JP6366027B1 - Bonding and fixing structure for door glass and glass holder for automobile and bonding fixing method - Google Patents

Abstract

An adhesive fixing structure and an adhesive fixing method for highly efficiently bonding an automotive door glass and a glass holder using a moisture-curable adhesive.
A glass holder 1 is filled with a moisture curable adhesive 20 (step S1). The glass holder filled with the moisture curable adhesive 20 is temporarily fixed to the lower side of the automobile door glass 2 (step S2). A part of the moisture curable adhesive overflows from at least a part of the outer periphery of the glass holder 1 (step S3). The cover 30 is attached to the outer periphery of the glass holder 1 (procedure S4), and superheated steam is sprayed into the cover 30 (procedure S5) to cure the moisture curable adhesive 20 overflowing from the glass holder 1. Thereby, the overflow part 21 hardened | cured in the exterior of the glass holder 1 is formed (procedure S6).
[Selection] Figure 7

Description

  The present invention relates to an adhesive fixing structure for an automotive door glass and a glass holder, and an adhesive fixing method.

  An automobile door glass (hereinafter referred to as a “door glass”) is connected to an electric or manual lifting device provided in the door, and is lifted and lowered by operating the lifting device. It has become. The connection between the door glass and the lifting device is performed by connecting the glass driving unit of the lifting device to a glass holder fixed to the lower side of the door glass. The glass holder is fixed to the door glass via an adhesive (see, for example, Patent Document 1).

  When the door glass and the glass holder are fixed via an adhesive, unlike the case where the door glass is fixed using a mechanical element such as a connecting pin, there is no need to perform processing such as opening a through hole in the door glass. The fixing operation of the glass holder to the glass can be facilitated, and the cost of the automobile door and thus the automobile can be reduced.

JP 2009-12504 A

  By the way, since the moisture curable adhesive is used in many parts in the assembly of automobiles, if the moisture curable adhesive is used for bonding the door glass and the glass holder, the manufacturing process and manufacturing equipment of the automobile are reduced. It can be simplified and is advantageous. In addition, since the moisture-curing adhesive has a low cure shrinkage, it can avoid cracking of the door glass that accompanies the attachment of the glass holder, and has moderate flexibility, so it absorbs vibrations associated with the running of the automobile. In this respect, it is possible to avoid cracking of the door glass.

  However, since the moisture curing type adhesive has a slow curing rate, the assembly efficiency of the door glass and the glass holder is lowered as compared with the case of using another adhesive having a fast curing rate. In addition, since the moisture-curing adhesive requires a long time for curing, if the door glass during the bonding operation is moved carelessly, the glass holder is likely to be displaced with respect to the door glass due to vibration.

  Then, an object of this invention is to raise the assembly efficiency of the door glass and glass holder using a moisture hardening type adhesive agent.

In order to solve the above problems, the present invention provides a first step of filling a glass holder with a moisture curable adhesive, and the glass holder filled with the moisture curable adhesive on the lower side of an automotive door glass. A second step of mounting and overflowing a part of the moisture curable adhesive filled in the glass holder from at least a part of the outer periphery of the glass holder; and the moisture curable mold overflowing from the outer periphery of the glass holder A third step of applying superheated steam to the adhesive to cure the moisture-curable adhesive overflowing from the outer periphery of the glass holder and the moisture-curable adhesive filled in the glass holder in this order ; includes, in the third step, the said glass holder in the heat of the superheated steam and heat-shrunk, by using the holding force of the glass holder generated during heat shrinkage, the Doagara automotive The glass holder, characterized in that to strengthen the temporary fixing force when temporarily fixed to.

The moisture curable adhesive has an isocyanate group as a reactive group at the end, and this reactive group reacts with moisture in the air to cause a crosslinking reaction and hardens, so the surface of the moisture curable adhesive layer Curing gradually proceeds from the inside toward the inside. On the other hand, in the door glass and glass holder bonding and fixing structure, moisture-curing adhesive is filled in a narrow space between the surface of the door glass and the inner surface of the glass holder. Limited to the outer periphery. For this reason, in the conventional fixing structure of the door glass and the glass holder, it takes a long time to completely cure the inside of the moisture curable adhesive. On the other hand, when the moisture curable adhesive overflows from at least a part of the outer periphery of the glass holder, the overflow portion is exposed to the outside of the glass holder, so that it can be quickly cured. When the overflow portion is cured, even when the entire moisture-curing adhesive is not completely cured, the initial adhesion function can be satisfied, and the door glass attached with the glass holder can be conveyed to the next process. As a result, it is possible to improve the assembly efficiency of the automobile door and thus the automobile and to prevent the glass holder from being displaced during the conveyance of the door glass. Superheated steam is high-temperature steam exceeding 100 ° C. When the superheated steam touches the moisture-curing adhesive, if the temperature of the moisture-curing adhesive is lower than that of the superheated steam, the water in the superheated steam condenses and increases on the surface of the moisture-curing adhesive. Of water. Thereby, the moisture curing type adhesive overflowing from the outer periphery of the glass holder is quickly cured. When the temperature of the moisture curable adhesive exceeds 100 ° C. from this state, water attached to the surface of the moisture curable adhesive evaporates, and the moisture curable adhesive becomes dry. Therefore, if superheated steam is used to cure the moisture curable adhesive, post-processing to remove water attached to the surface of the moisture curable adhesive can be omitted, simplifying the process of attaching the glass holder to the door glass it can. In addition, according to the above configuration, the glass holder is thermally contracted by the heat of the superheated steam, and the glass holder is temporarily fixed to the door glass for the automobile by using the sandwiching force of the glass holder generated at the time of the thermal contraction. The holder can be temporarily fixed securely. Therefore, it can positioning work of the glass holder for door glass to easily and reliably thing, it is a this to increase the assembly efficiency of the door glass and the glass holder.

Further, the present invention provides the adhesive fixing method having the above-described configuration, wherein the glass holder includes a bottom plate and two standing walls that are erected from two opposite sides of the bottom plate and arranged opposite to each other. The moisture-curing adhesive has overflowed over the entire length in the length direction of the upper side part from the upper side part of the two standing walls constituting the clamping part. Features.

  If a holding part consisting of a bottom plate and two standing walls is formed on the crow holder, the standing wall can be elastically deformed by the reaction force from the door glass when the glass holder is mounted on the lower side of the door glass. The glass holder can be temporarily fixed to the door glass by force. Therefore, the positioning operation of the glass holder with respect to the door glass can be easily and reliably performed, and the assembly efficiency of the door glass and the glass holder can be increased. Moreover, when the moisture-curing adhesive overflows from the upper sides of the two standing walls and forms an overflowing portion that extends over the entire length of the upper sides, sufficient adhesive strength necessary for the conveyance of the door glass is quickly obtained. As a result, the door glass can be quickly conveyed to the next step without causing a displacement of the glass holder.

According to the present invention, in the adhesive fixing method having the above-described configuration, the moisture-curable adhesive includes a heat-sensitive color former that develops color at a predetermined temperature.

  According to this configuration, since the heating state of the moisture curable adhesive in the overflow portion can be visually confirmed, it is easy to determine whether or not the moisture curable adhesive in the overflow portion is cured in a predetermined state. It can be done reliably. Therefore, insufficient curing of the overflow portion can be prevented and the defective product occurrence rate can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the assembly efficiency of the door glass and glass holder using a moisture hardening type adhesive agent can be improved.

It is a disassembled perspective view of the door glass, the glass holder, the raising / lowering apparatus, and the connection member which comprise the adhesion fixing structure which concerns on embodiment. It is a front view of the glass holder bonded and fixed to the door glass by the bonding and fixing structure according to the embodiment. It is a side view of the glass holder applied to the adhesion fixing structure which concerns on embodiment. It is a top view of the glass holder applied to the adhesion fixing structure which concerns on embodiment. It is a side view of a door glass and a glass holder that are bonded and fixed by the bonding and fixing structure according to the embodiment. It is sectional drawing which shows the adhesion fixing method of the door glass and glass holder using superheated steam. It is a flowchart which shows the adhesion fixing method which concerns on embodiment.

  Hereinafter, the door glass-glass holder adhesive fixing structure and the adhesive fixing method according to the embodiment will be described with reference to FIG. It should be noted that the scope of the present invention is not limited to the scope described in the embodiments described below, but includes those implemented by making various design changes without departing from the spirit of the present invention. Of course.

  As shown in FIGS. 1 to 5, the adhesive fixing structure according to the embodiment includes a glass holder 1, an automotive door glass 2 whose lower side is held by the glass holder 1, and the glass holder 1 as a door glass 2. A moisture-curing adhesive 20 to be bonded, a glass holder 1, a lifting device 3 that lifts and lowers the glass holder 1 and the door glass 2 integrally, and a glass holder 1 and the lifting device 3 are rotatably connected. And a connecting member 4.

  The glass holder 1 is comprised from the clamping part 11 of the door glass 2, and the connection part 12 of the raising / lowering apparatus 3, as shown in FIGS. The glass holder 1 is integrally formed using a plastic material. The plastic material for forming the glass holder 1 is not particularly limited as long as it has an appropriate strength. However, since the moldability is good and the durability is excellent, polybutylene terephthalate (PBT). It is particularly preferable to use engineering plastics such as acrylic butadiene styrene (ABS).

  The sandwiching portion 11 is formed in a U-shaped cross section having a bottom plate 13 and two standing walls 14 and 15 that are erected from two opposite sides of the bottom plate 13 and arranged opposite to each other. As shown in FIG. 3, the upright walls 14 and 15 are inclined inward so that the interval decreases from the lower side (bottom plate 13 side) to the upper side. Thereby, the glass holder 1 which concerns on this embodiment, when the window glass 2 for motor vehicles is inserted between the standing walls 14 and 15, the upper side side of the standing walls 14 and 15 elastically deforms outward, and the door is generated by the elastic force. Temporarily fixed to the glass 2. The inclination amount d on the upper side with respect to the lower side is adjusted to an appropriate size in consideration of the ease of attaching the glass holder 1 to the door glass 2 and the temporary fixing force.

  The door glass 2 includes various shapes that are provided in various doors of various automobiles. That is, the shape of the door glass 2 applicable to the adhesive fixing structure and the adhesive fixing method according to the embodiment is not particularly limited.

  As shown in FIGS. 1 and 4, the inner surfaces of the standing walls 14 and 15 have a plurality of strips extending vertically from the upper side to the lower side of the standing walls 14 and 15 (in the example of FIGS. 1 and 4, four strips). ) Of the glass surface abutting portion 16) is formed opposite to each other. These four glass surface contact portions 16 are formed at equal intervals and at the same height on the side end portions of the standing walls 14 and 15 and the intermediate portion thereof. Moreover, the glass edge contact part 17 connected to the lower end part of the two glass surface contact parts 16 arrange | positioned facing is formed in the side edge part of the standing walls 14 and 15. As shown in FIG. As shown in FIG. 1, the glass holder 1 is attached to the door glass 2 in a state where the glass end contact portion 17 is abutted against the lower side portion of the door glass 2.

  The connecting portion 12 is formed integrally with the lower surface of the bottom plate 13, and a through hole 12 a for connecting the lifting device 3 is formed at a substantially central portion.

  Moisture-curing adhesives are often used for assembling automobiles, and therefore, by using this for assembling the glass holder 1 and the door glass 2, it is possible to simplify the automobile manufacturing process and equipment. Specific examples of the moisture curable adhesive will be described later.

  As shown in FIG. 5, the moisture curable adhesive 20 is filled between the inner surface of the bottom plate 13 and the standing walls 14 and 15 of the glass holder 1 and the outer surface and lower end surface of the door glass 2, and is a moisture curable adhesive layer. Form. The thickness of the moisture curable adhesive layer is regulated by the protruding height of the glass end contact portion 17 from the bottom plate 13 and the protruding height of the glass surface contact portion 16 from the standing walls 14 and 15.

  As shown in FIGS. 2 and 5, the adhesive fixing structure and the adhesive fixing method according to the embodiment harden the moisture curable adhesive 20 overflowing from the upper sides of the two standing walls 14 and 15 constituting the glass holder 1. An overflow portion 21 is formed. The overflow portion 21 is formed over substantially the entire length of the upper side portions of the standing walls 14 and 15. Since the moisture curable adhesive 20 is cured from the surface, the moisture curable adhesive 20 overflowing from the upper sides of the standing walls 14 and 15 is earlier than the moisture curable adhesive 20 inside the glass holder 1. To harden. Therefore, by overflowing the moisture curable adhesive 20 from the upper sides of the standing walls 14 and 15, even before the moisture curable adhesive 20 inside the glass holder 1 is cured, the initial adhesion function can be satisfied, The door glass 2 to which the glass holder 1 is bonded can be transported, and the automobile door and thus the production efficiency of the automobile can be increased. The greater the amount of the moisture curable adhesive 20 overflowing from the upper sides of the standing walls 14 and 15, the higher the bonding strength can be. However, the larger the amount, the more the hindrance to raising and lowering the glass holder 1 and the door glass 2. Since it is easy, required adhesive strength is obtained, and it adjusts to such an extent that it does not have a bad influence on the raising / lowering operation | movement of the glass holder 1 and the door glass 2. FIG.

  In the adhesive fixing structure and the adhesive fixing method of the present example, the main overflow portion 21 is formed on the upper side portions of the two standing walls 14 and 15 constituting the glass holder 1, so that the right and left paths of the glass holder 1 and the door glass 2 are moved up and down. Even when the components of the automobile door are arranged, the raising and lowering operations of the glass holder 1 and the door glass 2 are not adversely affected. Of course, a small amount of exudation other than the upper side is allowed.

  As shown in FIG. 1, the lifting device 3 according to the embodiment includes a swivel portion in which a tip portion revolves in a direction indicated by an arrow A or a direction indicated by an arrow B around a rotation center (not shown). When the lifting device 3 is turned in the direction of arrow A, the glass holder 1 and the door glass 2 are raised in the direction of arrow C. When the elevating device 3 is turned in the direction of arrow B, the glass holder 1 and the door glass 2 are lowered in the direction of arrow D.

  A through hole 3a having substantially the same shape as the through hole 12a provided in the connecting part 12 of the glass holder 1 is provided at the tip of the swivel part. Further, as shown in FIG. 1, the connecting member 4 according to the embodiment is screwed into one bolt 4 a having a diameter that can penetrate the through hole 3 a and the through hole 12 a and a screw portion of the bolt 4 a 2. And two nuts 4b. The glass holder 1 and the lifting / lowering device 3 are rotatably connected by screwing a nut 4b into a screw portion of a bolt 4a that passes through the through hole 3a and the through hole 12a.

  In addition, the raising / lowering apparatus 4 and the connection member 5 which concern on embodiment are not limited to what is demonstrated by embodiment, The appropriate raising / lowering apparatus and connection member which belong to well-known can be utilized. Examples of suitable lifting devices and connecting members that are well known include the window regulator and carrier plate described in Patent Document 1.

  Next, the adhesion fixing method of the door glass 2 and the glass holder 1 which concerns on embodiment is demonstrated using FIG.6 and FIG.7.

  First, the moisture curable adhesive 20 is filled in a portion surrounded by the bottom plate 13 and the standing walls 14 and 15 of the glass holder 1 (step S1). The filling amount of the moisture curable adhesive 20 is adjusted in consideration of the size of the overflow portion 21.

  The moisture curable adhesive used in the present invention is not particularly limited as long as curing is accelerated by moisture. That is, in the present invention, known moisture curable adhesives such as acrylic, epoxy, urethane, silicone, and modified silicone can be used, which may be one-pack type or two-pack type. good. Among these, a one-component moisture-curing urethane moisture-curing adhesive is particularly preferable from the track record as a moisture-curing adhesive for automobiles.

  One-part moisture-curing urethane moisture-curing adhesive is a urethane prepolymer having an isocyanate group at the terminal, and the polymer is crosslinked and cured to form a polymer while the isocyanate group part forms a urethane bond in the presence of water. It is a compound and is a reaction product of a polyhydroxyl compound and a polyisocyanate compound.

  The urethane prepolymer having an isocyanate group at the terminal used in the present invention is not particularly limited as long as it is generally used for a one-pack type urethane composition. Examples of the polyhydroxyl compound that is one of the raw materials for producing the urethane prepolymer include various polyether polyols, polyester polyols, or polymer polyols that are generally used for the production of urethane compounds.

  The polyether polyol is a product obtained by addition polymerization of one or more alkylene oxides such as ethylene oxide, propylene oxide, butylene oxide, and tetrahydrofuran to a compound having two or more active hydrogens. Here, examples of the compound having two or more active hydrogens include polyhydric alcohols, amines, alkanolamines, and polyhydric phenols. Examples of the polyhydric alcohols include ethylene glycol, propylene glycol, butanediol, diethylene glycol, glycerin, hexanetriol, trimethylolpropane, and pentaerythritol. Examples of amines include ethylene diamine and hexamethylene diamine. Examples of alkanolamines include ethanolamine and propanolamine. Examples of polyhydric phenols include resorcin and bisphenols.

  Polyester polyol is a polyhydric alcohol and polybasic carboxylic acid condensate, a polyhydric alcohol and hydroxycarboxylic acid condensate, a lactone polymer, and the like. And the compounds exemplified above in the section of polyether polyol. Examples of the polybasic carboxylic acid include adipic acid, glutaric acid, azelaic acid, fumaric acid, maleic acid, phthalic acid, terephthalic acid, dimer acid, and pyromellitic acid. Furthermore, castor oil, a reaction product of castor oil and ethylene glycol, and a reaction product of castor oil and propylene glycol are also effective as the condensate of polyhydric alcohol and hydroxycarboxylic acid. The lactone polymer is a product obtained by ring-opening polymerization of ε-caprolactam, α-methyl-ε-caprolactam, ε-methyl-ε-caprolactam, or the like with an appropriate polymerization initiator. The polymer polyol is, for example, one obtained by graft polymerization of an ethylenically unsaturated compound such as acrylonitrile, styrene, or methyl (meth) acrylate on the polyether polyol or polyester polyol, 1,2-polybutanediol, or 1, 4-polybutanediol or a hydrogenated product thereof. These hydroxyl compounds include those described above and may be used alone or in combination of two or more. However, the weight average molecular weight is preferably about 100 to 10,000, more preferably about 500 to 5,000.

  As the polyisocyanate compound which is the other raw material of the urethane polymer, there are various compounds used in the production of ordinary polyurethane resins. Specifically, 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate, phenylene diisocyanate, xylene diisocyanate, diphenylmethane-4,4-diisocyanate, naphthylene-1,5-diisocyanate, And compounds obtained by adding hydrogen to these, ethylene diisocyanate, propylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, 1-diisocyanate cyclohexane, 1-methyl-2,6 -Diisocyanate cyclohexane, dicyclohexylmethane diisocyanate, triphenylmethane triisocyanate and the like. These polyisocyanate compounds may be used alone or in combination of two or more.

  The amount ratio of the polyhydroxyl compound and the polyisocyanate compound in the production of the urethane prepolymer having an isocyanate group at the terminal is such that the number of hydroxyl groups in the polyhydroxyl compound is 1 or less per isocyanate group in the polyisocyanate compound. The ratio is preferably 0.95 to 0.75. The production conditions for the urethane polymer may be the usual production conditions for the urethane polymer. That is, the above hydroxyl compound and polyisocyanate compound may be reacted at a reaction temperature of about 50 to 100 ° C. under normal pressure.

  The polyurethane composition of the present invention may contain a filler, a plasticizer, an antioxidant, a pigment, a silane coupling agent, a dispersant, a solvent and the like.

  Examples of the filler include calcium carbonate and silica. Calcium carbonate is broadly divided into heavy calcium carbonate and precipitated calcium carbonate. Precipitated by treating the surface with a fatty acid ester to prevent the reaction between isocyanate groups and moisture and improve storage stability. Of these, calcium carbonate is preferable.

  The fatty acid ester that performs the surface treatment of calcium carbonate is not limited to both the fatty acid and the ester constituting the fatty acid ester. For example, stearic acid stearate, stearic acid laurate, palmitic acid stearate, palmitic acid laurate. An ester obtained from a monohydric alcohol is also effective. The amount of the fatty acid ester used for the surface treatment is not particularly limited, but is preferably increased or decreased depending on the particle size of the calcium carbonate. Generally, about 1 to 20% of the calcium carbonate weight is used.

  The amount of precipitated calcium carbonate surface-treated with the above fatty acid ester is preferably 50 to 150 parts by weight with respect to 100 parts by weight of the urethane polymer.

  Silica has a hydrophilic grade and a hydrophobic grade, and any grade may be used.

  Examples of the plasticizer include dioctyl fullerate (DOP), dibutyl fullerate (DBP), diuryl phthalate (DLP), dibutyl benzyl phthalate (BBP), dioctyl adipate, trioctyl phosphate, tris (chloroethyl) phosphate, Examples thereof include tris (dichloropropyl) phosphate, propylene glycol adipate polyester, butylene glycol adipate polyester, alkyl stearate, and epoxidized soybean oil, which can be used alone or in combination.

  Antioxidants refer to organic compounds that have the property of preventing or suppressing the action of oxygen under various conditions such as light and heat against various auto-oxidizing substances. As a radical chain inhibitor, butylhydroxytoluene (BHT) is used. ), Phenol derivatives such as butylhydroxyanisole (BHA), aromatic amines such as diphenylamine and phenylenediamine, and phosphites such as triphenyl phosphite.

  There are inorganic pigments and organic pigments, and inorganic pigments include carbon oxides such as carbon black, titanium oxide, zinc oxide, ultramarine, and bengara, sulfur substances such as rotopon, lead, cadmium, iron, cobalt, and aluminum. , Hydrochloride and sulfuric acid cylinders. Examples of organic pigments include azo pigments and copper phthalocyanine pigments.

As the silane coupling agent, generally, organic silicon represented by the following formula having a functional group capable of chemically bonding an inorganic material such as glass, silica, metal, viscosity, etc., which are not familiar to each other, and an organic material such as a polymer. Refers to a compound.
Y~CH ₂ SiX ₃
(X in the formula is a hydrolyzable substituent such as an alkoxy group, acetyloxy group, isoprepoxy group, amino group, halogen, etc., which reacts with inorganic matter. Y in the formula is a vinyl group that easily reacts with organic matter, (Epoxy group, amino group, methacryl group, mercapto group, etc.)

  The dispersant refers to a substance in which a solid is made into fine particles and dispersed in a liquid, and examples thereof include sodium hexametaphosphate, condensed sodium naphthalene sulfonate, and a surfactant.

  The composition of the present invention may use a solvent, preferably an aromatic hydrocarbon solvent. The aromatic hydrocarbon solvent means xylene, toluene and the like.

  Such urethane compositions are commercially available from Yokohama Rubber Co., Ltd. under the trade names Hamatite WS-95, WS-292, Henkel's Terostat-8899, Dow Chemical Co., Essex U-400HV, U-414. In particular, silane compound-containing hamatite WS-292 and Essex U-414 that are effective for bonding to glass are particularly effective.

  Returning to FIG. 7, the glass holder 1 filled with the moisture curable adhesive 20 is temporarily fixed to the lower side portion of the door glass 2 (step S2). Temporary fixing of the glass holder 1 to the door glass 2 is performed by inserting the door glass 2 between the standing walls 14 and 15 of the glass holder 1, and the glass edge contact portion 17 formed on the glass holder 1 at the lower side of the door glass 2. It is performed by making it contact | abut. If it does in this way, when inserting the door glass 2 between the standing walls 14 and 15, the standing walls 14 and 15 will elastically deform and the standing walls 14 and 15 will be pressed by the outer surface of the door glass 2 by the elastic force, so glass The holder 1 is temporarily fixed to the lower side of the door glass 2 stably. Therefore, since the glass holder 1 is stably held with respect to the door glass 2 until the moisture curable adhesive 20 is cured, the glass holder 1 can be attached to a predetermined position of the door glass 2.

  When the door glass 2 is inserted between the standing walls 14 and 15 filled with the moisture curable adhesive 20, the moisture curable adhesive filled between the standing walls 14 and 15 is applied to the glass surface by the insertion force. It is guided by the contact part 16 and overflows outside from the upper side part of the standing walls 14 and 15 (step S3). At this time, since the glass surface contact portion 16 and the glass end contact portion 17 are formed at the side end portions of the standing walls 14 and 15, the moisture-curing adhesive 20 from the side end portions of the standing walls 14 and 15. Overflow is prevented.

  Next, as shown in FIG. 6, the cover 30 is mounted around the glass holder 1 temporarily fixed to the door glass 2 (step S4). The cover 30 is provided with a superheated steam inlet 30a. After that, the overflow portion 21 formed by injecting superheated steam into the cover 30 from the introduction port 30a (step S5) and curing the moisture curable adhesive 20 overflowing from the upper side portions of the standing walls 14 and 15 to the outside. Form (step S6).

