FUEL TANK CAP

Abstract

Lid (150) for a fuel tank, 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 spacer section (41) having a tubular section (43) extending in the upward / downward direction, on which a cover component (22) is formed; the connecting component (24) has a connecting main body (46) and a column-shaped section (160) extending from an upper end face (46a) of the connecting main body (46) in the upward / downward direction; the column-shaped section (160) is inserted into the tubular section (43) in such a way that it is movable in the upward / downward direction; the column-shaped section (160) is connected to the tubular section (43) by a snap connection (181) in such a way that it is movable and can be suspended in the upward / downward direction; a lower end face (41a) of the spacer section (41) and the upper end face (46a) of the connecting main body (46) are opposite each other; when the lower end face (41a) of the spacer section (41) and the upper end face (46a) of the connecting main body (46) are in contact with each other, a relative movement of the cover component (22) and the connecting component (24) towards each other is prevented; the tubular section (43) which has an engagement hole (155) and an engagement part (170) which is formed on the column-shaped section (160) constitute the snap connection (181); the intervention hole (155) has an elongated shape extending in the upward / downward direction; the engagement part (170) has an engagement claw section (172) at one of its tip ends and is designed such that it is elastically deformable in a locking release direction of the engagement claw section (172); and the engagement claw section (172) is engaged in the engagement hole (155) in such a way that it is able to move in the upward / downward direction and rest on a lower edge section (156) of the engagement hole (155).

Description

Technical field

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

[0002] A fuel supply device for supplying fuel from 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 2017-194 005 A. The technology described in JP 2017-194 005 A incorporates a fuel tank cover comprising a cover component designed to close an opening in the fuel tank and a connecting component that is attached 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. DE 38 87 263 T2 discloses a further fuel supply device. Summary of the invention: Technical problem to be solved by the invention

[0003] JP 2017 - 194 005 A does not disclose an embodiment for connecting the column-shaped section of the connecting component to the tubular section of the cover component in such a way that it is movable and suspended in the upward / downward direction. Therefore, it is assumed that more work is required to attach the connecting component to the cover component, and that the attachability of the connecting component is poor.

[0004] The technical problem to be solved by the technique disclosed herein is to provide a cover for a fuel tank which is capable of improving the attachability of a connecting component which is connected to a cover component in such a way that it is movable and suspended in an upward / downward direction. Means to solve the problem

[0005] The problems described above can be solved by a fuel tank lid, which is disclosed herein.

[0006] In particular, a fuel tank disclosed herein has the features according to claim 1 or claim 2. Effects of the invention

[0007] According to the lid for the fuel tank, it is possible to improve the attachability of the connecting component, which is connected to the lid component in such a way that it can be moved and suspended in the upward / downward direction. Simple description of drawings Fig. Figure 1 is a perspective view showing a fuel supply device according to a 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 side cross-sectional view of a snap connection. Fig. Figure 15 is a side cross-sectional view of a snap connection according to a second embodiment. Fig. Figure 16 is a rear view of a snap connection according to a third embodiment. Fig. Figure 17 is a cross-sectional side view of the snap connection. Fig. Figure 18 is a rear view of a snap connection according to a fourth embodiment. Fig. Figure 19 is a side cross-sectional view of the snap connection. Embodiments for carrying out the invention

[0008] The following describes embodiments of the techniques disclosed herein with reference to drawings. [FIRST VERSION]

[0009] A fuel tank lid according to the present embodiment can be used for a fuel supply device. The fuel supply device can be installed in the fuel tank, which is 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]

[0010] 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 HEATING DEVICE]

[0011] 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]

[0012] The flange unit 22 can include a flange main body 28 and a fuel vapor valve 30. [FLANGE MAIN BODY 28]

[0013] 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.

[0014] 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.

[0015] As in Fig. As shown in Figure 3, a spacer section 41 can be formed on a rear section 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 entirety of the central tubular section 42 and both lateral tubular sections 43 can be symmetrical. The central tubular section 42 and both lateral tubular sections 43 divide adjacent wall sections. Two left and right curved wall sections 44 can be formed symmetrically 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 essentially in a triangular shape, tapering downwards from the tubular mounting section 33 when viewed from the rear. [FUEL VAPOR VALVE 30]

[0016] 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]

[0017] As in Fig. As shown in Figure 3, the connecting component 24 can have a connecting main body 46, a spring guide 47, and left and right lateral column-shaped sections 48. The connecting main body 46 can be made of resin and can be formed in a flat block shape in the forward / backward direction. The connecting main body 46 can have a horizontal upper end face 46a and a horizontal lower end face 46b. An engagement shaft hole 50, extending through the forward / backward direction, can be formed in a lower section of the connecting main body 46. The spring guide 47 can be configured as a strut on the center of the upper end face 46a of the connecting main 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 connecting main body 46. [Connecting component 24 - Attachment to flange unit 22]

[0018] A spring 52, formed from a metal coil spring, 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 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 connected by a snap-fit ​​connection such that they are relatively movable in the axial direction within a predetermined range. Additionally, the flange main body 28 and the connecting main body 46 can be pre-tensioned by the spring 52 in a direction that separates them. [PUMP UNIT 26]

[0019] 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]

[0020] 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]

[0021] 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.

[0022] 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]

[0023] 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 configured as an elongated rectangular shape that is flat in the upward / downward direction, so that its longitudinal direction corresponds to the left / right direction.

[0024] 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.

[0025] 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.

[0026] The cover component 68 can be configured as an elongated rectangular plate shape and a grid plate shape 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. An anti-rotation section 82, having a horizontal plate shape, is formed on a lower end portion of a rear side surface of the cover component 68. [TRANSMITTER LEVEL 56]

[0027] 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]

[0028] 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]

[0029] 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.

[0030] 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 lower tank body 66. The pump housing 60 can be elastically supported on the main lower tank body 66 in a horizontal, i.e., laterally positioned, state by both elastic support elements 102.

[0031] 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.

[0032] One end of a fuel delivery tube 107, formed from a flexible resin tube, can be press-fitted to the pipe connection 98. A nozzle assembly 109 can be press-fitted to the other end of the fuel delivery tube 107. The nozzle assembly 109 can be snap-fitted to a left rear section of the fuel-receiving tubular section 71. The fuel delivery tube 107 can be bent into an inverted U-shape. [PRESSURE REGULATOR 62]

[0033] 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 regulate 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]

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 and Fig. 5). 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).

[0038] As in Fig. As shown in Figure 5, 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]

[0039] 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.

[0040] 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]

[0041] 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.

[0042] 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) At this moment, the anti-rotation section 82 of the cover component 68 rests against the lower wall 12 in such a way that the lower end face 46b of the connecting main body 46 comes into contact with the anti-rotation section 82 ( Fig. 3) This prevents further rotation of the pump unit 26.

[0043] 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 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.

[0044] Due to the preload force of the 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).

[0045] 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.

[0046] Furthermore, a fuel supply pipe leading to an engine is connected to the fuel outlet opening 37 of the flange assembly 22. External connectors are also connected to either the first electrical connector section 38 or the second electrical connector section 39. A fuel vapor pipe component leading to a canister is connected to the vaporization opening 36. The canister contains adsorbents (e.g., activated carbon) capable of adsorbing and desorbing fuel vapor generated within the fuel tank 10. [OPERATION OF THE FUEL SUPPLY DEVICE 20]

[0047] The fuel pump 58 (see Fig. 5) is driven by an external drive power. 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 (see Fig. 1) supplied.

[0048] The excess fuel caused by 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 (see Fig. 4 and Fig. 5) Furthermore, a portion of the pressurized fuel delivered by the fuel pump 58 into the delivery 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 delivery pipe 107. Additionally, 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 (see Fig. 1) opens. [FUEL TANK CAP CONNECTION MECHANISM]

[0049] 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, a fuel tank cap 150 can comprise the flange unit 22, the connecting component 24, and the spring 52. Furthermore, connecting mechanisms 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 connecting mechanisms 152 are symmetrical, the left connecting mechanism 152 is mainly described, while the right connecting mechanism 152 is briefly described or not described at all.

[0050] 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 lateral tubular sections 43 correspond to the "tubular sections" in this description. [SIDE TUBE-SHAPED SECTIONS 43 OF THE FLANGE UNIT 22]

[0051] 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 are formed on 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.

[0052] 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.

[0053] Fig. Figure 14 shows the side cross-sectional view, which depicts a snap connection. As in Fig. As shown in Figure 14, an upper surface 156a of the lower edge section 156 of the engagement hole 155 can be inclined downwards from an inner end face to an outer end face therein. An angle of inclination θ2, formed by the upper surface 156a of the lower edge section 156 to a plane F2 orthogonal to the longitudinal direction of the engagement hole 155 (the upward / downward direction), is, for example, set to 30°. [SIDE COLUMN-SHAPED SECTION 48 OF CONNECTING PART 24]

[0054] Fig. Figure 9 is the perspective view showing the exploded connecting component. Fig. Figure 10 is the partial cross-sectional side view of the lateral columnar section. Fig. Figure 11 is the rear view of the same. Fig. 12 is the cross-sectional view along line XII-XII in Fig. 11. As in Fig. As shown in Figure 9, the lateral column-shaped section 48 can have a support column section 160, which forms its main body, and a bracket 162, which covers the outer circumference of the support column section 160. [SUPPORT COLUMN SECTION 160]

[0055] The support column section 160 can be formed in a substantially square column-shaped form on the main connecting body 46 of the connecting component 24. Two substantially U-shaped locking grooves 164 can be formed symmetrically in the right / left direction on the lower section on both the left and right sides of the support column section 160 (see Fig. 11) Furthermore, a rectangular alignment projection 165, located below the locking groove 164, can be formed on a lower end portion of an inner side surface under both the left and right surfaces of the support column section 160 (a right side surface of the left support column section 160 or a left side surface of the right support column section 160). A recessed groove 166, which may have a rectangular groove shape with its front and upper sides open, can be formed on the upper end of the support column section 160. An engagement portion 170 can 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-shaped section” in the present description.

[0056] 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.

[0057] 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).

[0058] As in Fig. As shown in Figure 14, the engagement claw section 172 can be inclined downwards from its base end towards its tip end. An angle of inclination θ1, formed by a lower surface 172a of the engagement claw section 172 to a plane F1 orthogonal to a rear surface 160a of the support column section 160, is set to, for example, 25°. The angles of inclination θ1 and θ2, which are related to the upper surface 156a of the lower edge section 156 of the engagement hole 155, are set such that they satisfy the relationship where θ1 is less than θ2. The lower surface 172a of the engagement claw section 172 is opposite the upper surface 156a of the lower edge section 156 of the engagement hole 155. [HOLDER 162]

[0059] 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 brackets 162 can be designed to be attached to the support column sections 160. A counter-recess 176, extending axially in the center of the side plate at a predetermined width, can be formed between the two circumferential end edges of the bracket 162 (see Figure 9). Fig. 12). The counter recess 176 corresponds to the alignment projection 165 of the support column section 160.

[0060] 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 bracket 162 (a left side plate of the bracket 162 corresponding to the left support column section 160, or a right side plate of the bracket 162 corresponding to the right support column section 160) and is formed in an obliquely cut and raised manner in the bracket 162 (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 (see Fig. 9). [ATTACHMENT OF THE BRACKET 162 TO THE SUPPORT COLUMN SECTION 160]

[0061] 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, if the counter-recess 176 of the bracket 162 corresponds to the alignment projection 165 of the support column section 160, the alignment projection 165 can move into the counter-recess 176, so that the bracket 162 is attached to the support column section 160 without engaging the alignment projection 165. Furthermore, the bracket 162, which is attached to the support column section 160, can be aligned in the forward / backward direction as well as the left / right direction by the support column section 160.

[0062] 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.

[0063] 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 bracket mounting snap connection for mounting the bracket 162 to the support column section 160 is formed by the support column section 160, which has the locking groove 164, and the locking part 178, which has the locking end 179.

[0064] Furthermore, when the bracket 162 is attached to 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). [ATTACHMENT OF THE SIDE COLUMN-SHAPED SECTIONS 48 TO THE SIDE TUBE-SHAPED SECTIONS 43]

[0065] Fig. Figure 13 is a partial cross-sectional view showing a suspension state in which the lateral columnar section is suspended from the lateral tubular section. 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 in such a way that it is movable 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.

[0066] 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 162 to the lateral tubular section 43 in the upward / downward direction, is formed by the lateral tubular section 43, which has 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. [ADVANTAGES OF THE FIRST VERSION]

[0067] According to the fuel tank cap 150, the support column sections 160 of the connecting component 24 are connected to the lateral tubular sections 43 of the flange unit 22 by the snap connections 181 in such a way that they are movable and suspended in the upward / downward direction, thus improving the installation work of the connecting component 24.

[0068] While the support column section 160 is moved upwards / downwards relative to the lateral tubular section 43, the engagement claw section 172 of the engagement part 170 can move upwards / downwards in the engagement hole 155. Furthermore, the engagement claw section 172 of the engagement part 170 is brought into contact with the lower edge section 156 of the engagement hole 155, so that the support column section 160 can be suspended from the lateral tubular section 43 in a state in which the support column section 160 is prevented from detaching.

[0069] The upper surface 156a of the lower edge section 156 of the engagement hole 155 slopes downwards from the inner end to the outer end, and the lower surface 172a of the engagement claw section 172 of the engagement part 170 slopes downwards from the base end towards the tip end. Thus, when the engagement claw section 172 of the engagement part 170 rests on the lower edge section 156 of the engagement hole 155, a load acts in a direction in which the lower edge section 156 and the engagement claw section 172 move close to each other. Therefore, the elastic deformation of the engagement part 170 in the locking release direction can be suppressed. Accordingly, even if the flange unit 22 is lifted sharply, the release of the support column section 160 from the lateral tubular section 43 can be prevented. Consequently, detachment of the connecting component 24 from the flange unit 22 can be prevented.

[0070] The inclination angle θ1 of the lower surface 172a of the engagement claw section 172 and the inclination angle θ2 of the upper surface 156a of the lower edge section 156 of the engagement hole 155 are set such that they satisfy the relationship where θ1 is less than θ2. This allows the elastic deformation of the engagement part 170 in the locking release direction to be effectively and stably suppressed when the engagement claw section 172 of the engagement part 170 is brought into contact with the lower edge section 156 of the engagement hole 155, compared to a case where the inclination angles θ1 and θ2 are set such that they satisfy the relationship where θ1 is equal to or greater than θ2.

[0071] More precisely, for example, in a case where θ1 is greater than θ2, the tip portion of the engagement claw section 172 rests in a point contact state on the outer end portion of the hole bottom edge section 156. Thus, the distance from the base end portion of the engagement claw section 172 to the contact point of the hole bottom edge section 156 is long, so that the engagement part 170 is slightly elastically deformed in the locking release direction. In a case where θ1 equals θ2, the distance from the base end portion of the engagement claw section 172 to the contact point of the hole bottom edge section 156 varies when the support column section 160 tilts in the forward / backward direction due to vehicle vibration, fuel sloshing in the tank, etc. Thus, it is likely that the engagement part 170 will be elastically deformed in the locking release direction.On the other hand, if θ1 is smaller than θ2, the base end part of the engagement claw section 172 is brought into contact with the inner end part of the hole bottom edge section 156 in a point contact manner. Accordingly, when the engagement claw section 172 of the engagement part 170 rests on the hole bottom edge section 156, the load acts in a direction in which the hole bottom edge section 156 and engagement claw section 172 are engaged with each other, so that the elastic deformation of the engagement part 170 in the locking release direction is effectively and stably suppressed.

[0072] The engagement claw section 172 of the engagement part 170 is designed such that its tip portion does not protrude from the rear surface of the lateral tubular section 43. Therefore, when the lateral tubular section 43 is inserted into the fuel tank 10 through the opening part 13, the tip portion of the engagement claw section 172 is prevented from catching on an opening edge portion of the opening part 13.

[0073] Two pairs of coupling mechanisms 152, each connecting the flange unit 22 and the connecting component 24, are provided on the right and left sides. Therefore, even if the flange unit 22 is lifted significantly, the load exerted on the lower edge section 156 of the engagement hole 155 and the engagement part 170 of the snap connection 181 can be distributed across both right and left coupling mechanisms 152. [SECOND VERSION]

[0074] The present embodiment corresponds to the first embodiment (see Fig. 14) with some modifications applied to the snap connection 181, so that the modified parts are described and unnecessary explanations are omitted. Fig. Figure 15 is a side cross-sectional view showing a snap connection. As in Fig. As shown in Figure 15, an engagement projection 184, which is formed in a claw shape, can project from an upper end part of a front surface side of the lower edge section 156 of the engagement hole 155 of the lateral tubular section 43.

[0075] According to the present embodiment, the engagement span K of the lower edge section 156 of the engagement hole 155 with respect to the engagement claw section 172 of the engagement part 170 of the support column section 160 can be increased by the engagement projection 184. This makes it possible to increase the engagement force between the engagement claw section 172 and the lower edge section 156 of the engagement hole 155 in a state in which the support column section 160 is suspended by the lateral tubular section 43. [THIRD VERSION]

[0076] The present embodiment corresponds to the first embodiment (see Fig. 14) with some modifications applied to the snap connection 181, so that the modified parts are described and unnecessary explanations are omitted. Fig. Figure 16 is a rear view showing a snap connection. Fig. Figure 17 is a side cross-sectional view of the same. As in Fig. As shown in Figure 17, a hook-shaped engagement claw section 186 can be located on the rear surface 160a of the rear side wall 167 of the support column section 160 instead of the engagement part 170 of the first embodiment (see Figure 17). Fig. 14) protrude. The engagement claw section 186 may be designed in the same form or substantially the same form as the engagement claw section 172 of the first embodiment.

[0077] As in Fig. As shown in Figure 16, right and left grooves 188 can be formed on a lower end portion of the rear side wall 43a of the lateral tubular section 43, on both sides of the engagement hole 155, such that they are close to the engagement hole 155 and at predetermined intervals. Both grooves 188 can extend upwards from the lower end face of the rear side wall 43a so that they are linear and parallel to each other. A portion, including the lower end portion of the engagement hole 155, between the grooves 188 in the rear side wall 43a is referred to as an engagement portion 190. The engagement portion 190 can be formed in a cantilevered shape extending downwards from the upper end face and has the lower edge section of the hole 156 at a lower end portion thereof. The engagement part 190 can be designed such that it is in a locking release direction of the lower edge section of the hole 156, i.e.elastically deformable in one direction away from the supporting column section 160 (towards the rear), i.e. flexibly deformable, is (see a two-point catenary 190 in . Fig. 17).

[0078] In the assembly process of the lateral columnar section 48 relative to the lateral tubular section 43, when the lateral columnar section 48 is inserted into the lateral tubular section 43, the lower edge of the hole 156 of the engagement part 190 engages with the engagement claw section 186 and then moves over the engagement claw section 186 utilizing the elastic deformation (flexible deformation) of the engagement part 190. Thus, the engagement claw section 186 is brought into engagement with the engagement hole 155 of the lateral tubular section 43 in such a way that it is movable within a predetermined range in the upward / downward direction. That is, the lateral columnar 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.

[0079] When the lateral column-shaped section 48 is suspended from the lateral tubular section 43, the engagement claw section 186 of the support column section 160 is brought into contact with the lower edge section 156 of the engagement hole 155 of the lateral tubular section 43. The engagement part 190, which is provided on the lateral tubular section 43 and has at least the lower end portion of the engagement hole 155, and the engagement claw section 186, which is provided on the support column section 160, form a suspension snap connection 192 for connecting the support column section 160 to the lateral tubular section 43 so that it is movable and suspended in the upward / downward direction. In the present embodiment, the bracket 162 of the first embodiment (see Fig. 9) omitted.

[0080] According to the present embodiment, when the support column section 160 is moved in the upward / downward direction relative to the lateral tubular section 43, the engagement claw section 186 of the support column section 160 can move in the engagement hole 155 in the upward / downward direction. Furthermore, the engagement claw section 186 rests against the lower edge section 156 of the engagement hole 155, so that the support column section 160 can be suspended from the lateral tubular section 43 in a state in which the support column section 160 is prevented from detaching. In the present embodiment, the engagement projection 184 can rest on the lower edge section 156 of the engagement hole 155 of the lateral tubular section 43 similarly to the second embodiment (see Fig. 15) be trained. [FOURTH VERSION]

[0081] The present embodiment corresponds to the third embodiment (see Fig. 16 and Fig. 17) with some modifications applied to the engagement part 190 of the snap connection 192, so that the modified parts are described and unnecessary explanations are omitted. Fig. Figure 18 is a rear view showing a snap connection. Fig. Figure 19 is a side cross-sectional view of the same. As in Fig. 18 and Fig. As shown in Figure 19, an engagement part 194 can be placed at the lower end of the rear side wall 43a of the lateral tubular section 43 instead of the engagement part 190 (see Figure 19). Fig. 16 and Fig. 17) of the third embodiment. Furthermore, the engagement hole 155 and the lower edge section of the hole 156 of the third embodiment are omitted.

[0082] As in Fig. As shown in Figure 19, the engagement part 194 can have an engagement part body 195, which is formed in a cantilevered shape extending downwards from its upper end face, and a receiving part 196, which projects in a hook-like shape from the front face of a tip part (lower end face) of the engagement part body 195. The receiving part 196 can be inclined upwards from the base end face towards the tip end face.

[0083] As in Fig. As shown in Figure 18, the engagement part body 195 can be formed by cutting an essentially U-shaped opening groove 198 in the rear side wall 43a of the lateral tubular section 43. The engagement part body 195 can be designed such that it is elastically deformable, i.e., flexibly deformable, in a locking release direction of the receiving part 196, i.e., in a direction away from the support column section 160 (towards the rear) (see a two-point catenary curve 195 in Figure 18). Fig. 19) The receiving part 196 can be inclined upwards from its base end towards its tip side. An upper surface of the receiving part 196 can face a lower surface of the engagement claw section 186. A hole section 202, having a square shape, can be formed in an upper circumferential part of the receiving part 196 of the engagement part body 195.

[0084] In an assembly process of the lateral columnar section 48 relative to the lateral tubular section 43, when the lateral columnar section 48 is inserted into the lateral tubular section 43, the receiving part 196 of the engagement part 194 engages with the engagement claw section 186 and then moves over the engagement claw section 186 by utilizing the elastic deformation (flexible deformation) of the engagement part body 195. As a result, the engagement claw section 186 is positioned in the lateral tubular section 43 such that it is movable in a predetermined range in the upward / downward direction.

[0085] When the lateral column-shaped section 48 is suspended from the lateral tubular section 43, the engagement claw section 186 of the support column section 160 is brought into contact with the receiving part 196 of the engagement part 194 of the lateral tubular section 43. The engagement part 194, which is provided on the lateral tubular section 43, and the engagement claw section 172, which is provided on the support column section 160, form a suspension snap connection 200 for connecting the support column section 160 to the lateral tubular section 43 so that it is movable and suspended in the upward / downward direction.

[0086] According to the present embodiment, when the support column section 160 is moved in the upward / downward direction relative to the lateral tubular section 43, the engagement claw section 172 of the support column section 160 can move within the lateral tubular section 43 in the upward / downward direction. Furthermore, the engagement claw section 172 rests against the receiving part 196 of the engagement part 194, so that the support column section 160 can be suspended from the lateral tubular section 43 in a state in which the support column section 160 is prevented from detaching. [OTHER VERSION]

[0087] The techniques disclosed herein are not limited to the embodiments described above and can be modified in various ways. For example, the technique disclosed herein is not limited to the fuel supply device 20 of a vehicle, such as an automobile, and can be applied to other fuel supply devices. The connecting component 24 can be attached to a component on the side of the pump unit 26. Furthermore, the connecting mechanism 152, which couples the flange unit 22 to the connecting component 24, is not limited to two sets from the right and left, but can be one set or three or more sets. The shape of the support column section 160 is not limited to a square column shape, but can be a round column shape. The bracket 162 can be omitted.

[0088] The disclosure of the techniques has been made in various aspects. A first aspect of the technique is a fuel tank lid comprising a lid component designed to close an opening in the fuel tank and a connecting component designed to be connected to the lid component in such a way that it is movable in an up / down direction. A tubular section extending in the up / down direction is formed on the lid component. A columnar section extending in the up / down direction is formed on the connecting component. The columnar section is inserted into the tubular section in such a way that it is movable in the up / down direction. The columnar section is connected to the tubular section by a snap-fit ​​connection in such a way that it is movable in the up / down direction and can be suspended.

[0089] According to the first aspect, the column-shaped section of the connecting component is connected to the tubular section of the cover component by the snap connection in such a way that it is movable and suspended in the upward / downward direction, thus improving the attachability of the connecting component.

[0090] A second aspect is the fuel tank cover of the first aspect, where the tubular section and an engagement element form the snap connection. The tubular section has an engagement hole. The engagement element is formed on the column-shaped section. The engagement hole has an elongated shape extending in the upward / downward direction. The engagement element has an engagement claw section at one end and is designed to be elastically deformable in a locking release direction of the engagement claw section. The engagement claw section engages in the engagement hole in such a way that it is able to move in the upward / downward direction and bear against a lower edge section of the engagement hole.

[0091] According to the second aspect, if the columnar section is moved upwards / downwards relative to the tubular section, the engagement claw section of the engagement part can move upwards / downwards within the engagement hole. Furthermore, if the engagement claw section of the engagement part is brought into contact with the lower edge section of the engagement hole, the columnar section can be suspended from the tubular section in such a way that the columnar section is prevented from detaching.

[0092] A third aspect is the fuel tank cover of the first aspect, in which an engagement hole, having an elongated shape extending in the upward / downward direction, is formed on the tubular section. An engagement part and an engagement claw section constitute the snap connection. The engagement part is located on the tubular section and has at least a lower end portion of the engagement hole. The engagement claw section is located on the column-shaped section. The engagement claw section engages in the engagement hole in such a way that it is able to move in the upward / downward direction and bear against a lower edge portion of the engagement hole. The engagement part is designed to be elastically deformable in a locking release direction of the lower edge portion of the engagement hole.

[0093] According to the third aspect, if the columnar section is moved upwards / downwards relative to the tubular section, the engagement claw section of the columnar section can move upwards / downwards within the engagement hole. Furthermore, if the engagement claw section is brought into contact with the lower rim section of the engagement hole, the columnar section can be suspended from the tubular section in such a way that the columnar section is prevented from detaching.

[0094] A fourth aspect is the cover for the fuel tank, one of the second and third aspects, in which an engagement projection is formed on the lower edge section of the engagement hole, so that an engagement span is increased in relation to the engagement claw section.

[0095] According to the fourth aspect, the engagement span of the lower rim section of the engagement hole, relative to the engagement claw section, can be increased by the engagement projection. This allows the engagement force between the engagement claw section and the lower rim section of the engagement hole to be increased when the columnar section is suspended from the tubular section.

[0096] A fifth aspect is the fuel tank cover, one of the second to fourth aspects, in which an upper surface of the lower rim section of the engagement hole is inclined downwards from an inner end face to an outer end face. A lower surface of the engagement claw section is opposite the upper surface of the lower rim section of the engagement hole and is inclined downwards from a base end face to a tip end face thereof.

[0097] According to the fifth aspect, when the engagement claw section rests on the lower edge section of the engagement hole, a load acts in the direction where the lower edge section and the engagement claw section are close to each other. Therefore, the elastic deformation of the engagement part in the locking release direction can be suppressed. Accordingly, even if the cover component is lifted significantly, the column-shaped section cannot be separated from the tubular section. As a result, detachment of the connecting component from the cover component can be prevented.

[0098] A sixth aspect is the fuel tank cover of the first aspect, in which a snap-fit ​​connection is formed by an engagement part provided on the tubular section and an engagement claw section provided on the columnar section. The engagement part has a receiving part capable of interlocking with the engagement claw section. The engagement claw section is arranged in the tubular section such that it is capable of moving in the upward / downward direction and bearing against the receiving part. The engagement part is designed to be elastically deformable in a locking release direction of the receiving part.

[0099] According to the sixth aspect, if the columnar section is moved in the upward / downward direction relative to the tubular section, the engagement claw section of the columnar section can move within the tubular section in the upward / downward direction. Furthermore, if the engagement claw section is brought into contact with the receiving part of the engagement part, the columnar section can be suspended from the tubular section in such a way that the columnar section is prevented from detaching.

Claims

[1] Lid (150) for a fuel tank, 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 spacer section (41) having a tubular section (43) extending in the upward / downward direction, on which a cover component (22) is formed; the connecting component (24) has a connecting main body (46) and a column-shaped section (160) extending from an upper end face (46a) of the connecting main body (46) in the upward / downward direction; the column-shaped section (160) is inserted into the tubular section (43) in such a way that it is movable in the upward / downward direction; the column-shaped section (160) is connected to the tubular section (43) by a snap connection (181) in such a way that it is movable and can be suspended in the upward / downward direction; a lower end face (41a) of the spacer section (41) and the upper end face (46a) of the connecting main body (46) are opposite each other; when the lower end face (41a) of the spacer section (41) and the upper end face (46a) of the connecting main body (46) are in contact with each other, a relative movement of the cover component (22) and the connecting component (24) towards each other is prevented; the tubular section (43) which has an engagement hole (155) and an engagement part (170) which is formed on the column-shaped section (160) constitute the snap connection (181); the intervention hole (155) has an elongated shape extending in the upward / downward direction; the engagement part (170) has an engagement claw section (172) at one of its tip ends and is designed such that it is elastically deformable in a locking release direction of the engagement claw section (172); and the engagement claw section (172) is engaged in the engagement hole (155) in such a way that it is able to move in the upward / downward direction and rest on a lower edge section (156) of the engagement hole (155). [2] Lid (150) for a fuel tank, 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 spacer section (41) having a tubular section (43) extending in the upward / downward direction, on which a cover component (22) is formed; the connecting component (24) has a connecting main body (46) and a column-shaped section (160) extending from an upper end face (46a) of the connecting main body (46) in the upward / downward direction; the column-shaped section (160) is inserted into the tubular section (43) in such a way that it is movable in the upward / downward direction; the column-shaped section (160) is connected to the tubular section (43) by a snap connection (192) in such a way that it is movable in the upward / downward direction and can be suspended; a lower end face (41a) of the spacer section (41) and the upper end face (46a) of the connecting main body (46) are opposite each other; when the lower end face (41a) of the spacer section (41) and the upper end face (46a) of the connecting main body (46) are in contact with each other, a relative movement of the cover component (22) and the connecting component (24) towards each other is prevented; an access hole (155) having an elongated shape extending in the upward / downward direction is formed on the tubular section (43); an engagement part (190) provided on the tubular section (43) and having at least a lower end part of the engagement hole (155), and an engagement claw section (186) provided on the column-shaped section (160), forming the snap connection (192); the engagement claw section (186) is engaged in the engagement hole (155) in such a way that it is able to move in the upward / downward direction and rest on a lower edge section (156) of the engagement hole (155); and the engagement part (190) is designed such that it is elastically deformable in a locking release direction of the lower edge section (156) of the engagement hole (155). [3] Lid (150) for the fuel tank according to claim 1 or 2, wherein an engagement projection (184) is formed on the lower edge section (156) of the engagement hole (155) such that an engagement span is increased with respect to the engagement claw section (172; 186). [4] Lid (150) for the fuel tank according to one of claims 1 to 3, wherein: an upper surface (156a) of the lower edge section (156) of the engagement hole (155) is inclined downwards from an inner end face to an outer end face; and a lower surface of the engagement claw section (172; 186) is opposite the upper surface (156a) of the lower edge section (156) of the engagement hole (155) and is inclined downwards from a base end side to a tip end side thereof.

Images