JPH0460232A - Air spring - Google Patents

Abstract

PURPOSE:To make improvements in passengers' riding comfort by installing an external stopper at the outside of a stopper having rubber and hardware laminated alternately, and in a horizontal displacement, softening a spring constant at time of low displacement, and hardening it at time of high displacement, respectively. CONSTITUTION:A bellows 1 of an air spring consists of fiber-reinforced rubber, and a large bead 1A clamps an outer cylinder 3, a top plate 2 and a large bead seat 10 through a bolt 8A. likewise a small bead 1B is held between a bead seat A and a bead seat B, and it is clamped by a bolt 8B. A laminated rubber stopper 6 is composed of plural pieces of rubber 11 and hardware 12 laminated alternately, while an upper part of the laminated rubber stopper 6 is clamped by a bead seat B5 and a bolt 9A, and the lower part by the bottom of an external stopper 7 and a bolt 9B, respectively. Horizontal displacement in the laminated rubber stopper 6 is limited to a certain constant low displacement movement alone by an inner diametral part at the upper part of the external stopper 7, thus when the external stopper 7 is in the low displacement (+ or -10-+ or -15mm), a spring constant is lowered.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to air springs for vehicles or automobiles.

[Conventional technology]

Conventional air springs for vehicles or automobiles are made of a combination of a bellows-type shock absorber made of a rubber sheet reinforced with fiber cords and laminated rubber.

[Problem that the invention seeks to solve]

Conventional air springs were constructed by alternately laminating rubber and metal as stoppers, so displacement and spring constant were directly proportional.

Passenger ride comfort at low displacement (±10 to ±15n+m)
However, conventional stoppers made of alternately laminated layers of rubber and metal give passengers an undesirable feeling of hardness even at low displacements.

[Means of solution]

Horizontal displacement around ±10 to ±15mm improves riding comfort,
The subsequent large displacement requires a characteristic that does not reduce speed when passing through a curve, and as a result of intensive research, this problem was solved by providing an external stopper (outer cylinder for stopper) around the laminated rubber, and the present invention was achieved. did.

That is, in an air spring made of a fiber-reinforced rubber sheet,
An external stopper is installed on the outside of the stopper made of alternately laminated rubber and metal layers, and when the horizontal displacement is low (±10~
This air spring is characterized by having a structure in which the spring constant is soft at times of ±15 mm) and hard at high displacements (±15 to ±100 mm).

[Embodiment]

The present invention will be explained based on the drawings.

FIG. 1 is a sectional view of the right half of the air spring of the present invention.

The bellows 1 of the air spring is made of fiber-reinforced rubber.
The large bead IA of the bellows fastens the outer cylinder 3, top plate 2, and large beat seat 10 with bolts 8A. Further, the small bead IB of the bellows is held between the bead sheet A and the bead sheet B, and in addition, the bead sheet A and the bead sheet B are tightened and fixed with bolts 8B. The laminated rubber stopper 6 is composed of a plurality of rubbers 11 and metal fittings 12 alternately, and the upper part of the laminated rubber stopper 6 is fastened to the bead sheet B5 and bolts 9A, and the lower part is fastened to the bottom of the external stopper 7 and bolts 9B.

Due to the inner diameter of the upper part of the external stopper of the present invention, the horizontal displacement of the laminated rubber stopper is limited to a certain low displacement movement! ! Irl1 will be sent.

In this way, the external stopper 7 has a low displacement (±IO to ±15
mm) brings about the effect of lowering the spring constant.

Note that the left half is symmetrical with the right half.

Figure 12 is a graph showing the relationship between the spring constant (y-axis) and displacement (X-axis) of the present invention.
5 to +100 mm increases rapidly in proportion to the displacement.

[Effect]

When we installed an air spring like the one shown in Figure 1 on a vehicle and measured the spring constant, we found that the spring constant became smaller as shown in Figure 12 between -15 mm and +15 mm, giving the occupants a softer ride. Ta.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the right half of the air spring according to the present invention.
FIG. 2 is a graph for explaining the present invention in detail. 1. Rubber bellows IA, bellows large bead part 1B, bellows small bead part 2, top plate outer cylinder bead sheet A bead sheet B Laminated rubber stopper external stopper bolt (for fastening large bead part) Bolt (for fastening hobby part) Bolt ( (For fastening the upper part of the stopper) Bolt (For fastening the lower part of the stopper) Metal fitting for rubber stopper for large bead sheet stopper Patent 81 Toyo Tires & Rubber Industries Co., Ltd. Procedural amendment (voluntary) September 1990 1゜ Incident indication 1990 patent Application No. 1 67809 2゜Name of the invention Air spring 3゜Relationship with the person making the amendment case

Claims (1)

[Claims] In an air spring made of a fiber-reinforced rubber sheet, an external stopper is provided on the outside of the stopper made of alternately laminated rubber and metal fittings.
5mm), and the spring constant at high displacement (±
15 to ±100 mm).