CN216447032U - Wear-resisting type electricity spouts fuel pump assembly - Google Patents

Abstract

The utility model relates to a wear-resistant electric injection fuel pump assembly, which comprises an oil level component, an oil float, a float arm, a rotating support and a fixed support, wherein the rotating support is matched on the fixed support, the fixed support is arranged on an oil storage barrel, a conductive belt is arranged on the fixed support, a spring contact plate is arranged on the rotating support, at least one separation groove is arranged on the spring contact plate, the separation groove separates at least two elastic sheet units on the spring contact plate, raised contacts on the elastic sheet units are arranged in the same radial direction relative to the rotating axis of the rotating support, and the raised contacts are in matched contact with the conductive belt. It is through setting up a plurality of protruding contacts on the spring contact piece, lets the spring contact piece have the redundant design that a plurality of position and conduction band contacted, under the condition of the position of a protruding contact became invalid, especially because under the condition that the wearing and tearing became invalid, can also normally contact with the conduction band by other protruding contacts and carry out work, ensures that the sensor of oil level subassembly normally works, and life is longer relatively.

Description

Wear-resisting type electricity spouts fuel pump assembly

Technical Field

The utility model relates to an electronic fuel injection pump assembly.

Background

The electric injection fuel pump assembly is a combination of an electric injection fuel pump, an oil storage barrel 1, an oil level sensor 2, a top cover 3 and the like. The fuel pump is used for pumping out the fuel in the fuel tank to supply the fuel to the engine at rated pressure, and redundant fuel flows back to the fuel tank through the return pipe. The fuel level component is one of the core functions of the fuel pump assembly, as a component for sensing the fuel level in the fuel system, and outputs different resistance values through the change of the height of the oil float in the fuel tank, so that the vehicle can sense the fuel level. Along with the driving of the vehicle, the fuel oil is shaken in the oil tank, the oil float is also shaken up and down ceaselessly, and the contact in the oil level assembly and the conductive belt are ceaselessly rubbed to wear the service life.

SUMMERY OF THE UTILITY MODEL

In view of the technical problems in the background art, the technical problem to be solved by the utility model is to provide a wear-resistant electric injection fuel pump assembly. A spring contact piece is provided with a plurality of convex contacts to form a redundant structure, and under the condition that one convex contact fails due to abrasion, other convex contacts work normally, so that the spring contact piece is relatively more wear-resistant, has more stable performance and relatively longer service life.

In order to solve the technical problems, the utility model adopts the following technical scheme: wear-resisting type electricity spouts fuel pump assembly, including oil storage bucket, oil level subassembly and top cap, the oil level subassembly is including oil float, float arm, rotating support and fixed bolster, rotates the support configuration on the fixed bolster, and the fixed bolster installation sets up on the oil storage bucket, is equipped with the conduction band on the fixed bolster, is equipped with electrically conductive spring contact, its characterized in that on rotating the support: the spring contact plate is provided with at least one separation groove, the separation groove separates at least two elastic sheet units on the spring contact plate, each elastic sheet unit is provided with a raised contact, each raised contact is arranged in the same radial direction relative to the rotating axis of the rotating support, and each raised contact is in matched contact with the conductive belt. Wherein, through setting up a plurality of (at least two) protruding contacts on the spring contact piece, let the spring contact piece have the redundant design that a plurality of position points and conduction band contacted, under the condition that the position point of a protruding contact became invalid, especially because under the condition that the wearing and tearing became invalid, can also normally contact with the conduction band by other protruding contacts and carry out work, ensure that the sensor of oil level subassembly normally works, it is more wear-resisting relatively, the performance is more stable, life is longer relatively.

The following various optimization or supplementary explanations may be made in the above technical solutions.

For example, the conductive tape is located on a ceramic plate that is mounted on a fixed support. The technology is relatively mature, and the assembly is convenient.

Then optimizing, printing a conductive belt on the ceramic sheet; the processing is convenient, the structure is compact, and the conductive belt is relatively flat. The ceramic sheet is also printed with a first outgoing line and a second outgoing line, and the first outgoing line and the second outgoing line are used for connecting the oil level assembly out to form a circuit loop.

In addition, the conductive band is including a plurality of strips that diverge of arc resistance strip and arc arrangement, and the one end that each diverges the strip links to each other with arc resistance strip, and the other end that each diverges the strip is towards the axis of rotation of rotating support. The diverging strips will be arranged as a fan ring with spaced apart gaps to ensure mating contact with the raised contacts on the spring contact on the rotating bracket.

