JP5358382B2 - Fuel pump support structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support structure which can mount a fuel pump easily on a fuel tank and maintain the functional components of the fuel pump. <P>SOLUTION: In this support structure of a fuel pump, engagement brackets 11 are provided to the insert hole 9 of the fuel tank 1, an upper mounting part 18 supported on the peripheral edge of the insertion hole 9 is formed on the fuel pump 8, an elastically deformable retainer 30 locked to the engagement bracket 11 is provided, the retainer 30 is locked to the engagement bracket 11, and the fuel pump 8 is supported on the fuel tank 1 through the retainer 30 interposed therebetween. The engagement brackets 11 include, respectively, first opening parts 42, 43 for swingably locking one end of the retainer 30 and second opening parts 53, 54 for fixing the other end of the retainer 30 while the retainer 30 locked to the first openings 42, 43 is elastically deformed and the upper mounting part 18 of the fuel pump 8 is pressed against the fuel tank 1. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a fuel pump support structure.

  There is a type in which an in-tank type fuel pump is attached to a fuel tank of a vehicle such as a motorcycle. In order to support this type of fuel pump, a pump support member is provided in the upper opening of the fuel tank, the fuel pump is set on the pump support member, and the retainer is inserted from the side to support the fuel pump to the fuel tank. (See Patent Document 1).

JP 2007-127003 A

  The conventional fuel pump support structure is superior in that the fuel pump can be easily attached to the fuel tank in place of the bolt by using a retainer, but in order to maintain the primary filter provided in the fuel pump. When removing the fuel pump from the fuel tank, the retainer is inserted from the side to secure the fuel pump, so it is difficult to pull out the retainer without interfering with the body parts when the fuel tank is secured to the body. There is a problem that it is necessary to remove exterior parts or the like or to remove a fuel tank, which takes man-hours for disassembly and assembly for maintenance.

  Accordingly, the present invention provides a support structure for a fuel pump that can maintain a structure in which the fuel pump can be easily attached to the fuel tank, and can maintain the functional parts of the fuel pump without removing the vehicle body exterior parts and the fuel tank. Objective.

In order to achieve the above object, the invention described in claim 1 is characterized in that an insertion port (9) for inserting the fuel pump (8 ) is formed in the upper wall (7) of the fuel tank (1) and an engagement bracket ( 11) , an upper mounting portion (18) supported on the peripheral edge of the insertion port (9 ) is formed in the fuel pump (8) , and the elastically deformable retainer is engaged with the engagement bracket (11). (30) , the retainer (30) is locked to the engagement bracket (11) , and the fuel pump (8) is supported by the fuel tank (1) via the retainer (30). In this support structure, the engagement bracket (11) includes a first opening (42, 43) that locks one end of the retainer (30) in a swingable manner, and the first opening (42 , 43). elastically deforming the retainer (30) which is engaged in Second for thereby fixing the other end of the retainer while urging the periphery of the insertion opening (9) (30) of the upper mounting portion of the fuel pump (8) said fuel tank (18) (1) and a opening (53, 54), said retainer (30) includes a body (31), a pair of legs extending in the same direction at a distance from the body (31) and (32, 33) And hooks (34, 35) for engaging with the first openings (42, 43) of the engagement bracket (11) are provided at the ends of the legs (32, 33), and the main body (31) is A fixing portion (36) is provided to be engaged with the second opening (53, 54) of the engagement bracket (11), and the hook (34, 35) is connected to the first opening ( 42, 43) after inserting and locking the retainer (30) on the side opposite to the insertion direction. Is de, characterized in that the said fixing portion of the retainer (30) to (36) engaged with the said second opening (53, 54) of said engagement bracket (11).

According to a second aspect of the present invention, at least one of the first opening (42, 43) and the second opening (53, 54) is in contact with the fuel pump (8) and the retainer (30). It is characterized in that it is located below the part to be operated.

The invention described in claim 3, around the insertion opening of the fuel tank (1) (9), one step down via (10) a stepped portion on said wall of said fuel tank (1) (7) A pump holding surface (15) is formed, and an upper mounting portion (18) of the fuel pump (8) includes an annular portion (23) contacting the pump holding surface (15) and an upper portion of the annular portion (23) . A flange portion (24) projecting outward, between the outer peripheral surface of the annular portion (23) of the fuel pump (8) and the outer surface of the upper wall (7) of the fuel tank (1). sealant while interposed (60), the sealing member between the outer surface of the upper wall (7) of the fuel tank the flange portion (24) of the fuel pump (8) (1) (61) Is provided.

According to a fourth aspect of the present invention, the seal member (61) is formed in an annular shape, and the outer lip enters between the flange portion (24) and the outer surface of the upper wall (7) of the fuel tank (1). (62) and an inner lip (63) entering between the outer peripheral surface of the annular portion (23) and the vertical wall of the stepped portion (10) .

According to a fifth aspect of the present invention, the retainer (30) and the engagement bracket (11) with the fuel pump (8) attached between the retainer (30) and the engagement bracket (11). ) And a positioning member (47) to be inserted through the overlapping portion.

The invention described in claim 6 is characterized in that a guide portion (22) contacting the leg portions (32, 33) of the retainer (30 ) is provided on the upper wall of the fuel pump (8) .

The invention described in claim 7 is characterized in that the main body (31) of the retainer (30 ) is provided with bent portions (38, 39) having an L-shaped cross section.

The invention as set forth in claim 8, wherein the fuel pump (8) Fuel feed pipe on one side of the upper wall (20) is provided, the upper wall of the fuel feed pipe (20) wherein the fuel pump (8) (7) is extended beyond the engagement bracket (11) , and a coupler (21) is provided on the other side of the upper surface of the fuel pump (8). The coupler (21) is connected to the engagement bracket (11). positioned inside), the fuel feed pipe (20) is arranged directed to the legs (32, 33) side of the retainer (30), the body of the coupler (21) said retainer (30) ( 31) It is characterized by being oriented toward the side.

According to the ninth aspect of the present invention, an insertion port (9) for inserting the fuel pump (8) is formed in the upper wall (7) of the fuel tank (1), and an engagement bracket (11 ') is provided, The pump (8) is provided with an upper mounting portion (18) supported on the periphery of the insertion port (9) and provided with an elastically deformable retainer (30 ') that is engaged with the engagement bracket (11'). The fuel pump (8) is supported by the fuel tank (1) via the retainer (30 ') by locking the retainer (30') to the engagement bracket (11 '). In the structure, the engagement bracket (11 ′) includes a first opening (42, 43) that slidably engages one end side of the retainer (30 ′), and the first opening (42, 43). The other end of the retainer (30 ′) locked to The upper mounting portion (18) of the fuel pump (8) is fixed to the peripheral edge of the insertion port (9) of the fuel tank (1), and the retainer (30 ′) 31 ′) and a pair of leg portions (32 ′, 33 ′) extending in the same direction at a distance from the main body (31 ′), and one end side of the retainer (30 ′) is disposed on the leg portion (32). ', 33') and the other end side as a corner portion between the leg portions (32 ', 33') and the main body (31 '), the corner portion is connected to the engagement bracket by a bolt (73). It is fixed to (11 ').

According to the first aspect of the present invention, the fuel pump can be easily attached to the fuel tank using the retainer, and the fuel pump can be attached and detached with the minimum retainer slide amount accessed from above the fuel tank. Therefore, it is possible to reduce the number of assembling steps, and it is easy to perform work when maintaining the functional parts of the fuel pump.
Further, the retainer can be easily attached by a slide operation of the retainer.
According to the second aspect of the present invention, the fuel pump can be supported using the biasing force generated by the elastic force of the retainer that has been elastically deformed.
According to the invention described in claim 3, the pump holding surface for directly holding the fuel pump is provided in the fuel tank, and the seal member is provided between the flange portion of the fuel pump and the outer surface of the upper wall of the fuel tank. Thus, the fuel pump can be supported without subjecting the pump holding surface to rust prevention treatment.
According to the invention described in claim 4, an urging force can be applied in the direction in which the fuel pump presses against the fuel tank, and the outer lip and the inner lip enter the gap by the urging force of the retainer to position the seal. It can be carried out.
According to the invention described in claim 5, for example, when the fuel pump is slightly displaced in the horizontal direction with respect to the fuel tank, even if the retainer can be attached, Since the positioning member cannot be inserted into the overlapping portion with the mating bracket, it can be notified that the assembly is incorrect.
According to the sixth aspect of the invention, the fuel pump can be positioned and prevented from rotating with respect to the fuel tank.
According to the seventh aspect of the present invention, the retainer can be easily gripped.
According to the eighth aspect of the present invention, the fuel feed pipe and the coupler can be operated without interfering when the retainer is attached or detached.
According to the ninth aspect of the present invention, the fuel pump can be accessed from above the fuel tank during maintenance of the fuel pump, and the retainer can be positioned and the pump fixed by the bolt.

It is a disassembled perspective view of the fuel tank of embodiment of this invention. It is a principal part enlarged view of FIG. FIG. 3 is an enlarged plan view of FIG. 2. It is sectional drawing which follows the leg part of FIG. It is a principal part enlarged view of FIG. It is a disassembled perspective view of the fuel pump of embodiment of this invention. It is a top view equivalent to FIG. 3 of 2nd Embodiment of this invention. It is principal part side explanatory drawing of the attachment state of 2nd Embodiment of this invention. It is principal part side explanatory drawing of the attachment state of 2nd Embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a fuel tank 1 of a motorcycle, for example. The fuel tank 1 is formed by welding a steel plate upper half 2 and a lower half 3 with an upper flange 4 and a lower flange 5. Yes. A recess 6 is formed in the upper half 2, and a flat upper wall 7 is formed in the recess 6.

As shown in FIGS. 1 to 3, a circular insertion port 9 for inserting the fuel pump 8 is formed in the upper wall 7. The insertion port 9 is formed at a position one step below the upper wall 7 through the step portion 10. An engagement bracket 11 that locks a retainer 30 described later is welded and fixed around the insertion opening 9. Specifically, the engagement bracket 11 is divided into an insertion bracket 12 that receives the retainer 30 and a fixing bracket 13 that locks the retainer 30, and the insertion bracket 12 and the fixing bracket 13 are distributed around the insertion port 9. Are arranged.
The step portion 10 of the upper wall 7 of the fuel tank 1 has a vertical wall 14 that extends vertically from the upper wall 7, and a pump holding surface 15 of the fuel pump 8 that extends horizontally from the vertical wall 14 and constitutes the periphery of the insertion port 9. And.

  The fuel pump 8 is a so-called in-tank type fuel pump 8 immersed in the fuel tank 1 and supplies fuel in the fuel tank 1 to an injector (not shown). The fuel pump 8 includes a primary filter 16 for filtering impurities in the fuel in the fuel tank 1 and a sender 17 for measuring the fuel level at the lower part. The upper part of the fuel pump 8 has a larger diameter than the lower part, and the pump holding surface 15 at the periphery of the insertion port 9 of the fuel tank 1 with the primary filter 16 and the sender 17 provided in the lower part inserted into the fuel tank 1. And an upper mounting portion 18 that is detachably supported.

A fuel feed pipe 20 is not shown on the other side of the upper wall 19 of the upper mounting portion 18 of the fuel pump 8 along the direction in which the insertion bracket 12 and the fixing bracket 13 constituting the engagement bracket 11 are arranged. A coupler 21 to which the connector is connected is provided. The fuel feed pipe 20 extends to the position beyond the outer peripheral portion of the upper wall 19 of the upper mounting portion 18 of the fuel pump 8 and extends toward the front end side of leg portions 32 and 33 of a retainer 30 to be described later. Reference numeral 21 denotes an inner side of the engagement bracket 11, that is, between the insertion bracket 12 and the fixed bracket 13, and is disposed so as to face a main body 31 of a retainer 30 described later.
On the upper wall 19 of the upper mounting portion 18 of the fuel pump 8, the upper mounting portion 18 is placed on a side portion away from the fuel feed pipe 20 and the coupler 21 so as to be along the arrangement position of the fuel feed pipe 20 and the coupler 21. A pair of guide portions 22, 22 rising from the wall 19 and abutting against the outer edge of the retainer 30 are attached.

