JPS5932746Y2 - Layered leaf spring device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a stacked leaf spring device, particularly for steel and FRP springs.
This invention relates to a stacked leaf spring device formed by overlapping each spring plate made by a manufacturer.

2. Description of the Related Art In stacked leaf spring devices used in automobile suspension systems and the like, a clip mechanism is provided to protect the main spring plate during rebound and to prevent the spring plates from shifting laterally.

Conventional steel spring plates can be machined such as perforation to attach a clip mechanism, but FR
In the case of a spring plate made of P, if the embedded fibers are damaged by such machining, it will cause a significant decrease in strength, so it is not preferable to attach the clip mechanism with rivets, etc., and attaching the clip mechanism with adhesive may also reduce reliability. It's not practical from that point of view.

On the other hand, in conventional stacked leaf spring devices made of steel spring plates, the child spring plates located far from the parent spring plate are generally formed to have a short overall length, so the ends of the child spring plates are adjusted accordingly. By attaching the clip mechanism to the spring plate, even if this attachment portion protrudes from the plate surface, it can be prevented from coming into contact with other adjacent spring plates.

However, when using FRP spring plates, adjacent spring plates are often formed to have approximately the same overall length, so the clip mechanism attachment part may come into contact with other spring plates and cause damage. This will cause problems.

This invention was made under the above circumstances, and its purpose is F'RPII! [The spring plate does not require any machining to provide the clip mechanism, so its strength is not compromised; the clip mechanism is securely held in the desired position, and each spring plate To provide a stacked leaf spring device in which a mounting part of a clip mechanism does not interfere with other spring plates even if the spring plates have substantially the same length.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

In a first embodiment shown in FIGS. 1 and 2, the main body 1 of the stacked leaf spring device may be similar to that in conventional devices, with a master spring leaf 2 and a child spring superimposed in the thickness direction. It has plates 3 and 4, and the central part in the longitudinal direction has an appropriate tightening means (
(path shown) in the thickness direction.

The main spring plate 2Fi may be made of FRP as shown in the drawing or may be made of spring steel.

The second child spring plate 3 is made of spring steel, and the third child spring plate 4 is made of FRP.

The clip mechanism 5 comprises two bodies 6.degree. 6 facing away from each other.

The main body 6//'i has arm parts 8, 8 connected to both sides of the intermediate part 7, and has a substantially U-shape, and is formed by bending, for example, a rectangular steel material.

A bolt 10 inserted through through holes 9, 9 is attached to the tip of the arm portion 8.8 by screwing a nut 11 into the bolt 10.

For the nut 11, appropriate detent means (
(as shown) is provided.

The clip mechanism 5 is attached to the child spring plate 3 by rivets 12 such that the intermediate portion 7.7 of each main body 6, 6 is located between the parent spring plate 2 and the second child spring plate 3. ing.

The rivet 12II'i has a protrusion 13 that protrudes upward from the upper surface of the intermediate portion 7 of the upper main body 6, and the lower end 14 is formed so as not to protrude downward from the lower surface of the child spring plate 3.

That is, the intermediate parts 7, 7 of the main bodies 6, 6 and the rivet 1
Attachment portion 15 of clip mechanism 5 consisting of protruding portion 13 of No. 2, etc.
is arranged only on the upper side of the child spring plate 3 made of steel.

The child spring plate 3 has an upwardly curved plate end 16, and a recess 17 in which the mounting portion 15 can be accommodated is formed between it and the master spring plate 2 adjacent to the upper side. There is.

When the device formed as described above is used in an automobile suspension system, etc., the longitudinal center portion of the main body 1 is connected to the axle side via the tightening means etc., as in the conventional device, and Both longitudinal ends of the main spring plate 2 are connected to the vehicle body via appropriate connecting means (as shown).

Since the main spring plate 2 is surrounded by the upper clip body 6 and the bolt 10, and the child spring plates 3 and 4 are surrounded by the lower clip body 6 and the bolt 10, the main spring plate 2 is surrounded by the upper clip body 6 and the bolt 10. 2 and lateral displacement of the spring plates 2, 3.4 is prevented.

