JP5364622B2 - VEHICLE PACKING AND VEHICLE PARTS FIXING METHOD AND FIXING STRUCTURE USING THE SAME - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and structure, capable of more easily and reliably performing an antirust treatment than ever before, and to provide an effective packing that achieves the above, concerning the structure of fixing a component by a bolting to a body panel of a vehicle. <P>SOLUTION: The packing 1 for the vehicle lies between the body panel and the component when the component is fixed by the bolting to the body panel of the vehicle. The packing consists of: a packing body 10 which is formed of a plate-like body having through-holes 11 and 12, the through-holes penetrating bolts; and an antirust seal member 15 which is arranged around an outer end face of the packing body 10. The antirust seal member 15 includes a foamable material which foams and expands by heating upon bake hardening of the body panel. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a packing interposed between the body panel and the component when the component is fixed to the body panel of the vehicle by bolting, and a fixing method and a fixing structure using the packing.

For example, when a door or the like of a vehicle such as an automobile is fixed to a body panel so as to be rotatable, a structure in which a hinge part is disposed between them is employed.
The hinge component is usually composed of two connecting pieces that are engaged with a shaft body serving as a rotating shaft so as to be relatively rotatable. And by fixing each connection piece to a door and a body panel, respectively, both can be connected so that rotation is possible. In this case, the connecting piece of the hinge part and the body panel are fixed by tightening with a bolt (see Patent Document 1).

  When the connecting piece of the hinge and the body panel are fastened and fixed with bolts, a packing is interposed between them in order to prevent loosening and to prevent rainwater from entering from the bolt holes. The packing to be used is generally made of a plate-like body having an appropriate hardness and has a through hole through which a bolt passes.

  By the way, the vehicle body panel and the like are coated with both an improvement in appearance characteristics and rust prevention in a state where a door and the like are assembled. However, in a narrow gap such as between the body panel and the connecting piece of the hinge, the paint is not sufficiently supplied, and a portion where the metal material is exposed as it is unpainted easily remains. If this unpainted part is left as it is, it will be difficult to prevent rusting of this part. For this reason, measures such as applying a rust preventive sealer after application is complete, applying spray wax, or placing a pre-formed sealing material before application have been taken. .

Japanese Patent Laid-Open No. 62-160383

However, since the bolt fixing part is a part that is difficult to paint in shape, it is not easy to apply sealer or spray wax after painting. Therefore, there are cases where the unpainted portion cannot always be reliably covered with a sealer or wax. In addition, the molded sealing material is put on the bolt fixing part before painting, and the sealing material is melted and deformed by heat at the time of coating baking. Sometimes it doesn't cover.
Such a problem may occur not only in the hinge fixing portion but also in a structural portion that fixes a part by bolting to a body panel in a vehicle.

  The present invention has been made in view of such problems, and in a structure for fixing parts by bolting to a body panel in a vehicle, a method capable of performing rust prevention treatment more easily and reliably than in the past, and It is an object of the present invention to provide a structure and an effective packing for realizing the structure.

A first invention is a vehicular packing that is interposed between the body panel and the component when the component is fixed to the body panel in the vehicle by bolting.
A packing main body made of a plate-like body having a through-hole for penetrating the bolt;
It consists of a rust preventive seal member arranged around the outer peripheral end face of the packing body part,
The rust preventive seal member is a vehicular packing characterized in that it is made of a foamable material that foams and expands by heating during the paint baking process of the body panel.

A second invention is a fixing method for fixing parts by bolting to a body panel in a vehicle,
The vehicle packing of the first invention is interposed between the body panel and the component, and a bolt is passed through the through hole of the packing main body and fixed by tightening.
Thereafter, a paint baking process of the body panel is performed to form a coating film on the surfaces of the body panel and the parts, and the rust preventive seal member is expanded by foaming by heating during the paint baking process. The vehicle component fixing method is characterized in that an end portion of the coating film facing the fixing portion with the component is covered with the anticorrosive seal member (claim 4).

The third invention is a fixing structure formed by fixing parts by bolting to a body panel in a vehicle,
The said packing main-body part of the packing for vehicles of any one of Claims 1-3 is interposed between the said body panel and the said components, and a volt | bolt penetrates the said through-hole of the said packing main-body part. And
The body panel has a coating film formed on the surface of the body panel and the parts by the paint baking process of the body panel, and the rust preventive seal member is expanded and expanded by heating during the paint baking process. The vehicle component fixing structure covers an end portion of the coating film facing a fixing portion between the vehicle component and the component (Claim 5).

  As described above, the vehicular packing according to the first invention includes the packing main body portion having the same function as the conventional packing, and the rust preventive seal member disposed around the outer peripheral end surface of the packing main body portion. And this rust prevention seal member is comprised with the foamable material which expands and expands by the heating at the time of the paint baking process of a body panel. Therefore, if the fixing method of the second invention is performed using the vehicle packing of the first invention, the bolt fastening and fixing structure excellent in rust prevention of the third invention can be easily obtained.

  That is, the vehicle packing is interposed between the body panel and the parts, and the bolts are passed through the through holes of the packing main body of the vehicle packing and fastened. That is, it is possible to obtain the functions of preventing loosening and preventing rainwater from entering from the bolt holes.

  Furthermore, the packing for vehicles of this invention has the said rust prevention seal member around the said packing main-body part. And this antirust seal member is comprised from the foamable material. Therefore, when the paint baking process of the body panel is performed with the vehicle packing interposed between the body panel and the part, the rust preventive seal member is heated and foamed and expanded.

On the other hand, the coating film formed by painting the body panel is easily formed at least up to the surface of the body panel and the part and the periphery of the part where they face each other, but it is applied to the gap part where both face each other. It is difficult to form a film, and unpainted parts are likely to remain.
Here, in the present invention, since the anticorrosive seal member expands and expands as described above, the foamed anticorrosive seal member covers an unpainted portion around it, and a fixing portion between the body panel and the part It reaches the end of the coating film facing the surface and covers it. Thereby, it can prevent that an unpainted part remains exposed and can improve a rust prevention effect.

  In this way, with the vehicular packing of the present invention, the rust preventive seal member that expands and expands the unpainted portion during the subsequent paint baking process, just by performing the same work as before between the parts and the body panel. Can be covered. Therefore, a structure that can exhibit an excellent rust prevention effect can be easily obtained.

FIG. 2 is a plan view showing the vehicular packing in the first embodiment. Sectional drawing of the packing for vehicles in Example 1 (AA arrow sectional drawing of FIG. 1). Explanatory drawing of the fixation structure of the vehicle components in Example 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of a vehicle component fixing structure according to a first embodiment when viewed from the front; Explanatory drawing which shows the state before the coating of the cross section of the outer periphery vicinity of the site | part in which the body panel, the packing for vehicles, and the 2nd connection piece of hinge components in Example 1 were laminated | stacked. Explanatory drawing which shows the state before baking baking after the coating-film formation of the site | part in which the body panel, the packing for vehicles, and the 2nd connection piece of hinge components in Example 1 were laminated | stacked. Explanatory drawing which shows the state after the baking heating start of the site | part in which the body panel, the packing for vehicles, and the 2nd connection piece of the hinge components in Example 1 were laminated | stacked. (A) The top view which shows the packing main-body part of the packing for vehicles in Example 2, (b) The top view which shows a rust prevention seal member. The top view which shows the packing for vehicles in Example 3. FIG.

  The vehicular packing according to the present invention includes the packing main body and a rust-proof seal member. As said packing main-body part, the thing similar to the packing conventionally used for the bolt fastening part is applicable. For example, there is an inorganic fiber or aramid fiber that does not contain asbestos, an inorganic filler added, and a binder molded with an oil-resistant synthetic rubber.

The outer peripheral shape of the packing body is preferably smaller than the area of the facing portion between the component and the body panel. When the packing main body portion protrudes outward from the facing portion between the component and the body panel, it is difficult to sufficiently obtain the effect of the anticorrosive seal member due to foam expansion.
Moreover, the said packing main-body part does not necessarily need to be comprised only with 1 sheet, You may combine a several thing. For example, when two through holes for penetrating bolts are required, the packing main body portion may be constituted by two portions each having one through hole.

The rust preventive seal member is made of a foamable material as described above. Various known materials can be applied as the foamable material. For example, a synthetic rubber and / or thermoplastic resin may be used as a main component, and a chemical foaming agent may be contained therein.
Examples of the synthetic rubber include butadiene rubber, isoprene rubber, styrene / butadiene rubber, and acrylonitrile / butadiene rubber.
Examples of the thermoplastic resin include polyethylene, ethylene / propylene copolymer, ethylene / propylene / diene copolymer, ethylene / vinyl acetate, ethylene / ethyl acrylate, ethylene / methyl methacrylate, styrene / butadiene block copolymer, styrene / ethylene / butadiene / Examples include styrene block copolymers and styrene / ethylene / propylene / styrene block copolymers.
Examples of the chemical foaming agent include azodicarbonamide, N, N′-dinitrosopentamethylenetetramine, 4,4′-oxybisbenzenesulfonylhydrazide, and the like.

Moreover, it is preferable to contain a crosslinking agent and a filler in the said rust preventive seal member. Thereby, the intensity | strength of the antirust seal member after foaming expansion can be improved.
Examples of the crosslinking agent include dialkyl peroxides, peroxy esters, peroxy ketals, and the like.
Examples of the filler include inorganic fillers such as calcium carbonate, talc, mica, and quicklime.

  Moreover, since the heating temperature of the coating baking process is approximately 150 ° C. to 210 ° C., it is necessary to set the temperature at which the anticorrosive seal member starts to foam within this heating temperature range. This adjustment can be performed by selecting a foaming agent.

  Moreover, the said vehicle packing does not necessarily need to be integrated, if the structure which arrange | positions the said rust prevention seal member in the outer peripheral end surface of the said packing main-body part is taken. However, when the rust preventive seal member expands and expands, the rust preventive seal member needs to be disposed in an appropriate position in advance so as to always cover the entire outer peripheral surface of the packing main body.

  In order to easily make the positional relationship between the packing main body portion and the rust-proof seal member to be in an optimum state, the rust-proof seal member is joined to the outer peripheral end surface of the packing main body portion and integrated with the packing main body. (Claim 2). In this case, the rust preventive effect due to the expansion of the rust preventive seal member can be obtained more reliably, and the handling of the vehicular packing becomes very easy, and can be assembled in exactly the same operation as the conventional packing.

  Further, it is preferable that the component is a hinge component for fixing the flip-up back door. That is, the hinge part for fixing the flip-up back door is arranged with the rotation axis direction facing the horizontal direction. Therefore, when it comes into contact with rainwater, water tends to accumulate between the facing parts of the hinge part and the body panel, and rust is likely to occur. Therefore, it is very effective to apply the fixing structure using the vehicular packing of the present invention to the fixing structure of the hinge part for fixing the flip-up back door and the body panel.

Example 1
A vehicle packing according to an embodiment of the present invention and a vehicle component fixing method and structure using the same will be described with reference to FIGS.
The vehicle packing 1 of this example is a packing interposed between the body panel 8 and the component 7 when the component 7 is fixed to the body panel 8 in the vehicle by bolting. The part 7 of this example is a hinge part for fixing a flip-up back door (not shown).

  As shown in FIG. 3, the hinge part 7 is composed of two connecting pieces (a first connecting piece 71 and a second connecting piece 72) that are engaged with a shaft body 70 that is a rotating shaft so as to be relatively rotatable. The The first connecting piece 71 is fixed to the door, and the second connecting piece 72 is fixed to the body panel 8.

This example is an example in which the bolting fixing portion between the second connecting piece 72 of the hinge part 7 and the body panel 8 is applied.
As shown in FIG. 3, the second connecting piece 72 is provided with component through holes 721 and 722 for allowing two bolts 5 (FIG. 4) to pass therethrough, and the body panel 8 also corresponds to these. Body through holes 81 and 82 are provided at the positions.

As shown in FIGS. 1 to 3, the packing 1 of this example is disposed around a packing main body portion 10 made of a plate-like body having through holes 11 and 12 through which the bolts 5 pass, and an outer peripheral end face of the packing main body portion 10. The rust preventive seal member 15 is formed. The through holes 11 and 12 are provided at positions facing the component through holes 721 and 722 and the body through holes 81 and 82 described above.
The packing main body 10 has two through holes 11 and 12 in the center, and the outer shape is a single rectangular plate. The material used was an aramid fiber added with an inorganic filler and a binder molded with oil-resistant synthetic rubber.

  The rust preventive seal member 15 is disposed on the entire circumference of the outer peripheral end surface of the packing main body 10 and is joined and integrated with the outer peripheral end surface of the packing main body 10. Specifically, the material of the rust preventive seal member 15 is filled with 4,4′-oxybisbenzenesulfonylhydrazide as a chemical foaming agent and a dialkyl peroxide as a crosslinking agent in a main component made of ethylene / methyl methacrylate. Calcium carbonate is added as a material. The rust preventive seal member 15 is adjusted so as to start expansion by heating at a temperature of 140 ° C.

  In addition, the outer peripheral shape of the rust preventive seal member 15 is substantially rectangular, and the outer peripheral size is set to be slightly smaller than the area of the second connecting piece 72 of the hinge part 7 facing the body panel 8.

Next, the hinge part 7 and the body panel 8 are fixed using the vehicular packing 1 having the above-described configuration as follows.
First, as shown in FIGS. 3 and 4, the vehicle packing 1 is interposed between the body panel 8 and the second connecting piece 72 of the hinge part 7, and the two bolts 5 are part through holes 721 and 722, respectively. The through holes 11 and 12 and the body through holes 81 and 82 are passed through in this order. In this example, the two bolts 5 are fixed by welding their heads and the second connecting piece 72 to the welded portion 59 (FIG. 4) in a state where they are passed through the component through holes 721 and 722 in advance. . Then, a nut 55 is screwed onto the tip of the bolt 5 protruding from the body through holes 81 and 82 and fastened and fixed. As a result, a fixing structure in which the vehicle packing 1 is interposed between the second connecting piece 72 of the hinge part 7 and the body panel 8 and bolted is obtained.

  Next, the paint baking process of the body panel 8 is performed. In this example, the whole body panel 8 and all the parts fixed to the body panel 8 are immersed in the paint, so-called electrodeposition coating is performed in which the paint is applied to the entire surface and electrodeposited. And the baking process of the coating film 6 is performed at the temperature of about 170 degreeC.

  Here, the state before the coating is shown in FIG. 5 for the state of the cross section near the outer periphery of the portion where the body panel 8, the vehicle packing 1, and the second connecting piece 72 of the hinge part 7 are laminated in the bolted fastening structure. Show. As shown in the figure, the outer dimension of the vehicular packing 1 is smaller than the outer dimension of the surface of the second connecting piece 72 facing the body panel 8, so that the space between the second connecting piece 72 and the body panel 8 is reduced. A gap is formed in

  FIG. 6 shows a state immediately after the electrodeposition coating in the coating baking process. As shown in the figure, the coating material 6 does not sufficiently penetrate and the coating film 6 is not formed at least in the gap portion between the second connecting piece 72 of the hinge part 7 and the body panel 8 facing each other. Therefore, before the baking treatment is performed, an unpainted portion 99 exists between the end surface 61 of the coating film 6 before drying and the fixed portion. The unpainted portion 99 is a portion where the metal material of the second connecting piece 72 of the body panel 8 or the hinge part 7 is exposed as it is.

  Next, as shown in FIG. 7, by heating the baking process, the coating film 6 is baked, and the rust preventive seal member 15 of the vehicular packing 1 is gradually expanded and expanded. The rust-proof seal member 15 covers the unpainted portion 99 and finally covers the end surface 61 of the coating film 6 while being filled in the gap between the body panel 8 or the second connecting piece 72 of the hinge part 7. Thus, a state in which the coating film 6 and the rust preventive seal member 15 are connected is obtained.

  As described above, in this example, the above-described special vehicle packing 1 is used, and the work is interposed between the hinge part 7 and the body panel 8 in the same manner as in the prior art. The painted portion 99 can be covered with the rust preventive seal member 15 expanded and expanded. Therefore, a structure that can exhibit an excellent rust prevention effect can be easily obtained. In particular, as in this example, the hinge part 7 for fixing the flip-up type back door has its axial direction oriented in the horizontal direction, so that rainwater is in contact with the second connecting piece 72 of the hinge part 7 and the body panel 8. It tends to accumulate in the gap. However, in the structure in which the rust preventive seal member 15 covers the end face 61 of the coating film 6 as in this example, the hinge component 7 and the body panel 8 can be reliably prevented from being rusted by rainwater.

(Example 2)
This example is an example in which the configuration of the vehicular packing 1 in the first embodiment is changed.
That is, as shown in FIG. 8, the vehicular packing 102 of this example can be separated into the packing main body portion 10 shown in FIG. 8A and the rust preventive seal member 15 shown in FIG. It is composed. In use, the rust preventive seal member 15 is disposed around the packing body 10. Others are the same as in the first embodiment.
In this case, although the work of combining the packing main body 10 and the rust preventive seal member 15 is increased, the same effects as those of the first embodiment can be obtained.

(Example 3)
This example is also an example in which the configuration of the vehicular packing 1 in the first embodiment is changed.
That is, as shown in FIG. 9, the vehicular packing 103 of this example is integrally formed with a rust-proof seal member so as to surround the periphery of two disk-shaped packing main body portions 13 and 14 each having through holes 131 and 141. 150 is provided.
In this case, since the arrangement | positioning ratio of the antirust seal member 150 can be increased, it is effective when expanding the range to expand. In other respects, the same effects as those of the first embodiment can be obtained.

  The fixing structure described above is not limited to the hinge part 7 described above, but can be applied to a bolt fastening structure between various parts and the body panel 8.

DESCRIPTION OF SYMBOLS 1,102,103 Packing for vehicles 10,13,14 Packing main-body part 11,12,131,141 Through-hole 15,150 Antirust seal member 7 Parts (hinge parts)
72 2nd connection piece 721,722 Parts through hole 8 Body panel 81,82 Body through hole

Claims (5)

A vehicle packing interposed between the body panel and the component when fixing the component by bolting to the body panel in the vehicle,
A packing main body made of a plate-like body having a through-hole for penetrating the bolt;
It consists of a rust preventive seal member arranged around the outer peripheral end face of the packing body part,
The vehicular packing is characterized in that the rust preventive seal member is made of a foamable material that expands and expands by heating during the paint baking process of the body panel.   2. The vehicular packing according to claim 1, wherein the rust preventive seal member is joined to an outer peripheral end surface of the packing main body and integrated with the packing main body.   3. The vehicular packing according to claim 1, wherein the part is a hinge part for fixing the flip-up back door. A fixing method for fixing parts by bolting to a body panel in a vehicle,
The vehicle packing according to any one of claims 1 to 3 is interposed between the body panel and the component, and a bolt is passed through the through-hole of the packing main body portion to be fastened and fixed.
Thereafter, a paint baking process of the body panel is performed to form a coating film on the surfaces of the body panel and the parts, and the rust preventive seal member is expanded by foaming by heating during the paint baking process. A method of fixing a vehicle component, wherein the end portion of the coating film facing the fixing portion with the component is covered with the antirust seal member. A fixing structure in which parts are fixed to a body panel in a vehicle by bolting,
The said packing main-body part of the packing for vehicles of any one of Claims 1-3 is interposed between the said body panel and the said components, and a volt | bolt penetrates the said through-hole of the said packing main-body part. And
The body panel has a coating film formed on the surface of the body panel and the parts by the paint baking process of the body panel, and the rust preventive seal member is expanded and expanded by heating during the paint baking process. A vehicle component fixing structure characterized by covering an end portion of the coating film facing a fixing portion between the vehicle component and the component.

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