CN209705688U - A kind of rotor-type oil pump directly driven by engine crankshaft - Google Patents
A kind of rotor-type oil pump directly driven by engine crankshaft Download PDFInfo
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- CN209705688U CN209705688U CN201920458388.8U CN201920458388U CN209705688U CN 209705688 U CN209705688 U CN 209705688U CN 201920458388 U CN201920458388 U CN 201920458388U CN 209705688 U CN209705688 U CN 209705688U
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- rotor
- pump housing
- pump
- chamber
- engine crankshaft
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Abstract
The utility model provides a kind of rotor-type oil pump directly driven by engine crankshaft, including the pump housing, pump cover, outer rotor, internal rotor；The pump housing includes axis hole, mounting surface and the back side, and the mounting surface of the pump housing is equipped with rotor chamber and oil outlet, and the bottom of rotor chamber is equipped with low pressure chamber and high pressure chest；A valve opening is additionally provided on the pump housing, one end of valve opening is communicated with high pressure chest, and valve opening is sequentially installed with plunger, spring and blocking from inside to outside, and the hole wall of valve opening is equipped with a drain tap, which is located at the mounting surface of the pump housing；The side of the pump housing is equipped with oil inlet, and oil inlet is communicated with low pressure chamber, and oil outlet is communicated with high pressure chest；Outer rotor and internal rotor are mounted in the rotor chamber of the pump housing, and the side wall of rotor chamber is equipped with several grooves；The mounting surface of the pump housing is equipped with pump cover mounting groove, and pump cover is mounted in pump cover mounting groove by screw.This structure can reduce the friction of the outer peripheral surface of outer rotor and the side wall of rotor chamber, to save power consumption.
Description
Technical field
The utility model relates to engine lubrication system, a kind of specifically rotor-type oil pump.
Background technique
Rotor-type oil pump is usually made of the pump housing, internal rotor, outer rotor, armature spindle and pump cover etc..The pump housing, which is equipped with, to be turned
Sub- chamber, internal rotor and outer rotor are located in rotor chamber, and internal rotor is fixedly mounted on armature spindle, direct or indirect by crankshaft toothed wheel
The eccentricity at driving, internal rotor and outer rotor center is e, and internal rotor drives outer rotor to rotate in the same direction together.
The internal rotor of general rotor-type oil pump has 4 or 4 or more double wedges, the recessed gear ratio internal rotor of outer rotor
As soon as convex portion number more, such inner and outer Rotator can be carried out nonsynchronous rotation in the same direction, the outline shape curve of rotor is time pendulum
Line.
It is total on the tooth form profile of each tooth of inner and outer Rotator when rotor tooth form tooth Profile Design must make rotor go to any angle
Can mutually be coordinated point contact.Multiple working chambers are formed between inner and outer Rotator in this way, with the rotation of rotor, the volume of multiple working chambers
It is continually changing.In the side cavity of oil input channel, since rotor is disengaged, volume is gradually increased, and generates vacuum, machine oil quilt
Sucking, rotor continue to rotate, and machine oil is brought to the side of oil road, and at this moment, rotor just enters engagement, make this cavity volume
Reduce, oil pressure increases, and machine oil is squeezed out between cog and gone out through oil road force feed.In this way, machine oil is just with the continuous rotation of rotor
It is constantly inhaled into and extrudes.
Rotor-type oil pump is compact-sized, and outer dimension is small, light-weight, and oil suction vacuum degree is larger, and pump oil amount is big, and fuel feeding is equal
Even property is good, at low cost, is widely used on medium and small engine.The disadvantage is that the resistance to sliding ratio of inner and outer rotors mating surface
Gear pump is big, therefore power consumption is larger.
In the prior art, the structure of outer rotor is generally annular, including inner peripheral surface and outer peripheral surface, wherein sets on inner peripheral surface
There are several concave tooth, outer peripheral surface is circle, and at work, outer rotor rotates together under the drive of internal rotor, outside outer rotor
Circumferential surface will do it with the side wall of rotor chamber and contact friction, for a long time, the two will necessarily be allowed to generate corresponding abrasion.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of rotator type machine oil directly driven by engine crankshaft
Pump, it is compact-sized, and can be reduced the friction of outer rotor, save power consumption.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: a kind of direct by engine crankshaft
The rotor-type oil pump of driving, including the pump housing, pump cover, outer rotor, internal rotor；The pump housing includes axis hole, mounting surface and the back side,
The mounting surface of the pump housing is equipped with the rotor chamber and oil outlet of indent, and the bottom of the rotor chamber is equipped with not connected low pressure
Chamber and high pressure chest；A valve opening is additionally provided on the pump housing, one end of the valve opening is communicated with the high pressure chest, the valve opening from
It is sequentially installed with plunger, spring and blocking from inside to outside, the hole wall of the valve opening is equipped with a drain tap, which is located at institute
State the mounting surface of the pump housing；The side of the pump housing is equipped with oil inlet, and the oil inlet is communicated with low pressure chamber, the oil outlet and height
Pressure chamber communicates；The outer rotor and internal rotor are mounted in the rotor chamber of the pump housing, and the side wall of the rotor chamber is equipped with several
Groove；The mounting surface of the pump housing is equipped with pump cover mounting groove, and the pump cover is mounted in pump cover mounting groove by screw.
It is bonded in use, entire lubricating oil pump is carried out installation with engine cylinder body by pump housing mounting surface, engine crankshaft
Sequentially pass through pump cover axis hole, internal rotor axis hole, pump housing axis hole, driving internal rotor rotation.If the side wall due to rotor chamber is equipped with
Dry groove, can thus reduce the friction of the outer peripheral surface of outer rotor and the side wall of rotor chamber, to save power consumption.
Further, the groove on the rotor chamber side wall extends downward into the bottom surface portions of rotor chamber, entire groove
Section is L-shaped.The friction of outer rotor end face Yu rotor chamber bottom surface can be reduced in this way.
Further, the pump cover set on one side there are two oil storage tank towards rotor chamber.Outer rotor end can be reduced in this way
The friction in face and pump cover.
Further, a reinforcing rib is equipped in the middle part of the drain tap of the valve opening.Since the draining mode of drain tap is single
Side draining, then flows back to oil sump, and unilateral draining mode force unbalance, can thus cause plunger deflection, keep plunger inclined
Mill even clamping stagnation can reduce the generation of plunger eccentric wear and catching phenomenon by increasing reinforcing rib.
Further, the axis hole of the pump housing is stepped hole, wherein being used to install oil sealing, axis close to the part at the pump housing back side
An inclined oil hole of air is drilled on the hole wall in hole.The inclined oil hole of air is used to the pressure oil between oil sealing and rotor being drained to oil sump.
Further, mounting-positioning holes there are two being set on the pump housing.
Preferably, the axis hole of the internal rotor is equipped with internal spline, for matching with engine crankshaft spline.
Detailed description of the invention
Fig. 1 is the lubricating oil pump overall structure diagram in the utility model embodiment；
Fig. 2 is the structural blast schematic diagram of Fig. 1；
Fig. 3 is the pump body structure schematic diagram in the utility model embodiment；
Fig. 4 is the pump cover structure schematic diagram in the utility model embodiment；
Fig. 5 is the AA line cross-sectional view of Fig. 1；
Appended drawing reference are as follows:
1 --- the pump housing 2 --- pump cover 3 --- outer rotor
4 --- internal rotor 5 --- plunger 6 --- springs
7 --- 11 --- axis hole 12 --- oil outlets of blocking
13 --- low pressure chamber 14 --- high pressure chest 15 --- drain taps
16 --- oil inlet 17 --- location hole 18 --- inclined oil hole of air
21 --- oil storage tank.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or
Two or more, unless otherwise specifically defined.In the description of the present invention, it should be noted that unless otherwise rule
Fixed and restriction, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection,
It can be the connection inside two elements, can be directly connected, it can also indirectly connected through an intermediary, for this field
Those of ordinary skill for, can understand the concrete meaning of the term as the case may be.
As shown in Fig. 1 to 5, the preferred embodiment of the utility model is: a kind of rotor directly driven by engine crankshaft
Formula lubricating oil pump, including the pump housing 1, pump cover 2, outer rotor 3, internal rotor 4；The pump housing 1 includes axis hole 11, mounting surface and the back side, institute
It states and is set on the pump housing there are two mounting-positioning holes 17, the mounting surface of the pump housing 1 is equipped with the rotor chamber and oil outlet 12 of indent, institute
The bottom for stating rotor chamber is equipped with not connected low pressure chamber 13 and high pressure chest 14；A valve opening is additionally provided on the pump housing 1, it is described
One end of valve opening is communicated with the high pressure chest 14, and the valve opening is sequentially installed with plunger 5, spring 6 and blocking 7, institute from inside to outside
The hole wall for stating valve opening is equipped with a drain tap 15, which is located at the mounting surface of the pump housing 1,15 middle part of drain tap
Equipped with a reinforcing rib；The side into the pump housing 1 offers oil inlet 16, and the oil inlet 16 is communicated with low pressure chamber 13, institute
Oil outlet 12 is stated to communicate with high pressure chest 14；The outer rotor 3 and internal rotor 4 are mounted in the rotor chamber of the pump housing 1, the internal rotor
Axis hole be equipped with internal spline, for being matched with engine crankshaft spline；The side wall of the rotor chamber is equipped with several grooves
(not shown), the groove extend downward into the bottom surface portions of rotor chamber, keep the section of entire groove L-shaped；The pump housing 1
Mounting surface be equipped with pump cover mounting groove, the pump cover 2 is mounted in pump cover mounting groove by screw, the pump cover 2 towards turn
Sub- chamber is set on one side there are two oil storage tank 21.
As shown in figure 5, the axis hole 11 of the pump housing 1 is stepped hole, wherein being used to install oil close to the part at 1 back side of the pump housing
It seals, an inclined oil hole of air 18 is drilled on the hole wall of axis hole 11, for the pressure oil between oil sealing and rotor to be drained to oil sump.
It is bonded in use, entire lubricating oil pump is carried out installation with engine cylinder body by 1 mounting surface of the pump housing, engine crankshaft
1 axis hole of 2 axis hole of pump cover, 4 axis hole of internal rotor and the pump housing is sequentially passed through, driving internal rotor 4 rotates.Due to being set on the side wall of rotor chamber
There are several grooves, can thus reduce the friction of the outer peripheral surface of outer rotor 3 and the side wall of rotor chamber, to save power consumption.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it
Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the interior of the utility model
Hold.
Claims (7)
1. a kind of rotor-type oil pump directly driven by engine crankshaft, including it is the pump housing (1), pump cover (2), outer rotor (3), interior
Rotor (4), it is characterised in that: the pump housing (1) includes axis hole (11), mounting surface and the back side, on the mounting surface of the pump housing (1)
The bottom of rotor chamber and oil outlet (12) equipped with indent, the rotor chamber is equipped with not connected low pressure chamber (13) and high pressure chest
(14)；It is additionally provided with a valve opening on the pump housing (1), one end of the valve opening is communicated with the high pressure chest (14), the valve opening
It is sequentially installed with plunger (5), spring (6) and blocking (7) from inside to outside, the hole wall of the valve opening is equipped with a drain tap
(15), which is located at the mounting surface of the pump housing；The side of the pump housing (1) be equipped with oil inlet (16), it is described into
Hydraulic fluid port (16) is communicated with low pressure chamber (13), and the oil outlet (12) communicates with high pressure chest (14)；The outer rotor (3) and internal rotor
(4) it is mounted in the rotor chamber of the pump housing (1), the side wall of the rotor chamber is equipped with several grooves；The installation of the pump housing (1)
Face is equipped with pump cover mounting groove, and the pump cover (2) is mounted in pump cover mounting groove by screw.
2. the rotor-type oil pump according to claim 1 directly driven by engine crankshaft, it is characterised in that: described turn
Groove on sub- chamber side wall extends downward into the bottom surface portions of rotor chamber, and the section of entire groove is L-shaped.
3. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
State pump cover (2) set on one side there are two oil storage tank (21) towards rotor chamber.
4. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
It states and is equipped with a reinforcing rib in the middle part of the drain tap (15) of valve opening.
5. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
The axis hole for stating the pump housing (1) is stepped hole, wherein being used to install oil sealing close to the part at the pump housing (1) back side, is bored on the hole wall of axis hole
There is an inclined oil hole of air (18).
6. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
It states there are two being set on the pump housing (1) mounting-positioning holes (17).
7. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
The axis hole for stating internal rotor (4) is equipped with internal spline, for matching with engine crankshaft spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920458388.8U CN209705688U (en) | 2019-04-08 | 2019-04-08 | A kind of rotor-type oil pump directly driven by engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920458388.8U CN209705688U (en) | 2019-04-08 | 2019-04-08 | A kind of rotor-type oil pump directly driven by engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705688U true CN209705688U (en) | 2019-11-29 |
Family
ID=68648972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920458388.8U Active CN209705688U (en) | 2019-04-08 | 2019-04-08 | A kind of rotor-type oil pump directly driven by engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209705688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812684A (en) * | 2019-04-08 | 2019-05-28 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump directly driven by engine crankshaft |
-
2019
- 2019-04-08 CN CN201920458388.8U patent/CN209705688U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812684A (en) * | 2019-04-08 | 2019-05-28 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump directly driven by engine crankshaft |
| CN109812684B (en) * | 2019-04-08 | 2024-02-02 | 湖南机油泵股份有限公司 | Rotor type oil pump directly driven by engine crankshaft |
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| GR01 | Patent grant |