JPH0960651A - Fastening metal fitting for drive shaft boot of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastening metal fitting for the drive shaft boot of an automobile which can be easily manufactured so as to reduce a manufacturing cost, and besides, which can be easily attached. SOLUTION: A folded piece 10 is formed on one end side 9a of a band 9 consisting of band steel and having a predetermined length, and a projection 14 is arranged at the end of the folded piece 10, and also an upwardly projected retaining claw piece 12 is projected from a lower side overlapped part 9c which is above the folded piece 10 via a through hole 13 of the folded piece 10. An engaging hole 17 engaged with the projection 14 and a through hole 15 through which the retaining claw piece 12 is inserted and passed, are insertably arranged on the other end side 9c of the band 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening fitting for tightening and fixing a boot attached to a drive shaft of an automobile and a joint portion of a wheel.

[0002]

2. Description of the Related Art Conventionally, as a fastening metal fitting for a drive shaft boot of this type, there is one shown in FIG. 10, for example. This tightening fitting has a predetermined length on the lower surface of one end side 100a of a band 100 made of a steel strip having a predetermined length and has a predetermined length.
A slightly thicker pad plate piece 101 is fixed along the band 100 by spot welding, and the corresponding plate piece 10 is attached.
A protrusion 102 is provided on the rear end of the first unit. In addition, band 10
On the lower surface of the other end side 100b in the longitudinal direction of 0, locking claw pieces 103 having the same width as the band 100 and the same length as the pad plate piece 101, and further projecting upward at both longitudinal ends thereof, The receiving plate piece 104 having the extended 103 is fixed by spot welding, and a locking hole 105 for locking the projection 102 is formed on the upper surface of the receiving plate piece 104 by raising a part of the band 100 on the upper surface. It is provided and formed.

The fastening metal fittings are wound around the left and right ends of the drive shaft of the automobile and around the boots attached to the joints of the drive shaft and the wheel. 101 is on top and both ends are overlapped, and the projection 102 is fixed to the locking hole 105.
The one end side 100a of the band 100 is pressed in the locked state, and the locking claw pieces 103 are bent inward with each other so that both end sides 100a and 100b of the band 100 are overlapped.

[0004]

As described above, in the conventional tightening metal fitting, the backing plate piece 101 and the receiving plate piece 104 are attached to the band 1.
Since it is formed as a member different from 00 and is further welded to be manufactured, not only is the manufacturing cumbersome but also the manufacturing cost is high.
There is a problem in that the coupling means at both ends of the band 100 is complicated, such as when 03 and 103 are bent, and tightening work is difficult in a narrow space under the vehicle body. Therefore, the present invention is
The object of the present invention is to provide a tightening fitting for a drive shaft boot of an automobile, which has been made in order to solve the problems seen in the related art and which is easy to manufacture and can be easily tightened with a band. .

[0005]

In order to achieve such an object, a tightening fitting for a drive shaft boot of an automobile according to the present invention is easily formed by punching, and a front side is provided on one end side of a band of a predetermined length made of steel strip. Forming a folded-back piece portion to be folded back to, and forming a U-shaped cut in a lower overlapping portion overlapping with the folded-back piece portion, and raising along the cut to provide a locking claw piece, and a locking claw in the folded-back piece portion. A penetrating hole through which the piece is inserted, a projection is formed on the tip of the folded piece, and an engaging hole and a locking claw piece that engages with the projection are inserted on the other end side of the band. And a through hole for forming. And
Insert the through hole into the locking claw piece that is wound around the boot and inserted into the through hole, and engage the engagement hole with the protrusion so that the other end side of the band overlaps with the upper surface of the folded piece and engages in this state. Bend the claw piece so that it cannot be removed. This completes the tightening.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a drive shaft boot tightening fitting according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a part around a drive shaft of an automobile. In the figure, 1 is a chassis, 2 is the chassis 1
Gear box 3 fixed to the center of the is a tire,
The drive shaft 6 is horizontally mounted between the gear box 2 and the wheel 4 of the tire 3 via joint parts 5 and 5. Then, the drive shaft 6 is rotated by the driving force transmitted to the gear box 2, whereby the tire 3
To rotate. A suspension arm 7 supports the wheel 4. Boots 8 filled with grease are attached between the left and right ends of the drive shaft 6 and the joint portions 5. This boot 8 has a joint part 5
Large-diameter tightening bracket A on the side, and drive shaft 1
The small-diameter tightening metal fittings B are respectively tightened on the sides to seal the inside.

The tightening metal fitting A is made of steel strip and is formed into a band having a predetermined length as shown in FIG. 2. One end side 9a of the band 9 is folded back to the front side of a predetermined length to form a folded piece. The part 10 is formed. Further, a long U-shaped cut 11 is provided along the longitudinal direction in the lower overlapping portion 9c that overlaps the folded piece 10, and the locking claw piece 12 is provided by raising the inside thereof along the cut 11. To be An insertion hole 13 is formed through the folding piece portion 10 at a position corresponding to the locking claw piece 12 and the locking claw piece 12 is inserted therethrough, and a projection 14 is formed at the tip of the folding piece portion 10. There is. on the other hand,
The other end side 9b of the band 9 is provided with a through hole 15 through which the locking claw piece 12 is inserted, and the tip end of the other end side 9b is bent inward at a substantially right angle to form a bent portion 16 thereof. The protrusion 1
An engaging hole 17 for engaging with No. 4 is provided through. The cut 11, the through hole 13, the through hole 15 and the like are simultaneously formed by punching together with the band 9.

