JP2010285929A - Control device for fuel pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect an electrical component disposed on a cover member from evaporated fuel in a fuel tank. <P>SOLUTION: A control device 32 for a fuel pump is provided with the electrical component 36 for controlling the fuel pump and is disposed in the fuel tank. The control device 32 is provided with a resin set plate 31 covering an opening part formed on the fuel tank, and the electrical component 36 is installed in a prescribed range on an upper surface of the set plate 31 at an outside of the fuel tank. A metal plate 51 which is a member having low permeability of evaporated fuel generated in the fuel tank is embedded at an inside of the set plate 31, corresponding to the prescribed range of the set plate 31. The control device 32 is provided with a connector wiring 48 connected to the electrical component 36. The connector wiring 48 is provided integrally with the metal plate 51 through a hermetic seal 52. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fuel pump used for supplying fuel in a fuel tank to an engine, and more particularly to a fuel pump control device provided in the fuel tank for controlling the fuel pump.

  Conventionally, as this type of technology, a fuel supply device described in Patent Document 1 below is known. This fuel supply device includes a fuel pump installed in a fuel tank, a resin lid member that covers an opening formed in the fuel tank, and a liquid that measures the fuel level in the fuel tank. A level gauge and a level gauge control circuit that processes a signal output from the level gauge. This level gauge control circuit is installed on the lid member. A pump control circuit for controlling the power supplied to the fuel pump is installed on the upper surface of the lid member outside the fuel tank. The liquid level meter control circuit is housed in one package together with the pump control circuit to constitute an integrated circuit. The fuel pump and the integrated circuit, and the liquid level gauge and the integrated circuit are connected by lead wires, respectively. Here, by providing the liquid level gauge control circuit and the pump control circuit on the lid member of the fuel tank, the distance from the liquid level gauge to the liquid level gauge control circuit is shortened as much as possible, and electric noise is mixed into the lead wire. I try to prevent it.

JP 2004-332582 A

  However, in the fuel supply device described in Patent Document 1, an integrated circuit constituting a liquid level gauge control circuit and a pump control circuit is provided on the upper surface of the lid member outside the fuel tank. Further, vaporized fuel may be generated in the fuel tank. For this reason, there is a possibility that the vaporized fuel may permeate through the resin lid member from the fuel tank, and the integrated circuit may suffer from the vaporized fuel that has permeated through the integrated circuit.

  Further, in the fuel supply device described in Patent Document 1, since the integrated circuit generates heat during operation, the resin lid member may be deformed due to the influence of the heat. In order to easily release this heat generation to the outside, it is conceivable to provide a heat radiating fin on the lid member. However, since the heat radiating fin itself receives heat from the integrated circuit and becomes high temperature, the heat of the heat radiating fin is transmitted to the lid member, and the lid member may be thermally affected.

  The present invention has been made in view of the above circumstances, and a first object of the invention is to control a fuel pump that can protect an electrical component provided on a lid member from vaporized fuel in a fuel tank. To provide an apparatus. A second object of the present invention is to provide a fuel pump control device capable of protecting a lid member from heat generated by an electrical component provided on the lid member.

  In order to achieve the above object, the invention according to claim 1 is a fuel pump control device provided with an electrical component for controlling the fuel pump and installed in the fuel tank, which is formed in the fuel tank. A resin lid member that closes the opening and the electrical component are installed in a predetermined range on the upper surface of the lid member outside the fuel tank, and the vaporized fuel provided in the lid member corresponding to at least the predetermined range The purpose is to provide a member having a low transmittance.

  According to the configuration of the invention described above, the resin lid member is provided in the opening of the fuel tank, and the electrical component is installed in a predetermined range on the upper surface of the lid member outside the fuel tank. Here, the vaporized fuel generated in the fuel tank may permeate the resin lid member, but the lid member is provided with a member having a small vaporized fuel permeability corresponding to at least a predetermined range. Accordingly, it is difficult for the vaporized fuel to permeate through the predetermined range of the lid member, and it is difficult for the electrical component to receive the vaporized fuel.

  To achieve the above object, the invention according to claim 2 is the invention according to claim 1, further comprising a wiring connected to the electrical component, wherein the wiring is integrated with a member having a low vaporized fuel permeability. The purpose is to be provided.

  According to the configuration of the invention described above, in addition to the operation of the invention described in claim 1, it is possible to handle a member having a low vaporized fuel permeability and a wiring together as one component.

  To achieve the above object, according to a third aspect of the present invention, in the first or second aspect of the present invention, the member having a low vaporized fuel permeability is formed of a metal plate, a PPS resin, or a PBT resin. Intended to be

  According to the structure of the said invention, the effect | action equivalent to the invention of Claim 1 or 2 is acquired by forming a member with small vaporization fuel permeability | transmittance from a metal plate, PPS resin, or PBT resin.

  In order to achieve the above object, a fourth aspect of the present invention is a fuel pump control device provided with an electrical component for controlling a fuel pump and installed in a fuel tank, which is formed in the fuel tank. A resin lid member that closes the opening, the electrical component being installed on the upper surface of the lid member outside the fuel tank, and a heat radiating member that is supported by the lid member and emits heat from the electrical component to the outside It is intended that a heat insulating material interposed between the lid member and the heat radiating member is provided.

  According to the configuration of the invention, since the electric member is installed in the lid member provided at the opening of the fuel tank and the heat radiating member is supported, the heat radiating member externally generates heat from the electric component during operation of the electric component. At this time, the heat radiating member may be in a high temperature state. However, since the heat insulating material is interposed between the lid member and the heat radiating member, the heat of the heat radiating member is hardly transmitted to the lid member.

  In order to achieve the above object, the invention according to claim 5 is a control device for a fuel pump which is provided with an electric part for controlling the fuel pump and which is installed in the fuel tank, and is formed in the fuel tank. The lid member made of resin that closes the opening and the electrical component are installed in a predetermined range on the upper surface of the lid member outside the fuel tank, and at least between the lid member and the electrical component corresponding to the predetermined range. And a metal plate interposed between the two.

  According to the configuration of the invention, the electrical component is installed in a predetermined range on the upper surface of the lid member provided in the opening of the fuel tank. In addition, a metal plate is interposed between the lid member and the electrical component corresponding to at least a predetermined range. Therefore, the metal plate functions as a heat radiating member that dissipates heat generated by the electrical component.

  In order to achieve the above object, the invention described in claim 6 is the invention described in claim 5, further comprising a heat dissipating member for releasing heat generated by the electrical component to the outside, and electrically connecting the metal plate and the heat dissipating member. The purpose is to be grounded.

  According to the configuration of the invention, in addition to the operation of the invention according to claim 5, the heat radiating member receives heat generated by the electric component and releases it to the outside. Further, since the metal plate and the heat radiating member are electrically grounded, the electromagnetic noise generated from the electric component is released without being radiated to the outside.

  In order to achieve the above object, an invention according to claim 7 is a control device for a fuel pump provided with an electrical part for controlling the fuel pump and installed in the fuel tank, which is formed at the bottom of the fuel tank. A lid member that closes the opened opening, a heat radiation container disposed inside the fuel tank, and at least a part of the electrical components are disposed in the heat radiation container and provided on the lid member. The purpose is to have

  According to the configuration of the invention, the heat radiating container provided on the lid member at the bottom of the fuel tank is disposed inside the fuel tank, and at least a part of the electrical components is disposed in the heat radiating container. Therefore, there is no possibility that vaporized fuel generated in the fuel tank permeates through the lid member and the heat radiation container at the bottom of the fuel tank. Also, the heat generated by the electrical components is released to the fuel through the heat dissipation container.

  In order to achieve the above object, the invention according to claim 8 is the invention according to claim 7, wherein the heat dissipation container is formed of metal.

  According to the configuration of the above invention, in addition to the action of the invention according to claim 7, since the heat radiating container is formed of metal, the heat of the heat radiating container is easily transmitted to the fuel.

  According to the first aspect of the present invention, the electrical component provided on the lid member can be protected from the vaporized fuel in the fuel tank.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, it is possible to facilitate an integral molding operation for the member having a low vaporized fuel permeability and the wiring cover member.

  According to the invention described in claim 3, by forming a member having a low vaporized fuel permeability from a metal plate, PPS resin, or PBT resin, an effect equivalent to that of the invention described in claim 1 or 2 can be obtained. it can.

  According to the invention described in claim 4, it is possible to prevent the lid member from being thermally deteriorated and thermally deformed by the heat of the heat radiating member.

  According to the fifth aspect of the present invention, the cooling performance of the electrical component can be improved by the metal plate.

  According to the invention described in claim 6, in addition to the effect of the invention described in claim 5, radiation noise from the electrical component can be reduced.

  According to the seventh aspect of the present invention, it is possible to protect the electrical component provided on the lid member from the vaporized fuel in the fuel tank. In addition, the electric parts can be effectively cooled by the fuel.

  According to the eighth aspect of the invention, the cooling effect of the electrical component can be enhanced with respect to the effect of the seventh aspect of the invention.

Sectional drawing which concerns on 1st Embodiment and shows a fuel tank etc. provided in the inside of a fuel tank. Similarly, sectional drawing which shows a part of set plate containing a control apparatus. Similarly, sectional drawing which shows a part of set plate of the state which removed the radiation fin and the electrical component from the state of FIG. Sectional drawing which similarly shows the connector wiring and the hermetic seal assembled | attached integrally with the metal plate. Sectional drawing which concerns on 2nd Embodiment and shows a part of set plate containing a control apparatus. Similarly, sectional drawing which shows a part of set plate of the state which removed the radiation fin and the electrical component from the state of FIG. Similarly, sectional drawing which shows the mold resin board material which carried out the primary molding of the connector wiring. The top view which concerns on 3rd Embodiment and shows a set plate. Similarly, the top view which shows a radiation fin. Similarly, the front view which shows a radiation fin. Similarly, the top view which shows the set plate of the state which removed the radiation fin etc. from the state of FIG. FIG. 12 is a cross-sectional view taken along line 12-12 of FIG. 8 showing the set plate. Similarly, sectional drawing which shows a control module. Similarly, sectional drawing which decomposes | disassembles and shows a control module. Similarly, it is sectional drawing which shows only the connection part of a set plate and a radiation fin about the part enclosed with the chain-line ellipse 15 of FIG. Sectional drawing which concerns on 4th Embodiment and shows only the connection part of a set plate and a radiation fin. Sectional drawing which concerns on 5th Embodiment and shows schematic structures, such as a fuel tank and a control apparatus.

[First Embodiment]
Hereinafter, a first embodiment of a fuel pump control device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a sectional view showing a fuel tank 21 and a fuel pump 22 provided therein. In the resin fuel tank 21 mounted on the automobile, a high-pressure filter cover 24 that is a separate body from the tank body 23 is provided. The high pressure filter cover 24 is provided with an electric fuel pump 22, fuel passages 25 a and 25 b, a pressure regulator 26, and a high pressure fuel filter 27. A fuel filter 28 is provided at the suction portion of the fuel pump 22.

  When the fuel pump 22 operates, the fuel in the fuel tank 21 is sucked into the fuel pump 22 via the fuel filter 28. The sucked fuel flows through the fuel passage 25a, the high-pressure fuel filter 27, and the fuel passage 25b, is regulated by the pressure regulator 26, and is discharged from the outlet 29. The discharged fuel is supplied to the engine through a fuel line (not shown).

  The fuel pump 22 includes a motor 30 serving as a drive source and a pump unit 22 a driven by the motor 30. The pump unit 22 a is provided with a rotating member (not shown) such as a fin that is rotated by the rotor of the motor 30.

  A resin set plate 31 that closes the upper opening 23 a of the tank body 23 is detachably attached to the upper portion of the high-pressure filter cover 24. This set play and 31 correspond to the “lid member” of the present invention. The set plate 31 is provided with a fuel pump control device (hereinafter simply referred to as “control device”) 32 for controlling the fuel pump 22. The fuel pump 22 is electrically connected to the control device 32.

  FIG. 2 is a sectional view showing a part of the set plate 31 including the control device 32. FIG. 3 is a sectional view showing a part of the set plate 31 in a state where the heat radiation fins 38 and the electrical components 36 are removed from the state of FIG. As shown in FIG. 2, the control device 32 includes a housing 33 provided integrally with the set plate 31, an external connector 34 and an internal connector 35 formed integrally with the set plate 31 adjacent to the housing 33, and a housing. 33 and an electrical component 36 accommodated in 33. The housing 33 and the external connector 34 are provided on the upper surface side of the set plate 31. The internal connector 35 is provided directly below the housing 33 on the lower surface side of the set plate 31.

  As shown in FIGS. 2 and 3, the housing 33 includes a box-shaped housing body 37 that opens upward, and heat radiating fins 38 that are provided so as to close the opening of the housing body 37. The heat radiating fins 38 correspond to the “heat radiating member” of the present invention. The housing body 37 is resin-molded integrally with the set plate 31, and the heat radiating fins 38 are made of metal. The heat radiating fins 38 are welded to the housing body 37.

  As shown in FIG. 2, the electrical component 36 includes an integrated circuit (hereinafter referred to as “IC”) 42 provided above and below a substrate 41 and a plurality of electronic components 43, 44, 45 such as capacitors and coils. Including. Substrate wiring 46 is provided on the substrate 41. The IC 42 and the electronic components 43 to 45 are electrically connected to the substrate wiring 46. A connection terminal 46 a extending downward is provided at one end of the substrate wiring 46. The electrical component 36 is mounted in the housing body 37 by fixing the substrate 41 to the housing body 37 via a bracket (not shown). In this attached state, the IC 42 is connected to the radiation fin 38 via the radiation pad 47.

  As shown in FIGS. 2 and 3, the external connector 34 has a box shape smaller than the housing main body 37 and opens upward. In the external connector 34, a part of the plurality of external terminals 48a connected to the external wiring is exposed. These external terminals 48 a are constituted by a part of connector wiring 48 extending from the external connector 34 to the housing body 37. That is, the plurality of connector wires 48 are arranged from the external connector 34 to the housing main body 37, and include an external terminal 48a, an extension 48b extending from the external terminal 48a, and an internal terminal 48c extending vertically at one end of the extension 48b, 48d. In this embodiment, the external connector 34, the internal connector 35, and the housing body 37 are resin-molded integrally with the set plate 31. Further, the plurality of connector wires 48 are insert-molded with respect to the set plate 31, that is, integrally molded. The internal terminal 48c extending upward is exposed in the housing body 37. The connection terminal 46a of the board wiring 46 is electrically connected to the internal terminal 48c. The internal terminal 48 d extending downward is disposed in the internal connector 35 so as to be exposed. A pump wiring 49 (see FIG. 1) from the fuel pump 22 is electrically connected to the internal terminal 48d.

  As shown in FIGS. 2 and 3, a metal plate 51 is embedded in the set plate 31. In addition, the internal terminal 48 d of the connector wiring 48 is fixed to the metal plate 51 through a hermetic seal 52. That is, the hermetic seal 52 is assembled so as to penetrate the metal plate 51. An internal terminal 48 d is attached so as to penetrate the hermetic seal 52. Thereby, the connector wiring 48, the metal plate 51, and the hermetic seal 52 are integrally provided. FIG. 4 is a cross-sectional view of the connector wiring 48 and the hermetic seal 52 that are integrally assembled with the metal plate 51.

Here, as shown in FIG. 2, the electrical component 36 is installed in a predetermined range on the upper surface of the set plate 31 outside the fuel tank 21, that is, a range in the housing body 37. The metal plate 51 is embedded in the set plate 31 so as to occupy a region including the entire range in the housing main body 37 and almost the entire range in the external connector 34. The metal plate 51 corresponds to a “member with a small vaporized fuel permeability” of the present invention. That is, the metal plate 51 is formed of a material that is less permeable to vaporized fuel than the resin that is the material of the set plate 31. Here, when the material of the set plate 31 is “POM resin”, the vaporized fuel permeability is “40 (g / m ² · day · atm)”. On the other hand, when the material of the metal plate 51 is “SPCC”, the vaporized fuel permeability is “0 (g / m ² · day · atm)”. From this numerical value, it can be seen that the metal plate 51 does not transmit vaporized fuel at all.

  In this embodiment, the metal plate 51 is insert-molded, that is, integrally formed with the set plate 31 together with the connector wiring 48 and the hermetic seal 52. Here, as shown in FIG. 4, the connector wiring 48 is integrally assembled to the metal plate 51 via the hermetic seal 52 in advance. After that, when the set plate 31 is resin-molded, the assembly shown in FIG. 4 is molded only once with the resin for molding the set plate 31. Thereby, the above-described assembly is insert-molded with respect to the set plate 31.

  According to the fuel pump control device 32 described above, the resin set plate 31 is attached to the opening 23 a of the fuel tank 21, and a predetermined range on the upper surface side of the set plate 31 outside the fuel tank 21, that is, An electrical component 36 is installed in a range in the housing main body 37. Here, part of the vaporized fuel generated in the fuel tank 21 may permeate the resin set plate 31, but the set plate 31 has a predetermined range including the range in the housing body 37. A metal plate 51, which is a member having a small vaporized fuel permeability, is provided so as to occupy. Accordingly, the vaporized fuel generated in the fuel tank 21 does not easily pass through the portion of the housing body 37 of the set plate 31, and the electric component 36 is unlikely to receive the vaporized fuel. For this reason, the electrical component 36 provided on the set plate 31 can be protected from the vaporized fuel in the fuel tank 21. As a result, it is not necessary to use a particularly fuel-resistant component as the electrical component 36, a versatile component can be used, and the degree of freedom in circuit design can be improved. Further, it is not necessary to apply a protective material (botting, coating, etc.) to the electrical component 36, and the manufacturing process can be simplified accordingly.

  In this embodiment, a plurality of connector wires 48 connected to the electrical component 36 are integrally provided with the metal plate 51 via the hermetic seal 52. Therefore, the metal plate 51, which is a member having a low vaporized fuel permeability, and the plurality of connector wires 48 can be handled together as one component. For this reason, it is possible to facilitate the insert molding operation of the metal plate 51 and the plurality of connector wires 48 on the set plate 31, that is, the integral molding operation. Further, since the connector wiring 48 is attached to the metal plate 51 through the hermetic seal 52, it is possible to prevent the vaporized fuel from leaking through the connection portion between the connector wiring 48 and the metal plate 51 while ensuring insulation. .

[Second Embodiment]
Next, a fuel pump control apparatus according to a second embodiment of the present invention will be described in detail with reference to the drawings.

  In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described.

  FIG. 5 is a sectional view showing a part of the set plate 31 including the control device 32. FIG. 6 is a cross-sectional view showing a part of the set plate in a state where the radiation fins 38 and the electrical components 36 are removed from the state of FIG. FIG. 7 is a sectional view showing a molded resin plate 53 in which the connector wiring 48 is primarily molded. This embodiment is different from the first embodiment in the configuration of “a member having a small vaporized fuel permeability”.

That is, as shown in FIGS. 5 and 6, in this embodiment, the internal connector 35 formed integrally with the lower side of the set plate 31 is disposed directly below the external connector 34. Further, instead of the metal plate 51, a mold resin plate material 53 is embedded in the set plate 31 as a “member with a low vaporized fuel permeability” of the present invention. As with the metal plate 51 of the first embodiment, the mold resin plate material 53 is provided inside the set plate 31 so as to occupy a region including the entire range in the housing body 37 and almost the entire range in the external connector 34. It is done. As the mold resin plate material 53, “PPS resin”, which is a material that hardly allows vaporized fuel to pass therethrough, compared to the resin that is the material of the set plate 31 is used. Here, when the material of the set plate 31 is “POM resin”, the vaporized fuel permeability is “40 (g / m ² · day · atm)”. On the other hand, when the material of the mold resin plate material 53 is “PPS resin”, the vaporized fuel permeability is “0.002 (g / m ² · day · atm)”. From this numerical value, it can be seen that the molded resin plate material 53 hardly transmits vaporized fuel. As the mold resin plate material 53, “PBT resin” can be used instead of “PPS resin”. The vaporized fuel permeability of “PBT resin” is “6 (g / m ² · day · atm)”.

  In this embodiment, as shown in FIGS. 5 and 6, in the connector wiring 48, an internal terminal 48d is integrally formed directly below the external terminal 48a. The connector wiring 48 is insert-molded with respect to the molded resin plate material 53. In this molded state, the internal terminal 48 d of the connector wiring 48 is exposed and arranged in the internal connector 35.

  In this embodiment, the mold resin plate material 53 is insert-molded with respect to the set plate 31 together with the connector wiring 48. That is, as shown in FIG. 7, the connector wiring 48 is insert-molded in advance with respect to the molded resin plate material 53. Thereafter, when the set plate 31 is resin-molded, the insert molding shown in FIG. 7 is insert-molded with respect to the set plate 31. That is, when the molded resin plate material 53 is resin-molded, the connector wiring 48 is first molded on the resin plate material 53 as shown in FIG. Thereafter, when the set plate 31 is resin-molded, the mold resin plate material 53 and the connector wiring 48 are secondarily molded on the plate 31 as shown in FIG.

  According to the fuel pump control device 32 described above, the set plate 31 is provided with the mold resin plate material 53 which is a member having a low vaporized fuel permeability so as to occupy a predetermined range including the inside of the housing body 37. It is done. Therefore, the vaporized fuel generated in the fuel tank 21 is difficult to permeate into the housing main body 37 of the set plate 31, and the electric component 36 is difficult to be covered with the vaporized fuel. For this reason, the electrical component 36 provided on the upper surface side of the set plate 31 can be protected from the vaporized fuel in the fuel tank 21. As a result, it is not necessary to use a fuel-resistant component as the electrical component 36, a versatile component can be used, and the degree of freedom in circuit design can be improved. Further, it is not necessary to apply a protective material (botting, coating, etc.) to the electrical component 36, and the manufacturing process can be simplified accordingly.

  In this embodiment, since the plurality of connector wires 48 connected to the electrical component 36 are provided integrally with the mold resin plate material 53, the mold resin plate material 53 which is a member having a low vaporized fuel permeability and the plurality of connector wires. 48 can be handled together as one part. For this reason, it is possible to facilitate the insert molding operation of the mold resin plate material 53 and the plurality of connector wires 48 with respect to the set plate 31, that is, the integral molding operation.

[Third Embodiment]
Next, a third embodiment of the fuel pump control device of the present invention will be described in detail with reference to the drawings.

  FIG. 8 shows the set plate 31 in a plan view. In FIG. 9, the radiation fin 38 is shown with a top view. In FIG. 10, the radiation fin 38 is shown with a front view. FIG. 11 is a plan view showing the set plate in a state in which the radiation fins 38 and the like are removed from the state shown in FIG. FIG. 12 shows the set plate 31 by a sectional view taken along line 12-12 of FIG. This embodiment is different from the first and second embodiments in the configuration of the radiation fins 38 and the electrical components 36 and the assembly structure thereof.

  As shown in FIGS. 8 to 10, the heat radiating fins 38 have a box shape and a polygonal shape in plan view. A plurality of brackets 40 a are formed on the outer peripheral edge of the lower end of the radiating fin 38. The radiating fins 38 are fixed to the upper surface of the set plate 31 via the brackets 40a. A plurality of fin portions 39a are formed on the upper surface of the heat radiating fins 38 substantially in parallel. As shown in FIG. 11, a housing body 37 corresponding to the outer peripheral shape of the radiation fin 38 is formed on the upper surface of the set plate 31. The heat dissipating fins 38 are aligned on the housing main body 37 so that both the members 37 and 38 are joined. As shown in FIGS. 8 and 11, an external connector 34 and a plurality of pipe joints 56, 57, 57 and the like are integrally formed on the upper surface of the set plate 31.

  As shown in FIG. 12, in this embodiment, a control module 61 constituting the control device 32 is attached corresponding to the housing body 37 of the set plate 31. FIG. 13 shows the control module 61 in a sectional view. FIG. 14 is an exploded cross-sectional view of the control module 61. The control module 61 includes a heat radiation fin 38, a mold IC 62, a circuit bus bar 63, a plurality of coils 64, a metal plate 65, and a plurality of screws 67. In this embodiment, the mold IC 62, the circuit bus bar 63, and the plurality of coils 64 constitute the electrical component 36.

  A plurality of screw receiving shafts 39c for tightening the screws 67 project downward from the inner bottom surface of the radiation fin 38. The mold IC 62 is a resin-molded IC. The circuit bus bar 63 is composed of parts such as a substrate and wiring (not shown), and includes a connection terminal 63 a connected to the mold IC 62 and a connection terminal 63 b connected to the internal terminal 48 c of the connector wiring 48. The coil 64 is provided with a connection terminal 64 a connected to the mold IC 62. The metal plate 65 is bent into a substantially groove shape, and flanges 65a are formed at both left and right ends.

  Then, as shown in FIG. 14, the heat radiating fins 38, the mold IC 62, the circuit bus bar 63, the coil 64, and the metal plate 65 are vertically aligned and overlapped, and the screw 67 penetrates the flange 65 a of the metal plate 65 and the circuit bus bar 63. Then, the mold IC 62, the circuit bus bar 63, and the coil 64 are pressed against the heat radiation fin 38 by the metal plate 65 and are held by being tightened to the screw receiving shaft 39c, as shown in FIG. 61 is obtained.

  Thereafter, the heat radiating fins 38 of the control module 61 are fixed to the upper surface of the set plate 31 as shown in FIG. In this fixed state, the metal plate 65 is interposed between the set plate 31 and the electrical component 36. Further, the radiation fin 38 and the metal plate 65 are electrically connected to each other and connected to the connection terminal 63 b of the circuit bus bar 63. The connection terminal 63 b is connected to the internal terminal 48 c of the connector wiring 48. The connector wiring 48 has an external terminal 48a connected to the external wiring. Thereby, the radiation fin 38 and the metal plate 65 are electrically grounded. Further, the heat generated by the electrical component 36 is transmitted to the heat radiating fins 38 and released to the outside.

  Here, the structure of the radiation fin 38 will be described. As shown in FIGS. 10 and 12 to 14, in this embodiment, the heat radiating fins 38 are composed of two parts, an upper metal fin 39 and a lower heat insulating frame 40. The metal fin 38 includes a plurality of fin portions 39a on the upper surface and has a bottomed box shape. The heat insulating frame 40 is formed in a frame shape from a heat resistant resin. In this embodiment, the metal fin 39 corresponds to the “heat radiating member” of the present invention, and the heat insulating frame 40 corresponds to the “heat insulating material” of the present invention. FIG. 15 is a cross-sectional view showing only the connection portion between the set plate 31 and the heat radiating fins 38 in the portion surrounded by the chain line ellipse 15 in FIG. In this embodiment, the metal fin 39 includes a skirt portion 39b extending downward. The skirt portion 39 b is formed slightly closer to the inside than the outer peripheral edge of the metal fin 39. In this embodiment, the plurality of brackets 40 a described above are formed at the lower end of the heat insulating frame 40. A step portion 40 b is formed inside the heat insulating frame 40. The skirt portion 39b of the metal fin 39 is fitted and joined to the step portion 40b. Then, by inserting the pin 31a protruding on the set plate 31 into the hole 40c formed in the bracket 40a and thermally deforming the head of the pin 31a as shown in FIGS. The heat radiating fins 38 are fixed to the set plate 31.

  In the radiating fin 38 of this embodiment, the metal fin 39 is heated by receiving heat from the electrical component 36. Therefore, the metal fin 39 is fixed to the set plate 31 via the heat insulating frame 40, so that the metal fin 39 The heat transmitted to 39 is not directly transmitted to the set plate 31. Further, the heat insulating frame 40 has heat resistance sufficient to withstand the heat of the metal fins 39.

  According to the fuel pump control device 32 of this embodiment described above, the resin set plate 31 is provided in the opening 23 a of the fuel tank 21. An electrical component 36 is installed in the housing body 37 on the upper surface of the set plate 31 outside the fuel tank 21. In this embodiment, the control module 61 constituting the control device 32 is fixed corresponding to the housing body 37 of the set plate 31. Further, a metal plate 65 provided in the control module 61 is interposed between the set plate 31 and the electrical component 36. Here, during operation of the electrical component 36, the metal fins 39 of the heat radiating fins 38 dissipate heat generated by the electrical component 36. Further, the heat transmitted to the metal plate 65 is released to the outside from the metal fin 39 via the screw 67 and the screw receiving shaft 39c. That is, the metal plate 65 also functions as a heat radiating member that dissipates heat generated by the electrical component 36. In this sense, the cooling performance of the electrical component 36 can be improved by the metal plate 65. Further, as described above, the mold IC 62, the circuit bus bar 63, and the coil 64 can be held by the metal plate 65 with respect to the heat radiating fins 38, and both holding and heat dissipation can be performed.

  In this embodiment, since the metal plate 65 and the metal fin 39 are electrically grounded, the electromagnetic noise generated from the electric component 36 is released without being radiated to the outside. For this reason, radiation noise from the electrical component 36 can be reduced without using components such as an electrical filter.

  In this embodiment, during operation of the electrical component 36, the metal fins 39 constituting the heat radiation fin 38 may receive a heat generated by the electrical component 36 and become a high temperature state. However, the heat radiating fins 38 are constituted by the metal fins 39 and the heat insulating frame 40, and the heat insulating frame 40 is interposed between the metal fins 39 and the set plate 31 that are in a high temperature state. Is difficult to be transmitted to the set plate 31. For this reason, it is possible to prevent the set plate 31 from being thermally deteriorated and deformed due to the heat of the metal fins 39. In particular, the connection portion between the set plate 31 and the metal fin 39 can be prevented from being thermally deteriorated and thermally deformed.

[Fourth Embodiment]
Next, a fourth embodiment in which the fuel pump control device of the present invention is embodied will be described in detail with reference to the drawings.

  FIG. 16 shows only a connection portion between the set plate 31 and the radiation fin 38 by a cross-sectional view similar to FIG. This embodiment is different from the third embodiment in terms of the assembly structure of the set plate 31 and the heat radiating fins 38. That is, as shown in FIG. 16, in this embodiment, the entire radiation fin 38 is made of metal, and a heat insulation collar 71 is provided between the bracket 38 a of the radiation fin 38 and the pin 31 a of the set plate 31. The heat insulating collar 71 is formed of a heat resistant resin and is attached to the outer periphery of the pin 31a before being inserted into the hole 38b of the bracket 38a. Thereafter, the holes 38b of the bracket 38a are inserted into the outer periphery of the heat insulating collar 71, and the heads of the pins 31a are thermally deformed, so that the radiating fins 38 are connected and fixed to the set plate 31 as shown in FIG. The In this embodiment, the heat radiating fins 38 correspond to the “heat radiating member” of the present invention, and the heat insulating collar 71 corresponds to the “heat insulating material” of the present invention.

  Therefore, also in this embodiment, since the heat insulating collar 71 is interposed between the heat radiating fins 38 and the set plate 31 that are in a high temperature state, the heat transmitted to the heat radiating fins 38 is difficult to be transmitted to the set plate 31. For this reason, it is possible to prevent the set plate 31 from being thermally deteriorated and thermally deformed by the heat of the radiation fins 38. In particular, it is possible to prevent the connection portion between the set plate 31 and the radiation fin 38 from being thermally deteriorated and thermally deformed.

[Fifth Embodiment]
Next, a fifth embodiment of the fuel pump control device according to the present invention will be described in detail with reference to the drawings.

  FIG. 17 shows a schematic configuration of the fuel tank 21, the control device 32, and the like in a sectional view. In this embodiment, the configuration differs from the above embodiments in that the set plate 31 and the control device 32 are provided at the bottom of the fuel tank 21. That is, an opening 21a is formed at the bottom of the fuel tank 21, and the set plate 31 is fixed so as to liquid-tightly close the opening 21a. The set plate 31 is integrally provided with a heat radiating container 76 arranged in the fuel of the fuel tank 21. In this embodiment, the heat dissipation container 76 is made of metal. The set plate 31 is provided with a housing 77 that protrudes downward. The insides of the heat radiating container 76 and the housing 77 are in communication with each other to form one housing space 78. The electrical component 36 is disposed in the housing space 78, and the electrical component 36 is attached to the set plate 31. The electrical component 36 includes a substrate 79 and a plurality of electronic components 80 to 82 attached to the substrate 79. A part of the substrate 79 and the electronic components 80 to 82 are disposed in the heat dissipation container 76. The electrical component 36 is electrically connected to a fuel pump (not shown) disposed in the fuel tank 21 and controls the fuel pump.

  Therefore, according to this embodiment, the heat radiating container 76 provided on the set plate 31 at the bottom of the fuel tank 21 is disposed inside the fuel tank 21, and a part of the electrical component 36 is disposed in the heat radiating container 76. Is done. Therefore, the vaporized fuel generated in the fuel tank 21 does not pass through the set plate 31 and the heat radiation container 76 at the bottom of the fuel tank 21. For this reason, the electrical component 36 provided on the set plate 31 can be protected from the vaporized fuel in the fuel tank 21.

  In this embodiment, the heat generated by the electrical component 36 is released to the fuel via the heat radiating container 76. For this reason, the heat of the electrical component 36 can be effectively cooled by the fuel without using a dedicated cooler such as a heat radiating fin. Further, since the heat radiating container 76 is made of metal, the heat of the heat radiating container 76 is easily transmitted to the fuel. In this sense, the cooling effect of the electrical component 36 can be enhanced.

  The present invention is not limited to the above-described embodiments, and a part of the configuration can be changed as appropriate without departing from the spirit of the invention.

  In the first and second embodiments, the metal plate 51 and the mold resin plate material 53 are embedded in the set plate 31 so as to occupy a part of the set plate 31, but the metal plate and the mold resin plate material are provided. May be embedded in the set plate so as to occupy the entire range of the set plate.

  The present invention can be used in a fuel supply device for supplying fuel in a fuel tank to an engine.

21 Fuel tank 22 Fuel pump 21b Opening 23a Opening 31 Set plate (lid member)
32 Control device 36 Electrical component 37 Housing body 38 Heat radiation fin (heat radiation member)
39 Metal Fin (Heat Dissipation Member)
40 Insulation frame (insulation)
51 Metal plate (member with low vaporized fuel permeability)
53 Mold resin plate material (member with low vaporized fuel permeability)
61 Control module 65 Metal plate 71 Insulation collar (insulation)
76 Heat dissipation container

Claims (8)

An electric component for controlling the fuel pump, the fuel pump control device installed in the fuel tank,
A resin lid member for closing the opening formed in the fuel tank;
The electrical component is installed in a predetermined range on the upper surface of the lid member outside the fuel tank;
A fuel pump control device comprising: a member having a low vaporized fuel permeability, which is provided in the lid member corresponding to at least the predetermined range. The fuel pump control device according to claim 1, further comprising a wiring connected to the electrical component, wherein the wiring is provided integrally with the member having a low vaporized fuel permeability. The fuel pump control device according to claim 1 or 2, wherein the member having a low vaporized fuel permeability is formed of a metal plate, PPS resin, or PBT resin. An electric component for controlling the fuel pump, the fuel pump control device installed in the fuel tank,
A resin lid member for closing the opening formed in the fuel tank;
The electrical component is installed on the upper surface of the lid member outside the fuel tank;
A heat dissipating member that is supported by the lid member and discharges heat of the electric component to the outside;
A fuel pump control device comprising a heat insulating material interposed between the lid member and the heat radiating member. An electric component for controlling the fuel pump, the fuel pump control device installed in the fuel tank,
A resin lid member for closing the opening formed in the fuel tank;
The electrical component is installed in a predetermined range on the upper surface of the lid member outside the fuel tank;
A fuel pump control device comprising: a metal plate interposed between the lid member and the electrical component corresponding to at least the predetermined range. The fuel pump control device according to claim 5, further comprising a heat radiating member that releases heat generated by the electrical component to the outside, wherein the metal plate and the heat radiating member are electrically grounded. An electric component for controlling the fuel pump, the fuel pump control device installed in the fuel tank,
A lid member for closing an opening formed at the bottom of the fuel tank;
A heat radiating container provided on the lid member and disposed inside the fuel tank;
A fuel pump control device comprising: at least a part of the electrical component disposed in the heat dissipation container and provided on the lid member. The fuel pump control device according to claim 7, wherein the heat radiation container is made of metal.

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