Furthermore, according to the above configuration, since the clip mechanism 5 is supported by the steel spring plate 3, the FRP spring plate 2
, 4 do not require machining to provide the clip mechanism 5, and therefore do not require drilling or the like that would involve cutting the embedded fibers, so there is no reduction in strength.

Moreover, the clip mechanism 5 has a rivet 1 attached to the steel spring plate 3.
2, it can be securely held in the desired position.

Furthermore, since the attachment portion 15 of the clip mechanism 5 is accommodated in the recess 17, even if the spring plates 2゜3 are approximately the same length, the protrusion 13 etc. can come into contact with the parent spring plate 2 without colliding with it. Therefore, the main spring plate 2 will not be damaged.

In the second embodiment shown in FIG.
0 has one main body 6, the attachment part 15 of which is attached to the child spring plate 3.
is placed below the .

The plate end 16 of the child spring plate 3 is connected to the third child spring plate 4.
A recess 17 is formed between the mutually adjacent spring plates 3 and 4 in which the mounting portion 15 can be accommodated.

The rest of the structure is substantially the same as that of the first embodiment.

In addition, in the third embodiment shown in FIG. 4, a spacer 21 is interposed between the master spring plate 2 and the slave spring plate 3 at the center in the longitudinal direction. The spring plate 3 is curved so that the portion to which the clip mechanism 20 is attached protrudes upward, and the rest of the spring plate 3 is substantially the same as that of the second embodiment.

Furthermore, in the fourth embodiment shown in FIG. 5, the master spring plate 22 is made of steel and has a centerpiece 23 formed at the end of the plate, and the child spring plates 24, 25, 27 are made of FRP. Same 2
6 is made of steel.

The attachment portion 15 of the clip mechanism 20 is attached to a child spring plate 26.
．． It is housed in a recess 17 between 27.

The rest of the structure is substantially the same as in each of the above embodiments.

It is needless to say again that each of the second to fourth embodiments can achieve substantially the same effects as the first embodiment.

Note that the present invention is not limited to the above embodiments.

For example, if the main body 1 of the leaf spring device has spring plates made of steel and FRP, the number and arrangement of these spring plates can be set arbitrarily, and the clip mechanism can be adjusted according to the configuration of the main body. Set.

Finally, the clip mechanism 5 has two main bodies 6.6 as described above.
Instead of providing a main body having an H-shaped cross section as illustrated in FIG. 6, a main body may be used.

In addition, various modifications and applications are possible within the scope of the gist of the present invention.

As described above, the present invention provides a clip mechanism supported by a steel spring plate, and also curves a part of the steel spring plate supporting this clip mechanism in the thickness direction to connect the steel spring plate. A recess that can accommodate the attachment part of the clip mechanism is provided between the adjacent FRP spring plate, so the FR
Since the spring plate made of P does not require machining to provide the clip mechanism, its strength is not impaired, and the clip mechanism can be reliably held at a desired position.

Since the housing is provided with a recess capable of accommodating the mounting portion of the clip mechanism, it is possible to effectively prevent the mounting portion from colliding or sliding against the adjacent spring plate and causing damage.

[Brief explanation of drawings]

Fig. 1 is a partial side view showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view taken along the line ■-■ in Fig. 1, and Figs. FIG. 6 is a partial side view showing another embodiment, and a cross-sectional view showing a modification of the main part. 1... Leaf spring device main body, 2, 22... Main spring plate, 3
゜4.24-21... Child spring plate, 5, 20... Clip mechanism, 12... Rivet, 13... Projection, 1
5...Mounting part, 17...Recess.

Claims (1)

[Scope of utility model registration request] In a stacked leaf spring device having spring plates made of steel and FRP that are overlapped in the thickness direction, a clip mechanism supported by the steel spring plates is provided, and a steel spring plate supporting the clip mechanism is provided. A part is curved in the thickness direction,
A stacked leaf spring device characterized in that a recess capable of accommodating the attachment portion of the clip mechanism is provided between the steel spring plate and the adjacent FRP spring plate.