FUEL TANK CAP

Abstract

Fuel tank lid (10), with: a cover component (22) designed to close an opening (13) of the fuel tank (10); and a connecting component (24) designed to be connected to the cover component (22) in such a way that it is movable in an upward / downward direction, wherein: a plurality of tubular sections (42, 43) extending in the upward / downward direction are formed side by side on the cover component (22); at least one column-shaped section (160) extending in the upward / downward direction is formed on the connecting component (24); the at least one column-shaped section (160) is inserted into at least one of the majority of the tubular sections (42, 43) in such a way that it is movable in the upward / downward direction; the majority of the tubular sections (42, 43) comprise two tubular sections (42, 43) such that opposite parts of the two tubular sections (42, 43) are connected to each other via a connecting section (42b, 42c, 45); and in which an axial length of the connecting section (42b, 42c, 45) is equal to an axial length of each of the plurality of the tubular sections (42, 43) that are connected to each other via the connecting section (42b, 42c, 45).

Description

Technical field

[0001] The technology disclosed in the present description relates to a lid for a fuel tank. background

[0002] For example, a fuel supply device for supplying fuel within a fuel tank installed in a vehicle, such as an automobile or the like, to an internal combustion engine, i.e., a motor, is described, for example, in JP 2017-166472A. The technology described in JP 2017-166472A incorporates a fuel tank cover comprising a cover component designed to close an opening in the fuel tank and a connecting component that is linked to the cover component in such a way that it is movable in the up / down direction. Tubular sections extending in the up / down direction are formed on the cover component. Columnar sections extending in the up / down direction are formed on the connecting component.The column-shaped sections are inserted into the tubular sections in such a way that they are movable in the upward / downward direction. A substantial part of the cover component and a substantial part of the connecting component are made of resin. WO 2017 / 141596 A1 discloses a further fuel supply device. Summary of the invention Problem to be solved by the invention

[0003] If a fuel tank lid deforms when an external force is applied to it in the event of a vehicle collision, a fuel leak may occur. It is therefore desirable to suppress deformation of the lid due to the external force. JP 2017-166472A does not describe a structure for suppressing deformation of the lid when an external force is applied in the event of a vehicle collision. Furthermore, factors contributing to the deformation of the lid may include a lack of strength in the tubular sections or a concentration of stress on these sections. Additionally, the contact areas of the columnar sections, which are in surface contact with the tubular sections when they expand or contract, are large, and the sliding resistance is high.

[0004] One problem to be solved by the technology disclosed in the present description is to provide a lid for a fuel tank which is capable of suppressing deformation of a lid component due to an external force. Means to solve the problem

[0005] The problem described above can be solved by the technology disclosed in the present description.

[0006] A first aspect is a lid for a fuel tank according to claim 1.

[0007] According to the first aspect, the strength of the two tubular sections can be improved because the opposing parts of the two tubular sections are connected to each other on the cover component via the connecting section. It is therefore possible to suppress deformation of the cover component due to an external force.

[0008] A second aspect is the cover for the fuel tank according to the first aspect, where the connecting section is a bridge section that is installed between the opposing parts of the two tubular sections, where the opposing parts are spaced apart from each other.

[0009] According to the second aspect, it is possible to improve the strength of the two tubular sections that are in a separate positional relationship.

[0010] A third aspect is the lid for the fuel tank according to the first aspect, in which the two tubular sections are arranged adjacent to each other and the connecting section is a common wall section that divides the opposite parts of the two tubular sections.

[0011] According to the third aspect, it is possible to improve the strength of the two tubular sections that are arranged in a close positional relationship.

[0012] A fourth aspect is the cover component for the fuel tank according to one of the first to third aspects, in which a circular arc wall section in a circular shape extending radially outwards can be formed on at least one part of the at least one tubular section of the majority of the tubular sections.

[0013] According to the fourth aspect, the load concentration exerted on the tubular section(s) can be reduced by the circular arc wall section.

[0014] A fifth aspect is the lid for the fuel tank according to the fourth aspect, where the circular arc wall section can be designed to have a circular shape around an axis of the tubular section.

[0015] According to the fifth aspect, the load concentration exerted on the tubular section of the circular arc wall section can be further reduced.

[0016] A sixth aspect is the cover for the fuel tank according to one of the first to fifth aspects, in which rib-like sections, extending in an axial direction, may be formed on an inner surface of at least one tubular section of the majority of the tubular sections.

[0017] According to the sixth aspect, the strength of the tubular sections can be improved by the rib-like sections. Furthermore, in the tubular sections into which the columnar sections are inserted, the sliding resistance of the columnar sections relative to the tubular sections can be reduced. Additionally, in the tubular section into which a helical spring is inserted, the sliding resistance of the helical spring relative to the tubular section can be reduced.

[0018] A seventh aspect is a fuel tank cover comprising a cover component designed to close an opening of the fuel tank and a connecting component designed to be connected to the cover component in such a way as to be movable in an upward / downward direction. Tubular sections extending in an upward / downward direction may be formed on the cover component. Columnar sections extending in an upward / downward direction may be formed on the connecting component. The columnar sections may be inserted into the tubular sections in such a way as to be movable in the upward / downward direction. A circular arc wall section in a circular shape extending radially outward may be formed on at least one part of the tubular sections.

[0019] According to the seventh aspect, the load concentration exerted on the tubular sections can be reduced by the circular arc wall section. The deformation of the cover component due to the external force can thus be reduced.

[0020] An eighth aspect is the lid for the fuel tank according to the seventh aspect, where the circular arc wall section can be designed to have a circular arc shape around the axis of the tubular section.

[0021] According to the eighth aspect, the load concentration exerted on the tubular section of the circular wall section can be further reduced.

[0022] A ninth aspect is a telescopic connecting structure according to claim 7.

[0023] According to the ninth aspect, the contact area between the columnar and tubular sections can be reduced if the sliding guide rib allows the columnar sections to slide smoothly as they expand and contract. This also reduces the sliding resistance of the columnar section relative to the tubular section. Therefore, the sliding mobility of the columnar section relative to the tubular section can be improved, allowing the columnar section to slide smoothly. Furthermore, the strength of the tubular section can be enhanced by the sliding guide rib.

[0024] A tenth aspect is the telescopic connection structure according to the ninth aspect, in which an outer surface of the columnar section has a flat surface that is linear in cross-section orthogonal to the axial direction. The sliding guide rib can be arranged in a position opposite the flat surface.

[0025] According to the tenth aspect, since the sliding guide rib contacts the flat surface of the columnar section in a slidingly displaceable manner, the sliding guide rib can guide the columnar section in a slidingly displaceable manner more stably than if the sliding guide rib contacted a non-flat surface in a slidingly displaceable manner.

[0026] An eleventh aspect is the telescopic connecting structure according to the tenth aspect, in which the number of at least one sliding guide rib opposite the flat surface is more than one.

[0027] According to the eleventh aspect, it is possible to prevent a displacement of the columnar sections relative to the tubular sections in the circumferential direction around the axis and to prevent a reduction in the sliding displacement of the columnar sections due to a displacement.

[0028] A twelfth aspect is the telescopic connecting structure according to the eleventh aspect, in which two sliding guide ribs of the majority of the sliding guide ribs, which are opposite the flat surface, can be arranged in positions opposite both ends of the flat surface.

[0029] According to the twelfth aspect, the distance between the two sliding guide ribs can be increased compared to a case where the two sliding guide ribs opposite the flat surface of the columnar section are arranged in positions other than at the two ends of the flat surface. This can reduce the displacement (rotation) of the columnar section in the circumferential direction about the axis with respect to the tubular section.

[0030] A thirteenth aspect is the telescopic structure according to the eleventh or twelfth aspect, in which the outer surface of the columnar section can have four flat surfaces that form a rectangular shape in cross-section orthogonal to the axial direction. The number of at least one sliding guide rib opposite each flat surface can be two. When the columnar section is displaced circumferentially around the axis with respect to the tubular section, each flat surface can contact one of the two sliding guide ribs opposite the corresponding flat surface.

[0031] According to the thirteenth aspect, it is possible to consistently prevent the columnar sections from displacing the tubular sections circumferentially around the axis. Furthermore, it is possible to prevent the protruding corners of the columnar section from engaging with the adjacent sliding guide ribs due to a circumferential displacement of the columnar section relative to the tubular section around the axis. This can prevent a reduction in the sliding displacement of the columnar sections.

[0032] A fourteenth aspect is the telescopic connecting structure according to the thirteenth aspect, in which projecting curved surfaces in a configuration of a projecting circular arc shape in a cross-section orthogonal to the axial direction on at least one of the projecting corners on the outer surface of the column-shaped section, while a recessed curved surface in a configuration of a recessed circular arc shape opposite the projecting curved surface and orthogonal to the axial direction is formed on an inner surface of the tubular section.

[0033] According to the fourteenth aspect, it is possible to reduce the load concentration exerted on the tubular and columnar sections in a radial and axial direction in the event of a vehicle collision. It is also possible to reduce the outer shape of the tubular section relative to the columnar section, or to increase the outer shape of the columnar section relative to the tubular section, by narrowing the distance between the protruding curved surfaces and the recessed curved surfaces.

[0034] A fifteenth aspect is the telescopic connecting structure according to the fourteenth aspect, in which the columnar section can be designed to have an essentially rectangular columnar shape. The average thickness of the tubular section can be greater than the average thickness of the columnar section.

[0035] According to the fifteenth aspect, the strength of the tubular section can be made greater than the strength of the columnar section, so that the tubular sections are prevented from breaking in the event of a vehicle collision. Detailed description of the drawings Fig. Figure 1 is a perspective view showing a fuel supply device according to the first embodiment. Fig. Figure 2 is a front view showing the fuel supply device. Fig. Figure 3 is a rear view showing the fuel supply device. Fig. Figure 4 is a top view showing a pump unit. Fig. Figure 5 is a front view showing a partially cut-out pump unit. Fig. Figure 6 is a rear view of the fuel tank lid with a connecting component in a suspended state. Fig. Figure 7 is a perspective view showing the exploded fuel tank lid. Fig. Figure 8 is a bottom view showing extensive portions of lateral tubular sections of a flanged unit. Fig. Figure 9 is a perspective view showing the exploded connecting component. Fig. Figure 10 is a side view showing a partially cut-away lateral columnar section. Fig. Figure 11 is a rear view showing a partially cut-away lateral columnar section. Fig. 12 is a cross-sectional view along line XII-XII in Fig. 11. Fig. Figure 13 is a side view showing a suspended state of a partially cut-away lateral columnar section in relation to the lateral tubular section. Fig. Figure 14 is a perspective view showing the fuel supply device according to a second embodiment. Fig. Figure 15 is a side view showing the fuel supply device. Fig. Figure 16 is a rear view showing the fuel supply device. Fig. 17 is a cross-sectional view along line XVII-XVII in Fig. 16. Fig. Figure 18 is a perspective view showing an exploded lid component and a pump unit. Fig. Figure 19 is a cross-sectional view showing the pump unit. Fig. Figure 20 is a lateral cross-sectional view showing a telescopic connecting structure. Fig. Figure 21 is a sectional top view showing the telescopic connection structure. Fig. Figure 22 is a sectional plan view showing the telescopic connecting structure in a state displaced about an axial direction of the column-shaped section. Fig. Figure 23 is a view from below, showing the tubular section of a flanged unit. Fig. Figure 24 is a lateral cross-sectional view showing the tubular section of the flange unit. Fig. Figure 25 is a top view showing a connecting strut. Fig. Figure 26 is a sectional plan view showing the telescopic connection structure according to a third embodiment. Fig. Figure 27 is a sectional plan view showing the telescopic connecting structure in a state displaced about an axial direction of the column-shaped section. Description of embodiments

[0036] The following describes embodiments for carrying out the technology disclosed in the present description with reference to drawings. [FIRST VERSION]

[0037] A first embodiment is described below with reference to the drawings. A fuel tank lid according to the present embodiment can be used as a fuel supply device with a telescopic connecting structure. The fuel supply device can be installed in the fuel tank mounted on a vehicle, such as an automobile or the like, equipped with an engine, such as an internal combustion engine, and can serve to supply fuel from the fuel tank to the engine. Fig. Figure 1 is a perspective view of a fuel supply device. Fig. Figure 2 is a front view of the same. Fig. Figure 3 is a rear view of the same. Fig. 1 to Fig. 3 corresponds to each of the forward / backward / left / right / upward / downward directions of a vehicle. More precisely, a forward / backward direction corresponds to a vehicle length direction. A left / right direction corresponds to a vehicle width direction. An up / downward direction corresponds to a vehicle height direction. The forward / backward and left / right directions of the fuel supply device can be oriented in any direction. [FUEL TANK]

[0038] As in Fig. As shown in Figure 2, a fuel tank 10 can be configured as a hollow container having an upper wall 11 and a lower wall 12. An opening 13 can be configured as a circular hole in the upper wall 11. The fuel tank 10 can be mounted on a vehicle such that the upper wall 11 and the lower wall 12 extend horizontally. The fuel tank 10 can be made of resin and can deform in response to a change in the internal tank pressure (mainly expanding or contracting in the upward / downward direction). For example, gasoline can be stored as a liquid fuel in the fuel tank 10. [FUEL SUPPLY DEVICE]

[0039] As in Fig. As shown in Figure 1, a fuel supply device 20 can comprise a flange unit 22, a connecting component 24, and a pump unit 26. The connecting component 24 can be connected to the flange unit 22 in such a way that it is movable in the upward / downward direction, and the pump unit 26 can be connected to the connecting component 24 in such a way that it is rotatable in the upward / downward direction. [FLANGE UNIT 22]

[0040] The flange unit 22 can include a flange main body 28 and a fuel vapor valve 30. [FLANGE MAIN BODY 28]

[0041] The flange main body 28 can be formed mainly from a cover plate 32 having a circular plate shape. The flange main body 28 can be made of resin. As shown in Fig. As shown in Figure 2, a tubular mounting section 33, having a short cylindrical shape, can be formed concentrically on a lower surface of the cover plate 32. An annular, disc-like flange section 34, extending radially outward from the tubular mounting section 33, can be formed around an outer circumference of the cover plate 32. A valve housing 35, having a cylindrical shape with a closed top, can be formed concentrically on the cover plate 32. An evaporation opening 36, projecting radially outward, can be formed at an upper end of the valve housing 35.

[0042] As in Fig. As shown in Figure 1, a fuel outlet opening 37, a first electrical connector section 38, and a second electrical connector section 39 can be provided on the cover plate 32. The fuel outlet opening 37 can be configured as a straight tube extending through the cover plate 32 in an upward / downward direction. Furthermore, a predetermined number of metal terminals can be arranged in both electrical connector sections 38 and 39. The fuel outlet opening 37 and both electrical connector sections 38 and 39 can be distributed around the valve body 35.

[0043] As in Fig. As shown in Figure 3, a spacer section 41 can be formed on a rear side of the lower surface of the cover plate 32. The spacer section 41 can have a central tubular section 42 and two left and right lateral tubular sections 43, each having a tubular shape extending in the upward / downward direction. The central tubular section 42 and both lateral tubular sections 43 can be symmetrically formed. Two left and right curved wall sections 44 can be symmetrically formed on outer lateral sections of both lateral tubular sections 43. The central tubular section 42 and both lateral tubular sections 43 can be arranged side by side in the left / right direction.Rear side wall sections of the central tubular section 42 and both lateral tubular sections 43 and both curved wall sections 44 can be continuous with a rear half of the tubular mounting section 33 of the flange main body 28. Both curved wall sections 44 can be formed in a substantially triangular shape, tapering downwards from the tubular mounting section 33 when viewed from the rear. [FUEL VAPOR VALVE 30]

[0044] As in Fig. As shown in Figure 2, the fuel vapor valve 30 can be mounted within the valve housing 35 of the flange main body 28 such that its upper section is enclosed within it. The fuel vapor valve 30 can be an integrated valve, for example, one that includes a fuel vapor control valve and a full-tank control valve. The fuel vapor control valve closes when the internal pressure in the fuel tank is less than the predetermined value and opens when the internal pressure exceeds the predetermined value. Furthermore, the full-tank control valve opens when the fuel tank 10 is not full and closes when it is full. [Connecting Component 24]

[0045] As in Fig. As shown in Figure 3, the connecting component 24 can have a main connecting body 46, a spring guide 47, and left and right lateral column-shaped sections 48. The main connecting body 46 can be made of resin and can be formed in a flat block shape in the forward / backward direction. The connecting component 24 can have a horizontal upper end face 46a. An engagement shaft hole 50, extending through the forward / backward direction, can be formed in a lower section of the main connecting body 46. The spring guide 47 can be configured as a strut on the center of the upper end face 46a of the main connecting body 46. Both lateral column-shaped sections 48 can be symmetrical and rectangular in shape, located at both the left and right ends of the upper end face 46a of the main connecting body 46. [Connecting component 24 - Attachment to flange unit 22]

[0046] A metallic cylindrical helical spring 52 can be attached to the spring guide 47 of the connecting component 24. In this state, the spring guide 47 of the connecting component 24 can be inserted into the central tubular section 42 of the flange main body 28 together with the helical spring 52. Furthermore, both lateral column-shaped sections 48 of the connecting component 24 can be inserted into both lateral tubular sections 43 of the flange main body 28. Both lateral tubular sections 43 and both lateral column-shaped sections 48 can also be snap-fitted together so that they are relatively movable in the axial direction within a predetermined range. Additionally, the flange main body 28 and the connecting component 24 can be pre-tensioned by the helical spring 52 in a direction that separates them. [PUMP UNIT 26]

[0047] As in Fig. As shown in Figure 2, the pump unit 26 can include a lower tank 54, a transmitter level 56, a fuel pump 58, a pump housing 60, a pressure regulator 62 and a regulator housing 64. Fig. Figure 4 shows a top view depicting a pump unit. Fig. Figure 5 is a partially cropped front view of the same. The transmitter level 56 is in Fig. 4 and Fig. 5 not shown. [SUPER 54]

[0048] As in Fig. As shown in Figure 5, the lower tank 54 can have a lower tank main body 66, a fuel filter 67 and a cover component 68. [Subject Body 66]

[0049] The lower tank main body 66 can be made of resin and be designed in an inverted flat box shape with the lower side open. The lower tank main body 66 can be designed such that, in a top view, it has an elongated rectangular shape that is elongated in the left / right direction (see Fig. 4) A rectangular opening 70 can be formed in a right-hand position on the top of the lower tank main body 66. A fuel-receiving tubular section 71, having a rectangular tubular shape extending upwards, can be formed on the left rear side of the top of the lower tank main body 66 (see Fig. 4) The top of the fuel-receiving tubular section 71 is open.

[0050] As in Fig. As shown in Figure 3, an engagement shaft 72, projecting rearward, can be configured in a leftward position on a lower section of the rear side of the lower tank main body 66 (see Figure 3). Fig. 4) Furthermore, a plate-like upright wall 73, facing in the forward / backward direction, can be formed on the right rear section of the top of the lower tank main body 66. [FUEL FILTER 67]

[0051] As in Fig. As shown in Figure 5, the fuel filter 67 can comprise a filter component 75, an inner frame component 76, and a connecting pipe 77. The filter component 75 can be formed in a hollow bag shape with a filter material made of resin fiber. The contour of the filter component 75 can be designed to have an elongated rectangular shape that is flat in the upward / downward direction, so that its longitudinal direction corresponds to the left / right direction.

[0052] The inner frame component 76 can be made of resin and have a skeletal structure that holds the filter component 75 in an inflated position in the upward / downward direction. Furthermore, the connecting tube 77 can be made of resin and have a vertical, round shape. The connecting tube 77 can be connected to the right-hand section of the inner frame component 76 by heat fusing. An upper side of the filter component 75 can be nested between the inner frame component 76 and the connecting tube 77. The inner and outer sides of the filter component 75 can be connected via the connecting tube 77.

[0053] The filter component 75 can be arranged to close the lower opening of the lower tank main body 66. A fuel storage chamber 79 for storing fuel can be defined between the lower tank main body 66 and the filter component 75. The connecting pipe 77 can be arranged within the opening 70 of the lower tank main body 66. An annular space between the opening 70 and the connecting pipe 77 can be defined as a fuel flow inlet 80. The fuel in the fuel tank 10 (see Fig. 2) can flow into the fuel storage chamber 79 through the river inlet 80 by its own weight.

[0054] The cover component 68 can be configured as an elongated rectangular plate or a grid plate having a plurality of openings. The cover component 68 can be made of resin. The cover component 68 can be attached to the lower tank main body 66 by a snap-fit ​​connection. A circumferential rim of the filter component 75 can be nested between circumferential rims of the lower tank main body 66 and the cover component 68. The cover component 68 can cover a lower side of the filter component 75. A plurality of hemispherical projections 81 can be formed on a lower side of the cover component 68 in a distributed manner. [TRANSMITTER LEVEL 56]

[0055] As in Fig. As shown in Figure 3, the transmitter level 56 can have a level main body 84, an arm 85, and a float 86. The level main body 84 can be attached to a rear side of the upright wall 73 of the lower tank main body 66. A base end section of the arm 85 can be attached to a rotating section 88, which is provided on the level main body 84 so that it can rotate about a horizontal axis. The float 86 can be attached to a free end section of the arm 85. The transmitter level 56 is a liquid level gauge configured to detect a remaining quantity of fuel in the fuel tank 10, i.e., a position of the liquid level. [FUEL PUMP 58]

[0056] As in Fig. As shown in Figure 5, the fuel pump 58 can be an electric fuel pump designed in a substantially cylindrical columnar shape. The fuel pump 58 can have a motor section and a pump section and can serve to draw in and pressurize fuel and to discharge the fuel. The fuel pump 58 can have a fuel intake port 90 on a pump section end (right end) and a fuel discharge port 91 on a motor section end (left end). Furthermore, an electrical connector can be provided on the motor section end of the fuel pump 58. For example, a brushless DC motor can be used for the motor section. [PUMP HOUSING 60]

[0057] As in Fig. As shown in Figure 5, the pump housing 60 can have a main body 94 formed in a hollow cylindrical shape extending in the left / right direction. The pump housing 60 can be made of resin. An end plate 95 can be formed at an opening on one side (a left-side opening) of the main body 94 for closing the opening. A discharge pipe section 96, formed in a straight tube extending through the end plate 95, can be located at the center of the end plate 95. A resin pipe connection 98 in a bent shape can be welded to a pointed end of the discharge pipe section 96. Furthermore, a connecting tubular section 100, having a cylindrical shape projecting upwards, can be positioned towards the pointed end of the discharge pipe section 96.The inner side of the connecting tubular section 100 can be in contact with the inner side of the delivery pipe section 96. The fuel pump 58 can be housed in the main body of the casing 94 with the fuel delivery port 91 oriented to the left. The fuel delivery port 91 can be connected to the base end (right end) section of the delivery pipe section 96.

[0058] As in Fig. As shown in Figure 4, a pair of front and rear elastic support elements 102, extending in opposite directions, can be formed on an upper end of the center of the main housing body 94 in the axial direction of the main housing body 94 such that they are symmetrical in the forward / backward direction. Both elastic support elements 102 can be strip-shaped and can be formed essentially in an S-shape in a plan view. The pointed ends of both elastic support elements 102 can be snap-fitted to both the front and rear sides of the main housing body 66. The pump housing 60 can be elastically supported on the main housing body 66 in a horizontal, i.e., laterally positioned, state by both elastic support elements 102.

[0059] As in Fig. As shown in Figure 5, a resin cap 104 can be attached to the main housing body 94 by snap-fit ​​connection such that it closes a right-end opening surface of the main housing body 94. An intake pipe section 105, formed in a bent-tube shape, can be formed on the cap 104. One end (left end) of the intake pipe section 105 can be connected to the fuel intake port 90 of the fuel pump 58. The other end (lower end) of the intake pipe section 105 can be connected to the connecting pipe 77 of the fuel filter 67. The intake pipe section 105 can be attached to the connecting pipe 77 by snap-fit ​​connection.

[0060] One end of a fuel delivery tube 107, which is formed from a flexible resin tube, can be connected to the pipe connection 98 by a press fit. A nozzle component 109 can be connected to the other end of the fuel delivery tube 107 by a press fit (see Fig. 4) The nozzle component 109 can be attached to a left rear section of the fuel-receiving tubular section 71 by means of a snap connection (see Fig. 3) The fuel delivery pipe 107 may be bent in an inverted U-shape. [PRESSURE REGULATOR 62]

[0061] As in Fig. As shown in Figure 5, the contour of the pressure regulator 62 can be formed in an essentially cylindrical columnar shape. The pressure regulator 62 serves to control the pressure of the pressurized fuel delivered by the fuel pump 58, i.e., the pressure of fuel to be supplied to an engine at a predetermined pressure. [CONTROLLER HOUSING 64]

[0062] The pressure regulator housing 64 can be made of resin and configured to have a hollow cylindrical container shape. The regulator housing 64 can have a first housing half 112 and a second housing half 113, which are divided in the axial direction. The two housing halves 112, 113 can be joined by a snap-fit ​​connection. The pressure regulator 62 can be housed within the regulator housing 64. The regulator housing 64 can be arranged in a laterally positioned state, in which its axial direction is horizontal.

[0063] A cylindrical connected tubular section 115, projecting downwards, and a fuel delivery section 116, projecting outwards tangentially from the upper end, can be formed on the first housing half 112. The connected tubular section 115 and the fuel delivery section 116 can communicate with a fuel inlet port of the pressure regulator 62 within the first housing half 112.

[0064] A delivery pipe section 118, projecting downwards from one end opposite the first housing half 112, can be formed on the second housing half 113. The delivery pipe section 118 can be connected to an excess fuel discharge port of the pressure regulator 62 within the second housing half 113. The fuel delivery section 116 serves to discharge the fuel whose pressure is regulated in the pressure regulator 62. Excess fuel from the pressure regulator 62 can be discharged through the delivery pipe section 118.

[0065] The connected tubular section 115 of the regulator housing 64 can be positioned to connect with the connecting tubular section 100 of the pump housing 60. An O-ring 119 can be inserted between the connecting tubular section 100 and the connected tubular section 115 to elastically seal any gap between them. Furthermore, the fuel delivery section 116 can be oriented from the upper end of the first housing half 112 in the rear left direction (see Fig. 4) Furthermore, the discharge pipe section 118 can be oriented towards the inside of the fuel-receiving tubular section 71 of the lower tank main body 66 (see Fig. 3).

[0066] A check valve 120 can be incorporated into the connecting tubular section 100 of the pump housing 60. The check valve 120 can be a residual pressure maintenance check valve, which serves to prevent backflow of pressurized fuel in the connecting tubular section 100. The check valve 120 can have a valve guide 121 and a valve body 122. The valve guide 121 can be fixedly arranged within the connecting tubular section 100. The valve body 122 can be arranged in the valve guide 121 such that it is concentrically and axially movable (upward / downward direction), i.e., so that it opens and closes. The valve body 122 can close by its own weight and open by fuel pressure. [ATTACHMENT OF PUMP UNIT 26 TO CONNECTING COMPONENT 24]

[0067] As in Fig. As shown in Figure 3, an engagement shaft 72 of the lower tank main body 66 can be rotatably engaged in an engagement shaft hole 50 of the connecting main body 46. This allows the pump unit 26 to move with the connecting component 24 in the upward / downward direction (see directions indicated by arrows Y1, Y2 in Figure 3). Fig. 3 are specified) be rotatably connected. The fuel outlet opening 37 in the flange main body 28 can be connected to the fuel delivery section 116 on the control housing 64 via a delivery fuel pipe 124 (see Fig. 2) The fuel delivery pipe 124 can be made of a flexible resin hose or the like. The fuel delivery pipe 124 can also be in the form of a bellows.

[0068] As in Fig. As shown in Figure 2, the first electrical connector section 38 on the flange main body 28 can be electrically connected to an electrical connector for the fuel pump 58 via a first wiring harness 126. The second electrical connector section 39 on the flange main body 28 can be connected to the level main body 84 of the transmitter level 56 (see Figure 2). Fig. 3) be electrically connected via a second cable harness 128. The first cable harness 126 and the second cable harness 128 can be properly hooked onto a wiring hook section that is integrally formed with an adjacent resin component. [INSTALLATION OF THE FUEL SUPPLY DEVICE 20]

[0069] The fuel supply device 20 is extended when installed in the fuel tank 10. In this state, the connecting component 24 is suspended by the flange unit 22, while the pump unit 26 is suspended by the connecting component 24. In particular, the connecting component 24 is lowered to its lowest position (farthest position) with respect to the flange unit 22. Furthermore, the pump unit 26 is tilted downwards to the right (see arrow Y1 in Figure 2). Fig. 3) of the connecting component 24 (see two-point catenary curve 26 in Fig. 3) turned.

[0070] The pump unit 26 is then inserted into the opening 13 of the fuel tank 10 from its top while the fuel supply device 20 is still in its extended position. The pump unit 26 is mounted on the lower wall 12 of the fuel tank 10 by positioning it relative to the connecting component 24 in a direction opposite to that in which it is suspended (see arrow Y2 in Figure 1). Fig. 3), is rotated so that it is placed horizontally (see Fig. 2) Furthermore, a rotation limiting mechanism can be provided between the connecting component 24 and the pump unit 26 to limit rotation beyond the horizontal state of the pump unit 26.

[0071] The spacer section 41 of the flange main body 28 is then fitted into the opening 13 of the fuel tank 10, while the flange unit 22 is pressed downwards against the preload force of the coil spring 52. In this state, the flange section 34 of the flange main body 28 is fastened to the upper wall 11 of the fuel tank 10 by means of fasteners (not shown), such as metal fasteners or bolts (see Fig. 2 and Fig. 3), attached. The installation of the fuel supply device 20 on the fuel tank 10 is thus completed, as described above.

[0072] Due to the preload force of the coil spring 52, the pump unit 26 is held in the installed state of the fuel supply device 20 in a state pressed against the lower wall 12 of the fuel tank 10 (see Fig. 2 and Fig. 3) Furthermore, the projections 81 on the cover component 68 abut the lower wall 12 of the fuel tank 10, thus ensuring a flow of fuel between the cover component 68 and the lower wall 12. Additionally, a lower end face 41a of the spacer section 41 of the flange unit 22 faces the upper end face 46a of the main connecting body 46 at a predetermined distance between them (see Fig. 3).

[0073] Furthermore, the fuel tank can deform, i.e., expand or contract, in response to a change in internal tank pressure caused by a change in temperature or fuel quantity. Consequently, the distance between the upper wall 11 and the lower wall 12 of the fuel tank 10 can vary (increase or decrease). In this case, the flange assembly 22 and the connecting element 24 move relative to each other in the upward / downward direction, thus following the change in height of the fuel tank 10. Additionally, if the fuel tank 10 attempts to contract excessively, the spacer section 41 of the flange main body 28 and the connecting main body 46 come into contact with each other, acting as a tension rod.

[0074] Furthermore, a fuel supply pipe leading to an engine is connected to the fuel outlet port 37 of the flange assembly 22. Additionally, external connectors leading to a power source, ECU, etc., are each connected to the first electrical connector section 38 or the second electrical connector section 39. Further on, a fuel vapor piping component leading to a canister is connected to the vaporization port 36. The canister contains adsorbents (for example, activated carbon) capable of adsorbing and desorbing fuel vapor generated within the fuel tank 10. [OPERATION OF THE FUEL SUPPLY DEVICE 20]

[0075] The fuel pump 58 is driven by an external power source. Fuel from inside the fuel tank 10, which flows through the cover component 68, and / or fuel in the fuel storage chamber 79 of the pump unit 26 is drawn in by the fuel pump 58 via the fuel filter 67 and pressurized. The pressurized fuel delivered by the fuel pump 58 flows into the regulator housing 64 via the delivery pipe section 96 of the pump housing 60, and the fuel pressure is regulated by the pressure regulator 62. The pressurized fuel at a regulated pressure is supplied to the engine through the fuel outlet opening 37 of the flange unit 22 via the delivery fuel pipe 124.

[0076] The excess fuel resulting from regulating the fuel pressure using the pressure regulator 62 is discharged through the discharge pipe section 118 on the regulator housing 64 into the fuel-receiving tubular section 71 of the lower tank main body 66. Additionally, a portion of the pressurized fuel delivered by the fuel pump 58 into the discharge pipe section 96 of the pump housing 60 is discharged into the fuel-receiving tubular section 71 of the lower tank main body 66 via the fuel discharge pipe 107. Furthermore, fuel vapor generated in the fuel tank 10 is discharged into the canister when a fuel vapor control valve of the fuel vapor valve 30 opens. [Telescopic connection structure for the fuel tank cover]

[0077] Fig. Figure 6 is a rear view of the fuel tank lid with a connecting component in a suspended state. Fig. Figure 7 is a perspective view of the exploded fuel tank lid. As in Fig. As shown in Figure 6, the fuel tank cap 150 can comprise the flange unit 22, the connecting component 24, and the coil spring 52. Furthermore, telescopic connecting structures 152 can comprise the lateral tubular sections 43 of the flange unit 22 and the lateral columnar sections 48 of the connecting component 24. Since the left and right telescopic connecting structures 152 are symmetrical, the left telescopic connecting structure 152 is mainly described, while the right telescopic connecting structure 152 is either briefly described or not described at all.

[0078] The flange unit 22 corresponds to the "cover component" in this description. Similarly, the connecting component 24 corresponds to the "connecting component" in this description. Similarly, the connecting component 24 and the pump unit 26 correspond to the "internal tank component" in this description. Similarly, the connecting main body 46 corresponds to a "connecting component main body" in this description. Similarly, the central tubular section 42 and the lateral tubular sections 43 correspond to the "tubular sections" in this description. [SIDE TUBE-SHAPED SECTIONS 43 OF THE FLANGE UNIT 22]

[0079] Fig. Figure 8 is a bottom view showing extensive portions of the lateral tubular sections of the flanged unit. As in Fig. As shown in Figure 8, the lateral tubular sections 43 can be formed in a substantially cylindrical shape in a view of the flange unit 22 from below. A plurality of (eight in Fig. 8) Sliding guide ribs 154 project from an inner surface of the lateral tubular sections 43. The sliding guide ribs 154 are arranged in straight lines extending in the axial direction of the lateral tubular sections 43, i.e., in the upward / downward direction (in the direction of the front and back of the blade). Fig. 8), extend, formed. The sliding guide ribs 154 are arranged at predetermined intervals in a circumferential direction. Two adjacent sliding guide ribs 154 are formed in a set such that they are able to abut or be close to two sides of each of the projecting corners of the lateral column-shaped sections 48. It should be noted that the sliding guide ribs 154 correspond to the “rib-like sections” and the “sliding guide ribs” in this description.

[0080] As in Fig. As shown in Figure 6, elongated engagement holes 155, extending in the upward / downward direction, are formed on the rear side walls 43a of the lateral tubular sections 43. Hole edges on the lower end faces of the engagement hole sections 155 are referred to as hole bottom edge sections 156. [CENTRAL TUBE-SHAPED SECTION 42 OF FLANGE UNIT 22]

[0081] As in Fig. As shown in Figure 8, the central tubular section 42 can be formed in a substantially rectangular columnar shape between the two lateral tubular sections 43. A plurality of (four front / back / left / right in Fig. 8) Spring guide ribs 42a project from the inner surface of the central tubular section 42. The spring guide ribs 42a are formed in straight lines extending in the axial direction of the central tubular section 42, i.e., upward / downward. The spring guide ribs 42a are arranged at predetermined intervals in a circumferential direction. The central tubular section 42 and both lateral tubular sections 43 can be formed from resin such that they are integral with the main flange body 28. It should be noted that the spring guide ribs 42a correspond to the "rib-like sections" in this description. Furthermore, a connection structure of the central tubular section 42 and both lateral tubular sections 43 is described later. [SPRING GUIDE 47 FOR THE CONNECTING COMPONENT 24]

[0082] Fig. Figure 9 is a perspective view showing the exploded connecting component. As in Fig. As shown in Figure 9, the spring guide 47 extends in the upward / downward direction across the center of the upper end face 46a of the main connecting body 46. The spring guide 47 can be configured in a plus (+) shape in a top view (see Figure 9). Fig. 8). [SIDE COLUMN-SHAPED SECTIONS 48 OF THE CONNECTING PART 24]

[0083] As in Fig. As shown in Figure 9, each lateral column-shaped section 48 can have a support column section 160 as a main body and a support 162 configured to cover an outer circumference of the support column section 160. Fig. Figure 10 is a side view showing a partially cut-away, columnar lateral section. Fig. Figure 11 is a rear view of the same. Fig. 12 is a cross-sectional view along line XII-XII in Fig. 11. [SUPPORT COLUMN SECTION 160]

[0084] The support column section 160 can be formed in an essentially square column-shaped form on the main connecting body 46 of the connecting component 24. Essentially U-shaped locking grooves 164 can be formed on the lower section on both the left and right sides of the support column section 160 in a symmetrical manner in the right / left direction (see Fig. 11) Furthermore, a rectangular alignment projection 165, located below the locking groove 164, can be formed on the right side of the lower end of the support column section 160 (see Fig. 10) A recessed groove 166, which may have a rectangular groove shape with its front and upper sides open, may be formed on the upper end of the support column section 160. An engagement part 170 may be formed on a rear side wall 167 of the recessed groove 166 (see Fig. 10 and Fig. 11) It should be noted that the support column section 160 corresponds to the “column section” in the present description.

[0085] An outer surface of the support column section 160 has a left surface, a right surface, a front surface, and a rear surface as four flat surfaces which form a rectangular shape in a cross-section orthogonal to the axial direction. The four flat surfaces form straight lines in a cross-section orthogonal to the axial direction.

[0086] As in Fig. As shown in Figure 10, the engagement part 170 has an engagement part main body 171, which is designed to extend upwards from the lower end in a cantilevered manner, and a hook-like engagement claw section 172, which is formed on a pointed end (upper end) of the engagement part main body 171. A rear surface of the engagement part main body 171 is designed to be coplanar with the rear surface 160a of the support column section 160, including the rear side wall 167. The engagement claw section 172 projects rearwards from the rear surface of the rear side wall 167.

[0087] As in Fig. As shown in Figure 11, the main body of the engagement part 171 is formed by creating a substantially inverted U-shaped opening groove 174 in the rear side wall 167 in a cutout manner. The main body of the engagement part 171 is designed such that it is elastically deformable, i.e., flexibly deformable, in an engagement release direction of the engagement claw section 172, i.e., in the direction entering the recessed groove 166 (forward direction) (see two-point catenary curve 171 in Figure 11). Fig. 10). Furthermore, the spring guide 47 and the support column section 160 made of resin can be designed in such a way that they are integrally formed with the connecting main body 46. [HOLDER 162]

[0088] As in Fig. As shown in Figure 9, the brackets 162 can be formed in a substantially square, tubular shape by bending a metal (e.g., stainless steel) sheet material by press forming. The respective outer surfaces of the brackets 162 can have a shape similar to the outer surface of the support column sections 160 (see Figure 9). Fig. 12) The respective outer surfaces of the brackets 162 have a left surface, a right surface, a front surface and a rear surface as four flat surfaces which form a rectangular shape in a cross-section orthogonal to the axial direction. The four flat surfaces form straight lines in a cross-section orthogonal to the axial direction.

[0089] The brackets 162 can be designed to be mounted on the support column sections 160. A counter-recess 176, extending axially from the center of the side plate at a predetermined width, is formed between both circumferential end edges of the bracket 162 (see Fig. 12). The counter recess 176 corresponds to the alignment projection 165 of the support column section 160.

[0090] Window openings 177 in a rectangular hole shape are formed in a symmetrical manner in the center of the upper end of the side plate adjacent to the side plate with the counter-recess 176 of each bracket 162 (see Fig. 10). A locking part 178 is formed on the lower section of the side plate on the side opposite the counter-recess 176 of each holder 162 and is formed in the holder 162 in an obliquely cut and raised manner (see Fig. 11) The locking part 178 is designed in a cantilevered manner with a lower end as a base end and an upper end as a locking end 179. The locking end 179 is bent such that it is folded back towards the side opposite the cutting and raising direction. Furthermore, the upper end of the holder 162 is bent such that the upper end opening is narrowed. [ATTACHMENT OF THE BRACKET 162 TO THE SUPPORT COLUMN SECTION 160]

[0091] As in Fig. As shown in Figure 10, the bracket 162 is attached by sliding it so that it covers the support column section 160. At this moment, when the mating recess 176 of the bracket 162 corresponds to the alignment projection 165 of the support column section 160, the alignment projection 165 of the support column section 160 is relatively movable within the mating recess 176. Its assembly is thus completed when the bracket 162 is attached to the support column section 160 in a properly installed manner (see Figure 10). Fig. 10 to Fig. 12) Furthermore, the outer circumference of the support column section 160 is covered by the bracket 162 once the bracket 162 has been installed. The bracket 162 can also be aligned in the forward / backward direction as well as the left / right direction with respect to the support column section 160.

[0092] However, if the counter-recess 176 of the bracket 162 does not correspond to the alignment projection 165, the bracket 162 engages with the alignment projection 165 of the support column 160, thus preventing the bracket 162 from being attached. This prevents the bracket 162 from being incorrectly attached to the support column section 160. In the event of incorrect attachment, the bracket 162 can be reattached to the support column section 160. This orients the counter-recess 176 of the bracket 162 towards the inside of the support column section 160 (on the side of the spring guide 47) (see Fig. 9) As a result, the bracket 162 is prevented from being extended and deformed due to an external force exerted from outside in the left / right direction in the event of a vehicle collision, etc., thus preventing the breakage of the support column section 160.

[0093] Furthermore, when the bracket 162 is attached along the support column section 160, the engagement claw section 172 of the engagement part 170 is pushed back towards the side of the recessed groove 166 by the lateral side of the bracket 162, utilizing the elasticity of the engagement part 170. These components are designed such that the engagement part 170 is elastically restored when the attachment of the bracket 162 is complete. As a result, the engagement claw section 172 of the engagement part 170 projects rearward through the window opening 177 (see Fig. 10).

[0094] Furthermore, when the bracket 162 is attached to the support column section 160, the locking part 178 is pushed back by the lateral side of the support column section 160 using elasticity. The locking part 178 is elastically restored when the attachment of the bracket 162 is complete, so that the locking end 179 of the locking part 178 is locked in the locking groove 164 (see Fig. 11) As a result, the bracket 162 is prevented from detaching from the support column section 160. It should be noted that a snap connection for mounting the bracket 162 to the support column section 160 is formed by the locking groove 164 and the locking part 178, which has the locking end 179. [ATTACHMENT OF THE SPRING GUIDE 47 AND THE SIDE COLUMN-SHAPED FROM SECTION 48 TO THE CENTRAL TUBE-SHAPED FROM SECTION 42 AND THE SIDE TUBE-SHAPED SECTIONS 43]

[0095] The spring guide 47, which is attached with the coil spring 52, is inserted into the central tubular section 42 (see Fig. 8) The spring guide 47 rests against or comes close to an inner circumferential surface of the coil spring 52. Furthermore, the spring guide ribs 42a rest against or come close to the outer circumferential surface of the coil spring 52. The coil spring 52 can be held vertically by the spring guide 47 and the spring guide ribs 42a.

[0096] As in Fig. As shown in Figure 13, the lateral column-shaped section 48 is inserted into the lateral tubular section 43 from below. At this moment, the engagement claw section 172 of the engagement part 170 engages with the lower edge section 156 of the engagement hole 155 of the lateral tubular section 43 and then moves over the lower edge section 156 by utilizing the elastic deformation (flexible deformation) of the engagement part 170. As a result, the engagement claw section 172 engages with the engagement hole 155 of the lateral tubular section 43, allowing it to move within a predetermined range in the upward / downward direction. More precisely, the lateral column-shaped section 48 is connected to the lateral tubular section 43 in such a way that it is movable and suspended in the upward / downward direction.Furthermore, the lateral column-shaped section 48 can be held coaxially on the lateral tubular section 43 if the respective sliding guide ribs 154 in the lateral tubular section 43 abut or come close to the lateral sides of each of the projecting corners of the support 162 of the lateral column-shaped section 48.

[0097] The sliding guide ribs 154 can guide the support column section 160 in the axial direction, i.e., upward / downward movement. Two sliding guide ribs 154 are arranged in positions opposite the respective flat surfaces of the bracket 162. The sliding guide ribs 154 opposite the flat surface are arranged in positions opposite the two end sections of the flat surface.

[0098] The engagement claw section 172 of the engagement part 170 of the support column section 160 rests against the lower edge 156 of the engagement hole 155 of the lateral tubular section 43 when the connecting component 24 is suspended by the flange unit 22. This prevents the connecting component 24 from detaching from the flange unit 22 in the suspended state. It should be noted that a suspension snap connection 181, designed to movably and suspendably connect the support column section 160 to the lateral tubular section 43 in the upward / downward direction, is formed by the engagement hole 155 and the engagement part 170, which has the engagement claw 172. Furthermore, the engagement claw 172 of the engagement part 170 is designed such that the tip end of it does not protrude from the rear surface of the lateral tubular section 43. [CONNECTION STRUCTURE BETWEEN THE CENTRAL TUBE-SHAPED SECTION 42 AND THE BOTH SIDE TUBE-SHAPED SECTIONS 43 OF THE FLANGE UNIT 22]

[0099] As in Fig. As shown in Figure 8, it can be considered that opposite ends of the rear side walls 43a of both lateral tubular sections 43 of the flange main body 28 can be connected to each other via the rear side wall 42b of the central tubular section 42. It can also be considered that opposite ends of the front side walls 43c of both lateral tubular sections 43 can be connected to each other via a front side wall 42c of the central tubular section 42. In particular, the rear side wall 42b of the central tubular section 42 is installed between the opposite ends of the rear side walls 43a of both lateral tubular sections 43. Furthermore, the front side wall 42c of the central tubular section 42 is installed between the opposite ends of the front side wall 43c of both lateral tubular sections 43.It should be noted that the rear side wall 42b and the front side wall 42c of the central tubular section 42 correspond to the ‘connecting section’ and the ‘bridge section’ in this description.

[0100] Furthermore, it can be considered that the central tubular section 42 and each adjacent lateral tubular section 43 of the flange main body 28 are connected to each other via a common wall section 45, which divides opposite wall sections thereof. It should be noted that the common wall section 45 corresponds to the “connecting section” in this description.

[0101] The rear side wall 42b of the central tubular section 42 is positioned recessed from the rear side walls 43a of both lateral tubular sections 43. Furthermore, the outer wall sections of the rear side walls 43a of both lateral tubular sections 43 (opposite to the central tubular section 42) are inclined obliquely forward. The outer ends of the rear side walls 43a of the lateral tubular sections 43 and the outer ends of the front walls 43c are connected to each other.

[0102] The front side wall 42c of the central tubular section 42 is formed in a circular arc shape that projects in the radial outward direction, i.e., in the front direction. The front side wall 42c is formed in a circular arc shape around the axis 42L of the central tubular section 42. It should be noted that the front side wall 42c corresponds to the "circular arc wall section" in the present description.

[0103] The front side walls 43c of the lateral tubular sections 43 are formed in a circular arc shape that projects in the radial outward direction, i.e., in the forward direction. The front side walls 43c are formed in a circular arc shape about the axes 43L of the lateral tubular sections 43. It should be noted that the front side wall sections 43c correspond to the "circular arc wall sections" in the present description. [ADVANTAGE OF THE FIRST VERSION]

[0104] According to the fuel tank cap 150 described above, the strength of both lateral tubular sections 43, which are in a separate positional relationship, can be improved because the opposing parts of both lateral tubular sections 43 of the flange main body 28 of the flange unit 22 are connected to each other via the rear side wall 42b and the front side wall 42c of the central tubular section 42. As a result, it is possible to prevent deformation of the flange main body 28 of the flange unit 22 due to an external force, such as a vehicle collision.

[0105] Furthermore, the strength of the central tubular section 42 and the lateral tubular sections 43, which are in close positional relation, can be improved because the opposing parts of the central tubular section 42 and the lateral tubular sections 43 of the main flange body 28 of the flange unit 22 are connected to each other via the common wall sections 45. As a result, it is possible to prevent deformation of the main flange body 28 of the flange unit 22 due to an external force, such as a vehicle collision.

[0106] Furthermore, the load concentration exerted on the central tubular section 42 can be reduced because the front side wall 42c of the central tubular section 42 is formed in a circular arc shape projecting radially outwards. The load concentration exerted on the central tubular section 42 can be further reduced because the front side wall 42c of the central tubular section 42 is formed in a circular arc shape around the axis 42L of the central tubular section 42.

[0107] The load concentration exerted on the lateral tubular sections 43 can be further reduced because the front side walls 43c of the lateral tubular sections 43 are formed in a circular arc shape projecting in a radial outward direction. As a result, it is possible to reduce the deformation of the flange main body 28 of the flange unit 22 due to an external force, such as a vehicle collision.

[0108] The load concentration exerted on the lateral tubular sections 43 can be further reduced because the front side walls 43c of the lateral tubular sections 43 are formed in a circular arc shape around the axes 43L of the lateral tubular sections 43.

[0109] Furthermore, the spring guide ribs 42a, which extend in the axial direction, are formed on the inner surface of the central tubular section 42. Therefore, the strength of the central tubular section 42 can be improved by the spring guide ribs 42a. In addition, the sliding resistance of the helical spring 52 relative to the central tubular section 42, into which the helical spring 52 is inserted, can be reduced.

[0110] The sliding guide ribs 154, which extend in the axial direction, are formed on the inner surfaces of the lateral tubular sections 43. This makes it possible to improve the strength of the lateral tubular sections 43 by means of the sliding guide ribs 154. Furthermore, the sliding resistance of the bracket 162 with respect to the lateral tubular section 43, into which the support column section 160 is inserted, can be reduced.

[0111] Furthermore, according to the telescopic connection structure 152 described above, the sliding resistance of the support column sections 160 with respect to the lateral tubular sections 43 can be reduced, since the sliding guide ribs 154 allow the support column sections 160 to slide slidably, thus reducing the contact areas between the lateral tubular sections 43 and the support column sections 160, as the support column sections 160 extend or contract relative to the lateral tubular sections 43. The sliding slidability of the support column sections 160 relative to the lateral tubular sections 43 can therefore be improved, enabling the support column sections 160 to slide smoothly. Furthermore, the strength of the lateral tubular sections 43 can be improved by the sliding guide ribs 154.

[0112] Furthermore, since the sliding guide ribs 154 contact the respective flat surfaces of the support column sections 160 in a sliding manner, the support column sections 160 can be guided in a sliding manner more consistently than if the sliding guide ribs 154 did not contact flat surfaces in a sliding manner. [SECOND VERSION]

[0113] A second embodiment is described below with reference to the drawings. In this embodiment, a fuel supply device having a telescopic connecting structure is described by way of example. The fuel supply device is designed to be mounted on a vehicle, such as an automobile or the like, and serves to supply liquid fuel in the fuel tank to an internal combustion engine (engine). Fig. Figure 14 is a perspective view of the fuel supply device. Fig. Figure 15 is a side view of the same. Fig. Figure 16 is a rear view of the same. Fig. 17 is a cross-sectional view of the same along line XVII-XVII in Fig. 16. Fig. Figure 18 is a perspective exploded view showing a flange assembly and a pump assembly. The directions associated with the fuel supply device are determined by the arrows in the figures. The up / down direction corresponds to a gravity direction, which is a so-called vertical direction when mounted on the vehicle's fuel tank. Furthermore, the forward / reverse direction is not specified. [FUEL TANK]

[0114] As in Fig. As shown in Figure 15, a fuel tank 210 can be formed in a hollow container having an upper wall 211 and a lower wall 212. The fuel tank 210 is made of resin and deforms, i.e., expands or contracts mainly in the upward / downward direction, in response to a change in the tank's internal pressure. An opening 213, configured as a circular hole, can be formed in the upper wall 211. For example, gasoline can be stored as a liquid fuel in the fuel tank 210. The opening 213 corresponds to the "opening" in this description. [FUEL SUPPLY DEVICE]

[0115] As in Fig. As shown in Figure 14, a fuel supply device 220 can have a flange unit 222 and a pump unit 224 (see Figure 14). Fig. 18). [FLANGE UNIT 222]

[0116] The flange unit 222 can be primarily formed from a cover plate 226, which has a circular plate shape. The flange unit 222 can be made of resin, for example, a polyacetal resin (POM). As shown in Fig. As shown in Figure 15, a short cylindrical tubular mounting section 227 can be formed concentrically on a lower surface of the cover plate 226. An annular disc-like flange section 228, extending radially outwards beyond the tubular mounting section 227, can be formed on an outer circumference of the cover plate 226.

[0117] As in Fig. As shown in Figure 14, a fuel outlet opening 230 and an electrical connector 232 can be provided on the cover plate 226. The fuel outlet opening 230 extends through the cover plate 226 in the upward / downward direction.

[0118] As in Fig. As shown in Figure 16, a spacer section 234 can be formed on a rear side of the lower surface of the cover plate 226. The spacer section 234 can have an outer tubular section 235 and two left and right curved wall sections 236 (see Figure 16). Fig. 18) The outer tubular section 235 extends downwards from the cover plate 226 and is formed in a tubular shape extending in the upward / downward direction. Both curved wall sections 236 are formed symmetrically on each side of the outer tubular section 235. Both curved wall sections 236 can be formed to have a substantially triangular shape, tapering downwards from the tubular mounting section 227 when viewed from the rear. The rear side wall 235b of the outer tubular section 235 and the upper ends of both curved wall sections 236 can be connected to the tubular mounting section 227 of the flange assembly 222. [PUMP UNIT 224]

[0119] Fig. Figure 19 is a cross-sectional view depicting a pump unit. As in Fig. As shown in Figure 19, the pump unit 224 can include a lower tank 238, a fuel pump 240, and a pressure regulator 242. Furthermore, the pump unit 224 can include a transmitter level 224 (see Figure 19). Fig. 18).

[0120] The lower tank 238 can comprise a lower tank main body 246, a lower cover 248, and a fuel filter 250. The lower tank main body 246 can comprise a tank forming section 254, a pump housing section 255, a piping section 256, and a regulator mounting pipe section 257. The lower tank main body 246 is made of resin, for example, a polyacetal resin (POM).

[0121] The tank-forming section 254 is designed in a cylindrical shape with a closed top and an open bottom. As in Fig. As shown in Figure 17, a support column attachment section 259 is formed on an upper part of the rear end of the tank-forming section 254. A connecting support column 252 is attached to the support column attachment section 259 (see Figure 17). Fig. 18).

[0122] As in Fig. As shown in Figure 19, the pump housing section 255 can be integrally formed in the center of the upper side of the tank-forming section 254. The pump housing section 255 can be cylindrical with a closed top and an open bottom. An intermediate region of the pump housing section 255 in the upward / downward direction can be connected to the upper side of the tank-forming section 254.

[0123] The pipe section 256 can be formed integrally with the pump housing section 255. The pipe section 256 can be configured as a straight pipe extending substantially to the left from the upper side of the pump housing section 255. The pipe section 256 can have an inlet 256a, which is connected to the pump housing section 255, at one end and an outlet 256b at the other end. The outlet 256b can be connected to the fuel outlet opening 230 via a pipe component 262 (see Fig. 14).

[0124] The regulator mounting pipe section 257 can be formed integrally with the tank-forming section 254. The regulator mounting pipe section 257 is formed in a pipe shape extending in the upward / downward direction. An intermediate portion of the regulator mounting pipe section 257 in the upward / downward direction is connected to the upper side of the tank-forming section 254. An upper part of the regulator mounting pipe section 257 is formed in a conical pipe shape, having a cross-sectional area that gradually decreases upward from the upper side of the tank-forming section 254. An upper end of the regulator mounting pipe section 257 is connected to the axial center of the pipe section 256.

[0125] The lower cover 248 can be in a flat, round disc shape, which has a lower plate section 266 formed in a grid plate shape. The lower cover 248 can be attached to the lower tank main body 246 by a snap-fit ​​connection so that it covers the lower opening therein. The lower cover 248 can be made of resin.

[0126] The fuel filter 250 can comprise a filter component 268 and a connecting component 272. The filter component 268 can be configured as a hollow bag containing a filter material made of a resin fiber. The contour of the filter component 268 can be configured as having a substantially circular disc shape. An inner frame component can be arranged within the filter component 268 to ensure an internal volume for the filter component 268. The connecting component 272 can be arranged on the upper side of the filter component 268. The connecting component 272 is connected to the inner frame component such that the inside and outside of the filter component 268 are in contact with each other. The connecting component 272 and the inner frame component can be made of resin.

[0127] The filter component 268 can be positioned essentially horizontally to seal a lower side of the tank-forming section 254 before the lower cover 248 is attached to the tank-forming section 254. The connecting component 272 can be attached to the lower tank main body 246 by a snap-fit ​​connection. A fuel storage space 274 for storing fuel can be defined between the lower tank main body 246 and the upper side of the fuel filter 250. A circumferential rim of the filter component 268 can be nested between the lower tank main body 246 and the lower cover 248 in a sealed manner by attaching the lower cover 248 to the lower tank main body 246.

[0128] The fuel pump 240 can be an electric fuel pump with a substantially cylindrical shape. The fuel pump 240 can be inserted into the pump housing section 255 from below before the connecting component 272 is attached to the pump housing section 255. Accordingly, a fuel discharge port 240a of the fuel pump 240 is connected to the inlet 256a of the pipe section 256. The fuel pump 240 is held in the pump housing section 255 by snap-fit ​​connection of the connecting component 272 to the pump housing section 255. Accordingly, an interior of the filter component 268 is connected to the fuel intake port of the fuel pump 240 via the connecting component 272. The filter component 268 serves to filter fuel that is drawn into the fuel pump 240.The fuel pump 240 can be used to draw in and pressurize fuel that has passed through the filter component 268, and to discharge the pressurized fuel from the fuel discharge opening 240a into the pipeline section 256.

[0129] The pressure regulator 242 can be mounted within a lower end of the regulator mounting pipe section 257. A detachment prevention component 243, made of resin and designed to prevent the pressure regulator 242 from detaching, can be snapped into place at the lower end of the regulator mounting pipe section 257. The pressure regulator 242 serves to regulate the pressure in the pipeline section 256, i.e., the pressure of fuel supplied to an engine by the fuel pump 240, at a predetermined pressure and to inject excess fuel from an excess fuel discharge port 242a. The pressurized fuel injected through the excess fuel discharge port 242a is discharged into the fuel storage chamber 274 through an opening 243a formed in the detachment prevention component 243.

[0130] As in Fig. As shown in Figure 18, the transmitter level 244 can have a level gauge body 276, an arm 278, and a float 280. The level gauge body 276 can be attached to an outer lateral surface of the tank-forming section 254 of the subtank main body 246. A rotating section 277 can be attached to the level gauge body 276 so that it can rotate about a horizontal axis. One end of the arm 278 can be attached to the rotating section 277. The float 280 can be attached to the other end of the arm 278. The transmitter level 244 is a liquid level gauge configured to detect a remaining quantity of fuel in the fuel tank 210, i.e., a position of the liquid level. The level gauge body 276 and the float 280 can be made of resin. The arm 278 can be made of metal.

[0131] As in Fig. As shown in Figure 17, the connecting strut 252 can have a tubular column section 287 having a hollow cylindrical shape. A base 283 can be formed at a lower end of the tubular column section 287. The base 283 can be mounted on the strut attachment section 259 of the lower tank main body 246. This provides the connecting strut 252 with the lower tank main body 246 in a vertical manner. The connecting strut 252 can be made of resin, for example, polyamide resin mixed with glass fibers (PA66+GF33).

[0132] The tubular column section 287 can be slidably fitted into the outer tubular section 235 of the flange unit 222. The tubular column section 287 can be connected to the outer tubular section 235 by a snap-fit ​​connection for suspension, allowing it to move relatively in an axial direction within a predetermined range. In other words, the pump unit 224 is connected to the flange unit 222 so that it can move in the up / down direction within the predetermined range. The telescopic connection structure 253 is formed by the tubular column section 287 and the outer tubular section 235. The telescopic connection structure 253 will be described later.

[0133] A cylindrical metal coil spring 285 is arranged in the outer tubular section 235 and the tubular column section 287. The coil spring 285 pre-tensions the tubular column section 287 and the outer tubular section 235 in opposite directions, i.e., extension direction. The tubular column section 287 also serves as a spring guide for the coil spring 285.

[0134] An electrical plug 240c (see Fig. 18) The fuel pump 240 is electrically connected to the electrical connector 232 of the flange unit 222 via electrical wires 275 (see Fig. 17). As in Fig. As shown in Figure 14, the electrical plug for the level main body 276 is electrically connected to the electrical plug 232 via electrical wires 282. [FUEL SUPPLY DEVICE-220-INSTALLATION]

[0135] To install the fuel supply device 220 in the fuel tank 210, the pump unit 224 is extended, suspended by the flange unit 222. The pump unit 224 is then inserted into the fuel tank 210 through the opening 213 and placed on the lower wall 212 of the fuel tank 210. At this point, the lower end face of the lower tank body 246 rests against the upper side of the lower wall 212 (see Figure 2). Fig. 17).

[0136] The flange unit 222 is then pressed downwards against the preload force of the coil spring 285, so that the flange section 228 is fastened to the upper wall 211 of the fuel tank 210 by means of fasteners such as metal fixings or bolts. At this time, the tubular mounting section 227 is attached to the opening 213. This closes the opening 213 of the fuel tank 210 and completes the installation of the fuel supply device 220 (see Fig. 15, Fig. 16 to Fig. 17).

[0137] In the installed state of the fuel supply device 220 (see Fig. 17) The lower tank main body 246 of the pump unit 224 is held in a state pressed against the lower wall 212 of the fuel tank 210 by the preload force of the coil spring 285. Furthermore, a fuel supply pipe leading to an engine is connected to the fuel outlet opening 230 of the flange unit 222. Additionally, an external connector leading to the power source, ECU, or the like is connected to the electrical connector 232. [OPERATION OF FUEL SUPPLY DEVICE 220]

[0138] The fuel pump 240 is driven by an external drive. The fuel in the fuel tank 210 and / or the fuel in the fuel storage compartment 274 of the lower tank 238 is then drawn through the fuel filter 250 into the fuel pump 240 and pressurized. The pressure of the pressurized fuel, which is supplied by the fuel pump 240 to the pipe section 256 of the lower tank main body 246, is regulated by the pressure regulator 242. The pressure-regulated pressurized fuel is supplied to the engine through the fuel outlet opening 230 of the flange assembly 222 via the pipe section 262.

[0139] The fuel tank 210 can deform, i.e., expand or contract, in response to a change in the tank's internal pressure caused by a change in temperature or fuel quantity, etc. Consequently, the distance between the upper wall 211 and the lower wall 212 of the fuel tank 210 varies (increases or decreases). At this moment, the flange unit 222 and the pump unit 224 move relative to each other in the upward / downward direction, thus following the change in the height of the fuel tank 210.

[0140] If the fuel tank 210 attempts to contract excessively, the spacer section 234 of the flange unit 222 comes into contact with the base 238 of the connecting strut 252 of the pump unit 224, thus acting as a tension rod. Consequently, the distance between the flange unit 222 and the lower tank main body 246 can be limited to this minimum distance. [TELESCOPIC CONNECTION STRUCTURE 253]

[0141] As in Fig. As shown in Figure 17, the telescopic connecting structure 253 is formed by the outer tubular section 235 on the side of the flange unit 222 and the tubular column section 287 of the connecting strut 252 on the side of the pump unit 224. Fig. Figure 20 is a lateral cross-sectional view showing the telescopic connecting structure. Fig. Figure 21 is a sectional plan view of the same. It should be noted that the flange unit 222 corresponds to the "cover component" in this description. Similarly, the connecting strut 252 corresponds to the "connecting component" in this description. Similarly, the pump unit 224 corresponds to the "internal tank component" in this description. Similarly, the outer tubular section 235 corresponds to the "tubular section" in this description. Similarly, the tubular column section 287 corresponds to the "column section" and the "inner tubular section" in this description. [OUTER TUBE-SHAPED SECTION 235]

[0142] Fig. Figure 23 is a view from below, showing the tubular section of a flanged unit. Fig. Figure 24 is a lateral cross-sectional view of the same. As in Fig. As shown in Figure 23, the outer tubular section 235 can be formed in a tubular shape which, viewed from the bottom, has essentially a D-shaped cross-section. The outer tubular section 235 has a front side wall 235a, a rear side wall 235b, a left side wall 235c, and a right side wall 235d. The front side wall 235a is formed in a circular arc shape that projects in the radial outward direction, i.e., in the front direction. A recessed curved surface 235e in an embodiment of a recessed circular arc shape in a cross-section orthogonal to the axial direction can be formed on an inner surface (rear surface) of the front side wall 235a. The left side wall 235c and the right side wall 235d are parallel to each other.Each of the side walls 235a to 235d of the outer tubular section 235 can be designed such that it has a substantially constant thickness in a circumferential direction.

[0143] A plurality of (eight in Fig. 23) Sliding guide ribs 237 project from the inner surface of the outer tubular section 235. Two sliding guide ribs 237 are arranged on each of the side walls 235a to 235d of the tubular section 235 at predetermined intervals in a circumferential direction. The sliding guide ribs 237 can be arranged symmetrically in the left / right direction. The sliding guide ribs 237 can be formed in straight lines extending in the axial direction of the outer tubular section 235, i.e., in the upward / downward direction (see Fig. 24). The sliding guide ribs 237 can be designed such that they are able to bear against or be close to the respective outer flat surfaces 288a to 288d of the tubular column section 287 (see Fig. 21). It should be noted that the sliding guide ribs 237 correspond to the ‘sliding guide ribs’ and the ‘rib-like sections’ in the present description.

[0144] As in Fig. As shown in Figure 24, an engagement hole 290 in an elongated hole shape extending in the upward / downward direction is formed in the rear side wall 235b of the outer tubular section 235. A U-shaped elastic engagement element 291 is formed at a lower end of the engagement hole 290 (see Figure 24). Fig. 16). The elastic engagement part 291 is designed to be elastically deformable in the forward / backward direction.

[0145] A spring guide 293 is formed by integral forming within a base end, i.e., an upper end, of the outer tubular section 235. The spring guide 293 is formed such that it has a rod shape extending vertically downwards from the center of the upper surface of the outer tubular section 235. A cross-section of the spring guide 293 orthogonal to the axial direction may, for example, have a Y-shape (see Fig. 23). [TUBE-SHAPED COLUMN SECTION 287]

[0146] Fig. Figure 25 is a top view showing a connecting strut. As in Fig. As shown in Figure 25, the tubular column section 287 of the connecting strut 252 is formed in a substantially square tubular shape. The tubular column section 287 has a front side wall 287a, a rear side wall 287b, a left side wall 287c, and a right side wall 287d. The outer surfaces of the side walls 287a to 287d of the tubular column section 287 have four flat surfaces which, in a cross-section orthogonal to the axial direction, define a rectangular shape; in other words, they have a front flat surface 288a of the front side wall 287a, a rear flat surface 288b of the rear wall 287b, a left flat surface 288c of the left side wall 287c, and the right flat surface 288d of the right side wall 287d.

[0147] The four flat surfaces 288a to 288d form straight lines in a cross-section orthogonal to the axial direction. Circular arc walls 287e, having a 1 / 4-circular arc cross-section, are formed symmetrically at the front left and right projecting corners on the outer surface of the tubular column section 287, i.e., the projecting corner between the front side wall 287a and the left side wall 287c and the projecting corner between the front side wall 287a and the right side wall 287d. Projecting curved surfaces 288e in a configuration of a projecting circular arc shape in a cross-section orthogonal to the axial direction may be formed on the outer surface of the circular arc wall 287e.

[0148] An engagement projection 295, which projects in the rearward direction, can be formed in the center of the upper end of the rear side wall 287b of the tubular column section 287 (see Fig. 20). Furthermore, each of the side walls 287a to 287d of the tubular column section 287 is essentially designed to have a substantially constant thickness in the circumferential direction. Slightly projecting guide projections 289, having a predetermined width, are formed in the center of the inner surfaces of each of the side walls 287a to 287d in the lateral direction. The guide projections 289 can be omitted. [ATTACHMENT OF THE TUBE-SHAPED COLUMN SECTION 287 TO THE OUTER TUBE-SHAPED SECTION 235]

[0149] As in Fig. As shown in Figure 20, the helical spring 285 is inserted into the tubular column section 287. The outer circumferential surface of the helical spring 285 rests against or comes close to the guide projections 289 of the tubular column section 287. The tubular column section 287 is then inserted into the outer tubular section 235 from below. At this point, the engagement projection 295 of the tubular column section 287 engages with the elastic engagement part 291 of the outer tubular section 235 and then moves over the elastic engagement part 291, utilizing the elastic deformation (flexible deformation) of the elastic engagement part 291. As a result, the engagement projection 295 engages in the engagement hole 290 of the outer tubular section 235, allowing it to move within the predetermined range in the upward / downward direction.Furthermore, the upper end of the coil spring 285 is fitted into the spring guide 293 within the outer tubular section 235. The outer tubular section 235 and the tubular column section 287 are pre-tensioned in opposite directions, i.e., extension direction.

[0150] When the connecting strut 252 is suspended by the outer tubular section 235 in this state, the engagement projection 295 of the tubular column section 287 is locked onto the elastic engagement part 291 of the outer tubular section 235. This prevents the connecting strut 252 from detaching from the outer tubular section 235. The elastic engagement part 291 and the engagement projection 295 form a snap-fit ​​connection for suspension, designed to connect the tubular column section 287 to the outer tubular section 235 in such a way that it is movable and suspended in the upward / downward direction. [SLIDING GUIDE RIBS 237 AND TUBE-SHAPED COLUMN SECTION 287]

[0151] As in Fig. As shown in Figure 21, the respective sliding guide ribs 237 in the outer tubular section 235 serve to guide the tubular column section 287 in a sliding manner in the axial direction, i.e., the upward / downward direction, and bear against or come close to the respective flat surfaces 288a to 288d, which correspond to the outer surface of the tubular column section 287. This allows the tubular column section 287 to be held coaxially with the outer tubular section 235. Two sliding guide ribs 237 can be arranged in positions opposite the respective flat surfaces 288a to 288d of the tubular column section 287. The two sliding guide ribs 237 of the rear flat surface 288b are arranged in positions opposite the two ends of the flat surface 288b in the lateral direction (left / right direction).

[0152] The recessed curved surface 235e of the outer tubular section 235 and both projecting curved surfaces 288e of the tubular column section 287 are arranged opposite each other. The distance S between the recessed curved surface 235e and the corresponding recessed surface 288e is less than the minimum projecting height H of the sliding guide ribs 237 adjacent to the curved surfaces 235e, 288e.

[0153] If the tubular column section 287 is oriented in relation to the outer tubular section 235 in the direction around the axis (for example, in the clockwise direction) Fig. 21) is displaced, the flat surfaces 288a to 288d respectively lie against one of the two sliding guide ribs 237, which are opposite the corresponding flat surfaces 288a to 288d (see Fig. 22). Furthermore, if the tubular column section 287 is positioned in the opposite direction (the counterclockwise direction) to the outer tubular section 235 Fig. 21) is shifted, the flat surfaces 288a to 288d respectively on the other of the two sliding guide ribs 237, which are opposite the corresponding of the flat surfaces 288a to 288d.

[0154] The average thickness of the outer tubular section 235 is specified to be greater than the average thickness of the tubular column section 287. [ADVANTAGE OF THE SECOND VERSION]

[0155] According to the telescopic connection structure 253 described above, when the tubular column section 287 extends or contracts relative to the outer tubular section 235, the sliding guide ribs 237 allow the tubular column section 287 to slide, thus reducing the contact areas between the two. This reduces the sliding resistance of the tubular column section 287 relative to the outer tubular sections 235. The sliding mobility of the tubular column section 287 relative to the outer tubular section 235 is thus improved, enabling the tubular column section 287 to slide smoothly. Furthermore, the sliding guide ribs 237 improve the strength of the outer tubular section 235.

[0156] Furthermore, since the sliding guide ribs 237 contact the respective flat surfaces 288a to 288d of the tubular column sections 287 in a slidingly displaceable manner, the tubular column section 287 can be guided in a slidingly displaceable manner more consistently than if the sliding guide ribs 237 did not contact flat surfaces in a slidingly displaceable manner.

[0157] The number of sliding guide ribs 237 opposite the respective flat surfaces 288a to 288d can be two. Therefore, it is possible to prevent displacement of the tubular column section 287 relative to the outer tubular section 235 in the circumferential direction around the axis and to prevent a reduction in the sliding displacement of the tubular column section 287 due to displacement. More than three sliding guide ribs can be arranged on at least one of the respective flat surfaces 288a to 288d, or one can be omitted from at least one of the respective flat surfaces 288a to 288d.

[0158] Furthermore, two sliding guide ribs 237, which face the rear flat surfaces 288b, are arranged in positions opposite the two ends of the rear flat surface 288b in the lateral direction (left / right direction). Accordingly, the distance between the two sliding guide ribs 237 can be increased compared to a case in which the two sliding guide ribs 237, which face the rear flat surface 288b, are arranged in positions other than opposite the two ends of the rear flat surface 288b. This can reduce the displacement (rotation) of the tubular column section 287 in the circumferential direction about the axis with respect to the outer tubular section 235.With regard to the flat surfaces 288a, 288c, 288d of the tubular column section 287, the two sliding guide ribs 237 may preferably be arranged in positions opposite the two ends of each flat surface 288a, 288c, 288d.

[0159] Furthermore, if the tubular column section 287 displaces around the axis relative to the outer tubular section 235, the flat surfaces 288a to 288d can abut one of the two sliding guide ribs 237 opposite the corresponding flat surfaces 288a to 288d. Therefore, it is possible to consistently prevent displacement of the tubular column section 287 around the axis relative to the outer tubular section 235. It is also possible to prevent the protruding corners of the tubular column section 287 from seizing between the adjacent sliding guide ribs 237 due to the displacement of the tubular column section 287 around the axis relative to the outer tubular section 235. This prevents a reduction in the sliding displacement of the tubular column section 287.

[0160] Furthermore, the projecting curved surfaces 288e are formed on the front left and right projecting corners of the outer surface of the tubular column section 287. Additionally, the recessed curved surface 235e, which faces the projecting curved surfaces 288e, is formed on the inner surface of the outer tubular section 235. It is thus possible to reduce a load concentration exerted in a radial and an axial direction on the outer tubular section 235 and the tubular column section 287 due to a horizontal external force in the event of a vehicle collision or an external force in a direction that pushes the fuel tank 210 upwards.

[0161] It is also possible to reduce the contour of the outer tubular section 235 relative to the tubular column section 287 or to increase the contour of the tubular column section 287 relative to the outer tubular section 235 by narrowing the opposing distance S between each projecting curved surface 288e and the recessed curved surface 235e.

[0162] Furthermore, the average thickness of the outer tubular section 235 can be greater than the average thickness of the tubular column section 287. Therefore, the strength of the outer tubular section 235 can be designed to be greater than the strength of the tubular column section 287, thus preventing the outer tubular section 235 from breaking in the event of a vehicle collision.

[0163] Furthermore, in the present embodiment (see Fig. 20) The strut attachment section 259 of the lower tank main body 246 is designed to be more fragile than the connecting strut 252. Furthermore, if a force point of a load to be absorbed in the event of a vehicle collision is defined as P1, a pivot point is defined as P2, and an action point is defined as P3, the distance K between the force point P1 and the action point P3 is shorter. This causes the strut attachment section 259 to break in front of the flange assembly 222 in the event of a vehicle collision, thus preventing the flange assembly 222 from breaking. [THIRD VERSION]

[0164] The present embodiment corresponds to the second embodiment with some modifications to the telescopic connecting structure 253. Therefore, the modified parts thereof are described, but the same parts as in the second embodiment are to be designated by the same reference numerals and are not described. Fig. Figure 26 is a sectional top view showing the telescopic connection structure. As in Fig. As shown in Figure 26, projecting sections 297, each having an outwardly projecting rib shape, extend symmetrically in the left / right direction from the left and right ends of the rear side wall 287b of the tubular column section 287. The projecting sections 297 can be formed in straight lines extending in the axial direction of the tubular column section 287. This increases the width of the rear flat surface 288b in the left / right direction.

[0165] Two sliding guide ribs 237, opposite the rear flat surface 288b of the outer tubular section 235, are arranged in positions opposite the two projecting sections 297 of the tubular column section 287. The distance between the two sliding guide ribs 237 opposite the rear flat surface 288b is greater than that of the second embodiment (see Fig. 21). [ADVANTAGE OF THE THIRD VERSION]

[0166] According to the present embodiment, when the tubular column section 287 is displaced circumferentially about the axis with respect to the outer tubular section 235, one of the two sliding guide ribs 237, which are opposite each of the flat surfaces 288a to 288d of the tubular column section 237, rests against it, similar to the second embodiment. At this time, as in Fig. As shown in Figure 27, when the tubular column section 287 is displaced clockwise with respect to the outer tubular section 235, one (the left) of the aforementioned sections 297 abuts the sliding guide rib 237 corresponding to the aforementioned section 297. Furthermore, when the tubular column section 287 is displaced counterclockwise with respect to the outer tubular section 235, the other (right) of the aforementioned sections 297 abuts the sliding guide rib 237 corresponding to the aforementioned section 297. This can reduce the displacement (rotation) of the tubular column section 287 in the circumferential direction about the axis with respect to the outer tubular section 235 compared to the second embodiment (see Figure 27). Fig. 21). [ALTERNATIVE EXECUTION FORMS]

[0167] The embodiments of the technology disclosed in this description have been described above, but they can be implemented in various other configurations. For example, the technology disclosed in this description is not limited to the fuel supply device 20 for a vehicle, such as an automobile or the like, but can also be adopted for other fuel supply devices. Furthermore, the connecting component 24 can be fixedly attached to a component on the side of the pump unit 26. Additionally, the telescopic connecting structure 152 is not limited to two left and right sets, but can also be a set of one, three, or more. Furthermore, the shape of the support column section 160 is not limited to a rectangular column shape, but can also be a cylindrical column shape.Furthermore, the support 162 can be omitted. Furthermore, the number of bridge sections installed between the opposing parts of the tubular sections 43 can be changed to one, three, or more. Furthermore, the number of lateral tubular sections 43 can be changed to one, three, or more. Furthermore, the lateral tubular sections 43 can be arranged in close positional proximity such that the opposing parts of the lateral tubular sections 43 can be connected to each other via a common wall section. Furthermore, the central tubular section 42 and / or the lateral tubular sections 43 may not be connected to the other tubular sections. Furthermore, the connecting strut 252 can be formed integrally with the lower tank main body 246.Furthermore, the tubular shape of the tubular column section 287 and / or the outer tubular section 235 can be modified to a cylindrical shape, a rectangular tubular shape, or the like. Additionally, the tubular column section 287 can be modified to be solid. Furthermore, the shape of the outer surface of the outer tubular section 235 can be suitably modified.

Claims

[1] Cover for a fuel tank (10), with: a cover component (22) designed to close an opening (13) of the fuel tank (10); and a connecting component (24) designed to be connected to the cover component (22) in such a way that it is movable in an upward / downward direction, wherein: a plurality of tubular sections (42, 43) extending in the upward / downward direction are formed side by side on the cover component (22); at least one column-shaped section (160) extending in the upward / downward direction is formed on the connecting component (24); the at least one column-shaped section (160) is inserted into at least one of the majority of the tubular sections (42, 43) in such a way that it is movable in the upward / downward direction; the majority of the tubular sections (42, 43) comprise two tubular sections (42, 43) such that opposite parts of the two tubular sections (42, 43) are connected to each other via a connecting section (42b, 42c, 45); and in which an axial length of the connecting section (42b, 42c, 45) is equal to an axial length of each of the plurality of the tubular sections (42, 43) that are connected to each other via the connecting section (42b, 42c, 45). [2] Cover for the fuel tank (10) according to claim 1, wherein: the two tubular sections (43) are spaced apart from each other; and the connecting section (42b, 42c) is a bridge section that is installed between the opposing parts of the two tubular sections (43). [3] Lid for the fuel tank (10) according to claim 1, wherein: the two tubular sections (42, 43) are arranged adjacent to each other; and the connecting section (45) is a common wall section that divides the opposite parts of the two tubular sections (42, 43). [4] Lid for the fuel tank (10) according to one of claims 1 to 3, wherein a circular arc wall section (42c, 43c) in a circular shape extending radially outwards is formed on at least one part of the at least one tubular section of the plurality of tubular sections (42, 43). [5] Lid for the fuel tank (10) according to claim 4, wherein the circular arc wall section (42c, 43c) is designed to have a circular arc shape about an axis (42L, 43L) of the tubular section (42, 43). [6] Cover for the fuel tank (10) according to one of claims 1 to 5, wherein rib-like sections (154) extending in an axial direction are formed on an inner surface of the at least one tubular section (43) of the plurality of tubular sections (42, 43). [7] Telescopic connecting structure (253) for connecting a lid component (222) designed to close an opening (213) of a fuel tank (210) with an inner tank component (224) arranged on a base (212) of the fuel tank (210) such that it moves in the upward / downward direction, wherein: a tubular section (235) extending in the upward / downward direction is formed on a rear section of the cover component (222); a column-shaped section (287) extending in the upward / downward direction is formed on the tank's internal component (224); the column-shaped section (287) is inserted into the tubular section (235) in such a way that it is movable in the upward / downward direction; at least one sliding guide rib (237) extending in an axial direction and designed to guide the column-shaped section (287) in a sliding manner, is formed on an inner surface of the tubular section (235); an outer surface of the columnar section (287) has front, rear, right and left flat surfaces (288a, 288b, 288c, 288d) which form a rectangular shape in a cross-section orthogonal to the axial direction; Each of the rear right and rear left projecting corners on the outer surface of the columnar section (287) is formed in a cross-section orthogonal to the axial direction in an L-shape which has a right angle; Each of the front right and front left projecting corners (287e) on the outer surface of the column-shaped section (287) has a projecting curved surface (288e) in a configuration of a projecting circular arc shape in a cross-section orthogonal to the axial direction; an inner surface of the tubular section (235) has front, rear, right and left side walls (235a, 235b, 235c, 235d) which form a D-shape in a cross-section orthogonal to the axial direction; Each of the rear right and rear left recessed corner sections on the inner surface of the tubular section (235) is formed in a cross-section orthogonal to the axial direction in an L-shape having a right angle; and the front side wall (235a) of the inner surface of the tubular section (235) has a recessed curved surface (235e) which is opposite the projecting curved surfaces (288e) and forms a projecting circular arc shape in a cross-section orthogonal to the axial direction. [8] Telescopic connection structure (235) according to claim 7, wherein: the at least one sliding guide rib (237) is positioned such that it is opposite at least one of the front, rear, right and left flat surfaces (288a, 288b, 288c, 288d). [9] Telescopic connecting structure (253) according to claim 8, wherein the at least one sliding guide rib (237) has a plurality of guide ribs (237) which are opposite one of the front, rear, right and left flat surfaces (288a, 288b, 288c, 288d). [10] Telescopic connecting structure (253) according to claim 9, wherein two sliding guide ribs (237) of the plurality of sliding guide ribs (237) are arranged in positions opposite each end of the corresponding flat surface (288a, 288b, 288c, 288d). [11] Telescopic connection structure (253) according to claim 9 or 10, wherein: the number of sliding guide ribs (237) opposite each of the front, rear, right and left flat surfaces (288a, 288b, 288c, 288d) is two; and When the columnar section (287) is displaced about the axial direction with respect to the tubular section (235), each of the front, rear, right and left flat surfaces (288a, 288b, 288c, 288d) contacts one of the two sliding guide ribs (237) opposite the corresponding flat surface (288a, 288b, 288c, 288d). [12] Telescopic connection structure (253) according to one of claims 7 to 11, wherein: the columnar section (287) is designed to have a substantially rectangular tubular shape; and an average thickness of the tubular section (235) is greater than an average thickness of the columnar section (287).

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