JP2009001231A - Opening/closing device for oil-feeding port - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate concern with liquid leakage by simplifying lid opening/closing operation as much as possible and more certainly closing an oil-feeding port in oil-feeding work. <P>SOLUTION: The opening/closing device 1 for the oil-feeding port is provided with: a turning type outer lid 2 for opening/closing a recession part (b) on a vehicle body side; an oil-feeding port (10) provided in the state exposed to the inside of the recession part (b) and communicated with a fuel tank; and an inner lid 3 for allowing insertion of an oil-feeding nozzle (e) relative to the oil-feeding port accompanying with turning to an inner side and turned from the opened state to the closure direction by biasing force when the oil-feeding nozzle 4 is drawn out. The opening/closing device 1 has a locking means 5 for non-turnably locking the inner lid 3 interlockingly with closing action of the outer lid 2 and releasing the locking interlockingly with opening action of the outer lid 2 to allow turning of the inner lid 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an opening / closing device for a fuel filler port that fills fuel oil into a fuel tank of an automobile or the like.

  FIG. 12 shows a structural example for opening and closing the fuel filler opening disclosed in Patent Document 1. In this structure, a cap (screw-type cap called a filler cap) 11 that closes the fuel filler opening of the fuel tank is improved, and a hole 21 into which the fuel nozzle 19 can be inserted is formed in the ceiling portion 15. A valve-type inner lid 23 that closes the hole 21 is provided on the lower surface side of the portion 15 so as to be swingable inward via a hinge portion 25, and a spring member 27 that presses the inner lid 23 against the lower surface of the ceiling portion 15 is provided. In addition, an outer lid 31 that closes the hole 21 is provided on the upper surface side of the ceiling portion 15 so as to be openable and closable outside. In addition, the above oil filler 13 is exposed in the inner bottom side of the recessed part which is provided in a vehicle panel and is opened and closed with a lid (equivalent to the outer lid of this invention) as illustrated in FIG. 11 to which the present invention is applied. Yes.

Accordingly, in the refueling operation, first, the lid lock is unlocked by remote control or the like. Then, the lid is slightly rotated in the opening direction with the hinge portion as a fulcrum by the push-up mechanism, so that the lid is opened using a gap formed between the lid and the recess. Next, after opening the outer lid 31 to the outside, the inner lid 23 is pushed inward by the oil filler nozzle 19 to make it open, and fuel is supplied in that state. After the refueling is completed, when the refueling nozzle 19 is pulled out, the inner lid 23 is pressed against the lower surface of the ceiling portion 15 by the urging force of the spring member 27 to be in a closed state. After the outer lid 31 is closed, the lid (not shown) is closed. As the above-mentioned advantages, refueling can be performed without removing the cap 11 from the refueling port 13, so that the refueling work is simplified, and there is no shortage of tightening or forgetting to tighten the cap 11 after refueling. It is described that it can be prevented.
JP-A-8-216705

  In the above conventional structure, although the cap 11 is not attached or detached, if the cap 11 has the outer lid 31, the outer lid must be opened and closed, and the outer lid 31 is locked to the cap 11. Means are also indispensable, and depending on the locking means, the opening and closing operation is further complicated. Further, since the inner lid 23 is only kept in the closed state by the urging force, it is easy to swing when receiving an external load such as an impact. For this reason, although the outer lid 31 may be omitted, it is indispensable if the outer lid 31 is omitted.

  The object of the present invention is to solve the problems as described above, simplify the lid opening / closing operation as much as possible in the refueling operation, close the refueling port more securely, and eliminate the risk of liquid leakage, thereby improving convenience. It is to improve safety and reliability.

  In order to achieve the above object, the invention of claim 1 is taken from the configuration in which the inner lid is locked in the closed state. A lid 2, a fuel filler port (11) leading to a fuel tank provided in an exposed state in the recess, and allowing the fuel filler nozzle e to be inserted into the fuel filler port with inward rotation, In addition, in the opening / closing device 1 for a filler opening provided with an inner lid 3 that is rotated from an open state to a closing direction by an urging force when the fuel nozzle is pulled out, the inner lid is interlocked with the closing operation of the outer lid 2. 3 has a lock means 5 that locks 3 so as not to rotate and releases the lock in conjunction with the opening operation of the outer lid 2 to allow the inner lid 3 to rotate. It is said.

