Next, construct

Abstract

To provide a bond structure with reduced possibility of water immersion from a border of a first adhesive agent which bonds a first member and a second member and a second adhesive agent which bonds a third member over the first member and the second member.SOLUTION: A bond structure 10 includes: an inner panel 20; an outer panel 30 bonded to the inner panel 20 with a first adhesive agent 50; a rear glass 40 bonded to the inner panel 20 and the outer panel 30 on the opposite side of the outer panel 30 to the inner panel 20 with a second adhesive agent 60; one end 56 where the inner panel 20 contacts with the first adhesive agent 50 and the second adhesive agent 60; the other end 58 where a surface which the outer panel 30 faces the rear glass 40 contacts with the first adhesive agent 50 and the second adhesive agent 60; and an interface 52 where the first adhesive agent 50 and the second adhesive agent 60 contact with each other between the one end 56 and the other end 58.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an adhesive structure.

Background Art

[0002] Patent Document 1 discloses a vehicle back door in which inclined adhesive surfaces that are inclined with respect to the thickness direction of the outer panel and form an adhesive surface with the inner panel are provided at each end of the upper outer panel and the lower outer panel, and an adhesive that protrudes from between the inclined adhesive surfaces of the inner panel and the outer panel is interposed at the adhesive portion between the pillar portion and the window panel.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configuration described in Patent Document 1, since the adhesive protrudes from between the inclined adhesive surfaces of the inner panel and the outer panel, it is difficult for the adhesive to enter between the protruding portion of the adhesive and the inner panel or the outer panel. For this reason, a gap occurs at the boundary between the adhesive protruding from between the inclined adhesive surfaces of the inner panel and the outer panel and the adhesive that adheres the main body panel, the inner panel, and the outer panel, and there is a possibility that water may enter through the gap.

[0005] An object of the present invention is to provide an adhesive structure in which the possibility of water intrusion is reduced from the boundary between a first adhesive that adheres a first member and a second member and a second adhesive that adheres a third member adhered across the first member and the second member.

Means for Solving the Problems

[0006] The adhesive structure of the first embodiment comprises a first member, a second member bonded to the first member by a first adhesive, a third member bonded to the first member and the second member on the opposite side of the second member by a second adhesive, one end of the first member where the first member, the first adhesive and the second adhesive are in contact, the other end of the second member where the surface of the second member facing the third member is in contact with the first adhesive and the second adhesive, and an interface between the one end and the other end where the first adhesive and the second adhesive are in contact with each other.

[0007] This adhesive structure has one end where the first member, the first adhesive, and the second adhesive come into contact, the other end where the surface of the second member facing the third member comes into contact with the first adhesive and the second adhesive, and an interface between the one end and the other where the first adhesive and the second adhesive come into contact with each other. Therefore, no gaps are formed at the boundary between the first adhesive and the second adhesive at one end and the other end. Consequently, this adhesive structure reduces the possibility of water infiltration from the boundary between the first adhesive bonding the first member and the second member and the second adhesive bonding the third member which is bonded across the first and second members.

[0008] The adhesive structure of the second embodiment is the adhesive structure of the first embodiment, wherein the interface is formed between the end of the first member and the end of the second member and in the region where the first member and the third member face each other, extending from the end to the first member.

[0009] In this adhesive structure, the interface is formed between the ends of the first and second members and in the region where the first and third members face each other, extending from the end to the first member. Therefore, the length of the interface is shorter compared to the case where the interface is formed outside the region between the ends of the first and second members and in the region where the first and third members face each other. Consequently, this adhesive structure reduces the possibility of water infiltration from the boundary between the first adhesive bonding the first and second members and the second adhesive bonding the third member, which is bonded across the first and second members.

[0010] The adhesive structure of the third embodiment is the adhesive structure described in the first or second embodiment, wherein one end is located on the first member at the furthest side of the region, and the other end is located on the second member at the furthest side of the region.

[0011] In this adhesive structure, one end is located on the first member at the furthest side of the region, and the other end is located on the second member at the furthest side of the region. Therefore, compared to cases where the interface is located further to one side than the furthest side of the region, or where the interface is formed further to the furthest side than the furthest side of the region, one end and the other end face the third member, making it easier for the second adhesive member to reach one end and the other end when bonding the third member to the second member. Consequently, this adhesive structure reduces the possibility of water infiltration from the boundary between the first adhesive bonding the first and second members and the second adhesive bonding the third member which is bonded across the first and second members.

