JP2011157902A - Connector and fuel supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector and a fuel supply device enhancing the work efficiency of connection between terminals and harnesses while inhibiting increase of the size. <P>SOLUTION: The connector 20 is provided on a holder part 4, which includes a cylindrical upper cup 5 containing a fuel pump arranged in a fuel tank, for supplying electric power of an external power source to the fuel pump. The connector includes a connector housing to which an external connector connected to the external power source can be fitted, a plurality of harness connection parts 51 into which the respective other ends of the plurality of harnesses connected at one ends to the fuel pump can be inserted separately, and the plurality of terminals extending from the connector housing to the harness connection parts 51. The respective harness connection parts 51 are arranged in parallel along the outer peripheral face of the upper cup 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connector and a fuel supply device using the connector.

  In general, a so-called in-tank system is often used as a fuel supply device for motorcycles and four-wheeled vehicles, in which a fuel pump is disposed in the fuel tank and the fuel supply device is immersed in the fuel in the fuel tank. . A fuel pump of this type of fuel supply apparatus includes a pump unit that pumps fuel into a lower portion and pumps the fuel to an internal combustion engine (engine). In addition, a motor unit for driving the pump unit is provided on the top of the pump unit.

  The fuel pump configured as described above is fixed in the fuel tank through a flange unit fixed to the wall surface of the fuel tank and an upper cup (cylinder portion). The upper cup is formed in a cylindrical shape so as to contain the fuel pump, and supports the fuel pump in cooperation with the flange unit. The flange unit is formed so as to be fixed to the wall surface of the fuel tank.

  Then, the fuel pump is inserted from the fuel mounting hole formed in the fuel tank, and the flange unit is fixed to the wall surface of the fuel tank in a state where the fuel mounting hole is closed by the flange unit. As a result, the fuel pump can be arranged in the fuel tank. That is, the flange unit constitutes a part of the wall surface of the fuel tank, and separates the inside and the outside of the fuel tank.

The flange unit is provided with a power connector that communicates with the inside and outside of the fuel tank. This power supply connector is for supplying an external power supply to the fuel pump, and has a plurality of terminals. An external connector connected to an external power source is fitted outside the fuel tank of the power connector. On the other hand, a harness connected to the fuel pump is connected inside the fuel tank of the power connector.
The plurality of terminals of the power connector are formed in the same shape, and are arranged, for example, in a row corresponding to the external connector.

Here, a case part (seal part) for sealing between the flange unit and the fuel mounting hole of the fuel tank is integrally molded. The case portion is formed in a cylindrical shape so as to surround the upper cup and the power connector, thereby preventing fuel from leaking from the opening of the fuel tank.
That is, the inside of the power connector of the fuel tank is disposed between the case portion and the upper cup (see, for example, Patent Document 1).

JP 2009-52427 A

However, in the above-described conventional technology, since the arrangement space of the power connector is limited, it is difficult to increase the interval between the terminals, and the connection work space between the terminals and the harness is reduced. For this reason, there exists a subject that connection work efficiency will fall.
In addition, it is conceivable to enlarge the inner side of the fuel tank of the power connector and to set a large interval between the terminals, but the case portion is also enlarged. For this reason, there exists a subject that a fuel supply apparatus will enlarge.

  Therefore, the present invention has been made in view of the above-described circumstances, and provides a connector and a fuel supply device that can improve the connection work efficiency between a terminal and a harness while suppressing an increase in size. It is.

  In order to solve the above problems, the invention described in claim 1 is provided in a holder portion including a cylindrical tube portion that encloses a fuel pump disposed in a fuel tank, and an external power source is connected to the fuel pump. In the connector for supplying the electric power, a connector housing to which an external connector connected to the external power source can be fitted, and the other ends of the plurality of harnesses connected at one end to the fuel pump are separately provided. A plurality of insertable harness connecting portions and a plurality of terminals extending from the connector housing to the harness connecting portion, each harness connecting portion being arranged in parallel along the outer peripheral surface of the cylindrical portion It is characterized by being.

  By comprising in this way, the space | interval between adjacent harness connection parts can be set large, without ensuring a big space around a cylinder part. For this reason, it becomes possible to improve the connection work efficiency of a plurality of terminals and a plurality of harnesses, suppressing the enlargement of a cylinder part.

  The invention described in claim 2 is characterized in that at least four harness connecting portions are provided and at least three adjacent harness connecting portions are arranged on the same straight line.

  By comprising in this way, it becomes possible to set the same wiring distance from the harness connection part to the connector housing among at least three harness connection parts. For this reason, the terminal corresponding to the at least 3 harness connection part arrange | positioned on the same straight line among several terminals can be made into the same shape. Therefore, an increase in the number of parts of the connector can be suppressed.

  According to a third aspect of the present invention, there is provided a holder portion provided with the connector according to the first or second aspect, and the fuel tank disposed in the fuel tank while being supported by the holder portion, and pumping up the fuel in the fuel tank. A fuel pump for pressure-feeding to the internal combustion engine, and the holder portion includes a flange unit fixed to a wall surface of the fuel tank, and the cylindrical portion integrated with the flange unit. The fuel supply device is characterized in that a seal portion is provided which is formed in a ring shape so as to surround the periphery of the cylinder portion and seals between the flange unit and the fuel tank.

  By comprising in this way, the space | interval between adjacent harness connection parts can be set large, setting the space between a cylinder part and a seal part space-saving. For this reason, it is possible to improve the connection work efficiency between the plurality of terminals and the plurality of harnesses while reducing the size of the fuel supply device.

  According to the present invention, it is possible to set a large interval between adjacent harness connecting portions without securing a large space around the cylindrical portion. For this reason, it becomes possible to improve the connection work efficiency of a plurality of terminals and a plurality of harnesses, suppressing the enlargement of a cylinder part.

It is a side view of the fuel supply apparatus in the embodiment of the present invention. It is a perspective view of the holder part in the embodiment of the present invention. FIG. 3 is a view as seen from an arrow A in FIG. 2. It is a perspective view of the connector terminal in the embodiment of the present invention.

(Fuel supply device)
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the fuel supply device 1.
As shown in the figure, the fuel supply device 1 is disposed so as to be immersed in a fuel tank 2 such as an automobile or a motorcycle, and pumps up the fuel in the fuel tank 2 and pumps it to an internal combustion engine (not shown). Is. In the following, in order to simplify the description, the direction outside the fuel tank 2 of the fuel supply device 1 (upper side in FIG. 1) is simply the upper side, and the direction inside the fuel tank 2 (lower side in FIG. 1) is simply Sometimes referred to as the lower side.

  The fuel supply device 1 is attached so as to be inserted from an opening 2b formed in the upper wall 2a of the fuel tank 2. The fuel supply device 1 is attached to the upper cup 5, a fuel pump 3 disposed in the fuel tank 2, a holder portion 4 having an upper cup 5 attached to the upper wall 2 a of the fuel tank 2 and containing the fuel pump 3. The lower cup 6 that supports the fuel pump 3 and the filter unit 7 disposed below the lower cup 6, that is, on the suction side of the fuel pump 3 are provided.

(Fuel pump)
The fuel pump 3 has a pump part P for pumping up fuel and a motor part M for driving the pump part P provided on the upper part of the pump part P.
The pump part P is constituted by an impeller (not shown) or the like, and a suction pipe (not shown) is erected downward in the axial direction at the lower part. In addition, a deaeration hole (not shown) for discharging the vapor generated in the pump part P is formed in the lower part of the pump part P.

The fuel pumped up by the pump part P flows into the motor part M. A discharge port 10 for discharging the fuel pumped up by the pump unit P is formed in the upper part of the motor unit M. The discharge port 10 communicates with a fuel take-out pipe 18 described later provided in the holder portion 4. The fuel pumped up by the fuel pump 3 is pumped to the internal combustion engine via the fuel take-out pipe 18.
A terminal 8 is erected on the upper part of the motor part M, and one end of a plurality of harnesses 9 is connected thereto. The other end of the harness 9 is connected to a later-described connector 11 that is integrally formed with the holder portion 4.

(Holder part)
FIG. 2 is a perspective view of the holder portion 4, and FIG. 3 is a view taken in the direction of arrow A in FIG. 2.
As shown in FIGS. 1 to 3, the holder portion 4 is made of resin and has a flange unit 12 attached to the upper wall 2 a of the fuel tank 2 and an upper cup 5 containing the fuel pump 3. However, both 12 and 5 are integrated by welding or the like.
Note that the flange unit 12 and the upper cup 5 may not be welded to each other, and the both 12 and 5 may be integrally formed.

The flange unit 12 is integrally formed with a bottomed cylindrical unit main body 13 and an outer flange portion 14 provided on the peripheral wall 13 a of the unit main body 13 and closing the opening 2 b formed in the upper wall 2 a of the fuel tank 2. It is molded.
The outer flange portion 14 is formed with four notches 15 in the circumferential direction. Bolts, screws or the like are inserted into the notches 15 and the flange unit 12 is fixed from above using a female screw portion or a screw hole provided on the upper wall 2a of the fuel tank 2. . That is, the upper side of the flange unit 12 above the outer flange portion 14 is exposed to the outside of the fuel tank 2.

A cylindrical seal portion 16 is formed on the lower surface side of the outer flange portion 14 so as to fit in the opening 2 b of the fuel tank 2. An O-ring groove (not shown) is formed on the outer peripheral surface of the seal portion 16, and an O-ring 59 is attached thereto. Thereby, the sealing performance between the fuel tank 2 and the holder part 4 is ensured.
Further, four guide portions 17 having a circular arc shape in plan view in the axial direction are formed around the seal portion 16, and a seal member is formed in a space surrounded by the seal portion 16, the guide portion 17, and the upper wall 2 a of the fuel tank 2. (Not shown) can be arranged.

  A fuel take-out pipe 18 is provided on the upper portion of the unit main body 13. The fuel take-out pipe 18 is for pumping the fuel pumped from the fuel pump 3 to the internal combustion engine, and has a tip connected to an internal combustion engine (not shown).

A connecting pipe 40 capable of fitting the discharge port 10 is provided at the bottom 13 b of the unit body 13 at a position corresponding to the discharge port 10 of the fuel pump 3. The inside of the connection pipe 40 is communicated with the fuel take-out pipe 18 so that the fuel discharged from the discharge port 10 is pumped to an internal combustion engine (not shown) via the connection pipe 40 and the fuel take-out pipe 18. ing.
The connecting pipe 40 houses a check valve 19 (see FIG. 1). The check valve 19 is for preventing the reverse flow of fuel pumped from the discharge port 10 to the fuel take-out pipe 18.

Furthermore, a connector 20 is integrally formed on the upper side of the unit main body 13 on the opposite side of the fuel take-out pipe 18 with the center in the radial direction as the center.
The connector 20 is for supplying electric power from an external power source (not shown) to the motor part M of the fuel pump 3, and a connector housing 21 and a later-described harness connecting part provided on the outer peripheral surface of the upper cup 5. 51 and a connector terminal 22 that extends from the connector housing 21 to the harness connecting portion 51 and is insert-molded in the unit main body 13.

The connector housing 21 is formed so that an external connector 23 connected to an external power source (not shown) can be fitted therein, and has a receiving port 21 a that can receive the external connector 23. For example, an existing general-purpose connector in which five female terminals are arranged in a row is used as the external connector 23.
The connector terminal 22 includes five terminals 24 to 26 (see FIG. 4) so as to correspond to the external connector 23.

  An upper cup 5 that encloses the fuel pump 3 is provided on the lower peripheral edge of the unit body 13, that is, on the lower surface side of the outer flange portion 14 and on the radially inner side of the seal portion 16. The upper cup 5 is formed in a substantially cylindrical shape so as to cover the outer peripheral surface of the fuel pump 3.