  Further, the invention of claim 2 is taken from the configuration that improves the sealing degree of the inner lid. When specified by an example of the form, the rotary outer lid 2 that opens and closes the recess b on the vehicle body side, and the recess A fuel supply port (11) communicating with a fuel tank provided in an exposed state, and allowing the fuel supply nozzle e to be inserted into the fuel supply port with rotation inward, and pulling out the fuel supply nozzle. In the opening / closing device 1 for the fuel filler provided with the inner lid 3 that is rotated in the closing direction from the open state by the biasing force, the frame member 10 that partitions the fuel filler, the inner lid 3 and the frame The sealing gasket 25 interposed between the member 10 and the inner lid 3 are held in pressure contact with the gasket 25 in conjunction with the closing operation of the outer lid 2 and the opening operation of the outer lid 2 is performed. And press-contact holding means 6 for releasing the holding of the inner lid 3 in conjunction with And wherein the Rukoto.

  In each of the above inventions, the concave portion is a portion that is provided integrally with the vehicle body surface or the vehicle body panel and in which the fuel filler opening is disposed. The fuel filler port is a portion that communicates with the fuel tank via a fuel filler pipe or the like, and is usually partitioned by a frame member or the like. The outer lid may be a lid that rotates and opens and closes. Further, the locking means 5 and the pressure contact holding means 6 differ depending on whether the frame member and the gasket are essential as well as the operation, but are involved when the inner lid 3 is locked or held in pressure contact or switched to the open state. Similar in that it releases the stop release or press-contact holding. That is, in the locking means 5 of the first aspect, it may be simply engaged / disengaged (for example, engagement / disengagement of the guide groove 18 and the projection 33 of the fourth aspect), whereas in the press-contact holding means 6 of the second aspect, In addition to the engagement / disengagement, the inner lid 3 is in pressure contact with or released from the gasket (for example, via a protrusion 33 guided back and forth along the guide groove 18).

Each of the above inventions is more preferably embodied as follows. That is,
(A) The lock means 5 of claim 1 or the press-contact holding means 6 of claim 2 is substantially ring-shaped, and is rotatably disposed outside the oil filler port so that the inner lid 3 is ring-shaped. The rotating body 16 is exposed from the hole, and the rotating body 16 and the inner lid 3 can be engaged and disengaged in conjunction with opening and closing of the outer lid 2 (Claim 3).
(A) Protrusions 33 provided on one of the inner lid 3 and the rotary body 16 and guide grooves 18 provided on the other side for guiding the inner lid from the rear end side of the rotary body to the front end side. In addition, when the rotating body 16 is rotated in conjunction with opening and closing of the outer lid 2, the guide groove 18 can be engaged with and disengaged from the protrusion 33 (Claim 4).
(C) The inner lid 3 is attached to a support body 35 that is swingably held and urged in a closing direction, and can be separated from the support body (can be separated by a predetermined distance). It is comprised from the cover body 30 (Claim 5).
(D) It is configured to have a rotating mechanism 4 that is interposed between the rotating body 16 and the outer lid 2 and rotates the rotating body 16 in conjunction with opening and closing of the outer lid 2 ( Claim 6).

  According to the first aspect of the present invention, as the refueling operation procedure, after the outer lid is opened, the inner lid is pushed inward by the refueling nozzle, and refueling is performed while the refueling nozzle is inserted into the refueling port. After the end of refueling, when the outer cover is switched from the open state to the closed state after the oil supply nozzle is pulled out from the oil supply port, the inner cover is locked so as not to rotate. That is, in the opening and closing device of the present invention, the inner lid is interlocked with the opening operation of the outer lid by the locking means while adopting a so-called valve type in which the inner lid rotates to the inside of the fuel filler opening to be opened. The oil supply operability, which is an advantage of the valve type, can be maintained satisfactorily at the same time, and at the same time, the inner lid is locked so as not to rotate in conjunction with the closing operation of the outer lid. Even if it is received, it is possible to reliably eliminate the possibility of causing liquid leakage.

  In the invention of claim 2, the inner lid is displaced by the press-contact holding means in the direction of press-contact with the gasket in conjunction with the closing operation of the outer lid, and is maintained in the state after the displacement. That is, in the opening / closing apparatus of the present invention, while adopting a so-called valve type in which the inner lid is rotated to the inside of the fuel filler opening to be in an open state, the inner lid is pressed against the gasket in a closed state by the press contact holding means, and the In order to maintain the pressure contact mode, it is possible to improve the sealing performance of the inner lid and eliminate the possibility of causing liquid leakage.

  In the invention of claim 3, since the locking means or the press-contact holding means has a rotating body, the rotating body and the inner lid can be engaged and disengaged in conjunction with opening and closing of the outer lid. 7 can be adopted, and can be implemented with a simple configuration as in the embodiment. In this case, according to the invention of claim 4, the lock means and the press-contact holding means can be easily implemented so that the guide groove is engaged with and disengaged from the protrusion by rotating the rotating body in conjunction with opening and closing of the outer lid. To do.

  In the invention of claim 5, since the inner lid is composed of a support body biased in the closing direction in a pivotal state and a cover body that is detachably attached to the support body, The gasket is abutted in a closed state with the inner lid, etc., in an optimal posture, that is, the inner lid can be brought into uniform contact with the entire seal surface, thereby improving the degree of sealing. Moreover, it becomes suitable also for implementation of a locking means and a press-contact holding means like a form example.

  In the invention of claim 6, the rotating body of claim 3 is rotated in conjunction with the opening and closing of the outer lid via the rotating mechanism, and thereby the engagement and disengagement with respect to the inner lid of claim 3 utilizing the rotation of the rotating body. Further, the engagement and disengagement of the guide groove with respect to the protrusion of claim 4 can be easily implemented.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In this description, after clarifying the structure of the opening / closing device for the fuel filler opening, the advantages thereof are mentioned together with the fueling work. In each drawing, a part is omitted or simplified for easy understanding.

(Apparatus Structure) The target opening / closing device 1 for the fuel filler opening is provided in the recess b, as shown in FIGS. 1 and 11, with a rotating outer lid 2 that opens and closes the recess b on the vehicle body side. A frame member 10 that defines a fuel filler port that communicates with a fuel tank (not shown), and a nozzle of a fuel gun e (hereinafter referred to as a fuel nozzle e) is inserted into the frame member 10 with an inward rotation. And a valve-type inner lid 3 that is allowed to rotate and is rotated from the open state to the closing direction by an urging force when the oil supply nozzle e is pulled out. And in particular, the inner lid 3 is attached to the support body 35 so that the inner lid 3 can be separated from the support body 35, and the rotating body 16 that is rotatably arranged on the front end face side of the frame member 10 is rotated. A rotating mechanism 4 that allows the body 16 to rotate in conjunction with the opening and closing of the outer lid 2, and a locking means 5 that locks and unlocks the inner lid 3 in conjunction with an opening and closing operation of the outer lid 2. In conjunction with the opening / closing operation of the lid 2, the inner lid 3 is held in pressure contact with the sealing gasket 14, and the pressure holding means 6 that releases the holding, and the cover 7 that covers the rotation mechanism 4 and the like in an invisible manner. , 8. These will be described in detail below.

  First, as shown in FIG. 11, the recess b is provided integrally with a vehicle body panel a such as an automobile and is opened and closed by the outer lid 2. In the recess b, the connecting member 15 for mounting the frame member 10 shown in FIG. 2 is disposed in a state of penetrating the bottom surface, and the outer lid 2 (the locking claw 21) is engaged although not shown. The corresponding part of the locking means to be removed and the corresponding part of the pushing mechanism that pushes the outer lid 2 slightly in the opening direction when the locking of the locking means is released (for example, see Japanese Patent Application Laid-Open No. 2004-106584) Similarly, it is disposed with a part exposed on the inner surface or the like. Further, the recess b has a window, a slit, etc. (not shown) for letting the sub-frame 7b of the cover 7 shown in FIG. 2 and a part of the horizontal piece 8b of the cover 8 escape from the inside of the recess to the back side of the vehicle body panel a. Is provided.

