CN2268785Y - Closed position limiting piston ring - Google Patents

Abstract

The utility model relates to a closed position limiting piston ring, which is an important fitting of a piston type internal combustion engine. The utility model solves the problem that the working gap of a single piston ring used by the internal combustion engine at home and abroad at present leaks gas. A T-shaped ring body is inserted into a ring body of an excircle recessed incision groove, and openings of two rings are staggered and formed into a combined ring; because of the spacing action of a projection in the groove, the working gap of any ring body is always covered and sealed by the other ring body to ensure the sealing reliability of the combined ring. When the utility model is used, gas and lubricant oil can be blocked from a leakage path of the working gap, the power of the internal combustion engine can be enhanced, oil consumption ca be lowered, and the period of replacing the internal combustion engine piston ring can be prolonged.

Description

Spacing sealed ring

The utility model relates to a kind of Reciprocting piston compressor device, especially stroke piston combustion engine piston ring.

There is the working clearance in the single piston ring of internal-combustion piston engine use both at home and abroad at present, and along with the ring body wearing and tearing, the working clearance of ring constantly increases, and gas leakage is on the rise, finally cause the internal-combustion engine various performance parameters constantly to reduce, Huan working life is also shorter simultaneously.

The model utility interpolation formula piston ring (application number: 95217216.x of Japanese's application in July 11 nineteen ninety-five, in on March 29th, 1996 Patent Office send authorize the utility model patent notice), it is to insert the recessed splitted groove ring body of cylindrical by type ring body, two ring body openings stagger mutually, be combined into one associative ring piston of packing into, when interpolation formula piston ring back and forth moves up and down along with piston, the recessed slotted ring of type ring body and cylindrical is known from experience generation and is relatively moved, if two ring body openings are overlapping, will lose the seal action of complementary openings.

The purpose of this utility model is the shortcoming that overcomes existing piston ring, and a kind of spacing sealed ring is provided, and improves power of IC engine, reduces oil consumption, and the prolongation internal-combustion engine is the cycle of rering more.

The utility model adopts the design of interpolation limit method, one projection (3) is arranged in the groove that departs from the recessed splitted groove ring body of cylindrical (1) opening certain distance, during the assembling of two ring bodies, the opening of type ring body (2) is assembled into associative ring one facing to the projection (3) in the recessed splitted groove ring body of cylindrical (1) groove, so not only the working clearance of arbitrary ring body is hidden by another road ring body and seals, and two ring body relatively move and be limited, guaranteed the sealing reliability of associative ring.

The utility model is owing to adopt the opening with chamfering in the horizontal component of type ring body (2) to face toward in interior projection (3) insertion groove of the recessed splitted groove ring body of cylindrical (1) groove, the vertical component of type ring body (2) is mended the recessed part of cutting of the recessed splitted groove ring body of cylindrical (1) flat, two ring bodies just are combined into associative ring one, and two ring body openings preferably stagger 180 °.Because the effect of projection (3), the opening of arbitrary ring body is cheated to be hidden by another ring body eventually and is sealed, gas and lubricant oil are blocked all the time from the working clearance leakage way during use, remedied the water foot of existing piston ring, the increase of the back working clearance of ring body wearing and tearing simultaneously reduces the sealing of ring and is overcome, this just can improve power of IC engine effectively, reduces oil consumption, prolongs the cycle that internal-combustion engine is changed the ring of living.In addition, owing to the position-limiting action of projection (3) in the groove, guaranteed the sealing reliability of associative ring.Use this associative ring, only need just much of that together on the piston, this will reduce the friction that multiple-sealed ring produces, the Economy of fuel is made moderate progress, and this wearing and tearing have been eliminated in the cancellation of intermediate seal ring, prolong the working life of cylinder body, also eliminate sticking card of intermediate seal ring and plucking fault, can reduce depth pistion and entire internal combustion engine height simultaneously, also just reduced the manufacture cost and the group ring cost of internal-combustion engine.

Accompanying drawing is the stereogram according to the biopsy cavity marker devices of the spacing sealed ring of model utility proposition

1, the recessed splitted groove ring body of cylindrical;

2, type ring body;

3, projection.

Embodiment:

The recessed splitted groove ring body of making by accompanying drawing of cylindrical (1) is to be processed into by tratitional technology with alloy cast iron or ductile cast iron material that the cylindrical bottom is recessed behind the square type ring cuts, and then adopt milling cutter to slot, at the position of departing from the opening certain distance, preferably depart from 180 ° of openings and locate to reserve projection (3) during fluting. type ring body (2) is to cut machine shaping with common steel band, Stainless Steel Band compression moulding or with the thin ring cutting of spheroidal graphite cast iron, interior angle on the opening be carried out chamfered, and is corresponding with projection (3) shape in ring body (1) groove.During installation, the opening of type ring body (2) facing to projection (3) in the recessed splitted groove ring body of cylindrical (1) groove, is inserted the recessed splitted groove ring body of cylindrical (1) to type ring body (2).The external dimension of associative ring bulk shape size after installing and common square type ring are basic identical, and the virtually any size that need not change piston and cylinder just can directly be installed and used.Must will recessed the facing down of cutting of type ring body (2) be housed during the associative ring installation.The bulk shape size of associative ring should be according to the requirement decision of different model internal-combustion engine.

Claims (1)

1, a kind of spacing sealed ring is characterized in that: the fluting shape of the recessed splitted groove ring body of cylindrical (1) is corresponding with type ring body (2), one projection (3) is arranged in the groove, the upward interior chamfer shape of type ring body (2) opening is corresponding with projection (3), and the opening of type ring body (2) inserts one associative ring of composition in the recessed splitted groove ring body of cylindrical (1) facing to projection (3).

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