CN104747724A - Seal ring and device comprising same - Google Patents

Abstract

The invention relates to a seal ring (10). The seal ring comprises a first sealing face (26) and at least one second sealing face (13 and 14), wherein the first sealing face (26) is arranged on the inner circumference of the seal ring, and the second sealing faces (13 and 14) are arranged on the outer circumference. At least one of the two end faces of the seal ring (10) is provided with compensation areas (17 and 18), and at least a part of each compensation area can elastically deform in the axial direction.

Description

Seal ring and the device with seal ring

Technical field

The present invention relates to a kind of seal ring as described in the preamble according to claim 1.

Background technique

Such seal ring is generally open.It is particularly installed in the accommodating part of structure member, in described accommodation section, be subject to the effect of power at axial direction sealing circle two ends.Due to the tolerance of structure member, particularly due to the tolerance of accommodating part, just can not ensure in this case to make sealing circle be able to accurate adaptation in the axial direction.In other words, or occur gap in the axial direction, in other words, sealing circle can move in the axial direction, or occurs axial compression.This extruding can cause the distortion of seal ring, and like this, primary sealing area also can deform on the radially inner side face of seal ring, consequently has a negative impact to sealing function.This means in extreme circumstances: the sealing that such as reliably can not ensure axle.

Summary of the invention

From the prior art introduced, task of the present invention is so improved further for the seal ring as described in the preamble of claim 1, namely this seal ring can be positioned in this accommodating part in the axial direction regularly, and the distortion that roughly occurs in the axial direction of seal ring does not have negative effect for the sealing function of primary sealing area.This task is accomplished in the seal ring with claim 1 feature.Wherein, design of the present invention is: the compensatory zone arranging at least in part in axial direction elastically deformable at least one end face of described two end faces of seal ring.The effect in this nose balance region is, in accommodating part, moving axially of seal ring no longer occurs when the tolerance of the structure member usually specified; And by least one compensatory zone described can absorption axes to pressure, these pressure can not cause the distortion that carry the zone line of the second sealing area of seal ring.

Some favourable improvement projects in the dependent claims for seal ring according to the present invention are illustrated.All by least two in the description, in claim and/or the in the accompanying drawings combination of disclosed feature all drops among scope of the present invention.

Specify in the particularly preferred form of implementation of one, arrange the secondary sealing area that two have axial spacing each other, they are arranged on zone line place; And at least one compensatory zone described is in axial direction connected with zone line.Can obtain particularly preferred seal action by this measure, and the radial load of seal ring is uniform.

In order to also get rid of the distortion of this zone line in the zone line of relatively flexible design, specify in another preferred form of implementation, compensatory zone is arranged in the region of the medial axis extended along the longitudinal direction of zone line.By this measure, there is not the tilting moment or the transverse force that make deformation when occurring on responsive to axial force to seal ring.

Specify in the particularly preferred improvement project of one of the present invention, described two end faces of seal ring arrange a compensatory zone respectively.By this this measure, axial force can be delivered on these two compensatory zones, like this, can obtain the elastic effect good especially of compensatory zone.In addition, when there is suddenly axial force from one of described two axial directions, and before in accommodating part, seal ring moves axially, these axial forces are just absorbed by corresponding compensating unit.

When primary sealing area be arranged on from zone line radially-inwardly outstanding and the sealing lip of flexibly springing diametrically time, can produce primary sealing area with should by good especially the mating of parts, particularly axle sealed.

When at least one compensatory zone described has so a kind of width, when namely this width is less than the width of zone line, then the deformability of the axis of compensatory zone can be ensured.

Regard to from down some preferred embodiments explanation and by means of accompanying drawing to produce other advantage of the present invention, characteristic sum details.

These accompanying drawings illustrate:

Fig. 1: according to the partial longitudinal sectional view of the gasket set of prior art;

Fig. 2: according to the perspective view of seal ring of the present invention;

The partial section of the seal ring of Fig. 3: Fig. 2; And

Fig. 4: the partial longitudinal sectional view with the device according to seal ring of the present invention according to Fig. 2.

The device of the seal ring 1 had according to prior art has been shown in Fig. 1.In this case, sealing circle 1 such as seals for axle 2, described axle circumferentially being surrounded by eccentric adjusting sleeve 3 at it.The accommodating part 4 that its partial longitudinal section a kind of is L shape is such as formed in described eccentric adjusting sleeve 3.Described accommodation section radially surrounds seal ring 1, and also accommodates this seal ring at axial direction.In the axial direction, compensating disc 5 is connected to described eccentric adjusting sleeve 3.