  The outer lid 2 includes a hinge piece 20 joined to the inner surface and a locking claw 21 protruding from the inner surface on the rotating end side. The hinge piece 20 is formed with a shaft hole 22 that is bent at the base end side and passes through the pivot shaft 23 so as not to rotate. The outer lid 2 described above is disposed on the vehicle body side while being supported together with the rotation mechanism 4 with respect to the cover 7.

  On the other hand, the inner lid 3 includes a lid body 30 and a support body 35 as shown in FIGS. 2 and 3, and the lid body 30 is assembled so as to be separated from the support body 35 by a predetermined distance. The lid body 30 has a generally hat shape, and has a pair of protrusions 33 provided around the front end and protruding left and right with a diameter that allows the projected front end portion 31 to be inserted into the center hole 11 of the frame member 10 with a margin. And a flange portion 32 for sealing projecting around the base end. Further, as shown in FIG. 9, the cavity on the back surface side is provided at the center shaft portion 34a projecting at the center, the cylindrical portion 34b projecting so as to surround the base side of the center shaft portion 34a, and the inner periphery of the cavity portion. And a plurality of engaging step portions 34c. As shown in FIGS. 2 and 4, the support 35 includes a disc portion 36 and a reinforcing portion 37 integrated on the back side of the disc portion, and a central cylinder provided on the front surface of the disc portion 36. And a pair of mounting portions 37a projecting above the disc portion 36 and the reinforcing portion 37, and the like. Have. A shaft portion 37b projects on the coaxial line on the outer surface of each attachment portion 37a. The lid body 30 is inserted into the cylinder of the fitting shaft 36a with respect to the support body 35, and the distal end side of the fitting shaft 36a is fitted between the fitting shaft 36a and the cylinder portion 34b. In combination, each retaining piece 36b is assembled in a separable manner in a state of being fitted to each stepped portion 34c. In FIG. 2, the inner lid 3 and the gasket 39 disposed in the frame of the frame member 10 are shown in front of the frame member 10 so that the inner lid 3 and the gasket 39 can be easily seen.

  Here, the frame member 10 has a substantially rectangular plate shape, and has a circular center hole 11 defining a fuel filler port, and is provided on the front end surface so as to protrude around the hole 11 so that the rotating body 16 can be rotated. A plurality of holding piece portions 12 supported on the front end surface, receiving portions 13 projecting at right angles to the lower side of the front end surface, and mounting piece portions 14 (14a to 14c) projecting from the upper and lower end surfaces and the side surfaces. is doing. The receiving part 13 forms a receiving surface 13a for slidably holding the first rack 25 and a receiving surface 13b for slidably holding the second rack 27 at a position one step lower than the receiving surface 13a. As shown in FIG. 9, an inner lid holding portion 14d, a gasket contact portion 14e, and the like are provided on the rear side of the frame member 10, and a ring-shaped gasket 39 is incorporated so as to contact the contact portion 14e. Thereafter, the inner lid 3 (the shaft portion 37b of both attachment portions 37a) is pivotally supported with respect to the holding portion 14d so as to be rotatable or swingable. At that time, the inner lid 3 has one end locked to the inner lid 3 side while the biasing member 38 shown in FIG. 3 is supported between the attachment portions 37a on both sides, and the other end expresses a biasing force. In this manner, it is urged in the closing direction by locking to the holding portion 14d side.

  The above frame member 10 is connected to a fuel tank (not shown) or the fuel tank side fuel supply pipe via a connecting member 15. The connecting member 15 is a rectangular tube and has an attachment portion 15a for fixing the frame member 10 and the like. The frame member 10 is combined and integrated from the state in which the inner lid 3 and the gasket 39 are incorporated into the frame, with the attachment piece portion 14c in contact with the fixed portion 15b with respect to the connecting member 15. Thereafter, the rotating body 16 is rotatably disposed on the front end surface of the frame member 10 via the holding piece 12.

