JPS5849843Y2 - Shackle structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shackle structure for supporting a leaf spring on a vehicle body via a bracket in a vehicle such as an automobile.

Leaf springs are used as suspension systems for vehicles such as automobiles, but since the span between the attachment points at both ends of the leaf spring fluctuates depending on its deformation, the span between the attachment points at one end of the leaf spring is designed to allow for this variation. is attached to a bracket on the vehicle body via a movable shackle.

Conventionally, as an example of the above-mentioned shackle structure, as shown in Fig. 4, two inner and outer shackle plates atb are attached at a predetermined interval by two upper and lower shackle pins d and e via first bushes c and c, respectively. The attachment part of the leaf spring h is attached to the upper shackle pin d via the second button and third bush fsg, and the attachment part of the leaf spring h is attached to the lower shackle pin e via the second button and third bush f9g. A fixed bracket i is attached to the frame, and the outer ends of the upper and lower shackle pins d and e are fixed to the outer shackle plate b by welding, and the upper and lower shackle pins pass through the inner shackle plate a. Hollow l'j on the inner end threads of d and e, respectively.
, j are assembled by screwing together.

However, in the above conventional shackle structure,
The attachment to the vehicle body differs depending on the type in its relative position to the side frame located inside, and this side frame k is located above the upper shackle pin d, as shown by the solid line. In this case, it is possible to tighten the nut j even with the above shackle structure, and there is no problem in assembling it, but the side frame k should be arranged so as to cover the side of the upper shackle pin d, as shown by the chain line. In this case, it is difficult to fit the nut j onto the upper shackle pin d, resulting in poor workability and sometimes making tightening impossible.

In addition, in order to solve the above problem, if the upper shackle pin d is oriented in the opposite direction and its one end is fixed to the inner shackle plate a (the lower shackle pin e has the same structure as in Fig. 4), Even if workability is improved, each shackle pin d.

When inserting the tip of the nut e into the holes of the mating shackle brakes a and b, it becomes difficult because the parallelism of both shackle pins (parallelism of both shackle plates) cannot be obtained, and it is difficult to tighten the nut j. Assembling will significantly reduce work efficiency.

In addition, if the above-mentioned shackle pin dte is not fixed and prevented from rotating by welding its one end to the shackle plays (a) and (b), the bending rigidity of the shackle due to the deformation of the leaf spring h and the rolling of the vehicle body will deteriorate. decreases.

In view of these points, the present invention fixes the inner end of the shackle pin facing the side frame rim to the inner shackle plate, provides a male thread at the other end to removably fix the outer shackle plate, and fixes the outer shackle pin to the other shackle pin. Provided is a shackle structure in which an inner shackle plate is removably fixed by providing a male thread at the inner end thereof, a reinforcing plate is fixed to the outer end, and this reinforcing plate is removably fixed to the outer shackle plate. The purpose of the assembly is to improve the assembly properties without reducing the rigidity, and to solve the above-mentioned conventional drawbacks.

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

In FIGS. 1 to 3, 1 is a side frame extending in the longitudinal direction of the vehicle body, 2 is a cross frame extending outwardly through the side frame 1, and 3 is a base end portion of the cross frame 2. is welded and the tip is attached to side frame 1
The bracket 4 extends obliquely downward along the central part of the leaf spring, which supports an axle (not shown) and has a large number of leaf springs stacked on top of each other. and a cylindrical bracket boss 3a fixed to the tip of the bracket 3 are connected via a shackle 5, and the rocking of the shackle 5 causes the one end attachment portion 4a of the leaf spring 4 to be attached to the leaf spring 4.
The span is adjustable by deformation.

The shackle 5 has inner and outer shackle plates 6.I located on both sides of the attachment portion 4a of the leaf spring 4 and the bracket boss 3a of the bracket 3, and the shackle plates 6.7 have pin attachment holes 6a and 6 on the upper and lower sides, respectively.
b, 7a, and 7b are drilled.

An upper shackle pin 8 is inserted into the upper pin mounting holes 6a and 7a.
is inserted from the inner shackle plate 6 to the outer shackle plate 7 via a first bushing 10 made of a metal pipe, and the lower pin mounting holes 6b, 7
In b, a lower shackle pin 9 is inserted from the outer shackle plate 7 to the inner shackle plate 6 via a first bush 10 also made of a metal pipe.

One end attachment portion 4a of the leaf spring 4 is attached to the upper shackle pin 8, and this attachment portion 4a
and the upper shackle pin 8, there is a third bushing 12 made of a metal pipe like the first bushing 10, and a ring-shaped cushioning material sandwiched between the first bushing 10 and the third bushing 10.12. A second bushing 11 is interposed between the mounting portion 4a and the inner and outer shackle plates 6 on both sides thereof.
Washers 13 and 13 are interposed between the two.

The bracket boss 3a of the bracket 3 is attached to the bent lower shackle pin 9, and between the bracket boss 3a and the lower shackle pin 9, there is similarly connected the first bush 10 and a metal pipe. an annular second bushing 11 made of a cushioning material sandwiched between the first and third bushes 10 and 12;
A washer 13°13 is interposed between the bracket boss 3a and the inner and outer shackle plates 6.7 on both sides of the bracket boss 3a.
is interposed.

