JP7192746B2 - Lubricator - Google Patents

Description

The present disclosure relates to a refueling device that receives a refueling nozzle for refueling a fuel tank.

At refueling facilities for refueling automobiles, there are facilities for refueling different fuels such as gasoline and light oil. has different outer diameters for each fuel. Recently, Adblue (aqueous solution of urea) is sometimes used as fuel for catalysts in diesel vehicles, and these liquid supply nozzles also have different nozzle diameters. Specifically, in Japan, the nozzle diameter for gasoline is about 21.0 mm, and the nozzle diameter for light oil is 23.5 mm. The diameter of the nozzle itself varies depending on the country, but it is often the case that the diameter of the nozzle is varied for each type of liquid expected to be supplied to automobiles. In some countries, laws and ordinances stipulate that nozzle diameters in refueling facilities are made different for each type of fuel, etc., and a mechanism is provided in a refueling device on the side of a vehicle so that different types of fuels, etc. are not supplied. For example, the techniques disclosed in Patent Literatures 1 and 2 are known as devices for determining whether or not to supply oil based on the difference in nozzle diameter.

U.S. Pat. No. 8,714,214 B2 JP 2015-74409 A

However, such a difference in nozzle diameter differs depending on the country, and in some cases the difference may be as small as about 1 mm. For example, in Japan, the nozzle diameter for AdBlue is 19 mm, and the difference from the nozzle diameter for gasoline is about 2 mm. There is a demand for the development of a device that can discriminate such a slight difference in diameter with high accuracy and suppress erroneous insertion of the nozzle.

The present disclosure can be implemented as the following forms or application examples.

(1) As one embodiment of the present disclosure, there is provided a fueling device that receives a fueling nozzle when fueling. This fueling device includes a fueling port for receiving a fueling nozzle, a fueling port forming portion forming a part of a fuel passage from the fueling port to a fuel tank, and a reaching range of the fueling nozzle inserted from the fueling port. A first portion having an opening corresponding to the outer diameter of a small-diameter nozzle having an outer diameter smaller than that of a fueling nozzle compatible with the fueling device, and a shape corresponding to the outer diameter of the large-diameter nozzle compatible with the fueling device. a discriminating portion that constitutes a series of openings consisting of a second portion that is an opening; an abutment member with a tip abutted thereon; and an abutment member provided closer to the fuel tank than the discriminating portion. and an opening/closing member. Here, the discriminating section may include an operating member that guides the inserted small-diameter nozzle to the first portion when the small-diameter nozzle is inserted into the second portion.
In such a lubricating device, when a small-diameter nozzle having an outer diameter incompatible with the lubricating device is inserted through the opening, the actuating member provided in the discriminating portion that forms a continuous opening composed of the first portion and the second portion. guides the small-diameter nozzle to the first portion, and the abutting member prevents entry of the small-diameter nozzle. Therefore, erroneous insertion of a small-diameter nozzle that is not compatible with the fueling device can be suppressed.
(2) In such a fuel supply device, the actuating member has a larger inner diameter at the second position than the first position on the fuel filler port side and the second position on the fuel tank side from the first position. may surround the opening in a narrowed shape. In this way, the operating member can be wide on the filler port side and narrow on the opposite side, making it easier to guide the fuel filler nozzle to the first and second portions. As such a shape, a so-called funnel shape (funnel shape), a spiral shape, or the like can be considered.
(3) In such a fuel supply device, the discriminating portion has an inner dimension smaller than the outer diameter of the small-diameter nozzle in the second portion, and the actuating member inserts the small-diameter nozzle into the second portion. a moving member that is not moved by the large-diameter nozzle but is moved by the insertion of the large-diameter nozzle, the moving member expanding the inner dimension portion of the second portion beyond the outer diameter of the large-diameter nozzle by the movement Good as a thing. In this way, when the large-diameter nozzle is inserted, the moving member can be moved to guide the large-diameter nozzle to the second portion. entry can be prevented.
(4) In such a fuel supply device, the moving member has a larger inner diameter at the second position than the first position on the fuel filler port side and the second position on the fuel tank side from the first position. The opening forming member may be formed so as to surround the opening in a narrowed shape. Since the moving member can be wider on the filler port side and narrower on the opposite side, it becomes easier to guide the filler nozzle to the first portion. As such a shape, a shape corresponding to a part of a so-called funnel shape, a shape corresponding to a part of a spiral shape, or the like can be considered.
(5) In such a fuel supply device, a guide member formed at a predetermined height on the fuel filler port side is provided at a position where the first portion and the second portion of the discriminating portion are connected, and the guide member abuts against the guide member. The movement of the moving member may be realized by inserting the large-diameter nozzle in contact with the nozzle. This makes it easier to move the moving member.
(6) In such a fueling device, the actuating member includes a starting member with which the tip of the fueling nozzle inserted from the fueling port abuts, and the second portion of the starting member is outside the large-diameter nozzle. When the tip of the small-diameter nozzle abuts against the activating member, the abutment member is moved toward the activating member, and the activating member moves the abutting member toward the activating member. When the large-diameter nozzle abuts, the movement of the activating member may expand the inner dimension portion of the second portion beyond the outer diameter of the large-diameter nozzle. By doing so, it is possible to reliably discriminate between the small-diameter nozzle and the large-diameter nozzle by the activating member.
(7) In such a fuel supply device, a guide member formed at a predetermined height on the fuel filler port side is provided at a position where the first portion and the second portion of the discriminating portion are connected, and is inserted from the fuel filler port. A part of the tip of the large-diameter nozzle that has been moved may be brought into contact with the guide member, thereby realizing the movement of the activating member. This makes it easier to move the activating member.
(8) In such a fuel supply device, the guide member is separated from the small-diameter nozzle when the small-diameter nozzle is in contact with the activating member, and the operating member is located at the first position on the fuel filler port side. At the second position, the opening is surrounded by a shape with a narrower inner diameter, and the small-diameter nozzle abuts the activating member. The abutment member may be moved by a force smaller than the force required for the movement of the actuating member by the small diameter nozzle when the nozzle is inserted. In this way, the activating member can easily discriminate between small diameter nozzles and large diameter nozzles, and reliably prevent entry of small diameter nozzles.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram which shows the structure of the whole lubricating apparatus of embodiment. FIG. 4 is a partially broken perspective view showing the internal structure of the filler neck of the first embodiment; FIG. 4 is a perspective view showing the default configuration of the discriminator; FIG. 4 is a perspective view showing a form of an operating state of the discriminating section; FIG. 4 is a view in the direction of arrow V showing a side surface of the discriminating section; Rear view of the discriminating unit. Explanatory drawing which shows the operation state when a small diameter nozzle is inserted. VIIB-VIIB sectional view of FIG. 7A. FIG. 5 is an explanatory view showing an operation state when the small diameter nozzle is inserted into the first portion and the operating member is moved; VIIIB-VIIIB sectional view of FIG. 8A. Explanatory drawing which shows the state which inserted the small diameter nozzle in the 2nd part. FIG. 5 is an explanatory view showing an operation state when the small diameter nozzle is inserted into the second portion and the moving member is moved by the guide member; XX sectional view of FIG. 9B. Sectional drawing which shows the other form of a guide member. Explanatory drawing which shows the operation state at the time of inserting a small diameter nozzle in the 2nd part side. Explanatory drawing which shows the state which inserted the large diameter nozzle in the 2nd part. Explanatory drawing which shows the state which inserted the large diameter nozzle further. Explanatory drawing which shows the state which inserted the large diameter nozzle further. FIG. 4 is an explanatory view showing the relationship between the first portion and the second portion of the gauge member, corresponding to the small diameter nozzle and the large diameter nozzle; The perspective view which shows the external appearance of the filler neck by which the lubricating apparatus of 2nd Embodiment was incorporated. FIG. 11 is an explanatory diagram showing the default configuration of the discriminating section incorporated in the filler neck of the second embodiment; FIG. 4 is an explanatory view showing an example of the position of the small diameter nozzle when the small diameter nozzle is inserted into the first portion; Explanatory drawing which shows the relationship between the clearance between the small diameter nozzle inserted in the 1st part, and a guide member. Explanatory drawing which shows the state which inserted the small diameter nozzle in the 2nd part. XXI-XXI sectional view in FIG. Sectional drawing which shows the state which inserted the small diameter nozzle further. Sectional drawing which shows the state which inserted the small diameter nozzle further deeply. FIG. 5 is an explanatory diagram showing a state in which the large-diameter nozzle is inserted into the second portion; XXV-XXV sectional view in FIG. Explanatory drawing which shows the relationship between the large diameter nozzle inserted in the 2nd part, and the separation distance between a guide member. Sectional drawing which shows the state which inserted the large diameter nozzle further. Sectional drawing which shows the state which inserted the large diameter nozzle further. FIG. 4 is an explanatory diagram showing a state in which the large-diameter nozzle has reached the opening/closing member;

