CN2227205Y

CN2227205Y - High sealing gas ring

Info

Publication number: CN2227205Y
Application number: CN95217722U
Authority: CN
Inventors: 吴国立
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-28
Filing date: 1995-07-28
Publication date: 1996-05-15
Anticipated expiration: 2005-07-28

Abstract

The utility model discloses a gas ring which is used on a piston type internal combustion engine and has permanent sealing performance. The outer side of one ring end of the gas ring is cut with a rectangular block, and a concave position (1) with three surfaces is formed. An erect shielding wall (2) at the inner side of the gas ring and a horizontal shielding wall (3) at the bottom side of the gas ring are connected, which forms a shielding wall. When the shielding wall is observed from the ring end, the shielding wall forms an L shape. The end side at the other end of the gas ring is extended with a rectangular convex block (5) which is used for being matched with the concave position (1). When the gas ring is installed on a piston, the convex block (5) is positioned in the concave position (1), and the surface with the convex block (5) is upward. When the gas ring is worn, the gap at the end side of the convex block (5) is broadened, the lower part of the gap which is broadened is provided with the shielding wall (3), and the space can be shielded. The gap along the radial direction can be shielded by the shielding wall (2). When an aboral gap appears, gas can not be leaked.

Description

The high sealing compression ring

The present invention relates to a kind of high sealing compression ring that on internal-combustion piston engine, uses.

The present compression ring that on the competition style internal-combustion engine of living, uses, its counterpart two ends all are that flush with flush plane type docks (see figure 1), the major defect of this ring is that the best time for use is too short, the so-called best time for use is flat to putting into cylinder with compression ring exactly, gap after the counterpart of compression ring two ends is minimum, compression Bizet in the cylinder can be high like this, motor just can be exported peak power, this minimum gap is exactly the best counterpart gap of best time for use thus, but wearing and tearing along with compression ring and cylinder wall, this best counterpart gap will be more and more wideer, the interior high temperature outburst gas of cylinder can be along row under the big counterpart gap of change at this moment, thereby cause the engine power deficiency, oil is ploughed and is increased, if only from Piston Compression outburst this respect, the time length that best counterpart gap keeps is directly proportional with the power of motor, the time that best in other words counterpart gap keeps is long more, and the power of motor also is the highest always.Become big as the counterpart gap, power descends thereupon, therefore want to make reciprocating engine to be in this state of output peak power for a long time, the best counterpart gap that necessarily requires compression ring is minimum for a long time and can broadening because of wearing and tearing, this requirement is not accomplished concerning present compression ring at all, because always will wear and tear between compression ring periphery and the cylinder, compression ring broadens because of the wearing and tearing expansion back natural meeting in counterpart gap, we can say that this flush and flush counterpart mode is a drawback at present.

See a kind of new compression ring of attempting to solve above-mentioned deficiency at present, it is to adopt the step that respectively stretches out the overlap joint that is used for coincideing compression ring two ends distolateral, an end wherein, and outer rim side is stretched out and is accounted for half step of ring width, and interior ring side is a unfilled corner; The other end is that outer rim side is a unfilled corner, and interior ring side is to stretch out to account for half step of ring width, has so constituted one positive one anti-two overlap joint step (see figure 2)s that match.In fact this compression ring does not solve the deficiency of using compression ring at present, this overlap joint can run counter to desire on the contrary, reason is that the overlap joint area of two steps is on the contrary greater than the above-mentioned flush and flush area that docks, wearing and tearing along with ring, big counterpart gap will inevitably appear in big interface, finally causes a large amount of gas leakage.In addition the counterpart gap in the compression ring outside is the same with common compression ring, all the wide seam that can occur communicating up and down along with the wearing and tearing of ring.The requirement on machining accuracy height of this in addition overlap joint ring mainly is that the identical requirement at two right angles and other two turnings is very tight.Even otherwise new ring also can leak gas.

The purpose of this invention is to provide a kind of counterpart gap that can not occur because of the wearing and tearing of compression ring all the time becomes and to cause the permanent compression ring of sealability that leaks gas greatly.

For achieving the above object, the technical solution used in the present invention is: the outside of a certain ring end of compression ring is processed one by the square recess that lacks trihedral one-tenth, only stay a wall in the compression ring inboard, stay a planomural in the bottom side, if from the ring end, these two continuous walls are L-shaped.This external compression ring the other end distolateral stretched out one and has been used for and the match bumping square of overlap joint of recess, this projection is a square projection of cutting out the part back formation that the ring end is inboard and the bottom side is thin of degassing, and the thin part of being cut out equates with the thickness of " L " shape shelter wall.To there be an end of projection to take an end that is placed on recess during installation.Four faces at collar extension place, overlap joint back are equal with the four sides of whole ring body.Bumping square is distolateral when compression ring weares and teares also the slit can occur, but distolateral following of projection and radially the aspect all have shelter wall to block, so can not leak gas, though penetrating wide slit can appear in the short slit of compression ring inboard, the slit of shield wall rapids (refer to upright) but this short slit just in time are in the compression on the piston, therefore can not leak gas.

