JP3758560B2 - Cap device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap device that is detachably attached to a tank opening.
[0002]
[Prior art]
  Conventionally, U.S. Pat. No. 4,830,058 is known as this type of cap device. That is, the fuel cap is provided with a gasket that closes the filler neck inlet, a lid that is attached to the upper portion of the casing and has an operation handle, and is interposed between the casing and the lid to provide rotational torque of the lid. Communicating state and not transmittingUnconnected stateAnd a coupling mechanism for switching between the two. The coupling mechanism includes an operation button exposed from the upper surface of the operation handle. By pressing the operation button, the connection mechanism is switched from the non-transmission state to the transmission state, and an operation of opening and closing the injection port with the fuel cap is performed. On the other hand, when the fuel cap is closed, the lid and the operation handle are in an idle state with respect to the casing, so that only the lid and the operation handle rotate when receiving an external force, and the casing is not rotated. This prevents the sealability from being impaired.
[0003]
[Problems to be solved by the invention]
However, when opening and closing the fuel cap, it is difficult to understand what operation should be performed, that is, it can be opened and closed by pressing an operation button, and there is a problem that operability is not good. In addition, when the operation button is provided on the operation handle, the operation handle itself is increased in size, and there is a problem that a large storage space is required around the fuel filler opening.
[0004]
An object of the present invention is to solve the above-described problems of the prior art, and to provide a cap device that maintains high sealing performance even when subjected to external force, has excellent operability, and requires a small storage space. To do.
[0005]
[Means for solving the problems and their functions and effects]
  The present invention made to solve the above problems
  In a cap device having a tank opening, a tank opening member having an opening side engaging portion provided in a peripheral portion of the tank opening, and a cap for closing the tank opening by engaging with the opening side engaging portion,
  A closing body that closes the tank opening at the closing position;
  Closed bodyTop ofIs mounted rotatablyA lid,For rotating the closing body in the direction to close or open the tank openingHaving an operation handleOperation means;
  LidAnd between the closed body andOperation handleA coupling mechanism for transmitting the rotational torque applied to the closed body,
  With
  The operation handle is supported by the lid so as to rotate with a support shaft as a fulcrum, and is raised to close the tank opening by being tilted and operating posture when the closing body is opened and closed. Take the storage posture of the time,When in the operating position than when in the stowed positionProtruding outward from the lid,
  The coupling mechanism is
  A torque plate that rotates integrally with the lid body and is interposed between the lid body and the closure body, is movable in the axial direction of the closure body, has a torque one-side engaging portion, and the closure body A main body side engaging portion provided,
  When the torque one side engaging portion is engaged with the main body side engaging portion, the rotational torque in the closing direction can be transmitted from the torque plate to the closing body, and the predetermined rotation or more in the closing direction can be transmitted. It becomes a connected state that engages and disengages with torque,
  When the torque one side engaging portion is disengaged from the main body side engaging portion, the torque plate becomes a non-connected state in which the rotational torque cannot be transmitted from the torque plate to the closing body,
  When the operation handle is in the operation posture, the connection state is established, and when the operation handle is in the storage posture, the non-connection state is established, and the lid body is in an idle state with respect to the closing body,
  Moving the torque plate in the axial direction to engage the torque one side engaging portion with the main body side engaging portion when the operating handle is shifted from the stowed posture to the operating posture;It is characterized by.
[0006]
  In the cap device according to the present invention, the operating meansOperation handleIf you rotate withOperation handleIs transmitted to the closing body through the connecting mechanism, and the closing body reaches the closing position where the closing body engages with the tank opening member to close the tank opening.
[0007]
  Operation handleIs in a connected state in which rotational torque can be transmitted. When the rotational torque is applied in this state, the closing body closes the tank opening. When the closing body closes the tank opening,Operation handleIs in the stowed position. In this stowed position, the rotational torque isUnconnected stateAndOperation handleBecomes idle with respect to the closed body. Therefore,Operation handleEven if it receives an external force due to a collision or the like, it does not rotate and does not transmit rotational torque to the closing body through the coupling mechanism, so that the sealing performance is not impaired.
