JP2002235722A - Nut holding mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily hold a nut at a specified position of a body even in a restricted space. SOLUTION: A flange 11 of a nut holder 10 is welded onto the outside of the trailing arm holding part of the body, and a square end surface 13 formed at the rising part 12 of the nut holder 10 holds the outer peripheral surface of a flanged nut 14. A nut plate 15 extending downward is fixed to the lower end surface of the nut 14, and the tip of a tongue piece 16 pried up from the nut plate 15 is inserted into a small hole in the outer side surface. The nut 14 is held at the specified position on the outer side surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for holding a member in a vehicle, for example, a nut fitted to a bolt for attaching a trailing arm to the vehicle body, at a predetermined position on the vehicle body.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional trailing arm mounting structure for a vehicle body includes a holding portion 3 having a substantially U-shaped cross section via a bracket 2 on a side sill 1 or the like.
Are fixed downward, and the nut holder 4 welded to the outer surface of the holding portion 3 holds the nut 5, and the nut 5 is positioned so as to be in contact with the bolt hole 6 formed in the holding portion 3. A bolt 9 is inserted through the trailing arm front end 7 and the rubber bushes 8, 8 which are prevented from rotating and arranged in the holding portion 3, and the bolt 9 is inserted into the bolt hole 6 from the inside and screwed into the nut 5, The trailing arm front end 7 is attached to the vehicle body such as the holding section 3.

In other words, if the gap A between the side sill 1 and the holding portion 3 is very small, and it is difficult to screw the bolt 9 while holding the nut 5 at the predetermined position when the vehicle is outfitted, Since the nut 5 is held in advance by the nut holder 4 welded to the holding part 3 before entering, the body of the holding part 3 and the like is subjected to electrodeposition coating prior to the outfitting process. When this is done, the paint adheres to the threaded surface of the nut 5, so that the frictional force of engagement of the bolt 9 with the nut 5 is reduced, and the axial tightening force of the bolt 9, that is, the axial force, is appropriately increased. In addition, there is a problem that it is practically difficult to obtain it reliably.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to enable a nut to be easily held at a predetermined position on a vehicle body even in a narrow space.

[0005]

Therefore, a nut holding mechanism according to the present invention is fixed to a side surface of the vehicle body member in close proximity to a bolt hole formed in the vehicle body member, and is arranged in contact with the bolt hole. A nut holder fitted to the outer peripheral surface of the nut; and a nut plate having one end fixed to the outer surface of the nut and extending vertically, and a projection formed on the nut plate is engaged with the vehicle body member. .

That is, a nut holder is fixed to a side surface of a vehicle body member close to a bolt hole formed in the vehicle body member,
An outer peripheral surface of the nut arranged in contact with the bolt hole is fitted with the nut holder, the nut is prevented from rotating by the nut holder, and one end of the nut plate is fixed to the outer surface of the nut and extends vertically. Since the projection is engaged with the vehicle body member and the nut arranged on the side surface of the vehicle body member can be prevented from dropping, even if the space on the side surface of the vehicle body member is narrow, the vehicle body after the electrodeposition coating is performed. During assembly or the like, the nut can be easily held on the side surface of the vehicle body member in contact with the bolt hole formed in the vehicle body member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention shown in the drawings will be described by assigning the same reference numerals to the same parts as those of the conventional device. 1 to 3, a holding portion 3 having a substantially U-shaped cross section is fixed downward to a side sill 1 via a bracket 2, and a flange 11 of a nut holder 10 is welded to an outer surface of the holding portion 3. The rectangular end surface 13 formed on the rising portion 12 of the holder 10 sandwiches the outer peripheral surface of a flanged nut 14 disposed on the outer surface of the holding portion 3 so as to be in contact with the bolt hole 6 formed on the holding portion 3. It functions to position the nut 14 and prevent rotation.

An upper end of a strip-shaped nut plate 15 extending downward is fixed to a lower end surface of the nut 14, and a tip end of a tongue piece 16 cut and raised from the nut plate 15 is formed on an outer surface of the holding portion 3. The nut 14 is inserted into the small hole 17 to prevent the nut 14 from dropping, and at the same time, the nut 14 is elastically fitted to the square end face 13 of the nut holder 10.

Further, a bolt 9 is inserted through the trailing arm front end 7 of the suspension and the rubber bushings 8 disposed in the holding portion 3, and the bolt 9 is inserted into the bolt hole 6.
The trailing arm front end 7 is attached to the vehicle body such as the holding portion 3.

In the above device, the nut 14 arranged on the outer surface of the holder 3 so as to be in contact with the bolt hole 6 of the holder 3 has its outer peripheral surface sandwiched by the square end surface 13 of the nut holder rising portion 12. At the same time as the positioning and rotation prevention, the tip of the tongue piece 16 of the nut plate 15 fixed to the outer surface of the nut 14 is
To prevent the nut 14 from dropping, even if the gap A between the side sill 1 and the holding portion 3 is very small, hold the nut plate 15 in hand and move the nut 14 from below to the nut holder 10. Inserted opposite, tongue piece 1
By inserting the tip of the nut 6 into the small hole 17, the positioning of the nut 14 and the prevention of rotation of the nut 14 and prevention of the nut 14 from dropping are immediately performed in a state where the flange of the nut 14 is positioned in the rising portion 12 of the nut holder 10. It can be easily enabled.

That is, the nut 14 can be easily held on the outer surface of the holding portion 3 so as to be in contact with the bolt hole 6 of the holding portion 3, and the bolt 9 can be screwed into the nut 14. Holder 3 during vehicle outfitting process
It is easy to attach the nut 14 to the vehicle body side on the outside surface of the holding part 3, and it is not necessary to hold the nut 14 on the outside surface of the holding part 3 before the outfitting process. In the process, the adhesion of paint to the screw surface of the nut as in the prior art can be completely eliminated.
The axial force of the bolt 9 with respect to 4 can always be obtained with an appropriate magnitude and reliably.

When the bolt 9 is screwed into the nut 14 held on the outer surface of the holding portion 3, the flange of the nut 14 is locked on the inner surface of the nut holder rising portion 12, so that the nut 14 is moved outward. That is, it is possible to easily suppress falling down, and it is also possible to make the gap between the outer surface of the holding portion 3 and the inner surface of the nut holder rising portion 12 smaller than that shown in the figure to further ensure the above-described operation. Not even.

[0013]

In the nut holding mechanism according to the present invention, the nut holder fixed to the side surface of the vehicle body member in the vicinity of the bolt hole of the vehicle body member and the outer peripheral surface of the nut arranged in contact with the bolt hole are fitted. In addition, the nut is prevented from rotating by the nut holder, and the protrusion of the nut plate fixed to the outer surface of the nut engages with the vehicle body member, and the nut disposed on the side surface of the vehicle body member falls. Even when the space on the side surface of the body member is narrow, it can be prevented when assembling the body after electrodeposition coating, etc.
As a result, the nut can be easily held on the side surface of the vehicle body member in contact with the bolt hole formed in the vehicle body member. As a result, the nut can be held when the vehicle is rigged, and it is necessary to attach the nut to the vehicle body in advance. Therefore, the paint can be prevented from adhering to the screw surface of the nut during the painting process of the vehicle body, so that there is a feature that the axial force of the bolt against the nut can always be secured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of the embodiment.

FIG. 3 is a perspective view of a main part of the embodiment.

FIG. 4 is a longitudinal sectional view of a conventional device.

[Explanation of symbols]

 Reference Signs List 3 Holder 6 Bolt hole 7 Trailing arm front end 8 Rubber bush 9 Bolt 10 Nut holder 12 Rise 13 Square end face 14 Nut with flange 15 Nut plate 16 Tongue piece 17 Small hole

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hiroyuki Akazawa 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation F-term (reference) 3C038 AA04 BB03 EA06 3D001 AA18 BA04 DA07 3D003 AA18 CA17 DA29

Claims (2)

[Claims] 1. A nut holder which is fixed to a side surface of the vehicle body member in close proximity to a bolt hole formed in the vehicle body member and fits with an outer peripheral surface of a nut arranged in contact with the bolt hole;
A nut plate having one end fixed to an outer surface of the nut and extending vertically, wherein a projection formed on the nut plate is engaged with the vehicle body member; 2. The nut holding mechanism according to claim 1, wherein the nut is a flanged nut.