CN209370812U - A kind of gear type oil pump and rotor-type oil pump being avoided that end wear - Google Patents
A kind of gear type oil pump and rotor-type oil pump being avoided that end wear Download PDFInfo
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- CN209370812U CN209370812U CN201822134404.6U CN201822134404U CN209370812U CN 209370812 U CN209370812 U CN 209370812U CN 201822134404 U CN201822134404 U CN 201822134404U CN 209370812 U CN209370812 U CN 209370812U
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- pump
- hole
- stepped hole
- rotor
- oil pump
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Abstract
The utility model provides a kind of gear type oil pump for being avoided that end wear, including the pump housing, pump cover, driving shaft, driven shaft, driving gear, driven gear, the axis hole of the driving gear and driven gear is stepped hole, and the stepped hole is made of the big hole section of intermediate aperture section and both ends.Conceived based on same utility model, the utility model additionally provides a kind of rotor-type oil pump for being avoided that end wear, including the pump housing, pump cover, armature spindle, internal rotor, outer rotor, the axis hole of the internal rotor is stepped hole, and the stepped hole is made of the big hole section of intermediate aperture section and both ends.Since the axis hole of driving gear, driven gear, internal rotor is stepped hole, in this way in elastic conjunction, the interference deformation of axis hole can be discharged at stepped hole, occur that Light deformation in stepped hole, head face hump and burr is avoided to generate, influencing end clearance leads to machine oil pump seizure；And stepped hole can store certain high pressure oil, can play the role of lubricating end face.
Description
Technical field
The utility model relates to a kind of engine lubrication system component, in particular to a kind of gear type oil pump and rotator type
Lubricating oil pump.
Background technique
In the prior art, the pump gear of gear type oil pump is to be fixed on pump shaft in an interference fit by axis hole
On, the internal rotor of rotor-type oil pump is also to be fixed on pump shaft in an interference fit by axis hole.Regardless of being pump tooth
Wheel or internal rotor, when carrying out elastic conjunction, axis hole inevitably results from interference deformation, and end face is made to generate protrusion
Or burr, thus will affect end clearance leads to machine oil pump seizure.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of gear type oil pumps for being avoided that end wear, and same
When a kind of rotor-type oil pump for being avoided that end wear is provided.
In order to solve the above-mentioned technical problem, the utility model is about the technical solution of gear type oil pump: a kind of to keep away
Exempt from the gear type oil pump of end wear, including the pump housing, pump cover, driving shaft, driven shaft, two pump gears, is set on the pump housing
There is a pump chamber for accommodating pump gear, two pump gears are separately fixed at the driving shaft and driven in an interference fit
On axis, the axis hole of the pump gear is stepped hole, and hole, the stepped hole is by the aperture section of centre and the big hole section group at both ends
At.
Preferably, the length of the big hole section of the stepped hole is greater than 1.5mm.
The utility model is about the technical solution of rotor-type oil pump: a kind of rotator type machine oil being avoided that end wear
Pump, including the pump housing, pump cover, armature spindle, internal rotor, outer rotor, the pump housing are equipped with for accommodating internal rotor and outer rotor
Rotor chamber, the internal rotor are fixed in an interference fit on the armature spindle, and the axis hole of the internal rotor is stepped hole,
The stepped hole is made of the big hole section of intermediate aperture section and both ends.
Preferably, the length of the big hole section of the stepped hole is greater than 1.5mm.
In above-mentioned technical proposal, although different in gear type oil pump and rotor-type oil pump structure, all it is
Conceived based on same utility model, solves identical technical problem, thus acquired technical effect is also identical.
Beneficial effect acquired by the utility model is:
1) since the axis hole of pump gear, internal rotor is stepped hole, in this way in elastic conjunction, the interference deformation of axis hole can
To be discharged at stepped hole, occur that Light deformation in stepped hole, head face hump and burr is avoided to generate, influences between end face
Gap leads to machine oil pump seizure；
2) the big hole section at stepped hole both ends can store certain high pressure oil, plays the lubrication pump housing, pump cover and pump gear or turns
The effect of sub- contact face prevents end wear caused by insufficient lubrication；
3) when the radial space of lubricating oil pump is limited, when body, lid axis hole bearing length are inadequate, can increase on the pump housing, pump cover
Add inside boss structure (the big hole section of the stepped hole of pump gear or rotor just avoids therewith) to reinforce axis hole bearing.
Detailed description of the invention
Fig. 1 is the lubricating oil pump overall structure diagram in the utility model embodiment 1；
Fig. 2 is the pump gear structural schematic diagram in the utility model embodiment 1；
Appended drawing reference are as follows:
1 --- transmission gear 2 --- pump cover 3 --- pump housing
4 --- driving shaft 5 --- pump gear 6 --- driven shafts
7 --- stepped hole.
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.
Embodiment 1
As shown in Figure 1, 2, a kind of gear type oil pump being avoided that end wear, including transmission gear 1, pump cover 2, the pump housing
3,6, two driving shaft 4, driven shaft pump gears 5, the pump housing 3 are equipped with the pump chamber for accommodating pump gear, two pump gears 5
It is separately fixed in an interference fit on the driving shaft 4 and driven shaft 6, the axis hole of the pump gear 5 is ladder
Hole 7, the stepped hole 7 are made of the big hole section of intermediate aperture section and both ends, and as a preferred option, the stepped hole 7 is big
The length of hole section is greater than 1.5mm.
Beneficial effect acquired by the present embodiment is:
1) since the axis hole of pump gear is stepped hole, in this way in elastic conjunction, the interference deformation of axis hole can be in ladder
It is discharged at hole, occurs that Light deformation in stepped hole, avoid head face hump and burr from generating, influencing end clearance leads to machine
Oil pump clamping stagnation；
2) the big hole section at stepped hole both ends can store certain high pressure oil, plays the lubrication pump housing, pump cover and pump gear or turns
The effect of sub- contact face prevents end wear caused by insufficient lubrication；
3) when the radial space of lubricating oil pump is limited, when body, lid axis hole bearing length are inadequate, can increase on the pump housing, pump cover
Add inside boss structure (the big hole section of the stepped hole of pump gear or rotor just avoids therewith) to reinforce axis hole bearing.
Embodiment 2
A kind of rotor-type oil pump being avoided that end wear, including the pump housing, pump cover, armature spindle, internal rotor, outer rotor,
The pump housing is equipped with the rotor chamber for accommodating internal rotor and outer rotor, and the internal rotor is fixed in an interference fit
On the armature spindle, the axis hole of the internal rotor is stepped hole, and the stepped hole is by the aperture section of centre and the big hole section at both ends
Composition, as a preferred option, the length of the big hole section of stepped hole are greater than 1.5mm.
Although the rotor-type oil pump of the present embodiment and the gear type oil pump of embodiment 1 are different in structure,
It is to be all based on same utility model design, solves identical technical problem, thus acquired technical effect is also identical.
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 (4)
1. a kind of gear type oil pump for being avoided that end wear, including the pump housing (3), pump cover (2), driving shaft (4), driven shaft
(6), two pump gears (5), the pump housing (3) are equipped with pump chamber for accommodating pump gear (5), two pump gears (5) with
The mode of interference fit is separately fixed on the driving shaft (4) and driven shaft (6), it is characterised in that: the pump gear (5)
Axis hole is stepped hole (7), and the stepped hole (7) is made of the big hole section of intermediate aperture section and both ends.
2. the gear type oil pump according to claim 1 for being avoided that end wear, it is characterised in that: the stepped hole
(7) length of big hole section is greater than 1.5mm.
3. a kind of rotor-type oil pump for being avoided that end wear, including the pump housing, pump cover, armature spindle, internal rotor, outer rotor, institute
The pump housing is stated equipped with the rotor chamber for accommodating internal rotor and outer rotor, the internal rotor is fixed on institute in an interference fit
It states on armature spindle, it is characterised in that: the axis hole of the internal rotor is stepped hole, and the stepped hole is by intermediate aperture section and both ends
Big hole section composition.
4. the rotor-type oil pump according to claim 3 for being avoided that end wear, it is characterised in that: the stepped hole is big
The length of hole section is greater than 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822134404.6U CN209370812U (en) | 2018-12-18 | 2018-12-18 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822134404.6U CN209370812U (en) | 2018-12-18 | 2018-12-18 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209370812U true CN209370812U (en) | 2019-09-10 |
Family
ID=67829585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822134404.6U Active CN209370812U (en) | 2018-12-18 | 2018-12-18 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209370812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373166A (en) * | 2018-12-18 | 2019-02-22 | 湖南机油泵股份有限公司 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
-
2018
- 2018-12-18 CN CN201822134404.6U patent/CN209370812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373166A (en) * | 2018-12-18 | 2019-02-22 | 湖南机油泵股份有限公司 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
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| GR01 | Patent grant |