[0008]
  When the cap is closed,Operation handleIs idle, so the userOperation handleCan be rotated to a desired position, so that the opening / closing operability is improved.
[0011]
  Preferred embodiment of the connecting mechanismAs the operation means, the operation handle isIt is possible to adopt a configuration including a cam that moves the torque plate so as to switch between a connected state and a non-connected state in accordance with the transition between the operation posture and the storage posture.
[0012]
Further, the operation means can be configured to include a spring that urges the operation handle to move to the storage position when the operation handle is released from the operation position. Thereby, the operation handle can be reliably shifted to the storage posture. As a preferred aspect of the spring, it is formed by a cantilever piece integrally protruding from the torque plate, and one end of the cantilever piece is configured to be urged by pressing against the casing body, or the upper part of the casing body It is formed by a cantilever piece projecting integrally from the end, and one end of the cantilever piece can be configured to be urged by pressing against the torque plate. Thus, the number of parts is not increased by forming the spring integrally with the torque plate and the casing.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below.
[0014]
(1) Schematic configuration of the fuel cap 10
1 and 2 are cross-sectional views showing a cap device provided with a fuel cap 10 (cap) according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing a state in which an injection port is closed by the fuel cap 10. 2 is a cross-sectional view taken along line 2-2 of FIG. 1 and 2, a fuel cap 10 is attached to a filler neck FN having an inlet FNb (tank opening) for replenishing a fuel tank (not shown), and is made of a synthetic resin material such as polyacetal. The casing body 20 (closed body), the inner lid 30 that closes the upper opening of the casing body 20 to form the valve chamber 24, the pressure regulating valve 35 housed in the valve chamber 24, and the upper portion of the casing body 20 are mounted. A lid 40 formed of a synthetic resin material such as nylon; a protector 45 attached to the outer wall of the lid 40; an operation handle 50 attached to the upper surface of the lid 40; and a torque mechanism 80 (coupling mechanism). And a gasket GS that is mounted on the outer periphery of the upper portion of the casing body 20 and seals between the casing body 20 and the filler neck FN.
[0015]
In the structure of the fuel cap 10, the injection handle FNb can be opened and closed by inserting and removing the fuel cap 10 from the filler neck FN while holding the operation handle 50 with a finger and causing it to rotate.
[0016]
(2) Configuration of each part
Next, the configuration of each part of the fuel cap 10 according to the present embodiment will be described in detail.
[0017]
(2) -1 Casing body 20
The casing body 20 includes a substantially cylindrical outer tube body 21 and a valve chamber forming body 22 provided integrally inside the outer tube body 21. The valve chamber forming body 22 houses a positive pressure valve and a negative pressure valve that act as the pressure regulating valve 35. The inner lid 30 forms the valve chamber 24 by being welded to the upper portion of the valve chamber forming body 22 using an ultrasonic welding method.
[0018]
A gasket GS is sheathed on the lower surface of the upper flange 21b of the casing body 20. That is, the gasket GS is interposed between the seal holding portion 21a of the flange 21b and the inlet FNb of the filler neck FN, and when the fuel cap 10 is tightened into the inlet FNb, the gasket GS is against the seat surface of the filler neck FN. Pressed to perform a sealing action.
