JP2006123742A - Mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure and a mounting method for vehicle body equipment high in workability without decreasing roof strength. <P>SOLUTION: The mounting structure to mount members (grip 2 and a motor driven storage type mirror) on the roof (1) of an automobile is configured so that mounting screws (7) of the members mounted on the roof (roof panel 1) are engaged with nuts (4) fixed to reinforcing members (3 and 8) for mounting arranged inside the roof (roof panel 1), wherein the reinforcing members (3 and 8) for mounting are secured to a frame member (front roof rail 5) for ahead of the roof, and the frame member (front roof rail 5) for ahead of the roof is fixed to the inside of the roof (roof panel 1). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mounting structure and a mounting method for mounting a vehicle body equipment on a vehicle body, and more particularly to a mounting structure and a mounting method for a member to a cab roof of an automobile.

  As a cab equipment, a grip used for an operator to support the body during cleaning outside the vehicle and a side mirror mounting bracket are attached to the front end of the roof.

  As shown in the perspective view of FIG. 10 and the cross-sectional view of FIG. 11, such equipment is provided with a reinforcing member 30 attached with a welding nut (not shown) on the inner side of the front end 1 f of the roof 1 by, for example, spot welding. A through hole (not shown) is provided at the projected position of the welding nut at the front end 1f, and the equipment, for example, the mounting hole (not shown) and the through hole (not shown) of the work grip 2 are penetrated by a mounting bolt (not shown), and the reinforcing member 30 is not shown. It was attached to the roof panel 1 by being screwed into the welding nut.

  However, the roof 1 to which the reinforcing member 30 is attached has a single sheet structure and the plate thickness is extremely thin. Therefore, even if the equipment, for example, the grip 2 is mounted on the roof 1, the rigidity of the mounting portion is often insufficient, which is a concern for strength.

Further, as shown in FIG. 11, a reinforcing roof rail 550 is assembled by welding over the entire width of the cab in order to give the roof strength immediately after the reinforcing member 30 is attached. . Therefore, the reinforcing member 30 for mounting equipment must be mounted at a position 100 surrounded by a bag shape by the roof front end 1f and the roof rail 50.
In the spot welding machine, for example, a part of the arm of the welding machine is inserted from the hole 200 (see FIG. 10) for storing the speed indicator lamp, and the welding work is performed. This is a so-called “blind operation” in which the object cannot be confirmed because there is no such thing, and only a part of skilled workers must be relied upon.

  As another conventional technique, a technique for attaching a rotary storage type assist grip has been proposed (see, for example, Patent Document 1).

However, the prior art is a technique for attaching a grip to the interior wall of an automobile, and does not solve the above-described problem.
JP 2004-136733 A

  Accordingly, an object of the present invention is to provide a mounting structure and mounting method for vehicle body equipment with high workability without reducing roof strength.

  The vehicle body equipment mounting structure of the present invention is a mounting structure for mounting a member on a roof of an automobile, and a mounting screw (7) for the member (grip 2, transmission retractable mirror) to be mounted on the roof (roof panel 1). Is screwed into a nut (4) fixed to a mounting reinforcing member (3, 8) disposed inside the roof (roof panel 1), and the mounting reinforcing member (3, 8) is a skeleton for the front of the roof. It is fixed to a member (front roof rail 5), and the roof front frame member (front roof rail 5) is fixed to the inside of the roof (roof panel 1) (Claim 1).

  The member to be attached to the roof (roof panel 1) of the automobile is a grip (2) (Claim 2).

  The member to be attached to an automobile roof (roof panel 1) is an electric retractable mirror.

  The mounting structure of the vehicle body equipment of the present invention is such that the reinforcing members (3, 8) for attaching the members (grips 2, electrically retractable mirrors) to be attached to the roof (roof panel 1) are the frame members for the front of the roof (front roof rail 5). And a step of welding and fixing the roof front frame member (front roof rail 5) to which the mounting reinforcing members (3, 8) are welded to the inside of the roof (roof panel 1). , A step of placing and fixing the roof (roof panel 1) welded to the roof front frame member (front roof rail 5) on the frame (6) of the cab, and the member to be attached to the roof (roof panel 1) (grip 2) And a step of screwing a mounting screw of the electric retractable mirror with a nut (welding nut 4) fixed to the mounting reinforcing member (3, 8). .

  In the attachment method for attaching a member to the roof of the automobile, the member to be attached to the roof (roof panel 1) of the automobile is a grip (2).

  In the attachment method for attaching a member to the roof of the automobile, the member to be attached to the roof (roof panel 1) of the automobile is an electric retractable mirror.

  According to the above-described present invention, the mounting screw (7) of the member (grip 2, electric retractable mirror) to be mounted on the roof (roof panel 1) is disposed inside the roof (roof panel 1). The mounting reinforcing member (3, 8) is fixed to the roof front frame member (front roof rail 5), and is screwed into the nut (4) fixed to the reinforcing member (3, 8). Since the front frame member (front roof rail 5) is fixed inside the roof (roof panel 1), the strength of the entire roof is not reduced. That is, the synthesis and strength are significantly improved as compared with the conventional type.

  The significant improvement in rigidity and strength suppresses the occurrence of deformation and the like of the structure, and can maintain high quality over a long period of time.

  The attachment of the attachment reinforcing members (3, 8) to the roof side is spot-welded to the open roof front frame member (front roof rail 5), so-called "blindness", which has been a hindrance to productivity in the past. "Work" becomes unnecessary, and skill is not necessary for the work. Therefore, blind work can be abolished, work accuracy is made uniform, and quality is improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  First, a first embodiment will be described with reference to FIGS. In the first embodiment, the equipment (parts) to be attached to the roof panel 1 is the grip 2 (see FIG. 2, the grip is a known equipment).

  In FIG. 1, when the grip 2 is attached to the roof panel 1, the bottom portion 31 of the grip reinforcing member 3 described later in detail with reference to FIGS. For example, it is attached by spot welding.

The grip reinforcing member 3 will be described with reference to FIGS.
The grip attachment reinforcing member 3 has a bilaterally symmetric shape, includes a front portion 31, a bottom portion 32, and ribs 33 at both left and right ends, and is integrally press-molded.

  As shown in FIG. 4, the front part 31 and the bottom part 32 are continuous, and the cross section (XX cross section in FIG. 3) has a substantially “<” shape. An arrow F in FIG. 4 indicates the front of the cab (vehicle).

  The front portion 31 has a central portion 31a and both sleeve portions 31b whose heights are reduced for weight reduction. As shown in FIG. 5, in order to increase rigidity, the center portion 31a and both sleeve portions 31b A step portion 31c is provided at the boundary portion.

The surface shape of both sleeve portions 31b of the front portion 31 is formed in the roof panel 1 in substantially the same manner as the inner surface of the roof panel 1 at the position where the grip attachment reinforcing member 3 is attached.
The central portion 31a of the front portion 31 is formed in a curved surface so as to have a certain gap from the curved surface of the roof panel 1 to which the reinforcing member 3 is attached.

  Positioning holes 34 a and 34 b are formed in the vicinity of both left and right ends of the bottom portion 32. In the illustrated example, the right hole 34a is formed larger than the left hole 34b.

  A welding nut 4 for fixing the grip 2 is attached to the back surfaces of the left and right sleeve portions 31b. Further, mounting holes 35 are formed in the left and right sleeve portions 31b at positions where the center point of the welding nut 4 is projected.

  Next, with reference to the process diagram of FIG. 6, the process from the cab main assembly process to the attachment of the grip 2 to the cab roof will be described.

First, in step 6-1, the grip reinforcing member 3 is placed at a predetermined position of the front roof rail 5, and the position P1 is spot welded.
Although not shown, a mounting hole for inserting a mounting screw is formed in advance at the projection position of the center point of the welding nut 4 of the grip reinforcing member of the roof panel 1.

In the next step 6-2, the front roof rail 5 is aligned with a predetermined position of the roof panel 1, and the P2 position and the P3 position are sequentially spot welded.
Note that there are a plurality of P2 positions and P3 positions in the front and back direction of the drawing. At this time, the grip reinforcing member 3 is not fixed to the roof panel 1.

  In step 6-3, the roof panel 1 integrated with the front roof rail 5 is placed on a predetermined position above the cab frame 6, and in the next step 6-4, a predetermined welded spot is spot-welded to form a white cab (cab assembly). ).

  In the man-hours 6-5, if the mounting screw 7 is passed through the mounting hole (not shown) of the grip 2, the tip of the screw 7 is inserted into the mounting hole (not shown) formed in the roof panel, and the screw 7 is pushed in as it is, the grip The tip of the screw 7 engages with the welding nut 4 of the mounting reinforcing member 3. Then, if the screw 7 is screwed with a screwdriver or a wrench as it is, the grip 2 is securely fixed to the grip attachment reinforcing member 3 via the roof panel 1.

  The roof panel 1, the front roof rail 5, and the reinforcing member 3 are integrally assembled with the grip 2 as an intermediate, and the rigidity of the roof panel 1 that is integrally assembled is remarkably improved. Therefore, for example, even if an operator hangs on the grip 2, the roof panel 1 has a sufficient strength.

  Even when the reinforcing member 3 is attached to the cab roof side, spot welding is performed on the opened front roof rail 5, so that the so-called “blind work”, which has been a hindrance to productivity in the past, is not necessary, and the work is skillful. The need for is gone.

Next, a second embodiment will be described with reference to FIGS.
In the second embodiment of FIGS. 7 to 9, the equipment (parts) to be attached to the roof panel 1 is an electric retractable mirror (not shown).

  Although the second embodiment of FIGS. 7 to 9 is different from the first embodiment of FIGS. 1 to 6 in the equipment to be attached, the attachment method and the attachment process are substantially the same as those of the first embodiment. Therefore, the structure of the electric retractable mirror reinforcing member 8 as the reinforcing member will be described.

  7 to 9, the electrically retractable mirror mounting reinforcing member 8 is bilaterally symmetric, has a front portion 81 and a bottom portion 82, and is integrally press-molded.

  As shown in FIG. 8, the front part 81 and the bottom part 82 are continuous and have a generally “<” shape. An arrow F in FIG. 8 indicates the front of the cab (vehicle).

  The front part 81 has an upper corner part 81a having a semicircular shape, and is formed so that the width gradually increases from the center 81b in the vertical direction of the front part 81 to the lower part and the bottom part 82.

  In the center of the front portion 81 in the left-right direction, a bead 81c having a fixed shape is formed from the upper end to the middle of the bottom portion 82 in order to ensure rigidity and strength.

In the vicinity of both left and right ends of the bottom portion 82, holes 84 for positioning or for fastening together with other parts are formed. In addition, the rear end portion of the bottom portion 82 has a bent portion 82e that is bent obliquely upward so as to match the inclined portion of the front roof rail (see FIG. 1).
The welding nut 4 is attached to two places above the back surface of the front portion 81, and a mounting hole 85 is formed on the projection surface of the center point of the welding nut 4 of the front portion 81.

  The operational effects of the second embodiment are almost the same as those of the first embodiment.

  It should be noted that the illustrated embodiment is merely an example, and is not a description of the purpose of limiting the technical scope of the present invention.

The principal part sectional view showing the attachment structure of a 1st embodiment of the present invention. The perspective view which showed the position of the said attachment structure in the cab roof of 1st Embodiment of this invention. The front view of the reinforcement member for grip attachment which is 1st Embodiment of this invention. FIG. 4 is a side view with respect to FIG. 3. FIG. 4 is a plan view with respect to FIG. 3. Process explanatory drawing explaining the assembly process in 1st Embodiment of this invention. The front view of the reinforcing member for electric retractable mirror attachment which is 2nd Embodiment of this invention. The side view with respect to FIG. The top view with respect to FIG. The perspective view which shows the structure of the cab roof front end in a prior art. Sectional drawing of the principal part of the said site | part in a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Roof panel 2 ... Grip 3 ... Grip attachment reinforcement member 4 ... Weld nut 5 ... Front roof rail 6 ... Cab frame 7 ... Installation screw 8 ... Electricity Reinforcing member for retractable mirror mounting

Claims (6)

  In a mounting structure for mounting a member on a roof of an automobile, a mounting screw for the member to be mounted on the roof is screwed to a nut fixed to a mounting reinforcing member disposed inside the roof, and the mounting reinforcing member Is fixed to the roof front frame member, and the roof front frame member is fixed to the inside of the roof.   2. The mounting structure according to claim 1, wherein the member to be mounted on the roof of the automobile is a grip.   2. The mounting structure according to claim 1, wherein the member to be mounted on the roof of the automobile is an electric retractable mirror.   In a mounting method for mounting a member on a roof of an automobile, a step of welding and fixing a mounting reinforcing member for the member to be mounted on the roof to a skeleton member for the front of the roof, and for the roof front where the mounting reinforcing member is welded A process for welding and fixing the skeleton member to the inside of the roof, a process for mounting and fixing the roof welded to the skeleton member for the front of the roof on the frame of the cab, and a mounting screw for the member to be attached to the roof And a step of screwing onto a nut fixed to the reinforcing member.   The attachment method according to claim 4, wherein the member to be attached to the roof of the automobile is a grip.   The mounting method according to claim 4, wherein the member to be mounted on the roof of the automobile is an electric retractable mirror.

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