CN201277322Y - Piston ring - Google Patents

Abstract

The utility model provides a piston ring for avoiding seizing cylinders, wherein chamfering angles are arranged on two sides of the piston ring. The utility model changes an existing piston ring into a piston ring with chamfering angles, which can effectively prevent the piston ring from embedding in a working cylinder to cause the phenomenon of seizing cylinders since the inner pressure is too big, and influence the property and service span of products, thereby prolonging the service span of a vibration damper, and improving the property of the vibration damper.

Description

Piston ring

Technical field

The utility model relates to a kind of piston ring, particularly relates to the piston ring in a kind of vehicle shock absorber damper valves.

Background technique

Piston ring in the existing vibration damper mostly adopts straight narrow ring structure, as shown in Figure 1, when this piston ring uses on the vibration damper of little damping force, because interior pressure is less, therefore less to the performance and the life-span influence of product, but become and to adapt to when being used for the big damping force of loaded vehicle, formed oil film very easily is sheared and breaks under the effect of high pressure on the clutch release slave cylinder inwall on the one hand, makes piston ring directly contact clutch release slave cylinder, thereby clutch release slave cylinder is produced the friction interlocking, influence the performance and the life-span of product, on the other hand because piston ring is narrower, swing easily in piston groove, increase the weight of the tendency of seizure of piston ring, finally caused the vibration damper performance to reduce, life-span reduces.

The model utility content

Technical problem to be solved in the utility model provides a kind of piston ring of avoiding Cylinder sticking.

The technological scheme that the utility model technical solution problem is adopted is: piston ring is provided with chamfering in described piston ring both sides.

The beneficial effects of the utility model are: the existing piston ring should be the piston ring of band chamfering, can prevent effectively that piston ring from because of internal pressure embeds clutch release slave cylinder too greatly, the Cylinder sticking phenomenon taking place, influence the performance and the life-span of product, thereby prolonged the life-span of vibration damper, improved the performance of vibration damper.

Figure of description

Fig. 1 is the sectional drawing of existing piston ring.

Fig. 2 is the sectional drawing of piston ring of the present utility model.

Embodiment:

As shown in Figure 1, the piston ring in the existing vibration damper adopts straight narrow ring structure.

Piston ring of the present utility model is the structure of wide endless belt chamfering, and as shown in Figure 2, being about to piston ring width increases, and both sides are provided with chamfering 1 simultaneously.

After piston ring of the present utility model increases chamfering and widens, on the one hand because the cutting edge on the piston ring can not produce direct shear action to oil film, therefore the oil film on the clutch release slave cylinder exists all the time, that is to say that lubrication exists always, therefore can not produce the phenomenon of friction and Cylinder sticking, thus the performance and the working life of having improved product; Owing to widened piston ring, piston ring pendulum angle in piston groove reduces, the possibility of the seizure of piston ring that weakened greatly, the performance and the working life of further having improved product on the other hand.

Claims (2)

1. piston ring is characterized in that: be provided with chamfering (1) in described piston ring both sides.

2. piston ring as claimed in claim 1 is characterized in that: described piston ring is wide ring.

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