The fastening metal A is a locking claw piece 1 of the band 9.
The length from the position where 2 is caused to the through hole 15 penetrating to the other end side 9b is formed to substantially match the outer peripheral length on the large diameter side wound around the joint portion 3 of the boot 8. Further, as shown in FIG. 3, the fastening metal fitting B is formed in exactly the same structure as the fastening metal fitting A except for the dimensions, and extends from the position where the locking claw piece 12 is raised to the other end side 9b. The drive shaft 1 of the boot 8 has a length reaching the through hole 15 provided.
It is formed so as to substantially match the outer peripheral length on the small diameter side to be wound around.

Next, the tightening fittings A and B thus formed
How to use is explained. As shown in FIG. 4, the boot 8 has a small diameter portion 8a on the drive shaft 6 side and a large diameter portion 8b on the joint portion 5 side. At the same time, one side is linearly divided in the longitudinal direction. On the other hand, the dividing edge is provided with a convex strip 18 in the longitudinal direction and, on the other hand, with a concave groove 19 for fitting the convex strip 18 in the longitudinal direction so that they can be fitted in a sealed manner.

Then, a proper amount of grease G is filled in the boundary between the drive shaft 6 and the joint portion 5, the divided edge is expanded and the boot 8 is covered, and the ridge 18 is fitted in the groove 19 and sealed. Stop. Further, the fastening metal fittings A and B are respectively fitted into the shallow recessed grooves 20 and 21 which are wound around the left and right ends of the boot 8 and are wound. That is, first, as shown in FIG. 5, the fastening metal fitting A is rotated around the concave groove 20 of the boot 8, and then
As described above, both end sides 9a and 9b are overlapped and the locking claw piece 12 protruding from the insertion hole 13 is inserted into the through hole 15, and
The engagement hole 17 is engaged with the protrusion 14 at the tip of the folded piece 10. Then, the other end side 9b and the folded piece portion 10 which are overlapped as shown in FIG. 7 are pressed from above so that the locking claw piece 12 is projected,
Finally, the locking claw piece 12 is irremovably bent to the tip side of the folding piece portion 10 as shown in FIG. The fastening metal fitting B is also fitted in the groove 21 and wound in the same manner. By winding the tightening metal fittings A and B in this manner, the booth 8 is firmly fixed as shown in FIG.

[0011]

As described above, the fastening fitting for a drive shaft boot of an automobile according to the present invention is formed by punching, and a folded piece portion is formed on one end side of a band made of steel strip, and the folded piece portion is formed. The locking claw piece is formed on the lower overlapping portion that overlaps with, and the folding piece portion is provided with an insertion hole and a projection through which the locking claw piece is inserted, while the other end side is inserted with the locking claw piece. In addition, since the projection is engaged with the through hole and the engaging hole, the manufacturing is simple and the manufacturing cost can be reduced. Further, since this tightening metal fitting is easy to perform the tightening operation, there is an effect that the mounting and tightening can be performed with extremely high workability even in a narrow space below the vehicle body.

[Brief description of drawings]

FIG. 1 is a perspective view of a tightening metal fitting according to the present invention in a used state.

FIG. 2 is a perspective view of a fastener A.

FIG. 3 is a perspective view of a fastener B.

FIG. 4 is an exploded perspective view illustrating a usage state.

FIG. 5 is a cross-sectional view showing a state in which the fastening metal fitting A is attached to the boot.

FIG. 6 is a cross-sectional view showing a state in which the fastening metal fitting A is attached to the boot.

FIG. 7 is a cross-sectional view showing a state in which the fastening metal fitting A is attached to the boot.

FIG. 8 is a cross-sectional view showing a state in which mounting of the tightening metal fitting is completed.

FIG. 9 is a perspective view showing a state in which the fastening metal fittings A and B are attached to the left and right ends of the boot.

FIG. 10 is a perspective view of a conventional fastening fitting.

[Explanation of symbols]

 9 band 9a one end side 9b other end side 9c lower overlapping part 10 folding piece part 11 notch 12 locking claw piece 13 insertion hole 14 protrusion 15 through hole 17 engaging hole A, B tightening fitting

Claims (1)

[Claims] 1. A folding piece part that is folded back to the front side is formed on one end side of a band of a predetermined length made of a strip steel, and a U-shaped cut is provided in a lower overlapping part that overlaps with the folding piece part and along the cut. Pull up to provide a locking claw piece, penetrate the insertion hole through which the locking claw piece is inserted, and provide a projection at the tip, while engaging the projection at the other end of the band And a through hole through which the locking claw piece is inserted, respectively.