JP5203106B2 - Electrodeposition coating method for automobiles - Google Patents

Description

  The present invention relates to a method for electrodeposition coating of an automobile in which a slide roller moves on and off a vehicle body by rolling a support roller installed on the slide door on a guide rail installed on the vehicle body.

2. Description of the Related Art Conventionally, some automobiles such as minivans are provided with a slide door that opens and closes by sliding. In the opening / closing movement of the slide door, a support roller installed on the slide door rolls on a guide rail installed on the vehicle body while supporting the load of the slide door (for example, Patent Document 1). reference).
JP2003-239946

  By the way, in the automobile provided with the sliding door, electrodeposition coating (for example, ED coating such as cation coating used for the base treatment) is performed at the time of manufacture. The electrodeposition coating is performed in a state where the slide door is attached to the vehicle body so that the slide door and the vehicle body are simultaneously electrodeposited. As a result, the support roller provided on the slide door and the guide rail provided on the vehicle body were also electrodeposited simultaneously.

  However, when the electrodeposition coating is performed as described above, the paint partially adheres to the rail-side outer peripheral surface of the support roller (the outer peripheral surface of the outer ring) by the electrodeposition coating. If it does so, the rail side outer peripheral surface of this support roller will become the shape uneven | corrugated with the coating material. If the rail-side outer peripheral surface becomes uneven as described above, when the sliding door is slid to open or close, a rolling noise (abnormal noise) between the support roller and the guide rail is generated. The problem that it becomes easy to generate | occur | produce and the quietness of a motor vehicle is impaired has arisen.

  The present invention has been made in view of such circumstances, and the problem to be solved by the present invention is that a support roller installed on a slide door rolls on a guide rail installed on a vehicle body. In the electrodeposition coating method for automobiles where the sliding door moves open / close with respect to the car body, electrodeposition is performed with the sliding door attached to the car body to form a coating on the surface of the car body and the sliding door. On the other hand, it is intended to suppress the generation of abnormal noise when the sliding door is slid and to improve the quietness when the sliding door is opened and closed.

In order to solve the above-mentioned problems, the electrodeposition coating method for automobiles according to the present invention employs the following means.
That is, according to the electrodeposition coating method for an automobile according to the present invention, the slide door is opened and closed with respect to the vehicle body body by rolling a support roller installed on the slide door on a guide rail installed on the vehicle body. The support roller is configured such that a rolling element is interposed between an inner ring and an outer ring so that the support roller can roll on the guide rail, and the support roller is positioned on the guide rail. An electrodeposition coating method for an automobile in which a sliding door is attached to the body body and the body body and the sliding door are electrodeposited together, and rolls on the guide rail while supporting the load of the sliding door. At least one part of the inner ring of the support roller and the rolling element is separately electrodeposited in advance, and the one part that has been separately electrodeposited in advance is connected to the support roller. The outer ring of the support roller is covered with an insulating member so that the outer ring of the support roller is deenergized from the surroundings, and the support roller is positioned on the guide rail. The sliding door to which the support roller is attached is attached to the vehicle body, and electrodeposition coating is performed. A coating film is formed on the surfaces of the vehicle body and the sliding door, and coating is applied to the outer peripheral surface of the outer ring of the support roller. A film is not formed.
The at least one part of the inner ring and the rolling element that is separately electrodeposited in advance may be either one part that is one of the inner ring and the rolling element or two parts that are both. .

  According to this electrodeposition coating method for automobiles, at least one part of the inner ring of the support roller and the rolling element that rolls on the guide rail while supporting the load of the sliding door is separately electrodeposited in advance. Assembling a single coated component as a support roller, covering the outer peripheral surface of the outer ring of the support roller with an insulating member, leaving the outer ring of the support roller in a de-energized state from the surroundings, and positioning the support roller on the guide rail Since the slide door with the support roller attached is attached to the vehicle body and electrodeposition coating is performed, the outer ring of the support roller is electrically insulated from the slide door side by the coating film formed on at least one part of the inner ring and the rolling element. Further, it is electrically insulated from the vehicle body side by an insulating member that covers the outer peripheral surface of the outer ring.

As a result, when the sliding door is attached to the vehicle body with the support roller positioned on the guide rail, and the body body and the sliding door are electrodeposited together, Since it is electrically insulated from the body of the vehicle body, it is no longer electrodeposited, and a coating film can be formed on the surface of the vehicle body and the sliding door, while the outer peripheral surface of the outer ring of the support roller is formed. A coating film is not formed.
As a result, at least the outer peripheral surface of the outer ring constituting the support roller can be prevented from adhering paint, and the surface can be made smooth without being uneven.
Therefore, the electrodeposition coating is performed with the slide door attached to the vehicle body, and the coating film is formed on the surface of the vehicle body and the slide door, but the coating film is not formed on the outer peripheral surface of the outer ring of the support roller. Therefore, the generation of abnormal noise when the sliding door is slid can be suppressed, and the quietness when the sliding door is opened and closed can be improved.

  According to the electrodeposition coating method for automobiles according to the present invention, the electrodeposition coating is performed in a state where the sliding door is attached to the vehicle body, and the coating roller is formed on the surfaces of the vehicle body and the sliding door, No coating film can be formed on the outer peripheral surface of the outer ring, so that the generation of abnormal noise when the sliding door is slid can be suppressed, and the quietness when the sliding door is opened and closed can be improved. .

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic side view schematically showing the automobile 10 in which the slide door 20 is opened and closed with respect to the vehicle body 11.
An automobile 10 shown in FIG. 1 is an automobile including a slide door 20 that is opened and closed by sliding, represented by a minivan or the like. The slide door 20 is generally attached to the vehicle body 11 that forms the outer frame of the automobile so that it can be opened and closed by sliding.
The slide door 20 is provided with a support guide roller mechanism 30 (see FIG. 2) for supporting the load of the slide door 20 and guiding the slide when the slide door 20 is slid. As shown in FIG. 1, the support guide roller mechanism 30 is attached to the rear portion of the slide door 20, and rolls and moves (rolls) in the guide rail 12 provided in the vehicle body 11.

FIG. 2 is a perspective view showing the support guide roller mechanism 30.
As shown in FIG. 2, the support guide roller mechanism 30 includes one support roller 31 and two guide rollers 40. The support roller 31 and the guide roller 40 are rotatably attached to a bracket member 22 installed on the slide door 20. Specifically, the support roller 31 is rotatably attached to a support roller support shaft 23 installed on the bracket member 22, and the guide roller 40 is a guide roller support shaft 24 installed on the bracket member 22. It is attached to be rotatable.
The single support roller 31 rolls on the guide rail 12 while supporting the load of the slide door 20. The two guide rollers 40 restrict the movement of the slide door 20 in the width direction of the vehicle body 11 and guide the slide of the slide door 20, and are arranged side by side in the longitudinal direction of the vehicle body 11. Both of these two guide rollers 40 are similarly configured.

3 is a cross-sectional view of the automobile 10 of FIG. 1 taken along the line III-III.
The support roller 31 includes an inner ring 32 that is fixedly installed on a support roller support shaft 23 provided on the slide door 20 side, a ball (rolling element) 33 that makes rolling contact with a ball side outer peripheral surface 32a of the inner ring 32, and a ball side. The inner peripheral surface 34 a includes an outer ring 34 that is in rolling contact with the ball 33 and the rail-side outer peripheral surface 34 b is in contact with the guide rail 12.
In the support roller 31, only the inner ring 32 before being assembled and formed on the support roller 31 is separately electrodeposited in advance. On the other hand, the ball 33 and the outer ring 34 are not subjected to electrodeposition coating.
In the support roller 31 shown in FIG. 3, the rail-side outer peripheral surface 34 b of the outer ring 34 is disposed so as to cover the guide rail 12 and a resin cap 45 as an insulating member that is in a non-energized state. Yes. The resin cap 45 is also used as an adjustment tool for the slide door 20 with respect to the vehicle body 11 when the slide door 20 is installed on the vehicle body 11.

Next, an electrodeposition coating method for the automobile 10 that performs electrodeposition coating together with the slide door 20 provided with the support guide roller mechanism 30 attached to the vehicle body 11 will be described.
FIG. 4 is a flowchart showing the electrodeposition coating process (electrodeposition coating method) of the automobile 10.
First, an inner ring 32, a ball 33, and an outer ring 34, which are formed by cutting or the like and constitute the above-described support roller 31, are prepared.
Next, of the inner ring 32, the ball 33, and the outer ring 34, only the inner ring 32 alone before assembly formed on the support roller 31 is separately electrodeposited (step S1). Specifically, the inner ring 32 is immersed in the paint treatment tank, the inner ring 32 and the paint are energized, and a coating film is formed on the outer peripheral surface including the ball-side outer peripheral surface 32a of the inner ring 32. In addition, the coating film formed by this electrodeposition coating functions as an insulator.

Next, the support roller 31 is formed by assembling the inner ring 32 that has been previously electrodeposited, the ball 33 and the outer ring 34 that have not been electrodeposited (step S2). Specifically, as shown in FIG. 3, an inner ring 32, a ball 33, and an outer ring 34 are arranged from the inside, and these are assembled to form the support roller 31.
Next, the support roller 31 formed in this way is disposed on the support roller support shaft 23 provided on the slide door 20 side (step S3). Specifically, the support roller 31 is rotatably attached to the support roller support shaft 23 by being coupled to the support roller support shaft 23 by caulking. In step S3, the guide roller 40 described above is attached to the guide roller support shaft 24 to form the support guide roller mechanism 30.

Next, a resin cap 45 that is in a non-energized state with the surrounding guide rails 12 is disposed on the rail-side outer peripheral surface 34b of the outer ring 34 with respect to the support roller 31 that is rotatably mounted (step S4). Specifically, a resin cap 45 made of an insulating material is placed on the support roller 31 so as to cover the rail-side outer peripheral surface 34b of the outer ring 34 so that the support roller 31 and the guide rail 12 are insulated.
Next, the sliding door 20 is attached to the vehicle body 11 so that the support roller 31 and the guide rail 12 are in an insulated state in which the energization is not performed and the support roller 31 is arranged on the support roller support shaft 23 as described above. In the attached state, electrodeposition is applied (step S5). Specifically, the slide door 20 is attached to the vehicle body 11 so that the support roller 31 is arranged on the support shaft 23 for the support roller, and in this attached state, all are immersed together in the paint processing tank. The vehicle body 11 and the slide door 20 and the paint are energized, and a coating film is formed on the outer peripheral surfaces of the vehicle body 11 and the slide door 20.

That is, in step S5, the outer ring 34 of the support roller 31 is electrically insulated from the slide door 20 side by the coating film formed on the ball side outer peripheral surface 32a of the inner ring 32, and further the rail side outer peripheral surface 34b of the outer ring 34. It is electrically insulated from the vehicle body 11 side by the resin cap 45 that covers.
As a result, when the slide roller 20 is attached to the vehicle body 11 with the support roller 31 positioned on the guide rail 12 and the vehicle body 11 and the slide door 20 are electrodeposited together, Since the outer ring 34 is electrically insulated from the slide door 20 and the vehicle body 11, no electrodeposition is applied, and a coating film is formed on the surfaces of the vehicle body 11 and the slide door 20. However, no coating film is formed on the rail-side outer peripheral surface 34b (including the ball-side inner peripheral surface 34a) of the outer ring 34 of the support roller 31.
As a result, the paint can be prevented from adhering to the rail-side outer peripheral surface 34b of the outer ring 34 constituting the support roller 31, so that the outer ring 34 does not have an uneven shape but can be made smooth.
Even in the ball 33 of the support roller 31, like the outer ring 34, it is electrically insulated from the slide door 20 and the vehicle body 11, so that it is no longer electrodeposited and the outer surface of the ball 33 is not coated. Does not form a coating.

Electrodeposition coating is performed with the slide door 20 attached to the vehicle body 11 as described above (step S5). After the formed coating film has dried, the slide door 20 is then removed from the vehicle body 11 and the outer ring is removed. The resin cap 45 that has been placed on the support roller 31 so as to cover the rail-side outer peripheral surface 34b of 34 is removed from the support roller 31 (step S6), thereby completing the electrodeposition coating process.
The vehicle body 11 from which the slide door 20 is removed is provided with a driving device (not shown) including a seat (not shown) and a handle, and the slide door 20 is attached again.

  As described above, electrodeposition coating is performed with the slide door 20 attached to the vehicle body 11, and a coating film is formed on the surfaces of the vehicle body 11 and the slide door 20. It is possible to prevent the surface 34b from forming a coating film, thereby suppressing the generation of abnormal noise when the sliding door 20 is slid, and improving the quietness when the sliding door 20 is opened and closed. .

Moreover, the support roller 31 coated by the above-mentioned electrodeposition coating method can also have the following effects.
In other words, the conventional support roller used stainless steel (SUS) having corrosion resistance as the material of the inner ring 32, the ball 33, and the outer ring 34 in order to make it difficult to rust even when the coating film is peeled off. However, according to the above-described electrodeposition coating method, the corrosion resistance can be improved by the coating film formed on the outer peripheral surface of the inner ring 32. As a result, it is possible to select iron that is easy to process and inexpensive as the material of the inner ring 32.
Therefore, according to the support roller 31 coated by the above-described electrodeposition coating method, it is easy to process and workability can be improved, and the support guide roller mechanism 30 can be manufactured at low cost.

In addition, the electrodeposition coating method of the motor vehicle based on this invention is not limited to above-described embodiment, In the range which does not change the summary of this invention, it can change suitably.
That is, in the above-described embodiment, the inner electrode 32 separately provided in advance in step S1 is the inner ring 32 of the support roller 31 alone. As at least one part of the moving body, either one of the inner ring alone and the rolling element alone or two parts of both may be used.

In the above-described embodiment, the guide roller 40 is attached to the guide roller support shaft 24 to constitute the support guide roller mechanism 30 in step S3 described above. However, the attaching operation is not limited to the step S3, and the supporting guide roller mechanism 30 is configured by attaching the guide roller 40 to the guide roller support shaft 24 before step S5. That's enough.
In the above-described embodiment, the resin cap made of the above-described insulating material is used as the insulating member disposed on the rail-side outer peripheral surface 34b of the outer ring 34. However, as the insulating member according to the present invention, As long as it has the function of de-energizing with the guide rail, an appropriate shape can be adopted without any problem.

It is a schematic model side view which shows typically about the motor vehicle in which the support roller of embodiment is installed. It is a perspective view which shows a support guide roller mechanism. It is sectional drawing which shows the III-III cross section arrow of the motor vehicle of FIG. It is a flowchart which shows the electrodeposition coating process of a support roller.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Automobile 11 Car body 12 Guide rail 20 Slide door 22 Bracket member 23 Support shaft for support roller 23a Outer peripheral surface of support shaft for support roller 24 Support shaft for guide roller 30 Support guide roller mechanism 31 Support roller 32 Inner ring 32a Ball side outer peripheral surface 33 balls (rolling elements)
34 Outer ring 34a Ball side inner peripheral surface 34b Rail side outer peripheral surface 40 Guide roller 45 Resin cap (insulating member)

Claims (1)

The support roller installed on the slide door rolls on the guide rail installed on the vehicle body, and the slide door is opened and closed relative to the vehicle body. The support roller is located between the inner ring and the outer ring. A rolling element is interposed between the sliding door and the vehicle body body in a state where the support roller is positioned on the guide rail. It is an electrodeposition coating method for automobiles in which the sliding door is electrodeposited together,
At least one part of the inner ring and the rolling element of the support roller that rolls on the guide rail while supporting the load of the sliding door is separately electrodeposited in advance, and the one part that has been separately electrodeposited in advance. Is assembled as the support roller, and the outer peripheral surface of the outer ring of the support roller is covered with an insulating member so that the outer ring of the support roller is de-energized from the surroundings, and the support roller is positioned on the guide rail. In this state, the slide door with the support roller attached is attached to the vehicle body to perform electrodeposition coating, and a coating film is formed on the surfaces of the vehicle body and the slide door, and the outer periphery of the outer ring of the support roller An electrodeposition coating method for automobiles, wherein a coating film is not formed on the surface.

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