high reliability and excellent productivity.SOLUTION: A vehicular side door 1 has: a resin outer panel 21 having a window opening 23; a resin inner panel 22 which is located on an in-vehicle side of the outer panel 21, and is joined to the outer panel 21 along a lower edge BL of the window opening 23 by an adhesive 4; and a belt molding 5 which is attached to a junction 24 between the outer panel 21 and the inner panel 22. A positioning hole 26a is formed at the junction 24 of the inner panel 24, and a positioning boss 25a to be inserted into the positioning hole 26a is formed at the junction 24 of the outer panel 21. The outer panel 21 and the inner panel 22 are joined in a state that the positioning boss 25a is inserted into the positioning hole 26a and is projected toward an in-vehicle side of the inner panel 22 by only a preset length.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a vehicle side door.

Background Art

[0002] In a vehicle side door, a belt molding is attached along the lower edge (belt line) of a window opening to seal a gap between an outer panel and a window panel that constitute a door body. Generally, when the door body is made of metal, a folded-back portion by hemming is formed at an end of the outer panel corresponding to the belt line, and the belt molding is attached so as to engage with this folded-back portion (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, in order to further reduce the weight of a vehicle body, as a vehicle side door, one in which both an outer panel and an inner panel constituting a door body are made of resin has been increasingly adopted. In such a resin side door, since hemming cannot be performed in the first place, in order to ensure the rigidity of the panel, it is necessary to bond the outer panel and the inner panel with an adhesive along the belt line, and attach a belt molding to the plate-like joint thus formed. However, in such a method, in terms of the manufacturing method, variations in the thickness of the joint are likely to occur inevitably during mass production. As a result, there is a risk of leading to a decrease in reliability and productivity, such as the belt molding being easily detached from the joint or it being difficult to attach the belt molding to the joint.

[0005] Therefore, an object of the present invention is to provide a vehicle side door with high reliability and excellent productivity.

Means for Solving the Problems

[0006] In order to achieve the above object, the vehicle side door of the present invention includes a resin outer panel having a window opening, a resin inner panel disposed on the vehicle interior side of the outer panel and joined to the outer panel by an adhesive along the lower edge of the window opening, and a belt mold attached to the joint portion between the outer panel and the inner panel. A positioning hole is formed in the joint portion of the inner panel, a positioning boss to be inserted into the positioning hole is formed in the joint portion of the outer panel, and the outer panel and the inner panel are joined in a state where the positioning boss is inserted into the positioning hole and protrudes by a preset length on the vehicle interior side of the inner panel.

Effects of the Invention

[0007] As described above, according to the present invention, it is possible to provide a vehicle side door with high reliability and excellent productivity.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification, as the side door for a vehicle of the present invention, a slide door that slides the door opening on the side surface of the vehicle body in the vehicle longitudinal direction to open and close will be described as an example. However, the side door for a vehicle of the present invention is not limited to this, and it may be a hinged door that rotates around a hinge to open and close the door opening.

[0010] FIG. 1(a) is a side view of the vehicle side door according to an embodiment of the present invention as viewed from the outside of the vehicle, and FIG. 1(b) is a side view of the region surrounded by the broken line in FIG. 1(a) as viewed from the inside of the vehicle. FIGS. 2, 3, 4, and 5 are cross-sectional views taken along the A-A line, B-B line, C-C line, and D-D line of FIG. 1(b), respectively. In FIG. 1(b), only the outer panel and the inner panel of the door body constituting the vehicle side door are shown for ease of viewing.

[0011] The vehicle side door (hereinafter, also simply referred to as "side door") 1 of the present embodiment is a slide-type side door that slides the door opening of the left rear seat of the vehicle in the vehicle longitudinal direction to open and close, and has a door body 2 and a resin door trim (not shown), which is an interior material provided on the vehicle interior side of the door body 2.

[0012] The door body 2 has an outer panel 21 and an inner panel 22 disposed on the vehicle interior side of the outer panel 21. The outer panel 21 is made of resin, preferably made of polypropylene compound, sheet molding compound (SMC) which is a sheet obtained by impregnating an unsaturated polyester resin with glass fiber or carbon fiber, or made of polycarbonate, and more preferably made of polypropylene compound. The inner panel 22 is also made of resin, preferably made of SMC, or made of a composite material (polypropylene compound) of glass fiber or carbon fiber and polypropylene resin. The door body 2 is constituted, for example, by bonding the peripheral portions of the outer panel 21 and the inner panel 22 with an adhesive. The door trim is detachably attached to the door body 2 so as to cover the vehicle interior side of the inner panel 22 by, for example, resin-made clips.

[0013] An approximately rectangular window opening 23 is formed in the upper part of the door body 2, and a window panel 3 for opening and closing the window opening 23 is provided between the inner panel 22 and the door trim. Further, a plate-shaped joint portion 24 is formed in the door body 2 along the lower edge of the window opening 23, that is, along the belt line BL. The joint portion 24 is formed by bonding the outer panel 21 and the inner panel 22 with an adhesive 4, and a resin-made belt mold 5 is attached to the joint portion 24 so as to sandwich it. The belt mold 5 seals the gap between the outer panel 21 and the window panel 3 and also functions as a decorative member that covers the joint portion 24 between the outer panel 21 and the inner panel 22.

[0014] The belt mold 5 is formed by extrusion molding and has a main body portion 50 having a reverse U-shaped cross section composed of an outer side wall 51 on the vehicle exterior side, an inner side wall 52 on the vehicle interior side, and an upper wall 53. The main body portion 50 has an outer seal lip 54 and a holding lip 55 provided on the outer side wall 51 on the vehicle exterior side, and an inner seal lip 56, a protrusion 57, and a locking portion 58 provided on the inner side wall 52 on the vehicle interior side.

[0015] The outer seal lip 54 extends obliquely downward from the lower end of the outer side wall 51 toward the inner side of the vehicle and contacts the outer panel 21, suppressing the intrusion of water into the vehicle along the outer panel 21 and having a function of restricting the downward movement of the belt mold 5. The holding lip 55 is provided on the inner surface of the outer side wall 51 of the vehicle and has a function of fixing the belt mold 5 to the joint portion 24 by sandwiching the joint portion 24 together with the protruding portion 56 provided on the outer surface of the inner side wall 52 of the vehicle facing this. The inner seal lip 57 extends obliquely upward from the upper end of the inner side wall 52 toward the inner side of the vehicle and contacts the wind panel 3, suppressing the intrusion of water into the vehicle along the wind panel 3 and having a function of removing dirt and moisture adhering to the surface of the ascending and descending wind panel 3. The locking portion 58 curves outward from the lower end of the inner side wall 53 (the inner tip of the main body portion 50) and locks to the locking claw 27 of the joint portion 24 described later, having a function of restricting the upward movement of the belt mold 5 and suppressing the belt mold 5 from coming off the joint portion 24.

[0016] By the way, compared with the case of a folded-back portion formed by hemming processing formed at the end of a metal panel, the thickness of the joint portion formed by bonding the ends of two resin panels as in this embodiment with an adhesive is inevitably likely to vary during mass production. That is, each resin panel has variations in plate thickness and surface accuracy that occur during molding, and it is difficult for the adhesive to always reproduce the same coating thickness. Therefore, the thickness of the joint portion composed of two resin panels is likely to vary. For this reason, if the thickness of the joint portion becomes thinner than the specified thickness, the belt mold is likely to come off from the joint portion, and if it becomes thicker than the specified thickness, it becomes difficult to attach the belt mold to the joint portion, which may lead to a decrease in reliability and productivity.

[0017] Therefore, in the present embodiment, as a mechanism for appropriately controlling the thickness of the joint portion 24, positioning bosses 25a and positioning holes 26a are formed on the outer panel 21 and the inner panel 22, respectively. Specifically, a plurality of through holes 26 are formed along the vehicle front-rear direction at the position of the joint portion 24 of the inner panel 22, and positioning bosses 25a are formed at the position of the joint portion 24 of the outer panel 21 corresponding to the positioning holes 26a at both ends. The positioning boss 25a is inserted into the positioning hole 26a when the outer panel 21 and the inner panel 22 are joined via the adhesive 4, and at that time, it has a length that only protrudes from the inner panel 22 toward the vehicle interior side. Then, the outer panel 21 and the inner panel 22 are joined using, for example, a dedicated jig so that the protruding length becomes a preset length.

[0018] As a result, even if there are variations in the plate thickness and surface accuracy of the outer panel 21 and the inner panel 22, or there are variations in the coating thickness of the adhesive 4, it is possible to keep the distance between the outer surface of the outer panel 21 on the vehicle exterior side and the inner surface of the inner panel 22 on the vehicle interior side at the joint portion 24 uniform. That is, it is possible to suppress variations in the thickness of the joint portion 24, suppress the occurrence of problems related to the attachment of the belt molding 5, and improve reliability and productivity. In addition, by suppressing variations in the thickness of the joint portion 24, variations in the attachment position of the belt molding 5 in the vehicle width direction can also be suppressed. Therefore, it is possible to suppress the displacement in the vehicle width direction from the belt molding similarly attached to the front side door, and maintain a good appearance.

[0019] In addition, the positioning boss 25a and the positioning hole 26a enable not only the positioning of the outer panel 21 and the inner panel 22 in the vehicle front-rear direction as described above, but also the positioning in the vehicle vertical direction. That is, by joining the outer panel 21 and the inner panel 22 in a state where the positioning boss 25a engages with the upper edge or the lower edge of the positioning hole 26a, the positioning of both in the vehicle vertical direction can also be performed. Therefore, variations in the mounting position of the belt molding 5 in the vehicle vertical direction can be suppressed, and displacement in the vehicle vertical direction between the belt molding of the front side door can also be suppressed. The positioning boss 25a and the positioning hole 26a may be provided only in a pair, but in terms of improving the accuracy of such positioning, it is preferable that they are provided in pairs at both ends in the vehicle front-rear direction of the joint portion 24 as in the present embodiment.

[0020] Whether or not the thickness of the joint portion 24 is appropriately controlled can be easily confirmed by visually checking whether the protruding length of the positioning boss 25a from the inner panel 22 is a preset length. Therefore, in order to appropriately manage the thickness of the joint portion 24 and improve productivity, it is also conceivable that three or more pairs of the positioning boss 25a and the positioning hole 26a may be provided. However, for the positioning of the outer panel 21 and the inner panel 22 in the vehicle vertical direction, it is necessary and sufficient that the positioning boss 25a and the positioning hole 26a are provided in pairs at both ends in the vehicle front-rear direction of the joint portion 24 as described above.

[0021] Therefore, in the present embodiment, among the plurality of through holes 26 of the inner panel 22, a non-engagement hole 26b is provided at the center in the vehicle front-rear direction (between the positioning holes 26a at both ends), and the lower edge of the non-engagement hole 26b is located below the positioning hole 26a. Correspondingly, a non-positioning boss 25b similar to the positioning boss 25a is provided on the outer panel 21. When the outer panel 21 and the inner panel 22 are joined, the non-positioning boss 25b is inserted into the non-engagement hole 26b and protrudes inward of the vehicle by a preset length from the inner panel 22, but does not engage with the non-engagement hole 26b. Thereby, in order to properly manage the thickness of the joint portion 24, the protruding length of the non-positioning boss 25b from the inner panel 22 can also be visually confirmed. For this reason, the number of the non-positioning boss 25b and the non-engagement hole 26b is not limited to one pair, and may be two pairs or more.

[0022] At the joint portion 24 of the inner panel 21, locking claws 27 protruding inward from the upper edge of the through hole 26 are respectively formed intermittently along the vehicle front-rear direction, specifically, at positions corresponding to the plurality of through holes 26. The locking claw 27 has a function of restricting the upward movement of the belt mold 5 by engaging the locking portion 58 of the belt mold 5 and suppressing the belt mold 5 from coming off the joint portion 24.

[0023] The locking claw 27 also has a function of defining the vertical position of the belt molding 5 with respect to the inner panel 22. Therefore, the position of the locking claw 27 in the longitudinal direction of the vehicle is not particularly limited, but is preferably a position corresponding to a plurality of through holes 26 as shown in the figure. This is because the positioning of the belt molding 5 is also performed at the position where the outer panel 21 is positioned with respect to the inner panel 22 (that is, the position where the plurality of through holes 26 are formed), so that an improvement in the positioning accuracy of the belt molding 5 with respect to the outer panel 21 can be expected. However, the locking claw 27 does not necessarily have to be formed intermittently, and may be continuously formed along a line connecting the upper edges of the plurality of through holes 26. On the other hand, the vertical position of the locking claw 27 may be above the plurality of through holes 26 as long as the positioning boss 25a engages upward with the positioning hole 26a, for example, and does not have to be at the upper edge of the through hole 26.

[0024] In the above-described embodiment, an example is illustrated in which the joining portion 24 is formed by joining the outer panel 21 and the inner panel 22, and the wind panel 3 is disposed on the inner side of the vehicle therefrom. However, the present invention is not limited to this. For example, in order to form the joining portion 24, a reinforcement panel different from the inner panel 22 may be joined along the belt line BL of the outer panel 21, and the inner panel 22 may be disposed further inside the vehicle than the wind panel 3. In that case, the reinforcement panel joined to the outer panel 21 corresponds to the "inner panel" of the present invention.

Explanation of Reference Numerals

[0025] 1 Side door for vehicle 2 Door body 21 Outer panel 22 Inner panel 23 Window opening 24 Joining portion 25a Positioning boss 25b Non-positioning boss 26 Through hole 26a Positioning hole 26b Non-positioning hole 27 Locking claw 4 Adhesive 5 Belt maw 50 Body part 51 Outer vehicle side wall 52 Inner vehicle side wall 53 Upper wall 54 Outer vehicle side seal lip 55 Holding lip 56 Inner vehicle side seal lip 57 Protrusion 58 Locking part

Claims

1. A resin outer panel having a window opening, A resin inner panel disposed on the vehicle interior side of the outer panel and joined to the outer panel by an adhesive along the lower edge of the window opening, A belt molding attached to the joint between the outer panel and the inner panel, and A positioning hole is formed in the joint of the inner panel, and a positioning boss to be inserted into the positioning hole is formed in the joint of the outer panel. The outer panel and the inner panel are joined in a state where the positioning boss is inserted into the positioning hole and protrudes inward of the vehicle by a preset length from the inner panel. A vehicle side door.

2. The positioning boss and the positioning hole are provided at both ends in the vehicle longitudinal direction of the joint portion. The vehicle side door according to claim 1.

3. The outer panel and the inner panel are joined in a state where the positioning boss engages with the upper edge or the lower edge of the positioning hole. The vehicle side door according to claim 2.

4. An unpositioning hole is formed between the positioning holes in the vehicle longitudinal direction in the joint portion of the inner panel, and an unpositioning boss that is inserted into the unpositioning hole and protrudes inward of the vehicle by a preset length from the inner panel but does not engage with the unpositioning hole is formed in the joint portion of the outer panel. The vehicle side door according to claim 3.

5. A plurality of through holes including the positioning holes are formed in the joint portion of the inner panel along the vehicle longitudinal direction, and locking claws that protrude inward of the vehicle above the plurality of through holes and extend continuously or intermittently along the vehicle longitudinal direction are formed. The belt molding curves from the tip on the vehicle interior side of the main body portion having an inverted U-shaped cross section toward the vehicle exterior side, and has a locking portion that locks to the locking claw. The vehicle side door according to claim 3 or 4.

6. The positioning boss engages with the lower edge of the positioning hole, and the locking claw is formed along a line connecting the upper edges of the plurality of through holes. The vehicle side door according to claim 5.

7. The locking claw is intermittently formed at positions corresponding to the plurality of through holes. The vehicle side door according to claim 6.

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