JPH0341086Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fuel pump that is installed in a fuel tank of an automobile, for example, and is suitably used to pressure-feed fuel in the fuel tank to an injector or the like. In particular, the present invention relates to a fuel pump that can prevent wiring from being shot.

[Conventional technology]

Prior art fuel pumps are shown in FIGS. 3-6.

In the figure, 1 is a fuel pump, 2 is a pump body of the fuel pump 1, and the pump body 2 has a built-in motor part and a pump part (both not shown),
As shown in FIG. 5, it is designed to be installed inside the fuel tank 18. Reference numeral 3 indicates a support plate attached to the upper end of the pump body 2 via stems 4, 4, . In order to position the main body 2 in the fuel tank 18, it is placed on the opening 18A of the fuel tank 18 and fixed with screws, etc., so that the support plate 3 is attached to the fuel tank 18. 18 openings 18A
It is beginning to be covered.

Reference numeral 5 indicates a liquid level detector provided on the outer peripheral side of the pump body 2, and reference numeral 6 indicates a float attached to the liquid level detector 5 via an arm 6A. The fuel 19 is placed in a floating state and can swing upward and downward according to the displacement of the liquid level of the fuel 19. The float 6 transmits this liquid level displacement to a liquid level detector 5 via an arm 6A, and the liquid level detector 5 converts the liquid level displacement into an electrical signal and outputs it. Furthermore, the fifth
In the figure, the liquid level detector 5, float 6, etc. are omitted,
The pump main body float 2 and the like are shown in a simplified manner.

Reference numeral 7 indicates a filter on the suction side that sucks the fuel 19 in the fuel tank 18 into the pump body 2. The filter 7 is provided at a suction port (not shown) on the lower end side of the pump body 2, and The fuel 19 is sucked into the pump body 2 by the section. Reference numeral 8 indicates a remaining amount alarm, and the alarm 8 outputs an alarm signal when the amount of fuel 19 in the fuel tank 18 decreases. Further, 9 indicates a discharge pipe provided at the upper end of the pump body 1,
The discharge pipe 9 projects upwardly through the support plate 3, and discharges the fuel 19 sucked into the pump body 2 through the filter 7 to the outside. This fuel 19 is then supplied under pressure to an injector (none of which is shown) or the like via piping.

10, 10, ... are flange parts 3A on the support plate 3.
One end of each lug terminal 10 becomes a terminal 11, 11, . The tips of external wiring 13, 13, . Further, as shown in FIG. 4, on the other end side of each lug terminal 10, lug plates 14, 14, . The internal wiring 15, 1 is connected to the connection part 14A.
The distal ends of the core wires 15A of 5, . . . are connected by soldering, and the distal ends partially protrude from the soldered portion 16. Here, internal wiring 15,1
5, ... is the power supply line to the motor part of the pump body 2,
It is composed of signal lines for the liquid level detector 5 and the remaining amount alarm 8, and each internal wiring 15 is connected to each lug terminal 1.
0 to each external wiring 13. Furthermore, 17 indicates a ground wire. In addition, the 6th
The figure shows the main parts in FIG. 4 inverted and enlarged.

The fuel pump 1 according to the prior art has the above-mentioned configuration, and the pump body 2 and the like are connected to the fuel tank 1.
8 through the opening 18A in the direction of arrow A in FIG. 5 and submerged in the fuel 19,
Positioning is achieved by fixing the flange portion 3A of the support plate 3 onto the opening 18A. Then, by supplying power to the motor section of the pump main body 2 via the external wiring 13 and the internal wiring 15, the pump section is rotationally driven by the motor section, and suction is sucked into the pump main body 2 via the filter 7. fuel 1
9 is discharged from the discharge pipe 9 to the outside, and is supplied under pressure to an injector or the like via piping or the like.

