CN2607457Y

CN2607457Y - Engine oil pump for motorcycle engine

Info

Publication number: CN2607457Y
Application number: CN 03233086
Authority: CN
Inventors: 何宁
Original assignee: Zigong Chuanli Industry Co ltd
Current assignee: Zigong Chuanli Industry Co ltd
Priority date: 2003-02-08
Filing date: 2003-02-08
Publication date: 2004-03-24
Anticipated expiration: 2013-02-08

Abstract

The utility model discloses an oil pump cooperating with engine of motorcycle in use. The oil pump comprises a pump body, an inner and an outer epicycloidal wheels which are arranged in a rotator chamber of the pump body, a principal shaft, a pin, a gear and a cover plate which are arranged on the principal shaft and a pair of crescent oil passages on the cover plate. In the utility model, the pin is arranged on the head of inner rotator of the principal shaft, a pair of pins is arranged in central hole of the inner rotator. The pins cooperate with each other during power transmission so as to prevent turbulence of the principal shaft and the gear and cancel pressure plate which is used for preventing turbulence of the principal shaft and the gear in traditional technologies. The oil pump is characterized in simple, compact, proper and reliable structure, small cubage, low production cost, good coordination with the engine during assembly, easy disassembly and convenient use. The utility model overcomes the deficiencies in traditional technologies including complicated structure, weak integral performance, large cubage, high production cost, inconvenient installation and disassembly.

Description

The motorcycle engine oil pump

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 156 h type engine hs.

Background technique

Routine comprises the pump housing, is located at rotor chamber and spindle hole on the pump housing with 156 matching used oil pump of type class motorcycle engine such as YB100-HT, inside and outside rotor, main shaft and gear assembly, rotor chamber cover plate and be located at crescent shape on this cover plate into and out of oil duct prevents main shaft and gear axial motion and the pressing plate that connects with motor.The main shaft of this type of oil pump and internal rotor center hole are owing to adopt semicircle axle plug-in type to connect to come transferring power, axial motion takes place when preventing main shaft and fastening with it all-in-one-piece (power) working gear, therefore a special pressing plate must be set and corresponding packing ring limits it axially freely to go here and there, this pressing plate be owing to cannot be directly fixed on the pump housing or the pump assembly, can only at gear and spindle part is loaded on the pump housing and pump body is placed in it main shaft outer end after being loaded on motor again and be anchored on the motor.Therefore, there is complex structure in such oil pump, design is unreasonable, integrity is poor, volume is big, the cost of production height, and assembling and dismounting are all than disadvantages such as troubles.

Summary of the invention

The purpose of this utility model is the defective that exists at background technique, improves a kind of motorcycle oil pump of design, reaching simplified structure, reduced volume and good integrity, use reliable, installation and convenient disassembly, purpose such as reduce production costs.

Solution of the present utility model is that the pressing plate that will be exclusively used in restriction main shaft and gear assembly axial motion in the background technique saves, and between main shaft and internal rotor, set up a pin, by pin and corresponding pin-and-hole, cotter way both are connected into one, both transferring power, limit the main shaft axial motion again, thereby realize its purpose.Therefore, the utility model comprises the pump housing, is located at rotor chamber, spindle hole, bolt hole on the pump housing, inside and outside cycloid wheel rotor, and with the cover plate of a pair of crescent shape oil duct, main shaft and gear assembly; Key is also to be provided with a pin on the main shaft of rotor chamber being positioned at, and the relevant position on the internal rotor center bore inner wall then is provided with the pin groove, and main shaft and internal rotor are connected into one by this pin and pin groove.

Above-mentioned pin groove both can be located at the outer end of internal rotor, also can be located at its inner, and the pin on the main shaft also was located at position correspondingly thereupon.In order to strengthen the combination force of nylon gear and main shaft in main shaft and the gear assembly, in Gear center and main shaft connecting part, also be provided with plate body formula abnormity inserts.

The utility model is owing to adopt pin to connect between main shaft and internal rotor, not only solved transmission of power, but also overcome main shaft and gear shaft is mayed I ask topic to string, and is simple in structure, reliable, is used to limit the special pressing plate that the main shaft string moves thereby saved.Therefore, the utlity model has reasonable in design, compactness and simple, reliable, volume is little, and cost of production is low, assembles, dismantles characteristics such as all simple, convenient with the supporting use of motor.

Accompanying drawing and description of drawings

Fig. 1 is the utility model structural representation (sectional view);

Fig. 2 is the A-A view.

Among the figure: 1, gear, 2, inserts, 3, main shaft, 4, split washer, 5, the pump housing, 6, external rotor, 7, internal rotor, 8,11: crescent shape oil duct, 9, pin, 10, the pin groove, 12, cover plate, 13, clamping bolt (hole), 14, the construction bolt hole.

Embodiment

Present embodiment is example with 156 h type engine hs with the YB100-HT oil pump: gear 1, the pump housing 5 and external rotor 6, its structure, size are all identical with background technique.The thickness of internal rotor 7, the number of teeth, flute profile, the parameters such as diameter of top circle, root circle and center hole are also all same with background technique, but a pair of pin groove of on the hole wall of this rotor center outer end of hole, setting up 10, axially long 4mm, radially dark 1.2mm, wide 2.8mm; Main shaft 3 nominal diameters and background technique are together, long then be 27mm, column pin hole diameter phi 2.7mm on it, hole centre distance opening cotter way upper wall 18.5mm, still adopt injection moulding to be tightened to one between axle upper end and plate body formula abnormity inlay 2 and the nylon gear, pin 9 long 10.3mm, diameter phi 2.7mm, cover plate 13 is being except that offering the through hole that a nominal diameter is φ 8mm over against pump housing spindle hole and internal rotor central hole, and all the other comprise that the structure of crescent shape oil duct 8,11, size are all identical with background technique.

Claims

1, motorcycle engine oil pump comprises the pump housing, is located at rotor chamber, spindle hole, bolt hole on the pump housing, inside and outside cycloid wheel rotor, and with the cover plate of a pair of crescent shape oil duct, main shaft and gear assembly; It is characterized in that also being provided with a pin on the main shaft of rotor chamber being positioned at, the relevant position on the internal rotor center bore inner wall then is provided with the pin groove, and main shaft and internal rotor are connected into one by this pin and pin groove.

2, by the described motorcycle engine oil pump of claim 1, it is characterized in that described pin groove both can be located at the outer end of internal rotor, also can be located at its inner, and the pin on the main shaft also is located at position correspondingly thereupon.

3,, it is characterized in that in Gear center and main shaft connecting part, also being provided with plate body formula abnormity inserts by the described motorcycle engine oil pump of claim 1.