JP7393740B2 - Structure of vehicle component joints - Google Patents

Description

The present invention relates to a structure of a member joint of a vehicle.

Generally, a vehicle is made up of multiple types of members, such as members made of metal materials, members made of glass, and members made of resin materials. In vehicles having such different materials, it is necessary to join members made of different materials. For example, Patent Document 1 discloses joining a metal hinge reinforcement, a resin upper outer panel, a resin inner panel, and a back window glass.

In this example, a resin upper outer panel is bonded to the surface of the metal hinge reinforcement with adhesive, and a resin inner panel is bonded to the back surface of the hinge reinforcement with adhesive, resulting in a three-layer structure. is disclosed. Furthermore, this example discloses a structure in which a back window glass is bonded to the surface of the upper outer panel with an adhesive, and a hinge reinforcement is bonded to the back surface of the upper outer panel with an adhesive.

Japanese Patent Application Publication No. 2011-136606

Normally, when bonding a glass member and a resin part made of a difficult-to-bond material such as polypropylene (PP) with an adhesive, the adhesive interface between the resin part and the adhesive and the adhesive interface between the adhesive and the glass member are Adhesive strength is different. In such a case, if the adhesive itself has sufficient strength and the adhesive layer formed by curing the adhesive is unlikely to break, the adhesive interface between the resin part and the adhesive, It is more likely to peel off than other parts.

In a case like the above example, since each member is bonded with a separate adhesive layer, parts with weak adhesive strength may be peeled off at the bonding interface with the adhesive. When peeling occurs at the adhesive interface, there is a possibility that the member will fall off. For this reason, in a structure in which dissimilar materials are bonded together using an adhesive, there is room for improvement in the structure of the above example in terms of preventing members from falling off.

The present invention has been made to solve the above problems, and its purpose is to suppress the peeling of the adhesive layer and prevent the parts from peeling even when the parts are made of materials that are difficult to bond. It is an object of the present invention to provide a structure of a member joining part that can prevent falling off.

In order to achieve the above object, the structure of the member joint portion of a vehicle according to the present invention is such that an inner member attached to the vehicle body and a glass member installed on the outside of the inner member are connected to the inner member and the glass member. A resin member placed between the glass member and the glass member is bonded with an adhesive. In the structure of the member joining part of the vehicle, the member joining part includes a first adhesive part provided on the resin member and a second adhesive part provided on the inner member, and the first adhesive part is provided with a coating surface that faces the glass member and is coated with the adhesive, a through hole is provided in the coating surface, and the first bonding portion connects the coating surface and the glass member. The second adhesion part has a second space part that is communicated with the first space part through the through hole, and the second adhesion part has a second space part that is communicated with the first space part through the through hole. By filling the first space with the adhesive and filling the second space through the through hole, the first adhesive part is bonded to the second adhesive part and the second adhesive part. The second bonded portion is bonded to the glass member and has a concave portion recessed toward the inside of the vehicle, and the second space portion is provided inside the concave portion .

According to the present invention, even if the component is formed of a material that is difficult to bond, it is possible to suppress peeling of the adhesive layer and prevent the member from falling off due to peeling.

FIG. 1 is a perspective view of a back door of a vehicle having a member joint structure according to the present invention, viewed from inside the vehicle. FIG. 2 is a perspective view of the back door of FIG. 1 viewed from the outside of the vehicle. FIG. 3 is an enlarged rear view of section X in FIG. 2; FIG. 3 is an exploded perspective view of the upper part of the back door of FIG. 2; FIG. 5 is an enlarged view of the first adhesive portion, the second adhesive portion, etc. on the left side of FIG. 4; 4 is a sectional view taken along line AA in FIG. 3. FIG. FIG. 4 is a cross-sectional view showing a state in which an adhesive layer is formed on the first adhesive part and the second adhesive part in FIG. 3; FIG. 7 is a cross-sectional perspective view of the intermediate member of the second bonding section in FIG. 6;

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the structure of a vehicle member joint according to the present invention will be described below with reference to the drawings (FIGS. 1 to 8). In addition, in the figure, the arrow Fr direction indicates the front in the vehicle longitudinal direction. The "front part (front end) and rear part (rear end)" in the description of the embodiment correspond to the front part and the rear part in the longitudinal direction of the vehicle. Further, the arrow L and R directions indicate the left side and the right side in the vehicle width direction. Furthermore, "left and right" in the description of the present embodiment corresponds to the left and right when the occupant inside the vehicle looks toward the front of the vehicle.

The structure of the member joint portion of a vehicle according to the present embodiment is applied to a back door 1 of a vehicle shown in FIG. 1, as an example. The member joining portion of this embodiment is configured to join the frame member (inner member) 20 of the back door 1, the window glass (glass member) 5, and the spoiler (resin member ) 10 using an adhesive. There is. Each member constituting the member joint will be described below.

The back door 1 includes a frame member 20, a window glass 5 to which the frame member 20 is attached, and a spoiler 10 attached to the upper part of the frame member 20. Further, a panel member 2 is attached to the lower side of the window glass 5 on the outside of the vehicle of the frame member 20. As shown in FIG. 2, a license plate 3 is attached to the panel member 2. As shown in FIG.

The spoiler 10 is a member made of a resin material such as polypropylene (PP), and extends in the vehicle width direction. The spoiler 10 is a member that is attached to the rear of the vehicle, and usually captures air flowing from the front side of the vehicle and rectifies the flow towards the vehicle, reducing air resistance and reducing air resistance when driving at high speeds. This has the effect of improving fuel efficiency as well as improving the stability of the vehicle.

As shown in FIGS. 3 to 5, the spoiler 10 of this embodiment includes a vertical wall portion 10A, a top surface portion 10B, and a first adhesive portion 11. The vertical wall portion 10A is a wall portion having wall surfaces facing the front and rear of the vehicle, and extends in the vehicle width direction. In this example, the vertical wall portion 10A covers the upper portion of the rear surface of the frame member 20. The top surface portion 10B has a portion that projects toward the front of the vehicle from the top of the vertical wall portion 10A, and a portion that projects toward the rear of the vehicle from the top of the vertical wall portion 10A. It extends to The first adhesive portion 11 will be explained later.

As shown in FIG. 1, the frame member 20 has a frame shape made of a metal material and forms the outer shape of the back door 1. A window opening 21 to which the window glass 5 is attached is provided at the upper part of the frame member 20, and a lower opening 22 for reducing the weight of the back door 1 is provided at the lower part. The window opening 21 is disposed above the vehicle from approximately the center of the frame member 20 in the vehicle vertical direction, and has a substantially rectangular shape extending in the vehicle width direction.

The lower opening 22 is arranged at a distance from the window opening 21 on the vehicle lower side, and has a substantially trapezoidal shape extending in the vehicle width direction. Further, as shown in FIGS. 4 and 5, second adhesive portions 23 to which the spoiler 10 is bonded are provided on both outer sides of the upper portion of the window opening 21 in the vehicle width direction. Further, a third bonding portion 28 is provided around the window opening 21 to which the window glass 5 is directly bonded. The second adhesive part 23 and the third adhesive part 28 will be explained later.

The window glass 5 is installed so as to close the window opening 21 of the frame member 20, as shown in FIGS. 1 and 4. Further, the upper part of the window glass 5 is bonded to the third bonding portion 28 of the frame member 20 with an adhesive. Further, the outer portion of the upper portion of the window glass 5 in the vehicle width direction is joined to the second adhesive portion 23 of the frame member 20 via the first adhesive portion 11 of the spoiler 10 . The joining of the window glass 5 and the spoiler 10 will be explained later.

Below, a member joining portion for joining the frame member 20, spoiler 10, and window glass 5 of this embodiment will be explained. The member joining section is composed of a first adhesive section 11, a second adhesive section 23, and the like. The upper part of the window glass 5 is bonded to the outside of the vehicle (back side) of the first adhesive part 11 with an adhesive, and the second part of the frame member 20 is bonded to the inside of the vehicle (front side) of the first adhesive part 11. Adhesive portion 23 is joined with an adhesive. That is, the first adhesive portion 11 of the spoiler 10 is joined to the frame member 20 and the window glass 5 while being sandwiched therebetween. Hereinafter, the shape etc. of each bonding part 11, 23 will be explained.

First, the first adhesive part 11 will be explained. As shown in FIGS. 5 to 7, the first adhesive part 11 of the spoiler 10 has a front part 12, a rear part 13, an application surface 15, an inclined surface 15A, and a through hole 14. . The first adhesive portions 11 are provided on both outer sides in the vehicle width direction at the lower end of the vertical wall portion 10A of the spoiler 10, and protrude downward from the vehicle. The first adhesive portion 11 has a so-called inverted triangular shape, and the length in the vehicle width direction decreases toward the bottom of the vehicle.

As shown in FIGS. 6 and 7, the rear surface portion 13 faces the rear of the vehicle, and a lower portion of the rear surface portion 13 is provided with a portion that is recessed toward the front of the vehicle. The coating surface 15 is a flat surface provided on the bottom surface of the recessed portion of the rear surface portion 13 described above, and is coated with an adhesive. The coated surface 15 faces the front surface of the window glass 5, and is bonded to the window glass 5 via an adhesive layer 30 formed by applying the adhesive and curing the adhesive. The inclined surface 15A connects the outer peripheral edge surrounding the application surface 15 and the main surface 13A of the rear surface portion 13, and is inclined so as to protrude toward the rear of the vehicle as it moves away from the application surface 15. The through hole 14 is formed within the surface of the application surface 15 and passes through the front portion 12 .

Further, the coating surface 15 faces the front surface of the window glass 5, and a first space 16 is provided between the front surface of the window glass 5 and the coating surface 15. In this example, as shown in FIGS. 6 and 7, a gap is provided between the front surface of the window glass 5 and the main surface 13A of the rear surface portion 13 located around the coating surface 15. The space 16 is provided so as to be connected to the gap.

The front face part 12 of the first adhesive part 11 is provided on the opposite side of the rear face part 13 and has a plane facing the front of the vehicle. As described above, the through hole 14 is formed in the plane.

Next, the second adhesive portion 23 will be explained. The second adhesive portions 23 are provided on both sides of the upper portion of the frame member 20 in the vehicle width direction so as to correspond to the first adhesive portions 11 . In this example, the second adhesive portion 23 is disposed on the outer side of the upper corner of the window opening 21 in the vehicle width direction. The front face portion 12 of the first adhesive portion 11 is bonded to the second adhesive portion 23 with an adhesive.

The second adhesive section 23 has a second space section 26 . The second space portion 26 is a space provided on the vehicle front side of the first adhesive portion 11 and communicates with the first space portion 16 through the through hole 14 .

The adhesive applied to the application surface 15 fills the first space 16 . The first adhesive part 11 and the window glass 5 are bonded by the adhesive filled in the first space part 16. Furthermore, the adhesive applied to the application surface 15 passes through the through hole 14 and fills the second space 26 . Thereby, the front surface part 12 of the first adhesive part 11 and the second adhesive part 23 are joined.

The adhesive hardens while filling the first space 16, the second space 26, and the through hole 14 connecting these, forming one adhesive layer 30. As shown in FIG. 7, the adhesive layer 30 includes a rear adhesive layer 32 formed in the first space 16, a front adhesive layer 31 formed in the second space 26, and an inner side of the through hole 14. A connecting layer 33 is formed and connects the front adhesive layer 31 and the rear adhesive layer 32, and these are integrally formed.

The rear adhesive layer 32 and the front adhesive layer 31 extend to the outside of the through hole 14 in the radial direction. In this example, the rear adhesive layer 32 is formed integrally with the connection layer 33, extending from the through hole 14 to the coating surface 15 around it, and is bonded to the coating surface 15 and the window glass 5. . Further, the front adhesive layer 31 is integrally formed with the connection layer 33 in a state where it extends from the through hole 14 to the front surface part 12 around the through hole 14 , and is formed integrally with the front surface part 12 of the first adhesive part 11 and the second adhesive part 12 . It is glued to 23.

The adhesive strength between the first adhesive part 11 of the resin spoiler 10 and the adhesive layer 30 is usually the adhesive strength between the sheet metal frame member 20 and the front adhesive layer 31, and the adhesive strength between the window glass 5 and the rear adhesive layer 32. The adhesive strength is lower than that of Therefore, in the event that the adhesive layer 30 peels off, there is a higher possibility that the peeling will occur at the adhesive interface between the first adhesive part 11 and the adhesive layer 30 than at other adhesive interfaces.

On the other hand, in the present embodiment, the adhesive interface between the resin first adhesive part 11 and the adhesive layer 30 is formed not only on the coating surface 15 but also on the inner wall of the through hole 14 and the front surface part 12 of the first adhesive part 11. is also formed. Therefore, the area of the adhesive interface becomes larger than when the adhesive interface is formed only on the coating surface 15. This increases adhesive strength and suppresses peeling.

When the adhesive interface between the first adhesive part 11 and the adhesive layer 30 peels off, specifically, the peeling occurs at the adhesive interface between the coating surface 15 and the rear adhesive layer 32, and the separation between the front part 12 and the front adhesive layer 31. When peeling occurs at the adhesive interface, the rear adhesive layer 32 extends to the outside in the radial direction of the through hole 14, so that the rear adhesive layer 32 remains locked to the front part 12. Therefore, the spoiler 10 can be prevented from falling off from the frame member 20.

The second adhesive portion 23 of this embodiment is provided with a concave portion 27 that is recessed toward the front of the vehicle (vehicle inward direction), and the second space portion 26 is provided inside the concave portion 27 . Further, in the present embodiment, the second adhesive portion 23 includes a cup-shaped intermediate member 25 attached to an attachment hole 23B provided in the frame member 20. The concave portion 27 is provided in the intermediate member 25.

The attachment hole 23B is formed in the main surface 23A of the second adhesive part 23 so as to face the front surface 12 of the first adhesive part 11, and is formed in the through hole 14 of the first adhesive part 11 when viewed from the front of the vehicle. They are arranged overlapping each other. As shown in FIGS. 6 to 8, the intermediate member 25 is a cylindrical member with a bottom and has an opening at one end in the axial direction (vehicle rear side). The concave portion 27 of this embodiment is constituted by the opening of the intermediate member 25 and the inner side of the cylinder of the intermediate member 25. Further, a radially extending flange (locking portion) 25A is provided at the opening edge of the intermediate member 25. That is, the intermediate member 25 has a so-called hat shape.

In addition, a perforated disc-shaped sealing member 24 (sponge material) is bonded to the edge of the mounting hole 23B with an adhesive or the like in order to water-tight the hole edge, and the flange 25A is attached to a second adhesive. A portion of the main surface 23A of the portion 23 located at the edge of the attachment hole 23B is locked via a seal member 24. Furthermore, the flange 25A is in contact with the front surface portion 12 of the first adhesive portion 11. In this embodiment, the adhesive is filled so that the front adhesive layer 31 is formed near the opening of the intermediate member 25.

The adhesive layer 30 can function as an anchor by filling the concave portion 27 with adhesive and further hardening the adhesive adhered to the window glass 5 to form the front adhesive layer 31. Therefore, even if it is a member that is difficult to bond, such as PP resin, etc., it is possible to fix it without creating a gap due to the viscosity of the adhesive. Further, since the adhesive layer 30 can be used as an anchor, there is no need to increase the number of parts such as fastening parts, and the spoiler 10 can be easily assembled.

By making the concave portion 27 a separate member from the frame member 20, the area of the opening of the concave portion 27 can be easily changed. As a result, the volume of the second space 26 can be easily adjusted, the area of the adhesive interface with the front adhesive layer 31 can be efficiently adjusted, and the adhesive strength can be easily adjusted.

The third adhesive portion 28 provided on the frame member 20 is directly bonded to the front surface of the window glass 5 with an adhesive. The third adhesive part 28 is provided between the second adhesive parts 23 on both sides in the vehicle width direction, and extends in the vehicle width direction. Further, both sides of the third bonding portion 28 in the vehicle width direction are curved toward the lower side of the vehicle and extend toward the lower side of the vehicle.

Furthermore, the coating surface 15 is located on the inside of the vehicle rather than the resin member (principal surface 13A of the rear surface portion 13) located around the coating surface 15. By providing the recess in this manner, the thickness of the first space 16 (dimension in the longitudinal direction of the vehicle) and the area of the adhesive interface can be increased. Thereby, the adhesive strength between the first adhesive part 11 and the window glass 5 can be stably ensured.

The description of this embodiment is an example for explaining the present invention, and does not limit the invention described in the claims. Further, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope of the claims.

In this embodiment, the intermediate member 25 is used to form the second space 26, but the present invention is not limited thereto. The concave portion 27 may be provided directly on the second adhesive portion 23 of the frame member 20, particularly on the main surface 23A. Furthermore, although the flange 25A of the intermediate member 25 is in contact with the front surface of the first bonding section 11, the present invention is not limited to this, and the flange 25A may be bonded with an adhesive.

Further, in this embodiment, an example is described in which the frame member 20, the spoiler 10, and the window glass 5 that constitute the back door 1 are joined, but the present invention is not limited to this. The structure of the member joining portion of the present invention can be applied to any joining between a metal material, a resin material, and a glass member.

1 Back door 2 Panel member 3 License plate 5 Window glass (glass member)
10 Spoiler (resin member )
10A Vertical wall part 10B Top part 11 First adhesive part 12 Front part 13 Rear part 13A Main surface 14 Through hole 15 Application surface 15A Inclined surface 16 First space part 20 Frame member (inner member)
21 Window opening 22 Lower opening 23 Second adhesive part 23A Main surface 23B Mounting hole 24 Reinforcement member 25 Intermediate member 25A Flange (locking part)
26 Second space portion 27 Concave portion 28 Third adhesive portion 30 Adhesive layer 31 Front adhesive layer 32 Rear adhesive layer 33 Connection layer

Claims (3)

A vehicle in which a resin member disposed between the inner member and the glass member is bonded to an inner member attached to the vehicle body and a glass member installed outside the inner member with an adhesive. In the structure of member joints,
The member joint portion includes a first adhesive portion provided on the resin member and a second adhesive portion provided on the inner member,
The first adhesive part is provided with a coating surface that faces the glass member and is coated with the adhesive, and the coating surface is provided with a through hole,
The first adhesive part has a first space provided between the application surface and the glass member,
The second adhesive part has a second space that is communicated with the first space through the through hole,
By filling the first space with the adhesive applied to the application surface and filling the second space through the through hole, the first adhesive 2 bonded to the adhesive portion and the glass member ;
The structure of a member joining part of a vehicle, wherein the second adhesive part has a concave part recessed toward the inside of the vehicle, and the second space part is provided inside the concave part. . 2. The structure of a member joining portion of a vehicle according to claim 1 , wherein the coated surface is located further inward of the vehicle than the surface of the resin member surrounding the coated surface. The second adhesive part includes an intermediate member that is attached to a mounting hole provided in the inner member,
The concave portion is provided in the intermediate member,
2. The vehicle member joining portion according to claim 1 , wherein a locking portion that locks onto an edge of the attachment hole is provided on an opening edge of the concave portion of the intermediate member. structure.