[Problem that the invention attempts to solve]

By the way, in the above-mentioned conventional technology, since the filter 7, the float 6, etc. are provided on the lower end side of the pump body 2 so as to protrude in the radial direction, the pump body 2, etc. of the fuel pump 1 are inserted into the fuel tank 18 through the opening 18.
When charging through A, it is necessary to charge in the direction of arrow A while tilting the pump body 2, as illustrated in FIG. 5, to prevent the float 6, filter 7, etc. from colliding with the opening 18A. There is. On the other hand, each internal wiring 15 is connected between the lug plate 14 of each lug terminal 10, the motor side of the pump body 2, the liquid level detector 5, etc., so each internal wiring 15 is connected for convenience of connection work etc. It is necessary to let it grow long with some slack. Furthermore, as shown in FIGS. 4 and 6, the ends of the core wires 15A of each internal wiring 15 and the soldered portions 16 remain exposed at the connecting portions 14A of each lug plate 14.

Therefore, in the prior art, when the pump body 2 and the like are inserted into the fuel tank 18 in the direction of arrow A in FIG. As shown in FIG.
There may be interference with the tip of A or the soldered portion 16, and as a result, cracks or the like occur in the covering portion 15B of each internal wiring 15, causing problems such as shooting accidents and malfunctions.

The present invention was developed in view of the above-mentioned problems of the conventional technology.The present invention prevents internal wiring from interfering with the tip of the core wire or the soldering part, causing a shooting accident or malfunction. It provides fuel pumps.

[Means for solving problems]

The features of the configuration adopted by the present invention in order to solve the above-mentioned problems are that the lug plate of each lug terminal has a connection part to which the core wire tip side of each internal wiring is soldered;
A folded part is provided on the tip side of the connecting part and is folded back so as to cover the tip of the core wire and the soldering part.

[Effect]

Since the folded part provided on the lug plate of each lug terminal covers the tip of the core wire and the soldered part,
It is possible to prevent each internal wiring from interfering with the tip of the core wire or the soldering portion, and causing cracks or the like in the coating.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2. In the embodiment, the same components as those of the prior art shown in FIGS. 3 to 5 described above are given the same reference numerals, and their explanations will be omitted.

In the figure, reference numeral 21 indicates a lug terminal attached to the support plate 3. The lug terminal 21 is resin-molded with the lower end side of a pin 22A to which an external wiring 13 is soldered protruding. A substantially circular recess 24A is disposed on the lower surface of the support plate 3 so as to surround the terminal 22 disposed on the upper surface and the protruding side of the pin 22A via the packing 23. Resin holder 24 and resin holder 24
The pin 2 is fixedly disposed in the recess 24A of the pin 2
The supporting plate 3 is held between the terminal 22 by caulking the protruding end of the pin 22A, and the lug plate 25 is connected to the pin 22A. A gasket 26 is provided.

Here, the terminal 22 is formed by molding a resin material such as polyacetal, and the resin holder 24 is also formed of the same resin material. The resin holder 24 also has a recess 24A.
A pair of guide protrusions 24B, 24B are provided protrudingly spaced apart from each other by a predetermined distance in the radial direction, and each guide protrusion 24
B is designed to hold the covering portion 15B of the internal wiring 15, etc. (see FIG. 2). A core wire insertion hole 25A is provided on one side of the lug plate 25 located closer to each guide protrusion 15B.
A connecting portion 25B for soldering the tip end side of the core wire 15A of the internal wiring 15 inserted from A is bent into a substantially rectangular plate shape with a relatively long overhang dimension, and the core wire insertion hole 25A of the connecting portion 25B is bent. The tip of the core wire 15A and the soldering part 2 are on the tip side.
A folded portion 25C that is folded back in a convex curved shape is formed so as to cover the portion 7. Although only one lug terminal 21 is shown in FIG. 1, for example, four lug terminals 21 are attached to the support plate 3 in the same way as each lug terminal 10 described in the prior art. Also,
FIG. 2 shows the resin holder 24, lug plate 25, etc. shown in FIG. 1 inverted and enlarged.

The fuel pump according to this embodiment has the configuration as described above, and there is no particular difference in its basic operation from the fuel pump 1 according to the prior art.

