CN205383261U - Sealing device - Google Patents
Sealing device Download PDFInfo
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- CN205383261U CN205383261U CN201620010453.7U CN201620010453U CN205383261U CN 205383261 U CN205383261 U CN 205383261U CN 201620010453 U CN201620010453 U CN 201620010453U CN 205383261 U CN205383261 U CN 205383261U
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- sealing ring
- ring parts
- sealing
- bending section
- sealing device
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Abstract
The utility model provides a sealing device, sealing device can suppress the damage of the 1st sealing washer parts through the position of the preceding tip of the 1st packing ring parts of optimization effectively to can follow the 1st sealing washer part of back side mounting spur steady in a long -term. Sealing device (1) possesses: the 1st sealing washer parts (10) of elastomer that have the 1st drum portion (11), the 1st sealed lip (13) and the 1st flexion (12), be located the back side of sealing washer part (10) to have and connect airtight and the 2nd drum portion (21) of extending and the 1st packing ring part (20) of metal system of crooked the 2nd flexion (22) corresponding to the back (12a) of the 1st flexion (12) with the back of the 1st drum portion (11). The 2nd flexion (22) have the preceding tip (22a) that reduces the orientation extension of internal diameter to the most inboard diameter position P1 at the back (12a) of comparing the 1st flexion (12).
Description
Technical field
This utility model relates to a kind of sealing device, and described sealing device seals between the rotating shaft in having the housing of axis hole and being inlaid in the axis hole of this housing, it is prevented that is accommodated in the fluid that sealed sealing in space and leaks into atmospheric side.
Background technology
As existing sealing device, such as known a kind of sealing device, described sealing device, for sealing around the rotating shaft of the compressor in the conditioner of automobile etc., maintains, by the sealing ring parts slipped at the outer peripheral face of rotating shaft, the sealing state sealing space.The sealing ring parts constituting such sealing device are formed by elastomeric materials such as the rubber of sealing excellence, the outer peripheral face of the sealed lip and rotating shaft that are configured to be positioned at the front end of sealing ring parts contacts all the time, using as sealed object be filled in the machine of compressor in space sealed fluid, i.e. refrigerant gas, seal oil, space in machine is made to become sealing space, it is prevented that to be sealed fluid from spatial leaks in machine to outside.
Existing sealing device is shown partially in Fig. 1, has the 1st sealing ring parts 100 and the 1st washer part 200 of rear side that is that be positioned at the 1st sealing ring parts 100 and that seal opposition side, side, space.1st sealing ring parts 100 have: the outer circumferential side of rotating shaft 900 (representing the outer peripheral face position of rotating shaft 900 in Fig. 1 with double dot dash line) be formed concentrically cylindrical shape the 1st cylindrical portion 110, can and sliding the 1st sealed lip 130 of the outer peripheral face of rotating shaft 900 and by the 1st cylindrical portion the 110 and the 1st sealed lip 130 between link, be positioned at the shape with the back side sealing side, space opposite side and be formed the 1st bending section 120 of substantially arc-shaped.It addition, the 1st washer part 200 has: the back side being closely contacted on the 1st cylindrical portion 110 the 2nd cylindrical portion 210 extended and start and the back side 120a of the 1st bending section 120 the 2nd bending section 220 bent accordingly from the 2nd cylindrical portion 210.
In the composition of the 1st sealing ring parts 100 shown in Fig. 1, when being sealed surface that fluid pressure puts on the 1st sealing ring parts 100, that seal side, space, 1st sealing ring parts 100 are pressed onto atmospheric side from sealing space thruster, 1st bending section 120, particularly the substantially arc-shaped part of back side 120a contact with the leading section 220a of the 2nd bending section 220 of the 1st washer part 200, particularly front end corner part 230, front end corner part 230 easily cuts the back side 120a of the 1st bending section 120.When this incision state for extended periods continues to occur or repeatedly occur intermittently, the cutting into position of the 1st bending section 120 chaps, this be full of cracks is propagated at the thickness direction of the 1st bending section 120, may finally cause that the 1st sealing ring parts 100 damage, if the 1st sealing ring parts 100 damage, then there is the problem being unable to maintain that the sealing state sealed between space and air.
Utility model content
Utility model problem to be solved
The purpose of this utility model is in that to provide a kind of sealing device, described sealing device is by optimizing the position, leading section of the 1st washer part, can effectively suppress the damage of the 1st sealing ring parts, and the 1st sealing ring parts acted on by sealing fluid pressure can be supported from rear side steadily in the long term.
