CN211058938U - Fixing device of oil sprayer - Google Patents
Fixing device of oil sprayer Download PDFInfo
- Publication number
- CN211058938U CN211058938U CN201922053177.9U CN201922053177U CN211058938U CN 211058938 U CN211058938 U CN 211058938U CN 201922053177 U CN201922053177 U CN 201922053177U CN 211058938 U CN211058938 U CN 211058938U
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- sleeve
- fuel injector
- fixing device
- oil sprayer
- sprayer
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Abstract
The utility model relates to an engine parts technical field especially relates to a fixing device of sprayer. The utility model provides a fixing device of sprayer, including the sprayer cover, be provided with the external screw thread on the outer wall of the lower part of sprayer cover, be provided with the draw-in groove on the inner wall of the lower part of sprayer cover, the draw-in groove is configured into and screws up the instrument joint to make and screw up the instrument and drive the sprayer cover and rotate, make the external screw thread of sprayer cover and the internal thread threaded connection in sprayer chamber. The outer wall of the lower portion of the oil sprayer sleeve is provided with the outer threads, and the inner wall of the lower portion of the oil sprayer sleeve is provided with the clamping groove, so that the oil sprayer sleeve is connected to an oil sprayer cavity of the cylinder cover in a threaded mode through the matching of the tightening tool and the clamping groove, the oil sprayer sleeve can be prevented from deforming under the tightening torque of the tightening tool, and water leakage of the oil sprayer sleeve caused by false tightening is avoided.
Description
Technical Field
The utility model relates to an engine parts technical field especially relates to a fixing device of sprayer.
Background
Four-valve diesel engines have become the mainstream technology of commercial vehicle engines, a cylinder cover adopts a four-valve mechanism, and an oil injector can be arranged in the center of a cylinder. In order to ensure the cooling and casting manufacturability of the cylinder cover, the oil injector is fixedly arranged on the cylinder cover by adopting an oil injector sleeve. The fuel injector sleeve is positioned in the center of the cylinder cover and plays a role in supporting the fuel injector and isolating the fuel injector from the cooling liquid.
At present, a thread is generally arranged at the lower part of the fuel injector sleeve, and a screwing mechanism is arranged at the top part of the fuel injector sleeve, so that the fuel injector sleeve can be fixed on a cylinder cover through the thread at the lower part of the fuel injector sleeve by a screwing tool. Due to the fact that the wall thickness of the oil sprayer sleeve is thin, the rigidity is poor, the technical scheme that the top of the lower thread is screwed tightly can cause water leakage of the oil sprayer sleeve due to the fact that the oil sprayer sleeve deforms and friction force between the oil sprayer sleeve and the cylinder cover generates false screwing conditions.
Therefore, a new fuel injector fixing device is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sprayer cover to solve the false problem of screwing up and leading to sprayer cover to leak that causes because of sprayer cover deformation that exists among the prior art.
In order to realize the purpose, the following technical scheme is provided:
a fuel injector fixing device for fixedly mounting a fuel injector in an injector cavity of a cylinder head, the fuel injector fixing device comprising:
the outer wall of the lower portion of the oil sprayer sleeve is provided with an external thread, the inner wall of the lower portion of the oil sprayer sleeve is provided with a clamping groove, the clamping groove is configured to be clamped with a tightening tool, and the tightening tool can drive the oil sprayer sleeve to rotate so that the external thread of the oil sprayer sleeve is in threaded connection with the internal thread of the oil sprayer cavity.
As a preferable scheme of the fixing device of the fuel injector, the fuel injector sleeve is in a stepped shaft shape, the fuel injector cavity is in a stepped hole shape, and a shaft shoulder of the fuel injector sleeve is configured to be in sealing connection with a hole shoulder of the fuel injector cavity.
As a preferable aspect of the fixing device of the fuel injector, the fixing device of the fuel injector further includes a seal ring configured to be disposed between an outer wall of the fuel injector sleeve and an inner wall of the fuel injector cavity.
As a preferable mode of the fuel injector fixing device, the seal ring is arranged on the upper portion of the fuel injector sleeve.
As a preferable scheme of the fixing device of the fuel injector, the sealing ring is an O-shaped sealing ring.
As a preferable scheme of the fixing device of the fuel injector, the clamping groove is a non-circular clamping groove extending along the axial direction of the fuel injector sleeve.
As a preferable scheme of the fixing device of the oil sprayer, a stepped hole is formed in the oil sprayer sleeve, and the clamping groove is formed in the hole wall of the stepped hole.
As a preferable mode of the fuel injector fixing device, the clamping groove extends along a central line direction of the stepped hole.
As a preferable scheme of the fixing device of the fuel injector, the plurality of clamping grooves are arranged on the hole wall of the stepped hole at intervals along the circumferential direction of the stepped hole.
As a preferable scheme of the fixing device of the oil sprayer, the clamping groove is in a circular arc shape.
As a preferable scheme of the fixing device of the oil sprayer, the six clamping grooves are uniformly arranged along the circumferential direction of the stepped hole to form a quincunx shape.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a fixing device of sprayer, including the sprayer cover, be provided with the external screw thread on the outer wall of the lower part of sprayer cover, be provided with the draw-in groove on the inner wall of the lower part of sprayer cover, the draw-in groove is configured into and screws up the instrument joint to make and screw up the instrument and drive the sprayer cover and rotate, make the external screw thread of sprayer cover and the internal thread threaded connection in sprayer chamber. The outer wall of the lower portion of the oil sprayer sleeve is provided with the outer threads, and the inner wall of the lower portion of the oil sprayer sleeve is provided with the clamping groove, so that the oil sprayer sleeve is connected to an oil sprayer cavity of the cylinder cover in a threaded mode through the matching of the tightening tool and the clamping groove, the oil sprayer sleeve can be prevented from deforming under the tightening torque of the tightening tool, and water leakage of the oil sprayer sleeve caused by false tightening is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is an assembly schematic diagram of a fixing device of a fuel injector and a cylinder head according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fuel injector sleeve according to an embodiment of the present invention;
fig. 3 is a top view of a fuel injector sleeve according to an embodiment of the present invention.
Reference numerals:
100-a cylinder head; 101-injector cavity; 200-cooling liquid;
1-oil sprayer sleeve; 11-external thread; 12-a card slot; 13-shaft shoulder; 14-the centre line;
2-sealing ring.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below by referring to the drawings and the detailed description.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that are usually placed when the product is used, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and the like are used for descriptive purposes only or to distinguish between different structures or components and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-2, the present embodiment provides a fuel injector securing arrangement for fixedly mounting a fuel injector within an injector cavity 101 in a cylinder head 100. The fixing device of the oil sprayer comprises an oil sprayer sleeve 1, wherein an external thread 11 is arranged on the outer wall of the lower portion of the oil sprayer sleeve 1, a clamping groove 12 is arranged on the inner wall of the lower portion of the oil sprayer sleeve 1, and the clamping groove 12 is configured to be clamped with a tightening tool so that the tightening tool drives the oil sprayer sleeve 1 to rotate, and the external thread 11 of the oil sprayer sleeve 1 is in threaded connection with an internal thread of the oil sprayer cavity 101. The outer thread 11 is arranged on the outer wall of the lower portion of the oil sprayer sleeve 1, and the clamping groove 12 is arranged on the inner wall of the lower portion of the oil sprayer sleeve 1, so that the screwing tool is matched with the clamping groove 12 to enable the oil sprayer sleeve 1 to be in threaded connection with the oil sprayer cavity 101 of the cylinder cover 100, deformation of the oil sprayer sleeve 1 under the screwing torque of the screwing tool can be prevented, and water leakage of the oil sprayer sleeve caused by false screwing is avoided.
As shown in fig. 2, the injector is disposed in the injector cavity 101 and is fixedly connected to the injector jacket 1, and the injector jacket 1 can isolate the injector from the coolant 200 in the cylinder head 100.
Preferably, the injector sleeve 1 is in a stepped shaft shape, the injector cavity 101 is in a stepped hole shape, and the shaft shoulder 13 of the injector sleeve 1 is configured to be in sealing connection with the hole shoulder of the injector cavity 101, so as to seal the lower part of the injector sleeve 1 and prevent water leakage.
Preferably, the fuel injector fixing device further comprises a sealing ring 2, and the sealing ring 2 is configured to be arranged between the outer wall of the fuel injector sleeve 1 and the inner wall of the fuel injector cavity 101 to prevent the cooling liquid 200 from leaking.
Further, a packing 2 is provided at an upper portion of the injector housing 1 to seal the upper portion of the injector housing 1 and prevent the coolant 200 from leaking from the upper portion of the injector housing 1.
Illustratively, the seal ring 2 is an O-ring seal.
Preferably, the fuel injector sleeve 1 is provided with a stepped hole, the clamping groove 12 is formed in the wall of the stepped hole, and the fuel injector sleeve 1 is provided with the stepped hole, so that the clamping groove 12 can be conveniently machined, and meanwhile, a tightening tool can be conveniently matched with the clamping groove 12.
Further, as shown in fig. 1-2, the clamping groove 12 extends along a central line 14 of the stepped hole, so that the tightening tool is clamped with the clamping groove 12, the tightening tool drives the fuel injector sleeve 1 to rotate, and the external thread 11 of the fuel injector sleeve 1 is in threaded connection with the internal thread of the fuel injector cavity 101 on the cylinder head 100.
As shown in fig. 3, a plurality of engaging grooves 12 are arranged on the wall of the stepped hole at intervals in the circumferential direction of the stepped hole. Preferably, the slot 12 is circular arc shaped.
Illustratively, six slots 12 are arranged uniformly in the circumferential direction of the stepped hole to form a quincunx shape. Further, the clamping grooves 12 are semicircular, and six semicircular clamping grooves 12 form a hexagonal quincunx screwing structure, so that the screwing tool can be matched with the fuel injector sleeve 1 conveniently, and the fuel injector sleeve 1 is prevented from deforming under the screwing force moment of the screwing tool.
In other embodiments, the clamping groove 12 may also be a non-circular clamping groove extending along the axial direction of the fuel injector sleeve 1, so that the tightening tool is clamped with the clamping groove 12, and the tightening tool can drive the fuel injector sleeve 1 to rotate together when rotating. Illustratively, the card slot 12 may be square, hexagonal, etc. The clamping groove 12 may also be in other shapes as long as it can be ensured that the tightening tool can be matched with the clamping groove 12, so that the tightening tool drives the fuel injector sleeve 1 to rotate together when rotating, which is not illustrated herein.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A fuel injector fixing device for fixedly mounting a fuel injector in an injector cavity (101) in a cylinder head (100), characterized in that the fuel injector fixing device comprises:
the oil sprayer sleeve comprises an oil sprayer sleeve (1), wherein an external thread (11) is arranged on the outer wall of the lower portion of the oil sprayer sleeve (1), a clamping groove (12) is formed in the inner wall of the lower portion of the oil sprayer sleeve (1), the clamping groove (12) is configured to be clamped with a tightening tool, and the tightening tool can drive the oil sprayer sleeve (1) to rotate so that the external thread (11) of the oil sprayer sleeve (1) is connected with an internal thread of an oil sprayer cavity (101).
2. A fuel injector fixing arrangement according to claim 1, characterized in that the injector housing (1) is stepped shaft-like, the injector cavity (101) is stepped bore-like, and that a shaft shoulder (13) of the injector housing (1) is arranged to sealingly connect with a bore shoulder of the injector cavity (101).
3. The fuel injector fixing device according to claim 2, characterized in that it further comprises a sealing ring (2), said sealing ring (2) being configured to be arranged between an outer wall of the injector sleeve (1) and an inner wall of the injector cavity (101).
4. A fuel injector fixing device according to claim 3, characterized in that the sealing ring (2) is arranged in the upper part of the injector housing (1).
5. Fuel injector fixing device according to claim 4, characterized in that the sealing ring (2) is an O-ring.
6. A fuel injector fixing device according to any one of claims 1-5, characterized in that the clamping groove (12) is a non-circular clamping groove extending in the axial direction of the fuel injector sleeve (1).
7. A fuel injector fixing device according to any one of claims 1-5, characterized in that the fuel injector sleeve (1) is provided with a stepped hole, and the clamping groove (12) is arranged on the wall of the stepped hole.
8. A fuel injector fixing device according to claim 7, characterized in that the catch groove (12) extends in the direction of the centre line (14) of the stepped bore.
9. The fuel injector fixing device according to claim 8, characterized in that a plurality of the locking grooves (12) are arranged on the wall of the stepped hole at intervals in the circumferential direction of the stepped hole.
10. A fuel injector fixing device according to claim 9, characterised in that the clamping groove (12) is circular arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922053177.9U CN211058938U (en) | 2019-11-25 | 2019-11-25 | Fixing device of oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922053177.9U CN211058938U (en) | 2019-11-25 | 2019-11-25 | Fixing device of oil sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211058938U true CN211058938U (en) | 2020-07-21 |
Family
ID=71591770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922053177.9U Active CN211058938U (en) | 2019-11-25 | 2019-11-25 | Fixing device of oil sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211058938U (en) |
-
2019
- 2019-11-25 CN CN201922053177.9U patent/CN211058938U/en active Active
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