CN2604539Y - Engine oil pump for motorcycle lubrication - Google Patents

Abstract

The utility model belongs to a lubricant pump which fits a motorcycle engine for a cooperative service. The lubricant pump comprises a body, a rotor chamber and a main shaft hole all equipped at the body, an internal rotor at a cycloidal gear, an external rotor at a cycloidal gear, a main shaft, a pin equipped at the main shaft, a gear, a cover plate of rotor chamber and, a lune oil duct equipped at the cover plate. At the lubricant pump, because an upper cover plate dedicated for bearing the main shaft is abandoned, and the height of the body, the internal rotor and the external rotor is lowered, at the same time, a bearing hole equipped at one end of the main shaft is moved to be equipped at the cover plate of the rotor chamber, and further, the internal rotor and the external rotor are changed to four teeth and five teeth and accordingly, an eccentric level of the main shaft hole at the body is increased, thereby, the weight and thickness of the body respectively can be lowered by a level of 50 per cent and a level from 20 per cent to 25 per cent. The utility model is characterized by simple structure, thin body, light mass, lower manufacture cost, and safe and reliable cooperative service with the engine. The utility model eliminates the defects caused by prior art including a complicated structure, a thick body, a high manufacture cost and a possible hidden safety trouble that the engine suddenly stalls for a possible interference between a clutch and the upper cover plate when a motorcycle performs a shifting.

Description

The lubricated oil pump of using of motorcycle

Technical field

The utility model belongs to the oil pump that is used for providing to motor lubricant oil in the motorcycle part, particularly a kind of can with the matching used oil pump of 200 h type engine hs.

Background technique

Conventional and the matching used inductance type oil pump of 200 type class motorcycle engines comprises the pump housing, is located at rotor chamber and spindle hole on the pump housing, inside and outside cycloid wheel rotor, lower cover plate with a pair of crescent shape oil duct, main shaft, the driving gear that connects with the main shaft outer end and the upper cover plate that is provided with main shaft outer end bearing hole.The internal rotor of this type of oil pump is 7 teeth, external rotor is 8 teeth, rotor chamber and the high 15mm of inside and outside rotor, add upper cover plate and thickness thereof, and have complex structure, the pump housing is thick, cost of production is higher, during engine gear, clutch and oil pump loam cake may interfere and cause motor flame-out suddenly motorcycle, jeopardize disadvantages such as driving, take advantage of personal security in the process of moving.

Summary of the invention

The purpose of this utility model is to guarantee on the basis that the background technique flow does not reduce, and improves purposes such as a kind of motorcycle of design is lubricated uses oil pump, and to reach simple in structure, volume is little, pump housing book, and is safe in utilization, reliable and reduce production costs.

Solution of the present utility model is to save loam cake, and offers a main shaft supporting hole on rotor chamber cover plate (lower cover plate), the stability when guaranteeing spindle; Reduce the pump housing simultaneously, pass the thickness of seed cell and inside and outside rotor, thereby effectively reduce the thickness of oil pump assy on the whole; After reducing inside and outside rotor axial thickness, unlikely so reduce in order to ensure flow, change internal rotor into 4 teeth, external rotor changes 5 teeth into, and with pump housing spindle hole to the corresponding increase of the offset of rotor chamber; In addition, former main shaft is connected with semicircle axis of a cylinder, the hole that the internal rotor center hole adopts, change pin and pin groove into and connect.Therefore, the utility model comprises the pump housing, is located at rotor chamber on the pump housing, spindle hole and screw is installed, and inside and outside cycloid wheel rotor is tightened to one with the pump housing and has the rotor chamber cover plate of a pair of crescent shape oil duct, main shaft and the driving gear that connects with its outer end; Key is also to be provided with a main shaft supporting hole on the rotor chamber cover plate, the inner of main shaft connects turnably with this bearing hole; Main shaft adopts cylinder and cylindrical hole to cooperate with corresponding internal rotor center hole, is being respectively equipped with a pin and pin groove on the main shaft and on the hole wall of internal rotor center, and main shaft connects with transferring power by both with internal rotor; And the spindle hole on the pump housing is e=1.50～1.60 with respect to the offset of rotor chamber.

Be respectively equipped with a pin and pin groove on the above-mentioned main shaft and on the hole wall of internal rotor center, this pin and pin groove all are located at the outer end by the rotor chamber cover plate.And described inside and outside cycloid wheel rotor, its internal rotor is 4 teeth, external rotor is 5 teeth.

The utility model is owing to saved the upper cover plate that is exclusively used in supporting spindle and reduced the pump housing and the thickness of rotor chamber and inside and outside rotor; Strengthened simultaneously that spindle hole changes 4 teeth and 5 teeth respectively into to the offset of rotor chamber and with inside and outside rotor on the pump housing; And will change into main shaft and connecting of internal rotor pin and pin groove connect, thereby under the constant situation of flow, oil pump assy weight can reduce by 1/2nd, thickness reduces by 20～25%, cost of production descends about 25%.Therefore, the utlity model has simple in structure, in light weight, pump housing book, cost of production is low, with the supporting characteristics such as safe in utilization, reliable of motor.

Accompanying drawing and description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A view.

Among the figure: 1, driving gear, 2, inserts, 3, main shaft, 4, back-up ring, 5, the pump housing, 6, the rotor chamber cover plate, 7, external rotor, 8, internal rotor, 9,13: crescent shape oil duct, 14, screw is installed, 15, clamping bolt (hole).

Embodiment

Present embodiment is an example with CG200 h type engine h oil pump: driving gear 1 tooth number Z=37, modulus m=1.75, tip diameter φ 67.6mm, standard pitch diameter φ 64.75mm, the thick 7mm of denticle, Gear center is half-cylindrical hole, its physical dimension and all same with background technique with the connecting mode and the inserts in the disk body 2 of main shaft.The pump housing 5 diameter phi 48mm, thick 16.1mm, rotor chamber diameter phi 2.3mm, dark 12mm; Spindle hole diameter phi 7.0mm, the relative eccentric amount e=1.53mm of rotor chamber, installation screw 14 that to establish two diameters on the pump housing be φ 7mm and the fastening screw 15 that connects with cover plate 6 of two M4.Internal rotor 8 is 4 teeth, tip diameter φ 16.1mm, root diameter φ 10.3mm, center-hole diameter φ 7.0mm, two pin grooves, 12 axial long 4mm on the hole wall, radially dark 1.65mm, wide 2.7mm, the thick 12mm of denticle; External rotor 7 numbers of teeth are 5 teeth, external diameter φ 23.0mm, top circle φ 19.2mm, root circle φ 13.10mm, the thick 12.0mm of denticle, pin 10 long 10mm, diameter phi 2.5mm.Main shaft 3 long φ 27mm, diameter phi 7.0mm,, outer end and gear 1 auxiliary section are the semicircle axle, the thick 6mm of semiaxis part, column pin hole diameter phi 2.7mm, centre distance circlip groove upper-end surface 25mm.The thickness of rotor chamber cover plate 6 and on crescent shape oil duct 9,13 etc. all with background technique with, but offering a diameter phi 7.0mm over against the spindle hole center line, the main shaft supporting hole 10 of dark 3.0mm.

The thick 28mm of present embodiment oil pump assy, gross weight 110g reduces by 21% and 49.1% than background technique respectively, and it is about 25% that cost descends, flow Q 〉=5.7L/4600rpm.

Claims (3)

1, the lubricated oil pump of using of a kind of motorcycle; Comprise the pump housing, be located at rotor chamber on the pump housing, spindle hole and screw is installed that inside and outside cycloid wheel rotor is tightened to one with pump and has the rotor chamber cover plate of a pair of crescent shape oil duct, main shaft and the driving gear that connects with its outer end; It is characterized in that also being provided with on the rotor chamber cover plate main shaft supporting hole, the inner of main shaft connects turnably with this bearing hole; Main shaft adopts cylinder and cylindrical hole to cooperate with corresponding internal rotor center hole, is being respectively equipped with a pin and pin groove on the main shaft and on the hole wall of internal rotor center, and main shaft connects with transferring power by both with internal rotor; And the spindle hole on the pump housing is e=1.50～1.60 with respect to the offset of rotor chamber.

2, use oil pump by the described motorcycle of claim 1 is lubricated, it is characterized in that reaching on the hole wall of internal rotor center on the described main shaft and be respectively equipped with a pin and pin groove, this pin and pin groove all are located at the outer end by the rotor chamber cover plate.

3, use oil pump by the described motorcycle of claim 1 is lubricated, it is characterized in that described inside and outside cycloid wheel rotor, its internal rotor is 4 teeth, and external rotor is 5 teeth.