  An opening window 52 is formed on the unit main body 13 side of the upper cup 5. The other ends of the plurality of harnesses 9 connected to the fuel pump 3 are drawn out radially outward through the opening window 52. On the inner peripheral edge of the opening window 52, a hook 49 is integrally formed at a portion from which the harness 9 is pulled out. The harness 9 is clamped by the hook 49 and the inner peripheral edge of the opening window 52, and the vibration of the harness 9 in the vicinity of the opening window 52 is suppressed.

Five harness connecting portions 51 are provided between the outer peripheral surface of the upper cup 5 and the seal portion 16 so as to extend along the axial direction at positions avoiding the opening window 52. The harness connecting portion 51 is for connecting the connector terminal 22 and the other ends of the plurality of harnesses 9 whose one ends are connected to the fuel pump 3 and is formed in a substantially cylindrical shape.
The harness connecting portion 51 is in a state where the upper end is joined to the outer flange portion 14, and has an opening 51a at the lower end. The other end of the harness 9 is inserted into the opening 51a, and the connector terminal 22 and the other end of the harness 9 are connected to each other inside the harness connecting portion 51. Thereby, an external power source (not shown) and the fuel pump 3 are electrically connected.

  Here, as shown in detail in FIG. 3, the five harness connecting portions 51 are arranged in parallel along the outer peripheral surface of the upper cup 5. For this reason, compared with the case where the five harness connecting portions 51 are arranged on the same straight line (see the two-dot chain line in FIG. 3), the interval K1 between the upper cup 5 and the seal portion 16 can be set small. The seal portion 16 can be reduced in diameter accordingly. In addition, a sufficient distance K2 between the adjacent harness connecting portions 51 can be secured while reducing the diameter of the seal portion 16.

Further, the five harness connection portions 51 have three central positions on the same straight line P1, and the two harness connection portions 51 located on the outermost sides are more radially than the straight line P1. It is in the state located inside (upper cup 5 side).
Here, since the connector terminal 22 is extended from the connector housing 21 to the harness connection part 51, the connector terminal 22 corresponding to the harness connection part 51 arrange | positioned on the same straight line P1 is made into the same shape. be able to. That is, since the distances from the connector housing 21 to the harness connecting portions 51, 51, 51 arranged on the same straight line P1 are the same, the connector terminals 22 routed between them can have the same shape. It becomes possible.

This will be described in more detail with reference to FIG. FIG. 4 is a perspective view of the connector terminal 22.
As shown in FIGS. 2 and 4, the connector terminal 22 includes five terminals 24 to 26 including three first terminals 24, 24, 24, one second terminal 25, and one third terminal 26. It is configured.
The five terminals 24 to 26 are arranged in parallel along the direction orthogonal to the insertion direction of the external connector 23 and along the extending direction (horizontal direction) of the outer flange portion 14.

  The 1st terminal 24 is a terminal routed by the three harness connection parts 51 arrange | positioned on the same straight line P1. The first terminal 24 has an input side terminal portion 27 extending in the horizontal direction in the receiving port 21 a of the connector housing 21, and an output side extending from the proximal end side of the input side terminal portion 27 into the harness connection portion 51. The terminal portion 28 is integrally formed by press working or the like.

The input-side terminal portion 27 is a so-called male terminal formed in a substantially prismatic shape, and has a tapered portion 27a formed at the tip so that the female terminal of the external connector 23 can be received smoothly.
The output-side terminal portion 28 is a so-called male terminal formed in a substantially flat plate shape, to which a female terminal (not shown) attached to the other end of the harness 9 is connected. A tapered portion 28a is formed at the distal end of the output side terminal portion 28 so that a female terminal (not shown) of the harness 9 can be smoothly inserted. Further, on both side edges of the output side terminal part 28 on the input side terminal part 24a side (base end side), a retaining part 28b that functions as a retaining part after insert molding is formed.

  The second terminal 25 and the third terminal 26 are formed so that the input side terminal portions 31 and 34 extending into the receiving port 21 a of the connector housing 21 are located between the input side terminal portions 27 of the three first terminals 24. Has been. Similarly to the input side terminal portion 27 of the first terminal 24, the input side terminal portion 31 of the second terminal 25 and the input side terminal portion 35 of the third terminal 26 are also formed in a substantially prismatic shape. Further, the input side terminal portion 31 of the second terminal 25 has a tapered portion 31a formed at the tip thereof, and the input side terminal portion 35 of the third terminal 26 has a tapered portion 35a formed at the tip thereof. .

  Further, the length L1 of the input side terminal portion 31 of the second terminal 25 and the input side terminal portion 35 of the third terminal 26 are set longer than the length L2 of the input side terminal portion 27 of the first terminal 24. Yes. Then, the base end of the input side terminal portion 31 of the second terminal 25 and the base end of the input side terminal portion 35 of the third terminal 26 are bent and extended so as to be orthogonal to the longitudinal direction of the input side terminal portions 31 and 35. The connecting portions 33 and 36 are formed integrally.

  Output side terminal portions 32 and 35 formed in a crank shape are bent and extended at the ends of the connecting portions 33 and 36, respectively. In this way, by forming the second terminal 25 and the third terminal 26, the output terminal of the second terminal 25 in the two harness connecting portions 51 located on the outermost side among the five harness connecting portions 51. The part 32 and the output side terminal part 35 of the third terminal 26 can be extended.

The output terminal portion 32 of the second terminal 25 has a tapered portion 32a at the tip, and the output terminal portion 35 of the third terminal 26 has a tapered portion 35a at the tip. .
Further, the output-side terminal portion 32 of the second terminal 25 is formed with a retaining portion 32b that functions as a retaining member after insert molding on both side edges on the proximal end side, and the output-side terminal of the third terminal 26. The part 35 is formed with retaining parts 35b that function as retaining parts after insert molding on both side edges on the proximal end side.

With such a configuration, the input side terminal portions 27, 31, 34 are arranged in a row so as to correspond to the external connector 23, and the interval K3 between adjacent terminal portions can be connected to the external connector 23. Set to size.
On the other hand, each output side terminal unit 28, 32, 35 can set the interval K 4 between the adjacent terminal units so as to correspond to the arrangement interval K 2 of the five harness connecting units 51.

Note that the input side terminal portions 27, 31, and 34 are arranged in the order from the left in FIG. 4 as the first terminal 24, the second terminal, the first terminal 24, the third terminal 24, and the first terminal 24. On the other hand, the output side terminal portions 28, 32, and 35 are the second terminal 25, the first terminal 24, the first terminal 24, the first terminal 24, and the third terminal 24 in the order from the left in FIG.
Thus, since the arrangement order of the input side terminal units 27, 31, and 34 and the output side terminal units 28, 32, and 35 is different, it is desirable to stamp each output side terminal unit 28, 32, and 35. Accordingly, it can be easily confirmed that the female terminals (not shown) of the harness 9 are connected to the predetermined output side terminal portions 28, 32, and 35. That is, the workability for checking the connection of the harness 9 can be improved.

  Further, a grommet 53 is attached to each opening 51 a of each harness connection portion 51. That is, the other end of the harness 9 is inserted into each harness connecting portion 51 through the grommet 53. The opening 51a of each harness connecting portion 51 is closed by a grommet 53 so that fuel and dust can be prevented from entering the harness connecting portion 51.

  Here, the five harness connecting portions 51 are arranged in parallel along the outer peripheral surface of the upper cup 5, and the interval K2 between the adjacent harness connecting portions 51 is sufficiently secured. The diameter of 51 can be set large. For this reason, the grommet 53 attached to the harness connecting portion 51 can be enlarged, the sealing performance can be improved, and the mounting workability of the grommet 53 can be improved.

  Further, among the five harness connection portions 51, the harness projections 54 formed on the outermost side in the arrangement direction of the harness connection portions 51 are formed on the harness connection portion 51 located on the outermost side. This engagement convex part 54 is for snap-fit fixing a cover 55 described later. The cover 55 is for suppressing the fluttering of each harness 9 routed on the outer peripheral surface side of the upper cup 5 when the vehicle travels.

  The cover 55 is formed so as to cover most of the portion corresponding to the lower part of each harness connection portion 51 and the outer vicinity of the two outermost harness connection portions 51 and 51 on the outer peripheral surface of the upper cup 5. The cover main body 56 and a locking piece 57 extending in the vertical direction at a portion corresponding to the engaging projection 54 are formed, and the cover main body 56 and the locking piece 57 are integrally formed. .

  The locking piece 57 of the cover 55 is formed so as to be elastically deformable, and an engagement hole 58 that can be engaged with the engagement protrusion 54 is formed at a position corresponding to the engagement protrusion 54. As a result, the locking piece 57 of the cover 55 and the engagement convex portion 54 of the harness connection portion 51 snap fit, and the cover 55 is fixed to the harness connection portion 51.

The opening 5a formed in the lower part of the upper cup 5 is formed with four locking pieces 61 extending downward in the axial direction. The locking piece 61 is for attaching the lower cup 6 to the upper cup 5 by snap-fitting to the lower cup 6. The locking piece 61 is formed such that its tip can be elastically deformed toward the outside in the radial direction, that is, in the direction of expanding the diameter.
Each of the four locking pieces 61 is formed with an engagement hole 62. The engagement hole 62 is for engaging with an engagement convex portion 63 of the lower cup 6 described later, and for attaching the lower cup 6 to the upper cup 5.

(Lower cup)
As shown in FIG. 1, a lower cup 6 is attached to the lower side of the upper cup 5. The lower cup 6 is formed in a bottomed cylindrical shape and holds the lower part of the fuel pump 3. The outer diameter of the lower cup 6 is set so that the fuel pump 3 can be fitted in the peripheral wall 6 a of the lower cup 6 and the lower cup 6 can be fitted in the upper cup 5.

  That is, the lower cup 6 is attached so as to fit into the inner surface side of the upper cup 5, and holds the fuel pump 3 integrally with the upper cup 5. On the peripheral wall 6 a of the lower cup 6, an engagement convex portion 63 that can be engaged with the engagement hole 62 is formed at a position corresponding to the engagement hole 62 of the upper cup 5. The engaging piece 61 of the upper cup 5 snap-fits to the engaging convex portion 63.

Further, a gauge mounting portion 64 is erected on the peripheral wall 6a of the lower cup 6 near the bottom wall 6b. The gauge attaching portion 64 is for attaching a sender gauge (not shown), and includes an arm portion 64a protruding from the peripheral wall 6a of the lower cup 6 and an attachment seating surface 64b integrally formed at the tip of the arm portion 64a. ing.
The sender gauge is a detection device for detecting the remaining amount of fuel in the fuel tank 2.

  Further, the lower wall 6b of the lower cup 6 is formed with an opening (not shown) into which a suction pipe (not shown) projecting from the lower portion of the fuel pump 3 can be inserted. The suction pipe protrudes downward. The filter unit 7 is attached to a suction pipe (not shown).

(Filter unit)
The filter unit 7 has a suction filter 71 and a suction port 72 for connecting a suction pipe (not shown) of the fuel pump 3.
The suction filter 71 includes a filter medium 71a and a welded portion 71b formed by welding the outer peripheral edge of the filter medium 71a.

The filter medium 71a is formed, for example, by folding a mesh-like nylon cloth into a bag shape. The welding part 71b is for preventing that the filter medium 71a formed in the bag shape opens.
The suction port 72 is formed in a substantially cylindrical shape, and is formed so as to be fitted on the suction pipe 43 of the pump portion P. Then, the fuel pumped up through the filter unit 7 flows into the pump part P through the suction port 72 and the suction pipe (not shown) of the fuel pump 3.

  When the motor unit M of the fuel pump 3 is driven under such a configuration, the fuel in the fuel tank 2 is sucked from the suction port 72 in a state of being filtered through the suction filter 71. Then, the fuel passes through the discharge port 10 and the check valve 19 through the motor unit M, and is pumped from the fuel take-out pipe 18 to an internal combustion engine (not shown).

(effect)
Therefore, according to the above-described embodiment, the five harness connection portions 51 for connecting the connector terminal 22 connected to the external connector 23 and the harness 9 connected to the fuel pump 3 are connected to the upper cup 5. Arranged in parallel along the outer peripheral surface, the interval K2 between the adjacent harness connecting portions 51 can be set large while setting the interval K1 between the upper cup 5 and the seal portion 16 small.
For this reason, the insertion space of the harness 9 to each harness connection part 51 is made without expanding the diameter of the seal part 16 formed in a cylindrical shape so as to surround the periphery of the upper cup 5 and the harness connection part 51. It can be secured greatly. Accordingly, it is possible to improve the connection workability between the connector terminal 22 and the harness 9 while suppressing the enlargement of the upper cup 5.

Moreover, since the five harness connection parts 51 are arranged so that the three center positions among them are located on the same straight line P1, the terminals corresponding to the three harness connection parts 51 in the center can be shared. . That is, three first terminals 24 can be used.
For this reason, the increase in the number of parts of the connector 20 can be suppressed, and the manufacturing cost can be reduced.

The present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention.
For example, in the above-described embodiment, the case where five harness connection parts 51 are provided has been described. However, the present invention is not limited to this, and at least four may be provided according to the number of connector terminals 22.

  Moreover, in the above-mentioned embodiment, the case where the five harness connection parts 51 were arranged so that three center positions among them were located on the same straight line P1 was demonstrated. However, the present invention is not limited to this, and when at least four harness connection parts 51 are arranged in parallel, the center positions of at least three adjacent harness connection parts 51 are arranged on the same straight line. Just do it. With this configuration, at least three terminals can be shared, and the number of parts can be reduced.

Furthermore, you may arrange | position so that the center position of all the five harness connection parts 51 may become on the upper cup 5 and a concentric circle. With this configuration, the diameter of the seal portion 16 can be further reduced, and the fuel supply device 1 can be further downsized.
In the above-described embodiment, the connector terminal 22 is configured by five terminals 24 to 26 including three first terminals 24, 24, 24, one second terminal 25, and one third terminal 26. Explained the case. However, the shape is not limited to this, and any shape that can be connected to the external connector 23 and can be routed in each harness connection portion 51 may be used.

  Further, in the above-described embodiment, the case where the fuel supply device 1 is a type that is inserted from the opening 2b formed in the upper wall 2a of the fuel tank 2 and attached to the upper wall 2a of the fuel tank 2 has been described. . However, the present invention is not limited to this, and the connector 20 of this embodiment can be applied to a fuel supply device that is inserted from the bottom wall of the fuel tank 2 and attached to the bottom wall.

DESCRIPTION OF SYMBOLS 1 Fuel supply apparatus 2 Fuel tank 2b Opening part 3 Fuel pump 4 Holder part 5 Upper cup (cylinder part)
6 Lower cup 7 Filter unit 9 Harness 12 Flange unit 16 Seal portion 20 Connector 21 Connector housing 23 External connector 24 First terminal (terminal)
25 Second terminal (terminal)
26 Third terminal (terminal)
51 Harness connection 71 Suction filter

Claims (3)

In a connector for supplying power from an external power source to the fuel pump, provided in a holder portion having a cylindrical portion containing a fuel pump disposed in a fuel tank,
A connector housing capable of fitting an external connector connected to the external power source;
A plurality of harness connecting portions that can be separately inserted into the other ends of the plurality of harnesses, one end of which is connected to the fuel pump;
A plurality of terminals extending from the connector housing to the harness connecting portion;
Each harness connection part is arrange | positioned in parallel along the outer peripheral surface of the said cylinder part, The connector characterized by the above-mentioned. Providing at least four harness connecting portions;
The connector according to claim 1, wherein at least three adjacent harness connection portions are arranged on the same straight line. A holder portion provided with the connector according to claim 1 or 2,
A fuel pump that is disposed in the fuel tank while being supported by the holder portion, pumps up the fuel in the fuel tank, and pumps the fuel to the internal combustion engine;
The holder part is
A flange unit fixed to the wall surface of the fuel tank;
The cylinder unit integrated with the flange unit;
The fuel supply device, wherein the flange unit is formed in a ring shape so as to surround the periphery of the cylindrical portion, and is provided with a seal portion that seals between the flange unit and the fuel tank. .

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