JPH10168396A - Bonding between external plate of car body and reinforcing material and adhesive container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for bonding a reinforcing material to an external plate of a car body at a low cost in excellent workability without causing sink mark, strain, etc., and to obtain an adhesive container. SOLUTION: First, pressure is applied to a main body tube 4 of an adhesive container to squeeze out an adhesive 10A having hardness soft in curing from the upper side of a nozzle part 4a and to press out an adhesive 12A having hardness hard in curing from the lower side of the nozzle part 4a. Consequently, the top of a reinforcing material 20 is coated with the adhesive 12A, which is coated with the adhesive 10A. Then the reinforcing material 20 is spot welded to a pillar 24 and covered with a side panel (external plate) 22. Consequently, the adhesive 10A having hardness soft when cured is stuck fast to the side panel 22. Afterward, the body is coated by electrodeposition, heated and dried. The adhesives 10A and 12A are cured by the operation to form cured adhesive layers 10B and 12B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for bonding an outer plate of a vehicle body to a reinforcing member and an adhesive container for performing the bonding method.

[0002]

2. Description of the Related Art A bus with a large outer plate area, such as a vehicle body, having a shape similar to a flat plate has a poor appearance because the outer plate is distorted and bumped as it is. In order to solve this problem and to make the outer panel have tension, long reinforcements (reinforcements) are arranged between the pillars of the vehicle body and the outer panel in front and rear of the vehicle body. This structure will be described with reference to FIG.
FIG. 5A is a front view showing the outline of the body of the bus, and FIG. 5B is a partial cross-sectional view of the body, and FIG.
It shows a cross section of the I-III portion. As shown in FIG. 5A, two reinforcing members 20 are arranged between an outer plate (side panel) 22 and a pillar 24 in a vehicle body 40 of a bus. As shown in FIG. 5B, an inside board 26 is provided inside the pillar 24, and an upper end of the side panel 22 is fixed to an upper end of the inside board 26 by a fastener 28. And the pillar 24
The two reinforcing members 20 are fixed by spot welding, and the side panel 22 is formed on the reinforcing member 20 by a molding type adhesive which becomes elastic by drying (170 degrees × 30 minutes) after the electrodeposition coating of the vehicle body. It is fixed by the agent 42.

[0003]

However, since the molding type adhesive 42 is manufactured by extruding a rectangular cross-sectional shape using an extrusion die, the cost is extremely high. In addition, the worker can use the molding-type adhesive 4
The work is very difficult because the adhesive 42 sticks to the gloves when attaching 2. On the other hand, when a liquid heat-curable adhesive is used, the adhesive becomes too hard when the adhesive is cured by heating and drying after the electrodeposition coating of the vehicle body. There was a problem that it would. Therefore, in the present invention, a method of bonding a reinforcing member with an outer plate of a vehicle body that does not cause sink marks, distortions, and the like at low cost and has good workability, and an adhesive for implementing the bonding method It is intended to provide a container.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 is a method of bonding an outer plate of a vehicle body to a reinforcing member, wherein the method comprises the steps of: Bonding the outer plate and the reinforcing material by applying a soft adhesive having a hardened hardness and applying a hard adhesive having a hardened hardness to the side of the reinforcing material. Was created. According to such a bonding method, the tension of the outer plate is maintained by the adhesive having a hardened hardness when applied to the reinforcing material side. Further, since the adhesive having a soft hardness when hardened is applied to the side of the outer plate, the adhesive does not become too hard when hardened. In this manner, the bonding method of the present invention solves the problems of the prior art by bonding the outer plate and the reinforcing material in a two-layer structure of a soft adhesive and a hard adhesive when hardened. Thus, the method of bonding the outer plate of the vehicle body to the reinforcing member can be performed at low cost and with good workability without causing sink marks, distortions, and the like on the outer plate.

According to a second aspect of the present invention, there is provided an adhesive container for performing the bonding method according to the first aspect, wherein the inside of the adhesive container is divided into two storage chambers by a partition wall. An adhesive container, wherein the first accommodating chamber accommodates an adhesive having a soft hardness when hardened, and the second accommodating chamber accommodates an adhesive having a hard hardness when hardened. Was created. According to such an adhesive container, by applying pressure to the adhesive container manually or by using an automatic squeezing device, an adhesive having a soft hardness when hardened from the first storage chamber, The adhesive having a hard hardness when hardened is simultaneously squeezed out of the second storage chamber. Therefore, by squeezing out the reinforcing member with the second storage chamber facing down, a layer of a hard adhesive having a hardness when hardened is formed on the reinforcing material, and further a layer of the adhesive when hardened is formed thereon. An adhesive layer having a low hardness is formed. Therefore, the bonding method according to claim 1 can be performed by placing the outer plate of the vehicle body thereon and heating and curing the outer plate. Thus, according to the adhesive container of the present invention, the bonding method described in claim 1 can be performed very easily and reliably.

Further, in the invention according to claim 3,
A method of bonding an outer plate of a vehicle body and a reinforcing material, wherein an adhesive having a hardened hardness is applied to the side of the outer plate and the reinforcing material, and the softened adhesive having a hardened hardness is applied. A bonding method characterized by bonding the outer plate and the reinforcing material by arranging a hard adhesive having a hardness when hardened inside the agent is created. According to such a bonding method, the tension of the outer plate is maintained by the hardened hardened adhesive disposed inside the soft adhesive. Also,
Since the adhesive having a soft hardness when hardened is applied to the side of the outer plate, the adhesive does not become too hard when hardened. Thus, the bonding method of the present invention solves the problems of the prior art by bonding the outer plate and the reinforcing material in a double structure of a soft adhesive and a hard adhesive when hardened. Low cost, good workability,
A method of bonding a reinforcing member to an outer plate of a vehicle body without sink marks, distortion, and the like occurring in the outer plate.

Further, in the invention according to claim 4,
An adhesive container for carrying out the bonding method according to claim 3, wherein the inside of the adhesive container is divided into two inner and outer storage chambers by an internal partition, and the outer storage chamber has a hardness when hardened. The adhesive container is characterized in that a soft adhesive is stored therein, and an internal storage chamber stores an adhesive having a hardened hardness. According to such an adhesive container, the worker applies pressure to the adhesive container by hand or by using an automatic squeezing device, so that the adhesive having a soft hardness when hardened from the outer storage chamber and the inner adhesive are also used. The adhesive having a high hardness when hardened is simultaneously squeezed out of the storage chamber. Therefore, by squeezing out on the reinforcing material, an adhesive layer having a soft hardness when hardened outside is formed, and an adhesive layer having a hard hardness when hardened is formed therein. Therefore, the bonding method according to claim 3 can be performed by placing the outer plate of the vehicle body thereon and heating and curing the outer plate. Thus, according to the adhesive container of the present invention, the bonding method described in claim 3 can be performed very easily and reliably.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment Next, a first embodiment of the present invention will be described with reference to FIGS. First, the structure of the adhesive container used in the present embodiment will be described with reference to FIG. FIG. 1A is a longitudinal sectional view showing the structure of the adhesive container of the present embodiment, and FIG. 1B is a transverse sectional view of the adhesive container, taken along the line II of FIG. 1A. 1 shows a cross section of FIG. As shown in FIG. 1, the adhesive container 2 of the present embodiment includes a main body tube 4 having a cylindrical cross-sectional shape, and a first housing chamber 6 and a second housing chamber 8 inserted therein.
It is constituted by. The distal end of the main body tube 4 is a nozzle portion 4a whose outer diameter is narrowed and opened to the outside.

The first storage chamber 6 and the second storage chamber 8 are in close contact with each other at flat portions 6a, 8a. The interior of the adhesive container 2 is divided into two storage chambers 6, 8 by these flat portions 6a, 8a. Therefore, the plane portions 6a, 8
“a” corresponds to a partition that divides the inside of the adhesive container in the invention according to claim 2 into two storage chambers. And the first
The storage chamber 6 has an adhesive 10A having a soft hardness when hardened.
The second storage chamber 8 stores a hard adhesive 12A having a hardened hardness. Therefore, by applying pressure to the main body tube 4, the adhesive 10A having a hardness when hardened from the upper side in the drawing of the nozzle portion 4a is squeezed out, and the hardness when hardened from the lower side in the drawing of the nozzle portion 4a is squeezed. The hard adhesive 12A is squeezed out. Here, a specific example of the adhesive 10A having a soft hardness when cured is a rubber-based adhesive containing a foaming agent. Specific examples of the adhesive 12A having a high hardness when cured include a non-foamed rubber-based adhesive and an epoxy-based adhesive.

Next, a specific example of the bonding between the outer plate of the vehicle body and the reinforcing member using the adhesive container 2 having such a structure will be described.
This will be described with reference to FIG. First, as shown in FIGS. 2A and 2B, an adhesive is applied on the reinforcing member 20. Here, as shown in FIG. 1, the adhesive container 2 is held with the first storage chamber 6 on the upper side and the second storage chamber 8 on the lower side, and the worker manually or automatically operates the automatic squeezing device. To apply pressure to the body tube 4. by this,
As shown in FIGS. 2 (A) and 2 (B), an adhesive 10A having a soft hardness when hardened from above the nozzle portion 4a is squeezed out, and a hard adhesive when hardened from below the nozzle portion 4a. The adhesive 12A is squeezed out. Therefore, the reinforcement 20
An adhesive 12A having a hardened hardness is applied on the top, and an adhesive 10A having a soft hardness when hardened is applied thereon. Then, the reinforcing material 20
Is spot-welded to the pillar 24 to cover the side panel (outer plate) 22. As a result, the side panel 22 is brought into close contact with the adhesive 10A having a soft hardness when hardened.

[0011] Thereafter, the vehicle body is electrodeposited and heated and dried. Thereby, as shown in FIG. 2C, the adhesives 10A and 12A are cured, and the cured adhesive layer 1 is cured.
0B and 12B are formed. At this time, the side panel 22
Since the adhesive 10A, which is soft when hardened, is in close contact with the side panel, sink marks, distortion, and the like do not occur on the side panel 22. In addition, since the hardened adhesive 12A which is hardened when hardened in close contact with the reinforcing material 20 becomes the hardened adhesive layer 12B, the tension of the side panel 22 is reliably maintained. As described above, in the present embodiment, the problem of the prior art is solved by bonding the outer plate 22 and the reinforcing material 20 with a two-layer structure of the soft adhesive 10A and the hard adhesive 12A having a hardened hardness. By solving the problem, a method of bonding the outer plate 22 of the vehicle body and the reinforcing member 20 at a low cost, with good workability, and without generating sink marks, distortion, and the like on the outer plate 22 is provided.

In this embodiment, the outer plate 22 and the reinforcing member 20 are bonded to each other with only two layers of the adhesive 10A having a hardened hardness and the hard adhesive 12A.
A layer of another type of adhesive may be interposed between the layer of the adhesive 10A having a hardness that is close to and hardened when hardened and the layer of the adhesive 12A having a hardness that is hardened when being closely adhered to the reinforcing member 20. .

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. First, the structure of the adhesive container used in the present embodiment will be described with reference to FIG. FIG. 3A is a longitudinal sectional view showing the structure of the adhesive container of the present embodiment, and FIG. 3B is a transverse sectional view of the adhesive container, taken along the line II-II of FIG. 1 shows a cross section of FIG. As shown in FIG. 3, the adhesive container 32 of the present embodiment is constituted by a main body tube 34 having a cylindrical cross-sectional shape and a cylindrical inner partition wall 36 having a slightly smaller outer diameter inserted therein. ing. The inside of the adhesive container 32 is divided into two inside and outside accommodation chambers by the internal partition wall 36. Therefore, the internal partition wall 36 corresponds to an internal partition wall that divides the inside of the adhesive container in the invention according to claim 4 into two internal and external storage chambers. Body tube 3
The tip of 4 is a nozzle portion 34a whose outer diameter is narrowed and opened to the outside.

As shown in FIG. 3, an adhesive 10A having a hardened hardness is accommodated in a housing chamber outside the internal partition 36, and a hardened adhesive 10A is accommodated in the housing chamber inside the internal partition 36. A hard adhesive 12A having a hardness of? Accordingly, by applying pressure to the main body tube 34, the hard adhesive 12A having a hardened state is squeezed out from the center of the nozzle portion 34a, and the soft adhesive 10A having a hardened state is hardened from the periphery thereof. .

Next, the adhesive container 32 having such a structure will be described.
A specific example of the bonding between the outer plate of the vehicle body and the reinforcing member using the method will be described with reference to FIG. First, as shown in FIG. 4A, an adhesive is applied on the reinforcing member 20. That is, when the worker applies pressure to the main body tube 34 by hand or using an automatic squeezing device, as shown in FIG.
An adhesive 12A having a hard hardness when hardened is squeezed out from the center of a, and an adhesive 10A having a soft hardness when hardened is squeezed out around the center. Thereafter, the reinforcing member 20 is spot-welded to the pillar 24 to form a side panel (outer plate) 22.
Put on. As a result, the adhesive 10A having a soft hardness when hardened adheres to the reinforcing member 20 and the side panel 22, and the adhesive 12A having a hard hardness when hardened therebetween.
Will be arranged.

Thereafter, the vehicle body is subjected to electrodeposition coating and heated and dried. Thereby, as shown in FIG. 4B, the adhesives 10A and 12A are cured, and the cured adhesive layer 1 is cured.
0B and 12B are formed. At this time, the side panel 22
Since the adhesive 10A, which is soft when hardened, is in close contact with the side panel, sink marks, distortion, and the like do not occur on the side panel 22. Further, the hardened adhesive 12A having a hardened hardness when it is disposed inside the adhesive 10A is used as the hardened adhesive layer 1.
With 2B, the tension of the side panel 22 is reliably maintained. As described above, in the present embodiment, the adhesive 10A having a soft hardness when hardened and the adhesive 1A having a hard hardness are used.
By bonding the outer plate 22 and the reinforcing member 20 with a 2A double structure, the problems of the prior art can be solved, the workability is low, the workability is good, and sinks and distortions are generated in the outer plate 22. This is a method of bonding the outer plate 22 of the vehicle body and the reinforcing member 20 without any.

In each of the above embodiments, the case where the bonding method according to the first and third aspects of the present invention is applied to a vehicle body of a bus is described, but each bonding method is applied to other types of vehicle bodies. It is possible to apply. Further, in each of the above embodiments, the adhesive container according to the second and fourth aspects of the invention has been described with respect to an example in which the cross section is circular, but the shape of each adhesive container is not limited to this. The shape is not limited, and various shapes such as a rectangular or a polygon such as a hexagon can be used. further,
In each of the above embodiments, the adhesive container according to the second and fourth aspects of the invention has a structure in which the nozzle portion is partitioned by a partition or an internal partition, but the nozzle portion is not necessarily partitioned. good. The other steps of the bonding method and the structure, materials,
The shape, number, connection relationship, and the like are not limited to the above embodiments.

[0018]

According to the first and third aspects of the present invention, there is provided a method for bonding an outer plate of a vehicle body to a reinforcing member which is low in cost, has good workability, and is free from sink marks and distortions. Is provided. In the inventions according to claims 2 and 4, the bonding method according to claim 1 or 3 can be easily and reliably performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view and a transverse sectional view showing the entire structure of a first embodiment of an adhesive container according to the present invention.

FIG. 2 is a view showing a first embodiment of a method for bonding a skin of a vehicle body and a reinforcing member according to the present invention.

FIG. 3 is a longitudinal sectional view and a transverse sectional view showing the entire structure of a second embodiment of the adhesive container according to the present invention.

FIG. 4 is a view showing a second embodiment of the method for bonding the outer plate of the vehicle body and the reinforcing member according to the present invention.

FIG. 5 is a diagram showing a method for bonding a skin of a vehicle body and a reinforcing member according to a conventional technique.

[Explanation of symbols]

 2, 32 Adhesive containers 6a, 8a Partition wall 6 First storage chamber 8 Second storage chamber 10A Adhesive having a soft hardness when hardened 12A Adhesive having a hard hardness when hardened 20 Reinforcement material 22 Outer plate 36 Inside Partition wall 40 Body

Claims (4)

[Claims] 1. A method of bonding an outer plate of a vehicle body and a reinforcing material, the method comprising: applying a soft adhesive having a hardness when hardened to the outer plate side; A bonding method, wherein the outer plate and the reinforcing material are bonded to each other by applying a hard adhesive. 2. An adhesive container for performing the bonding method according to claim 1, wherein the inside of the adhesive container is divided into two storage chambers by a partition wall,
An adhesive container, wherein an adhesive having a soft hardness when hardened is housed in a first housing chamber, and an adhesive having a hard hardness when hardened is housed in a second housing chamber. 3. A method for bonding an outer plate of a vehicle body and a reinforcing material, wherein a soft adhesive having a hardness when hardened is applied to the side of the outer plate and the reinforcing material. Bonding the outer plate and the reinforcing member by disposing an adhesive having a high hardness when hardened inside a soft adhesive having a low hardness. 4. An adhesive container for performing the bonding method according to claim 3, wherein the interior of the adhesive container is divided into two inner and outer storage chambers by an internal partition, and the outer storage chamber has An adhesive container, wherein a soft adhesive having a hardened hardness is stored therein, and an adhesive having a hardened hardness is stored in an inner storage chamber.