For solving the means of problem
In order to achieve the above object, described in purport of the present utility model is constructed as follows.
(1) a kind of sealing device, described sealing device seals between the rotating shaft in having the housing of axis hole and being inlaid in the above-mentioned axis hole of this housing, the fluid sealed in space is sealed, it is characterized in that, described sealing device possesses the 1st sealing ring parts of elastic system and metal 1st washer part, 1st sealing ring parts of described elastic system have: the outer circumferential side at above-mentioned rotating shaft is concentric and becomes the 1st cylindrical portion formed cylindricly, the 1st sealed lip that can slip with the outer peripheral face of above-mentioned rotating shaft, and will link between above-mentioned 1st cylindrical portion and above-mentioned 1st sealed lip, and it is positioned at the shape with the back side of side, above-mentioned sealing space opposite side and is formed the 1st bending section of substantially arc-shaped；Described metal 1st washer part is positioned at the rear side of the 1st sealing ring parts, and has: touch with the back side of above-mentioned 1st cylindrical portion and the 2nd cylindrical portion that extends and the 2nd bending section starting the back side corresponding to above-mentioned 1st bending section from the 2nd cylindrical portion and bending；Above-mentioned 2nd bending section of the 1st washer part has the most inside diameter position at the back side towards above-mentioned 1st bending section comparing above-mentioned 1st sealing ring parts and reduces the leading section that the direction of internal diameter extends.
(2) sealing device described in above-mentioned (1), it is characterized in that, also there is resinous 2nd sealing ring parts and metal 2nd washer part, described resinous 2nd sealing ring parts are positioned at the rear side of above-mentioned 1st washer part, have the 2nd sealed lip that can slip with the outer peripheral face of above-mentioned rotating shaft；Described metal 2nd washer part is positioned at the rear side of the 2nd sealing ring parts, supports above-mentioned 2nd sealing ring parts.
(3) sealing device described in above-mentioned (2), it is characterized in that, above-mentioned sealing device also has the cylindrical case receiving above-mentioned 1st sealing ring parts, above-mentioned 1st washer part, above-mentioned 2nd sealing ring parts and above-mentioned 2nd washer part, and this cylindrical case has for installing and above-mentioned axis hole at outer circumferential side.
Utility model effect
According to this utility model, a kind of sealing device can be provided, 2nd bending section of the 1st washer part of described sealing device has and reduces, towards compared with the most inside diameter position at the back side of the 1st bending section of the 1st sealing ring parts of elastic system, the leading section that the direction of internal diameter extends, it is possible to effectively suppress the damage of the 1st sealing ring parts, it is possible to support the 1st sealing ring parts being sealed fluid pressure effect steadily in the long term from rear side.
Accompanying drawing explanation
Fig. 1 illustrates that the mutual alignment relation of the 2nd bending section of the 1st bending section in existing sealing device, the 1st sealing ring parts and the 1st washer part and amplifies the partial sectional view of display.
Fig. 2 is the half sectional view of sealing device of the present utility model, and the equipping position of rotating shaft when being inlaid in the axis hole of housing in is represented by dashed line.
Fig. 3 is the phantom of part the enlarged representation only choosing the region S with tetragon encirclement shown in Fig. 2.
Symbol description
1 sealing device
1st sealing ring parts of 10 elastic systems
11 the 1st cylindrical portion
12 the 1st bending sections
The 12a back side
13 the 1st sealed lips
14 the 1st heavy wall base portions
20 metal 1st washer parts
21 the 2nd cylindrical portion
22 the 2nd bending sections
22a leading section
23 front end corner part
24 the 1st flanged base
30 the 2nd sealing ring parts
31 the 2nd flanged base
32 the 2nd sealed lips
40 metal 2nd washer parts
41 draw rings
50 reinforcing rings
60O shape circle
70 cylindrical cases
71 annular recessed portion
72 the 3rd cylindrical portion
73 caulking parts
80 housings
81 axis holes
The inner peripheral surface of 82 axis holes
90 rotating shafts
91 rotation axiss
100 the 1st sealing ring parts
110 the 1st cylindrical portion
120 the 1st bending sections
The 120a back side
130 the 1st sealed lips
200 the 1st washer parts
210 the 2nd cylindrical portion
220 the 2nd bending sections
220a leading section
230 front end corner part
900 rotating shafts
910 rotation axiss
The most inside diameter position of P1 back side 12a
The most inside diameter position of P2 back side 120a
The position of Q1 leading section 22a
The position of Q2 leading section 220a
The internal diameter of the most inside diameter position at the back side of D1 the 1st bending section
The internal diameter of the position of the leading section of D2 the 2nd bending section
X seals space
Y air
S region
Detailed description of the invention
It follows that limit is with reference to accompanying drawing, limit embodiment of the present utility model described below.
