CN2695658Y

CN2695658Y - Assembling piston gaseous ring with positioning sealing

Info

Publication number: CN2695658Y
Application number: CN 200420033278
Authority: CN
Inventors: 于凌君; 于子光
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-15
Filing date: 2004-03-15
Publication date: 2005-04-27
Anticipated expiration: 2014-03-15

Abstract

The utility model relates to an assembling piston gaseous ring with positioning sealing for engine, comprising a lower ring (1), an upper ring (2) which is folded on the lower ring (1). The assembling piston gaseous ring with positioning sealing is characterized in that one end of the cut of the lower ring (1) is provided with a notch (3); an L-shaped positioning sealing sheet (4) is welded in the notch (3); the vertical part of the positioning sealing sheet (4) is projected above the lower ring (1); the two ends of the cut of the upper ring (2) are provided with positioning notches (5) corresponding to the two sides of the vertical part of the positioning sealing sheet (4); the cut of the lower ring (1) and the cut of the upper ring (2) are mutually staggered. The utility model has the advantages of simple structure, reliable positioning, good sealing performance, easy manufacturing, and easy installation.

Description

The built-up piston compression ring seals in the location

Technical field

The utility model relates to engine fittings, is specifically related to the location and seals the built-up piston compression ring.

Background technique

Traditional piston gas ring is the monocycle that has straight cut, is contained on the piston with after cylinder body cooperates, though the contact of otch two ends, but still have straight-through gas leakage gap.In order to strengthen sealing to cylinder body, this piston gas ring in 2-3 road is housed on piston usually, and otch is staggered mutually, form the sealing configuration of " labyrinth " formula.The sealing configuration of this throttle type working principle, though the effect of certain enhanced leaktightness is arranged, but still have the defective of leakage gas.Particularly in use, each piston gas ring otch can occur and align mutually, cause the phenomenon of short circuit gas leakage that the significant sealing affection variation takes place.In order to improve the sealability of piston gas ring, people have designed the main ring of band seal plate and the built-up piston compression ring of superimposed inner loop formation on main ring, and the otch of main ring and inner loop is staggered mutually, to strengthen sealability.Because being connected to bonding or pegging graft of seal plate and main ring, seal plate comes off easily in the use, thereby poor reliability, and structure is complicated, makes and install all inconveniences.

Summary of the invention

The purpose of this utility model provides a kind of location and seals the built-up piston compression ring, and it is simple in structure, the location is reliable, good airproof performance, and makes easily and install.

The built-up piston compression ring is sealed in location described in the utility model, comprise ring (1), superimposed down at the upward ring (2) that encircles down above (1), it is characterized in that being provided with notch (3) at an end that encircles (1) otch down, be welded with the location seal plate (4) of " L " shape in the notch (3), the vertical part of location seal plate (4) is protruded down above the ring (1); The two ends of last ring (2) otch be equipped with locating notch (5) and with the vertical both sides corresponding matching of part of location seal plate (4), encircle the otch of (1) and the otch of last ring (2) staggers mutually down.Because the end in following rings cut is welded with the location seal plate, superimposed superincumbent two ends of going up rings cut are provided with locating slot, and be fastened on the vertically both sides of part of location seal plate, so, the otch of ring and the otch of last ring are remained mutually to be staggered, thereby it is improved sealability, and easy for installation.The utility model adopts laser welding method will locate seal plate and is fixedly connected on down in the notch of an end of rings cut, so, do not influence the mechanical property of encircling down, locate seal plate and in use can not come off, thereby improved reliability.

The built-up piston compression ring is sealed in described location, it is characterized in that the thickness that encircles (1) and last ring (2) down equates.Be convenient to manufacturing like this and install and use.

The utility model is compared with existing built-up piston compression ring, has simple in structure, reliable, the good airproof performance in location, the advantage of making easily and installing.

Description of drawings

Fig. 1 (a) is the schematic representation of the utility model user mode, (b) is the plan view of (a).

Fig. 2 (a) is the structural representation that encircles down, (b) is the plan view of (a).

Fig. 3 (a) is a structural representation of going up ring, (b) is the plan view of (a).

Embodiment

Referring to Fig. 1, adopt bottom that laser welding method will the location seal plate 4 of " L " type to be welded on down to encircle in the notch 3 that 1 otch left end is provided with, make the vertical part of location seal plate 4 protrude under encircle above 1, then, pack in the annular groove of piston encircling 1 down, to go up again that ring 2 is packed in the annular groove of piston and superimposed down above the ring, make locating slot 5 that ring 2 otch two ends are provided with and location piece 4 vertically partly both sides corresponding matching get final product.

Claims

1, the built-up piston compression ring is sealed in the location, comprise ring (1), superimposed down at the upward ring (2) that encircles down above (1), it is characterized in that being provided with notch (3) at an end that encircles (1) otch down, be welded with the location seal plate (4) of " L " shape in the notch (3), the vertical part of location seal plate (4) is protruded down above the ring (1); The two ends of last ring (2) otch be equipped with locating notch (5) and with the vertical both sides corresponding matching of part of location seal plate (4), encircle the otch of (1) and the otch of last ring (2) staggers mutually down.

2, the built-up piston compression ring is sealed in location according to claim 1, it is characterized in that the thickness that encircles (1) and last ring (2) down equates.