[0019]
FIG. 3 is an explanatory view for explaining the relationship between the casing side engaging portion 20a of the casing body 20 and the filler neck FN. A casing-side engagement portion 20 a is formed at the lower outer periphery of the outer tube body 21. On the other hand, the opening side engaging part FNc is formed in the inner peripheral part of the filler neck FN. A neck-side insertion notch FNd capable of inserting the casing-side engagement portion 20a of the fuel cap 10 in the axial direction is formed on a part of the inner peripheral side of the opening-side engagement portion FNc. Therefore, when the fuel cap 10 is rotated by a predetermined angle (about 90 °) with the casing side engaging portion 20a aligned with the neck side insertion notch FNd and the fuel cap 10 inserted into the filler neck FN, the casing The fuel cap 10 is attached to the filler neck FN by engaging the side engaging portion 20a with the opening side engaging portion FNc.
[0020]
As shown in FIG. 1, a flange 32 is formed on the outer peripheral side of the inner lid 30. The flange 32 extends to the outside from the flange 21b of the outer tubular body 21, and a lid 40 is attached as will be described later.
[0021]
(2) -2 Configuration of lid 40
In FIG. 1, the lid body 40 is rotatably and detachably attached to the flange 32 of the inner lid 30. The lid 40 includes an upper wall 41 and a side wall 43 formed on the outer periphery of the upper wall 41, and is integrally formed by injection using a conductive resin. Further, a support protrusion 43 a is provided on the inner side of the side wall 43. The support protrusions 43a are provided at eight positions (two positions are shown in FIG. 2) at regular intervals along the circumferential direction of the side wall 43. The lid 40 is assembled to the casing body 20 via the inner lid 30 by the support protrusion 43 a engaging the flange 32 of the inner lid 30. On the outer peripheral portion of the upper wall 41, shaft support portions 44 and 44 for supporting the operation handle 50 are projected, and the central portion of the torque plate 90 is penetrated and stopped at the central portion. For this purpose, a fitting hole 41a is formed.
[0022]
(2) -3 Protector 45
The protector 45 is a cylindrical member that is attached to the outer periphery of the lid body 40 and protects the upper portion of the fuel cap 10 from external force. At the lower end of the protector 45, eight engaging claws 45a in the circumferential direction are formed by being divided by slits. The protector 45 is attached to the lid body 40 by engaging the engaging claws 45 a with the annular claws 43 b protruding from the side wall 43 of the lid body 40. A tether 46 is rotatably mounted on the protector 45. The other end of the tether 46 is fixed to a fueling lid (not shown) to prevent the fuel cap 10 from being lost when the fuel cap 10 is removed.
[0023]
(2) -4 Configuration of operation handle 50
FIG. 4 is an exploded perspective view showing the upper part of the fuel cap 10. The operation handle 50 includes a handle main body 51 and a spring 56. The handle main body 51 is formed in a semicircular shape having an operation recess 51a in which an outer peripheral central portion is recessed. The operation recess 51a is a recess for inserting a finger so that the operation handle 50 can be easily operated. Support shafts 52, 52 protrude from both sides of the handle body 51. The support shafts 52, 52 are rotatably supported in the shaft holes 44 a of the shaft support portion 44 of the lid body 40.
[0024]
The spring 56 is packaged on one support shaft 52. One end of the spring 56 is engaged with the locking portion 51 b of the operation handle 50, and the other end is engaged with the locking portion 41 b of the lid body 40. The operation handle 50 is attached to the lid 40 so as to take a storage posture in which the handle main body 51 is pressed against the upper wall 41 by an urging force of the spring 56 and an operation posture caused against the force of the spring 56. Has been. With this configuration, by inserting a finger into the operation recess 51 a and causing the operation handle 50, the operation handle 50 rotates around the support shafts 52 and 52.
[0025]
A cam 53 is formed at the center lower portion of the handle main body 51. The cam 53 includes a cam surface 53 a that presses the torque plate 90. The cam surface 53a is formed so as to push the torque plate 90 when the operation handle 50 is in the operation posture and not to push the torque plate 90 when it is in the storage posture.
[0026]
(2) -5 Configuration of torque mechanism 80
The torque mechanism 80 gives a feeling of moderation when the operating handle 50 is given a rotational torque of a predetermined level or more during the operation of closing the inlet FNb with the fuel cap 10, and the fuel cap 10 has a filler neck with a predetermined rotational torque. It is a mechanism that can confirm that the FN is mounted.