The flange-shaped inner end 8a of the upper shackle pin 8 is fixed to the inner shackle plate 6 by welding, and the outer end 8b is provided with a male thread for screwing into the nut 14.

On the other hand, the flange-shaped outer end 9b of the lower shackle pin 9 is fixed by welding to a reinforcing plate 15 interposed between the outer end 9b and the outer shackle plate I, and the inner end The portion 9a is provided with a male thread that is screwed into the nut 14.

The reinforcing plate 15 has approximately half the size of the outer shackle plate 7, and the fixing bolt 1 is attached and detached from the outside.
6, the reinforcing plate 15 is fixed to the outer shackle plate 7.

To explain how to assemble the shackle 5, the first bushing 10, the second bushing 11 and the third bushing 12 are inserted into the mounting portion 4a of the leaf spring 4, and washers 13 and 13 are interposed on both sides. 13. After bringing the inner and outer shirtcle plates 6, 7 into contact with both sides of 13, insert the upper shackle pin 8 from the inside to the outside through the upper pin attachment hole 6a1, the first bushing 10, and the upper pin attachment hole I.
a, and screw the nut 14 onto the outer end 8b and tighten to install.

Next, the first bushing 10, the second bushing 11, and the third bushing 1 are installed in the bracket boss 3a of the bracket 3.
2 and with washers 13° 13 attached to both sides of this bracket boss 3a, the leaf spring 4
(inner and outer shackle plays fixed to the mounting part 4a) 6
, 7 lower pin mounting hole 6bt7b and lower first bush 1
Insert the inner and outer shackle plates 6 so that the inner holes of
57 on both sides of the washer 13.13, and attach the lower shackle pin 9 together with the reinforcing plate 15 from the outside to the inside through the lower pin attachment hole 7b and the lower first bush 1.
0. After inserting into the lower pin mounting hole 6b and fixing the reinforcing plate 15 to the outer shackle plate 7 with the fixing bolt 16, screw the nut 14 onto the inner end 9a of the lower shackle pin 9 and tighten it. , assembly is completed.

In addition, when removing it, perform the above assembly procedure in reverse order.

Therefore, in the above embodiment, of the two upper and lower shackle pins 8 and 9, only the inner end 8a of the upper shackle pin 8 facing the side frame 1 is fixed to the inner shackle plate 6, and the lower shackle pin 9 is fixed to the inner shackle plate 6. Since the lower shackle pin 9 is not fixed to both shackle plates 6 and 7, not only is it easy to assemble the lower shackle pin 9, but also the assembly of the shackle 5 to the leaf spring 4 and the bracket 3 is easy. Since the assembly can be performed separately, even if the side frame 1 is located to the side of the upper shackle pin 8, the assembly can be easily and efficiently carried out without being hindered by this.

Furthermore, since the nut 14 is tightened to the upper shackle pin 8 on the outside, assembly is further facilitated.

By fixing the twisted lower shackle pin 9 to the outer shackle plate 7 via the reinforcing plate 15 fixed thereto, the lower shackle pin 9 can be reliably prevented from rotating during use. This reinforcing plate 15 allows the shackle 5 to maintain the same bending rigidity as the conventional one without causing any slack.

Therefore, according to the shackle structure of the present invention as described above,
The inner end of the shackle pin facing the side frame is fixed to the inner shackle plate, and the other end is provided with a male thread to detachably fix the outer shackle part V-4,
A male thread is provided at the inner end of the other shackle pin to detachably fix the inner shackle plate, and a reinforcing plate is fixed to the outer end, and this reinforcing plate is detachably fixed to the outer shackle plate. Therefore, the assembly work can be performed easily and efficiently without being affected by the positional relationship with the side frame.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a plan view of the main part of the shackle, FIG. 2 is a front view of the same, and FIG.
The figure is a sectional view taken along the line ■--■ in FIG. 2, and FIG. 4 is a sectional view showing a conventional example. 1...Side frame, 2...Cross frame, 3
...Bracket, 3a...Bracket boss, 4...
・Leaf spring, 4a...Mounting part, 5...Shackle, 6...Inner shackle plate, 6a, 6b
... Hiso mounting hole, 7... Outer shackle plate,
7a, 7b... Pin mounting hole, 8, 9... Shackle pin, 8a, 9a... Inner end, 8b, 9b... Outer end, io, il. 12... Bush, 13... Washer, 14...
Nut, 15... Reinforcement plate, 16... Fixing bolt.

Claims (1)

[Scope of utility model registration request] The two inner and outer shackle plates were attached via pushers with two upper and lower shackle pins, a leaf spring was attached to one shackle pin via the bushing, and a bracket fixed to the frame was attached to the other shackle pin via the pusher. In the shackle, the inner end of the shackle pin facing the side frame is fixed to the inner shackle plate, and the other end is provided with a male thread to removably fix the outer shackle plate, and the inner end of the other shackle pin is fixed with a male thread. A shackle structure characterized in that an inner shackle plate is removably fixed by providing a reinforcing plate to an outer end thereof, and a reinforcing plate is fixed to an outer shackle plate in a removable manner.