CN204552966U - A kind of cylinder head press-fiting oil sprayer bushing - Google Patents
A kind of cylinder head press-fiting oil sprayer bushing Download PDFInfo
- Publication number
- CN204552966U CN204552966U CN201520238306.0U CN201520238306U CN204552966U CN 204552966 U CN204552966 U CN 204552966U CN 201520238306 U CN201520238306 U CN 201520238306U CN 204552966 U CN204552966 U CN 204552966U
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- China
- Prior art keywords
- oil sprayer
- cylinder head
- sprayer bushing
- lining
- bushing
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Abstract
The utility model provides a kind of cylinder head press-fiting oil sprayer bushing, comprise cylinder head and oil sprayer, it is characterized in that: between described cylinder head and oil sprayer, be provided with oil sprayer bushing, described oil sprayer bushing comprises upper wide part and lower narrow portion, described upper wide part and described cylinder head interference fit, described lower narrow portion is squeezed in the lining draw-in groove of described oil sprayer bushing.Oil sprayer bushing of the present utility model embeds cylinder head by extrusion process and fixing and sealing, and the bush hole on oil sprayer bushing upper wide part and cylinder cap adopts interference fit, arranges O type circle enhanced leaktightness simultaneously; Under lining, narrow portion adopts extruded mode, is fixed and seals, and lining inner hole extruding is become final design size in the lining draw-in groove portion of material of lining being squeezed into cylinder cap.
Description
Technical field
The utility model relates to oil sprayer field, specifically, relates to a kind of cylinder head press-fiting oil sprayer bushing.
Background technique
Oil sprayer is the vitals of diesel engine, generally be arranged in cylinder head, cylinder head internal structure is complicated, and be provided with water cavity, oil sprayer needs to reach in the firing chamber below cylinder head, in order to simplify the internal structure of cylinder head, ensure the installation of oil sprayer, generally by press-fiting oil sprayer bushing to realize in cylinder head simultaneously.Therefore, oil sprayer bushing, except playing a part carrying oil sprayer, also must be convenient to press-fit, press-fit rear good airproof performance, avoid the water seepage outward in cylinder head water cavity, and the compression fuel mixture in firing chamber enter lining, affects engine performance.Mounting structure between oil sprayer bushing and cylinder cap directly determines the effect of above-mentioned each performance.
summary of the invention:
The technical problems to be solved in the utility model is to provide a kind of cylinder head press-fiting oil sprayer bushing, and structure is simple, is convenient to processing, and assembling easily, is convenient to promote.
The utility model adopts following technological scheme to realize goal of the invention:
A kind of cylinder head press-fiting oil sprayer bushing, comprise cylinder head and oil sprayer, it is characterized in that: between described cylinder head and oil sprayer, be provided with oil sprayer bushing, the upper end of described cylinder head is provided with bush hole, described oil sprayer bushing comprises upper wide part and lower narrow portion, described upper wide part and described bush hole interference fit, described lower narrow portion is squeezed in the lining draw-in groove of described oil sprayer bushing.
As the further restriction to the technical program, described cylinder head and oil sprayer bushing are sealed by seal ring.
As the further restriction to the technical program, the upper end of described lining draw-in groove is provided with draw-in groove chamfering.
As the further restriction to the technical program, described seal ring adopts O type circle, described cylinder head be provided with the use of O type ring recess, smear sealant layer outside described O type circle.
As the further restriction to the technical program, sealant layer is smeared in the outside of described lower narrow portion.
As the further restriction to the technical program, the lower narrow portion of described oil sprayer bushing allows to stretch out described lining draw-in groove, and is also provided with lining chamfering in the downside of described lower narrow portion.
Compared with prior art, advantage of the present utility model and good effect are: oil sprayer bushing of the present utility model embeds cylinder head by extrusion process and fixing and sealing, bush hole in oil sprayer bushing upper wide part and cylinder head adopts interference fit, arranges O type circle enhanced leaktightness simultaneously; Under oil sprayer bushing, narrow portion adopts extruded mode, is fixed and seals, and oil sprayer bushing inner hole extruding is become final design size in the lining draw-in groove portion of material of lining being squeezed into cylinder head.This oil sprayer bushing structure is simple, is convenient to processing, and assembling easily, is convenient to promote.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is a kind of structural representation that oil sprayer bushing of the present utility model coordinates with cylinder head.
Fig. 3 is the another kind of structural representation that oil sprayer bushing of the present utility model coordinates with cylinder head.
Fig. 4 is the third structural representation that oil sprayer bushing of the present utility model coordinates with cylinder head.
Fig. 5 is the structural representation of a kind of cylinder head of the present utility model.
Fig. 6 is the structural representation of the cylinder head of the second structure of the present utility model.
The structural representation of the cylinder head of the third structure that Fig. 7 is model utility.
In figure, 1, cylinder head, 2, oil sprayer bushing, 3, oil sprayer, 4, O type circle, 5, O type ring recess, 6, lining draw-in groove, 7, draw-in groove chamfering, 8, lining chamfering.
embodiment:
Below in conjunction with embodiment, further illustrate the utility model.
See Fig. 1-Fig. 7, oil sprayer bushing 2 is embedded in cylinder head 1, the upper end of described cylinder head 1 is provided with bush hole, oil sprayer bushing 2 upper wide part and bush hole adopt interference fit, simultaneously, between the upper wide part and cylinder head 1 of oil sprayer bushing 2, arrange O type circle 3 enhanced leaktightness, cylinder head 1 is provided with O type ring recess for this reason; The lower narrow portion of oil sprayer bushing 2 adopts extruded mode, is fixed and seals, and narrow portion inner hole extruding under lining is become final design size in the lining draw-in groove 6 portion of material of oil sprayer bushing 2 being squeezed into cylinder head 1.
Load in cylinder head 1 for the ease of oil sprayer bushing 2, avoid simultaneously in assembly process, the wedge angle in cylinder head 1, oil sprayer bushing 2 scratch, arranges draw-in groove chamfering 7 in the upper end of the lining draw-in groove 6 of cylinder head 1.
The buckle structure of the little head part of described oil sprayer bushing 2, oil sprayer bushing 2 can be selected not stretch out cylinder head 1, directly extruded form, as shown in Figure 1, Figure 2, Figure 3 shows, also oil sprayer bushing 2 can be selected to stretch out cylinder head 1, and then by machining, extension is removed, finally the form that chamfering 8 removes burr is set at the bottom outlet of oil sprayer bushing 2, as shown in Figure 4, as shown in Figure 5, cylinder head corresponding to Fig. 2, Fig. 3 structure respectively as shown in Figure 6, Figure 7 for cylinder head bush hole corresponding to Fig. 1, Fig. 4 structure.
In order to ensure sealing effect, described cylinder head assembly is in the process press-fiting oil sprayer bushing 2, and in the outside of O type circle, the outside of oil sprayer bushing 2 times narrow portions is coated with sealer.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (6)
1. one kind press-fits the cylinder head of oil sprayer bushing, comprise cylinder head and oil sprayer, it is characterized in that: between described cylinder head and oil sprayer, be provided with oil sprayer bushing, the upper end of described cylinder head is provided with bush hole, described oil sprayer bushing comprises upper wide part and lower narrow portion, described upper wide part and described bush hole interference fit, described lower narrow portion is squeezed in the lining draw-in groove of described cylinder head.
2. the cylinder head press-fiting oil sprayer bushing according to claim 1, is characterized in that: described cylinder head and oil sprayer bushing are sealed by seal ring.
3. the cylinder head press-fiting oil sprayer bushing according to claim 1, is characterized in that: the upper end of described lining draw-in groove is provided with draw-in groove chamfering.
4. the cylinder head press-fiting oil sprayer bushing according to claim 2, is characterized in that: described seal ring adopts O type circle, described cylinder head be provided with the use of O type ring recess, smear sealant layer outside described O type circle.
5. the cylinder head press-fiting oil sprayer bushing according to claim 1, is characterized in that: sealant layer is smeared in the outside of described lower narrow portion.
6. the cylinder head press-fiting oil sprayer bushing according to claim 1, is characterized in that: the lower narrow portion of described oil sprayer bushing allows to stretch out described lining draw-in groove, and is also provided with lining chamfering in the downside of described lower narrow portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520238306.0U CN204552966U (en) | 2015-04-20 | 2015-04-20 | A kind of cylinder head press-fiting oil sprayer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520238306.0U CN204552966U (en) | 2015-04-20 | 2015-04-20 | A kind of cylinder head press-fiting oil sprayer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204552966U true CN204552966U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520238306.0U Active CN204552966U (en) | 2015-04-20 | 2015-04-20 | A kind of cylinder head press-fiting oil sprayer bushing |
Country Status (1)
| Country | Link |
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| CN (1) | CN204552966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443266A (en) * | 2015-11-24 | 2016-03-30 | 安徽全柴动力股份有限公司 | Copper bush sealing structure for fuel injector and fuel injector sealing method |
| CN107044371A (en) * | 2017-03-24 | 2017-08-15 | 中国北方发动机研究所(天津) | A kind of fuel injector sealing structure and installation method for cylinder head |
-
2015
- 2015-04-20 CN CN201520238306.0U patent/CN204552966U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443266A (en) * | 2015-11-24 | 2016-03-30 | 安徽全柴动力股份有限公司 | Copper bush sealing structure for fuel injector and fuel injector sealing method |
| CN107044371A (en) * | 2017-03-24 | 2017-08-15 | 中国北方发动机研究所(天津) | A kind of fuel injector sealing structure and installation method for cylinder head |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |