KR101205101B1 - Fuel supply device - Google Patents

Abstract

<Problem> A fuel supply device having good mounting property of a control circuit of a fuel pump is obtained without using a plurality of connectors.
<Method> The control circuit 15 which controls the drive current of the motor part of a fuel pump, and the pump connector 5 which is fixed to the mounting bracket 10, and supplies the electric power supplied from the vehicle side connector 200 to a control circuit. And motor terminals 19a to 19c connected to the motor portion of the fuel pump, the fuel supply device comprising: first connecting holes 15e and motor terminals 19a to connected to the connector terminals 5a to 5e of the pump connector. A second connecting hole 15f is formed to be connected to 19c, and has a printed board 15a mounted to the recess of the mounting bracket 10. The connector terminal and the motor terminal are molded integrally with the mounting bracket. In addition, the connector terminal and the motor terminal are subtracted in the same direction with respect to the first connection hole and the second connection hole of the printed board.

Description

Fuel supply device {FUEL SUPPLY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply apparatus, for example, a two-wheeled vehicle, which supplies fuel in a fuel tank to an outside of the fuel tank by a fuel pump mounted to the fuel tank and installed in the fuel tank.

BACKGROUND ART A conventional fuel supply device is known in which a driving circuit for controlling the operation of a fuel pump installed in a fuel tank is provided on an upper surface of a mounting bracket of a fuel pump, which is a lid member that closes an opening of the fuel tank. , See Patent Document 1)

Patent Document 1: Japanese Patent Application Laid-Open No. 2006-161599

Conventional fuel supply apparatus, as shown in Patent Literature 1, installs the control circuit of the fuel pump on the upper surface of the mounting bracket of the fuel pump, which is a lid member blocking the opening of the fuel tank, and supplies power to the pump connector from the electrical connector In addition, the fuel pump is controlled by a control circuit, but the connection between the control circuit and the electric connector for supplying power and the connection between the control circuit and the pump side terminal are connected using a connector. Moreover, since a some connector is used, there existed a problem that cost was high.

In addition, a liquid level detector for detecting a liquid level of a fuel other than the fuel pump, for example, a fuel in the fuel tank, is disposed in the fuel tank. However, in order to output the liquid level of the liquid level detector outside the fuel tank, There is a problem that it is necessary to use a connector, and the cost is greatly increased.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a fuel supply device having good mounting property of a control circuit of a fuel pump without using a plurality of connectors.

The fuel supply apparatus according to the present invention covers an opening formed in a fuel tank, and a mounting bracket having a recess, and a fuel mounted on the mounting bracket and disposed in the fuel tank to discharge fuel in the fuel tank to the outside of the fuel tank. A pump, a control circuit for controlling the driving current of the motor portion of the fuel pump, a pump connector fixed to the mounting bracket and supplying electric power supplied from a vehicle connector to the control circuit, and a motor portion of the fuel pump A fuel supply device having a motor terminal,

A plurality of first connection holes connected to the connector terminals of the pump connector, and a plurality of second connection holes connected to at least the motor terminals, the printed circuit board being mounted to the recess of the mounting bracket; The connector terminal of the pump connector connected to the first connection hole and the second connection hole and the motor terminal connected to the motor unit are molded integrally with the mounting bracket, and the connector terminal and the motor terminal The first connection hole and the second connection hole of the printed board are configured to be subtracted in the same direction.

In addition, the control circuit is mounted on the printed circuit board, which includes an electronic component for generating a control signal on a surface of the printed circuit board, the connector terminal of the pump connector, the first connection hole, and the motor. The terminal and the second connection hole are electrically fixed by soldering, and the electronic component, the first connection hole and the second connection hole are connected by a connecting conductor.

According to the fuel supply device of the present invention, there is provided a printed circuit board on which a control circuit composed of electronic components for controlling the drive current of the motor portion of the fuel pump is mounted, the connector terminal of the pump connector connected to the connection hole of the printed circuit board, and the motor. Since the motor terminal connected to the part is molded integrally with the mounting bracket, and the connector terminal and the motor terminal are formed in the same direction with respect to the connection hole of the printed board, the connector terminal and the motor terminal are connected to the printed board. Can be easily and reliably subtracted, and a fuel supply device having high reliability and high operability in connection between a connector terminal, a motor terminal and a control circuit can be obtained.

Other objects, features, and effects of the present invention described above will become more apparent from the following detailed description and description of the drawings.

1 is a schematic plan view showing a fuel supply device and a vehicle side connector according to Embodiment 1 of the present invention.
FIG. 2 is a longitudinal sectional view of the fuel supply device of FIG. 1. FIG.
3 is a plan view of the control circuit of FIG. 1.
Fig. 4 shows a modification of Embodiment 1 of the present invention, which is a schematic plan view of a fuel supply device in which the arrangement position of connection holes on a printed board is changed.
5 is an enlarged view of the control circuit of FIG. 4.
Fig. 6 is a schematic plan view showing a fuel supply device and a vehicle side connector in Embodiment 2 of the present invention.
7 is a plan view of the shorting member of FIG. 6.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail with reference to drawings. In addition, in each drawing, the same code | symbol shall represent the same or an equivalent part.

Embodiment Mode 1.

1 is a schematic plan view showing a fuel supply device and a vehicle side connector according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of the fuel supply device of FIG. 1, and FIG. 3 is a plan view of the control circuit of FIG.

The structure of the fuel supply apparatus 100 which concerns on Embodiment 1 of this invention is demonstrated using FIGS.

For example, in the two-wheeled vehicle, the fuel supply device 100 includes a packing 3, which is an airtight member, between the opening 2a of the fuel tank 2 that stores the fuel 1, as shown in FIG. The electric power is supplied from the vehicle side connector 200 (refer FIG. 1).

The fuel supply device 100 is formed of, for example, a thermoplastic resin such as polyacetal resin, and is supplied from a discharge pipe 4 for discharging fuel 1 in the fuel tank 2 and a vehicle side connector 200. A pump bracket configured to accommodate the mounting bracket 10 having the pump connector 5 for supplying electric power to the motor unit 30 to be described later, and the impeller 8 in the pump base 6 and the pump cover 7 ( 20) a fuel pump 50 formed of a motor unit 30, which is a so-called brushless motor, composed of a stator unit 9 and a rotor unit 11 for driving the pump unit 20, and a discharge pipe ( 4, the discharge filter 12 for filtering the fuel discharged from the fuel, the suction filter 13 for filtering the fuel 1 flowing into the pump unit 20, and the liquid level of the fuel 1 in the fuel tank 2; The level is detected by a float, and the liquid level signal of the fuel 1 is output from the pump connector 5 to the fuel level display device (not shown) through the vehicle side connector 200. Is composed of a liquid level detecting device 14.

The type of the pump in the first embodiment is a so-called turbine pump, and the impeller 8 formed in a disk shape is accommodated by the pump base 6 and the pump cover 7 so as to be fitted from both sides of the front and back sides. The center portion is engaged with the rotor portion 11 and is rotatably formed, and the C-shaped shapes are respectively formed on the outer circumferential side of the impeller 8 and the side opposite to the impeller 8 of the pump base 6 and the pump cover 7. The pump flow path of the fuel tank 2 is formed, the fuel (1) in the fuel tank (2) is filtered by the suction filter (13) coupled to the pump cover (7) and is boosted while flowing in the pump flow by the rotation of the impeller (8) It is pumped to the motor part 30 side.

The fuel pumped from the pump portion 20 to the motor portion 30 passes through a gap between the stator portion 9 and the rotor portion 11 and passes through the discharge filter 12 and the discharge pipe 4, not shown. Supplied by.

The motor part 30 employs a brushless motor. The stator part 9 has a coil wound around a stator core made of a magnetic material. The cylindrical rotor part 11 is, for example, PPS (polyphenylene). It is a plastic magnet formed in a cylindrical shape by kneading a magnetic component in a thermoplastic resin material such as sulfide), and magnetizing to form different magnetic poles alternately in the rotational direction on the outer peripheral surface side of the stator core 9 facing the stator core. It is.

In addition, the stator portion 9 is formed to generate a rotating magnetic field in the circumferential direction, and the coil of the stator portion 9 is equipped with a DC power supplied from the vehicle side connector 200 through the pump connector 5 to the mounting bracket ( The three-phase alternating current generated by conversion by the control circuit 15 arranged in the recessed portion 10a of 10 is supplied.

In the pump connector 5, connector terminals 5a to 5e are integrally molded with the mounting bracket 10, and motor terminals 19a, 19b and 19c and liquid level detection devices connected to the motor unit 30 are likewise. The liquid level signal terminals 21a and 21b of (14) are molded integrally with the mounting bracket 10.

The vehicle side connector 200 has a coupling portion 16 coupled to the pump connector 5, and the coupling portion 16 electrically connects to the connector terminals 5a to 5e of the pump connector 5. 16a-16e are arrange | positioned.

Here, the connection terminals 16a and 16b are terminals to which power is supplied, the connection terminals 16c are terminals to which electric signals are supplied based on consumption of engines (not shown), and the connection terminals 16d and 16e are liquid level detection. A terminal for outputting a liquid level signal from the device 14 to a fuel meter (not shown).

As shown in FIG. 3, the control circuit 15 includes electronic components such as an integrated circuit 15b, an electrolytic capacitor 15c, a switching element 15d, and the like that generate a control signal on the surface of the printed board 15a. A plurality of first connection holes 15e and motor terminals 19a to which the connector terminals 5a to 5e of the pump connector 5 are inserted and electrically fixed to each other by soldering are printed on the printed board 15a. , 19b and 19c and the liquid level signal terminals 21a and 21b are interpolated to form a plurality of second connection holes 15f which are electrically fixed by soldering.

In addition, a short-circuit connection is performed between the connection conductor 15g for connecting the integrated circuit 15b, the electrolytic capacitor 15c, and the switching element 15d, and the first connection hole 15e and the second connection hole 15f. For example, the liquid level signal of the liquid level detection device 14, which is a signal that does not include a signal for controlling the driving current of the motor unit 30, is transmitted from the fuel supply device 100 to the vehicle side connector 200. A print wiring, which is a pass-through conductor 15h for passing low, is arranged, and the control circuit 15 outputs the drive current of the motor unit 30 by a predetermined operation.

As described above, the liquid level signal detected in the fuel tank 2 is connected to the liquid level signal terminals 21a and 21b, the connector terminals 5d and 5e, and the connection terminals 16d and 16e of the vehicle-side connector 200. ) Can be easily sent to the fuel level display device of the vehicle without using a separate lead wire.

In addition, the connector terminals 5a to 5e are formed in a substantially L shape as shown in Fig. 2, and the motor terminals 19a, 19b and 19c, the liquid level signal terminals 21a and 21b, and the connector The terminals 5a to 5e are respectively provided at both ends of the printed board 15a, and are provided in the same direction (same surface side) with respect to the first connecting hole 15e and the second connecting hole 15f of the printed board 15a. This makes it easy to insert and print the printed board 15a, and to facilitate soldering with the first connection hole 15e and the second connection hole 15f.

Further, the fuel supply device 100 configured as described above has a potting agent 18 such as silicone resin, for example, in a state where the control circuit 15 is stored in the recess of the mounting bracket 10. ) Is charged and protected from ingress of water and dust from the outside.

Next, the operation of the fuel supply device 100 of Embodiment 1 configured as described above will be described with reference to FIGS.

First, the pump connector 5 of the fuel supply device 100 and the coupling portion 16 of the vehicle side connector 200 are fitted.

