CN208719807U - A kind of rotor-type oil pump that can balance end face oil pressure - Google Patents
A kind of rotor-type oil pump that can balance end face oil pressure Download PDFInfo
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- CN208719807U CN208719807U CN201821321533.XU CN201821321533U CN208719807U CN 208719807 U CN208719807 U CN 208719807U CN 201821321533 U CN201821321533 U CN 201821321533U CN 208719807 U CN208719807 U CN 208719807U
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- rotor
- internal rotor
- axis hole
- pump
- face
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Abstract
The utility model provides a kind of rotor-type oil pump that can balance end face oil pressure, including the pump housing, pump cover, armature spindle, internal rotor and outer rotor, the internal rotor is fixed on armature spindle, one end of the armature spindle is mounted in the axis hole of the pump housing, the other end is mounted in the axis hole of pump cover, and the axis hole wall of the internal rotor is equipped with the axial groove isometric with axis hole.The beneficial effects of the utility model are: the interference deformation of axis hole can be discharged in groove when 1, elastic conjunction, occur that Light deformation in groove, rather than accumulating to end face leads to head face hump, influencing end clearance causes gapless to be worn；2, when internal rotor is by axial force or is close to side under the action of oil pressure, the end face that the pump housing or pump cover are contacted with internal rotor can be lubricated by the high pressure oil that the groove of internal rotor conveys, prevent end wear caused by insufficient lubrication.
Description
Technical field
The utility model relates to a kind of engine lubrication system component, in particular to a kind of rotor-type oil pump.
Background technique
Rotor-type oil pump is made of the pump housing, internal rotor, outer rotor, armature spindle and pump cover etc..Internal rotor is fixedly mounted on
It on armature spindle, is directly or indirectly driven by crankshaft toothed wheel, the eccentricity at internal rotor and outer rotor center is e, and internal rotor drives outer
Rotor rotates 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
Convex portion number is one more, the nonsynchronous rotation in the same direction of such inner and outer Rotator, and the outline shape curve of rotor is trochoid.
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.4 working chambers are formed in this way between inner and outer Rotator, with the rotation of rotor, the volume of this 4 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.
But in the prior art, internal rotor usually assembles on armature spindle in an interference fit, is easy for making so interior
Rotor dilatancy outward；Also, it in internal rotor operating, is acted on by helical teeth axial force or internal oil pressure power, is easy to be close to one
Side causes internal rotor, because oil-free lubrication or lubricating oil are inadequate, to cause to wear with the supporting surface of the pump housing or pump cover.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of rotor-type oil pumps that can balance end face oil pressure.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: a kind of end face oil pressure of capable of balancing
Rotor-type oil pump, including the pump housing, pump cover, armature spindle, internal rotor and outer rotor, the internal rotor are fixed on armature spindle, institute
The one end for stating armature spindle is mounted in the axis hole of the pump housing, and the other end is mounted in the axis hole of pump cover, the axis hole wall of the internal rotor
It is equipped with the axial groove isometric with axis hole.
Preferably, the cross sectional shape of the groove is semilune.
Preferably, the quantity of the groove is four.
The beneficial effects of the utility model are:
1, when elastic conjunction, the interference deformation of axis hole can be discharged in groove, occur that Light deformation in groove,
Rather than accumulation leads to head face hump to end face, influencing end clearance causes gapless to be worn；
2, when internal rotor is by axial force or is close to side under the action of oil pressure, pass through the groove of internal rotor
The high pressure oil of conveying can lubricate the end face that the pump housing or pump cover are contacted with internal rotor, prevent end wear caused by insufficient lubrication.
Detailed description of the invention
Fig. 1 is the rotor-type oil pump configuration schematic diagram in the utility model embodiment；
Fig. 2 is the inner rotor core schematic diagram in the utility model embodiment；
Appended drawing reference are as follows:
1 --- the pump housing 2 --- pump cover 3 --- armature spindle
4 --- internal rotor 5 --- outer rotor 6 --- grooves.
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 " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.In the utility model
Description in, the meaning of " plurality " is two or more, unless otherwise specifically defined.In retouching for the utility model
In stating, it should be noted that unless otherwise specified and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, example
Such as, mechanical connection or electrical connection be can be, the connection being also possible to inside two elements can be directly connected, and can also lead to
It crosses intermediary to be indirectly connected, for the ordinary skill in the art, can understand the term as the case may be
Concrete meaning.
As shown in Figure 1, the preferred embodiment of the utility model is: a kind of rotor-type oil pump that can balance end face oil pressure,
Including the pump housing 1, pump cover 2, armature spindle 3, internal rotor 4 and outer rotor 5, the internal rotor is fixed on armature spindle 3, the armature spindle
3 one end is mounted in the axis hole of the pump housing 1, and the other end is mounted in the axis hole of pump cover 2, is set on the axis hole wall of the internal rotor 4
There are four the axial half moon grooves 6 isometric with axis hole.
By adopting the above technical scheme, can obtain it is following the utility model has the advantages that
1, when elastic conjunction, the interference deformation of axis hole can be discharged in groove, occur that Light deformation in groove,
Rather than accumulation leads to head face hump to end face, influencing end clearance causes gapless to be worn；
2, when internal rotor is by axial force or is close to side under the action of oil pressure, pass through the groove of internal rotor
The high pressure oil of conveying can lubricate the end face that the pump housing or pump cover are contacted with internal rotor, prevent end wear caused by insufficient lubrication.
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 (3)
1. a kind of rotor-type oil pump that can balance end face oil pressure, including the pump housing (1), pump cover (2), armature spindle (3), internal rotor
(4) it is fixed on armature spindle (3) with outer rotor (5), the internal rotor, one end of the armature spindle (3) is mounted on the pump housing (1)
In axis hole, the other end is mounted in the axis hole of pump cover (2), it is characterised in that: the axis hole wall of the internal rotor (4) is equipped with axial
The groove (6) isometric with axis hole.
2. the rotor-type oil pump according to claim 1 that end face oil pressure can be balanced, it is characterised in that: the groove (6)
Cross sectional shape be semilune.
3. the rotor-type oil pump according to claim 1 or 2 that end face oil pressure can be balanced, it is characterised in that: the groove
(6) quantity is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821321533.XU CN208719807U (en) | 2018-08-16 | 2018-08-16 | A kind of rotor-type oil pump that can balance end face oil pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821321533.XU CN208719807U (en) | 2018-08-16 | 2018-08-16 | A kind of rotor-type oil pump that can balance end face oil pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208719807U true CN208719807U (en) | 2019-04-09 |
Family
ID=65978053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821321533.XU Active CN208719807U (en) | 2018-08-16 | 2018-08-16 | A kind of rotor-type oil pump that can balance end face oil pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208719807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662423A (en) * | 2018-08-16 | 2018-10-16 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump that can balance end face oil pressure |
-
2018
- 2018-08-16 CN CN201821321533.XU patent/CN208719807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662423A (en) * | 2018-08-16 | 2018-10-16 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump that can balance end face oil pressure |
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