JPH0747967B2 - Anticorrosion material for vehicles and anticorrosion treatment method for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle rust preventive material interposed between two articles detachably fastened by fasteners such as bolts and the like. The present invention relates to a vehicle rustproofing method for performing rustproofing.

(Prior Art) In recent years, in order to maintain the aesthetic appearance of a vehicle body for a long period of time, rust prevention deterioration is required for a long period of time.

Generally, the rustproofing treatment is carried out after the vehicle body is assembled, and the rustproofing treatment is carried out, for example, by degreasing the vehicle body, then performing zinc conversion treatment, and then performing electrodeposition coating and baking.

By the way, when the two parts are fastened with bolts or the like, there is a problem that the contact surface of the parts does not have a sufficient gap, so that the rust prevention treatment is not sufficiently performed. For this reason,
Conventionally, a seat surface rust preventive material made of butyl rubber or epoxy resin is interposed between parts to form a required gap, and the contact surface of the seat surface rust preventive material is rustproofed by the rust preventive material. The problem is solved to prevent rust deterioration for a long period of time.

For example, as shown in FIG. 5, a hood ledge 2 and a front fender 3 of a vehicle body that are detachably fastened with bolts 1.
A ring-shaped seat surface anticorrosive material 4 is interposed between and to form a predetermined gap between the hood ledge 2 and the front fender 3 to perform anticorrosion treatment. Then, at the time of baking in this rust preventive treatment, the contact surface of the seat surface rust preventive material 4 is rustproofed by the seat surface rust preventive material 4. That is, when the seat surface rust preventive material 4 is made of butyl rubber, the heat treatment causes the seat surface rust preventive material 4 to be softened and fused. It is what is done.

In addition, 5 is a washer and 6 is a weld nut fixed to the hood ledge 2.

(Problems to be Solved by the Invention) However, in the above seat rust preventive material, since the hood ledge 2 and the front fender 3 are adhered to each other,
When parts are removed for repair or the like, there is a problem that the front fender 3 cannot be easily removed from the hood ledge 2 even if the bolt 1 is removed. Further, when the front fender 3 is removed, the seat surface rust preventive material 4 fused or hardened and adhered is peeled off from the front fender 3 and the hood ledge 2 to expose an uncorrosion-pretreated surface, and the front fender 3 is again fixed to the hood ledge 2. Even when it is assembled into the above, a part of the surface not treated with rust may remain exposed, which causes a problem of deterioration in rust.

(Object) The present invention has been made in view of the above problems, and an object of the present invention is to mount a component on a vehicle easily and to prevent a deterioration in rust even if the component is removed. It is to provide a rust preventive material and a vehicle rust preventive treatment method.

(Means for Solving the Problem) In order to achieve the above object, the present invention relates to a rust preventive material interposed at a fastening position between two articles that are detachably fastened by a fastener, the rust preventive being The material is a first rust preventive material layer that contacts one of the articles,
A second rust preventive material layer which is in contact with the other article, and a first rust preventive material layer and a second rust preventive material layer which are provided between the first rust preventive material layer and the second rust preventive material layer.
It is composed of a rust preventive material layer and a peeling layer which adheres with a relatively weak adhesive force.

Also, a first rust preventive material layer that contacts one article, a second rust preventive material layer that contacts the other article, the first rust preventive material layer, and the second rust preventive material layer.
A rust preventive material, which is provided between the rust preventive material layer and a peeling layer for adhering the first rust preventive material layer and the second rust preventive material layer with a relatively weak adhesive force, is attached and detached by a fastener. After interposing at a fastening location between two articles that can be fastened and fastening the fastening location with a fastener, those articles are subjected to rust prevention treatment.

(Function) Since the rust preventive material is composed of the first rust preventive material layer, the peeling layer, and the second rust preventive material layer, the first, second, and
The anticorrosive layer is fused or hardened to each article,
Upon removal of the article, the rust inhibitor is easily peeled from the release layer.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view showing a mounting state of a seat surface rust preventive material according to the present invention, in which 11 is a hood ledge (part) of a vehicle body, 12 is a front fender (part), and 13 is a hood ledge. A ring-shaped seat surface anticorrosive material interposed between the front fender 12 and the front fender 12. As shown in FIG. 2, this is a first anticorrosive material layer made of butyl rubber or the like as in the conventional case.
13a and a peeling layer 13b laminated on the first rust preventive material layer 13a
And a second rust preventive material layer 13c made of butyl rubber or the like laminated on the peeling layer 13b.

The peeling layer 13b is composed of a polyethylene cured film or a Teflon film having excellent non-adhesiveness and non-adhesiveness, and the first rustproofing material layer 13a and the second rustproofing material layer 13c are the peeling layers.
They are bonded together via 13b with a relatively weak force to form a unit.

Further, the fastening surface 11a of the hood ledge 11 and the fastening surface 12a of the front fender 12 are detachably fastened by bolts 14. Reference numeral 15 is a weld nut fixed to the hood ledge 11, and 16 is a washer.

The order of installation is as follows: food ledge 11
The seat surface anticorrosive material 13 is placed at a predetermined position on the fastening surface 11a, the fastening surface 12a of the front fender 12 is then placed on the seat surface anticorrosion material 13, and the washer 16 is placed on the abutting surface thereof. Hood 14 and front fender 12 with bolts 14 as shown
And to assemble.

After this assembly is completed, the coating process (corrosion prevention treatment) is started in the same manner as in the past. That is, degreasing, zinc phosphate chemical conversion treatment,
Electrodeposition coating and baking are performed. Then, during this baking, the first rustproof material layer 13a is fused or adhered to the fastening surface 11a of the hood ledge 11, and the second rustproof material layer 13c is fused or adhered to the fastening surface 12a of the front fender 12.

If the parts are to be removed after this painting process is complete, the bolts 14 are first removed. Next, front fender
Remove 12 from hood ledge 11.

By the way, the seat surface rust preventive material 13 is provided with a release layer 13b made of a polyethylene cured film or the like as an intermediate layer, and the release layer 13b and the first and second rust preventive material layers 13a, 13c are fused or bonded at the time of baking. Since it does not adhere, the rustproofing material 13 is easily peeled off from the interface between the peeling layer 13c and the first rustproofing material layer 13a or the peeling layer 13b and the second peeling layer 13b when the peeling layer 13c is removed, as shown in FIG. It is easily peeled from the interface with the rust preventive material layer 13c. For this reason,
The first rustproof material layer 13a remains fused or adhered to the fastening surface 11a of the hood ledge 11, and the second rustproof material layer 13c remains fused or adhered to the fastening surface 12a of the front fender 12. The peeling layer 13b is the first and second rust preventive material layer 13
It remains attached to either a or 13c.

In this way, since the first and second rust preventive material layers 13a and 13c are not peeled off, the fastening surface 11a of the hood ledge 11 and the fastening surface 12a of the front fender 12 are not exposed and are said to be deteriorated in rust prevention. Never. Further, since the peeling can be performed with a small force, the hood ledge 11 and the front fender 12 are not deformed at the time of the removal.

FIG. 4 shows a second embodiment, which is composed of a vinyl chloride resin containing a large amount of an extender pigment such as calcium carbonate so as to cohesively destroy the peeling layer 13d.
This is because the peeling layer 13d undergoes cohesive failure when removing the front fender 12 from the hood ledge 11, and the cohesive failure prevents the first and second rust preventive material layers 13a and 13c from peeling from the hood ledge 11 and the front fender 12. It is the one. The peeling layer 13d that has undergone cohesive failure is separated into two and remains in a state of being laminated on the first and second rust preventive material layers 13a and 13c.

By the way, the seat surface rust preventive material 13 has a three-layer structure, and the polyethylene cured film or the like of the intermediate layer is generally hard, so that the deformation of the soft first and second rust preventive material layers 13a, 13c is prevented. As a result, it is possible to prevent the rust preventive material 13 from being deformed during manufacturing, distribution, and mounting work to be a defective product.

(Effect) As described above, according to the present invention, rust prevention does not deteriorate even if a component is removed, and the component can be easily removed, and the component is deformed during the removal. It has an effect that it does not happen.

[Brief description of drawings]

FIG. 1 is a sectional view showing an assembled state of a hood ledge and a front fender using the rust preventive material according to the present invention, FIG. 2 is a schematic explanatory view for explaining an assembling order, and FIG. 3 is a hood. FIG. 4 is an explanatory view when the front fender is removed from the ledge, FIG. 4 is an explanatory view of the second embodiment, and FIG. 5 is an explanatory view showing an assembled state of the conventional hood ledge and the front fender. 11 …… Hood ledge 12 …… Front fender 13 …… Seat surface rust preventive material 13a …… First rust preventive material layer 13b, 13d …… Release layer 13c …… Second rust preventive material layer 14 …… Bolt

Claims (2)

[Claims] 1. A rust preventive material interposed at a fastening position between two articles that are detachably fastened by a fastener, wherein the rust preventive material is a first rust preventive material layer that contacts one article. When,
A second rust preventive material layer which is in contact with the other article, and a first rust preventive material layer and a second rust preventive material layer which are provided between the first rust preventive material layer and the second rust preventive material layer.
A rust preventive material for a vehicle, comprising a rust preventive material layer and a peeling layer that adheres with a relatively weak adhesive force. 2. A first rust preventive material layer contacting one article, a second rust preventive material layer contacting the other article, and a space between the first rust preventive material layer and the second rust preventive material layer. The rust preventive material, which is provided on the first rust preventive material layer and the second rust preventive material layer and is bonded to the second rust preventive material layer with a relatively weak adhesive force, is removably fastened by a fastener. A rust preventive treatment method for a vehicle, which comprises interposing a fastening place between articles and fastening the fastening place with a fastener and then subjecting the articles to rustproof treatment.