JP4921839B2 - Electric pump holding device - Google Patents

Description

  The present invention mainly relates to a fuel supply module that supplies fuel to a fuel injection valve of an engine. The fuel in the fuel tank is attached to the lower surface of a mounting base member that has a fuel take-out pipe outside and is attached to a mounting wall of the fuel tank. The present invention relates to an improvement of an electric pump holding device for holding an electric pump that is pumped and sent to the fuel take-out pipe.

Such an electric pump holding device is already known as disclosed in Patent Document 1.
JP-A-8-270528

  In the electric pump holding device disclosed in the above-mentioned Patent Document 1, the bracket, the pump case, and the flange (corresponding to the mounting base member of the present invention) that are divided into three parts are coupled to each other by snap-fit fitting, thereby providing a flange. However, in such a case, the number of parts is large, and in particular, two sets of snap-fit fitting parts are required, so the number of assembly steps is large, and the overall cost is inevitable. . In addition, each snap-fit fitting portion is adapted to engage with the locking hole when the locking claw is deformed in the radial direction of the electric pump, so that the diameter of the holding device is increased.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide the electric pump holding device that has a small number of parts and assembly steps, is inexpensive, and can avoid an increase in diameter.

To achieve the above object, according to the present invention, the fuel in the fuel tank is pumped to the lower surface of the mounting base member that has the fuel take-out pipe outside and is attached to the mounting wall of the fuel tank, and sends it to the fuel take-out pipe. In an electric pump holding device for holding an electric pump, a cylindrical upper pump holder that is integrally provided on the lower surface of a mounting base member, and a cylinder that accommodates and holds the electric pump in cooperation with the upper pump holder The lower end of the upper pump holder and the lower pump holder are abutted against each other, and one end of the abutting end projects from the end surface to fit the outer peripheral surface of the electric pump. A locking claw is formed on the other side, and a T-shaped locking groove is formed on the other end surface of the locking claw. Combining the lower pump holder to each other, the upper and the butt end of the lower pump holder, each arcuate mating wall and fitting the press-fitted to each other are formed respectively on one and the other of its butt end A first feature is that a stamping fitting portion formed of a concave portion is partially provided , and the relative rotation of both pump holders is prevented by the stamping fitting portion .

  In addition to the first feature, the present invention has a second feature that the outer diameters of the upper and lower pump holders are set equal.

  Furthermore, in addition to the second feature, the third feature of the present invention is that the locking claw is formed such that its outer surface is continuous with the outer peripheral surface of the pump holder having the locking claw. .

  Furthermore, in addition to any one of the first to third features, the present invention forms a slit that opens in the bottom surface of the locking groove in the pump holder having the locking groove, or The fourth feature is that a slit is formed in the front end surface.

  Furthermore, according to the fifth aspect of the present invention, in addition to any one of the first to fourth characteristics, a tip surface of the locking claw is formed as a tapered surface inclined toward the inner surface of the locking claw. It is characterized by.

  According to the first feature of the present invention, the upper and lower pump holders coupled by engagement of the locking claw and the locking groove can accommodate and hold the electric pump in cooperation with each other. That is, since the electric pump holding device is composed of two members, an upper pump holder and a lower pump holder, the number of parts is extremely small and the structure is simple. Moreover, since the engagement of the locking claw and the locking groove only needs to be performed once, the number of assembling steps is extremely small, and the electric pump holding device can be obtained at a low cost. Further, according to the engagement of the T-shaped locking claw and the locking groove, there is no overlap between the locking claw and the peripheral wall of the other pump holder. In this case, it is possible to eliminate the formation of the protruding portion on the outer periphery, which can contribute to the compactness of the electric pump holding device.

Further, in particular, the butt end portions of the upper and lower pump holders are formed at one and the other of the butt end portions, and are each formed with an arcuate fitting wall and a fitting recess that are press-fitted to each other. the provided partially, so preventing relative rotation of both the pump holder by its spigot fitting portion, by its spigot fitting portion, it is possible to reliably prevent the relative rotation of both the pump holder, thereby, mutually Even if there is some play between the engaging claw and the engaging groove to be engaged, rattling between the two pump holders due to the play can be prevented.

