CN212507856U - Dynamic seal structure for heavy hinge and dynamic seal ring thereof - Google Patents

Dynamic seal structure for heavy hinge and dynamic seal ring thereof Download PDF

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Publication number
CN212507856U
CN212507856U CN202020697512.9U CN202020697512U CN212507856U CN 212507856 U CN212507856 U CN 212507856U CN 202020697512 U CN202020697512 U CN 202020697512U CN 212507856 U CN212507856 U CN 212507856U
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China
Prior art keywords
hinge
gasket
sealing
dynamic seal
sealing ring
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Active
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CN202020697512.9U
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Chinese (zh)
Inventor
戴华
张金文
许慧玲
李斌苗
蒋灵怡
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Wuxi Fucare Industrial Co ltd
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Wuxi Fucare Industrial Co ltd
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/02—Hinges with pins with one pin
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D5/00—Construction of single parts, e.g. the parts for attachment
    • E05D5/10—Pins, sockets or sleeves; Removable pins
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D5/00—Construction of single parts, e.g. the parts for attachment
    • E05D5/10—Pins, sockets or sleeves; Removable pins
    • E05D5/12—Securing pins in sockets, movably or not
    • 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
    • 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
    • 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
    • F16J15/3268—Mounting of sealing rings
    • 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
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials

Abstract

The utility model relates to a dynamic seal structure and a dynamic seal ring for a heavy hinge, which comprises a hinge body I and a hinge body II which are mutually matched, wherein the connected end parts of the hinge body I and the hinge body II are respectively extended with a hinge part I and a hinge part II, the hinge part I and the hinge part II are arranged up and down and are jointly provided with a through shaft to realize the rotation of the hinge; the through shaft is sequentially sleeved with a movable sealing ring and a gasket, a first sealing lip of the movable sealing ring is attached to the outer side surface of the through shaft, and a second sealing lip of the movable sealing ring is attached to the gasket; the gasket is downwards embedded into the second hinge part, and an O-shaped ring is arranged in a gap between the gasket and the second hinge part; the utility model discloses the matching of well movable seal circle and gasket sets up, has protected the articulated part of hinge to avoid the erosion of rainwater and dust, has prolonged the life-span of heavy hinge for heavy hinge is more durable, and movable seal circle's structure itself makes and possesses fault-tolerant leakproofness when the axle center of articulated portion one and articulated portion two is skew.

Description

Dynamic seal structure for heavy hinge and dynamic seal ring thereof
Technical Field
The utility model belongs to the technical field of the application of heavy hinge technique and specifically relates to a heavy hinge is with moving seal structure and moving seal circle thereof.
Background
Hinges, also known as hinges, are mechanical devices used to connect two solids and allow relative rotation between them.
Hinges for heavy doors are generally required to have low drag and to resist corrosion because of the need to carry heavy loads.
The existing heavy hinges on the market are generally divided into two types of structures. One type is a mode of directly adopting the sleeve connection of an upper hinge shaft and a lower hinge shaft, the structure is open, the friction force is large when the hinge shaft and the lower hinge shaft rotate relatively, and the hinge shaft is easy to corrode and rust when meeting rainwater, so that the hinge shaft cannot be opened effectively in a rotating way, and is not suitable for outdoor occasions; the other type is an improved hinge with a bearing chamber, a shaft of an upper hinge is connected with a bearing in a bearing chamber of a lower hinge, and an interface between the bearing chamber and the shaft is sealed by an elastic rubber ring. Although the rotation retardation force of the hinge is improved, the sealing ring of the hinge is not fault-tolerant in design, and sealing cannot be realized as long as the hinge shaft and the bearing bin are slightly matched; in actual use, the installation error of the hinge is usually about 1mm, so that the bearing bin of the hinge is easy to enter water and dust, lubricating grease needs to be frequently replaced to keep the performance of the bearing bin, and the hinge is complex to maintain and high in cost; and for little excessive cooperation between this rubber circle and the hinge pin, when rainwater weather, the rainwater presses on the gasket in rubber circle outside, gets off to very easily lead to the bearing storehouse to intake for a long time, does not reach rain-proof effect.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects in the prior art and provides a dynamic sealing structure for a heavy hinge and a dynamic sealing ring thereof, wherein the dynamic sealing structure is reasonable in structure, so that the hinge is prevented from being corroded and corroded by rainwater and dust in the using process, can be used for a long time without maintenance, and keeps the performance as new.
The utility model discloses the technical scheme who adopts as follows:
a dynamic seal structure for a heavy hinge comprises a hinge body I and a hinge body II matched with the hinge body I, wherein a hinge part I and a hinge part II extend from the connected end parts of the hinge body I and the hinge part II respectively, and the hinge part I and the hinge part II are arranged up and down and are provided with a through shaft together to realize the rotation of the hinge; a gasket is sleeved on the through shaft, a first boss extends upwards from the top of the gasket, and a movable sealing ring is sleeved on the through shaft above the gasket; the dynamic seal ring comprises a first seal lip and a second seal lip, the first seal lip is sleeved on the circumferential surface of the through shaft, and the second seal lip is sleeved on the outer side surface of the first boss; the gasket is downwards embedded into the inner part of the second hinge part.
As a further improvement of the above technical solution:
the structure of the dynamic seal ring is as follows: the sealing ring comprises a sealing ring body with a circular ring structure, wherein the inner wall surface of the sealing ring body forms a first sealing lip of a movable sealing ring, and the outer edge of the sealing ring body extends downwards to form a second sealing lip.
The outer edge of the sealing ring body extends downwards and bends inwards to form a second sealing lip of a necking structure.
The outer edge of the sealing ring body and the second sealing lip are in transition through a convex structure, and the convex structure is a convex arc structure or a convex folded angle structure.
And the second sealing lip is in line sealing contact or ring surface contact with the first boss of the gasket.
An annular bulge extends on the circumferential surface of the through shaft along the circumferential direction, and a sealing lip of the dynamic sealing ring is sleeved below the annular bulge.
A bearing bin with a circular hole structure is arranged at the center of the top of the second hinged part, the through shaft penetrates through the gasket downwards, and a bearing is arranged between the end head at the lower end of the through shaft below the gasket and the inner wall surface of the bearing bin; the lower part of the gasket extends into the bearing bin, and a gap is formed between the bottom end face of the gasket and the top face of the bearing.
The structure of the gasket is as follows: the hinge comprises a sheet body with an annular structure, wherein the top and the bottom of the sheet body respectively extend outwards to form a first boss and a second boss, the second boss extends into a hinge part II, and a groove with an annular structure is formed at the joint of the bottom of the sheet body and the second boss; an inner hole is formed in the center of the upper and lower penetrating sheet body, and the inner hole is in clearance fit with the through shaft;
the gasket is made of metal and is locked on the second hinge part through a bolt, and an O-shaped ring is embedded in a groove of the gasket.
A dynamic seal ring comprises a seal ring body with a circular ring structure, wherein the inner wall surface of the seal ring body forms a first seal lip of the dynamic seal ring; the sealing ring body extends outwards to form a second sealing lip of the dynamic sealing ring.
As a further improvement of the above technical solution:
the outer edge of the sealing ring body extends downwards and bends inwards to form a second sealing lip of a necking structure.
And the outer edge of the sealing ring body and the second sealing lip are in transition through a convex structure.
The convex structure is a convex arc structure or a convex folding angle structure.
The thickness of the dynamic sealing ring decreases progressively towards the direction of the second sealing lip.
The second sealing lip is in line sealing connection or ring surface contact.
The center line of the first sealing lip and the center line of the second sealing lip are collinear.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, convenient operation, through suit movable seal circle and gasket on the through-shaft at articulated portion one and articulated portion two interval, movable seal circle suit in the below of through-shaft annular bulge, the sealing lip two of movable seal circle throat is hugged closely with the lateral surface of gasket boss one, the gasket lower part imbeds in the bearing storehouse of articulated portion two and installs the O type circle that increases the leakproofness in the junction, thereby when realizing hinge body one and hinge body two effective connections, effectively prevented rainwater and dust from getting into the rotating part of hinge, promoted the performance and the life of hinge greatly;
and the sealing lip is sleeved on the circumferential surface of the through shaft, the sealing lip is sleeved on the outer side surface of the boss I of the gasket, the sealing lip II is in linear sealing contact or ring surface contact with the boss I, when the hinge part I and the axis of the hinge part II deviate to a certain extent, the movable sealing ring can still be in effective contact fit with the through shaft and the gasket through elastic deformation of the movable sealing ring, the integral waterproof and dustproof performance of the hinge is ensured, and the existence of the movable sealing ring enables the hinge to have fault tolerance during assembly.
The utility model discloses still include following advantage:
the dynamic sealing ring extends downwards and inwards to form a second sealing lip through the transition of the convex structure, when the dynamic sealing ring is impacted by external pressure or rainwater, the outer edge of the dynamic sealing ring is contracted inwards through the convex structure, the sealing performance is stronger, and the integral connection tightness is better;
the gasket is locked on the second hinge part through the bolt, so that the sealing performance between the gasket and the second hinge part is more reliable;
the movable sealing ring is sleeved below the annular bulge, and the annular bulge axially supports and limits the movable sealing ring, so that a second sealing lip at the edge of the lower part of the movable sealing ring is always attached to the outer wall surface of the first boss at the upper end of the gasket;
a gap is formed between the lower part of the gasket and the top of the bearing, an inner hole in the middle of the gasket is sleeved with the gap of the through shaft, an inner ring and an outer ring of the bearing are fixedly connected with the through shaft and the hinged part II respectively, and the existence of the bearing ensures the smoothness of rotation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a front view (partially sectional view) of fig. 1.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is an installation schematic diagram of the dynamic seal ring, the gasket and the through shaft of the present invention.
Fig. 6 is a schematic structural diagram of the dynamic seal ring of the present invention (embodiment three).
Fig. 7 is a schematic structural diagram of the dynamic seal ring of the present invention (embodiment four).
Fig. 8 is a schematic structural diagram of the dynamic seal ring of the present invention (embodiment five).
Fig. 9 is a schematic structural diagram of the dynamic seal ring of the present invention (embodiment six).
Wherein: 1. a first hinge body; 11. a first hinge part; 2. a second hinge body; 21. a second hinge part; 3. passing through the shaft; 31. an annular projection; 4. a gasket; 40. a sheet body; 41. a first boss; 42. a groove; 43. a second boss; 44. an inner bore; 5. a bolt; 6. a movable sealing ring; 61. a second sealing lip; 62. a seal ring body; 63. a convex structure; 64. a first sealing lip; 7. and an O-shaped ring.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the dynamic seal structure for a heavy hinge in the first embodiment includes a hinge body 1, a hinge body 2 disposed in cooperation with the hinge body 1, a hinge portion 11 and a hinge portion 21 respectively extending from the end of the hinge body 1, the hinge portion 11 and the hinge portion 21 being disposed at an interval from top to bottom and jointly provided with a through shaft 3 to realize the rotation of the hinge; a gasket 4 is sleeved on the through shaft 3 at the interval between the first hinge part 11 and the second hinge part 21, a boss 41 extends upwards from the top of the gasket 4, and a movable sealing ring 6 is sleeved on the through shaft 3 above the gasket 4; as shown in fig. 5 and 6, the dynamic seal ring 6 comprises a first seal lip 64 and a second seal lip 61, the first seal lip 64 is sleeved on the circumferential surface of the through shaft 3, the second seal lip 61 is sleeved on the outer side surface of a first boss 41 on the upper part of the gasket 4, the two seal lips of the dynamic seal ring 6 are respectively attached to the through shaft 3 and the gasket 4, and certain elasticity is provided to accommodate the deviation of the axis between the two while the sealing performance of the joint of the through shaft 3 and the gasket 4 is met and ensured; as shown in fig. 3 and 4, the spacer 4 is inserted downward into the inside of the hinge portion 21.
The structure of the dynamic seal ring 6 is as follows: the dynamic sealing ring comprises a sealing ring body 62 with a circular ring structure, wherein the inner wall surface of the sealing ring body 62 forms a first sealing lip 64 of the dynamic sealing ring 6, and the outer edge of the sealing ring body 62 extends downwards to form a second sealing lip 61.
The outer edge of the sealing ring body 62 extends downwards and bends inwards to form a second sealing lip 61 with a necking structure.
The outer edge of the sealing ring body 62 and the second sealing lip 61 are transited through a convex structure 63, and the convex structure 63 is a convex arc structure or a convex folded angle structure.
Two sealing lips of the movable sealing ring 6 are respectively attached to the circumferential surface of the through shaft 3 and the circumferential surface of the first boss 41 on the gasket 4, so that the hinge body I1 and the hinge body II 2 are effectively connected, rainwater and dust are effectively prevented from entering the rotating part of the hinge, and the service performance and the service life of the hinge are greatly improved; and the existence of evagination structure 63 for dynamic seal 6 is because of the atress of evagination structure 63 department and the inside shrink of sealing lip two 61 when receiving external pressure or rainwater impact, has strengthened the leakproofness more, thereby makes the compactness of integral connection better.
The second sealing lip 61 and the first boss 41 of the gasket 4 are in elastic line sealing contact or annular surface contact; when the axes of the first hinge part 11 and the second hinge part 21 deviate to a certain extent, the movable sealing ring 6 can still be in effective contact fit with the through shaft 3 and the gasket 4 through elastic deformation of the movable sealing ring, so that the overall waterproof and dustproof performance of the hinge is ensured, and the elastic contact between the second sealing lip 61 and the gasket 4 further ensures the fault tolerance of the hinge during assembly.
An annular bulge 31 extends on the circumferential surface of the through shaft 3 along the circumferential direction, a first sealing lip 64 of the movable sealing ring 6 is sleeved below the annular bulge 31, and the annular bulge 31 axially supports and limits the movable sealing ring 6, so that a second sealing lip 61 at the lower part of the movable sealing ring 6 is always attached to a first boss 41 at the upper end part of the gasket 4.
A bearing bin with a circular hole structure is arranged at the center of the top of the second hinge part 21, the through shaft 3 downwards penetrates through the gasket 4, and a bearing is arranged between the end head of the lower end of the through shaft 3 below the gasket 4 and the inner wall surface of the bearing bin; the lower part of the gasket 4 extends into the bearing bin, and a gap is arranged between the bottom end surface of the gasket 4 and the top surface of the bearing.
The structure of the gasket 4 is: the bearing box comprises a sheet body 40 with an annular structure, wherein the top and the bottom of the sheet body 40 are respectively provided with a first boss 41 and a second boss 43 which extend outwards, the second boss 43 extends into the bearing box of the hinge part two 21, and the joint of the bottom of the sheet body 40 and the second boss 43 is provided with a groove 42 with an annular structure; an inner hole 44 is formed in the center of the upper and lower penetrating sheet body 40, and the inner hole 44 is in clearance fit with the through shaft 3;
the gasket 4 is made of metal, and the gasket 4 is locked on the second hinge part 21 through the bolt 5, so that the sealing performance between the gasket 4 and the second hinge part 21 is more reliable; an O-shaped ring 7 is embedded in the groove 42 of the gasket 4, and the O-shaped ring 7 ensures the connection tightness between the gasket 4 and the second hinge part 21.
Example two:
when the first hinge part 11 and the second hinge part 21 are vertically arranged in parallel, the gasket 4, the movable seal ring 6 and the through shaft 3 are all accommodated in the first hinge part 11 and the second hinge part 21.
Example three:
as shown in fig. 6, 7, 8 and 9, the dynamic seal ring of the present embodiment includes a seal ring body 62 having a circular ring structure, and an inner wall surface of the seal ring body 62 forms a first seal lip 64 of the dynamic seal ring 6; the seal ring body 62 extends outwards to form a second seal lip 61 of the dynamic seal ring 6.
As shown in fig. 5, the gasket 4 is sleeved on the through shaft 3, the gasket 4 is in clearance fit with the through shaft 3, the first sealing lip 64 is sleeved and attached on the circumferential surface of the through shaft 3, and the second sealing lip 61 is sleeved and attached on the outer side surface or the inner side surface of the gasket 4, so that the sealing performance of the joint of the through shaft 3 and the gasket 4 is met and ensured, and meanwhile, certain elasticity is provided for accommodating the deviation of the axes of the two.
Example four:
on the basis of the third embodiment, the outer edge of the seal ring body 62 extends downward and bends inward to form the second seal lip 61 with a necking structure, so that the second seal lip 61 is attached to the outer side surface of the upper portion of the gasket 4, and the upper portion of the gasket 4 is accommodated in the second seal lip 61.
Example five:
on the basis of the fourth embodiment, the outer edge of the sealing ring body 62 and the second sealing lip 61 are transited through the convex structure 63; due to the existence of the convex structure 63, when external pressure or rainwater impact is applied, the dynamic seal ring 6 is stressed by the convex structure 63 to contract the second seal lip 61 inwards, and the sealing performance is further enhanced.
Example six:
on the basis of the fifth embodiment, the convex structure 63 is a convex arc structure or a convex folding angle structure; the convex arc structure shown in fig. 6 and 8 or the convex bevel structure shown in fig. 9 enables external rainwater to smoothly flow down without accumulation, and the smooth flow of circumferential rainwater also enables the inward contraction of the second sealing lip 61 to be uniform and stable.
Example seven:
on the basis of the third embodiment, the thickness of the dynamic seal ring 6 decreases progressively towards the direction of the second seal lip 61, as shown in fig. 7, 8 and 9, so that the second seal lip 61 and the gasket 4 are in elastic line contact, effective sealing fit between the through shaft 3 and the gasket 4 is further ensured, and fault tolerance of connection between the through shaft 3 and the gasket 4 is enhanced.
Example eight:
on the basis of the seventh embodiment, the second sealing lip 61 is in elastic sealing line contact or annular surface contact, so that effective fit between the second sealing lip and the gasket 4 is ensured.
Example nine:
the centerline of the first lip 64 and the centerline of the second lip 61 are collinear.
The dynamic seal ring 6 is made of flexible rubber, and the flexible material ensures the sealing performance of the joint of the through shaft 3 and the gasket 4.
The utility model is simple in operation, convenient to use has effectively prevented the erosion of rainwater dust to hinge movable part, has prolonged the life of hinge to possess assembly error's fault-tolerance.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims (15)

1. A dynamic seal structure for a heavy hinge comprises a hinge body I (1) and a hinge body II (2) matched with the hinge body I (1), wherein the connected end parts of the hinge body I and the hinge body II are respectively extended with a hinge part I (11) and a hinge part II (21), and the hinge part I (11) and the hinge part II (21) are arranged up and down and are jointly provided with a through shaft (3) to realize the rotation of the hinge; the method is characterized in that: a gasket (4) is sleeved on the through shaft (3), a boss I (41) extends upwards from the top of the gasket (4), and a movable sealing ring (6) is sleeved on the through shaft (3) above the gasket (4); the dynamic seal ring (6) comprises a first seal lip (64) and a second seal lip (61), the first seal lip (64) is sleeved on the circumferential surface of the through shaft (3), and the second seal lip (61) is sleeved on the outer side surface of the first boss (41); the gasket (4) is downwards embedded into the inner part of the second hinge part (21).
2. The dynamic seal structure for a heavy duty hinge according to claim 1, wherein: the dynamic seal ring (6) is structurally characterized in that: the dynamic sealing ring comprises a sealing ring body (62) with a circular ring structure, wherein the inner wall surface of the sealing ring body (62) forms a first sealing lip (64) of a dynamic sealing ring (6), and the outer edge of the sealing ring body (62) extends downwards to form a second sealing lip (61).
3. The dynamic seal structure for a heavy duty hinge according to claim 2, wherein: the outer edge of the sealing ring body (62) extends downwards and bends inwards to form a second sealing lip (61) with a necking structure.
4. A dynamic seal structure for a heavy duty hinge according to claim 3, wherein: the outer edge of the sealing ring body (62) and the second sealing lip (61) are in transition through a convex structure (63), and the convex structure (63) is a convex arc structure or a convex folded angle structure.
5. The dynamic seal structure for a heavy duty hinge according to claim 1, wherein: the second sealing lip (61) and the first boss (41) of the gasket (4) are in sealing line contact or annular surface contact.
6. The dynamic seal structure for a heavy duty hinge according to claim 1, wherein: an annular bulge (31) extends on the circumferential surface of the through shaft (3) along the circumferential direction, and a first sealing lip (64) of the dynamic sealing ring (6) is sleeved below the annular bulge (31).
7. The dynamic seal structure for a heavy duty hinge according to claim 1, wherein: a bearing bin with a circular hole structure is arranged in the center of the top of the second hinged part (21), the through shaft (3) penetrates through the gasket (4) downwards, and a bearing is arranged between the end head of the lower end of the through shaft (3) below the gasket (4) and the inner wall surface of the bearing bin; the lower part of the gasket (4) extends into the bearing bin, and a gap is formed between the bottom end face of the gasket (4) and the top face of the bearing.
8. The dynamic seal structure for a heavy duty hinge according to claim 1, wherein: the structure of the gasket (4) is as follows: the hinge comprises a sheet body (40) with an annular structure, wherein the top and the bottom of the sheet body (40) respectively extend outwards to form a first boss (41) and a second boss (43), the second boss (43) extends into the hinge part II (21), and a groove (42) with an annular structure is formed at the joint of the bottom of the sheet body (40) and the second boss (43); an inner hole (44) is formed in the center of the upper and lower penetrating sheet body (40), and the inner hole (44) is in clearance fit with the through shaft (3);
the gasket (4) is made of metal, the gasket (4) is locked on the second hinge part (21) through a bolt (5), and an O-shaped ring (7) is embedded in a groove (42) of the gasket (4).
9. A dynamic seal ring is characterized in that: the sealing ring comprises a sealing ring body (62) with a circular ring structure, wherein the inner wall surface of the sealing ring body (62) forms a first sealing lip (64) of a dynamic sealing ring (6); the sealing ring body (62) extends outwards to form a second sealing lip (61) of the dynamic sealing ring (6).
10. A dynamic seal ring according to claim 9, wherein: the outer edge of the sealing ring body (62) extends downwards and bends inwards to form a second sealing lip (61) with a necking structure.
11. A dynamic seal ring according to claim 10, wherein: the outer edge of the sealing ring body (62) is transited with the second sealing lip (61) through a convex structure (63).
12. A dynamic seal ring according to claim 11, wherein: the convex structure (63) is a convex arc structure or a convex folding angle structure.
13. A dynamic seal ring according to claim 9, wherein: the thickness of the dynamic sealing ring (6) decreases progressively towards the direction of the second sealing lip (61).
14. A dynamic seal ring according to claim 9, wherein: and the second sealing lip (61) is in elastic sealing line contact or annular surface contact.
15. A dynamic seal ring according to claim 9, wherein: the center line of the first sealing lip (64) and the center line of the second sealing lip (61) are collinear.
CN202020697512.9U 2019-05-22 2020-04-29 Dynamic seal structure for heavy hinge and dynamic seal ring thereof Active CN212507856U (en)

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CN201920743864 2019-05-22
CN2019207438640 2019-05-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520013A (en) * 2019-05-22 2020-08-11 无锡斐冠工业设备有限公司 Dynamic seal structure for heavy hinge and dynamic seal ring thereof

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JP4141858B2 (en) * 2003-02-21 2008-08-27 株式会社荒井製作所 Hinge seal member
CN201866248U (en) * 2010-09-02 2011-06-15 郑州长城科工贸有限公司 Rotary sealing device
CN103644303A (en) * 2013-11-17 2014-03-19 苏州蓝王机床工具科技有限公司 Roller carrier shaft seal ring structure of belt conveyer
CN207728886U (en) * 2018-01-10 2018-08-14 珠海市炜达精密科技有限公司 A kind of wind driven generator principal shaft inside bearing strip sealing ring
CN111520013B (en) * 2019-05-22 2024-04-05 无锡斐冠工业设备有限公司 Dynamic sealing structure for heavy hinge and dynamic sealing ring thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520013A (en) * 2019-05-22 2020-08-11 无锡斐冠工业设备有限公司 Dynamic seal structure for heavy hinge and dynamic seal ring thereof
CN111520013B (en) * 2019-05-22 2024-04-05 无锡斐冠工业设备有限公司 Dynamic sealing structure for heavy hinge and dynamic sealing ring thereof

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CN111520013B (en) 2024-04-05

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