When DC power is supplied from the vehicle connector 200 to the control circuit 15 via the connection terminals 16a and 16b and the connector terminals 5a and 5b, the control circuit 15 performs three-phase alternating current by known operation. A current is generated and a three-phase alternating current is supplied to the coil of the stator section 9 through the motor terminals 19a, 19b, and 19c. By the three-phase alternating current, the stator portion 9 generates a rotating magnetic field in the circumferential direction, and the rotor portion 11 in which the other magnetic poles are alternately formed in the rotational direction on the outer circumferential surface side facing the stator core of the stator portion 9 Rotate following the rotor magnetic field.

When the rotor part 11 rotates, fuel is boosted by the rotation of the impeller 8 of the pump part 20 as it flows in the pump flow path, and is conveyed to the motor part 30 side.

The fuel pumped from the pump portion 20 to the motor portion 30 passes through a gap between the stator portion 9 and the rotor portion 11 and is supplied to an engine (not shown) through the discharge pipe 4.

Since the control circuit 15 is supplied with an electrical signal based on the consumption of the engine from the connecting terminal 16c, the rotor field generated in the coil of the stator section 9 is applied to the electrical signal based on the consumption of the engine. Rotate proportionally.

On the other hand, the liquid level of the fuel 1 in the fuel tank 2 is positioned by a float that moves the height position of the fuel 1 in the fuel tank 2 up and down by buoyancy by the liquid level detector 14. The liquid level signal of the fuel 1 is detected by a fuel meter (not shown) from the pump connector 5 through the pass-through conductor 15h disposed on the printed board 15a and through the vehicle-side connector 200. Is output.

4 and 5 show a modified example of the control circuit section of the first embodiment, in which the arrangement positions of the second connection holes 15f of the printed circuit board 15a are changed.

That is, as shown in Figs. 4 and 5, the second connection hole 15f is formed concentrically with respect to the outer shape of the mounting bracket 10 formed in the shape of a disc, and the first connection hole 15e It is arrange | positioned so that it may become substantially L shape. As a result, the connector terminals 5a to 5e integrally molded to the mounting bracket 10 at predetermined intervals, the motor terminals 19a, 19b and 19c connected to the motor unit 30, and the liquid level signal The pass-through conductor 15h is shortened by facilitating the connection between the terminals 21a and 21b and by bringing the arrangement position between the first connection hole 15e and the second connection hole 15f close.

As described above, according to the fuel supply device 100 of Embodiment 1 of the present invention, a fuel supply device that can cope without using a plurality of connectors can be provided at low cost.

In addition, it has a printed circuit board 15a which is mounted with an electronic component that is a control circuit for controlling the drive current of the motor unit and is directly coupled to the pump connector 5, and has a first connection hole 15e of the printed circuit board 15a. Of the connector terminals 5a to 5e of the pump connector 5, the motor terminals 19a to 19c connected to the motor unit 30, and the liquid level detection device 14 respectively connected to the second connection holes 15f. The liquid level signal terminals 21a and 21b are integrally molded with the mounting bracket 10, and the connector terminals 5a to 5e, the motor terminals 19a to 19c, and the liquid level signal terminals 21a and 21b. Since the first and second connecting holes 15e and 15f of the printed circuit board 15a are formed in the same direction (same side), the connector terminals 5a to 5e and the motor terminal 19a are formed. 19c) and the liquid level signal terminals 21a and 21b can be easily and reliably subtracted into the first connecting hole 15e and the second connecting hole 15f of the printed board 15a. Therefore, the connection between the connector terminals 5a to 5e, the motor terminals 19a to 19c, and the liquid level signal terminals 21a and 21b and the control circuit 15 is assured, and the operation becomes easy.

In addition, the arrangement | positioning position of the 1st connection hole 15e and the 2nd connection hole 15f shown in FIG. 4, 5 is made close to the connector terminal 5a-5e, the motor terminal 19a-19c, and There is an effect that the interpolation with the liquid level signal terminals 21a and 21b becomes easier.

