JP2006314928A - Coating method of bumper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of coating a bumper and a bolt-hole cap at the same time to prevent an occurrence of a color difference without requiring a special temporary supporting means temporarily supporting the bolt-hole cap to the bumper. <P>SOLUTION: A temporary receiving hole 12i is provided on a portion requiring no coating (a wheel arch 16 covered by a wheel arch lacing) of the bumper 12, and when the bolt-hole cap 30 carrying off a head of a bolt fixing the bumper 12 is temporarily supported to the temporary receiving hole 12i, the bumper 12 and the bolt-hole cap 30 are coated at the same time, which does not require any special supporting means supporting the bumper 12 and the bolt-hole cap 30 integrally, and can prevent the occurrence of the color difference by coating the bumper 12 and the bolt-hole cap 30 at the same time. Further, even if a part of the wheel arch 16 of the bumper 12 is in an unpainted state by being obstructed due to the bolt-hole cap 30, there is no problem since the unpainted part is covered by the wheel arch lacing finally, and invisible. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bumper coating method for simultaneously coating a bumper and a bolt hole cap that closes a recess that houses a head portion of a bolt that attaches the bumper to a vehicle body.

When painting the body H of the automobile, the body H and the bumper 1 are coated at the same time by passing through the painting booth 2 with the bumper 1 mounted on the body H, and then the bumper 1 is removed from the body H and the supporting device. Patent Document 1 listed below discloses that the main body H and the bumper 1 are passed through the drying furnace 4 and dried while being supported by 20.
JP 7-88422 A

  By the way, when the bumper is fixed to the vehicle body with a bolt, the head portion of the bolt is housed in a recess formed in the bumper, and this recess is covered with a bolt hole cap so that the head portion of the bolt is not exposed. In this case, if the coating of the bumper and the bolt hole cap are performed separately, there is a problem that a delicate color difference is generated between the bumper and the bolt hole cap and the aesthetic appearance is impaired. Therefore, it is conceivable to support the bolt hole cap on the bumper and paint it at the same time, but in this way, not only a special support device for supporting the bolt hole cap on the bumper is required, but also the paint is blocked on the bolt hole cap. May cause poor paint on the bumper surface.

  The present invention has been made in view of the above-described circumstances, and prevents the occurrence of color difference by simultaneously coating the bumper and the bolt hole cap without requiring a special temporary support means for temporarily supporting the bolt hole cap to the bumper. For the purpose.

  In order to achieve the above object, according to the first aspect of the present invention, a bumper coating method for simultaneously coating a bumper and a bolt hole cap that closes a recess that houses a head of a bolt that attaches the bumper to the vehicle body. The bumper is provided with a bolt hole cap temporary support portion at a portion of the bumper that does not require painting, and the bumper cap and the bolt hole cap are simultaneously coated in a state where the bolt hole cap is temporarily supported on the bolt hole cap temporary support portion. A painting method is proposed.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the paint unnecessary portion of the bumper is a wheel arch that is connected to the bumper from the vehicle body and is covered with a wheel arch molding. A bumper painting method is proposed.

  The rear bumper 11 of the embodiment corresponds to the bumper of the present invention, and the temporary support hole 12i of the embodiment corresponds to the bolt hole cap temporary support portion of the present invention.

  According to the configuration of the first aspect, the bolt hole cap temporary support portion is provided in the bumper unnecessary coating portion, and the bumper cap and the bolt hole cap are simultaneously coated in a state where the bolt hole cap is temporarily supported on the bolt hole cap temporary support portion. Therefore, the bumper and the bolt hole cap can be coated at the same time to prevent occurrence of a color difference without requiring a special support means for integrally supporting the bumper and the bolt hole cap.

  According to the second aspect of the present invention, since the bolt hole cap temporary support portion is provided on the wheel arch that is connected to the bumper from the vehicle body and covered by the wheel arch molding, a part of the wheel arch is blocked by the bolt hole cap and is not painted. Even in this state, the unpainted portion is finally covered with the wheel arch molding and becomes invisible, so there is no problem.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

  1 to 15 show an embodiment of the present invention. FIG. 1 is a perspective view of a left half portion of a rear bumper, FIG. 2 is a view taken in the direction of the arrow in FIG. 1, and FIG. 4 is an exploded perspective view of FIG. 1, FIG. 5 is a sectional view taken in the direction of arrow 5 in FIG. 1, FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 3, and FIG. 7 is an enlarged sectional view taken along line 8-8 in FIG. 3, FIG. 9 is an enlarged sectional view taken along line 9-9 in FIG. 3, FIG. 10 is an enlarged sectional view taken along line 10-10 in FIG. 5 is an enlarged cross-sectional view of each part of FIG. 5, FIG. 12 is an explanatory diagram of the action when the bolt hole cap is painted, FIG. 13 is an enlarged cross-sectional view of line 13-13 in FIG. FIG. 15 is an exploded perspective view around the exhaust finisher.

  As shown in FIG. 1, a rear bumper 11 of an automobile includes a painted upper bumper 12 and an unpainted lower bumper 13. The rear bumper 11 includes a main body portion 14 extending in the left-right direction along the rear surface of the vehicle body, and a pair of side portions 15 (only the left side is shown in FIG. 1) extending from the left and right ends of the main body portion 14 to the front of the vehicle body. A rear portion of the wheel arch molding 17 covering the wheel arch 16 of the wheel W is coupled to the side portion 15 of the rear bumper 11. Further, an exhaust finisher 19 that decorates the outlet of the exhaust pipe 18 is provided at a position near the left end of the lower bumper 13.

  As shown in FIGS. 2 and 3, the upper bumper 12 and the rear bumper 11 in the main body portion 14 of the rear bumper 11 are coupled by a plurality of concave and convex engaging portions 21 arranged at predetermined intervals, and the side portion 13 of the rear bumper 11 is connected. The upper bumper 12 and the rear bumper 11 are positioned by one uneven engagement portion 22 and coupled by one clip 23.

  As is apparent from FIG. 6, in the main body portion 14 of the rear bumper 11, the upper bumper 12 and the uneven engagement portion 21 that couples the rear bumper 11 are located in the opening 12 b at the back of the slit 12 a formed at the lower edge of the upper bumper 12. The locking claw 12c protrudes from the top to the bottom, and the locking hole 13b formed at the center of the rib 13a protruding in front of the vehicle body at the upper edge of the lower bumper 13. Therefore, when the lower bumper 13 is moved relative to the upper bumper 12 toward the front of the vehicle body and the rib 13a of the lower bumper 13 is inserted into the opening 12b of the slit 12a of the upper bumper 12, the locking claws 12c of the upper bumper 12 are engaged with the lower bumper 13. The upper bumper 12 and the lower bumper 13 are coupled to each other in the main body portion 14 of the rear bumper 11 by elastically engaging the stop hole 13b.

  As apparent from FIGS. 2, 3 and 7, the bumper engagement portion 22 connecting the upper bumper 12 and the rear bumper 11 at the side 15 of the rear bumper 11 is provided with a flange 12 d (see FIG. 3) and a rectangular locking hole 12e formed on the upper edge flange 13c (see FIG. 3) of the lower bumper 13 and a rectangular locking protrusion 13d. The locking hole 12e and the locking projection 13d extend substantially in the longitudinal direction of the vehicle body.

  Therefore, when the lower bumper 13 is moved relative to the upper bumper 12 to the front of the vehicle body and the main body portion 14 is coupled, the locking holes 12e and the locking projections 13d are engaged with each other at the side portion 15 so that the upper bumper 12 is engaged. The lower bumper 13 and the lower bumper 13 can be positioned relative to each other, and in this state, the upper bumper 12 and the lower bumper 13 are coupled by the clip 23. Since the locking holes 12e and the locking projections 13d extend in the longitudinal direction of the vehicle body, the parallelism of the upper bumper 12 and the lower bumper 13 in the side portion 15 can be effectively ensured to increase the positioning accuracy. Moreover, since it is not necessary to use a large number of bolts or a large number of clips, it is possible to contribute to a reduction in the number of parts and the number of assembly steps.

  As shown in FIGS. 2, 3 and 5, the rear portion of the wheel arch molding 17 is connected to the wheel arch 16 of the upper bumper 12 by four clips 24... Are connected to the wheel arch 16 of the lower bumper 13.

  That is, an arc-shaped step 16a that is recessed toward the inside of the vehicle body is formed in a portion of the wheel arch 16 corresponding to the front edge of the upper bumper 12, and the radial outer edge of the wheel arch molding 17 is formed on the step 16a. In the state of contact, the four clips 24 projecting from the back surface of the wheel arch molding 17 engage with the upper bumper 12 (see FIG. 11A). At this time, the protrusion 16b protruding from the inner edge in the radial direction of the wheel arch 16 abuts so as to press the back surface of the wheel arch molding 17 with a fixed load by the clips 24.

  A portion of the wheel arch 16 corresponding to the front edge of the lower bumper 13 is formed with an arc-shaped step 16c that is recessed toward the inside of the vehicle body, and the radial outer edge of the wheel arch molding 17 abuts against the step 16c. In this state, the three clips 25 projecting from the inner surface of the wheel arch molding 17 engage with the lower bumper 13 (see FIG. 11B). Further, the rear end of the wheel arch molding 17 is joined to the front edge of the lower bumper 13 by one clip 26 inserted from the bottom to the top (see FIG. 8).

  As shown in FIGS. 3, 4, and 10, the upper bumper 12 is fixed to the vehicle body 28 with two bolts 27, 27 on the left and right sides. A cup-shaped recess 12g is formed in the upper bumper 12 in the vicinity of the fastening portion of each bolt 27, and the bolt 27 penetrating the bottom wall of the recess 12g and the vehicle body 28 is screwed into a weld nut 29 and fastened. Is done. In order to hide the head of the bolt 27, the recess 12 g of the upper bumper 12 is closed by the bolt hole cap 30. The bolt hole cap 30 is made of a synthetic resin made of the same material as that of the upper bumper 12, and two locking claws 30a, 30a projecting from the back surface thereof are formed into two locking holes 12h, The bolt hole cap 30 is fixed to the upper bumper 12 by engaging with each of 12h.

  The upper bumper 12 is a painted part, and the bolt hole caps 30 and 30 are also painted in the same color as the upper bumper 12. If the upper bumper 12 and the bolt hole caps 30 and 30 are separately coated, the tint is slightly different and the quality may be deteriorated. Therefore, when the upper bumper 12 is painted, the bolt hole caps 30 and 30 are also coated at the same time. For this purpose, as shown in FIG. 12, two sets of temporary support holes 12i, 12i are formed in the wheel arch 16 of the upper bumper 12 covered by the wheel arch molding 17, and bolt holes are formed in the temporary support holes 12i, 12i. By engaging the locking claws 30 a and 30 a of the cap 30, the bolt hole cap 30 is temporarily supported by the upper bumper 12.

  Therefore, as shown in FIG. 12, if the bolt hole cap 30 is temporarily supported on the upper bumper 12 and is applied at the same time, the difference in color between the bolt hole cap 30 and the upper bumper 12 can be eliminated. There is no increase in man-hours. If the bolt hole cap 30 is removed from the upper bumper 12 after painting, the portion where the bolt hole cap 30 is attached to the wheel arch 16 of the upper bumper 12 is not painted, but this portion is hindered by the wheel arch molding 17. There is no.

  Further, as shown in FIGS. 3, 5, and 11 (c), the front end of the upper bumper 12 is fixed by a tapping screw 32 to a spacer 31 fixed to the vehicle body. The tapping screw 32 is covered with the wheel arch molding 17 and is not visible from the outside.

  As shown in FIGS. 2, 3, and 9, the left and right ends of the lower edge of the lower bumper 13 are coupled to the vehicle body 28 by three clips 33 that are inserted from the bottom to the top. Further, as shown in FIG. 3 and FIG. 11 (d), in order to fix the wheel arch molding 17 to the wheel arch 16 of the vehicle body 28, six clips 34 supported on the inner surface of the front portion of the wheel arch molding 17 are wheels. Engage with arch 16.

  As shown in FIGS. 13 to 15, a metal exhaust finisher 19, a heat-resistant synthetic resin finisher holder 41, and a metal exhaust guide member 42 are combined to form three flanges 42 a of the exhaust guide member 42. ... Three bolts 43 penetrating through the three mounting brackets 19a of the finisher holder 41 and the exhaust finisher 19 are screwed and fastened to weld brackets 44 provided on the back surface of the mounting brackets 19a. .

  The exhaust guide member 42, the finisher holder 41, and the exhaust finisher 19 that are integrated by the three bolts 43 in this way are the two clips 33, penetrating the mounting bracket 41a provided on the lower surface of the finisher holder 41. 33 is fastened together with the lower bumper 13 and the vehicle body 28 (see FIGS. 3 and 9). Further, two mounting brackets 41b and 41b provided on the upper surface of the finisher holder 41 are fixed to the upper bumper 12 with two clips 45 and 45 (see FIG. 4). In this state, the outlet opening of the exhaust pipe 18 is loosely inserted into the exhaust guide member 42 (see FIG. 13), and the exhaust finisher 19 is exposed from the triangular opening flange 13f of the lower bumper 13 to be aesthetically pleasing. It improves (refer FIG. 4).

  On the rear surface of the finisher holder 41, triangular first positioning ribs 41c and six second positioning ribs 41d arranged radially on the outer periphery with a predetermined gap project. The opening flange 13f of the lower bumper 13 is sandwiched between the two positioning ribs 41c, 41d. Further, the triangular third positioning rib 41e provided on the inner periphery of the triangular first positioning rib 41c abuts on the step portion 19b on the front surface of the exhaust finisher 19 to position the exhaust finisher 19 in the front-rear direction. The exhaust finisher 19 has an outer peripheral flange 19c and an inner peripheral flange 19d extending toward the front of the vehicle body. The outer peripheral flange 19c is positioned in close contact with the inner peripheral surface of the first positioning rib 41c of the finisher holder 41.

  In this way, the gap between the opening flange 13f of the rear bumper 11 and the outer peripheral flange 19c of the exhaust finisher 19 is held constant by the first positioning rib 41c of the finisher holder 41, so that the gap is made uniform over the entire circumference. Hold and improve aesthetics. Moreover, the heat of the metal exhaust finisher 19 that has become hot due to contact with the exhaust gas can be blocked by the ribs 41c and the gaps of the heat-resistant synthetic resin finisher holder 41 so that it does not easily reach the opening flange 13f of the rear bumper 11. .

  Next, the assembly procedure of the rear bumper 11 will be described.

  First, the lower bumper 13 is approached from the rear to the upper bumper 12 so that the main body 14 of the upper bumper 12 and the lower bumper 13 is integrally joined, and a rib 13a provided on the upper edge of the lower bumper 13 is formed on the lower edge of the upper bumper 12. Are inserted into the slits 12a provided in the upper bumper 12, and the engaging claws 12c of the upper bumper 12 are engaged with the engaging holes 13b of the lower bumper 13 (see FIG. 6).

  At the same time, a locking projection 13d provided on the upper surface of the flange 13c of the lower bumper 13 is engaged with a locking hole 12e provided in the flange 12d of the upper bumper 12 so that the side portions 15 of the upper bumper 12 and the lower bumper 13 are integrally coupled. Further, the flange 13c of the lower bumper 13 and the flange 12d of the upper bumper 12 are coupled by a clip 23 (see FIG. 7).

  Subsequently, the exhaust guide member 42, the finisher holder 41, and the exhaust finisher 19 integrated with the three bolts 43 are fixed to the lower bumper 13 with the two clips 33, 33, and the two clips 45, 45 are used. It fixes to the upper bumper 12 (refer FIG. 13). Thus, by integrating the upper bumper 12 and the lower bumper 13 via the finisher holder 41, the rigidity of the rear bumper 1 can be increased.

  The assembled rear bumper 11 has its lower bumper 13 fixed to the vehicle body 28 by clips 33 (see FIG. 9), and its upper bumper 12 is fixed to the vehicle body 28 by two bolts 27, 27 on the left and right. (See FIG. 10).

  When the rear bumper 11 is fixed to the vehicle body in this way, the wheel arch molding 17 is mounted so as to cover the substantially semicircular wheel arch 16 defined by the vehicle body 28 and the rear bumper 11.

  That is, as shown in FIGS. 2, 3 and 5, the position near the rear part of the wheel arch molding 17 is coupled to the wheel arch 16 of the upper bumper 12 by four clips 24. Are connected to the wheel arch 16 of the lower bumper 13 with three clips 25... And one clip 26, and further supported on the front inner surface of the wheel arch molding 17 as shown in FIGS. 3 and 11 (d). The book clips 34 are engaged with the vehicle body 28.

  As is apparent from FIG. 11A, when the wheel arch molding 17 is coupled to the wheel arch 16 of the upper bumper 12 with the clips 24..., The projecting portion 16 b protruding from the radial inner edge of the wheel arch 16 serves as a fulcrum. The clip 24 serves as a power point, and the outer edge in the radial direction of the wheel arch molding 17 that is the point of action is brought into close contact with the wheel arch 16 step portion 16a, thereby preventing a gap from being generated between the wheel arch molding 17 and the wheel arch 16. And improve aesthetics.

  Further, since the wheel arch molding 17 is a generally plate-shaped member and does not have a mounting flange extending inward of the vehicle body, the size of the wheel arch molding 17 in the vehicle width direction is reduced to avoid interference with the wheels. The wheel tread can be secured sufficiently.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

  For example, although the rear bumper 11 has been described in the embodiment, the present invention can also be applied to a front bumper.

Perspective view of the left half of the rear bumper 2 direction view of FIG. 2 is an exploded perspective view corresponding to FIG. 4 direction view of FIG. 5 is a view taken in the direction of arrow 5 in FIG. 6-6 enlarged sectional view of FIG. FIG. 7 is an enlarged sectional view taken along line 7-7. FIG. 8 is an enlarged sectional view taken along line 8-8. 9-9 enlarged cross-sectional view of FIG. FIG. 4 is an enlarged sectional view taken along line 10-10. 5 is an enlarged sectional view of each part of FIG. Action diagram when painting bolt hole cap FIG. 13 is an enlarged cross-sectional view taken along line 13-13. 14-14 sectional view of FIG. Disassembled perspective view around the exhaust finisher

Explanation of symbols

11 Rear bumper (bumper)
12g recess 12i temporary support hole (bolt hole cap temporary support part)
16 Wheel arch 17 Wheel arch molding 27 Bolt 28 Car body 30 Bolt hole cap

Claims (2)

In the bumper coating method, the bumper (11) and the bolt hole cap (30) that closes the recess (12g) that houses the head of the bolt (27) that attaches the bumper (11) to the vehicle body (28) are simultaneously coated. ,
The bumper (11) is provided with a bolt hole cap temporary support portion (12i) in a paint-unnecessary portion, and the bolt hole cap (30) is temporarily supported on the bolt hole cap temporary support portion (12i). A method of painting a bumper, wherein the bolt hole cap (30) is painted simultaneously. The paintless portion of the bumper (11) is a wheel arch (16) that is connected to the bumper (11) from the vehicle body (28) and is covered by a wheel arch molding (17). How to paint bumpers.

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