CN2251626Y - Bow shaped door sealing element unit assemblage - Google Patents

Abstract

The utility model relates to a bow-shaped door sealing element unit assemblage. The both sides or one side of an opening piston ring is provided with a bow-shaped concave position with no positioning or one side of the opening piston ring is provided with a positioning bow-shaped concave position, and the other side is provided with the bow-shaped concave position with no positioning or no concave position. According to the bow-shaped concave position, correspondingly a bow-shaped door with no positioning or a positioning bow-shaped door is arranged. A positioning slot is arranged in a piston groove in order to be matched with the positioning of the positioning bow-shaped door. The bow-shaped door is used for loading back the bow-shaped concave position, after the bow-shaped door is matched with a piston and a cylinder, a collar extension gap which is continuously augmented because of motion wearing can be filled and sealed continuously, the utility model can fundamentally solve the problem of gas blowby and oil pumping of the collar extension gap.

Description

The Bow door seal assembly

The utility model relates to the seal ring and the locating slot of reciprocating internal combustion engine and action machine thereof.

Usually the making and settlement of piston ring are that elastic force is outside, are made of concentric and specific interior external diameter circle opening, ring is cooperated in cylinder with piston seal.Because of there are the problem of cold shrinkage and thermal expansion in the ring and the material of cylinder, so will leaving suitable gap, collar extension just can avoid the motion heat expansion stuck or pull ring and cylinder internal surface, even cooperate the best also to wear and tear because of moving.Cylinder and ring are the to-and-fro motion friction wears, and collar extension is along circumferentially opening, and their relation is the relation of footpath and circle, no matter be that cylinder surface wear or the footpath of their relations of anchor ring wearing and tearing all concentrate in the collar extension gap with 3.1416 of circle difference at the volley.If footpath wearing and tearing be 1 collar extension gap gas blowby to scurry oil mass just be 3.1416, so the better function of reciprocating internal combustion engine and action machine thereof with bad in the sealing that on degree, depends on very much the collar extension gap.

Though the piston ring of reciprocating internal combustion engine and action machine thereof has polytype both at home and abroad at present, but use more still traditional trip ring, adopt a piston multiple-grooved to encircle the mismatch structure more and improve its sealing, or at collar extension employing locating stud retaining ring, but may produce the displacement of inertia and contingency at work or block for the porting scratch.The ring of other type also attempts to seal the problem that traditional collar extension gap gas blowby is scurried oil.Japan Patent JP60-1469-A described " piston ring device ", this ring are disjunctor monocycles greater than circle, adopt the overlapping collocation in concavo-convex inclined-plane again in collar extension, because of the collar extension processing space is little, and the required precision height, the problems such as material and mechanics that add are difficult to realize.

The purpose of this utility model is with the collar extension gap of Bow door hermetic reciprocating internal-combustion engine and action machine thereof, improves its sealing function, and the gas blowby that fundamentally solves the collar extension gap is scurried oily problem.

The utility model is finished as follows: two sides or one side collar extension place at existing opening piston ring have the arc recess in nothing location, or one side offers the arc recess in location, another side is offered not to be had the arc recess in location or does not have recess, does not have the location Bow door or the location Bow door is arranged according to the corresponding monoblock of having done of arc recess.In piston ring groove, have the locating slot that cooperates the Bow door locating bump.The collar extension gap that constantly increases because of the motion wearing and tearing can constantly be filled and seal to Bow door after piston and cylinder cooperate, in order to reinstall arc recess, fundamentally solves the problem that collar extension gap gas blowby is scurried oil.

Arc recess can be offered on the two sides of opening piston ring, also can only offer in one side.It is between the inner diameter d outer diameter D of opening piston ring, prescinds one in collar extension two ends symmetry along external diameter is tangential, forms arc recess, for there not being the arc recess in location.Arc high h1 should be less than ring thick h (radially).Be that the collar extension closure is sentenced and suitably widely radially cut one and wear to the ring inner ring again in the middle of this arc recess, form rectangular through slot, fuse to the arc recess in location is arranged with former arc recess.

Bow door should be corresponding with arc recess and size equate have monoblock arc, also have intermediate projections be locating bump the location Bow door arranged.Locating bump has Vertical location and inwardly bends two kinds of suitable angular positioning.

Locating slot is located in the piston ring groove.Curved locating slot in the circular arc, arc interior three kinds of locating slot, the circular arc Vertical location grooves of bending are arranged.Curved locating slot is at the bottom of piston ring groove in the circular arc, less than the wide b of bottom land serving as location groove width b1, becomes curved locating slot circular arc in opening the R arc groove of cutting wide b1 from (two stroke IC engine) porting best angle place, with cooperate bend suitable angle the location Bow door arranged.In arc curved locating slot be in circular arc in the curved locating slot with wide b1, the parallel chord of contact of R arc groove depth passes to the piston groove bottom surface and forms arcuate slots, with what cooperate curved suitable angle the location Bow door is arranged.Circular arc Vertical location groove is curved locating slot one side in circular arc, on former groove width b and b1 right-angle intersection, inwardly opens again to cut with former groove side and crosses right-angle intersection to R arc groove depth less than the R1 arc groove of R, and be that the side arc of R1 is dark, opposite side has differential seat angle.R arc groove links to each other with R1 arc groove and forms circular arc Vertical location groove, can cooperate vertical and curved suitable angle two kinds the location Bow door to be arranged.