Fig. 2 is the half in the vertical section according to sealing device 1 of the present utility model, and Fig. 3 only chooses part the enlarged representation of the region S with tetragon encirclement shown in 2.
Sealing device 1 shown in Fig. 2 mainly has the 1st sealing ring parts the 10 and the 1st washer part 20.
1st sealing ring parts 10 are elastic system, have: outer circumferential side and rotating shaft 90 at rotating shaft 90 are formed concentrically the 1st cylindric cylindrical portion 11；The 1st sealed lip 13 that can slip with the outer peripheral face of rotating shaft 90；To link and be shaped generally as towards the back side 12a with the air Y side sealing space X opposite side the 1st bending section 12 of arc-shaped between 1st cylindrical portion the 11 and the 1st sealed lip 13.It addition, the 1st sealing ring parts 10 shown in Fig. 2 also have the end being attached at that be positioned at the 1st cylindrical portion 11 and that the 1st bending section 12 links end opposite side, the 1st heavy wall base portion 14 extended to radial outside.The leading section of the 1st sealed lip 13 contacted with the outer peripheral face of rotating shaft 90 tiltedly extends towards rotating shaft 90 and to sealing space X inclination, outer peripheral face relative to the rotating shaft 90 rotated centered by rotation axis 91, generation elastic deformation in the way of small area of contact close contact, thus becoming low contact resistance, improve the leading section of the 1st sealed lip 13 surface pressing to the outer peripheral face of rotating shaft 90, it is possible to play sealing function, it is prevented that sealed fluid from sealing space X and leak into air Y side.
1st washer part 20 is metal system, it is positioned at the rear side of the 1st sealing ring parts 10, there is the back side with the 1st cylindrical portion 11 and touch and the 2nd cylindrical portion 21 that extends and extend and correspond to the back side of the 1st bending section 12 from the 2nd cylindrical portion 21 and the 2nd bending section 22 that bends.1st washer part 20 is formed by metallic plates such as steel plates, in order to press, at the fluid that sealed sealed in space X, the 1st sealing ring parts 10 acted on from back support, arranges to limit its deformation.2nd bending section 22 of the 1st washer part 20 has the leading section 22a extended to radially inner side.It addition, the 1st washer part 20 shown in Fig. 1 also has the 1st flanged base 24 extended from the 2nd cylindrical portion 21, air Y side one end to radial outside.1st washer part 20 is sandwiched between the 1st sealing ring parts 10 and resin-made described later 2nd sealing ring parts 30 at the 1st flanged base 24.
And then, sealing device 1 shown in Fig. 2 illustrates the example of an embodiment, from the viewpoint of the sealing improved further between inner peripheral portion and the outer peripheral face of rotating shaft 90 of sealing device 1, there are resinous 2nd sealing ring parts 30, described resinous 2nd sealing ring parts 30 are positioned at the rear side of the 1st washer part 20, have the 2nd sealed lip 32 that can slip with the outer peripheral face of rotating shaft 90.2nd flanged base 31 of the ring-type that the 2nd sealing ring parts 30 are configured by the back side of close contact the 1st heavy wall base portion 14 of the 1st sealing ring parts 10 and the 1st flanged base 24 of the 1st washer part 20 and from the 2nd flanged base 31 towards rotating shaft 90 and to sealing that space X rolls tiltedly and the 2nd sealed lip 32 extended is constituted.2nd sealing ring parts 30 are when rotating shaft 90 is flush-mounted in the axis hole 81 of the housing 80 being mounted with sealing device 1, there is elastic deformation in the same manner as the 1st sealed lip 13 of the 1st sealing ring parts 10, be in the state of the outer peripheral face that can be close contact in rotating shaft 90 slidingly.Material as the 2nd sealing ring parts 30, it does not have be particularly limited to, for instance the synthetic resin material of the low frictional properties such as politef (PTFE) is preferably used.
And then, in the sealing device 1 shown in Fig. 2, in order to improve the sealing between the outer peripheral face of rotating shaft 90, metal 2nd washer part 40 also there is the rear side being positioned at the 2nd sealing ring parts 30, supporting the 2nd sealing ring parts 30 further.
Fig. 2 provides the example of an embodiment, and sealing device 1 also has at the draw ring 41 that sealing device 1 is used for lodge drawing fixture from drawing outside the inner circumferential of housing 80 and when dismantling in the rear side of the 2nd washer part 40.
Additionally, sealing device 1 shown in Fig. 2 also has the cylindrical case 70 of storage the 1st sealing ring parts the 10, the 1st washer part the 20, the 2nd sealing ring parts the 30 and the 2nd washer part 40, and this cylindrical case 70 has the annular recessed portion 71 of the O 60 of the elastically deformable touched for the inner peripheral surface 82 installed with axis hole 81 at outer circumferential side.Thereby, it is possible to the sealing guaranteed between the peripheral part of sealing device 1 and the inner peripheral surface of housing 80.Annular recessed portion 71 is formed on the end of the sealing space X side of cylindrical case 70, end in the air Y side of cylindrical case 70, the caulking part 73 of lateral buckling in oriented radial direction is set, and then, cylindrical case 70 have by between annular recessed portion 71 and caulking part 73 link and rotating shaft 90 be formed concentrically cylindrical shape the 3rd cylindrical portion 72.Additionally, cylindrical case 70 is configured to, it is possible at chien shih the 1st sealing ring parts the 10, the 1st washer part the 20, the 2nd sealing ring parts the 30 and the 2nd washer part 40 of annular recessed portion 71 and caulking part 73 with the receiving state touched each other, be pressed into via the O 60 being arranged on annular recessed portion 71 and be arranged in the axis hole 81 of housing 80.The external diameter of O 60 is set to more bigger than the maximum outside diameter of cylindrical case 70 in fig. 2, but when being flush-mounted in the axis hole 81 of housing 80 by sealing device 1, O 60 elastic deformation is roughly the same with the outer peripheral face of cylindrical case 70 and fixing by contiguity to diameter.
It addition, the sealing device 1 shown in Fig. 2 the 1st sealing ring parts 10, particularly the inside of the 1st heavy wall base portion 14 be embedded with reinforcing ring 50, thus, be embedded in sealing device 1 time keep the 1st heavy wall base portion 14 shape, it is possible to more closely setting-in sealing device 1.
nullThis utility model principal character on constituting is as shown in Figure 3，It is in that the leading section 22a optimizing the 2nd bending section 22 of the 1st packing ring 20 position Q1 relative to the back side of the 1st bending section 12 of the 1st sealing ring parts 10，More specifically，2nd bending section 22 of the 1st washer part 20 has and reduces, at the most inside diameter position P1 of the back side 12a of the 1st bending section 12 comparing the 1st sealing ring parts 10, the leading section 22a that the direction of internal diameter extends，By adopting this composition，Even if the 1st sealing ring parts 10 are when being sealed fluid pressure and being pressed to air Y side，The phenomenon of the back side 12a of the 1st bending section 12 of the 1st sealing ring parts 10 of elastic system is contacted and cut into without the front end corner part 23 of leading section 22a of the 2nd bending section 22 that metal 1st washer part 20 occurs，Result is it can be avoided that the damage of the 1st sealing ring parts 10.
The relation of position Q1 of leading section 22a of the 2nd bending section 22 of most inside diameter position P1 and the 1 packing ring 20 of back side 12a for the 1st bending section 12 of the 1st sealing ring parts 10, as shown in Figure 3, the inside meter at the most P1 place, inside diameter position of the back side 12a of the 1st bending section 12 is shown as D1, when the inside meter at the Q place, position of the leading section 22a of the 2nd bending section 22 is shown as D2, sealing device 1 of the present utility model must is fulfilled for the relation of D1 > D2, the leading section 22a of the 2nd bending section 22 being thus configured to the 1st washer part 20 is prominent to radially inner side from the most inside diameter position at the back side of the 1st bending section 12 of the 1st sealing ring parts 10.
