JPS6018621Y2 - fuel pump mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a fuel pump installed in a fuel tank of an automobile.

To solve this problem, where automobile fuel sometimes gets vaporized while it is being sent from the fuel tank to the carburetor by the fuel pump, which can cause the fuel to flow into the carburetor poorly or even to be stopped. Conventionally, so-called in-tank fuel pumps, in which the fuel pump is installed inside the fuel tank, have been widely used due to the necessity of cooling the fuel pump or priming the fuel pump.

FIG. 1 shows a type of conventional mounting device for this type of fuel pump, and this mounting device includes a lid 3 of an upper opening 2 of a fuel tank 1.
and a conduit 5 fixed to the lid 3 via a bracket 4, a liquid level detection device 6 is fixed to this conduit 5, and a bracket 7 is fixed to this liquid level detection device 6. Furthermore, a fuel pump 9 is fixedly held at the lower end of the bracket 7 via a vibration isolating rubber 8.

The discharge port 10 of the fuel pump 9 and the conduit 5 were connected via a rubber tube 11.

Note that 12 is a swinging arm of the liquid level detection device, and 13 is a float attached to the tip of the swinging arm 12.

However, in such a case, the fuel pump 9
In order to install the fuel tank 1 into the fuel tank 1, mounting parts such as the bracket 7 are required, which increases the cost of parts and assembly, increases the product cost, and furthermore, the work of installing the fuel tank into the fuel tank is complicated. The drawback was that the work efficiency was extremely low.

The object of the present invention is to provide a fuel pump mounting device that can eliminate such conventional drawbacks.

The present invention will be explained in detail below based on the embodiments shown in FIGS. 2 to 4.

21 is a fuel tank, 22 is an opening thereof, and a lid 23 is placed over this opening 22.

A conduit 24 and an air vent tube 25 pass through the lid 23, and these conduit 24 and air vent tube 25 are soldered to the lid 23.

26 is a liquid level detection device, 27 is its swing arm, and 28 is a float.

Reference numeral 29 denotes a bracket formed into a U-shaped side by an upper plate 30, a side plate 31, and a lower plate 32, and the inner end of the tank of the conduit 24 is fixed to the upper plate 30 of this bracket 29 by soldering. There is.

Also, a tube 33 is integrally formed on the lower plate 32,
Around this cylinder 33, appropriate intervals are provided in the circumferential direction.
A claw piece 35 formed by the notch 34 is also provided.

Further, a rubber tube 36 is molded on the inner peripheral surface of the cylinder 33.

Reference numeral 37 denotes a fuel pump, and this fuel pump 37 is formed in a shape to fit inside the rubber tube 36, and an annular groove 38 is formed around the fuel pump 37.

Reference numeral 39 denotes a discharge port of the pump into which the conduit 24 is fitted, and an O-ring 40 is fitted into the inner peripheral surface of the discharge port 39.

Reference numeral 41 denotes a terminal that stands vertically on the upper surface of the fuel pump 37. A notch 42 and a head 43 are formed at the upper end of the terminal 41, and the bracket 29
The upper plate 30 is provided with a long hole 44 through which the terminal 41 passes.

Reference numeral 45 denotes an electrical connector provided on the fuel pump 37, and a conductor 4 drawn out from this electrical connector 45.
6 is connected to a terminal 47 attached to the lid 23.

The structure of this embodiment has been described above. Next, the connection between the conduit 24 and the fuel pump 37 will be described. The fuel pump 37 is inserted into the tube 33 of the bracket 29 that is brazed to the end of the conduit 24. , the annular groove 38 of the fuel pump 37 is positioned with the claw piece 35, and at the same time the open end of the conduit 24 is fitted into the discharge port 39, and the terminal 4
The head 43 of the bracket 29 is passed through an elongated hole 44 formed in the bracket 29.

Next, each claw piece 35 is inserted into the annular groove 3 of the fuel pump 37.
By bending in eight directions, the fuel pump 37 and the bracket 26 are integrally connected.

Further, by twisting the protruding head 43 of the terminal 41 approximately 90 degrees, the terminal 41 and the bracket 29 are brought into electrical contact, for example, to establish a ground connection.

Therefore, according to this embodiment, the connection between the conduit 24 and the fuel pump 37 is completed only by tightening the claw pieces, and the terminal 41 is grounded by only twisting, which simplifies the assembly work. This has the effect of improving productivity.

As described above, the present invention has the opening 2 provided in the fuel tank 21.
2, and the inner end is fixed to the fuel tank 21.
One end of a substantially U-shaped bracket 26 is fixed to the vicinity of the opening of the conduit 24 which opens at the lower part of the inner part, and a tube 33 is attached to the other end of the bracket 29, so that it is connected to the conduit 24.
The cylinder 33 and the conduit 24 are arranged so that their center lines are parallel to each other, and the cylinder 33 is provided with a locking pawl 35 that fits into the inner end opening. A recess 38 is provided in the body of a cylindrical fuel pump 37 having a discharge port 39, and when the fuel pump 37 is fitted into the cylinder 33 and the discharge port 39 is fitted into the inner end opening, the The fuel pump mounting device is characterized in that a recess 38 faces the locking pawl 35, and the fuel pump 37 is attached to the conduit 24 by engaging the locking pawl 35 in the recess 38. According to the invention, the conduit and the fuel pump can be connected only by caulking work, thereby greatly improving the ease of assembly.

Further, according to the present invention, since the number of parts required for assembly is small, the cost is low and the number of assembly steps is also reduced.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a conventional fuel pump mounting device, Fig. 2 is an explanatory diagram showing an embodiment of the fuel pump mounting device according to the present invention, Fig. 3 is a sectional view taken along the line ■-■, and Fig. 4 The figure is a partially cutaway side view of the main part. 21... Fuel tank, 22... Opening, 23... Lid, 24... Conduit, 25...
... Return pipe, 26 ... Liquid level detection device, 2
7... Swinging arm, 28... Float, 29... Bracket, 30... Upper plate, 31... Side plate, 32... ...Lower board, 33
...Cylinder, 34...Notch, 35...
...Claw piece, 36...Rubber tube, 37...
... Fuel pump, 38 ... Annular groove, 39
...Discharge port, 40...O ring, 41
...Terminal, 42...Notch, 43...
...Head, 44...Long hole, 45...
・Electrical connector, 46... Conductor, 47...
...Terminal.

Claims (1)

[Scope of utility model registration request] A substantially U-shaped bracket 2 is provided near the opening of a conduit 24 that penetrates and is fixed to the lid 23 of an opening 22 provided in the fuel tank 21 and whose inner end opens at the lower part of the fuel tank 21.
At the same time, a tube 33 is attached to the other end of the bracket 29 so that the tube 33 is placed on an extension of the conduit 24 and the center lines of the tube 33 and the conduit 24 are parallel to each other. A locking pawl 35 is provided on the cylinder 33, and a recess 38 is provided in the body of the fuel pump 37, which has a cylindrical shape and has a discharge port 39 that fits into the inner end opening.
When the fuel pump 37 is fitted into the fuel pump 37 and the discharge port 39 is fitted into the inner end opening, the recess 38 faces the locking pawl 35, and the locking pawl 35 is locked in the recess 38. A fuel pump mounting device characterized in that a fuel pump 37 is mounted to a conduit 24 by inserting the fuel pump 37 into the conduit 24.