  As shown in FIG. 3, the rotator 16 has a general ring shape, a pair of guide grooves 18 provided on the inner periphery 17, a continuous gear portion 19 provided on the outer periphery (about half of the periphery), and a rear end side periphery. And a flange portion 16a that is rotatably supported by the holding piece portion 12. The guide groove 18 has a threaded groove shape, and has an inner periphery 17, and the groove inlet leads to the rear end surface, and is displaced from the rear end surface side to the front end surface side in the clockwise direction. The guide groove 18 is engaged with and disengaged from the inner lid side protrusion 33, and when the rotating body 16 is rotated clockwise from the state in which the guide groove 18 is fitted, the inner lid side lid body 30 causes the protrusion 33 to move. Through the front end face of the rotating body. Thereby, in this structure, the direction of separating the lid 30 from the support 35, that is, the gasket 39 is pressed by the flange portion 32, and the degree of sealing between the lid 30 and the contact portion 14 e of the frame member 10 is increased. Hold in pressure-contacting direction. Further, the pressure contact holding is released as the rotating body 16 rotates counterclockwise. From this state, when the inner lid 3 is pushed by the oil supply nozzle e, the protrusion 33 is released from the guide groove 18 and the oil supply nozzle e is inserted into the oil supply port (center hole 11) while opening the inner lid 3. It is.

  In other words, the locking means 5 described above is configured by the inner lid side protrusion 33 and the guide groove 18 on the rotating body side. On the other hand, the above-described pressure contact holding means 6 includes the lock means 5, the frame member 10 (the contact portion 14 e thereof), and the gasket 39. The rotating body 16 is rotated in conjunction with the opening and closing of the outer lid 2 by a rotating mechanism 4 interposed between the outer lid 2 and the outer lid pivot shaft 23.

  Here, the rotation mechanism 4 may be configured to be able to rotate the rotating body 16 in conjunction with the opening and closing of the outer lid 2. In this example, the gear portion 19 of the rotating body 16, the first rack 25 that meshes with the gear portion 19, the second rack 27 that is operatively connected to the first rack 25, and the rotational movement when the outer lid 2 is opened and closed are used. Thus, the second rack 27 is composed of gears 28 and 29 that can move left and right. Of these, the first rack 25 is a guide formed on the upper surface as shown in FIGS. 2 to 7 and having a tooth portion 25a continuously provided from a location slightly away from the left end to the right end and a rear side in a substantially L shape. It has the part 25b and the escape groove 26 of the cross-section reverse concave shape provided in the lower surface longitudinal direction on the left side. On the other hand, the second rack 27 has a tooth portion 27a that is provided continuously from the left end to a position slightly ahead of the right end on the rear surface, and a convex portion that is provided on the upper surface and slightly above the right end. 27b. The second rack portion 27 is slidably supported by the lower receiving surface 13 b of the frame member side receiving portion 13. Thereafter, the first rack 25 is slid onto the upper receiving surface 13a and the upper surface of the second rack 27 disposed on the receiving surface 13b with the second rack side convex portion 27b fitted in the relief groove 26. It is supported freely.

  In the above structure, when the second rack 27 is slid to the right side, the first rack after the convex portion 27b abuts the groove right inner end surface of the escape groove 26 with a time lag (a little time). 25 can be moved in the same direction. On the contrary, when the second rack 27 is slid to the left side, the first rack 25 is moved after the convex portion 27b comes into contact with the groove inner left end surface of the escape groove 26 with a time lag (a little time). Allow movement in the same direction.

  Further, the gear 28 integrally forms a lower gear portion 28a and an upper gear portion 28b, and is arranged in the center from the sub-frame side shaft hole 7i in a state of being disposed in a sub-frame 7b of the cover 7 described later. It is pivotally supported via a shaft 24 mounted in the shaft hole 28c. On the other hand, the gear 29 forms a tooth portion 29a on the fan-shaped outer periphery, and is arranged in the sub-frame 7b together with the base end side of the outer lid-side hinge piece 20 in the sub-frame side shaft hole 7h. To the shaft hole 29b and the shaft 23 attached to the hinge one-side shaft hole 20a. In this structure, when the gear portion 28a is rotated by the gear 29, the gear portion 28b allows the second rack 27 to move left and right through meshing with the tooth portion 27a.

  On the other hand, the covers 7 and 8 cover the periphery of the rotating mechanism 4 and the rotating body 16 and the pivotal support portion of the outer lid 2. 2 and 5, the cover 7 is provided on the one side of the main frame 7 a and the main frame 7 a and disposed outside the concave portion b, that is, from the concave portion, as shown in FIGS. 2 and 5. It consists of a sub-frame 7b arranged on the back side of the vehicle body panel a. In addition to the mounting portions 7c and 7d on the vehicle body side, the main frame 7a is provided with windows 7e and 7e that are opened on both side surfaces to release the horizontal pieces 8b of the cover 8, etc., and the hinge piece 20 is rotatable to the sub-frame 7b. A window (not shown) for exposing the corresponding portion of the window 7f to be inserted, the locking means for the outer lid and the push-up mechanism described above into the main frame is provided. The sub-frame 7b is a small window 7g (see FIG. 6) in which the upper and lower surfaces and the front surface are closed, the rear surface is closed by a plate 9, the inner surface is opened by windows 7e and 7f, and the outer surface is provided on the lower side. It is open. In addition, shaft holes 7h and 7i through which the two shafts 23 and 24 arranged in parallel to each other are provided on the upper and lower surfaces of the sub-frame 7b.

  The cover 8 has a substantially inverted T shape composed of a vertical piece 8a and a horizontal piece 8b. The vertical piece 8 a is a part that mainly covers the periphery of the rotating body 16, and has a circular hole 8 c provided corresponding to the center hole of the rotating body 16. The horizontal piece 8 b is a part that mainly covers the first rack 25 and the second rack 27. Then, the cover 8 is connected to the main frame with an engagement means or a stopper (not shown) in a state where both sides of the horizontal piece 8b are inserted into or out of the subframe 7b through the windows 7e with respect to the cover 7. 7a is attached and integrated. The shapes of the covers 7 and 8 and the mounting structure to the recess b are arbitrarily designed according to the vehicle body side recess b, the outer lid 2, the rotating mechanism 4, the rotating body 16, and the like.

(Lubrication Work and Advantages) Next, the refueling work when the above-described opening and closing device 1 for a filling port is employed in an automobile as shown in FIG.
(1) In the refueling operation, since the outer lid 2 is locked in the closed state as shown in FIG. 6, first, the outer lid 2 is unlocked by remote control or the like. Then, the outer lid 2 is slightly rotated in the opening direction with the shaft 23 as a fulcrum by the push-up mechanism, so that the outer lid 2 is opened using a gap formed between the outer lid 2 and the recess b. These are the same as before. However, even if the outer lid 2 is rotated in the opening direction by the push-up mechanism, the rotating body 16 is not yet rotated. This is because the rotation of the outer lid 2, which will be described later, the rotation of the gear 29, the rotation of the gear 28, the sliding of the second rack 27 in the right direction, and the sliding of the second rack 27 to the convex portion 27b by this sliding. This is because, in one rack-side escape groove 26, it slides independently from the groove left inner end side to the groove right inner end surface. Thus, in this structure, the push-up mechanism is prevented from being subjected to an inadvertent load due to the presence of the rotating mechanism 4 that enables the rotating body 16 to rotate in conjunction with the opening / closing operation of the outer lid 2.

(2) Next, the outer lid 2 is rotated in the opening direction with the shaft 23 as a fulcrum. 6 and 7, the gear 29 is rotated through the shaft 23 in the clockwise direction, which is the same direction as the outer lid 2, and the gear 28 is engaged with the gear 29 and the lower gear portion 28a. The second rack 27 is rotated counterclockwise, and the second rack 27 is slid rightward through the meshing of the upper gear portion 28b and the tooth portion 27a. The first rack 25 is located in the right side of the groove between the convex portion 27b and the relief groove 26. It is slid in the same direction as the second rack while maintaining engagement with the end surface. Then, the rotating body 16 is rotated in the counterclockwise direction through the meshing of the tooth portion 25a and the gear portion 19, and the rotation changes the engagement groove position of the guide groove 18 with respect to the inner lid side protrusion 33. To do. In this example, when the rotating body 16 is rotated about 180 degrees, the protrusion 33 is unlocked from the rear end side groove portion of the guide groove 18. When the inner lid 3 is unlocked and pushed from the outside to the inside by the oil supply nozzle e as shown in the enlarged view of FIG. 11, the urging member 38 is urged by swinging around the shaft portion 37b. Accordingly, the oil supply nozzle e is allowed to be inserted. The refueler performs refueling in that state.

(3) After refueling is completed, when the refueling nozzle e is pulled out, the inner lid 3 is rotated in the closing direction from the one-dot chain line in FIG. 9 by the urging force of the urging member 28 and switched to the solid line position in FIG. The inner lid 3 is located at the position indicated by the solid line in FIG. 9, as shown in FIG. 3B, at the inlet of the guide groove 18, that is, the groove portion on the most rear end face side of the rotating body 16 of the guide groove 18. (It continues to the rear end). In this structure, when the outer lid 2 is rotated from the open state to the closed direction from this state, the counterclockwise direction in which the gear 29 is the same direction as the outer lid 2 via the shaft 23 in FIGS. The gear 28 is rotated clockwise through the engagement of the gear 29 and the lower gear portion 28a, and the second rack 27 is moved leftward through the engagement of the upper gear portion 28b and the tooth portion 27a. After the sliding and the convex portion 27b engages with the groove left inner end surface of the escape groove 26, the first rack 25 maintains the engagement between the convex portion 27b and the groove left inner end surface of the escape groove 26 and the second rack. Slide in the same direction. Then, the rotating body 16 is rotated in the clockwise direction through the meshing between the tooth portion 25a and the gear portion 19, and the inner lid side protrusion 33 and the guide groove 18 increase the fitting force by this rotation. Locked. Therefore, in this structure, even if the inner lid 3 is configured to be locked by the locking means 5, the locking means 5 is locked or released in conjunction with the opening / closing operation of the outer lid 2, so that it is easy to use. ing.

(4) In the closed state of the outer lid 2, the projection 33 of the inner lid 3 is locked to the guide groove 18 (the groove portion on the front end side of the periphery of the rotating body), and the lid 30 is the support 35 as shown in FIGS. 8 and 10. The flange portion 32 presses the gasket 39 to the maximum and is held in pressure contact with the frame member 10 (the contact portion 14e) with certainty. This locking and pressure holding is maintained unless the outer lid 2 is switched from the closed state to the open state. For this reason, in this structure, even if an excessive impact is applied to the vehicle body due to, for example, a rear-end collision or the outer lid 2 is deformed by the rear-end collision, the oil filler port is securely sealed by the inner lid 3, so that the liquid leaks. Excellent quality and safety.

  The present invention only needs to include technical elements specified in each claim, and the details can be variously changed as necessary. As an example, in the embodiment, the protrusion 33 is provided on the inner lid 3 and the guide groove 18 is provided on the inner periphery of the rotating body 16. Instead, the protrusion 33 is provided on the rotating body 16 side, You may make it provide the guide groove 18 corresponding to this protrusion 33 in the lid | cover 3 side. In the embodiment, the rotation mechanism 4 is composed of the gear portion 19 of the rotating body 16, the first rack 25, the second rack 27, and the gears 28 and 29. 2 and the rotating body 16 may be operatively connected via a wire.

