CN107738546A - Be rotatably connected ring - Google Patents

Be rotatably connected ring Download PDF

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Publication number
CN107738546A
CN107738546A CN201711026171.1A CN201711026171A CN107738546A CN 107738546 A CN107738546 A CN 107738546A CN 201711026171 A CN201711026171 A CN 201711026171A CN 107738546 A CN107738546 A CN 107738546A
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CN
China
Prior art keywords
ring
sealing
installing component
annular
sealing lip
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.)
Pending
Application number
CN201711026171.1A
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Chinese (zh)
Inventor
李炼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201711026171.1A priority Critical patent/CN107738546A/en
Publication of CN107738546A publication Critical patent/CN107738546A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving

Abstract

The invention discloses one kind rotatable connection ring, including the installing component with annular wall and annular groove, sealing ring is pressed with the annular wall of installing component, sealing ring includes the high pressure sealing lip stretched into installing component annular groove and rides over two environment sealing lips in installing component annular wall, the first joint and the second joint are respectively equipped with installing component and sealing ring, the passage of the first joint and the second joint is communicated with high pressure sealing lip and installing component, the air chamber of annular is equipped between the annular wall of each the environment sealing lip and installing component of sealing ring, the capillary of the corresponding air chamber of inner orifice connection is fitted with each environment sealing lip, each environment sealing lip is compressed by the annular wall of turn and installing component.So as to provide it is a kind of under oil-free or few oil lubrication environment, in high linear speed rotation, good, wear-resistant, service life length the rotatable connection ring of air-tightness, have the characteristics that to be skillfully constructed, be simple in construction, produce it is easy.

Description

Be rotatably connected ring
Technical field
The present invention relates to one kind rotatable connection ring, the gas circuit for being mainly used in tire automatic inflatable/air connects.
Background technology
At present, during traveling, if vehicle tire air pressure is insufficient, it will cause the heel and toe wear of tire and reduce The economy of fuel oil;If tire pressure is excessive, it can also accelerate the inordinate wear of tire.During traveling, vehicle The pressure stability of tire, tire automatic inflatable/air system is installed on some vehicles, for being supervised in real time in vehicle travel process Measuring wheel tire pressure, and automatic inflating or deflate tire pressure is adjusted, this just need design gas circuit come connect source of the gas and Tire during traveling.
Existing automobile tire automatic inflatable/air gas circuit is using structures such as axle center gas circuit, cage inner air paths.Except door Outside the automobile of formula bridge structure, these gas circuits are required to former car mate design to realize;Related fault rate height be present, safeguard inspection The deficiencies such as difficulty is big, versatility is low are repaiied, are not easy to independent design and the manufacture of tire automatic inflatable/air system.
Therefore, applicant expects that avris gas circuit as shown in Figure 1 can be used, come avoid tire automatic inflatable/air gas circuit with The matching problem of former car accessory.Avris gas circuit be mainly will connect the fixation appendix 1 of source of the gas along hub central axle avris or Ring flange avris is arranged, by the rotation appendix 2 for connecting tire along wheel hub radial arrangement, is fixed by a connection of connection ring 3 Appendix 1 and rotation appendix 2.So in vehicle traveling process, connect in connection ring 3 with what rotation appendix 2 was connected Head must rotate with tire, but the joint being connected in connection ring 3 with fixed appendix 1 has to fixed gas transmission again Pipe 1 does not rotate, and this just needs connection ring 3 to possess good abrasion resistance properties and air-tightness, and does not have in the prior art The structure of connection ring 3 can meet this demand.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of air-tightness good, wear-resistant, service life length rotation Connection ring, for connecting the fixation appendix and rotation appendix of tire automatic inflatable/air system avris gas circuit.Certainly, if its There is similar connection requirement in his field, can also popularization and application.
Technical scheme is as follows:One kind rotatable connection ring, including the installing component with cylindrical annular wall, Annular groove is provided with the annular wall of the installing component, the sealing ring of annular, the sealing are also pressed with the annular wall Ring includes the high pressure sealing lip stretched into installing component annular groove and rides over two environment sealing lips in installing component annular wall; Spacing is left between the interior bottom of the high pressure sealing lip and the interior bottom of installing component annular groove and forms the first air flue, in the peace Dress part is provided with the first joint, and the inner orifice of first joint penetrates the first air flue;At two of the high pressure sealing lip Sealing gasket is lined between side wall and two madial walls of installing component annular groove;Annular is provided with the high pressure sealing lip Second air flue, at least one throttle orifice is provided with the interior bottom of the high pressure sealing lip, and the both ends of the throttle orifice are respectively communicated with One air flue and the second air flue;At least one second joint is provided with the sealing ring, the inner of each second joint is Connected with the second air flue;Annular is equipped between the annular wall of each the environment sealing lip and installing component of the sealing ring Air chamber, is fitted with an at least capillary on each environment sealing lip, the inner orifice of each capillary with Corresponding air chamber connection, each environment sealing lip are compressed by the annular wall of turn and installing component.
Using said structure, by being pressed sealing ring on installing component, sealing ring is designed to possess high pressure sealing lip With the structure of two environment sealing lips, when being used in vehicle tyre automatic inflatable/air system, by the first joint and appendix is rotated Connection, the second joint is connected with fixed appendix.
When the vehicle is still, environment sealing lip by the annular wall of turn and installing component compress, to environment carry out every Absolutely, avoid the water, mud, dust in the external world etc. from entering in rotatable connection ring, be effectively prevented from introduced contaminants and enter aggravation sealing ring Abrasion.
After vehicle launch, installing component, the first joint are with tyre rotation, and sealing ring and the second joint do not occur then to turn It is dynamic, friction between sealing ring and installing component be present.Only need to inject clean gas, the air pressure of air chamber to air chamber by capillary Increase, so as to apply the power opposite with turn to environment sealing lip, reduce between environment sealing lip and installing component annular wall Pressure, so as to mitigate the abrasion of environment sealing lip.When capillary continues to air chamber injection clean gas, until the gas in air chamber The pressure balance of body pressure and turn, when being further continued for injection, environment sealing lip departs from the contact with installing component annular wall, Stable air cushion is formed between environment sealing lip and installing component annular wall, so that environment sealing lip is not annular with installing component Wall contacts, and greatly reduces abrasion and the friction torque of environment sealing lip, is advantageous to significantly increase the use longevity of sealing ring Life.Also, after vehicle start-up, there is no axial pressure between sealing ring and installing component, tire also will not in automobilism Produce the bounce of axial direction, then in the case of not inflation/deflation, the high pressure sealing lip abrasion of sealing ring is very small.
When tire pressure deficiency needs automatic inflating in vehicle traveling, the gases at high pressure of source of the gas enter the through the second joint Two air flues, the second air flue is set to be also at high pressure conditions, under hyperbar effect, high pressure sealing lip is real to two side compression sealing gaskets Existing high pressure sealing, while gases at high pressure enter the first air flue through throttle orifice from the second air flue, then rotation is output to by the first joint Appendix, you can be inflated.Gases at high pressure when there was only tens seconds to a few minutes because the time of inflation is general, and inflating With high flow rate feature, gases at high pressure can take away heat caused by friction, so that it is guaranteed that rotatable connection ring can be supported at a high speed Inflation in the case of driving, and have longer service life.Tire is in from packing state, high pressure sealing at the end of inflation Second air flue of lip recovers normal pressure, and high pressure sealing lip also returns to running light state.
To sum up, the invention provides one kind under oil-free or few oil lubrication environment, in high linear speed rotation, air-tightness Good, wear-resistant, service life length rotatable connection ring.The rotatable connection ring can operate with vehicle tyre automatic inflatable/air system, The fixation appendix for efficiently solving side gas circuit arrangement is connected problem with rotation appendix.Certainly, it is other it is similar, exist The situation that fixing end is connected with round end, it can also use this rotatable connection ring connection.
The installing component includes mounting blocks and block in a ring, and ring-shaped step is provided with one end of the mounting blocks Face, the block are fixed on the termination of mounting blocks and positioned opposite with annular step surface, so as to block and annular step surface it Between form the annular groove of the installing component, the external annulus of the block and the external annulus of mounting blocks form the installing component Annular wall.Installing component is so used into split-type structural, is on the one hand easy to produce and process, is on the other hand easy to the peace of sealing ring Dress.
The block is fixed by screw and mounting blocks, and the anchor ring contacted in block with mounting blocks is provided with sealing and glued Glue.It is advantageously ensured that the sealing of the first air flue.
The middle part outwardly convex of the sealing ring forms bulge loop, annular groove is provided with the bulge loop, in the annular The opening of groove is installed with the first sealing ring, and second joint connects through the first sealing ring with the second air flue;The annular The inner ring of groove gos deep into forming second air flue in high pressure sealing lip, and pressure ring is fixed with the bulge loop external compression.So set Bulge loop, the first sealing ring and pressure ring are put, makes that the formation production simple in construction, sealing ring of the second air flue is easy, production cost is low.
The second sealing ring being enclosed on outside sealing ring is arranged with the both sides of the bulge loop, two second sealing rings are equal In the ring of pressure ring, the capillary is inserted in environment sealing lip through pressure ring and corresponding second sealing ring.It is so favourable In the sealing for ensuring capillary inserting, the gas between environment sealing lip and installing component annular wall in air chamber is avoided to lead to from other Road reveal, it is ensured that vehicle traveling between environment sealing lip and installing component annular wall air cushion stabilization.
The sealing ring and sealing gasket are using the polytetrafluoroethylene (PTFE) material filled with carbon fiber.It is excellent using polytetrafluoroethylene (PTFE) Self lubricity more, significantly increase the service life of sealing ring.
Preferably, interior bottom of the throttle orifice along high pressure sealing lip be circumferentially evenly equipped with it is multiple.
Preferably, second joint is disposed with one on sealing ring.
Beneficial effect:Sealing ring is designed to possess high pressure sealing by the present invention by being pressed sealing ring on installing component The structure of lip and two environment sealing lips, revolved so as to provide one kind under oil-free or few oil lubrication environment, in high linear speed In turning, good, wear-resistant, service life length the rotatable connection ring of air-tightness, there is be skillfully constructed, be simple in construction, production is easy etc. Feature.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art.In all of the figs, similar element Or part is typically identified by similar reference.In accompanying drawing, each element or part might not be drawn according to the ratio of reality.
Fig. 1 is the use state figure of the present invention.
Fig. 2 is the structural representation of the present invention.
Reference:Installing component 1, annular groove 1a, mounting blocks 1b, block 1c, screw 2, sealing ring 3, high pressure sealing lip 311st, the second air flue 311a, throttle orifice 311b, annular joint-cutting 311c, slot to make way 311d, environment sealing lip 312, bulge loop 313, One joint 4, sealing gasket 5, the second joint 6, the first sealing ring 7, pressure ring 8, air chamber 9, capillary 10, the second sealing ring 11, spring Circle 12, fixed appendix 13, rotation appendix 14, connection ring 15.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention can not be limited with this Enclose.Also, although describing the research and development original intention of the present invention in background technology, but the protection model of the present invention can not be limited with this Enclose, rotatable connection ring of the present invention is not limited to automobile tire air-charging and air-discharging system, and connection as other domain classes is using this The described rotatable connection ring of invention, still falls within protection scope of the present invention.
In the description of the present application, it is to be understood that term " first ", " second " etc. are only used for describing purpose, without It is understood that to indicate or implying relative importance or the implicit quantity for indicating indicated technical characteristic.In description of the invention In, " multiple " are meant that two or more, unless otherwise specifically defined.
In this application, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally;Can be that machinery connects Connect or electrically connect;Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings Condition understands the concrete meaning of above-mentioned term in the present invention.
As shown in Fig. 2 the present invention includes the installing component 1 with cylindrical annular wall, in the annular of the installing component 1 Annular groove 1a is provided with wall.The preferably described installing component 1 of the present embodiment includes mounting blocks 1b and block 1c in a ring, in institute One end outer ring for stating mounting blocks 1b is provided with annular step surface, and the block 1c is fixed on mounting blocks 1b termination and and ring-shaped step Face is positioned opposite.So as to form the annular groove 1a, the block 1c of the installing component 1 between block 1c and annular step surface External annulus and mounting blocks 1b external annulus form the annular wall of the installing component 1.In the present embodiment, the block 1c passes through Screw 2 is fixed with mounting blocks 1b, and the anchor ring contacted in block 1c with mounting blocks 1b is provided with sealing viscose glue.In the installation portion The sealing ring 3 of annular is also pressed with the annular wall of part 1, the sealing ring 3 includes the height stretched into the annular groove 1a of installing component 1 Means of press seals lip 311 is located at two with two environment sealing lips 312 in the annular wall of installing component 1, the high pressure sealing lip 311 is ridden over Between individual environment sealing lip 312.
As shown in Fig. 2 left between the interior bottom of the high pressure sealing lip 311 and the annular groove 1a of installing component 1 interior bottom Spacing, so as to form the first air flue.The first joint 4 is provided with the installing component 1, the inner orifice of first joint 4 passes through Logical first air flue.In the present embodiment, first joint 4 is located on mounting blocks 1b, and the first joint 4 and mounting blocks 1b is one Body.It is lined between two side walls of the high pressure sealing lip 311 and the annular groove 1a of installing component 1 two madial walls close Packing 5.Using the polytetrafluoroethylene (PTFE) material filled with carbon fiber, this material is existing for the sealing ring 3 and sealing gasket 5 , it will not be described here.
As shown in Fig. 2 the second air flue 311a of annular is provided with the high pressure sealing lip 311, in the high pressure sealing The interior bottom of lip 311 is provided with least one throttle orifice 311b, and the both ends of the throttle orifice 311b are respectively communicated with the first air flue and second Air flue 311a.
Be provided with least one second joint 6 on the sealing ring 3, each second joint 6 it is inner with second Air flue 311a is connected.
The middle part outwardly convex of the sealing ring 3 forms bulge loop 313, annular groove is provided with the bulge loop 313, in institute The open-mouth for stating annular groove is installed with the first sealing ring 7, and the inner ring of the annular groove gos deep into high pressure sealing lip 311 being formed The second air flue 311a.Second joint 6 connects through the first sealing ring 7 with the second air flue 311a.In the bulge loop 313 External compression is fixed with pressure ring 8.
As shown in Fig. 2 it is all provided between the annular wall of each the environment sealing lip 312 and installing component 1 of the sealing ring 3 There is the air chamber 9 of annular, an at least capillary 10, each capillary are fitted with each environment sealing lip 312 The inner orifice of pipe 10 connects with corresponding air chamber 9.Be enclosed on outside sealing ring 3 is arranged with the both sides of the bulge loop 313 Two sealing rings 11, two second sealing rings 11 are respectively positioned in the ring of pressure ring 8, and the capillary 10 is through pressure ring 8 and correspondingly The second sealing ring 11 insertion environment sealing lip 312 in.Each environment sealing lip 312 passes through turn 12 and installation portion The annular wall of part 1 is compressed, and the turn 12 is enclosed on outside corresponding environment sealing lip 312, and turn 12 and installing component 1 It is coaxially arranged.
As shown in Fig. 2 interior bottoms of the preferably described throttle orifice 311b of the present embodiment along high pressure sealing lip 311 be circumferentially evenly equipped with it is more It is individual.Second joint 6 is disposed with one on sealing ring 3.In order to increase the deformation of high pressure sealing lip 311 at high pressure Amount, improve high pressure sealing 311 sealing effectiveness at high pressure of lip, the inner both sides of the high pressure sealing lip 311 be provided with pair The two annular joint-cutting 311c claimed.Two annular air flue 311a of joint-cutting 311c face high pressure sealings lip 311 second interior bottom Arrangement.In order to sufficient space is reserved in the inner of capillary 10, to promote capillary 10 to inflate to corresponding air chamber 9 smooth, simultaneously plus Deformation quantity, raising high pressure sealing 311 sealing effectiveness at high pressure of lip of big high pressure sealing lip 311 at high pressure, in institute The root for stating high pressure sealing lip 311 is provided with symmetrical annular slot to make way 311d, the slot to make way 311d faces installing component 1 Annular wall arrangement.
Although Fig. 2 show the outer ring that sealing ring 3 is located at installing component 1, if other fields need to seal Ring 3 is arranged in the inner ring of installing component 1, that is, the cylindric annular wall of installing component 1 is internal ring wall, those skilled in the art Only need to make sealing ring 3 accommodation, and turn 12 is replaced by and outwards applies stressed turn 12.
Finally it should be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that:It still may be used To be modified to the technical scheme described in previous embodiment, either which part or all technical characteristic are equal Replace, and these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technical scheme Scope, it all should cover among the claim of the present invention and the scope of specification.

Claims (8)

1. one kind rotatable connection ring, it is characterised in that:Including the installing component with cylindrical annular wall, in the installing component Annular wall on be provided with annular groove, be also pressed with the annular wall annular sealing ring, the sealing ring include stretch into peace Fill the high pressure sealing lip in part annular groove and ride over two environment sealing lips in installing component annular wall;
Spacing is left between the interior bottom of the high pressure sealing lip and the interior bottom of installing component annular groove and forms the first air flue, in institute State installing component and be provided with the first joint, the inner orifice of first joint penetrates the first air flue;In the high pressure sealing lip Sealing gasket is lined between two side walls and two madial walls of installing component annular groove;
The second air flue of annular is provided with the high pressure sealing lip, at least one section is provided with the interior bottom of the high pressure sealing lip Discharge orifice, the both ends of the throttle orifice are respectively communicated with the first air flue and the second air flue;At least one the is provided with the sealing ring Two joints, the inner of each second joint connect with the second air flue;
The air chamber of annular is equipped between the annular wall of each the environment sealing lip and installing component of the sealing ring, each An at least capillary is fitted with the environment sealing lip, the inner orifice of each capillary connects with corresponding air chamber Logical, each environment sealing lip is compressed by the annular wall of turn and installing component.
2. rotatable connection ring according to claim 1, it is characterised in that:The installing component includes installation in a ring Block and block, are provided with annular step surface in one end of the mounting blocks, the block be fixed on the termination of mounting blocks and with annular Step surface is positioned opposite, so as to form the annular groove of the installing component between block and annular step surface, the block The external annulus of external annulus and mounting blocks form the annular wall of the installing component.
3. rotatable connection ring according to claim 2, it is characterised in that:The block is fixed by screw and mounting blocks, And it is provided with sealing viscose glue in the anchor ring that block contacts with mounting blocks.
4. rotatable connection ring according to claim 1, it is characterised in that:The middle part outwardly convex of the sealing ring forms convex Ring, annular groove is provided with the bulge loop, the first sealing ring, second joint are installed with the opening of the annular groove Connected through the first sealing ring with the second air flue;The inner ring of the annular groove gos deep into forming second gas in high pressure sealing lip Road, pressure ring is fixed with the bulge loop external compression.
5. rotatable connection ring according to claim 4, it is characterised in that:Be arranged with the both sides of the bulge loop be enclosed on it is close The second sealing ring outside seal ring, two second sealing rings are respectively positioned in the ring of pressure ring, and the capillary is through pressure ring and right In the second sealing ring insertion environment sealing lip answered.
6. according to the rotatable connection ring described in claim 1 or 2 or 3 or 4 or 5, it is characterised in that:The sealing ring and sealing gasket Using the polytetrafluoroethylene (PTFE) material filled with carbon fiber.
7. rotatable connection ring according to claim 6, it is characterised in that:Interior bottom week of the throttle orifice along high pressure sealing lip It is multiple to being evenly equipped with.
8. rotatable connection ring according to claim 7, it is characterised in that:Second joint is disposed with one on sealing ring It is individual.
CN201711026171.1A 2017-10-27 2017-10-27 Be rotatably connected ring Pending CN107738546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711026171.1A CN107738546A (en) 2017-10-27 2017-10-27 Be rotatably connected ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711026171.1A CN107738546A (en) 2017-10-27 2017-10-27 Be rotatably connected ring

Publications (1)

Publication Number Publication Date
CN107738546A true CN107738546A (en) 2018-02-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711026171.1A Pending CN107738546A (en) 2017-10-27 2017-10-27 Be rotatably connected ring

Country Status (1)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147494A (en) * 1989-07-28 1992-09-15 Keeper Co., Ltd. Seal device for tire pressure-adjusting device
CN101362423A (en) * 2007-10-04 2009-02-11 刘艳昭 Inflated and deflated apparatus for rotary tyre and control system thereof
CN101378917A (en) * 2006-02-10 2009-03-04 谢夫勒两合公司 Seal arrangement for a tyre pressure-regulating device
CN103608196A (en) * 2011-06-18 2014-02-26 威伯科有限公司 Pressure control device for a tire inflating system with a rotary feedthrough, and tire pressure changing method
WO2014044259A1 (en) * 2012-09-21 2014-03-27 Schaeffler Technologies AG & Co. KG Air-guide arrangement for controlling tyre pressure
DE102013003562A1 (en) * 2013-03-01 2014-09-04 KT Projektentwicklungs - GmbH Vehicle axle assembly has annular chamber that is formed between two shaft sealing rings, axle body and hub by pressure medium line which extends through axle body or through one of two shaft sealing rings
CN104358951A (en) * 2014-09-30 2015-02-18 杭州优能特旋转接头制造厂 Long-life rotary joint
CN105221871A (en) * 2014-05-26 2016-01-06 重庆滟昭汽车科技有限公司 A kind of rotating sealing device for ransaxle
CN207310990U (en) * 2017-10-27 2018-05-04 李炼 Be rotatably connected ring

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147494A (en) * 1989-07-28 1992-09-15 Keeper Co., Ltd. Seal device for tire pressure-adjusting device
CN101378917A (en) * 2006-02-10 2009-03-04 谢夫勒两合公司 Seal arrangement for a tyre pressure-regulating device
CN101362423A (en) * 2007-10-04 2009-02-11 刘艳昭 Inflated and deflated apparatus for rotary tyre and control system thereof
CN103608196A (en) * 2011-06-18 2014-02-26 威伯科有限公司 Pressure control device for a tire inflating system with a rotary feedthrough, and tire pressure changing method
US20140076409A1 (en) * 2011-06-18 2014-03-20 Wabco Gmbh Pressure control device for a tire inflating system with a rotary feedthrough, and tire pressure changing method
WO2014044259A1 (en) * 2012-09-21 2014-03-27 Schaeffler Technologies AG & Co. KG Air-guide arrangement for controlling tyre pressure
DE102013003562A1 (en) * 2013-03-01 2014-09-04 KT Projektentwicklungs - GmbH Vehicle axle assembly has annular chamber that is formed between two shaft sealing rings, axle body and hub by pressure medium line which extends through axle body or through one of two shaft sealing rings
CN105221871A (en) * 2014-05-26 2016-01-06 重庆滟昭汽车科技有限公司 A kind of rotating sealing device for ransaxle
CN104358951A (en) * 2014-09-30 2015-02-18 杭州优能特旋转接头制造厂 Long-life rotary joint
CN207310990U (en) * 2017-10-27 2018-05-04 李炼 Be rotatably connected ring

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