JP4044211B2 - Method for bonding and fixing potted component built-in box to base material and potted component storage box used therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for bonding and fixing a potted component built-in box to a base material in the case of bonding and fixing a terminal box of an electric connection portion taken out from an electric component such as a solar power generation module to a substrate, and the method. The present invention relates to a potting component storage box to be used.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, as a method of bonding and fixing the terminal box of the electrical connection part to the substrate from an electrical component such as a photovoltaic power generation module, the terminal box is bonded and fixed to the substrate as the first step, and in the terminal box as the second step. Introducing and connecting the terminals, potting the potting material (protective material) as the third stage, curing the potting material as the fourth stage, and covering the potted box as the fifth stage It has been adopted.
[0003]
In this case, for the bonding and fixing of the terminal box to the substrate, a liquid silicone composition is used for heat resistance and cold resistance, and a one-component adhesive RTV (room temperature curable) silicone composition is mainly used. It is. However, many of the one-component systems are excellent in adhesion, but react with moisture from the surface to cure and adhere, so if the bottom of the terminal box is wide, the time to internal cure is one month. It is often used before it actually hardens. Therefore, the adhesive strength may not be the designed strength, and there is a risk of trouble during construction.
[0004]
On the other hand, as the potting material, a liquid silicone rubber composition is used for heat resistance and cold resistance, and a two-component dealcohol-free RTV silicone rubber composition is mainly used for electric parts. However, if the alcohol-free RTV silicone rubber composition is fully cured before it is covered, it will cause cracking under certain conditions due to the relationship between the catalyst, heat and alcohol, and once cured rubber will return to liquid form. There was a risk that it would end up.
[0005]
In addition, the bonding and potting processes are separate, and the manufacturing plant requires 1-2 days for bonding and 3 days for potting, for a total of 4-5 days. There was a problem that was not suitable.
[0006]
The present invention has been made to improve the above-described circumstances, and can efficiently bond and fix a box with a built-in potted component to a substrate, and can be bonded to a base material of a box with a potted component that can be mass-produced. It is an object of the present invention to provide a method and a potted component storage box used therefor.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a method for bonding and fixing a cylindrical box in which a potted component such as an electrical connection terminal sealed with a potting material is built in a substrate made of glass or plastic. The cylindrical box is formed into a bottomed cylindrical shape, an outflow hole is provided in the bottom or side, a part to be potted is inserted into the bottomed cylindrical box, and a liquid potting material is poured into the box. At the same time, the liquid potting material is caused to flow out of the outflow hole at the same time, the liquid potting material is interposed between the box and the base material, the potting material is then cured, and the parts are potted in the box. together bonded by the potting material without simultaneously sealed, in advance temporarily fixed and the box and the base material at a fixed to To provide an adhesive fixing method to be potted component built box base, characterized in that. Further, the present invention is a method for bonding and fixing a cylindrical box containing a potted component such as an electrical connection terminal sealed with a potting material on a substrate made of glass or plastic, the cylindrical box Is formed in a bottomed cylindrical shape, a ring-shaped protrusion is provided on the outer surface of the bottom, an outflow hole is formed in the bottom so as to communicate with the ring-shaped protrusion, and the bottomed cylindrical box is covered. Inserting a potting component, pouring the liquid potting material into the box, and simultaneously letting out the liquid potting material from the outflow hole, interposing the liquid potting material between the box and the substrate, and then and curing the potting material, while at the same time sealed with potting material in the box the parts, it can keep temporarily fixed in advance and the box and the base Together bonded by the potting material, to provide an adhesive fixing method to be potted component built box base, characterized in that the fixing.
[0008]
According to the present invention, since the bonding between the box and the base material and the potting of the electrical / electronic parts such as electrical connection terminals and other parts to be potted are simultaneously performed, the production efficiency is high, and the mass production is achieved in a short time in a small space It can correspond to.