  According to the second feature of the present invention, both pump holders having the same diameter can be opposed to each other, so that the electric pump can be covered in a wide range by both pump holders, and the outer peripheral surfaces of both pump holders. Can be continued, which can contribute to the compactness of the electric pump holding device.

  According to the third feature of the present invention, the opposing end portions of both pump holders having the same diameter are abutted, and the inner and outer surfaces of the locking claw are respectively continuous with the inner and outer peripheral surfaces of the lower pump holder. Therefore, the electric pump can be covered in a wide range by both pump holders, and the protrusions on the outer circumferences of both pump holders can be eliminated, which can contribute to further downsizing of the electric pump holding device.

  According to the fourth feature of the present invention, when the upper pump holder or the lower pump holder is molded, the shrinkage of the peripheral wall is absorbed by this slit, and the molding accuracy of the corresponding pump holder can be improved. A dimensional error between the locking claw and the locking groove can be absorbed by expansion / contraction of the slit.

  According to the fifth feature of the present invention, when the two pump holders are brought close to each other, the engagement of the locking claws onto the outer peripheral surface of the mating pump holder is automatically and smoothly performed by the guiding action of the tapered surfaces. The operation of engaging the pawl with the locking groove can be performed easily and reliably.

  Embodiments of the present invention will be described below on the basis of preferred embodiments of the present invention shown in the accompanying drawings.

  FIG. 1 is a perspective view of a fuel supply module including an electric pump holding device according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing the fuel supply module attached to a fuel tank, and FIG. Fig. 4 is a longitudinal sectional view of the pump holding device in an exploded state, Fig. 4 is a longitudinal sectional view of the electric pump holding device in a coupled state, Fig. 5 is a view in the direction of arrow 5 in Fig. 3, and Fig. 6 is a view in the direction of arrow 6 in Fig. 4. 7 is an enlarged cross-sectional view taken along line 7-7 of FIG. 4, FIG. 8 is an exploded view of the electric pump holding device according to the second embodiment of the present invention, a corresponding view with FIG. 5, and FIG. FIG. 9 is a diagram corresponding to FIG. 8 showing a coupling state of the devices.

  First, a first embodiment of the present invention shown in FIGS. 1 to 7 will be described.

  1 and 2, a fuel supply module M for supplying the fuel in the fuel tank T to the fuel injection valve I of the engine is attached to the ceiling wall 1 of the fuel tank T mounted on a vehicle such as a motorcycle.

  The fuel supply module M includes an attachment base member 2, an electric pump Ep disposed directly below the attachment base member 2 with the axial direction directed up and down, and an upper pump holder 3 </ b> A formed integrally with the attachment base member 2. A lower pump holder 3B that accommodates and holds the electric pump Ep in cooperation with the mounting base member 2 and a fuel strainer that is attached to the lower end of the electric pump Ep. 4 is provided.

  An opening 5 for inserting the electric pump Ep is provided in the ceiling wall 1 of the fuel tank T, and a mounting ring 6 surrounding the opening 5 is fixed. A plurality of mounting bolts 7, 7... Projecting from the upper surface of the mounting ring 6 are fixed.

  The mounting base member 2 is overlaid on the upper surface of the mounting ring 6 so as to close the opening 5, and includes a plurality of mounting bolts 7, 7... And a plurality of nuts 8, 8. It is fixed to the mounting ring 6. At that time, an annular seal member 9 for sealing the opening 5 is interposed between the mounting base member 2 and the ceiling wall 1 of the fuel tank T.

  The attachment base member 2 is made of synthetic resin, and a fuel take-out pipe 12 protruding in the horizontal direction outside the fuel tank T is integrally formed on the top of the attachment base member 2. Is connected to a fuel supply conduit 33 connected to the fuel injection valve I of the engine.

