CN202867169U - Fuel injection pump body oil groove seal structure - Google Patents
Fuel injection pump body oil groove seal structure Download PDFInfo
- Publication number
- CN202867169U CN202867169U CN 201220517055 CN201220517055U CN202867169U CN 202867169 U CN202867169 U CN 202867169U CN 201220517055 CN201220517055 CN 201220517055 CN 201220517055 U CN201220517055 U CN 201220517055U CN 202867169 U CN202867169 U CN 202867169U
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- hole
- core
- oil groove
- pump body
- oil
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Abstract
The utility model discloses a fuel injection pump body oil groove seal structure which comprises a die-casting fuel injection pump body, wherein the top end of the fuel injection pump body is provided with a plunger hole, an oil groove is arranged under the plunger hole, an oil inlet hole and a core-pulling hole are respectively formed in the opposite groove walls on the two sides of the oil groove, a step is formed in the core-pulling hole, a choke plug matched with the step is arranged in the core-pulling hole, and the choke plug is in interference fit with the core-pulling hole. The fuel injection pump body oil groove seal structure has the advantages that sealing effect is good, and oil-leaking of the oil groove is prevented.
Description
Technical field
The utility model relates to a kind of sealing configuration, relates in particular to the oil groove sealing configuration of the oil jet pump body that a kind of die casting forms.
Background technique
The existing diesel fuel injection pump pump housing mainly is that cast is produced, and the time of cast is long, efficient is low, and the rising head of cast is thick large, and the raw material that expends is many, and the up-to-standard rate of cast is low, and profile is also comparatively coarse.In order to overcome the problems referred to above, part producer uses the Die Casting oil jet pump body instead, has improved manufacturing efficiency and product percent of pass, has reduced material loss.
But existing oil jet pump body die casting mould is after loosing core, and meeting is at the core-drawing hole of the opposite of the oil inlet hole of the oil groove of pump housing formation, and this unnecessary core-drawing hole need to carry out encapsulation process, prevents the oil groove leakage of oil.
The model utility content
The utility model is intended to provide a kind of sealing configuration that prevents the oil jet pump body oil groove leakage of oil that die casting is made.
The purpose of this utility model can reach by following measures: a kind of oil jet pump body oil groove sealing configuration, the oil jet pump body that comprises die cast, pump housing top is plunger hole, the plunger hole below is oil groove, have oil inlet hole and core-drawing hole on the relative cell wall in oil groove two sides, form step in the hole of described core-drawing hole, be provided with plug, described plug and core-drawing hole interference fit with the step coupling in the described core-drawing hole.
The technique scheme difference with the prior art is: the utility model is for the sealing configuration of the core-drawing hole design of the oil jet pump body oil groove of die casting manufacturing, core-drawing hole is designed to step-like, stressed pedestal as plug is installed can limit plug in the axial displacement of core-drawing hole; After plug and the core-drawing hole interference fit, then core-drawing hole sealing.
Further, in order to improve further sealing effect, the angle of the step of described core-drawing hole and core-drawing hole hole wall is provided with seal ring or sealer less than 90 ° in this angle.
The disclosed oil jet pump body oil groove of the utility model sealing configuration, good sealing effect can prevent the oil groove leakage of oil.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the plan structure schematic diagram of the utility model embodiment 1 oil jet pump body oil groove sealing configuration;
Fig. 2 is that Fig. 1 is along the sectional structure schematic diagram of A-A line;
Fig. 3 is the structure for amplifying schematic diagram of B part among Fig. 2;
Fig. 4 is the perspective view of the utility model embodiment 1 oil jet pump body oil groove sealing configuration.
Embodiment
Embodiment 1: as shown in Figure 1, Figure 2, Figure 3 and Figure 4: a kind of oil jet pump body oil groove sealing configuration, comprise the oil jet pump body 1 by the aluminium alloy stock die cast, the pump housing 1 top is plunger hole 2, plunger hole 2 belows are oil grooves 3, the oil groove 3 of the pump housing 1 can form core-drawing hole 5 at the cell wall on oil groove 3 oil inlet holes 4 opposites after the demoulding of loosing core.
These core-drawing hole 5 apertures are square, and form step 6 in core-drawing hole 5 holes, and the angle of this step 6 and core-drawing hole 5 hole walls is less than 90 °, and this angle snaps in fluorine glue seal ring 7; In the described core-drawing hole 5 with the plug 8 of step 6 couplings, this plug 8 be square Al alloy block, these plug 8 and core-drawing hole 5 interference fit.
The step 6 of described core-drawing hole 5 can be individual layer step, double-deck step or multilayer steps, described plug 8 can be respectively from the dull and stereotyped square aluminum alloy block of different step exponent numbers couplings, with the square aluminum alloy block of a boss or with the square aluminum alloy block of a plurality of boss, the exponent number of step 6 is N, and then the number of plug boss is (N-1).
Embodiment 2: difference from Example 1 is step 6 and the interior filling with sealant of the angle of core-drawing hole 5 hole wall jointing places, and all the other features are identical with embodiment 1.
The above is the detailed description of the utility model preferred embodiment only, is not to limit the utility model, and the embodiment of all similar variations of doing according to creation spirit of the present utility model all should be contained among the utility model.
Claims (2)
1. oil jet pump body oil groove sealing configuration, the oil jet pump body that comprises die cast, pump housing top is plunger hole, the plunger hole below is oil groove, have oil inlet hole and core-drawing hole on the relative cell wall in oil groove two sides, it is characterized in that: form step in the hole of described core-drawing hole, be provided with plug, described plug and core-drawing hole interference fit with the step coupling in the described core-drawing hole.
2. oil jet pump body oil groove sealing configuration according to claim 1, it is characterized in that: the angle of the step of described core-drawing hole and core-drawing hole hole wall is provided with seal ring or sealer less than 90 ° in this angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517055 CN202867169U (en) | 2012-10-10 | 2012-10-10 | Fuel injection pump body oil groove seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517055 CN202867169U (en) | 2012-10-10 | 2012-10-10 | Fuel injection pump body oil groove seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867169U true CN202867169U (en) | 2013-04-10 |
Family
ID=48033892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220517055 Expired - Fee Related CN202867169U (en) | 2012-10-10 | 2012-10-10 | Fuel injection pump body oil groove seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878069A (en) * | 2012-10-10 | 2013-01-16 | 重庆百吉四兴压铸有限公司 | Oil groove sealing structure of fuel injection pump body |
-
2012
- 2012-10-10 CN CN 201220517055 patent/CN202867169U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878069A (en) * | 2012-10-10 | 2013-01-16 | 重庆百吉四兴压铸有限公司 | Oil groove sealing structure of fuel injection pump body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131010 |