CN2326786Y

CN2326786Y - Improved sealing ring

Info

Publication number: CN2326786Y
Application number: CN 97218915
Authority: CN
Inventors: 张家博
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-06
Filing date: 1997-06-06
Publication date: 1999-06-30
Anticipated expiration: 2007-06-06

Abstract

The utility model relates to an improved sealing ring which is composed of a metallic ring and a rubber ring. The thickness of the metallic ring is less than the thickness of the rubber ring. Moreover, the metallic ring is inlaid at the region of the middle section of the peripheral edge of the rubber ring. The peripheral surface of the metallic ring is bared outside the peripheral surface of the rubber ring. Therefore, the utility model has the advantages that the improved sealing ring can not be easily twisted and deformed in assembly, the improved sealing ring can bear huge extrusion force, etc. The improved sealing ring can prevent radial deformation and protrusion which are produced when the sealing rubber ring is under stress. Therefore, the effect of accurate sheathing combination is obtained.

Description

A kind of improved type seal ring

The utility model is about a kind of seal ring, refer to especially a kind of be used for being provided with between water tap casket body and water source tube head prevent the packing ring that seeps water.

The utility model is at previous this further improvement more again in No. 96218499.3 " a kind of seal ring " patent case of utility application of China's proposition of claimant.

As shown in Figures 1 and 2, the seal ring 5 of above-mentioned creation case mainly is made up of a ringle 51 and 52 on a rubber-covered layer, this ringle 51 is to be subjected in this rubber-covered layer 52 is surrounded on fully, and the seal ring 5 that makes composition forms some roads sealing lug 53 in both ends of the surface up and down; When sealing circle 5 places between water control valve seat and water source tube head and bears the compressive force that screws togather assembly, seal ring 5 is located at mat the rigidity support of inner ringle 51 and is avoided producing bent twisting strain, thereby make seal ring can be secured at suitable sealing station, and it also can on average disperse crushing stress to act on each one of ring, so not only can increase the working life of seal ring, more but mat makes the sealing lug 53 on the rubber-covered laminar surface of seal ring fit tightly with the member end surface that is screwed, and reaches sealing fully and avoids the purpose that seeps water.

Though above-mentioned creation really can be reached the creation purpose that originally set, and be subjected to industry and general user's praise deeply, only in view of industry is with rapid changepl. never-ending changes and improvements to the The Research of Relevant Technology exploitation, not surplus something lost power, so the applicant is not with this complacency, be the research improvement that drops into former female case more as possible, so that it is attained in perfect practical; Especially recent, be precursor of the same trade or business to be arranged based on saving cost of material and simplifying reasons such as procedure for processing, use the casket body 1 of water control valve seat instead plastic material by original copper metal material and with the manufacturing of one injection molding method; Only because of the design of general water control valve seat casket body 1, all walls 11 at its video disc chamber resettling position are the wall thickness (as shown in Figure 1) that are thin, so its intensity more is not so good as in the past after changing plastic cement material into; And it is as described above, when seal ring 5 be added to water source tube head 6 upper ends of water control valve seat casket body 1 bottom and water tap and packing in conjunction with the time, though the seal ring 5 of former female case is subjected to the integral ring-shaped support that is subjected to ringle 51 of lower compression power and unlikely being distorted, yet its rubber-covered layer 52 will take place to the inside and outside both sides resiliently deformable of projection radially because of stressed, so change plastic cement casket body when assembling of establishing in above-mentioned, the perisporium 11 that cracks casket body chamber resettling lower end because of the excessive radial deformation projection amount of seal ring 5 pressurizeds generation is often arranged, cause the destruction of whole water control valve seat casket body and can't use, the structure of Gu Gaimifengquan is necessity that further improvement is arranged.

In view of this, the utility model is studied improvement at the deficiency of prior art, its purpose is for providing a kind of seal ring that adds improvement again, make and to be used in when screwing togather assembly between water tap casket body and water source tube head when the integral sealing ring, remove with assembling and be difficult for torsional deformation, can bear advantage such as huge extrusion strength, to guarantee that seal ring remains on outside the suitable position, and then also can avoid rubbery toroidal ring to be stressed and produce to outer periphery projection distortion and to casket body perisporium and to prop up phenomenon, but precision-fit is used in the water control valve casket body that plastic cement material is made.

Above-mentioned purpose of the present utility model is achieved in that a kind of improved type seal ring, installed between the water control valve seat and water source tube head of structure for water tap, seepage in order to anti-sealing, it is made up of a metal ring and a rubbery toroidal ring, and the thickness of this metal ring is less than the thickness of this rubbery toroidal ring, and this metal ring is embedded in the position, outer periphery stage casing of this rubbery toroidal ring, and the outer surface that makes this metal ring is open in the outer surface of this rubbery toroidal ring, the assembling that is had concurrently above-mentioned original crime in view of the above is difficult for torsional deformation, can bear advantages such as huge extrusion strength, produce outside radial deformation projection in the time of more can avoiding rubber sealing ring ring pressurized and obtain the effect of accurate fit.

The cross section of the metal ring in the utility model be " " ", " ", "  ", " Or " H " type.

It mainly is by evenly the be covered rubber material layer of one deck suitable depth of a thin metal ring circle appearance for the utility model, make and to be used in when screwing togather assembly between water tap casket body and water source tube head when the integral sealing ring, can bear compressive force and not make the ring body distortion, to guarantee that seal ring remains on suitable position, and because of the metal ring in the utility model is the position, outer periphery stage casing that is embedded in rubbery toroidal ring, and the outer surface of this metal ring is open in the outer surface of this rubbery toroidal ring, produce the phenomenon of propping up to outer periphery projection distortion and to casket body perisporium so can avoid rubbery toroidal ring to be stressed, make seal ring be able to precision-fit and be used in the water control valve casket body that plastic cement material is made, thereby more known seal ring has more practical usefulness.

For enabling further to understand structure of the present utility model, feature and other purposes, be described in detail as follows for embodiment in conjunction with the accompanying drawings now:

Fig. 1 is the use embodiment's of known seal circle a side part cut-away view;

Fig. 2 is the side of the seal ring of No. 96218499.3 " a kind of seal ring " patent cases

Cut-away view;

Fig. 3 is a side of the present utility model cut-away view;

Fig. 4 is the seal ring extrusion state of displayed map 3;

Fig. 5 is the utility model second embodiment's a side cut-away view;

Fig. 6 is the utility model the 3rd embodiment's a side cut-away view;

Fig. 7 is the utility model the 4th embodiment's a side cut-away view;

Fig. 8 is the utility model the 5th embodiment's a side cut-away view.

See also Fig. 3, the utility model embodiment's seal ring 5 mainly is made up of a metal ring 51 and a rubbery toroidal ring 52; Wherein, this metal ring 51 have and be " truncation surface of " " type; and this rubbery toroidal ring 52 has and the above-mentioned metal ring 51 rough external loop diameters that equate; and the cross section of this rubbery toroidal ring 52 is: the upper-end surface has the protuberance 521 of arc; and form the sealing lug 522 of some roads concentric in the lower end surface, makes the thickness H2 of the thickness H1 of this metal ring 51 less than this rubbery toroidal ring 52 again; During composition, this metal ring 51 is the positions, outer periphery 523 stage casing that are embedded in this rubbery toroidal ring 52, makes the outer surface 511 of this metal ring open outside this rubbery toroidal ring.

As shown in Figure 4, when seal ring 5 of the present utility model places between water control valve seat and water source tube head and bears the compressive force that screws togather assembly, on rubbery toroidal ring 52, lower end surface 521,522 resiliently deformable and fitting tightly in the end surfaces of the member that is screwed, reach fully sealing and avoid the purpose that seeps water, and the rigidity of the metal ring that the horizontal plane mat was embedded 51 of seal ring 5 supports and avoid producing torsional deformation, and utilize the resistance limit of open metal ring 51 in these rubbery toroidal ring 52 outer surfaces, avoid this rubbery toroidal ring to be stressed and, cause thin perisporium to crack plastic cement casket body to outer periphery projection distortion (as shown in Figure 4).

Moreover, stretch according to spreading out of the utility model technical conceive, wherein, the cross section of this ringle also can be set as type,  type,

Type or H type (extremely shown in Figure 8) as Fig. 5, and it is chimeric and when using at mode and rubbery toroidal ring as described above, the above-mentioned usefulness of then same attainable cost model utility, so the changing to establish also should draw together and belong to technical solutions of the utility model category, Chen Ming hereby of these metal ring cross sections.

In sum as can be known, be difficult for torsional deformation, can bear outside the advantage such as huge extrusion strength having assembling concurrently, in addition, the utility model is embedded in metal ring at the position, outer periphery stage casing of rubbery toroidal ring, and the outer surface that makes this metal ring is open in the outer surface of this rubbery toroidal ring, and then avoid rubbery toroidal ring to be stressed and to outer periphery projection distortion, and casket body perisporium is produced prop up phenomenon, make seal ring be able to precision-fit and be used in the water control valve casket body that plastic cement material is made; Therefore the more aforementioned known dust head of the utility model has more practical usefulness.

Claims

1. improved type seal ring, installed between the water control valve seat and water source tube head of structure for water tap, seepage in order to anti-sealing, it is made up of a metal ring and a rubbery toroidal ring, it is characterized in that: the thickness of this metal ring is less than the thickness of this rubbery toroidal ring, and this metal ring is embedded in the position, outer periphery stage casing of this rubbery toroidal ring, and makes the outer surface of this metal ring open in the outer surface of this rubbery toroidal ring.

2. improved type seal ring according to claim 1 is characterized in that: the cross section of described metal ring is to be " type.

3. improved type seal ring according to claim 1 is characterized in that: the cross section of described metal ring is to be the type.

4. improved type seal ring according to claim 1 is characterized in that: the cross section of described metal ring is to be the  type.

5. improved type seal ring according to claim 1 is characterized in that: the cross section of described metal ring is to be Type.

6. improved type seal ring according to claim 1 is characterized in that: the cross section of described metal ring is to be the H type.