阅读说明：本技术 链轮回转泵 (Sprocket rotary pump ) 是由 A·老班尼特 S·M·麦格温 于 2019-05-06 设计创作，主要内容包括：一种链轮回转泵,包括被配置为绕第一轴线旋转的外回转齿轮。外回转齿轮包括外齿轮体,而外齿轮体包括从外齿轮体向第一轴线延伸的多个内齿轮齿。链轮回转泵包括被配置为绕第二轴线旋转的内回转齿轮。内回转齿轮包括内齿轮体及从内回转齿轮远离第二轴线向外延伸的多个外齿轮齿。外齿轮齿与内齿轮齿啮合。旋转外回转齿轮会带动内回转齿轮旋转。链轮回转泵进一步包括与外回转齿轮整体联接的链轮,使得链轮和外回转齿轮共同形成一体式结构。链轮由链条驱动。(A sprocket rotary pump includes an outer rotary gear configured to rotate about a th axis, the outer rotary gear including an outer gear body and the outer gear body including a plurality of inner gear teeth extending from the outer gear body toward a th axis.)

1, A sprocket rotary pump comprising:

an outer rotary gear configured to rotate about an th axis, wherein the outer rotary gear includes an outer gear body including a plurality of inner gear teeth extending from the outer gear body toward the th axis;

an inner swing gear configured to rotate about a second axis, wherein the second axis is spaced apart from the th axis, the inner swing gear including an inner gear body and a plurality of outer gear teeth extending from the inner gear body away from the second axis, the plurality of outer gear teeth meshing with the plurality of inner gear teeth such that rotation of the outer swing gear results in rotation of the inner swing gear, and

a sprocket integrally coupled with the outer rotary gear such that the sprocket and the outer rotary gear collectively form an -style structure.

2. The sprocket rotary pump of claim 1 wherein the sprocket comprises a ring and a plurality of outer sprocket teeth extending from the ring.

3. The sprocket rotary pump of claim 2, wherein the ring is directly coupled to the outer gear body, the axis is parallel to the second axis, and each of the plurality of outer sprocket teeth is directly coupled to the ring.

4. The sprocket rotary pump of claim 3 wherein the plurality of internal gear teeth define an internal cavity sized to receive the internal rotary gear and the internal rotary gear is disposed entirely within the internal cavity.

5. The sprocket rotary pump of claim 4 further comprising a housing partially enclosing the outer rotary gear.

6. The sprocket rotary pump of claim 5 further comprising a cover partially surrounding the outer rotary gear.

7. The sprocket rotary pump of claim 6 wherein the housing and the cover collectively define an annular gap therebetween.

8. The sprocket rotary pump of claim 7, wherein the annular gap is sized to receive the plurality of outer sprocket teeth.

9. The sprocket rotary pump of claim 8, further comprising a chain engaged with the plurality of outer sprocket teeth.

10. The sprocket rotary pump of claim 9 wherein the annular gap can accommodate the portion of the chain and the plurality of outer sprocket teeth.

Technical Field

The present disclosure relates to sprocket rotary pumps, specifically the present disclosure describes sprocket integrated rotary pumps.

Background

Vehicle systems may include multiple pumps that supply lubricant to or more vehicle components.

Disclosure of Invention

The present disclosure describes types of rotary pumps integrated with sprockets.by integrally coupling sprockets with outer rotary gears, the package size and mass of the sprocket rotary pump is minimized.the sprocket rotary pump may be used as a charge pump or a scavenge pump.in embodiments, the sprocket rotary pump may be part of a vehicle system.the vehicle system may include internal combustion engines equipped with engine blocks.the sprocket rotary pump is supported by the engine block.A sprocket rotary pump may be in direct contact with the sprocket rotary pump.A sprocket rotary pump includes an outer rotary gear configured to rotate about a th axis.the outer rotary gear includes an outer gear body and the outer gear body includes a plurality of inner gear teeth extending from the outer gear body toward a th axis.the sprocket rotary pump includes an inner rotary gear configured to rotate about a second axis.a th axis is parallel to the second axis.the second axis is spaced from the th axis.the inner rotary gear includes an inner gear body and a plurality of outer gear teeth extending from the inner gear body away from the second axis.a plurality of outer gear teeth mesh with the plurality of inner gear teeth, and a plurality of outer rotary gear teeth engaging a plurality of outer rotary ring gear teeth extending from the outer rotary pump housing and a plurality of outer rotary ring enclosing outer rotary sprocket ring enclosing the outer rotary pump housing such that the outer rotary ring encloses a plurality of outer rotary chain wheels.

The foregoing and other features and advantages of the disclosure are apparent from the following detailed description of the best modes for carrying out the disclosure when taken in connection with the accompanying drawings.

Drawings

FIG. 1 is a schematic illustration of a vehicle including an internal combustion engine, a lubricant source, and a sprocket rotary pump in fluid communication with the lubricant source and the internal combustion engine, wherein the sprocket rotary pump may be a feed pump or a scavenge pump.

FIG. 2 is a schematic perspective cross-sectional view of the engine block and sprocket rotary pump of FIG. 1.

FIG. 3 is a schematic front view of the engine block and sprocket rotary pump of FIG. 1.

Fig. 4 is a schematic side view of the sprocket rotary pump of fig. 1.

Fig. 5 is a schematic perspective exploded view of the swivel (gerotor) of fig. 1.

FIG. 6 is a schematic perspective exploded view of the sprocket rotary pump housing, cover, outer rotary gear, shaft and inner rotary gear of FIG. 1.

Fig. 7 is a schematic cross-sectional side view of the sprocket rotary pump of fig. 1.

Detailed Description

Referring to FIG. 1, a vehicle system 10 includes a sprocket rotating pump 12. The sprocket wheel pump 12 may be configured as a supply pump 12 for delivering lubricant L (i.e., oil) to the vehicle component 13 and/or as a return pump 12b for returning lubricant L to a lubricant source 16 (e.g., a reservoir). The vehicle system 10 may be an automobile, truck, or other suitable device capable of transporting items or passengers. In the illustrated embodiment, the vehicle component 13 may be an internal combustion engine 14 equipped with an engine block 18. Accordingly, the sprocketed rotary pump 12 is in fluid communication with a vehicle component 13 (e.g., an internal combustion engine 14). The sprocket gerotor pump 12 is also in fluid communication with a lubricant source 16 (e.g., a reservoir) containing lubricant L (e.g., oil). Accordingly, the sprocketed rotary pump 12 may pump lubricant L from the lubricant source 16 to the vehicle component 13 (e.g., the internal combustion engine 14). The sprocketed rotary pump 12 may also return lubricant from the vehicle component 13 to the lubricant source 16.

Referring to fig. 2 and 4, one or more fasteners 20 connect the sprocketed rotary pump 12 directly to the engine block 18. in the illustrated embodiment, the fasteners 20 are bolts 22 that pass through the sprocketed rotary pump 12 and extend into the engine block 18 to directly couple the sprocketed rotary pump 12 with the engine block 18. a plastic bolt retainer 24 may be attached to each bolt 22 to retain the bolt in a fixed insertion position. the sprocketed rotary pump 12 is also supported by the engine block 18.

2-7, the sprocket rotary pump 12 is a positive displacement pump including an intake tube 26 in fluid communication with lubricant in an engine cylinder head cavity, the intake tube 26 defining an intake passage 28 (FIG. 5) allowing fluid flow of lubricant L, an O-ring may be placed around an annular portion 30 of the intake tube 26 to prevent intake of air, the sprocket rotary pump 12 further includes an outer rotary gear 34 and a housing 32 partially surrounding the outer rotary gear 34. one or more fasteners 20 (e.g., bolts 22) directly couple the intake tube 26 with the housing 32. the housing 32 further further includes a housing 40, a second housing flange 42 extending transversely from the housing 40, and a second housing flange 44 extending transversely from the housing 40. the housing 32 defines a second flange hole 46 through the housing flange 42 of and a second flange hole 48 through the housing flange 44. each of the flange hole 46 and the second flange hole 48 is suitably configured, sized and shaped to receive the fasteners 20 (e.g., bolts 22).

As described above, the sprocket rotary pump 12 includes the outer rotary gear 34, in addition to being configured to rotate about the th axis X1, the outer rotary gear 34 also includes an outer gear body 36 that includes a plurality of inner gear teeth 38 that extend from the outer gear body 36 to the th axis X1.

The sprocket gerotor pump 12 further includes an inner gerotor gear 50 configured to rotate about a second axis X2, an axis X1 of the outer gerotor gear 34 is spaced from (and parallel to) a second axis X2 of the inner gerotor gear 50. in other words, the second axis X2 is offset from the axis X1. the inner gerotor gear 50 includes an inner gear body 52 and a plurality of outer gear teeth 54 extending outwardly from the inner gear body 52 away from the second axis X2. the outer gear teeth 54 mesh with the inner gear teeth 38 of the outer gerotor gear 34. thus, rotating the outer gerotor gear 34 rotates the inner gerotor gear 50. the inner gear teeth 38 define an internal cavity 53. the internal cavity 53 is appropriately sized to accommodate the inner gerotor gear 50. specifically, the inner gerotor gear 50 is disposed entirely within the internal cavity 53. the inner gerotor gear 50 has n outer gear teeth 54, and the outer gerotor gear 34 has n +1 inner gear teeth 38, where n is a natural number greater than 2. the geometry of the inner gerotor gear 50 and the outer gerotor gear 34 divides the volume between n teeth into n volume that varies as the volume of the inner gerotor gear teeth and the outer gerotor gear teeth compress the volume of the outer gerotor gear teeth 26, which varies as the volume of the outer gerotor gear teeth decreases.

The sprocket rotary pump 12 further includes a sprocket 56 integrally coupled to the outer rotary gear 34 such that the sprocket 56 and the outer rotary gear 34 together form a -piece construction, the term "integrally coupled" refers to a construction made up of pieces or portions of a single construction, and does not include parts interconnected by fasteners, welds, fasteners, adhesives, or other connection methods the term " -piece construction" refers to a construction made up of a single indivisible assembly, and does not include a construction made up of parts interconnected by fasteners, welds, fasteners, adhesives, or other connection methods the sprocket 56 and the outer rotary gear 34 are integrally coupled such that the packing size and mass of the sprocket rotary pump 12 are minimized, thus creating additional packing space in the vehicle system 10 to allow the vehicle manufacturer to incorporate other devices into the vehicle system 10, the sprocket 56 includes a ring 58 and a plurality of outer chain 60 extending from the ring 58, the ring 58 is directly coupled to the outer rotary gear body 36, specifically, the ring 58 is integrally coupled to the outer rotary pump 12 such that the packing size of the sprocket 56 and the outer rotary pump 12 is reduced to the minimum size, the outer rotary ring 60, and each of the sprocket 60 is directly coupled to the sprocket 60, the sprocket 58, 1.

Sprocket rotary pump 12 further includes a cover 62 partially surrounding outer rotary gear 34, housing 32 and cover 62 together define an annular gap 64 therebetween, sprocket rotary pump 12 further includes a chain 66 partially disposed in annular gap 64, one or more fasteners 20 (e.g., bolts 22) couple cover 62 with housing 32 while maintaining annular gap 64 between cover 62 and housing 32. in the case of charge pump 12a, cover 62 defines an outlet 70 for delivering lubricant L to vehicle component 13. in the case of scavenge pump 12b, cover 62 defines an outlet 70 for delivering lubricant L to lubricant source 16. one or more seals 72 are coupled with outlet 70 to minimize lubricant leakage. another sprocket (not part of of meshing sprocket rotary pump 12) is coupled to the crankshaft and drives chain 66 to rotate outer rotary gear 34. chain 66 to mesh with outer sprocket teeth 60. rotating chain 66 will rotate outer rotary gear 34. annular gap 64 and only outer sprocket teeth 66 are received to partially receive chain 66 to maintain the same in tension with housing 66, thereby maintaining the same tension with housing 66 and with chain 66 to support chain 12, thereby maintaining the same in a tight bearing arrangement as housing 18, 5940, which may be in a tight bearing arrangement to absorb vibration.

The sprocket rotary pump 12 further includes a shaft 74 that passes through the cover 62, the outer casing 32 and the inner rotary gear 50. accordingly, the shaft 74 interconnects and provides support for the cover 62, the outer casing 32 and the inner rotary gear 50. the shaft 74 includes a end portion 76 (FIG. 7) and a second end portion 78 spaced from the end portion 76 along the second axis X2. the shaft 74 further includes a thrust/bearing surface 80. the shaft flange 80 is closer to the end portion 76 than the second end portion 78 of the shaft 74. the sprocket rotary pump 12 includes a bushing 82 and a second bushing 84. the bushing 82 is coupled to the end portion 76 of the shaft 74, and the second bushing 84 is coupled to the second end portion 78 of the shaft 74. the chain 66 is located in the annular gap 64 between the bushing 82 and the second bushing 84 to evenly distribute the load applied by the chain 66 so that the maximum load sharing is shared between the shaft 74 and the bearings 84 and the stress load 76.

While the best modes for carrying out the disclosure have been described in detail, those familiar with the art to which this disclosure relates will recognize various alternative designs and embodiments for practicing the disclosure within the scope of the appended claims.