A. First embodiment:
FIG. 1 is an explanatory diagram showing the outline of the fueling system FS of the first embodiment. The fueling device FS is mounted on the vehicle and guides the fuel supplied from the fueling nozzle FN to the fuel tank FT. FIG. 1 shows an arrow G indicating a vertical direction. The fueling device FS includes a filler neck 100 which is a member forming a filler port, a fuel vapor port 26, a filler pipe FP, a check valve TV, a fuel vapor tube NT, a gas release valve BV, a mounting member FE, It has Filler neck 100 is attached to fuel chamber FR of the vehicle by attachment member FE, and receives insertion of fuel nozzle FN into fuel filler port 22 . Instead of the illustrated mounting member FE, the filler neck 100 may be mounted in the oil supply chamber FR using a disk-shaped substrate having a circular hole formed in the center into which a portion of the filler neck 100 is inserted. .

Filler neck 100 is connected to fuel tank FT by filler pipe FP and fuel vapor tube NT. The filler neck 100 guides liquid fuel such as gasoline from the fuel nozzle FN (see FIG. 1) inserted into the fuel filler port 22 to the fuel tank FT connected via the filler pipe FP. The filler pipe FP is, for example, a resin tube having a bellows structure at two locations, and can expand, contract and bend within a certain range. This filler pipe FP is connected to the fuel tank FT via a check valve TV. The fuel discharged from the fuel nozzle FN inserted into the fuel filler port 22 is led to the fuel tank FT from the check valve TV through the fuel passage formed by the filler neck 100 and the filler pipe FP, which will be described later. The check valve TV prevents backflow of fuel from the fuel tank FT to the filler pipe FP.

The fuel vapor tube NT has one end connected to the fuel tank FT via the gas release valve BV and the other end connected to the fuel vapor port 26 projecting from the filler neck 100 . The gas release valve BV also functions as a joint connecting the fuel vapor tube NT to the fuel tank FT. Air in the tank containing fuel vapor flows from the gas release valve BV into the fuel vapor tube NT. The fuel vapor is guided to the fuel tank FT through the filler pipe FP together with the supplied fuel during refueling from the refueling nozzle FN. The filler neck 100 will be described in detail below.

FIG. 2 is a partially broken perspective view showing the internal structure of the filler neck 100. As shown in FIG. In the drawing, the front side of the fuel passage forming portion 20 is cut away. The fuel passage forming portion 20 is a member that forms the outer shape of the entire filler neck 100 and forms the fuel passage 90 inside. The filler neck 100 incorporates a first opening/closing mechanism 40 and a second opening/closing mechanism 30 from the side of the cover member 24 that forms the fuel filler port 22 . Both the first opening/closing mechanism 40 and the second opening/closing mechanism 30 are within reach of the fuel nozzle FN, and are opened by inserting the fuel nozzle FN that fits the fuel supply device FS.

As illustrated, the second opening/closing mechanism 30 is arranged below the fuel passage forming portion 20 on the side closest to the fuel tank, and opens and closes the fuel passage 90 . The second opening/closing mechanism 30 includes a second opening/closing valve 31 that opens and closes the fuel passage 90 , and a spring (not shown) that is fixed to the fuel passage forming portion 20 and biases the second opening/closing valve 31 . The second on-off valve 31 is a flap that prevents backflow of liquid fuel from the fuel tank side to the insertion side, and includes a sealing member 33 for sealing. The second on-off valve 31 is rotatably supported by a rotary shaft 32 provided in the fuel passage forming portion 20, and is biased by a spring in a direction in which the fuel passage 90 is closed.

The first opening/closing mechanism 40 provided closer to the filler port 22 than the second opening/closing mechanism 30 includes a discriminating portion 50 that discriminates the outer diameter of the inserted fuel nozzle FN, and a discriminating portion 50 that is closer to the fuel tank FT than the discriminating portion 50. and an opening/closing member 70 provided. The discriminating section 50 is entirely made of resin in this embodiment. The configuration of the discriminating section 50 will be described with reference to FIGS. 3 to 6. FIG. The discriminating portion 50 has a circular opening into which a fueling nozzle that fits the fueling device FS can enter, and is provided with a tapered conical guard 51 inside and a moving member 52 movably incorporated below it. The conical guard 51 has an upper edge 59 on its upper perimeter and a fixed flange 56 on half of its lower perimeter. The upper edge portion 59 is fixed to a return portion 23 formed inside the fuel filler port 22 of the cover member 24, as shown in FIG. Therefore, the conical guard 51 does not move even if the tip of the fuel nozzle FN hits it when the fuel nozzle FN is inserted.

The conical guard 51 has a tapered shape that narrows inward in the radial direction, and the portion where the moving member 52 is arranged does not have a tapered portion. That is, the lower half of the conical guard 51 has a shape excluding the portion where the moving member 52 is arranged. The lower end of the conical guard 51 is located on the side opposite to the filler port 22 . The fixed flange portion 56 extends outward by a predetermined length from the tip of the tapered portion and has a flange shape.

As shown in FIG. 5, the base of the support member 44 supporting the spring members 41 and 43 is fixed in the middle of the outer tapered portion of the conical guard 51 . The post member 44 has a substantially T-shape, and extends outward from a portion fixed to the conical guard 51. Resin spring members 41 and 43 are attached to the tips of the arms extending to both sides. installed. Opposite ends of the spring members 41 and 43 are fixed to the end portion 46 of the moving member 52 . Therefore, the moving member 52 can move in the DI direction in the drawing within the range in which the spring members 41 and 43 extend. FIG. 4 shows a state in which the moving member 52 has moved. It should be noted that the spring members 41 and 43 can also be realized by metal coil springs, leaf springs, or the like.

Inside the moving member 52 , there are a tapered portion 58 tapered downward from the upper end, guide members 53 and 54 arranged at both ends of the inclined portion 58 in the circumferential direction, and guide members 53 and 54 protruding inward from the lower end of the inclined portion 58 . Abutting portion 57 is provided. A semicircular moving flange portion 55 projecting outward is provided at the lower end of the inclined portion 58 on the outside of the moving member 52 .

As shown in FIG. 2 , the fixed flange portion 56 and the movable flange portion 55 are in contact with the upper surface of the support member 27 formed inside the fuel passage forming portion 20 at their lower sides. Therefore, the discriminating portion 50 has an upper end fixed to the return portion 23 of the cover member 24 , a lower end in contact with the upper surface of the support member 27 , and a moving member 52 between the return portion 23 and the support member 27 . is held to move on the surface of the As shown in FIG. 4, when the moving member 52 moves in the direction of the arrow DI, the fixed flange portion 56 and the moving flange portion 55 are separated by a distance D1. This distance D1 is greater than the radial width of the abutting portion 57 described above, that is, the length along the moving direction of the moving member 52 .

As shown in FIGS. 3 and 4, the guide members 53 and 54 provided at two positions inside the moving member 52 have a conical column shape tapering upward in the upper half, which is the fuel filler port 22, so as to fill the fuel. The lower half, which is the side opposite the mouth 22, has a conical shape tapering downward. The upper half of the guide member 53 has two slopes 61 and 62 that descend radially inward from the filler port 22 side. The slope 62 is hereinafter referred to as the first guide slope 62 and the slope 61 is hereinafter referred to as the second guide slope 62 . Also, the lower half of the guide member 53 is shaped to recede outward from the ends of the first and second guide slopes 62 and 61, respectively. The slope below the first guide slope 62 is called a first extended bottom surface 67 , and the slope below the second guide slope 61 is called a second extended bottom surface 66 . Although the overall shape of the guide member 54 side is not shown in FIGS. , which are arranged facing each other. Detailed shapes and functions of the guide members 53 and 54 will be sequentially described with reference to FIG. 7A and subsequent figures.

As shown in FIG. 7A , the guide members 53 and 54 have an inner dimension portion formed by the right end (the radially inner end) of the guide member 53 and the left end (the radially inner end) of the guide member 54 so that the separation distance They are spaced apart by GD1. This clearance GD1 is slightly larger than the outer diameter of the small-diameter nozzle FNS, which will be described later, and slightly smaller than the outer diameter of the large-diameter nozzle FNL. In FIG. 7A, the small-diameter refueling nozzle is indicated by a dashed line for reference. As already described, the upper half of the guide member 53 is provided with the first guide slope 62 and the second guide slope 61, which are slopes with different inclination directions. A first guide slope 64 and a second guide slope 63 with different directions are provided. The first guide slopes 62, 64 of the guide members 53, 54 face the center of the guide members 53, 54, and the second guide slopes 61, 63 of the guide members 53, 54 face the moving direction of the moving member 52. and facing the opposite direction.

The abutting portion 57 of the moving member 52 is formed at the lower end of the inclined portion 58 and below the lower ends of the second guide slopes 61 and 63, as shown in FIG. 7B. As shown in FIG. 7A, the portion where the inclined portion 58 and the abutment portion 57 contact each other has an arc shape. The lower end of the conical guard 51 has an arcuate shape with a diameter smaller than that of the upper edge 59 . When the moving member 52 is not moved, that is, when the fixed flange portion 56 and the moving flange portion 55 are in contact with each other, the abutment portion 57, the guide members 53 and 54, and the lower end of the cone-shaped guard form an approximate distance. A circular portion is called a first portion of the discriminating portion 50 . This first portion is designed to accommodate a fuel nozzle having a diameter smaller than that of the fuel nozzle FN that fits this fueling device FS. In the following description, a small-diameter fuel nozzle (a fuel nozzle with a nozzle diameter of 19.0 mm) that is not compatible with this fueling system FS will be referred to as a small-diameter nozzle FNS, and a large-diameter fueling nozzle (gasoline nozzle) that is compatible with this fueling system FS will be referred to as a small-diameter nozzle FNS. A fuel nozzle with a diameter of 20.5 mm) is called a large-diameter nozzle FNL. In this embodiment, the separation distance GD1 is 19.75 mm.

As shown in FIG. 7A, the small diameter nozzle FNS fits in the first portion of the discriminating section 50 when the moving member 52 is in the non-moving position (hereinafter also referred to as the default position). Even if the insertion position of the small-diameter nozzle FNS is slightly deviated from the first portion, the small-diameter nozzle FNS is guided to the first portion by the first guide slopes 62 and 64 of the guide members 53 and 54 . In this state, as shown in FIG. 7B, which is a VIIB-VIIB cross-sectional view in FIG. Further entry into the fuel passage 90 is not possible. An opening/closing member 70 provided adjacent to the discrimination section 50 below the discrimination section 50, that is, on the side of the fuel tank FT, has a valve body 71 that closes the first portion in FIG. 7A. A holding shaft 73 held in the passage forming portion 20 and a spring 75 having one end fixed to the holding shaft 73 and the other end contacting the lower surface of the valve body 71 are provided. Since the valve body 71 is biased in the closing direction by the spring 75, it is kept in the position of closing the fuel passage 90 unless an external force acts. When the small-diameter nozzle FNS is inserted into the fuel supply device FS, and the tip of the small-diameter nozzle FNS is inserted into the first portion without coming into contact with the conical guard 51 or the inclined portion 58 of the moving member 52, , the tip of the small-diameter nozzle FNS hits the abutting portion 57 and cannot enter any further, so that the valve body 71 of the opening/closing member 70 is not moved in the opening direction.

FIG. 8A and FIG. 8B, which is a sectional view taken along the line VIIIB-VIIIB, show the case where the small-diameter nozzle FNS is forcibly pushed in the movable direction DI of the moving member 52 from the state shown in FIGS. 7A and 7B. When the moving member 52 is pushed radially outward by the small-diameter nozzle FNS, the spring members 41 and 43 extend and the moving member 52 moves radially outward. However, as the moving member 52 moves, the abutting portion 57 provided at the lower end thereof also moves. Therefore, as shown in FIGS. As a result, the opening/closing member 70 cannot reach the position where the valve body 71 is opened.

From the state shown in FIGS. 7A and 7B, when the small-diameter nozzle FNS is pushed to the opposite side of the moving member 52, the conical guard 51 which is fixed and does not move does not allow the small-diameter nozzle FNS to move. Even if the guide members 53 and 54 of the moving member 52 are pressed at the same time while the tip of the small diameter nozzle FNS is in contact with the inclined portion of the conical guard 51 to move the moving member 52, as shown in FIG. Since the separation distance GD1 between 53 and 54 is slightly larger than the outer diameter of the small-diameter nozzle FNS, one end of the small-diameter nozzle FNS is brought into contact with the inclined portion of the conical guard 51, and the guide member 53 is placed on the side opposite to the tip of the small-diameter nozzle FNS. , 54 cannot be pushed at the same time. Therefore, when the small-diameter nozzle FNS is pushed in as it is, the small-diameter nozzle FNS moves along the inclined portion of the conical guard 51 toward the moving member 52, and finally enters the state shown in FIGS. 7A and 7B. The entry of the FNS is blocked by the abutting portion 57 .

Assuming that the tip of the small-diameter nozzle FNS is in contact with the inclined portion of the conical guard 51, the small-diameter nozzle FNS is displaced toward the guide member 53 as shown in FIG. Assume that 61 is pressed. In this case, when the small-diameter nozzle FNS is pushed in, the tip of the small-diameter nozzle FNS moves toward the moving member 52 and hits the end of the second guide slope 61 of the guide member 53 . direction outward (arrow DI direction). FIG. 11 shows the state of maximum movement. In this state, the tip of the small-diameter nozzle FNS is still in contact with the second guide slope 61 of the guide member 53 and pushes the entire moving member 52 radially outward through the guide member 53 .