It is directed to this, when the existing sealing device shown in Fig. 1, the relation of position Q2 of leading section 220a of the 2nd bending section 220 of most inside diameter position P2 and the 1 packing ring 200 of back side 120a for the 1st bending section 120 of the 1st sealing ring parts 100, when the inside meter at the most P2 place, inside diameter position of the back side 120a of the 1st bending section 120 is shown as D1, the inside meter at the Q2 place, position of the leading section 220a of the 2nd bending section 220 is shown as D2, there is the relation of D2 > D1.In this relation, the leading section 220a of the 2nd bending section 220 of the 1st washer part 200 is in the most inside diameter position P2 of the back side 120a of the 1st bending section 120 than the 1st sealing ring parts 100 by radial outside, and the front end corner part 230 of the 2nd bending section 220 of the 1st washer part 200 contacts the back side 120a of the 1st bending section 120.In such composition, the front end corner part 230 of the leading section 220a of the 2nd bending section 220 of metal 1st washer part 200 cuts the back side 120a of the 1st bending section 120 of the 1st sealing ring parts 100 of elastic system, and the 1st sealing ring parts 100 easily separate, from this switch-in part, breakage of beginning.
The back side 12a of the 1st bending section 12,120,120a and the 1 washer part 20,200 the 2nd bending section 22,220 contact state under, produce stress at back side 12a, 120a of the 1st bending section 12,120.When sealing device 1 being installed on rotating shaft and press-in is arranged in housing, in existing composition shown in Fig. 1, to when the back side 120a of the 1st bending section 120 VonMises stress (Feng meter Si stress) produced is measured, result is 2.4MPa, and in the composition of the present utility model shown in Fig. 3, result is 1.6MPa, and the VonMises stress produced at the 1st bending section 12 is reduced to 2/3rds.
Industrial applicability
According to this utility model, a kind of sealing device 1 can be provided, 2nd bending section 22 of the 1st washer part 20 of described sealing device 1 has the leading section 22a extended towards the direction reducing internal diameter compared with the most inside diameter position of the back side 12a of the 1st bending section 12 of the 1st sealing ring parts 10, it is possible to effectively suppress the damage of the 1st sealing ring parts 10, and the 1st sealing ring parts 10 being sealed fluid pressure effect can be supported from rear side steadily in the long term.
Claims (3)
1. a sealing device, described sealing device seals between the rotating shaft in having the housing of axis hole and being inlaid in the described axis hole of this housing, and the fluid sealed in space is sealed, it is characterised in that
Described sealing device possesses the 1st sealing ring parts of elastic system and metal 1st washer part,
Described 1st sealing ring parts have: described rotating shaft outer circumferential side with one heart and become cylindric formed the 1st cylindrical portion,
Can 1st sealed lip sliding with the outer peripheral face of described rotating shaft and
To link between described 1st cylindrical portion and described 1st sealed lip, be positioned at the shape with the back side of side, described sealing space opposite side and be formed the 1st bending section of substantially arc-shaped,
Described 1st washer part is positioned at the rear side of the 1st sealing ring parts, and has:
The 2nd cylindrical portion touched with the back side of described 1st cylindrical portion and extend and
The 2nd bending section starting the back side corresponding to described 1st bending section from the 2nd cylindrical portion and bend,
Described 2nd bending section of the 1st washer part has the most inside diameter position at the back side towards described 1st bending section comparing described 1st sealing ring parts and reduces the leading section that the direction of internal diameter extends.
2. sealing device according to claim 1, it is characterised in that also there is resinous 2nd sealing ring parts and metal 2nd washer part,
Described 2nd sealing ring parts are positioned at the rear side of described 1st washer part, have the 2nd sealed lip that can slip with the outer peripheral face of described rotating shaft,
Described 2nd washer part is positioned at the rear side of the 2nd sealing ring parts, is used for supporting described 2nd sealing ring parts.
3. sealing device according to claim 2, it is characterized in that, described sealing device also has the cylindrical case receiving described 1st sealing ring parts, described 1st washer part, described 2nd sealing ring parts and described 2nd washer part, and this cylindrical case has the annular recessed portion of the O of the elastically deformable touched for the inner peripheral surface installed with described axis hole at outer circumferential side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-000106 | 2015-01-13 | ||
| JP2015000106U JP3196643U (en) | 2015-01-13 | 2015-01-13 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383261U true CN205383261U (en) | 2016-07-13 |
Family
ID=52986277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620010453.7U Active CN205383261U (en) | 2015-01-13 | 2016-01-06 | Sealing device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3196643U (en) |
| CN (1) | CN205383261U (en) |
-
2015
- 2015-01-13 JP JP2015000106U patent/JP3196643U/en active Active
-
2016
- 2016-01-06 CN CN201620010453.7U patent/CN205383261U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP3196643U (en) | 2015-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |