US5055004(Stroke control assembly for a variable displacement compressor)

US5055004(General Motors Corporation)

wobble plate:揺動板
displacement: 容量
swash plate: 斜板

離間：
1) "In this type of compressor, a plurality of cylinders are equally angularly spaced about a cylinder block and compressor housing, and equally radially spaced from the axis of a central drive hub."

2) "The spacing of the drive pins 28 and the mating of the flats 44, 46 prevent skewing of the journal 26 about any other axis."

往復動：
1) "A piston is mounted for reciprocating motion in each of the cylinders."

2) "A journal or swash plate 26 is positioned to provide the actual driving action to reciprocate the pistons 22."

3) "The pistons 22 do not reciprocate in this operative situation."

容量：
"By varying the angle of the socket plate relative to the drive hub, in response to internal differential gas pressure, the stroke of the pistons and, therefore, the displacement or capacity of the compressor is varied."

ジャーナル：
"A drive journal in the form of a disc and associated with the central drive hub is the rotating component that actually engages the socket plate."

実質上、実質的：
"The journal is in substantially parallel driving relationship with the socket plate at all times"

一致：
" When the axes of the socket plate and journal are substantially coincident with the axis of the central drive hub, the compressor is operating at zero compression or zero stroke."

場合：
" Where the axes of the socket plate and journal are at their extreme allowable angle relative to the axis of the drive hub, the compressor is operating at full compression or full stroke."

理解される、分かる：
1) " It can be appreciated that the stroke of the pistons is infinitely adjustable between zero stroke and full stroke as the socket plate and journal pivot from axial coincidence with the central drive hub to the extreme position."

2) "Thus, in this position, it should be appreciated that the pistons 24 are reciprocated through their full stroke."

間の差：
"More particularly, the differential between the internal housing or crankcase pressure and the suction pressure of the compressor determines the angle of the assembly, and accordingly the stroke or displacement of the compressor. While prior art compressors thus rely primarily on the net force created by the compressor housing-suction pressure differential to pivot the assembly."

直線化：
"Such an assembly would thus improve stroke controllability by linearizing the relationship between the overall upstroking/destroking control force and the desired corresponding piston stroke."

wherein:
"Reference is made to the drawing and in particular to FIGS. 1 and 2 wherein is shown a variable displacement socket plate compressor 10"

想定：
" The preferred embodiment of the present invention is contemplated for use with a refrigerant compressor having seven cylinder bores 20."

摺動：
"A piston 22 is slidingly engaged for reciprocable motion within each of the cylinder bores 20."



外側に（まで）延在：
" The drive shaft 25 of the hub 24 extends externally of the compressor housing 16 to engage the driving pulley of an automobile engine (not shown)."

そこから：
"During engine operation, power is transmitted from the engine to the drive shaft 25 and thence to the drive hub 24."

載る、載置：
1) "the journal 26 actually mounts on the drive hub 24 with a pair of spaced, pivotal drive pins 28 received within spaced kidney slots 29 (see FIG. 3) formed on flanges 30."

2) " At present, suffice it to say that this pivotal mounting of the journal 26 on the drive hub 24 causes the journal 26 to rotate with the drive hub."



圧入、プレス嵌め：
1) "The drive pins 28 are press fit into holes in a corresponding set of journal ears 32."

2) "A snap ring 38 and keyway/press fit 39 and a second snap ring 38A and a thrust washer 38B provide for thrust loading of bearing 34 and locks the assembly together."

並列、並置：
" The socket plate 14 is in juxtaposition and nutates with the journal 26, but does not rotate."

固定：
"A combination of two thrust needle bearings 34 and 34A and a radial needle bearing 34B secures the journal 26 to the wobble assembly formed by the socket plate 14 and a Rzeppa joint 36."

分詞：
1) "The angle of the journal 26 relative to the drive hub 24 can be varied or adjusted, thus determining the precise path traveled by the socket plate 14."（結果）

2) "Accordingly, it can be appreciated that these concepts provide not only improved pivoting action of the journal 26 minimizing stress exerted at the driving interface with the socket plate 14"（結果） 

3) the controlled gas pressure in the housing interior 48 acting on the back face of the pistons 22"

4) "The compression spring 56 exerts the force urging the shaft 52 towards the full compression mode along the full range of movement."

最大：
"More specifically, when the journal 26 is positioned at a substantially maximum angle as shown in FIG. 1, the nutating motion of the socket plate 14 is at a maximum."

につれて、伴う：
" The pivoting action of the journal 26 as it follows the drive hub 24 between the zero stroke position and the full stroke position, is particularly shown in FIG. 3."

揺動：
" Thus, the pivoting or swinging motion of the journal 26 with respect to the drive hub 24 (shown in FIG. 3) is limited or restricted, and thus desirably stabilized and controlled."

駆動係合：
" The driving engagement with the socket plate 14 is very stable"

therein:
"The spaced kidney slots 29 are an important part of the stroke control assembly in a similar manner in that the drive pins 28 are controlled by a limited range of motion therein."

至る（？）：
"This controlled movement aids in compressor efficiency by allowing the journal 26 to seek a radially centered position (as viewed in FIG. 3) to further assist in guiding and centering the pistons 22.（ジャーナル26が径方向中心位置に至ることを許容することにより）

協働：
1) "The radially centered stability of the assembly (again reference to FIG. 3) is further assisted by the design of the ball grooves in the Rzeppa joint 36, allowing the socket plate 14 to cooperatively travel with the journal 26." 

2) "The socket plate 14 cooperates with the shaft 52 through the Rzeppa joint 36."

3) "The spring force also coacts with the head pressure of the compressor, providing both an additional upstroking force and further balance around the entire compressor."
 
Rzeppa joint


上述、上記のように：
"As set forth above, the angle of the socket plate 14/journal 26 assembly results primarily from controlling the differential refrigerant gas pressure"

参照番号跨ぎ：
"More particularly, compressor 10 operation is based on the relationship between the pre-set suction pressure that acts on the front face of the pistons 22 during the suction phase"

働く、及ぼされる：
"In full pre-set operation with minimum housing pressure, the net or differential force exerted on the pistons 22 is such as to provide full piston stroke"

参照番号：
"This differential pressure control is provided by a control valve/pressure source, denoted schematically in FIGS. 1 and 2 as numeral 50." 

与える：
"The needle bearing 54 pressed into the rotary drive hub 24 allows the hub to rotate around the shaft 52 without imparting rotary motion thereto." 

換言すれば：
"To put it another way, as spring 56 urges the shaft 52 away from the valve plate 58, the socket plate 14/journal 26 assembly is urged towards the full stroke position."