However, in this embodiment, the lug plate 25 of each lug terminal 21 has a connecting portion 25B having a core wire insertion hole 25A.
This is because the connecting portion 25B is bent to protrude longer than the connecting portion 14A described in the prior art, and the tip side of the connecting portion 25B beyond the core wire insertion hole 25A is folded back into a convexly curved shape to form a folded portion 25C. , one end side of each internal wiring 15 is connected to each guide protrusion 2 of the resin holder 24.
4B, and connect the tip end of the core wire 15A to the connection part 2.
5B, the tip side of the core wire 15A can be bent along the inner surface of the folded part 25C, so that the tip side of the core wire 15A can be inserted into the core wire before soldering. Insertion hole 25
This can prevent accidental slipping out of A. Then, the tip end of the core wire 15A can be soldered well to the inner surface of the connecting portion 25B, and workability during soldering can be improved.

Furthermore, since the folded portion 25C of each lug plate 25 is located on the tip side of the connecting portion 25B and is folded back in a convex curve so as to cover the tip of the core wire 15A and the soldered portion 27, as shown in FIG. As exemplified,
Insert the fuel pump 1 into the fuel tank 18.
Even if each internal wiring 15 is temporarily caught between the opening 18A of the fuel tank 18 and the flange 3A of the support plate 3 when charging into the internal wiring 8, the covering portion of each internal wiring 15 15B interferes with the tip of the core wire 15A or the soldering part 27 by folding the folded part 25.
C, it is possible to prevent cracks or the like from occurring in the covering portion 15B, thereby preventing shooting accidents or malfunctions.

Further, the resin holder 24 of each lug terminal 21 is provided with a pair of guide protrusions 24B, 24B, and each guide protrusion 24B allows the covering portion 15 of the internal wiring 15 to
Since the B side is held, the internal wiring 1
It is possible to prevent the tip end side of the core wire 15A of No. 5 from being bent in the vicinity of the core wire insertion hole 25A, and accidents such as wire breakage can be eliminated.

[Effect of idea]

As detailed above, according to the present invention, the lug plate of each lug terminal is provided with a folded part that is located on the tip side of the connection part and is folded back so as to cover the tip of the core wire and the soldered part. When the pump is inserted into the fuel tank, the folded part can prevent the covered part of the internal wiring from interfering with the tip of the core wire or the soldered part, and unlike the conventional technology, the covered part of the internal wiring can be prevented from interfering with the tip of the core wire or the soldered part. It is possible to eliminate the problem of cracks, etc. occurring, which may lead to shortcut accidents. In addition, various effects can be achieved, such as improving workability when soldering the tip end of the core wire to the connecting portion of the lug plate.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
Figure 1 is a cross-sectional view showing the state in which the lug terminal is attached to the support plate, Figure 2 is a perspective view showing the resin holder, lug plate, etc. in Figure 1 inverted, and Figures 3 to 6 3 shows a prior art, FIG. 3 is a perspective view of a fuel pump, FIG. 4 is a partial perspective view in the direction of the arrow in FIG. 3, and FIG. 5 is an explanatory diagram showing a state in which the fuel pump is inserted into a fuel tank. , FIG. 6 is a perspective view showing the lug terminals etc. in FIG. 4 in an inverted state. 1...Fuel pump, 2...Pump body, 3...
Support plate, 3A...flange part, 7...filter,
9...Discharge pipe, 13...External wiring, 15...Internal wiring, 15A...Core wire, 15B...Coating part, 18
...Fuel tank, 18A...Opening, 21...Lug terminal, 22...Terminal, 22A...Pin,
23, 26...Packskin, 24...Resin holder,
25...Lug plate, 25B...Connection part, 25C...
Folded part.

Claims (1)

[Scope of utility model registration request] A pump body that incorporates a motor part and a pump part, a support plate provided on the upper end side of the pump body to position the pump body in the fuel tank, and a support plate that is attached to the support plate and that is attached to the upper surface of the support plate. It consists of a plurality of lug terminals, one end of which is located on the side, to which external wiring is connected, and the other end, which is located on the lower surface of the support plate, is provided with a lug plate that is connected to the internal wiring of the pump body. In the fuel pump, the lug plate of each lug terminal has a connection portion to which the tip end of the core wire of each internal wiring is soldered, and a connection portion located on the tip side of the connection portion so as to cover the tip of the core wire and the soldered portion. A fuel pump characterized by having a folded back part.