JP2010064671A - Spoiler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear spoiler contributing to an improvement in a yield and stabilization of quality, by sufficiently coping even with a specification such as incorporation of an antenna, storage of a wiper and two-tone color by vibrational welding. <P>SOLUTION: The synthetic resin rear spoiler 1 is provided by integrally welding an upper member 2 and a lower member 3. While an eaves-shaped collar piece 25 projecting inward from an inner wall surface 22b near the lower edge 22a of a vertical wall part 22 in the upper member 2 downwardly extending the vertical wall part 22 by bending from an outer peripheral part 21a of an upper wall part 21, and a tower body 26 forming an eaves-shaped overhang piece 261 projecting inward from the inner wall surface 22b near the lower edge 22a of the vertical wall part 22, bent in a tip part 261a of the overhang piece, further extended as a vertical piece 262 and joined to the upper wall part 21, are alternately arranged along the lower edge of the vertical wall part 22, a welding rib 33 is arranged in an opposed part of the collar piece 25 and the overhang piece 261 on the upper surface side of the lower member 3, and the upper member 2 and the lower member 3 are integrated by welding to the collar piece 25 and the overhang piece 261 of the rib. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automobile spoiler.

  For example, a spoiler extending in the vehicle width direction may be attached to the roof end or rear window upper portion of a wagon type, one-box type or the like. Since this spoiler is formed in a hollow shape using a synthetic resin material, there have been many proposals by blow molding (for example, Patent Documents 1 to 3), and blow spoilers have been common so far.

JP 2007-62439 A JP 2004-106765 A Japanese Patent No. 2922444

However, recent spoilers often have functions such as built-in antennas and wiper storage, and in the case of blow-molded products, it was necessary to make holes in the spoiler and attach the antenna. Not only the problem of increasing the number of drilling steps, but also the antenna may be damaged. Furthermore, there are cases in which a two-tone color specification is required. In such a case, masking or the like is required at the time of painting. In addition, there are various restrictions on masking, which increases costs and restricts design freedom.
In order to solve such a problem, for example, a measure of vibration welding by using a two-piece spoiler made of an injection molded product or the like can be considered. Vibration welding is a technique in which the upper member and the lower member are joined, held by the upper jig and the lower jig of the welding jig, and then pressurized and subjected to vibration to weld and integrate the joined parts. In the case of the above spoiler, a new problem occurred. Spoiler providing the built-in antenna and wiper storage is at a point that the upstanding portion k _1, since the distance between the jig 92 and the lower jig 91 on according to the vibration welding jig as in Figure 11 becomes longer, the standing upright portion It was easy to fall down during vibration welding and cause poor welding. The conventional spoiler has no particular problem when the upper member e and the lower member f are vibrated and welded as shown in FIG. 10 because the welding jigs 81 and 82 are close to each other. However, in a recent spoiler with a built-in antenna, As shown in FIG. 11, the upper jig 92 and the lower jig 91 in the standing part k ₁ are separated from each other and easily fall down when vibration welding is performed. In addition, since the pressure is applied to the lower jig 91 in the upward direction at the time of welding, the upright portion is more likely to fall down.

  The present invention solves the above-described problems, and an object thereof is to provide a spoiler that can sufficiently cope with specifications such as a built-in antenna, wiper storage, two-tone color, etc. by vibration welding and contribute to yield improvement and quality stability. To do.