  The retainer 30 is an elastically deformable plate-like member that is engaged with the upper mounting portion 18 of the fuel pump 8 inserted from the insertion port 9 of the fuel tank 1 pressed against the pump holding surface 15 of the fuel tank 1. The fuel pump 8 is supported on the fuel tank 1 by being fixed to the bracket 11.

  Specifically, the retainer 30 extends from the main body 31 corresponding to the fixed bracket 13 side of the engagement bracket 11 and the same direction at intervals from both ends of the main body 31, and the distal end corresponds to the insertion bracket 12. A U-shaped member having a pair of leg portions 32 and 33. The leg portions 32 and 33 extend from the base portion on the main body 31 side toward the tip portion with substantially the same width. The distal ends of the legs 32 and 33 are both bent upward, one leg 32 is a bent part 34, and the other leg 33 is a positioning fold extending further upward from the bent part 34 and the bent part 34. A curved portion 35 is provided.

  An insertion hole 29 for a positioning bolt 47 is formed in the positioning bent portion 35. The base portions of the leg portions 32 and 33 are connected to the main body 31 with the inner edges widened in an obliquely widening direction toward the inside, and the leg portions 32 and 33 of the main body 31 are connected to the base portion side of the leg portions 32 and 33. Locking pieces 36 that protrude to the opposite side of the tip and offset toward the outside are provided in a protruding manner.

  Here, the protruding length of the locking piece 36 is such that when the bent portion 34 and the positioning bent portion 35 of the leg portions 32 and 33 are inserted into the first openings 42 and 43 of the insertion bracket 12, the fixed bracket 13. Is not locked to the second openings 53 and 54, but is fixed at a position where the bent portions 34 and positioning bent portions 35 of the leg portions 32 and 33 come into contact with the support pieces 44 and 45 of the insertion bracket 12 immediately before contacting. The length is set so as to be engaged with the second openings 53 and 54 of the bracket 13.

  The body 31 of the retainer 30 has a rear edge divided into three parts through two notches 37 at both end sides and the center side, and side bent portions 38 and 38 are center bent at the center side. Both portions 39 are formed in an L-shaped cross-section with rising edges. A stopper hole 40 for the claw piece 55 of the fixed bracket 13 of the engagement bracket 11 is formed on the upper surface of the central bent portion 39.

  The insertion bracket 12 of the engagement bracket 11 has a base 41 fixed to the fuel tank 1 and support pieces 44 and 45 that rise upward from the insertion port 9 side at both ends of the base 41. The support pieces 44, 45 include first openings 42, 43 that respectively insert the leg portions 32, 33 of the retainer 30 from the bent portion 34 and the positioning bent portion 35 so as to be swingable. The support piece 45 is provided with a positioning piece 46 that extends on the positioning bent portion 35 of the leg portion 33 of the retainer 30 and further extends upward. An insertion hole 48 for a positioning bolt 47 is formed in the positioning piece 46, and a weld nut 49 to which the positioning bolt 47 is screwed is welded and fixed to the back side of the positioning piece 46 (see FIG. 3).

  The fixing bracket 13 of the engagement bracket 11 includes a base 50 fixed to the fuel tank 1 and fixing pieces 51 and 52 that rise upward from the insertion port 9 side at both ends of the base 50. The fixing pieces 51 and 52 are formed with second openings 53 and 54 into which the respective locking pieces 36 of the leg portions 32 and 33 of the retainer 30 are inserted and locked. Specifically, the second openings 53 and 54 elastically deform the retainer 30 locked to the first openings 42 and 43 of the insertion bracket 12 of the engagement bracket 11 so as to protrude upward, and thus the fuel pump. In the state where the upper mounting portion 18 is urged against the pump holding surface 15 at the periphery of the insertion port 9 of the fuel tank 1, the locking pieces 36 and 36 of the leg portions 32 and 33 of the retainer 30 are slid and fixed.

