CN216872302U - Electric signal transmission structure for fuel filter - Google Patents
Electric signal transmission structure for fuel filter Download PDFInfo
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- CN216872302U CN216872302U CN202220625911.3U CN202220625911U CN216872302U CN 216872302 U CN216872302 U CN 216872302U CN 202220625911 U CN202220625911 U CN 202220625911U CN 216872302 U CN216872302 U CN 216872302U
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Abstract
The utility model discloses an electric signal transmission structure for a fuel filter, which comprises a base, wherein the base is downwards in threaded connection with a lower shell; the filter element is provided with a cylindrical inner cavity, the center of the top of the base is provided with a connecting cylinder downwards, an outer central cylinder is arranged in the cylindrical framework, and the top end of the outer central cylinder is upwards welded with the connecting cylinder through a connecting part; an inner central cylinder is arranged in the outer central cylinder and is upwards connected with the base; the inner central cylinder is connected with two binding posts through a connecting structure, the bottom ends of the two binding posts downwards penetrate through the central hole of the lower end cover of the filter element and extend into the upper part of the water accumulation bottom cavity, and the top end of the two binding posts extends out of the inner central cylinder. The utility model has the advantages that the electric signal wiring is not required to be disassembled when the filter element is maintained, the risk that the electric signal wiring is not in place during secondary assembly is avoided, and the risk that the wiring harness cannot be effectively fixed in the running process of a vehicle due to the fact that the length of the wiring harness cannot be optimized is also avoided.
Description
Technical Field
The utility model relates to an electric signal transmission structure for a fuel filter.
Background
The existing fuel filter comprises a base, a lower shell is connected with the base in a downward threaded manner, and an annular fuel inlet cavity is defined by the base, a filter element, an upper end cover of the filter element and a lower end cover of the filter element; the base is provided with an oil inlet communicated with the oil inlet cavity; the filter element is provided with a cylindrical inner cavity, and a cylindrical framework is arranged in the cylindrical inner cavity; the inner side of the cylindrical framework is provided with an oil purifying passage, and the base is provided with an oil outlet communicated with the oil purifying passage; a water accumulation bottom cavity is enclosed between the lower end cover of the filter element and the lower shell, and a water drain valve is arranged at the bottom of the lower shell downwards.
One function of the fuel filter is to separate water in fuel, the water in the fuel can be stored at the bottom of the fuel filter (water accumulation bottom cavity) after being separated, and if the water at the bottom is excessively immersed into filter paper, the filtering efficiency of the fuel filter can be reduced sharply. In extreme cases, the filtered water flows into the engine to cause permanent damage to the engine; to avoid this, a water level alarm is often provided at the bottom of the filter. On the other hand, fuel oil can be waxed at low temperature, and after the waxing, the resistance of a fuel oil system is increased rapidly, so that the engine cannot be started and other severe damages are caused;
to avoid this, fuel heating devices are often arranged in the fuel filter, while it is a common option to arrange fuel heating devices in the bottom of the filter.
No matter the water level sensor or the fuel heater, the electric signal is required to be led out, and the common connection mode is that the electric signal is directly connected out of the lower shell, so that the connection structure of the electric signal is required to be disassembled when the filter element is maintained, and the risk that the electric signal connection structure is not assembled in place during secondary assembly exists; meanwhile, the length of the wiring harness cannot be optimized, so that the wiring harness cannot be effectively fixed in the running process of a vehicle, and the like.
To alleviate the above-mentioned risks, it is necessary to design a structure for taking out the electric device from the base. Due to the structural limitation, the adoption of the transmission of the electric signal from the middle of the filter element is a feasible option.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electric signal transmission structure for a fuel filter, which is used for receiving an electric signal from a fuel filter base.
In order to achieve the aim, the electric signal transmission structure for the fuel filter comprises a base, wherein the base is downwards in threaded connection with a lower shell, a cavity defined by the base and the lower shell is internally provided with a filter element, and the filter element is provided with a filter element upper end cover and a filter element lower end cover;
an annular oil inlet cavity is defined by the base, the filter element upper end cover and the filter element lower end cover; the upper end cover and the lower end cover of the filter element are both provided with central holes;
the base is provided with an oil inlet communicated with the oil inlet cavity; the filter element is provided with a cylindrical inner cavity, and a central hole of the upper end cover of the filter element and a central hole of the lower end cover of the filter element are both positioned on one side of the cylindrical inner cavity of the filter element;
a cylindrical framework is arranged in the cylindrical inner cavity; the radial inner side of the cylindrical framework is provided with an oil purifying passage, and the base is provided with an oil outlet communicated with the oil purifying passage;
a water accumulation bottom cavity is defined between the lower end cover of the filter element and the lower shell, and a water drain valve is arranged at the bottom of the lower shell downwards; the method is characterized in that:
a connecting cylinder is downwards arranged at the center of the top of the base, the connecting cylinder downwards penetrates through a center hole of the upper end cover of the filter element and is in sealing fit with the upper end cover of the filter element, an outer center cylinder is arranged in the cylindrical framework, a connecting part is radially extended from the top end of the outer center cylinder, and the connecting part is upwards welded with the connecting cylinder;
an inner central cylinder is arranged in the outer central cylinder, the inner central cylinder is coaxial with the outer central cylinder, and the inner central cylinder is upwards connected with the base; the inner central cylinder is connected with two binding posts through a connecting structure, the bottom ends of the two binding posts downwards penetrate through the central hole of the lower end cover of the filter element and extend into the upper part of the water accumulation bottom cavity, and the top end of the two binding posts extends out of the inner central cylinder.
The connection structure between the inner center tube and the two binding posts is specifically as follows:
the inner central cylinder is provided with a bottom wall, two stepped holes with downward openings are formed in the bottom wall of the inner central cylinder at intervals, the two binding posts correspond to the two stepped holes one by one, and the binding posts are respectively inserted into the corresponding stepped holes from bottom to top; a boss matched with the step hole is arranged at the radial bulge of the bottom of the binding post, and an inner annular sealing ring is arranged between the top surface of the boss and the hole bottom of the step hole in a pressing mode; and insulating glue is filled in a cavity formed by the two binding posts and the inner central cylinder to form an insulating glue layer.
A fixed block extends upwards from the bottom wall of the inner central cylinder between the two step holes, the fixed block extends downwards to be provided with a partition plate extending into the water accumulation bottom cavity, and the partition plate divides two binding posts below the inner central cylinder;
radial protrusion is equipped with big end down's annular barb on the terminal of step hole top, and the interval is equipped with twice or multichannel about the annular barb, the inner wall of an annular barb and interior center section of thick bamboo and form interference fit between the fixed block.
A first annular sealing groove is formed in the central hole of the upper end cover of the filter element, and a first annular sealing ring is arranged between the first annular sealing groove and the outer wall of the connecting cylinder in a pressing mode;
an annular sealing cylinder is connected to the radial inner side of the bottom end of the framework, a second annular sealing groove is formed in the outer wall of the bottom end of the outer central cylinder, and a second annular sealing ring is arranged between the second annular sealing groove and the inner wall of the sealing cylinder in a pressing mode;
the upper part of the outer central cylinder is provided with a lower step in an inward radial bulge manner, the inner central cylinder above the lower step is provided with an upper step in an outward radial bulge manner, the upper step and the lower step are enclosed to form a third annular sealing groove, a third annular sealing ring is arranged in the third annular sealing groove, and the third annular sealing ring is in extrusion press fit with the upper step and the lower step in the vertical direction;
the upper part of the lower shell is inserted into the base and is provided with a threaded part in threaded fit with the inner wall of the base, a fourth annular sealing groove is arranged on the lower shell below the threaded part, and a fourth annular sealing ring is arranged between the fourth annular sealing groove and the inner wall of the base in a pressing mode; and a fifth annular sealing ring is arranged between the fifth annular sealing groove and the inner wall of the lower shell in a pressing manner.
An annular oil purification passage is formed between the framework and the outer central cylinder, an annular oil purification cavity is defined by the connecting part of the outer central cylinder, the connecting cylinder and the inner central cylinder, and an oil outlet connected with the oil purification cavity is arranged on the base; the connecting part of the outer central cylinder is provided with a through hole for connecting the oil purifying passage and the oil purifying cavity. An annular water falling port is arranged between the hole wall of the central hole of the lower end cover of the filter element and the sealing barrel, and the lower end of the framework is connected with the water falling port.
The upper end of the inner central cylinder is provided with an expanding part and is opened on the top surface of the base, and the upper end of the binding post is positioned in the expanding part.