[0027]
FIG. 5 is an explanatory view showing the torque mechanism 80 from above, and FIGS. 6 to 8 are perspective views showing main portions of the main body side engaging portion 34 and the torque plate 90. The torque mechanism 80 includes a main body side engaging portion 34 formed on the inner lid 30 and a torque plate 90. In FIG. 5, the main body side engaging portions 34 are protrusions for engaging with the torque plate 90, and are arranged along the inner cylinder wall 33 of the inner lid 30 with the same shape and at equal intervals on the entire circumference. As shown in FIG. 6, it is surrounded by a first engagement surface 34a, a second engagement surface 34b, a guide slope 34c, and a guide slope 34d. The first engagement surface 34a is formed on a vertically inclined and slightly vertical surface, and the second engagement surface 34b is formed on a vertical surface directed in the radial direction. The guide slopes 34c and 34d are surfaces inclined in the circumferential direction and downward with the center as a peak.
[0028]
FIG. 9 is a perspective view showing the torque plate 90. In FIG. 9, a torque plate 90 is a thin disk made of resin and having a central convex portion and an engaging portion. That is, a cup-shaped central protrusion 91 is formed at the center of the torque plate 90, and elastic torque pieces 94, 94 are formed on the outer periphery and concentrically with the grooves 93, 93 therebetween. A spring piece 96 is formed on the surface.
The central protrusion 91 is fitted through the fitting hole 41a (see FIG. 4) of the lid body 40 so as to be able to move up and down and is prevented from rotating, whereby the torque plate 90 is integrated with the lid body 40. It is configured to rotate. Further, the upper surface 91a of the central protrusion 91 is a pressing surface 91a that is pressed against the cam surface 53a (see FIG. 4) of the operation handle 50.
[0029]
The elastic torque pieces 94, 94 are formed in an arch-like cantilever with the support end 94 a as a fulcrum, and a torque piece side engagement portion 95 is provided on the outer peripheral side, and the inner periphery of the torque piece side engagement portion 95 is formed. A long hole 94b is formed on the side. One side of the torque one side engaging portion 95 is formed on the first engaging surface 95a, the other surface is formed on the second engaging surface 95b, and a guide slope 95c is formed on the corner of the lower surface. As shown in FIG. 6, the first engagement surface 95 a is formed so as to contact the first engagement surface 34 a of the main body side engagement portion 34 with a surface perpendicular to the clockwise rotation of the torque plate 90. When the side engagement portion 34 is pressed in the radial direction from the center, the torque piece side engagement portion 95 is elastically deformed so as to narrow the elongated hole 94b as shown in FIG. On the other hand, as shown in FIG. 8, the second engagement surface 95 b is formed so as to contact the second engagement surface 34 b of the main body side engagement portion 34 with a surface inclined with respect to the counterclockwise rotation, The torque plate 90 and the casing body 20 are engaged so as to rotate together.
[0030]
Returning to FIG. 9, spring pieces 96 are formed on the outer periphery of the torque plate 90. The spring piece 96 includes a base portion 96a extending outward in the radial direction, and elastic pieces 96b and 96b extending from the base portion 96a in a cantilever shape on both sides in the circumferential direction and formed downward. The elastic plates 96b, 96b are formed so as to urge the torque plate 90 upward by a reaction force when the tips of the elastic pieces 96b, 96b are pressed against the upper surface 31a of the inner lid 30.
[0031]
(3) Opening and closing operation of the fuel cap 10
Next, an opening / closing operation when an operation of opening / closing the inlet FNb of the filler neck FN with the fuel cap 10 is performed will be described.
[0032]
(3) -1 Closing operation of the fuel cap 10
As shown in FIG. 10, when the operation handle 50 is gripped with a finger while the inlet FNb is opened, the operation handle 50 is centered on the support shafts 52 and 52 against the biasing force of the spring 56. To turn. By the rotation of the operation handle 50, the cam surface 53a presses the pressing surface 91a of the torque plate 90. The torque plate 90 is pushed downward against the spring force of the spring piece 96, and is set at an engagement position where the torque piece side engaging portion 95 of the elastic torque piece 94 engages with the main body side engaging portion 34. At this time, as shown in FIG. 12, even if the main body side engaging portion 34 is just below the torque one side engaging portion 95, the guide inclined surface 95 c slides on the guide inclined surfaces 34 c and 34 d of the main body side engaging portion 34. The torque plate 90 moves smoothly to the engagement position.
[0033]
Subsequently, as shown in FIG. 3, the casing side engaging portion 20a of the casing body 20 is aligned with the neck side insertion notch FNd of the filler neck FN and inserted in the axial direction (state of FIG. 11). Then, a clockwise force is applied to the operation handle 50 to rotate the fuel cap 10. The rotational force of the operation handle 50 is transmitted to the torque plate 90 through the support shafts 52 and 52, the lid 40, the fitting hole 41a of the lid 40 and the shaft fitting portion 91b of the torque plate 90, and is rotated.
[0034]
With the rotation of the torque plate 90, the torque one side engaging portion 95 of the torque plate 90 pushes the main body side engaging portion 34 of the casing main body 20 at the engaging position in FIG. 5. As a result, the lid 40, the torque plate 90, and the casing body 20 rotate together to advance in the direction of closing the injection port FNb, and the casing side engaging portion 20a (see FIG. 3) is engaged with the opening side engaging portion FNc. The power to combine increases. When the reaction force generated by the engaging force becomes equal to or greater than the predetermined rotational torque, the torque piece side engaging portion 95 gets over the main body side engaging portion 34 as shown in FIG. 14 through the state of FIG.
[0035]
At this time, as shown in FIG. 13, the first engagement surface 95a of the torque piece side engagement portion 95 is pressed in the radial direction by the reaction force from the first engagement surface 34a, so that the elastic torque piece 94 has a long hole 94b. The torque one side engaging part 95 gets over the main body side engaging part 34 by elastically deforming so as to change the width. Thereby, the user can confirm a feeling of moderation. In this state, the fuel cap 10 is closed to the inlet FNb with a predetermined tightening torque.
[0036]
When the finger is released from the operation handle 50, the operation handle 50 is rotated around the support shafts 52 and 52 by the spring force of the spring 56 and returned to the storage position as shown in FIG. Since the force pressed by the operation handle 50 is released, the torque plate 90 moves upward by the spring force of the spring piece 96. Thereby, the torque one side engaging part 95 is engaged / disengaged from the main body side engaging part 34 and the engaging position is released. In this state, the operation handle 50, the lid body 40, and the torque plate 90 are not restricted by the casing body 20 and can be idled.
[0037]
That is, the torque plate 90 is moved upward away from the main body side engaging portion 34, that is, the torque one side engaging portion 95 is at a position disengaged from the main body side engaging portion 34. Release the integrated connection. As a result, the lid 40 and the operation handle 50 are idle with respect to the casing body 20. Therefore, even if the lid 40 or the operation handle 50 receives an external force due to a collision or the like, the cover 40 rotates idly and the rotational torque is not transmitted to the casing body 20 through the torque mechanism 80, so that the sealing performance is not impaired.
[0038]
(3) -2 Opening operation of the fuel cap 10
On the other hand, in order to open the fuel cap 10, the operation handle 50 is picked up with a finger and caused. Thereby, the cam surface 53a at the lower center of the operation handle 50 presses the pressing surface 91a of the torque plate 90, and the torque plate 90 moves downward. In this state, when the operation handle 50 is rotated counterclockwise, the second engagement surface 95b of the torque one side engagement portion 95 is changed to the second engagement surface 34b of the main body side engagement portion 34 as shown in FIG. Engage. The second engagement surface 95b and the second engagement surface 34b are substantially in the radial direction and do not generate a force in the center direction that narrows the gap between the elongated holes 94b. The rotational force applied to the operation handle 50 is transmitted via the casing body 20 without getting over the body side engaging portion 34. As a result, the operation handle 50, the lid body 40, the torque plate 90, and the casing body 20 are integrally rotated counterclockwise.
[0039]
And the casing side engaging part 20a remove | deviates from the opening side engaging part FNc of the filler neck FN, and the casing main body 20 is released from the restraining force with respect to the filler neck FN. The fuel cap 10 can be removed from the filler neck FN by pulling out the lid 40 in the axial direction.
[0040]
(4) Function and effect of fuel cap 10
(4) -1 In the process of closing the fuel cap 10, when the torque one side engaging portion 95 of the torque plate 90 gets over the main body side engaging portion 34 of the casing body 20, as shown in FIGS. The feeling can be confirmed and it can be seen that the fuel cap 10 is tightened with a predetermined torque, so that it can be tightened with a constant torque regardless of the elasticity of the gasket GS or the like.
[0041]
(4) -2 As shown in FIG. 1, when the fuel cap 10 closes the inlet FNb, the torque plate 90 is not interlocked with the casing body 20 due to the urging force of the spring piece 96 of the torque plate 90. Therefore, even when the operation handle 50 receives a force in the rotation direction due to an unexpected external force, the operation handle 50 rotates idly with respect to the casing body 20. Therefore, the casing body 20 can maintain the state where the inlet FNb is closed without receiving the external force applied to the operation handle 50 as a rotational force. Therefore, the fuel cap 10 can maintain a seal without being loosened even if an unexpected external force is applied.
[0042]
(4) -3 As shown in FIG. 2, in a state where the fuel cap 10 is mounted on the filler neck FN, the operation handle 50 is placed in the storage position by the force of the spring 56, and from the standing operation position at the time of opening and closing. Since it is returned, it is difficult to receive an external force at the time of a vehicle collision or the like, and a force that loosens the fuel cap 10 is not applied. In addition, even if the operation handle 50 is enlarged, the storage position of the lid 40 is tilted to the upper wall 41 in the storage posture, so that the storage space around the filler opening can be reduced.
[0043]
(4) -4 As shown in FIG. 5, the main body side engaging portions 34 of the torque mechanism 80 are formed at equal intervals over the entire circumference of the inner lid 30, so that the position of the operation handle 50 is not changed. Rotational torque can be immediately transmitted to the casing body 20, and uniform rotational torque can be transmitted regardless of the position of the torque one side engaging portion 95.
[0044]
(4) -5 In the closed state of the fuel cap 10, the operation handle 50 is in an idle state, and the user can rotate the operation handle 50 to a desired position, so that the opening / closing operability is improved.
[0045]
(4) -6 As shown in FIG. 1, since the operation handle 50 can visually recognize the state where the fuel cap 10 is in the closed position when the fuel cap 10 is closed, it can be easily understood that the opening / closing operation can be performed if this occurs. The operability is superior to the button operation configuration described in the technology.
[0046]
(4) -7 As shown in FIG. 9, the torque plate 90 is supported in line contact with the upper surface 31 a of the inner lid 30 at the tip of the spring piece 96. It can be rotated smoothly without hindering rotation.
[0047]
FIG. 15 is an exploded perspective view showing a modification of the torque mechanism 80B. The central projection 91B of the torque plate 90B is cylindrical and penetrates the through hole 41Ba of the lid 40B. On the other hand, four locking pieces 41Bc are formed downward on the lower surface of the upper wall 41B of the lid 40B. By inserting the locking piece 41Bc into the groove 93B of the torque plate 90B, the lid body 40B and the torque plate 90B are assembled so as to rotate integrally. According to this configuration, since the central protrusion 91B is a cylinder, it is easy to attach a packing to the outer periphery of the central protrusion 91B, and this packing prevents rainwater from entering the lid body 40B through the through hole 41Ba. be able to.
[0048]
FIG. 16 is a plan view showing a modification of the torque plate 90C. A disk 91Cb is formed on the outer periphery of the central projection 91C of the torque plate 90C, and elastic torque pieces 94C and 94C are formed from one end of the outer periphery of the disk 91Cb. The elastic torque pieces 94C, 94C have torque piece side engaging portions 95C, are formed in an arch-like cantilever with the support end portion 94Ca as a fulcrum, and the free end side is a leg portion 94Cb. A gap 94Cd is formed between the leg portion 94Cb and the disk 91Cb.
With this configuration, when the torque plate 90C rotates in the clockwise direction, the torque piece side engaging portion 95C is pushed by the main body side engaging portion 34 and the elastic torque pieces 94C and 94C bend in the direction of contracting the gap 94Cd. Get over the engaging portion 34. On the other hand, when the torque plate 90C rotates counterclockwise, it bends in the direction of widening the gap 94Cd, so that the torque piece side engaging portion 95C engages with the main body side engaging portion 34 and rotates together.
[0049]
The present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.
[0050]
(1) In the above embodiment, the spring that disengages the torque plate 90 is integrally formed with the torque plate 90 by the spring piece 96. However, the present invention is not limited to this configuration. Various means such as a coil spring can be used as long as the structure is urged between the two, and they may be formed separately or separately.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a cap device provided with a fuel cap 10 according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.
FIG. 3 is an explanatory diagram for explaining a relationship between a casing side engaging portion 20a of the casing body 20 and a filler neck FN.
4 is an exploded perspective view showing components at the top of the fuel cap 10. FIG.
FIG. 5 is an explanatory view showing the torque mechanism 80 from above.
6 is an explanatory diagram for explaining a relationship between a torque one side engaging portion 95 and a main body side engaging portion 34 of the torque plate 90. FIG.
FIG. 7 is an explanatory diagram for explaining the operation of the torque mechanism.
FIG. 8 is an explanatory diagram for explaining the operation of the torque mechanism.
9 is a perspective view showing a torque plate 90. FIG.
FIG. 10 is an explanatory diagram for explaining the operation of opening the fuel cap 10;
FIG. 11 is an explanatory diagram for explaining the operation of opening the fuel cap 10;
FIG. 12 is an explanatory diagram for explaining an operation in which a torque plate shifts to an engaged state.
FIG. 13 is an explanatory diagram for explaining the operation of the torque mechanism in the closing direction.
FIG. 14 is an explanatory view for explaining the operation of the torque mechanism in the opening direction.
FIG. 15 is an exploded perspective view showing a modified example of the torque mechanism 80B.
FIG. 16 is a plan view showing a modification of the torque plate 90C.
[Explanation of symbols]
10. Fuel cap
20 ... Casing body
20a ... casing side engaging part
21 ... Outer tube
21a ... Seal holder
21b ... Flange
22 ... Valve chamber forming body
24 ... Valve
30 ... Inner lid
31a ... Upper surface
32 ... Flange
33 ... Inner cylinder wall
34 ... Main body side engaging part
34a ... first engaging surface
34b ... second engagement surface
34c ... Guide slope
34d ... Guide slope
35 ... Pressure control valve
40 ... Lid
40B ... Lid
41 ... Upper wall
41B ... Upper wall
41a ... Fitting hole
41b ... Locking part
41Ba ... through hole
41Bc ... locking piece
43 ... sidewall
43a ... Supporting protrusion
43b ... Ring claw
44 ... Shaft support
44a ... shaft hole
45 ... Protector
45a ... engaging claw
46 ... Tether
50 ... Operation handle
51 ... handle body
51a ... recess for operation
51b ... Locking part
52 ... Support shaft
53 ... Cam
53a ... cam surface
56 ... Spring
80 ... Torque mechanism
80B ... Torque mechanism
90 ... Torque plate
90B ... Torque plate
90C ... Torque plate
91 ... Center protrusion
91B ... Central protrusion
91C ... Central protrusion
91Cb ... disc
91a ... Pressing surface
91b ... Shaft fitting part
93 ... groove
93B ... Groove
94 ... elastic torque piece
94C ... elastic torque piece
94a ... support end
94b ... slot
94Ca ... Support end
94Cb ... Leg
94Cd ... Gap
95 ... Torque one side engaging part
95C ... Torque one side engaging part
95a ... first engaging surface
95b ... second engaging surface
95c ... Guide slope
96 ... Spring piece
96a ... Base
96b ... elastic piece
FN ... Filler neck
FNb ... Inlet
FNc ... Opening side engaging part
FNd ... Neck side insertion notch
GS ... Gasket

Claims (6)

A tank opening, a tank opening member having an opening side engaging portion (FNc) provided in a peripheral portion of the tank opening, and a cap that closes the tank opening by engaging with the opening side engaging portion (FNc). Having a cap device,
A closing body that closes the tank opening at the closing position;
An operating means having a lid (40) rotatably mounted on the upper part of the closing body, and an operation handle (50) for rotating the closing body in a direction to close or open the tank opening;
A coupling mechanism that is interposed between the lid (40) and the closing body and transmits the rotational torque applied to the operation handle (50) to the closing body;
With
The operation handle (50) is supported by the lid (40) so as to rotate about the support shaft (52), and is raised to operate and tilt when the closing body is opened and closed. The storage position when the tank opening is closed is taken, and when it is in the operation position, it protrudes outward from the lid (40) than when it is in the storage position .
The coupling mechanism is
The lid (40) rotates integrally with the lid (40) and is interposed between the lid (40) and the closing body, and is movable in the axial direction of the closing body. A torque plate (90) having a main body side engaging portion (34) provided on the closing body,
The torque piece side engaging portion (95) engages with the main body side engaging portion (34), so that rotational torque in the closing direction can be transmitted from the torque plate (90) to the closing body. And it will be in the connected state where it will be engaged and disengaged with a predetermined or higher rotational torque in the closing direction
The torque piece side engaging portion (95) is disengaged from the main body side engaging portion (34), so that rotational torque cannot be transmitted from the torque plate (90) to the closing body. State
When the operation handle (50) is in the operation posture, the connection state is established. When the operation handle (50) is in the storage posture, the connection state is not established, and the lid (40) is closed. Against the idle state,
When the operation handle (50) shifts from the stowed position to the operation position, the torque plate (90) is moved in the axial direction so that the torque one side engaging portion (95) is engaged with the main body side. Engaging the part (34);
Cap device characterized by. The cap device of claim 1 ,
The cap device includes a spring that biases the operation handle so as to move to the retracted position when the operation handle is released from the operation position. The cap device according to claim 1 or 2 ,
The said operation means is a cap apparatus provided with the cam which moves the said operation handle so that a torque plate may be switched to a connection state and a non-connection state with the transition of an operation attitude | position and a storage attitude | position. The cap device according to claim 3 , wherein
A cap device provided with a spring that urges the torque plate and the closing body in a direction in which the torque plate and the closing body are disconnected . The fuel cap of claim 4 ,
The fuel cap is formed of a cantilever piece integrally projecting from the torque plate, and is configured to be biased by pressing one end of the cantilever piece against the closing body. The fuel cap of claim 4 ,
The fuel cap is formed of a cantilever piece integrally projecting from the upper part of the closing body, and is configured to be urged by pressing one end of the cantilever piece against the torque plate.

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