JP2019200897A - Vehicle housing - Google Patents

Abstract

To provide an elongated vehicle housing which inhibits misalignment of mutual positions of a housing and a cover during welding.SOLUTION: An elongated vehicle housing (1) includes: a housing (30); and a front cover (40) integrally welded to a front surface of the housing (30) and is configured that a positioning protruding part or a positioning recessed part (42), which corresponds to a substantially longitudinal center position of the housing (30) and protrudes or is recessed in a housing attachment direction, is provided at a substantially longitudinal center of the front cover (40). The front cover (40) and the housing (30) can engage at the substantially center position to inhibit misalignment of mutual positions.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle casing, and more particularly to a vehicle casing that defines a chamber by welding each part.

  As a vehicle component, a vehicle casing such as a vehicle lamp that defines a chamber or a lamp chamber with a resin component is formed by welding a cover to the front surface of the housing. First, the conventional welding process will be described.

  12A and 12B are explanatory diagrams illustrating a hot plate welding process in which the housing 130 and the cover 140 are hot plate welded. In the hot plate welding, the members at the welding target portions of the workpiece are heated and melted by the hot plate, and are joined and integrated.

  The housing receiving jig 150 is for mounting the housing 130 as the first workpiece, and a concave portion 152 corresponding to the outer shape of the housing 130 is formed on the upper surface.

  The cover holder 160 arranged to face the housing receiving jig 150 is for holding the cover 140 which is the second workpiece, and the cover 140 is provided on the lower surface which is the facing surface of the housing receiving jig 150. A concave portion 162 is formed in accordance with the shape of the front surface 142.

  The cover 140 is formed with a seal leg 141 protruding downward over the entire circumference, and a flange portion 131 is formed over the entire circumference in the opening of the housing 130.

  As shown in FIG. 12A, first, the housing 130 is mounted on the housing receiving jig 150, and the cover 140 is mounted on the cover holder 160, respectively. The seal leg 141 of the cover 140 to be welded and the flange portion 131 of the housing 130 are arranged to face each other. A suction mechanism (not shown) is provided on the bottom surface of the concave portion 162 of the cover holder 160, and the cover 140 is stably held by the cover holder 160 by this suction mechanism. In a state where the flange portion 131 is placed on the upper wall 154 of the housing receiving jig 150, the housing 130 is held by the housing receiving jig 150 (see FIG. 12-1 (b)).

  Next, the hot plate 170 moves between the housing 130 and the cover 140 (see FIG. 12-1 (c)). Further, the cover holder 160 is lowered, the housing receiving jig 150 is raised, and approaches the hot plate 170 (see FIG. 12-1 (d)). The seal leg 141 and the flange portion 131 are held in the state of being close to the hot plate 170, and the tip portion of the seal leg 141 and the upper surface portion of the flange portion 131 are melted by the thermal energy of infrared rays.

  Thereafter, the cover holder 160 is raised, the housing receiving jig 150 is lowered, and the hot plate 170 is removed from between the cover 140 and the housing 130 (see FIG. 12-2 (e)).

  Next, the cover holder 160 is lowered and the seal leg 141 comes into contact with the flange portion 131. The front end portion of the seal leg 141 on the surface to be welded and the upper surface portion of the flange portion 131 are bonded to each other (see FIG. 12-2 (f)).

  The suction by the suction mechanism (not shown) is released, the cover holder 160 is raised, and the vehicle casing 101 in which the cover 140 and the housing 130 are integrated is taken out (see FIG. 12-2 (g)).

  The above is the welding process, but it is important that the housing and the cover are integrated at a desired position in the vehicle casing. For this reason, both are aligned when the housing and the cover are mounted.

  The concave portion 152 of the housing receiving jig 150 and the concave portion 162 of the cover holder 160 are formed in accordance with the shapes of the housing 130 and the cover 140, respectively, but have a slight gap for easy attachment / detachment. Conventionally, as shown in FIG. 13A, in each recess (52, 62), the cover 140 and the housing 130 are moved to the wall on one side to perform alignment. Moreover, in patent document 1, the positioning convex part is provided in the front four directions four places of a housing as a structure which aligns both without deviation.