In order to achieve the above object, the gist of the invention described in claim 1 is a synthetic resin spoiler in which the upper member and the lower member are welded and integrated, and the standing wall portion is bent from the outer peripheral portion of the upper wall portion. On the upper member extending downward, a hook-shaped flange piece protruding inward from the inner wall surface near the lower edge of the standing wall portion, and a hook shape protruding inward from the inner wall surface near the lower edge of the standing wall portion A housing that forms a projecting piece, is bent at the tip of the projecting piece, is further extended as a standing piece, and is coupled to the upper wall portion, is alternately arranged along the lower edge of the standing wall portion. On the other hand, on the upper surface side of the lower member, a welding rib is provided at a position opposite to the flange piece and the overhanging piece, and the upper member and the lower member are attached by welding the rib to the flange piece and the overhanging piece. The spoiler is characterized by being integrated.
The spoiler according to a second aspect of the present invention is the spoiler according to the first aspect, wherein the upper member is disposed on the lower side as the lower member, the lower member is disposed on the upper side as the upper member, and the flange piece and the rib The upper member and the lower member are integrated by welding to the projecting piece.
A spoiler according to a third aspect of the present invention is characterized in that, in the first or second aspect, the flange piece and the protruding piece are formed as an inner flange that is continuously integrated, and the lower surface thereof is flattened. Here, the “lower surface” of claim 2 is the “upper surface”. A spoiler according to a fourth aspect of the present invention is the spoiler according to the first to third aspects, wherein the melting allowance of the welding rib facing the protruding piece is set higher than the melting allowance of the welding rib facing the flange piece. It is characterized by that. According to a fifth aspect of the present invention, in the spoiler according to any one of the first to fourth aspects, the welding rib is separated from the welding rib facing the overhanging piece adjacent to the overhanging piece according to the welding rib facing the flange piece. It is provided so that it may become low. A spoiler according to a sixth aspect of the present invention is the spoiler according to any one of the first to fifth aspects, wherein a plurality of the welding ribs are provided on the upper surface side of the lower member so as to be separated from each other in a direction intersecting the extending direction of the welding rib. Along the lower edge of the standing wall portion is sealed by welding the outer welding rib to the flange piece and the overhanging piece.

As in the first aspect of the present invention, when a frame and a flange piece are provided along the lower edge of the upper wall of the upper member, it becomes a shape that creates a shelf that serves as a welding surface. This eliminates the problem of falling down when the conventional vibration welding is performed. Although it is difficult to form a through hole for the frame surrounded by the overhanging piece and the upright piece, injection molding by a slide mold or the like is performed by alternately arranging the hook piece and the frame along the lower edge of the standing wall. Is possible. A two-part spoiler of an upper member and a lower member can be formed by injection molding or the like. Therefore, additional functions such as built-in antenna and wiper storage, which were difficult with blow-molded spoilers, and two-tone color specifications can be handled smoothly.
As in the second aspect of the invention, even if the upper member and the lower member are replaced upside down, the same operation and effect as in the first aspect of the invention can be obtained.
As in the third aspect of the invention, if the flange piece and the overhanging piece are made into an inner flange that is continuously integrated and the lower surface thereof is made flat, it becomes easy to create vibration in vibration welding. The upper member and the lower member make the welding integration quicker, and the welding becomes more reliable.
As in the invention of claim 4, when the melting allowance of the welding rib facing the overhanging piece is set higher than the melting allowance of the welding rib facing the flange piece, it is supported by the standing piece related to the casing. Since the welding rib can be welded and integrated with the overhanging piece in a solid and reliable state, a spoiler with stable quality can be obtained.
As in the invention of claim 5, when the welding allowance relating to the welding rib facing the flange piece becomes lower as it goes away from the welding rib facing the adjacent overhanging piece, welding is performed from a portion where the flange piece is difficult to bend. And can be welded more firmly. In addition, when welding the welding ribs to the flange piece and the overhanging piece, heat is continuously transmitted from the vicinity of the overhanging piece, so that not only the overhanging piece that is easily subjected to pressure but also the pressure away from the overhanging piece is difficult to be applied. The welding rib can be surely melted also on the flange.
As in the sixth aspect of the invention, when the lower edge of the standing wall portion is sealed by welding the outermost welding rib to the flange piece and the overhanging piece, the welding portion of the welding rib existing inside thereof is protected. it can. Even if the welded portion of the welding rib on the inner side is liable to reduce the welding strength due to a solvent or the like during car washing, the outermost welding rib prevents the solvent from entering and does not enter the inner side.

  The spoiler of the present invention not only supports the built-in antenna, wiper storage, two-tone color specifications, etc., but also when the upper member and lower member are welded and integrated by vibration welding, also for quality stability, yield improvement, and cost reduction Exhibits excellent effects such as contributing.

  Hereinafter, embodiments of the spoiler according to the present invention will be described in detail. 1 to 8 show an embodiment of the spoiler of the present invention. FIG. 1 is an exploded perspective view of the spoiler. FIG. 2 is a cross-sectional view of the upper member taken along the line IV-IV and the lower member taken along the line VV. FIG. 3 is an explanatory cross-sectional view of a spoiler formed by welding and integrating the upper member and the lower member of FIG. 2, and FIG. 4 is an upper member facing the welding rib of the lower member in FIG. FIG. 5 is an enlarged vertical sectional view around the casing of FIG. 3, and FIG. 6 is an explanatory view showing the range in which (a) is applied around the casing. ) Is an explanatory view showing a coating range of a portion corresponding to (a) in the prior art of FIG. FIG. 7 is an enlarged longitudinal sectional view of the flange region, FIG. 8 is an explanatory sectional view showing the relative positional relationship between the welding rib, the flange piece, and the casing in the welding process, (A) is before welding, (B) is In the first stage where the welding rib and the housing are welded, (c) is not only the welding rib and the housing, but also in the second stage where the welding rib and the hook piece are fused and integrated to complete the spoiler. ) Corresponds to a cross section taken along line IX-IX in FIG. 5 and a cross section taken along line XX in FIG. 4 and 8 are shown upside down for easy understanding of the drawings.

  The spoiler 1 includes a synthetic resin upper member 2 provided with a bowl-shaped collar piece 25 and a casing 26, and a synthetic resin lower member 3 that forms a welding rib 33 at an opposing portion of the collar piece 25 and the casing 26. And both are integrated by welding (FIGS. 1 to 3). The wing-shaped spoiler 1 extending in the vehicle width direction as shown in FIG. 3 is attached to the back door 42 near the roof end 41 of the wagon type automobile. The spoiler 1 of the present embodiment has a two-tone tailoring in which the color of the lower member 3 is black and the color of the upper member 2 is matched to the body color.

  The upper member 2 is a flat plate-like injection-molded product that forms the upper half of the spoiler 1 that is long in the vehicle width direction in the direction perpendicular to the plane of FIG. The upper member 2 has a flat upper wall portion 21 whose upper surface 2A is a design surface in the vehicle mounting state of FIG. 3, and the upper wall portion 21 gently descends toward the rear of the vehicle. And a standing wall portion 22 that is bent into a substantially L-shape and extends downward. Here, “downward” in the present invention refers to the vehicle lower side direction, and when the spoiler 1 is attached to the back door 42 as shown in FIG. The upper direction of the vehicle is the upper side of the drawing. The upper member 2 is welded and integrated from above so as to adhere to the lower member 3.

  As shown in FIGS. 5 and 7, the upper member 2 has an overhanging piece 261 of the casing 26 and the flange piece 25 inward from the inner wall surface 22 b near the lower edge 22 a of the standing wall portion 22. Projects approximately horizontally. In FIG. 1, the central portion of the standing wall portion 22 of the upper member 2 is recessed because a lamp is attached, but in the region closer to both ends from the center as indicated by the arrows IV-IV in FIG. A protruding piece 261 and a flange piece 25 are provided.

  The projecting piece 261 has a flat plate shape, projects substantially horizontally from the inner wall surface 22b near the lower edge 22a of the standing wall portion 22 toward the inside of the upper member body 2a, and bends at the distal end portion 261a of the projecting piece 261. Further, it extends as a standing piece 262 and is coupled to the upper wall portion 21. A housing 26 is formed by the protruding piece 261 and the standing piece 262 (FIG. 5). Reference symbol u denotes a through hole surrounded by the overhanging piece 261, the upright piece 262, and the upper member 2. The overhanging piece 261 is arranged horizontally so that it can easily function as a welding surface when welding with the welding rib 33 of the lower member 3, and the overhanging piece 261 can be kept horizontal during welding. A piece 262 supports the piece. A standing piece 262 rises on the upper wall portion 21 and its tip is connected to the overhanging piece 261. A plurality of housings 26 are intermittently formed along the vehicle width direction on the vehicle rear side of the upper member 2.

On the other hand, the collar piece 25 is a plate-like portion arranged so as to fill a space between the plurality of casings 26 formed intermittently along the lower edge 22 a of the standing wall portion 22. It projects substantially horizontally from the inner wall surface 22b near the lower edge toward the inside of the upper member main body 2a. The flanges 25 and the casings 26 are alternately arranged along the lower edge of the standing wall portion 22. With such a configuration, the through hole u of the casing 26 can be formed at the time of injection molding, and an injection molded product of the upper member 2 can be manufactured.
Here, the flange piece 25 and the overhanging piece 261 are continuously integrated to form a shelf-shaped inner flange 2b as shown in FIG. 4 forming the same surface. The lower surface 2b ₁ of the inner flange 2b is formed flat. An inner flange 2b projecting inward from the inner wall surface 22b near the lower edge of the standing wall portion 22 in a certain length is substantially horizontal in a strip shape along the lower edge 22a of the standing wall portion 22 serving as the outer peripheral edge of the upper member 2. It is extended. For this reason, the standing piece 262 of the casing 26 rises like a comb at a predetermined pitch at the inner peripheral edge of the inner flange 2b. In FIG. 4, symbol k indicates an opening between the upright pieces 262. To the horizontal extending inner flange 2b in strip form, when welded to the inner flange 2b the welding ribs 33 by vibration welding, easily vibrate against the welding surface, also the melt allowance h ₁ of the welding rib 33 This is because the setting is easy. The inner flange 2b (the overhanging piece 261 and the flange piece 25) is provided near the lower edge 22a of the standing wall portion 22 at a slightly retracted position when the upper member 2 and the lower member 3 are welded and integrated. This is to cover the lower member 3 as shown in FIG.

The lower member 3 is a lower half portion of the spoiler 1 which is welded and integrated with the upper member 2 and has a long shape in the vehicle width direction (FIG. 1). The lower member 3 has substantially the same plan view shape as the upper member 2, but is provided with a recess for forming an antenna storage space S as shown in FIGS. The lower member 3 is welded with a height h that abuts against the inner flange 2b by assembling with the upper member 2 on the upper surface 3A side of the lower member 3 at a position facing the inner flange 2b (the flange piece 25 and the overhanging piece 261). Ribs 33 are formed. In FIG. 5 and FIG. 7, the upper portion of the rib that intersects with the welding rib 33 and the inner flange 2 b to interfere with each other is a welding allowance h _{1 of} the welding rib. Reference numeral h ₂ represents the remaining portion remains even after the welding of the inner flange 2b and the welding ribs 33.

In the lower member 3, a flat portion 32 extending in the direction perpendicular to the paper surface of FIG. 2 is formed at a portion facing the inner flange 2 b, that is, in a region approaching both ends of the lower member 3 from the center near the VV line in FIG. Further, a welding rib 33 having a rib-like cross section as shown in FIG. Although the welding rib 33 from the flat portion 32 substantially disposed horizontally raised, its upper is melted allowance h _1. The welding rib 33 runs on the flat portion 32 with an equal cross-sectional shape having a uniform rib thickness in the direction perpendicular to the paper surface of FIG. Although one welding rib 33 may be provided, three welding ribs 33 are provided here. The spoiler 1 is completed by welding these ribs 33 to the opposite positions of the inner flange 2b (the flange piece 25 and the overhanging piece 261). In addition, the lower member 3 of the present embodiment is not only the periphery on the vehicle rear side where the inner flange 2b is provided, but also has a longitudinal cross-sectional “h” shape that forms the vehicle front side periphery and the space S as shown in FIG. Welding ribs 34 and 35 are also provided at the ridges of the part. These welding ribs 34, 35 also have a rib height that abuts against the inner surface of the upper member 2 when assembled with the upper member 2, so that the welding integration of the upper member 2 and the lower member 3 is further ensured. To do.

Welding ribs 33 having a melting margin h ₁ in top abuts the inner flange 2b in assembling the upper member 2, by melting margin h ₁ is welded to melt, integrating the upper member 2 and lower member 3 To do. Welding rib 33 formed on the opposing part of the inner flange 2b is sufficient by providing the melt allowance h ₁ thereon. However, in FIG. 4, only the welding main rib 33 _{b in} the middle can be described as the welding rib 33, but the welding facing the protruding piece 261 rather than the welding allowance h ₁₂ of the welding rib 33 _{b 2} facing the collar piece 25. higher is more preferable to set the direction of melt margin h ₁₁ of use ribs 33b ₁ (FIG. 5, FIG. 7). This is because, when the upper member 2 and the lower member 3 are integrated by vibration welding via the welding ribs 33, a stronger welding and integration of both can be achieved. Here, the welding allowance h _{1 of} “the welding allowance h ₁₂ of the welding rib 33 facing the collar piece 25” refers to the average value of the welding allowance at the portion of the welding rib 33 facing the collar piece 25, “ The welding allowance h _{1 of} the welding allowance h _{11 of} the welding rib 33 facing the overhanging piece 261 refers to the average value of the welding allowance at the portion of the welding rib 33 facing the overhanging piece 261. The site of the protruding piece 261 and the counter welding ribs 33, so that can be firmly integrated with the projecting pieces 261, melting allowance h ₁ is sufficiently large (that is, the height h is higher ribs) welding rib 33 is set Is done. And it inclines like FIG. 4 toward the site | part of the welding rib 33 which opposes the collar piece 25 from the site | part of the welding rib 33 which opposes the overhang | projection piece 261, and rib height h is height h after that. only ₁₀ minutes decreases stepwise, low melting allowance h ₁ at a position facing the flange piece 25 (i.e. lower rib height h) welding rib 33 is set.