Wherein, the one end of arc resistive strip is connected with first line that connects out, and the spring contact is connected with the second line that connects out to connect external line and form the return circuit.

In addition, the protruding contact is made of gold-palladium alloy. The wear-resistant material has the advantages of longer service life, higher wear resistance, wear resistance times of 500 ten thousand times, more than three times longer service life than silver-copper materials, stable property and difficult oxidation.

And the laser welding of the convex contact and the spring contact piece can be optimized. The laser welding technology is mature, the welding speed is high, the deformation is small, and the resistance value is relatively more stable.

Wherein, the spring contact piece can adopt a tin bronze base material.

In addition, the rotating shaft axis of the rotating support is also provided with a torsion spring, the spiral body of the torsion spring is arranged coaxially with the rotating shaft axis, one rotating arm of the torsion spring is connected with the spring contact piece, and the other rotating arm of the torsion spring is fixedly arranged. The torsion springs are used for connection, so that the rotation of the rotating support is smoother, the travel deformation is dispersed through the spiral body of the torsion springs in the rotating process, the overall shape change is small, the connecting position of the two rotating arms of the torsion springs cannot be changed relatively, and the connection is more stable. When the circuit is connected, the conductive strip is connected with the first output line, and the rotating arm fixedly arranged on the torsion spring is connected with the second output line.

The wear-resistant electronic injection fuel pump assembly has the advantages that the spring contact piece is provided with the plurality of (at least two) raised contacts, the spring contact piece is provided with the redundancy design that the plurality of point positions are contacted with the conductive belt, and under the condition that the point position of one raised contact is invalid, particularly under the condition that the point position is worn and invalid, other raised contacts can normally contact with the conductive belt to work, a loop can be formed with an external circuit, the normal work of a sensor of an oil level component is ensured, accurate data is provided for vehicles, and the wear-resistant electronic injection fuel pump assembly is relatively more wear-resistant, more stable in performance and relatively longer in service life. Thus, the present invention provides substantial features and advances over the prior art.

Drawings

The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings.

FIG. 1 is a schematic diagram of an electric fuel injection pump assembly according to the background art of the present invention.

Fig. 2 is a schematic structural diagram in an embodiment of the present invention.

Fig. 3 is a schematic structural view of fig. 2 from another angle.

Fig. 4 is a schematic diagram of a hidden part structure in fig. 3.

Fig. 5 is a schematic diagram of a hidden part structure in fig. 4.

Fig. 6 is a schematic structural diagram of the ceramic sheet and the conductive tape thereon.

Fig. 7 is a schematic structural view of the spring contact.

Fig. 8 is a schematic structural view of fig. 7 at another angle.

Fig. 9 is a schematic structural view of fig. 8 at another angle.

In the figure: 4. an oil float; 5. a float arm; 6. rotating the bracket; 7. fixing a bracket; 8. a conductive tape; 9. a spring contact; 10. a separation tank; 11. a spring plate unit; 12. a bump contact; 13. a ceramic plate; 14. a first outgoing line; 15. a second outgoing line; 16. arc-shaped resistor strips; 17. a divergent strip; 18. a torsion spring; 19. and (7) a cover plate.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to the attached drawings, the wear-resistant electronic fuel injection pump assembly in the embodiment of the utility model comprises an oil storage barrel, an oil level component, a top cover and the like, and is a mature technology.

The oil level assembly comprises an oil float 4, a float arm 5, a rotating bracket 6 and a fixed bracket 7. The oil float 4 is connected on the rotating bracket 6 through the float arm 5, the rotating bracket 6 is arranged on the fixed bracket 7, the fixed bracket 7 is arranged on the oil storage barrel, the fixed bracket 7 is provided with a conductive belt 8, and the rotating bracket 6 is provided with a conductive spring contact piece 9. The height of the fuel oil in the oil tank changes, and the oil float 4 floats along with the lifting, so that the rotating bracket 6 is driven to rotate on the fixed bracket 7. The rotating bracket 6 rotates on the fixed bracket 7 to change the position, and the spring contact 9 also rotates along with the rotating bracket 6.

