JPH0547023Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a roof structure of a bus, and more specifically to a structure on both sides of the roof.

(Prior art) Conventional bus roof structure (for example,
71420), as shown in Fig. 4, each of the ceiling ribs 41 and the roof skin 42 joined thereon by spot welding a is provided with a vertical wall at the top of the side window at both ends of the roof. Welding to thread 43 lol
They were bent so that they could be connected by. In addition, in FIG. 4, 3 is a window glass, 5 is a wind pillar, and 8 is a rain gutter.

(Problems to be Solved by the Invention) However, in the conventional bus roof structure, bending the plurality of ceiling ribs 1 and the roof outer panels 42 at both ends requires a significant amount of processing time and processing cost. I need. In particular, since there are a plurality of ceiling ribs made of channel-shaped members or square pipes, it is not easy to bend each of them uniformly and sharply with high precision. In addition, in the case of a bus, the outer roof panels are long in the longitudinal direction of the vehicle body, so bending both ends thereof is not easy.

Further, since the roof outer panel 42 is joined to the outer surface of the window upper stringer 43 by spot welding a, the welding distortion generated during welding is visible from the side and is unfavorable in terms of appearance.

The present invention was devised in view of the above-mentioned problems of the prior art, and by configuring the curved portions on both sides of the roof using window stringers, the bending of both ends of the ceiling ribs and roof outer panels is achieved. This eliminates the need for machining and reduces the width dimension of the roof outer panels, improving workability and economic efficiency.In addition, the spot welds for joining the roof outer panels are placed on the top of the roof so that welding distortion and other joint marks are visible from the side. The purpose of the present invention is to provide a roof structure for a bus that improves its appearance at the same time.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the solution means of the present invention is provided by providing an upper end portion of a plurality of wind pillars, which are disposed on both sides of the roof of the vehicle body and run longitudinally in the longitudinal direction of the vehicle body, and have a cross-sectional shape. A substantially horizontal lower joint surface for welding them at appropriate intervals in the longitudinal direction of the vehicle body, and a curved portion of the roof side extending upward from the outer end of the lower joint surface portion and toward the inside of the vehicle body. An outer curved surface part that is curved in shape to form a roof side part; an upper joint surface part that hangs downward from the upper end of the outer curved surface part; and a part from the lower end of the upper joint surface part to the inner end of the lower fitting surface part. It is provided with a pair of left and right window stringers formed in a closed cross-sectional shape and consisting of an inner side surface connected to the window. In addition, each is made of a channel or square pipe that extends in the vehicle width direction and is gently curved in a shape that matches the cross-sectional shape of the center part of the roof, and both ends of each are welded to the upper joint surface of the left and right window stringers. The vehicle is equipped with a plurality of ceiling ribs that are joined together and suspended horizontally between the left and right window stringers at appropriate intervals in the longitudinal direction of the vehicle body. moreover,
and, on each of the ceiling ribs, both ends are laid so as to reach the upper ends of the outer curved surfaces of the left and right window stringers, and the upper surface of the outer curved surface of each ceiling rib and the window top are laid. It shall be provided with a substantially flat roof outer plate joined by spot welding to the upper surface of the upper end of the stringer.

(Function) With the above structure, the window stringer with a closed cross section forms the roof side part, and the outer curved surface part of the window stringer forms the curved part of the roof side part, so the groove There is no need to uniformly and sharply bend both ends of a plurality of ceiling ribs made of shapes or square pipes, and there is no need to bend both ends of the roof outer panel.

In addition, the roof skin can be joined on the top surface of the upper edge of the outer curved surface of the window stringer, reducing the width dimension and moving the spot welding joint trace from the side to the roof top surface where it cannot be seen. .

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

<First Embodiment> In FIGS. 1 and 2, the roof structure of the bus body 1 of the present embodiment has left and right roofs installed on both sides of the roof 2 of the vehicle body 1 so as to extend vertically in the longitudinal direction of the vehicle body. A pair of window stringers 14 and these window stringers 14,1
A plurality of ceiling ribs 16 are horizontally hung between the roof ribs 16, and a roof outer panel 17 is laid on the ceiling ribs 16 and on the upper surface of the upper end of the window stringer 14 and joined by spot welding a. It consists of

The window stringer 14 forms a vertical welded joint member that connects the ceiling rib 16 and the wind pillar 5, which intersect at an intersection angle α of approximately 100 degrees, and is formed by bending welding or welding a single steel plate. It is manufactured by welding together a plurality of steel plates, and its cross-sectional shape is such that the upper ends of a plurality of vertical wind pillars 5 are joined by welding w at appropriate intervals in the longitudinal direction of the vehicle body. A substantially horizontal lower joint surface portion 14a, and an outer curved surface portion that curves upward from the outer end of the lower joint surface portion 14a and toward the inside of the vehicle in a shape that matches the bending of the roof side portion to form a roof side portion. 14c, an upper joint surface portion 14b that hangs downward from the upper end of the outer curved surface portion 14c, and an inner surface portion 14d that extends obliquely from the lower end of the upper joint surface portion 14b to the inner end of the lower joint surface portion 14a. It is formed into a closed cross-sectional shape consisting of. Lower joint surface portion 14a and outer curved surface portion 14
A recessed step portion 14e is formed at the intersection with c. A vertically long rain gutter 8 is fixed to the lower part of the outer curved surface part 14c by a stopper 8a (hidden by the exterior plate 7), and the back surface of the rain gutter 8 and the stepped part 14e are fixed. A window glass 3 is fixed with a packing 4 in between.

The ceiling ribs 16 are made of channel members or square pipes that extend in the vehicle width direction and are gently curved to match the cross-sectional shape of the center portion of the roof.
An appropriate number of bridges are placed horizontally at 14 intervals,
Both end portions are fitted to the upper joint surface portions 14b of the left and right window stringers 14 by welding w.

The roof outer panel 17 has both end portions on the ceiling ribs 16 at the outer curved portions 14c of the window stringers 14, 14 on both sides.
The outer curved portion 14c and the upper surface of the ceiling rib 16 are joined by spot welding a.

According to the roof structure 10 of this embodiment, in addition to the points mentioned in the section of the effect of the invention described later, the torsional bending strength of the vehicle body 1 is further improved by the inner side surface portion 14d of the window upper stringer 14. It is also effective in that there is a large space for arranging air conditioner ducts and the like inside the window stringer 14.

<Second Embodiment> As shown in FIG. 3, the roof structure 20 of the bus body 1 of this embodiment is different from the first embodiment and the window longitudinal member 2.
They are completely the same except for the configuration of 4.

The window upper stringer 24 has a lower joint surface portion 26a to which the vertical wind pillar 5 is connected by welding w.
, an upper joint surface portion 24b to which the horizontal ceiling ribs 16 are connected by welding w, an outer curved surface portion 24c for connecting the upper and lower joint surfaces 24a and 24b, and an inner surface portion 24d bent at a substantially right angle. It is a hollow molded body composed of. A step portion 24e for attaching the window glass 3 is formed at the intersection of the outer curved surface portion 24c and the lower joint surface portion 24a.

According to this embodiment, the interior of the vehicle becomes larger due to the bent shape of the inner side surface portion 24d, and the space utilized for the interior is increased, which is an effect not found in the first embodiment.

(Effects of the invention) As described above, according to the bus roof structure of the invention, the window stringer with a closed cross section constitutes both sides of the roof, and the outer curved part of the window stringer forms both sides of the roof. In order to form a curved part at the top of the window, there is no need to uniformly and sharply bend both ends of the plurality of ceiling ribs suspended horizontally between the pair of left and right window stringers, and the ceiling ribs This eliminates the need to bend both ends of the roof outer panels laid on the window stringers, and the width of the roof outer panels can be reduced, improving workability and strength, and reducing processing costs. , material costs can be significantly reduced.

In addition, the nozzle welding of the roof outer panels is performed on the upper surface of the roof, and joint marks such as spot welding distortions are no longer visible from the sides, so the appearance can be improved.

[Brief explanation of the drawing]

Fig. 1 is a left side view of a bus adopting the roof structure of the present invention, Fig. 2 is a sectional view of the first embodiment taken along line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along line A-A in Fig. 1. - It is a sectional view concerning a 2nd example of A section line. FIG. 4 is a sectional view showing the roof structure of a conventional bus. 1...Vehicle body, 2...Roof, 5...Wind pillar, 14, 24...Window stringer, 14a, 24a
... Lower joint surface portion, 14b, 24b ... Upper joint surface portion, 14c, 24c ... Outer curved surface portion, 14
d, 24d...Inner side part, 16...Ceiling rib, 1
7... Roof outer panel.

Claims (1)

[Scope of Claim for Utility Model Registration] The upper ends of wind pillars, which are disposed on both sides of the roof of a vehicle body and run longitudinally in the longitudinal direction of the vehicle body, and each have a plurality of cross-sectional shapes, are joined by welding at appropriate intervals in the longitudinal direction of the vehicle body. a substantially horizontal lower joint surface for the roof; and an outer curved surface that curves upward from the outer end of the lower joint surface and toward the inside of the vehicle in a shape that matches the bending of the roof side to form the roof side. A pair of left and right sides formed in a closed cross-sectional shape, consisting of an upper joint surface portion that hangs downward from the upper end of the outer curved surface portion, and an inner surface portion that extends from the lower end of the upper joint surface portion to the inner end of the lower joint surface portion. Each of these consists of a channel or square pipe that extends in the vehicle width direction and is gently curved to match the cross-sectional shape of the center of the roof, with both ends attached to the left and right window stringers. A plurality of ceiling ribs are joined by welding to the upper joint surface and are hung horizontally at appropriate intervals in the longitudinal direction of the vehicle between the left and right window stringers, and both ends are attached to each of the ceiling ribs. It is laid so as to reach the upper end of the outer curved surface of the left and right window upper stringers, and is joined by spot welding to the upper surface of each ceiling rib and the upper surface of the upper end of the outer curved surface of the window upper stringer. A roof structure for a bus, characterized in that it comprises a substantially flat roof outer plate.