  When the superheated steam 31 touches the moisture curable adhesive 20, if the temperature of the moisture curable adhesive 20 is lower than that of the superheated steam 31, the moisture in the superheated steam 31 condenses to form a moisture curable adhesive. A lot of water adheres to the surface of the agent 20. As a result, the moisture curable adhesive 20 overflowing from the outer periphery of the glass holder 1 is quickly cured. When the temperature of the moisture curable adhesive 20 exceeds 100 ° C. from this state, water attached to the surface of the moisture curable adhesive 20 evaporates, and the moisture curable adhesive becomes dry. Therefore, when the superheated steam 31 is used for curing the moisture curable adhesive 20, the post-treatment for removing water adhering to the surface of the moisture curable adhesive 20 can be omitted. The mounting process can be simplified. Further, when the periphery of the glass holder 1 is covered with the cover 30, the consumption of the superheated steam 31 can be saved as compared with the case where the superheated steam 31 is supplied to the front surface of the door glass 2, so that the glass holder 1 and the door glass 2 are assembled. Cost can be suppressed. Moreover, since the plastic glass holder 1 is rapidly superheated by jetting the superheated steam 31, the upper sides of the standing walls 14 and 15 are shrunk inward by the heat shrinking action, and the standing walls 14 and 15 become doors. The glass 2 is firmly clamped. Therefore, the temporary fixing force of the glass holder 1 with respect to the door glass 2 is further strengthened.

  Finally, the cover 30 is removed and the operation is completed (step S7). If there are a plurality of temporarily fixed glass holders 1, the operations from step S 1 to step S 7 are repeated.

  In the above embodiment, the moisture-curing adhesive 20 overflows only from the upper sides of the standing walls 14 and 15 constituting the glass holder 1, but some moisture-curing adhesive is applied from the side end portions of the standing walls 14 and 15. The agent 20 may overflow. In addition, a heat-sensitive color former that develops color at a predetermined temperature can be added to the moisture curable adhesive 20. If the heat-sensitive color former is added to the moisture curable adhesive 20, the heating state of the moisture curable adhesive in the overflow portion can be visually confirmed, so that the moisture curable adhesive is cured in the overflow portion in a predetermined state. It is possible to easily and surely determine whether or not it is performed in the above. Therefore, insufficient curing of the overflow portion can be prevented and the defective product occurrence rate can be reduced.

  DESCRIPTION OF SYMBOLS 1 ... Glass holder, 2 ... Automotive door glass (door glass), 3 ... Elevating device, 3a ... Through-hole, 4 ... Connection member, 4a ... Bolt, 4b ... Nut, 11 ... Holding part, 12 ... Connection part, 12a DESCRIPTION OF SYMBOLS ... Through-hole, 13 ... Bottom plate, 14, 15 ... Standing wall, 16 ... Glass surface contact part, 17 ... Glass end contact part, 20 ... Moisture hardening type adhesive, 21 ... Overflow part, 30 ... Cover, 31 ... Overheating water vapor

Claims (3)

A first step of filling the glass holder with a moisture curable adhesive;
The glass holder filled with the moisture curable adhesive is attached to a lower side portion of an automotive door glass, and the moisture curable adhesive filled in the glass holder from at least a part of the outer periphery of the glass holder. A second step of overflowing the part;
Applying superheated steam to the moisture curable adhesive overflowed from the outer periphery of the glass holder, and the moisture curing filled in the interior of the glass holder and the moisture curable adhesive overflowed from the outer periphery of the glass holder A third step of curing the mold adhesive in this order ,
In the third step, the glass holder is thermally contracted by the heat of the superheated steam, and when the glass holder is temporarily fixed to the automobile door glass by using the holding force of the glass holder generated at the time of the thermal contraction A method for bonding and fixing an automotive door glass and a glass holder, wherein the temporary fixing force is increased . The glass holder has a U-shaped sandwiching section composed of a bottom plate and two standing walls that are erected from two opposite sides of the bottom plate and arranged opposite to each other,
The said moisture hardening type adhesive agent is overflowing over the full length of the length direction of the said upper side part from the upper side part of the said 2 standing wall which comprises the said clamping part, respectively. Bonding method for automotive door glass and glass holder. The automotive door glass and glass holder according to any one of claims 1 and 2, wherein the moisture-curable adhesive includes a heat-sensitive color former that develops color at a predetermined temperature. Adhesive fixing method .

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