Next, a mechanism in which the upper member 2 and the lower member 3 are integrated by welding the welding rib 33 to the flange piece 25 and the overhanging piece 261 will be described. At the same time, the upper member 2 and the welding member h ₁ are set higher than the welding allowance h ₁ of the welding rib 33 facing the flange piece 261 than the welding allowance h ₁ of the welding rib 33 facing the overhanging piece 261. The reason why the lower member 3 can be welded and integrated more strongly will be described with reference to FIGS. In the present embodiment, among the three welding ribs 33 in FIG. 4, the welding rib 33 b in the middle is the main force of welding integration of the upper member 2 and the lower member 3, and the outer side ( The outermost welding rib 33 is the welding auxiliary rib 33a, and the inner intermittent welding rib 33 is the welding auxiliary rib 33c. Three welding ribs 33a to 33c are arranged apart from each other in a direction intersecting the extending direction of the ribs. FIG. 8 is an explanatory sectional view showing a relative positional relationship between the welding main rib 33b and the inner flange 2b in the welding process. First, the description will be made by paying attention to the welding main rib 33b.

In this vibration welding, first, the upper member 2 and the lower member 3 are attached to the welding jig so that the inner surface 2B of the upper member 2 and the inner surface 3B of the lower member 3 face each other as shown in FIG. 2 (FIG. 2). The upper member 2 is set on the upper jig 7 of the welding jig incorporated in the table of the vibration welding machine, and the lower member 3 is set on the lower jig 6 (A in FIG. 8).
Next, the upper member 2 and the lower member 3 are pressurized in the joining direction, and vibration is applied. A part of the joining part of each overhanging piece 261 and the upper part of the welding main rib 33b (that is, the melting allowance h ₁ ) is melted by friction energy, and the joining part is welded (b in FIG. 8). In the first stage in which the welding main rib 33b and the casing 26 are welded, the overhanging piece 261 receives a pressing force from the lower member 3 by the pressurization in the joining direction. The standing piece 262 supports and prevents the protruding piece 261 from being bent and deformed by the pressing force. Here, if the height h of the welding main rib 33b facing the flange piece 25 is the same as the height h of the welding main rib 33b facing the overhanging piece 261, the flange piece 25 without the standing piece 262 is formed. When the pressing force is received from the lower member 3, it is bent as shown by a chain line in FIG. But that doesn't happen. Lower member 3, even going to receive pressing force from the welding main rib 33b, melts allowance _{h 1} of the fusion bonding main rib 33b ₂ facing the flange piece 25, welding main rib 33b ₁ that faces the protruding piece 261 because of lower than the melting bill h ₁ (Fig. 4), the welding for the main rib 33b does not reach the collar piece 25 is the beginning (b in FIG. 8). Since the height of the welding main rib 33b ₂ facing the collar piece 25 is lower than the height of the welding main rib 33b ₁ facing the overhanging piece 261, the distance between the welding main rib 33b and the collar piece 25 Leave ε. Therefore, the collar piece 25 is not deformed.
Thereafter, a further vibration welding shown in FIG. 8 (c), already remaining melted allowance h ₁ of the fusion bonding main rib 33b that is melted is melted by frictional energy at the projecting pieces 261, provide a more robust weld To do. At the same time, by joining the welding main rib 33b ₂ and Tsubahen 25 facing the flange piece 25, a portion thereof is melted by frictional energy, thereby the joint portion is welded. Welding of the collar piece 25 and the welding for the main rib 33b, since the melting bill h ₁ is small, not enough to cause trouble to deform the collar piece 25. Protruding piece 261 and the joint portion of the welding main rib 33b, i.e. a large partial welding of melted margin h _1, it plays a major role in the integral reinforcement of the upper member 2 and lower member 3. The welding at the part of the flange piece 25 and the main rib 33b for welding has a strong connection between the upper member 2 and the lower member 3, but after the commercialization, it plays an integral role in which the mouth is not opened carelessly. Bear.

More, according to the distance L between adjacent Yaguratai 26, FIG. 9 (a) and 9 welding main rib 33b (welding rib 33) as (b) a continuous its melting allowance h ₁ It is more preferable to change the speed. 9 (b), in place of FIG. 8 (b), stepped in accordance with melted allowance h ₁ of the welding main rib 33b moves away from the welding main rib 33b ₁ opposite the overhanging piece 261 adjacent It is provided to be low. That is, the distance from the welding main rib 33b ₁ for welding main rib 33b is opposed to the projecting pieces 26, reference numeral _{33b 21,} stepwise smaller melt allowance of solution wearer main rib as shown by reference numeral _{33b 22} To do.
Further, in FIG. 9 (b), is provided so as to be lower inclined with distance from the welding main rib 33b ₁ which melts allowance h ₁ of the welding main rib 33b is opposed to the projecting pieces 261 adjacent . Since it will be easy to bend, if it leaves | separates from the housing 26, it is the meaning to weld firmly by making it weld sequentially from the site | part which is hard to bend. Further, as long provided so as to be lower as the distance from the welding main rib 33b ₁ which melts allowance h ₁ of the fusion bonding main rib 33b opposite the flange member 25 is opposed to the projecting pieces 261 adjacent flange pieces 25, At the time of welding the main rib 33b for welding to the overhanging piece 261, heat is continuously transmitted from the vicinity of the overhanging piece 261, and not only the overhanging piece 261 that is easily subjected to pressure but also the pressure away from the overhanging piece 261. The main rib 33b for welding can be surely melted even on the hook piece 25 which is difficult to be applied.

  As described above, focusing on the welding main rib 33b, the mechanism in which the upper member 2 and the lower member 3 are integrated by welding the welding rib 33 to the flange piece 25 and the overhanging piece 261 has been described. In the embodiment, a welding sub-rib 33a which is the welding rib 33 is also provided on the outer side (outermost side). The welding secondary rib 33a is provided so as to seal along the lower edge of the standing wall portion 22 when integrated with the inner flange 2b.

Although the welding secondary rib 33a and the welding main rib 33b may have the same shape, the welding secondary rib 33a here is the welding rib 33 facing the overhanging piece 261 and the flange piece 25 as shown in FIG. the melting bill h _1, is slightly smaller than that of the welding for the main rib 33b. The welding main rib 33b becomes the main force of welding integration that firmly integrates the upper member 2 and the lower member 3, while the welding secondary rib 33a has a sealing function.
In the spoiler 1 of this two-tone color specification, since a masking process or the like is required, the subsequent coating is troublesome, and the upper member 2 and the lower member 3 are first coated. However, when welding is performed after painting, the coating of the welded portion is scraped. The welded portions of the upper member 2 and the lower member 3 are exposed on the surface of these members, for example, synthetic resin such as ABS resin. In the exposed portion, the solvent enters when the vehicle is washed, and the synthetic resin portion is deteriorated, so that the welding strength is lowered. In this embodiment, in order to prevent this, a welding sub-rib 33a is added in addition to the welding main rib 33b. A welding sub-rib 33a is provided on the entire circumference along the lower edge of the standing wall 22 by welding and integration with the inner flange 2b (the flange piece 25 and the overhanging piece 261). When the welding secondary rib 33a is welded to the inner flange 2b, the welding main rib 33b which seals along the lower edge 22a of the standing wall 22 and becomes the main force of welding integration of the upper member 2 and the lower member 3 is provided. Protect from solvents.

Further, a welding auxiliary rib 33c is provided inside the welding main rib 33b. The welding auxiliary ribs 33 c are formed intermittently and are provided at locations near the standing pieces 262 of the respective housings 26. Since it is close to the upright piece 262, it is firmly supported by this. Therefore, the spoiler in which the rib height of the welding auxiliary rib 33c is increased (FIG. 5), and the upper member 2 and the lower member 3 are more firmly integrated by the welding of the welding auxiliary rib to the protruding piece 261. Build one.
In addition, in FIG. 7, the code | symbol 37 shows the stopper part which prevents the collar piece 25 falling down at the time of welding by the welding rib 33. FIG. In the drawings other than FIG. 7, illustration of the stopper portion is omitted. In this embodiment, as shown in FIGS. 1 to 8, the upper member 2 is arranged on the upper side and the lower member 3 is arranged on the lower side, and the spoiler in which both are welded and integrated is used. It is also possible to arrange a spoiler in which the upper member and the lower member are integrated by welding the rib 3 to the flange piece and the overhanging piece.

  Since the spoiler 1 configured in this manner is made by combining the upper member 2 and the lower member 3, the spoiler 1 is freed from problems such as an increase in cost and restrictions on design freedom, which are problems with blow-molded products. . Additional functions such as built-in antenna and wiper storage, and two-tone color specifications can be easily accommodated. At the stage shown in FIG. 2, the spoiler 1 incorporates an antenna, and a stopper 5 that is attached to the back door 42 near the roof end 41 can be assembled using the through hole 31 of the lower member 2.

And even if it is the two-pieces spoiler 1, it is not necessary to provide a tall standing part by providing the inner flange 2b, so that stable vibration welding can be performed. Standing part k ₁ bug becomes poor welding collapsed in Figure 11 to resolve. By providing the inner flange 2b (the flange piece 25 and the overhanging piece 261) protruding inward from the inner wall surface 22b near the lower edge of the standing wall portion 22, the inner flange is used as a welding surface of the welding rib 33. As a result, it is possible to reduce the standing part k ₁ in FIG. 11, it becomes possible to further eliminate the standing portion k ₁ provided the bonding ribs 33 directly to the flat portion 32 as in the present embodiment. On the other hand, at the time of vibration welding in which the upper member 2 and the lower member 3 are pressurized in the joining direction and vibration is applied, the inner flange 2b is bent so as to escape from the pressurization. The problem can be solved by forming the casing 26 that is bent at the tip end portion 261 a of the protruding piece 261 and further extends the standing piece 262 and is coupled to the upper wall portion 21. Since the standing piece 262 firmly supports the pressurization in the joining direction at each housing portion 26, the welding strength between the welding rib 33 and the overhanging piece 261 is increased. The through-hole u of the housing 26 that is difficult to form due to the provision of the standing piece 262 is also formed by a slide mold or the like by arranging the housing 25 and the housing 26 alternately. Manufacturing becomes possible.

Moreover, than melt allowance _{h 12} of the welding rib 33 which faces the flange pieces 25, by setting a high melt allowance _{h 11} of the welding rib 33 which faces the projecting pieces 261, each have support of Tatsuhen 262 Since it is firmly welded at the location of the casing 26, the upper member 2 and the lower member 3 can be integrated firmly with a very reasonable structure. A pressure load is not applied to the portion of the support piece 25 such as the standing piece 262 during vibration welding. Furthermore, it melts allowance h ₁ of the welding rib 33 which faces the flange pieces 25 becomes lower as the distance from the welding rib 33 which faces the adjacent protruding tab 261, the welding from the less flexible portion of the flange piece And can be firmly welded. Further, when the welding rib 33 is welded to the flange piece 25 and the overhanging piece 261, heat is continuously transmitted from the vicinity of the overhanging piece 261, and the hook piece 25 that is not easily applied with pressure away from the overhanging piece 261 is also surely received. The welding rib 33 is melted.

The coating range of the upper member 2 of the present embodiment of the two-tone color specification is the range indicated by the arrow in FIG. 6 (b) for the upper member 2 in FIG. Since it is in the range shown, it becomes easier to paint and leads to cost reduction. Although the two-tone spoiler 1 that is welded after painting has been taken up because of problems such as masking, the present invention is not limited to the two-tone color specification. For example, if as shown in FIG. 6 (b), not be a two-tone specification, is because it is very difficult to paint the inside gap of the standing portion k ₁ after the welding of both the upper member 2.

  Furthermore, the exposed portion of the upper member 2 whose paint has been scraped off by welding of the welding main rib 33b and the inner flange 2b may be attacked and deteriorated by a solvent at the time of car washing, and the welding strength may be reduced. Then, the welding auxiliary rib 33a demonstrates its power to prevent the welding strength from being lowered. Since the welding secondary rib 33a seals along the lower edge 22a of the standing wall portion 22 by welding integration with the inner flange 2b (the flange piece 25 and the overhanging piece 261), a solvent is used at the seal portion formed by the welding secondary rib 33a. Can be prevented from entering inside. In this spoiler, since the solvent and the like at the time of washing the vehicle is stopped here, the exposed main portion 33b is firmly welded so that the exposed portion where the paint is shaved is not subjected to the solvent attack. Thus, this spoiler 1 exhibits a number of excellent effects in terms of quality and cost.