The utility model has the following advantages:
through the structures of the inner center cylinder, the outer center cylinder, the two binding posts and the like, the smooth oil way is realized, meanwhile, the electric signal wiring is prevented from being led out from the lower shell, the filter element has the advantage that the electric signal wiring does not need to be disassembled (the binding posts are not influenced when the shell is disassembled) during maintenance, the risk that the electric signal wiring is not assembled in place during secondary assembly is avoided, and the risk that the wire harness cannot be effectively fixed in the running process of a vehicle due to the fact that the length of the wire harness cannot be optimized is also avoided. The whole vehicle structure is more reasonable, the fixing of the wire harness is more reliable, and the whole arrangement is more beautiful and coordinated.
By pouring the insulating glue, the sealing effect is achieved, and the insulating property is guaranteed. Through the cooperation of step hole and boss, the depth of insertion of terminal is very easy to fix a position, the assembly of being convenient for. The inner annular sealing ring prevents water in the water accumulation cavity from upwards permeating along the position where the boss is not tightly matched with the step hole, and the upper binding post and the insulating glue layer are protected in a working environment.
Annular barb and interior center section of thick bamboo the inner wall and form interference fit between the fixed block, further made things convenient for the assembly terminal to make the terminal assemble more firmly. During assembly, as long as the wiring terminal is inserted into the step hole from bottom to top and is tightly inserted, the wiring terminal can be fixed through interference fit, and the wiring terminal does not need to be held by hands or clamped and positioned by using tools during operations such as pouring insulating glue. The annular barbs are small in upper portion and large in lower portion, and the body connecting column can be conveniently inserted into the inner center barrel from bottom to top.
The arrangement of each annular sealing ring ensures that all the parts inside and outside the sealing device are well sealed and keep a good working state.
In the utility model, the binding post and the insulating glue layer occupy the central part of the original fuel oil passage after filtration and purification, so that the fuel oil flow path after filtration and purification is adaptively modified.
Drawings
FIG. 1 is a schematic cross-sectional structural view of the present invention;
FIG. 2 is a cross-sectional structural view of the susceptor;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an enlarged view at B in fig. 2.
Detailed Description
As shown in fig. 1 to 4, the fuel filter comprises a base 1, wherein the base 1 is downwards connected with a lower shell 11 in a threaded manner, a filter element 8-2 is arranged in a cavity enclosed by the base 1 and the lower shell 11, and the filter element 8-2 is provided with a filter element upper end cover 8-1 and a filter element lower end cover 8-3;
an annular oil inlet cavity 8-5 is defined by the base 1, the filter element 8-2, the filter element upper end cover 8-1 and the filter element lower end cover 8-3; the upper end cover 8-1 and the lower end cover 8-3 of the filter element are both provided with central holes;
an oil inlet 13 communicated with the oil inlet cavity 8-5 is arranged on the base 1; the filter element 8-2 is provided with a cylindrical inner cavity, and a central hole of the upper end cover 8-1 of the filter element and a central hole of the lower end cover 8-3 of the filter element are both positioned at one side of the cylindrical inner cavity of the filter element 8-2;
a cylindrical framework 14 is arranged in the cylindrical inner cavity; the radial inner side of the cylindrical framework 14 is provided with an oil purifying passage 15, and the base 1 is provided with an oil outlet communicated with the oil purifying passage 15; the oil outlet is conventional and is hidden from view and not shown.
A water accumulation bottom cavity 16 is enclosed between the filter element lower end cover 8-3 and the lower shell 11, and a water drain valve 17 is arranged at the bottom of the lower shell 11 downwards; a connecting cylinder 18 is downwards arranged at the center of the top of the base 1, the connecting cylinder 18 downwards penetrates through a central hole of the upper end cover 8-1 of the filter element and is in sealing fit with the upper end cover 8-1 of the filter element, an outer central cylinder 6 is arranged in the cylindrical framework 14, a connecting part 19 is radially extended from the top end of the outer central cylinder 6, and the connecting part 19 is upwards welded with the connecting cylinder 18; the part indicated by reference numeral 20 in the drawing is where the connecting portion 19 is welded to the connecting cylinder 18.
An inner central cylinder 4 is arranged in the outer central cylinder 6, the inner central cylinder 4 is coaxial with the outer central cylinder 6, and the inner central cylinder 4 is upwards connected with the base 1; the inner central cylinder 4 is connected with two binding posts 2 through a connecting structure, the bottom ends of the two binding posts 2 downwards penetrate through the central hole of the filter element lower end cover 8-3 to extend into the upper part of the water accumulation bottom cavity 16, and the top end of the inner central cylinder 4 extends out of the inner central cylinder.
Through the structures of the inner center barrel 4, the outer center barrel 6, the two wiring posts 2 and the like, the smooth oil circuit is realized, meanwhile, the electric signal wiring is prevented from being led out from the lower shell 11, the filter element 8-2 is maintained without disassembling the electric signal wiring (the wiring posts 2 are not influenced by disassembling the shell 11), the risk that the electric signal wiring is not assembled in place during secondary assembly is avoided, and the risk that the wiring harness cannot be effectively fixed in the running process of a vehicle due to the fact that the length of the wiring harness cannot be optimized is also avoided. The whole vehicle structure is more reasonable, the fixing of the wire harness is more reliable, and the whole arrangement is more beautiful and coordinated.
The connection structure between the inner central cylinder 4 and the two binding posts 2 is specifically as follows:
the inner central cylinder 4 is provided with a bottom wall 21, two step holes with downward openings are formed in the bottom wall 21 of the inner central cylinder 4 at intervals, the two wiring terminals 2 correspond to the two step holes one by one, and the wiring terminals 2 are inserted into the corresponding step holes from bottom to top respectively; a boss 22 matched with the step hole is arranged at the bottom of the binding post 2 in a radial protruding mode, and an inner annular sealing ring 23 is arranged between the top surface of the boss 22 and the hole bottom of the step hole in a pressing mode; and insulating glue is poured into a cavity enclosed by the two binding posts 2 and the inner central cylinder 4 to form an insulating glue layer 3.
By pouring the insulating glue, the sealing effect is achieved, and the insulating property is guaranteed. The insertion depth of the terminal 2 is easily positioned by the cooperation of the stepped hole and the boss 22, which facilitates assembly. The inner annular sealing ring 23 prevents water in the accumulated water bottom cavity 16 from upwards permeating along the part where the boss 22 is not tightly matched with the step hole, and the upper wiring terminal 2 and the insulating glue layer 3 are protected in a working environment.
A fixing block 24 extends upwards from the bottom wall 21 of the inner central cylinder 4 between the two step holes, a partition plate 25 extending into the water accumulation bottom cavity 16 extends downwards from the fixing block 24, and the partition plate 25 partitions the two wiring posts 2 below the inner central cylinder 4;
radial protrusion is equipped with big end down's annular barb 26 on the terminal 2 of step hole top, and the interval is equipped with twice or multichannel about the annular barb 26, the annular barb 26 with interior central section of thick bamboo 4 the inner wall and form interference fit between the fixed block 24.
The annular barb 26 forms interference fit with the inner wall of the inner central cylinder 4 and the fixing block 24, so that the assembling of the binding post 2 is further facilitated, and the binding post 2 is assembled more firmly. During assembly, as long as the wiring terminal 2 is inserted into the step hole from bottom to top and is tightly inserted, the wiring terminal 2 can be fixed through interference fit, and the wiring terminal 2 does not need to be held by hands or clamped and positioned by tools during operations such as pouring insulating glue. The annular barbs 26 are small at the top and big at the bottom, so that the book receiving column can be conveniently inserted into the inner central cylinder 4 from bottom to top.
A first annular sealing groove is formed in the center hole of the upper end cover 8-1 of the filter element, and a first annular sealing ring 9 is arranged between the first annular sealing groove and the outer wall of the connecting cylinder 18 in a pressing mode;
an annular sealing cylinder 27 is connected to the radial inner side of the bottom end of the cylindrical framework 14, a second annular sealing groove is formed in the outer wall of the bottom end of the outer central cylinder 6, and a second annular sealing ring 7 is arranged between the second annular sealing groove and the inner wall of the sealing cylinder 27 in a pressing mode;
a lower step 28 is arranged at the upper part of the outer central cylinder 6 in a protruding mode in the inward radial direction, an upper step 29 is arranged at the inner central cylinder 4 above the lower step 28 in a protruding mode in the outward radial direction, a third annular sealing groove is formed by the upper step 29 and the lower step 28 in a surrounding mode, a third annular sealing ring 30 is arranged in the third annular sealing groove, and the third annular sealing ring 30 is in extrusion fit with the upper step 29 and the lower step 28 in the vertical direction;
And a fifth annular sealing groove matched with the lower shell 11 is formed in the lower end cover 8-3 of the filter element, and a fifth annular sealing ring 8-4 is arranged between the fifth annular sealing groove and the inner wall of the lower shell 11 in a pressing mode. The arrangement of each annular sealing ring ensures that all the parts inside and outside the sealing device are well sealed and keep a good working state.