However, as shown in FIG. 10A, which is a cross-sectional view taken along the line X-X of FIG. 2 It passes through the bottom end of the guide slope 61 . Since the portion below the lowermost end of the second guide slope 61 is formed as a second extended lower surface 66 that is recessed outward, the tip of the small-diameter nozzle FNS is aligned with the second guide slope 61 of the guide member 53 . You can no longer guess and press this. Therefore, the moving member 52, which has moved to the state shown in FIG. 10A until then, is pulled back to the position shown in FIG. As a result, the abutting portion 57 of the moving member 52 is arranged below the small-diameter nozzle FNS, and further entry of the small-diameter nozzle FNS is prevented.

The shape of the guide member 53 is not limited to the shape shown in FIG. 10A. This may be simply a space 68, as illustrated in FIG. 10B. Even in this way, the moving member 52 can be similarly moved when the tip of the small-diameter nozzle FNS passes. In the example shown in FIG. 10B, the space 68 side end portions of the second guide slope 61 and the first guide slope 62 are flat portions 66a and 67a of about 1 mm. good too. By providing the flat portions 66a and 67a, the strength of the end portion of the guide member 53 can be increased. It is also useful to round the flat portions 66a and 67a so that the tip of the small-diameter nozzle FNS slides easily. Further, the lower side of the second guide slope 61 and the first guide slope 62 of the guide member 53 may be any shape that does not push the guide member 53 when the tip of the small-diameter nozzle FNS passes through. Various shapes are possible, such as a shape that recedes planarly toward the outside, a shape that recedes due to a curved surface, and a shape that recedes in a step-like manner.

In the above operation, the tip of the small-diameter nozzle FNS is brought into contact with the guide member 53 and the moving member 52 is forcibly moved. Even if the tip of the FNS is pressed against the guide member 54 and the moving member 52 is forcibly moved, the moving member 52 operates in the same manner to prevent the entry of the small-diameter nozzle FNS. Of course, the guide members 53 and 54 do not have to have exactly the same shape, and may have different shapes. For example, at least one of the shape and direction of the second guide slope 63 and the first guide slope 64 of the guide member 54 and the shape of the lower space may be different. Considering the case where the user inserts the fuel nozzle FN into the fuel filler port 22, the angle of the fuel filler nozzle FN with respect to the fuel filler port 22 is often not symmetrical depending on the dominant hand. The shape of 54 may be determined.

As described above, when a small-diameter nozzle FNS having a smaller diameter (for example, an outer diameter of 19.0 mm) than a fueling nozzle with an outer diameter of 20.5 mm that is compatible with the fueling device FS is inserted, how does the discrimination unit 50 of the present embodiment perform? However, the abutting portion 57 of the moving member 52 abuts against the tip of the nozzle to block its entry. Therefore, it is possible to suppress the occurrence of a situation in which an incorrect fuel or liquid is supplied by mistakenly inserting a refueling nozzle that is not compatible with the refueling device FS.

Next, the operation of the discriminating section 50 when a fueling nozzle suitable for the fueling device FS is inserted will be described. A light oil supply nozzle having an outer diameter of 20.5 mm, that is, a large diameter nozzle FNL is used as a fuel supply nozzle suitable for the fuel supply device FS. FIG. 12 shows a state in which the large-diameter nozzle FNL is inserted into the filler port 22. As shown in FIG. The large diameter nozzle FNL does not enter the first portion of the discriminating section 50 because of its size. The distance GD1 between the guide member 53 and the guide member 54 shown in FIG. 7A is smaller than the outer diameter of the large diameter nozzle FNL. Even if the other end of the large-diameter nozzle FNL hits the inclined portion 58 side of the moving member 52, the other end of the large diameter nozzle FNL does not hit the first guide slopes 62, 64 of the guide members 53, 54. This is because the tip of 54 is hit. Therefore, as shown in FIG. 13, the large-diameter nozzle FNL is located on the opposite side of the discriminating portion 50 from the moving member 52, that is, the portion surrounded by the conical guard 51, the guide member 53, and the guide member 54 (this range is called the second part).

In this case, the tip of the large-diameter nozzle FNL is in contact with the inclined portion of the conical guard 51, the second guide slope 61 of the guide member 53, and the second guide slope 63 of the guide member . From this state, when the large-diameter nozzle FNL is further pushed in, each part receives a force directed radially outward. The two guide slopes 61 and 63 receive forces to move the moving member 52 relative to the conical guard 51 . This movement is shown in FIGS. 13 and 14. FIG. As the moving member 52 moves radially outward, the spring members 41 and 43 extend, and the abutting portion 57 at the lower end of the moving member 52 also moves outward.

As a result, as shown in FIG. 14, when the tip of the large-diameter nozzle FNL reaches the lower end of the conical guard 51, as shown in FIG. It is separated from the fixed flange portion 56 of the shape guard 51 by a maximum D1. Since this distance D1 is greater than the radial width of the impingement portion 57, the impingement portion 57 deviates radially outward from a position below the large diameter nozzle FNL and no longer abuts directly below the large diameter nozzle FNL. Part 57 does not exist. Moreover, even in this state, since the separation distance between the guide members 53 and 54 is smaller than the outer diameter of the large-diameter nozzle FNL, the moving member 52 cannot return to the default position. Therefore, the large-diameter nozzle FNL passes over the discriminating portion 50 without being blocked by the abutting portion 57, enters the opening/closing member 70 side, hits the valve body 71 of the opening/closing member 70, and resists the biasing force of the spring 75. and push it open toward the fuel tank FT side. In FIG. 8B showing a state in which the small diameter nozzle FNS is inserted while moving the moving member 52 radially outward, when the small diameter nozzle FNS reaches the lower end of the conical guard 51, the guide member 53 or the guide member 54 moves toward the small diameter nozzle FNS. , the moving member 52 returned to its default position and prevented the entry of the small diameter nozzle FNS. On the other hand, when the large-diameter nozzle FNL is inserted, the lowermost ends of the second guide slopes 61, 63 of the guide members 53 and 54 remain in contact with the large-diameter nozzle FNL. 10A, the large-diameter nozzle FNL can enter and push open the opening/closing member 70 open. The large-diameter nozzle FNL, which pushes open the opening/closing member 70 and enters, further advances through the fuel passage 90, pushes open the second opening/closing mechanism 30, and reaches a position where refueling is possible.

In the filler neck 100 described above, the discriminating portion 50 operates as follows to discriminate the outer diameter of the fuel nozzle FN.
[1] If the fuel nozzle FN inserted from the fuel filler port 22 is a small diameter nozzle FNS that is not compatible with this fuel filler device FS, as shown in the upper part of FIG. It is driven into the first portion on the side of the abutting portion 57 when viewed from 53 and 54, and the abutting portion 57 blocks the entry. At this time, if the small-diameter nozzle FNS is inserted around the first portion, even if the insertion position is slightly deviated from the first portion, the first guide slopes 62 and 64 of the guide members 53 and 54 allow the small-diameter nozzle FNS to is directed to the first part. The abutting portion 57 is positioned below the small-diameter nozzle FNS because the separation distance GD1 between the guide members 53 and 54 is greater than the outer diameter of the small-diameter nozzle FNS. cannot be moved radially outward with the contact portion with the conical guard 51 as a fulcrum. Further, even if the small-diameter nozzle FNS is forced to move, if the tip of the small-diameter nozzle FNS passes through the second guide slopes 61, 63 of the guide members 53, 54, the second expanded lower surface 66 below the second guide slopes 61, 63 will Since the guide members 53 and 54 are disengaged from the small-diameter nozzle FNS, the moving member 52 returns to its default position, and the abutment 57 prevents the small-diameter nozzle FNS from entering. be.

[2] On the other hand, when the fuel nozzle FN inserted from the fuel filler port 22 is a large diameter nozzle FNL that is a fuel nozzle suitable for this fueling device FS, as shown in the lower part of FIG. are guided by the second guide slopes 61 and 63 of the guide members 53 and 54 and driven into the second portion on the side opposite to the abutting portion 57 when viewed from the guide members 53 and 54 . At this time, since the separation distance GD1 between the guide members 53 and 54 is smaller than the outer diameter of the large-diameter nozzle FNL, the large-diameter nozzle FNL moves the guide members 53 and 54 into contact with the conical guard 51. can be pushed as a fulcrum to move the moving member 52 radially outward. As a result, the abutting portion 57 can be moved from below the large diameter nozzle FNL, and the large diameter nozzle FNL passes over the discriminating portion 50 and enters the fuel passage 90 to open the opening/closing member 70 .

As shown in FIG. 15, the first portion that guides the small-diameter nozzle FNS to prevent entry and the second portion that guides the large-diameter nozzle FNL to allow entry are continuous, and the combined shape of the two is the same. Corresponds to a continuous opening.

As described above, the fueling device FS of the first embodiment accurately discriminates the outer diameter of the fueling nozzle by using the separation distance GD1 between the guide member 53 and the guide member 54 as if it were a gauge. be able to. For this reason, if manufacturing tolerances are included, AdBlue refueling nozzles (outer diameter 19.0mm) and gasoline refueling nozzles (outer diameter 20.5mm), which have a difference of about 1mm, can be discriminated with high accuracy, making them compatible with refueling system FS. It is possible to reduce the risk of incorrectly supplying a different type of fuel by preventing the entry of an improper fueling nozzle. In this case, if the size of the second portion is set so that a nozzle having an outer diameter exceeding 20.5 mm cannot pass through, it is easy to prevent the entry of the light oil refueling nozzle. On the other hand, the fueling device FS is designed for light oil, and the separation distance between the guide members 53 and 54 is slightly larger than the nozzle diameter 20.5 mm for gasoline, which is the small-diameter nozzle FNS, and the nozzle for light oil, which is the large-diameter nozzle FNL. If the diameter is set to be smaller than 23.5 mm, for example 22.0 mm, and the diameters of the first portion and the second portion are designed accordingly, a fueling nozzle for light oil can enter and a fueling nozzle for gasoline can enter with a similar configuration. It is also easy to construct a fueling system FS in which the nozzle cannot enter. In this case, even if it is an AdBlue nozzle (outside diameter of 19 mm), it is discriminated as an unsuitable nozzle and is not allowed to enter, as in the case of the small diameter nozzle FNS.

B. Second embodiment:
Next, the filler neck 200 used in the fueling system FS as the second embodiment will be described. FIG. 16 is a perspective view showing a schematic configuration of a filler neck 200 as a second embodiment. As in FIG. 2, FIG. 16 is drawn with the front side of the member forming the fuel passage removed. The filler neck 200 of the second embodiment incorporates a first opening/closing mechanism 140 and a second opening/closing mechanism 130 from the side of the cover member 124 that forms the filler port 122 . Both the first opening/closing mechanism 140 and the second opening/closing mechanism 130 are within reach of the fuel nozzle FN, and are opened by inserting the fuel nozzle FN that fits the fueling device FS, as in the first embodiment. However, the fueling device FS of the second embodiment is designed for light oil, and the fueling nozzle for light oil (23.5 mm in outer diameter) is a large diameter nozzle FNL suitable for this fueling device FS. Refueling nozzles with an outer diameter of 20.5 or less are valved as non-conforming small diameter nozzles FNS.

As shown, the second opening/closing mechanism 130 is arranged below the fuel passage forming portion 120 on the side closest to the fuel tank, and opens and closes the fuel passage 190 . The second opening/closing mechanism 130 includes a second opening/closing valve 131 that opens and closes the fuel passage 190 and a spring (not shown) that is fixed to the fuel passage forming portion 120 and biases the second opening/closing valve 131 . The second on-off valve 131 is a flap that prevents backflow of liquid fuel from the fuel tank side to the insertion side, and includes a sealing member for sealing. The second on-off valve 131 is rotatably supported by a rotating shaft 132 provided in the fuel passage forming portion 120, and is biased by a spring in a direction in which the fuel passage 190 is closed.

The first opening/closing mechanism 140 provided closer to the filler port 122 than the second opening/closing mechanism 130 includes a discrimination portion 150 that functions as a gauge member and an operating member, and an opening/closing mechanism provided closer to the fuel tank FT than the discrimination portion 150. a member 170; The discriminating portion 150 is entirely made of resin. The configuration of the discriminating section 150 will be described with reference to FIGS. 17 to 29. FIG. The discriminating portion 150 has a circular opening into which a fueling nozzle suitable for the fueling device FS can enter. It comprises a holding member 145 and an activating member 110 provided in the middle of the conical guard 151 . The conical guard 151 has an upper edge on the outer periphery of the upper end, but unlike the first embodiment, the upper end of the conical guard 151 is not fixed. Therefore, when the fuel nozzle FN is inserted, the conical guard 151 moves as described later, depending on how the tip of the fuel nozzle FN hits.

The conical guard 151 of the second embodiment generally has a shape in which the conical guard 51 and the moving member 52 of the first embodiment are combined, except that the activating member 110 is provided. For this reason, guide members 153 and 154 are provided inside the conical guard 151, and an abutting portion 157 is provided at the lower end of the conical guard 151, as in the first embodiment. The guide member 153 and the guide member 154 face each other with a predetermined distance therebetween. In FIG. 18, the small-diameter refueling nozzle is indicated by a dashed line for reference. The upper half of the guide member 153 is provided with a second guide slope 161 and a first guide slope 162, which are slopes with different directions of inclination. A guide ramp 163 and a first guide ramp 164 are provided. Also, as shown in FIG. 17, the lower half of the guide member 153 is shaped to recede outward from the ends of the first and second guide slopes 162 and 161, respectively. The slope below the first guide slope 162 is called a first extended bottom surface 167 , and the slope below the second guide slope 161 is called a second extended bottom surface 166 . 18 to 20 do not show the shape of the lower half of the guide member 154 side, but the guide members 153, 154 have the same shape as the guide members 53, 54 of the first embodiment, and both It has a mirror-image relationship. The first guide slopes 162 and 164 of the guide members 153 and 154 face the abutting portion 157 side, and the second guide slopes 161 and 163 face the side opposite to the abutting portion 157 .

The abutting portion 157 at the bottom of the conical guard 151 has an arc shape that protrudes inside the conical guard 151 by a predetermined distance at the lower end of the conical guard 151 . FIG. 19 shows the shape of the opening of conical guard 151 when conical guard 151 is viewed from the filler port 122 side. In the drawing, the opening on the lower end side of the conical guard 151 assuming that the abutting portion 157 does not exist is indicated by a solid line as an opening shape GL. In plan view, of the opening shape GL in which the guide members 153 and 154 and the lower end of the conical guard 151 form a continuous opening, the side on which the abutting portion 157 exists is the first portion of the discriminating portion 150 . call. This first portion is designed to accommodate a fuel nozzle having a diameter smaller than that of the fuel nozzle FN that fits this fueling device FS. In the second embodiment, the distance GD2 between the radially inner ends of the guide members 153 and the radially inner ends of the guide members 154 is also 22 mm. The separation distance GD2 is slightly larger than the outer diameter of the small diameter nozzle FNS and slightly smaller than the outer diameter of the large diameter nozzle FNL.

The conical guard 151 is provided with an activation member 110 on the side opposite to the abutment 157 . The actuating member 110 is held at an angle slightly less than the slope of the conical guard 51, as shown in FIGS. The activating member 110 is held by the conical guard 51 by a rotating shaft 111 so as to be rotatable downward from this position, that is, in the direction of the opening/closing member 170 . Further, the starting member 110 is urged upward, that is, toward the fuel filler port 122 side, by a spring 112 with a predetermined elastic force F1.

Conical guard 51 with actuating member 110 is generally retained on retaining member 145 by engagement portion 143 . The holding member 145 includes slide members 145b and 145f provided at two locations along an axis passing through the centers of the activating member 110 and the abutting portion 157. As shown in FIG. The slide members 145b and 145f are slidably fitted into grooves provided in support columns 146 and 147 fixed to the fuel passage forming portion 120. As shown in FIG. Therefore, the holding member 145 is movably supported in the direction of the slide member 145b or the slide member 145f.

Movement of the retaining member 145 is caused by the tip of the refueling nozzle FN pressing against the ramp of the conical guard 151 or the actuating member 110 . The force required to slide the retaining member 145 radially in the fuel passage 190 by pressing on the ramp of the conical guard 151 or the actuating member 110 is referred to herein as the displacement force F2. In this embodiment, since the holding member 145 is not biased in any radial direction by a spring or the like, the elastic force F1 by the spring 112 and the moving force F2 are:
F1>>F2
relationship is established. A coil spring or the like is inserted between the supporting column 146 and the holding member 145 so that the holding member 145 is positioned closest to the supporting column 147 when the conical guard 151 and the activating member 110 are not subjected to the moving force F2. , and the holding member 145 may be biased toward the support column 147 with respect to the support column 146 . The position where the holding member 145 is closest to the support column 147 is called the default position of the conical guard 151 in this embodiment.

An opening/closing member 170 provided on the lower side of the discriminating portion 150 including the conical guard 151 and the holding member 145, that is, on the side of the fuel tank FT, has a valve body 171 that closes the first portion in FIG. A holding shaft 173 rotatably held in the fuel passage forming portion 20 and a spring 175 having one end fixed to the holding shaft 173 and the other end contacting the lower surface of the valve body 171 are provided. Since the valve body 171 is biased in the closing direction by the spring 175, it is kept in the position of closing the fuel passage 190 if no external force acts.

The operation of the filler neck 200 of the second embodiment described above will be described. When the small-diameter nozzle FNS is inserted into the fuel supply device FS and the tip of the small-diameter nozzle FNS is inserted into the first portion without coming into contact with the inclined portion 58 or the like of the cone-shaped guard 151, FIG. 2, the tip of the small-diameter nozzle FNS hits the abutting portion 157 at the lower end of the conical guard 151 and cannot enter any further, so that the valve body 171 of the opening/closing member 170 is not moved in the opening direction. Even if the insertion position of the small-diameter nozzle FNS is slightly deviated from the first portion, the small-diameter nozzle FNS is guided to the first portion by the first guide slopes 162 and 164 of the guide members 153 and 154 . These are the same as in the first embodiment.

On the other hand, as shown in FIG. 20, when the small-diameter nozzle FNS enters from the filler port 122 at a position avoiding the impinging portion 157, the end of the small-diameter nozzle FNS opposite to the impinging portion 157 side abuts the actuating member 110 provided on the conical guard 151 . In this state, as shown in FIG. 21, which is a cross-sectional view taken along line XXI-XXI of FIG. 20, the tip of the small-diameter nozzle FNS hits the starting member 110 and pushes it downward, that is, toward the opening/closing member 170 side. At this time, since the starting member 110 is urged upward by the spring 112 with an elastic force F1, a force FF is applied to the starting member 110 by the small-diameter nozzle FNS.
FF > F2
If so, the holding member 145 and thus the conical guard 151 are moved toward the support column 146 before the activation member 110 is pushed down.

As a result, as shown in FIG. 22, along with the movement of the holding member 145, the conical guard 151 also moves toward the support column 146, and the abutting portion 157 at the lower end of the conical guard 151 also moves in the direction of the arrow DR. As a result, it is located below the small diameter nozzle FNS. Therefore, if the small-diameter nozzle FNS is pushed inward in this state, the small-diameter nozzle FNS eventually pushes the 110 away in the direction of the arrow DR, and as shown in FIG. Gone.

In this way, in the filler neck 200 of the second embodiment, when the small diameter nozzle FNS that is not compatible with the fuel supply device FS is inserted from the filler port 122, the small diameter nozzle FNS can be inserted anywhere in the opening of the conical guard 151. It will be guided to the first portion shown at 20 and will be prevented from entering further by the abutment 157 . As in the first embodiment, even if the tip of the small-diameter nozzle FNS is forcibly pressed against the second guide slope 161 of the guide member 153 on one side to push down the activating member 110, the tip of the small-diameter nozzle FNS After passing the lowermost end of the second guide slope 161, the area below the lowermost end of the second guide slope 161 is formed as a second extended lower surface 166 that recedes outward. It is no longer possible to apply the tip to the second guide bevel 161 of the guide member 153 and push it. As a result, the actuating member 110 that has been pushed down returns to its original position by the force of the spring 112, and the holding member 145 and the conical guard 151 move toward the support column 146 side. As a result, the abutting portion 157 is arranged below the small-diameter nozzle FNS, and further entry of the small-diameter nozzle FNS is prevented. The shape of the guide member 153 below the second guide slope 161 and the first guide slope 162, that is, on the side of the opening/closing member 170, is the same as in the first embodiment except for the second extended bottom surface 166 and the first extended bottom surface 167. A shape, for example, a shape of a simple space may be used. The same applies to the guide member 154 as well.

On the other hand, when a large-diameter nozzle FNL having an outer diameter suitable for this fueling device FS is inserted from the fueling port 122, the large-diameter nozzle FNL is positioned at the first portion of the opening of the conical guard 151. Since the guide members 153 and 154 cannot be inserted in the way, they are inserted into the second portion of the opening of the conical guard 151, as shown in FIG. This state of the large-diameter nozzle FNL is shown in FIG. When the large-diameter nozzle FNL is further pushed in from this state, the end of the large-diameter nozzle FNL on the abutting portion 157 side hits the second guide slopes 161 and 163 of the guide members 153 and 154, and the large-diameter nozzle FNL is pushed in. The opposite side abuts the actuation member 110 . In this state, the large-diameter nozzle FNL is in contact with the guide members 153 and 154, so that the activating member 110 is pushed from there, and the conical guard 151 is not moved by the holding member 145. The force FF that pushes the large-diameter nozzle FNL is
FF > F1
If so, the activating member 110 rotates toward the opening/closing member 170 side. As the activating member 110 rotates, the activating member 110 retreats from the second portion that receives the large diameter nozzle FNL in plan view, and as shown in FIG. is inserted into the second portion of the opening of the

The movement of each part at this time is shown in FIGS. 27 and 28. FIG. A large-diameter nozzle FNL is inserted into the filler port 122, and the tip thereof contacts the second guide slopes 161, 163 of the guide members 153, 154 and the activating member 110 (Fig. 22). When the large-diameter nozzle FNL is further inserted, the activating member 110 rotates, and its tip moves in the direction of the arrow DD (FIG. 27), that is, toward the opening/closing member 170 and radially outward. Furthermore, when the large-diameter nozzle FNL is inserted, the tip of the activating member 110 opens to a position where it contacts the side surface of the large-diameter nozzle FNL (FIG. 28). During this time, the conical guard 151 does not move because the large diameter nozzle FNL is in contact with the second guide slopes 161 and 163 of the guide members 153 and 154, and it abuts under the large diameter nozzle FNL. Part 157 never moves. As a result, as shown in FIG. 29, the large-diameter nozzle FNL, which is the fueling nozzle FN suitable for the fueling device FS, is located in the area surrounded by the guide members 153, 154 and the rotated tip of the actuating member 110, that is, as shown in FIG. The valve body 171 of the opening/closing member 170 is pushed open by the valve body 171 of the opening/closing member 170 , and enters the fuel passage 190 . The large-diameter nozzle FNL, which pushes open the opening/closing member 170 and enters, further advances through the fuel passage 90, pushes open the second opening/closing mechanism 130, and reaches a position where refueling is possible.

In the filler neck 200 described above, the discriminating portion 150 operates as follows to discriminate the outer diameter of the fuel nozzle FN.
(A) If the fuel nozzle FN inserted from the fuel filler port 122 is a small-diameter nozzle FNS that is not compatible with this fueling device FS, the small-diameter nozzle FNS is positioned at the abutment portion when viewed from the guide members 153 and 154. It is driven into the first portion on the 157 side, and its entry is blocked by the abutting portion 157. - 特許庁At this time, if the small-diameter nozzle FNS is inserted around the first portion, even if the insertion position is slightly deviated from the first portion, the small-diameter nozzle FNS is is directed to the first part. The abutting portion 157 is positioned below the small diameter nozzle FNS because the separation distance GD2 between the guide member 153 and the guide member 154 is larger than the outer diameter of the small diameter nozzle FNS. This is because the conical guard 151 cannot be moved radially outward (in the direction of the arrow DR) with the contact portion as a fulcrum. Therefore, the abutting portion 157 prevents the entry of the small-diameter nozzle FNS. Moreover, even if it is forced to move, if the tip of the small diameter nozzle FNS passes through the second guide slopes 161, 163 of the guide members 153, 154, the second expanded lower surface 166 below the second guide slopes 161, 63 will Since the guide members 153 and 154 are disengaged from the small-diameter nozzle FNS, the holding member 145 returns to its default position, and the abutment 157 prevents the small-diameter nozzle FNS from entering. be.

(B) On the other hand, when the fuel nozzle FN inserted from the fuel filler port 122 is the large-diameter nozzle FNL, which is a fuel nozzle suitable for this fuel filler FS, the distance GD2 between the guide member 153 and the guide member 154 is , is smaller than the outer diameter of the large-diameter nozzle FNL, the large-diameter nozzle FNL always abuts on the second guide slopes 161 and 163 of the guide members 153 and 154 . As a result, even if the large-diameter nozzle FNL enters, the cone-shaped guard 151 does not move, while the activating member 110 rotates. enter the As a result, the large-diameter nozzle FNL passes over the discriminating portion 150 and enters the fuel passage 190 to open the opening/closing member 170 .

As described above, the fueling device FS of the second embodiment accurately discriminates the outer diameter of the fueling nozzle by using the separation distance GD2 between the guide member 153 and the guide member 154 as if it were a gauge. be able to. For this reason, including the manufacturing tolerance, it is possible to accurately discriminate between gasoline refueling nozzles (outer diameter 20.5mm) and light oil refueling nozzles (outer diameter 23.5mm), which have a difference of about 2mm, and is compatible with the refueling system FS. As is the case with the first embodiment, it is possible to reduce the risk of incorrectly supplying a different type of fuel by preventing the entry of an improper fuel nozzle. In the case of the filler neck 200 described above, even if it is a nozzle for AdBlue (outer diameter 19.0 mm), it is discriminated as an unsuitable nozzle and is not allowed to enter, which is the same as the small diameter nozzle FNS. . On the other hand, the fueling system FS is designed for gasoline, and the separation distance between the guide members 153 and 154 is slightly larger than the AdBlue nozzle diameter of 19.0 mm and smaller than the gasoline nozzle diameter of 20.5 mm, for example 19 mm. 75 mm, and designing the diameters of the first and second portions in accordance with this, a fueling device FS is constructed in which a gasoline fueling nozzle can enter, but an AdBlue nozzle cannot enter, with a similar configuration. It is also easy to In this case, if the size of the second portion is set so that a nozzle having an outer diameter of 22 mm or more cannot pass through, it is easy to prevent the light oil refueling nozzle from entering.

C. Other embodiments:
In the several embodiments described above, the guide members 53, 54 and 153, 154 are provided with the first guide slopes 62, 64, 162, 164 and the second guide slopes 61, 63, 161, 163. Only one of the first guide slope and the second guide slope may be provided. Further, the first guide slopes 62, 64 and 162, 164 of the guide members 53, 54 and 153, 154, or the second guide slopes 61, 63, 161, 163 are planar slopes, but curved slopes may also be used. good. In this case, it may be a curved surface that is convex outward or a curved surface that is concave inward. Of course, a plurality of planes may be combined to constitute the second guide slope. In this embodiment, a pair of left and right guide members are provided at the joint between the first portion and the second portion, but in addition to this, another guide member may be added to the outer edge of the second portion. Further, the second guide slopes of the pair of left and right guide members are in a mirror image relationship, but the direction and angle of the slopes may be different between the left and right guide members as long as the large diameter nozzle FNL can be guided to the second portion. .

In the above embodiments, the lower halves of the guide members 53, 54 and 153, 153 consist of two planes, e.g. However, a configuration without the first extended lower surface 67 or the first extended lower surface 167 may be employed. Also, the lower halves of the guide members 53, 54 and 153, 154 may be conical or truncated cone-shaped with downward sharpening. Alternatively, it may have a shape that retreats outward with a step. Of course, it is not necessary to be limited to a shape that recedes due to an inclination or a step, as long as it is a shape in which a space is formed in a predetermined range from the inner peripheral edge of the opening toward the outside. It is sufficient that the tip of the small-diameter nozzle FNS that has been formed has a shape that can no longer come into contact with the guide members 53 and 54 .

In the above embodiment, the discriminating portions 50 and 150 are made of resin. , the moving member 52 including the abutting portions 57 and 157 and the conical guard 151 may be made of a material stronger than resin, such as metal. Alternatively, only the abutting portions 57 and 157 may be made of metal and may be insert-molded into the moving member 52 and conical guard 151 made of resin.

In the first embodiment, the moving member 52 is movably attached to the conical guard 51 by the resin spring member 41, but a plate spring or the like may be used. Alternatively, a spring may be provided so as to urge the moving member 52 from behind in the direction in which the moving flange portion 55 comes into contact with the fixed flange portion 56 . In this case, it is also possible to use an elastic body or the like instead of the spring.

In the second embodiment, the activating member 110 has a substantially rectangular parallelepiped shape, but the shape does not matter. The conical guard 151 may have a shape tapering toward the tip in accordance with the fact that the opening becomes narrower as it goes downward. Also, the activating member 110 does not necessarily have to rotate. For example, the tip of the cone guard 151 is inclined at the same degree as the slope of the conical guard 151, and when the tip of the large-diameter nozzle FNL hits the tip of the activating member 110, the activating member 110 moves against the conical guard 151. 22 may be moved in the direction of the arrow DR shown in FIG. If the force F1 required to move the activating member at this time is made larger than the force F2 required to move the conical guard 151 to which the activating member 110 is attached in the DR direction, the same operation as in the second embodiment can be achieved. It is easy to achieve the effect.

The conical guard 51 and the moving member 52 of the first embodiment, or the conical guard 151 of the second embodiment have a so-called funnel shape that narrows toward the fuel passages 90 and 190. The first position on the side and the second position closer to the fuel tank than the first position may have a shape in which the inner diameter is narrower at the second position, and may be a spiral shape. Alternatively, the shape may be a combination of a plurality of steps each inclined.

In the above-described embodiment, the fueling device FS has a so-called capless structure, and the opening/closing members 70 and 170 serve as flaps for closing the fueling ports 22 and 122 except when fueling. The opening/closing members 70, 170 may be provided independently of the flap for the capless fueling system FS. Alternatively, it may be provided in the second opening/closing mechanisms 30 and 130 .

The present disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from the scope of the present disclosure. For example, the technical features in the embodiments corresponding to the technical features in the respective modes described in the Summary of the Invention column may be used to solve some or all of the above problems, or Substitutions and combinations may be made as appropriate to achieve part or all. Also, if the technical features are not described as essential in this specification, they can be deleted as appropriate.

20... Fuel passage forming part 22... Refueling port 23... Return part 24... Cover member 26... Fuel vapor port 27... Supporting member 30... Second opening/closing mechanism 31... Second opening/closing valve 32... Rotation Axle 33 Sealing member 40 First opening/closing mechanism 41, 43 Spring member 44 Strut member 46 End 50 Discriminating portion 51 Conical guard 52 Moving member 53, 54 Guide member 55 Moving flange portion 56 Fixed flange portion 57 Abutting portion 58 Inclined portion 59 Upper edge portion 61, 63 Second guide slope 62, 64 First guide slope , 66... Second expansion lower surface 67... First expansion lower surface 68... Space part 70... Opening/closing member 71... First opening/closing valve 73... Holding shaft 75... Spring 90... Fuel passage 100... Filler neck , 110...Starting member 111...Rotating shaft 112...Spring 120...Fuel passage forming part 122...Fuel inlet 130...Second opening/closing mechanism 131...Second opening/closing valve 132...Rotating shaft 140...First Opening/closing mechanism 143 Engagement portion 145 Holding member 145b, 145f Slide member 146, 147 Support column 150 Discrimination portion 151 Conical guard 153, 154 Guide member 157 Strike Parts 161, 163... Second guide slope 162, 164... First guide slope 166... Second expansion lower surface 167... First expansion lower surface 170... Opening/closing member 171... Valve body 173... Holding shaft 175 ... spring, 190 ... fuel passage, 200 ... filler neck

Claims (8)

A refueling device that receives a refueling nozzle when refueling fuel,
a fuel filler opening forming part including a fuel filler opening for receiving a fuel filler nozzle and forming a part of a fuel passage from the fuel filler opening to the fuel tank;
a first portion which is an opening corresponding to an outer diameter of a small-diameter nozzle provided in a reachable range of the fueling nozzle inserted from the fueling port and having an outer diameter smaller than that of the fueling nozzle compatible with the fueling device; and the fueling device. a discriminating portion that constitutes a series of openings consisting of a second portion that is an opening having a shape corresponding to the outer diameter of a large-diameter nozzle that conforms to
an abutting member provided closer to the fuel tank than the opening of the discriminating portion and with which the tip of the small-diameter nozzle guided to the first portion abuts;
an opening/closing member provided closer to the fuel tank than the discriminating portion, biased in a closing direction from the fuel tank side, and opened by the large-diameter nozzle that has passed through the opening;
The discriminating section includes an operating member that guides the inserted small diameter nozzle to the first section when the small diameter nozzle is inserted into the second section ,
In the discriminating portion, the second portion of the opening is smaller than the outer diameter of the large-diameter nozzle, and the boundary between the second portion and the first portion is smaller than the outer diameter of the large-diameter nozzle. The inner dimension is larger than the outer diameter of the nozzle,
the operating member includes a moving member that does not move when the small diameter nozzle is inserted into the second portion but moves when the large diameter nozzle is inserted;
The moving member moves the inner dimension portion in the direction of the first portion by the movement, and expands the second portion beyond the outer shape of the large-diameter nozzle . The actuating member has a shape in which an inner diameter is narrower at the second position than at a first position on the filler port side and at a second position on the fuel tank side from the first position. 2. The refueling system of claim 1, enclosing a . The moving member has a shape in which an inner diameter is narrower at the second position than at a first position on the fuel filler side and at a second position on the fuel tank side from the first position. 2. The fueling system according to claim 1 , wherein the opening forming member surrounds the . a guide member formed at a predetermined height on the fuel filler port side at a position where the first portion and the second portion of the discriminating portion are connected,
The movement of the moving member is realized by inserting the large-diameter nozzle in contact with the guide member.
The lubricating device according to claim 1 or 3. A refueling device that receives a refueling nozzle when refueling fuel,
a fuel filler opening forming part including a fuel filler opening for receiving a fuel filler nozzle and forming a part of a fuel passage from the fuel filler opening to the fuel tank;
a first portion which is an opening corresponding to an outer diameter of a small-diameter nozzle provided in a reachable range of the fueling nozzle inserted from the fueling port and having an outer diameter smaller than that of the fueling nozzle compatible with the fueling device; and the fueling device. a discriminating portion that constitutes a series of openings consisting of a second portion that is an opening having a shape corresponding to the outer diameter of a large-diameter nozzle that conforms to
an abutting member provided closer to the fuel tank than the opening of the discriminating portion and with which the tip of the small-diameter nozzle guided to the first portion abuts;
an opening/closing member provided closer to the fuel tank than the discriminating portion, biased in a closing direction from the fuel tank side, and opened by the large-diameter nozzle passing through the opening;
with
The discriminating section includes an operating member that guides the inserted small diameter nozzle to the first section when the small diameter nozzle is inserted into the second section,
The actuating member includes an activating member with which the tip of the fuel nozzle inserted from the fuel filler port abuts,
the activating member is positioned such that the second portion has an inner dimension that is smaller than the outer diameter of the large diameter nozzle;
When the tip of the small diameter nozzle comes into contact with the starting member, the abutment member is moved toward the starting member, and when the large diameter nozzle comes into contact with the starting member, the starting member moves. thereby expanding the inner dimension of the second portion beyond the outer diameter of the large diameter nozzle ;
refueling device. The actuating member has a shape in which an inner diameter is narrower at the second position than at a first position on the filler port side and at a second position on the fuel tank side from the first position. 6. A refueling system according to claim 5, enclosing a . a guide member formed at a predetermined height on the fuel filler port side at a position where the first portion and the second portion of the discriminating portion are connected,
A part of the tip of the large-diameter nozzle inserted from the fuel inlet contacts the guide member, thereby realizing movement of the activating member.
The lubricating device according to claim 5 or 6 . The guide member is separated from the small-diameter nozzle when the small-diameter nozzle is in contact with the activating member,
The actuating member is
between a first position on the filler port side and a second position on the fuel tank side from the first position, the second position surrounds the opening with a narrower inner diameter,
When the small-diameter nozzle is inserted in contact with the activating member, the impingement member is moved by a force smaller than the force required for the movement of the activating member by the small-diameter nozzle.
The lubricating device according to claim 7.

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