CN110546414A - Sealing device - Google Patents
Sealing device Download PDFInfo
- Publication number
- CN110546414A CN110546414A CN201980002076.9A CN201980002076A CN110546414A CN 110546414 A CN110546414 A CN 110546414A CN 201980002076 A CN201980002076 A CN 201980002076A CN 110546414 A CN110546414 A CN 110546414A
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- CN
- China
- Prior art keywords
- seal
- annular
- support ring
- sealing device
- peripheral surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
- F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Gasket Seals (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention provides a sealing device, which realizes the improvement of the installation workability of an annular groove arranged on a shell. A sealing device (100) provided with a sealing gasket (110) made of an elastic body and a support ring (120a) is characterized in that the support ring (120a) is composed of a plurality of split bodies (121a) which have higher rigidity than the sealing gasket (110) and are fixed to an annular notch (114) on the outer peripheral surface side, and the plurality of split bodies (121a) are configured such that adjacent split bodies (121a) are not fixed to each other and form an annular shape when all adjacent split bodies (121a) are in close contact with each other.
Description
Technical Field
The invention relates to a sealing device with a support ring.
Background
as a sealing device for sealing an annular gap between a shaft and a housing, a seal packing made of an elastic body such as rubber or urethane has been conventionally used. When the seal packing is used alone, a part of the seal packing on the side opposite to the fluid side to be sealed may be pushed out into the gap between the shaft and the housing and damaged. Therefore, the following techniques are known: by disposing the backup ring adjacent to the seal packing on the side opposite to the side of the fluid to be sealed through the seal packing, a part of the seal packing is suppressed from being pushed out into the gap between the shaft and the housing.
However, in the case of this technique, the mounting of the backup ring is forgotten or the backup ring is erroneously mounted on the side closer to the fluid to be sealed than the seal packing. This may reduce the durability life of the gasket.
In contrast, it is conceivable to form an annular notch on the inner peripheral surface side of the seal gasket on the side opposite to the fluid to be sealed, and to attach a support ring to the notch. In this case, the seal packing and the backup ring are integrated, and they can be handled as one component. Therefore, forgetting to mount the support ring or mounting the support ring by mistake can be prevented.
However, since the backup ring has higher rigidity than the seal packing, there is a problem that the work for mounting the seal device in which the seal packing and the backup ring are integrated into one body in the annular groove provided in the housing becomes difficult.
Documents of the prior art
patent document
patent document 1: japanese patent No. 5093743.
Disclosure of Invention
Problems to be solved by the invention
The invention aims to provide a sealing device which improves the installation workability of an annular groove arranged on a shell.
Means for solving the problems
In order to solve the above problems, the present invention adopts the following means.
That is, a sealing device of the present invention is a sealing device for sealing an annular gap between a shaft and a housing, the sealing device including: a seal gasket made of an elastic body and fitted in an annular groove provided in an inner peripheral surface of a shaft hole formed in the housing, the seal gasket being closely attached to a groove bottom surface of the annular groove and slidably provided on an outer peripheral surface of the shaft; and
A support ring provided in an annular cut portion formed on an inner circumferential surface side opposite to a fluid to be sealed of the seal packing, the support ring preventing a part of the seal packing from being pushed out into a gap between the shaft and the housing,
the support ring is composed of a plurality of divided bodies having higher rigidity than the seal packing and fixed to the annular notch portion on the outer peripheral surface side thereof,
the plurality of segments are configured such that adjacent segments are not fixed to each other and form a circular ring shape when all adjacent segments are in close contact with each other.
According to the present invention, the support ring is composed of a plurality of divided bodies fixed to the cut-out portion of the seal packing on the outer peripheral surface side. The plurality of divided bodies are configured such that adjacent divided bodies are not fixed to each other and form a circular ring shape when all of the adjacent divided bodies are in close contact with each other. Therefore, by pressing the seal packing radially inward from the outer peripheral surface side thereof, a part of the backup ring can be easily recessed. That is, since the divided bodies constituting the support ring are separated from each other, the entire sealing device can be deformed by the force required to deform the seal packing. Therefore, the sealing device can be easily mounted in the annular groove provided in the housing.
In addition, another sealing device of the present invention is a sealing device for sealing an annular gap between a shaft and a housing, the sealing device including:
A seal gasket made of an elastic body and fitted in an annular groove provided in an inner peripheral surface of a shaft hole formed in the housing, the seal gasket being closely attached to a groove bottom surface of the annular groove and slidably provided on an outer peripheral surface of the shaft; and
a support ring provided in an annular cut portion formed on an inner circumferential surface side opposite to a fluid to be sealed of the seal packing, the support ring preventing a part of the seal packing from being pushed out into a gap between the shaft and the housing,
The support ring includes:
a backup ring body having a higher stiffness than the seal gasket; and
An annular thin film member provided on the outer peripheral surface side of the backup ring body and having flexibility,
The support ring body is composed of a plurality of divided bodies, the outer peripheral surfaces of the divided bodies are fixed to the annular film member,
The plurality of segments are configured such that adjacent segments are not fixed to each other and form a circular ring shape when all adjacent segments are in close contact with each other.
According to the present invention, in a state in which the support ring is a single body, a part of the support ring can be easily recessed by pressing the support ring radially inward from the outer circumferential surface side. Further, if the support ring is attached to the notch portion provided in the seal packing in a state of being deformed in this way, the attachment can be easily performed even with a weak force. Then, the recessed portion is pressed radially outward to be in the original shape, whereby the annular support ring is attached to the notch portion provided in the seal packing.
In addition, when the seal device in which the seal packing and the backup ring are integrated is mounted in the annular groove provided in the housing, the seal packing can be pressed radially inward from the outer peripheral surface side thereof, whereby a part of the backup ring can be easily recessed. That is, since the split bodies constituting the backup ring body are separated from each other, the entire seal device can be deformed by the force required to deform the seal packing. Therefore, the sealing device can be easily mounted in the annular groove provided in the housing.
In the case of the present invention, the backup ring may be attached to the cut portion of the seal packing after only the seal packing is attached to the annular groove provided in the housing. In this case, the work of attaching the seal packing to the annular groove and the work of attaching the backup ring to the cut portion are also easy.
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, according to the present invention, the workability of attaching the sealing device to the annular groove provided in the housing can be improved.
drawings
Fig. 1 is a schematic cross-sectional view of a seal structure using a sealing device according to embodiment 1 of the present invention.
Fig. 2 is a rear view of the sealing device according to embodiment 1 of the present invention.
Fig. 3 is a schematic cross-sectional view of a sealing device according to embodiment 1 of the present invention.
Fig. 4 is a partially enlarged view of the sealing device according to embodiment 1 of the present invention.
Fig. 5 is a schematic view showing a state in which the sealing device according to example 1 of the present invention is mounted in an annular groove.
Fig. 6 is a schematic cross-sectional view of a seal structure using a sealing device according to embodiment 2 of the present invention.
Fig. 7 is a rear view of the sealing device according to embodiment 2 of the present invention.
Fig. 8 is a schematic cross-sectional view of a sealing device according to embodiment 2 of the present invention.
FIG. 9 is a rear view of the support ring according to embodiment 2 of the present invention.
FIG. 10 is an enlarged view of a support ring according to embodiment 2 of the present invention.
Detailed Description
Hereinafter, a mode for carrying out the present invention will be described in detail based on examples with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the present embodiment are not intended to limit the scope of the present invention to these values unless otherwise specified.
(example 1)
a sealing device according to an embodiment of the present invention will be described with reference to fig. 1 to 5. Fig. 1 is a schematic cross-sectional view of a seal structure using a sealing device according to embodiment 1 of the present invention. Fig. 2 is a rear view of the sealing device according to embodiment 1 of the present invention. Fig. 3 is a schematic cross-sectional view of a sealing device according to embodiment 1 of the present invention, which is a cross-sectional view a-a in fig. 2. Fig. 4 is a partially enlarged view of the sealing device according to example 1 of the present invention, showing a state in which a part of the sealing device is deformed. Fig. 5 is a schematic view showing a state in which the sealing device according to example 1 of the present invention is mounted in an annular groove.
< sealing Structure >
A sealing structure using the sealing device 100 according to the present embodiment will be described with reference to fig. 1. The sealing device 100 according to the present embodiment functions to seal an annular gap between the shaft 200 and the housing 300 that reciprocate relative to each other. In fig. 1, the right side across the sealing device 100 is the side where the fluid to be sealed is sealed. For convenience of explanation, in fig. 1, the right side thereof is referred to as a sealing target fluid side (H) and the left side thereof is referred to as an opposite side (L) of the sealing target fluid side (H) with the sealing device 100 interposed therebetween. The sealing device 100 is mounted in an annular groove 310, and the annular groove 310 is provided on an inner circumferential surface of a shaft hole formed in the housing 300.