  The upper pump holder 3A formed integrally with the lower surface of the mounting base member 2 has a cylindrical shape so as to protrude into the fuel tank T and fit into the outer peripheral surface of the upper half of the electric pump Ep. The holder 3A is provided with a plurality of T-shaped locking grooves 56 with their lower ends open at regular intervals in the circumferential direction.

  On the other hand, the lower pump holder 3B is formed into a cylindrical shape with a synthetic resin so as to accommodate and hold the lower half of the electric pump Ep. At that time, a plurality of T-shaped locking claws 55 projecting from the upper end are integrally formed. Then, by engaging these locking claws 55 with the locking grooves 56, the lower pump holder 3B is coupled to the upper pump holder 3A. Thus, the electric pump Ep is accommodated and held between the upper pump holder 3A and the lower pump holder 3B.

  The electric pump Ep includes an electric motor E with the rotor 20 oriented in the vertical direction and a fuel pump P driven by the electric motor E. The electric motor E is coupled to a cylindrical stator 17 having a plurality of magnets 17a arranged in the circumferential direction on the inner circumferential surface, an upper bearing bracket 18 that is caulked to the upper end of the stator 17, and a lower end portion thereof. The lower bearing bracket 19 and the rotor 20 on which the rotor shaft 20a is supported by the upper and lower bearing brackets 18 and 19 are configured.

  The fuel pump P includes a pump case 23 that is caulked to the stator 17 together with the lower bearing bracket 19 to define a pump chamber 22 between the lower surface of the lower bearing bracket 19 and a rotor shaft that is rotatably accommodated in the pump chamber 22. The pump impeller 24 connected to the lower end of 20a is configured as a Wesco type.

  The pump case 23 is provided with a suction port 25 that opens into the pump chamber 22, and the fuel strainer 4 disposed at the bottom of the fuel tank T is connected to the suction port 25. It is attached to a support shaft 26 projecting from the lower surface of the case 23. The lower bearing bracket 19 is provided with a discharge port 27 that communicates with the pump chamber 22 and the stator 17.

  The upper bearing bracket 18 is integrally formed with a fuel discharge pipe 30 that protrudes upward and has a final discharge port 34 that communicates with the interior of the stator 17, and the fuel flows back to the final discharge port 34 inside thereof. A check valve 31 is provided to prevent this. The fuel discharge pipe 30 is fitted into a fitting hole 29 opened on the lower surface of the mounting base member 2 via a seal member 32.

  The mounting base member 2 has a series of L-shaped fuel passages 28 running inside the fuel take-out pipe 12 and the fuel discharge pipe 30, and branches from the middle of the fuel passage 28 to open the downstream end into the fuel tank T. Pressure regulating path 35 is formed. The pressure adjusting path 35 is bent downward from the upstream end of the pressure adjusting path 35a formed on the extension line of the fuel passage 28 on the fuel take-out pipe 12 side, and the downstream end of the upstream side 35a of the pressure adjusting path. The pressure regulating passage downstream portion 35b that opens into the fuel tank T, and the pressure in the fuel passage 28 is set to a predetermined pressure suitable for fuel injection from the fuel injection valve I in the pressure regulating passage downstream portion 35b. A regulator valve R for adjustment is provided.

  The regulator valve R includes a bottomed cylindrical valve housing 36 formed separately from the mounting base member 2, and a valve hole 37 penetrating through the end wall of the valve housing 36, and the valve A conical valve seat 38 connected to the inner end of the hole 37 is formed. In the valve chamber 42 in the valve housing 36, a ball-type valve body 39 that can be seated on the valve seat 38, and a pressure regulating spring that biases the valve body 39 in a seating direction with the valve seat 38 with a predetermined set load. 40 and an annular retainer 41 that supports the fixed end of the pressure regulating spring 40 are accommodated. The retainer 41 is press-fitted and fixed to the inner peripheral surface of the valve chamber 42 and is engaged with the opening of the valve chamber 42. The retaining ring 46 is retained by the retaining ring 46.

  The valve housing 36 is fitted and fixed to a fitting hole 43 provided in the mounting base member 2 so as to open on the lower surface thereof with the valve hole 37 facing upward, and the valve hole 37 is fixed to the ceiling of the fitting hole 43. It communicates with the pressure regulating path upstream portion 35a through a through hole 44 provided in the wall. Thus, the through hole 44, the valve hole 37, and the valve chamber 42 constitute the pressure regulating path downstream portion 35b.

  Further, the attachment base member 2 is formed with a bag-like recess 45 that branches from the pressure regulating path 35 upstream from the regulator valve R. In the illustrated example, the bag-like recess 45 is disposed on an extension line on the downstream end side of the pressure regulating path upstream portion 35a. Therefore, when the mounting base member 2 is molded, the fuel passage 28 in the fuel take-out pipe 12, the pressure regulating The road upstream portion 35a and the bag-like recess 45 can be formed by a common core.

  The fuel discharge pipe 30 is disposed on one side of the upper end surface of the upper bearing bracket 18, and a power supply terminal 47 of the electric motor E is projected on the other side. On the other hand, the mounting base member 2 is integrally formed with a power feeding coupler 48 protruding from the upper surface thereof, and the connection terminal 49 in the coupler 48 and the power feeding terminal 47 are connected via the relay conductor 50.

  The downstream end of the pressure regulating path 35, that is, the lower open end of the valve chamber 42 of the regulator valve R is directed to the upper surface 18a of the upper bearing bracket 18 on which the power supply terminal 47 projects, that is, the upper surface of the electric pump Ep. The fuel discharged from the valve chamber 42 falls on the upper surface 18 a of the upper bearing bracket 18 around the power supply terminal 47. In order to recirculate the dropped fuel into the fuel tank T, a notch window 59 is provided on the peripheral wall of the upper pump holder 3A.

  Thus, when the electric motor E is operated, the pump impeller 24 is rotationally driven by the rotor shaft 20a. Along with this, the fuel in the fuel tank T is sucked into the pump chamber 22 from the suction port 25 while being filtered by the fuel strainer 4, pressurized by the pump impeller 24, and pumped into the stator 17 from the discharge port 27, and the final discharge port 34 To the fuel injection valve I through the fuel discharge pipe 30 and the fuel take-out pipe 12, that is, the fuel passage 28.

  Meanwhile, since the pressure of the fuel passage 28, that is, the discharge pressure of the electric pump Ep acts on the valve body 39 of the regulator valve R via the pressure adjusting passage upstream portion 35a, if the discharge pressure of the electric pump Ep exceeds a predetermined value, When the body 39 opens against the set load of the pressure adjusting spring 40, a part of the fuel in the fuel passage 28 is discharged to the valve chamber 42 side, and the pressure in the fuel passage 28 returns to a predetermined value, the valve body 39 is closed again by the set load of the pressure regulating spring 40. Thus, the pressure in the fuel passage 28 is automatically adjusted to a predetermined value, so that the fuel injection pressure from the fuel injection valve I is properly controlled.

  The fuel discharged from the valve chamber 42 of the regulator valve R falls on the upper surface 18a of the upper bearing bracket 18 around the power supply terminal 47, that is, the upper surface of the electric pump Ep, and passes through the notch window 59 of the upper pump holder 3A. To return to the fuel tank T. Therefore, since the periphery of the power supply terminal 47 is washed all the time with the fuel discharged from the regulator valve R, the fuel does not stay around the power supply terminal 47, and the power supply terminal 47 of the power supply terminal 47 due to moisture contained in the retained fuel does not stay. Corrosion can be prevented in advance.

  Further, the fuel that has fallen on the upper surface 18a of the upper bearing bracket 18 is kinetic energy attenuated there, and then gently flows down from the notch window 59 of the upper pump holder 3A onto the stored fuel in the fuel tank T. Therefore, the falling sound of fuel can be prevented.

