US20020114709A1 - Compressor - Google Patents

Compressor Download PDF

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Publication number
US20020114709A1
US20020114709A1 US10/074,317 US7431702A US2002114709A1 US 20020114709 A1 US20020114709 A1 US 20020114709A1 US 7431702 A US7431702 A US 7431702A US 2002114709 A1 US2002114709 A1 US 2002114709A1
Authority
US
United States
Prior art keywords
bolts
rigid plate
housing
compressor
plate
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.)
Abandoned
Application number
US10/074,317
Other languages
English (en)
Inventor
Masakazu Murase
Naoya Yokomachi
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.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
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
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI reassignment KABUSHIKI KAISHA TOYOTA JIDOSHOKKI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MURASE, MASAKAZU, YOKOMACHI, NAOYA
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of US20020114709A1 publication Critical patent/US20020114709A1/en
Abandoned legal-status Critical Current

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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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1081—Casings, housings

Definitions

  • the present invention relates to a compressor and more particularly to a compressor that suppresses deformation of a thrust surface receiving thrust force inside a housing of the compressor.
  • FIG. 5 shows a structure of a conventional swash plate type compressor.
  • a front housing 1 and a rear housing 2 are secured by bolts 4 via a gasket 3 .
  • the front housing 1 and the rear housing 2 constitute a housing 5 of the compressor.
  • a step 6 is formed inside the front housing 1 .
  • a retainer plate 7 , a discharge valve plate 8 , a valve plate 9 , a suction valve plate 10 are fitted into the front housing 1 , so as to contact with the step 6 .
  • a suction chamber 12 and a discharge chamber 13 are defined between the retainer plate 7 and a front end wall 11 of the front housing 1 such that the suction chamber 12 and the discharge chamber 13 are separated by a separating wall 14 .
  • a cylinder block 15 is fitted into the front housing 1 so as to contact with the suction valve plate 10 .
  • the cylinder block 15 is secured to the front housing 1 by bolts 16 .
  • a drive shaft 17 is rotatably supported by the cylinder block 15 , the front housing 1 and the rear housing 2 .
  • the one end of the drive shaft 17 protrudes outwardly from the front housing 1 , and connects with a driving source, such as an engine or a motor of a vehicle, which is not shown.
  • a lug plate 18 as a rotary support member is secured to the drive shaft 17 , and a swash plate 19 is connected with the lug plate 18 .
  • the drive shaft 17 extends through a through hole, which is formed through the center of the swash plate 19 .
  • a pair of guide pins 20 extending from the swash plate 19 is slidably fitted into a pair of guide holes 21 formed on the lug plate 18 .
  • the swash plate 19 integrally rotates with the drive shaft 17 by connecting the guide pins 20 and the guide holes 21 .
  • the swash plate 19 is slidably tiltably supported by the drive shaft 17 so as to slide in an axial direction of the drive shaft 17 .
  • the lug plate 18 is rotatably supported by a thrust bearing 22 , which is disposed on an inner wall of the rear end of the rear housing 2 .
  • the cylinder block 15 forms a plurality of cylinder bores 23 surrounding the drive shaft 17 , and each cylinder bore 23 slidably accommodates each associated piston 24 .
  • Each piston 24 is coupled to the periphery of the swash plate 19 through a pair of shoes 25 . As the swash plate 19 integrally rotates with the drive shaft 17 , each piston 24 reciprocates in the axial direction of the drive shaft 17 in the associated cylinder bore 23 through shoes 25 .
  • the bolts 4 connecting the front housing 1 and the rear housing 2 are arranged in the vicinity of a thrust bearing 22 .
  • the thrust surface of the inner wall of the rear end of the rear housing 2 deforms due to the bolts 4 , the deformation of the thrust surface causes an eccentric load to act on the thrust bearing 22 .
  • the thrust bearing 22 With a consequence of a noise during an operation of the compressor and shortened durability of the thrust bearing 22 .
  • the present invention addresses the above-mentioned problems traceable to an eccentric load by suppressing deformation of a thrust surface of an inner wall of a housing in a compressor.
  • a compressor has a front housing, a rear housing, a plurality of bolts, and a rigid plate.
  • the rear housing is connected to the front housing.
  • the bolts connect the front housing and the rear housing in an axial direction.
  • the rigid plate is disposed between an axial end surface of one of the front and rear housings and heads of the bolts.
  • the front housing and the rear housing are connected by the bolts via the rigid plate.
  • FIG. 1 is a longitudinal cross-sectional view of a compressor according to a first embodiment of the present invention
  • FIG. 2 is a rear elevation of a compressor illustrated in FIG. 1;
  • FIG. 3 is a rear elevation of a compressor according to a second embodiment
  • FIG. 4 is a rear elevation of a compressor according to a third embodiment.
  • FIG. 5 is a longitudinal cross-sectional view of a compressor of a conventional art.
  • FIG. 1 shows a structure of a variable displacement compressor according to the first embodiment of the present invention.
  • a front housing 1 and a rear housing 26 which are made of aluminum, are connected via a gasket 3 .
  • a housing 27 is constructed.
  • a rigid plate 28 which is made of iron, is annular in shape.
  • the rigid plate 28 is disposed on the rear end surface of the rear housing 26 .
  • the rigid plate 28 has a bearing surface for bolts 4 , and the bolts 4 extends through the rigid plate 28 and the rear housing 26 and is screwed on the front housing 1 .
  • a plurality of bolts 4 is disposed in equiangular positions on an identical circumference.
  • the front housing 1 and the rear housing 26 are connected in an axial direction of the drive shaft 17 .
  • a step 6 is formed inside the front housing 1 .
  • a retainer plate 7 , a discharge valve plate 8 , a suction valve plate 10 and a valve plate 9 are fitted into the front housing so as to contact with the step 6 .
  • a suction chamber 12 and a discharge chamber 13 are defined between the retainer plate 7 and a front end wall 11 of the front housing 1 such that the suction chamber 12 and the discharge chamber 13 are separated by a separating wall 14 .
  • a cylinder block 15 is fitted into the front housing 1 so as to contact with the suction valve plate 10 .
  • the cylinder block 15 is secured to the front housing 1 by bolts 16 .
  • a drive shaft 17 is rotatably supported by the cylinder block 15 , the front housing 1 and the rear housing 26 .
  • the one end of the drive shaft 17 protrudes outwardly from the front housing 1 , and is connected with a driving source, such as an engine or a motor of a vehicle, which is not shown in FIG. 4 in the rear housing 26 .
  • a lug plate 18 is secured to the drive shaft 17 , and a swash plate 19 is connected with the lug plate 18 .
  • the drive shaft 17 extends through a through hole, which is formed through the center of the swash plate 19 .
  • a pair of guide pins 20 extending from the swash plate 19 is slidably fitted into a pair of guide holes 21 formed on the lug plate 18 .
  • the swash plate 19 integrally rotates with the drive shaft 17 by connecting the guide pins 20 and the guide holes 21 .
  • the swash plate 19 is slidably tiltably supported by the drive shaft 17 so as to slide in an axial direction of the drive shaft 17 .
  • the lug plate 18 is rotatably supported by a thrust bearing 22 , which is disposed on an inner wall of the rear end of the rear housing 26 .
  • the cylinder block 15 forms a plurality of cylinder bores 23 surrounding the drive shaft 17 , and each cylinder bore 23 slidably accommodates each associated piston 24 .
  • Each piston 24 is coupled to the periphery of the swash plate 19 through a pair of shoes 25 . As the swash plate 19 integrally rotates with the drive shaft 17 , each piston 24 reciprocates in the axial direction of the drive shaft 17 in the associated cylinder bore 23 through shoes 25 .
  • the front housing 1 and the rear housing 26 are secured by a plurality of bolts 4 via the annular rigid plate 28 .
  • force tightening each bolt 4 is dispersed, and is equally acted on the rear end surface of the rear housing 26 . Therefore, deformation of an inner wall of the rear end of the rear housing 26 , that is, deformation of a thrust surface, is suppressed, thus inhibiting an eccentric load from acting on a thrust bearing 22 .
  • the rigid plate 28 may be divided into some pieces as shown in FIG. 3, and each rigid plate 28 supports the associated heads of the bolts 4 .
  • the rigid plate 28 used in the above embodiment is annular in shape, however, the shape of the rigid plate 28 is not limited.
  • the rigid plate may be disk-shaped, and a plurality of bolts may be positioned in equiangular positions on an identical circumference, as shown in FIG. 4.
  • the rigid plate 28 is disposed on the rear end surface of the rear housing 26 in the above embodiment, the thrust bearing 22 is disposed on the inner wall of the rear end of the rear housing 26 .
  • the rigid plate should be disposed on an end surface of a front housing if a compressor has a thrust bearing disposed on an inner wall of a front end of the front housing 1 .
  • the rigid plate is disposed between one of the front and rear housings and heads of the bolts.
  • the front housing and the rear housing are connected by the bolts via the rigid plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
US10/074,317 2001-02-19 2002-02-12 Compressor Abandoned US20020114709A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001041927A JP2002242839A (ja) 2001-02-19 2001-02-19 圧縮機
JP2001-041927 2001-02-19

Publications (1)

Publication Number Publication Date
US20020114709A1 true US20020114709A1 (en) 2002-08-22

Family

ID=18904300

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/074,317 Abandoned US20020114709A1 (en) 2001-02-19 2002-02-12 Compressor

Country Status (3)

Country Link
US (1) US20020114709A1 (de)
EP (1) EP1233180A2 (de)
JP (1) JP2002242839A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140003971A1 (en) * 2011-01-27 2014-01-02 Robert Bosch Gmbh Hydrostatic machine, in particular axial piston machine
US20240035463A1 (en) * 2022-07-28 2024-02-01 Steven M Sunday Compressor assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057367A1 (de) * 2004-11-27 2006-06-01 Zexel Valeo Compressor Europe Gmbh Axialkolbenverdichter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140003971A1 (en) * 2011-01-27 2014-01-02 Robert Bosch Gmbh Hydrostatic machine, in particular axial piston machine
US9458839B2 (en) * 2011-01-27 2016-10-04 Robert Bosch Gmbh Hydrostatic machine, in particular axial piston machine
US20240035463A1 (en) * 2022-07-28 2024-02-01 Steven M Sunday Compressor assembly
US11952993B2 (en) * 2022-07-28 2024-04-09 Steven M Sunday Compressor assembly

Also Published As

Publication number Publication date
EP1233180A2 (de) 2002-08-21
JP2002242839A (ja) 2002-08-28

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MURASE, MASAKAZU;YOKOMACHI, NAOYA;REEL/FRAME:012597/0257

Effective date: 20020205

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION