JP2018052314A - Tank cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tank cap for a fuel tank, the tank cap being able to restrict the influence of rainwater while improving the degree of freedom in design.SOLUTION: A tank cap 20 opens/closes an oil feed port 15a in a fuel tank 15 for a motor cycle. The tank cap 20 comprises: a cap body 22 that closes the oil feed port 15a; an operation part 24 provided on the cap body 22 and used for a locking operation of the cap body 22; and a cover 26 supported by the cap body 22 and covering the operation part 24. The cap body 22 has a recess 34 accommodating the cover 26 and opened outwards, with the cover 26 covering the operation part 24. Between the operation part 24 and the opened portion 36 of the front end of the recess 34 in the cap body 22, an entry prevention wall 38 is provided to prevent rainwater that has entered from the opened portion 36 from flowing toward the operation part 24.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a tank cap that opens and closes a fuel filler port of a fuel tank of a saddle-ride type vehicle or the like.

  A tank cap of a fuel tank of a straddle-type vehicle such as a motorcycle is provided with an operation portion for performing a locking operation on a cap body that closes a fuel filler opening, and this operation portion is opened and closed by a cover (for example, Patent Documents) 1).

Japanese Patent No. 4271167

  In the tank cap of Patent Document 1, a cover is accommodated in a recess formed in the cap body in order to improve the appearance. The tank cap has an opening for inserting a finger between the cover and the cap body. The deeper the recess for better operability, the easier it is for rainwater to collect in the recess.

  An object of the present invention is to provide a tank cap for a fuel tank that can suppress the influence of rainwater while improving the degree of freedom in design.

  In order to achieve the above object, a tank cap according to the present invention is a tank cap that opens and closes a fuel filler opening of a fuel tank, and includes a cap body that closes the filler opening, a cap body that is provided on the cap body, An operation unit that performs a locking operation, and a cover that is configured to be movable between a closed state that closes the operation unit and an exposed state that exposes the operation unit and is supported by the cap body. The cap body is formed with a recess in which the cover is accommodated in the closed state and is opened outward at an open portion. In at least one of the cap body and the cover, intrusion suppression at a position between the open portion of the recess and the operation portion is smaller than the remaining portion in the distance between the cap body and the cover facing each other. There is a wall.

  According to this configuration, even when rainwater accumulates in the recess, the rainwater heading toward the operation unit can be suppressed by the rainwater colliding with the intrusion prevention wall. Thus, the freedom degree of design of a recess shape can be improved by suppressing the influence of rainwater. For example, it is possible to improve the operability by deepening the recess and to prevent the intrusion prevention wall from adversely affecting rainwater easily. Thus, for example, it is possible to achieve both improvement in operability and suppression of adverse effects caused by rainwater accumulation.

  In this invention, it is preferable that the said open part is formed in the front of a vehicle body with respect to the said operation part, and the said infiltration suppression wall is located ahead of the said operation part. According to this configuration, it is possible to prevent the rainwater from heading to the operation portion due to inertia at the time of acceleration forward by the intrusion prevention wall.

  In the present invention, the recess is preferably formed to be larger than the cover in the closed state in plan view. According to this structure, since the whole cover is accommodated in the recess, the appearance is good. Even when the cover is housed in the recess, the cover can be operated by placing a finger on the step between the cover and the cap body, so that the operability of the cover is not impaired. Furthermore, rainwater tends to accumulate in the recess when the recess is larger than the cover, but rainwater heading to the operation unit can be suppressed by the intrusion prevention wall.

  In this case, it is preferable that the intrusion prevention wall is formed at a position covered with the cover in the closed state in plan view. According to this configuration, since the intrusion prevention wall is not exposed in the closed state of the cover, it is possible to prevent the appearance from being deteriorated by forming the intrusion prevention wall. Moreover, it is preferable that the said invasion suppression wall is provided in the position which opposes the center of the said operation part from a radial direction in the said obstruction | occlusion state, and is formed smaller than the width direction dimension of the said recess. According to this configuration, since rainwater flows between the intrusion prevention wall portion and the side wall of the recess, it is possible to prevent rainwater from entering the operation portion over the intrusion prevention wall portion.

  In the present invention, a guide surface that guides rainwater flowing toward the operation portion to the outside in the width direction of the recess is formed on the surface opposite to the surface facing the operation portion. It is preferable. According to this configuration, since rainwater flows along the guide surface, it is possible to prevent rainwater from entering the operation portion over the intrusion prevention wall portion.

  In the present invention, it is preferable that the intrusion prevention wall protrudes upward from the bottom of the recess. According to this structure, it is easy to dam the rain water which goes to an operation part along the bottom face of a recess. In this case, the intrusion prevention wall is formed at a position covered with the cover in the closed state in a plan view, and the upper surface of the intrusion prevention wall is relative to the intrusion prevention wall in the cover in the closed state. It is preferable that it is located above the lower surface of the part opposite to the operation part. According to this configuration, the labyrinth structure is configured by the cover and the intrusion prevention wall, and intrusion of rainwater into the operation unit is prevented.

  The motorcycle according to the present invention includes the tank cap of the fuel tank according to the present invention, wherein the opening is formed in front of the vehicle body with respect to the operation portion, and the intrusion prevention wall is positioned in front of the operation portion. . According to this configuration, it is possible to prevent the rainwater from heading to the operating portion due to the inertia during acceleration, in particular, by the intrusion prevention wall.

  FIGS. 7A to 7F are six views showing the tank cap. When attached to the fuel tank, only the cap body of the tank cap is visible from outside, and the other parts are not visible from outside.

  FIGS. 8A to 8D are a plan view, a left side view, a front view, and a rear view of the tank cap in which only the intrusion prevention wall 38 is shown by a solid line. Since the intrusion prevention wall 38 is short, it is not visible from the front, the side, the lower side, and the rear side even when the cover is opened. Since the intrusion prevention wall 38 does not appear in the right side view and the left side view, the left side view is omitted. Further, the intrusion prevention wall 38 does not appear in the front view, the rear view, and the bottom view. Therefore, the bottom view is omitted. FIG. 9 is an enlarged perspective view showing the infiltration prevention wall 38 in the tank cap. The intrusion prevention wall 38 indicated by a solid line protrudes upward from the upper surface of the cap body.

  According to the tank cap of the fuel tank of the present invention, even when rainwater enters from the opening of the recess, the rainwater can be prevented from heading toward the operation portion by the intrusion prevention wall. Therefore, it is possible to prevent rainwater from affecting the operation unit.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a front portion of a motorcycle that is a type of saddle riding type vehicle provided with a tank cap for a fuel tank according to a first embodiment of the present invention. It is a top view which shows the same tank cap. It is a top view which shows the exposure state of the tank cap. It is a side view showing the tank cap. It is a perspective view which shows the same tank cap. It is sectional drawing which shows the tank cap. (A)-(f) is a 6-plane figure which shows the cap main body of the tank cap. (A)-(d) is the top view, side view, front view, and back view which show the infiltration prevention wall of the tank cap. It is a perspective view which expands and shows the infiltration suppression wall of the tank cap.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present specification, “left side” and “right side” refer to the left and right sides as viewed from a rider riding in a vehicle.

  FIG. 1 is a side view showing a front portion of a motorcycle which is a kind of saddle riding type vehicle provided with a tank cap for a fuel tank according to a first embodiment of the present invention. A body frame FR of the motorcycle has a main frame 1 that forms a front half and a rear frame 2 that forms a rear half. A head pipe 4 is provided at the front end of the main frame 1, and a front fork 8 is pivotally supported on the head pipe 4 via a steering shaft (not shown). A steering handle 6 is fixed to the upper end portion of the front fork 8, and a front wheel 10 is attached to the lower end portion of the front fork 8.

  A swing arm bracket 9 is provided at the rear end of the main frame 1. A swing arm 12 is pivotally supported around a pivot shaft 16 attached to the swing arm bracket 9 so as to be swingable up and down. A rear wheel (not shown) is rotatably supported at the rear end of the swing arm 12.

  An engine E is attached to the front side of the swing arm bracket 9 below the main frame 1. The rotational force of the engine E is transmitted to a rear wheel (not shown) via a power transmission member 11 such as a drive chain. A fuel tank 15 is disposed above the main frame 1, and a seat 18 is supported on the rear frame 2.

  The fuel tank 15 is disposed between the handle 6 and the seat 18 between the front and rear wheels. The fuel tank 15 is disposed such that the upper surface thereof is exposed above the vehicle body. A fuel filler port 15 a is formed at the top of the fuel tank 15. The upper surface of the fuel tank 15 is formed in a curved shape in a side view so that the middle part in the front-rear direction is the uppermost part.

  On the upper surface of the fuel tank 15, a tank cap 20 that opens and closes the fuel filler opening 15 a of the fuel tank 15 is provided. The tank cap 20 is provided at the center in the vehicle width direction on the upper surface of the fuel tank 15 in plan view. Here, the plan view means that viewed from the direction away from the fuel tank 15 along the axial center of the fuel filler opening 15a.

  As shown in FIG. 2, the tank cap 20 includes a cap body 22 that closes the fuel filler opening 15 a (FIG. 1), and an operation unit 24 (FIG. 3) that is provided on the cap body 22 and that locks the cap body 22. And a cover 26 that is supported by the cap body 22 and covers the operation unit 24. The operation part 24 has a cylindrical peripheral wall 44, and a key hole 25 (FIG. 3) is formed inside thereof. In other words, the peripheral wall 44 is formed so as to go around the key hole 25 around the axis of the fuel filler opening 15a. The cover 26 is configured to be movable between a closed state (the state shown in FIG. 2) that closes the operation unit 24 and an exposed state (the state shown in FIG. 3) that exposes the operation unit 24. The cap body 22 and the cover 26 are formed symmetrically in plan view.

  As shown in FIG. 5, the tank cap 20 includes a ring-shaped base member 51 fixed to the fuel tank, and the cap body 22 rotatably supported by the base member 51 via a hinge member 52. Have. When a key is inserted into the key hole 25 of the operation portion 24 and a lock operation is performed, the pair of lock pieces 53 project radially outward and are locked to the lower edge of the oil filler port 15a (FIG. 1), and the cap body 22 Is locked. When the lock (rotation prevention) is released by the key operation of the operation unit 24, the cap body 22 can be rotated upward, and the fuel filler opening 15a can be opened.

  As shown in FIG. 3, the cover 26 includes a hinge portion 28 supported by the rear end portion of the cap main body 22, and a cover main body 30 that opens and closes the operation portion 24 by rotating up and down around the hinge portion 28. have. In other words, one end (rear end) of the cover 26 is supported by the cap main body 22 so as to be angularly displaceable about the angular displacement axis that intersects the vertical direction, in this embodiment, the vehicle width direction axis. A support portion (hinge portion) 28 is formed. As shown in FIG. 2, a knob portion 32 for hooking a finger is formed on the other end portion (front end portion) of the cover 26. As shown in FIG. 6, the bottom surface of the knob portion 32 is inclined downward toward the center of the tank cap 20 so that a finger can be easily caught.

  As shown in FIG. 4, in the closed state, the upper surface of the cap body 22 and the upper surface of the cover 26 are formed to be substantially flush with each other. Specifically, the upper surface of the cap body 22 and the upper surface of the cover 26 are arranged so as to be substantially horizontal. In the present embodiment, the upper surface of the cover 26 is slightly higher than the upper surface of the cap body 22.

