CN216241016U - Direct-drawing external fuel pump assembly structure of motorcycle - Google Patents
Direct-drawing external fuel pump assembly structure of motorcycle Download PDFInfo
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- CN216241016U CN216241016U CN202122863741.0U CN202122863741U CN216241016U CN 216241016 U CN216241016 U CN 216241016U CN 202122863741 U CN202122863741 U CN 202122863741U CN 216241016 U CN216241016 U CN 216241016U
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Abstract
The utility model relates to an external fuel pump assembly structure of a direct-pumping motorcycle, which comprises a shell, an upper cover, a fuel pump and a constant pressure valve, wherein the fuel pump is provided with an oil inlet column, an oil outlet column and an exhaust port, a pump body installation cavity and a constant pressure valve installation cavity are arranged in the shell, and the upper cover is provided with an oil outlet installation shaft hole and an oil outlet pipeline and is characterized in that: be equipped with constant voltage fuel flow path between constant pressure valve installation cavity and the pump body installation cavity, the casing bottom is equipped with into oil pipe way, returns the oil pipe way, it corresponds with the gas vent position to return the oil pipe way, pump body installation cavity bottom is equipped with oil feed installation shaft hole, the oil inlet post is connected with oil inlet pipe way switch-on, the post that produces oil is connected with an oil pipe way switch-on, the upper cover is equipped with oil return channel. The utility model has the beneficial effects that: the external fuel pump assembly structure of the direct-pumping motorcycle solves the problem that fuel in the shell is too much and is easy to burst, improves the structure and reduces the burden of the whole structure.
Description
Technical Field
The utility model relates to the technical field of fuel pumps, in particular to a direct-drawing external fuel pump assembly structure of a motorcycle.
Background
The state puts forward high requirements on the emission standard of a fuel vehicle, the original motorcycle uses a carburetor to discharge pollution exceeding the standard, a fuel pump is added under the condition to solve the problem, the optimal mode is that the fuel pump is placed in an oil tank, but the original motorcycle oil tank is small in size and complex in structure, so that the fuel pump assembly cannot be realized, and the fuel pump assembly is required to be arranged externally. The existing similar products in the market are characterized in that a floater is added in the fuel pump, fuel in the fuel tank firstly enters an assembly shell to reach a certain height of the shell, the floater rises, an oil inlet path is sealed through a valve core, the structure occupies a large space, the structure is complex, and the requirement on an oil inlet stopping structure is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the direct-drawing motorcycle external fuel pump assembly structure solves the problem that the fuel in the shell is too much and is easy to burst, reduces parts, improves the structure and reduces the overall structural burden.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an external fuel pump assembly structure of formula of directly taking out motorcycle, includes inside cavity and one end open-ended casing, the casing is located self open end and can dismantle and be connected with the upper cover, be equipped with fuel pump, constant pressure valve between casing and the upper cover, the fuel pump both ends are equipped with oil inlet column and play oil column respectively, be equipped with the gas vent of distributing in oil inlet column one side on the fuel pump, be equipped with in the casing can with the pump body installation cavity of fuel pump adaptation installation, the upper cover be equipped with out oil installation shaft hole and with the play oil pipeline of an oil installation shaft hole turn-on connection, still be equipped with in the casing and distribute in pump body installation cavity one side and distribute in the constant pressure valve installation cavity of open end, its characterized in that: be equipped with constant voltage fuel flow path between constant pressure valve installation cavity and the pump body installation cavity, the casing bottom is equipped with the oil feed pipeline, the oil return pipeline of interval arrangement, oil return pipeline and pump body installation cavity turn-on connection and correspond with the gas vent position, pump body installation cavity bottom is equipped with the oil feed installation shaft hole with oil feed pipeline turn-on connection, the oil feed post extends to in the oil feed installation shaft hole and with oil feed pipeline turn-on connection, the post that produces oil extends to in the installation shaft hole that produces oil and with an oil pipe way turn-on connection, the upper cover is equipped with the oil return passageway that distributes in an oil pipe way one side and with an oil pipe way turn-on connection, oil return passageway tip extend until and with constant pressure valve installation cavity turn-on connection towards constant pressure valve installation cavity one side.