It is a schematic perspective view which shows the principal part of the opening / closing apparatus for fuel filler openings of this invention form. It is a schematic exploded view which shows the main structural members of the said switchgear. (A) is a block diagram which shows the relationship between the rotary body of the said switchgear, and an inner cover, (b) is a half sectional view which divided the rotary body into two. It is the schematic block diagram which cut | disconnected the principal part of the said switchgear in the substantially intermediate part. It is a schematic front view which shows the principal part of the said switchgear partly broken in the open state of the outer lid. It is a model front view which shows the principal part of the said opening / closing apparatus in the closed state of an outer cover. FIG. 6 is a schematic cross-sectional view taken along the line AA in FIG. 5 and omitting a cover and the like. It is a schematic cross section which cut along the CC line of FIG. 6, and abbreviate | omitted the cover. FIG. 6 is a schematic enlarged cross-sectional view taken along the line BB in FIG. 5. FIG. 7 is a schematic enlarged cross-sectional view taken along a line DD in FIG. 6. It is explanatory drawing which shows the motor vehicle which applied the opening-and-closing apparatus for oil fillers of this invention. It is explanatory drawing which shows the switchgear of patent document 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Opening-and-closing device for oil filler 2 ... Outer cover (20 is a hinge piece, 21 is a latching claw, 20a is a shaft hole)
3 ... Inner lid (30 is a lid, 33 is a protrusion, 35 is a support)
4 ... Rotation mechanism (25 is first rack, 27 is second rack, 28 and 29 are gears)
DESCRIPTION OF SYMBOLS 5 ... Locking means 6 ... Pressure | pressure contact holding means 7, 8 ... Cover 10 ... Frame member (Fueling port partition member, 11 is a hole, 12 is a holding piece part, 13 is a receiving part)
15 ... Connecting member (connecting member to the oil supply pipe)
16 ... Rotating body (16a is a flange portion, 17 is an inner periphery, 18 is a guide groove, 19 is a gear portion)
23, 24 ... Shaft 38 ... Biasing member 39 ... Gasket a ... Body panel b ... Recessed portion e ... Fueling gun (fueling nozzle)

Claims (6)

A rotary outer lid that opens and closes a recess on the vehicle body side, a fuel supply port provided in the recess and communicating with a fuel tank, and insertion of a fuel supply nozzle with respect to the fuel supply port is permitted with rotation inward. In addition, in the opening and closing device for the fuel filler provided with an inner lid that is rotated in the closing direction from the open state by the biasing force when the fuel nozzle is pulled out,
A lock that locks the inner lid so as not to rotate in conjunction with the closing operation of the outer lid, and releases the locking in conjunction with the opening operation of the outer lid to allow the inner lid to rotate. An opening / closing device for a fuel filler, characterized by comprising means. A rotary outer lid that opens and closes a recess on the vehicle body side, a fuel supply port provided in the recess and communicating with a fuel tank, and insertion of a fuel supply nozzle with respect to the fuel supply port is permitted with rotation inward. In addition, in the opening and closing device for the fuel filler provided with an inner lid that is rotated in the closing direction from the open state by the biasing force when the fuel nozzle is pulled out,
A frame member that defines the oil filler port, a sealing gasket interposed between the inner lid and the frame member, and the inner lid pressed against the gasket in conjunction with the closing operation of the outer lid. An opening and closing device for a fuel filler opening, characterized by having press contact holding means for holding the inner lid in conjunction with opening operation of the outer lid.   The lock means according to claim 1 or the press-contact holding means according to claim 2 has a substantially ring shape, and is rotatably disposed outside the fuel filler opening to expose the inner lid from the ring-shaped hole. An opening / closing device for a fuel filler, comprising: a body, wherein the rotating body and the inner lid can be engaged / disengaged in conjunction with opening / closing of the outer lid.   A projection provided on one of the inner lid and the rotating body, and a guide groove provided on the other side for guiding the inner lid from the rear end side to the front end side of the rotating body. 4. The opening / closing device for a fuel filler opening according to claim 3, wherein the guide groove can be engaged / disengaged with respect to the protrusion by being rotated in conjunction with opening / closing of the outer lid.   The inner lid includes a support body that is swingably held and urged in a closing direction, and a cover body that is detachably attached to the support body. Item 5. The opening / closing device for a fuel filler opening according to any one of Items 1 to 4.   The oil supply according to any one of claims 3 to 5, further comprising a rotation mechanism that is interposed between the rotating body and the outer lid and rotates the rotating body in conjunction with opening and closing of the outer lid. Opening and closing device for the mouth.

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