[0009]
In addition, the present invention is a box in which a potted component such as an electrical connection terminal sealed with a potting material is incorporated, and a first ring-shaped protrusion is projected from the bottom outer surface of the bottomed cylindrical box body. , the inside of the first ring-shaped projection projecting second ring projection, a plurality of liquid potting material flowing out hole in the bottom so as to communicate with the first ring-shaped internal protrusion to exist between these two projections Provided is a potted component storage box formed by drilling.
[0010]
In this box, when the liquid potting material is poured into the box, the liquid potting material is caused to flow out of the outflow hole at the same time, and the liquid potting material is retained in the ring-shaped projections, so that the space between the box and the base material is reduced. The box and the base material are bonded and fixed by curing the potting material, and the box and the base material are firmly and simultaneously bonded when the potted material is sealed with the potting material. is there.
[0011]
In addition, a liquid silicone composition, especially a liquid silicone rubber composition can be used for the liquid potting material.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
For example, as shown in FIG. 1, the present invention is potted to be sealed and protected on a substrate (base material) 1 such as glass or plastic by an electrical / electronic component or other potting material such as an electrical connection terminal. The present invention relates to a method for bonding and fixing a potted component storage box 3 such as a terminal box in which the component 2 is stored and incorporated. In addition, 2a in FIG. 1 shows an electric wire.
[0013]
In the present invention, the box 3 includes a box main body 3a formed in a cylindrical shape (square tube shape, cylindrical shape, etc.). The box main body 3a is a bottomed one or a covered one. However, in the method of the present invention, the potted component 2 is inserted and incorporated in the box 3, and then the liquid potting material 4 is poured into the box 3. The box 3 and the base material 1 are interposed, then the potting material 4 is cured, and the component 2 is sealed with the potting material 4 in the box 3. They are bonded and fixed to each other by the potting material 4 .
[0015]
In addition, the box 3 is generally provided with a bottomed cylindrical box body 3a from the viewpoint of handleability in terms of housing and sealing of electric and electronic components, and such a bottomed cylinder is generally used. When the box 3 is used, when the liquid potting material outflow hole 3d is formed in the bottom 3b or the side 3c of the box body 3a and the liquid potting material 4 is poured into the box 3, the liquid potting material 4 is used. At the same time, the liquid potting material 4 is allowed to flow out from the outflow hole 3d, and the liquid potting material 4 is interposed between the outer surface of the bottom or side of the box and the upper surface of the base material. The substrate 1 and the box 3 can be bonded and fixed (FIGS. 2 and 3 ).
[0016]
In this case, the box 3, it is preferable to use the one shown in FIG. That is, the box 3 shown in FIG. 4 has a first ring-shaped projection 3e protruding from the bottom 3b of the bottomed cylindrical box body 3a along the outer peripheral edge thereof, and at a predetermined interval on the inside thereof. A plurality of outflow holes 3d are formed in the bottom portion 3b so as to project a second ring-shaped projection 3f and communicate with the first ring-shaped projection 3e between the projections 3e and 3f. Yes, when such a box 3 is used, the liquid potting material 4 flows out from the outflow hole 3d into the ring-shaped gap 3g between the projections 3e and 3f when it is injected into the box 3, and this hardens. As a result, the box 3 and the substrate 1 are firmly bonded.
[0017]
As shown in FIG. 5 , the ring-shaped protrusions may be provided so as to be scattered in the form of dots. Outflow holes 3d are formed so as to communicate with the protrusions 3h, and the ring-shaped protrusions are formed from the outflow holes 3d. The liquid potting material that flows out may be sealed in the protrusion 3h.
[0018]
Further, when the outflow hole 3d is provided in the side portion 3c of the box body 3a, as shown in FIG. 6 , a ring-shaped frame 3i is provided on the outer peripheral surface of the side portion 3c so as to flow out of the outflow hole 3d. It is preferable to seal the potting material in the ring-shaped gap 3g between the ring-shaped frame 3i and the side portion 3c. Furthermore, as shown in FIG. 7 , when the base material 1 has a recess 1a and the box body 3a is placed in the recess 1a for bonding and fixing, the potting material 4 that has flowed from the side 3c is removed from the recess 1a. Since it is sealed in, it is not necessary to provide the above frame body, and the presence or absence of the frame body is appropriately selected.
[0019]
In the present invention, the liquid potting material is not particularly limited as long as it has a deep part curable and fluid adhesive and is preferably a liquid silicone composition, particularly a liquid silicone rubber composition. is there. As such a liquid silicone composition, if heat curing is possible, an addition reaction type silicone rubber adhesive containing an alkenyl group-containing organopolysiloxane, an organohydrogensiloxane, and a platinum-based catalyst may be used. However, when the substrate is large and difficult to heat, a room temperature curable (RTV) silicone rubber composition (adhesive) is preferred from the viewpoint of thermal energy. Such an RTV silicone rubber composition is not particularly limited, but in the case of a potting depth, a two-acetone type two-component containing silanol group-blocked organopolysiloxane at both ends and silane or siloxane having an isopropenoxy group The system-curing-adhesive RTV silicone rubber composition can be suitably used where heat is applied to electrical parts.
[0020]
【The invention's effect】
According to the present invention, the connection between the base material and a box containing a potting component to be sealed with a potting material such as an electrical connection terminal, and the sealing and protection of the potting component within the box by the potting material Can be performed efficiently and in a short time in a small space.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view illustrating an embodiment of the present invention.
FIG. 2 is a perspective view showing an example of a potted component storage box.
FIG. 3 is a perspective view showing another example of a potted component storage box.
Figure 4 shows another example of the potting part housing box, (A) is a plan view, (B) is a sectional view taken along (A) Figure A-A line.
FIG. 5 is a plan view showing still another example of the potted component storage box.
FIG. 6 is a cross-sectional view showing still another example of the potted component storage box.
FIG. 7 is a cross-sectional view showing still another example of the potted component storage box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Substrate 2 Parts to be potted 3 Box for receiving potted parts 3a Box body 3b Bottom 3c Side 3d Potting material outflow hole 3e First ring-shaped protrusion 3f Second ring-shaped protrusion 3g Ring-shaped gap 3h Ring-shaped protrusion 3i Ring-shaped Frame 4 Potting material

Claims (5)

A method of adhering and fixing a cylindrical box containing a potted component such as an electrical connection terminal sealed with a potting material on a substrate made of glass or plastic, the cylindrical box having a bottomed cylindrical shape Forming an outflow hole in the bottom or side, inserting a potted component into the bottomed cylindrical box, pouring a liquid potting material into the box, and simultaneously supplying the liquid potting material into the outflow hole. The liquid potting material is interposed between the box and the substrate, and then the potting material is cured, and the parts are sealed with the potting material in the box. together bonded by the potting material without previously and wood previously temporarily fastened, the potting portion, characterized in that the fixed Adhesive fixing method to the substrate of the internal box. A method of adhering and fixing a cylindrical box containing a potted component such as an electrical connection terminal sealed with a potting material on a substrate made of glass or plastic, the cylindrical box having a bottomed cylindrical shape Forming a ring-shaped projection on the outer surface of the bottom portion, drilling an outflow hole in the bottom portion so as to communicate with the ring-shaped projection, and inserting a potted component into the bottomed cylindrical box, The liquid potting material is poured into the box, and the liquid potting material is allowed to flow out of the outflow hole at the same time, the liquid potting material is interposed between the box and the base material, and then the potting material is cured. , sealed with a potting material in the box the parts at the same time, the Pottin without that temporarily fixed in advance and the box and the base Adhesive fixing method to be potted component built box base, characterized in that mutually adhered and fixed by the wood.   The method according to claim 1 or 2, wherein the liquid potting material is a liquid silicone composition.   4. The method according to claim 3, wherein the liquid silicone composition is a deacetone type room temperature curable silicone rubber composition.   A box in which potted parts such as an electrical connection terminal sealed with a potting material are incorporated, and a first ring-shaped projection is provided on the outer surface of the bottom of the bottomed cylindrical box body, and the first ring shape A second ring-shaped protrusion is provided on the inside of the protrusion, and a plurality of liquid potting material outflow holes are formed in the bottom so as to communicate with the first ring-shaped protrusion between the two protrusions. Potting parts storage box.

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