Adopt above-mentioned technical scheme, improve the structure of fuel pump assembly, utilize the fuel pump in the fuel pump assembly directly to extract the fuel in the oil tank fuel, compare in the fuel pump assembly among the prior art (the fuel gets into the casing earlier, the oil absorption is followed to the pump core in the casing), possess following advantage: firstly, the problem that the fuel in the shell is too much and is easy to burst is solved; secondly, and the fuel pump assembly of traditional form need increase the oil feed stop valve structure and be used for preventing the surplus and spill over, and above-mentioned technical scheme need not to install the oil feed stop valve, reduces spare part, alleviates overall structure burden. Furthermore, a constant pressure valve is integrated inside the shell, pressure-released fuel flows to the bottom space of the shell through a constant-pressure fuel flow channel and then is discharged through an oil return pipeline, the pressure-released fuel and the exhaust of the fuel pump share an oil outlet pipeline, and the structural space in the overall design is greatly reduced.
The external fuel pump assembly structure of the direct-drawing motorcycle can be further set as follows: the fuel pump is characterized in that an annular frame which is spliced with the bottom of the fuel pump is arranged in the pump body mounting cavity, and at least two groups of splicing holes are formed in the annular frame.
By adopting the technical scheme, the annular frame and the inserting hole are designed by utilizing the bottom space of the pump body installation cavity, so that the fuel pump fixing function can be realized, and the increase of the whole appearance size can be avoided.
The external fuel pump assembly structure of the direct-drawing motorcycle can be further set as follows: the oil inlet column and the oil inlet mounting shaft hole are in interference fit.
By adopting the technical scheme, the oil inlet column and the oil inlet mounting shaft hole are in interference sealing fit, so that the use of a sealing ring is reduced, the assembly time is reduced, and the cost of parts is reduced; the use of a seal ring structure has the risk that the seal ring cannot be installed in place and is difficult to detect.
The external fuel pump assembly structure of the direct-drawing motorcycle can be further set as follows: all be equipped with the screw hole that the position corresponds each other on upper cover and the casing, the screw hole can be dismantled and be connected with plum blossom self tapping screw.
By adopting the technical scheme, when the fuel pump assembly is in a working state, the fuel pump and the constant pressure valve are locked by adopting six plum blossom self-tapping screws under the condition of converting pressure in the system into bidirectional acting force, so that the stability of the fuel pump assembly is ensured.
The external fuel pump assembly structure of the direct-drawing motorcycle can be further set as follows: the sealing structure is characterized in that a rubber sealing element is arranged between the upper cover and the shell and comprises a transverse sealing surface and a vertical sealing surface which is integrally injection-molded with the transverse sealing surface, the transverse sealing surface is distributed between the lower end surface of the upper cover and the upper end surface of the shell, and the vertical sealing surface extends into the pump body installation cavity and is connected with the inner wall of the shell in an abutting mode.
By adopting the technical scheme, the rubber sealing element has lower requirements on the difficulty of the assembling process, and has more excellent sealing performance compared with a common O-shaped sealing ring.
The external fuel pump assembly structure of the direct-drawing motorcycle can be further set as follows: the periphery of the shell is provided with at least two groups of mounting holes which are sequentially arranged along the axis direction of the shell.
By adopting the technical scheme, the detachable connection of the fuel pump assembly and the external support can be realized, the overall size cannot be increased, and the space is reasonably utilized.
The external fuel pump assembly structure of the direct-drawing motorcycle can be further set as follows: an O-shaped sealing ring is arranged between the oil outlet column and the oil outlet mounting shaft hole.
By adopting the technical scheme, oil leakage between the oil outlet column and the oil outlet installation shaft hole is prevented.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic top view of a housing according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an embodiment of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the external fuel pump assembly structure of the direct-pumping motorcycle comprises a hollow casing 1 with an opening at one end, the casing 1 is located at the opening end of the casing and is detachably connected with an upper cover 2, a fuel pump 3 and a constant pressure valve 4 are arranged between the casing 1 and the upper cover 2, two ends of the fuel pump 3 are respectively provided with an oil inlet column 31 and an oil outlet column 32, the fuel pump is provided with exhaust ports 33 distributed on one side of the oil inlet column, the casing 1 is internally provided with a pump body installation cavity 11 which can be installed in a matching manner with the fuel pump 3, the upper cover 2 is provided with an oil outlet installation shaft hole 21 and an oil outlet pipeline 22 which is in conduction connection with the oil outlet installation shaft hole 21, the casing 1 is also internally provided with constant pressure valve installation cavities 12 distributed on one side of the pump body installation cavity 11 and distributed on the opening end, and a constant pressure flow channel 16 is arranged between the constant pressure valve installation cavity 12 and the pump body installation cavity 11, the utility model discloses a constant pressure valve installation cavity, including casing 1 bottom, oil feed pipeline 13, the oil return pipeline 14 that the interval was arranged are equipped with to the 1 bottom of casing, oil return pipeline 14 corresponds with pump body installation cavity 11 turn-on connection and with gas vent 33 position, pump body installation cavity 11 bottom is equipped with the oil feed installation shaft hole 15 with oil feed pipeline 13 turn-on connection, oil feed column 31 extends to in the oil feed installation shaft hole 15 and with oil feed pipeline 13 turn-on connection, oil outlet column 32 extends to in oil outlet installation shaft hole 21 and with oil outlet pipeline 22 turn-on connection, upper cover 2 is equipped with the oil return passageway 23 that distributes in oil outlet pipeline 22 one side and with oil outlet pipeline 22 turn-on connection, oil return passageway 23 tip extends until and with constant pressure valve installation cavity 12 turn-on connection towards constant pressure valve installation cavity 12 one side. Improve the structure of fuel pump assembly, utilize the fuel pump 3 in the fuel pump assembly directly to extract the fuel in the oil tank fuel, compare in the fuel pump assembly among the prior art (the fuel gets into casing 1 earlier, the oil absorption is followed to the pump core in the casing 1), possess following advantage: firstly, the problem that the shell 1 is easy to burst due to excessive fuel is solved; secondly, and the fuel pump assembly of traditional form need increase the oil feed stop valve structure and be used for preventing the surplus and spill over, and above-mentioned technical scheme need not to install the oil feed stop valve, reduces spare part, alleviates overall structure burden. Furthermore, the constant pressure valve 4 is integrated in the casing 1, the pressure-released fuel flows to the bottom space of the casing 1 through the constant pressure fuel flow channel 16 and is discharged through the oil return pipeline 14, the pressure-released and discharged fuel of the constant pressure valve 4 and the exhaust of the fuel pump 3 share the oil outlet pipeline 22, and the structural space in the overall design is greatly reduced.
An annular frame 17 inserted with the bottom of the fuel pump 3 is arranged in the pump body mounting cavity 11, and two groups of insertion holes 18 are formed in the annular frame 17. The annular frame 17 and the inserting hole 18 are designed by utilizing the bottom space of the pump body mounting cavity 11, so that the fixing function of the fuel pump 3 can be realized, and the increase of the overall appearance size can be avoided.
The oil inlet column 31 and the oil inlet installation shaft hole 15 are in interference fit. The assembly time is reduced, and the cost of parts is reduced; the use of a seal ring structure has the risk that the seal ring cannot be installed in place and is difficult to detect.
All be equipped with the screw hole that the position corresponds each other on upper cover 2 and the casing 1, the screw hole can be dismantled and be connected with plum blossom self tapping screw 5. When the fuel pump assembly works, under the condition that the fuel pump 3 and the constant pressure valve 4 convert bidirectional acting force due to pressure in the system, six plum blossom self-tapping screws 5 are adopted for locking to ensure the stability of the fuel pump assembly.
Be equipped with rubber seal 6 between upper cover 2 and the casing 1, rubber seal 6 includes horizontal sealing surface 61 and the vertical sealing surface 62 with horizontal sealing surface 61 integrated injection moulding, horizontal sealing surface 61 distributes between upper end face of upper cover 2 lower extreme face and casing 1, vertical sealing surface 62 extends to in the pump body installation cavity 11 and is connected with the conflict of casing 1 inner wall. The rubber sealing element 6 is low in requirement on difficulty of an assembling process, and the sealing performance is more excellent compared with that of a common O-shaped sealing ring 7.
Two sets of mounting holes 19 are arranged on the periphery of the shell 1, and the mounting holes 19 are sequentially arranged along the axis direction of the shell. Can realize fuel pump assembly and outside support's detachable connection, and whole size can not the grow, the rational utilization space.
An O-shaped sealing ring 7 is arranged between the oil outlet column 32 and the oil outlet installation shaft hole 21. Oil leakage between the oil outlet column 32 and the oil outlet mounting shaft hole 21 is prevented.
In the attached drawing, a small arrow in fig. 1 represents the direction of return fuel, and a large arrow represents the direction of fuel in a fuel tank after being sucked by a fuel pump.
The above-described embodiments have the following advantages:
different from the traditional fuel pump 3, the direct-pumping type fuel pump assembly directly pumps fuel in a fuel tank by using the fuel pump 3 in the fuel pump assembly, and solves the problem that the housing 1 is easy to burst due to excessive fuel;
the inside spare part is rare, need not to add the oil feed stop valve, reduces spare part, alleviates overall structure burden, and the rational utilization space, whole size can not the grow.
Claims (7)
1. The utility model provides an external fuel pump assembly structure of formula of directly taking out motorcycle, includes inside cavity and one end open-ended casing, the casing is located self open end and can dismantle and be connected with the upper cover, be equipped with fuel pump, constant pressure valve between casing and the upper cover, the fuel pump both ends are equipped with oil inlet column and play oil column respectively, be equipped with the gas vent of distributing in oil inlet column one side on the fuel pump, be equipped with in the casing can with the pump body installation cavity of fuel pump adaptation installation, the upper cover be equipped with out oil installation shaft hole and with the play oil pipeline of an oil installation shaft hole turn-on connection, still be equipped with in the casing and distribute in pump body installation cavity one side and distribute in the constant pressure valve installation cavity of open end, its characterized in that: be equipped with constant voltage fuel flow path between constant pressure valve installation cavity and the pump body installation cavity, the casing bottom is equipped with the oil feed pipeline, the oil return pipeline of interval arrangement, oil return pipeline and pump body installation cavity turn-on connection and correspond with the gas vent position, pump body installation cavity bottom is equipped with the oil feed installation shaft hole with oil feed pipeline turn-on connection, the oil feed post extends to in the oil feed installation shaft hole and with oil feed pipeline turn-on connection, the post that produces oil extends to in the installation shaft hole that produces oil and with an oil pipe way turn-on connection, the upper cover is equipped with the oil return passageway that distributes in an oil pipe way one side and with an oil pipe way turn-on connection, oil return passageway tip extend until and with constant pressure valve installation cavity turn-on connection towards constant pressure valve installation cavity one side.
2. The external fuel pump assembly structure of the direct-drawing motorcycle of claim 1, characterized in that: the fuel pump is characterized in that an annular frame which is spliced with the bottom of the fuel pump is arranged in the pump body mounting cavity, and at least two groups of splicing holes are formed in the annular frame.
3. The external fuel pump assembly structure of the direct-drawing motorcycle of claim 1, characterized in that: the oil inlet column and the oil inlet mounting shaft hole are in interference fit.
4. The external fuel pump assembly structure of the direct-drawing motorcycle of claim 1, characterized in that: all be equipped with the screw hole that the position corresponds each other on upper cover and the casing, the screw hole can be dismantled and be connected with plum blossom self tapping screw.
5. The direct-drawing external fuel pump assembly structure of the motorcycle as claimed in claim 1 or 4, wherein: the sealing structure is characterized in that a rubber sealing element is arranged between the upper cover and the shell and comprises a transverse sealing surface and a vertical sealing surface which is integrally injection-molded with the transverse sealing surface, the transverse sealing surface is distributed between the lower end surface of the upper cover and the upper end surface of the shell, and the vertical sealing surface extends into the pump body installation cavity and is connected with the inner wall of the shell in an abutting mode.
6. The external fuel pump assembly structure of the direct-drawing motorcycle of claim 1, characterized in that: the periphery of the shell is provided with at least two groups of mounting holes which are sequentially arranged along the axis direction of the shell.
7. The external fuel pump assembly structure of the direct-drawing motorcycle of claim 1, characterized in that: an O-shaped sealing ring is arranged between the oil outlet column and the oil outlet mounting shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122863741.0U CN216241016U (en) | 2021-11-18 | 2021-11-18 | Direct-drawing external fuel pump assembly structure of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122863741.0U CN216241016U (en) | 2021-11-18 | 2021-11-18 | Direct-drawing external fuel pump assembly structure of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216241016U true CN216241016U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122863741.0U Active CN216241016U (en) | 2021-11-18 | 2021-11-18 | Direct-drawing external fuel pump assembly structure of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216241016U (en) |
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2021
- 2021-11-18 CN CN202122863741.0U patent/CN216241016U/en active Active
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