CN203810005U - Motorcycle oil pump - Google Patents
Motorcycle oil pump Download PDFInfo
- Publication number
- CN203810005U CN203810005U CN201420216752.7U CN201420216752U CN203810005U CN 203810005 U CN203810005 U CN 203810005U CN 201420216752 U CN201420216752 U CN 201420216752U CN 203810005 U CN203810005 U CN 203810005U
- Authority
- CN
- China
- Prior art keywords
- arc surface
- transmission shaft
- pump
- arc
- oil pump
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a motorcycle oil pump. The motorcycle oil pump comprises a transmission shaft. The transmission shaft is sequentially provided with a gear, a pump body and a pump cover in a sleeved mode, and the gear is fixedly installed on the transmission shaft. An outer rotor and an inner rotor connected to the outer rotor in a meshed mode are arranged in the pump body, and the inner rotor is fixedly installed on the transmission shaft. The pump cover is fixedly installed on the end surface of the pump body. The end surface, corresponding to the pump cover, of the pump body is provided with a plurality of first fixing holes. The pump cover is provided with second fixing holes corresponding to the first fixing holes. A first arc surface, a second arc surface and a third arc surface are arranged on the periphery of the pump body in the circumferential direction, an arc surface body of the first arc surface, an arc surface body of the second arc surface and an arc surface body of the third arc surface are located on the same periphery, and the center of the periphery is located in the central axis of the transmission shaft. The motorcycle oil pump is simple and reasonable in structure, high in concentricity, convenient to process, low in cost, convenient to install and locate and high in assembly efficiency.
Description
Technical field
The utility model relates to oil pump technical field, particularly a kind of scooter oil pump for beam bending bicycle.
Background technique
Oil pump, as indispensable important composition structure in engine lubrication system, is known by masses, and its effect is that machine oil is brought up to after certain pressure, is sent to forcibly on the moving surface of the each part of motor, plays effect lubricated and cooling.In the market for the scooter oil pump of beam bending bicycle, as depicted in figs. 1 and 2, generally include transmission shaft 1 ', on described transmission shaft 1 ', be arranged with successively gear 2 ', the pump housing 3 ' and pump cover 4 ', gear 2 ' is fixedly mounted on transmission shaft 1 ', the pump housing 3 ' is in transmission connection by rotor 13 and transmission shaft 1 ', and pump cover 4 ' is fixedly mounted on the upper of the pump housing 3 '.Can accurately install in order to ensure oil pump and motor, said engine oil pump generally adopts " two main location of locating stud, transmission shaft auxiliary positioning " mounting type, its embodiment is to offer respectively two positioning holes 14 at the opposite position of the pump housing 3 ' and pump cover 4 ', when installation, first calibrate the pump housing 3 ' and the upper corresponding positioning hole 14 of pump cover 4 ', and at the interior locating stud 15 that is pressed into respectively of two positioning holes 14, then under the mating reaction of two locating studs 15 and transmission shaft 1 ', two locating studs 15 are matched with the positioning hole arranging on motor, finally by mounting screw, said engine oil pump is connected with motor, thereby complete the installation that coordinates of oil pump and motor.
But, adopt above-mentioned installation and positioning structure also Shortcomings part in the time of practical set: first: owing to all needing to offer positioning hole on the pump housing 3 ' and pump cover 4 ', cause adding required precision in man-hour higher, easily produce machining error, concentricity is lower, processes comparatively inconvenience and cost higher; The second, during due to installation, need in positioning hole 14, be pressed into locating stud 15, easily there is the phenomenon of inclination in locating stud 15, cause assembling difficulty larger in the time being pressed into; The 3rd, during due to assembling, need locating stud 15 to coordinate location with transmission shaft 1 ', two positioning hole 14 centers on same parts need to be arranged on the same circumference centered by the axis of transmission shaft 1 ', in the time that micro-off normal appears in the axis of positioning hole 14 center and transmission shaft 1 ', can cause transmission shaft 1 ' to insert in motor, or occur the phenomenon that serious clamping stagnation does not even turn after transmission shaft 1 ' insertion motor; The 4th, because positioning hole 14 quantity are more, cause installing comparatively inconvenience of location, efficiency of assembling reduces.
Model utility content
The purpose of this utility model is for the defect of prior art and deficiency, provide a kind of simple and reasonable, processing concentricity is higher, easy to process and cost is lower, the machine oil pump for motor that location is convenient, efficiency of assembling is higher is installed.
For achieving the above object, the utility model is by the following technical solutions:
Machine oil pump for motor described in the utility model, comprise transmission shaft, on described transmission shaft, be arranged with successively gear, the pump housing and pump cover, gear is fixedly mounted on transmission shaft, in the pump housing, be provided with the external rotor and the internal rotor that are connected with a joggle, described internal rotor is fixedly mounted on transmission shaft, pump cover is fixedly mounted on the end face of the pump housing, on the described pump housing, be provided with some the first fixed holes corresponding to the end face of pump cover, pump cover is provided with second fixed hole corresponding with the first fixed hole, described pump housing periphery is along being circumferentially with the first arc surface, the second arc surface and three-arc face, described the first arc surface, the cambered surface of the second arc surface and three-arc face is all positioned on same circumference, and on the central axis that is centered close to described transmission shaft of this circumference.
Further, the radian of described the first arc surface, the second arc surface and three-arc face successively decreases successively.
Further, the radian of described the second arc surface is 2/3rds of the first arc surface radian, and the radian of described three-arc face is 2/3rds of the second arc surface radian.
Further, described gear is fixedly mounted on transmission shaft by bearing pin, is arranged with successively split washer and flat gasket between the end of described transmission shaft and gear.
Further, described pump cover is fixedly mounted on the described pump housing by crossed pan head screw.
The beneficial effects of the utility model are: by being circumferentially with the first arc surface, the second arc surface and three-arc face on pump housing periphery edge, than prior art, the utility model only need to arrange above-mentioned three arc surfaces man-hour adding on the pump housing, structure is comparatively simple, adding man-hour only needs to consider the position of three arc surfaces, and required precision is lower, easy to process, concentricity is higher, effectively reduces processing cost; The cambered surface of described the first arc surface, the second arc surface and three-arc face is all positioned on same circumference, and on the central axis that is centered close to described transmission shaft of this circumference, when assembling, match with the cabinet of motor by above-mentioned three arc surfaces, locate simple and conveniently, effectively improved efficiency of assembling.
Brief description of the drawings
Fig. 1 is a kind of overall structure schematic diagram of existing machine oil pump for motor;
Fig. 2 is the pump cover plane structure schematic diagram of Fig. 1;
Fig. 3 is overall structure schematic diagram of the present utility model;
Fig. 4 is plan view structural representation of the present utility model.
In figure:
1,1 ', transmission shaft; 2,2 ', gear; 3,3 ', the pump housing; 4,4 ', pump cover; 5, external rotor; 6, internal rotor; 7, the first fixed hole; 8, the second fixed hole; 31, the first arc surface; 32, the second arc surface; 33, three-arc face; 9, bearing pin; 10, split washer; 11, flat gasket; 12, crossed pan head screw; 13, rotor; 14, positioning hole; 15, locating stud.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Machine oil pump for motor as shown in Figure 3 and Figure 4, comprise transmission shaft 1, on described transmission shaft 1, string is provided with gear 2 successively, the pump housing 3 and pump cover 4, transmission shaft 1 is installed in motor, gear 2 is fixedly mounted on transmission shaft 1, in the pump housing 3, be provided with the external rotor 5 and the internal rotor 6 that are connected with a joggle, described internal rotor 6 is fixedly mounted on transmission shaft 1, pump cover 4 is fixedly mounted on the pump housing 3, on the described pump housing 3, be provided with some the first fixed holes 7 corresponding to the end face of pump cover 4, pump cover 4 is provided with second fixed hole 8 corresponding with the first fixed hole 7, the described pump housing 3 peripheries are along being circumferentially with the first arc surface 31, the second arc surface 32 and three-arc face 33, described the first arc surface 31, the cambered surface of the second arc surface 32 and three-arc face 33 is all positioned on same circumference, and on the central axis that is centered close to described transmission shaft 1 of this circumference.
When the utility model coordinates installation with motor, first transmission shaft 1 is inserted in motor, and aim at the mounting hole on engine case by the first arc surface 31, the second arc surface 32 and three-arc face 33, the cambered surface of above-mentioned three arc surfaces and the mounting hole inwall of engine case are fully contacted, final cabinet matches with the second fixed hole 8, the first fixed hole 7 by mounting screw, completes motor and assembling of the present utility model.
Adopt above-mentioned three arc surfaces to position installation, because cambered surface is smooth structure, so in assembling without with the mounting hole accurate calibration (only needing to aim at approximate location) of cabinet, after completing roughly calibration, successively when squeezing into mounting screw in the second fixed hole 8, the first fixed hole 7, arc surface can drive the utility model self-return under the effect of mounting screw, thereby can reach accurate location.
The utility model only needs to consider the concentricity of above-mentioned three arc surfaces adding man-hour, processes comparatively simply, add man-hour concentricity higher, and processing cost is lower; Adopt three arc surfaces to position, when assembling, location is simple, quick, has improved efficiency of assembling.
Due to the finite volume of the pump housing 3, when above-mentioned three arc surfaces of processing of the present utility model, be subject to the impact in space, for easy to process, and can rationally utilize space, the radian of described the first arc surface 31, the second arc surface 32 and three-arc face 33 successively decreases successively, particularly, the radian of described the second arc surface 32 is 2/3rds of first arc surface 31 radians, and the radian of described three-arc face 33 is 2/3rds of second arc surface 32 radians.
Described gear 2 is fixedly mounted on transmission shaft 1 by bearing pin 9, is arranged with successively split washer 10 and flat gasket 11 between the end of described transmission shaft 1 and gear 2, adopts said structure, makes gear 2 and transmission shaft 9 that fixed effect is installed better, and efficiency of assembling is higher.Described pump cover 4 is fixedly mounted on the described pump housing 3 by crossed pan head screw 12, easy for installation.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (5)
1. a machine oil pump for motor, comprise transmission shaft (1), on described transmission shaft (1), string is provided with gear (2) successively, the pump housing (3) and pump cover (4), gear (2) is fixedly mounted on transmission shaft (1), in the pump housing (3), be provided with the external rotor (5) and the internal rotor (6) that are connected with a joggle, described internal rotor (6) is fixedly mounted on transmission shaft (1), pump cover (4) is fixedly mounted on the pump housing (3), the described pump housing (3) is upper is provided with some the first fixed holes (7) corresponding to the end face of pump cover (4), pump cover (4) is provided with second fixed hole (8) corresponding with the first fixed hole (7), it is characterized in that: the described pump housing (3) periphery is along being circumferentially with the first arc surface (31), the second arc surface (32) and three-arc face (33), described the first arc surface (31), the cambered surface of the second arc surface (32) and three-arc face (33) is all positioned on same circumference, and on the central axis that is centered close to described transmission shaft (1) of this circumference.
2. machine oil pump for motor according to claim 1, is characterized in that: the radian of described the first arc surface (31), the second arc surface (32) and three-arc face (33) successively decreases successively.
3. machine oil pump for motor according to claim 2, it is characterized in that: the radian of described the second arc surface (32) is 2/3rds of the first arc surface (31) radian, and the radian of described three-arc face (33) is 2/3rds of the second arc surface (32) radian.
4. machine oil pump for motor according to claim 1, it is characterized in that: it is upper that described gear (2) is fixedly mounted on transmission shaft (1) by bearing pin (9), is arranged with successively split washer (10) and flat gasket (11) between the end of described transmission shaft (1) and gear (2).
5. machine oil pump for motor according to claim 1, is characterized in that: described pump cover (4) is fixedly mounted on the described pump housing (3) by crossed pan head screw (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216752.7U CN203810005U (en) | 2014-04-29 | 2014-04-29 | Motorcycle oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216752.7U CN203810005U (en) | 2014-04-29 | 2014-04-29 | Motorcycle oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810005U true CN203810005U (en) | 2014-09-03 |
Family
ID=51448753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420216752.7U Expired - Fee Related CN203810005U (en) | 2014-04-29 | 2014-04-29 | Motorcycle oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339595A (en) * | 2017-07-25 | 2017-11-10 | 力帆实业(集团)股份有限公司 | Motorcycle engine oil pump assembly |
| CN107725208A (en) * | 2017-09-22 | 2018-02-23 | 力帆实业(集团)股份有限公司 | Cooling engine for motor cycle water |
-
2014
- 2014-04-29 CN CN201420216752.7U patent/CN203810005U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339595A (en) * | 2017-07-25 | 2017-11-10 | 力帆实业(集团)股份有限公司 | Motorcycle engine oil pump assembly |
| CN107725208A (en) * | 2017-09-22 | 2018-02-23 | 力帆实业(集团)股份有限公司 | Cooling engine for motor cycle water |
| CN107725208B (en) * | 2017-09-22 | 2024-02-27 | 力帆实业(集团)股份有限公司 | Water-cooled engine for motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160429 |