The spring contact piece 9 is provided with at least one separation groove 10, the separation groove 10 separates at least two spring piece units 11 from the spring contact piece 9, namely, the spring contact piece 9 is separated by the separation groove 10, and the whole spring contact piece 9 is separated into a plurality of spring piece units 11. Each leaf spring unit 11 has a good elasticity over the whole of the spring contact 9 and maintains a good elasticity relative to the raised contact 12 in order to maintain a mating contact with the conductive strip 8. Each spring unit 11 is provided with a raised contact 12, and each raised contact 12 is arranged in the same radial direction relative to the rotation axis of the rotating bracket 6, so that each raised contact 12 is ensured to be in the same radial direction (radial direction) of the rotation axis, and the signals of each raised contact 12 are consistent. Each raised contact 12 is in mating contact with the conductive strip 8. The spring contact piece 9 rotates, and the raised contact 12 on the spring contact piece rotates to be in contact with different positions of the conductive strip 8, so that different resistance values are obtained.

In this wear-resisting type electricity spouts fuel pump assembly, set up a plurality of (at least two) protruding contacts 12 on spring contact 9, let spring contact 9 have the redundant design of a plurality of position and the contact of conduction band 8, under the condition that the position of a protruding contact 12 became invalid, especially because under the condition that the wearing and tearing became invalid, can also work by other protruding contacts 12 normal and the contact of conduction band 8, can form the return circuit with the external line, ensure the sensor normal work of oil level subassembly, provide accurate data for the vehicle, it is relatively more wear-resisting, the performance is more stable, life is longer relatively.

The following optimization or further explanation can be made on the basis of the above embodiments, respectively.

For example, the conductive strip 8 is located on a ceramic plate 13, and the ceramic plate 13 is mounted on the fixing support 7. The technology of arranging the conductive belt 8 on the ceramic plate 13 as a base is relatively mature, and the assembly is convenient. Different specifications of the conductive strips 8 can be set according to requirements, different oil tank requirements are met, and the oil tank is more practical. The fixed bracket 7 is provided with a cover plate 19 which protects the upper conductive belt 8 and the spring contact 9 on the fixed bracket 7.

The two ends of the spring contact piece 9 can be inserted into the slots of the rotating bracket 6 for installation. The spring contact piece 9 may be a bent structure similar to a U shape, and two ends of the spring contact piece are bent and closed, for example, two ends of the spring contact piece are bent and closed to form a parallel structure in the figure.

The conductive belt 8 is printed on the ceramic sheet 13; the processing is convenient, the printing technology is mature, the structure is relatively compact, and the conductive belt 8 is relatively flat. The ceramic sheet 13 is also printed with a first outgoing line 14 and a second outgoing line 15, and the first outgoing line 14 and the second outgoing line 15 are used for connecting the oil level assembly to form a circuit loop, so that the structure is more compact, and the subsequent connection by using a lead is convenient. Of course, the first outgoing line 14 and the second outgoing line 15 may also be directly made of conductive wires without being printed on the ceramic sheet 13.

In addition, the conductive band 8 comprises an arc-shaped resistor strip 16 and a plurality of divergent strips 17 arranged in an arc shape, wherein the divergent strips 17 are emitted from a central point, and the divergent strips 17 point to the same central point. One end of each divergent strip 17 is connected to the curved resistive strip 16, and the other end of each divergent strip 17 faces the axis of rotation (which may be the location of the centre point) of the rotating bracket 6. The divergent strips 17 are arranged one by one to form fan-ring areas 20 with gaps for ensuring the matching contact with the raised contacts 12 on the spring contact 9 on the rotating bracket 6 and ensuring that each raised contact 12 arranged in the same radial direction can be smoothly contacted with the conductive belt 8 and can work and operate smoothly.

Wherein, one end of the arc-shaped resistor strip 16 is connected with the first outgoing line 14, and the spring contact 9 is connected with the second outgoing line 15 so as to be connected with an external line to form a loop. And the rotation of the spring contact piece 9 is utilized to make the convex contact 12 contact with the divergent strips 17 separated by the gap at different positions, so as to form the electric conduction and different resistance values.

Preferably, the bump contact 12 may be made of pd alloy or ag-cu material. The gold-palladium alloy has longer service life and more wear resistance, the wear resistance times are 500 ten thousand times, the service life is prolonged by more than three times compared with that of a silver-copper material, and the gold-palladium alloy has stable property and is not easy to oxidize.

It is also preferred that the raised contact 12 is laser welded to the spring contact 9. The laser welding technology is mature, the welding speed is high, the deformation is small, and the resistance value is relatively more stable.

The spring contact piece 9 may be made of a tin bronze material, or may be made of copper or steel of other materials.

