CN204153439U - A kind of automobile engine oil pump pump cover - Google Patents
A kind of automobile engine oil pump pump cover Download PDFInfo
- Publication number
- CN204153439U CN204153439U CN201420508928.6U CN201420508928U CN204153439U CN 204153439 U CN204153439 U CN 204153439U CN 201420508928 U CN201420508928 U CN 201420508928U CN 204153439 U CN204153439 U CN 204153439U
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- CN
- China
- Prior art keywords
- pump cover
- pump
- cover body
- region
- automobile engine
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- 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
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
A kind of automobile engine oil pump pump cover disclosed in the utility model, comprise pump cover body, described pump cover body has a round rotor region on the end face of the pump housing, the center in described round rotor region offers a rotor shaft hatch, the edge external circumferential that described pump cover body is positioned at described round rotor region is arranged at intervals with some mounting holes, and described pump cover body is at least provided with a hardness determination region on the end face of the pump housing.The beneficial effects of the utility model are: mounting hole is distributed on outside the edge in round rotor region, and make the sealing effect between pump cover body and the pump housing better, stress equalization, connects more firm.Pump cover body is provided with hardness determination region, improves detection efficiency, detect convenient.
Description
Technical field
The utility model relates to automobile engine oil pump component technical field, particularly relates to a kind of automobile engine oil pump pump cover.
Background technique
The effect of automobile engine oil pump machine oil is delivered to motor respectively to rub position, and machine oil is circulated, to ensure that motor obtains good lubrication in lubrication road.Oil pump mostly is gear pump, and it is made up of gear pump body etc.When the engine operates, camshaft drives the driving gear of the pump housing to rotate.Gear whipping machine oil flow to oil outlet along pump housing inwall from filler opening, forms low pressure, and produce suction, namely the machine oil in sump be inhaled into filler opening.And the machine oil at oil outlet place is cumulative, thus pressure increases, and machine oil is just forced into each friction portion, realizes pressure lubrication.
Pump cover is one of important spare part of automobile engine oil pump, and the main effect of pump cover is sealed by the pump housing of oil pump, plays the effect of isolation.The hardness of pump cover is one of important indicator weighing pump cover quality, and when pump cover produces wearing and tearing because hardness is not enough, the sealing of pump cover can be affected, and even there will be the phenomenon of leakage of oil, and therefore, pump cover all needs to survey sample its hardness before dispatching from the factory.
Model utility content
The purpose of this utility model is to provide a kind of and is convenient for measuring its hardness and hardness is high, the automobile engine oil pump pump cover of good seal performance.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of automobile engine oil pump pump cover, comprise pump cover body, described pump cover body has a round rotor region on the end face of the pump housing, the center in described round rotor region offers a rotor shaft hatch, the edge external circumferential that described pump cover body is positioned at described round rotor region is arranged at intervals with some mounting holes, and described pump cover body is at least provided with a hardness determination region on the end face of the pump housing.
In a preferred embodiment of the present utility model, the Surface coating of described pump cover body has the hardened layer formed once carbonitriding process.
In a preferred embodiment of the present utility model, the thickness of described hardened layer is 0.25 ~ 0.4mm, and hardness is 700 ~ 800HV0.2.
In a preferred embodiment of the present utility model, described hardness determination region is circular, quantity is two, and one of them hardness determination region is positioned at outside described round rotor region, and another hardness determination region has at least a part to be positioned at described round rotor region.
In a preferred embodiment of the present utility model, described mounting hole is made up of cylindrical part and frustoconic shape part.
In a preferred embodiment of the present utility model, described rotor shaft hatch is step-like axis hole.
Owing to have employed technological scheme as above, the beneficial effects of the utility model are: mounting hole is distributed on outside the edge in round rotor region, and make the sealing effect between pump cover body and the pump housing better, stress equalization, connects more firm.Pump cover body is provided with hardness determination region, improves detection efficiency, detect convenient.The surface coated hardened layer of pump cover body, improves the hardness of pump cover body effectively, extends the working life of pump cover body.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
Fig. 1 is front view of the present utility model.
Fig. 2 is the three-dimensional structure schematic diagram at a visual angle of the present utility model.
Fig. 3 is that the A-A of Fig. 1 is to sectional view.
Fig. 4 is that the B-B of Fig. 1 is to sectional view.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1 to Fig. 4, a kind of automobile engine oil pump pump cover provided in figure, comprise pump cover body 100, pump cover body 100 has a round rotor region 111 on the end face 110 of pump housing (not shown), the center in round rotor region 111 offers a rotor shaft hatch 130, rotor shaft hatch 130 is preferably step-like axis hole, makes rotor shaft hatch 130 and rotor engagement better like this.
Edge external circumferential pump cover body 100 being positioned at round rotor region 111 is arranged at intervals with five mounting holes 140, the quantity of mounting hole 140 is not limited to the quantity in the present embodiment, should need to determine according to as installed, the mounting hole 140 of such design can make the sealing effect between pump cover body 100 and the pump housing better, stress equalization, connects more firm.Take up room to prevent the bolt head of the construction bolt on mounting hole 140 outstanding, mounting hole 140 should be set to counterbore, mounting hole 140 is preferably made up of cylindrical part 141 and frustoconic shape part 142, wherein, cylindrical part 141 is near the end face 110 of pump cover body 100 towards the pump housing, and frustoconic shape part 142 deviates from the end face 120 of the pump housing near pump cover body 100, the chamfering α of frustoconic shape part 142 is 90 °.During installation, the bolt head of construction bolt to sink in frustoconic shape part 132 and coordinates with frustoconic shape part 132 closed seamless.
Pump cover body 100 is at least provided with a hardness determination region 150 on the end face 110 of the pump housing, in the present embodiment, hardness determination region 150 is circular, quantity is two, one of them hardness determination region 150 is positioned at outside round rotor region 111, another hardness determination region 150 some be positioned at round rotor region 111.When carrying out hardness determination to pump cover body 100, adopting hardness tester to detect the hardness determination region 150 on pump cover body 100, without the need to determining surveyed area, improve detection efficiency, detecting convenient.
In order to improve the hardness of pump cover body 100, have the hardened layer (not shown) formed once carbonitriding process at the Surface coating of pump cover body 100, the thickness of hardened layer is 0.25 ~ 0.4mm, and hardness is 700 ~ 800HV0.2.On pump cover body 100, the concrete process of coated hardened layer is as follows: 1, pump cover body 100 is carried out cleaning oil removing; 2, the pump cover body 100 after cleaning oil removing is placed in frock to fix, puts into carbonitriding equipment together with frock and carry out carbonitriding process; 3, the pump cover body 100 after carbonitriding process is carried out surface and oil contaminant cleaning, then carry out temper.
Claims (6)
1. an automobile engine oil pump pump cover, comprise pump cover body, described pump cover body has a round rotor region on the end face of the pump housing, the center in described round rotor region offers a rotor shaft hatch, it is characterized in that, the edge external circumferential that described pump cover body is positioned at described round rotor region is arranged at intervals with some mounting holes, and described pump cover body is at least provided with a hardness determination region on the end face of the pump housing.
2. automobile engine oil pump pump cover as claimed in claim 1, it is characterized in that, the Surface coating of described pump cover body has the hardened layer formed once carbonitriding process.
3. automobile engine oil pump pump cover as claimed in claim 2, it is characterized in that, the thickness of described hardened layer is 0.25 ~ 0.4mm, and hardness is 700 ~ 800HV0.2.
4. automobile engine oil pump pump cover as claimed in claim 1, it is characterized in that, described hardness determination region is circular, quantity is two, one of them hardness determination region is positioned at outside described round rotor region, and another hardness determination region has at least a part to be positioned at described round rotor region.
5. automobile engine oil pump pump cover as claimed in claim 1, it is characterized in that, described mounting hole is made up of cylindrical part and frustoconic shape part.
6. automobile engine oil pump pump cover as claimed in claim 1, it is characterized in that, described rotor shaft hatch is step-like axis hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508928.6U CN204153439U (en) | 2014-09-04 | 2014-09-04 | A kind of automobile engine oil pump pump cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508928.6U CN204153439U (en) | 2014-09-04 | 2014-09-04 | A kind of automobile engine oil pump pump cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153439U true CN204153439U (en) | 2015-02-11 |
Family
ID=52511554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508928.6U Expired - Fee Related CN204153439U (en) | 2014-09-04 | 2014-09-04 | A kind of automobile engine oil pump pump cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153439U (en) |
-
2014
- 2014-09-04 CN CN201420508928.6U patent/CN204153439U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20210904 |