  Further, if the discharge pressure pulsates during discharge of fuel from the electric pump Ep to the fuel passage 28, the pulsation is transmitted to the pressure regulating path upstream portion 35a side, but before reaching the regulator valve R, the regulator valve It transmits to the bag-like recessed part 45 branched from before R, and is attenuate | damped by colliding with the inner wall. As a result, vibration of the valve body 39 of the regulator valve R due to the pulsation of the discharge pressure of the electric pump Ep can be prevented, an appropriate pressure regulating function of the regulator valve R can be ensured, and the fuel of the fuel injection valve I can be secured. The injection pressure can be stabilized.

  Further, pressure pulsation may be generated in the fuel passage 28 even when the fuel injection valve I is opened and closed. The pulsation can also be attenuated by the same action as described above, and the regulator valve R can be opened and closed. Although pressure pulsation may occur, the pulsation can also be attenuated by the same action as described above.

  Now, the electric pump holding device H will be described with reference to FIGS. 1 and 3 to 7. In the drawing, the electric pump Ep is omitted for easy understanding of the structure of the electric pump holding device H.

  The electric pump holding device H includes a cylindrical upper pump holder 3A that is integrally formed on the lower surface of the mounting base member 2 and is fitted to the outer peripheral surface of the upper half of the electric pump Ep, and the lower half of the electric pump Ep. And a lower pump holder 3B on a bottomed cylinder that supports the lower surface thereof. The upper pump holder 3A is made of synthetic resin and is integrally formed with the mounting base member 2, and the lower pump holder 3B is also made of synthetic resin. Both the pump holders 3A and 3B are formed to have the same inner and outer diameters, and face each other when they are fitted to the outer periphery of the electric pump Ep (see FIG. 2). ing.

  The lower pump holder 3B is integrally formed with T-shaped locking claws 55, 55 that protrude from the upper end surface at equal intervals in the circumferential direction. Each locking claw 55 is formed so that the inner side surface and the outer side surface thereof are continuous with the inner peripheral surface and the outer peripheral surface of the lower pump holder 3B, respectively, and thus the cross section has an arc shape and the outer peripheral surface of the electric pump Ep. It is adapted to. Further, as clearly shown in FIG. 3, the upper end surface of each locking claw 55 is formed as a tapered surface 55a inclined toward the inner surface.

  An opening 57 through which the connecting portion of the fuel pump P and the fuel strainer 4 passes is provided in the bottom wall of the lower pump holder 3B.

  On the other hand, the upper pump holder 3A has a plurality of T-shaped locking grooves 56 and 56 corresponding to the locking claws 55 and 55, which are opened at a circumferentially equal interval in the lower end surface, and the locking grooves 56. And a vertical slit 58 having an upper end closed and an upper end closed. Further, the upper pump holder 3A is provided with a notch-shaped discharge window 59 that opens the upper surface of the electric motor Ep near the power supply terminal 47 so that the fuel discharged from the regulator valve R and dropped around the power supply terminal 47 can be removed. It can be returned to the fuel tank T through the discharge window 59. Further, the relay conductor 50 that connects between the power supply terminal 47 and the coupler terminal 49 is disposed so as to pass through the discharge window 59 (see FIG. 2).

  Further, as clearly shown in FIG. 7, the butted end portions of the upper and lower pump holders 3A and 3B are formed in an arc shape in a cross section orthogonal to the axis of both pump holders 3A and 3B and are press-fitted to each other. A plurality of stamping fitting portions 60, 60 are provided. Each indicia fitting portion 60 includes an arcuate fitting wall 61 protruding from the radially inner half of the lower end surface of the upper pump holder 3A, and an upper portion of the lower pump holder 3B corresponding to the fitting wall 61. It is comprised by the circular arc-shaped fitting recessed part 62 formed in the radial direction outer side half part of an end surface.

  Next, the operation of the electric pump holding device H will be described.

  In holding the electric pump Ep by the electric pump holding device H, first, the electric pump Ep is fitted to the inner peripheral surface of the upper pump holder 3A, and the fuel discharge pipe 30 is fitted into the fitting hole 29 of the mounting base member 2. The relay conductor 50 is connected to the power supply terminal 47 through the seal member 32.

  Next, as shown in FIGS. 3 and 5, the lower pump holder 3B is fitted to the lower outer peripheral surface of the electric pump Ep at the corresponding position of the T-shaped locking claws 55, 55 and the locking grooves 56, 56. I will let you. Then, since the tapered surface 55a at the upper end of each locking claw 55 comes into contact with the lower end portion of the upper pump holder 3A, the locking claws 55, 55 are pushed outward in the radial direction. As soon as it rides on the outer peripheral surface of the holder 3A and reaches the fitting position with the locking grooves 56, 56, the elastic restoring force of its own inward in the radial direction results in FIGS. As shown in the figure, the engaging grooves 56 and 56 are engaged with each other. At the same time, the opposing end portions of the two pump holders 3A and 3B are abutted with each other and fitted with the arc-shaped fitting walls 61 of these opposing end portions. The mating recess 62 is press-fitted and fitted as shown in FIG.

  Thus, the upper and lower pump holders 3A, 3B coupled by engagement of the locking claws 55, 55 and the locking grooves 56, 56 can accommodate and hold the electric pump Ep in cooperation with each other. Therefore, since the electric pump holding device H is composed of two members, the upper pump holder 3A and the lower pump holder 3B, the number of parts is extremely small and the structure is simple. Moreover, since the engagement of the locking claws 55 and 55 and the locking grooves 56 and 56 is only once, the number of assembling steps is very small, whereby the electric pump holding device H can be obtained inexpensively.

  Further, according to the engagement of the T-shaped locking claws 55 and 55 and the locking grooves 56 and 56, there is no overlap between the locking claws 55 and 55 and the peripheral walls of other pump holders. In the engaging portions of the claws 55, 55 and the locking grooves 56, 56, it is possible to eliminate the formation of a protruding portion on the outer periphery, which can contribute to the compactness of the electric pump holding device H.

  Further, the opposite end portions of the pump holders 3A and 3B having the same diameter are abutted, and the inner and outer surfaces of the locking claws 55 and 55 are continuous with the outer peripheral surface of the lower pump holder 3B. The electric pump Ep can be covered in a wide range by the pump holders 3A and 3B, and the protrusions on the outer circumferences of both the pump holders 3A and 3B can be eliminated, so that the electric pump holding device H can be made more compact. Can contribute.

  Further, since each locking claw 55 is provided with an inwardly tapered surface 55a at the upper end, when the two pump holders 3A and 3B approach each other, the upper pump of each locking claw 55 is guided by the guiding action of the tapered surface 55a. The holder 3 </ b> A can be smoothly and smoothly run on the outer peripheral surface, and the engaging operation of the engaging claws 55 and 55 with the engaging grooves 56 and 56 can be easily and reliably performed.

  Further, the opposite end portions of both pump holders 3A and 3B are firmly coupled via a seal fitting portion 60 formed by press-fitting of the fitting wall 61 and the fitting recess 62, whereby both pump holders 3A and 3B are connected. Since the relative rotation of 3B can be surely prevented, even if there is some play between the engaging claws 55, 55 and the engaging grooves 56, 56 that are engaged with each other, both pump holders 3A caused by the play. , 3B can prevent mutual backlash.

  Further, since the upper pump holder 3A is provided with a longitudinal slit 58 opened at the bottom surface of each T-shaped locking groove 56, the slit of the peripheral wall is absorbed by the slit 58 when the upper pump holder 3A is molded. Thus, the molding accuracy of the upper pump holder 3A can be improved, and the dimensional errors between the locking claws 55 and 55 and the locking grooves 56 and 56 can be absorbed by the expansion and contraction of the slit 58.

  Next, a second embodiment of the present invention shown in FIGS. 8 and 9 will be described.

  In the second embodiment, the lateral width of the longitudinally extending portions of the locking claw 55 and the locking groove 56 is larger than that of the previous embodiment, and the front end surface of the locking claw 55 is at the center. Is provided with a vertical slit 58 that reaches the middle of the upper pump holder 3A.

  Since the other configuration is the same as that of the previous embodiment, portions corresponding to those of the previous embodiment are denoted by the same reference numerals in FIGS. 8 and 9 and redundant description is omitted.

  Also according to the second embodiment, the same effect as the previous embodiment can be exhibited.

  The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention. For example, in this second embodiment, the vertical relationship between the locking claw 55 and the locking groove 56 and the vertical relationship between the fitting wall 61 and the fitting recess 62 that constitute the stamp fitting portion 60 are the same as those in the above two embodiments. The reverse is also possible. That is, the locking claw 55 and the fitting recess 62 can be provided in the upper pump holder 3A, and the locking groove 56 and the fitting wall 61 can be provided in the lower pump holder 3B.

The perspective view of a fuel supply module provided with the electric pump holding | maintenance apparatus which concerns on 1st Example of this invention. The longitudinal cross-sectional view which shows the fuel supply module in the attachment state to a fuel tank. The longitudinal cross-sectional view in the decomposition | disassembly state of the said electric pump holding | maintenance apparatus. The longitudinal cross-sectional view in the combined state of the electric pump holding | maintenance apparatus. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 3. FIG. 6 is a view taken in the direction of arrow 6 in FIG. 4. FIG. 7 is an enlarged sectional view taken along line 7-7 in FIG. FIG. 6 is a view corresponding to FIG. 5 showing an exploded state of the electric pump holding device according to the second embodiment of the present invention. FIG. 9 is a view corresponding to FIG. 8 showing a coupling state of the electric pump holding device.

Ep ... Electric pump T ... Fuel tank 1 ... Mounting wall (ceiling wall)
2... Mounting base member 12... Fuel take-out pipe 55... Locking claw 55 a. Seal stamping part
61... Fitting wall
62... Fitting recess

Claims (5)

The fuel in the fuel tank (T) is pumped up to the lower surface of the mounting base member (2) having the fuel take-out pipe (12) on the outside and attached to the mounting wall (1) of the fuel tank (T). In the electric pump holding device for holding the electric pump (Ep) sent to the pipe (12),
A cylindrical upper pump holder (3A) integrally projecting from the lower surface of the mounting base member (2), and a cylindrical shape for accommodating and holding the electric pump (Ep) in cooperation with the upper pump holder (3A) Lower pump holder (3B),
The opposing end portions of the upper pump holder (3A) and the lower pump holder (3B) are abutted, and one of the abutting end portions protrudes from the end surface to fit the outer peripheral surface of the electric pump (Ep). A locking claw (55) is formed on the other side, and a T-shaped locking groove (56) opened on the end face is formed on the other side, and the locking claw (55) and the locking groove (56) are engaged with each other. Connect the upper and lower pump holders (3A, 3B) to each other,
Abutting end portions of the upper and lower pump holders (3A, 3B) are respectively formed in one and the other of the butting end portions, and are respectively fitted with arcuate fitting walls (61) and fitting recesses. An electric pump characterized in that a seal stamp fitting part (60) made of (62) is partially provided , and the relative rotation of both pump holders (3A, 3B) is prevented by the stamp stamp fitting part (60). Holding device. The electric pump holding device according to claim 1,
The electric pump holding device, wherein the outer diameters of the upper and lower pump holders (3A, 3B) are set equal. The electric pump holding device according to claim 2,
The electric pump holding device, wherein the locking claw (55) is formed such that an outer surface thereof is continuous with an outer peripheral surface of a pump holder having the locking claw (55). In the electric pump holding device according to any one of claims 1 to 3,
A slit (58) that opens in the bottom surface of the locking groove (56) is formed in the pump holder having the locking groove (56), or a slit that opens in the front end surface of the locking claw (55). (58) is formed, The electric pump holding | maintenance apparatus characterized by the above-mentioned. In the electric pump holding device according to any one of claims 1 to 4,
The electric pump holding device, wherein the front end surface of the locking claw (55) is formed into a tapered surface (55a) inclined toward the inner surface of the locking claw (55).

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