EP3699428B1 - Cylindre de compresseur d'air, compresseur d'air, siège de véhicule, et véhicule - Google Patents

Cylindre de compresseur d'air, compresseur d'air, siège de véhicule, et véhicule Download PDF

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Publication number
EP3699428B1
EP3699428B1 EP17929243.8A EP17929243A EP3699428B1 EP 3699428 B1 EP3699428 B1 EP 3699428B1 EP 17929243 A EP17929243 A EP 17929243A EP 3699428 B1 EP3699428 B1 EP 3699428B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
air compressor
liner
piston type
type air
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
Application number
EP17929243.8A
Other languages
German (de)
English (en)
Other versions
EP3699428A4 (fr
EP3699428A1 (fr
Inventor
David Hong
Koon Fung Lam
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.)
Active Tools International HK Ltd
Original Assignee
Active Tools International HK Ltd
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Filing date
Publication date
Application filed by Active Tools International HK Ltd filed Critical Active Tools International HK Ltd
Publication of EP3699428A1 publication Critical patent/EP3699428A1/fr
Publication of EP3699428A4 publication Critical patent/EP3699428A4/fr
Application granted granted Critical
Publication of EP3699428B1 publication Critical patent/EP3699428B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/126—Cylinder liners

Definitions

  • the invention relates to the technical field of air compressors; specifically, the invention relates to an air compressor cylinder, an air compressor comprising the air compressor cylinder, and further relates to an automobile seat and an automobile comprising such air compressor.
  • Air compressors are used in multiple places in modern automobiles as driving or braking apparatus.
  • a piston type air compressor is employed in some automobile seats for adjustment of moving, lumbar support and the like thereof.
  • the piston type air compressor is a positive displacement compressor, the compression element thereof comprises a piston, the piston reciprocates in the cylinder thereby operating by way of causing the working volume to constantly change.
  • the manufacturing of the piston and cylinder has a direct effect on the operating performance of the air compressor.
  • FIG. 1 is a schematic view of a piston type air compressor in the prior art.
  • Such piston type air compressor has a driving portion 100 and an air compression execution portion 200.
  • the driving apparatus internal to the driving portion 100 may be a motor or the like, and a piston and a cylinder are disposed at the compression execution portion 200.
  • Laid-open publication WO2004/011804A1 discloses an improvement to the piston structural design in a piston type air compressor.
  • CN 206513530 U discloses an air compressor machine low friction coefficient's gas cylinder assembly, including a cylinder liner accommodating in its inside cavity a piston, an inner wall of the cylinder liner cavity being equipped with ceramic rete.
  • CN 203146271 U discloses an integrated automobile air compressor which mainly comprises a cylinder body and a crank case which are of an integrated structure and cast from aluminum alloy, the inner surface of the cylinder body being provided with a cylinder sleeve in a press-in mode, and the cylinder sleeve being made of cast iron.
  • CN 202370786 U discloses a totally oil-free lubrication high pressure air compressor.
  • the air compressor comprises a power device, a guide cylinder, a middle body, a cylinder, an upper pressing block, a lower pressing block, an upper lining plate and a lower lining plate.
  • CN 2305496 Y discloses an air compressor for tractors which is composed of a cylinder cover 10, an air cylinder 20, a crankshaft device 30, and a separation device 40.
  • the prior art mainly comprises two modes: one is to machine a cylinder block firstly, and then connect the cylinder block with the outer housing of the air compressor; another is to produce the outer shell (including the cylinder) of the air compressor through diecasting molding, so that the processing requirement for the cylinder block is directly achieved.
  • a first aspect of the present invention provides a cylinder having the features of claim 1.
  • a smoothness of an inner surface of the liner is greater than the smoothness of a surface of the cylinder block itself.
  • the liner is die-cast together with the cylinder block.
  • the inner sidewall of the liner is in a straight cylindrical shape, and shape and size of a cross-section of the liner at both ends are the same.
  • a second aspect of the present invention provides a piston type air compressor, wherein a cylinder of the air compressor is the cylinder of any of the foregoing first aspects.
  • a third aspect of the present invention provides an automobile seat, wherein the piston type air compressor of the foregoing second aspect is provided in the automobile seat.
  • a fourth aspect of the present invention provides an automobile, wherein the automobile is provided with the piston type air compressor of the foregoing second aspect, and/or the automobile is provided with the automobile seat of the foregoing third aspect.
  • FIG. 2 is a schematic view of a cylinder-piston mechanism of an air compressor according to one embodiment of the present invention.
  • a housing 1 of an air compressor that, along with a housing cover 2, collectively constitutes a chamber 10, within which a crank 3 and a piston 5 connected with a push rod 4 may be housed.
  • An integral cylinder 7 is formed at one end of the housing 1.
  • a cylinder block as a body part of the cylinder 7 is used for forming a compression cavity, and a sealing ring 6 is disposed on the piston 5 and fits within the cylinder block part of the cylinder 7.
  • the cylinder 7 is connected at the end with an air outlet 8.
  • the housing cover 2 and the air outlet 8 are secured to the housing 1 in a removable manner. For example, they may be threaded or snapped onto the housing 1.
  • the air outlet 8 is in threaded connection with one end portion of the cylinder 7. It will be understood that the manner of connection in the illustrated embodiments is exemplary only.
  • the center hole 31 of the crank 3 in the figure is adapted to be connected on a drive shaft of a drive motor (not shown).
  • the opposite end of the push rod 4 from the position of the piston 5 may be connected to the eccentric hole 32 of the crank 3.
  • the connection of the push rod 4 at the eccentric hole 32 is an movable connection, for example, a bearing 41 may be disposed at this end of the push rod 4 to reduce rotational resistance.
  • the piston 5 may be secured at the other end of the push rod 4, and a sealing ring 6 may be disposed on the outer periphery of the piston 5, and the piston 5 will reciprocate with the push rod 4 to change the volume of the compression cavity 71.
  • the presence of the sealing ring 6 prevents excessive gas leakage from the compression cylinder toward the rear of the piston 5.
  • the motor drives the crank 3 to rotate along the axis O, and one end of the push rod 4 rotates with the eccentric hole 32 of the crank 3, the other end connected to the piston 5 push the piston 5 to reciprocate within the cylinder 7 and change the volume of the compression cavity.
  • the air volume of the compression cavity decreases, the gas is discharged from the air outlet 8 to be used for different purposes depending on different applications.
  • a liner 9 is attached to the inner wall at the cylinder block portion defining a cavity within the cylinder 7.
  • the cylinder 7 is an integral part of the housing 1 of the air compressor in the illustrated embodiment, it is not necessary for the cylinder to have a integrally molded housing; the cylinder 7 may absolutely be manufactured separately in other embodiments and then secured to housing 1 in an appropriate manner. These appropriate manners include, but not limited to, various existing manners such as threading, snapping, welding, gluing, and the like.
  • the housing 1 may also be die cast onto the cylinder 7 after separate manufacturing of the cylinder 7.
  • the liner 9 is made of a different material than the cylinder block portion of the cylinder 7.
  • the liner 9 is made independently of the cylinder 7, the manufacturing method of which is also different from the cylinder 7.
  • the liner 9 is a deep drawn tube made of aluminum or aluminum alloy; while the cylinder 7 is die cast by zinc or zinc alloy with a manufactured liner, i.e., a secondary injection molding using aluminum or an aluminum alloy within the zinc mold, thereby the aluminum can have a smoother surface than the die cast zinc or zinc alloy. Achieving a smooth surface by polishing the die cast zinc or zinc alloy parts is costly.
  • the cylinder 7 may be integrally cast with the housing 1 of the air compressor.
  • the cylinder 7 (or along with the housing is die cast together with the liner 9 after the inner liner 9 is made; it is also possible to have a shape mating at the same time, for example, a protrusion 71 is formed on the inner sidewall of the cylinder block, bonded into a recess 91 on the outer sidewall of the liner 9, further enhancing axial position-limiting performance of the two.
  • the protrusion 71 and the recess 91 may extend over the entire circle respectively in a respective circumferential direction; they may also distribute dispersedly in a circumferential direction thereby also enhancing the circumferential position limiting performance of the two.
  • the liner 9 may be separately manufactured and then bonded into the cylinder 7, this facilitates machining of the inner surface of the liner 9 in a low cost manner to achieve higher surface precision, i.e., smoothness, reducing the difficulty of the process, and make the defect rate easy to be controlled.
  • the liner 9 defines a compression cavity 92 of the air compressor. It can be seen that it will be easy to, by independent process in advance, make the smoothness of the inner surface of the inner liner 9, i.e., the compression cavity, be able to be at least greater than the surface smoothness of the cylinder's cylinder block itself. Such improvement of the smoothness of the inner surface of the compression cavity effectively increases the service life of the air compressor, significantly increases the number of working cycles, improves the working efficiency, reduces the production cost, and can avoid the high local performance requirements of the material of the molded part.
  • Such separately manufactured liner may be machined from deep drawn tube having the advantage that the inner sidewalls of the compression cavities no longer have draft angles like in casting.
  • the inner sidewall of such separately manufactured liner may be in a straight cylindrical shape, and the shape and size of the cross-section of the liner at both ends are the same. Due to the elimination of draft angle, this straight cylindrical design is advantageous for increasing the degree of matching of the piston within the compression cavity, avoiding the degradation of its performance and durability due to the friction and angle of the inner sidewalls of the compression cavity, and making the product more compact and make the work efficiency higher.
  • Another aspect of the invention also provides a piston type air compressor, wherein the cylinder of the air compressor is the cylinder of any of the foregoing embodiments. It is discovered in one aspect of the present invention, using separately manufactured liner in a cylinder of a piston type air compressor can not only increase the flexibility of cylinder manufacturing and air compressor manufacturing, but also makes it easy to achieve higher surface precision inside the liner when the liner is manufactured separately, improves the working efficiency of the air compressor, and can greatly prolong the service life of the air compressor.
  • Such piston type air compressor may have a wide application in the field of automobiles. For example, it may be used in the automobile for driving the automobile seat move forward and backward, adjusting lumbar support or the support of body by the seat, and the like. The air compressor may also be used for different occasions such as coffee machines, massage chairs and the like.
  • Yet another aspect of the present invention provides an automobile seat having a piston type air compressor in accordance with the foregoing aspects of the present invention.
  • the piston type air compressor may be used in the automobile seat for driving the automobile seat move forward and backward, adjusting the lumbar support, the wrap of body by the seat or to provide the function of massage chairs and the like.
  • Still another aspect of the present invention further provides an automobile that may have a piston type air compressor of the foregoing aspects, and/or that may have the automobile seat of the foregoing aspect. It can be seen that the arrangement of the air compressor in the automobile thus provided is not limited to being in the automobile seat. It will be appreciated that the automobile seats and automobiles in these aspects of the present invention will have the advantages respective to the foregoing air compressors.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Claims (8)

  1. Cylindre (7) pour un compresseur d'air de type à piston,
    - une cavité étant définie dans un bloc-cylindre du cylindre (7),
    - une chemise (9) étant attachée à une paroi latérale intérieure de la cavité,
    - la chemise (9) étant solidement liée à la paroi latérale intérieure, et
    - la chemise (9) définissant une cavité de compression (92) du compresseur d'air,
    caractérisé en ce que
    - la chemise (9) est un tube embouti fait d'aluminium ou d'un alliage d'aluminium, et
    - le cylindre (7) est fait de zinc ou d'un alliage de zinc et est moulé sous pression avec la chemise (9).
  2. Cylindre selon la revendication 1, dans lequel une surface intérieure de la chemise (9) est plus lisse qu'une surface du bloc-cylindre lui-même.
  3. Cylindre selon la revendication 1 ou 2, dans lequel la chemise (9) est moulée sous pression avec le bloc-cylindre.
  4. Cylindre selon la revendication 1 ou 2, dans lequel l'assujettissement entre la chemise (9) et le bloc-cylindre est obtenu par un raccord vissé.
  5. Cylindre selon l'une quelconque des revendications 1 à 4, dans lequel la paroi latérale intérieure de la chemise (9) présente une forme cylindrique droite et la forme et la taille d'une section transversale de la chemise (9) sont les mêmes aux deux extrémités.
  6. Compresseur d'air du type à piston, qui comprend un cylindre, caractérisé en ce que le cylindre du compresseur d'air est le cylindre (7) selon l'une quelconque des revendications 1 à 5.
  7. Siège d'automobile, qui comprend un compresseur d'air du type à piston, caractérisé en ce que le compresseur d'air du type à piston est le compresseur d'air du type à piston selon la revendication 6.
  8. Automobile, qui comprend un compresseur d'air du type à piston et/ou un siège d'automobile, caractérisée en ce que le compresseur d'air du type à piston est le compresseur d'air du type à piston selon la revendication 6 et/ou le siège d'automobile est le siège d'automobile selon la revendication 7.
EP17929243.8A 2017-10-19 2017-10-19 Cylindre de compresseur d'air, compresseur d'air, siège de véhicule, et véhicule Active EP3699428B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/106823 WO2019075686A1 (fr) 2017-10-19 2017-10-19 Cylindre de compresseur d'air, compresseur d'air, siège de véhicule, et véhicule

Publications (3)

Publication Number Publication Date
EP3699428A1 EP3699428A1 (fr) 2020-08-26
EP3699428A4 EP3699428A4 (fr) 2021-03-17
EP3699428B1 true EP3699428B1 (fr) 2022-05-25

Family

ID=66173085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17929243.8A Active EP3699428B1 (fr) 2017-10-19 2017-10-19 Cylindre de compresseur d'air, compresseur d'air, siège de véhicule, et véhicule

Country Status (4)

Country Link
US (1) US20210164463A1 (fr)
EP (1) EP3699428B1 (fr)
PL (1) PL3699428T3 (fr)
WO (1) WO2019075686A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19501220A1 (de) * 1995-01-17 1996-07-18 Knorr Bremse Systeme Verdichter
CN2305496Y (zh) * 1997-04-07 1999-01-27 龙口市气泵集团有限公司 拖拉机用空气压缩机
JP3309765B2 (ja) * 1997-05-16 2002-07-29 三菱電機株式会社 高圧燃料供給ポンプ
AT414269B (de) 2002-07-24 2006-10-15 Ventrex Automotive Gmbh Einrichtung zur verdichtung von gasen
US20060292022A1 (en) * 2005-06-24 2006-12-28 Samsung Gwangju Electronics Co., Ltd. Cylinder assembly for compressor and assembling method thereof
US20080219868A1 (en) * 2005-07-21 2008-09-11 Brian Robert Bonniface Linear Compressor Cylinder and Head Construction
CN202370786U (zh) * 2011-12-19 2012-08-08 安庆市佰联无油压缩机有限公司 全无油润滑高压空压机
EP2711529A1 (fr) * 2012-09-20 2014-03-26 MWM GmbH Piston avec réservoir d'huile
CN203146271U (zh) * 2013-01-28 2013-08-21 龙口市大川活塞有限公司 一体式汽车空压机
CN206513530U (zh) * 2017-01-13 2017-09-22 厦门闳图盛道科技有限公司 一种空压机低摩擦系数的气缸套组件
CN207363851U (zh) * 2017-10-19 2018-05-15 东莞冠翔电机有限公司 空压机气缸、空压机、汽车座椅及汽车

Also Published As

Publication number Publication date
EP3699428A4 (fr) 2021-03-17
WO2019075686A1 (fr) 2019-04-25
PL3699428T3 (pl) 2022-09-19
EP3699428A1 (fr) 2020-08-26
US20210164463A1 (en) 2021-06-03

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