JP4698058B2 - How to install a car rearview mirror on the windshield - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for attaching an article using an adhesive made of a thermosetting resin, and more particularly to a method for attaching an automobile rearview mirror to a windshield.
[0002]
[Prior art]
Adhesives are used in a wide range of industrial manufacturing processes. For example, an automobile rearview mirror has been conventionally attached to a roof structural member with a screw, but this installation operation has to be performed from the bottom to the top. A method of dividing a mirror into a main body including a mirror surface and a mirror base to which the main body is detachably attached and attaching the mirror base to a single windshield using an adhesive is beginning to be adopted.
[0003]
Here, the rear mirror is indispensable for driving and requires high adhesive strength so that it can be securely attached. Therefore, when an adhesive is used as described above, a thermosetting resin is used as the adhesive, and high adhesive strength is obtained by applying heat to cure the resin.
[0004]
[Problems to be solved by the invention]
However, here, the area of the mirror base is at most several cm square, and even though the area of the thermosetting resin used is also at most several cm square, it is large in order to heat the thermosetting resin. The entire windshield (about 1.5 m × 1 m) is placed in an oven and heated, requiring a large-scale facility, and is very wasteful of energy.
[0005]
In view of the above problems, an object of the present invention is to provide a method for easily attaching a room mirror to a windshield with an adhesive without waste.
[0006]
[Means for Solving the Problems]
According to the invention of claim 1, it is a method of attaching a rear mirror of a car to a windshield,
The room mirror is composed of a main body including a mirror surface and a mirror base to which the main body can be detachably attached.
A mirror base attaching step for attaching the mirror base to the windshield with a double-sided tape-like adhesive;
Comprises a main body mounting step of mounting the body portion on the mirror base,
The adhesive comprises a non-conductive acrylic epoxy resin;
The mirror base attaching step includes
And attaching an electrode to each of the mirror base and the front glass sandwiching the adhesive,
While heating by a heating means that does not depend the adhesive to a high-frequency dielectric heating, high frequency dielectric heating by applying a high frequency voltage the adhesive between the electrodes, including, an adhesive heating step,
A method characterized by this is provided.
According to such a method, the room mirror is made by attaching the main body to the mirror base attached to the glass with an adhesive, but the adhesive is heated by a heating means not based on the high frequency dielectric heating and is also heated by the high frequency dielectric. Cure time is short.
[0007]
According to the invention of claim 2, in the invention of claim 1, wherein the high-frequency dielectric does not depend on heating the heating means is a heater connected to the electrodes attached to the mirror base, a method is provided.
According to such a method , the adhesive is thermally cured by a heater attached to the mirror base electrode in addition to the high frequency.
[0008]
According to the invention of claim 3, in the invention of claim 1, temperature detection means for detecting the temperature of the adhesive is provided, and the temperature of the adhesive is monitored by the temperature detection means during the adhesive heating step. A method is provided .
According to the invention of claim 4, in the invention of claim 1, the adhesive is made into a double-sided tape, and the step of attaching the double-sided tape-like adhesive to the mirror base in advance prior to the mirror base attaching step. A method is provided.
According to the invention of claim 5, in the invention of claim 1, a method is provided in which the high-frequency voltage has a frequency of 4 to 80 MHz.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a mirror base 110 of a rearview mirror attached to an inner surface 11 of a car windshield 10 in a single state before being mounted on a car body with a double-sided tape 20 made of a thermosetting acrylic epoxy resin. 2 shows a state in which the double-sided tape 20 is selectively thermally cured by high-frequency dielectric heating.
[0010]
As shown in the figure, the windshield 10 is placed on the support base 5 with the mirror base 110 attached by the double-sided tape 20 with the inner surface 11 facing upward.
The first electrode 30 is pressed against the outer surface 12 of the windshield 10 on the back side of the double-sided tape 20 from below by an appropriate method (not shown) such as a spring.
On the other hand, the second electrode 40 is pressed against the non-front glass side of the mirror base 110 from above by an appropriate method (not shown), for example, with a spring.
[0011]
The first electrode 30 and the second electrode 40 are each connected to a high-frequency power source 60 so that a voltage can be applied between them. A thermocouple 70 for temperature detection is embedded in the second electrode 40, and a heater 60 is attached to the second electrode side. The thermocouple 70 is connected to a thermometer 75.
[0012]
After the above, the switch 61 of the high frequency power supply 60 is turned on to generate high frequency dielectric in the acrylic epoxy resin of the double-sided tape 20, and the switch 51 of the heater 50 is also turned on. Then, the acrylic epoxy resin is heated and cured by self-heating due to high frequency dielectric and heat transfer from the heater 50.
During this time, the thermometer 75 monitors the temperature in the second electrode 40 substantially equal to the temperature of the double-sided tape 20, and adjusts the heating amount to the double-sided tape 20 to be appropriate.
[0013]
For example, in the case where the area of the double-sided tape 21 is about 8 cm ² , when a high frequency voltage of 4 to 80 MHz is applied and the set temperature of the heater 50 is 140 ° C., the conventional glass is heated in just over 1 minute. In some cases, it can be cured in the same manner as obtained at 140 ° C. over 25 minutes, and the working time can be significantly shortened. Moreover, since only the part of the double-sided tape 20 is selectively heated, there is no waste.
[0014]
In addition, high-frequency dielectric heating is performed when intense motion occurs due to the change in polarity of the high-frequency electric field between molecules, and frictional heat (dielectric loss due to resistance of intermolecular bonding force becomes heat) is generated. As is well known, the amount of heat obtained by the object (double-sided tape in the present embodiment) is proportional to the frequency and the dielectric constant.
[0015]
FIG. 2 shows the rearview mirror main body 120 attached to the mirror base 110 securely attached to the windshield 10 (not shown) as described above. The rearview mirror main body 120 is the mirror base 110. The engagement support part 130 is formed so as to be engaged with the stay support part, the stay 140 is attached to the engagement support part, and the mirror part 150 is rotatably attached to the stay 140.
FIG. 3 is a perspective view of the vehicle showing the mounting position of the rearview mirror 100 in which the rearview mirror main body 120 is attached to the mirror base 110.
[0016]
The present invention is a method of attaching a rear mirror of an automobile to a windshield, but can also be applied to a case where a glass part such as a glass clip, a glass grip, or a glass holder is bonded to a metal part or a resin part.
[0017]
【The invention's effect】
The present invention relates to a method for attaching a rear mirror of an automobile to a windshield. The rear mirror includes a main body including a mirror surface and a mirror base to which the main body can be detachably attached. a mirror base attached attaching the windshield with double-sided tape-like adhesive includes a main body mounting step of mounting the body portion on the mirror base, wherein the adhesive comprises a non-conductive acrylic epoxy resin the mirror base mounting step, and attaching an electrode to each of the mirror base and the front glass sandwiching the adhesive, the adhesive as well as heated by the heating means that does not depend on the high-frequency dielectric heating, between the electrodes high frequency dielectric heating of the adhesive by applying a high frequency voltage, the adhesive heating step , It is intended to include.
By using a double-sided tape-like adhesive, it has adhesiveness even before heating, so the room mirror can be temporarily fixed to the windshield, and it is easy to attach the electrodes required when performing high-frequency heating. Since it is easy to set the thickness and area, the high-frequency dielectric heating can be easily adjusted.
In addition, the adhesive can be heated by a heating means that does not rely on high frequency dielectric heating, and a high frequency voltage can be applied between both electrodes to heat the adhesive at high frequency dielectric heating, thereby shortening the curing time of the adhesive.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an apparatus used in the present invention.
FIG. 2 is a view showing a rearview mirror main body 120 attached to the mirror base 110. FIG.
FIG. 3 is a perspective view of a vehicle showing a mounting position of a rearview mirror 100 in which a rearview mirror main body 120 is attached to a mirror base 110. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 5 ... Support stand 10 ... Windshield 20 ... Double-sided tape 30 ... 1st electrode 40 ... 2nd electrode 50 ... Heater 60 ... High frequency power supply 70 ... Thermocouple 75 ... Thermometer 100 ... Room mirror 110 ... Mirror base 120 ... Mirror main-body part

Claims (5)

A method of attaching an automobile rearview mirror to a windshield,
The room mirror is composed of a main body including a mirror surface and a mirror base to which the main body can be detachably attached.
A mirror base attaching step for attaching the mirror base to the windshield with a double-sided tape-like adhesive;
Comprises a main body mounting step of mounting the body portion on the mirror base,
The adhesive comprises a non-conductive acrylic epoxy resin;
The mirror base attaching step includes
And attaching an electrode to each of the mirror base and the front glass sandwiching the adhesive,
While heating by a heating means that does not depend the adhesive to a high-frequency dielectric heating, high frequency dielectric heating by applying a high frequency voltage the adhesive between the electrodes, including, an adhesive heating step,
A method characterized by that. The method of claim 1, wherein the high-frequency dielectric does not depend on heating the heating means is a heater connected to the electrodes attached to the mirror base, characterized in that. The method of claim 1, wherein comprising a temperature detecting means for detecting the temperature of the adhesive, between the adhesive heating step, monitoring the temperature of the adhesive by the temperature detection means, characterized in that. The method of claim 1, wherein the double-sided tape-like adhesive, prior to the said mirror base mounting step, advance including install them steps to the mirror base, characterized in that. The method of claim 1, wherein the high frequency voltage has a frequency of 4 to 80 MHz.

Images