JPH05312228A - Leaf spring tightening clip - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a leaf spring fastening clip for fastening a leaf spring composed of a plurality of spring leaves, which eliminates relative movement between upper and lower panels of the clip, and assembles the clip. The purpose is to facilitate fastening work. [Structure] A spacer 12 that defines a distance between the upper panel 7 and the lower panel 5 is provided at each bolt 8 portion that fastens the upper panel 7 and the lower panel 5 of the fastening clip B, and the spacer 12 is fixed by fastening each bolt portion 8. The upper panel 7 and the lower panel 5 are configured to be fastened to each other with the interposition therebetween.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leaf spring fastening clip for fastening a leaf spring formed by stacking a plurality of spring leaves.

[0002]

2. Description of the Related Art Conventionally, a leaf spring used as a chassis spring of a vehicle or the like is formed by stacking a plurality of curved spring leaves made of strip-shaped spring steel. The short spring leaves (hereinafter referred to as auxiliary leaves) are stacked one below the other, and the central parts of these are fastened with center bolts, and the appropriate places between the central part and both ends are fastened with fastening clips. I try to tighten it.

FIG. 8 shows, as an example of such a leaf spring, a leaf spring A composed of two leaves.
In the drawing, 1 is a main leaf, 2 is a second auxiliary leaf which is superposed on the lower side of the main leaf 1, and spring eyes 3 are formed at both ends of the main leaf 1. In addition, the center portions of both the leaves 1 and 2 are fastened with a center bolt 4, and near the both ends of the second auxiliary leaf 2, a fastening clip B is used to fasten both leaves 1, 2.
2 is fastened. The left part of FIG. 8 shows the case where the silencer 11 is interposed between the leaves 1 and 2, and the right part shows the case where the silencer is not interposed.

As shown in FIGS. 9 and 10, such a fastening clip B has a lower panel 5 and a rubber plate 6 on the lower surface.
The lower panel 5 is fastened to the lower surface of the lower auxiliary leaf 2 with tacks 9 and the upper panel 7 is fixed to the lower panel 5 by fastening the upper panel 7 and the lower panel 5 to each other. It comes in contact with the upper surface of the main leaf 1 via the rubber plate 6, and the bolts 8 are attached from both sides of both panels 7,
Through which the nut 10 is screwed in and fastened.

By the way, in the leaf spring B, a squeaking noise may be generated due to a bending action caused by the load and vibration of the vehicle. To prevent this, a squeak noise is generated.
As shown in the figure, a resin plate-shaped silencer 11 is inserted between the leaves 1 and 2 near the end of the second auxiliary leaf 2, and as shown in FIG. As shown in the right side and FIG. 10, it is also practiced to fasten the clip without inserting the silencer.

[0006]

However, in such a conventional leaf spring fastening clip, the lower panel and the upper panel are fastened by bolts to some extent in the vertical direction, but in the horizontal direction. Relative motion is generated between the lower panel and the upper panel, and it cannot be said that the fastening is fixed. That is, in other words, such a fastening clip cannot be said to be fastened in a tightly tightened state.

Therefore, without a silencer,
As described above, there is a problem that squeak noise is generated near the fastening clip, and in the case of the silencer type, the relative momentum between the upper and lower leaves is further increased. There is a problem that will be added. In addition, when assembling the leaf spring, it is necessary to tighten the fastening clip while measuring the dimension between the upper and lower plates so that the nut is not screwed in too much or not enough. However, there is a manufacturing problem that the assembly work is complicated and difficult.

The present invention was devised in view of the above problems, and improved the fastening clip with rubber to improve the strength reliability of the fastening clip and facilitate the assembly work of the leaf spring. , A leaf spring fastening clip is provided.

[0009]

For this reason, the leaf spring fastening clip of the present invention is a rubber clip for sandwiching a leaf spring composed of a plurality of sheets from the upper and lower surfaces, and an upper panel and a lower panel of the clip. A spacer that defines the distance between the upper panel and the lower panel is provided at each bolt portion to be fastened, and the upper panel and the lower panel are fastened in a tightened state with the spacer interposed by fastening the bolt portions. It is characterized by doing so.

[0010]

In the leaf spring tightening clip of the present invention described above, the spacer provided on each bolt portion defines the distance between the upper panel and the lower panel. Therefore, by setting the length of the spacer to a desired predetermined length, You can complete the tightening work of the clip just by tightening the nut a little.

Further, since the spacer is interposed between the upper and lower panels in the bolt portion, the upper and lower panels and the bolt are fixed in a tightened state by fastening the nut to the bolt, and the upper and lower panels of the fastening clip are fixed. The fixed clips are fastened to each other without any relative movement.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 7 show an embodiment of a leaf spring fastening clip according to the present invention, and FIG. 1 shows a leaf spring fastening clip. 2 is a sectional view taken along the line II of FIG. 5, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is an enlarged partial perspective view of only the spacer, and FIG.
Is an enlarged partial perspective view showing another embodiment of the spacer, FIG. 5 is a front view of a leaf spring end portion having a silencer, FIG. 6 is a bottom view of FIG. 5 seen from below, and FIG. It is a front view of an end part, and in FIGS.
The same reference numerals as those in FIGS. 8 to 10 indicate almost the same parts.

Also in this embodiment, as shown in FIGS. 5 and 6, for example, two of the main leaf 1 and the auxiliary leaf 2 are provided.
Near the end of the second auxiliary leaf 2 of the leaf spring A having a single sheet structure, the leaves 1 and 2 are fastened by fastening clips B. Further, as shown in FIGS. 1 and 2, the fastening clip B has a lower panel 5, and the lower panel 5 has a second spring leaf at a portion where the leaf spring A is to be fastened. That is, the lower auxiliary leaf 2 is brought into contact with the lower auxiliary leaf 2 from below, and is fastened to the auxiliary leaf 2 by tacks 9.

The fastening clip B has an upper panel 7. A rubber plate 6 is adhered to the lower surface of the upper panel 7 so that the rubber plate 6 faces downward with respect to the lower panel 5. The uppermost spring leaf, that is, the main leaf 1 is brought into contact with the uppermost leaf. Then, 2 of the protruding ends of both panels 7 and 5
At a few places or several places, the bolt 8 penetrating from the upper side to the lower side is inserted, and at the same time, a cylindrical spacer 12 as shown in FIG. 3 is interposed between both panels 7 and 5 on the outer periphery of the bolt 8. , From the bottom side to this bolt 8 nut 10
Is screwed in to fasten both panels 7 and 5 and fasten the fastening clip B in a tightened state.

In this case, the spacer 12 is set in advance as having a predetermined length so as to define the distance between the panels 7 and 5, and when the nut 10 is fully screwed in (this tightening force is , 10 times or more compared to the conventional one without the spacer 12), both panels 7,
No. 5 cannot be tightened below the length of the spacer 12. Therefore, the leaf spring can be tightened to such an extent that the rubber 6 is compressed, but the tightening clip is not excessively tightened more than necessary. It is something like this.

Further, since the spacer 12 is interposed between the upper panel 7 and the lower panel 5 so as to surround the bolt 8 tightened by the nut 10, the upper panel 7 and the lower panel 5 are The leaf spring A is fastened in a tightened state such that the leaf spring A does not move in the horizontal direction.

The spacer 12 may be formed as a sleeve-shaped member as shown in FIG. 3 or as a member having an axial vertical groove 13 as shown in FIG. Further, as shown in FIG. 7, the leaf spring A
Is composed of a large number of leaves of three or more, the fastening clip B as described above is fastened at several points between the center and both ends of the leaf spring A. This is the same as the conventional one.

With the above structure, the leaf spring A is fastened with the main fastening clip B by fastening the upper panel 7 and the lower panel 5 with the bolts 8 tightened with the spacer 12 interposed therebetween. When this is done, relative movement does not occur between the upper panel 7 and the lower panel 5 of the fastening clip B, so even if there is relative movement between the spring leaves due to the occurrence of bending due to the load on the leaf spring A, There is no effect on the clip, which allows a longer life of the fastening clip to be achieved.

Further, in the assembly work of the leaf spring A, even when the nut 10 is screwed into the bolt 8 when the fastening clip B is fastened, the spacer 12 is interposed between the panels 7 and 5. Therefore, the tightening is completed at the position where the nut 10 is fully screwed in without being screwed in more than necessary. Therefore, when the fastening clip is fastened, the upper and lower plates 7,
It is not necessary to assemble while measuring the dimension between the 5 and the assembling work can be facilitated easily.

Needless to say, the present invention can be similarly applied to a leaf spring having no silencer 11.

[0021]

As described above in detail, according to the leaf spring tightening clip of the present invention, in the rubber clip which sandwiches the leaf spring composed of a plurality of sheets from the upper and lower surfaces, the upper panel and the lower panel of the clip. A spacer that defines a distance between the upper panel and the lower panel is provided at each bolt portion that fastens and
Since the upper panel and the lower panel are fastened together by tightening the bolts with the spacer interposed therebetween, the upper and lower plates are integrated with each other by the tightened fastening so that relative motion does not occur. Therefore, the strength of the bolt portion, in other words, the strength of the entire fastening clip can be improved. In addition, when assembling the fastening clip, the gap between the plates can be naturally defined by simply screwing the nut in once, which is advantageous in that the assembling work can be made very simple and easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing a tightened state of a leaf spring tightening clip according to an embodiment of the present invention (I- in FIGS. 2 and 5).
It is a sectional view taken along the line I).

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged partial perspective view of only a spacer.

FIG. 4 is an enlarged partial perspective view showing another embodiment of the spacer.

FIG. 5 is a partial front view of a leaf spring end having a silencer.

FIG. 6 is a bottom view of FIG. 5 seen from below.

FIG. 7 is a partial front view of an end portion of a leaf spring composed of a large number of sheets.

FIG. 8 is an overall front view of a leaf spring composed of two sheets.

FIG. 9 is a sectional view showing a fastening state of a fastening clip in a portion having a silencer according to a conventional example.

FIG. 10 is a cross-sectional view showing a fastening state of a fastening clip in a portion without a silencer according to a conventional example.

[Explanation of symbols]

 1 Main Leaf 2 Auxiliary Leaf 3 Spring Eye 4 Center Bolt 5 Lower Panel 6 Rubber Plate 7 Upper Panel 8 Bolt 9 Tack 10 Nut 11 Silencer 12 Spacer 13 Vertical Groove A Leaf Spring B Tightening Clip

Claims (1)

[Claims] 1. A rubber-made clip for sandwiching a leaf spring composed of a plurality of sheets from above and below, wherein a space between the upper panel and the lower panel is provided at each bolt portion for fastening the upper panel and the lower panel of the clip. A leaf spring tightening clip, characterized in that a prescribed spacer is provided, and the upper panel and the lower panel are fastened together by tightening the bolts with the spacer interposed therebetween.