JPH062724A - Laminated spring - Google Patents

Abstract

PURPOSE:To prevent the easy coming-off of a silencer which is inserted between plate springs, even if it is worn, and reduce the frequency of replacement of worn silencers at the time of maintenance. CONSTITUTION:In a laminated spring with a silencer 2 inserted which is formed like a plate between a plural number of plate springs 1 and has elasticity, a projection section 2a is provided on both faces of the silencer 2, a hole 1a which passes through projection sections 2a, 2b is provided in the plate spring 1, and the hole which passes through one of the projection sections of the silencer 2 is constituted in such a way that it includes movable relief allowance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is used as a shock absorber between an axle and a bogie and the like. The present invention relates to an improvement of a leaf spring provided with a silencer that reduces squeak noise.

[0002]

2. Description of the Related Art A leaf spring is an important element as a cushioning member between an axle and a chassis of an automobile. A squeak noise is generated with a change in load. As shown, a technique is known in which the silencer 12 shown in FIG. 5 is inserted between the leaf springs 11. The silencer 12 is a thin plate-like member made of an elastic material that is sandwiched between the leaf springs 11, particularly near the end of the leaf spring 11, and by sandwiching this between the leaf springs 11, the leaf springs 11 are separated from each other. It is designed so that it is not directly rubbed against.

In the conventional structure, this plate-shaped silencer 12 is used.
A convex portion (boss) 12a is formed on one surface of the plate, a hole 11a is provided on the side of the leaf spring 11 corresponding to the convex portion 12a, and the convex portion 12a is inserted into the hole 11a. Those that perform positioning are known (Shokai Sho 56
No. 15834, No. 61-96027.

[0004]

This plate-shaped silencer has a property of being originally worn with use, and is inspected according to maintenance and is replaced if there is wear beyond the limit, but it is frequently used. Replacing is a pain. In addition, if the blade spring is slightly worn, it may fall off when an impact is applied to the leaf spring.

An object of the present invention is to improve the above and to provide a leaf spring having a structure in which the silencer is less likely to fall off even if abrasion occurs.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a stacked leaf spring in which a plurality of leaf springs are stacked, and a plate-shaped elastic material silencer is inserted between the leaf springs. Is provided with a convex portion, each of the leaf springs is provided with a hole through which the convex portion is inserted, and for the hole, for a hole through which at least one of the convex portions on both sides of one silencer is inserted, It is characterized in that the silencer is a hole including a clearance in a direction in which the silencer relatively moves according to a load applied to the leaf spring.

[0007]

Since the convex portions are formed on both sides and the two convex portions are inserted into the holes of the leaf spring, respectively, the possibility that the laminated leaf spring will fall off even if an impact is applied thereto is reduced.

Since at least one of the holes of the two leaf springs into which the convex portions on both sides are inserted has a relief allowance according to the movement, even when a load is applied to the leaf spring, it is damaged by shearing force. There is nothing to do.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a front view showing an assembled state of a leaf spring according to an embodiment of the present invention, FIGS. 2 (a) and 2 (b) are enlarged sectional views of an A portion shown in FIG. 1 of the embodiment of the present invention, and FIG. It is a perspective view which shows the shape of the silencer in an Example.

In the embodiment of the present invention, as shown in FIGS. 1, 2 (a) and 3, a plurality of leaf springs 1 are superposed, and an elastic material formed in a plate shape between the leaf springs 1 is formed. Silencer 2
Is inserted. Convex portions 2a and 2b are provided on both surfaces of the silencer 2, and the convex portion 2a is formed thinner than the convex portion 2b by a predetermined dimension. Further, the leaf spring 1 is provided with holes 1a through which the convex portions 2a and 2b are inserted.
An escape allowance is formed between the convex portion 2a inserted into the hole 1a and the silencer 2 relative to the load applied to the leaf spring 1.

As described above, since the silencer 2 has the convex portions 2a and 2b formed on both sides thereof and the two convex portions 2a and 2b are inserted into the holes 1a of the leaf spring 1, respectively, Even if a shock is applied, it will not fall off easily, and since a clearance is formed in the hole 1a of the leaf spring 1 into which the convex portion 2a is inserted, a shearing force is applied when a load is applied to the leaf spring 1. It does not, and therefore does not break.

As shown in FIG. 2B, the leaf spring 1
The same effect can be obtained even when the hole provided in the through hole is formed as the through hole 1b, and there is an advantage that the processing becomes easy.

[0013]

As described above, according to the present invention, the silencer inserted between the leaf springs can be prevented from falling off even if it wears, and the frequency of replacement during maintenance can be reduced. There is an effect that can be done.

[Brief description of drawings]

FIG. 1 is a front view showing an assembled state of a leaf spring according to an embodiment of the present invention.

2A and 2B are enlarged cross-sectional views of an A portion shown in FIG. 1 of the embodiment of the present invention.

FIG. 3 is a perspective view showing a shape of a silencer according to an embodiment of the present invention.

FIG. 4 is a partial cross-sectional view showing a mounted state of a silencer in a conventional example.

FIG. 5 is a perspective view showing a shape of a silencer in a conventional example.

[Explanation of reference numerals] 1, 11 leaf springs 1a, 11a holes 1b through holes 2, 12 silencers 2a, 2b, 12a convex portions

Claims (1)

[Claims] 1. A laminated leaf spring in which a plurality of leaf springs are stacked and a plate-shaped elastic material silencer is inserted between the leaf springs, wherein convex portions are provided on both surfaces of the silencer, The leaf spring is provided with a hole through which the convex portion is inserted, and for the hole through which at least one of the convex portions on both sides of one silencer is inserted, the hole is formed according to the load applied to the leaf spring. A leaf spring, which is a hole including a clearance in the direction in which the silencer moves relatively.