Two sides or one side at the opening piston ring are offered the arc recess in nothing location, and being equipped with two or one does not again have the location Bow door, in order to reinstall arc recess ring in aggregates, are the two-door or simple gate seal ring in arc nothing location.One side at the opening piston ring offers the arc recess in location, another side is offered not to be had the arc recess in location or does not have recess, being equipped with one again has location Bow door and one not to have the location Bow door, or only joins one the location Bow door is arranged, and for arc two-door the or simple gate seal ring in location is arranged.Two one sides have the opening piston ring that does not have the arc recess in location and are overlapped into a ring back-to-back and are contained in one and add in the sipes, and being equipped with two does not have the location Bow doors, is arc nothing location simple gate two ring lap seal rings.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 has the opening piston ring plan view that does not have the arc recess in location, and Fig. 2 is that the two sides has arc recess left view, and Fig. 3 is that one side has arc recess left view.With reference to Fig. 1, Fig. 2, Fig. 3, [1] is not have the arc recess in location.

Fig. 4 is the opening piston ring plan view that has the arc recess in location, and Fig. 5 is that one side has had the arc recess in location, and another side has does not have the arc recess left view in location, and Fig. 6 is that one side has had the arc recess left view in location.With reference to Fig. 4, Fig. 5, Fig. 6, [2] are that the arc recess in location is arranged.

Fig. 7 does not have location Bow door plan view, and Fig. 8 is a left view.With reference to Fig. 7, Fig. 8, [3] are not have the location Bow door.

Fig. 9 has location Bow door plan view, and Figure 10 is a Vertical location Bow door left view, and Figure 11 is curved suitable angle Bow door left view.With reference to Fig. 9, Figure 10, Figure 11, [4] are that the location Bow door is arranged, and [5] are the Vertical location Bow doors, and [6] are curved suitable angle Bow doors.

Figure 12 is the schematic representation that has locating slot at the bottom of piston ring groove, and Figure 13 is a curved locating slot sectional view in the circular arc, and Figure 14 is arc interior curved locating slot sectional view, and Figure 15 is a circular arc Vertical location groove sectional view.With reference to Figure 12, Figure 13, Figure 14, Figure 15, [7] are locating slots, and [8] are curved locating slots in the circular arc, and [9] are arc interior curved locating slots, and [10] are circular arc Vertical location grooves.

Figure 16 does not have the location Bow door to reinstall the arc recess plan view in nothing location, and Figure 17 is a sectional view, and Figure 18 is a sectional view.With reference to Figure 16, Figure 17, Figure 18, offer the arc recess in nothing location in the two sides or the one side of opening piston ring, being equipped with two or one does not again have location Bow door [3], and ring in aggregates is the two-door or simple gate seal ring in arc nothing location.

Figure 19 has the location Bow door to reinstall the arc recess plan view in location, and Figure 20 is a sectional view, and Figure 21 is a sectional view.With reference to Figure 19, Figure 20, Figure 21, one side at the opening piston ring offers the arc recess in location, another side is offered not to be had the arc recess in location or does not have recess, be equipped with one again location Bow door [4] and a nothing location Bow door [3] are arranged, or only join one location Bow door [4] is arranged, ring in aggregates, for arc have the location two-door or simple gate seal ring.

Figure 22 does not have the location Bow door to reinstall the arc recess plan view in nothing location, and Figure 23 is a sectional view.With reference to Figure 22, Figure 23, two one sides have the opening piston ring that does not have the arc recess in location and are overlapped into a ring back-to-back, and being equipped with two does not have location Bow door [3], are arc nothing location simple gate two ring lap seal rings.

Claims (3)

1, the Bow door seal assembly of forming by opening piston ring and piston ring groove, it is characterized in that offering nothing location arc recess [1] at the two sides or the one side collar extension place of opening piston ring, or one side offers location arc recess [2], another side is offered not to be had location arc recess [1] or does not have recess, do in order to reinstall the nothing location Bow door [3] of arc recess according to arc recess is corresponding, or location Bow door [4] is arranged, in piston ring groove, have the locating slot [7] that cooperates the Bow door locating bump.

2, Bow door seal assembly as claimed in claim 1 is characterized in that saidly having location Bow door [4] to have locating bump, locating bump to have vertical and two kinds of curved suitable angles, forms Vertical location Bow door [5] and bends suitable angular positioning Bow door [6].

3, Bow door seal assembly as claimed in claim 1 is characterized in that said locating slot comprises that R arc groove, arcuate slots, R arc groove link to each other with a side R1 arc groove, forms curved locating slot [8] in the circular arc, arc interior curved locating slot [9] and circular arc Vertical location groove [10].

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