JP6567913B2 - Vehicle back door - Google Patents

Description

  The present invention relates to a back door of a vehicle such as an automobile.

  As a back door of a vehicle, what is shown by the following patent documents is known conventionally. According to the description of the publication, the back door of the vehicle closes the door opening formed in the rear wall of the vehicle body so as to be openable and closable from the rear thereof, and is made of resin-made back door inner for the purpose of weight reduction. And a back door outer. Therefore, the back door inner and the back door outer are joined by bonding, and are joined so as to seal the inner space by applying an adhesive to the peripheral edges of the inner surfaces of each part.

  Further, an opening for providing an opening / closing mechanism such as a handle for opening / closing the door is provided in a substantially central portion of the back door, and an adhesive surface is also provided around the opening so that the back door inner and the back door outer are provided. Is also adhered to the central portion of the door (see Patent Document 1).

JP 2012-61957 A

  However, the back door of the conventional vehicle has the following problems. In other words, the vicinity of the opening of the back door has a complicated shape compared to the peripheral edge for reasons such as incorporating an opening / closing mechanism, and an ideal state where the adhesive is applied evenly can be obtained. It was difficult. This would reduce the quality of the back door such as waterproofness and strength.

  This invention is made | formed in view of said subject, and it aims at improving the quality of the back door of the vehicle assembled | attached by adhesion | attachment.

In order to achieve the above object, a first aspect of the present invention includes a resin-made back door inner positioned closer to a passenger compartment and a resin-made back door outer positioned close to the vehicle and having an opening. The back door outer and the back door inner have an annular adhesive surface formed around the opening and coated with an adhesive. The bonding surface is formed by sharing, and the bonding surface is formed below the opening and the first bonding surface formed below the opening, and is closer to the vehicle compartment than the first bonding surface. A second adhesive surface that is positioned and a pair of third adhesive surfaces that connect the first adhesive surface and the second adhesive surface with the opening interposed therebetween, and the back door outer includes: each provided with Li on the left and right of the opening Have a, the back door inner has a rib provided adjacent to the ribs of the back door outer, each of the previous SL rib of the back of the door outer rib and the back door inner, the first A pair of ribs provided adjacent to the inner peripheral side and the outer peripheral side of the bonding surface, respectively, wherein the tips of the pair of ribs of the back door outer contact the inner surface of the back door inner. contact, the back said pair of ribs tip of the door inner is in contact with the inner surface of the back door outer, said the back door in Na inside the ribs of each of the pair of ribs of the back door outer It is the back door of a vehicle in which a pair of ribs are located.

  As another aspect of the present invention, the adhesive surface may be formed substantially parallel to a contact surface of an arc centered on the upper end of the back door outer.

  As another aspect of the present invention, an opening / closing handle may be disposed in the opening.

  The present invention as described above has an effect that the quality of the back door of the vehicle assembled by bonding can be improved.

The front view which shows the structure of the back door of the vehicle which concerns on embodiment of this invention. 2A is a cross-sectional view taken along a line AA in FIG. 2B is a cross-sectional view taken along the line BB in FIG. FIG. 3A is an exploded view of FIG. FIG. 3B is an exploded view of FIG. The schematic diagram for demonstrating the manufacturing process of the back door of the vehicle which concerns on embodiment of this invention. The perspective view which shows the structure of the opposing surface with the back door inner of the back door outer of the back door of the vehicle which concerns on embodiment of this invention. Sectional drawing by CC line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a configuration of a back door of a vehicle according to an embodiment of the present invention. FIG. 2 (a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. It is -B sectional drawing.

  As shown in the drawings, the back door 1 of the present embodiment includes a synthetic resin back door inner 10 located near the vehicle compartment and synthetic resin back door outers 11a and 11b located outside the vehicle. And a glass rear windshield 12 that closes the opening 10x provided in the upper center of the back door inner 10 is provided as a main component.

  The back door inner 10 is molded corresponding to the entire surface of the back door 1, and the back door outer 11a is molded corresponding to the shape below the opening 10x of the back door inner 10 and joined to the lower side. Further, the back door outer 11b is molded corresponding to the shape above the opening 10x and joined to the upper side.

  In the back door inner 10, a lock mechanism 14a for closing the back door 1 so as to be freely opened and closed at the rear of the vehicle and a handle 14b for receiving an operation of the lock mechanism 14a are provided immediately below the opening 10x. Note that the back door 1 is opened and closed by rotating the back door outer 11a around the rotation axis O extending on the upper side of the back door inner 10 shown in FIG. 1 by operating the handle 14b.

  Next, as shown in FIGS. 2A and 2B, the back door inner 10 and the back door outer 11a are convex surfaces that bulge from the surface toward the outside of the vehicle corresponding to the storage space of the lock mechanism 14a. Have Further, the back door outer 11a is formed with an opening 11x for exposing the handle 14b at a level difference from the convex surface, covers the opening 11x, and is used for opening and closing the back door 1 in cooperation with the handle 14b. 11y is formed.

  And as shown in FIG. 1, the back door inner 10 and the back door outer 11b are surface-joined between the inner surfaces through the adhesive applied to the adhesive surface 13b along the outline of the back door outer 11b. Similarly, the back door inner 10 and the back door outer 11a are also applied to the adhesive surface 13a along the contour of the back door outer 11a and the annular adhesive surface 13c formed around the opening 11x and the flange 11y. It is surface-joined via.

  Here, as shown in FIGS. 3A and 3B, the bonding surface 13 c corresponds to the cross-sectional shape of the back door 1, and the bonding surface 13 c 1 located on the outer side of the vehicle, located on the vehicle room (not shown). The adhesive surface 13c2 and the adhesive surface 13c3 formed as a surface connecting the adhesive surface 13c1 and the adhesive surface 13c2 are combined.

  2A and 2B, the gap 1x between the back door inner 10 and the back door outer 11a and the gap 1y between the back door inner 10 and the back door outer 11b are the inner surfaces of the respective parts. Without being in close contact with each other, it is formed by maintaining a predetermined interval by way of ribs (not shown) protruding from the surface of the back door inner 10, thereby improving the shock absorption of the back door 1 and maintaining rigidity. Like to do.

  In the above configuration, the back door of the vehicle corresponds to the back door of the vehicle of the present invention, the back door inner 10 corresponds to the back door inner of the present invention, and the back door outer 11a corresponds to the back door outer of the present invention. . The opening 11x corresponds to the opening of the present invention, the bonding surface 13c corresponds to the bonding surface of the present invention, the bonding surface 13c1 corresponds to the first bonding surface of the present invention, and the bonding surface 13c2 corresponds to the first bonding surface of the present invention. 2 and the adhesive surface 13c3 corresponds to the third adhesive surface of the present invention.

  The vehicle back door according to the present embodiment having the above-described configuration is characterized in that the quality is improved by protecting the vicinity of the adhesive surface 13c provided around the opening 11x.

  Hereinafter, a detailed description will be given with reference to FIGS. However, FIG. 4 is a schematic diagram for explaining a joining process of the back door inner 10 and the back door outer 11a, and FIG. 5 is a perspective view showing a configuration of a surface of the back door outer 11a facing the back door inner 10. FIG. 6 is a cross-sectional view taken along the line CC of FIG.

  First, as shown in FIG. 4, the joining of the back door inner 10 and the back door outer 11a is performed as follows. That is, with the upper end of the back door outer 11a engaged with the edge of the opening 10x of the back door inner 10 at the engagement end E, the lower end is swung as indicated by the arrow S in the figure. At this time, the inner surface 10a1 of the back door inner 10 and the inner surface 11a1 of the back door outer 11a are bonded, and the bonding surface 13c1 is bonded, and the inner surface 10a2 of the back door inner 10 and the inner surface 11a2 of the back door outer 11a are bonded. 13c3 is bonded to the inner surface 10a3 of the back door inner 10 and the inner surface 11a3 of the back door outer 11a to form an adhesive surface 13c2, thereby forming an adhesive surface 13c.

  In forming the adhesive surface 13c, the adhesive surface 13c is given a fixed form on the inner surfaces 10a1 to 10a3 of the back door inner 10, and between the back door outer 11a, FIGS. 2 (a) and 2 (b). In order to maintain the gap 1x shown in FIG. 1 and to ensure rigidity, double annular ribs (not shown) corresponding to the outer outline 13o1 and the inner outline 13o2 of the bonding surface 13c shown in FIG. 1 are formed.

  Here, as shown in FIG. 5, the bonding surface 13c1 is positioned above the opening 11x, the bonding surface 13c2 is positioned below the opening 11x, and the bonding surfaces 13c3 are paired and are respectively positioned on the left and right of the opening 11x. By positioning the bonding surface 13c1 and the bonding surface 13c2 so as to connect, an annular bonding surface 13c surrounding the opening 11x as a whole is formed.

  In the present embodiment, the inner surfaces 11a1 and 11a3 on which the bonding surfaces 13c1 and 13c2 are located are formed as planes, while the inner surface 11a2 is provided with a pair of ribs 15 and the bonding surface 13c3 is positioned between the pair of ribs 15. It is characterized by being formed on the flat surface 16.

  That is, by providing the pair of ribs 15 on the inner surface 11a2 of the back door outer 11a, as shown in FIG. 6, the bonding surface 13c3 is formed between the pair of ribs 17 on the back door inner 10 side and the pair of back door outer 11a. It is formed by filling the adhesive 18 in the space surrounded by the ribs 15 in a double manner.

  This has the following effects. That is, as shown in FIG. 4, in joining with the back door inner 10 based on the rotation of the back door outer 11a with the engaging end E as a fulcrum, the inner surface 10a1 of the back door inner 10 and the inner surface of the back door outer 11a. Adhesion with 11a1 and adhesion between the inner surface 10a3 of the back door inner 10 and the inner surface 11a3 of the back door outer 11a are performed in a state in which the crossing angle between the press-contact direction of the panels and the adhesion surface is almost a right angle. As a result, the pressure-bonded adhesive flows sufficiently under the restriction of the pair of ribs 17 on the back door inner 10 side, and the adhesive surfaces 13c1 and 12c2 can be formed in good shape.

  On the other hand, the adhesion between the inner surface 10a2 of the back door inner 10 and the inner surface 11a2 of the back door outer 11a is caused by the adhesion surface 13c2 being located closer to the vehicle compartment than the adhesion surface 13c1, and the pressure contact direction between the panels. And the crossing angle between the adhesive surface and the adhesive surface is substantially parallel. As a result, the pressure contact of the adhesive is not performed satisfactorily and uneven adhesion occurs, making it difficult to form the adhesive surface 13c2 in a good shape even if there is a restriction by the pair of ribs 17 on the back door inner 10 side.

  According to the present embodiment, by providing the rib 15 on the back door outer 11a side and making it double, the adhesive surface 13c3 is separated by the double rib. As a result, as shown in FIG. 6, intrusion of foreign matter such as moisture M from the outside is blocked by the ribs 15 and 17 before reaching the adhesive 18 constituting the bonding surface 13c2, and the application of the bonding surface 13c2 is performed. Regardless of the state, the waterproof performance is improved, and as a result, the quality of the back door 1 can be improved.

  Furthermore, according to the present embodiment, the tips of the ribs 15 and 17 are fixed in contact with the inner surface 10a2 of the back door inner 10 and the inner surface 11a2 of the back door outer 11a facing each other. The strength of the back door 1 can be improved and the quality can be improved against the stress in the direction along the surface direction of the back door inner 10 and the back door outer 11a due to the operation or the like.

  Furthermore, according to the present embodiment, the rib 15 provided on the back door outer 11a can be used for alignment between the back door outer 11a and the back door inner 10, which improves the assembly accuracy in the manufacturing process, It is possible to reduce the attachment time.

  In the above description, the adhesive surface 13c is annular, but the annular adhesive surface of the present invention may be formed continuously around the opening provided in the back door outer, It is not limited by the specific mode, and can take any shape such as a circle, an ellipse, and a rectangle. In addition, although the handle 14b for opening and closing the back door 1 is arranged in the opening 11x, the opening of the present invention may be arranged with a license plate and other mechanisms of the vehicle.

  Furthermore, in the above description, the back door inner 10 and the back door outer 11a have convex surfaces that bulge from the surface toward the outside of the vehicle corresponding to the storage space of the lock mechanism 14a. The adhesive surface according to the present invention is formed based on the shape of the concave portion. The adhesive surface of the present invention is formed below the opening and the first adhesive surface formed below the opening. What is necessary is just to include the 2nd adhesion surface located near the passenger compartment, and a pair of 3rd adhesion surfaces which connect the 1st adhesion surface and the 2nd adhesion surface across the opening, It is not limited by the back door inner and / or other shapes of the back door outer including each bonding surface.

  Furthermore, in the above description, the back door 1 is configured by joining two back door outers 11a and 11b to one back door inner 10. However, even if a single back door outer is used. Good.

As described above, the present invention is a vehicle back door formed by laminating a resin back door inner located near the passenger compartment and a resin back door outer located near the vehicle and having an opening. The back door outer and the back door inner are joined by facing each other's inner surfaces and sharing an annular adhesive surface formed around the opening to which an adhesive is applied, The bonding surface includes a first bonding surface formed above the opening, a second bonding surface formed below the opening and positioned closer to the vehicle compartment than the first bonding surface, Including a pair of third adhesive surfaces that connect the first adhesive surface and the second adhesive surface with the opening interposed therebetween, and the back door outer is provided on each of the left and right sides of the opening. have a rib, said Bakkudoai Na has a rib provided adjacent to the ribs of the back door outer, each of the previous SL rib of the back of the door outer rib and the back door inner, the inner periphery of the third bonding surface A pair of ribs provided adjacent to the side and the outer peripheral side, respectively, wherein tips of the pair of ribs of the back door outer abut against the inner surface of the back door inner, tips of the pair of ribs are in contact with the inner surface of the back door outer, the back door in Na said pair of ribs positioned in the inside of the ribs of each of the pair of ribs of the back door outer It is not limited by other specific purposes, applications, and configurations.

  Therefore, the present invention may be implemented by adding various modifications to the above embodiment, including those described above, as long as they do not depart from the spirit of the present invention.

  The present invention as described above has an effect that it is possible to improve the quality of a back door of a vehicle assembled by bonding, and is useful in application to a back door of an automobile, for example.

1 vehicle back door 1x, 1y clearance 10 back door inner 10a1, 10a2, 10a3, 11a1, 11a2, 11a3 inner surface 10x, 11x opening 11a, 11b back door outer 11y 庇 12 rear window shield 13a, 13b, 13c, 13c1, 13c2 , 13c3 Adhesive surface 13o1, 13o2 Contour 14a Lock mechanism 14b Handle 15, 17 Rib 16 Plane 18 Adhesive

Claims (1)

A resin back door inner located closer to the passenger compartment and a vehicle back door located on the outer side of the vehicle and laminated with a resin back door outer having an opening,
The back door outer and the back door inner are:
The inner surfaces are directly opposed to each other, and are joined by sharing an annular adhesive surface formed around the opening to which an adhesive is applied,
The adhesive surface is
A first adhesive surface formed above the opening;
A second adhesive surface formed below the opening and located closer to the vehicle compartment than the first adhesive surface;
A pair of third adhesive surfaces connecting the first adhesive surface and the second adhesive surface with the opening interposed therebetween,
The back door outer is to have a rib provided on left and right of the opening,
The back door inner has a rib provided adjacent to the rib of the back door outer,
Wherein each of the previous SL rib of the back of the door outer rib and the back door inner is a pair of ribs comprising a rib provided adjacent respectively to the inner and outer circumferential sides of the third bonding surface,
The front ends of the pair of ribs of the back door outer abut on the inner surface of the back door inner,
The front ends of the pair of ribs of the back door inner are in contact with the inner surface of the back door outer,
The pair of ribs of the back door in Na inside the ribs of each of the pair of ribs of the back door outer is located,
Vehicle back door.

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