An annular oil purification passage 15 is formed between the cylindrical framework 14 and the outer central cylinder 6, an annular oil purification cavity 31 is defined by a connecting part 19 of the outer central cylinder 6, a connecting cylinder 18 and the inner central cylinder 4, and an oil outlet connected with the oil purification cavity 31 is arranged on the base 1; the connecting portion 19 of the outer center tube 6 has a through hole (not shown) connecting the oil purge passage 15 and the oil purge chamber 31. The oil outlet is conventional and is hidden from view and not shown; an annular water outlet 32 is arranged between the hole wall of the central hole of the lower end cover 8-3 of the filter element and the sealing cylinder 27, and the lower end of the cylindrical framework 14 is connected with the water outlet 32.
In the utility model, the terminal 2 and the insulating glue layer 3 occupy the central part of the original fuel oil passage after filtration and purification, so that the fuel oil flow path after filtration and purification is adaptively modified. The lower end of the cylindrical framework 14 is connected with a water falling port 32, and water separated from the fuel oil downwards enters the water accumulation bottom cavity 16 through the water falling port 32 along the cylindrical framework 14.
When the utility model is assembled, the binding post 2 is inserted into the corresponding stepped hole from bottom to top and is inserted to the limit position, and the inner annular sealing ring 23 is pressed tightly. After the binding post 2 is inserted in place, the barbs locate the binding post 2 through interference fit. At the moment, the external circuit is connected with the top ends of the two binding posts 2, and then the insulating glue is poured to form an insulating glue layer 3. When the filter element 8-2 is maintained and the lower shell 11 is opened, the wiring terminal 2 does not need to be disassembled, so that the convenience is realized, and the problem of unstable wiring when the wiring is re-performed after the disassembly is solved. Preferably, the upper end of the inner central cylinder is provided with a diameter-enlarged portion 33 and opens on the top surface of the base 1, and the upper end of the terminal 2 is located in the diameter-enlarged portion 33. Therefore, on one hand, the wiring terminal 2 is not exposed out of the base and is not easy to damage, and on the other hand, the diameter-expanding part is convenient to perform operations such as wiring, glue pouring and the like, and is convenient to assemble.
In operation, when the accumulated water in the accumulated water bottom cavity 16 is less, the purified fuel oil enters the accumulated water bottom cavity 16 through the water falling port 32, so that the oil is contacted with the bottom end of the wiring terminal 2. The sealed ratio oil of water is big, therefore water can accumulate gradually in ponding bottom chamber 16, when the water level reached terminal 2 bottom, can measure the change of resistance through terminal 2, reminds the driver to turn on the water for on-vehicle ECU provides the basis.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the utility model and it is intended to cover in the claims the utility model as defined in the appended claims.
Claims (6)
1. The electric signal transmission structure for the fuel filter comprises a base, wherein the base is downwards in threaded connection with a lower shell, a filter element is arranged in a cavity defined by the base and the lower shell, and the filter element is provided with a filter element upper end cover and a filter element lower end cover;
an annular oil inlet cavity is defined by the base, the filter element upper end cover and the filter element lower end cover; the upper end cover and the lower end cover of the filter element are both provided with central holes;
the base is provided with an oil inlet communicated with the oil inlet cavity; the filter element is provided with a cylindrical inner cavity, and a central hole of the upper end cover of the filter element and a central hole of the lower end cover of the filter element are both positioned on one side of the cylindrical inner cavity of the filter element;
a cylindrical framework is arranged in the cylindrical inner cavity; the radial inner side of the cylindrical framework is provided with an oil purifying passage, and the base is provided with an oil outlet communicated with the oil purifying passage;
a water accumulation bottom cavity is defined between the lower end cover of the filter element and the lower shell, and a water drain valve is arranged at the bottom of the lower shell downwards; the method is characterized in that:
a connecting cylinder is downwards arranged at the center of the top of the base, the connecting cylinder downwards penetrates through a center hole of the upper end cover of the filter element and is in sealing fit with the upper end cover of the filter element, an outer center cylinder is arranged in the cylindrical framework, a connecting part is radially extended from the top end of the outer center cylinder, and the connecting part is upwards welded with the connecting cylinder;
an inner central cylinder is arranged in the outer central cylinder, the inner central cylinder is coaxial with the outer central cylinder, and the inner central cylinder is upwards connected with the base; the inner central cylinder is connected with two binding posts through a connecting structure, the bottoms of the two binding posts downwards penetrate through a central hole of the filter element lower end cover and extend into the upper part of the water accumulation bottom cavity, and the top end of the filter element lower end cover extends out of the inner central cylinder.
2. The electrical signal transmission structure for a fuel filter of claim 1, wherein: the connection structure between the inner center tube and the two binding posts is specifically as follows:
the inner central cylinder is provided with a bottom wall, two step holes with downward openings are formed in the bottom wall of the inner central cylinder at intervals, the two binding posts are in one-to-one correspondence with the two step holes, and each binding post is inserted into the corresponding step hole from bottom to top; a boss matched with the step hole is arranged at the radial bulge of the bottom of the binding post, and an inner annular sealing ring is arranged between the top surface of the boss and the hole bottom of the step hole in a pressing mode; and insulating glue is filled in a cavity formed by the two binding posts and the inner central cylinder to form an insulating glue layer.
3. The electrical signal transmission structure for a fuel filter of claim 2, wherein:
a fixed block extends upwards from the bottom wall of the inner central cylinder between the two step holes, the fixed block extends downwards to be provided with a partition plate extending into the water accumulation bottom cavity, and the partition plate divides two binding posts below the inner central cylinder;
radial protrusion is equipped with big end down's annular barb on the terminal of step hole top, and the interval is equipped with twice or multichannel about the annular barb, the inner wall of an annular barb and interior center section of thick bamboo and form interference fit between the fixed block.
4. The electric signal transmission structure for a fuel filter according to any one of claims 1 to 3, wherein:
a first annular sealing groove is formed in the central hole of the upper end cover of the filter element, and a first annular sealing ring is arranged between the first annular sealing groove and the outer wall of the connecting cylinder in a pressing mode;
an annular sealing cylinder is connected to the radial inner side of the bottom end of the framework, a second annular sealing groove is formed in the outer wall of the bottom end of the outer central cylinder, and a second annular sealing ring is arranged between the second annular sealing groove and the inner wall of the sealing cylinder in a pressing mode;
the upper part of the outer central cylinder is provided with a lower step in an inward radial bulge manner, the inner central cylinder above the lower step is provided with an upper step in an outward radial bulge manner, the upper step and the lower step are enclosed to form a third annular sealing groove, a third annular sealing ring is arranged in the third annular sealing groove, and the third annular sealing ring is in extrusion press fit with the upper step and the lower step in the vertical direction;
the upper part of the lower shell is inserted into the base and is provided with a threaded part in threaded fit with the inner wall of the base, a fourth annular sealing groove is arranged on the lower shell below the threaded part, and a fourth annular sealing ring is arranged between the fourth annular sealing groove and the inner wall of the base in a pressing mode; and a fifth annular sealing ring is arranged between the fifth annular sealing groove and the inner wall of the lower shell in a pressing manner.
5. The electrical signal transmission structure for a fuel filter of claim 4, wherein:
an annular oil purification passage is formed between the framework and the outer central cylinder, an annular oil purification cavity is defined by the connecting part of the outer central cylinder, the connecting cylinder and the inner central cylinder, and an oil outlet connected with the oil purification cavity is arranged on the base; the connecting part of the outer central cylinder is provided with a through hole for connecting the oil purifying passage and the oil purifying cavity;
an annular water falling port is arranged between the hole wall of the central hole of the lower end cover of the filter element and the sealing barrel, and the lower end of the framework is connected with the water falling port.
6. The electrical signal transmission structure for a fuel filter of claim 5, wherein: the upper end of the inner central cylinder is provided with an expanding part and is opened on the top surface of the base, and the upper end of the binding post is positioned in the expanding part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220625911.3U CN216872302U (en) | 2022-03-22 | 2022-03-22 | Electric signal transmission structure for fuel filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220625911.3U CN216872302U (en) | 2022-03-22 | 2022-03-22 | Electric signal transmission structure for fuel filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216872302U true CN216872302U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220625911.3U Active CN216872302U (en) | 2022-03-22 | 2022-03-22 | Electric signal transmission structure for fuel filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216872302U (en) |
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2022
- 2022-03-22 CN CN202220625911.3U patent/CN216872302U/en active Active
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