Furthermore, when the second connection hole 15f is formed concentrically with respect to the mounting bracket 10, it is easy to derive the motor terminals 19a to 19c connected to the coil of the stator part 9. It works.

In addition, although the above description demonstrated the example in which the motor part 30 is a brushless motor, the motor with a brush may be sufficient.

Embodiment 2:

6 is a schematic plan view showing a fuel supply device and a vehicle side connector according to Embodiment 2 of the present invention, and FIG. 7 is a plan view of the shorting member of FIG.

In a vehicle with a large displacement, since the fuel supplied by the fuel supply device has a large capacity, the energization current is increased and the control circuit is enlarged. Therefore, it is difficult to install on the upper surface of the mounting bracket, There is a need.

The fuel supply device of Embodiment 2 is in accordance with such a request, and the fuel supply device 101 controlled by the large-sized control circuit 150 will be described below with reference to FIGS. 6 and 7.

6 and 7, the intermediate connector portion 300 is connected to the control circuit 150 for controlling the driving current of the motor portion of the fuel supply device 101 and the control circuit 150 through the lead wires 22. And a coupling portion 160 coupled to the pump connector 5 and a vehicle coupling portion 170 coupled to the vehicle side connector 200.

The short circuit member 23 is accommodated in the mounting bracket 10. The short circuit member 23 is formed of a printed board 23a, and the printed circuit board 23a has a connector terminal 5a of the pump connector 5. 5e) is subtracted and the first connecting hole 23b, which is electrically fixed by soldering, the motor terminals 19a to 19c, and the liquid level signal terminals 21a and 21b are subtracted and electrically fixed by soldering. The drive current supplied to the motor unit 30 by the short circuit connection between the connection hole 23c, the 1st connection hole 23b, and the 2nd connection hole 23c, and the liquid level signal from the liquid level detection device 14. A pass through conductor 23d, which is a printed wiring for passing the fuel supply device 101 from the fuel supply device 101 to the vehicle side connector 200, is disposed.

In addition, since the place where the intermediate connector portion 300 is mounted varies depending on the vehicle, the lead wire 22 is formed so that the length can be changed in correspondence with the place of installation.

In addition, the control circuit 150 is substantially the same as the configuration of the first embodiment described above, but in order to cope with a large current, a heat dissipating member (not shown) such as a heat sink is mounted on the switching element and enlarged.

Except as described above, it is the same as the fuel supply apparatus 100 of Embodiment 1. FIG.

Next, the operation of the fuel supply device 101 of Embodiment 2 configured as described above will be described with reference to FIGS. 6 and 7.

First, the coupling part 160 of the pump connector 5 and the intermediate connector 300 of the fuel supply device 101, the vehicle side coupling part 170 of the intermediate connector part 300 and the vehicle side connector 200 are described. Fit the coupling part (16).

When DC power is supplied from the vehicle-side connector 200 to the control circuit 150 through the connection terminals 16a and 16b and the connector terminals 5a and 5b, the control circuit 150 is three-phase by a known operation. Generate AC current.

The three-phase alternating current is connected to the stator part through the lead wire 22, the coupling part 160, the pump connector 5, the pass-through conductor 23d of the short circuit member 23, and the motor terminals 19a, 19b, and 19c. The rotor having a three-phase alternating current supplied to the coil of 9) to generate a rotating magnetic field in the circumferential direction of the stator portion 9, and alternately having a magnetic pole alternately formed in the rotational direction on the outer peripheral side facing the stator core of the stator portion 9. The part 11 rotates following a rotating magnetic field.

When the rotor part 11 rotates, fuel is boosted by the rotation of the impeller 8 of the pump part 20 as it flows in the pump flow path, and is conveyed to the motor part 30 side.

The fuel pumped from the pump portion 20 to the motor portion 30 passes through a gap between the stator portion 9 and the rotor portion 11 and is supplied to an engine (not shown) through the discharge pipe 4.

In addition, since the consumption signal of the engine is supplied to the control circuit 150 from the connecting terminal 16c, the rotor field generated in the coil of the stator section 9 rotates in proportion to the consumption signal.

