CN207893036U - Damper sealing device - Google Patents
Damper sealing device Download PDFInfo
- Publication number
- CN207893036U CN207893036U CN201820100072.7U CN201820100072U CN207893036U CN 207893036 U CN207893036 U CN 207893036U CN 201820100072 U CN201820100072 U CN 201820100072U CN 207893036 U CN207893036 U CN 207893036U
- Authority
- CN
- China
- Prior art keywords
- lip
- dustproof
- damper
- axis
- sealing device
- 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.)
- Active
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a kind of damper sealing device, and the sealing performance of dustproof lip is improved.Annulus between the cylinder (2) of damper and the axis (3) of damper is sealed with sealing device (4) and forms atmospheric side and sealed sides by damper, and includes：It is configured at sealed sides along axis and to inner circumferential side primary seal lip outstanding (51) and secondary sealing lip (52), it is configured at atmospheric side along axis and to the inner circumferential side main dustproof lip of ring-type (61) outstanding and secondary dustproof lip (62), it is allowed to the first pressing member of ring-type (71) slidably contacted with the peripheral surface of axis from peripheral side to inner circumferential side pressing primary seal lip (51) and secondary sealing lip (52), and it is allowed to the second pressing member of ring-type (72) slidably contacted with the peripheral surface of axis from peripheral side to the main dustproof lip (61) of inner circumferential side pressing and secondary dustproof lip (62).
Description
Technical field
The utility model is related to damper sealing devices, more particularly to the atmospheric side of damper and sealed sides progress is close
The sealing device of envelope.
Background technology
Currently, as sealing device used in the damper for constituting vehicle suspension, it is known that such a oil sealing passes through
Sealing is filled with the cylinder of working oil and is movably inserted into the gap between the piston rod of cylinder, to prevent working oil from leaking
To the outside (for example, referenced patent document 1) of cylinder.
The oil sealing has：Sealing lip, by the inside of cylinder with piston rod sliding contact to prevent working oil from leaking
To the outside of cylinder；And dustproof lip, by the outside of cylinder and piston rod sliding contact to prevent external foreign matter from invading
Enter cylinder interior.
Existing technical literature
Patent document
Patent document 1：JP Tetsukai 2017-032079 bulletins
Utility model content
The utility model project to be solved
However, in recent years along with the diversification of automobile, when vehicle is not spread in road, hill path or the gravel road etc. for having muddy water
If road on when driving, the existing sealing device described in above patent document 1 is likely to occur following situations：Muddy water,
The foreign matters such as sandstone, dust, dust invade between dustproof lip and piston rod, the foreign matter can enter sealing lip and piston rod it
Between, cause working oil to be leaked from sealing lip.
Therefore, in order to be reliably prevented between foreign matter intrusion piston rod and dustproof lip, the leakproofness for improving dustproof lip is needed
Energy.
The utility model is to propose in view of the above problems, and its purpose is to provide the sealing performances of dustproof lip to be carried
High damper sealing device.
Means for solving the problems
To achieve the goals above, the sealing device involved by the utility model is a kind of damper sealing device,
Atmospheric side is formed by being sealed with the annulus between the cylinder of damper in the car and the axis of the damper
It can be moved back and forth along axis in the inside of the cylinder with the axis of sealed sides, the damper, damper sealing device packet
It includes：Cricoid primary seal lip is configured at the sealed sides along the axis, and prominent to the direction vertical with the axis；
Cricoid secondary sealing lip, configuration than the primary seal lip closer to the position of the atmospheric side, and to the vertical side
To prominent；Cricoid main dustproof lip is configured at the atmospheric side along the axis, and prominent to the vertical direction；Ring
The secondary dustproof lip of shape, configuration than the main dustproof lip closer to the sealed sides and than the secondary sealing lip closer to described
The position of atmospheric side, and it is prominent to the vertical direction；Cricoid first pressing member is pressed from peripheral side to inner circumferential side
The primary seal lip and secondary sealing lip make the front end of the primary seal lip and the front end of the secondary sealing lip and the peripheral surface of the axis can
Slidably contact；And cricoid second pressing member, the main dustproof lip is pressed to inner circumferential side and pair is dust-proof from peripheral side
Lip makes the front end of the main dustproof lip and the front end of secondary dustproof lip and the peripheral surface of the axis slidably contact with.
In sealing device involved by one of embodiment of the utility model, the internal diameter of the pair dustproof lip is more than institute
State the internal diameter of main dustproof lip.
In sealing device involved by one of embodiment of the utility model, the internal diameter of the secondary sealing lip is more than institute
State the internal diameter of primary seal lip.
In sealing device involved by one of embodiment of the utility model, the lip front end of the main dustproof lip and institute
The lip front end for stating secondary dustproof lip is respectively facing the atmospheric side inclination extension.
(utility model effect)
Damper sealing device involved by the utility model, can improve the sealing performance of dustproof lip.
Description of the drawings
Fig. 1 is the schematic composition for the damper for showing to use the sealing device involved by the embodiment of the utility model
Partial cross-sectional view.
Fig. 2 is the close-up sectional view of the installation condition for the sealing device for being shown mounted to damper shown in FIG. 1.
Fig. 3 is the sectional view for the composition for showing sealing device shown in FIG. 1.
Specific implementation mode
Hereinafter, the embodiment of the utility model is described in detail in refer to the attached drawing.
[composition of damper]
First, with reference to figure 1 to use the damper involved by the embodiment of the utility model with sealing device (hereinafter,
Referred to as " sealing device ".) the composition of damper illustrate.Fig. 1 is the embodiment institute shown using the utility model
The partial cross-sectional view of the damper 1 for the sealing device 4 being related to schematically constituted.
Hereinafter, for convenience of description, the directions arrow a on the directions axis x are set as outside (atmospheric side), by the axis side x
The upward directions arrow b are set as inside (sealed sides).More specifically, outside refers to non-tight object side, that is, is not present close
The atmospheric side of object is sealed, inside refers to sealed object object side, that is, there are the sealed sides of the sealed objects object such as working oil.In addition,
In the direction vertical with axis x (hereinafter also referred to as radial direction.) on, the direction (directions arrow c of Fig. 1) far from axis x is periphery
Side is inner circumferential side close to the direction (directions arrow d of Fig. 1) of axis x.Sealing dress involved by the embodiment of the utility model
It sets 4 to use in vehicle or universal machine etc., is suitable for the damper for absorbing the vibration generated by external force.
Using the sealing device 4 damper 1 as shown in Figure 1, the top by being set to dust cover 10 upper lift ring 11a
And it is set to the lower lift ring 11b of the lower section of cylinder 2 and is installed on vehicle.
Damper 1 includes：Cylinder 2, in the inside of cylinder 2 along the reciprocating piston rods of axis x (axis) 3, Yi Ji
The sealing device 4 of annulus SP interior sealings cylinder 2 and the gap of piston rod 3 between cylinder 2 and piston rod 3.
In addition, damper 1 includes：Keep sealing device 4 becket 5, be set to cylinder 2 upper end guide holder
6, it is configured at the guide holder sleeve 7 of the inner circumferential side (directions arrow d) of the guide holder 6, is set to inside (the arrow side b of piston rod 3
To) one end piston 9 and be set to piston rod 3 outside (directions arrow a) the other end dust cover 10.Hereinafter, into
Row illustrates.
The outer barrel 2b that cylinder 2 has inner cylinder 2a and is arranged in a manner of covering inner cylinder 2a.In the inside as inner cylinder 2a
Annulus upper chamber 2e and lower room 2f in filled with working oil L as sealed object object.In addition, in inner cylinder 2a and outside
In the cricoid fluid reservoir 2c formed between cylinder 2b, it is filled with working oil L and gas S.In the lower end of inner cylinder 2a, the company of being formed with
Circulation passage 2d, communicating passage 2d can be such that working oil L is connected between fluid reservoir 2c and lower room 2f.
Piston rod 3 is formed by the rod member extended along axis x, and one end of inside (directions arrow b) includes and inner cylinder
The piston 9 of the inner peripheral surface sliding contact of 2a, piston rod 3 is in the directions inner peripheral surface upper edge axis x (outside (the arrow side a of inner cylinder 2a
To) and inside (directions arrow b)) move back and forth.
Sealing device 4 is made of the elastomers such as synthetic rubber, such as NBR or HNBR, and is formed as circular or substantially round
It is cyclic annular.The sealing device 4 is maintained at the upper end of cylinder 2 by becket 5, is slideably connect with the peripheral surface 3a of piston rod 3
It touches.The structure of the sealing device 4 is as described later.
Becket 5 is fixed on the upper end of outer barrel 2b.Becket 5 is for example being pressed into sealing device 4 to outer barrel 2b
The state of specified position is fixed in and extends to the outside (directions arrow a) of outer barrel 2b and upper end is towards inner circumferential side (arrow d
Direction) carry out bending machining flange 2g.
Guide holder 6 is set to the lower section of sealing device 4 and becket 5, with communicating passage 6h.The communicating passage
Between 6h is used between the peripheral surface 3a for reciprocating through the piston rod 3 and aftermentioned guide holder sleeve 7 by adjoint piston rod 3
Gap and working oil L from the upper chamber 2e of inner cylinder 2a to annulus SP that flowed out from are back in fluid reservoir 2c.
Guide holder sleeve 7 is the annular component for the inner circumferential side (directions arrow d) for being configured at guide holder 6.Guide holder sleeve 7 is logical
It crosses with the peripheral surface 3a of piston rod 3 slideably and the state for being nearly at contact is arranged, to inhibit piston rod 3 radially (outer
Side (directions arrow c) and inner circumferential side (directions arrow d)) it is mobile, and it is only allowed to be moved back and forth along the directions axis x.
Piston 9 is set to one end of the inside (directions arrow b) of piston rod 3, with the reciprocating motion of piston rod 3,
The directions inner peripheral surface upper edge axis x of inner cylinder 2a are slided, and will be filled with being separated into upper chamber 2e under inside the inner cylinder 2a of working oil
Room 2f.Piston 9 is formed with the piston valve portion (not shown) that working oil L can be moved between upper chamber 2e and lower room 2f.
Dust cover 10 is formed by the component of the disc-shape with the diameter same or about with cylinder 2, is passed through
Sealing device 4 and becket 5 are covered from outside (directions arrow a) to prevent foreign matter etc. from being invaded to the inside of cylinder 2.
In damper 1, when (directions arrow a) is mobile outward for piston rod 3, also (the arrow a outward therewith of piston 9
Direction) it is mobile, while the volume reducing of upper chamber 2e, the volume of lower room 2f increases.At this point, since the pressure in upper chamber 2e increases
Add, the pressure in lower room 2f is reduced, and therefore, the working oil L in upper chamber 2e flows into lower room 2f by the piston valve portion of piston 9.
In addition, at the same time, the working oil L in fluid reservoir 2c flows into lower room 2f by the communicating passage 2d of cylinder 2.This
When, the fluid resistance generated in the piston valve portion for flowing through piston 9 by working oil L declines to the reciprocating motion generation of piston rod 3
Subtract power.
On the other hand, when (directions arrow b) is mobile inwardly for piston rod 3, also (the arrow side b inwardly therewith of piston 9
To) mobile, while the volume of upper chamber 2e increases, the volume reducing of lower room 2f.At this point, since the pressure in upper chamber 2e subtracts
Few, the pressure in lower room 2f increases, and therefore, the working oil L in upper chamber 2e flows into upper chamber 2e by the piston valve portion of piston 9.
In addition, at the same time, the working oil L in lower room 2f flows into fluid reservoir 2c by the communicating passage 2d of inner cylinder 2a.This
When, the fluid resistance generated in the piston valve portion for flowing through piston 9 by working oil L declines to the reciprocating motion generation of piston rod 3
Subtract power.
[composition of sealing device]
Next, with reference to figure 2, the composition of the sealing device 4 of damper 1 is illustrated.Fig. 2 is to be shown mounted to damping
The close-up sectional view of the installation condition of sealing device 4 on device 1.Fig. 3 is the sectional view for the composition for showing sealing device 4.
As shown in FIG. 2 and 3, sealing device 4 has：Radially (directions arrow c and arrow d centered on axis x
Direction) extension cricoid base portion 40, from the base portion 40 along axis x inwardly (directions arrow b) extend cricoid sealing lip
Portion 50 and from the base portion 40 along the directions axis x outward (directions arrow a) extend cricoid dirt lip 60.
As shown in figure 3, base portion 40 has：Cricoid protruding portion 41 abuts with the lower surface 5b of becket 5 and covers this
The peripheral end face 5c of becket 5, and from the end in the peripheral side of lower surface 5b (directions arrow c) towards inside (directions arrow b)
It is prominent；Cricoid straight line portion 42, from the end of the inner circumferential side (directions arrow d) of protruding portion 41 along the lower surface 5b of becket 5
Extend to inner circumferential side (directions arrow d)；Cricoid extension 43, the end from the inner circumferential side (directions arrow d) of straight line portion 42
(directions arrow b) extends inwardly；And cricoid extension 44, the end from the peripheral side (directions arrow c) of lower surface 5b
(directions arrow a) extends outward in portion, and forms the annulus for storing becket 5.These protruding portion 41, straight line portions
42, extension 43 and extension 44 and base portion 40 are integrally formed.
As shown in Fig. 2, when sealing device 4 is pressed into outer barrel 2b, protruding portion 41 is crimped with guide holder 6 and outer barrel 2b,
And the front end of extension 43 is abutted with guide holder 6, and becket 5 is held in the state of flexible deformation.
In addition, base portion 40 has：From peripheral side (directions arrow c) to inner circumferential side (directions arrow d) presses sealed lip 50,
Apply the first pressing member 71 of pressing force with the peripheral surface 3a to piston rod 3 and from peripheral side (directions arrow c) to inner circumferential
Side (directions arrow d) presses dirt lip 60 to apply the second pressing member 72 of pressing force to the peripheral surface 3a of piston rod 3.With
Under, it is specifically described.
In sealing device 4, centered on base portion 40, it is configured with sealed lip 50 in the lower surface sides 5b of becket 5,
The upper surface sides 5a of becket 5 are configured with dirt lip 60.
As shown in figure 3, sealed lip 50 has the cricoid lip arm extended from base portion 40 towards inside (directions arrow b)
Divide 53, there is lip arm section 53 cricoid primary seal lip 51 and cricoid secondary sealing lip 52, the primary seal lip 51 to be configured at lip
The most inner side (directions arrow b) of arm section 53, and it is prominent to inner circumferential side (directions arrow d), and which configures than this
Primary seal lip 51 closer to outside (directions arrow a) position, and it is prominent to inner circumferential side (directions arrow d).
Primary seal lip 51 is formed in the inner circumferential side (directions arrow d) of lip arm section 53, and in the inside of lip arm section 53
The end in (directions arrow b) has the lip front end 51a being substantially in the shape of the letter V to inner circumferential side (directions arrow d) prominent, section, and
It is slidably contacted with the peripheral surface 3a of piston rod 3.Specifically, the lip front end 51a of primary seal lip 51 is by with the lip front end
Centered on portion 51a on the outside (directions arrow a) formed inclined surface 51b and from lip front end 51a in inside (directions arrow b)
The inclined surface 51c of formation and define.
Secondary sealing lip 52 is formed in the inner circumferential side (directions arrow d) of lip arm section 53, and configures than primary seal lip 51
Closer to the position in outside (directions arrow a), before there is the lip being substantially in the shape of the letter V to inner circumferential side (directions arrow d) prominent, section
End 52a, and slidably contacted with the peripheral surface 3a of piston rod 3.Specifically, the lip front end 52a tools of secondary sealing lip 52
There is centered on the 52a of the lip front end (directions arrow a) is formed on the outside inclined surface 52b and from including the 52a of lip front end
The inclined surface 52c that side (directions arrow b) is formed.
Here, in sealed lip 50, the internal diameter D1 of the lip front end 51a of primary seal lip 51 is formed as than secondary sealing lip 52
Lip front end 52a internal diameter D2 it is small.That is, the lip front end 52a relative to secondary sealing lip 52, the lip front end of primary seal lip 51
51a is pressed against the peripheral surface 3a of piston rod 3 with stronger power.
In addition, in sealed lip 50, the peripheral side (directions arrow c) of lip arm section 53 and with the lip of primary seal lip 51
Front end 51a forms back-to-back part backwards, is formed with storage and keeps the housing recess 53h of the first pressing member 71.
Dirt lip 60 has the annular lip arm section 63 extended from base portion 40 towards outside (directions arrow a), in lip arm
In part 63, there is cricoid main dustproof lip 61 and cricoid secondary dustproof lip 62, the main dustproof lip 61 to be configured at outermost (arrow
Head a directions), and it is prominent to inner circumferential side (directions arrow d), the pair dustproof lip 62 configure than the main dustproof lip 61 closer to inside
It (directions arrow b) and dashes forward closer to the position in outside (directions arrow a), and to inner circumferential side (directions arrow d) than secondary sealing lip 52
Go out.
Main dustproof lip 61 is formed in the inner circumferential side (directions arrow d) of lip arm section 63, and in the outside of lip arm section 63
The end in (directions arrow a) has the lip front end 61a being substantially in the shape of the letter V to inner circumferential side (directions arrow d) prominent, section, and
It is slidably contacted with (with reference to figure 2) with the peripheral surface 3a of piston rod 3.Specifically, the lip front end 61a of main dustproof lip 61 by with
Centered on the 61a of the lip front end on the outside (directions arrow a) formed inclined surface 61b and centered on the 61a of lip front end including
Side (directions arrow b) formed inclined surface 61c and define.
Secondary dustproof lip 62 is formed in the inner circumferential side (directions arrow d) of lip arm section 63, and configures more than main dustproof lip 61
Position close to inside (directions arrow b) has the lip front end being substantially in the shape of the letter V to inner circumferential side (directions arrow d) prominent, section
Portion 62a, and slidably contacted with the peripheral surface 3a of piston rod 3.Specifically, the lip front end 62a of secondary dustproof lip 62 has
Centered on the 62a of the lip front end on the outside (directions arrow a) formed inclined surface 62b and from lip front end 62a in inside
The inclined surface 62c that (directions arrow b) is formed.
In addition, the lip front end 61a of main dustproof lip 61 and the lip front end 62a of secondary dustproof lip 62 are respectively facing inner circumferential side
(directions arrow d) and outward (directions arrow a), which tilt, to be extended.This, which is main dustproof lip 61 and secondary dustproof lip 62, effectively to prevent
Only the foreign matters such as muddy water, sandstone, dust, dust are from the reason of the external intrusion in outside (directions arrow a).
Here, in dirt lip 60, the internal diameter D3 of the lip front end 61a of main dustproof lip 61 is formed as than secondary dustproof lip 62
Lip front end 62a internal diameter D4 it is small.That is, the lip front end 62a relative to secondary dustproof lip 62, the lip front end of main dustproof lip 61
61a is pressed against the peripheral surface 3a of piston rod 3 with stronger power.
In addition, same in dirt lip 60, the peripheral side (directions arrow c) of lip arm section 63 and with dustproof lip 61
The approximately mid way between of lip front end 61a and the lip front end 62a of secondary dustproof lip 62 form back-to-back part backwards, are formed with
Store and keep the housing recess 63h of the second pressing member 72.
First pressing member 71 is the cyclic annular garter spring being made of metallic resilient material, as shown in Fig. 2, from peripheral side
(directions arrow c) presses primary seal lip 51 and secondary sealing lip 52 to inner circumferential side (directions arrow d), before the lip for making primary seal lip 51
The lip front end 52a of end 51a and secondary sealing lip 52 and the peripheral surface 3a of piston rod 3 are slidably contacted with.
Specifically, when the first pressing member 71 is stored and is held in the housing recess 53h of lip arm section 53, to inner circumferential
Side (directions arrow d) pushes the lip front end 51a of the primary seal lip 51 and lip front end 52a of secondary sealing lip 52, thus to bar 3
Peripheral surface 3a apply the pressing force of prescribed level.
Same as the first pressing member 71, the second pressing member 72 is the cyclic annular clamping bullet being made of metallic resilient material
Spring, as shown in Fig. 2, from peripheral side (directions arrow c) to inner circumferential side (directions arrow d) presses main dustproof lip 61 and secondary dustproof lip
62, make the lip front end 61a and the lip front end 62a of secondary dustproof lip 62 of main dustproof lip 61 and the peripheral surface 3a of piston rod 3 can
Slidably contact.
Specifically, when the second pressing member 72 is stored and is held in the housing recess 63h of lip arm section 63, to inner circumferential
Side (directions arrow d) pushes the lip front end 61a of the main dustproof lip 61 and lip front end 62a of secondary dustproof lip 62, thus to work
The peripheral surface 3a of stopper rod 3 applies the pressing force of prescribed level.
In this way, in sealing device 4, the sealed lip 50 configured close to inside (directions arrow b) along axis x has master close
Lip 51 and secondary sealing lip 52 are sealed, the dirt lip 60 configured close to outside (directions arrow a) along the directions axis x has master dust-proof
Lip 61 and secondary dustproof lip 62, the sealing device 4 include the first pressing member 71 of pressing sealed lip 50 and press dust-proof
Second pressing member 72 of lip 60.
That is, there are sealed lip 50 52 two sealing lips of primary seal lip 51 and secondary sealing lip, dirt lip 60 to have main anti-
62 two dustproof lips of dirt lip 61 and secondary dustproof lip, therefore, it is possible to inhibit working oil L to reach the peripheral surface 3a of piston rod 3 and then let out
The outside of cylinder 2 is drained to, and the inside of external foreign matter intrusion cylinder 2 can be prevented, can further improve sealing performance.
In addition, in sealing device 4, due to the lip front end 61a of main dustproof lip 61 and the lip front end of secondary dustproof lip 62
Portion 62a is tilted towards outside (directions arrow a) to be extended, therefore, as the peripheral surface 3a of lip front end 61a and 62a and piston rod 3
When contact, contact area becomes larger, and foreign may make to be difficult to invade the inside of cylinder 2.
At this point, since sealed lip 50 and dirt lip 60 are by the first pressing member 71 and the second pressing member 72 two
Pressing component presses, therefore, it is possible to make lip front end 51a, 52a of sealed lip 50 and the lip front end of dirt lip 60
61a, 62a are closely bonded with the peripheral surface 3a of piston rod 3.
In addition, in sealed lip 50, the internal diameter D2 of the lip front end 52a of secondary sealing lip 52 is formed as than primary seal lip 51
Lip front end 51a internal diameter D1 big (D2 ＞ D1).
Therefore, the lip front end 51a of primary seal lip 51 with pressing force more higher than the lip front end 52a of secondary sealing lip 52 with
The peripheral surface 3a contact of piston rod 3, and the lip front end 52a of secondary sealing lip 52 with the lip front end 51a than primary seal lip 51 more
Weak pressing force is contacted with the peripheral surface 3a of piston rod 3.Therefore, it is possible to improve sealed lip 50 sealing performance while,
Excessive resistance to sliding is generated when piston rod 3 being inhibited to move back and forth.
In addition, same in dirt lip 60, the internal diameter D4 of the lip front end 62a of secondary dustproof lip 62 is formed as more dust-proof than master
The internal diameter D3 of the lip front end 61a of lip 61 is big (D4 ＞ D3).
Therefore, the lip front end 61a of main dustproof lip 61 with pressing force more higher than the lip front end 62a of secondary dustproof lip 62 with
The peripheral surface 3a contact of piston rod 3, and the lip front end 62a of secondary dustproof lip 62 with the lip front end 61a than main dustproof lip 61 more
Weak pressing force is contacted with the peripheral surface 3a of piston rod 3.Therefore, it is possible to improve the resistance to muddy water of dirt lip 60 and dust-proof
Property while, inhibit piston rod 3 move back and forth when generate excessive resistance to sliding.
[other embodiment]
It should be noted that in the above-described embodiment, the lip front end 61a to main dustproof lip 61 and secondary dustproof lip 62
Lip front end 62a be respectively facing outside (directions arrow a) tilt extend the case where be illustrated.However can suitably it change
Become the shape of main dustproof lip 61 and secondary dustproof lip 62.For example, the lip front end 61a of main dustproof lip 61 and secondary dustproof lip 62
Lip front end 62b can not outward (direction of arrow a) tilt extend, and with the lip front end 51a of primary seal lip 51 and
The lip front end 52a of secondary sealing lip 52 is same, is to inner circumferential side (directions arrow d) shape outstanding.
In addition, in the above-described embodiment, being formed as comparing primary seal to the internal diameter D2 of the lip front end 52a of secondary sealing lip 52
The situation that the internal diameter D1 of the lip front end 51a of lip 51 is big is illustrated.However, the lip front end 51a's of primary seal lip 51 is interior
The size of the diameter D1 and internal diameter D2 of the lip front end 52a of secondary sealing lip 52 can be same or about.
In addition, in the above-described embodiment, to the internal diameter D4 shapes of the lip front end 62a of secondary dustproof lip 62 in dirt lip 60
It is illustrated as the situation bigger than the internal diameter D3 of the lip front end 61a of main dustproof lip 61.However, before the lip of main dustproof lip 61
The size of the internal diameter D3 of the end 61a and internal diameter D4 of the lip front end 62a of secondary dustproof lip 62 can be same or about.
More than, preferred embodiments of the present invention are illustrated, still, the utility model is not limited to above-mentioned
Damper sealing device 4 involved by embodiment, but include the design and the protection model of utility model of the utility model
Enclose interior covered all modes.In addition, in order to complete at least part in the above problem and effect, can also suitably select
Combine each composition to property.For example, in the above-described embodiments, shape, material, configuration, size of each integral part etc. can pass through
The specifically used mode of the utility model suitably changes.
(label declaration)
1 ... damper, 2 ... cylinders, 2a ... inner cylinders, 2b ... outer barrels, 2c ... fluid reservoirs, 2d ... connections are logical
Road, 2e ... upper chambers, the lower rooms 2f ..., 2g ... flanges, 3 ... piston rods, 3a ... peripheral surfaces, 4 ... dampers are with close
Seal apparatus, 5 ... beckets, the upper surfaces 5a ..., the lower surfaces 5b ..., 5c ... peripheral end faces, 6 ... guide holders,
6h ... communicating passages, 7 ... guide holder sleeves, 9 ... pistons, 10 ... dust covers, 11a ... upper lift rings, under 11b ...
Hanging ring, 40 ... base portions, 41 ... protruding portions, 42 ... straight line portions, 43 ... extensions, 44 ... extensions, 50 ... is close
Lip is sealed, 51 ... primary seal lips, 51a ... lips front end, the inclined surface 51b ..., the inclined surface 51c ..., 52 ... is secondary close
Lip is sealed, 52a ... lips front end, the inclined surface 52b ..., the inclined surface 52c ..., 53 ... lip arm section, 53h ... stores recessed
Portion, 60 ... dirt lips, 61 ... main dustproof lips, 61a ... lips front end, the inclined surface 61b ..., the inclined surface 61c ...,
62 ... secondary dustproof lips, 62a ... lips front end, the inclined surface 62b ..., the inclined surface 62c ..., 63 ... lip arm section,
63h ... housing recess, 71 ... first pressing members, 72 ... second pressing members, the outsides a ..., the insides b ...,
The peripheral sides c ..., the inner circumferential sides d ..., D1, D2, D3, D4 ... internal diameter, L ... working oils, S ... gases, SP ... are cyclic annular
Space, x ... axis.
Claims (5)
- It, will be with the ring between the cylinder of damper in the car and the axis of the damper 1. a kind of damper sealing device Shape space is sealed and forms atmospheric side and sealed sides, and the axis of the damper can be reciprocal along axis in the inside of the cylinder Movement,The damper includes with sealing device：Cricoid primary seal lip is configured at the sealed sides along the axis, and prominent to the direction vertical with the axis；Cricoid secondary sealing lip, configuration than the primary seal lip closer to the position of the atmospheric side, and to described vertical Direction protrude；Cricoid main dustproof lip is configured at the atmospheric side along the axis, and prominent to the vertical direction；Cricoid pair dustproof lip, configuration are more leaned on than the main dustproof lip closer to the sealed sides and than the secondary sealing lip The position of the nearly atmospheric side, and it is prominent to the vertical direction；Cricoid first pressing member presses the primary seal lip and secondary sealing lip from peripheral side to inner circumferential side, makes the master The front end of sealing lip and the front end of the secondary sealing lip and the peripheral surface of the axis slidably contact with；AndCricoid second pressing member presses the main dustproof lip and secondary dustproof lip from peripheral side to inner circumferential side, makes the master The front end and the peripheral surface of the axis of the front end of dustproof lip and secondary dustproof lip slidably contact with.
- 2. damper sealing device according to claim 1, whereinThe internal diameter of the pair dustproof lip is more than the internal diameter of the main dustproof lip.
- 3. damper sealing device according to claim 1 or 2, whereinThe internal diameter of the secondary sealing lip is more than the internal diameter of the primary seal lip.
- 4. damper sealing device according to claim 1 or 2, whereinThe lip front end of the main dustproof lip and the lip front end of the secondary dustproof lip are respectively facing the atmospheric side and tilt and extend.
- 5. damper sealing device according to claim 3, whereinThe lip front end of the main dustproof lip and the lip front end of the secondary dustproof lip are respectively facing the atmospheric side and tilt and extend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820100072.7U CN207893036U (en) | 2018-01-19 | 2018-01-19 | Damper sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820100072.7U CN207893036U (en) | 2018-01-19 | 2018-01-19 | Damper sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207893036U true CN207893036U (en) | 2018-09-21 |
Family
ID=63544771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820100072.7U Active CN207893036U (en) | 2018-01-19 | 2018-01-19 | Damper sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207893036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973583A (en) * | 2019-04-04 | 2019-07-05 | 太原科技大学 | A kind of gas and oil bitubular combined type damper |
-
2018
- 2018-01-19 CN CN201820100072.7U patent/CN207893036U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973583A (en) * | 2019-04-04 | 2019-07-05 | 太原科技大学 | A kind of gas and oil bitubular combined type damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0330449B1 (en) | Shock absorber | |
| US20060185952A1 (en) | Seal structure and shock absorber | |
| US11760147B2 (en) | Shock absorber | |
| US6622832B2 (en) | Hydraulic shock absorber | |
| KR101983482B1 (en) | Shock absorber | |
| EP3078885A1 (en) | Tool device | |
| US11629772B2 (en) | Valve and shock absorber | |
| CN207893036U (en) | Damper sealing device | |
| JP6355067B2 (en) | Sealing device | |
| US11536346B2 (en) | Shock absorber | |
| CN104595409A (en) | Automotive shock absorber dustproof structure and automotive shock absorber with the same | |
| CN106838096B (en) | Hydro-pneumatic spring self-lubricating compensates floating piston | |
| JP2007278459A (en) | Oil seal | |
| CN106763415A (en) | Hydro-pneumatic spring floating piston | |
| KR20130139110A (en) | Rod cover for hydraulic cylinder | |
| JP2007057058A (en) | Friction adding mechanism for shock absorber | |
| CN116438389A (en) | Sealing device and buffer of hydraulic press | |
| JP3192593U (en) | Sealing device | |
| CN207246314U (en) | A kind of shock absorber sealing device of the guide holder containing wedge insert | |
| CN213512082U (en) | Sealing device | |
| JP2018112232A (en) | Sealing device for hydraulic sock absorber | |
| US20230392665A1 (en) | Sealing device | |
| CN215171767U (en) | Air spring for vehicle | |
| CN111757996B (en) | Reciprocating fluid pressure device | |
| KR102107479B1 (en) | Free piston of mono tube type shock absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |