TWI752173B - Joining method and parts joining structure - Google Patents

Abstract

The subject of the present invention is to include a metal first component having an opening and having a plurality of first rivet holes in the first region of the peripheral edge of the opening, and the opening that covers the first component from one side. , and has a second area corresponding to the first area, and the second area has a plurality of second rivet holes corresponding to the plurality of first rivet holes of the first component, and the metal second parts are joined to each other In the method of the present invention, there is provided a method that can completely seal the opening portion while maintaining sufficient bonding strength.

The solution of the present invention includes a coating process of applying an adhesive, a joining process of positioning while joining, a fixing process using a rivet, and applying a sealant to the exposed surface of the second component and the entire circumference of the opening portion. On the other hand, an airtight sealing process is performed to block the entire circumference of the opening. The adhesive is an acrylic adhesive, and the sealant is a urethane-based sealant.

Description

Joining method and parts joining structure

The present invention relates to a method of covering the opening of the first component with the second component. In particular, the present invention relates to a metal first component having an opening and having a first rivet hole in a first region of the peripheral edge of the opening, and a metal component having the opening covering the first component from one side. shape, and has a second area corresponding to the first area, and the second area has a plurality of second rivet holes corresponding to the plurality of first rivet holes of the first component. method.

First, with respect to a metal first component having an opening and having a plurality of first rivet holes in the first region of the peripheral edge of the opening, and a shape having the opening covering the first component from one side, A method of joining metal second parts with a second area corresponding to the first area, and a plurality of second rivet holes corresponding to the plurality of first rivet holes of the first component in the second area. The prior art is described.

Patent Document 1 discloses a joint method of using a rivet and an adhesive in combination. By applying the technology disclosed in Patent Document 1, the joining of the first component and the second component can be realized by the following process.

That is, (i) applying an adhesive to at least one of the surface on the one side of the first region of the first component and the surface on the other side of the second region of the second component facing each other At least a part of the coating process, (ii) while positioning the first part and the second part with each other, joining the surface on the one side of the first region of the first part and the first part of the second part The joining process of the surface on the other side of the second area, and (iii) after the joining process, the plurality of first rivet holes of the first component and the plurality of second rivet holes of the second component are used to correspond Each group of rivets passing through in common is used to fasten the first part and the second part to each other.

By joining the first part and the second part through these processes, as described in Patent Document 1, it is possible to realize the same degree of rigidity and strength as the joining by the welding operation that requires a skilled worker, and further, it is possible to realize Better shock resistance (resonance characteristics) than joints caused by welding operations.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Laid-Open No. 8-317514

The opening cannot be completely hermetically sealed only by the joining through the above-mentioned process. The inventors of the present invention have repeatedly conducted intensive examinations to further apply the sealant to the opening after joining for such a purpose.

As a universal adhesive for joining metal parts, there is an epoxy adhesive. However, according to various trial experiments by the inventors of the present application, it was found that the epoxy-based adhesive cannot achieve sufficient adhesive strength in an environment where the sealant is mixed.

The present invention has been made based on the above knowledge. The object of the present invention is to combine a metal first component having an opening and having a first rivet hole in a first region of the peripheral edge of the opening, and a metal component having the opening covering the first component from one side. shape, and has a second area corresponding to the first area, and the second area has a plurality of second rivet holes corresponding to the plurality of first rivet holes of the first component. In the method, there is provided a method in which the opening portion can be completely hermetically sealed while maintaining sufficient bonding strength.

The present invention is a method for joining a first member and a second member, the first member having an opening, and a metal having a plurality of first rivet holes in a first region of the peripheral edge of the opening. A first component; the second component has a shape covering the opening of the first component from one side, and has a second area corresponding to the first area, and the second area has a corresponding first component in the second area. The metal second part of the plurality of second rivet holes of the plurality of first rivet holes; characterized by comprising: a coating step of applying an adhesive to the first regions of the first parts facing each other at least a part of at least one of the surface on one side and the surface on the other side of the second region of the second component; the joining process is to join the first component and the second component while positioning the first component and the second component with each other. The surface on the one side of the first region of the first part and the surface on the other side of the second region of the second part; the fixing process is performed after the joining process, and the corresponding first part is used. Each group of the plurality of first rivet holes of the component and the plurality of second rivet holes of the second component pass through rivets in common, so as to fasten the first component and the second component to each other; and the sealing process is to seal The agent is applied to the area of the second component exposed on the other side through the opening and is close to the entire circumference of the opening, and the entire circumference of the opening is hermetically sealed; the adhesive is acrylic adhesive. agent; the aforementioned sealant is an urethane-based sealant.

According to the present invention, the opening can be completely hermetically sealed by applying the sealant to the opening after joining (sealing process). The inventors of the present application have confirmed that leakage does not occur even under an air pressure of 1000 Pa with respect to the air-sealed opening. Then, by using the acrylic adhesive as the adhesive, the mixing of the sealant does not have an intentional adverse effect on the adhesive strength. In addition, the acrylic adhesive also has a characteristic that the impact resistance is superior to that of the epoxy adhesive.

Furthermore, by using the urethane-based sealant as the sealant, in addition to sufficient airtightness, sufficient durability can be realized. As a sealant, a siloxane-based sealant is also known, but according to various pilot experiments by the inventors of the present application, it was found that when a siloxane-based sealant is used in combination with the acrylic-based adhesive after the bonding process, compared with Urethane-based sealants cannot achieve sufficient adhesive strength.

For example, it is preferable that the said adhesive agent (acrylic adhesive agent) contains 40-50% of methyl methacrylate and 20-40% of methacrylates containing 2-ethylhexyl methacrylate, respectively.

In another example, the aforementioned sealant (urethane-based sealant) preferably contains 20 to 30% of a urethane prepolymer.

Furthermore, in the joining process, at least one set of the plurality of first rivet holes of the corresponding first component and the plurality of second rivet holes of the second component are used to pass through at least one set in common, and the above-mentioned Preferably, the first part and the second part are mutually positioned so as to join the surface on the one side of the first region of the first part and the surface on the other side of the second region of the second part.

Moreover, this invention is a structure manufactured by the above method. That is, the present invention is a structure formed by joining a first part and a second part, the first part having an opening, and a plurality of first rivets are provided in a first region of the periphery of the opening. A metal first part of a hole; the second part has a shape covering the opening of the first part from one side, and has a second area corresponding to the first area, and the second area has a A metal second component corresponding to the plurality of second rivet holes of the first component and the plurality of second rivet holes; characterized by comprising: an adhesive attached to the first regions of the first components facing each other Adhesive on at least a part of at least one of the surface of the one side and the surface of the other side of the second region of the second part; the rivet is to correspond to the plurality of first rivet holes of the first part and each group of the plurality of second rivet holes of the second component are passed through in common; and a sealant is applied to the surface of the second component exposed to the other side through the opening and the entire circumference of the opening Accessible area; The entire circumference of the opening is sealed by the sealant, and no leakage occurs even under an air pressure of 1000Pa.

As described above, the adhesive agent preferably contains 40 to 50% of methyl methacrylate and 20 to 40% of methacrylates containing 2-ethylhexyl methacrylate, respectively, and the sealing agent is preferably It is preferable to use 20-30% urethane prepolymer. In this case, the degassing performance of the openings by the sealant can be achieved, and the increase of the methacrylates is 1 μg/m ³ or less, and the increase of other components is 0.2 μg/m ³ or less.

As an example, this structural system wash tank.

Alternatively, the present invention is a method of joining a first member and a second member, the first member having an opening, and a metal having a plurality of first rivet holes in a first region of the periphery of the opening. The first part made of; the second part has a shape covering the opening of the first part from one side, and has a second area corresponding to the first area, and the second area has a corresponding to the first area. A metal second component of the plurality of first rivet holes and the plurality of second rivet holes of the component; characterized by comprising: a first coating step of applying a sealant to the first components of the first components facing each other. At least a part of at least one of the opening portion side of the one side surface of the first area and the opening portion side of the other side surface of the second area of the second component; the second coating process will be followed by The agent is applied to at least one of the surface on the one side of the first region of the first component and the surface on the other side of the second region of the second component that face each other without the sealant applied. At least a part of the joining process is to join the surface on the one side of the first area of the first component and the second area of the second component while positioning the first component and the second component with each other. The surface on the other side is covered with the sealant to cover the entire circumference of the opening; and the fixing process is performed after the joining process, using the plurality of first rivet holes corresponding to the first component and the Each group of the plurality of second rivet holes of the second component is a rivet that passes through in common to fasten the first component and the second component to each other; the adhesive is an acrylic adhesive; the sealant is urethane Ethyl ester sealant.

According to the present invention, the opening can be completely hermetically sealed by applying the sealant to the opening before joining (the first coating process). The inventors of the present application have confirmed that leakage does not occur even under an air pressure of 1000 Pa with respect to the air-sealed opening. Then, by using the acrylic adhesive as the adhesive, the mixing of the sealant does not have an intentional adverse effect on the adhesive strength. In addition, the acrylic adhesive also has a characteristic that the impact resistance is superior to that of the epoxy adhesive.

Furthermore, by using the urethane-based sealant as the sealant, in addition to sufficient airtightness, sufficient durability can be realized. As a sealant, a siloxane-based sealant is also known, but according to various pilot experiments by the inventors of the present application, it was found that when a siloxane-based sealant is used in combination with the acrylic-based adhesive after the bonding process, compared with Urethane-based sealants cannot achieve sufficient adhesive strength.

For example, it is preferable that the said adhesive agent (acrylic adhesive agent) contains 40-50% of methyl methacrylate and 20-40% of methacrylates containing 2-ethylhexyl methacrylate, respectively.

In another example, the aforementioned sealant (urethane-based sealant) preferably contains 20 to 30% of a urethane prepolymer.

Furthermore, in the joining process, at least one set of the plurality of first rivet holes of the corresponding first component and the plurality of second rivet holes of the second component are used to pass through at least one set in common, and the above-mentioned Preferably, the first part and the second part are mutually positioned so as to join the surface on the one side of the first region of the first part and the surface on the other side of the second region of the second part.

Moreover, this invention is a structure manufactured by the above method. That is, the present invention is a structure formed by joining a first part and a second part, the first part having an opening, and a plurality of first rivets are provided in a first region of the periphery of the opening. A metal first part of a hole; the second part has a shape covering the opening of the first part from one side, and has a second area corresponding to the first area, and the second area has a A metal-made second component corresponding to the plurality of second rivet holes of the first component and the plurality of first rivet holes; characterized by comprising: a sealant in the first region of the first component facing each other A sealant on at least a part of at least one of the opening portion side of the one side surface and the opening portion side of the other side surface of the second region of the second component; the adhesive agent is opposed to each other. The adhesive on at least a part of at least one of the surface of the one side of the first region of the first part and the surface of the other side of the second region of the second part; and the rivet, which will correspond to Each group of the plurality of first rivet holes of the first part and the plurality of second rivet holes of the second part pass through in common; by the sealant, the entire circumference of the opening is hermetically sealed, even in the 1000Pa air pressure will not leak.

As described above, the adhesive agent preferably contains 40 to 50% of methyl methacrylate and 20 to 40% of methacrylates containing 2-ethylhexyl methacrylate, respectively, and the sealing agent is preferably It is preferable to use 20-30% urethane prepolymer. In this case, the degassing performance of the openings by the sealant can be achieved, and the increase of the methacrylates is 1 μg/m ³ or less, and the increase of other components is 0.2 μg/m ³ or less.

As an example, this structural system wash tank.

According to the present invention, the opening can be hermetically sealed by further applying the sealant to the opening after joining (sealing process). Alternatively, according to the present invention, the opening can be completely hermetically sealed by applying the sealant to the opening before joining (first coating process). Then, by using the acrylic adhesive as the adhesive, the mixing of the sealant does not have an intentional adverse effect on the adhesive strength. In addition, the acrylic adhesive also has a characteristic that the impact resistance is superior to that of the epoxy adhesive.

Furthermore, by using the urethane-based sealant as the sealant, in addition to sufficient airtightness, sufficient durability can be realized. When a siloxane-based sealant is used in combination after the bonding process using the acrylic adhesive, sufficient adhesive strength cannot be achieved compared to the urethane-based sealant.

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

1 is a schematic perspective view showing a first part and a second part before joining according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view of the first part and the second part after joining from the inside.

As shown in FIG. 1, the first component 10 of the present embodiment is composed of a metal such as stainless steel having a square outer circumference and an inner circumference which are similar to each other in plan view, and the inner circumference defines a square-shaped opening 18 opened on the upper side. The upper plate member 12 , which is a thin plate member (sheet metal) made of the upper plate member 12 , is composed of four metal side plate members 15 welded to the peripheral surfaces (peripheries) of the four (four sides) of the upper plate member 12 , respectively.