Certainly also can adopt another kind of scheme, flat shelter wall with the compression ring bottom side adds longer exactly, thereby make the distolateral following shelter wall of blocking the inboard short slit of compression ring that also is useful on of upright shelter wall, go, the compression ring two ends can be coincide but the bottom side of the compression ring the other end also must be cut out accordingly.On the compression ring of this scheme,, thereby just there is not gas leak phenomenon downwards because the short slit of compression ring inboard is not penetrating yet.

Because have shelter wall to block below the counterpart gap of compression ring of the present invention, even the counterpart gap that broadens neither be penetrating downwards, change that its sealability is always best this feature during this next time so compression ring of the present invention has from setting up new the ring, so the sealing in the cylinder is best all the time.Simultaneously also because new to encircle the sealability of changing next time during this be best and stable all the time from setting up, so one pair of compression ring of the present invention, its best time for use is longer than the best time for use of common compression ring sum more than two pairs at least, can also reduce time and the expense that consumes because of frequent replacing compression ring simultaneously.

Below in conjunction with drawings and Examples the present invention is further described.

Fig. 1 is plane (top view) figure of common compression ring.

Fig. 2 is compression ring plane (top view) figure that the counterpart gap is the step type overlap joint.

Fig. 3 is a compression ring stereogram of the present invention.

Fig. 4 is the end elevation that bumping square one end is arranged in the compression ring of the present invention.

Fig. 5 is plane (top view) figure of the compression ring of the present invention behind the overlap joint.

Fig. 6 is the recess end stereogram of a shelter wall of extending in addition on the flat shelter wall of compression ring bottom side in a kind of scheme behind the present invention.

Fig. 7 is the stereogram of the compression ring projection end that matches with Fig. 6.

Fig. 8 is compression ring plane (top view) figure behind a kind of scheme overlap joint behind the present invention.

Out by Fig. 3, process a recess 1 (arrow refers to the place) that goes a square block to form by sanction in the outside of compression ring one end, remaining part is that the upright shelter wall 2 of compression ring inboard is connected with the flat shelter wall 3 of bottom side and " L " shape retaining wall forming, simultaneously in addition the compression ring end to a wall 4.Find out by Fig. 3 Fig. 4, the compression ring the other end distolateral made a bumping square 5 that matches with recess 1 that stretch out, during installation bumping square 5 is placed in the recess 1 of the compression ring the other end and gets final product, but must be with bumping square one side up.

Find out that by Fig. 5 the compression ring counterpart seam behind the overlap joint is Shape seam (compression ring among Fig. 5 is uninstalled open configuration), along with the wearing and tearing between compression ring periphery and the cylinder wall, Slit crack above the short slit 6 peaceful shield walls 3 of shape counterpart seam also can broaden, but still can play sealing effect.Because below the slit crack that broadens, have shelter wall 3 to block, compression ring radially aspect the shelter wall 2 stood in addition block, so the high-temperature gas in the cylinder can the row of descending.Though short slit 6 is mutually penetrating up and down broad gaps, it just in time is in the compression on the piston, therefore can not leak gas.

Found out that by Fig. 6 another embodiment is to make the shelter wall 7 of one of lengthening below compression ring inside stand shelter wall 2 distolateral, the part in Fig. 6 frame of broken lines is exactly the shelter wall 7 of lengthening.Find out that by Fig. 7 the other end of compression ring is compared just in the compression ring bottom side corresponding the sanction and gone one with Fig. 4, its that end with Fig. 6 is coincide overlap.Find out by Fig. 8, also impermeable slit can be blocked in the short slit 6 that broadens through the shelter wall 7 of lengthening.So can with

All block in the shape slit, thereby reach permanent gastight purpose.

Claims

1, a kind of high sealing compression ring that is used on the internal-combustion piston engine, constitute by compression ring itself, it is characterized in that: process a recess (1) that removes a square block by sanction and form in the outside of certain ring end of compression ring, this recess goes out three walls and constitutes promptly: the upright shelter wall (2) of ring side in the compression ring end, the flat shelter wall (3) of flat side and towards distolateral wall formations such as (4) of compression ring; Make one the compression ring the other end distolateral and be used for and the bumping square (5) of recess (1) kissing and overlap joint, during installation bumping square is placed on the recess and gets final product.

2, high leak tightness compression ring according to claim 1, it is characterized in that: the flat shelter wall (3) of recess end compression ring bottom side can be made into one shelter wall (7) of lengthening, makes also to be useful on the shelter wall (7) of blocking the inboard short slit of compression ring (6) below upright shelter wall (2) distolateral; The corresponding sanction in the bottom side of the bumping square (5) of the compression ring the other end gone one, thereby make the end fit overlap joint.