  Here, as shown in FIG. 4, the first openings 42 and 43 of the insertion bracket 12 of the engagement bracket 11 and the second openings 53 and 54 of the fixed bracket 13 connect the upper mounting portion 18 of the fuel pump 8 to the fuel tank. 1 is positioned below the upper wall 19 where the fuel pump 8 and the retainer 30 are in contact with the pump holding surface 15, and the retainer 30 is allowed to be deformed and fixed so as to protrude upward. doing. In addition, although the case where both the first opening portions 42 and 43 and the second opening portions 53 and 54 are located below the upper wall 19 where the fuel pump 8 and the retainer 30 are in contact with each other has been described, at least one of them is described. One should just be located below.

  A claw piece 55 is formed at the central portion of the base 50 of the fixed bracket 13 at the edge opposite to the insertion port 9, and this claw piece 55 is suitable for the fuel pump 8 in which the retainer 30 is fixed to the engagement bracket 11. At the fixed position, it is locked in the stopper hole 40 of the retainer 30.

  Further, at the proper fixing position of the fuel pump 8, the positioning bent portion 35 of the leg portion 33 of the retainer 30 and the positioning piece 46 of the support piece 45 of the insertion bracket 12 of the engagement bracket 11 are overlapped, and the positioning bent portion. 35 and the insertion hole 48 of the positioning piece 46 coincide with each other, and the positioning bolt 47 can be inserted into each of the insertion holes 29 and 48 of the overlapping portion. Therefore, if the positioning bolt 47 can be fastened and fixed to the weld nut 49, the fuel It can be confirmed that the pump 8 is fixed at an appropriate position without displacement.

  As shown in FIG. 5, the upper mounting portion 18 of the fuel pump 8 includes an annular portion 23 that contacts the pump holding surface 15 of the fuel tank 1 and a flange portion 24 that is an upper portion of the annular portion 23 and projects outward. ing. Between the outer peripheral surface 25 of the annular portion 23 of the fuel pump 8, the pump holding surface 15 of the upper wall 7 of the fuel tank 1, and the vertical wall 14 of the stepped portion 10, an annular sealing material 60 having a circular cross section is interposed. Yes. An annular seal member 61 is provided between the outer peripheral surface 26 of the flange portion 24 of the fuel pump 8 and the upper wall 7 of the fuel tank 1. .

  The seal member 61 includes an outer lip 62 that enters between the outer peripheral surface 26 of the flange portion 24 of the fuel pump 8 and the outer surface of the upper wall 7 of the fuel tank 1, and an outer peripheral surface 25 and a step portion of the annular portion 23 of the fuel pump 8. An inner lip 63 that enters between the 10 vertical walls 14

  Here, as shown in FIG. 6, a cylindrical sender body 64 for attaching the sender 17 is detachably attached to the lower portion of the fuel pump 8 so as to cover the bottom wall of the fuel pump body 8A. A float 65 is swingably supported on the sender 17 via an arm 66, and the primary filter 16 is detachably attached to a fuel inlet 67 at the lower portion of the fuel pump body 8A.

  According to the above embodiment, when the fuel pump 8 is attached to the fuel tank 1, the primary filter 16, the float 65, and the sender 17 are inserted from above the insertion port 9 of the fuel tank 1, and the fuel pump 1 is inserted. The lower surface of the annular portion 23 of the upper mounting portion 18 is brought into contact with the pump holding surface 15 of the upper wall 7 of the fuel tank 1.

  Then, the side bent portion 38 and the central bent portion 39 of the main body 31 of the retainer 30 are gripped, and the bent portions 34 and the positioning bent portions 35 of the leg portions 32 and 33 of the retainer 30 are connected to the first opening portion of the insertion bracket 12. After being inserted and locked to 42 and 43 respectively, the main body 31 of the retainer 30 is pushed from the chain line position in FIG. 4 to the solid line position to curve the retainer 30 so as to protrude upward, and the leg portions 32, The locking pieces 36, 36 provided at the base portion 33 are slightly slid and locked to the second openings 53, 54 of the fixing bracket 13 in the direction opposite to the insertion direction of the legs 32, 33.

Therefore, the fuel pump 8 can be easily attached to the fuel tank 1 using the retainer 30 and the vehicle body exterior parts and the fuel tank can be removed from the upper side of the fuel tank 1 without interfering with other body parts. Since the fuel pump 8 can be attached and removed with the smallest retainer 30 slide amount, the number of assembling steps can be reduced, and the work is also performed when the primary filter 16 and the sender 17 which are functional parts of the fuel pump 8 are maintained. easy.
At this time, since the retainer 30 is guided by the guide portions 22, 22 of the fuel pump 8, the fuel pump 8 can be positioned and prevented from rotating with respect to the fuel tank 1.

Here, since the fuel pump 8 can be supported on the fuel tank 1 by using an urging force generated by the elastic force of the retainer 30 that is elastically deformed so as to protrude upward, the fuel pump 8 is surely moved from the upper side to the lower side. It can be supported by pressing.
A pump holding surface 15 that directly holds the fuel pump 8 is provided in the fuel tank 1, and a seal member is provided between the outer peripheral surface 26 of the flange portion 24 of the fuel pump 8 and the outer surface of the upper wall 7 of the fuel tank 1. By providing 61, water can be prevented from entering the pump holding surface 15, so that the fuel pump 8 can be supported without subjecting the pump holding surface 15 to rust prevention treatment. Therefore, it is not necessary to subject the entire upper half 2 of the fuel tank 1 to rust prevention.
The seal by the seal member 61 can apply a biasing force in the direction in which the fuel pump 8 presses against the fuel tank 1, and the outer lip 62 and the inner lip 63 are caused by the biasing force resulting from the elastic force of the retainer 30. The seal member 61 can be positioned by entering the gap.

  Further, when the fuel pump 8 is slightly displaced with respect to the fuel tank 1 in the horizontal direction, for example, even if the retainer 30 can be attached to the engagement bracket 11, The overlapping portion with the engaging bracket 11, that is, the positioning bent portion 35 of the leg portion 33 of the retainer 30 and the positioning piece 46 of the support piece 45 of the insertion bracket 12 of the engaging bracket 11 are overlapped, and the positioning bent portion 35 is inserted. If the hole 29 and the insertion hole 48 of the positioning piece 46 do not match, the positioning bolt 47 cannot be inserted into each of the insertion holes 29, 48. be able to. Therefore, if the positioning bolt 47 can be fastened and fixed to the weld nut 49, it can be confirmed that the fuel pump 8 is fixed at an appropriate position without being displaced.

  Here, when attaching / removing the retainer 30, the operation can be performed without the fuel feed pipe 20 and the coupler 21 interfering with the retainer 30.

Next, a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, an engagement bracket 11 ′ and a retainer 30 ′ obtained by changing the engagement bracket 11 and the retainer 30 of the first embodiment are used. Since the configuration other than the members related to the engagement bracket 11 ′ and the retainer 30 ′ is the same as that of the first embodiment, the same portions are denoted by the same reference numerals, and description thereof is omitted.

  The engagement bracket 11 'is divided into an insertion bracket 12' and a fixed bracket 13 '. The insertion bracket 12 'includes a base 41 and support pieces 44 and 45, but the positioning piece 46 of the first embodiment is not formed. First openings 42 and 43 are formed in the support pieces 44 and 45. The fixed bracket 13 ′ includes a pair of mounting seats 70 on the base 50 ′. A stud bolt 73 to which a nut 71 is fastened is attached to the back side of the mounting seat 70.

  The retainer 30 'is a member obtained by extending leg portions 32', 33 'from the main body 31', and bent portions 34, 34 are provided at the distal ends of the leg portions 32 ', 33'. The positioning bent portion 35 of the first embodiment is not formed on the portion 33 ′. The leg portions 32 'and 33' extend from the main body 31 'with the same width, and the locking piece 36 of the first embodiment does not exist. An insertion portion 72 of a stud bolt 73 is formed at a corner portion between the leg portions 32 ', 33' and the main body 31 '. A nut 71 is fastened to the stud bolt 73 from above the mounting seat 70 of the fixing bracket 13 ′.

  Therefore, when the fuel pump 8 is attached to the fuel tank 1 in the second embodiment, the primary filter 16, the float 65 and the sender 17 are inserted from above the insertion port 9 of the fuel tank 1 to The lower surface of the annular portion 23 of the upper mounting portion 18 of the pump 8 is brought into contact with the pump holding surface 15 of the upper wall 7 of the fuel tank 1.

  Then, after the bent portions 34, 34 of the leg portions 32 ', 33' of the retainer 30 'are inserted and locked in the first openings 42, 43 of the insertion bracket 12', the main body 31 'of the retainer 30' is pushed in. Then, the retainer 30 ′ is curved so as to protrude upward, and the stud bolt protruding from the insertion portions 72, 72 of the mounting seat 70 at the corner portion between the legs 32 ′, 33 ′ of the retainer 30 ′ and the main body 31 ′. The nuts 71 and 71 may be fastened to 73 and 73.

  According to this embodiment, in addition to the effects of the first embodiment, the positioning function of the retainer 30 ′ and the fuel pump 8 can be fixed by the stud bolt 73 and the nut 71. As a result, the positioning bolt 47 of the first embodiment can be eliminated, and the structure of the retainer 30 can be simplified.

  In addition, this invention is not restricted to the said embodiment, For example, it can apply to the fuel tank of various vehicles other than the fuel tank of a motorcycle.

DESCRIPTION OF SYMBOLS 1 Fuel tank 7 Upper wall 8 Fuel pump 9 Insertion port 10 Step part 11 , 11 ' engagement bracket 15 Pump holding surface 18 Upper attachment part 19 Upper wall (part to contact)
20 Fuel feed pipe 21 Coupler 22 Guide part 23 Annular part 24 Flange part 30 , 30 ′ Retainer 31 , 31 ′ Body 32 , 33 , 32 ′, 33 ′ Leg part 34 Bent part (hook)
35 Positioned bending part (hook)
36 Locking piece (fixed part)
38 Side bend 39 Central bend
42 First opening
43 First opening 47 Positioning bolt (positioning member)
53 First opening
54 First opening 60 Sealing material 61 Sealing member 62 Outer lip 63 Inner lip 73 Stud bolt

Claims (9)

  An insertion port (9) for inserting the fuel pump (8) is formed in the upper wall (7) of the fuel tank (1) and an engagement bracket (11) is provided, and the insertion port (9) is provided in the fuel pump (8). ) And an elastically deformable retainer (30) that is engaged with the engagement bracket (11). The retainer (30) is attached to the engagement bracket (11). 11), the engagement bracket (11) is connected to the retainer (30) in the fuel pump support structure in which the fuel pump (8) is supported by the fuel tank (1) via the retainer (30). ) And the retainer (30) locked to the first opening (42, 43) is elastically deformed to elastically deform the first pump (42, 43) and the fuel pump. The upper mounting part (18) of (8) The retainer (30) includes a second opening (53, 54) for fixing the other end of the retainer (30) in a state of being biased to the periphery of the insertion port (9) of the tank (1). A main body (31) and a pair of leg portions (32, 33) extending in the same direction at a distance from the main body (31), and the engagement bracket at the end of the leg portion (32, 33) A hook (34, 35) is provided to be engaged with the first opening (42, 43) of (11), and the main body (31) is connected to the second opening (53, 54) of the engagement bracket (11). A fixing portion (36) for locking is provided, and the retainer (30) is inserted after the hook (34, 35) is inserted and locked into the first opening (42, 43) of the engaging bracket (11). Slide the opposite side of the direction to the fixed part (36) of the retainer (30) The support structure of the fuel pump, characterized in that engaged in the second opening of the engagement bracket (11) (53, 54).   At least one of the first opening (42, 43) and the second opening (53, 54) is positioned below a portion where the fuel pump (8) and the retainer (30) are in contact with each other. The fuel pump support structure according to claim 1, wherein:   A pump holding surface (15) is formed around the insertion port (9) of the fuel tank (1) with a stepped portion lowered by a step on the upper wall (7) of the fuel tank (1) via (10). The upper mounting portion (18) of the fuel pump (8) includes an annular portion (23) that contacts the pump holding surface (15), and a flange portion that is an upper portion of the annular portion (23) and projects outward. (24), and a sealing material (60) is interposed between the outer peripheral surface of the annular portion (23) of the fuel pump (8) and the outer surface of the upper wall (7) of the fuel tank (1). In addition, a seal member (61) is provided between the flange portion (24) of the fuel pump (8) and the outer surface of the upper wall (7) of the fuel tank (1). Item 4. A fuel pump support structure according to Item 1.   The seal member (61) is formed in an annular shape, an outer lip (62) that enters between the flange portion (24) and the outer surface of the upper wall (7) of the fuel tank (1), and the annular portion ( The fuel pump support structure according to claim 3, further comprising an inner lip (63) that enters between the outer peripheral surface of (23) and the vertical wall of the step portion (10).   Between the retainer (30) and the engagement bracket (11), the fuel pump (8) is attached and inserted into the overlap portion of the retainer (30) and the engagement bracket (11). The fuel pump support structure according to claim 1, further comprising a positioning member (47).   The fuel pump support structure according to claim 1, wherein a guide portion (22) that abuts on a leg portion (32, 33) of the retainer (30) is provided on an upper wall of the fuel pump (8).   7. The fuel pump support structure according to claim 6, wherein a bent portion (38, 39) having an L-shaped cross section is provided in the main body (31) of the retainer (30).   A fuel feed pipe (20) is provided on one side of the upper wall of the fuel pump (8). The fuel feed pipe (20) connects the upper wall (7) of the fuel pump (8) to the engagement bracket ( 11) and a coupler (21) is provided on the other side of the upper surface of the fuel pump (8). The coupler (21) is located inside the engagement bracket (11), and the fuel The feed pipe (20) is arranged to face the leg (32, 33) side of the retainer (30), and the coupler (21) is arranged to face the main body (31) side of the retainer (30). 2. The fuel pump support structure according to claim 1, wherein the support structure is a fuel pump. An insertion port (9) for inserting the fuel pump (8) is formed in the upper wall (7) of the fuel tank (1) and an engagement bracket (11 ′) is provided, and the insertion port ( 9) forming an upper mounting portion (18) supported on the periphery of the retainer, and providing an elastically deformable retainer (30 ′) to be engaged with the engaging bracket (11 ′). In the support structure of the fuel pump that is locked to the engagement bracket (11 ′) and supports the fuel pump (8) to the fuel tank (1) via the retainer (30 ′), the engagement bracket (11 ') Includes a first opening (42, 43) that locks one end of the retainer (30') in a swingable manner, and the retainer (42, 43) locked to the first opening (42, 43). 30 ′) is elastically deformed at the other end and the upper part of the fuel pump (8) is attached (18) is fixed in a state of being biased to the peripheral edge of the insertion port (9) of the fuel tank (1). The retainer (30 ′) includes a main body (31 ′) and the main body (31). ') And a pair of leg portions (32', 33 ') extending in the same direction at a distance from each other, and one end side of the retainer (30') is used as a tip portion of the leg portion (32 ', 33'). The other end side is a corner portion between the leg portions (32 ', 33') and the main body (31 '), and the corner portion is fixed to the engagement bracket (11') by a bolt (73). A fuel pump support structure.

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