In the example shown in FIG. 1 , each side plate member 15 is configured in the same form as the upper plate member 12 (predetermining a square-shaped opening opening on each side side), but the form of each side plate member 15 does not have any restrictions. In addition, in the example shown in FIG. 1, each side plate member 15 is welded to the upper plate member 12, but may be formed integrally with the upper plate member 12 and may be bent. The material of the upper plate member 12 is aluminum, brass, copper, cold-rolled steel, mild steel, tin-plated iron, nickel, titanium, galvanized steel, galvanized iron, or the like.

Also, as shown in FIG. 1 , eight first rivet holes 14 penetrating the vertical direction are arranged approximately equally in the upper plate member 12 , which is a peripheral region (first region) of the opening 18 of the first component 10 .

On the other hand, as shown in FIG. 1 , the second component 20 of the present embodiment is a thin plate member (sheet metal) made of metal such as stainless steel having a shape covering the opening 18 of the first component 10 from the upper side, and has a corresponding The first region is the second region 22 of the upper plate member 12 , and eight second rivet holes 24 corresponding to the eight first rivet holes 14 of the first component 10 are provided in the second region 22 .

In the example shown in FIG. 1, although the circular hole for piping etc. is provided in the center area|region of the 2nd component 20, the presence or absence and shape are arbitrary. The material of the second component 20 is also aluminum, brass, copper, cold rolled steel, soft Steel, tinned iron sheet, nickel, titanium, galvanized steel sheet, galvanized iron, etc.

According to the present embodiment, the first component 10 and the second component 20 as described above are joined according to the following process.

First, an acrylic adhesive is applied to at least one of the surface on the upper side of the upper plate member 12 (first region) of the first component 10 and the surface on the lower side of the second region 22 of the second component 20 that face each other at least part of (coating process).

Next, while positioning the first part 10 and the second part 20 with each other, the surface on the upper side of the upper plate member 12 (first region) of the first part 10 and the second part of the second part 20 which face each other are joined. The lower surface of the region 22 (bonding process).

Here, in order to facilitate high-accuracy positioning, a rod-shaped rod-shaped configuration is used that passes through at least one corresponding group of the eight first rivet holes 14 of the first component 10 and the eight second rivet holes 24 of the second component 20 in common. A member (called a hole alignment rod) is preferred. This makes it possible to smoothly join the upper surface of the upper plate member 12 (first region) of the first component 10 while positioning the first component 10 and the second component 20 with each other very easily and maintaining such a positional state. and the lower surface of the second region 22 of the second part 20 . That is, bonding by the adhesive can be performed in a desired relative positional relationship.

Next, the first component 10 and the second component 20 are fastened to each other using the rivets 30 that pass through each group of the eight first rivet holes 14 of the corresponding first component 10 and the eight second rivet holes 24 of the second component 20 in common. The second component 20 (fixing process). The rivet 30 is, for example, the type "SSD-42-SSH" manufactured by Nippon Pop Rivets and Fasteners, and known rivets can be used for the fixing operation. Nail gun to carry out.

Then, a sealant 40 (also referred to as a caulking agent) is applied to an area close to the entire circumference of the opening 18 on the surface of the second component 20 exposed through the opening 18 on the lower side with the notified caulking gun. ) to hermetically seal the entire circumference of the opening 18 (sealing process). FIG. 2 shows the state after the sealant 40 is applied.

According to the present embodiment described above, by further applying the sealant 40 to the openings 18 after joining, the openings 18 can be completely hermetically sealed.

The openings were actually inspected for the situation that the type "HARDLOC M-600-08A" manufactured by Nippon Denki Chemical Co., Ltd. was used as the acrylic adhesive, and the type "Sikaflex-SCR" manufactured by Japan Sika Corporation was used as the sealant 40. Leakage characteristics of 18 (the opening 18 is a square with one side of about 25 cm (conform to the drawing), the diameter of the first rivet hole 14 and the second rivet hole 24 is 3.3 mm, the thickness of the upper plate member 12 is 1 mm, the second The thickness of the parts 20 is 1 mm, the adhesive agent is applied to the entire upper surface of the upper plate member 12, and the width of the upper surface of the upper plate member 12 (the width from the inner circumference to the outer circumference) is 30 mm). Specifically, a leak detection liquid (Snoop) was applied to the inspection target area with a pen, and the presence or absence of air bubbles was visually confirmed to determine the presence or absence of leakage.

The results of the leakage characteristic test are disclosed in FIG. 3 . As shown in FIG. 3 , in the opening 18 which was hermetically sealed according to the present embodiment, it was confirmed that no leakage occurred even under an air pressure of 1000 Pa.

Moreover, as a result of evaluating the degassing performance of the opening 18 by the sealant 40, the increase of the methacrylates was 1 μg/m ³ or less, and the increase of the other components was 0.2 μg/m ³ or less.

The present embodiment as described above can be effectively used in the manufacture of a kitchen sink, the manufacture of a vending machine casing, and the like. Furthermore, it can also be effectively used in the manufacture of catheters and the like used in special environments.

The characteristics of the type "HARDLOC M-600-08A" manufactured by Nippon Denki Chemical Industry Co., Ltd. are disclosed in Fig. 4 (extracted from the "Product Safety Data Sheet" produced by Nippon Denki Chemical Co., Ltd.). Also in FIG. 4, the characteristics of the type "HARDLOC M-600-08B" which can be used ideally in the present invention are also taken into account.

Fig. 5 is a graph showing the composition of "HARDLOC M-600-08A", and Fig. 6 is a graph showing the composition of the model "HARDLOC M-600-08B" (from the "Product Safety Data Sheet" made by Nippon Denki Chemical Industry Co., Ltd. capture).

The composition and content of the type "Sikaflex-SCR" manufactured by Japan Sika Company are 20~30% of urethane prepolymer, 20~30% of plasticizer, and 40~50% of pigment and filler. , the solvent is 0%, the additives and catalysts are 1~3%, and the dangerous and harmful ingredient is titanium oxide, and its content is 3~4% (extracted from the "Product Safety Data Sheet" made by Sika Corporation of Japan).

Furthermore, the inventors of the present application have repeatedly conducted various trial experiments and found that if an epoxy-based adhesive is used as the adhesive, the mixing of the sealant 40 will cause an intentional adverse effect on the adhesive strength, and an acrylic-based adhesive is used as the adhesive. If the adhesive is used, even if it is mixed with the sealant 40, it will not affect the Then there was the discovery that strength caused an intentional adverse effect.

Then, in order to clarify this finding, a comparative experiment was conducted with respect to the adhesive strength (tensile strength) when the adhesive and the sealant were actively mixed. Specifically, the type "HARDLOC M-600-08A" manufactured by Nippon Denki Chemical Co., Ltd. was used as the acrylic adhesive, and the product manufactured by Konishi Co., Ltd. was used as the epoxy adhesive. The type "BondQuick5 #16123", as the urethane-based sealant, the above-mentioned type "Sikaflex-SCR" manufactured by Sika Corporation of Japan was used, and as the silicone-based sealant, the Cemedine Co. , Ltd.) of the type "BathCulkN HJ-146", evaluation of individual combinations and even the blending ratio of the bonding strength (tensile strength).

The tensile test was carried out in accordance with the test method of JIS6850. The test piece was based on SUS430. As shown in FIG. 7, the length was 100 mm, the width was 25 mm, and the thickness was 2 mm. hours or more.

Figure 8 is a graph revealing tensile measurements. As shown in Examples 1 to 3 in FIG. 8 , it can be seen that in the case of a combination of an acrylic adhesive (HARDLOC M-600-08A) and a urethane-based sealant (Sikaflex-SCR), even if the amount of the sealant mixed Sufficient adhesive strength can be maintained even when increased to 30%.

On the other hand, as shown in Comparative Examples 11 to 12 of FIG. 8 , it can be seen that if it is a combination of an acrylic adhesive (HARDLOC M-600-08A) and a siloxane-based sealant (BathCulkN HJ-146), even if it is sealed agent The mixing amount is 20%, and the bonding strength cannot be maintained.

In addition, as shown in Comparative Examples 21 to 22 and 31 to 32 of FIG. 8 , in the case of using an epoxy-based adhesive (BondQuick5 #16123), it can be seen that in combination with a urethane-based sealant (Sikaflex-SCR) In this case, or in the case of a combination with a silicone-based sealant (BathCulkN HJ-146), there is a possibility that the bond strength is greatly reduced.

However, depending on the form of the first component 10 and/or the second component 20, it is conceivable that it is impossible or difficult to perform the sealing process after the joining process and the fixing process are performed. For example, in the embodiment shown in FIG. 1 , when the side plate member 15 does not have an opening, it is difficult to carry out the sealing work performed from the lower side (back side).

In order to cope with such a situation, the inventors of the present application further examined and found that the following embodiments are effective in this situation.

In addition, the matters described with respect to the first component 10 and the second component 20 in the above-mentioned embodiment are also applicable to the following embodiments. For example, the following embodiments are also suitable for the first component 10 (the side plate member 15 has an opening) and the second component 20 in the form shown in FIG. 1 .

In the present embodiment, first, the sealant is applied to the opening side of the upper surface of the upper plate member 12 (first region) of the first component 10 facing each other and the second region 22 of the second component 20. At least a part of at least one of at least one of the lower surface on the side of the opening. For example, as shown in FIG. 9 , the sealant is applied to the entire circumference of the opening portion side (inner side) of the upper surface of the upper plate member 12 (first region) of the first component 10 (first application process).

In this first coating process, in order to apply only a desired area It is preferable to apply a sealant to the area, and affix a masking tape to the outer area of the upper surface of the upper plate member 12 (the first area) to perform the operation. Moreover, it is preferable to apply|coat so that a sealant may be applied uniformly (the height after application|coating is uniform) using the spatula made from a sponge.

Next, when the masking tape is used for the first coating process, it is peeled off, and the acrylic adhesive is coated on the upper surface of the upper plate member 12 (first region) of the first component 10 and the second component facing each other. At least one of the surfaces on the lower side of the second region 22 of 20 is not coated with at least a part of the sealant (second coating process).

Then, while positioning the first part 10 and the second part 20 with each other, the surface on the upper side of the upper plate member 12 (first region) of the first part 10 and the second part of the second part 20 that face each other are joined. On the lower surface of the region 22 , the sealant covers the entire circumference of the opening 18 (bonding process).

Here, as in the previous embodiment, in order to facilitate high-precision positioning, a group in which at least one of the eight first rivet holes 14 of the first component 10 and the eight second rivet holes 24 of the second component 20 corresponds to at least one is used A rod-shaped member (called a hole alignment rod) that penetrates in common is preferable. According to this, it is possible to smoothly join the upper surface of the upper plate member 12 (first region) of the first component 10 while positioning the first component 10 and the second component 20 with each other very easily and maintaining such an aligned state. With the lower surface of the second region 22 of the second component 20 , the sealant is allowed to smoothly cover the entire circumference of the opening 18 . That is, the bonding by the adhesive and the setting of the sealant can be performed in a desired relative positional relationship.

Next, each group of the eight first rivet holes 14 of the corresponding first component 10 and the eight second rivet holes 24 of the second component 20 are pierced in common by using The rivet 30 is used to fasten the first component 10 and the second component 20 to each other (fixing process). The rivet 30 is the same as the aforementioned embodiment, for example, the type "SSD-42-SSH" manufactured by Nippon Pop Rivets and Fasteners, and the fixing operation can be performed using a known rivet gun.

According to the present embodiment as described above, the opening portion 18 can be completely hermetically sealed.

The openings were actually inspected for the situation that the type "HARDLOC M-600-08A" manufactured by Nippon Denki Chemical Co., Ltd. was used as the acrylic adhesive, and the type "Sikaflex-SCR" manufactured by Japan Sika Corporation was used as the sealant 40. Leakage characteristics of 18 (the opening 18 is a square with one side of about 25 cm (conform to the drawing), the diameter of the first rivet hole 14 and the second rivet hole 24 is 3.3 mm, the thickness of the upper plate member 12 is 1 mm, the second The thickness of the part 20 is 1 mm, the sealant is applied to the upper surface of the upper plate member 12 on the inner peripheral side of the area 12a with a width of 10 mm, and the adhesive is applied to the upper surface of the upper plate member 12. The area 12b on the outer peripheral side with a width of 20 mm ( Entire face not coated with sealant)). Specifically, a leak detection liquid (Snoop) was applied to the inspection target area with a pen, and the presence or absence of air bubbles was visually confirmed to determine the presence or absence of leakage.

The results of the leakage characteristic test were the same as those of the foregoing embodiment ( FIG. 3 ). That is, in the opening part 18 which was hermetically sealed according to the present embodiment, it was confirmed that no leakage occurred even under the air pressure of 1000 Pa.

In addition, as a result of evaluating the degassing performance of the opening 18 according to the present embodiment, the increase of methacrylates is 1 μg/m ³ or less, and the increase of other components is 0.2 μg/m as in the previous embodiment. ³ or less.

The present embodiment as described above can also be effectively used in the manufacture of kitchen sinks, the manufacture of vending machine housings, and the like. Furthermore, it can also be effectively used in the manufacture of catheters and the like used in special environments.

10‧‧‧First part 12‧‧‧Top plate member (first area) 12a‧‧‧Inner peripheral side area 12b‧‧‧Outer peripheral side area 14‧‧‧First rivet hole 15‧‧‧Side plate member 18‧ ‧‧Opening 20‧‧‧Second Part 22‧‧‧Second Area 24‧‧‧Second Rivet Hole 30‧‧‧Riveting 40‧‧‧Sealant

1 is a schematic perspective view showing a first component and a second component before joining according to an embodiment of the present invention. [Fig. 2] A schematic perspective view of the first and second parts after joining according to an embodiment of the present invention, viewed from the inside. [Fig. 3] A graph showing the test results of the leakage characteristics of the joined first and second parts according to an embodiment of the present invention. [Fig. 4] A graph showing the properties of an ideal adhesive. [Fig. 5] A graph showing an example of the composition of an ideal adhesive. [Fig. 6] A graph showing other composition examples of ideal adhesives. [Fig. 7] An abbreviated plan view of the test piece used in the tensile test. [Fig. 8] A graph showing the results of tensile experiments. [ Fig. 9] Fig. 9 is a schematic perspective view showing the first part and the second part before joining according to another embodiment of the present invention.

Claims (20)

A joining method for joining a first component and a second component to each other, the first component having an opening, and a first region of the periphery of the opening having a plurality of first rivet holes in a first region of metal. A component; the second component has a shape covering the opening of the first component from one side, has a second area corresponding to the first area, and has the second area corresponding to the first component, respectively A metal second component of a plurality of second rivet holes of a plurality of first rivet holes, characterized by comprising: a coating step of applying an adhesive to the one side of the first region of the first components facing each other at least a part of at least one of the surface and the surface on the other side of the second region of the second component; the joining process is to join the first component and the second component while positioning the first component and the second component. The surface of the one side of the first area of the component and the surface of the other side of the second area of the second component; the fastening process is after the joining process, using the corresponding first component. The plurality of first rivet holes and the plurality of second rivet holes of the second component have rivets that pass through in common, so as to fasten the first component and the second component to each other; and the sealing process is to apply a sealant The surface of the second component exposed on the other side through the opening portion is close to the entire circumference of the opening portion , the entire circumference of the opening is sealed airtightly; the adhesive is an acrylic adhesive; the sealant is a urethane-based sealant. The bonding method described in claim 1, wherein the adhesive agent contains 40 to 50% of methyl methacrylate and 20 to 40% of methyl methacrylate containing 2-ethylhexyl methacrylate, respectively. based acrylates. The joining method described in claim 1 or claim 2, wherein the sealant contains 20 to 30% of a urethane prepolymer. The joining method according to claim 1 or claim 2, wherein, in the joining process, the plurality of first rivet holes of the first component and the plurality of second rivet holes of the second component are used. At least one set of rod-shaped members penetrating in common through the rivet holes joins the first part and the second part on the one side surface of the first region and the second part while positioning the first part and the second part with each other. The surface on the other side of the second region of the component. A part joining structure formed by joining a first part and a second part The component joining structure is a metal first component having an opening portion and a plurality of first rivet holes in a first region of the periphery of the opening portion; the second component has an opening from one side Covering the shape of the opening of the first component, and having a second area corresponding to the first area, the second area has one of the plurality of second rivet holes corresponding to the plurality of first rivet holes of the first component, respectively. A second metal component, characterized by comprising: an adhesive on the surface of the one side of the first region of the first component and the other side of the second region of the second component facing each other Adhesive on at least a part of at least one of the side surfaces; rivets that pass through each group of the plurality of first rivet holes of the corresponding first part and the plurality of second rivet holes of the second part in common; and a sealant, which is applied to the area where the surface of the second component, which is exposed on the other side through the opening, is close to the entire circumference of the opening, and the entire circumference of the opening is hermetically sealed by the sealant. It will not leak even under the air pressure of 1000Pa. The parts joining structure described in claim 5, wherein the adhesive is an acrylic adhesive, and the sealant is a urethane-based sealant. The parts-joining structure according to claim 5 or claim 6, wherein the adhesive agent contains 40-50% methyl methacrylate and 20-40% methacrylic acid 2- Methacrylates of ethylhexyl. The parts-joining structure according to claim 5 or claim 6, wherein the degassing performance of the openings due to the sealant is 1 μg/m ³ or less in increments of methacrylates , and the increment of other components is 0.2 μg/m ³ or less. The parts joining structure described in claim 5 or claim 6, wherein the sealant contains 20 to 30% of a urethane prepolymer. The parts-joining structure described in claim 5 or 6 of the scope of the application, wherein the parts-joining structure is a washing tub. A joining method, which is a joining method for joining a first part and a second part, the first part having an opening part, at the periphery of the opening part. The first area is a metal first component having a plurality of first rivet holes; the second component has a shape covering the opening of the first component from one side, and has a second area corresponding to the first area a metal second part having a plurality of second rivet holes corresponding to the plurality of first rivet holes of the first part respectively in the second region; it is characterized by having: a first coating process, which is to coat the sealant on the At least one of the opening portion side of the surface on the one side of the first region of the first component and the opening portion side of the surface of the second region of the second component facing each other At least a part; the second coating process is to coat the adhesive agent on the surface of the one side of the first region of the first component and the surface of the other side of the second region of the second component that face each other At least one part of at least one of which is not coated with the sealant; the joining process is to join the surface of the first part on the one side of the first region of the first part while positioning the first part and the second part with each other and the surface on the other side of the second region of the second component, and the sealant covers the entire circumference of the opening; and the fixing process is performed after the joining process, using the corresponding first Each group of the plurality of first rivet holes of the first part and the plurality of second rivet holes of the second part pass through the rivets in common to fasten the first part and the second part to each other; and the adhesive agent, which is Acrylic adhesive; the aforementioned sealant is a urethane-based sealant. The bonding method according to claim 11, wherein the adhesive agent contains 40 to 50% of methyl methacrylate and 20 to 40% of methyl methacrylate containing 2-ethylhexyl methacrylate, respectively. based acrylates. The joining method according to claim 11 or claim 12, wherein the sealant contains 20 to 30% of a urethane prepolymer. The joining method according to claim 11 or claim 12, wherein, in the joining process, the plurality of first rivet holes of the first component and the plurality of second rivet holes of the second component are used. At least one set of rod-shaped members penetrating in common through the rivet holes joins the first part and the second part on the one side surface of the first region and the second part while positioning the first part and the second part with each other. The surface on the other side of the second region of the component. A component joining structure, which is a component joining structure formed by joining a first component and a second component, the first component has an opening, and a first region of the periphery of the opening has a plurality of first rivet holes. the first part of metal; The second part has a shape covering the opening of the first part from one side, and has a second region corresponding to the first region, and the second region has the plurality of first parts corresponding to the first parts, respectively. A metal second member of a plurality of second rivet holes of 1 rivet hole; characterized by comprising: a sealant on the side of the opening on the surface of the one side of the first region of the first member facing each other and the sealant on at least a part of at least one of the opening side of the other side of the second region of the second component; the adhesive is attached to the first component of the first component facing each other. Adhesive on at least a part of at least one of the surface on the one side of the region and the surface on the other side of the second region of the second part; and a rivet that corresponds to the plurality of first parts of the first part. 1. The rivet hole and each group of the plurality of second rivet holes of the second component pass through in common; the entire circumference of the opening is sealed by the sealant, and no leakage occurs even under the air pressure of 1000Pa . The parts joining structure described in claim 15, wherein the adhesive is an acrylic adhesive, and the sealant is a urethane-based sealant. According to the parts-joining structure described in item 15 or 16 of the scope of the patent application, wherein, The aforementioned adhesives contain 40 to 50% of methyl methacrylate and 20 to 40% of methacrylates containing 2-ethylhexyl methacrylate, respectively. The parts-joining structure according to claim 15 or claim 16, wherein the degassing performance of the openings due to the sealant is 1 μg/m ³ or less in increments of methacrylates , and the increment of other components is 0.2 μg/m ³ or less. The parts-joining structure according to claim 15 or claim 16, wherein the sealant contains 20 to 30% of a urethane prepolymer. The parts-joining structure described in claim 15 or 16 of the scope of application, wherein the parts-joining structure is a sink.

Images