[0012] The fourth embodiment of the adhesive structure is the adhesive structure described in any one of the first to third embodiments, wherein the portion of the second member closest to the third member is closer to the third member than the portion of the first member closest to the third member.

[0013] In this adhesive structure, the part of the second member closest to the third member has a shape closer to the third member than the part of the first member closest to the third member.

[0014] The fifth embodiment of the adhesive structure is the adhesive structure described in any one embodiment from the first to the third embodiment, wherein the distance between the portion of the first member closest to the third member and the third member is between 90% and less than 110% of the distance between the portion of the second member closest to the third member and the third member.

[0015] In this adhesive structure, the distance between the second member and the third member at the point closest to the second member is set to be between 90% and less than 110% of the distance between the second member and the third member at the point closest to the second member.

[0016] The sixth embodiment of the adhesive structure is the adhesive structure described in any one of the first to third embodiments, wherein the portion of the first member closest to the third member is closer to the third member than the portion of the second member closest to the third member.

[0017] In this adhesive structure, the part of the first member closest to the third member has a shape closer to the third member than the part of the second member closest to the third member.

[0018] The seventh embodiment of the adhesive structure is the adhesive structure described in any one embodiment of the first to sixth embodiments, wherein the first member is the inner panel of the vehicle's back door, the second member is the outer panel of the back door, and the third member is the rear glass of the back door.

[0019] In this adhesive structure, the first component is the inner panel of the back door, the second component is the outer panel of the back door, and the third component is the rear glass of the back door. Therefore, this adhesive structure reduces the possibility of gaps forming at the boundary between the first adhesive that bonds the inner and outer panels of the back door and the second adhesive that bonds the rear glass, which is bonded across the inner and outer panels. [Effects of the Invention]

[0020] According to the present invention, it is possible to provide an adhesive structure in which the possibility of a gap occurring at the boundary between the first adhesive that bonds the first member and the second member and the second adhesive that bonds the third member which is bonded across the first member and the second member is reduced. [Brief explanation of the drawing]

[0021] [Figure 1]It is a diagram of a back door of an automobile in which the adhesive structure according to the embodiment is used. [Figure 2] It is a cross-sectional view seen from the 1A - 1A direction of FIG. 1 explaining the adhesive structure according to the embodiment, and shows a state where the outer panel is adhered to the inner panel by the first adhesive and the glass is adhered to the outer panel and the inner panel. [Figure 3] It is a diagram explaining the manufacturing process of the adhesive structure according to the embodiment. (A) is a diagram of the inner panel, (B) is a diagram showing a state of applying the first adhesive to the inner panel, and (C) is a diagram showing a state where the outer panel is adhered to the inner panel via the first adhesive. [Figure 4] It is a diagram explaining the manufacturing process of the adhesive structure according to the embodiment following FIG. 3. (A) is a diagram showing a state of leveling the first adhesive protruding from the outer panel, (B) is a diagram showing a state where the first adhesive is leveled between the outer panel and the inner panel, and (C) is a diagram showing a state of adhering the glass coated with the second adhesive across the outer panel and the inner panel. [Figure 5] It is a diagram explaining a state of removing the first adhesive adhering to the leveling spatula in the manufacturing process of the adhesive structure according to the embodiment. (A) is a diagram in which the leveling spatula is arranged on the back plate, (B) is a diagram showing a state of scraping off the first adhesive adhering to the leveling spatula by the wiper, and (C) is a diagram showing a state where the first adhesive adhering to the leveling spatula has been scraped off by the wiper. [Figure 6] It is a diagram explaining the manufacturing process of the adhesive structure according to the first modification example of the embodiment. (A) is a diagram showing a state where the outer panel is adhered to the inner panel via the first adhesive, (B) is a diagram showing a state of leveling the first adhesive protruding from the outer panel, and (C) is a diagram showing the adhesive structure according to the first modification example with the glass attached. [Figure 7] It is a diagram explaining the manufacturing process of the adhesive structure according to the second modification example of the embodiment. (A) is a diagram showing a state where the outer panel is adhered to the inner panel via the second adhesive, (B) is a diagram showing a state of leveling the second adhesive protruding from the outer panel, and (C) is a diagram showing the adhesive structure according to the second modification example with the glass attached. [Figure 8] It is a diagram for explaining the manufacturing process of the bonding structure according to the third modification of the embodiment. (A) is a diagram showing a state where the outer panel is bonded to the inner panel via the third adhesive. (B) is a diagram showing a state where the third adhesive protruding from the outer panel is leveled. (C) is a diagram showing the glass attached and the bonding structure according to the third modification.

Mode for Carrying Out the Invention

[0022] Hereinafter, an example of an embodiment of the present disclosure will be described while referring to the drawings. In each drawing, the same or equivalent components and parts are given the same reference numerals. Also, the dimensional ratios in the drawings are exaggerated for convenience of explanation and may be different from the actual ratios.

[0023] In FIGS. 1 and 2, a bonding structure 10 according to the present disclosure is shown. The bonding structure 10 according to the present disclosure is used for the back door of an automobile, which is an example of a vehicle. The bonding structure 10 shown in FIG. 1 is a part of the back door having an upper outer panel 30 and a lower outer panel 31 divided in the height direction. Also, as shown in FIG. 2, when viewed from the direction of line 1A-1A in FIG. 1, the inner panel 20, the upper outer panel 30 of the back door, and the rear glass 40 are bonded.

[0024] In the description of the bonding structure 10 according to the present disclosure, the direction along the surface of the rear glass 40 shown in FIG. 1 is referred to as the "height direction". That is, the right side of the drawing in FIG. 2 is the lower side in the height direction of the back door in the vehicle, and the left side of the drawing is the upper side in the height direction of the back door.

[0025] (Configuration) As shown in Figure 2, the adhesive structure 10 according to this disclosure comprises an inner panel 20, an outer panel 30 bonded to the inner panel 20 by a first adhesive 50, a rear glass 40 bonded to the inner panel 20 and the outer panel 30 on the opposite side of the outer panel 30 by a second adhesive 60, one end 56 in contact with the inner panel 20, the first adhesive 50 and the second adhesive 60, the other end 58 in contact with the surface of the outer panel 30 facing the rear glass 40, and an interface 52 between the one end 56 and the other end 58 where the first adhesive 50 and the second adhesive 60 are in contact with each other.

[0026] The inner panel 20 is an example of the first member according to the present disclosure, and in this embodiment, as shown in Figure 2, it is a plate-shaped member that extends in the height direction (left-right direction in the drawing) and has a bulging portion 28 and a mounting portion 22. Also, as described above, in this embodiment, in Figure 2, the right side of the drawing is the lower side in the height direction of the back door, and the opposite side is the upper side in the height direction of the back door. That is, the bulging portion 28 is the lower part in the height direction of the inner panel 20.

[0027] The mounting portion 22 is recessed in the thickness direction (height direction in the drawing) relative to the bulging portion 28 of the inner panel 20, and is the portion to which the outer panel 30, described later, is attached. Furthermore, an inclined surface 24 connected to the bulging portion 28 is formed on the lower side of the mounting portion 22 in the height direction. In this embodiment, the bulging portion 28 is plate-shaped as shown in Figure 2. In other words, the position of the bulging portion 28 in the thickness direction is aligned with the top portion 26, which is the boundary between the inclined surface 24 and the bulging portion 28.

[0028] The outer panel 30 is an example of a second member according to the present disclosure, and in this embodiment, as shown in Figure 2, it is a plate-shaped member that extends in the height direction. In this embodiment, the lower end 32 of the outer panel 30 in the height direction is positioned so as not to overlap with the inclined surface 24 of the inner panel 20.

[0029] The inner panel 20 and the outer panel 30 are bonded to each other with a first adhesive 50. Any type of adhesive can be used as the first adhesive 50, as long as it can bond the inner panel 20 and the outer panel 30 to each other without allowing water to penetrate. Examples include urethane adhesives and epoxy adhesives, and among these, urethane adhesives with rubber elasticity are preferred.

[0030] The rear glass 40 is an example of a third member according to the present disclosure, and in this embodiment, as shown in Figure 2, is a plate-shaped member that extends in the height direction and is bonded to the inner panel 20 and the outer panel 30 via a second adhesive 60. In other words, the rear glass 40 is a member that spans the inner panel 20 and the outer panel 30 by the second adhesive 60. In other words, the slope of the inner panel 20 is the region where the inner panel 20 and the rear glass 40 face each other. In other words, the rear glass 40 is bonded to the interface 52 of the inner panel 20 via a first adhesive 50 and a second adhesive 60.

[0031] Furthermore, the second adhesive 60 can be any type of adhesive as long as it can bond the rear glass 40, the first adhesive 50, the inner panel 20, and the outer panel 30 to each other without allowing water to penetrate. Also, the second adhesive 60 may be the same type as the first adhesive 50, or it may be different.

[0032] As shown in Figure 2, in this embodiment, the position of the rear glass 40 in the thickness direction is closer to the outer panel 30 than to the bulging portion 28 of the inner panel 20. In other words, the part of the outer panel 30 closest to the rear glass 40 is closer to the rear glass 40 than the part of the inner panel 20 closest to the rear glass 40.

[0033] The inner panel 20 and outer panel 30 may be made of any material as long as they do not deform easily and have rigidity. Examples include polypropylene with fillers such as talc or rubber, ABS (Acrylonitrile Butadiene Styrene), and synthetic resins.

[0034] In this disclosure, the interface 52 is the portion where the first adhesive 50, which bonds the inner panel 20 and the outer panel 30, does not overlap with the outer panel 30 when viewed from the thickness direction, as shown in Figure 2, and where the first adhesive 50 and the second adhesive 60 are in contact with each other. In other words, the interface 52 is the portion formed between the inner panel 20 and the outer panel 30, below the edge 32 of the outer panel 30 in the height direction.

[0035] In this embodiment, as shown in Figure 2, the interface 52 is formed to connect the top 26 of the inner panel 20 and the corner 34 on one side (upper side in the drawing) in the thickness direction of the end 32 of the outer panel 30. In other words, in this embodiment, the interface 52 is formed between the inner panel 20 and the end 32 of the outer panel 30, and extends from the end 32 to the inner panel 20 in the region where the inner panel 20 and the rear glass 40 face each other. In other words, one end 56 of the interface 52 in this embodiment is located at the outermost edge (right side in the drawing) in the height direction of the region where the inner panel 20 and the rear glass 40 face each other, and the other end 58 of the interface 52 is located at the outermost edge (left side in the drawing) in the height direction of the opposing region.

[0036] Furthermore, as shown in Figure 2, at one end 56 of the interface 52, the first adhesive 50, the second adhesive 60, and the first member are in contact, and at the other end 58 of the interface 52, the first adhesive 50, the second adhesive 60, and the second member are in contact. Also, there are no gaps between the one end 56 and the other end 58 of the interface 52.

[0037] In other words, the interface 52 is formed from the part of the outer panel 30 closest to the rear glass 40 toward the part of the inner panel 20 closest to the rear glass 40.

[0038] Next, the manufacturing procedure for the adhesive structure 10 according to this disclosure will be described with appropriate reference to Figures 3 to 5. The manufacturing procedure according to this disclosure may be controlled by automatically operating equipment or by a worker.

[0039] (Manufacturing procedure for adhesive structure 10) In the manufacturing procedure for the adhesive structure 10 according to this disclosure, first, as shown in Figure 3(A), the first adhesive 50 is applied to the mounting portion 22 of the prepared inner panel 20 from one side in the thickness direction, as shown in Figure 3(B). The amount of the first adhesive 50 applied to the mounting portion 22 will be described later.

[0040] Next, from the state shown in Figure 3(B), the outer panel 30 is bonded to one side in the thickness direction of the mounting portion 22, such that the end portion 32 does not overlap with the inclined surface 24 when viewed from that side in the thickness direction, resulting in the state shown in Figure 3(C). In this state, as shown in Figure 3(C), when the outer panel 30 is bonded to the mounting portion 22, an overflow portion 54 of the first adhesive 50 is created on one side in the thickness direction beyond the end portion 32 of the outer panel 30.

[0041] The protruding portion 54, as shown in Figure 3(C), is an irregularly shaped portion that protrudes from between the outer panel 30 and the mounting portion 22 in one direction in the thickness direction due to the pressure applied when bonding the outer panel 30 to the mounting portion 22 of the inner panel 20. In other words, the protruding portion 54 is the portion on one side in the thickness direction relative to the first adhesive 50, which is a straight line connecting the top 26 of the mounting portion 22 and the corner 34 of the end portion 32 of the outer panel 30.

[0042] Furthermore, in this embodiment, the amount of the first adhesive 50 applied to the mounting portion 22 is set such that, as shown in Figure 3(C), when the outer panel 30 is bonded to the mounting portion 22, the first adhesive 50 touches the top portion 36 and the corner 34 of the end portion 32 of the mounting portion 22, resulting in an excess portion 54.

[0043] Next, the excess portion 54 of the first adhesive 50 that protrudes from between the inner panel 20 and the outer panel 30 is smoothed using a smoothing spatula 70, as shown in Figure 4(A). The smoothing spatula 70 may be moved in any way as long as it is possible to smooth the excess portion 54 of the first adhesive 50, but in this embodiment, as an example, it is moved from the front of the drawing towards the back of the drawing. As a result, the excess portion 54 of the first adhesive 50 is smoothed, and as shown in Figure 4(B), an interface 52 is formed on the line connecting the top 26 of the mounting portion 22 and the corner 34 of the end portion 32 of the outer panel 30. The material of the smoothing spatula 70 may be set as appropriate, but as an example, it is made of an elastic material such as polytetrafluoroethylene.

[0044] Then, from the state shown in Figure 4(B), the rear glass 40, on which the second adhesive 60 has been applied to the other side in the thickness direction (downward in the drawing) as shown in Figure 4(C), is bonded to the inner panel 20 and the outer panel 30 so as to form the bonded structure 10 shown in Figure 2.

[0045] Furthermore, the first adhesive 50 adhering to the leveling spatula 70 that smoothed out the excess portion 54 is removed as follows, for example. First, as shown in Figure 5(A), the leveling spatula 70 is brought into contact with the rigid back plate 72 with the side that does not have the first adhesive 50 adhering to it, and then the wiper 74 is brought close to the side to which the first adhesive 50 is adhering.

[0046] Next, as shown in Figure 5(B), the wiper 74 is placed against the surface of the leveling spatula 70 to which the first adhesive 50 is attached, and moved toward the tip side of the leveling spatula 70 (the side to which the first adhesive 50 is attached), scraping off the first adhesive 50 attached to the leveling spatula 70.

[0047] Then, as shown in Figure 5(C), the first adhesive 50 is removed from the leveling spatula 70, and the leveling spatula 70 is used again to level the first adhesive 50 to form the adhesive structure 10, as shown in Figure 4(A).

[0048] The adhesive structure 10 obtained by the manufacturing procedure described above can provide the following actions and effects.

[0049] (Mechanism of Action and Effects) The adhesive structure 10 of this embodiment comprises an inner panel 20, an outer panel 30 bonded to the inner panel 20 by a first adhesive 50, a rear glass 40 bonded to the inner panel 20 and the outer panel 30 on the opposite side of the outer panel 30 by a second adhesive 60, one end 56 in which the inner panel 20, the first adhesive 50 and the second adhesive 60 are in contact, the other end 58 in which the surface of the outer panel 30 facing the rear glass 40 is in contact with the first adhesive 50 and the second adhesive 60, and an interface 52 between the one end 56 and the other end 58 in which the first adhesive 50 and the second adhesive 60 are in contact with each other.

[0050] The adhesive structure 10 of this embodiment has one end 56 where the inner panel 20, the first adhesive 50, and the second adhesive 60 are in contact, the other end 58 where the surface of the outer panel 30 facing the rear glass 40 is in contact with the first adhesive 50 and the second adhesive 60, and an interface 52 between the one end 56 and the other end 58 where the first adhesive 50 and the second adhesive 60 are in contact with each other. Furthermore, when bonding the rear glass 40, the second adhesive 60 is in contact with the first adhesive 50 and the top portion 26 of the inner panel 20 at one end 56 of the interface 52 so as to cover them, thus making it difficult for voids, i.e., air gaps, to occur at one end 56 of the interface 52. Similarly, the second adhesive 60 is in contact with the first adhesive 50 and the corner of the outer panel 30 at the other end 58 of the interface 52 so as to make it difficult for voids to occur at the other end 58 of the interface 52 as well.

[0051] Therefore, according to the adhesive structure 10 of this embodiment, the possibility of water seeping in from the boundary between the first adhesive 50 that adheres the inner panel 20 and the outer panel 30 and the second adhesive 60 that adheres the rear glass 40 which is adhered across the inner panel 20 and the outer panel 30 is reduced.

[0052] Furthermore, in the adhesive structure 10 of this embodiment, the interface 52 is formed between the inner panel 20 and the end portion 32 of the outer panel 30, and in the region where the inner panel 20 and the rear glass 40 face each other, extending from the end portion 32 to the inner panel 20.

[0053] In the adhesive structure 10 of this embodiment, the interface 52 is formed between the inner panel 20 and the end 32 of the outer panel 30, and in the region where the inner panel 20 and the rear glass 40 face each other, extending from the end 32 to the inner panel 20. Therefore, the length of the interface 52 is shorter compared to the case where the interface 52 is formed outside the region between the inner panel 20 and the end 32 of the outer panel 30, and where the inner panel 20 and the rear glass 40 face each other.

[0054] Therefore, according to the adhesive structure 10 of this embodiment, compared to the case where the interface 52 is formed between the inner panel 20 and the end 32 of the outer panel 30 and outside the area where the inner panel 20 and the rear glass 40 face each other, the possibility of water seeping in from the boundary between the first adhesive 50 that adheres the inner panel 20 and the outer panel 30 and the second adhesive 60 that adheres the rear glass 40 which is adhered across the inner panel 20 and the outer panel 30 is reduced.

[0055] Furthermore, in this embodiment, one end 56 of the adhesive structure 10 is located on the inner panel 20 at the furthest side of the region, and the other end 58 is located on the outer panel 30 at the furthest side of the region.

[0056] In the adhesive structure 10 of this embodiment, one end 56 is located on the inner panel 20 at the furthest side of the region, and the other end 58 is located on the outer panel 30 at the furthest side of the region. Therefore, compared to the case where the interface 52 is located further to one side than the furthest side of the region, or where the interface 52 is formed further to the furthest side than the furthest side of the region, one end 56 and the other end 58 face the rear glass 40 side, making it easier for the second adhesive member to reach one end 56 and the other end 58 when bonding the rear glass 40 to the outer panel 30.

[0057] Therefore, according to the adhesive structure 10 of this embodiment, compared to the case where the interface 52 is located further to one side than the furthest side of the region, or where the interface 52 is formed further to the other side than the furthest side of the region, the possibility of water seeping in from the boundary between the first adhesive 50 that bonds the inner panel 20 and the outer panel 30 and the second adhesive 60 that bonds the rear glass 40 which is bonded across the inner panel 20 and the outer panel 30 is reduced.

[0058] Furthermore, in this embodiment, the adhesive structure 10 is such that the portion of the outer panel 30 closest to the rear glass 40 is closer to the rear glass 40 than the portion of the inner panel 20 closest to the rear glass 40.

[0059] In the adhesive structure 10 of this embodiment, the part of the outer panel 30 closest to the rear glass 40 has a shape that is closer to the rear glass 40 than the part of the inner panel 20 closest to the rear glass 40.

[0060] Furthermore, in this embodiment, the adhesive structure 10 has as follows: the first member is the inner panel 20 of the vehicle's back door; the second member is the outer panel 30 of the back door; and the third member is the rear glass 40 of the back door.

[0061] In the adhesive structure 10 of this embodiment, the first member is the inner panel 20 of the back door, the second member is the outer panel 30 of the back door, and the third member is the rear glass 40 of the back door. Therefore, according to the adhesive structure 10 of this embodiment, the possibility of gaps occurring at the boundary between the first adhesive 50 that bonds the inner panel 20 and the outer panel 30 in the back door and the second adhesive 60 that bonds the rear glass 40 which is bonded across the inner panel 20 and the outer panel 30 is reduced.

[0062] Next, a modified example of the adhesive structure 10 according to this disclosure will be described with reference to Figures 6 to 8 as appropriate. Note that, among the modified examples of the adhesive structure 10 in this disclosure, components and parts equivalent to those of the adhesive structure 10 according to the above-described embodiment will be denoted by the same reference numerals, and detailed descriptions will be omitted.

[0063] (First torture) Figure 6 illustrates a first modified example of the adhesive structure 10 according to the present disclosure. As shown in Figure 6(A), in this modified example, the end portion 32 of the outer panel 30 is positioned to overlap with the inclined surface 24 when viewed from the thickness direction and is bonded to the inner panel 20 by the first adhesive 50.

[0064] In this modified example, as shown in Figure 6(B), the excess portion 54 of the first adhesive 50 can be smoothed out with a smoothing spatula 70. Also, as shown in Figure 6(C), in the adhesive structure 10, the interface 52 is formed to connect the top portion 26 of the inner panel 20 and the corner 34 on one side (upper side in the drawing) in the thickness direction of the end portion 32 of the outer panel 30.

[0065] Other structures and manufacturing procedures in this modified example are the same as those in the embodiments described above. Furthermore, the adhesive structure 10 in this modified example can also be made to have the same functions and effects as those in the embodiments described above.

[0066] (Second variation) Figure 7 illustrates a second modified example of the adhesive structure 10 according to the present disclosure. As shown in Figure 7(A), in this modified example, with the outer panel 30 bonded to the mounting portion 22 of the inner panel 20 by the first adhesive 50, the distance between the corner 34 of the end portion 32 of the outer panel 30 and the rear glass 40 is between 90% and 110% of the distance between the bulging portion 28 of the inner panel 20 and the rear glass 40.

[0067] In this modified example, as shown in Figure 7(B), the excess portion 54 of the first adhesive 50 can be smoothed out with the smoothing spatula 70. Also, as shown in Figure 7(C), in the adhesive structure 10, the interface 52 is formed to connect the top portion 26 of the inner panel 20 and the corner 34 on one side (upper side in the drawing) in the thickness direction of the end portion 32 of the outer panel 30.

[0068] Other structures and manufacturing procedures in this modified example are the same as those in the embodiments described above. Furthermore, the adhesive structure 10 in this modified example can also be made to have the same functions and effects as those in the embodiments described above.

[0069] (Third variation) Figure 8 illustrates a third modified example of the adhesive structure 10 according to the present disclosure. As shown in Figure 8(A), in this modified example, with the outer panel 30 bonded to the mounting portion 22 of the inner panel 20 by the first adhesive 50, the position in the thickness direction of the corner 34 of the end portion 32 of the outer panel 30 is on the other side (downward in the drawing) than the position in the thickness direction of the bulging portion 28 of the inner panel 20. In other words, the part of the inner panel 20 closest to the rear glass 40 is closer to the rear glass 40 than the part of the outer panel 30 closest to the rear glass 40.

[0070] In this modified example, as shown in Figure 8(B), the excess portion 54 of the first adhesive 50 can be smoothed out with the smoothing spatula 70. Also, as shown in Figure 8(C), in the adhesive structure 10, the interface 52 is formed to connect the top portion 26 of the inner panel 20 and the corner 34 on one side (upper side in the drawing) in the thickness direction of the end portion 32 of the outer panel 30.

[0071] Other structures and manufacturing procedures in this modified example are the same as those in the embodiments described above. Furthermore, the adhesive structure 10 in this modified example can also be made to have the same functions and effects as those in the embodiments described above.

[0072] (Other variations) As described above, the adhesive structure 10 according to this disclosure has been explained with reference to the figures as appropriate, but the application of the adhesive structure 10 according to this disclosure is not limited thereto.

[0073] For example, in the above description, one end 56 of the interface 52 was in contact with the top 26 of the inclined surface 24 of the inner panel 20, but this is not limited to this, as long as no gap is formed at one end 56 of the interface 52. For example, one end 56 of the interface 52 may be formed at any location such as the inclined surface 24 or the bulge 28 of the inner panel 20.

[0074] Furthermore, in the above description, for example, the other end 58 of the interface 52 was in contact with the corner 34 of the end 32 of the outer panel 30, but this is not limited to this, as long as no gap is formed at the other end 58 of the interface 52. For example, the other end 58 of the interface 52 may be formed on any part of one side surface of the outer panel 30 in the thickness direction, or on one side surface of the end 32 of the outer panel 30 in the height direction, etc.

[0075] Furthermore, although the inner panel 20 and rear glass 40 are described as plate materials extending in the height direction in the above description, they are not limited to this and may be members that extend further in the thickness direction, such as blocks or slabs. Also, the inner panel 20 and rear glass 40 may be rod materials that do not extend in the width direction. Also, the inner panel 20 and rear glass 40 may be curved in the thickness direction. In addition, the inner panel 20 may have protrusions and recesses on the inclined surface 24 and the top portion 26, or the bulging portion 28, provided that no gap is formed at one end 56 when the inner panel 20 is in contact with the first adhesive 50 and the second adhesive 60 at one end 56.

[0076] Furthermore, although the outer panel 30 is described as a plate extending in the height direction, it is not limited to this and may be a rod that does not extend in the width direction. Also, the outer panel 30 may be curved in the thickness direction. In addition, the outer panel 30 may have protrusions and recesses at the end 32 or corner 34, provided that no gap is formed at the other end 58 when it is in contact with the first adhesive 50 and the second adhesive 60 at the other end 58.

[0077] Furthermore, in the above description, the bulging portion 28 of the inner panel 20 was assumed to be the lower part in the height direction of the inner panel 20 compared to the mounting portion 22, but this is not limited to this, and the mounting portion 22 may be the upper part in the height direction. In other words, the bulging portion 28 may be the upper part of the inner panel 20.

[0078] Furthermore, although the interface 52 was formed to connect the top 26 of the inner panel 20 and the corner 34 of the outer panel 30 in the above description, it is not limited to this as long as there is no gap between one end 56 and the other end 58 of the interface 52. For example, the interface 52 may have multiple curved portions between one end 56 and the other end 58, rather than being a straight line as shown in Figure 2. In this case as well, since no gap is formed between one end 56 and the other end 58 of the interface 52, the possibility of water seeping in from the boundary between the first adhesive 50 and the second adhesive 60 is reduced.

[0079] Furthermore, in the above description, the adhesive structure 10 was formed in the portion of the inner panel 20, outer panel 30, and rear glass 40 that extends in the height direction as shown in Figure 2, but the portion to which the adhesive structure 10 according to this disclosure is applied is not limited to this. The adhesive structure 10 according to this disclosure may also be applied to a portion that extends in the width direction, or it may be applied to the portion to which the lower outer panel 31, inner panel 20, and rear glass 40 are bonded together in Figure 1.

[0080] Furthermore, in the above description, the first component was stated to be the inner panel 20 of the vehicle's back door, the second component to be the outer panel 30 of the back door, and the third component to be the rear glass 40 of the back door. However, the components are not limited to these, as long as the product has an adhesive structure 10.

[0081] While embodiments of this disclosure have been described above with reference to the attached drawings, it is clear that any person with ordinary skill in the art to which this disclosure belongs could conceive of various modifications or applications within the scope of the technical idea described in the claims, and these too are naturally understood to fall within the technical scope of this disclosure. [Explanation of Symbols]

[0082] 10 Adhesive structure 20 Outer Panels 22 Mounting part 24 Slope 26 Top 28 Bulge 30 Inner Panel 32 End 34 corners 40 Rear window 50 First Adhesive 52 Interface 54. Protruding part 56 one end 58 Other end 60 Second adhesive 70 leveling spatula 72 Backplate 74 wipers

Claims

1. First component and A second member is bonded to the first member by a first adhesive, A third member is bonded to the first member and the second member on the opposite side of the second member by a second adhesive, Between the first member and the end of the second member and in the region where the first member and the third member face each other, a structure is formed extending from the end to the first member, with one end where the first member, the first adhesive, and the second adhesive come into contact, the other end where the surface of the second member facing the third member comes into contact with the first adhesive and the second adhesive, and an interface between the one end and the other end where the first adhesive and the second adhesive come into contact with each other, An adhesive structure equipped with

2. The aforementioned end is located on the first member at the furthest side of the region, The other end is located at the farthest side of the region, where it is positioned in the second member. The adhesive structure according to claim 1.

3. The portion of the second member closest to the third member is closer to the third member than the portion of the first member closest to the third member. The adhesive structure according to claim 1.

4. The distance between the portion of the first member closest to the third member and the third member is set to be between 90% and 110% of the distance between the portion of the second member closest to the third member and the third member. The adhesive structure according to claim 1.

5. The portion of the first member closest to the third member is closer to the third member than the portion of the second member closest to the third member. The adhesive structure according to claim 1.

6. The first member is the inner panel of the vehicle's back door. The second member is the outer panel of the back door, The third member is the rear glass of the back door. An adhesive structure according to any one of claims 1 to 5.

Images