On the other hand, the liquid level of the fuel 1 in the fuel tank 2 is positioned by a float that moves the height position of the fuel 1 in the fuel tank 2 up and down by buoyancy by the liquid level detector 14. The liquid level signal of the fuel 1 is detected and passed through the pass-through conductor 23d disposed on the printed circuit board 23a from the pump connector 5 through the vehicle-side connector 200 to a fuel meter (not shown). Is output.

As mentioned above, according to the fuel supply apparatus 101 of Embodiment 2 of this invention, the connection of a connector terminal, a motor terminal, and a control circuit is assured, and it is the same as that of Embodiment 1 which can perform work easily. In addition to the effect, it is possible to obtain a fuel supply device that can cope with small to large vehicles, regardless of the type of vehicle.

1: fuel 2: fuel tank
2b: opening 5: pump connector
5a ~ 5e: Connector terminal 10: Mounting bracket
15, 150: control circuit 15a, 23a: printed circuit board
15e, 23b: 1st connection hole 15f, 23c: 2nd connection hole
15h, 23d: Pass-through conductor 19a ~ 19c: Motor terminal
21a, 21b: Liquid level signal terminal 50: Fuel pump
100, 101: fuel supply device 160, 170: coupling portion
200: vehicle side connector 300: intermediate connector

Claims (9)

A mounting bracket having an opening formed in the fuel tank and having a recess, a fuel pump mounted on the mounting bracket and disposed in the fuel tank to discharge fuel in the fuel tank to the outside of the fuel tank, and a motor part of the fuel pump. A fuel supply device having a control circuit for controlling a driving current, a pump connector fixed to the mounting bracket and supplying electric power supplied from a vehicle connector to the control circuit, and a motor terminal connected to the motor portion of the fuel pump. as,
A plurality of first connection holes connected to the connector terminals of the pump connector, and a plurality of second connection holes connected to at least the motor terminals, the printed circuit board being mounted to the recess of the mounting bracket; The connector terminal of the pump connector connected to the first connection hole and the second connection hole and the motor terminal connected to the motor unit are molded integrally with the mounting bracket, and the connector terminal and the motor terminal A fuel supply apparatus characterized by being subtracted in the same direction with respect to the first connecting hole and the second connecting hole of the printed board. The method according to claim 1,
And a control circuit mounted on the printed board. The method according to claim 2,
The control circuit mounts an electronic component for generating a control signal on the surface of the printed board, and electrically connects the connector terminal of the pump connector, the first connection hole, and the motor terminal and the second connection hole by soldering. And the electronic component, and the first connecting hole and the second connecting hole are connected by a connecting conductor. The method according to any one of claims 1 to 3,
And a second connecting hole connected to the motor terminal of the printed board is formed to have an approximately L shape with the first connecting hole connected to the connector terminal. The method of claim 4,
And a second connecting hole connected to the motor terminal of the printed board is formed concentrically with respect to the outer shape of the mounting bracket formed in a disk shape. The method according to any one of claims 1 to 3,
A pass-through for passing a signal not including a control signal for controlling the drive current of the motor portion of the fuel pump together with a control signal portion for controlling the drive current of the motor portion of the fuel pump. A fuel supply device characterized in that the conductor is provided. The method according to claim 1,
When the control circuit is not mounted on the printed circuit board, the first connection hole and the second connection hole of the printed circuit board are short-circuited by a pass-through conductor, and at least the connector terminal of the pump connector is connected to the printed circuit board. A fuel supply device characterized in that the motor terminal is short-circuited. The method of claim 7,
In addition to mounting the control circuit, the control circuit includes an intermediate connector portion having a coupling portion coupled to the pump connector and coupled to the pump connector, and a vehicle coupling portion coupled to the vehicle side connector, from the mounting bracket. And a control circuit arranged at a remote position. The method according to any one of claims 1 to 3, 7 and 8,
And a potting agent is filled in the recess of the mounting bracket.

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