The sealing device 100 includes a seal packing 110 made of an elastomer such as urethane or rubber, and a backup ring 120 a. The seal packing 110 is provided on the outer peripheral surface of the shaft 200 in close contact with the groove bottom surface of the annular groove 310 and in a slidable manner. The backup ring 120a is provided in an annular cutout portion 114, and the cutout portion 114 is formed on the inner peripheral surface side of the seal gasket 110 on the opposite side (L) to the sealing fluid side (H). The backup ring 120a functions to suppress a portion of the seal packing 110 from being extruded into a gap between the shaft 200 and the housing 300.
< sealing device >
The sealing device 100 is described in more detail. As described above, the sealing device 100 includes the seal packing 110 and the backup ring 120 a. The seal gasket 110 has: an annular main body portion (waist portion) 111; an outer peripheral lip 112 extending radially outward from the main body 111 toward the fluid to be sealed (H); and an inner peripheral lip 113 extending radially inward from the main body 111 toward the fluid to be sealed (H). The outer peripheral lip 112 is closely attached to the groove bottom surface of the annular groove 310. The inner peripheral lip 113 is slidably provided on the outer peripheral surface of the shaft 200. As described above, the seal gasket 110 is provided with the annular notch portion 114 on the inner peripheral surface side of the opposite side (L) to the sealing target fluid side (H).
The support ring 120a is composed of a plurality of divided bodies 121a, and the divided bodies 121a have higher rigidity than the seal packing 110 and are fixed to the annular notch portion 114 on the outer peripheral surface side. As a material of the support ring 120a, for example, a resin having high rigidity such as nylon, PTFE, PEEK, and PA can be used. The plurality of segments 121a are configured such that adjacent segments 121a are not fixed to each other and form a circular ring shape when all adjacent segments 121a are in close contact with each other. The plurality of segments 121a are all of the same shape. The number of the split bodies 121a is set as appropriate in accordance with the outer diameter of the support ring 120a and the like. For example, when the outer diameter is 80mm, it is preferable to provide 32 divided bodies 121 a.
A method of manufacturing the sealing device 100 will be briefly described. The sealing device 100 may be obtained by molding the sealing liner 110 and the back-up ring 120a as one body by two-color molding. Further, the sealing device 100 can also be obtained by molding the seal packing 110 in a state where the plurality of divided bodies 121a are fitted into the mold after the divided bodies 121a are molded in advance, and welding the outer peripheral surface side of each divided body 121a to the seal packing 110.
< advantages of the sealing device according to the present embodiment >
According to the sealing device 100 of the present embodiment, the backup ring 120a is formed by the plurality of split bodies 121a fixed to the cut portion 114 of the seal packing 110 on the outer peripheral surface side. The plurality of segments 121a are configured such that adjacent segments 121a are not fixed to each other and form a circular ring shape when all adjacent segments 121a are in close contact with each other. Therefore, by pressing the seal packing 110 radially inward from the outer peripheral surface side thereof, a part of the backup ring 120a can be easily recessed. That is, as shown in fig. 4, when a part of the seal packing 110 is pressed radially inward from the outer peripheral surface side (see arrow P in the figure), the segments 121a constituting the backup ring 120a are separated from each other, and therefore the entire seal device 100 can be deformed by the force necessary to deform the seal packing 110. Therefore, the sealing device 100 can be easily mounted in the annular groove 310 provided in the housing 300. Fig. 5 is a diagram showing a state in which the sealing device 100 is mounted in the annular groove 310. As shown in the drawing, the sealing device 100 is mounted in the annular groove 310 in a state of being deformed into a heart shape, and then the concave portion of the sealing device 100 is pressed radially outward (see arrow Q in the drawing), so that the sealing device 100 is restored to the original shape. Thereby, the sealing device 100 can be mounted in the annular groove 310. Fig. 5 shows the sealing device 100 in a state where the entire shape is blackened. In fig. 5, only the groove bottom surface of the annular groove 310 is shown. When the sealing device 100 is mounted in the annular groove 310, the seal packing 110 is pressed from the radially outer side to the radially inner side, and a force for fastening the outer peripheral surface acts on the backup ring 120 a. As a result, the adjacent split bodies 121a are pressed against each other, and sufficient rigidity can be obtained in the entire support ring 120a, so that the function as the support ring 120a is not impaired.
(example 2)
A sealing device according to embodiment 2 of the present invention will be described with reference to fig. 6 to 10. Fig. 6 is a schematic cross-sectional view of a seal structure using a sealing device according to embodiment 2 of the present invention. Fig. 7 is a rear view of the sealing device according to embodiment 2 of the present invention. Fig. 8 is a schematic cross-sectional view of a sealing device according to embodiment 2 of the present invention, which is a BB cross-sectional view in fig. 7. FIG. 9 is a rear view of the support ring according to embodiment 2 of the present invention. FIG. 10 is an enlarged view of a support ring according to embodiment 2 of the present invention.
< sealing Structure >
A sealing structure using the sealing device 100 according to the present embodiment will be described with reference to fig. 6. The sealing device 100 according to the present embodiment functions to seal an annular gap between the shaft 200 and the housing 300 that reciprocate relative to each other. In fig. 6, the right side across the sealing device 100 is the side where the fluid to be sealed is sealed. For convenience of explanation, in fig. 6, the right side thereof is referred to as a sealing target fluid side (H) and the left side thereof is referred to as an opposite side (L) of the sealing target fluid side (H) with the sealing device 100 interposed therebetween. The sealing device 100 is mounted in an annular groove 310, and the annular groove 310 is provided on an inner circumferential surface of a shaft hole formed in the housing 300.
The sealing device 100 includes a seal packing 110 made of an elastomer such as urethane or rubber, and a backup ring 120 b. The seal packing 110 is provided on the outer peripheral surface of the shaft 200 in close contact with the groove bottom surface of the annular groove 310 and in a slidable manner. The backup ring 120b is provided in an annular cutout portion 114, and the cutout portion 114 is formed on the inner peripheral surface side of the seal gasket 110 on the opposite side (L) to the sealing fluid side (H). The backup ring 120b functions to suppress a portion of the seal packing 110 from being extruded into a gap between the shaft 200 and the housing 300.
< sealing device >
the sealing device 100 is described in more detail. As described above, the sealing device 100 includes the seal packing 110 and the backup ring 120 b. Since the structure of the gasket 110 is the same as that of the gasket 110 shown in embodiment 1, the same structural parts are denoted by the same reference numerals, and the description thereof is omitted.
The support ring 120b includes: a support ring body 121b having higher rigidity than the seal packing 110; and an annular thin film member 122 provided on the outer peripheral surface side of the support ring main body 121 b. The support ring main body 121b is made of a resin having high rigidity such as nylon, PTFE, PEEK, and PA. The support ring main body 121b is formed of a plurality of divided bodies 121c fixed to the annular thin-film member 122 on the outer peripheral surface side. The plurality of segments 121c are configured such that adjacent segments 121c are not fixed to each other and form a circular ring shape when all adjacent segments 121c are in close contact with each other.
The method of manufacturing the support ring 120b will be briefly described. First, the carrier ring body 121b composed of a plurality of divided bodies 121c is molded by injection molding. Then, the annular film member 122 is formed by injection molding. The annular film member 122 is made of a material such as urethane, and has flexibility. The plurality of split members 121c are made of a material (such as nylon) that can be welded to the annular film member 122. As described above, the supporting ring 120b is obtained by two-color molding in a state where the plurality of divided bodies 121c are fixed to the inner peripheral surface of the annular film member 122 by welding. However, the support ring 120b can also be obtained by molding the divided bodies 121c separately and bonding the plurality of divided bodies 121c to the inner peripheral surface of the annular thin-film member 122. The plurality of segments 121c are all of the same shape. The number of the split bodies 121c is set as appropriate in accordance with the outer diameter of the support ring 120 b. For example, when the outer diameter is 80mm, it is preferable to provide 32 divided bodies 121 c.
< assembling sequence of sealing device >
In the case of the present embodiment, after the support ring 120b is attached to the cut-out portion 114 of the seal packing 110, the seal device 100 in which these are integrated can be attached to the annular groove 310 of the housing 300. In this case, the seal packing 110 and the backup ring 120b may be joined (bonded), but need not necessarily be fixed by joining or the like. Further, the seal packing 110 may be mounted in the annular groove 310 of the housing 300, and then the backup ring 120b may be mounted in the cutout portion 114 of the seal packing 110.
< advantages of the sealing device according to the present embodiment >
According to the sealing device 100 of the present embodiment, in a state where the backup ring 120b is separated, a part of the backup ring 120b can be easily recessed by pressing the backup ring from the outer circumferential surface side to the radially inner side. That is, as shown in fig. 10, when a part of the carrier ring 120b is pressed radially inward from the outer peripheral surface side (see an arrow P in the drawing), the split bodies 121c constituting the carrier ring body 121b are separated from each other, and therefore, a part of the carrier ring 120b can be easily recessed.
In addition, if the backup ring 120b is attached to the notch portion 114 provided in the seal packing 110 in a state of being deformed in this way, the attachment can be easily performed even with a weak force. That is, as in the case of mounting the seal device 100 to the annular groove 310 in a state where the entire seal device is deformed into a heart shape in embodiment 1, the seal device can be mounted to the notch portion 114 in a simple manner in a state where the backup ring 120b is deformed into a heart shape. Then, the recessed portion is pressed radially outward to be in the original shape, and the annular support ring 120b is attached to the notch portion 114 provided in the seal packing 110.
When the seal device 100 in which the seal packing 110 and the backup ring 120b are integrated is mounted in the annular groove 310 provided in the housing 300, the seal packing 110 is pressed radially inward from the outer peripheral surface side thereof, whereby a part of the backup ring 120b can be easily recessed. That is, since the split bodies 121c constituting the backup ring 120b are separated from each other, the entire sealing device 100 can be deformed by a force required to deform the seal packing 110. Therefore, the sealing device 100 can be easily mounted in the annular groove 310 provided in the housing 300.
in the case of the sealing device 100 according to the present embodiment, the backup ring 120b may be attached to the cutout portion 114 of the seal packing 110 after only the seal packing 110 is attached to the annular groove 310 provided in the housing 300. In this case, the work of attaching the seal packing 110 to the annular groove 310 and the work of attaching the support ring 120b to the cutout portion 114 are also easily performed. By mounting the seal device 100 in the annular groove 310, sufficient rigidity can be obtained over the entire backup ring 120b, and the function as the backup ring 120b is not impaired, as in the case of embodiment 1.
description of the symbols
100 sealing device
110 sealing gasket
111 main body part
112 peripheral lip
113 inner peripheral lip
114 cut-out portion
120a, 120b support ring
121a segment
121b support ring body
121c division body
122 annular thin film member
200 axle
300 casing
310 circular groove
Claims (2)
1. A seal arrangement for sealing an annular gap between a shaft and a housing, the seal arrangement comprising:
A seal gasket made of an elastic body and fitted in an annular groove provided in an inner peripheral surface of a shaft hole formed in the housing, the seal gasket being closely attached to a groove bottom surface of the annular groove and slidably provided on an outer peripheral surface of the shaft; and
A support ring provided in an annular cut portion formed on an inner circumferential surface side opposite to a fluid to be sealed of the seal packing, the support ring preventing a part of the seal packing from being pushed out into a gap between the shaft and the housing,
The support ring is composed of a plurality of divided bodies having higher rigidity than the seal packing and fixed to the annular notch portion on the outer peripheral surface side thereof,
The plurality of segments are configured such that adjacent segments are not fixed to each other and form a circular ring shape when all adjacent segments are in close contact with each other.
2. A seal arrangement for sealing an annular gap between a shaft and a housing, the seal arrangement comprising:
A seal gasket made of an elastic body and fitted in an annular groove provided in an inner peripheral surface of a shaft hole formed in the housing, the seal gasket being closely attached to a groove bottom surface of the annular groove and slidably provided on an outer peripheral surface of the shaft; and
A support ring provided in an annular cut portion formed on an inner circumferential surface side opposite to a fluid to be sealed of the seal packing, the support ring preventing a part of the seal packing from being pushed out into a gap between the shaft and the housing,
The support ring includes:
A backup ring body having a higher stiffness than the seal gasket; and
An annular thin film member provided on the outer peripheral surface side of the backup ring body and having flexibility,
The support ring body is composed of a plurality of divided bodies, the outer peripheral surfaces of the divided bodies are fixed to the annular film member,
The plurality of segments are configured such that adjacent segments are not fixed to each other and form a circular ring shape when all adjacent segments are in close contact with each other.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-052166 | 2018-03-20 | ||
| JP2018052166 | 2018-03-20 | ||
| PCT/JP2019/008386 WO2019181461A1 (en) | 2018-03-20 | 2019-03-04 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110546414A true CN110546414A (en) | 2019-12-06 |
Family
ID=67986463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980002076.9A Pending CN110546414A (en) | 2018-03-20 | 2019-03-04 | Sealing device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6756053B2 (en) |
| CN (1) | CN110546414A (en) |
| WO (1) | WO2019181461A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021113901A1 (en) * | 2021-05-28 | 2022-12-01 | Carl Freudenberg Kg | Arrangement for producing an electrically conductive connection between a first machine element and a second machine element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3235714B2 (en) * | 1996-04-19 | 2001-12-04 | 新東工業株式会社 | Core sand filling method |
| JP2007071329A (en) * | 2005-09-08 | 2007-03-22 | Nok Corp | Back-up ring |
| CN101059171A (en) * | 2007-05-25 | 2007-10-24 | 广州机械科学研究院 | XV-shape combined seal ring |
| DE102010045613A1 (en) * | 2010-09-17 | 2012-03-22 | Erich Schürmann | Seal for rotary feedthrough in tire pressure adjusting system of wheeled vehicle, has grooves that exhibit depth smaller than diameter of o-ring, and sleeve whose radial wall thickness corresponds to one-fourth of lip sealing ring width |
| US20130279834A1 (en) * | 2010-09-17 | 2013-10-24 | Imo Holding Gmbh | Peripheral sealing arrangement |
| CN106641269A (en) * | 2016-12-07 | 2017-05-10 | 新昌县东韩机械有限公司 | Novel structure wrap seal gasket |
| CN206626180U (en) * | 2017-03-28 | 2017-11-10 | 河南利诺生化有限责任公司 | A leukotrienes reactor charging aperture sealing structures |
| CN107407418A (en) * | 2015-03-16 | 2017-11-28 | Nok株式会社 | Sealing ring |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178078A (en) * | 1994-12-22 | 1996-07-12 | Nok Corp | Packing |
| JP3532714B2 (en) * | 1996-06-21 | 2004-05-31 | Ｎｏｋ株式会社 | Sealing device |
-
2019
- 2019-03-04 WO PCT/JP2019/008386 patent/WO2019181461A1/en active Application Filing
- 2019-03-04 JP JP2019549487A patent/JP6756053B2/en active Active
- 2019-03-04 CN CN201980002076.9A patent/CN110546414A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3235714B2 (en) * | 1996-04-19 | 2001-12-04 | 新東工業株式会社 | Core sand filling method |
| JP2007071329A (en) * | 2005-09-08 | 2007-03-22 | Nok Corp | Back-up ring |
| CN101059171A (en) * | 2007-05-25 | 2007-10-24 | 广州机械科学研究院 | XV-shape combined seal ring |
| DE102010045613A1 (en) * | 2010-09-17 | 2012-03-22 | Erich Schürmann | Seal for rotary feedthrough in tire pressure adjusting system of wheeled vehicle, has grooves that exhibit depth smaller than diameter of o-ring, and sleeve whose radial wall thickness corresponds to one-fourth of lip sealing ring width |
| US20130279834A1 (en) * | 2010-09-17 | 2013-10-24 | Imo Holding Gmbh | Peripheral sealing arrangement |
| CN107407418A (en) * | 2015-03-16 | 2017-11-28 | Nok株式会社 | Sealing ring |
| CN106641269A (en) * | 2016-12-07 | 2017-05-10 | 新昌县东韩机械有限公司 | Novel structure wrap seal gasket |
| CN206626180U (en) * | 2017-03-28 | 2017-11-10 | 河南利诺生化有限责任公司 | A leukotrienes reactor charging aperture sealing structures |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019181461A1 (en) | 2019-09-26 |
| JP6756053B2 (en) | 2020-09-16 |
| JPWO2019181461A1 (en) | 2020-04-30 |
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Application publication date: 20191206 |