The present invention is not limited to those shown in the above embodiments, and various modifications can be made within the scope of the present invention depending on the purpose and application. Upper member 2, inner flange 2 b, upper wall portion 21, standing wall portion 22, collar piece 25, housing 26, overhanging piece 261, standing piece 262, lower member 3, flat portion 32, welding rib 33, rib height The shape, size, number, etc. of h, melting allowance h _{1 and the} like can be appropriately selected according to the application.

It is the disassembled perspective view with one form of the spoiler of this invention. FIG. 4 is an explanatory cross-sectional view illustrating a state in which a cross section taken along line IV-IV of the upper member in FIG. 1 and a cross section taken along line VV of the lower member. FIG. 3 is an explanatory sectional view of a spoiler formed by welding and integration of an upper member and a lower member in FIG. 2. FIG. 3 is an enlarged perspective view of the casing and the periphery of the flange piece according to the upper member facing the welding rib of the lower member in FIG. 2. FIG. 4 is an enlarged vertical view around the housing of FIG. 3. (A) is explanatory drawing which shows the range which paints around a housing | casing, (b) is explanatory drawing which shows the coating range of the site | part corresponding to (b) by the prior art of FIG. FIG. 7 is an enlarged vertical cross-sectional view of the collar piece region. It is explanatory sectional drawing showing the relative positional relationship of the welding rib in a welding process, a piece, and a housing. It is explanatory sectional drawing showing the relative positional relationship of this welding rib in the welding process using the welding rib of the other aspect different from FIG. 8, a collar piece, and a housing. It is explanatory sectional drawing of a prior art. It is explanatory sectional drawing of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spoiler 2 Upper member 2b Inner flange 21 Upper wall part 22 Standing wall part 22b Inner wall surface 25 Collar piece 26 Housing 261 Overhang piece 262 Standing piece 3 Lower member 33 Welding rib 33a Outermost welding rib (welding subrib , Welding ribs)
33b Welding main rib (welding rib)
33c Welding auxiliary rib (welding rib)
h rib height _{h 1,} h _11, h ₁₂ melted fee

Claims (6)

A synthetic resin spoiler in which the upper member and the lower member are welded and integrated,
An upper member that is bent from the outer peripheral portion of the upper wall portion and is extended downward, has a hook-shaped flange piece projecting inward from an inner wall surface near the lower edge of the standing wall portion, and a lower portion of the standing wall portion. A casing that forms a flange-like protruding piece that protrudes inward from the inner wall surface near the edge, is bent at the tip portion of the protruding piece, and further extends as a standing piece and is coupled to the upper wall section; Are alternately disposed along the lower edge of the standing wall portion, and on the upper surface side of the lower member, a welding rib is provided at a position opposite to the flange piece and the overhanging piece, A spoiler wherein the upper member and the lower member are integrated by welding to the overhanging piece. The upper member is disposed on the lower side as the lower member, the lower member is disposed on the upper side as the upper member, and the upper member and the lower member are integrated by welding the rib to the flange piece and the overhanging piece. The spoiler according to claim 1, wherein The spoiler according to claim 1 or 2, wherein the flange piece and the projecting piece are formed into an inner flange that is continuously integrated, and a lower surface thereof is flattened. The spoiler according to any one of claims 1 to 3, wherein a melting allowance of the welding rib facing the protruding piece is set higher than a melting allowance of the welding rib facing the flange piece. The said welding rib is provided so that the welding allowance which concerns on the welding rib which opposes the said flange piece may become low as it leaves | separates from the welding rib which opposes the overhanging piece which adjoins. The spoiler according to item. On the upper surface side of the lower member, a plurality of the welding ribs are provided apart from each other in a direction intersecting with the extending direction of the welding ribs, and the outermost welding ribs are connected to the flange piece and the overhanging piece. The spoiler according to claim 1, wherein the spoiler is sealed along the lower edge of the standing wall portion by welding.

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