Seal ring 1 has secondary sealing area 7 and 8 that is that the primary sealing area that radially-inwardly arranges 6, two radially outwards are arranged and that axially arrange spaced apart from each otherly.Such a case shown in Fig. 1, described seal ring 1 exceeds the accommodating part 4 in eccentric adjusting sleeve 3 a little in this case.Therefore, there will be following situation when the axial engagement of compensating disc 5 and eccentric adjusting sleeve 3: the direction along arrow 9 applies a kind of power to seal ring 1 in the axial direction, and this power causes the distortion of seal ring 1.This distortion also causes the distortion being provided with the region of primary sealing area 6 thereon of seal ring 1.

For this situation, namely due to structure member tolerance, particularly extend large height-at this moment there will be this situation in contrast to this because eccentric adjusting sleeve 3-this eccentric adjusting sleeve described has a kind of axis than seal ring 1 in region, accommodating part 4, although namely this seal ring 1 is fully arranged in accommodating part 4, but this seal ring does not occupy the position of axially clear stipulaties here.

Now illustrate in Fig. 2 and Fig. 3 according to seal ring 10 of the present invention.This seal ring 10 has zone line 11.Axially two secondary sealing areas 13 and 14 are set spaced apart from each otherly in the side that its radially outer is observed.Between these two sealing surfaces 13 and 14, the periphery of seal ring 10 forms a kind of contraction section 15.Because this contraction section 15 just can ensure, this seal ring 10 is only just close in the accommodating part of housing on its outer circumference on two secondary sealing areas 13 and 14.Axial direction along seal ring 10 is seen, compensatory zone 17,18 is connected with zone line 11 respectively.Each compensatory zone 17,18 has the first area 19 that cross section is rectangle.Cross section is that semicircular second area 20 is connected with described first area.These second areas 20 form placement surface in this case.In addition, these two compensatory zones 17 and 18 are arranged in the region of the medial axis 22 of zone line 11.

Particularly as can finding out from Fig. 2, only have one to have interrupting portion 16 in radial directions in described two compensatory zones 17,18 or compensatory zone 17,18, like this, compensatory zone 17 or 18 one-tenth section ground are arranged.The distortion that may occur can be compensated better by this measure, or uniform pressure distribution can be reached.

On zone line 11, radially-inwardly outstanding side forms sealing lip 25.Described sealing lip carries primary sealing area 26 on its radially-inwardly outstanding side.

Is device according to Fig. 1 shown in Fig. 4, but, use be but according to seal ring 10 of the present invention.In this case, compensating disc 5 fully horizontal on the end face of eccentric adjusting sleeve 3.This causes a kind of abutting contact of described two compensatory zones 17 and 18 of seal ring 10 and the corresponding end face of compensating disc 5 or the bottom of accommodating part 4.Therefore, axial force is applied to seal ring 10 from two axial directions.But these axial forces are so absorbed by two compensatory zones 17 and 18: these region resiliently deformables, and therefore eliminate the distortion of zone line 11.

Claims (10)

1. seal ring (100), there is the primary sealing area (26) in the inner circumferential being arranged on it and at least one setting secondary sealing area (13,14) on its outer circumference, it is characterized in that, at least one end face of two end faces of seal ring (10) is arranged at least in part in axial direction can the compensatory zone (17,18) of resiliently deformable.

2. according to the seal ring described in claim 1, it is characterized in that, two axis are set and are spaced the second close of distance

Front cover (13,14), they are arranged on zone line (11) place, and at least one compensatory zone described (17,18) is in axial direction connected with zone line (11).

3. according to the seal ring described in claim 2, it is characterized in that, at least one compensatory zone described (17,18) is arranged

In the region of the medial axis (22) extended in a longitudinal direction of zone line (11).

4. according to the seal ring described in claim 3, it is characterized in that, at least one compensatory zone described (17,18) has

Recline region (20).

5. according to the seal ring described in any one in claim 1 to 4, it is characterized in that, at two of seal ring (10)

End face is arranged respectively compensatory zone (17,18).

6. according to the seal ring described in any one in claim 2 to 5, it is characterized in that, primary sealing area (26) is arranged

Radially-inwardly outstanding from zone line (11) and diametrically on resilient sealing lip (25).

7. according to the seal ring described in any one in claim 2 to 6, it is characterized in that, at least one compensating basin described

Territory (17,18) has a kind of width, and described width is less than the width of zone line (11).

8. according to the sealing described in claim 7, it is characterized in that, compensatory zone (17,18) has the first area of rectangle

(19), cross section is that semicircular second area (20) is connected with the first area of described rectangle.

9. according to the seal ring described in any one in claim 2 to 6, it is characterized in that, primary sealing area (26) is from axle

The centre be substantially arranged between described two secondary sealing areas (13,14) is seen to direction.

10. according to the seal ring described in any one in claim 1 to 9, it is characterized in that, in compensatory zone (17,18)

At least one compensatory zone segmented ground form, like this, between the single section of compensatory zone (17,18), define free space (16).