  By performing the alignment in this way, the cover 140 and the housing 130 can be welded at the desired position A.

JP-A-10-308103

  However, in a long product, for example, 800 mm or more, or a product that requires three or more multi-point gates at the time of injection molding, molding shrinkage is significant, and the longitudinal dimension often varies. In the structure of Patent Document 1, it is difficult to accurately form positioning convex portions provided at four locations in four directions at desired positions.

  Further, when the alignment is performed by moving to one side, all the errors are caused by one side. On the one hand, it can be arranged at the desired position A, but on the other hand, the deviation d (see FIG. 13B) between the desired position A and the actual position A ′ of the cover 140 and the housing 130 is the worst tolerance. It will be out of range.

  In view of such circumstances, an object of the present invention is to provide a vehicle casing in which a displacement between a housing and a cover at the time of welding is suppressed.

  In order to achieve the above object, according to an aspect of the present invention, there is provided a long vehicle casing including a housing and a front cover that is welded and integrated with a front surface of the housing. At the approximate center of the direction, there is provided a positioning convexity or a positioning concave that protrudes or sinks toward the housing mounting direction, corresponding to the substantially central position in the longitudinal direction of the housing. .

  According to this aspect, the front cover and the housing can be disposed at a substantially central position. When the two are brought close to the end in the longitudinal direction and aligned, molding errors are concentrated on the end opposite to the aligned side, and the possibility that the misalignment amount exceeds the allowable range increases. By forming the convex portion at the approximate center and aligning at the approximate center, the error can be distributed to both end portions in the longitudinal direction, and displacement of the mutual position as a whole can be suppressed.

  Preferably, the positioning convex portion or the positioning concave portion is disposed at a position corresponding to a substantially center in the longitudinal direction of the housing, and is provided on a positioning jig that is movable with respect to the front cover. It shall be engaged with the combination concave part or the engaging convex part.

  The positioning convex portion or the positioning concave portion engages with the engaging concave portion or the engaging convex portion, so that the mutual positions of the cover and the housing can be adjusted at the center.

  Rather than providing a concave portion directly on the housing, the concave portion on the housing side is provided on the fixing jig, so that the positioning can be performed only by forming the convex portion on the front cover side, and the influence on the appearance can be suppressed.

  Preferably, the positioning convex portion or the positioning concave portion has a shape that increases in thickness or depth in the housing mounting direction.

  According to this aspect, when aligning the front cover with the convex portion, it is easy to engage the front cover with the concave portion on the other side, and it is easy to extract after engagement. Since the thickness increases toward the mounting position, it is less conspicuous than the reverse configuration, and the influence on the appearance can be suppressed.

  Preferably, the convex portion for positioning or the concave portion for positioning is formed on the back side of the front side which is difficult to be seen when the front cover is viewed from the front.

  According to this aspect, since a convex part or a recessed part is formed in the location which is hard to be visually recognized, the influence on appearance can be kept to the minimum.

  As is clear from the above description, according to the present invention, it is possible to provide a vehicle casing in which the positional displacement between the housing and the cover during welding is suppressed.

It is a perspective view of the case for vehicles, a holder, and a receiving jig concerning a 1st embodiment. It is a front view of FIG. FIG. 3 is a front vertical end view of FIG. 2. It is a right view of FIG. It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. It is explanatory drawing which shows engagement of a positioning convex part and a moving tool. It is the C section enlarged view of FIG. It is a right view of the state in which the cover is mounted on the cover holder and the housing is mounted on the housing receiving jig. It is explanatory drawing which shows the relationship between a user's eyes | visual_axis in the state mounted in the vehicle, and a mounting position. It is a modification. It is explanatory drawing which shows the welding process of a housing and a cover. It is explanatory drawing which shows the welding process of a housing and a cover. It is explanatory drawing which shows the shift | offset | difference of arrangement | positioning of a housing and a cover.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The embodiments do not limit the invention but are exemplifications, and all features and combinations described in the embodiments are not necessarily essential to the invention.