In addition, a torsion spring 18 is further arranged at the axis of the rotating shaft of the rotating bracket 6, the shape of the torsion spring 18 is kept only by selecting a shape with small force, the oil float 4 runs, a spiral body of the torsion spring 18 is arranged coaxially with the axis of the rotating shaft, one rotating arm of the torsion spring 18 is connected with the spring contact plate 9, and the other rotating arm of the torsion spring 18 is fixedly arranged. The torsion spring 18 is used for connection, the connection route is stable, the rotation of the rotating bracket 6 is smoother, the travel deformation is dispersed through the spiral body (with a multi-circle structure) of the torsion spring 18 in the rotation process, the overall deformation change is small, the connection position of two rotating arms of the torsion spring 18 is relatively unchanged, and the connection is more stable. In the connection of the lines, the conductor strip 8 is connected to the first outgoing line 14, and the fixedly arranged pivot arm of the torsion spring 18 is connected to the second outgoing line 15. Of course, the wire connection can be directly adopted without the torsion spring 18 structure, but when the wire connection is directly carried out through the wire, plastic needs to be coated outside the wire, and the plastic is hardened in fuel oil to influence the rotation of the rotating bracket 6. The first outgoing line 14 and the second outgoing line 15 may be directly formed of conductive wires or may be formed of lines printed on the ceramic sheet 13.

The foregoing is a preferred embodiment of the present invention, and it should be noted that the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the scope of the utility model as set forth in the claims.

Claims (10)

1. Wear-resisting type electricity spouts fuel pump assembly, including the oil storage bucket, oil level subassembly and top cap, the oil level subassembly is including oil float (4), float arm (5), rotating bracket (6) and fixed bolster (7), oil float (4) are connected on rotating bracket (6) through float arm (5), rotating bracket (6) configuration is on fixed bolster (7), fixed bolster (7) installation sets up on the oil storage bucket, be equipped with conductive band (8) on fixed bolster (7), be equipped with electrically conductive spring contact (9) on rotating bracket (6), its characterized in that:

at least one separation groove (10) is arranged on the spring contact piece (9), the separation groove (10) separates at least two elastic piece units (11) on the spring contact piece (9), each elastic piece unit (11) is provided with a raised contact (12), each raised contact (12) is arranged in the same radial direction relative to the rotation axis of the rotating bracket (6),

each raised contact (12) is in mating contact with the conductive strip (8).

2. A wear resistant electric fuel injection pump assembly as set forth in claim 1, wherein: the conductive belt (8) is positioned on the ceramic plate (13), and the ceramic plate (13) is arranged on the fixed support (7).

3. A wear resistant electric fuel injection pump assembly as set forth in claim 2, wherein:

the conductive belt (8) is printed on the ceramic sheet (13);

the ceramic plate (13) is also printed with a first outgoing line (14) and a second outgoing line (15).

4. A wear resistant electric fuel injection pump assembly as set forth in claim 1, wherein:

the conductive band (8) comprises arc-shaped resistor strips (16) and a plurality of divergent strips (17) arranged in an arc shape, one end of each divergent strip (17) is connected with each arc-shaped resistor strip (16), and the other end of each divergent strip (17) faces to the rotating axis of the rotating support (6).

5. An abrasion resistant electric fuel injection pump assembly as defined in claim 4, wherein:

one end of the arc-shaped resistor strip (16) is connected with the first outgoing line (14), and the spring contact piece (9) is connected with the second outgoing line (15).

6. A wear resistant electric fuel injection pump assembly as set forth in claim 1, wherein: the bump contact (12) is made of gold-palladium alloy.

7. A wear resistant electric fuel injection pump assembly as set forth in claim 1, wherein: the raised contact (12) is welded with the spring contact piece (9) by laser.

8. A wear resistant electric fuel injection pump assembly as set forth in claim 1, wherein: the spring contact piece (9) is made of a tin bronze base material.

9. A wear resistant electric fuel injection pump assembly as claimed in claim 1 or 4, wherein: the rotating shaft axis of the rotating bracket (6) is also provided with a torsion spring (18), the spiral body of the torsion spring (18) is arranged coaxially with the rotating shaft axis, one rotating arm of the torsion spring (18) is connected with the spring contact piece (9), and the other rotating arm of the torsion spring (18) is fixedly arranged.

10. A wear resistant electric fuel injection pump assembly as set forth in claim 9, wherein:

the conductive strip (8) is connected with a first outgoing line (14),

the fixedly arranged rotating arm of the torsion spring (18) is connected with the second outgoing line (15).

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