  As shown in FIG. 3, a recess 34 that extends from the front end to the hinge portion 28 at the rear end is formed on the upper surface of the cap body 22. The cover 34 is accommodated in the recess 34 in the closed state. The cap body 22 has an open portion 36 that is open outward, specifically, upward, at the front end thereof. A gap is formed between the knob portion 32 and the bottom surface of the recess 34 through which the tip of the finger is inserted through the open portion 36. In the present embodiment, the open portion 36 is a portion that is not covered with the cover 26 in the recess 34 in the closed state of the cover 26, and here is the front portion of the recess 34. That is, the recess 34 is formed larger than the closed cover 26 in a plan view.

  An inclined groove 60 extending along the front-rear direction is formed in a portion of the base member 51 in front of the recess 34. As shown in FIG. 6, the bottom surface of the inclined groove 60 is inclined downward toward the rear and continues to the bottom surface of the recess 34. Since the finger is guided to the recess 34 along the inclined groove 60, the operability of the cover 26 is good.

  As shown in FIG. 5, a pair of left and right support portions 45 that support the hinge portion 28 of the cover 26 are formed at the rear end of the recess 34. A groove-like opening 50 extending in the vehicle width direction (left-right direction) is formed between the left and right support portions 45, 45 in the recess 34.

  In the recess 34 of the cap main body 22 shown in FIG. 3, an intrusion prevention wall 38 that prevents rainwater collected at the bottom from heading toward the operation unit 24 is formed. The intrusion prevention wall 38 is formed on the opposite side of the operating portion 24 from the hinge portion 28, specifically on the front side, and is erected upward from the bottom of the recess 34. In other words, the intrusion prevention wall 38 is provided at a position between the open portion 36 and the operation portion 24 in the recess 34. As shown in FIG. 6, by providing the intrusion prevention wall 38, the distance between the cap body 22 and the cover 26 in the up-down direction, in this embodiment, the distance between the upper surface 38 a of the intrusion prevention wall 38 and the lower surface of the cover 26. (A vertical gap G2 described later) is smaller than the remaining portion.

  The intrusion prevention wall 38 is formed at a position covered from above by the cover body 30 of the closed cover 26 in a plan view of FIG. Thereby, since the intrusion prevention wall 38 is not exposed when the cover 26 is closed, the appearance is not impaired.

  As shown in FIG. 6, the upper surface 38 a of the intrusion prevention wall 38 is located above the lower surface 26 a of the portion opposite to the operation unit 24 with respect to the intrusion prevention wall 38 in the closed cover 26. Specifically, the cover main body 30 has a protruding wall 40 that is located in front of the intrusion prevention wall 38 and protrudes downward in a closed state, and the lower surface 26 a of the protruding wall 40 is higher than the upper surface 38 a of the intrusion prevention wall 38. Located below.

  As shown in FIG. 3, the intrusion prevention wall 38 is provided at a position facing the center 24 a of the operation portion 24 from the front, that is, the width direction center 38 b of the intrusion prevention wall 38 and the center of the operation portion 24. 24a are arranged in the front-rear direction. The width direction dimension D1 of the intrusion prevention wall 38 is formed smaller than the width direction dimension D2 of the recess 34. In other words, a gap S <b> 1 through which rainwater entering from the open portion 36 passes is formed between the width direction both ends 38 c, 38 c of the intrusion prevention wall 38 and the side walls 34 a, 34 a of the recess 34.

  Here, the “width direction” refers to a direction that is in a plane perpendicular to the axial center of the fuel filler opening 15 a and is orthogonal to the flow direction connecting the center position and the intrusion prevention wall. In the present embodiment, the width direction is set to the vehicle width direction (the left-right direction of the vehicle body). The width direction of the intrusion prevention wall 38 and the width direction of the recess 34 are the same direction.

  A rear surface 38r of the intrusion prevention wall 38 near the operation portion 24 is formed in a partial cylindrical surface shape. That is, the rear surface 38 r has a shape along the circular operation unit 24. A guide surface 35 for guiding rainwater to the outside in the width direction of the recess 34 is formed on the front surface 34 f of the intrusion prevention wall 38 on the side opposite to the operation portion 24. Specifically, the guide surface 35 is curved in a partial cylindrical shape, and guides rainwater into the gap S1 between the width direction both ends 38c of the intrusion prevention wall 38 and the side wall 34a of the recess 34.

  The peripheral wall 44 surrounding the key hole 25 of the operation unit 24 is formed to protrude from the bottom of the recess 34, and the protrusion height of the intrusion prevention wall 38 shown in FIG. 6 is smaller than the protrusion height of the peripheral wall 44. The protrusion height of the intrusion prevention wall 38 is 0.8 to 1.2 times the protrusion height of the peripheral wall 44. The vertical gap G1 between the peripheral wall 44 of the operation unit 24 and the cover main body 30 is smaller than the vertical gap G2 between the intrusion prevention wall 38 and the cover main body 30. In this embodiment, the metal peripheral wall 44 and the resin cover main body 30 are in contact (G1 = 0). Thereby, even when rainwater gets over the intrusion prevention wall 38, rainwater can be prevented from entering the operation portion 24.

  As shown in FIG. 3, the width of the recess 34 decreases as the distance from the operation unit 24 increases. Specifically, the width direction dimension gradually increases from the front end toward the operation unit 24, the width direction dimension becomes maximum in the vicinity of the operation unit 24, and the width direction dimension extends from the operation unit 24 toward the rear hinge unit 28. Gradually get smaller. A gap S2 through which rainwater passes is also formed between both ends 44a, 44a in the width direction of the peripheral wall 44 and the side surfaces 34a, 34a of the recess 34. A gap S1 between both ends 38a of the intrusion prevention wall 38 and the side wall 34a of the recess 34 is set to be smaller than a gap S2 between both ends 44a of the peripheral wall 44 and the side wall 34a of the recess 34. Here, since the side walls 34a, 34a of the recess 34 are inclined outward in the width direction as the distance from the bottom surface of the recess 34 increases, the gaps S1, S2 are prevented from entering the vertical middle point of the side wall 34a. The distance between the wall 38 and the peripheral wall 44 is defined.

  A recess 34 is also formed in the region opposite to the hinge shaft with respect to the cover 26. In the present embodiment, a recess 34 is also formed in a front region with respect to the cover 26. Thereby, by putting a finger into the recess 34 located in front of the cover 26, the finger can be put on the tip portion of the cover 26 that is farthest from the hinge shaft. Thus, the driver can open the cover 26 without applying a large force by utilizing the lever principle.

  The guide surface 35 has an inclined surface that inclines in the direction away from the operation unit 24 along the width direction as it approaches the operation unit 24 along the flow direction. In the present embodiment, the guide surface 35 is inclined outward in the width direction toward the rear. Specifically, the guide surface 35 is formed in a U-shape in which the center in the width direction is located at the foremost and is inclined rearward from the center in the width direction toward the outside in the width direction. Thereby, rainwater flowing toward the operation unit 24 along the flow direction flows outward in the width direction while maintaining movement in the flow direction along the guide surface 35. Thereby, it is possible to prevent rainwater from getting over the intrusion prevention wall 38.

  The upper surface of the portion where the key hole 25 is formed is located below the upper surface of the peripheral wall 44 shown in FIG. In the closed state, the upper surface of the peripheral wall 44 faces the lower surface of the cover 26. For example, the intrusion of rainwater can be prevented by bringing the upper surface of the peripheral wall 44 into contact with the lower surface of the cover 26.

  The cover 26 is formed in a substantially plate shape. The cover 26 is angularly displaced about the axis of the hinge portion 28 and arranged parallel to the upper surface of the cap, whereby the operation portion 24 is closed. Further, the cover 26 is angularly displaced about the axis of the hinge portion 28 and is disposed to be inclined with respect to the upper surface of the cap, whereby the operation portion 24 is opened. The depth of the recess 34 is formed larger than the dimension of the cover 26 in the thickness direction. Thereby, the protrusion amount from the cap upper surface of the cover 26 can be suppressed.

  The open portion 36 is formed at a portion opposite to the hinge portion 28 with respect to the operation portion 24. In other words, the open portion 36 is formed on the knob portion 32 side with respect to the operation portion 24, and is formed on the side farther from the hinge portion 28 than the knob portion 32.

  The portion of the recess 34 that bulges most in the vehicle width direction is located behind the front end of the operation unit 24. In the present embodiment, the most bulging portion in the vehicle width direction is set at a position facing the center of the operation unit 24 from the vehicle width direction. As a result, rainwater accumulates in a region that bulges laterally with respect to the operation unit 24 with the vehicle body stopped in an inclined state. Therefore, even when rainwater accumulates, rainwater collected at the start of traveling flows behind the operation unit 24, and rainwater is prevented from traveling toward the operation unit 24.

  The width direction dimension of the intrusion prevention wall 38 is preferably formed larger than the width direction dimension of the operation portion 24. Thereby, it is possible to prevent rainwater that has passed between the intrusion prevention wall 38 and the side wall 34 a of the recess 34 from moving toward the operation unit 24. The recess 34 is formed to have a larger size in the width direction on the operation unit 24 side than the intrusion prevention wall 38. In other words, the recess 34 is formed at a portion rearward of the intrusion prevention wall 38 and has a width dimension larger than that of the front portion of the intrusion prevention wall 38. As a result, rainwater that has passed between the side wall 34a of the recess 34 and the intrusion prevention wall 38 is easily diffused behind the intrusion prevention wall 38, and the operation part 24 can be prevented from getting over. By forming the rear surface 38r of the intrusion prevention wall 38 in an arc shape, rainwater that has passed between the side wall 34a of the recess 34 and the intrusion prevention wall 38 wraps around the rear surface 38r side of the intrusion prevention wall 38, thereby preventing intrusion. It is easy to diffuse behind the wall 38, and it is possible to make it difficult to get over the operation unit 24.

  The guide surface 35 serving as the front surface 38f of the intrusion prevention wall 38 extends orthogonally to the bottom surface of the cap body 22, that is, along the vertical direction. This makes it easier to prevent the rainwater from getting over, as compared to the case where the guide surface 35 is inclined upward toward the rear. On the other hand, the rear surface 38r of the intrusion prevention wall 38 is inclined upward toward the front. As a result, even when rainwater accumulates behind the intrusion prevention wall 38, it becomes easy for rainwater to ride on the intrusion prevention wall 38 due to inertia during deceleration, and the accumulation of rainwater between the operation unit 24 and the intrusion prevention wall 38 is prevented. be able to. The rear surface 38 r of the intrusion prevention wall 38 is formed in a concentric arc shape with respect to the cylindrical shape of the peripheral wall 44. That is, the rear surface 38r of the intrusion prevention wall 38 is formed in an arc shape centered on the operation portion center 24a.

  The intrusion prevention wall 38 is a wall erected upward inside the cover 26 and extends in the vehicle width direction. Further, the intrusion prevention wall 38 is provided on the opposite side of the operating portion 24 from the hinge portion 38. The cap body 22 has a convex portion that protrudes in the circumferential direction like a petal. The base member 51 has a concave portion into which the convex portion is fitted. Since the angular displacement is prevented by the convex portion, the base member 51 and the cap body 22 do not come into contact with each other at the portion other than the convex portion, and the impression of the appearance that is greatly different from that of the circular cap main body is given. .

  The angular displacement (rotation) axis X1 of the cap body 22 and the angular displacement axis X2 of the cover 26 are parallel. These angular displacement axes X1 and X2 are arranged on the same side with respect to the operation unit 24, that is, rearward in the present embodiment.

  The knob portion 32 is disposed with a space in the vertical direction with respect to the upper surface of the cap body 22. Thereby, the nail | claw side of a fingertip can be arrange | positioned in the recess 34, and it can be made to dig into the knob part 32, and can make it easy to hook the knob part 32 on the skin side of a fingertip.

  Next, the operation of the tank cap 20 of this embodiment will be described. Although the tank cap 20 is closed when the motorcycle is running, it will be described with reference to FIG. 3 in an exposed state for convenience.

  When the motorcycle travels in the rain, rainwater W enters the recess 34 from the open portion 36. The rainwater W flows backward in the recess 34 from the open portion 36 and collides with the front surface 34 f of the intrusion prevention wall 38. The rainwater W that has collided with the front surface 34f of the intrusion prevention wall 38 is guided by the guide surface 35 and passes through the gap S1 between the intrusion prevention wall 38 and the side wall 34a of the recess 34.

  Since the recess 34 is a portion of the operation portion 24 behind the intrusion prevention wall 38 and has a larger size in the width direction, the rainwater that has passed through the clearance S1 between the intrusion prevention wall 38 and the side wall 34a of the recess 34 is provided. The flow velocity of the water drops behind the intrusion prevention wall 38. Therefore, intrusion of rainwater into the operation unit 24 can be suppressed.

  The rainwater W that has passed through the gap S1 passes through the gap S2 between the peripheral wall 44 and the side wall 34a of the recess 34. Since this gap S2 has a larger dimension in the width direction than the gap S1 between the infiltration prevention wall 38 and the side wall 34a of the recess 34, the flow of rainwater becomes gentle in the gap S2. Therefore, it is difficult for water to enter the key hole 25 over the peripheral wall 44.

  Rainwater W that has passed through the gap S2 flows through the recess 34 from the operation unit 24 toward the rear, and is discharged downward from the opening 50 at the rear end.

  According to the above configuration, the cover body 30 is housed in the recess 34 of the cap body 22 in the closed state of FIG. Moreover, since the cover main body 30 can be lifted by putting a finger from the front between the open portion 36 of the recess 34 of the cap main body 22 and the knob portion 32 of the cover main body 30 shown in FIG. It is.

  If the recess 34 having such an open portion 36 is provided, there is a concern that rainwater may enter the recess 34 from the open portion 36 and adversely affect the operation unit 24. Even when rainwater enters from the open portion 36 of 34, the rainwater W can be prevented from going directly to the operation unit 24 by the intrusion prevention wall 38 shown in FIG. 3. Therefore, the rainwater W can be prevented from adversely affecting the operation unit 24.

  In the above embodiment, since the open portion 36 shown in FIG. 3 is formed in front of the operation unit 24, rainwater tends to go to the operation unit 24 due to inertia during acceleration of the motorcycle, but enters the front of the operation unit 24. Since the suppression wall 38 is provided, it is possible to effectively prevent the rainwater W from entering the operation unit 24.

  The recess 34 is formed larger than the cover body 30 in the closed state in FIG. When the recess 34 is larger than the cover main body 30, rainwater easily collects in the recess 34, but the intrusion prevention wall 38 can prevent rainwater from entering the operation unit 24.

  The intrusion prevention wall 38 is formed at a position covered with the cover body 30 in the closed state in plan view. Thereby, since the intrusion prevention wall 38 is not exposed when the cover 26 is closed, the appearance is not impaired.

  The intrusion prevention wall 38 is formed so that its width direction dimension is smaller than the width direction dimension of the recess 34. As a result, the rainwater W blocked by the intrusion prevention wall 38 flows backward from the gap S1 between the ingress prevention wall 38 and the side wall 34a of the recess 34, so that the rainwater gets over the intrusion prevention wall 38 and enters the operation unit 24. Intrusion can be prevented.

  A guide surface 35 for guiding rainwater to the outside in the width direction of the recess 34 is formed on the front surface 38 f of the intrusion prevention wall 38. Thereby, since rainwater W flows along the guide surface 35, it is possible to prevent the rainwater W from entering the operation portion 24 over the intrusion prevention wall 38.

  Since the intrusion prevention wall 38 protrudes upward from the bottom surface of the recess 34, it is easy to block rainwater that travels toward the operation unit 24 along the bottom surface of the recess 34. As shown in FIG. 6, the upper surface 38 a of the intrusion prevention wall 38 is located above the lower surface 26 a of the front side portion of the intrusion prevention wall 38 in the closed cover body 30. Thereby, the cover main body 30 and the intrusion prevention wall 38 constitute a labyrinth structure and can prevent the rainwater W from entering the operation unit 24.

  The present invention is not limited to the above-described embodiment, and various additions, modifications, or deletions can be made without departing from the gist of the present invention. For example, the position of the hinge portion 28 is not limited to the rear of the cap body 22 and may be provided on the front or side. Further, the cover 26 is not limited to being angularly displaced about the vehicle width direction axis, and may be angularly displaced about the longitudinal axis, or may be slid in the horizontal direction.

  The guide surface 35 is not limited to an arc shape, and may be a linear shape. Further, the intrusion prevention wall 38 may be continuous with one or both side walls 34 a of the recess 34. Furthermore, in the above embodiment, the intrusion prevention wall 38 is provided on the cap body 22, but it may be provided on the cover body 30.

  The tank cap 20 of the present invention is suitably used for a motorcycle that is provided on the upper surface of the fuel tank 15 and exposed upward. However, the tank cap 20 of the present invention can also be applied to a straddle-type vehicle other than a motorcycle, for example, a three-wheeled vehicle, a four-wheel buggy, or the like. Therefore, such a thing is also included in the scope of the present invention.

15 Fuel tank 15a Refueling port 20 Tank cap 22 Cap body 24 Operation part 26 Cover 34 Recess 35 Guide surface 38 Intrusion prevention wall

Claims (9)

A tank cap that opens and closes a fuel filler port of a saddle type vehicle,
A cap body for closing the fuel filler port;
An operation unit provided on the cap body, wherein the locking operation of the cap body is performed;
A cover configured to be movable between a closed state for closing the operation part and an exposed state for exposing the operation part and supported by the cap body,
The cap body is formed with a recess in which the cover is housed in the closed state and is opened outward at an open portion.
In at least one of the cap body and the cover, intrusion suppression at a position between the open portion of the recess and the operation portion is smaller than the remaining portion in the distance between the cap body and the cover facing each other. A tank cap for a fuel tank of a saddle-ride type vehicle provided with a wall. The tank cap according to claim 1, wherein the open portion is formed in front of the vehicle body with respect to the operation portion.
A tank cap for a fuel tank of a saddle-ride type vehicle in which the intrusion prevention wall is located in front of the vehicle body with respect to the operation portion.   The tank cap according to claim 1 or 2, wherein the recess is formed larger in plan view than the cover in the closed state.   The tank cap according to claim 3, wherein the intrusion prevention wall is formed at a position covered with the cover in the closed state in plan view.   5. The tank cap according to claim 3, wherein the intrusion prevention wall is provided at a position opposed to the center of the operation portion from the radial direction in the closed state, and is formed to be smaller than a width direction dimension of the recess. The tank cap of the fuel tank of the saddle type vehicle.   6. The tank cap according to claim 1, wherein the intrusion suppression wall has rainwater flowing toward the operation portion on a surface opposite to the surface facing the operation portion. A tank cap for a fuel tank of a saddle-ride type vehicle in which a guide surface for guiding outward in the width direction is formed.   The tank cap of the fuel tank according to any one of claims 1 to 6, wherein the intrusion prevention wall protrudes upward from a bottom portion of the recess. The tank cap of the fuel tank according to claim 7, wherein the intrusion prevention wall is formed at a position covered with the cover in the closed state in plan view.
The tank cap of the fuel tank of the straddle-type vehicle, wherein the upper surface of the intrusion prevention wall is located above the lower surface of the portion opposite to the operation portion with respect to the intrusion prevention wall of the cover in the closed state .   A motorcycle comprising the tank cap of the fuel tank according to claim 2.

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