(Embodiment)
FIG. 1 is a perspective view of a housing 30 and a cover 40 constituting a vehicle casing 1 according to an embodiment of the present invention, and a housing receiving jig 50 and a cover holder 60 for mounting them (FIG. 12-1). Corresponding to (a)). 2 is a front view of FIG. 1, FIG. 3 is a front vertical end view of FIG. 2, FIG. 4 is a right side view of FIG. 1, FIG. 5 is an enlarged view of part A, and FIG. .

  As shown in FIGS. 1 to 6, the vehicle casing 1 includes a housing 30 and a cover 40. The vehicle housing 1 is a high-mount stop lamp, is a long product that is long in the left-right direction, and is mounted on the upper part of the back of the vehicle. For this reason, the housing 30 and the cover 40 are formed long in one direction. The housing 30 has a box shape having an opening on one side and a space inside, and a transparent cover 40 is welded and integrated on the opening surface to form the vehicle casing 1 having a lamp chamber.

  The cover 40 and the housing 30 are arranged to face each other, and the light cover 40 with less unevenness is arranged on the upper side, but the arrangement may be reversed.

  The housing 30 is an ABS-based resin molded product, and a flange portion 31 is formed on the entire periphery of the opening. A concave portion 52 is formed on the upper surface of the housing receiving jig 50 according to the outer shape of the housing 30, and the housing 30 is mounted on the concave portion 52. With the housing 30 mounted on the housing receiving jig 50, the flange portion 31 is placed on the upper wall 54 of the upper edge of the housing receiving jig 50.

  The cover 40 is a translucent acrylic resin product, and seal legs 41 projecting downward are formed on the lower surface over the entire circumference. The outer wall on the front side of the seal leg 41 extending in the longitudinal direction has a cutout portion 43 whose corners are cut obliquely over the entire length except for the central portion, and the portion left without being cut is a positioning convex portion 42. Is forming.

  As shown in FIG. 5, the positioning convex portion 42 has a triangular prism shape and projects downward and forward. The front wall and the bottom wall that remain without being cut off constitute two surfaces, and the cut portion forms a side surface, and the thickness increases toward the lower side and the front side. A convex portion is relatively formed by denting the periphery, and the positioning convex portion 42 is configured not to protrude from the lower wall or the front wall of the seal leg 41.

  The positioning convex portion 42 is formed for alignment with the housing 30. When a convex part is added to the seal leg 41, the convex part is formed so as to protrude from the seal leg 41. As in the present embodiment, by forming the convex portion relatively by cutting the periphery, the influence on the appearance of the convex portion formation can be minimized. Since the positioning convex portion 42 is not a convex portion protruding from the wall, it is easy to form by the injection molding.

  Further, the positioning convex portion 42 protrudes downward, but has a shape that does not protrude from the lower surface of the seal leg 41, and has a structure that does not interfere with the welding of the cover 40 and the housing 30. In the present embodiment, the positioning convex portion 42 is formed on the front side of the cover 40, but may be formed on the rear side.

  An alignment jig 80 is disposed in the center of the front surface of the cover holder 60 in the longitudinal direction. The alignment jig 80 includes a fixing tool 81 and a moving tool 82, and the fixing tool 81 is fixed at the center in the longitudinal direction of the cover holder 60. In this embodiment, the alignment jig 80 is fixed to the cover holder 60, but may be fixed to a peripheral device or the like as long as it does not interfere with welding.

  A moving tool 82 is held on the lower surface of the fixing tool 81. The moving tool 82 can slide in the front-rear direction with respect to the fixing tool 81 by an air cylinder (not shown).

  A slope 84 corresponding to the oblique side of the notch 43 is formed on the back surface of the fixture 81, and an engagement recess 83 is formed in the center thereof. The engaging concave portion 83 has a width equal to the width of the positioning convex portion 42 and a depth equal to the thickness of the positioning convex portion 42, and is formed to engage with the positioning convex portion 42. With the cover 40 mounted on the cover holder 60, the positioning convex portion 42 engages with the engaging concave portion 83 of the moving tool 82.

(Mutual positioning of cover and housing)
The determination of the mutual position of the cover 40 with respect to the housing 30 will be described in detail. FIG. 7 is an explanatory view showing the process of engaging the cover 40. In order to clarify the arrangement of the positioning convex portion 42 and the moving tool 82, the fixing tool 81 is not shown. FIG. 8 is an enlarged view of part C of FIG. FIG. 9 is a right side view of a state in which the cover 40 is mounted on the cover holder 60 and the housing 30 is mounted on the housing receiving jig 50.

  First, as shown in FIG. 7A, the cover 40 is mounted on the cover holder 60 in a state where the moving tool 82 has moved to the back surface (position in FIG. 4). Although the moving tool 82 projects to the back side on the lower surface of the cover holder 60, the seal leg 41 is formed to be slightly smaller than the outer wall of the cover 40, so that it does not interfere with the mounting of the cover 40.

  The vertical arrangement of the moving tool 82 is adjusted so that the moving tool 82 engages with the positioning convex portion 42 of the cover 40 mounted on the cover holding tool 60 in a state where the moving tool 82 moves in the back direction.

  The arrangement of the moving tool 82 in the longitudinal direction is a position corresponding to the center position of the housing 30 in the longitudinal direction. The cover 40 is mounted on the cover holder 60, and the positioning convex portion 42 engages with the engaging concave portion 83, whereby the relative position in the longitudinal direction of the cover 40 with respect to the housing 30 is determined. It is arranged at a central position in the longitudinal direction.

  With the cover 40 mounted on the cover holder 60, the positioning convex portion 42 engages with the engaging concave portion 83 of the moving tool 82 (see FIG. 7B). When the mounting position of the cover 40 is determined by the positioning convex portion 42, the cover 40 is fixed by a suction mechanism (not shown), and the moving tool 82 moves forward (position in FIG. 9) so as not to disturb the welding with the housing 30 (FIG. 9). 7 (c)).

  Thereafter, the hot plate moves between the cover holder 60 and the housing receiving jig 50 to start welding, and the cover 40 is welded to the housing 30 to form the vehicle casing 1. (Steps of FIGS. 12-1 (c) to 12-2 (g)).

  Since the cover 40 is fixed by a suction mechanism (not shown), the relative positional relationship in the longitudinal direction with the housing 30 remains fixed. The positioning projection 42 is engaged with an alignment jig 80 corresponding to the longitudinal center position of the housing 30, whereby the cover 40 is disposed at the longitudinal center position of the housing 30, and the cover 40 and the housing 30 are in contact with each other. There is no alignment.

  The housing 30 and the cover 40 are brought into contact with each other, and when the cover 40 is removed from the cover holder 60, a sensor (not shown) detects this, and the moving tool 82 is again set for positioning of the next cover 40. Move backward.

(Function and effect)
When the cover 40 was moved to one of the left and right walls of the cover holder 60 and aligned, all errors such as the dimensional error of the cover 40, the dimensional error of the housing, and the positional deviation from the housing were obtained. Since it is biased to the opposite side of the wall, it may exceed the allowable range of misalignment, resulting in a large quality variation. In particular, when the vehicle casing is long, the dimensional tolerance itself of the cover 40 and the housing 30 is large, and the influence of shrinkage variation due to the air temperature during injection molding is large.

  The cover 40 and the housing 30 can be accurately aligned at the center by the positioning convex portion 42 formed at the center in the longitudinal direction of the cover 40 and the alignment jig 80 disposed at the center position in the longitudinal direction of the housing 30. Since the error can be distributed in half to the left and right, the mutual displacement between the housing 30 and the cover 40 at the time of welding can be suppressed, quality variations are eliminated, and the quality as a vehicle casing is improved. .

  Further, the positioning convex portion 42 is formed only on the cover 40, and the engaging side is formed as the engaging concave portion 83 in the separate positioning jig 80, and the both are aligned, so the housing 30 side has It is not necessary to form a recess, and the influence on appearance can be minimized.

  The positioning convex part 42 is preferably about 3 to 15 mm in width at the longest part, 3 mm to 10 mm in height, and about 0.5 to 2 mm in thickness. The relative positioning with the housing 30 can be performed with high accuracy with an engagement portion that is very small with respect to the dimensions of the cover, and the effect on the appearance is small and the effect is high.

  FIG. 10 is an explanatory diagram showing the relationship between the user's line of sight and the mounting position when the vehicle casing 1 is mounted on the vehicle. As shown in FIG. 10, the vehicle casing 1 is a high-mount stop lamp, and is mounted on the upper back of the vehicle V. The positioning convex portion 42 is formed at a position that becomes the upper surface when mounted on the vehicle. The positioning convex part 42 is formed on the upper surface that is difficult to be visually recognized in a state where the vehicle casing 1 is mounted on the vehicle V, thereby reducing the influence on the appearance of the positioning convex part 42 being formed. Can do.

  Further, when the vehicle V is disposed at a relatively low position (for example, a back lamp) as in the case 1 ′ for the vehicle, the positioning convex portion 42 ′ is preferably formed on the lower surface. By forming the vehicle casing 1 ′ on the rear side of the front side that is difficult to be seen when viewed from the front in the state of being mounted on the vehicle V, that is, on the side opposite to the surface facing the user in the normal state, The impact on appearance can be minimized.

(Modification)
The shape of the positioning convex portion 42 of the vehicle casing 1 according to the above embodiment is merely an example, and various shapes can be used. FIGS. 11A to 11E show modified examples of the positioning convex portion 42.

  As shown in FIG. 11 (a), it is preferable to provide a taper on both sides of the positioning convex portion 42A so as to be easily engaged with the moving tool 82A.

  As shown in FIG. 11B, it is preferable that the notch portion 43B is provided only around the positioning convex portion 42B to reduce the influence on the appearance.

  As shown in FIG. 11C, the positioning protrusion 42C may be formed so as to protrude from the wall without providing the notch.

  As shown in FIG. 11D and FIG. 11E, a concave portion may be provided instead of the convex portion for positioning.

  Each of the moving tools 82A to 82E is formed with an engaging recess (projection) so as to engage with the positioning projection (depression).

  In this embodiment, the how mount stop lamp has been described, but the present invention is not limited thereto, and a housing and a cover are welded to form a chamber or a lamp chamber, a headlamp, a stop lamp, a combination lamp, etc. It can be widely applied to various vehicle casings.

  The preferred embodiments of the present invention have been described above. However, the above-described embodiments and modifications are examples of the present invention, and these can be combined based on the knowledge of those skilled in the art. It is included in the scope of the invention.

DESCRIPTION OF SYMBOLS 1 Vehicle housing | casing 30 Housing 31 Flange part 40 Cover 41 Sealing leg 42 Positioning convex part 43 Notch part 50 Housing receiving jig 60 Cover holder 70 Hot plate 80 Positioning jig 83 Engaging concave part

Claims (4)

A long vehicular housing comprising a housing and a front cover welded and integrated with the front surface of the housing,
At the approximate center in the longitudinal direction of the front cover, there is provided a positioning projection or a positioning recess that protrudes or sinks toward the housing mounting direction, corresponding to the approximate center position in the longitudinal direction of the housing. ing,
A vehicle casing characterized by that. The positioning convex portion or the positioning concave portion is disposed at a position corresponding to substantially the center in the longitudinal direction of the housing, and is an engaging concave portion provided in a positioning jig movable with respect to the front cover. Or engage with the convex part for engagement,
The vehicle housing according to claim 1. The positioning convexity or the positioning concave is a shape that increases in thickness or depth in the housing mounting direction.
The vehicle casing according to claim 1 or 2, wherein the vehicle casing is provided. The positioning convex portion or the positioning concave portion is formed on the back side of the front side which is difficult to be seen when the front cover is viewed from the front.
The vehicle casing according to any one of claims 1 to 3, wherein the vehicle casing is provided.